Pipeline interface sealing performance testing device
By designing a device for testing the sealing performance of pipeline interfaces, using an annular structure and a compression screw group, the problem of waste of water resources during pipeline pressure testing in the prior art is solved, and effective testing of the sealing performance of pipeline interfaces of multiple signals is achieved.
Patent Information
- Application Number
- CN202421638255.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The prior art has the problem of waste of water resources during pipeline pressure testing, especially in areas where water resources are scarce or construction land is large, and it is difficult to effectively test the interface sealing performance of multiple signal pipelines.
A pipeline interface sealing performance testing device is designed, using a ring-shaped structure supporting ring and multiple sets of compression screw groups, and a sealing ring and sealing block are formed through the compression block and sealing member, and a sealing structure is formed with the inner wall of the pipeline to reduce the amount of water used for the test.
It realizes reliable testing of the sealing performance of pipeline interfaces, reduces waste of water resources, is suitable for pressure testing operations of multiple signal pipelines, and has a simple and easy structure.
Smart Images
Figure CN222938693U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of engineering construction pipelines, and more specifically, it relates to a pipeline interface sealing performance testing device. Background Art
[0002] The construction methods of a large number of pipelines such as ductile iron pipes are to excavate trenches, install pipelines and backfill the trenches. After the pipeline installation is completed, a hydrostatic test needs to be carried out in accordance with relevant regulations. After the hydrostatic test is qualified, the pipeline can be put into operation. The existing 3 - 4 km pressure testing section is applicable to areas with rich water resources, convenient water intake and drainage. However, for some working conditions, it is more difficult to carry out pipeline pressure testing by this method. For example: in arid areas, water resources are scarce and it is not convenient to take water; in crowded urban areas, although it is easy to take water, pressure testing every 1 km will affect the construction land occupation and project progress; for super-large diameter pipelines, the amount of water required for a 3 - 4 km pressure testing section is large, and the large-scale water intake before the pressure test and the unreasonable drainage after the test will cause waste of water resources.
[0003] There is a technology with the name of "Prestressed pipeline interface sealing test device and sealing test method" and the publication number of "114235309A" in the prior art. This technology discloses a prestressed pipeline interface sealing test device and a sealing test method. The prestressed pipeline interface sealing test device includes a pipe structure, a sealing structure, a plugging structure and a filling structure. The pipe structure has two opposite first pipe orifices and second pipe orifices, and includes at least two connected and communicated connecting pipes. An annular gap is formed between the two connecting pipes, and the annular gap has an outer annular opening communicating to the outside; the sealing structure includes a sealing filler filled in the annular gap, and a sealing sleeve sleeved on the pipe structure and covering at least the outer annular opening; the plugging structure is hermetically plugged at the first pipe orifice; the filling structure includes a filling pipe hermetically installed at the second pipe orifice. The prestressed pipeline interface sealing test device provided by the present invention can perform sealing detection on prestressed pipelines, facilitate judging whether the prestressed pipeline interface is reliably sealed, reduce the risk of inability to apply prestress in the later stage, and ensure the normal progress of post-tensioned prestress. This technology does not involve the technical problems and technical solutions of the present application. Summary of the Utility Model
[0004] The technical problem to be solved by the present utility model is: aiming at the deficiencies of the prior art, to provide a pipeline interface sealing performance testing device with a simple structure, which can conveniently and reliably realize the sealing test of the interface part after adjacent pipelines are inserted, effectively reduce the water consumption for testing, reduce the waste of water resources during the pipeline pressure test, and can be used for the pressure test operations of various signal pipelines.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present utility model is:
[0006] The utility model relates to a device for testing the sealing performance of a pipeline interface. A plurality of groups of pressing screw rod groups are screwed along the circumference of a support ring at intervals. Each group of pressing screw rod groups includes two pressing screw rods. A pressing nut is screwed at the position outside the support ring for each pressing screw rod. Each group of pressing screw rod groups is connected to a pressing block. Two sealing members are arranged on the outer surface of each pressing block. A water inlet is communicated with one of the pressing blocks.
[0007] The pressing block is of an arc structure, and the sealing member is of an arc structure.
[0008] The pipeline includes a first pipeline and a second pipeline. The first pipeline includes a pipeline socket, and the second pipeline includes a pipeline spigot.
[0009] When the first pipeline and the second pipeline are inserted and connected, a pipeline sealing rubber ring is arranged between the pipeline socket of the first pipeline and the pipeline spigot of the second pipeline.
[0010] The device for testing the sealing performance of the pipeline interface is configured to be a structure that can be arranged at the inner ring position of the joint of the first pipeline and the second pipeline.
[0011] When the device for testing the sealing performance of the pipeline interface is arranged at the inner ring position of the joint of the first pipeline and the second pipeline, the pressing blocks connected to each group of pressing screw rod groups are configured to be able to respectively fit on the corresponding inner ring positions of the joint of the first pipeline and the second pipeline. One sealing member fits on the edge part of the first pipeline, and the other sealing member fits on the edge of the second pipeline.
[0012] When the device for testing the sealing performance of the pipeline interface is arranged at the inner ring position of the joint of the first pipeline and the second pipeline, multiple sealing members fitting on the edge part of the first pipeline form a first sealing ring, multiple sealing members fitting on the edge position of the second pipeline form a second sealing ring, and multiple pressing blocks form a sealing block.
[0013] A moving wheel support member is connected to the inner ring of the support ring. Telescopic cylinders are respectively arranged at each end of the moving wheel support member, and the telescopic cylinders are connected to the moving wheels.
[0014] The support ring is an I-beam.
[0015] Adopting the technical solution of the utility model, the working principle and beneficial effects are as follows:
[0016] The pipeline interface sealing performance testing device described in the utility model is provided with a support ring in a ring structure. Along the circumference of the support ring, multiple groups of pressing screw sets are screwed on at intervals. Each group of pressing screw sets includes two pressing screws. A pressing nut is screwed on each pressing screw at a position outside the support ring. Each group of pressing screw sets is connected to a pressing block. Two seals are arranged on the outer surface of each pressing block. A water inlet is communicated on one pressing block. The pressing screw can rotate relative to the support ring. When the pressing screw rotates, it drives the pressing block to rotate, so that the pressing block contacts the inner ring of the pipeline. After all the pressing blocks are attached to the inner ring of the pipeline, the two sealing rings formed by the two seals and the sealing block formed by multiple pressing blocks cooperate with the inner wall of the inserted pipeline to form a sealing structure. Then, water with pressure is supplied through the water inlet, and the test can be carried out on whether the sealing performance of the interface part is good. Before the performance test, the pressing screws are first installed on the support ring in sequence, and then a pressing nut is equipped on each pressing screw. An arc-shaped pressing block is installed at the outer end part of the pressing screw, with the arc surface protruding outward. When multiple pressing screws are tightened so that the pressing blocks abut against the inner ring of the pipe fitting, the ring formed by the pressing blocks is basically the same as the inner circle of the inner ring of the pipeline, and the arc surface of the pressing block can basically fit with it. Two annular sealing rings are formed by the two seals on the pressing block. The rubber sealing ring is installed inside the groove of the pressing block. In this way, the sealing block formed by the pressing block, the two sealing rings formed by the two seals, and the pipe socket and pipe spigot of the adjacent pipelines form a cavity, and this cavity is communicated with the water inlet. Water is injected through the water inlet. When the water pressure reaches the specified pressure value, the sealing condition of the interface is judged by the water pressure value. If the water pressure value drops rapidly, it indicates that the sealing does not meet the requirements. If the water pressure value remains unchanged for a certain period of time, it indicates that the sealing meets the requirements. Brief Description of the Drawings
[0017] The following briefly describes the content expressed in each drawing of this specification and the marks in the drawings:
[0018] Figure 1 It is a schematic structural diagram of the pipeline interface sealing performance testing device described in the utility model;
[0019] Figure 2 It is a partial sectional structural diagram of the pipeline interface sealing performance testing device described in the utility model;
[0020] The marks in the drawings are respectively: 1. Pressing block; 2. Pressing screw; 3. Pressing nut; 4. Support ring; 5. Seal; 6. Moving wheel support; 7. Moving wheel; 8. Pipe socket; 9. Pipe sealing rubber ring; 10. Pipe spigot; 11. Water inlet; 12. First pipeline; 13. Second pipeline; 14. Telescopic cylinder. Detailed Embodiment
[0021] The following will, with reference to the accompanying drawings, further elaborate in detail on the specific implementation manners of the present utility model, such as the shapes, structures of the various components involved, the mutual positions and connection relationships between the various parts, the functions of the various parts, and the working principles, etc., through the description of the embodiments:
[0022] As shown in the attached Figure 1 and attached Figure 2 figures, the present utility model is a device for testing the sealing performance of a pipe interface. A plurality of groups of pressing screw rod groups are screwed along the circumference of the support ring 4 at intervals. Each group of pressing screw rod groups includes two pressing screw rods 2. A pressing nut 3 is screwed at the outer position of the support ring 4 for each pressing screw rod 2. Each group of pressing screw rod groups is connected to a pressing block 1. Two sealing members 5 are arranged on the outer surface of each pressing block 1. A water inlet 11 is communicated with one of the pressing blocks 1. For the deficiencies in the prior art, the above structure proposes an improved technical solution. When setting up the structure, a support ring with an annular structure is provided. A plurality of groups of pressing screw rod groups are screwed along the circumference of the support ring 4 at intervals. Each group of pressing screw rod groups includes two pressing screw rods 2. A pressing nut 3 is screwed at the outer position of the support ring 4 for each pressing screw rod 2. Each group of pressing screw rod groups is connected to a pressing block 1. Two sealing members 5 are arranged on the outer surface of each pressing block 1. A water inlet 11 is communicated with one of the pressing blocks 1. The pressing screw rod 2 can rotate relative to the support ring 4. When the pressing screw rod 2 rotates, it drives the pressing block 1 to rotate, so as to realize the pressing block 1 contacting the inner circle of the pipe. After all the pressing blocks 1 are attached to the inner circle of the pipe, the two sealing rings formed by the two sealing members 5 and the sealing blocks formed by the multiple pressing blocks 1, together with the inner wall of the inserted pipe, form a sealing structure. Then, by supplying pressurized water through the water inlet, the test of whether the sealing performance of the interface part is good can be carried out. Before performing the performance test, first install the pressing screw rods onto the support ring in sequence, then equip a pressing nut on each pressing screw rod, and install an arc-shaped pressing block at the outer end part of the pressing screw rod, with the arc surface protruding outward. When multiple pressing screw rods are tightened so that the pressing blocks abut against the inner circle of the pipe fitting, the ring formed by the pressing blocks 1 is basically the same as the inner circle of the inner circle of the pipe, and the arc surface of the pressing block 1 can basically fit with it. Two annular sealing rings are formed by the two sealing members on the pressing block. The rubber sealing ring 5 is installed inside the groove of the pressing block 1. In this way, the sealing block formed by the pressing block, the two sealing rings formed by the two sealing members, and the pipe socket and pipe spigot of the adjacent pipes form a cavity, and this cavity is communicated with the water inlet. Water is injected through the water inlet. When the water pressure reaches the specified pressure value, the sealing condition of the interface is judged by the water pressure value. If the water pressure value drops rapidly, it indicates that the sealing does not meet the requirements. If the water pressure value remains unchanged for a certain period of time, it indicates that the sealing meets the requirements. The device for testing the sealing performance of the pipe interface described in the present utility model has a simple structure, can conveniently and reliably realize the sealing test of the interface part after adjacent pipes are inserted, effectively reduces the water consumption for testing, reduces the waste of water resources during the pipe pressure test, and can be used for the pressure test operations of various signal pipes.
[0023] The pressing block 1 is of an arc structure, and the seal 5 is of an arc structure. With the above structure, after multiple pressing blocks respectively fit the inner rings of corresponding pipes, the two seals 5 form two sealing rings, and multiple pressing blocks 1 form a sealing block, which cooperates with the inner wall of the inserted pipe to form a sealed cavity structure.
[0024] The pipe includes a first pipe 12 and a second pipe 13. The first pipe 12 includes a pipe socket 8, and the second pipe 13 includes a pipe spigot 10. When the first pipe 12 and the second pipe 13 are connected by insertion, a pipe sealing rubber ring 9 is arranged between the pipe socket 8 of the first pipe 12 and the pipe spigot 10 of the second pipe 13. With the above structure, the first pipe 12 and the second pipe 13 are adjacent inserted pipes. During insertion, the pipe socket 8 of the first pipe 12 and the pipe spigot 10 of the second pipe 13 are connected by insertion, and the pipe sealing rubber ring 9 is arranged between the pipe socket 8 and the pipe spigot 10 to achieve sealing. To test whether the pipe sealing performance meets the requirements is to test whether the structure formed by the pipe socket 8, the pipe spigot 10 and the pipe sealing rubber ring 9 is sealed. With the structure of the present utility model, it is not necessary to introduce a large amount of water into the pipe, but only to introduce water into the sealed cavity structure formed by the two seals 5, the sealing block and the inner wall of the pipe, and then the test can be carried out. In this way, not only the test steps are simple, but also water resources are effectively saved.
[0025] The pipe joint sealing performance testing device is arranged to be able to be arranged at the inner ring position of the joint of the first pipe 12 and the second pipe 13. With the above structure, when performance testing is required, the testing device is arranged at the joint of two adjacent pipes, and then the pressing screw needs to be tightened and the pressing nut needs to be tightened to make the pressing block fit the inner ring of the pipe to form a test cavity.
[0026] When the pipe joint sealing performance testing device is arranged at the inner ring position of the joint of the first pipe 12 and the second pipe 13, the pressing blocks 1 connected by each pressing screw group are arranged to be able to respectively fit the corresponding inner ring positions at the joint of the first pipe 12 and the second pipe 13, one seal 5 fits the edge part of the first pipe 12, and the other seal 5 fits the edge of the second pipe 13. With the above structure, after the testing device is arranged in place, the two sealing rings, the sealing block and the adjacent two pipes form a cavity structure, and the joints of the two pipes communicate with the cavity structure. In this way, as long as water is injected into the cavity structure, the sealing of the pipe joint can be tested.
[0027] When the pipeline interface sealing performance testing device is arranged at the inner ring position of the joint of the first pipeline 12 and the second pipeline 13, multiple seals 5 that fit the edge part of the first pipeline 12 form a first sealing ring, and multiple seals 5 that fit the edge position of the second pipeline 13 form a second sealing ring. Multiple pressing blocks 1 form a sealing block. In the above structure, the two sealing rings formed by the two seals are parallel, one fitting the inner ring of one pipeline, forming a sealed cavity structure.
[0028] The inner ring of the support ring 4 is connected to the moving wheel support 6. Telescopic cylinders 14 are respectively arranged at each end of the moving wheel support 6, and the telescopic cylinders 14 are connected to the moving wheels 7. The support ring 4 is an I-beam. In the above structure, when the device needs to be used, the telescopic cylinders are extended. At this time, the moving wheels abut against the inner wall of the pipeline, while the support ring does not approach the inner wall of the pipeline. Then, the device is pushed, and the device moves along the pipeline through the moving wheels to the interface position of two adjacent pipelines. Then, the telescopic cylinders are controlled to contract, so that the support ring approaches the inner ring of the pipeline, and the moving wheels leave the inner ring of the pipeline. Then, the pressing screw and the pressing nut are adjusted to make the pressing block reliably fit the pipeline, which is convenient for testing.
[0029] The pipeline interface sealing performance testing device described in the utility model has a structure in which a support ring of an annular structure is provided, and a plurality of compression screw groups are screwed with gaps along a circle of the support ring 4, each compression screw group includes two compression screws 2, each compression screw 2 is located outside the support ring 4 and is screwed with a compression nut 3, each compression screw group is connected to a compression block 1, and two sealing members 5 are provided on the outer surface of each compression block 1, one of the compression blocks 1 is connected to a water inlet 11, and the compression screw 2 can rotate relative to the support ring 4. When the compression screw 2 rotates, the compression block 1 is driven to rotate, so that the compression block 1 contacts the inner ring of the pipeline, and after all the compression blocks 1 are in contact with the inner ring of the pipeline, the two sealing rings formed by the two sealing members 5 and the sealing block formed by the plurality of compression blocks 1 cooperate with the inner wall of the plugged pipeline to form a sealing structure, and then pressurized water is supplied through the water inlet to test whether the sealing performance of the interface is good. Before the performance test, the compression screws are installed on the support ring in sequence, and then a compression nut is equipped on each compression screw. A compression block with an arc structure is installed at the outer end of the compression screw, and the arc surface protrudes outward. When multiple compression screws are tightened so that the compression block is against the inner ring of the pipe fitting, the ring formed by the compression block 1 is basically consistent with the inner circle of the inner ring of the pipe, and the arc surface of the compression block 1 can basically fit it, and the two sealing members on the compression block form two annular sealing rings. The rubber sealing ring 5 is installed inside the groove of the compression block 1. In this way, the sealing block formed by the compression block, the two sealing rings formed by the two sealing members, and the pipe socket and pipe spigot of the adjacent pipe form a cavity, which is connected to the water inlet. Water is injected through the water inlet. When the water pressure reaches the specified pressure value, the sealing condition of the interface is judged by the water pressure value. If the water pressure value decreases rapidly, it means that the sealing does not meet the requirements. If the water pressure value remains unchanged for a certain period of time, it means that the sealing meets the requirements.
[0030] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
Claims
1. A pipeline interface sealing performance testing device, characterized in that: A plurality of compression screw rod groups are screwed together at intervals along a circle of the support ring (4), each compression screw rod group comprises two compression screw rods (2), each compression screw rod (2) is located outside the support ring (4) and is screwed together with a compression nut (3), each compression screw rod group is connected to a compression block (1), and two sealing members (5) are arranged on the outer surface of each compression block (1), and one of the compression blocks (1) is connected to a water inlet (11).
2. The pipeline interface sealing performance testing device according to claim 1, characterized in that: The pressing block (1) is an arc-shaped structure, and the sealing element (5) is an arc-shaped structure.
3. The pipeline interface sealing performance testing device according to claim 1 or 2, characterized in that: The pipeline comprises a first pipeline (12) and a second pipeline (13), the first pipeline (12) comprises a pipeline socket (8), and the second pipeline (13) comprises a pipeline spigot (10).
4. The pipeline interface sealing performance testing device according to claim 3 is characterized in that: When the first pipeline (12) and the second pipeline (13) are plugged together, a pipeline sealing rubber ring (9) is arranged between the pipeline socket (8) of the first pipeline (12) and the pipeline plug (10) of the second pipeline (13).
5. The pipeline interface sealing performance testing device according to claim 4, characterized in that: The pipeline interface sealing performance testing device is configured as a structure that can be arranged at the inner circle position of the joint of the first pipeline (12) and the second pipeline (13).
6. The pipeline interface sealing performance testing device according to claim 5, characterized in that: When the pipeline interface sealing performance testing device is arranged at the inner circle position of the joint of the first pipeline (12) and the second pipeline (13), the pressing block (1) connected to each group of compression screw groups is arranged to be able to fit respectively to the inner circle position corresponding to the joint of the first pipeline (12) and the second pipeline (13), one sealing member (5) fits to the edge of the first pipeline (12), and the other sealing member (5) fits to the edge of the second pipeline (13).
7. The pipeline interface sealing performance testing device according to claim 6, characterized in that: When the pipeline interface sealing performance testing device is arranged at the inner circle position of the joint of the first pipeline (12) and the second pipeline (13), the multiple sealing members (5) abutting the edge of the first pipeline (12) form a first sealing ring, the multiple sealing members (5) abutting the edge of the second pipeline (13) form a second sealing ring, and the multiple pressing blocks (1) form a sealing block.
8. The pipeline interface sealing performance testing device according to claim 1 or 2, characterized in that: The inner ring of the support ring (4) is connected to the moving wheel support (6), and a telescopic cylinder (14) is provided at each end of the moving wheel support (6), and the telescopic cylinder (14) is connected to the moving wheel (7).
9. The pipeline interface sealing performance testing device according to claim 1 or 2, characterized in that: The support ring (4) is an I-beam.