Integrated high-pressure airtight test system suitable for non-flared conduit

Abstract

The utility model discloses an integrated high-pressure airtight test system suitable for a non-flared conduit, which comprises a first support and a support frame, the support frame is detachably connected with the first support, a plurality of support calandria are arranged side by side along the length direction of the support frame, and each support calandria is provided with a plurality of adapters; an air inlet box and multiple air valves are arranged at the top of the supporting frame, an air inlet of the air inlet box is connected with a high-pressure air source, the input ends of the multiple air valves are connected with an air outlet of the air inlet box in parallel through air outlet pipelines, and the output ends of the multiple air valves are connected with the supporting calandria through multiple air inlet pipelines; when the non-flared conduits are connected to the adapters for high-pressure airtight test, a high-pressure air source enters the air inlet box, is distributed into the corresponding supporting calandria through the corresponding air valves, and is conveyed into the non-flared conduits through the adapters, so that the high-pressure airtight test of the plurality of non-flared conduits can be synchronously carried out. The device has the advantages of compact structure, simplicity and convenience in operation, high test efficiency and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of air tightness test equipment for non-expanding conduits, and in particular relates to an integrated high-pressure air tightness test system suitable for non-expanding conduits. Background Art

[0002] During the production of non-flared conduits, according to the requirements of HB5966-2008, all conduits must be 100% tested for air pressure leakage during normal batch production. Air pressure leakage test: Install according to the minimum torque specified in HB7000, and use air or nitrogen to perform working pressure or system pressure test, and keep it for at least 5 minutes. No bubbles are allowed to leak when immersed in water. The maximum test pressure can reach 21MPa.

[0003] The existing test method steps are: provide air source through pressure supply equipment, connect the non-expanded tube to the air source through a single conversion joint to inflate, and after reaching the specified pressure, immerse the single or three series tubes in water to conduct an air pressure leakage test, and maintain the pressure for 5 minutes. After the test is completed, release the pressure and remove the tube. The subsequent test tubes repeat the above steps, which is cumbersome and has low test efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an integrated high-pressure airtightness test system suitable for non-expanded conduits with compact structure, simple operation, high test accuracy and high test efficiency.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An integrated high-pressure airtightness test system suitable for a non-expanded duct comprises: a first bracket and a support frame, wherein both sides of the support frame are detachably mounted on the inner side of the first bracket, a plurality of support pipes are arranged side by side on the inner side of the support frame along the length direction of the support frame, and each support pipe is provided with a plurality of adapters, and the adapters are used to connect the non-expanded duct or plugging cap to be tested; an air inlet box and a plurality of air valves are provided on the top of the support frame, the air inlet of the air inlet box is connected to a high-pressure air source, the input ends of the plurality of air valves are connected in parallel with the air outlet of the air inlet box through air outlet pipes, and the output ends of the plurality of air valves are respectively connected to the support pipes through a plurality of air inlet pipes; when the non-expanded duct is connected to the adapter for a high-pressure airtightness test, the high-pressure air source enters the air inlet box, and is distributed to the corresponding support pipes through the corresponding air valves, and then is transported to the non-expanded duct through the adapter, so as to realize simultaneous high-pressure airtightness testing of the plurality of non-expanded ducts.

[0007] As a further improvement of the utility model, it also includes a second bracket and a movable shelf. The two sides of the movable shelf can be detachably installed on the inner side of the second bracket. The movable shelf is evenly distributed with a plurality of support grooves. When the length of the non-expanded catheter to be tested is too long, the support grooves are used to support the non-expanded catheter to be tested.

[0008] As a further improvement of the utility model, each supporting row of pipes is provided with adapters of the same specifications and / or different specifications, so as to realize simultaneous high-pressure airtightness testing of non-expanded conduits of various specifications.

[0009] As a further improvement of the utility model, the adapter includes a first externally threaded joint, a second externally threaded joint and an external hexagonal joint that are integrally formed. The first externally threaded joint and the second externally threaded joint are respectively located on both sides of the external hexagonal joint. The first externally threaded joint is used to connect the support pipe, and the second externally threaded joint is used to connect the non-expanded conduit or the plugging cap.

[0010] As a further improvement of the present invention, grooves are provided on both sides of the external hexagonal joint, and the grooves are used to install sealing rings to achieve a sealed connection between the adapter and the supporting row pipe and the non-flared conduit or the plugging cap.

[0011] As a further improvement of the utility model, copper sheets are sleeved on the first external thread joint and the second external thread joint to achieve sealed connection between the two side end faces of the external hexagonal joint and the supporting row pipe and the non-expanded conduit or the plugging cap.

[0012] As a further improvement of the present invention, the thickness of the copper sheet is 3±0.2 mm.

[0013] As a further improvement of the present invention, the thread specifications of the adapter include: MJ12×1.25, MJ14×1.5, MJ16×1.5, MJ18×1.5, MJ20×1.5, MJ22×1.5 and MJ27×1.5.

[0014] As a further improvement of the present invention, the supporting row of pipes includes a first supporting row of pipes, a second supporting row of pipes and a third supporting row of pipes with the same structure; the air valve includes a first air valve, a second air valve and a third air valve with the same structure; the air outlet pipe includes a first air outlet pipe, a second air outlet pipe and a third air outlet pipe with the same structure; the air inlet pipe includes a first air inlet pipe, a second air inlet pipe and a third air inlet pipe with the same structure; the first air outlet pipe, the first air valve, the first air inlet pipe and the first supporting row of pipes are connected in sequence, the second air outlet pipe, the second air valve, the second air inlet pipe and the second supporting row of pipes are connected in sequence, and the third air outlet pipe, the third air valve, the third air inlet pipe and the third supporting row of pipes are connected in sequence.

[0015] As a further improvement of the present invention, an exhaust pipe is provided in the first supporting row of pipes, an air intake interface and a plurality of parallel exhaust interfaces are provided on the exhaust pipe, the air intake interface is connected to the first air intake pipe, and the exhaust interface is used to connect to the adapter.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The utility model is suitable for an integrated high-pressure airtightness test system for non-expanded ducts. By detachably mounting the support frame on the inner side of the first bracket, the mounting position of the support frame can be flexibly adjusted according to actual test requirements. Furthermore, by arranging a plurality of support pipes side by side on the inner side of the support frame along the length direction of the support frame, and providing a plurality of adapters on each of the support pipes, when a test is required, the adapter is used to connect the non-expanded duct to be tested. When a test is not required, a plugging cap can be installed on the adapter, which is flexible and convenient. At the same time, an air inlet box and a plurality of air valves are provided on the top of the support frame. The air inlet of the air inlet box is connected to a high-pressure air source, and the input ends of the plurality of air valves are connected to the high-pressure air source. The air outlet pipe is connected in parallel with the air outlet of the air inlet box, and the output ends of multiple air valves are connected to the supporting row pipes through multiple air inlet pipes, respectively, so that the air circuit is connected; when the non-expanded duct is connected to the adapter for a high-pressure airtightness test, the high-pressure gas source first enters the air inlet box through the air inlet, and then is distributed to the corresponding supporting row pipes through the corresponding air valves, and finally is transported to the non-expanded duct through the adapter, which well realizes the simultaneous high-pressure airtightness test of multiple non-expanded ducts. While ensuring that multiple non-expanded ducts have the same test pressure, it is possible to simultaneously integrate multiple specifications and multiple ducts for air pressure leakage testing, thereby improving labor productivity and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structural principle of an integrated high-pressure airtightness test system suitable for a non-expanded duct in a specific embodiment of the utility model.

[0019] Figure 2 It is a schematic diagram of the structural principle from another perspective of the integrated high-pressure airtightness test system suitable for non-expanded ducts in a specific embodiment of the utility model.

[0020] Figure 3 It is a schematic diagram of the structural principle of supporting the row pipes in a specific embodiment of the utility model.

[0021] Figure 4 It is a schematic diagram of the structural principle of the adapter in a specific embodiment of the utility model.

[0022] Figure 5 It is a schematic diagram of the connection structure principle between the adapter and the plugging cap in a specific embodiment of the utility model.

[0023] Legend: 1. First bracket; 2. Support frame; 21. First support row of pipes; 22. Second support row of pipes; 23. Third support row of pipes; 211. Exhaust pipe; 212. Inlet interface; 213. Exhaust interface; 31. First air valve; 32. Second air valve; 33. Third air valve; 4. Inlet box; 41. Air inlet; 51. First air outlet pipe; 52. Second air outlet pipe; 53. Third air outlet pipe; 54. First air inlet pipe; 55. Second air inlet pipe; 56. Third air inlet pipe; 6. Second bracket; 7. Movable shelf; 71. Support groove; 8. Connecting bolt; 9. Adapter; 91. First external threaded joint; 92. Second external threaded joint; 93. External hexagonal joint; 94. Groove; 10. Plug cap; 11. Copper sheet. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0025] Example

[0026] like Figures 1 to 5 As shown, the utility model is suitable for an integrated high-pressure airtightness test system for non-expanded ducts, comprising: a first bracket 1 and a support frame 2, the two sides of the support frame 2 are detachably mounted on the inner side of the two first brackets 1 by connecting bolts 8, a plurality of support pipes are arranged side by side on the inner side of the support frame 2 along the length direction of the support frame 2, and each support pipe is provided with a plurality of adapters 9, and the adapters 9 are used to connect the non-expanded duct or plugging cap 10 to be tested. An air inlet box 4 and a plurality of air valves are provided on the top of the support frame 2, and the air inlet box 4 adopts a one-inlet and multiple-outlet structure. The air inlet 41 of the air inlet box 4 is connected to a high-pressure gas source, the input ends of the plurality of air valves are connected in parallel with the air outlet of the air inlet box 4 through an air outlet pipe, and the output ends of the plurality of air valves are respectively connected to the support pipes through a plurality of air inlet pipes. When the non-flared duct is connected to the adapter 9 for a high-pressure airtightness test, the high-pressure gas source enters the air inlet box 4 and is distributed to the corresponding supporting pipes through the corresponding air valves, and then transported to the non-flared duct through the adapter 9, so as to realize the simultaneous high-pressure airtightness test of multiple non-flared ducts.

[0027] In the present embodiment, by detachably mounting the support frame 2 on the inner side of the first bracket 1, the installation position of the support frame 2 can be flexibly adjusted according to actual testing requirements. Furthermore, by arranging a plurality of support pipes side by side on the inner side of the support frame 2 along the length direction of the support frame 2, and providing a plurality of adapters 9 on each of the support pipes, when testing is required, the adapter 9 is used to connect the non-expanded conduit to be tested, and when testing is not required, a plugging cap can be installed on the adapter 9, which is flexible and convenient. At the same time, an air inlet box 4 and a plurality of air valves are provided on the top of the support frame 2, the air inlet 41 of the air inlet box 4 is connected to a high-pressure air source, the input ends of the plurality of air valves are connected in parallel with the air outlet of the air inlet box 4 through an air outlet pipe, and the output ends of the plurality of air valves are respectively connected to the support pipes through a plurality of air inlet pipes, thereby achieving air path connectivity. When the non-flare duct is connected to the adapter for a high-pressure air-tightness test, the high-pressure gas source first enters the air inlet box through the air inlet, and then is distributed to the corresponding supporting pipes through the corresponding air valves, and finally is transported to the non-flare duct through the adapter, thereby effectively realizing the simultaneous high-pressure air-tightness test of multiple non-flare ducts. While ensuring that multiple non-flare ducts have the same test pressure, it is possible to simultaneously integrate multiple specifications and multiple ducts for air pressure leakage testing, thereby improving labor productivity and saving production costs.

[0028] like Figure 1 and Figure 2 As shown, in this embodiment, the support pipe includes a first support pipe 21, a second support pipe 22 and a third support pipe 23 with the same structure. The air valve includes a first air valve 31, a second air valve 32 and a third air valve 33 with the same structure. The air outlet pipe includes a first air outlet pipe 51, a second air outlet pipe 52 and a third air outlet pipe 53 with the same structure. The air inlet pipe includes a first air inlet pipe 54, a second air inlet pipe 55 and a third air inlet pipe 56 with the same structure. The first air outlet pipe 51, the first air valve 31, the first air inlet pipe 54 and the first support pipe 21 are connected in sequence, the second air outlet pipe 52, the second air valve 32, the second air inlet pipe 55 and the second support pipe 22 are connected in sequence, and the third air outlet pipe 53, the third air valve 33, the third air inlet pipe 56 and the third support pipe 23 are connected in sequence, so that the three branches can be tested for high pressure airtightness at the same time.

[0029] like Figure 3As shown, in this embodiment, an exhaust pipe 211 is provided in the first supporting row of pipes 21, and an air inlet interface 212 and a plurality of exhaust interfaces 213 in parallel are provided on the exhaust pipe 211. Both the air inlet interface 212 and the exhaust interface 213 adopt an internal thread structure to improve the reliability of the connection; the air inlet interface 212 is connected to the first air inlet pipe 54, and the exhaust interface 213 is used to connect the adapter 9. Moreover, adapters 9 of the same specifications and / or different specifications are provided on each supporting row of pipes to achieve simultaneous high-pressure airtightness tests of non-expanded conduits of various specifications. Specifically, in this embodiment, a total of 8 exhaust interfaces 213 are provided on the exhaust pipe 211, and 8 adapters 9 can be connected at the same time. Three supporting rows of pipes can simultaneously perform high-pressure airtightness tests on at least 24 non-expanded conduits.

[0030] In this embodiment, a second bracket 6 and a movable shelf 7 are also included. Both sides of the movable shelf 7 are detachably mounted on the inner side of the second bracket 6 by connecting bolts 8. A plurality of support grooves 71 are evenly distributed on the movable shelf 7. When the length of the non-expanded conduit to be tested is too long, the support grooves 71 are used to support the non-expanded conduit to be tested. When the non-expanded conduit is too long, the movable shelf 7 can be used to support the conduit. The movable shelf 7 can be moved up, middle and down on the second bracket 6, and can also be increased or decreased according to specific test conditions to avoid bending and deformation of the conduit and improve the accuracy of the test.

[0031] like Figure 4 and Figure 5 As shown, in this embodiment, the adapter 9 includes an integrally formed first external threaded joint 91, a second external threaded joint 92 and an external hexagonal joint 93. The first external threaded joint 91 and the second external threaded joint 92 are respectively located on both sides of the external hexagonal joint 93. The first external threaded joint 91 is used to connect the supporting row pipe, and the second external threaded joint 92 is used to connect the non-expanded conduit or the plugging cap 10.

[0032] In this embodiment, grooves 94 are provided on both sides of the external hexagonal joint 93, and the grooves 94 are used to install sealing rings to achieve a sealed connection between the adapter 9 and the supporting row pipe and the non-flared conduit or the plugging cap 10. Further, a copper sheet 11 is sleeved on the first external threaded joint 91 and the second external threaded joint 92. When connected, the copper sheet 11 fits on the connecting end surface to achieve a sealed connection between the two side end surfaces of the external hexagonal joint 93 and the supporting row pipe and the non-flared conduit or the plugging cap 10. The double sealing effect of the sealing ring and the copper sheet 11 ensures that the joint does not leak under a high pressure of 21MPa.

[0033] Specifically, the plugging cap 10 can be made of LF2M material, and the thickness of the copper sheet 11 is 3 mm.

[0034] In this embodiment, the thread specifications of the 24 adapters 9 on the three supporting pipes include: MJ12×1.25 (8 pieces), MJ14×1.5 (8 pieces), MJ16×1.5 (2 pieces), MJ18×1.5 (2 pieces), MJ20×1.5 (2 pieces), MJ22×1.5 (1 piece) and MJ27×1.5 (1 piece), which can cover all specifications of non-flared ducts. After the non-flared duct high-pressure test module is connected to the air source, the 24 adapters 9 can be inflated at the same time by adjusting the switch. For ducts with the same test pressure, the high-pressure test module only needs to be pressurized once after being connected to the air source. Within 5 minutes, up to 72 non-flared ducts can be tested for air pressure leakage at the same time, which greatly saves repeated operation time. Compared with conventional working methods, it can save at least 6 hours and significantly improve work efficiency.

[0035] In the present embodiment, the non-flare duct high-pressure airtightness test module is designed to connect the air source to test multiple specifications and multiple non-flare ducts. The air inlet nozzle is connected to the air source, and air is supplied to the upper, middle and lower supporting pipes respectively through three air valve switches. The corresponding air valve switch is opened when the supporting pipe is needed. Eight non-flare duct adapters 9 are installed on each pipe, and each adapter 9 is provided with a plugging cap 10. If any adapter 9 is needed, the plugging cap 10 can be removed and the non-flare duct can be connected.

[0036] Although the utility model is disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the utility model without departing from the spirit and technical solution of the utility model, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. An integrated high-pressure airtightness test system suitable for non-expanded conduits, characterized in that: include: A first bracket (1) and a support frame (2), wherein both sides of the support frame (2) are detachably mounted on the inner side of the first bracket (1), a plurality of support pipes are arranged side by side on the inner side of the support frame (2) along the length direction of the support frame (2), and each support pipe is provided with a plurality of adapters (9), wherein the adapters (9) are used to connect the non-expanded conduit or plugging cap (10) to be tested; an air inlet box (4) and a plurality of air valves are provided on the top of the support frame (2), an air inlet (41) of the air inlet box (4) is connected to a high-pressure air source, the input ends of the plurality of air valves are connected in parallel to the air outlet of the air inlet box (4) through air outlet pipes, and the output ends of the plurality of air valves are respectively connected to the support pipes through the plurality of air inlet pipes; when the non-expanded conduit is connected to the adapter (9) for a high-pressure airtightness test, the high-pressure air source enters the air inlet box (4), is distributed to the corresponding support pipes through the corresponding air valves, and is then transported to the non-expanded conduit through the adapter (9), so as to realize a high-pressure airtightness test of the plurality of non-expanded conduits simultaneously.

2. The integrated high-pressure airtightness test system for non-expanded conduits according to claim 1, characterized in that: It also comprises a second bracket (6) and a movable shelf (7), wherein two sides of the movable shelf (7) are detachably mounted on the inner side of the second bracket (6), and a plurality of support grooves (71) are evenly distributed on the movable shelf (7). When the length of the non-expanded conduit to be tested is too long, the support grooves (71) are used to support the non-expanded conduit to be tested.

3. The integrated high-pressure airtightness test system for non-expanded conduits according to claim 2, characterized in that: Each supporting row of pipes is provided with an adapter (9) of the same specification and / or different specifications, so as to realize simultaneous high-pressure airtightness testing of non-expanded conduits of various specifications.

4. The integrated high-pressure airtightness test system for non-expanded conduits according to claim 3, characterized in that: The adapter (9) comprises a first externally threaded joint (91), a second externally threaded joint (92) and an external hexagonal joint (93) which are integrally formed; the first externally threaded joint (91) and the second externally threaded joint (92) are respectively located on two sides of the external hexagonal joint (93); the first externally threaded joint (91) is used to connect the supporting row pipe, and the second externally threaded joint (92) is used to connect the non-expanded conduit or the plugging cap (10).

5. The integrated high-pressure airtightness test system for non-expansion conduits according to claim 4, characterized in that: Grooves (94) are provided on both sides of the external hexagonal joint (93), and the grooves (94) are used to install sealing rings to achieve a sealed connection between the adapter (9) and the supporting row pipe and the non-expanded conduit or the plugging cap (10).

6. The integrated high-pressure airtightness test system for non-expanded conduits according to claim 5, characterized in that: The first external thread joint (91) and the second external thread joint (92) are both sleeved with a copper sheet (11) to achieve a sealed connection between the two side end surfaces of the external hexagonal joint (93) and the supporting row pipe and the non-expanded conduit or the plugging cap (10).

7. The integrated high-pressure airtightness test system for non-expanded conduits according to claim 6, characterized in that: The thickness of the copper sheet (11) is 3±0.2 mm.

8. The integrated high-pressure airtightness test system for non-expanded conduits according to any one of claims 2 to 7, characterized in that: The thread specifications of the adapter (9) include: MJ12×1.25, MJ14×1.5, MJ16×1.5, MJ18×1.5, MJ20×1.5, MJ22×1.5 and MJ27×1.

5.

9. The integrated high-pressure airtightness test system for non-expanded conduits according to any one of claims 1 to 7, characterized in that: The supporting pipe row comprises a first supporting pipe row (21), a second supporting pipe row (22) and a third supporting pipe row (23) having the same structure; the air valve comprises a first air valve (31), a second air valve (32) and a third air valve (33) having the same structure; the air outlet pipe comprises a first air outlet pipe (51), a second air outlet pipe (52) and a third air outlet pipe (53) having the same structure; the air inlet pipe comprises a first air inlet pipe (54), a second air inlet pipe (55) and a third air inlet pipe (56) having the same structure; the first air outlet pipe (51), the first air valve (31), the first air inlet pipe (54) and the first supporting pipe row (21) are connected in sequence; the second air outlet pipe (52), the second air valve (32), the second air inlet pipe (55) and the second supporting pipe row (22) are connected in sequence; the third air outlet pipe (53), the third air valve (33), the third air inlet pipe (56) and the third supporting pipe row (23) are connected in sequence.

10. The integrated high-pressure airtightness test system for non-expanded conduits according to claim 9, characterized in that: An exhaust pipe (211) is provided in the first supporting row of pipes (21), an air intake interface (212) and a plurality of exhaust interfaces (213) connected in parallel are provided on the exhaust pipe (211), the air intake interface (212) is connected to the first air intake pipe (54), and the exhaust interface (213) is used to connect to the adapter (9).

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