A fireproof device for switchgear

Abstract

This utility model relates to a fire-fighting device for switchgear, belonging to the field of switchgear technology. It includes a cabinet, a carbon dioxide fire extinguishing assembly, a heat dissipation vent sealing assembly, and an aerosol fire extinguishing assembly. A horizontal support plate is installed at the top inside the cabinet, and multiple nozzles are mounted on the horizontal support plate. The carbon dioxide fire extinguishing assembly is located at the bottom inside the cabinet and is connected to the multiple nozzles via pipes. The aerosol fire extinguishing assembly is installed at the bottom of the horizontal support plate. Heat dissipation vents are provided on one side wall of the cabinet, and heat dissipation vent sealing assemblies are installed at the locations of these vents. This utility model utilizes the carbon dioxide fire extinguishing assembly to extinguish the fire with carbon dioxide, the aerosol fire extinguishing assembly to extinguish the fire with aerosol extinguishing agent, and the heat dissipation vent sealing assembly to seal the vents when a fire breaks out inside the cabinet. Through the combined action of the carbon dioxide fire extinguishing assembly, the heat dissipation vent sealing assembly, and the aerosol fire extinguishing assembly, fire can be extinguished promptly, reducing the time required to extinguish the fire.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinet technology, specifically a fireproof device for switch cabinets. Background Technology

[0002] When existing switchgear is used for extended periods, the high internal temperatures inevitably pose a risk of internal fire. Currently, the method for extinguishing fires inside switchgear typically relies on a single temperature sensor to detect the internal temperature and then activate a fire extinguisher. However, due to the large internal space of switchgear, fire extinguishers cannot reach the precise location of the fire in a timely manner. Furthermore, the ventilation holes on the switchgear create internal airflow, which can provide oxygen to the fire, thus prolonging the time required to extinguish it. Utility Model Content

[0003] The purpose of this utility model is to design a fire prevention device for switch cabinets. It can extinguish fires with carbon dioxide through a carbon dioxide extinguishing component, extinguish fires with aerosol through an aerosol extinguishing component, and seal the heat dissipation holes when a fire starts inside the cabinet through a heat dissipation hole sealing component. Through the combined action of the carbon dioxide extinguishing component, the heat dissipation hole sealing component, and the aerosol extinguishing component, fires can be extinguished in a timely manner, reducing the time to extinguish the fire.

[0004] To achieve the above objectives, this utility model provides a fireproof device for switch cabinets, comprising: a cabinet body, a carbon dioxide fire extinguishing assembly, a heat dissipation hole sealing assembly, and an aerosol fire extinguishing assembly; a horizontal support plate is installed at the top inside the cabinet body, and multiple nozzles are installed on the horizontal support plate; the carbon dioxide fire extinguishing assembly is located at the bottom inside the cabinet body and is connected to the multiple nozzles through pipelines; the aerosol fire extinguishing assembly is installed at the bottom of the horizontal support plate; heat dissipation holes are provided on one side wall of the cabinet body, and heat dissipation hole sealing assemblies are installed at the locations of the heat dissipation holes.

[0005] Furthermore, the carbon dioxide fire extinguishing assembly includes a liquid carbon dioxide storage bottle and a clamping unit. A cavity is provided at the bottom corner of the cabinet, and a door panel is hinged to the outside of the cavity. Part of the clamping unit is installed on the inner wall of the cavity, and another part is installed on the door panel for clamping the liquid carbon dioxide storage bottle. A solenoid valve is installed at the mouth of the liquid carbon dioxide storage bottle.

[0006] Furthermore, the clamping unit includes a first arc-shaped clamping plate and a second arc-shaped clamping plate. The first arc-shaped clamping plate is connected to the inner wall of the cavity by a spring, and the second arc-shaped clamping plate is connected to the door panel by a spring.

[0007] Furthermore, the pipes located above the horizontal support plate and connected to the nozzles are arranged in a U-shape.

[0008] Furthermore, the aerosol fire extinguishing assembly includes a shell, a vacuum-sealed bag, and an aerosol fire extinguishing agent. The vacuum-sealed bag is flat, and the aerosol fire extinguishing agent is evenly spread inside the vacuum-sealed bag. The vacuum-sealed bag is located inside the shell, and the shell has multiple explosion relief holes.

[0009] Furthermore, the aerosol fire extinguishing assembly also includes a heat-sensitive wire, one end of which is encapsulated in a vacuum-sealed bag and in contact with the aerosol fire extinguishing agent, and the other end of which extends out of the vacuum-sealed bag.

[0010] Furthermore, a first support mesh and a second support mesh are installed on both sides inside the shell, and the vacuum-sealed bag is held between the first support mesh and the second support mesh.

[0011] Furthermore, the heat dissipation hole sealing assembly includes a fixing plate, a first hydraulic cylinder, a first baffle, a second hydraulic cylinder, and a second baffle. The fixing plate is connected to the inner wall of the cabinet. The fixed end of the first hydraulic cylinder is connected to the fixing plate, and the output end is connected to the first baffle. The fixed end of the second hydraulic cylinder is connected to the fixing plate, and the output end is connected to the second baffle. Sealing gaskets are adhered to both the first baffle and the second baffle.

[0012] Furthermore, a controller is installed on the top of the transverse support plate, and a smoke sensor and a temperature sensor are installed on the bottom of the transverse support plate. The smoke sensor, the temperature sensor, the first hydraulic cylinder, the second hydraulic cylinder, and the solenoid valve are all electrically connected to the controller.

[0013] Furthermore, an air inlet pipe is connected to the side wall of the cabinet away from the heat dissipation holes. An electric valve and an air intake fan are installed on the air inlet pipe from the outside to the inside. The electric valve is electrically connected to the controller.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a fire prevention device for switch cabinets. It can extinguish fires with carbon dioxide through a carbon dioxide extinguishing component, extinguish fires with aerosol extinguishing component, and seal the heat dissipation holes when a fire starts inside the cabinet through a heat dissipation hole sealing component. Through the combined action of the carbon dioxide extinguishing component, the heat dissipation hole sealing component, and the aerosol extinguishing component, fires can be extinguished in a timely manner, reducing the time to extinguish the fire. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the carbon dioxide fire extinguishing assembly of this utility model; Figure 3 This is a schematic diagram of the structure of the heat dissipation hole sealing assembly of this utility model; Figure 4This is a schematic diagram of the structure of the aerosol fire extinguishing component of this utility model.

[0016] In the diagram: 1-Cabinet; 2-Carbon dioxide fire extinguishing assembly; 21-Liquid carbon dioxide storage bottle; 22-Clamping unit; 221-First arc-shaped clamping plate; 222-Second arc-shaped clamping plate; 223-Spring; 23-Door panel; 24-Solenoid valve; 3-Heat dissipation hole sealing assembly; 31-Fixing plate; 32-First hydraulic cylinder; 33-First baffle; 34-Second hydraulic cylinder; 35-Second baffle; 4-Aerosol fire extinguishing assembly; 41-Shell; 42-Vacuum sealing bag; 43-Aerosol fire extinguishing agent; 44-Explosion relief hole; 45-First support net; 46-Second support net; 5-Horizontal support plate; 6-Nozzle; 7-Heat dissipation hole; 8-Air inlet pipe; 9-Air inlet fan. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] See Figure 1 This embodiment discloses a fireproof device for a switch cabinet, including: a cabinet body 1, a carbon dioxide fire extinguishing assembly 2, a heat dissipation hole sealing assembly 3, and an aerosol fire extinguishing assembly 4; a horizontal support plate 5 is installed at the top inside the cabinet body 1, and multiple nozzles 6 are installed on the horizontal support plate 5; the carbon dioxide fire extinguishing assembly 4 is located at the bottom inside the cabinet body 1 and is connected to the multiple nozzles 6 through pipelines; the aerosol fire extinguishing assembly 2 is installed at the bottom of the horizontal support plate 5; a heat dissipation hole 7 is opened on one side wall of the cabinet body 1, and a heat dissipation hole sealing assembly 3 is installed at the location of the heat dissipation hole 7.

[0023] Figure 2 The carbon dioxide fire extinguishing assembly 2 includes a liquid carbon dioxide storage bottle 21 and a clamping unit 22. A cavity is located at the bottom corner of the cabinet 1, and a door panel 23 is hinged to the outside of the cavity. Part of the clamping unit 22 is installed on the inner wall of the cavity, and another part is installed on the door panel 23, used to clamp the liquid carbon dioxide storage bottle 21. A solenoid valve 24 is installed at the mouth of the liquid carbon dioxide storage bottle 21. In use, when a fire breaks out in a certain part of the cabinet 1, the smoke sensor detects the smoke. The smoke sensor then converts the smoke signal into an electrical signal and transmits it to the controller. The controller controls the solenoid valve 24 to open, and the carbon dioxide in the liquid carbon dioxide storage bottle 21 is sprayed out through the nozzle 6 via a pipe, rapidly spraying a large amount of carbon dioxide onto the fire switch for fire extinguishing, resulting in high fire extinguishing efficiency.

[0024] The clamping unit 22 includes a first arc-shaped clamping plate 221 and a second arc-shaped clamping plate 222. The first arc-shaped clamping plate 221 is connected to the inner wall of the cavity by a spring 223, and the second arc-shaped clamping plate 222 is connected to the door panel 23 by a spring 223. Opening the door panel 23 allows for the replacement of the used or damaged liquid carbon dioxide storage bottle 21, reducing safety hazards and providing a simple and convenient operation.

[0025] The technical solution has been further optimized. The pipeline located above the horizontal support plate 5 and connected to the nozzle 6 is arranged in a U-shape. The installation position and number of nozzles 6 can be adjusted as needed to ensure the fire extinguishing range.

[0026] Figure 4 The aerosol fire extinguishing assembly 4 includes a housing 41, a vacuum-sealed bag 42, and an aerosol fire extinguishing agent 43. The vacuum-sealed bag 42 is flat, and the aerosol fire extinguishing agent 43 is evenly spread inside the vacuum-sealed bag 42. The vacuum-sealed bag 42 is disposed inside the housing 41, and the housing 41 has multiple explosion vents 44. The vacuum-sealed bag 42 is made of combustible material, which does not hinder the combustion of the aerosol fire extinguishing agent 43 inside the vacuum-sealed bag 42, and allows the aerosol fire extinguishing agent 43 to be ejected from the explosion vents 44 on the housing 41 after combustion. When the aerosol fire extinguishing agent 43 is ignited, the fire can instantly burn through the vacuum-sealed bag 42, breaking the vacuum state of the internal cavity of the vacuum-sealed bag 42. The compressed aerosol fire extinguishing agent 43 inside can instantly loosen and come into contact with air and burn rapidly.

[0027] To further optimize the technical solution, the aerosol fire extinguishing component 4 also includes a heat-sensitive wire. One end of the heat-sensitive wire is encapsulated in a vacuum-sealed bag 42 and in contact with the aerosol fire extinguishing agent 43, while the other end extends out of the vacuum-sealed bag 42. When a fire occurs outside the vacuum-sealed bag 42 and the temperature rises, the heat-sensitive wire spontaneously combusts and ignites the aerosol fire extinguishing agent in contact with it. This activates the aerosol fire extinguishing agent 43 to extinguish the fire. The combustion of the aerosol fire extinguishing agent consumes a relatively large amount of oxygen, thus also having a certain impact on the ignition point inside the cabinet.

[0028] To further optimize the technical solution, a first support net 45 and a second support net 46 are installed on both sides inside the housing 41, with the vacuum-sealed bag 42 sandwiched between the first support net 45 and the second support net 46. Even if the vacuum-sealed bag 42 leaks vacuum, the aerosol extinguishing component 4 remains flattened and limited by the first support net 45 and the second support net 46, ensuring a large contact area between the aerosol extinguishing agent 43 and the air, thus guaranteeing the activation effect of the aerosol extinguishing agent 43. The arrangement of the first support net 45 and the second support net 46 not only secures the vacuum-sealed bag 42 but also ensures that the aerosol extinguishing agent 43 quickly contacts the air through the mesh openings on the first support net 45 and the second support net 46, allowing it to burn without affecting the normal activation of the aerosol extinguishing agent 43.

[0029] Figure 3The heat dissipation hole sealing assembly 3 includes a fixed plate 31, a first hydraulic cylinder 32, a first baffle 33, a second hydraulic cylinder 34, and a second baffle 35. The fixed plate 31 is connected to the inner wall of the cabinet 1. The fixed end of the first hydraulic cylinder 32 is connected to the fixed plate 31, and its output end is connected to the first baffle 33. The fixed end of the second hydraulic cylinder 34 is connected to the fixed plate 31, and its output end is connected to the second baffle 35. Sealing gaskets are adhered to both the first baffle 33 and the second baffle 35. During fire extinguishing, the first hydraulic cylinder 32 and the second hydraulic cylinder 34 drive the first baffle 33 and the second baffle 35 to move, covering the heat dissipation holes with the sealing gaskets, thus closing the holes and isolating them from air. This allows the assembly to work with the carbon dioxide fire extinguishing system to quickly extinguish the fire and reduce damage to the cabinet.

[0030] To further optimize the technical solution, a controller is installed on the top of the transverse support plate 5, and a smoke sensor and a temperature sensor are installed on the bottom of the transverse support plate. The smoke sensor, temperature sensor, first hydraulic cylinder, second hydraulic cylinder, and solenoid valve are all electrically connected to the controller.

[0031] To further optimize the technical solution, an air inlet pipe 8 is connected to the side wall of the cabinet 4 away from the heat dissipation hole 7. An electric valve and an intake fan 9 are installed sequentially from the outside to the inside of the air inlet pipe 8. The electric valve is electrically connected to the controller. The intake fan 9 increases the exhaust and heat dissipation effect, thereby reducing the probability of fire. During fire suppression, the controller closes the electric valve.

[0032] This utility model provides a fire prevention device for switch cabinets. It can extinguish fires with carbon dioxide through a carbon dioxide extinguishing component, extinguish fires with aerosol extinguishing component, and seal the heat dissipation holes when a fire starts inside the cabinet through a heat dissipation hole sealing component. Through the combined action of the carbon dioxide extinguishing component, the heat dissipation hole sealing component, and the aerosol extinguishing component, fires can be extinguished in a timely manner, reducing the time to extinguish the fire.

[0033] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A fireproof device for switchgear, characterized in that, include: The cabinet comprises a carbon dioxide fire extinguishing assembly, a heat dissipation vent sealing assembly, and an aerosol fire extinguishing assembly. A horizontal support plate is installed at the top inside the cabinet, and multiple nozzles are mounted on the horizontal support plate. The carbon dioxide fire extinguishing assembly is located at the bottom inside the cabinet and is connected to the multiple nozzles via pipes. The aerosol fire extinguishing assembly is installed at the bottom of the horizontal support plate. Heat dissipation vents are provided on one side wall of the cabinet, and heat dissipation vent sealing assemblies are installed at the locations of these vents.

2. A fireproof device for switchgear as described in claim 1, characterized in that, The carbon dioxide fire extinguishing assembly includes a liquid carbon dioxide storage bottle and a clamping unit. A cavity is provided at the bottom corner of the cabinet, and a door panel is hinged to the outside of the cavity. Part of the clamping unit is installed on the inner wall of the cavity, and another part is installed on the door panel for clamping the liquid carbon dioxide storage bottle. A solenoid valve is installed at the mouth of the liquid carbon dioxide storage bottle.

3. A fireproof device for switchgear as described in claim 2, characterized in that, The clamping unit includes a first arc-shaped clamping plate and a second arc-shaped clamping plate. The first arc-shaped clamping plate is connected to the inner wall of the cavity by a spring, and the second arc-shaped clamping plate is connected to the door panel by a spring.

4. A fireproof device for switchgear as described in claim 3, characterized in that, The piping located above the horizontal support plate and connected to the nozzle is arranged in a U-shape.

5. A fireproof device for switchgear as described in claim 1, characterized in that, The aerosol fire extinguishing assembly includes a shell, a vacuum-sealed bag, and an aerosol fire extinguishing agent. The vacuum-sealed bag is flat, and the aerosol fire extinguishing agent is evenly spread inside the vacuum-sealed bag. The vacuum-sealed bag is located inside the shell, and the shell has multiple explosion relief holes.

6. A fireproof device for switchgear as described in claim 5, characterized in that, The aerosol fire extinguishing assembly also includes a heat-sensitive wire, one end of which is encapsulated in a vacuum-sealed bag and in contact with the aerosol fire extinguishing agent, and the other end of which extends out of the vacuum-sealed bag.

7. A fireproof device for switchgear as described in claim 6, characterized in that, The shell has a first support mesh and a second support mesh installed on both sides inside, and the vacuum-sealed bag is held between the first support mesh and the second support mesh.

8. A fireproof device for switchgear as described in claim 2, characterized in that, The heat dissipation hole sealing assembly includes a fixed plate, a first hydraulic cylinder, a first baffle, a second hydraulic cylinder, and a second baffle. The fixed plate is connected to the inner wall of the cabinet. The fixed end of the first hydraulic cylinder is connected to the fixed plate, and the output end is connected to the first baffle. The fixed end of the second hydraulic cylinder is connected to the fixed plate, and the output end is connected to the second baffle. Sealing gaskets are adhered to both the first baffle and the second baffle.

9. A fireproof device for switchgear as described in claim 8, characterized in that, A controller is installed on the top of the transverse support plate, and a smoke sensor and a temperature sensor are installed on the bottom of the transverse support plate. The smoke sensor, temperature sensor, first hydraulic cylinder, second hydraulic cylinder, and solenoid valve are all electrically connected to the controller.

10. A fireproof device for switchgear as described in claim 9, characterized in that, An air inlet pipe is connected to the side wall of the cabinet away from the heat dissipation holes. An electric valve and an air intake fan are installed on the air inlet pipe from the outside to the inside. The electric valve is electrically connected to the controller.

Images