• 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:
    SUMMARY A device for positioning an evacuation pipe (6) of an evacuation system in a drying cylinder (1), the heat jacket (2) has inner circumferential grooves (3) for condensate, which are formed as a result of heat transfer, which evacuation system comprises an outlet means and a plurality evacuation pipes connected to the outlet means, the evacuation system evacuating the condensate from the grooves via the evacuation pipes and the outlet means, the device having a pipe positioner (14) arranged within an end portion (12) of the evacuation pipe which is located closer to the outlet means. a mounting device (15) for attaching the evacuation tube to the outlet means and a lockable connection (16) connecting the evacuation tube to the mounting device (15). According to the invention, the lockable connection is a one-way connection, which defines a center of rotation for rotating the evacuation pipe in a plane to enable positioning of the evacuation pipe in relation to the bottom surface of the track. Figs. 1 and 4
    公开号:SE1000911A1
    申请号:SE1000911
    申请日:2010-09-08
    公开日:2012-03-09
    发明作者:Johnny Aanerud
    申请人:Metso Paper Karlstad Ab；
    IPC主号:
    专利说明:

    A disadvantage of the known device is that the length of the evacuation tube is adapted to a specific drying cylinder and its diameter. A set of evacuation tubes must therefore be provided for each size of drying cylinders with respect to their diameters.
    Another disadvantage is that the mounting of the evacuation pipe is inconvenient and time consuming in that it must be carried out directly inside the drying cylinder and in addition that the adjustment of the evacuation pipes must be done one by one without being able to use the setting of a previous, already mounted evacuation pipe. The object of the present invention is to provide an improved positioning device for evacuation pipes, which eliminates the above-mentioned problems and which enables evacuation pipes with one and the same predetermined length to be used for several, with respect to the diameter, different size drying cylinders and that the mounting of the evacuation pipes can be performed on significantly faster, simpler and more convenient way than with the above-mentioned known device.
    The positioning device according to the invention is characterized in that said lockable connection is a hinge connection, which defines a center of rotation for rotating the evacuation pipe in at least one vertical plane to enable positioning of the evacuation pipe in relation to the bottom surface of the rafter.
    The invention will be described in more detail with reference to the drawings.
    Fig. 1 is an end view of parts of a drying cylinder, the end of which has been removed, showing two of a plurality of positioning devices according to the invention of a condensate evacuation system. Fig. 2 shows the positioning devices in section.
    Fig. 3 shows one of the positioning devices comprising an evacuation pipe and first and second pipe positioners before mounting at a manifold of the evacuation system.
    Fig. 4 shows the first pipe positioner in cross section.
    Fig. 5 shows the second pipe positioner in cross section.
    Figs. 6 and 7 show the second pipe positioner with its different parts separated.
    Figs. 8 and 9 show the positioning device in section and from the side, the second tube positioner being of known type.
    Fig. 10 is a perspective view of the second tube positioner of Figs. 8 and 9.
    Fig. 11 is a sectional view of the jacket of the drying cylinder taken along the line X1-X1 in Fig. 3, showing the evacuation tube and the second tube positioner.
    Figures 1 and 2 show an inner portion of a steam-heated drying cylinder 1, which is mounted in a drying portion of a paper machine for producing a paper web.
    The drying cylinder has a jacket 2, which has an outside on which the paper web is dried, and an inside which is provided with a plurality of axially evenly spaced endless circumferential grooves 3, the center of which coincides with the center axis of the drying cylinder 1. The grooves 3 suitably have a round, concave bottom surface 4. The grooves 3 delimit ridges 5 between them, the top surfaces 30 of the grooves 5 and the bottom surfaces 4 and side walls of the grooves 3 together forming an inner circumferential surface for heat transfer. Such internally ILO 15 grooved drying cylinders 1 are used i.a. in the drying section of a tissue paper machine for producing tissue paper and thereby has a relatively large diameter, which can vary from one machine to another. Furthermore, the drying cylinder 1 has a hollow center hub and two opposite shaft pins, which are connected to the center hub for extending through the opposite side ends of the drying cylinder 1. The drying cylinder 1 is rotatably mounted by means of the shaft journals, which thus define the axis of rotation of the drying cylinder 1.
    The energy for drying the paper web is supplied in the form of steam to the inner space of the drying cylinder 1. The steam condenses on the inner jacket surface, and the heat is conducted through the jacket 2 to its outside, with which the paper web is in contact. During operation, condensate accumulates in the form of a film on the bottom surface of each groove 3, which condensate film largely determines the transition resistance from steam to jacket. An efficient heat flow presupposes that the grooves 3 are kept as free as possible from condensate. In order to empty each groove 3 of condensate as efficiently as possible, a special condensate evacuation system was used, which comprises a plurality of elongate evacuation tubes 6, commonly referred to as suction tubes and arranged in a plurality of evenly distributed groups around the inside of the jacket 2. Furthermore, the evacuation system comprises an outlet means, which in turn comprises a plurality of axially arranged manifolds 7, a riser from each manifold 7, a common center connection for the riser through said center hub and through one of the shaft pins to the outside of the drying cylinder 1 for further transport. The number of manifolds 7 thus corresponds to the number of said groups. The manifolds 7 are arranged eccentrically and axially with respect to the center axis of the drying cylinder 1. Each evacuation tube 6 has an end portion 9 with an open end 10, with which the space 11 of the groove 3 is in open communication, and an end portion 12 with an open end 13, which opens into the manifold 7, see Fig. 2 During operation, the opening 10 of the end portion 9 shall be located at a predetermined distance from the bottom surface 4 of the groove 3 as shown in Figs. 1 and 11.
    Each evacuation pipe 6 is provided with a device for positioning the evacuation pipe 6 in relation to the inside of the jacket 2 and more specifically in relation to the bottom surface 4 of the groove 3 in order to maintain the above-mentioned predetermined distance. The device comprises a first pipe positioner or pipe positioner 14, which is arranged within the end portion 12. The first pipe positioner 14 comprises a mounting device 15, see Figs. 3 and 4, for mounting the evacuation pipe 6 at the collecting pipe 7 and a lockable connection 16, which connects the evacuation pipe 6 with the mounting device 15. According to the present invention, said connection 16 is a lockable hinge connection, which in the unlocked state hingedly connects the evacuation tube 6 to the mounting device 15. The hinge connection 16 forms a center of rotation for rotation of the evacuation tube 6 in at least one vertical plane, i.e. a plane coinciding with the center plane of the groove 3, which intersects the center axis of the drying cylinder 1 at right angles. The degree of said rotation is carried out depending on the diameter of the drying cylinder 1 and the depth of the groove 3 so that an open end 10 of the evacuation tube 6 is located at a predetermined distance from the bottom surface 4 of the groove 3. is permanently attached, e.g. by welding, on the evacuation tube 6 at a predetermined distance from said open end 10 of said evacuation tube 6 of said end portion 9. The inner hinge body 17 is formed with a curved, outer hinge surface 18, which comprises surface parts 19, 20, which at least face forwards and backwards in the longitudinal direction of the evacuation tube 6 and in the direction of the manifold 7. Furthermore, the hinge connection 16 comprises an outer hinge body 21, which consists of a first part 22 and a second part 23, see Figs. 3 and 4, which are connected separately with each other and which together enclose the inner hinge body 17. Each hinge body part 22, 23 is provided with an inner hinge surface 24 resp. 25, see Fig. 4, which has the same shape and the same radius as the hinge surface 18 of the inner hinge body 17. The two hinge body parts 22, 23 are arranged to be brought together into a unit, i.e. to said outer hinge body 21, their curved inner hinge surfaces 24, 25 facing each other being arranged to co-operate with the curved hinge surface 18 of the inner hinge body 17 to form a slidable co-operation between the hinge surface surfaces 18, 24 facing each other in a first, initial position. , 25, in which initial position the evacuation tube 6 has the possibility of rotating around said center of rotation, which is thus defined by the guide surfaces 18, 24, 25, as described above. With continued forced joining of the two hinge body parts 22, 23 towards each other, the friction between the facing hinge surfaces 18, 24, 25 increases until a completely locked position of the hinge connection 16 is reached, whereby the evacuation tube 6 is fixed against rotation around said center of rotation. The mounting member 15 and the hinge body part 22 located closest to the hinge body 17 are suitably made in one piece as shown in Figs. 3 and 4.
    The mounting member 15 and the outer hinge body 21 have axially through center holes 31, 32, see Fig. 4, which have a larger diameter than the evacuation tube 6 in order thereby enabling said rotation of the evacuation tube 6.
    In the embodiment shown of the lockable hinge connection 16, it consists of a ball joint, the said curved hinge surfaces 18, 24, 25 being spherical, whereby the evacuation tube 6 becomes rotatable in all directions.
    The mounting device 15 for attaching the evacuation pipe 6 to the manifold 7 comprises an externally threaded sleeve 10 for screwing into an internally threaded hole 26 in a wall of the manifold 7, which threaded hole is connected to the interior of the manifold 7. The hole 26 center axis is directed towards the area of the groove 3, where the evacuation pipe 6 is to suck in condensate. It will be appreciated that all the mounting holes 26 of the manifold 7 have their center axes aligned in the same manner with their corresponding areas, which will then lie on and be cut by a common axial line. A screw-in stop 27 is formed at the transition to the ball joint 16. The first joint body part 22 is cylindrical and has an external thread. In the embodiment shown, this first hinge body part 22 and said sleeve 15 are formed in one piece, said screw stop 27 being formed by a radial, circumferential surface in the transition therebetween in that the first hinge body part 22 has a larger diameter than the sleeve 15. The second hinge body part 23 is in the form of a nut having an internal thread and a diameter at this thread portion which are adapted to the outer diameter of the first hinge body part 22 and its thread so that the nut 23 can be screwed onto the first hinge body part 22 to form a screw joint while enclosing the the inner spherical hinge body 17. The side of the nut 23 facing away from the threaded portion has a wall 28 which is provided with a center hole 29 through which the evacuation tube 6 extends and also allows a small portion of the inner spherical hinge body 17 to project therefrom for to thereby enable the evacuation pipe 6 to be rotated in the desired manner, when the ball joint is in the released condition. Reference numeral 36 denotes a locking plate which is supported by the sleeve 15 and which is bendable down over the nut 23 so that it is locked against twisting as shown in Figs. 1 ~ 4.
    The positioning device further comprises a second tube positioner or tube positioner 40, which is arranged within the said end portion 9 of the evacuation tube 6, which is located closest to the jacket 2. The second tube positioner 40 comprises a support body 41, which is designed to rest on the top surfaces 30 of two successive ridges 5 to extend in a direction transverse to the groove 3 located therebetween.
    The support body 41 is delimited by two facing end surfaces 42, 43, two facing side surfaces 44, 45, an upper surface 46 and a lower surface 47, which side surfaces 44, 45 and upper and lower surfaces 46, 47 extend between said end surfaces 42, 43. surface 47 curved as shown, e.g. circular-cylindrical. Preferably, at least the lower first imaginary plane extends through the end surfaces 42, 43 and the upper and lower surfaces 46, 47. A second imaginary plane extends through the two end surfaces 42, 43 and the two side surfaces 44, 45 and intersects the said surface. first plane at right angles. The plane may define the center plane of the support body 41, but one or both of the planes may be located slightly adjacent to said center plane.
    A first through hole 48 extends between the side surfaces 44, 45 and has a diameter slightly larger than the diameter of the evacuation tube 6 to receive the evacuation tube 6 therein during sliding fit so that the support body 41 can be displaced along the evacuation tube 6 to the desired position relative to the evacuation tube 6. end 10 of the end portion 9 or alternatively the said center of rotation of the evacuation tube 6. The first hole 48 has a center line which coincides with said second plane. Furthermore, a second, continuous heel 49 is arranged to extend between the upper surface 46 and the lower curved surface 47, which second hole 49 has a larger diameter than the first hole 48. The second hole 49 has a center line which coincides with said first floor.
    The center lines of the two holes 48, 49 intersect at right angles and their common point of intersection coincides with the point of intersection of the two planes mentioned. The second tube positioner 40 further comprises a multifunctional elongate pin 50, which comprises a central portion 51, which is designed to be received in said second hole 49 with sliding fit, the portion 51 thus having a diameter which is slightly smaller than the diameter of the second hole 49. The said portion is provided with a diametrical, through hole 52, which has the same diameter as the first, smaller hole 48 of the support body 41 to thereby align with the latter hole 48 so that the evacuation tube 6 can be inserted into the smaller hole 48 of the support body 41 from one end and further through the hole 52 of the pin portion and then further through the smaller hole 48 of the support body 41 and out through its other end. Thereby a unit is formed, which is slidable along the evacuation pipe 6 to be moved and adjusted in the desired position, when said predetermined distance between the bottom 4 of the groove 3 and the open end 10 of the evacuation pipe 6 has been reached. Furthermore, the pin 50 comprises a lower guide and support portion 53, which extends from the lower surface 47 to be received in the groove 3 for the purpose of guiding and supporting the tube positioner 40 in the groove so that the evacuation tube 6 is kept in the correct, aligned position.
    The length of the lower guide and support portion 53 is less than the depth of the groove 3. The second pipe positioner 40 further comprises a locking device 54 for locking the three construction elements 6, 41, 50 to each other. Such a locking device 54 can be designed and arranged in a number of different ways. In the embodiment shown, it comprises a nut 55 and an upper threaded portion 56 of the pin 50 projecting from the upper surface 46 of the support body 41, on which threaded portion the nut 55 is screwed to finally press against the upper surface 46 of the support body 41 and tightened so that the support body 41 , the evacuation tube 6 and the pin 50 are locked together. If a position adjustment must be made, the nut 55 needs to be loosened a few or more turns until the engagement is released so that the second pipe positioner 40 can be moved along the evacuation pipe in the desired direction. In order to reduce the weight of the support body 41, it can be provided with recesses on both sides of the hole 49 and extending downwards in the direction from the upper surface 46 a suitable piece, e.g. half the distance down to the lower surface.
    Fig. 8 shows another embodiment of a second pipe positioner 60 of the type used in the known positioning device, but which can also be used in combination with the first pipe positioner 14 according to the present invention. The second tube positioner 60 according to Figs. 8, 9 and 10 has a transverse support body 61 for abutment against two adjacent ridges 5 and a support body 62, which projects perpendicularly from the support body 61 to be received in the groove 3. The support body 62 is provided at its lower end portion with a through-going, smooth hole 63, see Fig. 10, for receiving the evacuation tube 6. A threaded hole 64 extends from the top of the support body 61 down through it and further through the support body 62 up to the said smooth hole 63.
    A locking device 65, which comprises a threaded rod 66, is screwed into the threaded hole 64 to abut against the evacuation tube 6 and lock it in the desired position of the evacuation tube 6, which position is locked by means of a locking nut 67, which is supported by the threaded rod 66, see Fig. 10. This embodiment of the tube positioner 40, which has a T-shape, is manufactured for use in a groove 3 of a certain depth. Another groove depth thus requires a T-shaped tube positioner, the support body 62 of which is shorter or longer depending on said groove depth.
    The first pipe positioner according to the invention enables one and the same length of the evacuation pipe 6 to be used for drying cylinders 1 with different diameters in that the first pipe positioner 14 is rotated relative to the mounting shaft 33, see Fig. 3, which is defined by the mounting device 15, which is fixed in the manifold 7 so that the center line 34 of the evacuation tube 6, see Fig. 3, forms an obtuse angle with the mounting shaft 33, thus the center line 34 can extend downwards, as shown in Fig. 3, or upwards in relative to the fixed mounting shaft 33. In both cases the center line 34 forms an acute angle α, see Fig. 3, with its tangent 35 at the point of intersection with the bottom surface 4 of the groove 3 of the evacuation tubes 6 can be made in a faster, (or with the outside of the jacket 2) . Mounting simpler and more convenient in that it is only necessary to mount a first evacuation pipe 6 at the manifold 7 and thereby set a desired angle, which is fixed with the nut 23 of the ball joint 16, after which the mounting device 15 is detached again from the manifold 7 to be used as a template for setting the corresponding angle of the other evacuation pipes 6 of the manifold 7, which work can thus take place outside the drying cylinder 1, after which the thus completed evacuation pipes 6 with associated devices can be mounted at the collecting pipe 7 inside the drying cylinder 1. If an adjustment of an angle must be made, this is a simple action by loosening the nut 23 of the ball joint 16 to enable rotation of the evacuation tube 6 up or down depending on the degree of adjustment required. The right angle in the above-mentioned operations has been achieved when the open end 10 of the evacuation tube 6, which faces the jacket 2, is located at a predetermined distance from the bottom surface 4 of the groove 3. This distance is normally 3-5 mm. This distance is fixed by means of the second pipe positioner 40 or 60, which is already preset on the evacuation pipe 6, but which can be readjusted if necessary. The second pipe positioner 40, 60 is necessary to absorb the centrifugal forces which act on the evacuation pipe 6 during operation and which would otherwise press in the end portion 9 of the evacuation pipe 6 in the direction of the bottom surface 4 of the groove 3. In some cases, e.g. when the evacuation tube is relatively short and / or is extra flexurally rigid, it may be possible to omit the second tube positioner 40 or 60.
    A device according to the invention, which also includes a second pipe positioner 40, enables it to be used for all drying cylinders 1 regardless of the depth of the grooves 3 on the inside of the jacket 2.
    In the described embodiment with a ball joint 16, the center of rotation of the evacuation tube 6 is thus defined by the center of the spherical joint surface 18 of the ball joint 16. In an alternative embodiment of the joint 16, the joint surface is cylindrical, defining a horizontal center axis thus forming the center of evacuation tube 6.
    权利要求:
    Claims (10)
    [1]
    Device for positioning an evacuation pipe (6) of an evacuation system, which is arranged in a steam-heated drying cylinder (1) of a paper machine, which drying cylinder (1) has a jacket (2) which has circumferential grooves (3) on its inside ) for collecting condensate formed as a result of heat transfer through the jacket (2) to its outside, which evacuation system comprises an outlet means which opens onto the outside of the drying cylinder (1) and a plurality of evacuation tubes (6) arranged in a a plurality of axial groups and connected to the outlet means, and which evacuation system is arranged to evacuate the condensate from said groove (3) of the drying cylinder (1) to its outside via said plurality of evacuation tubes (6) and outlet means, which device comprises a first pipe positioner (14), which is arranged within an end portion (12) of the evacuation tube (6), which is located closest to said outlet means, which tube positioner (14) comprises a mounting device (15) for attaching the evacuation pipe (6) at the outlet means and a lockable connection (16) connecting the evacuation pipe (6) to the mounting device (15), characterized in that said lockable connection (16) is a hinge connection defining a center of rotation for rotating the evacuation pipe (6) in at least one vertical plane to enable positioning of the evacuation pipe (6) relative to the bottom surface (4) of the groove (3).
    [2]
    Device according to claim 1, characterized in that the degree of said rotation is performed depending on the diameter of the drying cylinder (1) and the depth of the groove (3) so that an open end (10) of the evacuation tube (6) is located at a predetermined distance from the groove ( 3) bottom surface (4). 10 15 20 25 30 35 14
    [3]
    Device according to claim 1 or 2, characterized in that the hinge connection (16) - an inner hinge body (17), which is fixedly mounted on, comprises the evacuation tube (6) at a predetermined distance from the open end (13) of the end portion (12), and which is formed with a curved hinge surface (18), and - an outer hinge body (21), which consists of a first part (22) and a second part (23), which are separably connected to each other and which are arranged together to enclose it. the inner hinge body (17), which hinge body parts (22, 23) have internal hinge surfaces (24, 25) which are adapted to the hinge surface (18) of the inner hinge body (17) for slidable cooperation during said rotation of the evacuation tube (6) and for reading friction co-operation in each set position of the evacuation pipe (6).
    [4]
    Device according to claim 3, characterized in that the mounting device (15) and the body part (22) closest to it of the outer hinge body (21) are made in one piece.
    [5]
    Device according to claim 3 or 4, characterized in that the mounting device (15) and the outer hinge body (21) have axially continuous center heel, which has a larger diameter than the evacuation tube (6) to thereby enable said rotation of the evacuation tube (6).
    [6]
    Device according to one of Claims 1 to 5, characterized in that the lockable hinge connection (16) is a ball joint with spherical hinge surfaces (18, 24, 25).
    [7]
    Device according to any one of claims 1-6, characterized in that it comprises a second pipe positioner (40; 60), which is arranged within an end portion (9) of the evacuation pipe (6) which is located closest to the jacket (2) and which comprises A support body (41; 61), which is designed to rest on the top surfaces (30) of two adjacent ridges (5), and - a locking device (54; 65) for fixing the evacuation tube (6) at the tube positioner (40; 60), the tube positioner being provided with - a first, through hole (48; 63) for receiving the evacuation tube (6) and - a second hole (49; 65) for receiving the locking device ( 54; 65), which second hole (49; 65) opens into the first hole (48; 63).
    [8]
    Device according to claim 7, characterized in that said first hole (48) is arranged in the support body (41).
    [9]
    Device according to claim 8, characterized in that the portion (51) of the locking device (54), which is located in the support body (41), is provided with a through-going, third hole (52) arranged to cooperate with and align with the support body ( 41) first hole (48) so that the evacuation tube (6) extends through both the support body (41) and the locking device (54), the locking device (54) being arranged to enclose the evacuation tube (6) and be brought to a locked position in cooperation with the support body (41). 41), in which locked position the evacuation tube (6), the support body (41) and the locking device (54) are fixed to each other.
    [10]
    Device according to claim 9, characterized in that the second hole (49) for the locking device (54) is continuous and that the locking device (54) comprises a lower, free guide and support portion (53), which is arranged to project from the support body ( 41) to be received freely in the jacket groove (3).
    类似技术:
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    同族专利:
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    EP2614182B1|2015-05-13|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1000911A|SE535153C2|2010-09-08|2010-09-08|Positioning device for evacuation pipes in a drying cylinder|SE1000911A| SE535153C2|2010-09-08|2010-09-08|Positioning device for evacuation pipes in a drying cylinder|
    EP20110823844| EP2614182B1|2010-09-08|2011-09-01|Steam-heated drying cylinder|
    US13/818,431| US8959790B2|2010-09-08|2011-09-01|Positioning device for a drain pipe in a drying cylinder|
    BR112013000375-8A| BR112013000375B1|2010-09-08|2011-09-01|VAPOR HEATED DRYING CYLINDER|
    CN201180035538.0A| CN103154365B|2010-09-08|2011-09-01|For the positioner of the drainpipe in drying|
    PCT/SE2011/051052| WO2012033442A1|2010-09-08|2011-09-01|A positioning device for a drain pipe in a drying cylinder|
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