CN220910796U - Following corrugated pipe compensator - Google Patents
Following corrugated pipe compensator Download PDFInfo
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- CN220910796U CN220910796U CN202322659859.0U CN202322659859U CN220910796U CN 220910796 U CN220910796 U CN 220910796U CN 202322659859 U CN202322659859 U CN 202322659859U CN 220910796 U CN220910796 U CN 220910796U
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- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000008602 contraction Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
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Abstract
A follow-up type corrugated pipe compensator is used for compensating expansion and contraction of a pipeline and comprises a working corrugated pipe (5), a first connecting pipe (1) and a first annular plate (2) are welded at the left end of the working corrugated pipe, a second connecting pipe (20) and a second annular plate (7) are welded at the right end of the working corrugated pipe, a third annular plate (10) is sleeved on the second connecting pipe, the left ends of a plurality of pull rods (4) are symmetrically connected to the first annular plate, a balance corrugated pipe is hermetically welded between the second annular plate and the third annular plate, an annular cavity guide pipe (6) of the balance corrugated pipe is communicated with the second connecting pipe, a fourth annular plate (15) is fixedly connected to the right end of the pull rod, and a plurality of follow-up devices are symmetrically arranged between the fourth annular plate and the third annular plate, and can enable the second annular plate and the third annular plate to move synchronously along the axial direction, so that the length of the balance corrugated pipe can be reduced as far as possible, and only one pull rod is needed for the working corrugated pipe, thereby being beneficial to reducing the production cost; meanwhile, the length of the compensator is reduced, and the compensator is convenient to transport and install.
Description
Technical Field
The invention relates to a corrugated pipe compensator which is used for compensating expansion caused by heat and contraction caused by cold of a pipeline.
Background
The corrugated pipe compensator comprises a corrugated pipe, connecting pipes are respectively connected to the left end and the right end of the corrugated pipe, the connecting pipes are connected in series in a pipeline, fluid media in the corrugated pipe can generate thrust to the corrugated pipe, the thrust is transmitted to connected external equipment through the pipeline, and the external equipment is fixed on a support, so that the support is damaged. In order to prevent the thrust from being output outwards, the prior art usually adopts a balance type corrugated pipe compensator which is provided with three corrugated pipes, namely a first working corrugated pipe, a second working corrugated pipe and a balance corrugated pipe, wherein the right end of the first working corrugated pipe is connected with the left end of the balance corrugated pipe, the right end of the balance corrugated pipe is connected with the left end of the second working corrugated pipe, a pull rod is connected between the left end of the first working corrugated pipe and the left end of the second working corrugated pipe, and a pull rod is also connected between the right end of the first working corrugated pipe and the right end of the second working corrugated pipe, wherein the average sectional area of the balance corrugated pipe is 2 times that of the first working corrugated pipe, and the structures of the first working corrugated pipe and the second working corrugated pipe are identical. The balanced bellows compensator requires the use of three bellows, which results in a substantial increase in its length and a substantial increase in its outer diameter.
Disclosure of Invention
The invention aims to reduce the number of bellows used and the volume of the bellows compensator on the basis of preventing the thrust of the compensator from being output outwards.
The technical scheme of the invention is that the following corrugated pipe compensator comprises a working corrugated pipe 5, wherein a first connecting pipe 1 and a second connecting pipe 20 are respectively welded at the left end and the right end of the working corrugated pipe, a first annular plate 2 is welded on the first connecting pipe, a second annular plate 7 is welded on the second connecting pipe, a third annular plate 10 is sleeved on the second connecting pipe, the left ends of a plurality of pull rods 4 are symmetrically connected to the first annular plate, and the right ends of the pull rods extend out of the second annular plate and the third annular plate;
The device is characterized in that a balance corrugated pipe is welded between the second annular plate and the third annular plate in a sealing way, the balance corrugated pipe consists of an inner corrugated pipe 8 'and an outer corrugated pipe 8, the inner corrugated pipe 8' and the outer corrugated pipe 8 form a cavity with an annular section, the cavity is communicated with a second connecting pipe through a flow guide pipe 6, and the axial compression sectional area of the balance corrugated pipe is equal to the axial compression sectional area of a working corrugated pipe 5;
the right end fixedly connected with fourth link 15 of pull rod, be equipped with a plurality of follower symmetrically between fourth link and the third link, follower includes rack 9 of fixed connection on second link 7, rack 9 passes third link 10, rack and gear 12 meshing, gear connection is in the one end of pivot 13, the middle part of pivot is arranged in cuboid form axle bed 16, the other end of pivot is connected with cam 18, be equipped with belleville spring 21 between cam and the axle bed, the pivot is rotated and is had fastening nut 14, fastening nut pastes with the cam mutually, the cam pastes with gyro wheel 17 mutually, the gyro wheel cover is on round pin axle 19, the round pin axle is inserted in cuboid form horizontal bar 11, horizontal bar 11 fixed connection is on the third link, cuboid form axle bed 16 fixed connection is on fourth link 15, during gear rotation, second link and third link follow axial synchronous motion.
The invention is characterized in that the working corrugated pipe is used for compensating the displacement of the pipeline, the balance corrugated pipe is used for balancing the thrust in the compensator, the balance corrugated pipe can synchronously displace along with the pipeline when the pipeline expands with heat and contracts with cold, and only the length of the working corrugated pipe is changed in the compensation process, but the length of the balance corrugated pipe is not changed.
The axial compression sectional areas of the working corrugated pipes and the balance corrugated pipes are equal, the lengths of the balance corrugated pipes are not required to be equal to those of the working corrugated pipes, the lengths of the balance corrugated pipes can be reduced as much as possible, and only one working corrugated pipe is required, so that the production cost is reduced; meanwhile, the length of the compensator is reduced, and the compensator is convenient to transport and install.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged view of a portion C of fig. 1.
Fig. 3 is a view in the direction a of fig. 2.
The attached sign: 1-first connecting pipe, 2-first annular plate, 3-adjusting nut, 4-pull rod, 5-working corrugated pipe, 6-flow guiding pipe, 7-second annular plate, 8-outer corrugated pipe, 8' -inner corrugated pipe, 9-rack, 10-third annular plate, 11-horizontal bar, 12-gear, 13-rotating shaft, 14-flange, 15-fourth annular plate, 16-shaft seat, 17-pin shaft, 18-cam, 20-second connecting pipe, 21-belleville spring and 23-flat pin.
Description of the embodiments
The utility model provides a follow bellows compensator, it includes work bellows 5, the left and right sides of work bellows has welded respectively first takeover 1 and second takeover 20, the welding has first annular plate 2 on the first takeover, the welding has second annular plate 7 on the second takeover, the cover has third annular plate 10 on the second takeover, the left end symmetry of a plurality of pull rods 4 is inserted on first annular plate, pull rod quantity is 8 to 16, the pull rod is gone up to revolve has adjusting nut 3, adjusting nut is located the both sides of first annular plate and hugs closely with first annular plate, the right-hand member of pull rod stretches out in second annular plate and the third annular plate.
The balance corrugated pipe is welded between the second annular plate 7 and the third annular plate 10 in a sealing way and consists of an inner corrugated pipe 8 'and an outer corrugated pipe 8, the inner corrugated pipe 8' and the outer corrugated pipe 8 form a cavity with an annular section, the cavity is communicated with the second connecting pipe through the flow guide pipe 6, the axial compression sectional area of the balance corrugated pipe is equal to the axial compression sectional area of the working corrugated pipe, and thus the thrust generated by the fluid medium in the balance corrugated pipe and the working corrugated pipe is equal. The axial compression cross-sectional area of the balance bellows is related to the inner bellows 8 'and the outer bellows 8, and in the case where the diameter of the inner bellows 8' is unchanged, the diameter of the outer bellows 8 is increased, and the axial compression cross-sectional area of the balance bellows is also increased.
The right end of the pull rod is fixedly connected with a fourth annular plate 15, four to eight following devices are symmetrically arranged between the fourth annular plate and the third annular plate, each following device comprises a rack 9 fixedly connected to the second annular plate 7, the rack 9 penetrates through the third annular plate 10, the rack is meshed with a gear 12, the gear is connected to one end of a rotating shaft 13, the middle part of the rotating shaft is positioned in a cuboid-shaped shaft seat 16, the other end of the rotating shaft is connected with a cam 18, a disc spring 21 is arranged between the cam and the rotating shaft seat, a fastening nut 14 is screwed on the rotating shaft, the friction force between the cam and the rotating shaft seat can be regulated by regulating the fastening nut, the cam is attached to a roller 17, the roller is sleeved on a 19 pin roll, the pin roll is inserted into a cuboid-shaped transverse bar 11, the transverse bar 11 is fixedly connected to the third annular plate, the cuboid-shaped shaft seat 16 is fixedly connected to the fourth annular plate 15, and flat keys 23 are respectively arranged between the cam and the gear and the rotating shaft; the connecting line of the circle center of the pin shaft and the circle center of the rotating shaft is parallel to the axis of the second connecting pipe, the gear and the cam synchronously rotate when the rack translates, and the second annular plate and the third annular plate can synchronously move along the axial direction (the axis of the second connecting pipe) when the gear rotates by selecting the modulus and the tooth number of the gear and the curve of the cam;
the relationship of the radius of the cam along with the change of the rotation angle of the gear is as follows:
r=R+0.008727mzα；
In the above formula, R is the radius of the cam, namely the distance between the cam profile and the rotating shaft, R is the minimum radius of the cam profile, alpha is the rotation angle (in degrees) of the gear, m is the gear modulus, and z is the gear number.
The gear module m is selected to be 2 and the gear number z is selected to be 12.
When the gear rotation angle increment is delta alpha, the displacement increment delta L of the rack is equal to the cam profile radius increment delta r.
The difference between the minimum radius and the maximum radius of the cam profile is greater than the amount of bellows expansion.
The thrust balance principle is that the distance between the first ring plate and the fourth ring plate is fixed, the working corrugated pipe is connected with the balance corrugated pipe in series, the balance corrugated pipe is connected with the fourth ring plate through the following device, namely the balance corrugated pipe is connected with the fourth ring plate through the transverse bar, the pin shaft, the roller, the cam, the rotating shaft and the shaft seat, and the distance between the third ring plate and the fourth ring plate is not changed under the condition that the cam does not rotate; the pressure of fluid medium in the pipeline forms thrust in the working corrugated pipe and the working corrugated pipe, the thrust of the working corrugated pipe enables the roller to be clung to the cam, the thrust of the working corrugated pipe is applied to the cam through the roller 17, the thrust of the working corrugated pipe can be decomposed into a normal component force and a tangential component force on the cam, the tangential component force is far smaller than the thrust, the normal component force can not rotate the cam, the tangential component force can rotate the cam, the friction force generated by the disc spring can prevent the cam from rotating, when the friction force generated by the disc spring is larger than or equal to the tangential component force, the cam can not rotate, and the distance between the third annular plate and the fourth annular plate can not change; because the axial compression sectional areas of the working corrugated pipe and the balance corrugated pipe are equal, the thrust generated by the fluid medium on the working corrugated pipe and the balance corrugated pipe is equal in magnitude and opposite in direction, so that thrust compensation is realized, namely the compensator has no thrust output.
The tangential component force is related to the minimum radius R of the cam, when the thrust is a fixed value, the larger the minimum radius R is, the smaller the tangential component force is, the smaller the minimum radius R is larger than the radius of the working corrugated pipe, and the minimum radius R of the cam is 1.5 times of the radius of the working corrugated pipe.
The principle of compensation of heat expansion and cold contraction of the pipeline;
When the pipeline is contracted, external force is applied to the first connecting pipe and the second connecting pipe, the working corrugated pipe is stretched, the second annular plate fixedly connected with the working corrugated pipe moves right, the rack fixedly connected with the second annular plate drives the gear to rotate, the gear drives the cam to rotate clockwise through the rotating shaft, the roller moves towards the rotating shaft, the balance corrugated pipe moves right, namely the third annular plate moves right and moves right synchronously with the second annular plate, the length of the balance corrugated pipe cannot change, in the right moving process, the roller and the cam are always attached, and thus the thrust on the working corrugated pipe 5 and the balance corrugated pipe can still be offset.
When the pipeline is heated and expanded, the working corrugated pipe is compressed, the second annular plate fixedly connected with the working corrugated pipe moves leftwards, the rack on the second annular plate is fixedly connected with the gear to drive the gear to rotate anticlockwise, the gear drives the cam to rotate through the rotating shaft, the idler wheel moves back to the rotating shaft direction, the balance corrugated pipe moves leftwards, the third annular plate also moves rightwards and moves leftwards synchronously with the second annular plate, the length of the balance corrugated pipe cannot change, in the leftwards moving process, the idler wheel and the cam groove are always attached, and thus the thrust on the working corrugated pipe 5 and the balance corrugated pipe can still be offset.
Claims (2)
1. The following type corrugated pipe compensator comprises a working corrugated pipe (5), wherein a first connecting pipe (1) and a second connecting pipe (20) are welded at the left end and the right end of the working corrugated pipe respectively, a first annular plate (2) is welded on the first connecting pipe, a second annular plate (7) is welded on the second connecting pipe, a third annular plate (10) is sleeved on the second connecting pipe, the left ends of a plurality of pull rods (4) are symmetrically connected to the first annular plate, and the right ends of the pull rods extend out of the second annular plate and the third annular plate;
The device is characterized in that a balance corrugated pipe is welded between the second annular plate and the third annular plate in a sealing way, the balance corrugated pipe consists of an inner corrugated pipe (8 ') and an outer corrugated pipe (8), the inner corrugated pipe (8') and the outer corrugated pipe (8) form a cavity with an annular section, the cavity is communicated with the second connecting pipe through a flow guide pipe (6), and the axial compression sectional area of the balance corrugated pipe is equal to that of the working corrugated pipe (5);
The right-hand member fixedly connected with fourth link (15) of pull rod, be equipped with a plurality of follower between fourth link and the third link symmetrically, follower includes rack (9) of fixed connection on second link (7), the rack passes third link (10), rack and gear (12) meshing, gear connection is in the one end of pivot (13), the middle part of pivot is arranged in cuboid form axle bed (16), the other end of pivot is connected with cam (18), be equipped with belleville spring (21) between cam and the axle bed, the pivot has fastening nut (14) soon, fastening nut pastes with the cam, the cam pastes with gyro wheel (17) mutually, the gyro wheel cover is on round pin axle (19), the round pin axle is inserted in cuboid form diaphragm (11), diaphragm fixed connection is on the third link, axle bed 16 fixed connection is on fourth link (15), during gear rotation, second link and third link are along axial synchronous motion.
2. The following bellows compensator of claim 1, wherein the radius of the cam varies with the gear rotation angle in the relationship:
r=R+0.008727mzα；
Wherein R is the radius of the cam, namely the distance between the cam profile and the rotating shaft, R is the minimum radius of the cam, alpha is the rotation angle (unit is degree) of the gear, m is the gear modulus, and z is the gear number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322659859.0U CN220910796U (en) | 2023-10-04 | 2023-10-04 | Following corrugated pipe compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322659859.0U CN220910796U (en) | 2023-10-04 | 2023-10-04 | Following corrugated pipe compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220910796U true CN220910796U (en) | 2024-05-07 |
Family
ID=90916722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322659859.0U Active CN220910796U (en) | 2023-10-04 | 2023-10-04 | Following corrugated pipe compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220910796U (en) |
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2023
- 2023-10-04 CN CN202322659859.0U patent/CN220910796U/en active Active
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