Underground collapse pipeline stress simulation test device
By designing a underground landslide pipeline stress simulation test device including frame, lift, force sensor and foam, the cumbersome testing problems in the prior art are solved, and the rapid and accurate simulation of the stress condition of the pipeline during landslide is achieved. Determine whether the pipeline is damaged.
Patent Information
- Application Number
- CN202420859832.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-24
AI Technical Summary
The lack of effective underground pipeline collapse stress testing methods in the prior art, which makes on-site evaluation cumbersome and time-consuming, and requires excavation judgment of the collapsed area.
A test device for stress simulation of underground landslide pipelines is designed, including frames, elevators, force sensors, arc plates, strain gauges and foams. By simulating the combination of floating soil and hollows, the multi-directional stress of the pipelines during landslide is simulated. , accurately test the force that the pipeline bears.
It realizes rapid and convenient simulation and testing of the stress status of the pipeline during a landslide, determines whether the pipeline is damaged, and avoids the cumbersome process of on-site excavation.
Smart Images
Figure CN222353680U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline stress simulation testing, in particular to an underground collapse pipeline stress simulation testing device. Background Art
[0002] The West-East Gas Transmission Project mainly transports natural gas through pipelines, which span across multiple provinces in China and thousands of kilometers. Through the high-pressure pipeline system, natural gas can be transported from gas fields in the western region to cities and industrial areas in the east. In the West-East Gas Transmission Project, most of the pipelines are buried underground to ensure their safe and stable operation and reduce the impact on the environment and traffic. These buried pipelines are at risk of damage caused by landslides. Therefore, in the process of maintaining the West-East Gas Transmission pipeline, it is usually necessary to simulate and predict the pressure that the pipeline will withstand during landslides, so as to provide support and basis for the subsequent selection of pipelines with appropriate strength.
[0003] At present, there is a lack of effective landslide stress testing methods for underground transmission pipelines. Usually, construction personnel conduct on-site assessments to predict the strength of the landslide. At the same time, in order to determine whether the underground pipeline is damaged after the collapse, it is usually necessary to excavate the landslide area. The process is cumbersome and extremely time-consuming. Therefore, an underground landslide pipeline stress simulation test device is proposed. Utility Model Content
[0004] In order to make up for the above shortcomings, the utility model provides an underground collapsed pipeline stress simulation test device, which aims to improve the problem that in order to judge whether the underground pipeline is damaged after the collapse, it is usually necessary to excavate the collapse area, which is a cumbersome and extremely time-consuming process.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an underground collapse pipeline force simulation test device, comprising a frame, a top plate fixedly connected to the top of the frame, three elevators one fixedly connected to the top of the top plate, a force sensor one fixedly connected to the output end of the elevator one, an arc pressure plate fixedly connected to the bottom of the force sensor one, a collar fixedly connected to the left side of the frame, a test pipeline fixedly connected to the inside of the collar, a side simulation component installed on the outside of the frame, a plurality of strain gauges are arranged on the outer periphery of the test pipeline, a strain gauge fixedly connected to the top edge of the frame, foam is arranged inside the frame, a cavity is opened inside the foam, a filling component is installed on the side of the frame away from the strain gauge, a collar three is fixedly connected to the right side of the frame, and a baffle is fixedly connected to the output end of the collar three.
[0006] As a further description of the above technical solution:
[0007] The side simulation component includes a side plate, the outer wall of the side plate is fixedly connected to the side of the frame away from the strain gauge, the middle of the side plate is fixedly connected to a second elevator, the output end of the second elevator is fixedly connected to a second force sensor, and the side of the second force sensor away from the second elevator is fixedly connected to a push plate.
[0008] As a further description of the above technical solution:
[0009] The filling assembly comprises a storage column, which is fixedly connected to the outer wall of the frame. A hose is sleeved on the outer periphery of the storage column, and a puncture needle is fixedly connected to the bottom end of the hose.
[0010] As a further description of the above technical solution:
[0011] The test pipe and the strain gauge are both located inside the foam, and the cavity is located on the outer side of the test pipe.
[0012] As a further description of the above technical solution:
[0013] The test pipe is located below the arc-shaped pressure plate, and the test pipe is located on a side of the push plate away from the second force sensor.
[0014] As a further description of the above technical solution:
[0015] A transparent plate is installed on one side of the frame away from the side plate, and a plurality of universal wheels are installed on the bottom of the frame.
[0016] As a further description of the above technical solution:
[0017] The strain gauge is electrically connected to the strain meter, the force sensor 1 is electrically connected to the strain meter, and the force sensor 2 is electrically connected to the strain meter.
[0018] The utility model has the following beneficial effects:
[0019] In the utility model, through the cooperation of lifter 1, force sensor 1, arc pressure plate, lifter 2, force sensor 2, push plate, strain gauge, foam and cavity, the foam can simulate the floating soil effect on the top of the pipeline, and the cavity can simulate the collapse effect at the pipeline, so as to ensure that the device can simulate the stress condition of the underground pipeline when it collapses from multiple directions, and then simulate and test the force that the underground pipeline bears when it collapses, and then judge whether the pipeline is seriously damaged through the result of the simulation test. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A stereoscopic diagram of a stress simulation test device for underground collapse pipelines proposed by the utility model from a first viewing angle;
[0021] Figure 2 A stereoscopic diagram of a stress simulation test device for underground collapse pipelines proposed by the utility model from a second viewing angle;
[0022] Figure 3 This is a frame cross-sectional view of an underground collapse pipeline stress simulation test device proposed by the utility model;
[0023] Figure 4 The utility model provides a hollow structure schematic diagram of an underground collapse pipeline stress simulation test device.
[0024] Legend:
[0025] 1. Frame; 2. Top plate; 3. Lifter 1; 4. Force sensor 1; 5. Arc pressure plate; 6. Ring; 7. Test pipe; 8. Side plate; 9. Lifter 2; 10. Force sensor 2; 11. Push plate; 12. Strain gauge; 13. Strain meter; 14. Transparent plate; 15. Foam; 16. Hole; 17. Storage column; 18. Hose; 19. Puncture needle; 20. Universal wheel; 21. Lifter 3; 22. Baffle. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0027] Reference Figure 1 - Figure 3The utility model provides an embodiment: a stress simulation test device for underground collapse pipeline, comprising a frame 1, a top plate 2 fixedly connected to the top of the frame 1, and three elevators 3 fixedly connected to the top of the top plate 2. The elevator 3 is lifted and lowered by worm gear loading, and the self-locking characteristics of the worm gear can be used to ensure that the elevator will not loosen during operation. The elevator 3 is fixed by the top plate 2, so that the elevator 3 can apply pressure to the top of the foam 15 when it is started, and then the foam 15 can simulate the situation that the top floating soil at the underground collapse pipeline exerts pressure on the pipeline, so that the role of the elevator 3 is to simulate the weight of the top floating soil of the collapse area pipe belt. The output end of the elevator 3 is fixedly connected to a force sensor 4, and the bottom of the force sensor 4 is fixedly connected to an arc pressure plate 5. The left side of the frame 1 is fixedly connected to a collar 6, and the inside of the collar 6 is fixedly connected to a test pipeline 7. The outer side of the frame 1 is installed with a side simulation component, and the outer periphery of the test pipeline 7 is provided with a plurality of strain gauges 12. Start the elevator 13 to push the arc-shaped pressing plate 5 downward and squeeze the top of the foam 15. As the foam 15 continues to squeeze the foam 15, the foam 15 can simulate the floating soil on the top of the pipe in the collapsed area. Then, as the elevator 13 continues to be started, the arc-shaped pressing plate 5 will continue to apply pressure to the foam 15 and transfer the applied pressure to the test pipe 7. At this time, the force sensor 14 and the strain gauge 12 on the outside of the test pipe 7 can accurately test the force borne by the test pipe 7 at this time. Then, the force condition of the pipe in the collapsed area can be simulated and tested conveniently.
[0028] Reference Figure 1 - Figure 3 A strain gauge 13 is fixedly connected to the top edge of the frame 1. The strain gauge 13 can receive the signal transmitted during the simulation test, and then accurately simulate the weight of the loose soil on the top of the underground pipeline during the landslide. In addition, the strain gauge 13 is equipped with corresponding control and display components, which can convert the received signal into a digital signal display for easy viewing by the simulation test personnel. Foam 15 is arranged inside the frame 1, and a cavity 16 is opened inside the foam 15. A filling component is installed on the side of the frame 1 away from the strain gauge 13. When it is necessary to test the pressure generated by the loose soil on the top of the pipeline, the cavity 16 can be opened in the attached position through the filling component. Figure 3 When it is necessary to test the pressure exerted by the loose soil on the pipeline in the collapsed area, the cavity 16 can be opened at the position shown in the figure by the filling assembly. Figure 4The position shown. The test pipe 7 and the strain gauge 12 are both located inside the foam 15, so that the foam 15 can transfer the force it receives to the strain gauge 12 in the first time when it is subjected to force, and the force sensor is used to test the force applied to the pipeline. Then, the pressure exerted on the pipeline by the loose soil on the top or the loose soil on the side during landslide is simulated. The cavity 16 is located on one side outside the test pipe 7. By reasonably opening the position of the cavity 16 around the test pipe 7, the pressure from the loose soil on the underground pipeline during the landslide can be fully simulated and tested. A lift 3 21 is fixedly connected to the right side of the frame 1, and a baffle 22 is fixedly connected to the output end of the lift 3 21. When the arc pressure plate 5 is driven downward by the elevator 3 to squeeze the foam 15, the force received will be transmitted to the test pipe 7 through the foam 15. At the same time, due to the lack of support on the right side of the test pipe 7, the test pipe 7 will be tilted and deformed. At the same time, through the cooperation of the elevator 3 21 and the baffle 22 on the right side, it is ensured that the right end of the test pipe 7 can be supported and the test pipe 7 can be pushed during the simulated landslide, further simulating the scene in which the underground pipeline is squeezed by the top floating soil during the landslide.
[0029] Reference Figure 1 , Figure 2 and Figure 4 The side simulation component includes a side plate 8, the outer wall of the side plate 8 is fixedly connected to the side of the frame 1 away from the strain gauge 13, the middle of the side plate 8 is fixedly connected to the lift 2 9, the output end of the lift 2 9 is fixedly connected to the force sensor 2 10, and the side of the force sensor 2 10 away from the lift 2 9 is fixedly connected to the push plate 11. Open the hole 16 as shown in the attached Figure 4The position of the foam 15 can be determined by rotating the lift 2 9 so that the push plate 11 can apply pressure to the side of the foam 15, and then the pressure of the side is transmitted to the test pipe 7 and a strain gauge 12 thereon through the foam 15, and then the stress condition of the side of the underground collapsed pipe is simulated and tested. The test pipe 7 is located below the arc-shaped pressure plate 5, and the test pipe 7 is located on the side of the push plate 11 away from the force sensor 2 10, so that the collar 6 or the push plate 11 can transmit pressure to the test pipe 7 when it is active, and then the strain gauge 12 on the test pipe 7 is deformed, and the applied force can be tested with the force sensor 1 4 or the force sensor 2 10, and then the weight of the floating soil is simulated. A transparent plate 14 is installed on the side of the frame 1 away from the side plate 8. Through the transparent plate 14, the state of the foam 15 when it is squeezed by force can be observed, and the state of the test pipe 7 when it is stressed can be observed to determine whether it is deformed or cracked. At the same time, a monitoring camera can be installed in front of the transparent plate 14 to record the entire process of the pipeline during the simulation test, which is convenient for later viewing and analysis. A plurality of universal wheels 20 are installed at the bottom of the frame 1, and the device can be conveniently transferred through the universal wheels 20, so as to facilitate simulation testing at a suitable site. The strain gauge 12 and the strain meter 13 are electrically connected, the force sensor 14 and the strain meter 13 are electrically connected, and the force sensor 2 10 and the strain meter 13 are electrically connected. The force sensor 14 or the force sensor 2 10 can transmit the electrical signal generated when the force is applied to the strain meter 13, and at the same time, the voltage signal of the strain gauge 12 will also change when the force is applied and deformed. These changes will be transmitted to the strain meter 13, and the electrical signal will be converted into a digital signal with the help of the strain meter 13, so that the tester can understand the magnitude of the force applied to the pipeline. The weight of the floating soil can be calculated according to the density of the floating soil sampled in the area where the pipeline is located, and then the corresponding force can be applied to the pipeline according to the calculated floating soil weight to perform simulation testing to determine whether the pipeline will be damaged when it collapses. The filling assembly includes a storage column 17, which is fixedly connected to the outer wall of the frame 1. A hose 18 is sleeved on the outer periphery of the storage column 17, and a puncture needle 19 is fixedly connected to the bottom end of the hose 18. The puncture needle 19 is inserted into the foam 15 and inserted to a specified depth according to the scale on the puncture needle 19, and then an acetone solution is injected into the foam 15 through the hose 18 and the puncture needle 19. The acetone solution dissolves the foam 15, so that a cavity 16 can be formed, and the cavity 16 is used to simulate the collapse of the underground pipeline.
[0030] Working principle: Before conducting a simulated stress test on a collapsed pipeline, first confirm the location of the collapsed pipeline so that the simulated stress direction is consistent with the test purpose. When it is necessary to test the pressure of the top floating soil on the pipeline, open the cavity 16 as shown in the attached figure. Figure 3The puncture needle 19 is inserted into the foam 15 to a specified depth according to the scale on the puncture needle 19, and then an acetone solution is injected into the foam 15 through the hose 18 and the puncture needle 19, and the foam 15 is dissolved by the acetone solution to form the attached Figure 3 The test personnel only need to turn the handle of the elevator 3 at the corresponding position on the top to start the elevator 3 to push the arc pressure plate 5 downward and squeeze the top of the foam 15. As the foam 15 continues to squeeze the foam 15, the foam 15 can simulate the floating soil on the top of the pipe in the collapsed area. Then, as the elevator 3 continues to be started, the arc pressure plate 5 will continue to apply pressure to the foam 15 and transfer the applied pressure to the test pipe 7. At this time, the force sensor 4 and the strain gauge 12 on the outside of the test pipe 7 can be combined to accurately test the force borne by the test pipe 7 at this time. Then, the stress condition of the pipe in the collapsed area can be simulated and tested conveniently.
[0031] Similarly, the hole 16 is opened as shown in the attached Figure 4 At the location, it is only necessary to rotate the elevator 2 9 to make the push plate 11 apply pressure to the side of the foam 15, and then transmit the side pressure to the test pipe 7 and a strain gauge 12 thereon through the foam 15. At the same time, the three elevators 1 3 on the top are started to push the arc pressure plate 5 downward from the top, simulating the pressure exerted on the pipe by the floating soil on the top of the pipe under normal circumstances, and then simulating the stress condition of the side of the underground collapsed pipe.
Claims
1. An underground collapse pipeline stress simulation test device, comprising a frame (1), characterized in that: The top of the frame (1) is fixedly connected to a top plate (2), the top of the top plate (2) is fixedly connected to three elevators (3), the output end of the elevator (3) is fixedly connected to a force sensor (4), the bottom of the force sensor (4) is fixedly connected to an arc-shaped pressure plate (5), the left side of the frame (1) is fixedly connected to a collar (6), the inside of the collar (6) is fixedly connected to a test pipe (7), the outside of the frame (1) is installed with a side simulation component, the periphery of the test pipe (7) is provided with a plurality of strain gauges (12), the top edge of the frame (1) is fixedly connected to a strain gauge (13), the inside of the frame (1) is provided with a foam (15), the inside of the foam (15) is provided with a cavity (16), a filling component is installed on the side of the frame (1) away from the strain gauge (13), the right side of the frame (1) is fixedly connected to an elevator (21), the output end of the elevator (21) is fixedly connected to a baffle (22).
2. The underground collapse pipeline stress simulation test device according to claim 1, characterized in that: The side simulation component comprises a side plate (8), the outer wall of the side plate (8) is fixedly connected to a side of the frame (1) away from the strain gauge (13), the middle of the side plate (8) is fixedly connected to a lifter 2 (9), the output end of the lifter 2 (9) is fixedly connected to a force sensor 2 (10), and the side of the force sensor 2 (10) away from the lifter 2 (9) is fixedly connected to a push plate (11).
3. The underground collapse pipeline stress simulation test device according to claim 1, characterized in that: The filling assembly comprises a storage column (17), the storage column (17) is fixedly connected to the outer wall of the frame (1), a hose (18) is sleeved on the outer periphery of the storage column (17), and a puncture needle (19) is fixedly connected to the bottom end of the hose (18).
4. The underground collapse pipeline stress simulation test device according to claim 1, characterized in that: The test pipe (7) and the strain gauge (12) are both located inside the foam (15), and the cavity (16) is located on the outside of the test pipe (7).
5. The underground collapse pipeline stress simulation test device according to claim 2, characterized in that: The test pipe (7) is located below the arc-shaped pressure plate (5), and the test pipe (7) is located on a side of the push plate (11) away from the force sensor 2 (10).
6. The underground collapse pipeline stress simulation test device according to claim 2, characterized in that: A transparent plate (14) is installed on the side of the frame (1) away from the side plate (8), and a plurality of universal wheels (20) are installed on the bottom of the frame (1).
7. The underground collapse pipeline stress simulation test device according to claim 2, characterized in that: The strain gauge (12) and the strain meter (13) are electrically connected, the force sensor 1 (4) and the strain meter (13) are electrically connected, and the force sensor 2 (10) and the strain meter (13) are electrically connected.