An integrated stress acquisition device for pipeline water tightness testing
By installing hydraulic jacks and plugs between pipes, a pipeline water tightness test stress integration acquisition device has been developed, solving the problems of long testing time and environmental pollution associated with traditional socket-type ductile iron pipe pressure tests. This enables continuous pipeline pressure testing and the recycling of test water.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI LIUJIAN GRP CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-30
AI Technical Summary
The pressure test of traditional socket-type ductile iron pipes is time-consuming, and the pouring and removal of concrete backings can cause environmental pollution, affecting construction progress and costs.
The pipeline water tightness test stress acquisition device is adopted. By installing hydraulic jacks and plugs between adjacent pipelines, the pressure test inside the pipeline can be carried out continuously. The hydraulic jacks are used to pressurize and support the water injection in the pipeline, preventing the plugs from falling off and realizing the recycling of test water.
It shortens the pressure test time, reduces environmental pollution, lowers construction costs, and enables continuous pipeline pressure testing and the recycling of test water.
Smart Images
Figure CN224436006U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline installation technology, and in particular to an integrated stress acquisition device for pipeline water tightness testing. Background Technology
[0002] With the continuous advancement of science and technology and the sustained growth of the social economy, my country's water conservancy industry is also constantly developing and innovating. Socket-type ductile iron pipes, as water transmission pipelines, are increasingly being widely used in the water conservancy sector. Socket-type ductile iron pipes are characterized by high strength, good corrosion resistance, good seismic performance, convenient installation, environmental sustainability, and good economic efficiency. However, traditional pressure testing of socket-type ductile iron pipes requires pouring a concrete backing as support for the hydraulic jacks, ensuring a firm and tight connection between the hydraulic jacks and the pipe plug and the concrete backing. Water is then slowly injected into the pipe through the inlet installed on the plug. After the pipe is filled with water and soaked for 24 hours, the pressure test begins. During the initial pressure test phase, subsequent pipe installation must be halted until the initial pipe pressure test is passed, the concrete backing is removed, and the test water is drained before the subsequent pipe installation can proceed. Each section of pipeline takes about 5 days from the start of water injection to the pressure test passing. The installation of the subsequent pipeline also has to be stopped for 5 days to wait for the pressure test of the previous pipeline. This method is time-consuming, and the cost of pouring and removing the concrete backing is high. In addition, the pouring and removal of concrete will cause solid waste pollution, air pollution and surface water pollution to the surrounding environment. Utility Model Content
[0003] Therefore, the purpose of this utility model is to provide an integrated stress acquisition device for pipeline water tightness testing, so as to solve the problems pointed out in the background art.
[0004] To achieve the aforementioned objectives of this utility model, the technical solution adopted is as follows:
[0005] An integrated stress acquisition device for pipeline water tightness testing includes a first pressure testing unit installed between a front-end pipeline and a test pipeline, and a second pressure testing unit installed between the test pipeline and a subsequent pipeline. The first pressure testing unit includes a first flange installed at one end of the front-end pipeline, a first plug plate installed on the first flange, a second flange installed at one end of the test pipeline, and a second plug plate installed on the second flange. The second pressure testing unit includes a third flange installed at the other end of the test pipeline, a third plug plate installed on the third flange, a fourth flange installed at one end of the subsequent pipeline, and a fourth plug plate installed on the fourth flange. Multiple hydraulic jacks are provided between the first and second plug plates, and between the third and fourth plug plates. An air vent valve is installed on the second plug plate, and a drain pipe and an inlet pipe are installed on the third plug plate.
[0006] As a further improvement of this utility model, a drain valve is installed on the drain pipe.
[0007] As a further improvement of this utility model, a shut-off valve and a pressure gauge are installed on the water inlet pipe.
[0008] As a further improvement of this utility model, the exhaust valve is installed at the upper part of the second blocking plate.
[0009] The beneficial effects of this utility model are as follows: By adding a hydraulic jack between the plug plates installed on adjacent pipe sides, this utility model supports and counteracts the test pressure of water injection in the pipe, ensuring that the pipe plug plates will not fall off or fly out and cause injury due to the increase in test pressure. After the pressure test is passed, the first pressure test unit of the upstream pipe is not removed. The downstream pipe is installed to the point where pressure testing is required. After using the hydraulic jack to pressurize and support the plug plates on both sides, the test water in the upstream pipe is pumped into the downstream test pipe, and so on. This allows for the recycling of pressure test water and continuous pressure testing. Attached Figure Description
[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] In the diagram: 1. Front-end pipeline, 2. Test pipeline, 3. Subsequent pipeline, 4. First test unit, 5. Second test unit, 6. First flange plate, 7. First blocking plate, 8. Second flange plate, 9. Second blocking plate, 10. Third flange plate, 11. Third blocking plate, 12. Fourth flange plate, 13. Fourth blocking plate, 14. Hydraulic jack, 15. Air vent valve, 16. Drain pipe, 17. Inlet pipe, 18. Drain valve, 19. Shut-off valve, 20. Pressure gauge. Detailed Implementation
[0013] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0014] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0015] like Figure 1 As shown, a pipeline water tightness test stress integrated acquisition device includes a first test unit 4 installed between the upstream pipeline 1 and the test pipeline 2, and a second test unit 5 installed between the test pipeline 2 and the downstream pipeline 3. The first test unit 4 includes a first flange 6 installed at one end of the upstream pipeline 1, a first blocking plate 7 installed on the first flange 6, a second flange 8 installed at one end of the test pipeline 2, and a second blocking plate 9 installed on the second flange 8. The second test unit 5 includes a third flange 10 installed at the other end of the test pipeline 2, a third blocking plate 11 installed on the third flange 10, a fourth flange 12 installed at one end of the downstream pipeline 3, and a fourth blocking plate 13 installed on the fourth flange 12. Multiple hydraulic jacks 14 are provided between the first blocking plate 7 and the second blocking plate 9, and between the third blocking plate 11 and the fourth blocking plate 13. An exhaust valve 15 is installed on the second blocking plate 9, and a drain pipe 16 and an inlet pipe 17 are installed on the third blocking plate 11.
[0016] A drain valve 18 is installed on the drain pipe 16.
[0017] A shut-off valve 19 and a pressure gauge 20 are installed on the water inlet pipe 17.
[0018] The exhaust valve 15 is installed on the upper part of the second blocking plate 9.
[0019] When using this utility model: After the pressure test pipeline is installed, the backfill soil around the pipe body is 50cm higher than the top of the pipe, leaving the socket joint area → clean the pipeline → reserve the position for the hydraulic jack → continue installing the subsequent pipeline → make a special plug plate → seal the pipe ends with the plug plate → add a hydraulic jack for support between the plug plates on both sides → slowly inject water into the first section of the pipeline to soak the pipeline → simultaneously install the subsequent pipeline, with the backfill soil around the pipe body 50cm higher than the top of the pipe, leaving the socket joint area → after calculating that the weight of the subsequent pipeline is greater than the horizontal thrust of the test pressure of the first section of the pipeline, the first section of the pipeline begins to be pressurized → the subsequent pipeline continues to be installed without stopping, until the next valve well or no more than 1km away → after the pressure test of the first section of the pipeline is qualified, the hydraulic device is not removed, and the pressure test of the second section of the pipeline continues to be carried out according to the above steps, and so on, so that the pipeline pressure test can be carried out continuously → after the pressure test of the first section of the pipeline is completed, the test water is pumped into the next section of the pressure test pipeline, so that the test water can be recycled → the joint after the pressure test is completed is connected with a K-type sleeve.
[0020] Custom-made blocking plates are used in conjunction with jacks and are subject to inspection. They can be reused repeatedly, saving costs.
[0021] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, component disassembly or combination, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A pipeline hydrostatic testing stress integration acquisition device, characterized by: The system includes a first pressure testing unit installed between the upstream pipeline and the test pipeline, and a second pressure testing unit installed between the test pipeline and the downstream pipeline. The first pressure testing unit includes a first flange installed at one end of the upstream pipeline, a first plug plate installed on the first flange, a second flange installed at one end of the test pipeline, and a second plug plate installed on the second flange. The second pressure testing unit includes a third flange installed at the other end of the test pipeline, a third plug plate installed on the third flange, a fourth flange installed at one end of the downstream pipeline, and a fourth plug plate installed on the fourth flange. Multiple hydraulic jacks are provided between the first and second plug plates, and between the third and fourth plug plates. An air vent valve is installed on the second plug plate, and a drain pipe and an inlet pipe are installed on the third plug plate.
2. The stress integration acquisition device for a pipeline hydrostatic test according to claim 1, characterized in that: A drain valve is installed on the drain pipe.
3. The stress integration acquisition device for a pipeline hydrostatic test according to claim 1, characterized in that: The inlet pipe is equipped with a shut-off valve and a pressure gauge.
4. The integrated stress acquisition device for pipeline water tightness test according to claim 1, characterized in that: The exhaust valve is installed on the upper part of the second blocking plate.