A partial discharge detection device for power switch cabinet

Abstract

The invention discloses a partial discharge detection device for an electric power switch cabinet, and the invention relates to the field of discharge detection technology, comprising a flat square plate, the direction of which is arranged parallel to the direction of ultrasonic transmission, the outer surface of which is arranged with a dust-catching circular hole, one side of which is fixedly connected with a linkage rod, and both sides of which are fixedly connected with anti-blocking components. The partial discharge detection device for an electric power switch cabinet prevents the dust-catching plate between an ultrasonic sensor and an electrical component from blocking ultrasonic transmission over a large area when not working by arranging the flat square plate into a rectangular flat sheet shape and with a direction parallel to the direction of ultrasonic transmission, and facilitates dust accumulation by opening a plurality of dust-catching circular holes with smaller apertures on the rotating flat square plate, so as to prevent excessive dust from accumulating inside the electric power switch cabinet after long-term use, thereby affecting the transmission and reception of ultrasonic signals and resulting in poor discharge detection effect.

Description

Technical Field

[0001] The invention relates to the technical field of discharge detection, and in particular to a partial discharge detection device for a power switch cabinet. Background Art

[0002] Power switchgear is an important infrastructure in urban distribution network. The stability of its operation directly affects the development of urban economy and the improvement of people's living standards. Therefore, the reliability of switchgear equipment directly determines the reliability of power supply to users. In the operation of switchgear, there are differences in the electric field strength of various parts of the switchgear. Once the electric field strength in a certain area reaches its breakdown strength, discharge will occur in that area. However, the two conductors to which voltage is applied do not run through the entire discharge process, that is, the discharge does not break through the insulation system. This phenomenon is called partial discharge. The switchgear is often difficult to identify by naked eyes and manual touch in the partial discharge stage. If it is not handled for a long time, the severe discharge area will reach its breakdown strength and a fault will occur. Using relevant partial discharge detection equipment to perform status inspection on the operation of the switchgear can timely discover problems and perform maintenance, thereby avoiding major faults and affecting the normal operation of the system.

[0003] In the prior art, the intensity and location of partial discharge can be determined by detecting ultrasonic signals and based on the strength and frequency of the signals. However, after long-term use, too much dust often accumulates inside the power switch cabinet, which affects the transmission and reception of ultrasonic signals and results in poor discharge detection effect. Therefore, we propose a partial discharge detection device for a power switch cabinet. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a partial discharge detection device for a power switch cabinet, comprising:

[0005] A power cabinet, wherein a cabinet door is provided on one side of the power cabinet;

[0006] An ultrasonic sensor, which is used to receive ultrasonic signals emitted by electrical components;

[0007] The dust collecting mechanism is used to collect the flying dust in the area between the ultrasonic sensor and the electrical components to prevent the excessive accumulation of dust inside the power switch cabinet after long-term use, which affects the transmission and reception of ultrasonic signals and leads to poor discharge detection effect;

[0008] The side of the power cabinet close to the ultrasonic sensor is rotatably connected to the top of the cabinet door through a rotating bolt, the side of the cabinet door close to the power cabinet is fixedly connected to one side of the ultrasonic sensor, and the side of the cabinet door close to the ultrasonic sensor is rotatably connected to one end of the dust collecting mechanism through a rotating bolt;

[0009] Wherein, the dust collecting mechanism comprises:

[0010] A flat square plate, the direction of which is set parallel to the direction of ultrasonic transmission. By setting the flat square plate into a rectangular flat sheet and the direction thereof being parallel to the direction of ultrasonic transmission, the dust collecting plate between the ultrasonic sensor and the electrical component is prevented from blocking the ultrasonic transmission over a large area when not working. A dust collecting circular hole is set on the outer surface of the flat square plate. By opening a plurality of dust collecting circular holes with smaller apertures on the rotating flat square plate, dust accumulation is facilitated. This prevents excessive dust from accumulating inside the power switch cabinet after long-term use, which affects the transmission and reception of ultrasonic signals and causes poor discharge detection effect.

[0011] There are multiple dust-collecting circular holes, and the multiple dust-collecting circular holes are evenly distributed on the outer surface of the flat square plate;

[0012] A motor is fixedly connected to a side of the cabinet door away from the ultrasonic sensor, and a driving shaft of the motor is fixedly connected to an end of the dust collecting mechanism close to the cabinet door;

[0013] A linkage rod is fixedly connected to one side of the flat square plate, anti-blocking components are fixedly connected to both sides of the flat square plate, a cleaning component is fixedly connected to the outer side of the linkage rod, and V-shaped baffles are fixedly connected to both sides of the flat square plate, and a plurality of V-shaped baffles are arranged at positions aligned with the dust-catching circular holes on both sides of the flat square plate to cover the dust-catching circular holes, so as to prevent the ultrasonic signals passing through the surface of the flat square plate from being absorbed when more and more dust gradually accumulates on the surface of the flat square plate, and the V-shaped inclined surface of the V-shaped baffle is arranged to facilitate the outflow space to store the accumulated dust, so as to prevent the dust-catching circular holes from being quickly blocked by accumulation during use and being difficult to collect the surrounding dust by inclusion adsorption;

[0014] One end of the linkage rod close to the cabinet door is fixedly connected to the driving shaft of the motor, and one end of the linkage rod close to the motor is rotatably connected to one side of the cabinet door through a rotating bolt;

[0015] There are four cleaning components, and the four cleaning components are evenly distributed on the outer surface of the linkage rod. The V-shaped baffles are arranged on both sides of the flat square plate and aligned with the dust collecting circular holes.

[0016] Furthermore, the anti-blocking component includes a side connecting plate, one side of which is fixedly connected with a thin penetration rod. When the circular sleeve slides, the thin penetration rod that penetrates the circular sleeve always limits its sliding movement to prevent the elastically connected circular sleeve from being offset, misaligned and stuck when it slides unevenly due to centrifugal force. A circular sleeve block is sleeved on the outer side of the thin penetration rod and slidably connected. A retraction spring is fixedly connected to the side of the circular sleeve block close to the side connecting plate. The retraction spring pulls the circular sleeve block back and forth in the direction of the linkage rod through the retraction force to prevent the retraction spring from being always in a stretched state and dust is distributed on the inner side of the retraction spring, affecting the spring contraction limit. The outer surface of the circular sleeve block is fixedly connected with a bottom scraper. When the bottom scraper moves, it scrapes the accumulated dust on the surface of the flat square plate. Scrape and clean to prevent dust from accumulating for a long time between the V-shaped baffles and causing blockage, making it difficult to capture and collect the dust. Both sides of the bottom scraper are fixedly connected with forked brushes, and the hard forked brushes are moved to clean between the multiple V-shaped baffles and in the dust-catching circular holes, preventing the multiple V-shaped baffles and the dust-catching circular holes from being blocked with pieces of dust, making it difficult to discharge the cleaned dust efficiently. One side of the side connecting plate is fixedly connected to one side of the flat square plate, and the side of the bottom scraper away from the circular sleeve block is slidably connected to one side of the flat scraper. The end of the retraction spring away from the circular sleeve block is fixedly connected to the side of the side connecting plate close to the thin through rod. A plurality of forked brushes are provided, and the plurality of forked brushes are evenly distributed on both sides of the bottom scraper.

[0017] Furthermore, the cleaning component includes a fixed penetration rod, which rotates with the corrugated scraper to stabilize the horizontal shape of the corrugated scraper to prevent the corrugated scraper from being deformed by being pushed and squeezed, and the side close to the cabinet door is also deformed and separated from the contact with the side of the cabinet door. The outer side of the fixed penetration rod is sleeved and fixedly connected with a corrugated scraper, and the dust around the waveform sensor is cleaned by the waveform setting of the corrugated scraper to prevent the dust around the ultrasonic sensor from gradually increasing during the discharge and affecting the detection effect. The outer surface of the corrugated scraper is fixedly connected with a curved brush, and the dense curved brush The receiving surface of the waveform sensor facing the electrical component is frictionally cleaned to prevent excessive dust from gradually adhering to the receiving surface of the ultrasonic sensor facing the electrical component, which directly affects the ultrasonic reception effect. The outer surface of the waveform scraper is provided with a waveform through hole, and the waveform scraper is provided with a large waveform through hole near both sides to facilitate the passage of ultrasonic waves, so as to prevent the four waveform scrapers from being arranged between the four ultrasonic sensors to block the ultrasonic wave and cause incomplete reception of ultrasonic signals near the cabinet door. The end of the fixed through rod away from the arc brush is fixedly connected to the outer side of the linkage rod, and one side of the waveform scraper is fixedly connected to the outer side of the linkage rod.

[0018] The present invention has the beneficial effects:

[0019] 1. The present invention provides a plurality of small dust-collecting circular holes on a rotating flat square plate to facilitate dust accumulation, thereby preventing excessive dust from accumulating inside the power switch cabinet after long-term use, thereby affecting the transmission and reception of ultrasonic signals and resulting in poor discharge detection effect. The bottom scraper scrapes and cleans the accumulated dust on the surface of the flat square plate when moving, thereby preventing the V-shaped baffles from clogging due to long-term dust accumulation, thereby making it difficult to capture and collect the dust. The dust around the waveform sensor is cleaned by the waveform setting of the waveform scraper, thereby preventing the dust around the ultrasonic sensor from gradually increasing during discharge and affecting the detection effect, thereby preventing the dust inside the power cabinet from being cleaned for a long time.

[0020] 2. The present invention provides a dust collecting mechanism, and provides a flat square plate in a rectangular flat sheet shape and in a direction parallel to the ultrasonic transmission direction, so as to prevent the dust collecting plate between the ultrasonic sensor and the electrical component from blocking the ultrasonic transmission over a large area when not working. A plurality of dust collecting circular holes with smaller apertures are provided on the rotating flat square plate to facilitate dust accumulation, so as to prevent excessive dust from accumulating inside the power switch cabinet after long-term use, thereby affecting the transmission and reception of ultrasonic signals and causing poor discharge detection effect. A plurality of V-shaped baffles are provided on both sides of the flat square plate at positions aligned with the dust collecting circular holes to cover the dust collecting circular holes, so as to prevent the ultrasonic signals passing through the surface of the flat square plate from being absorbed when more and more dust gradually accumulates on the surface of the flat square plate. The V-shaped inclined surface of the V-shaped baffle is provided to facilitate the outflow space to store the accumulated dust, so as to prevent the dust collecting circular holes from being quickly blocked by accumulation during use and making it difficult to collect the surrounding dust by inclusion adsorption.

[0021] 3. The present invention provides an anti-blocking component. When the circular sleeve slides, a thin penetration rod that penetrates the circular sleeve always limits its sliding position, thereby preventing the elastically connected circular sleeve from being offset, misplaced, and stuck when it slides unevenly due to centrifugal force. When the bottom scraper moves, it scrapes and cleans the accumulated dust on the surface of the flat square plate, thereby preventing the V-shaped baffles from accumulating dust for a long time and causing blockage, which makes it difficult to capture and collect the dust. When the hard forked brush moves, it moves and cleans between multiple V-shaped baffles and in the dust-catching circular holes, thereby preventing the multiple V-shaped baffles and in the dust-catching circular holes from being blocked by pieces of dust, which makes it difficult to discharge the cleaned dust efficiently. The retraction spring pulls the circular sleeve back and forth in the direction of the linkage rod through the retraction force, thereby preventing the retraction spring from being always in a stretched state and being mixed with dust and distributed on the inner side of the retraction spring, which affects the contraction limit of the spring.

[0022] 4. The present invention provides a cleaning component to clean the dust around the waveform sensor through the waveform setting of the waveform scraper, so as to prevent the dust inside the power cabinet from being cleaned for a long time. When the dust around the ultrasonic sensor is discharged, it will gradually increase and affect the detection effect. The fixed penetrating rod that rotates together with the waveform scraper stabilizes the horizontal shape of the waveform scraper to prevent the side of the waveform scraper close to the cabinet door from being bent and deformed when the waveform scraper is pushed and deformed, and then loses contact with the side of the cabinet door. The densely packed arc brushes rub and clean the receiving surface of the waveform sensor facing the electrical component to prevent the ultrasonic sensor from gradually being attached with too much dust on the receiving surface facing the electrical component, which directly affects the ultrasonic reception effect. The waveform scraper is provided with large waveform through holes near both sides to facilitate the passage of ultrasonic waves, so as to prevent the four waveform scrapers from being set between the four ultrasonic sensors to block the ultrasonic waves and cause incomplete reception of ultrasonic signals near the cabinet door. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a partial discharge detection device of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the partial discharge detection device of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the dust collecting mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the partial structure of the dust collecting mechanism of the present invention;

[0027] Figure 5 This is a schematic diagram of the anti-blocking component structure of the present invention;

[0028] Figure 6 This is an enlarged structural diagram of the anti-blocking component A of the present invention;

[0029] Figure 7 This is a schematic diagram of the cleaning component structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the local structure of the cleaning component of the present invention;

[0031] In the figure: 1. power cabinet; 2. cabinet door; 3. ultrasonic sensor; 4. dust collection mechanism; 5. motor; 401. flat square plate; 402. dust collection circular hole; 403. linkage rod; 404. anti-blocking component; 405. cleaning component; 406. V-shaped baffle; 4041. side connecting plate; 4042. thin through rod; 4043. round sleeve block; 4044. retraction spring; 4045. bottom scraper; 4046. forked brush; 4051. fixed through rod; 4052. corrugated scraper; 4053. arc brush; 4054. corrugated through hole. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0033] For the first embodiment, please refer to Figure 1-Figure 4 The present invention is a partial discharge detection device for a power switch cabinet, comprising:

[0034] A power cabinet 1, with a cabinet door 2 disposed on one side of the power cabinet 1;

[0035] An ultrasonic sensor 3, which is used to receive ultrasonic signals emitted by electrical components;

[0036] A dust collecting mechanism 4, which is used to capture and collect flying dust in the area between the ultrasonic sensor 3 and the electrical components;

[0037] The side of the power cabinet 1 close to the ultrasonic sensor 3 is rotatably connected to the top of the cabinet door 2 through a rotating bolt, the side of the cabinet door 2 close to the power cabinet 1 is fixedly connected to one side of the ultrasonic sensor 3, and the side of the cabinet door 2 close to the ultrasonic sensor 3 is rotatably connected to one end of the dust collecting mechanism 4 through a rotating bolt;

[0038] Wherein, the dust collecting mechanism 4 comprises:

[0039] A flat square plate 401, the direction of which is arranged parallel to the direction of ultrasonic transmission, and a dust-collecting circular hole 402 is arranged on the outer surface of the flat square plate 401;

[0040] There are multiple dust collecting circular holes 402, and the multiple dust collecting circular holes 402 are evenly distributed on the outer surface of the flat square plate 401;

[0041] A motor 5 is fixedly connected to the side of the cabinet door 2 away from the ultrasonic sensor 3, and a driving shaft of the motor 5 is fixedly connected to an end of the dust collecting mechanism 4 close to the cabinet door 2;

[0042] A linkage rod 403 is fixedly connected to one side of the flat square plate 401, an anti-blocking assembly 404 is fixedly connected to both sides of the flat square plate 401, a cleaning assembly 405 is fixedly connected to the outer side of the linkage rod 403, and a V-shaped baffle 406 is fixedly connected to both sides of the flat square plate 401;

[0043] One end of the linkage rod 403 close to the cabinet door 2 is fixedly connected to the driving shaft of the motor 5, and one end of the linkage rod 403 close to the motor 5 is rotatably connected to one side of the cabinet door 2 through a rotating bolt;

[0044] Four cleaning components 405 are provided, and the four cleaning components 405 are evenly distributed on the outer surface of the linkage rod, V-shaped baffles 406 are provided on both sides of the flat square plate 401 and aligned with the dust collecting circular holes 402. When in use, a plurality of ultrasonic sensors 3 facing the electrical components are provided on the inner side of the cabinet door 2 to receive the ultrasonic signals emitted by the electrical components, and the partial discharge of the electrical components is detected by the ultrasonic signals detected by the ultrasonic sensors 3. At regular intervals, the motor 5 can be started to drive the dust collecting mechanism 4 to rotate to capture and collect the flying dust in the area between the ultrasonic sensor 3 and the electrical components, and the motor 5 is started to drive the linkage rod 403 to rotate. When the linkage rod 403 rotates, it drives the cleaning components 405 and the flat square plate 401 on the outer surface to rotate. When the cleaning components 405 rotate, the outer surface of the ultrasonic sensor 3 and the side receiving the ultrasonic signal are cleaned of dust. By setting the flat square plate 401 into a rectangular flat The flat square plate 401 is in the form of a sheet and its direction is parallel to the direction of ultrasonic transmission. When the flat square plate 401 rotates, the dust-catching circular holes 402 opened on the surface are used to capture and collect the surrounding flying dust. A plurality of dust-catching circular holes 402 with smaller apertures are opened on the rotating flat square plate 401 to facilitate dust accumulation. When the flat square plate 401 rotates, the anti-blocking components 404 and the V-shaped baffles 406 on both sides are driven to rotate together. A plurality of V-shaped baffles 406 are arranged at positions aligned with the dust-catching circular holes 402 on both sides of the flat square plate 401 to cover the dust-catching circular holes 402. The V-shaped inclined surface of the V-shaped baffle 406 is arranged to facilitate the outflow space to store the accumulated dust. When the inner side of the V-shaped baffle 406 is also full of dust, the cabinet door 2 can be opened. At this time, the starting motor 5 drives the flat square plate 401 to rotate at a high speed through the linkage rod 403. When the flat square plate 401 rotates at a high speed, it drives the anti-blocking component 404 to clear the dust from the area between the V-shaped baffles 406.

[0045] For the second embodiment, please refer to Figure 1-Figure 8The present invention provides a partial discharge detection device for a power switch cabinet: an anti-blocking component 404 includes a side connecting plate 4041, a thin penetrating rod 4042 is fixedly connected to one side of the side connecting plate 4041, a circular sleeve block 4043 is sleeved and slidably connected to the outer side of the thin penetrating rod 4042, a retraction spring 4044 is fixedly connected to the side of the circular sleeve block 4043 close to the side connecting plate 4041, a bottom scraper 4045 is fixedly connected to the outer surface of the circular sleeve block 4043, and both sides of the bottom scraper 4045 A forked brush 4046 is fixedly connected to each of the side connecting plates 4041, one side of the side connecting plate 4041 is fixedly connected to one side of the flat square plate 401, a side of the bottom scraper 4045 away from the circular sleeve 4043 is slidably connected to one side of the flat scraper, an end of the retraction spring 4044 away from the circular sleeve 4043 is fixedly connected to a side of the side connecting plate 4041 close to the thin through rod 4042, a plurality of forked brushes 4046 are provided, and the plurality of forked brushes 4046 are evenly distributed on both sides of the bottom scraper 4045;

[0046] The cleaning component 405 includes a fixed penetrating rod 4051, a corrugated scraper 4052 is sleeved and fixedly connected to the outer side of the fixed penetrating rod 4051, a curved brush 4053 is fixedly connected to the outer surface of the corrugated scraper 4052, a corrugated through hole 4054 is provided on the outer surface of the corrugated scraper 4052, one end of the fixed penetrating rod 4051 away from the curved brush 4053 is fixedly connected to the outer side of the linkage rod 403, and one side of the corrugated scraper 4052 is fixedly connected to the outer side of the linkage rod 403. When in use, the flat square plate 401 rotates at high speed, driving the side connecting plates 4041 on both sides to rotate together. When the side connecting plates 4041 rotate, the circular sleeve block 4043 is driven to rotate together through the thin penetrating rod 4042, and the circular sleeve block 4043 rotates together with the side connecting plates 4041 through the thin penetrating rod 4042. When the circular sleeve 4043 elastically connected to the retraction spring 4044 rotates at a high speed, it slides in the direction away from the linkage rod 403 due to the centrifugal force. When the circular sleeve 4043 slides, the thin penetration rod 4042 that penetrates the circular sleeve 4043 always limits its sliding. When the circular sleeve 4043 slides in the direction away from the side connecting plate 4041, it drives the outer bottom scraper 4045 to move together and pulls the retraction spring 4044 to extend. When the bottom scraper 4045 moves, it scrapes and cleans the accumulated dust on the surface of the flat square plate 401. When the bottom scraper 4045 moves, it drives the forked brushes 4046 on both sides to move together. The forked brush 4046 is made of hard material. When the hard forked brush 4046 moves The space between the multiple V-shaped baffles 406 and the dust-catching circular hole 402 are moved for cleaning. After the motor 5 is turned off, the circular sleeve 4043 loses the centrifugal force and stops stretching the retraction spring 4044. The retraction spring 4044 pulls the circular sleeve 4043 back to the direction of the linkage rod 403 through the retraction force. When the linkage rod 403 rotates, it drives the fixed penetration rod 4051 on the outside and the wave-shaped scraper 4052 to rotate together. When the wave-shaped scraper 4052 rotates, it scrapes and cleans the dust on the inner side of the cabinet door 2. At the same time, when the wave-shaped scraper 4052 rotates to contact the ultrasonic sensor 3, it is pushed and bent and deformed. At this time, the wave-shaped scraper 4052 is in friction contact with a large area of ​​the surface of the waveform sensor through the wave surface setting. The waveform setting of 4052 cleans the dust around the waveform sensor, and the fixed penetration rod 4051 that rotates with the waveform scraper 4052 stabilizes the horizontal shape of the waveform scraper 4052. The part of the waveform scraper 4052 that exceeds the fixed penetration rod 4051 contacts the surface of the waveform sensor. At the same time, the arc brush 4053 on the surface of the waveform scraper 4052 is in friction contact with the surface of the waveform sensor and the receiving surface facing the electrical component together with the waveform scraper 4052. The densely packed arc brushes 4053 frictionally clean the receiving surface of the waveform sensor facing the electrical component, and the waveform scraper 4052 is provided with large waveform through holes 4054 near both sides to facilitate the passage of ultrasonic waves.

[0047] When the present invention is in operation, a plurality of ultrasonic sensors 3 facing the electrical components are arranged on the inner side of the cabinet door 2 to receive the ultrasonic signals emitted by the electrical components. The partial discharge of the electrical components is detected by the ultrasonic signals detected by the ultrasonic sensors 3. The motor 5 can be started at regular intervals to drive the dust collecting mechanism 4 to rotate to capture and collect the flying dust in the area between the ultrasonic sensor 3 and the electrical components. The motor 5 is started to drive the linkage rod 403 to rotate. When the linkage rod 403 rotates, the cleaning component 405 and the flat square plate 401 on the outer surface are driven to rotate. When the cleaning component 405 rotates, the dust on the outer surface of the ultrasonic sensor 3 and the side receiving the ultrasonic signal is cleaned. By setting the flat square plate 401 to a rectangular flat sheet and its direction to the same The ultrasonic transmission direction is parallel. When the flat square plate 401 rotates, the dust-catching circular holes 402 opened on the surface are used to capture and collect the flying dust around. By opening a plurality of dust-catching circular holes 402 with smaller apertures on the rotating flat square plate 401, dust accumulation is facilitated. When the flat square plate 401 rotates, the anti-blocking components 404 and the V-shaped baffles 406 on both sides are driven to rotate together. A plurality of V-shaped baffles 406 are arranged on both sides of the flat square plate 401 at positions aligned with the dust-catching circular holes 402 to cover the dust-catching circular holes 402. The V-shaped inclined surface of the V-shaped baffle 406 is arranged to facilitate the outflow space to store the accumulated dust. When the inner side of the V-shaped baffle 406 is also full of dust, the cabinet door 2 can be opened. At this time, the motor 5 is started to drive the flat square plate 401 through the linkage rod 403 401 rotates at high speed, and when the flat square plate 401 rotates at high speed, it drives the anti-blocking component 404 to clear the dust from the area between the V-shaped baffle plates 406, and when the flat square plate 401 rotates at high speed, it drives the side connecting plates 4041 on both sides to rotate together, and when the side connecting plates 4041 rotate, it drives the circular sleeve 4043 to rotate together through the thin penetration rod 4042, and when the circular sleeve 4043 elastically connected to the side connecting plates 4041 through the retraction spring 4044 rotates at high speed, it slides in the direction away from the linkage rod 403 due to the centrifugal force, and when the circular sleeve 4043 slides, the thin penetration rod 4042 that penetrates the circular sleeve 4043 always limits its sliding position, and when the circular sleeve 4043 slides in the direction away from the side connecting plates 4041, it drives the outer bottom scraper 4045 to move together and The retraction spring 4044 is pulled to stretch, and the bottom scraper 4045 moves to scrape and clean the accumulated dust on the surface of the flat square plate 401. When the bottom scraper 4045 moves, it drives the forked brushes 4046 on both sides to move together. The forked brushes 4046 are made of hard material. When the hard forked brushes 4046 move, they move and clean between the multiple V-shaped baffles 406 and the dust-catching circular holes 402. After the motor 5 is turned off, the circular sleeve 4043 loses the centrifugal force and stops stretching the retraction spring 4044. The retraction spring 4044 pulls the circular sleeve 4043 to move back and reset in the direction of the linkage rod 403 through the retraction force. When the linkage rod 403 rotates, it drives the fixed penetration rod 4051 on the outside and the corrugated scraper 4052 to rotate together.When the wave scraper 4052 rotates, it scrapes and cleans the dust on the inner side of the cabinet door 2. At the same time, when the wave scraper 4052 rotates to contact the ultrasonic sensor 3, it is pushed and bent. At this time, the wave scraper 4052 is in friction contact with the surface of the waveform sensor over a large area through the wave surface setting. The dust around the waveform sensor is cleaned through the waveform setting of the wave scraper 4052. The fixed penetrating rod 4051 that rotates with the wave scraper 4052 stabilizes the horizontal shape of the wave scraper 4052. The part of the wave scraper 4052 that exceeds the fixed penetrating rod 4051 contacts the surface of the wave sensor. At the same time, the arc brush 4053 on the surface of the wave scraper 4052 is in friction contact with the surface of the wave sensor and the receiving surface facing the electrical component together with the wave scraper 4052. The dense arc brush 4053 frictionally cleans the receiving surface of the wave sensor facing the electrical component. The wave scraper 4052 is provided with a large-area wave through hole 4054 near both sides to facilitate the passage of ultrasonic waves.

[0048] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A partial discharge detection device for a power switch cabinet, characterized in that: include: A power cabinet (1), wherein a cabinet door (2) is provided on one side of the power cabinet (1); An ultrasonic sensor (3), the ultrasonic sensor (3) being used to receive an ultrasonic signal emitted by an electrical component; A dust collecting mechanism (4), the dust collecting mechanism (4) being used to capture and collect flying dust in the area between the ultrasonic sensor (3) and the electrical component; The side of the power cabinet (1) close to the ultrasonic sensor (3) is rotatably connected to the top of the cabinet door (2) via a rotating bolt, the side of the cabinet door (2) close to the power cabinet (1) is fixedly connected to one side of the ultrasonic sensor (3), and the side of the cabinet door (2) close to the ultrasonic sensor (3) is rotatably connected to one end of the dust collecting mechanism (4) via a rotating bolt; Wherein, the dust collecting mechanism (4) comprises: A flat square plate (401), the direction of the flat square plate (401) being arranged parallel to the direction of ultrasonic wave transmission, and a dust-catching circular hole (402) being arranged on the outer surface of the flat square plate (401); A plurality of the dust-collecting circular holes (402) are provided, and the plurality of the dust-collecting circular holes (402) are evenly distributed on the outer surface of the flat square plate (401); A linkage rod (403) is fixedly connected to one side of the flat square plate (401), an anti-blocking assembly (404) is fixedly connected to both sides of the flat square plate (401), a cleaning assembly (405) is fixedly connected to the outer side of the linkage rod (403), and a V-shaped baffle (406) is fixedly connected to both sides of the flat square plate (401); The cleaning assembly (405) comprises a fixed penetration rod (4051), a corrugated scraper (4052) is sleeved on the outer side of the fixed penetration rod (4051) and fixedly connected thereto, a curved brush (4053) is fixedly connected to the outer surface of the corrugated scraper (4052), and a corrugated through hole (4054) is provided on the outer surface of the corrugated scraper (4052).

2. The partial discharge detection device for a power switch cabinet according to claim 1, characterized in that: A motor (5) is fixedly connected to a side of the cabinet door (2) away from the ultrasonic sensor (3), and a drive shaft of the motor (5) is fixedly connected to an end of the dust collecting mechanism (4) close to the cabinet door (2).

3. The partial discharge detection device for a power switch cabinet according to claim 1, characterized in that: One end of the linkage rod (403) close to the cabinet door (2) is fixedly connected to the drive shaft of the motor (5), and one end of the linkage rod (403) close to the motor (5) is rotatably connected to one side of the cabinet door (2) via a rotating bolt.

4. The partial discharge detection device for a power switch cabinet according to claim 1, characterized in that: Four cleaning assemblies (405) are provided, and the four cleaning assemblies (405) are evenly distributed on the outer surface of the linkage rod. The V-shaped baffles (406) are provided on both sides of the flat square plate (401) and are aligned with the dust collecting circular holes (402).

5. The partial discharge detection device for a power switch cabinet according to claim 1, characterized in that: The anti-blocking component (404) comprises a side connecting plate (4041), one side of the side connecting plate (4041) is fixedly connected to a thin penetration rod (4042), the outer side of the thin penetration rod (4042) is sleeved and slidably connected to a circular sleeve block (4043), a side of the circular sleeve block (4043) close to the side connecting plate (4041) is fixedly connected to a retraction spring (4044), the outer surface of the circular sleeve block (4043) is fixedly connected to a bottom scraper (4045), and both sides of the bottom scraper (4045) are fixedly connected to forked brushes (4046).

6. A partial discharge detection device for a power switch cabinet according to claim 5, characterized in that: One side of the side connecting plate (4041) is fixedly connected to one side of the flat square plate (401), and one side of the bottom scraper (4045) away from the circular sleeve block (4043) is slidably connected to one side of the flat scraper.

7. The partial discharge detection device for a power switch cabinet according to claim 5, characterized in that: One end of the retraction spring (4044) away from the circular sleeve block (4043) is fixedly connected to a side of the side connecting plate (4041) close to the thin through rod (4042), and a plurality of forked brushes (4046) are provided, and the plurality of forked brushes (4046) are evenly distributed on both sides of the bottom scraper (4045).

8. The partial discharge detection device for a power switch cabinet according to claim 1, characterized in that: One end of the fixed penetrating rod (4051) away from the curved brush (4053) is fixedly connected to the outer side of the linkage rod (403), and one side of the corrugated scraper (4052) is fixedly connected to the outer side of the linkage rod (403).

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