High-voltage cable partial discharge detection device

Abstract

The invention discloses a high-voltage cable partial discharge detection device, and relates to the technical field of discharge detection.The high-voltage cable partial discharge detection device comprises a lower box body, a main driving motor is installed in the lower box body, two clamping wheels are symmetrically installed on the main driving motor, a lower detection semi-ring is installed in the lower box body, and two clamping wheels are symmetrically installed on the lower detection semi-ring. An upper box body is hinged to the lower box body, an upper detection semi-ring and a processing terminal are installed on the upper box body, the upper box body and the lower box body are combined to form a rectangular detection box body, a cable penetrates through openings in the two ends, and a main driving motor is started to drive clamping wheels to rotate. The two clamping wheels drive the whole detection device to move along the cable through friction between the two clamping wheels and the cable, the upper detection half ring and the lower detection half ring detect pulse signals on the two sides of the cable to judge whether the cable is subjected to partial discharge and damage or not, continuous detection can be conducted on the aerial cable, the discharge part is accurately determined, the detection efficiency is improved, and the detection accuracy is improved. And the working intensity and danger coefficient of workers are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of discharge detection, in particular to a high-voltage cable partial discharge detection device. Background Art

[0002] High-voltage cable discharge detection is an important means of ensuring the safe operation of power systems. With the acceleration of urbanization and the expansion of renewable energy grid connection, the application of high-voltage cables is becoming more and more extensive. However, during long-term operation, local discharge may occur due to insulation aging, manufacturing defects, mechanical damage or environmental factors (such as moisture and chemical corrosion). Local discharge is an early sign of insulation degradation. If not detected in time, it will gradually erode the insulation material and eventually lead to cable breakdown or short circuit, causing large-scale power outages and even safety accidents. Traditional manual inspections are difficult to detect hidden discharges, while modern detection technologies (such as high-frequency current sensors, ultrasonic detection, and ultra-high frequency methods) can detect discharge signals in real time.

[0003] Under existing technology, non-contact detection is used when inspecting cables installed at high altitudes. This detection method has a wide range and is fast, but the range of detecting partial discharges is large and can only determine the approximate location, which is not accurate enough. When workers make subsequent repairs, they need to conduct local inspections again. When manual precise positioning is performed, the detection efficiency is low and the workers' work risk factor is high. Summary of the Invention

[0004] The object of the present invention is to provide a high-voltage cable partial discharge detection device to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: the high-voltage cable partial discharge detection device includes a lower box body, a main drive motor is installed in the lower box body, a motor gear is installed on the output shaft of the main drive motor, a drive gear is rotatably installed in the lower box body, a bevel gear is coaxially installed on the drive gear, the bevel gear is meshed with the motor gear, two transmission gears are symmetrically installed in the lower box body, both of the transmission gears are meshed with the drive gear, a transmission rod is installed on the transmission gear, an active fork is installed on the upper end of the transmission rod, an active fork rod is rotatably installed on the active fork, a driven fork is installed on the active fork rod, a rotating rod is installed on the driven fork, a clamping wheel is installed on the rotating rod, a lower detection half ring is installed in the lower box body, an upper box body is hinged on the lower box body, and an upper detection half ring and a processing terminal are installed on the upper box body.

[0006] As an optimal technical solution, two mounting blocks are symmetrically installed in the lower box body, and electric telescopic rods are installed on the two mounting blocks. The ends of the two electric telescopic rods are respectively connected to the ends of the two rotating rods away from the driven fork.

[0007] As an optimal technical solution, a buckle is installed on the upper box body for fixing the connection between the upper box body and the lower box body, and the upper detection half ring and the lower detection half ring are spliced ​​to form a circular detection ring.

[0008] As an optimal technical solution, both ends of the upper box and the lower box are provided with openings, the diameter of the openings at both ends of the upper box and the lower box are larger than the diameter of the cable to be detected, and several balls are installed at the openings at both ends of the upper box and the lower box.

[0009] As a preferred technical solution, a marking component and a cleaning component are provided on the lower box body and the upper box body. The marking component can display the detection results, and the cleaning component is conducive to the operation of the discharge detection and cleaning components.

[0010] As a preferred technical solution, the marking assembly includes a mounting half ring, an arc plate, a silo, a nozzle, a first auxiliary motor, a second auxiliary motor, a first external gear and a second external gear; The outer walls of the upper and lower boxes away from the main drive motor are both equipped with mounting half rings, and an arc plate is detachably mounted on the mounting half ring, the arc of the arc plate is greater than 180 degrees, a hopper is mounted on the arc plate, and a nozzle is mounted on the hopper, a first auxiliary motor is mounted on the output shaft of the first auxiliary motor, a second auxiliary motor is mounted on the upper box, and a second external gear is mounted on the output shaft of the second auxiliary motor, the first external gear and the second external gear are located in the same vertical plane, and the first external gear and the second external gear are symmetrical about the opening center, the first external gear and the second external gear are both engaged with the arc plate gear, and the first auxiliary motor, the second auxiliary motor and the nozzle are all electrically connected to the processing terminal.

[0011] As a preferred technical solution, the marking assembly further includes a mounting groove, an elastic baffle and a card bead; The installation semi-ring is provided with an installation groove, an elastic baffle is installed at the opening of the installation groove, and a plurality of clamping beads are evenly distributed on one side of the arc plate close to the installation semi-ring.

[0012] As a preferred technical solution, the cleaning assembly includes an upper sleeve, a lower sleeve, a turntable gear, an eccentric rod, a slider, a first connecting rod, a lower reciprocating plate, a first cleaning brush, a jack plate, a second connecting rod, an upper reciprocating plate, a second cleaning brush, a synchronous plug-in plate and a retractable connecting rod; The outer wall of the lower box body near the main driving motor is provided with a lower sleeve, and two turntable gears are symmetrically installed in the lower box body, and the two turntable gears are respectively meshed with the two transmission gears, and an eccentric rod is eccentrically installed on the turntable gear, and a slider is slidably installed on the end of the eccentric rod, and the slider is connected to the lower box body through a telescopic connecting rod. The first connecting rod is installed on the side of the slider close to the lower sleeve, and the two first connecting rods are connected through the lower reciprocating plate. The first cleaning brush is installed on the lower reciprocating plate. The upper sleeve is installed on the upper box body, and the upper sleeve and the lower sleeve are located in the same vertical plane. The jack plate is installed on the side of the slider away from the main driving motor, and an upper reciprocating plate is slidably installed on the upper sleeve, and a second cleaning brush is installed on the upper reciprocating plate. The upper reciprocating plate is symmetrically installed with a second connecting rod close to the side of the upper box body, and a synchronous plug-in plate is installed on the end of the second connecting rod.

[0013] As an optimal technical solution, a cable is placed between the upper box and the lower box, and the openings of the upper box and the lower box, the upper detection half ring, the lower detection half ring, the installation half ring, the upper sleeve and the lower sleeve are all coaxial with the cable.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By moving the detection device along the cable while detecting, the high-altitude cable can be detected continuously, the discharge position can be accurately determined, and the detection efficiency can be improved while reducing the work intensity and risk factor of the workers.

[0015] 2. Set up the marking component and spray the insulating marking material on the location where partial discharge or damage occurs through the nozzle to make precise markings, which will facilitate subsequent repairs and temporarily play a certain protective role.

[0016] 3. Set up a cleaning component to clean the surface of the cable to prevent impurities from affecting the partial discharge test results and the uniformity of the insulation marking material spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the present invention from a first perspective; Figure 2 This is a schematic diagram of the structure from a second viewing angle of the present invention; Figure 3 It is a schematic diagram of the cross-section structure of the present invention; Figure 4 For the present invention Figure 1 Schematic diagram of the enlarged structure at A in the middle; Figure 5 For the present invention Figure 2 Schematic diagram of the enlarged structure at B in the middle; Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure at C in the middle; Figure 7 For the present invention Figure 3 Schematic diagram of the enlarged structure at D in the middle; Figure 8 This is a schematic diagram of the structure of the present invention after being covered from a first perspective; Figure 9 This is a schematic diagram of the structure from a second viewing angle after the present invention is covered.

[0018] In the figure: 1. Lower housing; 2. Main drive motor; 3. Motor gear; 4. Bevel gear; 5. Drive gear; 6. Transmission gear; 7. Transmission rod; 8. Active fork; 9. Active fork rod; 10. Driven fork; 11. Rotating rod; 12. Clamping wheel; 13. Mounting block; 14. Electric telescopic rod; 15. Upper housing; 16. Lower detection half ring; 17. Upper detection half ring; 18. Processing terminal; 19. Buckle 20. Marking assembly; 2001. Mounting half ring; 2002. Mounting groove; 2003. Elastic baffle; 2004. Arc plate; 2005. Hopper; 2006. Sprinkler; 2007. Clamping bead; 2008. First auxiliary motor; 2009. Second auxiliary motor; 2010. First external gear; 2011. Second external gear; 21. Cleaning assembly; 2101. Upper sleeve; 2102. Lower sleeve; 2103. Turntable gear; 2104. Eccentric rod; 2105. Slider; 2106. First connecting rod; 2107. Lower reciprocating plate; 2108. First cleaning brush; 2109. Socket plate; 2110. Second connecting rod; 2111. Upper reciprocating plate; 2112. Second cleaning brush; 2113. Synchronous plug-in plate; 2114. Retractable connecting rod; 22. Ball bearing; 23. Cable. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0020] Example: Figures 1-4As shown, the present invention provides a technical solution for a partial discharge detection device for a high-voltage cable, which is characterized in that: the high-voltage cable partial discharge detection device includes a lower box body 1, a main drive motor 2 is installed in the lower box body 1, a motor gear 3 is installed on the output shaft of the main drive motor 2, a drive gear 5 is rotatably installed in the lower box body 1, a bevel gear 4 is coaxially installed on the drive gear 5, and the bevel gear 4 is meshed with the motor gear 3, two transmission gears 6 are symmetrically installed in the lower box body 1, and the two transmission gears 6 are meshed with the drive gear 5, a transmission rod 7 is installed on the transmission gear 6, an active fork 8 is installed on the upper end of the transmission rod 7, an active fork rod 9 is rotatably installed on the active fork 8, a driven fork 10 is installed on the active fork rod 9, a rotating rod 11 is installed on the driven fork 10, a clamping wheel 12 is installed on the rotating rod 11, a lower detection half ring 16 is installed in the lower box body 1, an upper box body 15 is hinged on the lower box body 1, an upper detection half ring 17 and a processing terminal 18 are installed on the upper box body 15, and the main drive motor 2. The upper detection half ring 17 and the lower detection half ring 16 are both electrically connected to the processing terminal 18 .

[0021] During detection, the upper box body 15 and the lower box body 1 are combined to form a rectangular detection box body, and the cables pass through the openings at both ends to start the main drive motor 2. The output shaft of the main drive motor 2 drives the motor gear 3 to rotate synchronously, and the motor gear 3 drives the bevel gear 4 to rotate through gear meshing. The bevel gear 4 drives the drive gear 5 to rotate synchronously, and the drive gear 5 drives the transmission gear 6 to rotate synchronously through gear meshing. The transmission gear 6 drives the rotating rod 11 to rotate through the universal joint structure formed by the active fork 8, the active fork rod 9 and the driven fork 10. When the rotating rod 11 rotates, it will drive the clamping wheel 12 to rotate synchronously. The two clamping wheels 12 drive the entire detection device to move along the cable through the friction between them and the cable. When the detection device moves along the cable, the upper detection half ring 17 and the lower detection half ring 16 simultaneously detect the pulse signals on both sides of the cable to determine whether the cable has partial discharge and damage. By moving and detecting along the cable line, the high-altitude cable can be continuously detected, the discharge location can be accurately determined, and the detection efficiency can be improved while reducing the work intensity and risk factor of the workers.

[0022] Two mounting blocks 13 are symmetrically mounted in the lower housing 1 , and electric telescopic rods 14 are mounted on both mounting blocks 13 . The ends of the two electric telescopic rods 14 are respectively connected to the ends of the two rotating rods 11 away from the driven fork 10 .

[0023] Before testing, the electric telescopic rod 14 is in a retracted state to prevent the clamping wheel 12 from being squeezed against the cable, which would affect installation and testing. After the upper box 15 and the lower box 1 are closed, when the main drive motor 2 is running, the electric telescopic rod 14 extends and drives the clamping wheel 12 close to the cable, ensuring that the device can move along the cable for continuous testing and ensuring testing efficiency.

[0024] A buckle 19 is installed on the upper box body 15 for fixing the connection between the upper box body 15 and the lower box body 1. The upper detection half ring 17 and the lower detection half ring 16 are spliced ​​together to form a circular detection ring.

[0025] The detection device is formed by hingedly connecting the upper box 15 and the lower box 1. It does not need to be inserted from the cable port during detection, which facilitates the installation of the detection device on the cable, and the buckle 19 prevents the box from cracking during the detection process.

[0026] Both ends of the upper box body 15 and the lower box body 1 are provided with openings, the diameters of the openings at both ends of the upper box body 15 and the lower box body 1 are larger than the diameter of the cable to be detected, and a plurality of balls 22 are installed at the openings at both ends of the upper box body 15 and the lower box body 1.

[0027] The ball 22 can effectively reduce the friction between the end of the detection device and the cable, which is beneficial to the movement of the detection device, while reducing the friction on the cable and preventing damage to the cable.

[0028] A marking component 20 and a cleaning component 21 are provided on the lower box body 1 and the upper box body 15. The marking component 20 can display the detection results, and the cleaning component 21 is conducive to discharge detection and the operation of the cleaning component 21.

[0029] like Figure 1-Figure 3 and Figure 7-Figure 9 As shown, the marking assembly 20 includes a mounting half ring 2001, an arc plate 2004, a hopper 2005, a nozzle 2006, a first auxiliary motor 2008, a second auxiliary motor 2009, a first external gear 2010 and a second external gear 2011; The upper box body 15 and the lower box body 1 are both provided with a mounting half ring 2001 on the outer wall away from the main drive motor 2. The mounting half ring 2001 is detachably provided with an arc plate 2004. The arc of the arc plate 2004 is greater than 180 degrees. A hopper 2005 is provided on the arc plate 2004. A nozzle 2006 is provided on the hopper 2005. A first auxiliary motor 2008 is provided on the lower box body 1. A first external gear 2010 is provided on the output shaft of the first auxiliary motor 2008. A first external gear 2010 is provided on the upper box body 15. Two auxiliary motors 2009, a second external gear 2011 is installed on the output shaft of the second auxiliary motor 2009, the first external gear 2010 and the second external gear 2011 are located in the same vertical plane, and the first external gear 2010 and the second external gear 2011 are symmetrical about the opening center, the first external gear 2010 and the second external gear 2011 are both engaged with the arc plate 2004 gear, the first auxiliary motor 2008, the second auxiliary motor 2009 and the nozzle 2006 are all electrically connected to the processing terminal 18.

[0030] The upper detection half ring 17 and the lower detection half ring 16 will transmit the detection results back to the processing terminal 18. When partial discharge or damage is detected, the processing terminal 18 will control the main drive motor 2 to delay stopping so that the nozzle 2006 is at the same horizontal plane as the partial discharge or damage position. Then the processing terminal 18 controls the first auxiliary motor 2008, the second auxiliary motor 2009 and the nozzle 2006 to operate. The first auxiliary motor 2008 drives the first external gear 2010, and the second auxiliary motor 2009 drives the second external gear 2011. The first external gear 2010 and the second external gear 2011 drive the arc plate 2004 to rotate along the cable through gear meshing. The nozzle 2006 will spray insulating marking material around the partial discharge or damage area for precise marking to facilitate subsequent repair processing and temporarily play a certain protective role.

[0031] The marking assembly 20 further includes a mounting groove 2002, an elastic baffle 2003 and a card bead 2007; A mounting groove 2002 is provided on the mounting half ring 2001 , an elastic baffle 2003 is installed at the opening of the mounting groove 2002 , and a plurality of clamping beads 2007 are evenly distributed on one side of the arc plate 2004 close to the mounting half ring 2001 .

[0032] When the detection device is used, the upper box body 15 and the lower box body 1 are first combined, and then the arc plate 2004 is pressed into the installation groove 2002. The outer side of the arc plate 2004 needs to be engaged with the first external gear 2010 and the second external gear 2011. This detachable installation method facilitates the combination of the upper box body 15 and the lower box body 1 and does not affect the rotation of the arc plate 2004. The curvature of the arc plate 2004 is greater than 180 degrees, ensuring that at least one of the first external gear 2010 and the second external gear 2011 can transmit the arc plate.

[0033] like Figures 1-6 As shown, the cleaning assembly 21 includes an upper sleeve 2101, a lower sleeve 2102, a turntable gear 2103, an eccentric rod 2104, a slider 2105, a first connecting rod 2106, a lower reciprocating plate 2107, a first cleaning brush 2108, a socket plate 2109, a second connecting rod 2110, an upper reciprocating plate 2111, a second cleaning brush 2112, a synchronous plug-in plate 2113 and a retractable connecting rod 2114; The outer wall of the lower box body 1 close to the main drive motor 2 is installed with a lower sleeve 2102, and two turntable gears 2103 are symmetrically installed in the lower box body 1. The two turntable gears 2103 are respectively engaged with the two transmission gears 6. An eccentric rod 2104 is eccentrically installed on the turntable gear 2103, and a slider 2105 is slidably installed on the end of the eccentric rod 2104. The slider 2105 is connected to the lower box body 1 through a telescopic connecting rod 2114. A first connecting rod 2106 is installed on the side of the slider 2105 close to the lower sleeve 2102. The two first connecting rods 2106 are connected to the lower reciprocating plate 2106 through the lower reciprocating plate 2106. 7 are connected, a first cleaning brush is installed on the lower reciprocating plate 2107, an upper sleeve 2101 is installed on the upper box body 15, the upper sleeve 2101 and the lower sleeve 2102 are located in the same vertical plane, a socket plate 2109 is installed on the side of the slider 2105 away from the main drive motor 2, an upper reciprocating plate 2111 is slidably installed on the upper sleeve 2101, a second cleaning brush 2112 is installed on the upper reciprocating plate 2111, a second connecting rod 2110 is symmetrically installed on the side of the upper reciprocating plate 2111 close to the upper box body 15, and a synchronization plug-in plate 2113 is installed on the end of the second connecting rod 2110.

[0034] When the main drive motor 2 is running, it drives the transmission gear 6 to rotate, and the transmission gear 6 drives the turntable gear 2103 to rotate through the gear meshing action. Since the eccentric rod 2104 is eccentrically installed on the turntable gear 2103, the slider 2105 is connected to the lower box body 1 through the telescopic connecting rod 2114, and the eccentric rod 2104 is slidably installed in the slider 2105, the eccentric rod 2104 slides back and forth perpendicular to the first connecting rod 2106 in the slider 2105. At the same time, the eccentric rod 2104 drives the slider 2105 to reciprocate parallel to the first connecting rod 2106. When the slider 2105 reciprocates parallel to the first connecting rod 2106 When the upper box body 15 and the lower box body 1 are closed, the synchronous plug-in plate 2113 is inserted into the jack plate 2109, and the reciprocating movement of the slider 2105 drives the second cleaning brush 2112 to move synchronously through the second connecting rod 2110 and the upper reciprocating plate 2111. The first cleaning brush 2108 and the second cleaning brush 2112 form a whole ring-shaped cleaning brush to clean the cable, while preventing impurities from affecting the detection of the cable by the detection ring and ensuring the uniform spraying of the insulation marking material.

[0035] The cable 23 is placed between the upper box body 15 and the lower box body 1. The openings of the upper box body 15 and the lower box body 1, the upper detection half ring 17, the lower detection half ring 16, the installation half ring 2001, the upper sleeve 2101 and the lower sleeve 2102 are all coaxial with the cable 23.

[0036] The coaxial installation can place the cable 23 in the center of the device, reducing the wear caused by friction while ensuring the effectiveness of cleaning, testing and marking.

[0037] Working principle of the present invention: When in use, close the lower box 1 and the upper box 15, wrap the cable 23 in the device, and press the arc plate 2004 into the installation half ring; In order of precedence, the main drive motor 2 drives the first cleaning brush 2108 and the second cleaning brush 2112 through the first transmission member to clean the surface of the cable 23 to prevent impurities from affecting the partial discharge detection results; Behind the cleaning assembly 21, the main drive motor 2 drives the two clamping wheels 12 to rotate through the second transmission parts such as gears and universal joints, and drives the entire device to move along the cable line through friction. At the same time, the upper detection half ring 17 and the lower detection half ring 16 perform annular detection on the cable line. By moving the detection device along the cable line while detecting, the continuity detection of the high-altitude cable can be carried out, the discharge position can be accurately determined, and the detection efficiency is improved while reducing the work intensity and risk factor of the workers. The upper detection half ring 17 and the lower detection half ring 16 will transmit the detection results to the processing terminal. When partial discharge or damage is detected, the processing terminal 18 will control the main drive motor 2 to delay and stop, and the device will stop moving. The insulating marking material will be sprayed on the location where the partial discharge or damage occurs through the nozzle 2006 for precise marking, which will facilitate subsequent repair processing and temporarily play a certain protective role.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A high-voltage cable partial discharge detection device, characterized in that: The high-voltage cable partial discharge detection device comprises a lower box (1), wherein a main drive motor (2) is installed in the lower box (1), a motor gear (3) is installed on the output shaft of the main drive motor (2), a drive gear (5) is rotatably installed in the lower box (1), a bevel gear (4) is coaxially installed on the drive gear (5), and the bevel gear (4) is meshed with the motor gear (3), and two transmission gears (6) are symmetrically installed in the lower box (1), and the two transmission gears (6) are both meshed with the drive gear (5). ) is mounted on a transmission rod (7), an active fork (8) is mounted on the upper end of the transmission rod (7), an active fork rod (9) is rotatably mounted on the active fork (8), a driven fork (10) is mounted on the active fork rod (9), a rotating rod (11) is mounted on the driven fork (10), a clamping wheel (12) is mounted on the rotating rod (11), a lower detection half ring (16) is mounted in the lower box body (1), an upper box body (15) is hinged on the lower box body (1), and an upper detection half ring (17) and a processing terminal (18) are mounted on the upper box body (15).

2. A high-voltage cable partial discharge detection device according to claim 1, characterized in that: Two mounting blocks (13) are symmetrically mounted in the lower box (1), and an electric telescopic rod (14) is mounted on each of the mounting blocks (13). The ends of the two electric telescopic rods (14) are respectively connected to the ends of the two rotating rods (11) on a side away from the driven fork (10).

3. A high-voltage cable partial discharge detection device according to claim 2, characterized in that: A buckle (19) is installed on the upper box body (15), and the buckle (19) is used to fix the connection between the upper box body (15) and the lower box body (1). The upper detection half ring (17) and the lower detection half ring (16) are spliced ​​to form a circular detection ring.

4. A high-voltage cable partial discharge detection device according to claim 3, characterized in that: Both ends of the upper box body (15) and the lower box body (1) are provided with openings, the diameters of the openings at both ends of the upper box body (15) and the lower box body (1) are larger than the diameter of the cable to be detected, and a plurality of balls (22) are installed at the openings at both ends of the upper box body (15) and the lower box body (1).

5. A high-voltage cable partial discharge detection device according to claim 4, characterized in that: The lower box body (1) and the upper box body (15) are provided with a marking component (20) and a cleaning component (21). The marking component (20) can display the detection result, and the cleaning component (21) is conducive to the discharge detection and the operation of the cleaning component (21).

6. A high-voltage cable partial discharge detection device according to claim 5, characterized in that: The marking assembly (20) comprises a mounting half ring (2001), an arc plate (2004), a silo (2005), a nozzle (2006), a first auxiliary motor (2008), a second auxiliary motor (2009), a first external gear (2010), and a second external gear (2011); A mounting half-ring (2001) is mounted on the outer wall of the upper box body (15) and the lower box body (1) on the side away from the main drive motor (2). An arc plate (2004) is detachably mounted on the mounting half-ring (2001). The arc of the arc plate (2004) is greater than 180 degrees. A silo (2005) is mounted on the arc plate (2004). A nozzle (2006) is mounted on the silo (2005). A first auxiliary motor (2008) is mounted on the lower box body (1). A first external gear (2010) is mounted on the output shaft of the first auxiliary motor (2008). The upper box body (15) A second auxiliary motor (2009) is installed on the upper portion, a second external gear (2011) is installed on the output shaft of the second auxiliary motor (2009), the first external gear (2010) and the second external gear (2011) are located in the same vertical plane, and the first external gear (2010) and the second external gear (2011) are symmetrical about the opening center, the first external gear (2010) and the second external gear (2011) are both engaged with the gear of the arc plate (2004), and the first auxiliary motor (2008), the second auxiliary motor (2009) and the nozzle (2006) are all electrically connected to the processing terminal (18).

7. A high-voltage cable partial discharge detection device according to claim 6, characterized in that: The marking assembly (20) further comprises a mounting groove (2002), an elastic baffle (2003) and a card bead (2007); The installation half ring (2001) is provided with an installation groove (2002), an elastic baffle (2003) is installed at the opening of the installation groove (2002), and a plurality of clamping beads (2007) are evenly distributed on one side of the arc plate (2004) close to the installation half ring (2001).

8. The high-voltage cable partial discharge detection device according to claim 5, characterized in that: The cleaning assembly (21) comprises an upper sleeve (2101), a lower sleeve (2102), a turntable gear (2103), an eccentric rod (2104), a slider (2105), a first connecting rod (2106), a lower reciprocating plate (2107), a first cleaning brush (2108), a socket plate (2109), a second connecting rod (2110), an upper reciprocating plate (2111), a second cleaning brush (2112), a synchronous plug plate (2113) and a retractable connecting rod (2114); A lower sleeve (2102) is installed on the outer wall of the lower box (1) near the main drive motor (2), and two turntable gears (2103) are symmetrically installed in the lower box (1). The two turntable gears (2103) are respectively engaged with two transmission gears (6). An eccentric rod (2104) is eccentrically installed on the turntable gear (2103), and a slider (2105) is slidably installed on the end of the eccentric rod (2104). The slider (2105) is connected to the lower box (1) through a telescopic connecting rod (2114). A first connecting rod (2106) is installed on the side of the slider (2105) near the lower sleeve (2102). The two first connecting rods (2106) are connected to the lower reciprocating plate (2114). 07), a first cleaning brush is installed on the lower reciprocating plate (2107), an upper sleeve (2101) is installed on the upper box body (15), the upper sleeve (2101) and the lower sleeve (2102) are located on the same vertical plane, a socket plate (2109) is installed on the side of the slider (2105) away from the main drive motor (2), an upper reciprocating plate (2111) is slidably installed on the upper sleeve (2101), a second cleaning brush (2112) is installed on the upper reciprocating plate (2111), a second connecting rod (2110) is symmetrically installed on the side of the upper reciprocating plate (2111) close to the upper box body (15), and a synchronous plug plate (2113) is installed at the end of the second connecting rod (2110).

9. A high-voltage cable partial discharge detection device according to claim 8, characterized in that: A cable (23) is placed between the upper box (15) and the lower box (1), and the openings of the upper box (15) and the lower box (1), the upper detection half ring (17), the lower detection half ring (16), the installation half ring (2001), the upper sleeve (2101) and the lower sleeve (2102) are all coaxial with the cable (23).

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