Detection device for high-voltage power cable test

Abstract

The invention discloses a detection device for a high-voltage power cable test, and the device comprises a supporting table, the upper end of the supporting table is fixedly connected with a detection box, the left and right sides of the detection box are provided with through holes, the inner bottom of the detection box is fixedly connected with a fixed plate, and the fixed plate is horizontally provided with a rotating cylinder in a penetrating manner. The rotating cylinder is rotationally connected with the fixed plate through a bearing, a plurality of visual detection heads are arranged on the inner side of the rotating cylinder, and annular lamps are fixedly connected to the left side wall and the right side wall of the detection box. And the rotating mechanism is used for driving the rotating cylinder to rotate in a reciprocating mode, a mounting plate is fixedly connected to the upper end of the detection box, and a double-shaft motor is mounted on the left side of the mounting plate. In the actual use process, the device can carry out comprehensive visual inspection on the surface of the cable, in addition, before detection, the surface of the cable can be cleaned, dust and oil dirt which possibly exist can be removed, and the actual detection result is improved.

Description

Technical Field

[0001] The present invention relates to the field of cable detection, and in particular to a detection device for high-voltage power cable testing. Background Art

[0002] In the operation and maintenance of high-voltage power cables, testing and inspection are key steps in ensuring their safe and stable operation. Inspection of the cable surface is particularly important. Cracks, damage, corrosion, and other defects on the cable surface can directly affect its insulation performance and mechanical strength. If not discovered and addressed promptly, they can lead to serious accidents such as leakage, short circuits, and even fires, posing a significant threat to the power system and personnel safety.

[0003] The existing detection function lacks a cleaning process for the cable surface. If dust and oil stains on the cable surface are not effectively removed before actual detection, the image information obtained by the detection device will be disturbed, resulting in inaccurate detection results and unable to provide a reliable basis for cable maintenance and repair.

[0004] In addition, during the inspection process, the visual inspection heads of the inspection part are in a fixed state, making it difficult to fully inspect the cable surface. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a detection device for high-voltage power cable testing. During actual use, the device can perform a comprehensive visual inspection of the cable surface. In addition, before the inspection, the cable surface can be cleaned to remove possible dust and oil stains, thereby improving the actual inspection results.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A detection device for high-voltage power cable testing includes a support platform, an inspection box is fixedly connected to the upper end of the support platform, through openings are opened on the left and right sides of the inspection box, a fixed plate is fixedly connected to the inner bottom of the inspection box, a rotating cylinder is horizontally penetrated on the fixed plate, the rotating cylinder and the fixed plate are rotatably connected by bearings, a plurality of visual detection heads are provided on the inner side of the rotating cylinder, and ring lights are fixedly connected to the left and right side walls of the inspection box; a rotating mechanism, the rotating mechanism is used to drive the rotating cylinder to rotate reciprocally, the upper end of the inspection box is fixedly connected to the mounting plate, the left side of the mounting plate A double-axis motor is installed on the side, and the right end output shaft of the double-axis motor is fixedly connected to a connecting disk, the upper end of the detection box is fixedly connected to a frame, the upper end of the frame is fixedly connected to a first piston cylinder, and a first piston plate that can slide up and down is provided in the first piston cylinder, and a connecting rod is rotatably connected to the eccentric part of the right side of the connecting disk, and the other end of the connecting rod is fixedly connected to the lower end of the first piston plate, and the lower end of the first piston plate is fixedly connected to a rack, and a gear is fixedly connected to the outer side of the rotating cylinder, and the rack is engaged with the gear; a cleaning mechanism, which is used to clean the cable before detection.

[0008] Preferably, the cleaning mechanism includes a first vertical plate fixedly connected to the upper end of the support platform, a rotating tube is horizontally provided on the first vertical plate, the rotating tube is rotatably connected to the first vertical plate through a bearing, and a plurality of bristles are fixedly connected to the inner side of the rotating tube.

[0009] Preferably, a second vertical plate is fixedly connected to the upper end of the support platform, and synchronous wheels are installed on the left end output shaft and the rotating tube of the dual-axis motor, and the two synchronous wheels are connected by a synchronous belt transmission.

[0010] Preferably, the upper end of the second vertical plate is fixedly connected to a support plate, and the left end output shaft of the dual-axis motor passes through the support plate and is rotatably connected via a bearing.

[0011] Preferably, a fixed tube is horizontally provided on the second vertical plate, the fixed tube is fixedly connected to the second vertical plate, the rotating tube is located on the inner side of the fixed tube and contacts the inner wall of the fixed tube, the inner side of the fixed tube is fixedly connected with a first hollow ring and a second hollow ring, the inner side of the first hollow ring is provided with a first annular groove, and the inner side of the second hollow ring is provided with a second annular groove.

[0012] Preferably, the rear side of the detection box is fixedly connected to a high-pressure box, the upper end of the first piston cylinder is fixedly connected to the second piston cylinder, the second piston cylinder is communicated with the first piston cylinder, a second piston plate that can slide up and down is provided in the second piston cylinder, the first piston plate and the second piston plate are fixedly connected by a fixing rod, the inner top space of the first piston cylinder is communicated with the outside world through the air inlet hole, the inner top space of the first piston cylinder is communicated with the high-pressure box through the exhaust pipe, the left side of the high-pressure box is connected with a vortex tube, the air inlet end of the vortex tube is installed with a pressure relief valve, and the hot air end of the vortex tube is communicated with the first hollow ring through the hot air pipe.

[0013] Preferably, the inner top space of the second piston cylinder is connected with a liquid inlet pipe, and the inner top space of the second piston cylinder is connected with the second hollow ring through a liquid discharge pipe.

[0014] Preferably, one-way valves are installed inside the air inlet hole, exhaust pipe, liquid inlet pipe and liquid discharge pipe. The one-way valve inside the air inlet hole flows in a one-way direction from the outside into the first piston cylinder, the one-way valve inside the exhaust pipe flows in a one-way direction from the first piston cylinder into the high-pressure box, the one-way valve inside the liquid inlet pipe flows in a one-way direction from the outside into the second piston cylinder, and the one-way valve inside the liquid discharge pipe flows in a one-way direction from the second piston cylinder into the second hollow ring.

[0015] Preferably, a waste liquid collection box is fixedly connected to the lower end of the support platform, and the inner bottom space of the waste liquid collection box is connected to the outside through a discharge pipe. A manual valve is installed at the discharge pipe, and the inner bottom space of the fixed pipe is connected to the waste liquid collection box through a vertical pipe.

[0016] Preferably, a third hollow ring is fixedly connected to the left side of the detection box, a third annular groove is provided on the inner side of the third hollow ring, the cold air end of the vortex tube is connected to a cold air pipe, and the other end of the cold air pipe is connected to the third hollow ring.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The dual-axis motor is driven by the synchronous wheel and the synchronous belt to rotate the brush inside the rotating tube, effectively brushing off the dust on the surface of the cable, providing a clean basis for subsequent inspections, avoiding dust interference, and ensuring the accuracy of the inspection results.

[0019] 2. The dual-axis motor drives the generated gas to be injected into the high-pressure box, and the vortex tube generates high-temperature airflow to heat the cable, reducing the viscosity of the oil. The hot air blows away the dust and dries the water, preventing secondary pollution and water stains, and improving the quality of the testing environment.

[0020] 3. The second piston plate reciprocates to extract water from the water tank to clean the cable. The cable is initially dried with hot air and further dried with cold air to ensure that the cable is dry and clean, and to prevent water and temperature from affecting the detection effect.

[0021] 4. The first piston plate drives the rack to make the rotating cylinder rotate back and forth, and the visual inspection head rotates forward and reverse accordingly. The uniform lighting environment created by the ring light increases the detection range and improves the comprehensiveness and accuracy of cable detection.

[0022] 5. The waste liquid in the fixed tube flows into the waste liquid collection box through the vertical pipe. The waste liquid can be discharged conveniently through the discharge pipe and manual valve, keeping the equipment clean, reducing the potential impact of the waste liquid on the testing environment and equipment, and facilitating equipment maintenance and management.

[0023] In summary, when the device is used, it can conduct a comprehensive inspection of the cable, and the comprehensiveness of the inspection is effectively improved. In addition, the cable can be cleaned and pre-treated before the inspection, which further improves the accuracy of the inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a detection device for high-voltage power cable testing proposed by the present invention;

[0025] Figure 2 for Figure 1 Schematic cross-sectional view of ;

[0026] Figure 3 for Figure 2 A magnified view of point A;

[0027] Figure 4 for Figure 2 Enlarged view of point B;

[0028] Figure 5 for Figure 1 Schematic diagram of the rear side;

[0029] Figure 6 for Figure 5 Schematic cross-sectional view of ;

[0030] Figure 7 for Figure 6 An enlarged view of the first and second piston cylinders.

[0031] In the figure: 1 support platform, 2 detection box, 3 waste liquid collection box, 4 first vertical plate, 5 second vertical plate, 6 rotating tube, 7 synchronous wheel, 8 synchronous belt, 9 mounting plate, 10 dual-axis motor, 11 support plate, 12 first piston cylinder, 13 second piston cylinder, 14 liquid inlet pipe, 15 liquid discharge pipe, 16 exhaust pipe, 17 air inlet hole, 18 fixed tube, 19 annular light, 20 opening, 21 first hollow ring, 22 second hollow ring, 23 third hollow ring, 24 first annular groove, 25 second annular groove, 26 third annular groove, 27 fixed plate, 28 rotating cylinder, 29 visual inspection head, 30 gear, 31 rack, 32 high-pressure box, 33 vortex tube, 34 pressure relief valve, 35 hot air pipe, 36 cold air pipe, 37 second piston plate, 38 fixed rod, 39 first piston plate, 40 connecting rod, 41 connecting disk, 42 ​​brush bristles. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] Reference Figure 1-Figure 7 A detection device for high-voltage power cable testing includes a support platform 1, an inspection box 2 is fixedly connected to the upper end of the support platform 1, and openings 20 are opened on the left and right sides of the inspection box 2. A fixed plate 27 is fixedly connected to the inner bottom of the inspection box 2, and a rotating cylinder 28 is horizontally penetrated on the fixed plate 27. The rotating cylinder 28 is rotatably connected to the fixed plate 27 through a bearing. A plurality of visual inspection heads 29 are arranged on the inner side of the rotating cylinder 28, and ring lights 19 are fixedly connected to the left and right side walls of the inspection box 2. Through the ring lights 19 and the inspection box 2, a relatively sealed and uniform light detection environment can be created to ensure the detection effect.

[0034] As an embodiment of the present invention, it also includes a rotating mechanism, which is used to drive the rotating cylinder 28 to rotate back and forth. The upper end of the detection box 2 is fixedly connected to the mounting plate 9, and a dual-axis motor 10 is installed on the left side of the mounting plate 9. The right end output shaft of the dual-axis motor 10 is fixedly connected to the connecting disk 41. The upper end of the detection box 2 is fixedly connected to the frame, and the upper end of the frame is fixedly connected to the first piston cylinder 12. A first piston plate 39 that can slide up and down is provided in the first piston cylinder 12. A connecting rod 40 is rotatably connected to the eccentric position on the right side of the connecting disk 41. The other end of the connecting rod 40 is fixedly connected to the lower end of the first piston plate 39. The lower end of 39 is fixedly connected with a rack 31, and the outer side of the rotating cylinder 28 is fixedly connected with a gear 30. The rack 31 is engaged with the gear 30. By using the rotating mechanism, the rotating cylinder 28 can be rotated forward and backward, thereby increasing the detection range of the visual inspection head 29 and improving the comprehensiveness of cable detection. In specific use, the cable is unwound through the unwinding end, and passes through the rotating tube 6, the fixed tube 18, the third hollow ring 23, the left side opening 20, the inspection box 2, the right side opening 20 in turn, and then is reeled in by the reeling end. The unwinding end and the reeling end both use existing unwinding devices and reeling devices. After the two are started, the cable can be moved.

[0035] As an embodiment of the present invention, it also includes a cleaning mechanism, which is used to clean the cable before inspection. The cleaning mechanism includes a first vertical plate 4 fixedly connected to the upper end of the support platform 1, and a rotating tube 6 is horizontally provided on the first vertical plate 4. The rotating tube 6 is rotatably connected to the first vertical plate 4 through a bearing. A plurality of bristles 42 are fixedly connected to the inner side of the rotating tube 6. The upper end of the support platform 1 is fixedly connected to the second vertical plate 5. The left end output shaft of the dual-axis motor 10 and the rotating tube 6 are both equipped with a synchronous wheel 7. The two synchronous wheels 7 are connected by a synchronous belt 8. The upper end of the second vertical plate 5 is fixedly connected to the support plate 11. The left end output shaft of the dual-axis motor 10 passes through the support plate 11 and is rotatably connected by a bearing. When the dual-axis motor 10 rotates, the rotating tube 6 can be rotated by the transmission of the synchronous wheel 7 and the synchronous belt 8, so that the inner bristles 42 can be rotated to brush the surface of the cable to clean it, and some floating dust can be brushed off.

[0036] As an embodiment of the present invention, a fixed tube 18 is horizontally provided on the second vertical plate 5, and the fixed tube 18 is fixedly connected to the second vertical plate 5. The rotating tube 6 is located on the inner side of the fixed tube 18 and contacts the inner wall of the fixed tube 18. The inner side of the fixed tube 18 is fixedly connected to the first hollow ring 21 and the second hollow ring 22. The first hollow ring 21 has a first annular groove 24 formed on the inner side, and the second hollow ring 22 has a second annular groove 25 formed on the inner side. The rear side of the detection box 2 is fixedly connected to the high-pressure box 32, and the upper end of the first piston cylinder 12 is fixedly connected to the second piston cylinder 13, and the second piston cylinder 13 is connected to the first piston cylinder. The cylinder 12 is connected, and the inner diameter of the second piston cylinder 13 is smaller than the inner diameter of the first piston cylinder 12, so as to ensure that when the second piston plate 37 and the first piston plate 39 move up synchronously, the overall air pressure in the space between the two is increased. The same applies to the downward movement. The specific size ratio can be selected according to needs. A second piston plate 37 that can slide up and down is provided in the second piston cylinder 13, and the first piston plate 39 and the second piston plate 37 are fixedly connected by a fixing rod 38. The inner top space of the first piston cylinder 12 is connected to the outside world through the air inlet hole 17, and the inner top space of the first piston cylinder 12 is connected to the high-pressure box 32 through the exhaust pipe 16.

[0037] As an embodiment of the present invention, when the first piston plate 39 reciprocates up and down, a one-way gas flow between the outside, the first piston cylinder 12 and the high-pressure box 32 can be generated, thereby injecting gas into the high-pressure box 32, causing the gas in the high-pressure box 32 to be compressed. In the initial state, the high-pressure box 32 is in a high-pressure state and is located at the pressure relief critical value of the pressure relief valve 34. When gas is injected again, the internal air pressure increases and the high-pressure gas will be released. The left side of the high-pressure box 32 is connected to a vortex tube 33. When the vortex tube 33 is flushed with high-pressure airflow, its hot end will generate high-temperature airflow and the cold end will generate low-temperature airflow. The vortex tube 33 A pressure relief valve 34 is installed at the air inlet end, and the hot air end of the vortex tube 33 is connected to the first hollow ring 21 through the hot air pipe 35. After the hot air is sprayed out from the hollow ring 21, the surface of the cable will be heated to reduce the viscosity of the oil that may adhere to it, thereby facilitating the subsequent water flushing operation. After the hot air is sprayed out from the first hollow ring 21, a part of it moves to the left and is discharged from the left side of the rotating tube 6. This part of the airflow can blow the dust brushed off by the bristles 42 to the outside to avoid secondary adhesion of the dust. The other part of the airflow is discharged from the right side of the fixed tube 18, and this part of the airflow can dry the water attached to the cable by cleaning.

[0038] As an embodiment of the present invention, the inner top space of the second piston cylinder 13 is connected with an inlet pipe 14, the other end of the inlet pipe 14 is connected with an external water tank, and the inner top space of the second piston cylinder 13 is connected with the second hollow ring 22 through the discharge pipe 15. When the second piston plate 37 reciprocates up and down, the water in the water tank will be drawn in, and then finally sprayed out from the second annular groove 25. It should be noted here that the water tank can be filled with a high-temperature cleaning agent for cleaning oil to further improve the cleaning effect. One-way valves are installed inside the air inlet hole 17, the exhaust pipe 16, the inlet pipe 14 and the discharge pipe 15. The one-way valve inside the air inlet hole 17 flows in a one-way direction from the outside to the first piston cylinder 12, the one-way valve inside the exhaust pipe 16 flows in a one-way direction from the first piston cylinder 12 to the high-pressure tank 32, the one-way valve inside the inlet pipe 14 flows in a one-way direction from the outside to the second piston cylinder 13, and the one-way valve inside the discharge pipe 15 flows in a one-way direction from the second piston cylinder 13 to the second hollow ring 22.

[0039] As an embodiment of the present invention, a waste liquid collection box 3 is fixedly connected to the lower end of the support platform 1, and the inner bottom space of the waste liquid collection box 3 is connected to the outside through a discharge pipe. A manual valve is installed at the discharge pipe, and the inner bottom space of the fixed pipe 18 is connected to the waste liquid collection box 3 through a vertical pipe.

[0040] As an embodiment of the present invention, a third hollow ring 23 is fixedly connected to the left side of the detection box 2, and a third annular groove 26 is provided on the inner side of the third hollow ring 23. The cold air end of the vortex tube 33 is connected to the cold air pipe 36, and the other end of the cold air pipe 36 is connected to the third hollow ring 23. The cold air discharged from the third hollow ring 23 can further dry the cable to ensure its dryness and avoid surface water affecting the detection effect. The cold air can also cool the surface of the cable to avoid the high residual temperature after heating and cleaning and affecting subsequent detection.

[0041] In the present invention, the cable is unwound through the unwinding end, passes through the rotating tube 6, the fixed tube 18, the third hollow ring 23, the left through-hole 20, the detection box 2, the right through-hole 20 in sequence, and finally is reeled in by the reeling end. The unwinding end and the reeling end adopt the existing unwinding and reeling devices. When both are started, the cable starts to move. The dual-axis motor 10 is started, and its left end output shaft rotates. The transmission of the synchronous wheel 7 and the synchronous belt 8 drives the rotating tube 6 to rotate. The bristles 42 on the inside of the rotating tube 6 rotate accordingly, brushing the surface of the cable passing through the rotating tube 6 to brush off the floating dust and ensure the subsequent detection effect. The output shaft at the right end of the dual-axis motor 10 drives the connecting disk 4 1 rotates, and the connecting rod 40 connected to the eccentric part of the right side of the connecting plate 41 drives the first piston plate 39 to reciprocate up and down in the first piston cylinder 12. The first piston plate 39 and the second piston plate 37 are fixedly connected by the fixing rod 38, and the two move synchronously. The one-way valves in the air inlet 17 and the exhaust pipe 16 respectively control the one-way entry of the external gas into the first piston cylinder 12 and the one-way entry of the gas in the first piston cylinder 12 into the high-pressure box 32, so that the external gas is injected into the high-pressure box 32 through the first piston cylinder 12. The high-pressure box 32 is initially at a high pressure and reaches the pressure relief critical value of the pressure relief valve 34. After the gas is injected again, the internal pressure increases and the high-pressure gas is released.

[0042] High-pressure gas enters the vortex tube 33, and its hot end generates high-temperature airflow. The hot air end is connected to the first hollow ring 21 through the hot air pipe 35. The high-temperature airflow is ejected from the first annular groove 24 of the first hollow ring 21, heating the cable surface and reducing the viscosity of the oil that may adhere to it. A portion of the hot air discharged from the first hollow ring 21 is discharged to the left from the left side of the rotating tube 6, blowing away the dust brushed off by the bristles 42 to prevent secondary adhesion of dust.

[0043] The one-way valves in the liquid inlet pipe 14 and the liquid discharge pipe 15 respectively control the one-way entry of external water into the second piston cylinder 13 and the one-way entry of water in the second piston cylinder 13 into the second hollow ring 22. The second piston plate 37 reciprocates up and down, and the water in the water tank (which can be filled with high-temperature cleaning agent for cleaning oil) is drawn into the second piston cylinder 13, and then sprayed out from the second annular groove 25 of the second hollow ring 22 to clean the cable. A part of the hot air discharged from the first hollow ring 21 is discharged from the right side of the fixed pipe 18, which can dry the water attached to the cable and ensure the dryness of its surface.

[0044] The cold air end of the vortex tube 33 is connected to the third hollow ring 23 through the cold air pipe 36. The cold air is discharged from the third annular groove 26 of the third hollow ring 23 to further dry the cable, ensuring the dryness of the cable and preventing surface water from affecting the detection effect. At the same time, the cable surface is cooled to prevent excessive residual temperature from affecting subsequent detection.

[0045] The reciprocating motion of the first piston plate 39 also drives the rack 31 to move up and down. The rack 31 meshes with the gear 30 on the outside of the rotating cylinder 28, driving the rotating cylinder 28 to rotate back and forth. The multiple visual inspection heads 29 inside the rotating cylinder 28 rotate forward and reverse accordingly. The ring lights 19 on the left and right side walls of the inspection box 2 create a relatively sealed and uniform light inspection environment. The visual inspection heads 29 inspect the cables passing through the inspection box 2, thereby increasing the inspection range and improving the comprehensiveness of the cable inspection.

[0046] The bottom space inside the fixed tube 18 is connected to the waste liquid collection box 3 through a vertical pipe. The waste liquid after cleaning the cable flows into the waste liquid collection box 3. The bottom space inside the waste liquid collection box 3 is connected to the outside through a discharge pipe. A manual valve is installed at the discharge pipe, and the waste liquid can be discharged through the manual valve.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A detection device for high-voltage power cable testing, characterized in that: include: A support platform (1), wherein the upper end of the support platform (1) is fixedly connected to a detection box (2), the left and right sides of the detection box (2) are both provided with openings (20), the inner bottom of the detection box (2) is fixedly connected to a fixed plate (27), a rotating cylinder (28) is horizontally penetrated on the fixed plate (27), the rotating cylinder (28) and the fixed plate (27) are rotatably connected via a bearing, a plurality of visual detection heads (29) are provided on the inner side of the rotating cylinder (28), and ring lights (19) are fixedly connected to the left and right side walls of the detection box (2); A rotating mechanism, wherein the rotating mechanism is used to drive the rotating cylinder (28) to rotate back and forth, the upper end of the detection box (2) is fixedly connected to a mounting plate (9), a double-axis motor (10) is installed on the left side of the mounting plate (9), and the right end output shaft of the double-axis motor (10) is fixedly connected to a connecting disk (41), the upper end of the detection box (2) is fixedly connected to a frame, the upper end of the frame is fixedly connected to a first piston cylinder (12), a first piston plate (39) that can slide up and down is provided in the first piston cylinder (12), a connecting rod (40) is rotatably connected to the right eccentric position of the connecting disk (41), the other end of the connecting rod (40) is fixedly connected to the lower end of the first piston plate (39), the lower end of the first piston plate (39) is fixedly connected to a rack (31), the outer side of the rotating cylinder (28) is fixedly connected to a gear (30), and the rack (31) is meshed with the gear (30); A cleaning mechanism is used to clean the cable before testing.

2. A detection device for high-voltage power cable testing according to claim 1, characterized in that: The cleaning mechanism comprises a first vertical plate (4) fixedly connected to the upper end of the support platform (1); a rotating tube (6) is horizontally provided through the first vertical plate (4); the rotating tube (6) is rotatably connected to the first vertical plate (4) via a bearing; and a plurality of bristles (42) are fixedly connected to the inner side of the rotating tube (6).

3. A detection device for high-voltage power cable testing according to claim 1, characterized in that: The upper end of the support platform (1) is fixedly connected to a second vertical plate (5), and the left end output shaft of the dual-axis motor (10) and the rotating tube (6) are both installed with synchronous wheels (7), and the two synchronous wheels (7) are connected by a synchronous belt (8).

4. A detection device for high-voltage power cable testing according to claim 1, characterized in that: The upper end of the second vertical plate (5) is fixedly connected to a support plate (11), and the left end output shaft of the dual-axis motor (10) passes through the support plate (11) and is rotatably connected via a bearing.

5. A detection device for high-voltage power cable testing according to claim 1, characterized in that: A fixed tube (18) is horizontally provided on the second vertical plate (5), and the fixed tube (18) is fixedly connected to the second vertical plate (5). The rotating tube (6) is located on the inner side of the fixed tube (18) and contacts the inner wall of the fixed tube (18). A first hollow ring (21) and a second hollow ring (22) are fixedly connected to the inner side of the fixed tube (18). A first annular groove (24) is provided on the inner side of the first hollow ring (21), and a second annular groove (25) is provided on the inner side of the second hollow ring (22).

6. A detection device for high-voltage power cable testing according to claim 1, characterized in that: The rear side of the detection box (2) is fixedly connected to a high-pressure box (32), the upper end of the first piston cylinder (12) is fixedly connected to a second piston cylinder (13), the second piston cylinder (13) is communicated with the first piston cylinder (12), a second piston plate (37) that can slide up and down is provided in the second piston cylinder (13), the first piston plate (39) and the second piston plate (37) are fixedly connected by a fixing rod (38), the inner top space of the first piston cylinder (12) is communicated with the outside through the air inlet hole (17), the inner top space of the first piston cylinder (12) is communicated with the high-pressure box (32) through the exhaust pipe (16), the left side of the high-pressure box (32) is connected to a vortex tube (33), the air inlet end of the vortex tube (33) is installed with a pressure relief valve (34), and the hot air end of the vortex tube (33) is communicated with the first hollow ring (21) through the hot air pipe (35).

7. A detection device for high-voltage power cable testing according to claim 1, characterized in that: The inner top space of the second piston cylinder (13) is connected to a liquid inlet pipe (14), and the inner top space of the second piston cylinder (13) is connected to the second hollow ring (22) through a liquid discharge pipe (15).

8. A detection device for high-voltage power cable testing according to claim 1, characterized in that: One-way valves are installed inside the air inlet (17), the exhaust pipe (16), the liquid inlet pipe (14) and the liquid discharge pipe (15). The one-way valve inside the air inlet (17) flows in a one-way direction from the outside into the first piston cylinder (12), the one-way valve inside the exhaust pipe (16) flows in a one-way direction from the first piston cylinder (12) into the high-pressure box (32), the one-way valve inside the liquid inlet pipe (14) flows in a one-way direction from the outside into the second piston cylinder (13), and the one-way valve inside the liquid discharge pipe (15) flows in a one-way direction from the second piston cylinder (13) into the second hollow ring (22).

9. A detection device for high-voltage power cable testing according to claim 1, characterized in that: The lower end of the support platform (1) is fixedly connected to a waste liquid collection box (3); the inner bottom space of the waste liquid collection box (3) is connected to the outside through a discharge pipe; a manual valve is installed at the discharge pipe; the inner bottom space of the fixed pipe (18) is connected to the waste liquid collection box (3) through a vertical pipe.

10. A detection device for high-voltage power cable testing according to claim 1, characterized in that: A third hollow ring (23) is fixedly connected to the left side of the detection box (2), a third annular groove (26) is provided on the inner side of the third hollow ring (23), the cold air end of the vortex tube (33) is connected to a cold air pipe (36), and the other end of the cold air pipe (36) is connected to the third hollow ring (23).

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