An emergency treatment device for high-voltage cabinet

Abstract

The application provides an emergency treatment device for a high-voltage cabinet, which comprises a cabinet body, isolation and protection assemblies arranged on both sides of electrical components in the cabinet body, and a protection plate slidingly arranged in the cabinet body, wherein the end of one of the protection plates is provided with a heat dissipation plate, and the end of the other protection plate is provided with a sealing plate, and a through slot with a height matching that of the heat dissipation plate is formed in the sealing plate. The cooperation of the slidingly arranged protection plate and the heat dissipation plate can realize the following functions: when the electrical components in the high-voltage cabinet are normally operated, the heat is efficiently dissipated through the heat dissipation channels formed in the heat dissipation plate; when the temperature of the electrical components exceeds the limit or the electrical components catch fire, the heat dissipation plate is quickly pushed into the through slot, the electrical components are efficiently isolated, the fire is quickly extinguished or the spread of the fire is avoided, and the device is safer and more convenient.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switchgear emergency handling equipment technology, specifically to a high-voltage switchgear emergency handling device. Background Technology

[0002] High-voltage switchgear, as a core power distribution device in the power system, is widely used in power plants, substations, industrial plants, and other scenarios. Its operational stability is directly related to the safe and reliable power supply of the power system. However, during long-term operation, high-voltage switchgear is susceptible to faults such as abnormal temperature rise, short circuit fire, and insulation damage due to factors such as aging of internal electrical components, overload operation, changes in environmental humidity, and external impacts. If effective emergency measures are not taken in time, the fault may escalate, leading to serious consequences such as large-scale power outages, equipment burnout, and even casualties.

[0003] Currently, the emergency response technology of existing high-voltage switchgear has the following problems: the isolation and protection devices are mostly manually operated or have fixed structures, resulting in slow emergency response speed. When a fault occurs, it is impossible to quickly isolate the fault area from the outside, which can lead to the spread of fire or harmful gases, posing a significant safety hazard. Summary of the Invention

[0004] In view of this, the present invention provides an emergency handling device for high-voltage switchgear, which can effectively block high-temperature fires inside the high-voltage switchgear through isolation and protection components, preventing the fire from spreading. This provides higher safety protection efficiency and better results, solving the problems of traditional isolation and protection devices, which are mostly manually operated or have fixed structures, resulting in slow emergency response speeds and the inability to quickly isolate the fault area from the outside when a fault occurs, leading to the spread of fire or harmful gases and posing significant safety hazards.

[0005] To address the aforementioned technical problems, this invention provides an emergency handling device for high-voltage switchgear, comprising a cabinet, with isolation and protection components respectively arranged inside the cabinet on both sides of the electrical components. Each isolation and protection component includes a protective plate slidably disposed inside the cabinet. One protective plate has a heat dissipation plate at one end, and the other protective plate has a sealing plate at one end. The sealing plate has a through groove adapted to the height of the heat dissipation plate. This invention, through the cooperative action of the slidably disposed protective plate and the heat dissipation plate, enables efficient heat dissipation through the heat dissipation channels on the heat dissipation plate when the electrical components inside the high-voltage switchgear are operating normally. When the temperature of the electrical components exceeds the limit or a fire occurs, the heat dissipation plate is quickly pushed into the through groove, efficiently isolating the electrical components, achieving rapid fire extinguishing or preventing fire escape, making it safer and more convenient.

[0006] The protective plate located on the side of the heat sink has an installation groove inside, and a drive component is installed inside the installation groove. A sliding plate is installed at the end of the drive component, and a sealing plate is installed at the end of the sliding plate.

[0007] The drive assembly is a telescopic push rod, and the slide plate is located at the end of the telescopic push rod.

[0008] The telescopic push rod can be an electric push rod or a hydraulic push rod.

[0009] The drive assembly is a linear slide, and the sealing plate is mounted on the slider of the slide.

[0010] The cabinet and the isolation and protection components are both made of composite material panels, including a corrosion-resistant insulation layer, an adhesive layer and a substrate layer connected sequentially from the outside to the inside, wherein the adhesive layer is used to connect the corrosion-resistant insulation layer and the substrate layer.

[0011] The isolation and protection components also include a storage box inside the cabinet located below the upper protective panel, which contains a fire extinguisher, specifically an external dry powder fire extinguisher.

[0012] Sensors, including temperature detectors, are installed inside the cabinet and are located near the busbar connectors and circuit breaker contacts. Omega PT100 platinum resistance temperature detectors are selected.

[0013] The smoke sensor, installed on the inner top surface of cabinet 1, is a Honeywell JTY-GD-2412 photoelectric smoke detector, which can quickly identify smoke particles generated during the smoldering stage.

[0014] The dry powder level detector uses a capacitive level switch, model IFM KI5083, which is installed inside the cabinet. When the dry powder level is lower than the set value, it outputs an alarm signal.

[0015] The alarm is installed outside the cabinet. It is a sound and light alarm, a Schneider XVR series, with a high-decibel buzzer and a red flashing function.

[0016] The cabinet houses a controller electrically connected to the sensors. The controller, housed in a control box on the outer wall of the cabinet, uses a Siemens S7-200 SMART Sr20 PLC as its core processor. This controller offers high stability and strong anti-interference capabilities, making it suitable for high-voltage cabinet environments with strong electromagnetic interference.

[0017] The cabinet is equipped with an inert gas injector, including a high-pressure nitrogen cylinder and a pressure reducing valve. The outlet of the high-pressure nitrogen cylinder is connected to the pressurized inner liner through the pressure reducing valve, ensuring that the dry powder in the storage box is ejected at high speed in the form of a gas-powder mixture.

[0018] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Resolve the inherent contradiction between heat dissipation and isolation, and achieve intelligent switching: During normal operation, the protective plate can be separated, and the heat dissipation plate can efficiently dissipate heat through honeycomb fins to ensure the low-temperature operation of components; in case of failure, the drive component can quickly push the protective plate to close, and the sealing plate and the heat dissipation plate can be precisely connected to form a sealed isolation space to block the spread of fire. The response time is greatly shortened, and the isolation efficiency is greatly improved compared with traditional devices, completely solving the problem of "heat dissipation and isolation cannot be achieved at the same time".

[0019] 2. Combined gas-powder extinguishing + nitrogen to prevent reignition, resulting in thorough extinguishing: This invention uses high-pressure nitrogen to drive dry powder to form a high-speed gas-powder mixture, greatly increasing the spray speed, covering a wider area, and extinguishing the fire faster; at the same time, nitrogen fills the isolation space to reduce the oxygen concentration, inhibiting reignition from the source, greatly improving the success rate of extinguishing the fire. Compared with a single dry powder extinguishing device, the reignition rate is greatly reduced, solving the pain points of traditional fire extinguishing being incomplete and prone to reignition.

[0020] 3. Triple sensor for all-round monitoring to avoid protection failure: This invention uses temperature sensor and smoke sensor to give early warning of faults, and dry powder balance detector to monitor the status of extinguishing medium in real time, forming a dual protection of "fault warning + medium protection"; together with Schneider high-decibel sound and light alarm, it can quickly alert staff in noisy environments, solving the problems of traditional devices such as single monitoring, untimely alarm and lack of medium status monitoring.

[0021] 4. Composite board + anti-interference controller, strong environmental adaptability and long service life: The cabinet and protective components in this invention adopt a composite structure of "modified epoxy resin anti-corrosion insulation layer - epoxy adhesive layer - Q345B substrate layer", which has excellent corrosion resistance, insulation and impact resistance, and is suitable for outdoor, humid and highly corrosive environments; the controller adopts Siemens anti-interference PLC, and with the grounded shielded control box, it can operate stably in strong electromagnetic environment, greatly extending the overall service life of the device.

[0022] 5. Modular design + multiple drive solutions, strong versatility and high commercial value: This invention can provide three options through drive components: electric actuator, hydraulic actuator, and linear slide, adapting to different scenarios such as indoor / outdoor, light / heavy load, and general / precision; each component is modularly assembled, making installation and maintenance convenient, and can be adapted to high-voltage switchgear of different voltage levels and sizes from 10kV to 35kV, reducing customization costs and significantly improving commercial promotion value. Modular design + multiple drive solutions, strong versatility and high commercial value. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the high-voltage switchgear emergency handling device of the present invention; Figure 2 This is a front view of the high-voltage switchgear emergency handling device of the present invention; Figure 3 For the present invention Figure 2 Sectional view at point AA; Figure 4 This is a schematic diagram of the isolation and protection components in the high-voltage switchgear emergency handling device of the present invention; Figure 5 This is a top view of the isolation and protection components in the high-voltage switchgear emergency handling device of the present invention; Figure 6 For the present invention Figure 5 Sectional view at point BB; Figure 7 This is a partial structural diagram of the cabinet, protective plate, sealing plate, and sliding plate in the high-voltage switchgear emergency handling device of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 100, cabinet; 200, isolation and protection assembly; 210, protective plate; 220, heat dissipation plate; 230, sealing plate; 240, drive assembly; 250, sliding plate; 300, anti-corrosion insulation layer; 400, adhesive layer; 500, substrate layer; 600, sensor; 700, controller; 800, inert gas injector. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figure 1-7 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0026] like Figure 1-7As shown: This embodiment provides an emergency handling device for a high-voltage switchgear, including a cabinet 100. Isolation and protection components 200 are respectively installed inside the cabinet 100 on both sides of the electrical components. The core function of the isolation and protection components 200 is to ensure that heat dissipation is not affected during normal operation and to quickly isolate the fault area in case of a fault. The isolation and protection components 200 include a protective plate 210 slidably installed inside the cabinet 100. The protective plate 210 is made of 304 stainless steel, possessing good corrosion resistance and structural strength, and can withstand high-temperature impacts during a fault. Stainless steel slide rails adapted to the protective plate 210 are fixed on both sides inside the cabinet 100. The protective plate 210 is slidably connected to the slide rails via sliders. Molybdenum disulfide grease is applied between the sliders and the slide rails to ensure smooth sliding without jamming. One of the protective plates 210 has a heat sink 220 at one end, and the other protective plate 210 has a sealing plate 230 at one end. The sealing plate 230 has a through groove that matches the height of the heat sink 220. The heat sink 220 is fixed to the end of one of the protective plates 210 by countersunk bolts. The heat sink 220 is made of 6063 aluminum alloy, which has a high thermal conductivity and excellent heat dissipation efficiency. The surface of the heat sink 220 is integrally formed with honeycomb heat dissipation fins with a thickness of 1.2-1.5mm. By increasing the heat dissipation area, the heat conduction effect is further improved, ensuring that the heat of the electrical components is quickly dissipated during normal operation. Another protective plate 210 has a sealing plate 230 at its end. The sealing plate 230 is made of hydrogenated nitrile rubber, which is resistant to high temperatures (-40℃ to 150℃), aging, and has excellent elasticity. It is fixed to the end of the sliding plate 250 through a molding and vulcanization process. The sealing plate 230 has a through groove that matches the height and width of the heat sink 220. A silicone rubber sealing gasket is pasted on the inner wall of the through groove. When the two protective plates 210 slide and close relative to each other, the heat sink 220 is precisely embedded in the through groove. The sealing gasket fits tightly with the heat sink 220 to form a completely sealed isolation space, blocking the spread of fire and harmful gases. A drive assembly 240 is fixed in the mounting slot by bolts. A sliding plate 250 is connected to the end of the drive assembly 240. A sealing plate 230 is fixed to the end of the sliding plate 250. The present invention can achieve efficient heat dissipation through the heat dissipation channel opened on the heat dissipation plate 220 when the electrical components in the high voltage cabinet are operating normally, by the cooperation of the sliding protective plate 210 and the heat dissipation plate 220. When the temperature of the electrical components exceeds the limit or fire occurs, the heat dissipation plate 220 is quickly pushed into the through slot to efficiently isolate the electrical components, thereby achieving rapid fire extinguishing or preventing the fire from spreading, which is safer and more convenient.

[0027] According to one embodiment of the present invention, such as Figure 1-7 As shown, the protective plate 210 located on the side of the heat sink 220 has an installation groove inside, the installation groove is provided with a drive assembly 240, the end of the drive assembly 240 is provided with a slide plate 250, and the sealing plate 230 is provided at the end of the slide plate 250.

[0028] According to another embodiment of the invention, such as Figure 1 and Figure 2 As shown, the drive assembly 240 is a telescopic push rod, and the slide plate 250 is disposed at the end of the telescopic push rod. The telescopic push rod is an electric push rod or a hydraulic push rod, the drive assembly 240 is a linear slide, and the sealing plate 230 is disposed on the slider of the slide plate. The drive assembly 240 is used to drive the slide plate 250 to move the sealing plate 230 linearly, thereby realizing the closing and opening of the protective plate 210.

[0029] Driver component 240 provides two adaptation solutions: Option 1 is a telescopic push rod, with the slide plate 250 fixed to the piston rod end of the telescopic push rod. The electric push rod is selected from the Airtac DT series (thrust 500-1000N, stroke 100-300mm), which is suitable for indoor scenarios without a hydraulic power source and has a fast response speed. The hydraulic push rod is selected from the Zhongmei Hydraulic YT1 series (thrust 1000-2000N, stroke 100-300mm), which is suitable for heavy-duty and outdoor scenarios, with large thrust and stable operation.

[0030] Option 2 is a linear slide table, using the THK K series linear slide table. The slide plate 250 is fixed on the slider of the slide table. It is suitable for precision power distribution scenarios with high requirements for closing accuracy. Users can choose flexibly according to actual needs to improve the versatility of the device.

[0031] According to another embodiment of the invention, such as Figure 1 and Figure 2 As shown, both the cabinet 100 and the isolation and protection component 200 are made of composite material panels, including a corrosion-resistant insulation layer 300, an adhesive layer 400, and a substrate layer 500 connected sequentially from the outside to the inside. The adhesive layer 400 connects the corrosion-resistant insulation layer 300 and the substrate layer 500. The three layers work together to meet the three core requirements of corrosion resistance, insulation, and structural strength. Corrosion-resistant insulation layer 300: A modified epoxy resin coating with added boron nitride powder is used. The boron nitride powder can improve the synergistic performance of thermal conductivity and insulation of the coating. It is attached to the surface of the adhesive layer 400 by electrostatic spraying process. The spraying voltage is 60-80kV and the coating thickness is 0.9-1.3mm. This coating has excellent resistance to atmospheric corrosion, moisture and chemical media erosion. At the same time, the insulation resistance can effectively block the electrical risk of the cabinet 100. Adhesive layer 400: A two-component epoxy adhesive (component A to component B in a mass ratio of 2:1) is applied evenly to the surface of the substrate layer 500 using a scraper application process. After application, the adhesive is cured at 80-100℃ for 2-3 hours. The adhesive has a bonding strength ≥30MPa, which not only ensures a firm connection between the anti-corrosion insulation layer 300 and the substrate layer 500, preventing interlayer peeling, but also buffers external impacts and improves the board's resistance to deformation. Substrate layer 500: Made of Q345B low-alloy high-strength steel plate, this steel has a yield strength ≥345MPa, good toughness and excellent processing performance. It is formed by CNC bending and argon arc welding, with a thickness of 3.5-5.5mm, providing stable structural support for the entire device and ensuring the installation accuracy and operational reliability of each component.

[0032] According to another embodiment of the invention, such as Figure 1 and Figure 2 As shown, the isolation and protection assembly 200 also includes a storage box inside the cabinet 100 located below the upper protective plate 210. The storage box contains a fire extinguisher, specifically an externally mounted dry powder fire extinguisher. The storage box is made of Q235 cold-rolled steel plate, welded together, with an inner wall coated with a polytetrafluoroethylene anti-stick coating to prevent the dry powder from sticking and accumulating. The storage box is equipped with an externally mounted dry powder fire extinguisher (model MFZ / ABC5), using sodium bicarbonate-based composite dry powder, which has a extinguishing efficiency 1.5 times that of ordinary dry powder. A transparent observation window is provided on the outside of the storage box for easy and direct viewing of the fire extinguisher's status. The fire extinguisher is fixed to the storage box by an electromagnetic lock, which is electrically connected to the controller 700 to automatically unlock and spray in case of malfunction.

[0033] According to another embodiment of the invention, such as Figure 1 and Figure 2 As shown, a sensor 600, including a temperature detector, is installed inside the cabinet 100. It is located near the busbar connectors and circuit breaker contacts inside the cabinet. An Omega PT100 platinum resistance thermometer 600 is selected.

[0034] The smoke sensor 600 is installed on the inner top surface of cabinet 1001. It uses Honeywell JTY-GD-2412 photoelectric smoke detector, which can quickly identify smoke particles generated during the smoldering stage.

[0035] The dry powder level detector uses a capacitive level switch, model IFM KI5083, and is installed inside the cabinet 100. When the dry powder level is lower than the set value, it outputs an alarm signal.

[0036] It achieves comprehensive coverage of fault early warning and fire extinguishing medium status monitoring.

[0037] According to another embodiment of the invention, such as Figure 1 and Figure 2As shown, the alarm is installed outside the cabinet. It is a Schneider XVR series audible and visual alarm with a high-decibel buzzer and red flashing function. It can quickly attract the attention of staff in noisy environments and also supports remote alarm signal transmission to achieve remote early warning.

[0038] According to another embodiment of the invention, such as Figure 1 and Figure 2 As shown, a controller 700 electrically connected to the sensor 600 is installed inside the cabinet 100. The controller 700 is installed in a control box on the outer wall of the cabinet 100, and its core processor is a Siemens S7-200 SMART Sr20 PLC. This controller 700 has high stability and strong anti-interference capabilities, making it suitable for high-voltage cabinet environments with strong electromagnetic interference. The control box, made of cold-rolled steel plate and grounded, provides electromagnetic shielding and physical protection. The controller 700 has 12 digital inputs and 8 digital outputs, supports the Modbus RTU communication protocol, and has a built-in anti-electromagnetic interference module, enabling stable operation even in the strong electromagnetic environment of the high-voltage cabinet, with an anti-interference voltage ≥2kV. The controller 700 is electrically connected to the sensor 600, alarm, drive assembly 240, electromagnetic lock, and inert gas injector 800, respectively, to receive detection signals from the sensor 600, analyze fault states, and issue linkage control commands, realizing fully automated emergency handling.

[0039] According to another embodiment of the invention, such as Figure 1 and Figure 2 As shown, the cabinet 100 is equipped with an inert gas injector 800, which includes a high-pressure nitrogen cylinder and a pressure reducing valve. The outlet of the high-pressure nitrogen cylinder is connected to the pressurized inner liner through the pressure reducing valve to ensure that the dry powder in the storage box is sprayed out at high speed in the form of a gas-powder mixture. This is used to work in conjunction with the dry powder fire extinguisher to improve the fire extinguishing effect and prevent reignition. The inert gas injector 800 includes a high-pressure nitrogen cylinder, a pressure reducing valve, and a pressurized inner tank. The high-pressure nitrogen cylinder is made of 304 stainless steel, with a rated working pressure of 15 MPa and a volume of 10L, storing high-purity nitrogen (purity ≥99.99%). The pressure reducing valve is a TESCOM 44-4000 series precision pressure reducing valve, with a pressure adjustment range of 0.8-2.0 MPa to ensure stable output pressure. The pressurized inner tank is made of titanium alloy, offering high strength and light weight. It is sealed to the storage tank via a flange. High-pressure nitrogen enters the pressurized inner tank after being reduced in pressure by the pressure reducing valve, creating a pressure environment of 0.8-1.2 MPa within the storage tank. This pressure propels the dry powder as a high-speed gas-powder mixture, providing wider coverage and faster fire extinguishing. Simultaneously, nitrogen fills the isolation space, reducing the oxygen concentration to below 10%, inhibiting combustion reactions and preventing reignition at the source.

[0040] Working principle and usage of this invention: First, it should be clarified that the emergency handling device involved in this invention is mainly used for safety protection and emergency handling operations of various electrical cabinets. This invention takes the emergency handling of a high-voltage cabinet during operation as an example to explain its working principle and usage method in detail. The working principle is as follows: The operation of this high-voltage switchgear emergency response device is divided into normal operation, emergency response, and reset / maintenance states. In each state, all components work collaboratively to achieve intelligent protection throughout the entire process. Normal operating state: The controller 700 controls the drive assembly 240 to be in a retracted state. The two protective plates 210 are located on both sides of the cabinet 100, separated, and the heat sink 220 is fully exposed inside the cabinet 100. The heat generated by the electrical components is quickly conducted to the air through the honeycomb fins of the heat sink 220 and then discharged through the pre-set ventilation grille of the cabinet 100, keeping the temperature inside the cabinet within a safe range of ≤85℃ and ensuring the stable operation of the electrical components. Three types of sensors 600 monitor the status inside the cabinet in real time: the temperature detector continuously collects temperature data from key parts such as the busbar and circuit breaker; the smoke sensor 600 monitors the presence of smoke particles; and the dry powder level detector monitors the dry powder level in the fire extinguisher. All monitoring data are transmitted to the controller 700 in real time. The controller 700 analyzes the data in real time. If all parameters are within the set threshold range (temperature ≤85℃, dry powder level ≥1 / 3), the device remains in standby state, the alarm does not activate, and the fire extinguisher is locked by an electromagnetic lock.

[0041] Emergency Response Status: When a malfunction occurs inside the cabinet, triggering any of the following signals will immediately put the device into emergency response status: the temperature detector detects a temperature exceeding 85°C; the smoke sensor 600 detects excessive smoke concentration; the dry powder level detector detects that the dry powder level is below 1 / 3 (only triggers the alarm, does not initiate the fire extinguishing process).

[0042] The specific emergency actions are as follows: Signal reception and judgment: The controller 700 quickly receives the abnormal signal from the sensor 600, determines the fault type (high temperature fault / fire fault / insufficient dry powder) through the built-in program, and immediately initiates linkage control; Isolation and sealing: The controller 700 sends an extension command to the drive assembly 240, the electric push rod / hydraulic push rod piston rod extends or the linear slide block moves, driving the slide plate 250 and sealing plate 230 to move towards the heat sink 220. At the same time, another protective plate 210 moves synchronously along the slide rail through the linkage slider. The two protective plates 210 slide relative to each other until the heat sink 220 is precisely embedded in the through groove of the sealing plate 230. The silicone rubber sealing gasket is tightly attached to the heat sink 220, forming a sealed isolation space, completely isolating the faulty electrical components from the outside, and blocking the spread of fire and smoke; Fire extinguishing activation: If it is a high temperature or fire fault, the controller 700 Synchronous control of the electromagnetic lock unlocks upon power failure and simultaneously sends a start command to the inert gas injector 800. The pressure reducing valve opens, and high-pressure nitrogen enters the pressurized inner tank after pressure reduction. The pressure inside the storage tank rapidly increases to 0.8-1.2 MPa, propelling dry powder to be ejected at high speed in the form of a gas-powder mixture, covering the fault area and quickly suppressing the fire. Enhanced fire prevention: Nitrogen continuously fills the isolation space, replacing the air and reducing the oxygen concentration to below 10%. The lack of oxygen prevents the combustion reaction from continuing, effectively avoiding reignition. Alarm and signal upload: The controller 700 triggers the Schneider XVR series audible and visual alarm, emitting a high-decibel buzzer and a red flashing alarm. Simultaneously, the fault type and the operating status of each component (protective plate 210 closed status, fire extinguishing activation status, and dry powder remaining) are transmitted to the background monitoring system via the Modbus RTU communication protocol, allowing staff to remotely monitor the situation.

[0043] Reset maintenance status: After the fault is resolved, staff send a reset command via the back-end monitoring system or the manual reset button on controller 700. The controller 700 controls the drive component 240 to retract, causing the two protective plates 210 to separate and reset, restoring the heat dissipation channel; Staff opened the storage box, replaced or replenished the dry powder fire extinguishers, and then locked it again using the electromagnetic lock. Check the pressure of the high-pressure nitrogen cylinder. If the pressure is below 10MPa, add nitrogen to 15MPa through the nitrogen filling port. The controller 700 clears the fault record, the sensor 600 resumes normal monitoring, and the device returns to normal operation.

[0044] The usage method is as follows: The use of this device includes three core aspects: installation and commissioning, routine maintenance, and emergency response. The specific operating procedures are as follows: Installation and Commissioning: Cabinet 100 Installation: Based on the installation location and dimensions of the high-voltage switchgear, fix the cabinet 100 of this device to the concrete foundation or steel structure support using expansion bolts, ensuring that the cabinet 100 is level and stable, and that the safe distance between the cabinet 100 and surrounding equipment is ≥0.5m; Component Assembly: Install the two protective plates 210 on the slide rails inside the cabinet 100 using sliders, and apply molybdenum disulfide grease; fix the heat dissipation plate 220 to the end of one of the protective plates 210 using countersunk bolts, and fix the sealing plate 230 to the sliding plate 250 using a vulcanization process, then connect the sliding plate 250 to the drive assembly 240, and fix the drive assembly 240 in the mounting groove of the protective plate 210; Sensing and Control Assembly: Install the temperature detector near the busbar connector and circuit breaker contacts, and the smoke detector... The fog sensor 600 is installed in the center of the top surface inside the cabinet 100, and the dry powder balance detector is installed in the bottom of the storage box. The control box of the controller 700 is fixed to the outer wall of the cabinet 100. The power and signal lines of the sensor 600, drive assembly 240, electromagnetic lock, alarm, and inert gas injector 800 are connected. After wiring, a multimeter is used to check the continuity of the circuit to ensure there are no short circuits or loose connections. Fire extinguishing system assembly: The external dry powder fire extinguisher is placed in the storage box and locked with the electromagnetic lock. The high-pressure nitrogen cylinder is fixed to a bracket on one side of the cabinet 100. A pressure reducing valve and a pressurized inner tank are connected via pipes. The pressurized inner tank is sealed to the storage box via a flange. After connection, an airtightness test is performed (pressure 0.5 MPa, pressure held for 30 minutes without leakage). Parameter setting and testing: This is done using STEP... Connect the controller 700 to the 7-Micro / WIN SMART software and set the parameters: temperature alarm threshold 85℃, dry powder low material level threshold 1 / 3, nitrogen injection pressure 1.0MPa; no-load test: start the controller 700, control the extension and retraction of the drive component 240, and check whether the protective plate 210 slides smoothly and whether the sealing plate 230 and the heat sink 220 are accurately connected; heat the temperature detector with a standard heat source and trigger the smoke sensor 600 through the smoke generator to simulate a fault signal, and check whether the alarm is working properly with sound and light, whether the fire extinguishing system is spraying normally, and whether the controller 700 is accurately uploading status signals; after the test is completed, reset all components, and the device enters normal operation.

[0045] Daily maintenance: Daily inspection: Observe the appearance of the cabinet 100, check whether the anti-corrosion insulation layer 300 is peeling or damaged, and repair it with epoxy resin repair agent if there is any damage; check whether the alarm is working properly, and whether the dry powder in the transparent observation window of the storage box is sufficient; Weekly maintenance: Clean the honeycomb fins of the heat sink 220, and blow away dust and debris with compressed air (pressure ≤0.3MPa) to ensure that the heat dissipation channel is unobstructed; check the sliding of the protective plate 210, and add molybdenum disulfide grease if there is any jamming; Monthly maintenance: Calibrate the sensor 600, calibrate the temperature detector with a standard temperature source (error ≤0.3℃), and calibrate the smoke sensor 60 with a standard smoke generator. 0; Check the pressure of the high-pressure nitrogen cylinder using the pressure gauge on the cylinder body. If the pressure is below 10MPa, replenish nitrogen promptly; Quarterly maintenance: Check the grounding of the controller 700's control box, use an oscilloscope to test the controller 700's anti-interference performance, and ensure signal stability in a strong electromagnetic environment; Check the pressure pointer of the dry powder fire extinguisher. If the pointer is in the red zone, replace it immediately; Annual maintenance: Perform insulation resistance testing on the composite board of the cabinet 100 and the isolation protection component 200; Check the operating status of the drive component 240, test the thrust and stroke of the electric push rod, and test the positioning accuracy of the linear slide; Back up the controller 700's program and update the communication protocol of the background monitoring system.

[0046] Emergency Response: Alarm Response: Upon hearing the audible and visual alarm or receiving a fault notification from the back-end monitoring system, personnel should arrive at the scene within 5 minutes and check the fault type (high temperature / smoke / insufficient dry powder) on the controller 700's display screen; Fire Handling: If it is a high temperature or smoke fault, after confirming there is no danger to personnel on site, no manual intervention is required, as the device has automatically initiated the isolation and fire extinguishing procedures; if the fire is large, external fire extinguishing equipment can be used to assist in fire extinguishing, while simultaneously cutting off the main power supply to the area to prevent electric shock accidents; Insufficient Dry Powder Handling: If it is an alarm indicating insufficient dry powder remaining... Staff should replace or replenish dry powder fire extinguishers within 24 hours to ensure the device regains full protective capability; Post-fault handling: After the fire is extinguished and the site is safe, disconnect the power supply to the high-voltage cabinet, open the cabinet door 100, check the damage to electrical components, and replace any damaged parts; clean the isolation and protection components 200 to remove residual dry powder and debris; check the sealing gasket of the sealing plate 230 for damage, and replace it promptly if damaged; Resumption of operation: After all fault handling is completed, operate according to the reset maintenance procedure, and only after confirming that all components of the device are normal can the high-voltage cabinet be restored to operation.

[0047] This invention can effectively block high-temperature fires inside high-voltage cabinets through the isolation and protection component 200, preventing the fire from spreading. It has higher safety protection efficiency and better effect, solving the problems of traditional isolation and protection devices, which are mostly manually operated or have fixed structures, have slow emergency response speed, and cannot quickly isolate the fault area from the outside when a fault occurs, leading to the spread of fire or harmful gases and posing a great safety hazard.

[0048] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-voltage switchgear emergency handling device, comprising a cabinet (100), characterized in that: The cabinet (100) is equipped with isolation and protection components (200) on both sides of the electrical components. The isolation and protection components (200) include protective plates (210) that are slidably disposed inside the cabinet (100). One of the protective plates (210) has a heat dissipation plate (220) at one end and a sealing plate (230) at the other end. The sealing plate (230) has a through groove that matches the height of the heat dissipation plate (220).

2. The high-voltage switchgear emergency handling device as described in claim 1, characterized in that: The protective plate (210) located on the side of the heat sink (220) has an installation groove inside, and a drive assembly (240) is provided inside the installation groove. A sliding plate (250) is provided at the end of the drive assembly (240), and a sealing plate (230) is provided at the end of the sliding plate (250).

3. The high-voltage switchgear emergency handling device as described in claim 2, characterized in that: The drive assembly (240) is a telescopic push rod, and the slide plate (250) is disposed at the end of the telescopic push rod.

4. The high-voltage switchgear emergency handling device as described in claim 3, characterized in that: The telescopic push rod is either an electric push rod or a hydraulic push rod.

5. The high-voltage switchgear emergency handling device as described in claim 2, characterized in that: The drive assembly (240) is a linear slide, and the sealing plate (230) is disposed on the slider of the linear slide.

6. The high-voltage switchgear emergency handling device as described in claim 1, characterized in that: The cabinet (100) and the isolation and protection component (200) are both made of composite material and are board structures, including a corrosion-resistant insulation layer (300), an adhesive layer (400) and a substrate layer (500) connected sequentially from the outside to the inside, wherein the adhesive layer (400) is used to connect the corrosion-resistant insulation layer (300) and the substrate layer (500).

7. The high-voltage switchgear emergency handling device as described in claim 6, characterized in that: The isolation and protection assembly (200) also includes a storage box inside the cabinet (100) located below the upper protective plate (210), and the storage box is equipped with a fire extinguisher.

8. The high-voltage switchgear emergency handling device as described in claim 1, characterized in that: The cabinet (100) is equipped with a sensor (600).

9. The high-voltage switchgear emergency handling device as described in claim 8, characterized in that: The cabinet (100) is equipped with a controller (700) that is electrically connected to the sensor (600).

10. The high-voltage switchgear emergency handling device as described in claim 1, characterized in that: An inert gas injector (800) is installed inside the cabinet (100).

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