Internal defect positioning device for GIS (Gas Insulated Switchgear) equipment

Abstract

The invention relates to the technical field of GIS equipment, and discloses a GIS equipment internal defect positioning device which comprises a detection sensor, the front end of the detection sensor is fixedly connected with a transmission line, the front end of the transmission line is fixedly connected with a comprehensive diagnosis device, a lower guide rail is arranged below the detection sensor, and the lower guide rail is fixedly connected with the comprehensive diagnosis device. According to the GIS equipment defect detection device, the detection sensor can monitor and collect changes of temperature, vibration, ultrasonic waves and electromagnetic waves of GIS equipment and transmit signals to the comprehensive diagnosis device through the transmission line for analysis and diagnosis, so that defects generated in the GIS equipment are detected; the I-shaped upper sliding block and the I-shaped lower sliding block clamp the detection sensors, so that the multiple groups of detection sensors can be attached to the GIS equipment at the same time and perform data acquisition on different parts of the equipment, and the specific part of the internal defect of the GIS equipment can be positioned according to the signal change intensity of the different parts of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of GIS equipment, and in particular to a device for locating internal defects of GIS equipment. Background Art

[0002] GIS equipment is an insulating switchgear used in high-voltage power systems and is filled with insulating gas, such as sulfur hexafluoride. GIS equipment may have defects such as partial discharge, mechanical failure, insulation degradation, poor contact, and abnormal temperature during use. If these defects are not discovered early, it is easy to cause serious equipment failure and inability to use normally. The defect locating device can quickly detect these defects and determine the location of the defects to avoid equipment failure. In the prior art, sensors with different functions are usually used to detect equipment defects. However, it is difficult to adjust multiple sensors at the same time, and the operation is not convenient enough, which can easily affect the timeliness of detection and reduce the detection accuracy.

[0003] The patent with announcement number CN211528288U discloses a detection device for monitoring the position of GIS defects based on an acoustic array sensor. The patent is used to be mounted on the GIS equipment to form an array to perform acoustic wave detection on the internal structure to feedback the existing defects. The patent includes a data collector and an annular fixing member mounted on the surface of the GIS equipment. The annular fixing member is provided with multiple acoustic vibration sensors. The acoustic vibration sensors detect defects and summarize the data to the data collector for feedback. According to the acoustic wave generators at multiple points, the multiple voiceprint information fed back by the detected equipment is matched, the background noise and self-noise are eliminated, and then the final summary voiceprint information is filtered and synthesized, and sent to the background server. Comparison and analysis are performed with the voiceprint information corresponding to the stored multiple defect conditions. If the similarity is higher than the threshold, it is judged that a certain defect may occur and maintenance is required. Although the patent solves the above problems, it is still difficult to adjust multiple sensors at the same time, the operation is not convenient enough, and it is easy to affect the timeliness of detection, so that the detection accuracy is reduced. Therefore, a GIS equipment internal defect positioning device is proposed to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a device for locating internal defects of GIS equipment in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a device for locating internal defects of GIS equipment, including a detection sensor, a transmission line is fixedly connected to the front end of the detection sensor, a comprehensive diagnostic device is fixedly connected to the front end of the transmission line, a lower guide rail is arranged below the detection sensor, an I-shaped lower slider is slidably connected to the inner surface of the lower guide rail, electric push rods are fixedly connected to the upper surfaces of both ends of the lower guide rail, an anti-interference device for preventing signal interference caused by entanglement of the transmission line is arranged on the front side of the lower guide rail, the top end of the electric push rod is fixedly connected to the upper guide rail, a leakage protection device for preventing the device from leaking electricity and causing harm is arranged below the upper guide rail, and the upper The inner surface of the guide rail is slidably connected with an I-shaped upper slider, the upper surface of the I-shaped lower slider is fixedly connected with a clamping shaft, the front side surface of the lower guide rail is fixedly connected with a fixing nut, the inner surface of the fixing nut is threadedly connected with an adjusting screw, the circumferential surface of the adjusting screw is hinged with a clamping plate, the lower surface of the I-shaped upper slider and the upper surface of the I-shaped lower slider are in contact with each other, the lower surface of the I-shaped upper slider is provided with an arc groove, and the circumferential surface of the detection sensor is in contact with the surface of the arc groove, the upper surface of the I-shaped lower slider is provided with an arc groove, and the circumferential surface of the detection sensor is in contact with the surface of the arc groove, the lower surface of the I-shaped upper slider is provided with a socket, and the clamping shaft and the socket The inner surfaces are in contact with each other, and the detection sensor is placed close to the surface of the GIS equipment. Different detection sensors can monitor and collect changes in temperature, vibration, ultrasonic waves and electromagnetic waves of the GIS equipment and transmit the signals to the comprehensive diagnostic device through the transmission line for analysis and diagnosis. The electric push rod is started, and the electric push rod rises and extends to drive the upper guide rail to rise. Then the detection sensor is inserted between the I-shaped lower slider and the I-shaped upper slider. At this time, the electric push rod contracts downward to drive the upper guide rail to descend. The upper guide rail drives the I-shaped upper slider to descend and fits with the I-shaped lower slider to clamp the detection sensor, which is convenient for placing multiple sets of detection sensors close to the GIS equipment at the same time and collecting data from different parts of the equipment. The intensity of the signal change can locate the specific part where the internal defect of the GIS equipment occurs. When the I-shaped lower slider and the I-shaped upper slider fit together, the clamping shaft on the I-shaped lower slider is inserted into the slot on the I-shaped upper slider, thereby making the I-shaped lower slider and the I-shaped upper slider engage. At this time, sliding the I-shaped lower slider and the I-shaped upper slider left and right can drive a group of detection sensors to move at the same time, thereby changing the detection position. The staff holds the clamping plate and then turns the adjusting screw to make the clamping plate move away from the lower guide rail, and then aligns the gap between the lower guide rail and the clamping plate with the flange on the GIS equipment and rotates the adjusting screw in the opposite direction to make the clamping plate close to the lower guide rail and clamp the flange, thereby quickly installing the device on the GIS equipment.

[0006] The top end of the connecting rod is fixedly connected to the inner surface of the positioning frame, and the bottom end of the connecting rod is fixedly connected to the inner surface of the positioning frame, and the bottom end of the connecting rod is fixedly connected to the inner surface of the positioning frame. When the upper and lower limit members are moved forward, the upper and lower limit members move forward, and ...

[0007] Preferably, the leakage protection device includes an insulating support shaft, a conductive probe is clamped on the inner surface of the insulating support shaft, a metal lead is fixedly connected to the front end of the conductive probe, and an end of the metal lead away from the conductive probe is fixedly connected to a grounding nail, the leakage protection device also includes an insulating connecting plate, an insulating rotating shaft is hinged on the inner surface of the insulating connecting plate, an insulating rail is fixedly connected to the side surface of the positioning frame, an insulating shift block is slidably connected to the inner surface of the insulating rail, the insulating support shaft is fixedly connected to the lower surface of the lower guide rail, the insulating connecting plate is fixedly connected to the front side surface of the lower guide rail, the metal lead and the insulating rotating shaft are in contact with each other on a circumferential surface, the grounding nail and the inner surface of the insulating rail are slidably connected, and the insulating shift block and the grounding nail are clamped on a circumferential surface. When the measuring sensor detects leakage of GIS equipment, the conductive probe is started. The conductive probe absorbs the nearby current and then conducts it to the outside of the device through the metal lead and the grounding nail to eliminate the current. At the same time, the comprehensive diagnostic device sounds an alarm after receiving the leakage signal, providing the staff with safe processing time. When the positioning frame moves forward, it drives the insulating rail forward. The insulating rail drives the grounding nail forward and away from the GIS equipment to prevent the grounding nail from being too close to the GIS equipment when releasing current. When the grounding nail moves forward, the metal lead is stretched. When the grounding nail moves backward, the insulating shaft is rotated to reel in the metal lead to prevent the metal lead from being dragged. The insulating block is moved up and down, and the insulating block drives the grounding nail to slide up and down in the insulating rail, thereby adjusting the distance between the grounding nail and the ground.

[0008] The present invention adopts the above technical solution to bring the following beneficial effects: 1. The internal defect positioning device of the GIS equipment has a detection sensor that can monitor and collect changes in temperature, vibration, ultrasonic waves and electromagnetic waves of the GIS equipment and transmit the signal to the comprehensive diagnostic device through a transmission line for analysis and diagnosis, thereby detecting defects generated inside the GIS equipment. The I-shaped upper slider and the I-shaped lower slider clamp the detection sensor, making it easy to place multiple sets of detection sensors close to the GIS equipment at the same time and collect data from different parts of the equipment. The specific parts of the internal defects of the GIS equipment can be located according to the intensity of the signal changes in different parts of the equipment, thereby improving the detection accuracy.

[0009] 2. The internal defect locating device of the GIS equipment, the lower limit piece and the upper limit piece clamp the transmission line to prevent the transmission lines from being entangled with each other, causing interference between different signals of the equipment and affecting data accuracy. During the forward movement of the lower limit piece and the upper limit piece, the end of the transmission line close to the detection sensor is straightened to further prevent the transmission lines from being entangled or contacted to cause signal interference.

[0010] 3. The internal defect locating device of the GIS equipment releases the pull plate. At this time, the elastic reset action of the spring pulls the pull plate downward to reset. The pull plate then drives the slide bar and the upper limit piece to move downward to reset and clamp the transmission line, which improves the convenience of using the device.

[0011] 4. The internal defect location device of the GIS equipment uses a conductive probe to absorb the nearby current, and then conducts it to the outside of the device through metal leads and grounding pins to eliminate the current, preventing the current from accumulating on the surface of the GIS equipment and causing danger. At the same time, the comprehensive diagnostic device will sound an alarm after receiving the leakage signal, providing staff with safe processing time, thereby improving the safety of the device.

[0012] 5. The internal defect positioning device of the GIS equipment moves the grounding nail forward and away from the GIS equipment to prevent the grounding nail from being too close to the GIS equipment when releasing current, which further improves the safety of the device. The insulating block drives the grounding nail to slide up and down in the insulating rail, thereby adjusting the distance between the grounding nail and the ground, making it more convenient to release current and protect different types of GIS equipment, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the upper guide rail of the present invention; Figure 3 For the present invention Figure 2 A is a schematic diagram of the enlarged structure of the middle part; Figure 4 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the anti-interference device of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of B; Figure 6 It is a schematic diagram of the side and bottom three-dimensional structure of the leakage protection device of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of C in the figure.

[0014] In the figure: 1. detection sensor; 2. transmission line; 3. comprehensive diagnostic device; 4. lower guide rail; 5. upper guide rail; 6. I-shaped lower slider; 7. I-shaped upper slider; 8. anti-interference device; 9. leakage protection device; 10. electric push rod; 11. fixing nut; 12. adjusting screw; 13. clamping plate; 14. clamping shaft; 81. lower limit piece; 82. upper limit piece; 83. sliding rod; 84. folding rod one; 85. folding rod two; 86. positioning frame; 87. connecting rod; 88. pulling plate; 91. insulating support shaft; 92. conductive probe; 93. metal lead; 94. grounding nail; 95. insulating connecting plate; 96. insulating rotating shaft; 97. insulating clamping rail; 98. insulating shifting block. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-Figure 7An embodiment of the present invention is: a device for locating internal defects of GIS equipment, comprising a detection sensor 1, a transmission line 2 is fixedly connected to the front end of the detection sensor 1, a comprehensive diagnostic device 3 is fixedly connected to the front end of the transmission line 2, a lower guide rail 4 is arranged below the detection sensor 1, an I-shaped lower slider 6 is slidably connected to the inner surface of the lower guide rail 4, and electric push rods 10 are fixedly connected to the upper surfaces of both ends of the lower guide rail 4. The detection sensor 1 can monitor and collect changes in temperature, vibration, ultrasonic waves and electromagnetic waves of the GIS equipment and transmit the signals to the comprehensive diagnostic device 3 for analysis and diagnosis through the transmission line 2, thereby detecting defects generated inside the GIS equipment, an anti-interference device 8 for preventing signal interference caused by winding of the transmission line 2 is arranged on the front side of the lower guide rail 4, an upper guide rail 5 is fixedly connected to the top end of the electric push rod 10, and a leakage protection device 9 for preventing the device from leaking and causing harm is arranged below the upper guide rail 5, an I-shaped upper slider 7 is slidably connected to the inner surface of the upper guide rail 5, and an I-shaped lower slider 6 is fixedly connected with a clamping shaft 14, and the front side surface of the lower guide rail 4 is fixedly connected with a fixing nut 11, and the inner surface of the fixing nut 11 is threadedly connected with an adjusting screw 12, and the circumferential surface of the adjusting screw 12 is hinged with a clamping plate 13, and the lower surface of the I-shaped upper slider 7 and the upper surface of the I-shaped lower slider 6 are in contact with each other, and the lower surface of the I-shaped upper slider 7 is provided with an arc groove, and the circumferential surface of the detection sensor 1 and the surface of the arc groove are in contact with each other, and the upper surface of the I-shaped lower slider 6 is provided with an arc groove, and the circumferential surface of the detection sensor 1 and the surface of the arc groove are in contact with each other, and the lower surface of the I-shaped upper slider 7 is provided with a plug hole, and the clamping shaft 14 and the inner surface of the plug hole are in contact with each other, and the I-shaped upper slider 7 and the I-shaped lower slider 6 clamp the detection sensor 1, which is convenient for bringing multiple groups of detection sensors 1 close to the GIS equipment at the same time and collecting data from different parts of the equipment, and locating the specific location where the internal defects of the GIS equipment occur according to the intensity of the signal changes in different parts of the equipment, thereby improving the detection accuracy.

[0017] Working principle: Place the detection sensor 1 close to the surface of the GIS equipment. Different detection sensors 1 can monitor and collect changes in temperature, vibration, ultrasonic waves and electromagnetic waves of the GIS equipment and transmit the signals to the comprehensive diagnostic device 3 through the transmission line 2 for analysis and diagnosis, thereby detecting defects inside the GIS equipment. Start the electric push rod 10, which rises and extends to drive the upper guide rail 5 to rise. Then insert the detection sensor 1 between the I-shaped lower slider 6 and the I-shaped upper slider 7. At this time, the electric push rod 10 contracts downward to drive the upper guide rail 5 to descend. The upper guide rail 5 drives the I-shaped upper slider 7 to descend and fits with the I-shaped lower slider 6 to clamp the detection sensor 1. It is convenient to place multiple groups of detection sensors 1 close to the GIS equipment at the same time and collect data from different parts of the equipment. According to the intensity of the signal changes in different parts of the equipment, the internal defects of the GIS equipment can be located. The specific parts produced improve the detection accuracy. When the I-shaped lower slider 6 and the I-shaped upper slider 7 fit each other, the clamping shaft 14 on the I-shaped lower slider 6 is inserted into the slot provided on the I-shaped upper slider 7, so that the I-shaped lower slider 6 and the I-shaped upper slider 7 are clamped, which improves the stability of the installation of the detection sensor 1. At this time, sliding the I-shaped lower slider 6 and the I-shaped upper slider 7 left and right can drive a group of detection sensors 1 to move at the same time, thereby changing the detection position, which improves the convenience of using the device. The staff holds the clamping plate 13 and then rotates the adjusting screw 12 to make the clamping plate 13 away from the lower guide rail 4, and then aligns the gap between the lower guide rail 4 and the clamping plate 13 with the flange on the GIS equipment and rotates the adjusting screw 12 in the opposite direction to make the clamping plate 13 close to the lower guide rail 4 and clamp the flange, thereby quickly installing the device on the GIS equipment, further improving the convenience of using the device.

[0018] See also Figure 1-Figure 7On the basis of the above-mentioned embodiment, in another embodiment of the present invention, the anti-interference device 8 includes a lower limit member 81, an upper limit member 82 is arranged above the lower limit member 81, and a slide bar 83 is fixedly connected to the upper surface of the upper limit member 82. The lower limit member 81 and the upper limit member 82 clamp the transmission line 2 to prevent the transmission lines 2 from being entangled with each other, causing interference between different signals generated by the device and affecting the accuracy of the data. During the forward movement of the lower limit member 81 and the upper limit member 82, the end of the transmission line 2 close to the detection sensor 1 is straightened to further prevent the transmission lines 2 from being entangled or contacted to cause signal interference. The anti-interference device 8 also includes a folding rod 84, the front end of the folding rod 84 is hinged with a positioning frame 86, the front side of the I-shaped lower slider 6 is hinged with a folding rod 2 85, and the lower surface of the lower limit member 81 is fixedly connected There is a connecting rod 87, and a pull plate 88 is fixedly connected to the top of the sliding rod 83. The circumferential surface of the transmission line 2 and the upper surface of the lower limit member 81 are in contact with each other, and the circumferential surface of the transmission line 2 and the lower surface of the upper limit member 82 are in contact with each other. The folding rod 1 84 is hinged to the front side of the I-shaped upper slider 7, the front end of the folding rod 2 85 is hinged to the front end of the folding rod 1 84, and the positioning frame 86 is hinged to the front end of the folding rod 2 85. A spring is arranged between the lower surface of the pull plate 88 and the upper surface of the positioning frame 86. The sliding rod 83 and the top end of the positioning frame 86 are slidably connected, and the bottom end of the connecting rod 87 is fixedly connected to the inner surface of the positioning frame 86. The pull plate 88 is released, and the elastic reset action of the spring pulls the pull plate 88 to move downward and reset. The pull plate 88 then drives the sliding rod 83 and the upper limit member 82 to move downward and reset and clamp the transmission line 2, thereby improving the convenience of using the device.

[0019] Working principle: The transmission line 2 is clamped by the lower limit member 81 and the upper limit member 82 to prevent the transmission lines 2 from being entangled with each other, causing interference between different signals in the equipment and affecting the accuracy of the data. When the I-shaped upper slider 7 descends, the rear end of the folding rod 1 84 is driven to descend, so that the folding rod 1 84 and the folding rod 2 85 are folded close to each other, thereby pushing the positioning frame 86 forward. When the positioning frame 86 moves forward, it drives the connecting rod 87 and the slide bar 83 to move forward. The connecting rod 87 and the slide bar 83 drive the lower limit member 81 and the upper limit member 82 to move forward. During the process of the lower limit member 81 and the upper limit member 82 moving forward, the end of the transmission line 2 close to the detection sensor 1 is straightened, further preventing the transmission line 2 is entangled or contacted with each other, causing signal interference. Before installing the detection sensor 1, pull the pull plate 88 upwards, the pull plate 88 drives the slide bar 83 to slide upwards, and the slide bar 83 drives the upper limit piece 82 to move upward, so that the distance between the upper limit piece 82 and the lower limit piece 81 becomes larger. At this time, the detection sensor 1 and the transmission line 2 can be passed through the lower limit piece 81 and the upper limit piece 82. After the detection sensor 1 is installed with the I-shaped lower slider 6 and the I-shaped upper slider 7, release the pull plate 88. At this time, the elastic reset action of the spring pulls the pull plate 88 to move downward and reset. The pull plate 88 then drives the slide bar 83 and the upper limit piece 82 to move downward and reset and clamp the transmission line 2, thereby improving the convenience of using the device.

[0020] See also Figure 1-Figure 7On the basis of the above-mentioned embodiment, in another embodiment of the present invention, the leakage protection device 9 includes an insulating support shaft 91, a conductive probe 92 is clamped on the inner surface of the insulating support shaft 91, a front end of the conductive probe 92 is fixedly connected to a metal lead 93, and an end of the metal lead 93 away from the conductive probe 92 is fixedly connected to a grounding nail 94. The conductive probe 92 absorbs the nearby current, and then conducts it to the outside of the device through the metal lead 93 and the grounding nail 94 to eliminate the current, thereby preventing the current from accumulating on the surface of the GIS equipment and causing danger. At the same time, the comprehensive diagnostic device 3 sounds an alarm after receiving the leakage signal, providing the staff with safe processing time, thereby improving the safety of the device. The leakage protection device 9 also includes an insulating connecting plate 95, the inner surface of the insulating connecting plate 95 is hinged with an insulating rotating shaft 96, and the side surface of the positioning frame 86 An insulating rail 97 is fixedly connected, and an insulating block 98 is slidably connected to the inner surface of the insulating rail 97. The insulating support shaft 91 is fixedly connected to the lower surface of the lower guide rail 4, the insulating connecting plate 95 is fixedly connected to the front side of the lower guide rail 4, the circumferential surfaces of the metal lead 93 and the insulating rotating shaft 96 are in contact with each other, the grounding nail 94 is slidably connected to the inner surface of the insulating rail 97, the insulating block 98 is engaged with the circumferential surface of the grounding nail 94, the grounding nail 94 moves forward and away from the GIS equipment to prevent the grounding nail 94 from being too close to the GIS equipment when releasing current, thereby further improving the safety of the device. The insulating block 98 drives the grounding nail 94 to slide up and down in the insulating rail 97, thereby adjusting the distance between the grounding nail 94 and the ground, thereby making it more convenient to release current, and facilitating the protection of GIS equipment of different models, thereby improving the applicability of the device.

[0021] Working principle: When the detection sensor 1 detects that the GIS equipment is leaking, the conductive probe 92 is activated. The conductive probe 92 absorbs the nearby current and then conducts it to the outside of the device through the metal lead 93 and the grounding nail 94 to eliminate the current, preventing the current from accumulating on the surface of the GIS equipment and causing danger. At the same time, the comprehensive diagnostic device 3 sounds an alarm after receiving the leakage signal, providing the staff with safe processing time, thereby improving the safety of the device. When the positioning frame 86 moves forward, it drives the insulating rail 97 forward, and the insulating rail 97 drives the grounding nail 94 forward and away from the GIS equipment. , preventing the grounding nail 94 from being too close to the GIS equipment when releasing current, further improving the safety of the device. When the grounding nail 94 moves forward, the metal lead 93 is stretched. When the grounding nail 94 moves backward, the insulating shaft 96 is rotated to reel in the metal lead 93 to prevent the metal lead 93 from being dragged. The insulating block 98 is moved up and down, and the insulating block 98 drives the grounding nail 94 to slide up and down in the insulating rail 97, thereby adjusting the distance between the grounding nail 94 and the ground, so as to facilitate the release of current, facilitate the protection of different types of GIS equipment, and improve the applicability of the device.

[0022] The present invention provides a device for locating internal defects of GIS equipment. There are many methods and ways to implement the technical solution. The above is only a preferred implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A device for locating internal defects of GIS equipment, comprising a detection sensor (1), characterized in that: The front end of the detection sensor (1) is fixedly connected to a transmission line (2), the front end of the transmission line (2) is fixedly connected to a comprehensive diagnostic device (3), a lower guide rail (4) is arranged below the detection sensor (1), an I-shaped lower slider (6) is slidably connected to the inner surface of the lower guide rail (4), electric push rods (10) are fixedly connected to the upper surfaces of both ends of the lower guide rail (4), an anti-interference device (8) for preventing the transmission line (2) from winding and causing signal interference is arranged on the front side of the lower guide rail (4), and the top of the electric push rod (10) is fixedly connected to the upper surface of the two ends of the lower guide rail (4). The upper end of the lower guide rail (4) is fixedly connected to an upper guide rail (5), a leakage protection device (9) for preventing leakage of the device from causing harm is arranged below the upper guide rail (5), an I-shaped upper slider (7) is slidably connected to the inner surface of the upper guide rail (5), a clamping shaft (14) is fixedly connected to the upper surface of the I-shaped lower slider (6), a fixing nut (11) is fixedly connected to the front side surface of the lower guide rail (4), an adjusting screw (12) is threadedly connected to the inner surface of the fixing nut (11), and a clamping plate (13) is hingedly connected to the circumferential surface of the adjusting screw (12).

2. The device for locating internal defects of GIS equipment according to claim 1, characterized in that: The lower surface of the I-shaped upper slider (7) and the upper surface of the I-shaped lower slider (6) are in contact with each other, the lower surface of the I-shaped upper slider (7) is provided with an arc groove, and the circumferential surface of the detection sensor (1) and the surface of the arc groove are in contact with each other, the upper surface of the I-shaped lower slider (6) is provided with an arc groove, and the circumferential surface of the detection sensor (1) and the surface of the arc groove are in contact with each other, and the lower surface of the I-shaped upper slider (7) is provided with an insertion hole, and the clamping shaft (14) and the inner surface of the insertion hole are in contact with each other.

3. The device for locating internal defects of GIS equipment according to claim 2, characterized in that: The anti-interference device (8) comprises a lower limit member (81), an upper limit member (82) is arranged above the lower limit member (81), and a sliding rod (83) is fixedly connected to the upper surface of the upper limit member (82).

4. The device for locating internal defects of GIS equipment according to claim 3, characterized in that: The anti-interference device (8) further comprises a folding rod (84), the front end of which is hingedly connected to a positioning frame (86), the front side of the I-shaped lower sliding block (6) is hingedly connected to a folding rod (85), the lower surface of the lower limit member (81) is fixedly connected to a connecting rod (87), and the top end of the sliding block (83) is fixedly connected to a pull plate (88).

5. The device for locating internal defects of GIS equipment according to claim 4, characterized in that: The circumferential surface of the transmission line (2) and the upper surface of the lower limit member (81) are in contact with each other, and the circumferential surface of the transmission line (2) and the lower surface of the upper limit member (82) are in contact with each other. The folding rod (84) and the front side of the I-shaped upper slider (7) are hinged, the front end of the folding rod (85) and the front end of the folding rod (84) are hinged, the positioning frame (86) and the front end of the folding rod (85) are hinged, a spring is provided between the lower surface of the pull plate (88) and the upper surface of the positioning frame (86), the sliding rod (83) and the top end of the positioning frame (86) are slidably connected, and the bottom end of the connecting rod (87) and the inner surface of the positioning frame (86) are fixedly connected.

6. The device for locating internal defects of GIS equipment according to claim 5, characterized in that: The leakage protection device (9) comprises an insulating support shaft (91), a conductive probe (92) being clamped on the inner surface of the insulating support shaft (91), a metal lead (93) being fixedly connected to the front end of the conductive probe (92), and a grounding nail (94) being fixedly connected to one end of the metal lead (93) away from the conductive probe (92).

7. The device for locating internal defects of GIS equipment according to claim 6, characterized in that: The leakage protection device (9) further comprises an insulating connecting plate (95), the inner surface of the insulating connecting plate (95) being hingedly connected to an insulating rotating shaft (96), the side surface of the positioning frame (86) being fixedly connected to an insulating clamping rail (97), and the inner surface of the insulating clamping rail (97) being slidably connected to an insulating shifting block (98).

8. The device for locating internal defects of GIS equipment according to claim 7, characterized in that: The insulating support shaft (91) is fixedly connected to the lower surface of the lower guide rail (4), the insulating connecting plate (95) is fixedly connected to the front side of the lower guide rail (4), the circumferential surfaces of the metal lead (93) and the insulating rotating shaft (96) are in contact with each other, the grounding nail (94) is slidably connected to the inner surface of the insulating clamping rail (97), and the insulating shifting block (98) is clamped to the circumferential surface of the grounding nail (94).

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