Pipeline compensator
By adopting pullback devices and guide devices in the pipeline compensator, the structure is simplified and the operation difficulty is reduced, and the problems of low efficiency and high cost of crowbars in the prior art are solved, thus achieving more efficient compression and more stable Pipeline compensation effect.
Patent Information
- Application Number
- CN202420523458.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-18
AI Technical Summary
During maintenance, the existing pipeline compensator uses crowbars to operate inexpensively and easily damage the flange end face and sealing ring. The previously proposed synchronous transmission structure is complex and costly.
Design a pipe compensator including a telescopic section and a fixed flange, adopts a pull-back device and a guide device, reduces the height of the compensator through a pull-back member and a connecting ring, and defines the telescopic height through a guide sleeve and a guide shaft, simplifies the structure and Improve compression stability.
It realizes operation that facilitates replacement of compensator and seal, reduces operation difficulty and cost, and improves the stability and labor-saving of the compression process.
Smart Images
Figure CN222164019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydropower station installation, in particular to a pipeline compensator. Background Art
[0002] Generators, transformers, GIS, GIL, IPB and other equipment are equipped with a large number of pipe compensators of different models and specifications. Pipe compensators are elastic. When maintaining these compensators, they need to be pried with tools such as crowbars. The crowbar pries between the flange of the pipe compensator and the flange of the main pipeline, compresses the pipe compensator, and separates the flange of the pipe compensator from the flange of the main pipeline, so as to replace the compensator or replace the compensator seal. Using a crowbar for operation is not efficient and is prone to damage the flange end face and sealing ring.
[0003] In order to solve this problem, the inventor retrieved Chinese patent document CN 216413850 U, announcement date: 2022.04.29, which discloses a bellows expansion joint for a pipeline busbar. Any two adjacent nut structures on the circumference of the bellows body are connected by a synchronous transmission structure to achieve synchronous rotation of all nut structures. When each nut structure rotates forward synchronously, each nut structure moves to the right synchronously to compress the bellows body synchronously; when each nut structure rotates reversely synchronously, each nut structure moves to the left to release the bellows body synchronously. Although this solution can compress the bellows body, its structure is relatively complex, with more added parts and higher cost of use. For this reason, the inventor designed a pipeline compensator with a simpler structure. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a pipeline compensator which has a simple structure and can be easily compressed.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a pipeline compensator, including a compensator body, the compensator body includes a telescopic section and flanges respectively fixed to the two ends of the telescopic section, at least two pull-back devices are installed between the two flanges, the pull-back device includes a connecting ring and a pull-back member, the two connecting rings are respectively connected to the opposite sides of the two flanges, the pull-back members are respectively connected to the two connecting rings, and rotating the pull-back member can pull back the flange, thereby reducing the height of the compensator body.
[0006] The pull-back device also includes a connecting seat, wherein the two connecting seats are respectively fixedly connected to the opposite sides of the two flanges, and the two connecting rings are respectively connected to the two connecting seats.
[0007] The pullback member is crescent-shaped, with an arc-shaped hole on it, a connecting hole at one end of the pullback member, a first driving hole in the middle of the pullback member, one connecting ring connected to the connecting hole of the pullback member, and another connecting ring connected to the arc-shaped hole of the pullback member.
[0008] The pull-back member is circular or elliptical, and is provided with a first long hole and a second long hole. The upper end of the first long hole and the lower end of the second long hole share a longitudinal axis, the lower end of the first long hole and the upper end of the second long hole share a transverse axis, and the distance between the upper end of the first long hole and the lower end of the second long hole is greater than the distance between the lower end of the first long hole and the upper end of the second long hole; a second driving hole is provided on the pull-back member between the first long hole and the second long hole.
[0009] At least two guide devices are installed between the two flanges.
[0010] The guide device comprises a guide sleeve and a guide shaft, one end of the guide sleeve is fixedly connected to one of the flanges, one end of the guide shaft is fixedly connected to the other flange, and the other end of the guide shaft is slidably inserted into the other end of the guide sleeve.
[0011] One end of the guide shaft inserted into the guide sleeve is axially provided with a plurality of limiting holes, and a third long hole is axially provided on the guide shaft. The latch pin penetrates the third long hole and the limiting hole, thereby limiting the telescopic height of the compensator body.
[0012] The utility model has the following beneficial effects:
[0013] 1. The utility model rotates the pull-back member to bring the connecting rings on both sides closer and pulls back the flanges on both sides, thereby lowering the height of the compensator body, separating the flange of the compensator body from the flange of the main pipeline, thereby facilitating the replacement of the compensator or the replacement of the compensator seal.
[0014] 2. The utility model installs at least two guide devices between the two flanges of the compensator body, which can ensure the stability of the compensator body when it is compressed. In addition, after the pipeline compensator is installed, the position between the guide sleeve and the guide shaft is adjusted by the pin to limit the telescopic height of the compensator body. In this way, when compressing the pipeline compensator, it is not necessary to rotate the pull-back piece in the full stroke, and the operation is more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0016] Figure 1 It is a schematic diagram of the main structure of the utility model.
[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.
[0018] Figure 3This is a schematic diagram of the first use state of the pullback device of the utility model.
[0019] Figure 4 for Figure 3 Schematic diagram of the second usage state of the pull-back device.
[0020] Figure 5 It is an exploded view of the pullback device of the utility model.
[0021] Figure 6 It is a schematic diagram of the structure of another pullback member.
[0022] Figure 7 for Figure 6 Schematic diagram of the state after the middle pull-back member is rotated 90°.
[0023] Figure 8 It is a structural schematic diagram of the guide device of the utility model.
[0024] Fig. 9 It is an exploded view of the guide device of the utility model.
[0025] In the figure: compensator body 1, telescopic section 11, flange 12,
[0026] Pulling device 2, connecting seat 21, connecting ring 22, pulling member 23, arc hole 231, connecting hole 232, first driving hole 233, first long hole 234, second long hole 235, second driving hole 236;
[0027] The guide device 3 , the guide sleeve 31 , the third long hole 311 , the guide shaft 32 , the limiting hole 321 , and the latch pin 33 . DETAILED DESCRIPTION
[0028] like Figure 1-9 As shown, a pipeline compensator includes a compensator body 1, the compensator body 1 includes a telescopic section 11 and flanges 12 respectively fixed at both ends of the telescopic section 11, at least two pull-back devices 2 are installed between the two flanges 12, the pull-back device 2 includes a connecting ring 22 and a pull-back member 23, the two connecting rings 22 are respectively connected to the opposite sides of the two flanges 12, the pull-back member 23 is respectively connected to the two connecting rings 22, and the pull-back member 23 can be rotated to pull back the flange 12, thereby reducing the height of the compensator body 1. The pull-back member 23 is rotated by a tool to make the connecting rings 22 on both sides close to each other, and the flanges 12 on both sides are pulled back, thereby reducing the height of the compensator body 1. The flange 12 of the compensator body 1 is separated from the flange of the main pipeline, so as to facilitate the replacement of the compensator or the replacement of the compensator seal. In this embodiment, the connecting ring 22 can be welded to the flange.
[0029] For further information, see Figure 1 , 3-5, the pull-back device 2 also includes a connecting seat 21, and the two connecting seats 21 are respectively fixedly connected to the opposite sides of the two flanges 12, and the two connecting rings 22 are respectively connected to the two connecting seats 21. By providing the connecting seat 21, it is convenient to connect and install the connecting ring 22. Specifically, the connecting ring 22 can be welded to the connecting seat 21, or a through hole can be provided on the connecting seat 21, and the connecting ring 22 is rotatably connected to the connecting ring 22.
[0030] See also Figure 2-5 , is a first embodiment of the pullback member 23. In this embodiment, the pullback member 23 is crescent-shaped, and an arc-shaped hole 231 is provided on the pullback member 23. A connecting hole 232 is provided at one end of the pullback member 23, and a first driving hole 233 is provided in the middle of the pullback member 23. One connecting ring 22 is connected to the connecting hole 232 of the pullback member 23, and the other connecting ring 22 is connected to the arc-shaped hole 231 of the pullback member 23. When in use, insert one end of the L-shaped flat tool into the first driving hole 233, rotate the pullback member 23, and pull the pullback member 23 from Figure 3 The state in turns to Figure 4 In the state of the pipeline expansion joint, the compression of the pipeline expansion joint is realized. During operation, all the pull-back devices 2 as far as possible are operated simultaneously.
[0031] See also Figure 6 , 7 , which is a second embodiment of the pull-back member 23. The pull-back member 23 is circular or elliptical, and is provided with a first long hole 234 and a second long hole 235. The upper end of the first long hole 234 and the lower end of the second long hole 235 share a longitudinal axis, the lower end of the first long hole 234 and the upper end of the second long hole 235 share a transverse axis, and the distance between the upper end of the first long hole 234 and the lower end of the second long hole 235 is greater than the distance between the lower end of the first long hole 234 and the upper end of the second long hole 235; the pull-back member 23 is provided with a second drive hole 236 between the first long hole 234 and the second long hole 235. When in use, one of the connecting rings 22 is connected to the first long hole 234, and the other connecting ring 22 is connected to the second long hole 235. One end of the L-shaped flat-mouth tool is inserted into the second drive hole 236, and the pull-back member 23 is rotated to pull the pull-back member 23 from Figure 6 The state in turns to Figure 7 Similarly, during operation, all the pull-back devices 2 are operated simultaneously as much as possible.
[0032] For further information, see Figure 1 , 2 In order to ensure the stability of the compensator body when it is compressed, at least two guide devices 3 are installed between the two flanges 12.
[0033] See also Figure 1 , 28. The guide device 3 includes a guide sleeve 31 and a guide shaft 32. One end of the guide sleeve 31 is fixedly connected to one of the flanges 12, and one end of the guide shaft 32 is fixedly connected to the other flange 12. The other end of the guide shaft 32 is slidably inserted into the other end of the guide sleeve 31. The axial extension and contraction of the upper and lower flanges are achieved through the cooperation of the guide sleeve 31 and the guide shaft 32.
[0034] For further information, see Fig. 9 A plurality of limiting holes 321 are axially arranged at one end of the guide shaft 32 inserted into the guide sleeve 31, a third long hole 311 is axially arranged on the guide shaft 32, and the latch 33 penetrates the third long hole 311 and the limiting hole 321, thereby limiting the telescopic height of the compensator body 1.
[0035] After the pipeline compensator is installed, the position between the guide sleeve 31 and the guide shaft 32 is adjusted by the pin 33 to limit the telescopic height of the compensator body 1. In this way, when compressing the pipeline compensator, there is no need to rotate the pull-back member 23 throughout the entire stroke, and the operation is more labor-saving.
[0036] The action process or principle of the utility model is as follows:
[0037] See also Figure 2 When the pipeline compensator needs to be compressed, the pull-back member 23 is rotated by a tool to pull back the flanges 12 on both sides, thereby reducing the height of the compensator body 1. At this time, the flange 12 of the compensator body 1 is separated from the flange of the main pipeline, so that it is convenient to replace the compensator or replace the compensator seal.
Claims
1. A pipeline compensator, comprising a compensator body (1), wherein the compensator body (1) comprises a telescopic section (11) and flanges (12) respectively fixed to two ends of the telescopic section (11), characterized in that: At least two pull-back devices (2) are installed between the two flanges (12), and the pull-back devices (2) include a connecting ring (22) and a pull-back member (23). The two connecting rings (22) are respectively connected to opposite sides of the two flanges (12), and the pull-back member (23) is respectively connected to the two connecting rings (22). Rotating the pull-back member (23) can pull back the flange (12), thereby reducing the height of the compensator body (1).
2. A pipeline compensator according to claim 1, characterized in that: The pull-back device (2) further comprises a connecting seat (21), wherein the two connecting seats (21) are respectively fixedly connected to opposite sides of the two flanges (12), and the two connecting rings (22) are respectively connected to the two connecting seats (21).
3. A pipeline compensator according to claim 1, characterized in that: The pullback member (23) is crescent-shaped, and is provided with an arc-shaped hole (231). A connecting hole (232) is provided at one end of the pullback member (23), and a first driving hole (233) is provided in the middle of the pullback member (23), wherein one connecting ring (22) is connected to the connecting hole (232) of the pullback member (23), and the other connecting ring (22) is connected to the arc-shaped hole (231) of the pullback member (23).
4. A pipeline compensator according to claim 1, characterized in that: The pull-back member (23) is circular or elliptical, and is provided with a first long hole (234) and a second long hole (235); the upper end of the first long hole (234) and the lower end of the second long hole (235) share a longitudinal axis, the lower end of the first long hole (234) and the upper end of the second long hole (235) share a transverse axis, and the distance between the upper end of the first long hole (234) and the lower end of the second long hole (235) is greater than the distance between the lower end of the first long hole (234) and the upper end of the second long hole (235); and a second driving hole (236) is provided on the pull-back member (23) between the first long hole (234) and the second long hole (235).
5. A pipeline compensator according to claim 1, characterized in that: At least two guide devices (3) are installed between the two flanges (12).
6. A pipeline compensator according to claim 5, characterized in that: The guide device (3) comprises a guide sleeve (31) and a guide shaft (32); one end of the guide sleeve (31) is fixedly connected to one of the flanges (12); one end of the guide shaft (32) is fixedly connected to the other flange (12); and the other end of the guide shaft (32) is slidably inserted into the other end of the guide sleeve (31).
7. A pipeline compensator according to claim 6, characterized in that: One end of the guide shaft (32) inserted into the guide sleeve (31) is axially provided with a plurality of limiting holes (321), and the guide shaft (32) is axially provided with a third long hole (311), and the latch (33) penetrates the third long hole (311) and the limiting hole (321), thereby limiting the telescopic height of the compensator body (1).