• 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 method for preparing for installation of a web-shaped leakage indicator (170) under one or more pipes (120) in a single-pipe drawing culvert (110, 112), between a first (102b) and a second (102a) access point located at a distance from each other in longitudinal direction of the piping culvert. The method comprises the steps of: inserting a rod (150) into the pulling culvert (110, 112) below said tube (120), rotating the rod (150) about an axis of rotation extending along the length of the rod in a first direction of rotation so that the rod (150) moves in the pulling culvert ( 110, 112) transversely to an abutment surface of the piping culvert (110, 112), to move the rod (150) in the longitudinal direction in a direction from the first access point (102b) to the second access point (102a), the steps of rotating the rod (150) and moving the rod (150) is performed simultaneously and / or sequentially, to attach at the second access point (102a) an elongate member (160) to the rod (150), and to retract the rod (150) at the first access point (102b) so that the elongate member ( 160) is drawn from the second access point (102a) to the first access point (102b). Publication figure: Fig. 1
    公开号:SE1150849A1
    申请号:SE1150849
    申请日:2011-09-19
    公开日:2013-03-20
    发明作者:Hans Bengtsson
    申请人:Hans Bengtsson；
    IPC主号:
    专利说明:

    15 20 25 30 2 with the district heating pipes installed, are often too cramped and inaccessible to be able to effectively install these alarm devices.
    Summary of the Invention In view of the above, it is thus an object of the present inventive concept to provide a method for preparing for an easy and rapid installation of leakage indicators in district heating culverts.
    According to the inventive concept, a method is provided for preparing for installation of a web-shaped leakage indicator under one or more pipes in a piping culvert, between a first and a second access point located at a distance from each other in the longitudinal direction of the piping culvert.
    The method comprises the measures: inserting a rod into the piping culvert below said tube, rotating the rod about an axis of rotation extending along the longitudinal direction of the rod in a first direction of rotation so that the rod moves in the transverse direction of the piping culvert towards an abutment surface of the piping. a direction from the first access point to the second access point, the steps of rotating the bar and moving the bar being performed simultaneously and / or sequentially, attaching an elongate member to the bar at the second access point, and retracting the bar at the first access point so that the elongate member is pulled from the second access point to the first access point.
    By rotating the bar in connection with it being moved forward, the bar will be moved by rolling sideways. By moving the rod laterally to abut against a side of the culvert, and ensuring that it tends to lie against the side of the culvert, even a relatively folded rod will be able to transmit a compressive force without bending because it is kept straight by the side of the culvert and its inherent desire to lie against the side of the culvert.
    If the bar encounters an obstacle, the bar can be rotated at the same time as it is moved forward, whereby the bar will travel up over irregularities and obstacles that may be present in the piping culvert in which the bar is to be carried.
    These irregularities and obstacles can, for example, be found on the floor or side walls of the piping culvert. Thus, by the present inventive concept, the rod can be moved in an efficient manner from the first access point towards the second access point in a narrow, inaccessible passage despite the presence of these irregularities and obstacles.
    According to the method of the invention, an easy and fast installation of leakage indicators in district heating culverts is thus prepared.
    The installation of the web-shaped leakage indicator can be completed by further comprising the steps of: attaching a web-shaped leakage indicator to the elongate member, and retracting the elongate member at the second access point so that the web-shaped leakage indicator is pulled from the first access point to the second access point. The leakage indicator can thus be easily drawn from the first access point towards the second access point, which thus allows an easy and fast installation of this leakage indicator in a piping culvert, such as a district heating culvert.
    According to one embodiment, the rod comprises a plurality of interconnectable rod elements in the longitudinal direction of the rod. A first rod element can be inserted into the piping culvert, rotated and moved according to the inventive method described above, after which a second rod element can be connected to the first rod element which can then be inserted into the piping culvert, rotated and moved together with the first rod element according to the invention. procedure.
    Additional rod elements can then be connected in a similar manner until a desired length of the rod has been reached, preferably a length corresponding to at least a rectilinear distance between the first access point and the second access point. An advantage of this embodiment is that it is easy to insert single, in relation to the total length of the rod, short, rod elements into the piping culvert. The total length of the rod corresponds to the total length of all interconnected rod elements in a longitudinal direction to the rod. An additional advantage is that it is easy to achieve a desired length of the rod.
    According to one embodiment, the rod elements are substantially rotatably interconnectable so that the rod elements rotate together about the axis of rotation. Thus, by rotating a rod member included in the rod, for example a rod member at the end of the rod, the interconnected rod members can rotate together. The rotation of an individual rod element can follow the rotation of rod elements adjacent to this rod element. The interaction between the rotation of two adjacent rod elements depends, among other things, on the torsional rigidity at the nodes of these adjacent rod elements.
    Other objects, features and advantages of the present invention will become apparent from the following detailed description, the appended claims, and the figures.
    In general, all terms used in the claims are to be construed in accordance with their usual meaning in the art, unless they are explicitly defined otherwise herein. All references to "an / an / it / it [element, device, component, organ, step, etc.]" shall be construed openly as a reference to at least one example of the said element, device, component, organ, step, etc., unless otherwise explicitly stated.The steps of any method described herein need not be performed in the exact order described, unless explicitly stated otherwise.
    Brief Description of the Figures Both the above-described and further objects, features and advantages of the present invention will become more apparent from the following illustrative and non-limiting detailed description of preferred embodiments of the present invention, taken in conjunction with the accompanying figures, in which like reference numerals are used. for similar elements, wherein: Figure 1 schematically illustrates a district heating transport system in which the present inventive method can be implemented.
    Figure 2 illustrates a cross section of the district heating transport system in Figure 1 comprising two district heating pipes. Detailed Description of Preferred Embodiments Fig. 1 generally shows a district heating transport system 100 adapted to transport thermal energy from a thermal power plant, a cogeneration plant or the like. The district heating transport system 100 is located below ground level and comprises a piping culvert 110, 112 in which one or more pipes 120, or district heating pipes 120, are located. The pipes 120 are supported by beams 140. Furthermore, the system 100 comprises entrance holes 104a, 104b from which access to district heating chamber 132, and thus the piping culvert 110, 112 is allowed (for the sake of clarity, only one district heating chamber 132 is marked in Fig. 1 with a broken line). The entrance holes 104a, 104b are spatially connected to access points 102a, 102b in the piping culvert. Access points 102a, 102b define end points between which a leakage indicator 170 is to be installed.
    The detailed function of a district heating system is known to those skilled in the art and will not be described in more detail.
    The piping culverts 110, 112 comprise a plurality of district heating chambers 132, two of which appear in Fig. 1 above the lower chamber portions 130a and 130b. Furthermore, the piping culvert 110, 112 comprises a portion 110 above the pipes 120 and a portion 112 below the pipes 120. In the bottom of the piping culvert 110, 112 there is between the district heating chambers 132 one or more lug portions 142. The upper portion 110 is defined by the upper sides of the tubes 120 and a roof portion 144 which is related to the ground level. The lower portion 112 is defined on the one hand by the undersides of the tubes 120 and the beams 140 and on the other hand by a heel portion 142. The distance between the undersides of the beams 140 and the heel portion 142 is typically very small and varies along a horizontal direction. In a non-limiting example, this distance is between 2 centimeters and 10 centimeters. The lower portion 112 may also contain debris and other objects which may constitute irregularities and obstructions. The upper side 143 of the heel portion 142 consists of an uneven surface which may contain both depressions and protrusions.
    These depressions and protrusions can extend several centimeters vertically. In addition, the above-mentioned debris can constitute these depressions and protrusions. The tubes 120 are supported by a plurality of beams 140 which are spaced apart horizontally. Referring to Fig. 2, the beams 140, 240 are mounted in the side walls 246a, 246b of the piping culvert. According to an alternative embodiment, the beams 140, 240 may be attached to the floor or lug portion 242 of the piping culvert, or supported by a suspension device a roof portion 244 in the piping culvert 210, 212.
    The tubes 120 transport thermal energy via a medium, which may be, for example, water or any other suitable liquid known to those skilled in the art. As illustrated in Fig. 2, the district heating transport system 100, 200 according to the present embodiment consists of two, substantially parallel, pipes 120: a pipe 220a on the left for the supply of water and a pipe 220b on the right for the return of water. The flow directions are opposite to each other, which is indicated in the cross-sectional figure Fig. 2 with a cross (inwards) and a dot (outwards), respectively.
    In the following, a method that can be used to prepare installation and install a leakage indicator 170 under the pipes 120 is described with reference to Figs. 1 and 2.
    To implement the method, at least the following components are required: a rod 150, an elongate member 160 and a leakage indicator 170.
    The rod 150 consists of a plurality of rod elements 150a-d interconnectable in the longitudinal direction of the rod. In Fig. 1, only four rod elements 150a-d are illustrated, but the rod 150 may of course comprise any number of rod elements. In a special case, the rod 150 may be a single rod element. Each rod element 150a-d is rigid and / or flexible and may, for example, be a metal rod, a plastic rod or the like. The rod 150 is rigid so that it can be pushed through the piping culvert. The rod 150 is flexible so that it can be bent in a wide bend in connection with the lowering of the rod from the ground surface down into the piping culvert. The rod elements 150a-d may have the same length or varying length. For example, the length of a rod element 150a-d may be between one meter and three meters, but other lengths may also be used. Each rod element 150a-d has a first and a second end which separately comprise connecting means. The connecting member at the first end of a first rod member 150a-d is adapted to fit into and attach to a corresponding connector at a second end of a second rod member 150a-d adjacent to the first rod member. In one example, the rod elements 150a-d are rotatably connectable by means of the connecting means. In another example, the rod elements 150a-d are rigidly interconnected by the connecting means.
    Alternatively, two adjacent rod elements 150a-d can be connected together by means of a connecting means external to these rod elements.
    Preferably, the external connecting means are coupled at least to the ends 150a-d of the two adjacent rod elements. At least one end of a rod member, for example the rod member 150a, is adapted to be attached to a rotating device 180. Optionally, there may be a spacer and / or a rotating arm, or pivot arm, between this rod member 150a and the rotating device 180 to facilitate rotation of the rod member. . The rotating device 180 is adapted to rotate the rod element 150a and consequently also the rod 150.
    Optionally, a relieving spring device may be provided between the rod member 150a and the rotating device 180. This relieving spring device may reduce stresses on the rod 150. Alternatively, a protective cover may enclose the relieving spring device.
    The rotating device 180 can be fixedly mounted or movably arranged. In the case of a fixed mounting of the rotating device 180, it preferably comprises a feeding device which is adapted to feed the rod 150, or the rod elements 150a-d, in at least one horizontal direction. If the rotating device 180 is movably arranged, the rod 150 can be advanced by moving the rotating device 180, at least in a horizontal direction.
    Alternatively, the rod 150 may be advanced with a feeding device which is disengaged from the rotating device 180.
    Furthermore, in use, the rotating device 180 may be above or below ground level.
    According to one embodiment, the rotating device 180 is driven mechanically.
    The rotational speed of the rod 150 is thus determined by a rotational speed, or speed, of the mechanical rotating device 180. For example, the speed of the mechanical rotating device 180 may be arranged to be between 0 and 150 RPM (revolutions per minute). Typical operating speeds of the mechanical rotating device 180 may be between 75 and 100 RPM, but other speeds may also occur.
    The rotating device 180 is preferably arranged to be able to rotate both clockwise and counterclockwise.
    According to an alternative embodiment, the rod element 150a is rotated by hand. For example, the rotating device 180 may be a pivot arm, or a handle, mounted to the rod member 150a to increase torque.
    The rotary arm can, for example, be rotated by one person. Furthermore, a spacer element may optionally be included between the rod element 150a and the rotating device 180.
    According to a further embodiment, a mechanical and a manually driven rotating device 180 is used alternately or in combination.
    The elongate member 160 may be flexible and / or rigid. For example, the elongate member 160 may be a string, a rope, a cable, a wire, a strap, a rubber band, a chain, a rod, a rod, etc. The length of the elongate member 160 is preferably at least the same as the total the length of the leakage indicator 170 to be laid out.
    The elongate member 160 is adapted to be attached to the rod 150. In one example, there is a fastener external to the elongate member 160. In another example, there is a hole in the rod 150 in which a fastener is provided.
    The leakage indicator 170 is preferably web-shaped so that it can be rolled up on a roll and easily stored and discharged when needed.
    Generally, the leakage indicator 170 includes a moisture sensitive means and is further adapted to alert in the presence of moisture on the moisture sensitive means.
    According to a preferred embodiment, the leakage indicator 170 consists of so-called leakage board, which comprises a moisture-sensitive device which is connected to an alarm device. This alarm device alarms when moisture hits the leak board.
    Furthermore, the leakage indicator 170 preferably comprises one or more connectors to which the elongate element 160 can be attached. 10 15 20 25 30 9 Optionally, there may be a spacer element between the leakage indicator 170 and the elongate member 160.
    According to an alternative embodiment, the leakage indicator 170 may be of a different shape. For example, the leakage indicator 170 may be formed of an elongate elastic, flexible or rigid material of any cross-section, such as circular, elliptical, rectangular, triangular, or the like.
    The method of preparing for installation and installing a leakage indicator 170a under the left tube 220a, according to a preferred embodiment, consists essentially of three overall steps.
    In the first step, the rod 150 is inserted through the inlet hole 104b, past the tubes 120. Fig. 1 shows a rod 150 which is bent substantially in one direction, as a U. The portion of the rod 150 located below the tubes 120 inside the piping culvert 110, 112 is substantially straight.
    According to an alternative embodiment, the rod 150 is bent in two different directions, as an S. According to a further alternative embodiment, the rod 150 is placed completely below ground level, inside the piping culvert 110, 112.
    According to the latter embodiment, the rod 150 may be substantially straight.
    According to a preferred embodiment, further rod elements 150a-d are connected to the rod 150 as the rod 150 is inserted into the piping culvert until a desired length is reached. The rod 150 can be fed in according to the methods described above, for example by means of a movably arranged rotating device 180.
    Further, the rod 150, 250a is placed to the left in the lower portion 112, 212 of the piping culvert at the access point 102b, above the lug portion 142, 242, see Figs. 1 and 2. The rod 150, 250a is then rotated by the rotating device 180, which is located above ground level, about an axis of rotation extending with the longitudinal direction of the rod 150 in a first direction of rotation. This direction of rotation is directed counterclockwise, as indicated by the arrow above the rod 250a in Fig. 2. As the rod 150, 250a rotates, it is moved in a transverse direction to the lower portion 112, 212 of the piping culvert, i.e. against the side wall 246a.
    As the rod 150, 250a is rotated, it moves forward in its longitudinal direction toward the second access point 102a. This rotation and movement can be performed simultaneously and / or sequentially. Furthermore, the rotation of the rod 150, 250a can be performed mechanically or by hand, in combination or separately in sequence.
    By rotating and moving the rod 150, 250a simultaneously, it can travel over irregularities and obstacles that may occur on the upper side 143 of the heel portion in the generally narrow lower portion 112 in the space between the heel portion 142 and the undersides of the tubes 120 and the beams 140.
    Optionally, the rotation of the rod 150, 250a may be intermittently directed clockwise so that it will travel more efficiently over certain irregularities and obstacles.
    If the rod 150, 250a gets stuck in some unevenness or obstacle, it can advantageously be moved backwards a bit towards the first access point 102b, with or without rotation directed clockwise or counterclockwise, and then again moved forward towards the second access point 102a. In this way, the unevenness or obstacle can be avoided more effectively.
    In the second step, the elongate member 160 is attached to the rod 150, 250a. Thereafter, the rod 150, 250a is retracted at the first access point 102b so that it is pulled from the second access point 102a toward the first access point 102b.
    The retraction of the rod 150, 250a can be performed mechanically or manually by hand. These actions can be performed in sequence or in combination.
    When the rod 150, 250a is retracted to the first access point 102b, it can be disconnected from the elongate member 160. Thus, the elongate member 160 extends at least between the first 102b and the second 102a access point. Preferably, the elongate member 160 has an extension that is longer than the distance between the first 102b and the second 102a access point.
    In the third step, the web-shaped leakage indicator 170a is attached to the elongate member 160 described above. Thereafter, the elongate member 160, together with the leakage indicator 170a, is retracted at the second access point 102a so that it is pulled from the first access point 102b toward the second access point 102a. 10 15 20 25 30 11 The retraction of the elongate element 160 can be performed mechanically or manually by hand. These actions can be performed in sequence or in combination.
    Thus, after the retraction of the elongate member 160, the web-shaped leakage indicator 170a is extended between the first 102a and the second 102b access point.
    According to an alternative embodiment, a further portion of the elongate member 160 is retracted to the second 102a access point so that the elongate member 160 extends between the first 102a and the second 102b access point, over the installed web-shaped leakage indicator 170a. Thus, the total length of the elongate member 160 must correspond to at least two lengths between the first 102b and the second 102a access point. The elongate member 160 overlying the web-shaped leakage indicator 170a can then be used to install additional components extending between the first 102b and the second 102a access point.
    After the installation of the web-shaped leakage indicator 170a, the elongate member 160 is preferably released from the web-shaped leakage indicator 170a.
    The web-shaped leakage indicator 170a can then be connected to an alarm device which is adapted to alarm in the presence of moisture on the web-shaped leakage indicator 170a.
    The method of preparing for installation and installing a leakage indicator 170b under the right pipe 220b is performed in complete analogy with the method of preparing to install and install the leakage indicator 170a under the left pipe 220a described above, but with a few differences.
    The rod 250b is placed to the right in the lower portion 112, 212 of the piping culvert at the access point 102b, above the lug portion 142, 242, see Figs. 1 and 2. Note in particular that the direction of rotation of the rod 250b should be directed clockwise, as indicated by the arrow above the rod 250b in Fig. 2.
    Thus, the rod 250b is moved in a transverse direction to the lower portion 112, 212 of the piping culvert, toward the side wall 246b.
    The invention has mainly been described above with reference to a few embodiments. However, embodiments other than those described above are equally possible within the scope of the invention, as defined by the appended claims, as will be readily appreciated by one skilled in the art.
    权利要求:
    Claims (4)
    [1]
    A method of preparation for installing a web-shaped leakage indicator (170) under one or more pipes (120) in a piping culvert (110, 112), between a first (102b) and a second (102a) access point spaced apart. in the longitudinal direction of the piping culvert (110, 112), the method comprising the steps of: inserting a rod (150) into the piping culvert (110, 112) below said tube (120), rotating the rod (150) about an axis of rotation extending along the longitudinal direction of the rod in a first direction of rotation so that the rod (150) is moved in the transverse direction of the piping culvert (110, 112) towards an abutment surface of the piping culvert (110, 112), to move the rod (150) in its longitudinal direction in a direction from the first access point (102b) towards the second access point (102a), the steps of rotating the rod (150) and moving the rod (150) being performed simultaneously and / or sequentially, attaching to the second access point (102a) a elongate member (160) to the rod (150), and retracting the rod (150) at the first access point (102b) so that the elongate member (160) is pulled from the second access point (102a) to the first access point (102b).
    [2]
    The method of claim 1, further comprising the steps of: attaching a web-shaped leakage indicator (170) to the elongate member (160), and retracting the elongate member (160) at the second access point (102a) so that the web-shaped leakage indicator ( 170) is drawn from the first access point (102b) to the second access point (102a). 14
    [3]
    A method according to claim 1 or 2, wherein the rod (150) comprises a plurality of rod elements (150a-d) interconnect in the longitudinal direction of the rod.
    [4]
    A method according to claim 3, wherein the rod elements (150a-d) are substantially rotatably interconnectable so that the rod elements (150a-d) rotate together about the axis of rotation.
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    同族专利:
    公开号 | 公开日
    SE536257C2|2013-07-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2019-04-30| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1150849A|SE536257C2|2011-09-19|2011-09-19|Procedure for installation of leakage indicator in district heating culver|SE1150849A| SE536257C2|2011-09-19|2011-09-19|Procedure for installation of leakage indicator in district heating culver|
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