CN117039695A - Switch cabinet with deformation monitoring and automatic control functions - Google Patents

Abstract

The invention discloses a switch cabinet with deformation monitoring and automatic control functions, which relates to the technical field of switch cabinets and comprises a cabinet body, wherein radiating fins are arranged above the cabinet body, the radiating fins penetrate through the cabinet body, a main body is arranged on one side of the interior of the cabinet body, the main body is positioned below the radiating fins, an arc striking net is arranged in the middle of the cabinet body, a plurality of metal tips are arranged on the arc striking net, the arc striking net is detachably connected with the cabinet body, the positions of the arc striking net and the main body correspond to each other, a piston plate and a control rod are arranged above the interior of the cabinet body, and the piston plate is movably connected with the cabinet body through the control rod. According to the invention, the metal tip actively attracts the electric arc, so that the generated electric arc is mutually perpendicular to the radiating fins in the cabinet body from the overlook angle, then the gas density is changed, the movement of the gas flow is controlled, the electric arc is cut, and the electric arc is accelerated to quickly disappear.

Description

A switch cabinet with deformation monitoring and automatic control functions

Technical field

The invention relates to the technical field of switch cabinets, specifically a switch cabinet with deformation monitoring and automatic control functions.

Background technique

The main function of the switchgear is to open and close, control and protect electrical equipment during the power generation, transmission, distribution and power conversion processes of the power system. The components in the switch cabinet mainly include circuit breakers, isolating switches, load switches, operating mechanisms, transformers and various protection devices. There are many ways to classify switch cabinets. For example, they can be divided into removable switch cabinets and fixed switch cabinets according to the circuit breaker installation method; or according to the different cabinet structures, they can be divided into open switch cabinets, metal-enclosed switch cabinets, and metal-enclosed switch cabinets. Armored switchgear; according to different voltage levels, it can be divided into high-voltage switchgear, medium-voltage switchgear and low-voltage switchgear.

During the use of the switch cabinet, due to the influence of external factors, arcs will be generated inside the switch cabinet. The arc generation process is accompanied by a large amount of heat. The arc will heat the air inside the switch cabinet, causing the air to expand and produce a temperature sudden change in the interior of the switch cabinet in a short period of time. Changes and instantaneous rises in air pressure will cause impact on the connections of the switch cabinet, causing the switch cabinet to deform.

Contents of the invention

The purpose of the present invention is to provide a switch cabinet with deformation monitoring and automatic control functions to solve the problems raised in the above background technology.

In order to solve the above technical problems, the present invention provides the following technical solution: a switch cabinet with deformation monitoring and automatic control functions, including a cabinet body, with heat dissipation fins installed above the cabinet body, and the heat dissipation fins penetrate the cabinet body , a main body is installed on one side of the interior of the cabinet, and the main body is located below the heat dissipation fins. An arc-starting net is installed in the middle of the cabinet, and several metal tips are installed on the arc-starting net. The arc-starting net It is detachably connected to the cabinet body, and the position of the arc ignition net corresponds to that of the main body;

A piston plate and a control rod are installed above the interior of the cabinet. The piston plate is movably connected to the cabinet through the control rod. The outer wall size of the piston plate matches the outer wall size of the cooling fins in the cabinet;

The control rod is electrically connected to the arc ignition net, and a circuit protection element is provided on the circuit of the control rod connecting the arc ignition net; during use, a sufficient amount of protective gas needs to be filled inside the cabinet, and the protective gas is preferably SF. _6. The main body will generate heat during operation. The heat is conducted to the area where the heat dissipation fins are located above through the protective gas. Since the heat dissipation fins penetrate the cabinet, that is, part of the heat dissipation fins are located on the outside of the cabinet, the role of the heat dissipation fins is It is to continuously conduct the heat inside the cabinet to the external environment;

An arc net is installed in the direction opposite to the main body in the cabinet, and a sufficient number of metal tips are installed on the arc net. The function of the metal tips is: when the main body discharges inside the cabinet, the arc is more easily collected by the protruding tips. , so the metal tip is to limit the end point of the arc to avoid contact between the arc and other components on the body. At the same time, there is an electrical connection between the arc net and the control rod, and there is a circuit between the arc net and the control rod. Circuit protection components include power supplies or capacitors. When the main body generates an arc and the arc falls on the metal tip, the circuit between the arc net and the control rod will be connected, and the current inside the circuit will pass through The circuit protection element then enters the power supply or capacitor. The power supply or capacitor is used to temporarily store excess electrical energy, and when the arc is generated, it drives the control rod to drive the piston plate to move upward;

During the generation of the arc, a large amount of heat will be released. After the heat is absorbed by the protective gas near the arc, the protective gas expands rapidly, causing the air pressure inside the cabinet to rise. At the same time, the piston plate rises inside the cabinet, and the piston plate and the cabinet The distance between the bottom plates of the cabinet is increased, and the storage space of the protective gas is increased to reduce the air pressure rise rate inside the cabinet and reduce the air pressure intensity. During the rising process of the piston plate, it will simultaneously drive the protective gas inside the cabinet. Movement upward, while the piston plate rises relative to the heat dissipation fins, so that after the piston plate rises, the contact area between the heat dissipation fins and the protective gas increases;

There is an air pressure monitoring element under the piston plate inside the cabinet. The air pressure monitoring element in the space under the piston plate inside the cabinet is used to monitor the air pressure in the space under the piston plate inside the cabinet in real time to avoid the increase in air pressure due to gas collision and the deformation of the cabinet due to the increase in air pressure.

Further, an air flow control component is provided below the arc ignition net. The arc ignition net isolates the internal middle area of the cabinet. The air flow control component penetrates the inner wall of the side of the cabinet where the main body is located. The control component is located directly below the heat dissipation fins. The airflow control component is used to provide upward movement of airflow inside and outside the cabinet. The arc net and the cabinet are detachably connected. Before the main body is working, the arc net needs to be removed. Installed in the area corresponding to the main body, the arc net divides the space in front of the main body into two areas, front and rear. At the same time, an air flow control component is installed below the main body. The air flow control component runs through the cabinet and the air flow control components are on both sides of the cabinet inside and outside. An upward-moving airflow is generated inside the cabinet. The direction of movement of the airflow will pass through the area where the main body is located. Since the upper and lower ends of the arc-starting net are connected, the airflow inside the gap between the arc-starting net and the main body is upward. Movement, reversely pushes the airflow on the other side of the arc net to flow downward, thereby forming a circulating airflow inside the cabinet, and the circulating airflow will pass through the area where the heat dissipation fins are located;

The airflow control component located on the outside of the cabinet synchronously generates upward-moving airflow. The airflow will pass through the area where the heat dissipation fins are located on the outside of the cabinet, so that the heat carried on the heat dissipation fins can be quickly lost. The airflow on the outside of the cabinet moves in one direction. The protective gas inside the cabinet is in an internal circulation state, and the two airflow states cooperate with each other to accelerate the rapid dissipation of the heat generated during the operation of the main body.

Further, the air flow control assembly includes a housing and four one-way valves. The four one-way valves are located on the upper and lower sides of both ends of the housing. The housing penetrates the cabinet, and there is a The sliding plate and the driving rod, the driving rod is located at the front and rear ends of the sliding plate, the sliding plate is connected to the housing through the driving rod, the outer wall size of the sliding plate matches the inner wall size of the housing; the functions of the four one-way valves It is a position that limits the input and output of air flow. The one-way valve located below the casing can only realize the air flow entering the one-way valve from the outside. At the same time, the one-way valve located above the casing can only realize the air flow leaving the casing. The driving rod The sliding plate is pushed to move horizontally in the housing. The sliding plate divides the housing into two spaces, the front and rear, and a one-way valve is provided on the upper and lower sides of each space. The two spaces are respectively connected to the spaces on both sides of the cabinet inside and outside. When the sliding plate During the horizontal sliding inside the shell, the volume of the space on both sides of the skateboard is constantly changing. When the volume of the space continues to increase, the air pressure inside the space decreases, and the airflow outside the shell can pass through the one-way gap under one side of the space. The valve enters the space to maintain the air pressure balance inside the space. Then when the volume of the space continues to decrease, the air pressure inside the space rises, so that the air flow inside the space leaves through the one-way valve above one side of the space, and the driving rod continues to work. To maintain airflow movement on both sides inside and outside the cabinet, and cooperate with the heat dissipation fins to accelerate the heat dissipation of the main body;

The space inside the cabinet and the space inside the cooling fins are separated from each other. The space inside the cabinet is connected with the space on the right side of the slide plate in the air flow control assembly. Secondly, the space on the right side of the slide plate in the air flow control assembly is connected with the outside environment. When the slide plate When sliding left and right inside, with the one-way valves on the left and right sides of the casing, the air flow on the left and right sides of the sliding plate inside the casing can only move from bottom to top, thereby achieving internal air circulation inside the cabinet and achieving the desired effect of the cabinet. Air movement is generated on the outside.

Further, the air flow control assembly also includes several communication plates, the communication plates are parallel to the driving rods, the communication plates are hollow structures, and openings are provided at the upper and lower ends of one side of the communication plates, and the middle part of the communication plates is provided with There is a horizontal plate, and there is a through hole in the horizontal plate and the communication plate. The through hole is on the side of the housing away from the cabinet; the structure of the communication plate is such that the air flow areas on both sides of the skateboard mesh with each other to improve the performance of the skateboard. The heat transfer between the air flows on both sides, because the protective gas movement mode inside the cabinet is internal circulation, the air flow outside the cabinet is connected with the external environment, and there is a body inside the cabinet that is always in a heat-releasing state, making the cabinet The internal temperature should always be higher than the outside ambient temperature;

Since the AC board is a hollow structure, and only the right side of the AC board is provided with an opening, the AC board is only connected to the space on the right side of the skateboard in the housing. Since the AC board is longer than the horizontal movement length of the skateboard, the skateboard is in the housing. When the internal circulation moves horizontally, the external circulation airflow will pass through the outer wall of the AC plate. At the same time, when the internal circulation airflow is generated, the internal circulation airflow will come into contact with the external circulation airflow through the AC plate, thereby realizing the movement space of the internal circulation airflow and the movement of the external circulation airflow. The spaces mesh with each other, and the two groups of air flows mesh with each other to increase the contact area and improve the heat transfer effect between the internal and external circulating air flows.

Furthermore, the upper part of the communication plate is connected to the one-way valve located above the inside of the cabinet. A rectangular gap is opened on the side of the communication plate close to the one-way valve located below the inside of the cabinet; the shell is divided into two spaces by a sliding plate. , the space on the side where the gap is located is connected with the space inside the cabinet (hereinafter referred to as the internal circulation space, and the space on the side of the casing connected with the external environment is the external circulation space), in which there is a communication plate and horizontal plate. The horizontal plate separates the AC plate into two spaces, the upper and lower spaces. Since there is a through hole between the AC plate and the horizontal plate, and the through hole is on the side of the horizontal plate close to the outer circulation space, the distance between the horizontal plate and the through hole The setting is to change the flow path of the protective gas in the internal circulation space;

The upper end of the AC plate is connected to the one-way valve above the shell, so that the upper part of the AC plate is the air outlet. The arrangement of the horizontal plate and the through hole realizes the protection of the lower part of the horizontal plate when the slide plate changes the volume of the internal circulation space. The gas needs to pass through the through hole under the guidance of the horizontal plate. The purpose is to control the protective gas to pass through the range of the outer circulation space. That is, the air flow path inside the outer circulation space meshes with the air flow in the inner circulation space to realize the protection gas in the shell. During the internal movement of the body, part of the heat carried by the protective gas is transferred to the air flow in the external circulation space through the exchange plate;

A rectangular notch is provided on the lower side of the communication board. Through the rectangular notch, the space on the right side of the skateboard in the housing is connected to the internal space of the communication board, and the space in the communication board and the gap between the communication boards are both connected to facilitate the movement of the skateboard. During this period, the volume of the inner circulation space is changed.

Further, the heat dissipation fins are composed of two parts. The lower surface of the heat dissipation fins located on the outside of the cabinet is a bevel. The heat dissipation fins located inside the cabinet and the heat dissipation fins located on the outside of the cabinet. They are perpendicular to each other, and the upper and lower ends of the heat dissipation fins on both sides of the cabinet are connected.

Further, the heat dissipation fins have a heat pipe structure, and an insulating heat conductive layer is provided inside the heat dissipation fins. The insulating heat conduction layer is preferably alumina; the heat dissipation fins on the outside of the cabinet are in contact with the heat dissipation fins on the inside of the cabinet. Vertical, because the lower end surface of the cooling fins on the outside of the cabinet is a bevel, the working fluid inside the cooling fins on the outside of the cabinet falls after cooling and liquefying, and then follows the slope on the inside of the cooling fins toward the cooling fins on the inside of the cabinet. When the side of the cabinet moves, the liquefied working fluid in the cooling fins on the inside of the cabinet evaporates after being heated. The flow of working fluid formed after evaporation rises to the top of the cooling fins. The upper and lower sides of the cooling fins on both sides of the cabinet are The ends are connected, and the radiating fins on both sides of the cabinet inside and outside are divided into two parts by the side panels of the cabinet. Since the working fluid inside the radiating fins on the outside of the cabinet is continuously cooled and liquefied, the air pressure inside the radiating fins on the outside of the cabinet increases. Continuously lowering, which requires the gaseous working fluid inside the cooling fin on the inside of the cabinet to continuously move into the other cooling fin, so that the working fluid forms a movement cycle in the two parts of the cooling fin;

When an arc occurs inside the cabinet, the piston plate moves upwards driven by the control rod, causing the volume of the space below the piston plate to continue to increase. The protective gas inside the cabinet fills the newly added space, and part of the protective gas will move upward. Since the generation of arc requires air as the medium, when the airflow moves upward, the arc will form an upward movement deflection, that is, an arc with the opening downward. Since there are heat dissipation fins above the main body and the arc net, the arc will rise to When the heat dissipation fins are located in the area, the arc will be separated by the heat dissipation fins, forming several small arcs. After the arc is cut off, the current path between the main body and the arc net disappears, and some arcs are deformed due to large deformation. The length of the arc network is increased and the arc network is actively disconnected;

Aluminum oxide acts as a barrier between the heat sink fins, so that after the arc contacts the heat sink fins, the arc is separated from the working fluid inside the heat sink fins.

Further, a control valve is provided on the piston plate, and there is a chamber above the piston plate. The control valve is used to control the communication state between the chamber and the space below the piston plate; when the main body needs to be repaired, the control rod The piston plate is driven down and the control valve is opened, so that part of the protective gas in the space below the piston plate is transferred to the chamber (the volume of the chamber can actively change), and a large amount of protective gas moves from the bottom of the piston plate to the space above the piston plate. space, and then close the control valve. When the cabinet door is opened, the protective gas in the space above the cabinet is separated from the space below the piston plate by the piston plate, preventing the outside air from interacting with the space above the piston plate when the cabinet door is opened. The protective gas in the cabinet comes into contact, and a large amount of protective gas is retained during the maintenance period. You can open the cabinet door in front of the cabinet and remove the arc net to repair the main body. After the repair is completed, install the arc net and close the cabinet door. , the gas inside the cabinet is replaced so that the purity of the protective gas in the cabinet reaches the standard. Then the control rod drives the piston plate to rise and reset, and the control valve opens. The protective gas inside the chamber moves to the bottom of the piston plate again, and the piston plate and The structure of the control valve is designed to reduce the amount of protective gas that needs to be filled during maintenance.

Compared with the prior art, the beneficial effects achieved by the present invention are:

1. This switch cabinet with deformation monitoring and automatic control functions has two sets of heat dissipation fins on both sides of the inside and outside of the cabinet. The structural arrangement of the two sets of heat dissipation fins enables the two sets of heat dissipation fins to interact with each other. At the same time, it cooperates with the temperature difference between the inside and outside of the switch cabinet to achieve a circulation effect of the working fluid inside the two sets of cooling fins, accelerating the heat dissipation generated inside the switch cabinet;

2. In this switch cabinet with deformation monitoring and automatic control functions, through the setting of arc net and piston plate, the metal tip actively attracts arc, and then when viewed from a bird's eye view, the generated arc is perpendicular to the heat dissipation fins in the cabinet. , then change the gas density and control the air flow movement to cut the arc and accelerate the arc to disappear quickly. At the same time, the control rod and the arc net are electrically connected. When the arc is generated, the piston plate rises quickly to avoid the air pressure inside the switch cabinet. Rapid rise, causing deformation of the switch cabinet;

3. In this switch cabinet with deformation monitoring and automatic control functions, through the setting of the air flow control component, the driving rod drives the sliding plate to form air flows on both sides of the cabinet inside and outside respectively. The air flow inside the cabinet cooperates with the arc ignition net to realize the internal air flow. Circulation, during the movement of the two airflows in the casing, the movement spaces of the two airflows mesh with each other, and then the two airflows realize heat transfer inside the casing through the exchange plate, accelerating the heat dissipation inside the cabinet.

Description of the drawings

The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the invention and do not constitute a limitation of the present invention. In the attached picture:

Figure 1 is a schematic full cross-sectional structural view of the cabinet of the present invention;

Figure 2 is a schematic diagram of the three-dimensional structure of the heat dissipation fin of the present invention;

Figure 3 is a schematic diagram of the front full cross-sectional structure of the heat dissipation fin of the present invention;

Figure 4 is a schematic three-dimensional structural diagram of the arc net of the present invention;

Figure 5 is a schematic full cross-sectional structural view of the casing of the present invention;

Figure 6 is a schematic three-dimensional structural diagram of the skateboard and communication board of the present invention;

Figure 7 is a schematic three-dimensional structural diagram of a single AC panel of the present invention;

Figure 8 is a schematic full cross-sectional structural view of a single AC panel of the present invention.

In the picture: 1. Cabinet; 2. Cooling fins; 3. Main body; 4. Arc net; 401. Metal tip; 5. Piston plate; 501. Control valve; 502. Chamber; 6. Control rod; 7 , air flow control component; 701, housing; 702, one-way valve; 703, slide plate; 704, drive rod; 705, communication plate; 706, horizontal plate; 707, through hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Please refer to Figures 1 to 8. The present invention provides a technical solution: a switch cabinet with deformation monitoring and automatic control functions, including a cabinet 1, with heat dissipation fins 2 installed above the cabinet 1, and the heat dissipation fins 2 penetrate the cabinet. The body 1 and the heat dissipation fin 2 are composed of two parts. The lower surface of the heat dissipation fin 2 located outside the cabinet 1 is a slope. The heat dissipation fin 2 located inside the cabinet 1 is in contact with the heat dissipation fin 2 located outside the cabinet 1. Vertical, the upper and lower ends of the cooling fins 2 on both sides of the cabinet 1 are connected;

The heat dissipation fin 2 is a heat pipe structure, and an insulating heat conductive layer is provided inside the heat dissipation fin 2. The insulating heat conductive layer is preferably alumina;

There are two sets of heat dissipation fins 2 on both sides of the cabinet 1. The structural arrangement of the two sets of heat dissipation fins 2 enables the two sets of heat dissipation fins 2 to be connected to each other. At the same time, it cooperates with the temperature difference between the inside and outside of the switch cabinet, thereby realizing the two sets of heat dissipation fins 2. The working fluid inside the heat dissipation fin 2 forms a circulation effect and accelerates the heat dissipation generated inside the switch cabinet;

A main body 3 is installed on one side inside the cabinet 1. The main body 3 is located below the heat dissipation fins 2. An arc net 4 is installed in the middle of the cabinet 1. Several metal tips 401 are installed on the arc net 4. The arc net 4 It is detachably connected to the cabinet 1, and the positions of the arc net 4 and the main body 3 correspond to each other;

A piston plate 5 and a control rod 6 are installed above the interior of the cabinet 1. The piston plate 5 is movably connected to the cabinet 1 through the control rod 6. The outer wall size of the piston plate 5 matches the outer wall size of the cooling fins 2 in the cabinet 1. ;

A control valve 501 is provided on the piston plate 5. There is a chamber 502 above the piston plate 5. The control valve 501 is used to control the communication state between the chamber 502 and the space below the piston plate 5;

The control rod 6 is electrically connected to the arc starting network 4, and the circuit between the control rod 6 and the arc starting network 4 is provided with a circuit protection element;

The metal tip 401 actively attracts the arc, and when viewed from a bird's eye view, the generated arc is perpendicular to the heat dissipation fins 2 in the cabinet 1. Then the gas density is changed and the air flow movement is controlled to cut the arc and accelerate the arc to disappear quickly. At the same time, the control rod 6 and the arc net 4 are electrically connected. When the arc is generated, the piston plate 5 rises rapidly to prevent the air pressure inside the switch cabinet from rising rapidly, causing the switch cabinet to deform;

An air flow control component 7 is provided below the arc ignition net 4. The arc ignition net 4 isolates the internal middle area of the cabinet 1. The air flow control component 7 penetrates the inner wall of the cabinet 1 on the side where the main body 3 is located. The air flow control component 7 is located at Directly below the cooling fins 2, the airflow control assembly 7 is used to provide upward movement of airflow inside and outside the cabinet 1;

The air flow control assembly 7 includes a housing 701 and four one-way valves 702. The four one-way valves 702 are respectively located at the upper and lower sides of both ends of the housing 701. The housing 701 penetrates the cabinet 1. There are slide plates 703 and 703 inside the housing 701. Driving rod 704. The driving rod 704 is located at the front and rear ends of the sliding plate 703. The sliding plate 703 is connected to the housing 701 through the driving rod 704. The outer wall size of the sliding plate 703 matches the inner wall size of the housing 701;

The air flow control assembly 7 also includes several communication plates 705. The communication plates 705 are parallel to the driving rods 704. The communication plates 705 have a hollow structure, and openings are provided at the upper and lower ends of one side of the communication plate 705. A horizontal opening is provided in the middle of the communication plate 705. The plate 706, the horizontal plate 706 and the communication plate 705 have through holes 707, and the through holes 707 are on the side of the housing 701 away from the cabinet 1;

The top of the communication plate 705 is connected to the one-way valve 702 located above the interior of the cabinet 1. A rectangular gap is opened on the side of the communication plate 705 close to the one-way valve 702 located below the interior of the cabinet 1;

When the driving rod 704 drives the sliding plate 703 to work, the driving rod 704 is an existing technology. The driving rod is a pneumatic rod or a hydraulic rod, which forms airflow on both sides of the cabinet 1. The airflow inside the cabinet 1 cooperates with the arc net 4 to realize the airflow. Internal circulation, during the movement of the two airflows in the casing 701, the movement spaces of the two airflows mesh with each other, and then the two airflows realize heat transfer inside the casing 701 through the exchange plate 705, accelerating the heat dissipation inside the cabinet 1.

The working principle of the present invention: During use, a sufficient amount of protective gas needs to be filled inside the cabinet 1. The protective gas is preferably SF _6. The main body 3 will generate heat during operation, and the heat will be conducted to the upper heat dissipation fins through the protective gas. In the area where 2 is located, since the heat dissipation fins 2 penetrate the cabinet 1, that is, a part of the heat dissipation fins 2 is located on the outside of the cabinet 1, the function of the heat dissipation fins 2 is to continuously conduct the heat inside the cabinet 1 to the external environment;

An arc net 4 is installed in the cabinet 1 in a direction opposite to the main body 3, and a sufficient amount of metal tips 401 are installed on the arc net 4. The function of the metal tips 401 is: when the main body 3 discharges inside the cabinet 1 When the arc is moved, the arc is more likely to be collected by the protruding tip, so the metal tip 401 is used to define the end point of the arc and avoid contact between the arc and other components on the body 3. At the same time, there is an electrical connection between the arc net 4 and the control rod 6. The control rod 6 is an existing technology. The control rod is a pneumatic rod or a hydraulic rod, and a circuit protection element is provided on the circuit between the arc net 4 and the control rod 6. The circuit protection element includes a power supply or a capacitor. When the main body 3 generates an arc, When, and the landing point of the arc is on the metal tip 401, the circuit between the arc net 4 and the control rod 6 will be in a connected state, and the current inside the circuit enters the power supply or capacitor after passing through the circuit protection element, and the power supply or capacitor It is used to temporarily store excess electrical energy, and drive the control rod 6 to drive the piston plate 5 to move upward when the arc is generated;

During the generation of the arc, a large amount of heat will be released. After the heat is absorbed by the protective gas near the arc, the protective gas expands rapidly, causing the air pressure inside the cabinet 1 to rise. At the same time, the piston plate 5 rises inside the cabinet 1, and the piston The distance between the plate 5 and the bottom plate of the cabinet 1 increases. By increasing the storage space of the protective gas, the air pressure rise rate inside the cabinet 1 is reduced, and the air pressure intensity is reduced. During the rising process of the piston plate 5, the piston plate 5 will be synchronously The protective gas inside the cabinet 1 is driven to move upward, and at the same time the piston plate 5 rises relative to the heat dissipation fins 2, so that after the piston plate 5 rises, the contact area between the heat dissipation fins 2 and the protective gas increases;

The arc net 4 is detachably connected to the cabinet 1. Before the main body 3 is working, the arc net 4 needs to be installed in the area corresponding to the main body 3. The arc net 4 divides the front space of the main body 3 into two front and rear spaces. At the same time, an airflow control assembly 7 is installed below the main body 3, where the airflow control assembly 7 penetrates the cabinet 1. The airflow control assembly 7 generates upward airflow on both sides of the cabinet 1 and moves upward inside the cabinet 1. The airflow in the movement direction will pass through the area where the main body 3 is located. Since the upper and lower ends of the arc ignition net 4 are connected, the airflow in the gap between the arc ignition net 4 and the main body 3 moves upward, pushing the arc ignition net 4 in the opposite direction. The airflow on the other side flows downward, thereby forming a circulating airflow inside the cabinet 1, and the circulating airflow will pass through the area where the heat dissipation fins 2 are located;

The airflow control component 7 located on the outside of the cabinet 1 synchronously generates an upward-moving airflow. The airflow will pass through the area where the heat dissipation fins 2 are located on the outside of the cabinet 1, so that the heat carried on the heat dissipation fins 2 can be quickly lost. The cabinet 1 The airflow on the outside moves in one direction, and the protective gas inside the cabinet 1 is in an internal circulation state. The two airflow states cooperate with each other to accelerate the rapid dissipation of the heat generated during the operation of the main body 3;

The function of the four one-way valves 702 is to limit the input and output positions of the air flow. The one-way valve 702 located below the casing 701 can only realize the airflow entering the one-way valve 702 from the outside. At the same time, the one-way valve 702 located above the casing 701 The valve 702 can only realize the airflow leaving the casing 701. The driving rod 704 pushes the sliding plate 703 to move horizontally in the casing 701. The sliding plate 703 divides the casing 701 into two front and rear spaces, and each space is provided with upper and lower sides. There is a one-way valve 702, and the two spaces are connected to the spaces on both sides of the cabinet 1. When the sliding plate 703 slides horizontally inside the housing 701, the space volume on both sides of the sliding plate 703 is constantly changing. When the space volume is During the continuous increase, the air pressure inside the space decreases, and the air flow outside the housing 701 can enter the space through the one-way valve 702 under one side of the space to maintain the air pressure balance inside the space. Subsequently, when the space volume continues to decrease, The air pressure inside the space rises, so that the air flow inside the space leaves through the one-way valve 702 on one side of the space. The driving rod 704 continues to work to maintain air flow movement on both sides of the cabinet 1, and cooperates with the heat dissipation fins 2 to accelerate the main body 3 heat dissipation;

The structural arrangement of the communication plate 705 enables the air flow areas on both sides of the sliding plate 703 to mesh with each other to improve the heat transfer between the air flows on both sides of the sliding plate 703. Since the protective gas movement mode inside the cabinet 1 is internal circulation, the outside of the cabinet 1 The air flow is connected with the external environment, and there is a main body 3 inside the cabinet 1 that is always in a heat-releasing state, so that the internal temperature of the cabinet 1 is always higher than the external ambient temperature;

The casing 701 is divided into two spaces by the sliding plate 703. The space on the side where the gap is located is connected to the space inside the cabinet 1, which is hereinafter referred to as the internal circulation space. The space on the side of the casing 701 that is connected to the external environment is the external space. Circulation space, in which the communication plate 705 and the horizontal plate 706 are provided in the inner circulation space. The horizontal plate 706 separates the communication plate 705 into two upper and lower spaces. Since there is a through hole 707 between the communication plate 705 and the horizontal plate 706, and the through hole 707 is on the side of the horizontal plate 706 close to the outer circulation space. The horizontal plate 706 and the through hole 707 are provided to change the flow path of the protective gas in the inner circulation space;

The upper end of the communication plate 705 is connected with the one-way valve 702 above the housing 701, so that the upper part of the communication plate 705 is the air outlet. The arrangement of the horizontal plate 706 and the through hole 707 allows the sliding plate 703 to change the volume of the internal circulation space. , the protective gas under the horizontal plate 706 needs to pass through the through hole 707 under the guidance of the horizontal plate 706, the purpose is to control the protective gas to pass through the range of the outer circulation space, that is, the air flow movement path inside the outer circulation space and the inner circulation space The air flows mesh with each other, so that during the movement of the protective gas inside the shell 701, part of the heat carried by the protective gas is transferred to the air flow in the outer circulation space through the exchange plate 705;

A rectangular notch is provided on the lower side of the communication plate 705. Through the rectangular notch, the communication plates 705 in the inner circulation space are connected to each other, and the space in the communication plate 705 and the gap between the communication plates 705 are both connected, so as to facilitate the skateboarding. 703 changes the volume of the internal circulation space during exercise;

The heat dissipation fins 2 on the outside of the cabinet 1 are perpendicular to the heat dissipation fins 2 on the inside of the cabinet 1. Since the lower surface of the heat dissipation fins 2 on the outside of the cabinet 1 is a bevel, the working fluid inside the heat dissipation fins 2 on the outside of the cabinet 1 is After being cooled and liquefied, it falls and then moves along the slope inside the radiator fin 2 toward the side of the radiator fin 2 inside the cabinet 1. The liquefied working fluid in the radiator fin 2 inside the cabinet 1 evaporates after being heated. , the working fluid flow formed after evaporation rises to the inside of the heat sink 2. The upper and lower ends of the heat sink 2 on both sides of the cabinet 1 are connected. The heat sink 2 on both sides of the cabinet 1 are connected by the cabinet. The side panel partition of 1 is divided into two parts. Since the working fluid inside the cooling fins 2 on the outside of the cabinet 1 is continuously cooled and liquefied, the air pressure inside the cooling fins 2 on the outside of the cabinet 1 is continuously reduced, which in turn requires the cooling fins on the inside of the cabinet 1. The gaseous working fluid inside the fin 2 continuously moves into the other heat dissipating fin 2, so that the working fluid forms a movement cycle in the two heat dissipating fins 2;

When an arc occurs inside the cabinet 1, the piston plate 5 moves upward driven by the control rod 6, causing the volume of the space below the piston plate 5 to continuously increase. The protective gas inside the cabinet 1 fills the newly added space and partially protects the arc. The gas will move upward. Since the generation of the arc requires air as a medium, when the air flow moves upward, the arc will form an upward movement deflection, which is an arc with the opening downward. Since the upper part of the main body 3 and the arc net 4 is a heat dissipation Fin 2, when the arc rises to the area where the heat dissipation fin 2 is located, the arc will be separated by the heat dissipation fin 2, forming several small arcs. After the arc is separated, the current between the main body 3 and the arc net 4 The path disappears, and some arcs are actively disconnected due to the large deformation produced, which increases the length of the arc network;

Aluminum oxide acts as an interlayer of the heat sink fin 2, so that after the arc contacts the heat sink fin 2, the arc is separated from the working medium inside the heat sink fin 2;

When the main body 3 needs to be repaired, the control rod 6 drives the piston plate 5 down, and the control valve 501 opens, so that part of the protective gas in the space below the piston plate 5 is transferred to the chamber 502, and the volume of the chamber 502 can be actively changed. Then close the control valve 501, open the cabinet door in front of the cabinet 1 and remove the arc net 4, and then repair the main body 3. After the repair is completed, install the arc net 4 and close the cabinet door to inspect the internal components of the cabinet 1. The gas is replaced until the purity of the protective gas in the cabinet 1 reaches the standard. Then the control rod 6 drives the piston plate 5 to rise and reset, and the control valve 501 opens. The protective gas in the chamber 502 moves to the bottom of the piston plate 5 again, and the piston plate 5 and the control valve 501 are configured to reduce the amount of protective gas that needs to be filled during maintenance.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment.

Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. A switch cabinet with deformation monitoring and automatic control functions, including a cabinet (1), characterized in that: a heat dissipation fin (2) is installed above the cabinet (1), and the heat dissipation fin ( 2) Penetrating the cabinet (1), a main body (3) is installed on one side of the cabinet (1). The main body (3) is located below the heat dissipation fins (2). Inside the cabinet (1) An arc-starting net (4) is installed in the middle, and several metal tips (401) are installed on the arc-starting net (4). The arc-starting net (4) is detachably connected to the cabinet (1). The positions of the arc net (4) and the main body (3) correspond to each other; A piston plate (5) and a control rod (6) are installed above the interior of the cabinet (1). The piston plate (5) is movably connected to the cabinet (1) through the control rod (6). The piston plate The outer wall size of (5) matches the outer wall size of the cooling fins (2) in the cabinet (1); The control rod (6) is electrically connected to the arc-starting net (4), and a circuit protection element is provided on the circuit between the control rod (6) and the arc-starting net (4). 2. A switch cabinet with deformation monitoring and automatic control functions according to claim 1, characterized in that: an air flow control component (7) is provided below the arc starting network (4), and the arc starting network (4) Separate the internal middle area of the cabinet (1), and the air flow control assembly (7) penetrates the inner wall of the side where the upper body (3) of the cabinet (1) is located. The air flow control assembly (7) is located Directly below the heat dissipation fins (2), the airflow control assembly (7) is used to provide upward movement of airflow inside and outside the cabinet (1). 3. A switch cabinet with deformation monitoring and automatic control functions according to claim 2, characterized in that: the air flow control component (7) includes a housing (701) and four one-way valves (702), The four one-way valves (702) are respectively located on the upper and lower sides of the two ends of the housing (701). The housing (701) penetrates the cabinet (1). A slide plate (703) is provided inside the housing (701). ) and the driving rod (704), the driving rod (704) is located at the front and rear ends of the sliding plate (703), the sliding plate (703) is connected to the housing (701) through the driving rod (704), the sliding plate (704) The outer wall dimensions of 703) match the inner wall dimensions of housing (701). 4. A switch cabinet with deformation monitoring and automatic control functions according to claim 3, characterized in that: the air flow control assembly (7) also includes several communication boards (705), and the communication boards (705 ) is parallel to the driving rod (704), the communication plate (705) is a hollow structure, and openings are provided at the upper and lower ends of one side of the communication plate (705), and a horizontal plate (706) is provided in the middle of the communication plate (705) , there are through holes (707) in the horizontal plate (706) and the communication plate (705), and the through holes (707) are on the side of the housing (701) away from the cabinet (1). 5. A switch cabinet with deformation monitoring and automatic control functions according to claim 4, characterized in that: the top of the AC plate (705) and the one-way valve (702) located above the inside of the cabinet (1) ) are connected, and a rectangular gap is opened on the side of the AC board (705) close to the one-way valve (702) located underneath the cabinet (1). 6. A switch cabinet with deformation monitoring and automatic control functions according to claim 1, characterized in that: the heat dissipation fins (2) are composed of two parts, and the heat dissipation fins located outside the cabinet (1) The lower surface of the fins (2) is an inclined plane, and the heat dissipation fins (2) located inside the cabinet (1) are perpendicular to the heat dissipation fins (2) located outside the cabinet (1). The upper and lower ends of the cooling fins (2) on the inner and outer sides of the body (1) are connected. 7. A switch cabinet with deformation monitoring and automatic control functions according to claim 6, characterized in that: the heat dissipation fin (2) is a heat pipe structure, and the heat dissipation fin (2) is provided with insulation inside. Thermal conductive layer, the insulating thermal conductive layer is preferably aluminum oxide. 8. A switch cabinet with deformation monitoring and automatic control functions according to claim 1, characterized in that: a control valve (501) is provided on the piston plate (5), and a control valve (501) is provided on the piston plate (5). There is a chamber (502) above, and the control valve (501) is used to control the communication state between the chamber (502) and the space below the piston plate (5).