A cable partial discharge noise signal monitoring device

Abstract

This invention provides a cable partial discharge noise signal monitoring device, relating to the field of power equipment condition monitoring technology. It includes: a bottom housing with a set of bolt mounting holes on its side; a top housing mounted on the top of the bottom housing; a set of locking pins mounted on the sides of both the bottom and top housings; a support plate on the side of the top housing; an electric motor mounted on one side of the support plate; and a driven shaft mounted on one side of the top housing. A threaded rod cooperates with a self-locking clamping seat to achieve symmetrical clamping and self-locking of the cable, preventing cable displacement. The greater the tensile force of the cable, the more stable the clamping seat's grip on the cable. An inflatable airbag flexibly conforms to the cable, achieving centering and sealing, preventing dust from entering the cable monitoring area. The airbag also has a sound insulation effect, preventing external vibrations from affecting cable monitoring and avoiding damage to the insulation layer.

Description

Technical Field

[0001] This invention relates to the field of power equipment condition monitoring technology, and in particular to a cable partial discharge noise signal monitoring device. Background Technology

[0002] In power systems, cables serve as the core carriers of electrical energy transmission, and their operating status directly affects the stability and security of power supply. Partial discharge is a crucial early warning signal of cable insulation aging and damage. Monitoring partial discharge noise signals can promptly detect potential cable problems and prevent the escalation of faults. However, existing cable partial discharge noise signal monitoring devices still have many prominent shortcomings, as follows: Traditional devices often use rigid clamping or simple binding for fixation, which is difficult to adapt to cables of different thicknesses. Furthermore, slight displacement of the cable can cause changes in the distance between the monitoring sensor and the cable, affecting the accuracy of partial discharge noise signal acquisition. Some clamping structures can also damage the cable insulation layer, causing new safety hazards. The signal monitor lacks a precise positioning and fixing structure, and is prone to displacement due to vibration after installation, which can lead to signal acquisition distortion. At the same time, the poor internal sealing performance of the device allows external dust and moisture to enter, which can affect sensor performance and further reduce monitoring reliability. In summary, existing cable partial discharge noise signal monitoring devices suffer from problems such as unstable clamping, low monitoring accuracy, poor operational stability, low automation, and inconvenient maintenance. There is an urgent need to design a monitoring device that features stable clamping, accurate positioning, efficient heat dissipation and cleaning, high automation, and convenient maintenance. Summary of the Invention

[0003] This invention relates to a cable partial discharge noise signal monitoring device, which adopts a self-locking clamping and airbag centering structure, adaptable to cables of different thicknesses, providing a stable clamping effect without damaging the insulation layer; precise sensor positioning ensures accurate acquisition of partial discharge noise signals; fan cooling and automatic cleaning are linked to prevent high-temperature failure of components and mesh clogging; the electric motor enables multi-functional automatic power switching, achieving a high degree of automation; modular design and convenient disassembly structure reduce maintenance difficulty and operating costs; the overall structure is stable and durable, adaptable to various monitoring conditions.

[0004] This invention provides a cable partial discharge noise signal monitoring device, specifically comprising: a bottom housing, wherein a set of bolt mounting holes are formed on the side of the bottom of the bottom housing; a top housing is mounted on the upper end of the bottom housing; a set of locking pins are mounted on the sides of the bottom housing and the top housing; a support plate is provided on the side of the top housing; an electric motor is mounted on one side of the support plate; a driven shaft is mounted on one side of the top housing; a set of symmetrically distributed positioning blocks are provided on the outer side of the top housing; a third positioning rod is installed through the inside of the positioning blocks; a clamping seat is mounted on one side of the third positioning rod; an electromagnet is mounted on the outer side of the top housing; a vertical support rod is installed through the middle of one side of the top housing; a support spring is mounted on the outer side of the support rod; a stabilizing plate is provided at the bottom of the support rod; and a signal monitor and an airflow sensor are mounted on the inner side of the stabilizing plate.

[0005] Furthermore, an annular groove is formed at the upper end of the locking pin, and a clamping groove is formed at the bottom of the clamping seat. The clamping groove has a U-shaped structure. A set of inclined blocks is provided at the side of the clamping groove at the bottom of the clamping seat. The side of the clamping groove of the clamping seat extends into the interior of the annular groove. The clamping seat includes a third positioning rod. A support spring is installed at the outer side of the third positioning rod. The support spring is located between the positioning block and the clamping seat.

[0006] Furthermore, a fan is installed on the inner side of the top housing, an exhaust mesh is opened on one side of the top housing and the exhaust mesh is connected to the fan, and a set of air intake meshes are opened on the other side of the top housing. The air intake meshes have a fan-shaped structure.

[0007] Furthermore, a clamping plate is installed on one side of the stabilizing plate. The stabilizing plate includes a fourth positioning rod, which is located on one side of the stabilizing plate. A sliding hole is opened on one side of the clamping plate, through which the fourth positioning rod passes. A retaining ring is installed on one side of the fourth positioning rod, and a support spring is installed on the outer side of the fourth positioning rod, with the support spring located between the retaining ring and the clamping plate.

[0008] Furthermore, a set of stabilizing blocks are provided on the inner side of the stabilizing plate and the clamping plate respectively. The stabilizing blocks are rectangular in structure. A stabilizing groove is opened on both sides of the signal monitor and the airflow sensor. The stabilizing grooves correspond to the stabilizing blocks. The stabilizing blocks extend into the interior of the stabilizing grooves. The airflow sensor is close to the airbag.

[0009] Furthermore, a first positioning plate is provided on the inner side of the top shell. The first positioning plate has a rectangular structure, and the side of the first positioning plate corresponds to the side of the stabilizing plate, with an allowable movement gap of about one millimeter between the first positioning plate and the stabilizing plate.

[0010] Furthermore, a rotatably connected threaded rod is installed inside the top housing. The threaded rod has a bidirectional thread structure. A mating sleeve is installed on one side of the threaded rod. A set of positioning grooves distributed in a ring array are opened on one side of the threaded rod. The positioning grooves have an arc structure. A set of arc protrusions are provided on the inner side of the mating sleeve. The arc protrusions extend into the interior of the positioning grooves.

[0011] Furthermore, the drive shaft of the electric motor is provided with a docking block on one side, and a set of docking grooves distributed in a ring array are opened on the periphery of the docking block. The docking grooves are arc-shaped. A set of docking protrusions are provided on the inner side of the docking sleeve. The docking protrusions are arc-shaped and extend into the interior of the docking groove. A support spring is installed on one side of the docking sleeve.

[0012] Furthermore, the docking sleeve includes an iron plate, which is disposed on one side of the docking sleeve, and the iron plate and the electromagnet are aligned.

[0013] Furthermore, two symmetrically distributed sliding seats are installed on the inner side of the bottom housing. A hidden groove is opened at the upper end of the sliding seat, and two nuts are installed inside the hidden groove. The hidden groove and the nuts correspond to each other and the hidden groove is used to position the nuts circumferentially. A rotating hole is opened at the upper end of the sliding seat and is aligned with the nuts. A threaded rod passes through the rotating hole and is threadedly connected to the two nuts respectively.

[0014] Furthermore, a sliding block is provided at the bottom of the sliding seat. The sliding block has a T-shaped structure, and a sliding groove is opened on the inner side of the bottom housing. The sliding groove has a T-shaped structure, and the sliding block extends into the interior of the sliding groove.

[0015] Furthermore, a second positioning plate with a movable connection is installed on the inner side of the sliding seat. The second positioning plate has a rectangular structure. A clamping seat is installed on one side of the second positioning plate. A first positioning rod is provided in the middle of one side of the clamping seat. An oval hole is opened in the middle of the second positioning plate. A sliding hole corresponding to the second positioning plate is opened in the middle of the clamping seat. The second positioning plate passes through the interior of the oval hole and the sliding hole in sequence. A support spring is installed on the outer side of the first positioning rod. The support spring is located between the second positioning plate and the sliding seat.

[0016] Furthermore, a V-shaped groove is provided on one side of the second positioning plate, and a trapezoidal block is provided on one side of the clamping seat. The trapezoidal block extends into the interior of the V-shaped groove, and a clamping groove is provided on the inner side of the clamping seat. The clamping groove has a V-shaped structure.

[0017] Furthermore, a cam and a set of symmetrically distributed air pumps are installed on one side of the top housing. A rotating shaft is provided in the middle of the cam, which passes through the interior of the top housing. A set of gears is installed between the threaded rod and the rotating shaft of the cam. The gear set has a multi-stage speed-increasing structure. A set of friction rollers is installed on the side of the cam. The air pumps are distributed on both sides of the cam. A push rod is installed on one side of the air pump, and the side of the push rod contacts the friction rollers.

[0018] Furthermore, each of the bottom and top shells has an arc plate on its two sides. An airbag is installed on the inner side of the arc plate, and a positioning groove is opened on the inner side of the arc plate. The airbag extends into the positioning groove, and a drainage tube is installed on the outer side of the airbag. One side of the drainage tube is connected to an air pump. The electric motor, docking sleeve, iron plate, threaded rod, sliding seat, nut, second positioning plate, clamping seat, first positioning rod, gear set, cam, airbag, drainage tube, and air pump cooperate to form a clamping mechanism.

[0019] Furthermore, an incomplete gear is installed on one side of the driven shaft, and a gear is installed on one side of the drive shaft of the electric motor. A drive rod is provided on one side of the driven shaft, and two sliding holes are opened inside the drive rod. Two second positioning rods are installed through the sliding holes. A cleaning strip is provided on one side of the two second positioning rods. A support spring is installed on the outer side of the second positioning rods. The support spring is located between the drive rod and the cleaning strip. A torsion spring is installed on one side of the driven shaft. The driven shaft, drive rod, second positioning rods, and cleaning strip cooperate with each other to form a cleaning structure.

[0020] This invention provides a cable partial discharge noise signal monitoring device, which has the following beneficial effects: The signal monitoring device of this invention provides stable clamping, precise positioning, and high monitoring accuracy. The threaded rod and self-locking clamping seat work together to achieve symmetrical clamping and self-locking of the cable, preventing cable displacement. The greater the tensile force of the cable, the more stable the clamping seat's grip on the cable. The inflated airbag flexibly conforms to the cable, achieving centering and sealing, preventing dust from entering the cable's monitoring position. The airbag also provides sound insulation, preventing external vibrations from affecting cable monitoring and avoiding damage to the insulation layer. The sensor is precisely positioned via a stabilizing block and groove, facilitating installation and maintenance. A spring press keeps the sensor in constant contact with the cable, ensuring a stable distance and improving the accuracy of partial discharge noise signal acquisition. Sharing the same drive component with the clamping seat and airbag reduces energy consumption and maintenance / operation steps.

[0021] The signal monitoring device in this invention has efficient heat dissipation and strong operational stability; the fan and the fan-shaped air intake mesh work together to form an efficient heat dissipation airflow, avoiding high-temperature failure of electronic components; the driving force of the clamping seat simultaneously drives the cleaning structure to rotate, and the cleaning structure realizes automatic intermittent cleaning of the air intake mesh, preventing dust blockage without manual intervention.

[0022] The signal monitoring device in this invention is highly automated and easy to operate; the electric motor achieves automatic power switching for clamping, heat dissipation, and cleaning functions through the docking sleeve, simplifying the process; all functions operate in coordination, adapting to cables of different thicknesses and working conditions, eliminating the need for manual parameter adjustment, and greatly improving efficiency.

[0023] The signal monitoring device of this invention is easy to disassemble and maintain, and has low operating costs; the hinged housing and modular design facilitate device disassembly and component replacement; core components can be disassembled and replaced individually, eliminating the need for overall replacement after wear, thus reducing operating costs; the quick locking and unlocking structure of the sensor and transmission components further enhances maintenance convenience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0025] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0026] In the attached diagram: Figure 1 A schematic diagram of the overall axonometric structure of the signal monitoring device of the present invention is shown; Figure 2 The present invention is shown Figure 1 A schematic diagram of the axonal structure from the rear view; Figure 3 A schematic diagram of the axial structure of the signal monitoring device of the present invention after disassembly is shown; Figure 4 A partial axonometric structural schematic diagram of the signal monitoring device of the present invention is shown; Figure 5 A schematic diagram of the cross-sectional axial structure of the signal monitoring device of the present invention is shown; Figure 6 A schematic diagram of the axial side structure of the signal monitoring device of the present invention after further cross-section is shown; Figure 7 The present invention is shown Figure 6 A schematic diagram of the axonal structure from the rear view; Figure 8 A schematic diagram of the axial structure of the bottom shell and top shell after cross-section is shown. Figure 9A schematic diagram of the top shell and the axial side structure of the airbag after cross-section is shown. Figure 10 A schematic diagram of the stabilizing plate, signal monitor, and airflow sensor axial structure of the present invention is shown. Figure 11 A schematic diagram of the axial side structure of the clamping mechanism of the present invention after partial cross-section is shown; Figure 12 This invention shows a cross-section of the sliding seat and a schematic diagram of the split axial structure of the clamping seat; Figure 13 The present invention is shown Figure 11 A magnified structural diagram at point A.

[0027] List of reference numerals 1. Bottom housing; 101. Locking pin; 2. Top housing; 201. Fan; 202. First positioning plate; 203. Positioning block; 3. Clamping mechanism; 301. Electric motor; 302. Docking sleeve; 30201. Iron plate; 303. Threaded rod; 304. Sliding seat; 305. Nut; 306. Second positioning plate; 307. Clamping seat; 308. First positioning rod; 309. Gear set; 310. Cam; 311. Airbag; 312. Drainage tube; 313. Air pump; 4. Cleaning structure; 401. Driven shaft; 402. Drive rod; 403. Second positioning rod; 404. Cleaning strip; 5. Clamping seat; 501. Third positioning rod; 6. Electromagnet; 7. Support rod; 701. Stabilizing plate; 70101. Fourth positioning rod; 702. Clamping plate; 8. Signal monitor; 9. Airflow sensor. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figures 1 to 13 : This invention proposes a cable partial discharge noise signal monitoring device, comprising: a bottom housing 1, with a set of bolt mounting holes on the side of the bottom of the bottom housing 1; a top housing 2 mounted on the upper end of the bottom housing 1; a set of locking pins 101 mounted on the sides of the bottom housing 1 and the top housing 2; a support plate provided on the side of the top housing 2; an electric motor 301 mounted on one side of the support plate; a driven shaft 401 mounted on one side of the top housing 2; a set of symmetrically distributed positioning blocks 203 provided on the outer surface of the top housing 2; a third positioning rod 501 penetratingly mounted inside the positioning blocks 203; and a third positioning rod 501 on one side of the third positioning rod 501. A clamping seat 5 is installed. An annular groove is opened at the upper end of the locking pin 101. A clamping groove is opened at the bottom of the clamping seat 5. The clamping groove has a U-shaped structure. A set of inclined blocks is provided on the side of the clamping groove at the bottom of the clamping seat 5. The side of the clamping groove of the clamping seat 5 extends into the interior of the annular groove. The clamping seat 5 includes a third positioning rod 501. A support spring is installed on the outer side of the third positioning rod 501. The support spring is located between the positioning block 203 and the clamping seat 5. Specifically, the support spring pushes the clamping seat 5 to press the locking pin 101, preventing the connection between the bottom housing 1 and the top housing 2 from loosening, and ensuring the overall sealing and structural stability of the device. In this embodiment, a rotatably connected threaded rod 303 is installed inside the top housing 2. The threaded rod 303 has a bidirectional thread structure. A mating sleeve 302 is installed on one side of the threaded rod 303. A set of positioning grooves arranged in a circular array are formed on one side of the threaded rod 303. The positioning grooves have an arc structure. A set of arc protrusions are provided on the inner side of the mating sleeve 302, extending into the interior of the positioning grooves. The positioning grooves, together with the arc protrusions, achieve the effect of circumferential positioning between the mating sleeve 302 and the threaded rod 303. In addition, with the cooperation of the positioning grooves and the arc protrusions, the mating sleeve 302 can move laterally. The threaded rod 303 and the mating sleeve 302 can rotate synchronously, adapting to the connection requirements of different transmission scenarios. The drive shaft of the electric motor 301 has a mating block on one side. A set of mating grooves arranged in a circular array are formed on the periphery of the mating block. The mating grooves have an arc structure. A set of mating protrusions are provided on the inner side of the mating sleeve 302. The docking protrusion has an arc structure and extends into the interior of the docking groove. A support spring is installed on one side of the docking sleeve 302. The support spring pushes the docking sleeve 302 closer to the drive shaft of the electric motor 301. The docking sleeve 302, together with the docking groove and the docking protrusion, achieves the effect of automatic connection between the drive shaft and the threaded rod 303. The docking sleeve 302 includes an iron plate 30201, which is located on one side of the docking sleeve 302. The iron plate 30201 and the electromagnet 6 are aligned. When the electromagnet 6 is energized, it attracts the iron plate 30201. At this time, the iron plate 30201 drives the docking sleeve 302 away from the drive shaft of the electric motor 301, achieving the effect of automatic separation between the drive shaft of the electric motor 301 and the docking sleeve 302. At this time, the electric motor 301 can drive the cleaning structure 4 to rotate independently. The drive position of the electric motor 301 can be automatically switched without manual intervention, simplifying the operation process, improving the automation level of the device, and adapting to the needs of different working scenarios. In this embodiment, two symmetrically distributed sliding seats 304 are installed on the inner side of the bottom housing 1. A hidden groove is formed at the upper end of the sliding seat 304, and two nuts 305 are installed inside the hidden groove. The hidden groove facilitates the individual replacement of the nuts 305 after they wear out. The hidden groove corresponds to the nuts 305 and provides circumferential positioning for the nuts 305. A rotating hole is formed at the upper end of the sliding seat 304, which is aligned with the nuts 305. A threaded rod 303 passes through the rotating hole and is threadedly connected to the two nuts 305 respectively. When the threaded rod 303 rotates, it can drive the two sliding seats 304 to move synchronously in opposite directions. A sliding block is provided at the bottom of the sliding seat 304. The sliding block has a T-shaped structure. A sliding groove is formed on the inner side of the bottom housing 1. The sliding groove has a T-shaped structure, and the sliding block extends into the interior of the sliding groove. Specifically, the sliding block and the sliding groove cooperate to guide the movement of the sliding seat 304, ensuring that the sliding seat 304 moves along a straight line. Stable movement; A second positioning plate 306 is movably connected to the inner side of the sliding seat 304. The second positioning plate 306 has a rectangular structure. A clamping seat 307 is installed on one side of the second positioning plate 306. A first positioning rod 308 is provided in the middle of one side of the clamping seat 307. An oval hole is opened in the middle of the second positioning plate 306. A sliding hole corresponding to the second positioning plate 306 is opened in the middle of the clamping seat 307. The second positioning plate 306 passes through the interior of the oval hole and the sliding hole in sequence. A support spring is installed on the outer side of the first positioning rod 308. The support spring is located between the second positioning plate 306 and the sliding seat 304. The support spring pushes the second positioning plate 306 and the clamping seat 307 to move inward. The support spring provides a continuous clamping force for the clamping seat 307, so that the clamping seat 307 can flexibly clamp the cable. The oval hole provides lateral sliding space for the clamping seat 307, improving the clamping stability of the cable. In this embodiment, a V-shaped groove is formed on one side of the second positioning plate 306, and a trapezoidal block is provided on one side of the clamping seat 307, extending into the interior of the V-shaped groove. A clamping groove with a V-shaped structure is formed on the inner side of the clamping seat 307. The two clamping seats 307 cooperate with each other to quickly clamp cables of different thicknesses. When the cable is subjected to tensile force and displacement, it will drive the clamping seat 307 to move. At this time, the trapezoidal block and the V-shaped groove squeeze each other to generate thrust, making the clamping seat 307 clamp the cable more stably. The structure of the trapezoidal block and the V-shaped groove forms a self-locking effect. The greater the force on the cable, the more firmly the clamping seat 307 clamps it, effectively preventing the cable from slipping and ensuring the monitoring process. The continuity is maintained; a cam 310 and a set of symmetrically distributed air pumps 313 are installed on one side of the top housing 2. A rotating shaft is provided in the middle of the cam 310, which passes through the interior of the top housing 2. A set of gears 309 is installed between the threaded rod 303 and the rotating shaft of the cam 310. The gears 309 are multi-stage speed-increasing structures. When the threaded rod 303 rotates slightly, it can drive the cam 310 to rotate quickly. A set of friction rollers is installed on the side of the cam 310. The air pumps 313 are distributed on both sides of the cam 310. A push rod is installed on one side of the air pump 313. The side of the push rod contacts the friction roller. The friction roller squeezes the push rod of the air pump 313 to solidify. The airbag 311 is automatically inflated; the two air pumps 313 work synchronously to improve inflation efficiency and provide stable power for inflating the airbag 311, eliminating the need for an additional power source and simplifying the device structure; each side of the bottom shell 1 and the top shell 2 is provided with an arc plate, which, when combined, form a cylindrical sleeve structure. The airbag 311 is installed on the inner side of the arc plate, and a positioning groove is opened on the inner side of the arc plate, into which the airbag 311 extends. A drainage tube 312 is installed on the outer side of the airbag 311, and one side of the drainage tube 312 is connected to the air pump 313. An electric motor 301, a docking sleeve 302, and an iron plate 3 are also included. The clamping mechanism 3 consists of 301, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, and 313. The components work together to form the clamping mechanism 3. Specifically, the airbag 311, after inflation, fits tightly against the cable surface, achieving flexible clamping and gap sealing, preventing damage to the cable insulation layer and preventing external dust from entering the bottom housing 1 and top housing 2. The components of the clamping mechanism 3 work together to achieve automatic cable centering, adaptive clamping, and locking, improving clamping efficiency and stability, and providing reliable protection for signal monitoring. In this embodiment, an incomplete gear is installed on one side of the driven shaft 401, and a gear is installed on one side of the drive shaft of the electric motor 301. The electric motor 301 drives the driven shaft 401 to rotate intermittently. A drive rod 402 is provided on one side of the driven shaft 401. Two sliding holes are opened inside the drive rod 402, and two second positioning rods 403 are installed through the sliding holes. A cleaning strip 404 is provided on one side of the two second positioning rods 403. The second positioning rods 403 circumferentially position the cleaning strip 404, thereby causing the driven shaft 401 to rotate. The cleaning strip 404 rotates intermittently. A support spring is installed on the outer side of the second positioning rod 403. The support spring is located between the drive rod 402 and the cleaning strip 404. The support spring pushes the cleaning strip 404 to flexibly fit the air intake mesh. A torsion spring is installed on one side of the driven shaft 401. The torsion spring supports the cleaning structure 4 to return to its original position. The driven shaft 401, drive rod 402, second positioning rod 403, and cleaning strip 404 cooperate with each other to form the cleaning structure 4. The cleaning strip 404 rotates intermittently to clean the dust from the mesh, preventing the mesh from becoming clogged and affecting heat dissipation. In this embodiment, a clamping plate 702 is installed on one side of the stabilizing plate 701. The stabilizing plate 701 includes a fourth positioning rod 70101, which is located on one side of the stabilizing plate 701. A sliding hole is formed on one side of the clamping plate 702, through which the fourth positioning rod 70101 passes. A retaining ring is installed on one side of the fourth positioning rod 70101, and a support spring is installed on the outer side of the fourth positioning rod 70101. The support spring is located between the retaining ring and the clamping plate 702. Specifically, the support spring pushes the clamping plate 702 to engage with the stabilizing plate 701. The combination enables the signal monitor 8 and the airflow sensor 9 to be quickly clamped and fixed, and also facilitates the maintenance of the signal monitor 8 and the airflow sensor 9; a first positioning plate 202 is provided on the inner side of the top housing 2. The first positioning plate 202 has a rectangular structure, and the side of the first positioning plate 202 corresponds to the side of the stabilizing plate 701, leaving an active gap of about one millimeter between the first positioning plate 202 and the stabilizing plate 701. Specifically, the first positioning plate 202 provides a limiting reference for the stabilizing plate 701, ensuring that the signal monitor 8 and the cable maintain an appropriate distance, thereby improving the monitoring sensitivity; In this embodiment, an electromagnet 6 is installed on the outer side of the top housing 2. A vertical support rod 7 is installed through the middle of one side of the top housing 2. A support spring is installed on the outer side of the support rod 7. A stabilizing plate 701 is provided at the bottom of the support rod 7. The support spring elastically presses the stabilizing plate 701 downward. A signal monitor 8 and an airflow sensor 9 are installed on the inner side of the stabilizing plate 701. A set of stabilizing blocks are respectively provided on the inner side of the stabilizing plate 701 and the clamping plate 702. The stabilizing blocks have a rectangular structure. A stabilizing groove is opened on both sides of the signal monitor 8 and the airflow sensor 9. The stabilizing grooves correspond to the stabilizing blocks. The stabilizing blocks extend into the interior of the stabilizing grooves. The airflow sensor 9 is close to the airbag 311. Specifically, the stabilizing blocks and... The precise fit of the stabilizing slots enables rapid positioning of the signal monitor 8 and the airflow sensor 9. The airflow sensor 9, located near the airbag 311, can monitor the airflow changes around the airbag 311 in real time, assisting in determining the cable clamping status. A fan 201 is installed on the inner side of the top housing 2. An exhaust mesh is opened on one side of the top housing 2, which is connected to the fan 201. A set of air inlet meshes is opened on the other side of the top housing 2. The air inlet meshes have a fan-shaped structure. Specifically, the fan 201 drives the airflow to enter through the air inlet meshes and exit through the exhaust meshes, forming a cooling airflow inside the device to prevent electronic components such as the signal monitor 8 from failing due to high temperatures. The fan-shaped air inlet meshes increase the air intake area while reducing the entry of impurities, ensuring heat dissipation efficiency.

[0030] Example 2, based on Example 1, such as Figures 1-12 As shown, a conventional dehumidifier plate with good air permeability can be installed inside the air inlet mesh of the top housing 2.

[0031] Example 3, based on Example 1, such as Figures 1-12 As shown, a pressure relief nozzle is installed on one side of the drainage tube 312 as needed to release the air pressure of the airbag 311, thereby facilitating the removal of the cable.

[0032] The working principle of this embodiment: First, assemble and seal the device. Connect the bottom housing 1 and the top housing 2 and fix them initially with locking pin 101. Under the push of the support spring, the inclined block of the clamping seat 5 is embedded in the annular groove of the locking pin 101 to achieve the sealing of the housing. Place the signal monitor 8 and the airflow sensor 9 between the stabilizing plate 701 and the clamping plate 702. The support spring pushes the clamping plate 702 to clamp the sensor. The stabilizing block and the stabilizing groove are precisely matched to complete the positioning of the signal monitor 8 and the airflow sensor 9. The cable is passed through the cylindrical sleeve composed of the bottom housing 1 and the top housing 2. The electric motor 301 is started. Under the action of the support spring, the docking protrusion of the docking sleeve 302 is embedded into the docking groove of the drive shaft of the electric motor 301 to achieve power connection. The electric motor 301 drives the threaded rod 303 to rotate. The bidirectional thread drives the sliding seats 304 on both sides to move inward synchronously. The clamping seat 307 initially clamps the cable. At the same time, the threaded rod 303 drives the cam 310 to rotate rapidly through the gear set 309, squeezing the push rod of the air pump 313. The air is inflated into the air bag 311 through the drainage tube 312. After the air bag 311 expands, it fits tightly against the surface of the cable to achieve flexible centering and locking. When the cable is under tension and has a tendency to displace, the trapezoidal block of the clamping seat 307 is squeezed by the V-groove of the second positioning plate 306 to generate a self-locking force, which further improves the clamping stability. The signal monitor 8 maintains contact with the cable to accurately collect partial discharge noise signals; the airflow sensor 9 monitors the airflow changes around the airbag 311 in real time to help determine the cable clamping status and ensure the stability of the monitoring process. When the fan 201 is started, airflow enters the device through the fan-shaped air intake mesh, carrying away the heat generated by the electronic components and dissipating it through the exhaust mesh, forming a stable heat dissipation cycle. When the air intake mesh needs to be cleaned, the electromagnet 6 is energized to attract the iron plate 30201 of the docking sleeve 302, causing the docking sleeve 302 to separate from the drive shaft of the electric motor 301. The electric motor 301 drives the driven shaft 401 of the cleaning structure 4 to rotate intermittently. Under the action of the support spring, the cleaning strip 404 flexibly fits into the air intake mesh to remove dust and impurities. The torsion spring drives the cleaning strip 404 to reset, realizing automatic cleaning of the mesh. When the cable needs to be disassembled, release the air pressure inside the airbag 311 through the pressure relief nozzle, start the electric motor 301 in reverse, and the clamping seat 307 will release the cable to remove it; when replacing the sensor, pull the clamping plate 702 to compress the support spring to unlock the sensor; when replacing worn parts, the corresponding parts can be disassembled separately after opening the housing, without the need for overall disassembly, making maintenance convenient. This device achieves integrated fulfillment of multiple core requirements through a fully coordinated process encompassing housing sealing, precise sensor positioning, cable self-centering clamping, noise signal acquisition, integrated heat dissipation and cleaning, and convenient maintenance and disassembly. It ensures monitoring accuracy with dual sealing and precise positioning, guarantees cable stability and prevents damage with self-locking clamping and airbag 311 centering, maintains long-term stable operation with fan 201 heat dissipation and automatic cleaning, and enhances automation and reduces maintenance costs with electric motor 301 power switching and modular design. It comprehensively covers the core needs of cable monitoring and is adaptable to various operating conditions.

Claims

1. A cable partial discharge noise signal monitoring device, characterized in that, include: The bottom housing (1) has a set of bolt mounting holes on its side. A top housing (2) is installed on the upper end of the bottom housing (1). A set of locking pins (101) is installed on the side of the bottom housing (1) and the top housing (2). A fan (201) is installed on the inner side of the top housing (2). An exhaust mesh hole is opened on one side of the top housing (2), and the exhaust mesh hole is connected to the fan (201). An air intake mesh hole is opened on the other side of the top housing (2). A support plate is provided on the side of the top housing (2). An electric motor (301) is installed on one side of the support plate. A driven shaft (401) is installed. A set of symmetrically distributed positioning blocks (203) are provided on the outer side of the top housing (2). A third positioning rod (501) is installed through the inside of the positioning block (203). A clamping seat (5) is installed on one side of the third positioning rod (501). An electromagnet (6) is installed on the outer side of the top housing (2). A vertical support rod (7) is installed through the middle of one side of the top housing (2). A support spring is installed on the outer side of the support rod (7). A stabilizing plate (701) is provided at the bottom of the support rod (7). A signal monitor (8) and an airflow sensor (9) are installed on the inner side of the stabilizing plate (701).

2. The cable partial discharge noise signal monitoring device according to claim 1, characterized in that, The upper end of the locking pin (101) has an annular groove, and the bottom of the clamping seat (5) has a clamping groove. The bottom of the clamping seat (5) has a set of inclined blocks on the side of the clamping groove. The side of the clamping groove of the clamping seat (5) extends into the interior of the annular groove. The clamping seat (5) includes a third positioning rod (501). A support spring is installed on the outer side of the third positioning rod (501). The support spring is located between the positioning block (203) and the clamping seat (5).

3. The cable partial discharge noise signal monitoring device according to claim 1, characterized in that, A clamping plate (702) is installed on one side of the stabilizing plate (701). The stabilizing plate (701) includes a fourth positioning rod (70101). The fourth positioning rod (70101) is located on one side of the stabilizing plate (701). A sliding hole is opened on one side of the clamping plate (702). The fourth positioning rod (70101) passes through the interior of the sliding hole. A retaining ring is installed on one side of the fourth positioning rod (70101). A support spring is installed on the outer side of the fourth positioning rod (70101). The support spring is located between the retaining ring and the clamping plate (702). A set of stabilizing blocks are respectively provided on the inner side of the stabilizing plate (701) and the clamping plate (702). The stabilizing blocks are rectangular structures. A stabilizing groove is opened on both sides of the signal monitor (8) and the airflow sensor (9). The stabilizing groove and the stabilizing block correspond to each other. The stabilizing block extends into the interior of the stabilizing groove. The airflow sensor (9) is close to the airbag (311).

4. The cable partial discharge noise signal monitoring device according to claim 1, characterized in that, The top shell (2) has a first positioning plate (202) on its inner side. The first positioning plate (202) is rectangular. The side of the first positioning plate (202) corresponds to the side of the stabilizing plate (701). A movable gap of about one millimeter is reserved between the first positioning plate (202) and the stabilizing plate (701).

5. The cable partial discharge noise signal monitoring device according to claim 1, characterized in that, The top housing (2) is equipped with a rotatably connected threaded rod (303). The threaded rod (303) has a bidirectional thread structure. A mating sleeve (302) is installed on one side of the threaded rod (303). A set of positioning grooves distributed in a ring array are opened on one side of the threaded rod (303). The positioning grooves have an arc structure. A set of arc protrusions are provided on the inner side of the mating sleeve (302). The arc protrusions extend into the interior of the positioning grooves.

6. The cable partial discharge noise signal monitoring device according to claim 1, characterized in that, The drive shaft of the electric motor (301) has a docking block on one side. A set of docking grooves arranged in a ring array are opened on the periphery of the docking block. The docking grooves are arc-shaped. A set of docking protrusions are provided on the inner side of the docking sleeve (302). The docking protrusions are arc-shaped and extend into the interior of the docking groove. A support spring is installed on one side of the docking sleeve (302). The docking sleeve (302) includes an iron plate (30201). The iron plate (30201) is located on one side of the docking sleeve (302). The iron plate (30201) and the electromagnet (6) are aligned.

7. The cable partial discharge noise signal monitoring device according to claim 1, characterized in that, Two symmetrically distributed sliding seats (304) are installed on the inner side of the bottom housing (1). A hidden groove is opened at the upper end of the sliding seat (304). Two nuts (305) are installed inside the hidden groove. The hidden groove and the nuts (305) correspond to each other. The hidden groove is circumferentially positioned for the nuts (305). A rotating hole is opened at the upper end of the sliding seat (304) and aligned with the nuts (305). A threaded rod (303) passes through the rotating hole and is threadedly connected to the two nuts (305) respectively. A sliding block is provided at the bottom of the sliding seat (304). A sliding groove is opened on the inner side of the bottom housing (1). The sliding block extends into the interior of the sliding groove.

8. The cable partial discharge noise signal monitoring device according to claim 7, characterized in that, A second positioning plate (306) is movably connected to the inner side of the sliding seat (304). The second positioning plate (306) has a rectangular structure. A clamping seat (307) is installed on one side of the second positioning plate (306). A first positioning rod (308) is provided in the middle of one side of the clamping seat (307). An oval hole is opened in the middle of the second positioning plate (306). A sliding hole corresponding to the second positioning plate (306) is opened in the middle of the clamping seat (307). The second positioning plate (306) passes through the interior of the oval hole and the sliding hole in sequence. A support spring is installed on the outer side of the first positioning rod (308). The support spring is located between the second positioning plate (306) and the sliding seat (304). A V-shaped groove is opened on one side of the second positioning plate (306). A trapezoidal block is provided on one side of the clamping seat (307). The trapezoidal block extends into the interior of the V-shaped groove. A clamping groove is opened on the inner side of the clamping seat (307).

9. The cable partial discharge noise signal monitoring device according to claim 1, characterized in that, A cam (310) and a set of symmetrically distributed air pumps (313) are installed on one side of the top housing (2). A rotating shaft is provided in the middle of the cam (310), which passes through the interior of the top housing (2). A set of gears (309) is installed between the threaded rod (303) and the rotating shaft of the cam (310). The gears (309) are multi-stage speed-increasing structures. A set of friction rollers is installed on the side of the cam (310). The air pumps (313) are distributed on both sides of the cam (310). A push rod is installed on one side of the air pump (313), and the side of the push rod contacts the friction rollers. An arc plate is provided on each side of the bottom housing (1) and the top housing (2). The inner side of the arc plate is located on the side of the bottom housing (1) and the top housing (2). An airbag (311) is installed on the inner side of the arc plate. A positioning groove is opened on the inner side of the arc plate. The airbag (311) extends into the interior of the positioning groove. A drainage tube (312) is installed on the outer side of the airbag (311). One side of the drainage tube (312) is connected to the air pump (313). The electric motor (301), the docking sleeve (302), the iron plate (30201), the threaded rod (303), the sliding seat (304), the nut (305), the second positioning plate (306), the clamping seat (307), the first positioning rod (308), the gear set (309), the cam (310), the airbag (311), the drainage tube (312), and the air pump (313) cooperate with each other to form a clamping mechanism (3).

10. A cable partial discharge noise signal monitoring device according to claim 1, characterized in that, An incomplete gear is installed on one side of the driven shaft (401), and a gear is installed on one side of the drive shaft of the electric motor (301). A drive rod (402) is provided on one side of the driven shaft (401). Two sliding holes are opened inside the drive rod (402). Two second positioning rods (403) are installed through the sliding holes. A cleaning strip (404) is provided on one side of the two second positioning rods (403). A support spring is installed on the outer side of the second positioning rod (403). The support spring is located between the drive rod (402) and the cleaning strip (404). A torsion spring is installed on one side of the driven shaft (401). The driven shaft (401), drive rod (402), second positioning rod (403), and cleaning strip (404) cooperate with each other to form a cleaning structure (4).

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