Corrugated metal hose limit displacement testing device and testing method
By designing a corrugated metal hose limit displacement testing device including an upper mounting plate, a lower mounting plate, an upper mounting base, a lower mounting base and a pressurized device, the problem of lack of effective testing methods in the prior art is solved, and the correctness of the problem of the lack of effective testing methods is achieved. The ultimate displacement test of corrugated metal hose ensures the stability of the gas pipeline.
Patent Information
- Application Number
- CN202411338519.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2024-12-27
AI Technical Summary
The prior art lacks testing equipment and methods that can effectively perform the ultimate displacement test of corrugated metal hoses, resulting in gas pipelines being easily damaged during building settlement.
A corrugated metal hose extreme displacement testing device including an upper mounting plate, a lower mounting plate, an upper mounting base, a lower mounting base, a pressurized device and a pressurized pipeline is designed, and the corrugated metal hose to be tested is pressurized. And move the upper mounting plate to simulate its extreme displacement in the gas-used state, and measure its offset.
The ultimate displacement test of corrugated metal hose is achieved. It has a simple structure and convenient operation. It can accurately measure the limit displacement and avoid damage caused by soil settlement of gas pipelines.
Smart Images
Figure CN119198323A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a testing device, in particular to a device and method for testing the limit displacement of a corrugated metal hose. Background Art
[0002] The gas inlet pipe is the boundary section between the indoor and outdoor pipelines of gas-using buildings. Buildings are generally rigid foundations, and settlement control is relatively strict. However, after the construction of the building foundation is completed, the foundation pit needs to be backfilled. The quality of the backfill soil is difficult to meet the standard requirements. Even if the requirements for soil density in the construction specifications can be met, the backfill soil will sink more or less after the rainy season, and the settlement can even reach 15cm~20cm. The buried section of the gas inlet pipe is usually located in the backfill soil area. The backfill soil settlement stabilization period generally takes 2~3 years. If the outdoor floor has not settled steadily during the pipeline construction, the gas pipeline is easily affected by soil settlement during operation, and local stress is formed at the bend or branch point of the pipeline, causing damage to the gas pipeline. To avoid this situation, the current national standard stipulates that when the settlement of the building is greater than 50mm, some compensation measures can be taken for the gas inlet pipe. However, these compensation measures are limited in implementation scenarios and applications, resulting in gas pipeline damage caused by settlement. The industry is trying to take some more effective compensation measures. At present, the compensation measure of using corrugated metal hoses installed on the inlet pipes where gas pipelines enter households is in the exploratory stage. Before installing the corrugated metal hoses on the inlet pipes where gas pipelines enter households, their limit displacement needs to be tested. Currently, there is no test equipment or test method that can perform limit displacement tests on corrugated metal hoses. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a device and method for testing the limit displacement of a corrugated metal hose, which has a simple structure, is easy to operate and can perform a limit displacement test on the corrugated metal hose.
[0004] In order to solve the above technical problems, this application provides the following technical solutions:
[0005] The present invention discloses a device for testing the limit displacement of a corrugated metal hose, comprising an upper mounting plate, a lower mounting plate, an upper mounting seat, a lower mounting seat, a pressurizing device, and a pressurizing pipeline. The upper mounting seat is connected to the upper mounting plate, the lower mounting seat is connected to the lower mounting plate, the upper mounting plate and the lower mounting plate are parallel to each other, the upper mounting plate is suitable for moving to one side in a horizontal plane, the upper mounting seat and the lower mounting seat are respectively used to connect the two ends of the corrugated metal hose to be tested, the lower mounting seat is provided with a through hole, one end of the pressurizing pipeline is connected to the pressurizing device, and the other end of the pressurizing pipeline passes through the through hole to pass into the corrugated metal hose to be tested to pressurize the corrugated metal hose to be tested.
[0006] Furthermore, it also includes a mounting frame, the upper mounting plate and the lower mounting plate are both connected to the mounting frame, and the upper mounting plate is suitable for moving to one side in a horizontal plane relative to the mounting frame.
[0007] Furthermore, it also includes a screw rod, and the upper mounting plate includes a bottom plate and a side plate connected to each other, the bottom plate and the side plate form an L shape, one end of the screw rod passes through the side plate and is rotatably connected to the mounting frame, the screw rod and the side plate are threadedly connected, and a mounting hole is provided on the mounting frame, the bottom plate passes through the mounting hole, and the screw rod is rotated so that the upper mounting plate moves to one side relative to the mounting frame.
[0008] Furthermore, a hand wheel is connected to the screw rod.
[0009] Furthermore, the bottom plate is provided with a scale.
[0010] Further, the upper mounting seat includes an upper fixed flange and an upper flange conversion joint, the upper fixed flange is connected to the upper mounting plate, the upper flange conversion joint is connected to the upper fixed flange, and the upper flange conversion joint is used to connect one end of the corrugated metal hose to be tested, and the lower mounting seat includes a lower fixed flange and a lower flange conversion joint, the lower fixed flange is connected to the lower mounting plate, the lower flange conversion joint is connected to the lower fixed flange, and the lower flange conversion joint is used to connect the other end of the corrugated metal hose to be tested.
[0011] Furthermore, it also includes an adjusting stud, which is arranged on the lower flange conversion joint and is used to adjust the height of the lower flange conversion joint.
[0012] Furthermore, a pressure gauge is provided on the pressurized pipeline.
[0013] The present invention adopts the above-mentioned corrugated metal hose limit displacement test device to test the limit displacement method, comprising the following steps:
[0014] Connect the two ends of the corrugated metal hose to be tested to the upper mounting seat and the lower mounting seat respectively, and keep the corrugated metal hose to be tested in a vertical state.
[0015] Pressurize the corrugated metal hose to be tested to simulate the actual use state of the corrugated metal hose to be tested.
[0016] Move the upper mounting plate to one side to drive one end of the corrugated metal hose to be tested to deviate to one side. When the metal wire covering the corrugated metal hose to be tested breaks, measure the horizontal offset of the upper mounting seat relative to the lower mounting seat, that is, the limit displacement of the corrugated metal hose to be tested.
[0017] Compared with the prior art, the device for testing the limit displacement of a corrugated metal hose of the present invention has at least the following beneficial effects:
[0018] The present invention discloses a device for testing the limit displacement of a corrugated metal hose. The device comprises an upper mounting plate, a lower mounting plate, an upper mounting seat, a lower mounting seat and a pressurizing device. Therefore, the corrugated metal hose to be tested can be pressurized to simulate an actual use state of being filled with gas. The upper mounting plate can be moved to make the corrugated metal hose to be tested reach the displacement limit. Therefore, the limit displacement test of the corrugated metal hose can be performed. The device has a simple structure and is easy to operate.
[0019] The device for testing the limit displacement of a corrugated metal hose according to the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic structural diagram of the device for testing the limit displacement of a corrugated metal hose according to the present invention. DETAILED DESCRIPTION
[0021] like Figure 1As shown, a device for testing the limit displacement of a corrugated metal hose of the present invention comprises an upper mounting plate 11, a lower mounting plate 12, an upper mounting seat 13, a lower mounting seat 14, a pressurizing device 15, and a pressurizing pipeline 16. The upper mounting seat 13 is connected to the upper mounting plate 11, and the lower mounting seat 14 is connected to the lower mounting plate 12. The upper mounting plate 11 and the lower mounting plate 12 are parallel to each other. The upper mounting plate 11 is suitable for moving to one side in a horizontal plane. The upper mounting seat 13 and the lower mounting seat 14 are respectively used to connect the two ends of a corrugated metal hose 20 to be tested. A through hole is provided on the lower mounting seat 14. One end of the pressurizing pipeline 16 is connected to the pressurizing device 15, and the other end of the pressurizing pipeline 16 passes through the through hole to pass into the corrugated metal hose 20 to be tested to pressurize the corrugated metal hose 20 to be tested. Specifically, the pressurizing device 15 is an air compressor. When the device for testing the limit displacement of a corrugated metal hose of the present invention is used, the two ends of the corrugated metal hose 20 to be tested are respectively connected to the upper mounting seat 13 and the lower mounting seat 14, and the corrugated metal hose 20 to be tested is kept in a vertical state, the pressurizing device 15 is turned on, and the pressurizing device 15 pressurizes the corrugated metal hose 20 to be tested through the pressurizing pipeline 16 to simulate the actual use state that the corrugated metal hose 20 to be tested is filled with gas, and the upper mounting plate 11 is moved to one side to drive one end of the corrugated metal hose 20 to be tested to deviate to one side. When the metal wire covering the outer surface of the corrugated metal hose 20 to be tested is broken, the horizontal offset of the upper mounting seat 13 relative to the lower mounting seat 14 is measured, that is, the limit displacement of the corrugated metal hose 20 to be tested. The device for testing the limit displacement of a corrugated metal hose of the present invention comprises an upper mounting plate 11, a lower mounting plate 12, an upper mounting seat 13, a lower mounting seat 14, and a pressurizing device 15. Therefore, the corrugated metal hose 20 to be tested can be pressurized to simulate an actual use state of being filled with gas, and the corrugated metal hose 20 to be tested can be made to reach the displacement limit by moving the upper mounting plate 11. Therefore, the limit displacement test of the corrugated metal hose can be performed, and the device has a simple structure and is easy to operate.
[0022] Optionally, a mounting frame 17 is further included, and the upper mounting plate 11 and the lower mounting plate 12 are both connected to the mounting frame 17 . The upper mounting plate 11 is suitable for moving to one side in a horizontal plane relative to the mounting frame 17 .
[0023] Optionally, the upper mounting plate 11 further includes a screw 18, and the upper mounting plate 11 includes a bottom plate and a side plate connected to each other, and the bottom plate and the side plate form an L shape. One end of the screw 18 passes through the side plate and is rotatably connected to the mounting frame 17. The screw 18 is threadedly connected to the side plate. The mounting frame 17 is provided with a mounting hole, and the bottom plate passes through the mounting hole. When the screw 18 is rotated, the upper mounting plate 11 moves to one side relative to the mounting frame 17. Specifically, the mounting frame 17 is a door shape, and the mounting holes are provided on the two vertical plates of the mounting frame 17, and the bottom plate is suitable for moving in the mounting holes. By rotating the screw 18 to move the upper mounting plate 11, the displacement of the upper mounting plate 11 can be accurately controlled.
[0024] Optionally, a hand wheel 181 is connected to the screw rod 18, and the screw rod 18 is operated by the hand wheel 181, which makes the operation more convenient.
[0025] Optionally, a scale is provided on the bottom plate to facilitate measuring the offset of the upper mounting plate 11 .
[0026] Optionally, the upper mounting seat 13 includes an upper fixed flange 131 and an upper flange conversion joint 132, the upper fixed flange 131 is connected to the upper mounting plate 11, the upper flange conversion joint 132 is connected to the upper fixed flange 131, and the upper flange conversion joint 132 is used to connect one end of the corrugated metal hose 20 to be tested, and the lower mounting seat 14 includes a lower fixed flange 141 and a lower flange conversion joint 142, the lower fixed flange 141 is connected to the lower mounting plate 12, the lower flange conversion joint 142 is connected to the lower fixed flange 141, and the lower flange conversion joint 142 is used to connect the other end of the corrugated metal hose 20 to be tested. The corrugated metal hose 20 to be tested is connected by the upper flange conversion joint 132 and the lower flange conversion joint 142, so that the corrugated metal hose limit displacement test device of the present invention can test the limit displacement of the corrugated metal hose 20 to be tested with different diameters.
[0027] Optionally, it also includes an adjusting stud 19, which is arranged on the lower flange conversion joint 142. The adjusting stud 19 is used to adjust the height of the lower flange conversion joint 142. By adjusting the height of the lower flange conversion joint 142, the corrugated metal hose limit displacement testing device of the present invention can test the limit displacement of the corrugated metal hoses 20 to be tested of different lengths.
[0028] Optionally, a pressure gauge 161 is provided on the pressurized pipeline 16 , and the pressure on the pressurized pipeline 16 is measured by the pressure gauge 161 , so that the pressure in the corrugated metal hose 20 to be tested can be controlled more accurately.
[0029] The present invention provides a method for testing the limit displacement using the above-mentioned corrugated metal hose limit displacement testing device, comprising the following steps:
[0030] Connect the two ends of the corrugated metal hose 20 to be tested to the upper mounting seat 13 and the lower mounting seat 14 respectively, and keep the corrugated metal hose 20 to be tested in a vertical state.
[0031] Pressurize the corrugated metal hose 20 to be tested to simulate the actual use state of the corrugated metal hose 20 to be tested being filled with gas.
[0032] The upper mounting plate 11 is moved to one side, causing one end of the corrugated metal hose 20 to be tested to deviate to one side. When the metal wire sheathed on the corrugated metal hose 20 to be tested is broken, the horizontal displacement of the upper mounting seat 13 relative to the lower mounting seat 14 is measured, i.e., the limit displacement of the corrugated metal hose 20 to be tested.
[0033] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.
Claims
1. A corrugated metal hose limit displacement test device, characterized in that: The invention comprises an upper mounting plate (11), a lower mounting plate (12), an upper mounting seat (13), a lower mounting seat (14), a pressurizing device (15), and a pressurizing pipeline (16); the upper mounting seat (13) is connected to the upper mounting plate (11), the lower mounting seat (14) is connected to the lower mounting plate (12), the upper mounting plate (11) and the lower mounting plate (12) are parallel to each other, the upper mounting plate (11) is suitable for moving to one side in a horizontal plane, the upper mounting seat (13) and the lower mounting seat (14) are respectively used to connect two ends of a corrugated metal hose (20) to be tested, the lower mounting seat (14) is provided with a through hole, one end of the pressurizing pipeline (16) is connected to the pressurizing device (15), and the other end of the pressurizing pipeline (16) passes through the through hole and is used to pass into the corrugated metal hose (20) to be tested so as to pressurize the corrugated metal hose (20) to be tested.
2. The device for testing the limit displacement of a corrugated metal hose according to claim 1, characterized in that: It also comprises a mounting frame (17), the upper mounting plate (11) and the lower mounting plate (12) are both connected to the mounting frame (17), and the upper mounting plate (11) is suitable for moving to one side in a horizontal plane relative to the mounting frame (17).
3. The device for testing the limit displacement of a corrugated metal hose according to claim 2, characterized in that: The invention also comprises a screw rod (18), wherein the upper mounting plate (11) comprises a bottom plate and a side plate connected to each other, wherein the bottom plate and the side plate form an L shape, wherein one end of the screw rod (18) passes through the side plate and is rotatably connected to the mounting frame (17), wherein the screw rod (18) is threadedly connected to the side plate, and a mounting hole is provided on the mounting frame (17), wherein the bottom plate passes through the mounting hole, and the screw rod (18) is rotated so that the upper mounting plate (11) moves to one side relative to the mounting frame (17).
4. The device for testing the limit displacement of a corrugated metal hose according to claim 3, characterized in that: The screw rod (18) is connected to a hand wheel (181).
5. The device for testing the limit displacement of a corrugated metal hose according to claim 4, characterized in that: The bottom plate is provided with scales.
6. The device for testing the limit displacement of a corrugated metal hose according to claim 5, characterized in that: The upper mounting seat (13) comprises an upper fixed flange (131) and an upper flange conversion joint (132), wherein the upper fixed flange (131) is connected to the upper mounting plate (11), and the upper flange conversion joint (132) is connected to the upper fixed flange (131), and the upper flange conversion joint (132) is used to connect one end of the corrugated metal hose (20) to be tested. The lower mounting seat (14) comprises a lower fixed flange (141) and a lower flange conversion joint (142), wherein the lower fixed flange (141) is connected to the lower mounting plate (12), and the lower flange conversion joint (142) is connected to the lower fixed flange (141), and the lower flange conversion joint (142) is used to connect the other end of the corrugated metal hose (20) to be tested.
7. The device for testing the limit displacement of a corrugated metal hose according to claim 6, characterized in that: It also includes an adjusting stud (19), which is arranged on the lower flange conversion joint (142) and is used to adjust the height of the lower flange conversion joint (142).
8. The device for testing the limit displacement of a corrugated metal hose according to claim 7, characterized in that: The pressurizing pipeline (16) is provided with a pressure gauge (161).
9. A method for testing the limit displacement using the limit displacement testing device for a corrugated metal hose as claimed in any one of claims 1 to 8, characterized in that: The steps include: The two ends of the corrugated metal hose (20) to be tested are respectively connected to the upper mounting seat (13) and the lower mounting seat (14), and the corrugated metal hose (20) to be tested is kept in a vertical state. Pressurizing the inside of the corrugated metal hose (20) to be tested to simulate the actual use state of the corrugated metal hose (20) to be tested, The upper mounting plate (11) is moved to one side, causing one end of the corrugated metal hose (20) to be tested to deviate to one side. When the metal wire coated on the outer surface of the corrugated metal hose (20) to be tested is broken, the horizontal displacement of the upper mounting seat (13) relative to the lower mounting seat (14) is measured, i.e., the limit displacement of the corrugated metal hose (20) to be tested.