A monitoring device for high-voltage power distribution cabinet

Abstract

The application discloses a kind of monitoring devices for high-voltage power distribution cabinet, rotatingly installed with rotary disc between the front side ring and the rear side ring, the rotary disc is provided with two upper and lower symmetrical installation ports, separation net is fixed in installation port, rotary member is fixed in the center of rotary disc, exhaust pipe is fixed on the circular hole below the rear side ring, cleaning structure is movably installed in the exhaust pipe, the cleaning structure is connected with rotary member, electric push rod is fixed on the rear side of mounting box, the push rod of electric push rod is connected with rotary member, rotary disc is rotatably arranged in mounting box, two separation nets are arranged on rotary disc for blocking incoming and outgoing air flow, and the position of two separation nets is functionally exchanged, the separation net originally cleaned below is used for air inlet, and the separation net with impurities originally above is below for air exhaust, which can quickly remove and discharge impurities on the separation net, to avoid remaining in the mounting box.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switchgear monitoring technology, and in particular to a monitoring device for high-voltage switchgear. Background Technology

[0002] High-voltage switchgear, also known as high-voltage switch cabinet, is suitable for substations, power plants, industrial and mining enterprises, etc. It is used for power conversion and control in lighting and power distribution. Existing switchgear typically includes an online power monitoring instrument to monitor the current and voltage status inside the switchgear, and a gas detector to analyze the particle composition of the gas to monitor for aging of the circuits and potential fire hazards. The gas inside the high-voltage switchgear is drawn into the gas detector by a gas pump for analysis. Since the gas inside the high-voltage switchgear may contain particulate matter, this particulate matter can enter the gas detector with the airflow, causing blockages and affecting detection. A fault monitoring device and method for high-voltage switchgear, with announcement number CN115199947B, uses a filter to filter the airflow entering the gas detector and a scraping mechanism to scrape one side of the filter surface back and forth, thereby cleaning impurities adhering to the filter surface. When filters adsorb and filter impurities, some fine impurities often adhere to the internal mesh, and these impurities are usually only attached to one side. Therefore, scraping with a scraper is insufficient to remove all impurities, and the scraped-off impurities are not effectively collected, allowing them to disperse with the airflow and potentially cause re-clogging. To address this, a monitoring device for high-voltage distribution cabinets was designed. Summary of the Invention

[0003] The present invention provides a monitoring device for high-voltage distribution cabinets, which solves the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A monitoring device for a high-voltage distribution cabinet includes a distribution cabinet with an installation box mounted on it. The installation box has an internal cavity forming an installation chamber. A fixing ring is fixed to the installation chamber by screws. A front ring and a rear ring are sequentially fixed to the inner ring of the fixing ring from front to back. Both the front and rear rings have two symmetrically arranged circular holes. A rotating disk is rotatably mounted between the front and rear rings. The rotating disk's front and rear sides are sealed and slidably contact the surfaces of the front and rear rings, respectively. The rotating disk has two symmetrically arranged installation openings, each containing a separation mesh. A rotating component is fixed at the center of the rotating disk. An exhaust pipe is fixed to the circular hole below the rear ring. A cleaning structure is movably mounted inside the exhaust pipe and connected to the rotating component. An electric push rod is fixed to the rear side of the installation box, and the push rod of the electric push rod is connected to the rotating component. A connecting pipe is installed between the two round holes on the front ring. A front cover plate is fixed to the front of the mounting box. An online power consumption monitor and a pyrolysis particle monitor are embedded in the front cover plate. The online power consumption monitor is connected to the internal circuit of the distribution cabinet. The detection port of the pyrolysis particle monitor extends into the connecting pipe. The online power consumption monitor is an ARCM00T monitor. The wiring method between the monitor and the distribution cabinet refers to the wiring diagram in the instruction manual of the online power consumption monitor. This type of online power consumption monitor can integrate real-time monitoring, alarm push, circuit protection, timed switching, and remote control to achieve reliable and safe power use. The pyrolysis particle monitor is a pyrolysis particle type electrical monitoring detector that can detect potential fire hazards at an early stage.

[0005] Preferably, an air inlet pipe is welded onto the circular hole above the rear ring. Both the air inlet pipe and the exhaust pipe pass through the mounting box and are located at the rear of the mounting box. The tail end of the exhaust pipe is connected to the air intake port of the air pump through a pipe, and the exhaust port of the air pump is located outside the distribution cabinet. The air pump can draw in the gas inside the distribution cabinet through the air inlet pipe. The gas drawn in passes through the separation net and the circular hole on the front ring and enters the connecting pipe. The gas entering the connecting pipe can be detected by the pyrolysis particle monitor. Then, the gas passes through the circular hole below the front ring, passes through the separation net below, and enters the exhaust pipe, and is finally discharged.

[0006] Preferably, the rotating component includes a rotating sleeve fixed at the center of the rotating disk. The front and rear ends of the rotating sleeve are rotatably connected to the front ring and the rear ring respectively through bearings. The inner ring of the rotating sleeve is provided with a rotating screw groove. A drive shaft is slidably inserted into the rotating sleeve. A drive component is telescopically provided on the drive shaft. The drive component slides into the rotating screw groove.

[0007] Preferably, the rotating spiral groove includes two spiral grooves arranged in a ring array and two reset grooves. The front and rear ends of each spiral groove are connected to the front and rear ends of the two reset grooves in sequence, and the front end of each reset groove extends forward to form an extension groove. The depth of the reset groove at the end away from the extension groove is greater than the depth of the spiral groove at the end away from the extension groove, and the depth of the reset groove at the end near the extension groove is lower than the depth of the spiral groove at the end near the extension groove. The depth of the reset groove gradually decreases from back to front, and the depth of the extension groove is the same as the depth of the spiral groove. The front end of the reset groove is designed with a spiral surface, the shape of which is the same as that of the spiral groove. The spiral groove has 0.5 spiral turns. When the drive component moves from the front end of the spiral groove to the rear end, the entire rotating sleeve rotates 180 degrees, and the positions of the upper and lower separation nets are swapped once.

[0008] Preferably, the drive shaft has two telescopic grooves with a convex cross-section. The drive component includes two drive pins with a convex cross-section. The two drive pins are slidably inserted into the two telescopic grooves. A lifting spring is placed in the telescopic groove. The two ends of the lifting spring abut against the drive pin and the bottom of the telescopic groove, respectively. The lifting spring ensures that the drive pin is always in contact with the inner wall of the rotating screw groove.

[0009] Preferably, the cleaning structure includes a bushing frame and a fixing frame fixed in the exhaust pipe from front to back. A cleaning component is movably installed on the bushing frame. A pull shaft is slidably inserted into the cleaning component. The pull shaft is slidably inserted into the fixing frame. A return spring is sleeved on the pull shaft. The two ends of the return spring abut against the fixing frame and the cleaning component, respectively. A strip-shaped opening is provided above the exhaust pipe, and a connecting bracket is slidably inserted into the strip-shaped opening. The drive shaft is connected to the pull shaft through the connecting bracket.

[0010] Preferably, the front side of the cleaning component is provided with a brush, and the front end of the cleaning component extends into the mounting port below the rotating disk and contacts the separation net below. The rear end of the cleaning component is welded with a fixing sleeve, and the fixing sleeve and the bushing frame are slidably inserted into each other and rotated between them.

[0011] Preferably, the inner ring of the fixing sleeve is provided with a plurality of rotating grooves arranged in an annular array, the tail end of the rotating grooves extends backward to form a pulling groove, the pulling groove is a straight groove, and a plurality of pull pins arranged in an annular array are provided on the pull shaft. The pull pins slide into the rotating grooves. When the pull shaft drives the pull pins to move backward, the pull pins will move backward along the rotating grooves, thereby causing the fixing sleeve and the cleaning component to rotate circumferentially. When the pull pin is in the pull groove, the drive pin on the drive shaft is in the extension groove, and there is a certain distance between the drive pin and the intersection of the extension groove and the spiral groove.

[0012] The beneficial effects of this invention are: 1. By rotating a disc inside the installation box, two separation screens are installed on the disc to block the incoming and outgoing airflow. The positions of the two separation screens are switched periodically. The lower separation screen, which was originally clean, is used for air intake, while the upper separation screen, which was originally contaminated with impurities, is used for air exhaust. This can quickly remove and discharge impurities from the separation screens, preventing them from remaining in the installation box. 2. By installing a cleaning component that moves back and forth and rotates in the air outlet below the rotary disc, the cleaning component can clean the surface of the separation screen below. The impurities and dust that are cleaned off will be directly discharged, thereby ensuring that both the upper and lower separation screen surfaces are clean and free of impurities, improving ventilation and thus improving detection accuracy. 3. By linking the cleaning component with the rotation of the rotating disk, the rotating disk can only rotate after the cleaning component has cleaned the lower separation net and moved away from it, thus avoiding interference from the rotation of the rotating disk. After the rotating disk rotates, the cleaning component can clean another separation net, improving the cleaning effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation of a monitoring device for a high-voltage distribution cabinet proposed in this invention; Figure 2 This is a front view of a monitoring device for a high-voltage distribution cabinet proposed in this invention; Figure 3 for Figure 2 Axonometric projections of the front and rear angles; Figure 4 for Figure 2 Exploded view of the internal components of the mounting box; Figure 5 for Figure 4 Axonometric projections of the front and rear angles; Figure 6 for Figure 5 Exploded view of the rotating disk and cleaning components; Figure 7 for Figure 6 Cross-sectional view of the cleaning component and the rotating sleeve; Figure 8 for Figure 7 Enlarged view of the rotating sleeve; Figure 9 for Figure 7 A magnified view of a portion of the drive shaft; Figure 10 This is a schematic diagram showing the internal unfolding of the rotating sleeve.

[0014] The diagram is labeled as follows: 1. Distribution cabinet; 2. Mounting box; 21. Front cover plate; 22. Fixing ring; 23. Rear side ring; 231. Air inlet pipe; 232. Exhaust pipe; 24. Front side ring; 3. Online power consumption monitor; 4. Pyrolysis particle monitor; 5. Connecting pipe; 6. Rotary disc; 61. Mounting port; 62. Separation net; 63. Rotating sleeve; 64. Rotating screw groove; 641. Spiral groove; 642. Extension groove; 643. Reset groove; 65. Drive shaft; 651. Drive pin; 652. Lifting spring; 7. Cleaning structure; 71. Cleaning component; 711. Fixing sleeve; 712. Rotating groove; 72. Shaft sleeve bracket; 73. Pull shaft; 731. Pull pin; 74. Fixing bracket; 75. Reset spring; 76. Connecting bracket; 8. Electric push rod. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0016] Reference Figure 1 - Figure 10 A monitoring device for a high-voltage distribution cabinet includes a distribution cabinet 1, an installation box 2 installed on the distribution cabinet 1, an installation cavity formed inside the installation box 2, a fixing ring 22 fixed with screws inside the installation cavity, a front ring 24 and a rear ring 23 fixed in sequence from front to back on the inner ring of the fixing ring 22, the front ring 24 and the rear ring 23 each have two circular holes symmetrically arranged vertically, a rotating disk 6 is rotatably installed between the front ring 24 and the rear ring 23, the front and rear sides of the rotating disk 6 are sealed and slidingly contacted with the surfaces of the front ring 24 and the rear ring 23 respectively, the rotating disk 6 has two vertically symmetrical installation openings 61, a separation net 62 is fixed inside the installation openings 61, a rotating component is fixed at the center of the rotating disk 6, an exhaust pipe 232 is fixed on the circular hole below the rear ring 23, a cleaning structure 7 is movably installed inside the exhaust pipe 232, the cleaning structure 7 is connected to the rotating component, an electric push rod 8 is fixed on the rear side of the installation box 2, the push rod of the electric push rod 8 is connected to the rotating component; A connecting pipe 5 is installed between the two round holes on the front ring 24. A front cover plate 21 is fixed to the front of the mounting box 2. An online power monitoring instrument 3 and a pyrolysis particle monitoring instrument 4 are embedded in the front cover plate 21. The online power monitoring instrument 3 is connected to the internal circuit of the distribution cabinet 1. The detection port of the pyrolysis particle monitoring instrument 4 extends into the connecting pipe 5. The online power monitoring instrument 3 is an ARCM300T monitoring instrument. The wiring method between it and the distribution cabinet 1 refers to the wiring diagram in the instruction manual of the online power monitoring instrument 3. This online power monitoring instrument 3 can integrate real-time monitoring, alarm push, circuit protection, timer switch, and remote control to achieve reliable and safe power use. The pyrolysis particle monitoring instrument 4 is a pyrolysis particle type electrical monitoring detector, which can detect potential fire hazards at an early stage.

[0017] Reference Figure 2 - Figure 5 An air inlet pipe 231 is welded to the round hole above the rear ring 23. Both the air inlet pipe 231 and the exhaust pipe 232 pass through the mounting box 2 and are located at the rear of the mounting box 2. The tail end of the exhaust pipe 232 is connected to the air intake port of the air pump through a pipe, and the exhaust port of the air pump is located outside the distribution cabinet 1. The air pump can draw in the gas inside the distribution cabinet 1 through the air inlet pipe 231. The gas drawn in passes through the separation net 62 and the round hole on the front ring 24 and enters the connecting pipe 5. The gas entering the connecting pipe 5 can be detected by the pyrolysis particle monitor 4. Then the gas passes through the round hole below the front ring 24 and the separation net 62 below and enters the exhaust pipe 232, and is finally discharged.

[0018] Reference Figure 4 - Figure 10 The rotating component includes a rotating sleeve 63 fixed at the center of the rotating disk 6. The front and rear ends of the rotating sleeve 63 are rotatably connected to the front ring 24 and the rear ring 23 respectively through bearings. The inner ring of the rotating sleeve 63 is provided with a rotating screw groove 64. A drive shaft 65 is slidably inserted into the rotating sleeve 63. A drive component is telescopically provided on the drive shaft 65. The drive component slides into the rotating screw groove 64.

[0019] The rotating spiral groove 64 includes two spiral grooves 641 distributed in a ring array and two reset grooves 643. The front and rear ends of each spiral groove 641 are connected to the front and rear ends of the two reset grooves 643 in sequence. The front end of each reset groove 643 extends forward to form an extension groove 642. The depth of the end of the reset groove 643 away from the extension groove 642 is greater than the depth of the end of the spiral groove 641 away from the extension groove 642, and the depth of the end of the reset groove 643 near the extension groove 642 is lower than the depth of the end of the spiral groove 641 near the extension groove 642. The depth of the reset groove 643 gradually decreases from back to front, and the depth of the extension groove 642 is the same as the depth of the spiral groove 641. The front end of the reset groove 643 is designed with a spiral surface. The shape of the spiral surface is the same as that of the spiral groove 641. The spiral groove 641 has 0.5 spiral turns. When the driving component moves from the front end of the spiral groove 641 to the rear end, the entire rotating sleeve 63 rotates 180 degrees, and the positions of the upper and lower separation nets 62 are swapped once.

[0020] Two telescopic grooves are provided on the drive shaft 65. The cross-section of the telescopic groove is convex. The drive component includes two drive pins 651. The cross-section of the drive pins 651 is convex. The two drive pins 651 are slidably inserted into the two telescopic grooves respectively. A lifting spring 652 is placed in the telescopic groove. The two ends of the lifting spring 652 abut against the drive pins 651 and the bottom of the telescopic groove respectively. The lifting spring 652 makes the drive pins 651 always abut against the inner wall of the rotating screw groove 64. In the initial state, that is, when the push rod of the electric actuator 8 is in the extended state, the drive pin 651 is placed at the foremost side inside the extension groove 642, and the drive shaft 65 is at the foremost side. Then, the drive shaft 65 moves backward under the action of the electric actuator 8, and the drive pin 651 on the drive shaft 65 will also move backward along the rotating screw groove 64. When the drive pin 651 moves to the intersection of the extension groove 642 and the screw groove 641, due to the design of the front helical surface of the reset groove 643, the shape of the helical surface is consistent with the helical groove 641. 41 have the same shape. As the drive pin 651 continues to move backward with the drive shaft 65, the drive pin 651 will move along the spiral groove 641. During the backward movement along the spiral groove 641, since the drive shaft 65 and the drive pin 651 cannot deflect, the drive pin 651 will push the rotating sleeve 63 to rotate. When the drive shaft 65 moves to the last end, the drive pin 651 moves to the last end of the reset groove 643. At this time, the rotating sleeve 63 deflects 180 degrees, and the rotating disk 6 rotates 180 degrees. Then, the drive shaft 65 moves forward under the action of the electric push rod 8. Since the depth of the end of the reset groove 643 near the extension groove 642 is lower than the depth of the end of the spiral groove 641 near the extension groove 642, the drive pin 651 abuts against the inner wall of the reset groove 643 under the action of the lifting spring 652. Then, when the drive pin 651 moves forward under the action of the drive shaft 65, the drive pin 651 will move along the reset groove 643 and will not enter the rear end of the spiral groove 641. Since the reset groove 643 is a straight groove, the rotating sleeve 63 will not deflect during the process of the drive pin 651 moving forward along the reset groove 643. When the drive pin 651 moves to the foremost position under the action of the drive shaft 65, since the depth of the front end of the reset groove 643 is lower than the depth of the rear end of the reset groove 643, the drive pin 651 will gradually extend and retract into the extension groove during the forward movement. When the drive pin 651 moves into the extension groove 642, the drive pin 651 will extend and retract into the extension groove 642 under the action of the lifting spring 652. Then the drive pin 651 continues to move forward until it reaches the initial position, completing one rotation of the rotating disk 6.

[0021] Reference Figure 4 - Figure 7 The cleaning structure 7 includes a bushing frame 72 and a fixing frame 74 fixed in the exhaust pipe 232 from front to back. A cleaning component 71 is movably installed on the bushing frame 72. A pull shaft 73 is slidably inserted into the cleaning component 71. The pull shaft 73 is slidably inserted into the fixing frame 74. A return spring 75 is sleeved on the pull shaft 73. The two ends of the return spring 75 abut against the fixing frame 74 and the cleaning component 71, respectively. A strip-shaped opening is provided above the exhaust pipe 232, and a connecting bracket 76 is slidably inserted into the strip-shaped opening. The drive shaft 65 is connected to the pull shaft 73 through the connecting bracket 76.

[0022] A brush is provided on the front side of the cleaning component 71, and the front end of the cleaning component 71 extends into the mounting port 61 below the rotating disk 6 and contacts the separation net 62 below. A fixing sleeve 711 is welded to the rear end of the cleaning component 71. The fixing sleeve 711 and the bushing frame 72 slide and insert into each other, and the two are rotatably connected.

[0023] The inner ring of the fixed sleeve 711 has multiple rotating grooves 712 arranged in a ring array. The tail end of the rotating groove 712 extends backward to form a pull groove. The pull groove is a straight groove. The pull shaft 73 is provided with multiple pull pins 731 arranged in a ring array. The pull pins 731 slide into the rotating groove 712. When the pull shaft 73 drives the pull pins 731 to move backward, the pull pins 731 will move backward along the rotating groove 712, thereby causing the fixed sleeve 711 and the cleaning component 71 to rotate circumferentially. When the pull pin 731 is in the pull groove, the drive pin 651 on the drive shaft 65 is in the extension groove 642, and there is a certain distance between the drive pin 651 and the intersection of the extension groove 642 and the spiral groove 641. When the pull pin 731 continues to move backward, the pull pin 731 will contact the inner wall of the pull groove and pull the cleaning part 71 to move backward together. When the cleaning part 71 is removed from the installation port 61, the drive pin 651 is at the intersection of the extension groove 642 and the spiral groove 641. When the drive pin 651 continues to move backward along the spiral groove 641, the rotating sleeve 63 will rotate under the action of the drive pin 651, and the cleaning part 71 will move backward in a straight line under the action of the pull pin 731. At this time, the return spring 75 is always in a compressed state. When the drive pin 651 moves forward along the reset groove 643, the cleaning component 71, pull shaft 73, and pull pin 731 will move forward in a straight line under the action of the reset spring 75. When the cleaning component 71 moves to the initial position, the brush on the cleaning component 71 will contact the lower separation net 62 again. Then, the pull pin 731 will continue to move forward with the pull shaft 73. The pull pin 731 will move along the spiral groove 641 and make the cleaning component 71 rotate. The brush can rotate on the surface of the lower separation net 62, thereby cleaning the surface of the lower separation net 62.

[0024] Working principle: The online power monitoring instrument 3 is connected to the internal circuit of the distribution cabinet 1. It can detect the current, voltage, and internal temperature of the distribution cabinet 1 in real time and upload the detected data to the terminal for staff to read. The air pump can draw in the gas inside the distribution cabinet 1 through the air inlet pipe. After the gas is separated by the separation screen 62 above the rotating disk 6, the gas enters the connecting pipe 5 through the round hole on the front ring 24. The gas entering the connecting pipe 5 can be detected by the pyrolysis particle monitor 4. The component analyzer built into the detector at the detection port analyzes the composition of the pyrolysis gas. The gas is analyzed by means of techniques such as spectral analysis, chromatographic analysis or mass spectrometry to determine whether there are flammable or toxic gases in the gas and their concentration. Based on the results of the component analysis, the detector judges whether the preset warning or alarm conditions are met. If the warning conditions are met, the pyrolysis particle monitor 4 will issue an audible and visual warning signal to indicate that there may be a fire hazard. After that, the gas passes through the round hole below the front ring 24 and enters the exhaust pipe 232 through the lower separation net 62. When passing through the lower separation net 62, the reverse airflow can blow away the impurities and dust attached to the rear surface of the separation net 62 and finally discharge it into the power distribution cabinet 1.

[0025] In actual use, the electric actuator 8 uses a PLC, timer relay or microcontroller to preset the action time and duration. After the set time is reached, it automatically outputs an electrical signal, and the actuator of the electric actuator 8 extends or retracts. In the initial state, that is, when the push rod of the electric actuator 8 is in the extended state, the drive pin 651 is placed at the foremost side inside the extension groove 642. At this time, the drive shaft 65 is at the foremost side. After the electric actuator 8 reaches the set time, the push rod of the electric actuator 8 will retract, and the drive shaft 65 connected to the push rod of the electric actuator 8 will move backward under the action of the electric actuator 8. The drive pin 651 located on the drive shaft 65 will also move backward along the extension groove 642. Since the extension groove 642 is a straight groove, the rotating sleeve 63 will not deflect in position during the process of the drive pin 651 moving backward along the extension groove 642. As the drive pin 651 moves backward along the extension groove 642, the pull shaft 73 will move backward along with the drive shaft 65 and drive the pull pin 731 backward. The pull pin 731 will move along the rotation groove 712 toward the pull groove side. When the pull pin 731 moves in the rotation groove 712, the fixing sleeve 711 and the cleaning component 71 rotate circumferentially. The rotating brush on the cleaning component 71 will rotate and clean the surface of the separation net 62 below. The impurities and dust brushed off will be directly discharged with the airflow. Then the pull pin 731 continues to move backward along with the pull shaft 73. The pull pin 731 will contact the inner wall of the pull groove and pull the cleaning component 71 to move backward together, so that the cleaning component 71 is disengaged from the mounting port 61 below.

[0026] After the cleaning component 71 is disengaged from the mounting port 61, the drive pin 651 on the drive shaft 65 moves to the intersection of the extension groove 642 and the spiral groove 641. Due to the spiral surface design of the front end of the reset groove 643, the shape of the spiral surface is the same as the shape of the spiral groove 641. As the drive shaft 65 continues to move backward, the drive pin 651 will move along the spiral groove 641. During the backward movement along the spiral groove 641, since the drive shaft 65 and the drive pin 651 cannot deflect, the drive pin 65... 1 will drive the rotating sleeve 63 to rotate. When the drive shaft 65 moves to the last end, the drive pin 651 moves to the last end of the reset groove 643. At this time, the rotating sleeve 63 deflects 180 degrees, and the rotating disk 6 rotates 180 degrees. At this time, the upper separation net 62 will deflect to the lower end, while the original lower separation net 62 will move to the upper end. The positions and uses of the upper and lower separation nets 62 will be reversed. The original lower clean separation net 62 is used for air intake, while the original upper separation net 62 with impurities is located at the lower end for air exhaust.

[0027] Then, the drive shaft 65 moves forward under the action of the electric push rod 8. Since the depth of the end of the reset groove 643 near the extension groove 642 is lower than the depth of the end of the spiral groove 641 near the extension groove 642, the drive pin 651 abuts against the inner wall of the reset groove 643 under the action of the lifting spring 652. Then, when the drive pin 651 moves forward under the action of the drive shaft 65, the drive pin 651 will move along the reset groove 643 and will not enter the rear end of the spiral groove 641. Since the reset groove 643 is a straight groove, the rotating sleeve 63 will not deflect during the process of the drive pin 651 moving forward along the reset groove 643. When the drive pin 651 moves to the foremost position under the action of the drive shaft 65, since the depth of the front end of the reset groove 643 is lower than the depth of the rear end of the reset groove 643, the drive pin 651 will gradually extend and retract into the extension groove during the forward movement. When the drive pin 651 moves into the extension groove 642, the drive pin 651 will extend and retract into the extension groove 642 under the action of the lifting spring 652. Then the drive pin 651 continues to move forward until it reaches the initial position, completing one rotation of the rotating disk 6. When the drive pin 651 moves forward along the reset groove 643, the cleaning component 71, pull shaft 73, and pull pin 731 will move forward in a straight line under the action of the reset spring 75. When the cleaning component 71 moves to the initial position, the brush on the cleaning component 71 will contact the lower separation net 62 again. Then, the pull pin 731 will continue to move forward with the pull shaft 73. The pull pin 731 will move along the spiral groove 641 and make the cleaning component 71 rotate. The brush can rotate on the surface of the lower separation net 62, thereby cleaning the surface of the lower separation net 62 that was originally located above. The cleaned impurities and dust will be directly discharged, thereby ensuring that the surfaces of both the upper and lower separation nets 62 are clean and free of impurities, improving the ventilation effect and thus improving the detection accuracy.

[0028] By rotating a rotating disk 6 inside the installation box 2, two separation nets 62 are set on the rotating disk 6 to block the incoming and outgoing airflow respectively. The positions of the two separation nets 62 are switched at regular intervals. The separation net 62 that was originally clean at the bottom is used for air intake, while the separation net 62 that was originally impurities at the top is placed at the bottom for air exhaust. This can quickly remove and discharge the impurities on the separation nets 62, preventing them from remaining in the installation box 2. By installing a cleaning component 71 that moves back and forth and rotates in the air outlet 61 below the rotating disk 6, the cleaning component 71 can clean the surface of the separation net 62 below. The impurities and dust that are cleaned off will be directly discharged, thereby ensuring that the surfaces of both the upper and lower separation nets 62 are clean and free of impurities, improving the ventilation effect and thus improving the detection accuracy. By linking the cleaning component 71 with the rotation of the rotating disk 6, the rotating disk 6 can only rotate after the cleaning component 71 has cleaned the lower separation net 62 and moved away from it, thus avoiding interference from the rotation of the rotating disk 6. After the rotating disk 6 rotates, the cleaning component 71 can clean the other separation net 62 again, improving the cleaning effect.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A monitoring device for a high-voltage switchgear, characterized in that, A monitoring device for a high-voltage distribution cabinet includes a distribution cabinet (1), on which a mounting box (2) is installed. The mounting box (2) has an internal cavity forming a mounting chamber. A fixing ring (22) is fixed in the mounting chamber by screws. A front ring (24) and a rear ring (23) are fixed in sequence from front to back on the inner ring of the fixing ring (22). The front ring (24) and the rear ring (23) each have two circular holes arranged symmetrically on the top and bottom. A rotating disk is rotatably installed between the front ring (24) and the rear ring (23). (6) The rotating disk (6) has two symmetrical mounting ports (61) and a separation net (62) is fixed inside the mounting port (61). A rotating component is fixed at the center of the rotating disk (6). An exhaust pipe (232) is fixed on the round hole below the rear ring (23). A cleaning structure (7) is movably installed inside the exhaust pipe (232). The cleaning structure (7) is connected to the rotating component. An electric push rod (8) is fixed on the rear side of the mounting box (2). The push rod of the electric push rod (8) is connected to the rotating component. The rotating component includes a rotating sleeve (63) fixed at the center of the rotating disk (6). The front and rear ends of the rotating sleeve (63) are rotatably connected to the front ring (24) and the rear ring (23) respectively through bearings. The inner ring of the rotating sleeve (63) is provided with a rotating screw groove (64). A drive shaft (65) is slidably inserted into the rotating sleeve (63). A drive component is telescopically provided on the drive shaft (65). The drive component slides into the rotating screw groove (64). Two telescopic grooves are opened on the drive shaft (65). The cross-section of the telescopic groove is convex. The drive component includes two drive pins (651). The two drive pins (651) are slidably inserted into the two telescopic grooves respectively. A lifting spring (652) is placed in the telescopic groove. The two ends of the lifting spring (652) abut against the drive pin (651) and the bottom end of the telescopic groove respectively. The rotating spiral groove (64) includes two spiral grooves (641) arranged in a ring array and two reset grooves (643). The front and rear ends of each spiral groove (641) are connected to the front and rear ends of the two reset grooves (643) in sequence. The front end of each reset groove (643) extends forward to form an extension groove (642). The cleaning structure (7) includes a bushing frame (72) and a fixing frame (74) fixed in the exhaust pipe (232) from front to back. A cleaning component (71) is movably installed on the bushing frame (72). A pull shaft (73) is slidably inserted into the cleaning component (71). The pull shaft (73) is slidably inserted into the fixing frame (74). A return spring (75) is sleeved on the pull shaft (73). The two ends of the return spring (75) abut against the fixing frame (74) and the cleaning component (71) respectively. A strip-shaped opening is provided above the exhaust pipe (232). A connecting frame (76) is slidably inserted into the strip-shaped opening. The drive shaft (65) is connected to the pull shaft (73) through the connecting frame (76). A connecting pipe (5) is installed between the two round holes on the front ring (24). A front cover plate (21) is fixed on the front side of the mounting box (2). An online power monitoring instrument (3) and a pyrolysis particle monitoring instrument (4) are embedded in the front cover plate (21). The online power monitoring instrument (3) is connected to the internal circuit of the power distribution cabinet (1). The detection port of the pyrolysis particle monitoring instrument (4) extends into the connecting pipe (5).

2. The monitoring device for a high-voltage distribution cabinet according to claim 1, characterized in that, An air inlet pipe (231) is welded to the round hole above the rear ring (23). The air inlet pipe (231) and the exhaust pipe (232) both pass through the mounting box (2) and are placed on the rear side of the mounting box (2). The tail end of the exhaust pipe (232) is connected to the air intake port of the air pump through a pipe, and the exhaust port of the air pump is placed outside the power distribution cabinet (1).

3. The monitoring device for a high-voltage distribution cabinet according to claim 1, characterized in that, The depth of the end of the reset groove (643) away from the extension groove (642) is greater than the depth of the end of the spiral groove (641) away from the extension groove (642), and the depth of the end of the reset groove (643) near the extension groove (642) is lower than the depth of the end of the spiral groove (641) near the extension groove (642). The depth of the reset groove (643) gradually decreases from back to front, and the depth of the extension groove (642) is the same as the depth of the spiral groove (641).

4. The monitoring device for a high-voltage distribution cabinet according to claim 1, characterized in that, The front side of the cleaning component (71) is provided with a brush, and the front end of the cleaning component (71) extends into the mounting port (61) below the rotating disk (6) and contacts the separation net (62) below. The rear end of the cleaning component (71) is welded with a fixing sleeve (711), and the fixing sleeve (711) and the bushing frame (72) slide and insert back and forth, and the two are rotatably set between them.

5. A monitoring device for a high-voltage distribution cabinet according to claim 4, characterized in that, The inner ring of the fixed sleeve (711) is provided with a plurality of rotating grooves (712) arranged in a ring array. The tail end of the rotating groove (712) extends backward to form a pulling groove. The pulling groove is a straight groove. The pull shaft (73) is provided with a plurality of pull pins (731) arranged in a ring array. The pull pins (731) slide into the rotating groove (712).

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