A cable water permeability test device

Abstract

The application relates to a cable water permeation test device, which comprises a main body, a steel body, a sealing assembly and a water supply and discharge assembly, the steel body is arranged on the main body, and a test cavity is formed in the steel body; the sealing assembly is arranged on the steel body, the sealing assembly and the cable jointly block the test cavity; the water supply and discharge assembly is arranged on the main body and communicates with the test cavity, and further comprises a feedback mechanism, the feedback mechanism comprises a first connecting pipe, a feedback tank and a water level sensor, the first connecting pipe is arranged on the steel body and communicates with the test cavity, and the feedback tank is arranged on the first connecting pipe; the water level sensor is arranged on the feedback tank and connected with the water supply and discharge assembly. The application has the effect of guaranteeing the accuracy of test results.

Description

Technical Field

[0001] This application relates to the technical field of cable testing devices, and in particular to a cable water penetration test device. Background Technology

[0002] The cable water penetration test is to check whether there is water leakage in the cable's insulation layer, outer sheath, and connectors. It involves immersing the cable in water for a certain period of time in a simulated actual use environment.

[0003] Currently, Chinese patent CN113933226A discloses a water permeability testing device for medium and low voltage power cables, comprising: a water storage tank, a U-shaped plate and a lower shell fixed to the top of the water storage tank, the lower shell being located inside the U-shaped plate, an upper shell being provided on the top of the lower shell, the lower shell and the upper shell forming an inner cavity, a lower box body and an upper box body being provided inside the inner cavity, the lower box body and the upper box body forming a test chamber, the upper shell and the upper box body being connected to the U-shaped plate through a telescopic component; a water pump is provided on the water storage tank, a water pipe is installed at the output end of the water pump, the other end of the water pipe extends to the inner side of the cavity and is fixedly connected to the bottom of the lower box body; when both the inner cavity and the test chamber are closed, the water pump starts, pumping water from the inside of the water storage tank into the inside of the test chamber to pressurize the test chamber.

[0004] When the water pumped from the inside of the water tank into the test chamber, it is unclear whether the cable inside the test chamber is completely submerged in water. If the cable is not completely submerged in water, the test results will be inaccurate. Utility Model Content

[0005] To ensure the accuracy of the test results, this application provides a cable water permeability test device.

[0006] This application provides a cable water penetration testing device, which adopts the following technical solution: A cable water permeability testing device includes a main body, a steel body, a sealing assembly, and a water supply and discharge assembly. The steel body is disposed on the main body and has a test cavity formed thereon. The sealing assembly is disposed on the steel body and together with the cable seals the test cavity. The water supply and discharge assembly is disposed on the main body and communicates with the test cavity. The device also includes a feedback mechanism, which comprises a first connecting pipe, a feedback tank, and a water level sensor. The first connecting pipe is disposed on the steel body and communicates with the test cavity, and the feedback tank is disposed on the first connecting pipe. The water level sensor is disposed on the feedback tank and connected to the water supply and discharge assembly.

[0007] By adopting the above technical solution, when the cable is located inside the test chamber and the sealing component and cable seal the test chamber, the water supply and discharge component injects water into the test chamber. When the test chamber is full, the water in the test chamber will enter the feedback tank through the first connecting pipe. When the water level sensor senses that the water level in the feedback tank has reached a certain height, the water level sensor will control the water supply and discharge component to stop injecting water into the test chamber. When there is water in the feedback tank, it indicates that the test chamber is full of water, and the part of the cable being tested will be completely immersed in the water. Therefore, the feedback mechanism can ensure the accuracy of the test results.

[0008] Optionally, the sealing assembly includes an end block, a sealing ring, a clamping block, and a connector. The end block is disposed on the steel body and seals the test chamber. The end block has a first through hole communicating with the test chamber and a placement groove communicating with the first through hole. The sealing ring is disposed in the placement groove. The clamping block is disposed on the end block through the connector and abuts against the sealing ring. The clamping block has a second through hole communicating with the first through hole.

[0009] By adopting the above technical solution, when part of the cable is located in the test chamber, part of the cable will be located in the first through hole and the second through hole. When the clamping block presses the sealing ring, the sealing ring will deform. The deformed sealing ring will press against the side wall of the cable, thereby reducing the phenomenon of water leakage in the test chamber.

[0010] Optionally, the clamping block includes a first fixing block and a second fixing block. The first fixing block is connected to the end block through the connector, and a third through hole is provided on the first fixing block. The second fixing block is disposed on the first fixing block, and a fourth through hole is provided on the second fixing block. The fourth through hole and the third through hole form the second through hole, and the second fixing block abuts against the sealing ring.

[0011] Optionally, the clamping block is provided with a positioning block, and the end block is provided with a positioning groove that engages with the positioning block; the connecting member includes a connecting bolt, the clamping block is provided with a fifth through hole, the end block is provided with a first threaded hole, and the connecting bolt passes through the fifth through hole and is threadedly connected to the first threaded hole.

[0012] By adopting the above technical solution, the positioning block is snapped into the positioning groove, so that the axis of the fifth through hole will coincide with the axis of the first threaded hole, and then the connecting bolt is threaded through the fifth through hole and connected to the first threaded hole.

[0013] Optionally, the steel body is provided with an exhaust assembly, which includes a second connecting pipe and a first switching valve. The second connecting pipe is disposed on the steel body and communicates with the test chamber; the first switching valve is disposed on the second connecting pipe.

[0014] By adopting the above technical solution, when water enters the test chamber, the water will squeeze the gas in the test chamber, and the gas in the test chamber will enter the second connecting pipe and be discharged; when the test chamber is filled with water, the water will enter the second connecting pipe. When there is water in the second connecting pipe, the first switch valve is closed, so that the water will no longer flow in the second connecting pipe.

[0015] Optionally, a transparent U-shaped tube is provided on the second connecting pipe, and a third connecting pipe is provided at the lowest end of the transparent U-shaped tube, and a second switching valve is provided on the third connecting pipe.

[0016] By adopting the above technical solution, when the gas in the test chamber enters the second connecting pipe, the gas will be discharged through the transparent U-shaped tube. At this time, the second switch valve is in the closed state and the first switch valve is in the open state. When the water in the test chamber enters the second connecting pipe, the water in the second connecting pipe will enter the transparent U-shaped tube. When the water level in the transparent U-shaped tube reaches a certain height, the first switch valve is closed, so that the water will no longer flow in the second connecting pipe. Before subsequent cable testing, the second switch valve is opened, so that the water in the transparent U-shaped tube is discharged through the third connecting pipe.

[0017] Optionally, the main body is provided with a reinforcement mechanism, which includes a support frame, a first reinforcement block, a second reinforcement block, and a reinforcement component. The support frame is disposed on the main body, the first reinforcement block is disposed on the support frame, and the first reinforcement block has a first reinforcement groove that abuts against the first connecting pipe. The second reinforcement block is disposed on the first reinforcement block through the reinforcement component, and the second reinforcement block has a second reinforcement groove that abuts against the first connecting pipe.

[0018] By adopting the above technical solution, the sidewall of the first reinforcing groove on the first reinforcing block abuts against the sidewall of the first connecting pipe. Then, the second reinforcing block is moved so that the sidewall of the second reinforcing groove on the second reinforcing block abuts against the sidewall of the first connecting pipe. Then, the reinforcing component connects the second reinforcing block and the first reinforcing block. In this way, the first reinforcing block and the second reinforcing block clamp the first connecting pipe, thereby improving the stability of the first connecting pipe. The reinforcement mechanism can improve the stability of the first connecting pipe on the steel body, thereby reducing the phenomenon of the first connecting pipe shaking caused by water turbulence.

[0019] Optionally, the first connecting pipe is provided with a connecting ring, the first reinforcing block is provided with a first limiting groove communicating with the first reinforcing groove, the second reinforcing block is provided with a second limiting groove communicating with the second reinforcing groove, and a part of the connecting ring is located in the first limiting groove and the other part is located in the second limiting groove.

[0020] By adopting the above technical solution, when the first reinforcing groove on the first reinforcing block abuts against the first connecting pipe, a portion of the connecting ring is located in the first limiting groove; when the second reinforcing groove on the second reinforcing block abuts against the first connecting pipe, a portion of the connecting ring will be located in the second limiting groove; the first limiting groove and the second limiting groove limit the connecting ring, thereby improving stability.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The established feedback mechanism ensures the accuracy of the test results; 2. The reinforcement mechanism can improve the stability of the first connecting pipe on the steel body, thereby reducing the shaking of the first connecting pipe caused by water turbulence. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the cable water permeability test device in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the sealing assembly in Embodiment 1 of this application; Figure 3 for Figure 2 Enlarged view of A in the middle; Figure 4 This is a schematic diagram of the reinforcement mechanism in Embodiment 1 of this application; Figure 5 This is a schematic diagram of the structure of the first reinforcing block in Embodiment 2 of this application; Figure 6 This is a schematic diagram of the positioning component in Embodiment 2 of this application.

[0023] Reference numerals: 11. Main body; 12. Steel body; 121. Test chamber; 13. Water supply and discharge assembly; 2. Sealing assembly; 21. End block; 211. First through hole; 22. Sealing ring; 23. Clamping block; 231. First fixing block; 2311. Third through hole; 232. Second fixing block; 2321. Fourth through hole; 24. Connecting bolt; 25. Positioning block; 3. Feedback mechanism; 31. First connecting pipe; 32. Feedback tank; 33. Water level sensor; 4. Exhaust assembly; 41. Second connecting pipe; 42. First switching valve; 43. Transparent U-shaped pipe; 34. Third connecting pipe; 45. Second switching valve; 5. Reinforcing mechanism; 51. Support frame; 52. First reinforcing block; 521. First adjusting block; 522. Second adjusting block; 53. Second reinforcing block; 54. Reinforcing bolt; 55. Connecting ring; 6. Positioning assembly; 61. Positioning rod; 62. Spring; 7. Fixing assembly; 71. Fixing bolt; 72. Fixing nut. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0025] This application discloses a cable water permeability testing device.

[0026] Example 1 refer to Figure 1 A cable water permeability test device includes a main body 11, a steel body 12 fixedly connected to the main body 11, a sealing component 2, a feedback mechanism 3 and an exhaust component 4 provided on the steel body 12; and a water supply and discharge component 13 connected to the steel body 12 is provided on the main body 11.

[0027] refer to Figure 2 and Figure 3 A test cavity 121 is formed on the steel body 12. The sealing assembly 2 includes an end block 21 fixedly connected to the steel body 12, and an end block 21 is fixed at both ends of the steel body 12. The end block 21 can block the test cavity 121 on the steel body 12. A first through hole 211 communicating with the test cavity 121 on the end block 21 is provided, and the cable passes through the first through hole 211. A placement groove communicating with the first through hole 211 is provided on the side of the end block 21 away from the steel body 12. A sealing ring 22 is placed in the placement groove, and the inner side wall of the sealing ring 22 abuts against the side wall of the cable.

[0028] A clamping block 23 is provided on the side of the end block 21 away from the steel body 12. The clamping block 23 includes a first fixing block 231, on which a third through hole 2311 is formed. A second fixing block 232 is integrally formed on the side of the first fixing block 231 closer to the steel body 12. The second fixing block 232 has a fourth through hole 2321 that communicates with the third through hole 2311 on the first fixing block 231. The third through hole 2311 on the first fixing block 231 and the fourth through hole 2321 on the second fixing block 232 form a second through hole for the cable to pass through. When the second fixing block 232 abuts against the sealing ring 22, the second through hole communicates with the first through hole 211. The vertical cross-section of the second fixing block 232 is smaller than that of the first fixing block 231. The end of the second fixing block 232 away from the first fixing block 231 can enter the placement groove of the end block 21 and abut against the sealing ring 22.

[0029] The first fixing block 231 has a fifth through hole, and the end block 21 has a first threaded hole. The first fixing block 231 is provided with a connector, which in this embodiment is a connecting bolt 24. The connecting bolt 24 passes through the fifth through hole on the first fixing block 231 and is threadedly connected to the first threaded hole on the end block 21.

[0030] A positioning block 25 is fixedly connected to the side wall of the first fixing block 231 near the second fixing block 232, and a positioning groove is provided on the end block 21 to engage with the positioning block 25.

[0031] When part of the cable is located inside the test chamber 121 and no water is injected into the test chamber 121, the second fixing block 232 does not press against the sealing ring 22, the sealing ring 22 does not deform, and at this time, the connecting bolt 24 remains threadedly connected to the first threaded hole. When it is necessary to test the cable located inside the test chamber 121, the connecting bolt 24 is rotated, increasing the length of the threaded connection between the connecting bolt 24 and the first threaded hole on the end block 21. This causes the second fixing block 232 to press against the sealing ring 22, which then deforms. The deformed sealing ring 22 presses against the side wall of the cable, thereby achieving a sealing effect and reducing water leakage in the test chamber 121.

[0032] refer to Figure 1 The water supply and discharge assembly 13 includes a water storage tank fixedly connected to the main body 11. A fourth connecting pipe is connected to the water storage tank. A fifth connecting pipe and a sixth connecting pipe are connected to the fourth connecting pipe via a three-way valve. A water pump is connected to the fifth connecting pipe, and an electrically controlled valve is connected to the sixth connecting pipe. Both the fifth and sixth connecting pipes are located inside the water storage tank. The end of the fourth connecting pipe away from the water storage tank is connected to the steel body 12 and communicates with the test chamber 121.

[0033] When water needs to be supplied to the test chamber 121 of the steel body 12, the electrically controlled valve is closed to prevent water from flowing through the sixth connecting pipe; and the water pump is started, which transfers water from the storage tank to the fourth connecting pipe through the fifth connecting pipe, and then the fourth connecting pipe transfers the water to the test chamber 121 of the steel body 12. After the test is completed, the water pump is turned off and the electrically controlled valve is opened, allowing the water in the test chamber 121 of the steel body 12 to flow through the fourth connecting pipe into the sixth connecting pipe, and finally into the storage tank.

[0034] refer to Figure 1 and Figure 2 The feedback mechanism 3 includes a first connecting pipe 31 fixedly connected to the steel body 12, which communicates with the test chamber 121 on the steel body 12. A feedback tank 32 is fixedly connected to the end of the first connecting pipe 31 away from the steel body 12. A water level sensor 33 is connected to the feedback tank 32 and is electrically connected to a water pump. A third switching valve is installed on the first connecting pipe 31, and a vent is provided on the feedback tank 32.

[0035] Water in the test chamber 121 inside the steel body 12 enters the feedback tank 32 through the first connecting pipe 31. When the water level sensor 33 detects that the water level in the feedback tank 32 has reached a certain height, the water level sensor 33 controls the water pump to shut off. During testing, the operator can also judge the permeability of the cable by observing whether the water level in the feedback tank 32 drops.

[0036] refer to Figure 1 and Figure 4 The main body 11 is provided with a reinforcing mechanism 5, which includes a connecting ring 55 fixedly connected to the first connecting pipe 31. A support frame 51 is fixedly connected to the main body 11 on one side of the steel body 12. A first reinforcing block 52 is fixedly connected to the support frame 51. A first reinforcing groove is formed at the end of the first reinforcing block 52 away from the support frame 51. The sidewall of the first reinforcing groove can reach the sidewall of the first connecting pipe 31. A first limiting groove is formed on the first reinforcing block 52, which communicates with the first reinforcing groove. A part of the connecting ring 55 is located in the first limiting groove of the first reinforcing block 52. A second reinforcing block 53 is provided at the end of the first reinforcing block 52 away from the support frame 51. A second reinforcing groove is formed at the end of the second reinforcing block 53 near the first reinforcing block 52, which abuts against the sidewall of the first connecting pipe 31. A second limiting groove is formed on the second reinforcing groove. The part of the connecting ring 55 other than that located in the first limiting groove is located in the second limiting groove of the second reinforcing block 53. The second reinforcing block 53 has a sixth through hole, and the first reinforcing block 52 has a second threaded hole. A reinforcing member, which in this embodiment is a reinforcing bolt 54, is provided on the second reinforcing block 53. The reinforcing bolt 54 passes through the sixth through hole on the second reinforcing block 53 and is threadedly connected to the second threaded hole on the first reinforcing block 52. The second reinforcing block 53 abuts against the first reinforcing block 52.

[0037] refer to Figure 1 and Figure 2 An exhaust assembly 4 is provided on the steel body 12. The exhaust assembly 4 includes a second connecting pipe 41 fixedly connected to the steel body 12, which communicates with the test chamber 121 on the steel body 12. A first switching valve 42 is connected to the connecting pipe. A transparent U-shaped tube 43 is connected to the end of the second connecting pipe 41 away from the steel body 12. A third connecting pipe 34 is connected to the lowest end of the transparent U-shaped tube 43, and a second switching valve 45 is connected to the third connecting pipe 34. The transparent U-shaped tube 43 is at a height relative to the main body 11 that is lower than the height of the feedback tank 32 relative to the main body 11.

[0038] When water is injected into the test chamber 121, the first switch valve 42 is opened and the second switch valve 45 is closed. Gas in the test chamber 121 enters the first connecting pipe 31 and the second connecting pipe 41. Gas in the first connecting pipe 31 enters the feedback tank 32 and is discharged through the vent in the feedback tank 32. Gas in the second connecting pipe 41 enters the transparent U-shaped tube 43 and is discharged through the transparent U-shaped tube 43. After all the gas in the test chamber 121 is discharged, water in the test chamber 121 enters the first connecting pipe 31 and the second connecting pipe 41. Water in the first connecting pipe 31 enters the feedback tank 32. Water in the second connecting pipe 41 enters the transparent U-shaped tube 43. When there is a certain level of water in the transparent U-shaped tube 43, the first switch valve 42 is closed, so that water in the test chamber 121 will no longer flow in the second connecting pipe 41. If necessary, the second switch valve 45 can be opened to allow water in the transparent U-shaped tube 43 to be discharged through the third connecting pipe 34 for subsequent testing.

[0039] The implementation principle of Embodiment 1 of this application is as follows: when a part of the cable is located in the test cavity 121 of the steel body 12, the second fixing block 232 is pressed against the sealing ring 22, and the sealing ring 22 is pressed against the side wall of the cable.

[0040] Then, the water pump is started to inject water into the test chamber 121 of the steel body 12. The gas in the test chamber 121 is discharged through the first connecting pipe 31 and the second connecting pipe 41. When the test chamber 121 of the steel body 12 is full of water, the water pump continues to work to inject water into the test chamber 121. The water in the test chamber 121 will enter the first connecting pipe 31 and the second connecting pipe 41. The water in the second connecting pipe 41 will enter the transparent U-shaped pipe 43. When the water level in the transparent U-shaped pipe 43 reaches a certain height, the first switch valve 42 will be closed. In this way, the water in the test chamber 121 can only enter the first connecting pipe 31. The water in the first connecting pipe enters the feedback tank 32. When the water level in the feedback tank 32 reaches a certain height, the water level sensor 33 will control the water pump to shut down.

[0041] Example 2 refer to Figure 5and Figure 6 The difference from Embodiment 1 is that the first reinforcing block 52 includes a first adjusting block 521 fixedly connected to the support frame 51. A groove is provided at the end of the first adjusting block 521 away from the support frame 51. A second adjusting block 522 is slidably connected in the groove. The second threaded hole, the first limiting groove and the first reinforcing groove are all provided at the end of the second adjusting block 522 away from the first adjusting block 521.

[0042] The first adjusting block 521 has a seventh through hole communicating with the groove. The first adjusting block 521 is provided with a positioning component 6, which includes a positioning rod 61 that is slidably connected in the seventh through hole. The second adjusting block 522 has a positioning groove that engages with the positioning rod 61. A spring 62 is sleeved on the positioning rod 61, with one end of the spring 62 connected to the first adjusting block 521 and the other end connected to the positioning rod 61.

[0043] The first adjusting block 521 has an eighth through hole communicating with the groove, and the second adjusting block 522 has a ninth through hole communicating with the eighth through hole. The first adjusting block 521 is provided with a fixing component 7, which includes a fixing bolt 71. The end of the fixing bolt 71 away from its own nut passes through the eighth through hole on the first adjusting block 521 and the ninth through hole on the second adjusting block 522. A fixing nut 72 is threadedly connected to the fixing bolt 71 passing through the eighth through hole and the ninth through hole. Both the nut of the fixing bolt 71 and the fixing nut 72 abut against the first adjusting block 521.

[0044] The implementation principle of Embodiment 2 of this application is as follows: initially, spring 62 is in a stretched state.

[0045] Pull the second adjusting block 522 to slide it within the groove of the first adjusting block 521. When the first reinforcing groove on the second adjusting block 522 abuts against the side wall of the first connecting pipe 31 and a portion of the connecting ring 55 is located within the first limiting groove of the second adjusting block 522, the positioning rod 61 aligns with the positioning groove on the second adjusting block 522. The spring 62, which is in a stretched state, will restore its elastic deformation. The elastic force of the spring 62 will drive the positioning rod 61 to move towards the second adjusting block 522, so that the positioning rod 61 engages with the positioning groove on the second adjusting block 522.

[0046] When the positioning rod 61 engages with the positioning groove on the second adjusting block 522, the axis of the eighth through hole on the first adjusting block 521 coincides with the axis of the ninth through hole on the second adjusting block 522. Then, the end of the fixing bolt 71 away from its own nut passes through the eighth through hole on the first adjusting block 521 and the ninth through hole on the second adjusting block 522. The fixing nut 72 is threadedly connected to the fixing bolt 71 passing through the eighth and ninth through holes, and both the nut of the fixing bolt 71 and the fixing nut 72 abut against the first adjusting block 521.

[0047] Next, the second reinforcing block 53 abuts against the end of the second adjusting block 522 away from the first adjusting block 521. Then, the reinforcing bolt 54 passes through the sixth through hole on the second reinforcing block 53 and is threadedly connected to the second threaded hole on the second adjusting block 522. In this way, the side wall of the second reinforcing groove on the second reinforcing block 53 abuts against the side wall of the first connecting pipe 31, and a part of the connecting ring 55 is located in the second limiting groove of the second reinforcing block 53. The second adjusting block 522 and the second reinforcing block 53 clamp the first connecting pipe 31.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cable permeability testing device, comprising a main body (11), a steel body (12), a sealing assembly (2), and a water supply and discharge assembly (13), wherein the steel body (12) is disposed on the main body (11), and a test cavity (121) is formed on the steel body (12); the sealing assembly (2) is disposed on the steel body (12), and the sealing assembly (2) and the cable jointly seal the test cavity (121); the water supply and discharge assembly (13) is disposed on the main body (11) and communicates with the test cavity (121), characterized in that, It also includes a feedback mechanism (3), which includes a first connecting pipe (31), a feedback tank (32) and a water level sensor (33). The first connecting pipe (31) is disposed on the steel body (12) and communicates with the test chamber (121). The feedback tank (32) is disposed on the first connecting pipe (31). The water level sensor (33) is disposed on the feedback tank (32) and is connected to the water supply and discharge assembly (13).

2. The cable water permeability testing device according to claim 1, characterized in that, The sealing assembly (2) includes an end block (21), a sealing ring (22), a clamping block (23), and a connector. The end block (21) is disposed on the steel body (12) and blocks the test chamber (121). The end block (21) has a first through hole (211) communicating with the test chamber (121) and a placement groove communicating with the first through hole (211). The sealing ring (22) is disposed in the placement groove. The clamping block (23) is disposed on the end block (21) through the connector and abuts against the sealing ring (22). The clamping block (23) has a second through hole communicating with the first through hole (211).

3. The cable water permeability testing device according to claim 2, characterized in that, The clamping block (23) includes a first fixing block (231) and a second fixing block (232). The first fixing block (231) is connected to the end block (21) through the connector. A third through hole (2311) is provided on the first fixing block (231). The second fixing block (232) is disposed on the first fixing block (231). A fourth through hole (2321) is provided on the second fixing block (2321). The fourth through hole (2321) and the third through hole (2311) form the second through hole. The second fixing block (232) abuts against the sealing ring (22).

4. The cable water permeability testing device according to claim 2, characterized in that, The clamping block (23) is provided with a positioning block (25), and the end block (21) is provided with a positioning groove that engages with the positioning block (25); the connecting member includes a connecting bolt (24), the clamping block (23) is provided with a fifth through hole, the end block (21) is provided with a first threaded hole, and the connecting bolt (24) passes through the fifth through hole and is threadedly connected to the first threaded hole.

5. The cable permeability testing device according to claim 1, characterized in that, An exhaust assembly (4) is provided on the steel body (12). The exhaust assembly (4) includes a second connecting pipe (41) and a first switching valve (42). The second connecting pipe (41) is provided on the steel body (12) and communicates with the test chamber (121). The first switching valve (42) is provided on the second connecting pipe (41).

6. The cable permeability testing device according to claim 5, characterized in that, A transparent U-shaped tube (43) is provided on the second connecting pipe (41), and a third connecting pipe (34) is provided at the lowest end of the transparent U-shaped tube (43), and a second switching valve (45) is provided on the third connecting pipe (34).

7. The cable permeability testing device according to claim 1, characterized in that, The main body (11) is provided with a reinforcement mechanism (5). The reinforcement mechanism (5) includes a support frame (51), a first reinforcement block (52), a second reinforcement block (53), and a reinforcement member. The support frame (51) is provided on the main body (11). The first reinforcement block (52) is provided on the support frame (51). The first reinforcement block (52) has a first reinforcement groove that abuts against the first connecting pipe (31). The second reinforcement block (53) is provided on the first reinforcement block (52) through the reinforcement member. The second reinforcement block (53) has a second reinforcement groove that abuts against the first connecting pipe (31).

8. The cable permeability testing device according to claim 7, characterized in that, A connecting ring (55) is provided on the first connecting pipe (31), a first limiting groove communicating with the first reinforcing groove is provided on the first reinforcing block (52), and a second limiting groove communicating with the second reinforcing groove is provided on the second reinforcing block (53). A part of the connecting ring (55) is located in the first limiting groove and another part is located in the second limiting groove.

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