• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a system for intercepting and collecting bodies in a flow of a fluid, comprising: - a pipe portion (18) comprising an inner face delimiting an axial passage for the flow, - a filtering surface ( 25) having an upstream face (25a) and extending transversely in the passageway so as to intercept, by its upstream face, bodies carried by the flow while leaving unobstructed several collection openings (26a, 26b) between the surface filter and the inner face, - a cleaning device (30) arranged opposite the upstream face (25a), the device (30) and the filtering surface (25) being in a relative movement with respect to the other such that each zone of the upstream face is mechanically scanned by the device during each reciprocal relative movement of go and return so as to direct the bodies intercepted by the upstream face (25a) to the collecting openings of said horn ps.
    公开号:FR3038041A1
    申请号:FR1555939
    申请日:2015-06-26
    公开日:2016-12-30
    发明作者:Philip Eugene Douglas Jackson
    申请人:E Beaudrey et Cie SA；
    IPC主号:
    专利说明:

    [0001] This invention relates generally to the interception and collection of bodies carried by a flow of a fluid. BACKGROUND OF THE INVENTION The present invention relates more particularly to the cleaning of heat exchangers and, for example, tubular heat exchangers forming a condenser. The cleaning of the exchangers is generally carried out continuously by solid cleaning elements or cleaning bodies, in practice ball-shaped and made for example of foam rubber, conveyed by one of the streams concerned, according to arrangements known in principle since Such cleaning bodies are generally intercepted by an interception system which must be arranged on the outlet pipe of the heat exchanger in order to recover these cleaning bodies and the reinject into the inlet pipe of the exchanger. This intercept system generally comprises, in a cuff, filtration means specific to the desired retention. To date, and according to various practical embodiments, these filtering means are usually formed of two flat grids, which, in the operating position, close the sleeve transversely, forming a dihedral with one another. The edge perpendicular to its axis is oriented downstream. In practice, these two grids are each individually pivotally mounted in their central region of axes parallel to this edge, to occupy one or other of two other positions, namely: - a cleaning position, which is opposite their operating position, and for which they can be subjected to a washing countercurrent, and - another position, which is intermediate between their operating position and their cleaning position, and for which, they are arranged in the current and, in practice, out of service. To ensure proper rolling of the cleaning bodies on the grids towards means for collecting said bodies provided along the edge 3038041 2 of these grids, said grids necessarily make a relatively small angle of inclination with respect to the axis the cuff in the service position. As a result, to accommodate the grids, this sleeve necessarily has a relatively large length.
    [0002] In addition, when the grids are tilted for the cleaning operation a number of cleaning bodies blocked under the grids are returned to the natural environment often violating the regulations applicable to discharges. The installation of an interception system thus equipped with such grids can be difficult, especially in some pre-existing installations in which only a short length of pipe is available between the outlet of the heat exchanger and the masonry work on which it rests. To overcome these drawbacks, it has been proposed, in place of the pivoting grid sleeve, to use a filter with circular filter elements perpendicular to the axis of the sleeve and a suction pump of the cleaning bodies stopped by the filtered. The suction pump recovers the stopped bodies by sucking them through a pump which then returns them upstream of the inlet of the exchanger. This system is the subject of French Patent No. 94 02109. Effective and not letting any cleaning body, this device however requires a fairly large pump flow (at least four percent of the main flow), cumbersome, expensive and consumer energy. In addition, the high flow requires large diameter pipes which are also expensive and bulky.
    [0003] The invention provides for remedying at least one of the aforementioned drawbacks by proposing, in a first aspect, a system for intercepting and collecting bodies conveyed by a flow of a fluid, characterized in that it comprises: pipe portion comprising an inner face which defines an axial internal passage for the flow of the fluid, - at least one filter element comprising a filtering surface having a first upstream face and a second opposite downstream face, the transversely extending filtering surface in the internal passageway 3038041 3 way to intercept, by its first upstream face, bodies carried by the flow while leaving cleared several collection openings between the filtering surface and the inner face of the pipe portion, - a device cleaning which is arranged opposite the first upstream face of the filtering surface and which is capable of mechanically scanning said first face upstream, the cleaning device and said at least one filter element being in an alternating relative movement back and forth relative to each other so that each zone of the first upstream face of the filtering surface is mechanically swept by the cleaning device during each reciprocal relative movement back and forth in order to direct the bodies intercepted by the first upstream face of the filtering surface towards the collection openings of said bodies. This mechanical sweeping of the filtering surface, by a relative displacement of this surface and of the cleaning device, makes it possible to dislodge the bodies stopped by the latter by a mechanical action of contact between the bodies and the cleaning device (or by contact with at least one mechanical sweeping device of the device which is intended to rub or scrape against the filtering surface) and to move them by pushing them, always by mechanical contact, towards the collecting openings (eg lateral). The sweeping is carried out in a first direction of displacement (displacement of the filtering surface or the cleaning device) in order to sweep the surface for the first time by mechanical friction between the cleaning device and the upstream face of the surface (one-way direction). ), then in a second direction of movement to scan the same surface (return direction). The scanning movement is thus a reciprocating back and forth movement (this movement can be performed once or repeated several times consecutively) of one of the two elements (surface or cleaning device) relative to the other maintaining a mechanical contact by friction between the two elements. This interception and collection system is thus particularly simple and effective and makes it possible not to resort to a system such as that of the prior art described above in which the cleaning bodies intercepted by the filtering surface are collected only under the action of a suction necessarily very powerful (no suction flow is necessary). The system 3038041 4 according to the invention therefore does not require, as in the prior art discussed above, a suction pump of high flow (at least four percent of the main flow), cumbersome, expensive and consumer of energy. As a result, it is no longer necessary to provide large diameter pipes 5 which are also expensive and bulky. Moreover, the mechanical sweeping of the filtering surface which is carried out by the system also ensures a cleaning of said surface. According to other possible characteristics taken separately or in combination with each other: the filtering surface has a general shape which extends both transversely and axially in the internal passageway so that the intercepted bodies on an area of the first upstream face of the filtering surface and swept by the cleaning device along said first upstream face of the filtering surface towards one or more collection openings (by moving towards one or the other end or opposite peripheral edges thereof towards collection openings); the collecting openings are disposed adjacent two opposite peripheral edges of the filtering surface; these two opposite edges are arranged along a transverse axis of the filtering surface and the latter has, along another perpendicular transverse axis, two other opposite peripheral edges which are arranged at a distance from the internal face of the driving portion which does not allow not to let the cleaning bodies conveyed by the flow; the system comprises, at each of the two opposite peripheral edges of the filtering surface, at least one body collection hopper disposed downstream of at least one collection opening and which communicates with said at least one collection opening; thus, one or more hoppers may be disposed on each side of the filtering surface, between it and the inner face of the pipe portion; Each body-collecting hopper forms a turbulence chamber comprising as input at least one obstacle which is capable of generating fluid vortices in the chamber when a flow of fluid meets said at least one obstacle; the generation of vortices in the one or more chambers 3038041 5 chambers has the effect of keeping in motion the bodies inside that (s) -ci, thus preventing any stagnation or stuffing of said bodies; the filtering surface has a general shape chosen from among the following geometric shapes: a semi-cylindrical surface whose concave face corresponds to the first upstream face, a semi-cylindrical surface whose convex face corresponds to the first upstream face, a flat surface formed of a panel substantially perpendicular to the axis of the pipe portion; these exemplary shapes are particularly suitable for effectively interception and collection of bodies as well as their mechanical sweeping by the cleaning device during reciprocating relative reciprocating movement; the pipe portion also comprises the mechanical cleaning device; the system thus housing the filter element and the cleaning device in the pipe portion is particularly compact and therefore of relatively low axial size; when the filtering surface is a semi-cylindrical surface whose internal face corresponds to the first upstream face, the cleaning device is housed in the half-cylinder defined by the filtering grid (radial arrangement relative to the half-cylinder); which gives the system a particularly small axial space; The pipe portion has a cross section of polygonal and non-circular shape; this shape which can take for example a generally rectangular shape is particularly suitable for housing a filter element whose filtering surface is semi-cylindrical; when the filtering surface is a semi-cylindrical surface whose internal face corresponds to the first upstream face, at least one opening for collecting the bodies is disposed on either side of said filtering surface, between the inner face of the the pipe portion and a peripheral edge of the filtering surface, wherein at least one body collection hopper is disposed downstream of the at least one collection opening; The cleaning device is mobile while the at least one filter element is fixed; alternatively, said at least one filter element is movable while the cleaning device is fixed; One of the cleaning device and said at least one filter element is able to effect a pivoting movement about a fixed axis or to perform a rectilinear translational movement, each movement being a forward movement and alternative return; The cleaning device comprises one or more mechanical scanning members which are in contact with the first upstream face of the filtering surface; this or these members are held in contact with the filtering surface in the rest position, that is to say when no movement of the device or the surface is involved; The filtering surface extends in two transverse directions perpendicular to one another, the one or more mechanical scanning members extending transversely along one of the two transverse directions and over the entire corresponding dimension of the first upstream face; the one or more mechanical scanning members extend parallel to the two opposite peripheral edges of the filtering surface; the filtering surface is formed by a filtering grid with bars delimiting between them openings through which the fluid flows and in which bodies are able to be housed, the mechanical scanning member or bodies being suitable, in contact with the first upstream face of the filtering surface, to penetrate at least partially into the openings of the grid in order to dislodge any bodies which have housed therein; or the mechanical scanning members may take the form of a brush, a comb or any other member capable of pushing the elements stopped on the surface towards the collection openings; The bodies conveyed by the flow are cleaning bodies for heat exchanger in one application. According to another application, the system is intended to ensure the filtration of bodies such as debris and other unwanted elements carried by the flow. This system can thus for example be disposed upstream of any installation, a heat exchanger .... According to a second aspect, the invention also provides an installation comprising: at least one tubular heat exchanger, A conduit for supplying a fluid connected to an inlet of said at least one heat exchanger, a conduit for discharging the fluid connected to an outlet of said at least one heat exchanger, a plurality of bodies. cleaners carried within the at least one heat exchanger for cleaning purposes; - an interception and collection system for the cleaning bodies arranged on the fluid discharge pipe, characterized in that the interception system and the Collection of cleaning bodies is in accordance with the system as briefly described above. The purpose of the system is therefore to intercept, in a simple and effective manner, and with a lower energy expenditure than that of the aforementioned prior art, the cleaning bodies which served to clean the at least one exchanger and to collect them in order to put them back into circulation in the installation, upstream of said at least one exchanger, or replace them. According to a third aspect, the invention also provides a method of collecting bodies carried by a flow of a fluid, characterized in that the method is implemented in a system for intercepting the bodies conveyed by the flow of fluid which comprises: - a pipe portion comprising an internal face which delimits an axial internal passage for the flow of the fluid, - at least one filter element comprising a filtering surface comprising a first upstream face and a second opposite face downstream, the filtering surface extending transversely in the internal passageway so as to intercept, by its first upstream face, bodies carried by the flow while leaving unobstructed several collection openings between the filtering surface and the inner face of the driving portion; the method comprising the step of: - moving said at least one filter element or cleaning device into a m alternate opening and returning to perform a mechanical scan of each zone of the first upstream face of the filtering surface by contact with the cleaning device vis-à-vis, mechanical scanning of the surface to direct the bodies 3038041 8 intercepted by the first upstream face of the filtering surface towards the collection openings of said bodies. According to one possible characteristic: the cleaning device is set in motion while the said at least one filter element is fixed or vice versa. The characteristics of the first and second aspects of the invention set out above also apply to the third aspect of the invention briefly described above. Other features and advantages will become apparent from the following description, given solely by way of nonlimiting example and with reference to the appended drawings, in which: FIG. 1 is a general schematic view of an installation comprising an exchanger and a system for intercepting and collecting cleaning bodies according to one embodiment of the invention; FIG. 2 is an enlarged and detailed view of the system for intercepting and collecting the cleaning bodies of the installation of FIG. 1 in section along an axial plane; FIG. 3 is an axial sectional view of the system of FIG. 2 taken along a plane perpendicular to the plane of FIG. 2 and containing the axis of the pipe portion; FIG. 4 is a diagrammatic view enlarged in section along the section plane illustrated in FIG. 2 of the collection channel for the intercepted cleaning bodies; FIG. 5 is a sectional view along an axial plane of a first variant embodiment of a system for intercepting and collecting cleaning bodies in which the filtering element is plane; - Figure 6 is a sectional view of the system of Figure 5 in a plane perpendicular to the plane of this figure and the axis of the pipe portion; FIG. 7 is a schematic view of the interception system of FIGS. 1 to 4 used as a filter; FIG. 8a is a schematic partial perspective view of a second variant embodiment of a system for intercepting and collecting cleaning bodies; FIG 8b is a schematic partial perspective view of a third embodiment of a system for intercepting and collecting cleaning bodies. FIG. 1 shows schematically, under the general reference denoted 1, an installation according to one embodiment of the invention which comprises several elements including a heat exchanger forming a condenser 10. As shown schematically by the arrows F1 and F2, this the exchanger is traversed by a flow of cooling fluid, in this case water, in favor, on the one hand, of an inlet duct or supply duct 11 (inlet flow F1) and on the other hand, an outlet pipe or fluid outlet pipe 12 (outlet flow F2).
    [0004] This is, in practice, a tubular heat exchanger which, for example, is of the type briefly described in FR 2,716,530 mentioned above. Since such a heat exchanger 10 is well known by itself, and does not fall within the scope of the present invention, it will not be described further here. In the embodiment shown, filtration means 13 are interposed on the inlet pipe 11, with the aid of a sleeve 14. These filtering means 13, which are not imperative, are not covered either by the present invention and therefore will not be described here either. These are, for example, filtration means of the type described in document FR 2 609 644. In a manner known per se, cleaning bodies which are solid cleaning elements 15 may be put into permanent circulation. in the installation 1 and, in particular, in the heat exchanger 10, for the continuous cleaning thereof.
    [0005] In practice, these are foam rubber balls, the diameter of which is slightly greater than the internal diameter of the tubes of the heat exchanger 10, and whose density, in the impregnated state, is similar to that of the water. It is advisable to ensure a management of these cleaning bodies 15 in the installation 1, that is to say, not only to ensure an effective circulation in the heat exchanger 10, but also, to control the number and possibly the dimensions (thus possibly eliminating bodies that are too worn). In a manner known per se, these cleaning bodies 15 are systematically injected into the inlet pipe 11, downstream of the filtration means 13, to be driven by the incoming flow F1. The installation 1 also comprises, mounted on the outlet pipe 12, a system 17 for intercepting and collecting the cleaning bodies 15 in circulation according to one embodiment of the invention. This system will be described in more detail below. The installation 1 further comprises, delimited by dashed lines in FIG. 1, a system 48 for managing the intercepted and collected cleaning bodies which recycles, to the inlet pipe 11, the cleaning bodies 15 retained by the interception system. 17.
    [0006] In a manner known per se, the management system 48 comprises a recycling line 49 (driving portions 49a and 49b in this example) connected on one side to the interception system 17 and on the other side to the suction of a pump 41 (suction device), the pump being connected to a return line 42a via, successively, a pipe 42b, a meter 43 and a collector 44 The return pipe 42a feeds the inlet pipe 11, downstream of the filtration means 13, with cleaning bodies 15 to be circulated back into the installation. These cleaning bodies 15 are reinjected via injection rods or nozzles 45 which are preferably oriented against the current.
    [0007] A valve V1 makes it possible to cut off the flow in the pipe 42a downstream of the collector 44 and thus to isolate said collector 44 and the counter 43 in collaboration with a valve V2 which makes it possible to isolate the pump 41 from the interception system 17. .
    [0008] 3038041 11 The system for intercepting and collecting the cleaning bodies 17 is installed downstream of the tubular exchanger 10 on the generally circular duct 12 and comprises a pipe portion or sleeve 18 which comprises an inlet flange 21 and a flange output 22 (Figures 2 and 3).
    [0009] The sleeve 18 has an internal face which delimits an axial internal passage for the flow of fluid from the exchanger 10. The inside of the flanges 21 and 22 is cut so as to ensure the junction with a central body 19 which, here, is of polygonal cross section. In other embodiments, the cross-section of the body adopts other shapes. This body 19 is substantially rectangular in cross section and may have corners cut at the four corners. The body 19 has four flat faces 19a and 19b, 19c and 19d opposite two by two. The system 17 comprises, centrally installed in the sleeve 18, in particular inside the body 19, a filtering element 25 which comprises a filtering surface extending here both transversely and axially in the axial passage internal to the body. 19. As shown in FIG. 2, the filtering surface comprises a first upstream face 25a directed towards the exchanger 10 and a second opposite downstream face 25b. In the embodiment illustrated in Figures 1 to 3 the filtering surface has a generally semi-cylindrical shape with the concavity of the semicylinder (inner face) facing upstream of the sleeve 18 (and therefore of the pipe 12). The axis of the semi-cylinder is arranged perpendicular to the two opposite faces 19a and 19b of the body (Fig. 3). The filtering surface is in the form of a bar grating placed in the flow of fluid from the pipe 12 and which occupies almost all of the internal passage section of the sleeve 18, so as to intercept the bodies cleaners 15 conveyed by the flow on the upstream face 25a of the grid. On each of the two opposite sides or peripheral edges of the semicylinder, between each edge / upstream free end 25c, 25d of the semi-cylinder and the inner face facing the sleeve 18, are arranged one or more 3038041 12 several body collection openings 15 In FIG. 4 two collecting openings 26a, 26b are shown arranged next to one another, between the two opposite faces 19a, 19b of the body 19, near the edge 25c of the semi-cylinder. Two other apertures (not shown) are symmetrically disposed near the opposite edge 25d of the semi-roll 25. Thus, the filtering surface 25 occupies almost the entire flow section provided for the flow and the bodies transported to the except for the lateral collection openings 26a, 26b on the side of the edge 25c of the semi-cylinder 25 and those not shown on the side of the opposite edge 25d. The filtering surface extends in particular in two transverse directions perpendicular to each other as well as in an axial direction perpendicular to the first two directions. The two opposite peripheral edges of the filtering surface that are adjacent to the collection openings are spaced from each other along a first of two transverse directions of extension of the filtering surface. The system 17 also has behind each collection opening, downstream thereof, a collection hopper 15 (Figures 2 and 4). In Figure 4 two hoppers 27a, 27b are shown next to each other between the two opposite faces 19a and 19b and in Figure 2 only the hopper 27a is visible. Two identical hoppers are arranged symmetrically on the opposite side of the filtering surface and, in FIG. 2, only the hopper 27c is visible. Each collection hopper forms a turbulence chamber having as an inlet, where the collection opening is located, an obstacle 39 (formed for example in the form of a trigger guard) which is capable of generating, when a flow of fluid F2 (from the pipe 12) meets said obstacle, vortices of fluid, downstream of the obstacle, that is to say in the chamber as shown in Figure 4. Such turbulence hoppers are for example of the type described in French Patent No. 8210055. Each hopper has one of its two opposite lateral flanks which is perforated and formed by a perforated plate 28a, 28c (FIG 2) extending axially from the respective peripheral edge 25c, 25d of the respective bottom filtering surface 3038041 13 29a, 29c of the hopper. Thus, in Figure 2 the hopper 27a is delimited on one side by the perforated side 28a and the opposite side by the opaque side 19d, while the hopper 27c is delimited on one side by the opposite perforated side 28c and the side opposite by the opaque face 19c.
    [0010] An outlet pipe 38 is provided for each body collection hopper (Figs 2 and 4) in the corresponding opaque surface 19d, 19c and is connected respectively to the two branches 49b, 49a of the recycle line 49 (Fig.1). ). The system 17 comprises a cleaning device 30 which is contained inside the sleeve, in particular of the body 19, and is arranged opposite the first upstream face 25a of the filtering surface, that is to say to inside the semicylinder. This device 30 comprises one or more mechanical scanning members 31. The device is mounted inside the sleeve in such a way that the mechanical scanning member (s) 31 come into contact with the first upstream face (25a), as well as with the rest than during the sweeping movement that will be described later to rub / scrape the filter surface during the movement. In the example described and illustrated, the device 30 comprises a single mechanical scanning member 31, but the following description also applies to a plurality of members. The member 31 is for example a brush, a flexible flap, a comb ... or any other member which is capable of exerting a mechanical friction on the first upstream face of the filtering surface when a relative displacement 25 between the organ and surface is imposed by the design of the system. Two possibilities are offered to allow the friction of the member 31 on the filtering surface: either the body moves or the surface moves. In the following example, only the cleaning device is mobile, the filtering surface being fixed. However, the following description also applies to the other possibility: fixed cleaning device and moving filtering surface. The mechanical scanning member 31 is carried by one or more arms, two arms 32a, 32b in the embodiment illustrated in FIG. 3. The arms 32a, 32b parallel to each other are themselves subject to an axis 33 which is coaxial with the axis of the semi-cylinder 25 (grid) and parallel to the direction of extension of the member 31. This direction of extension of the member 31 is parallel to the peripheral edges 25c, 25d and the organ 31 extends transversely (FIG 3) over the entire corresponding transverse dimension of the surface, with the exception, however, of a reduced space between each end of the member and the facing face 19a, 19b for reasons of assembly and freedom of movement of the member 31 during its movement. The axis 33 is mounted at its two opposite ends on the two opposite faces 19a, 19b of the body 19 (FIG 3) and pivots around itself, carried by a bearing 34 fixed to the face 19b of the body. At the opposite face 19a of the body the axis 33 is connected to a drive system 36 known per se which drives it in rotation on command. This system 36 is for example a motor. The drive system 36 rotates the shaft 33 and thus imparts to the mechanical scanning member 31 an alternating rotational movement of forward and reverse or oscillating movement (each forward and return movement is effected on a same angular sector of amplitude equal to the arc of circle illustrated by the filtering surface 25 in FIG. 2) allowing it to scan the entire first upstream face 25a of the filtering surface 25 from the edge 25d to the edge 25c, then from the edge 25c at the edge 25d by exerting a mechanical friction on each zone thereof at each passage. When the scanning member is a brush, a brush .., the bristles thereof or thereof penetrate partially inside the openings between the bars of the grid (the rest position of the device 30 is adjusted to allow this arrangement), thereby dislodging bodies that may have lodged in grid openings. The rotational movement allows the mechanical scanning member 31 to disengage / detach by friction the cleaning bodies and other elements that are stopped on the upstream face 25a of the grid 25.
    [0011] The rotational movement then allows the member 31, during the same movement to go or return, to push the cleaning bodies and other unhooked / unstuck elements towards one of the two peripheral edges 25c, 25d (here the edge 25c in Figure 2), along the upstream face 25a as shown in Figure 2 (the arrow indicates the direction of rotation of the device 30). As the rotational movement continues, the bodies 15 and other unhooked / peeled elements reach the collecting openings 26a, 26b adjacent to the edge 25c and located respectively upstream of the hoppers 27a and 27b (FIG 4) and pass through them to be collected. in said hoppers. The cleaning device 30 then returns in the other direction of rotation, from the edge 25c in order to traverse the same semicircular portion to the opposite edge 25d, and so on, providing an alternating scanning movement of the filter element fixed by rubbing each zone thereof. The oscillating movement is quite slow, for example of the order of a few oscillations per minute, but this is sufficient to unhook / unstick the cleaning bodies and other elements arrested on the upstream face 25a of the grid 15 25. Note that the action sweeping the upstream face 25a of the filtering surface 25 also has the effect of cleaning the latter at the same time as it moves the bodies 15 for their collection. The cleaning bodies 15 and other elements picked up in the collection hoppers 27a-c are then sucked by the pump 41 via the outlet pipes 38 and the branch 49b (FIG 1). The body water 15 is directed to a cleaning unit 60 already known per se. This unit 60 allows the collection of bodies and sometimes their counting. At the outlet of this unit, the water charged with body 15 is conveyed to the body injection rods 45 disposed upstream of the tubular exchanger 10 to be cleaned. When the body circulation 15 is not used in the installation 1, it is possible to specifically clean the filtering surface (grid) which becomes fouled over time with various debris brought by the cooling water of the water. For this purpose, it suffices to keep the pump 41 running, to keep in operation the oscillation movement of the member 31. The filtering surface 25 is then cleaned by sweeping and the debris is gradually stored in the airlock. with balls 44 maintained in collecting position balls and debris.
    [0012] 3038041 16 The interception system and reciprocating mechanical collection system can operate permanently or be operational according to defined periods adapted to the operation of the installation, programmed or not, or even at times not predefined according to the quantity of body 5 and other elements stopped by the filtering surface. The implementation of the scanning mechanism can be performed manually or automatically. As variants not shown: the system for intercepting and collecting the cleaning bodies may comprise several filter elements instead of one; the filtering element may be formed of several portions assembled together; - The collection hoppers may take a different shape and their number and dimensions may vary; 15 - the obstacles 39 (ex: bridges in FIG. 4) can take all forms: gutters, etc ....; the drive system 36 may alternatively comprise a jack, a rack, a screw, a chain, a belt ... the perforated plate 28a, 28c may alternatively be a porous flank.
    [0013] FIGS. 5 and 6 illustrate an alternative embodiment of an alternative mechanical scanning and collection system according to the invention in which either the filtering surface or the cleaning device is capable of performing a rectilinear translational movement on the long and against the other element that is motionless. The filtering surface is flat in this variant. In these figures, the system 117 comprises a flat filter element 125 (with an upstream face 125a and a downstream face 125b planes) installed substantially perpendicular to the axis X of the sleeve 118, in the body 119 thereof. At each of the two opposite peripheral edges 125c, 125d, are disposed the collection openings opening into the collection hoppers located downstream (the arrangement is identical to that of Figure 4). Here, two collecting openings 126a, 126b, on the one hand, and 126c, 126d, on the other hand, are provided along each respective peripheral edge 125c, 125d 3038041-17 (Fig. 6). The collection hoppers 127a, 127c (FIG.5) are in the form of a turbulence chamber, equipped with a vortex generating obstacle 139 and one of the two opposite flanks, 128a, 128b is, for example, porous (not necessarily perforated). . Tubings 138 are provided in the opposite side of each hopper for the extraction of the cleaning bodies. The system 117 comprises a mechanical sweeping cleaning device 130 which comprises a mechanical scanning member 131 (brush, comb, flexible flap ..) which here has a general shape of scraper. The member 131 extends transversely in the sleeve, parallel to the edges 125c, 125d and comprises a support rod 132 connected to a drive element 136 such as a jack, a rack, a screw, a chain, a belt . Under the action of the drive element 136, the member 131 moves like a piston and adopts a rectilinear translational movement (perpendicular to the edges 125c, 125d) along the upstream face 125a and by rubbing / scraping the latter, in the forward direction, from the edge 125c to the edge 125d (Figs 5 and 6), then in the return direction, from the edge 125d to the edge 125c (reciprocating movement to and from the member 131). The bodies stopped by the filter element 125 are unhooked / detached by the member 131 and pushed by the latter along the filter element towards one or the other edge 125c, 125d (in the direction of displacement) and in adjacent openings where they are then evacuated via the hoppers and tubings 138. The reciprocating movement can be done once (one way and return) or several times consecutively if necessary (this also applies in the mode of Figures 1 to 4 and the variants described before and after).
    [0014] The system 117 includes many other elements identical to those of the preceding figures and which will not be described again here. The system 117 can be used when the space available axially for the sleeve is limited because the axial size of the system is reduced. FIG. 7 illustrates a second mode of use of the system according to the invention in which the system 17 acts as a pure filter, for example arranged upstream of the exchanger 10 in FIG. 1 to protect it, instead of filtration means 13.
    [0015] In Figure 7 the same elements as those of the figures of the first mode retain the same references for convenience. The outlet pipes 49a, 49b connected to the outlet pipes 38 of the collection hoppers 27a-c join a single pipe 49c equipped with a valve Vch and which is connected for example downstream of the exchanger or to the sewer ( not shown). The description and operation of the system 17 are the same as in the first mode with the cleaning bodies 15. The tubings 38 and the pipes 49a-c may be of greater diameter than that used in the mode of FIG. , downstream of the exchanger, for the extraction of the only cleaning bodies. This arrangement eliminates larger debris. The outflow from the collection hoppers 27a-c is created by the pressure difference prevailing in the plant between the upstream end of the exchanger to be protected 15 and for example the downstream thereof where the pipe 49c opens. Figures 8a and 8b illustrate two alternative embodiments in which the filter element has a non-planar filter surface, for example semi-cylindrical and the cleaning device has the general shape of squeegee of Figures 5 and 6 in view. However, the mechanical scanning member 20 of the cleaning device extends transversely to the surface in a curved shape corresponding to the curvature of the semi-cylindrical upstream face of this filtering surface, which allows it to move by rubbing this upstream face. The elements not shown in these figures are identical to those of the other figures or adapted for purposes of shape difference.
    [0016] FIG. 8a shows a filtering surface 140 whose upstream face 140a is the concave face (internal face) of the semi-cylindrical filter element and the cleaning device 142 comprises a mechanical scanning member 144 whose only difference with the member 131 of Figures 5 and 6 is its transverse curvature adapted to that of the upstream face 140a.
    [0017] FIG. 8b shows a filtering surface 150 whose upstream face 150a is the convex face (external face) of the semi-cylindrical filter element and the cleaning device 152 comprises a mechanical scanning element 3038041 19 154 whose only difference with the member 131 of Figures 5 and 6 is its transverse curvature adapted to that of the upstream face 150a. All the advantages and characteristics related to the modes and variants of FIGS. 1 to 7 also apply to the variants of FIGS. 8a and 8b, except in the case of incompatibility or technical impossibility. Although the above description of the different modes and variants has been made with a mobile cleaning device and a fixed filter element, this description also adapts to the opposite situation: fixed cleaning device and a movable filter element.
    [0018] It will be appreciated that in all that precedes the cleaning device is formed of a single element. However, the interception and collection system may be duplicated as needed and / or have more than one mechanical scanning device. This member or these members may be mounted movably relative to their support on the cleaning device.
    权利要求:
    Claims (19)
    [0001]
    REVENDICATIONS1. System for intercepting and collecting bodies (15) conveyed by a flow of a fluid, characterized in that it comprises: - a pipe portion (18) comprising an internal face which delimits an axial internal passage for the fluid flow, - at least one filter element comprising a filtering surface (25) having a first upstream face (25a) and a second downstream opposite face (25b), the filtering surface extending transversely in the internal passage so as to intercept , by its first upstream face, bodies conveyed by the flow while leaving clear several collection openings (26a, 26b) between the filtering surface and the inner face of the pipe portion, - a cleaning device (30) which is arranged opposite the first upstream face (25a) of the filtering surface and which is capable of mechanically scanning said first upstream face, the cleaning device (30) and said at least one filtering element (25); both in a reciprocating relative movement back and forth relative to each other so that each zone of the first upstream face of the filtering surface is mechanically swept by the cleaning device during each movement relative alternative to go and return to direct the bodies intercepted by the first upstream face (25a) of the filter surface to the collection openings of said bodies.
    [0002]
    2. System according to claim 1, characterized in that the filtering surface (25) has a general shape which extends both transversely and axially in the internal passage so that the bodies intercepted on an area of the first upstream face (25a) of the filtering surface and swept by the cleaning device (30) along said first upstream face of the filtering surface towards one or more collection openings (26a, 26b).
    [0003]
    3. System according to claim 1 or 2, characterized in that the collection openings are disposed adjacent to two opposite peripheral edges of the filtering surface.
    [0004]
    4. System according to claim 3, characterized in that it comprises, at each of two opposite peripheral edges of the filtering surface, at least 3038041 21 a collection hopper (27a, 27b) bodies disposed downstream of at least a collection opening (26a, 26b) and communicating with said at least one collection opening.
    [0005]
    5. System according to claim 4, characterized in that each collection hopper (27a, 27b) of the bodies forms a turbulence chamber having at least one obstacle (39) at its inlet which is capable of generating fluid swirls in the chamber. chamber when a flow of fluid (F2) meets said at least one obstacle.
    [0006]
    6. System according to one of claims 1 to 5, characterized in that the filtering surface has a general shape selected from the following geometrical shapes: a semi-cylindrical surface (25) whose concave face corresponds to the first face Upstream, a semi-cylindrical surface (25) whose convex face corresponds to the first upstream face, a planar surface formed of a panel substantially perpendicular to the axis of the pipe portion.
    [0007]
    7. System according to one of claims 3 to 5 and claim 6, characterized in that, when the filtering surface is a semicylindrical surface (25) whose inner face corresponds to the first upstream face, at least one collecting opening (26a, 26b) of the bodies is disposed on each side of said filtering surface, between the inner face of the pipe portion and a peripheral edge of the filtering surface, at least one collection hopper (27a, 27b). bodies being disposed downstream of said at least one collecting opening.
    [0008]
    8. System according to one of claims 1 to 7, characterized in that the pipe portion (18) also comprises the cleaning device (30).
    [0009]
    9. System according to one of claims 1 to 8, characterized in that the pipe portion (18) has a cross section of polygonal shape. 30
    [0010]
    10. System according to one of claims 1 to 9, characterized in that the cleaning device (30) is movable while said at least one filter element (25) is fixed or vice versa. 3038041 22
    [0011]
    11. System according to one of claims 1 to 10, characterized in that one of the cleaning device (30) and said at least one filter element (25) is adapted to perform a pivoting movement around a fixed axis or to perform a rectilinear translational movement, each movement being an alternating forward and backward motion.
    [0012]
    12. System according to one of claims 1 to 11, characterized in that the cleaning device (30) comprises one or more mechanical scanning members which are in contact with the first upstream face (25a) of the filter surface. 10
    [0013]
    13. The system of claim 12, characterized in that the filtering surface extends in two transverse directions perpendicular to each other, the one or more mechanical scanning members extending transversely in one of the two transverse directions and over the entire corresponding dimension of the first upstream face. 15
    [0014]
    14. System according to claims 3 and 13, characterized in that the one or more mechanical scanning members extend parallel to the two opposite peripheral edges of the filtering surface.
    [0015]
    15. System according to one of claims 12 to 14, characterized in that the filtering surface is formed by a filtering grid bars 20 defining between them openings through which the fluid flows and in which bodies are likely to be housed, the one or more mechanical scanning members being capable, in contact with the first upstream face (25a) of the filtering surface, to penetrate at least partially into the openings of the grid in order to dislodge the possible bodies which are housed. 25
    [0016]
    16. System according to one of claims 1 to 15, characterized in that the bodies conveyed by the flow are cleaning bodies (15) for heat exchanger.
    [0017]
    17. Installation (1) comprising: - at least one tubular heat exchanger (10), - a supply line of a fluid (11) connected to an inlet of said at least one heat exchanger, - a pipe of discharging fluid (12) connected to an outlet of said at least one heat exchanger, 3038041 23 - a plurality of cleaning bodies (15) conveyed within said at least one heat exchanger for cleaning thereof, Interception and collection of cleaning bodies disposed on the fluid discharge pipe, characterized in that the system (17) for intercepting and collecting the cleaning bodies is in accordance with one of claims 1 to 16.
    [0018]
    18. A method of collecting bodies (15) conveyed by a flow of a fluid, characterized in that the method is implemented in a system (17) for intercepting the bodies conveyed by the flow of fluid which comet 10 takes: - a pipe portion (18) comprising an inner face which defines an axial internal passage for the flow of the fluid, - at least one filter element comprising a filtering surface (25) having a first upstream face (25a) and a second opposite side downstream 15 (25b), the filtering surface extending transversely in the internal passage so as to intercept, by its first upstream face, bodies carried by the flow while leaving cleared several collection openings (26a, 26b); ) between the filtering surface and the inner face of the pipe portion, the method comprising the step of: moving said at least one filtering element (25) or cleaning device (30) into movement in a reciprocating back and forth movement for mechanical scanning of each zone of the first upstream face (25a) of the filtering surface by contact with the cleaning device vis-à-vis, mechanical scanning of the surface for directing the bodies intercepted by the first upstream face of the filtering surface to the collection openings (26a, 26b) of said bodies.
    [0019]
    19. The method of claim 18, characterized in that the cleaning device (30) is moved while said at least one filter element (25) is fixed or vice versa.
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    同族专利:
    公开号 | 公开日
    CN108027228A|2018-05-11|
    KR101892488B1|2018-08-28|
    US20180180365A1|2018-06-28|
    EP3109583A1|2016-12-28|
    WO2016207572A1|2016-12-29|
    ES2657859T3|2018-03-07|
    FR3038041B1|2017-07-21|
    EP3109583B1|2017-11-29|
    KR20180017205A|2018-02-20|
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    法律状态:
    2016-06-27| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-30| PLSC| Search report ready|Effective date: 20161230 |
    2017-06-21| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-26| PLFP| Fee payment|Year of fee payment: 4 |
    2019-06-28| PLFP| Fee payment|Year of fee payment: 5 |
    2021-03-12| ST| Notification of lapse|Effective date: 20210205 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1555939A|FR3038041B1|2015-06-26|2015-06-26|SYSTEM FOR INTERCEPTING AND COLLECTING ALTERNATIVE SCAN CLEANING BODIES|FR1555939A| FR3038041B1|2015-06-26|2015-06-26|SYSTEM FOR INTERCEPTING AND COLLECTING ALTERNATIVE SCAN CLEANING BODIES|
    PCT/FR2016/051563| WO2016207572A1|2015-06-26|2016-06-24|System for intercepting and collecting cleaning bodies by alternating sweeping|
    US15/739,342| US20180180365A1|2015-06-26|2016-06-24|System for intercepting and collecting cleaning bodies by alternating sweeping|
    EP16176241.4A| EP3109583B1|2015-06-26|2016-06-24|System for intercepting and collecting cleaning bodies by alternating sweeping|
    ES16176241.4T| ES2657859T3|2015-06-26|2016-06-24|Interception system and collection of cleaning bodies by alternative scanning|
    CN201680049424.4A| CN108027228A|2015-06-26|2016-06-24|For intercepting and collecting the system of cleaning block by alternately cleaning|
    KR1020187002629A| KR101892488B1|2015-06-26|2016-06-24|A system for intercepting and recovering cleaning bodies by alternating sweeping|
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