A power distribution cabinet with fireproof and flame-retardant functions

Abstract

The application relates to the field of power distribution cabinets, and discloses a power distribution cabinet with a fireproof and flame-retardant function, which comprises a protection assembly, the protection assembly is installed at the upper end of a main body, the protection assembly is used for cooling the cabinet body and inhibiting internal and external fire sources, the protection assembly mainly comprises an executing mechanism composed of mounting blocks, a piston plate, glass balls, springs and sealing plugs, the glass balls are red, the triggering temperature is 68 DEG C, the power distribution cabinet with the fireproof and flame-retardant function has the protection assembly, the probability of fire source overflow or internal spread is reduced, the generation of toxic gas is reduced, the external fire source can be extinguished while preventing the external fire source from approaching the cabinet body, internal fire source spread to the outside can also be prevented, nitrogen can dilute internal oxygen and toxic gas, and external fire extinguishing agents can be used after the fire extinguishing agents in the cabinet body are consumed, the external fire extinguishing agents are introduced and secondary protection is carried out.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, specifically a power distribution cabinet with fireproof and flame-retardant functions. Background Technology

[0002] In patent application CN115548902A, a body, partition, mounting chamber, fire extinguishing mechanism, and flame-retardant mechanism are included. The partition is fixedly connected to the cabinet body, and the mounting chamber is formed between the partition and the bottom of the cabinet body. The fire extinguishing mechanism is fixedly connected to the mounting chamber and penetrates the partition. The flame-retardant mechanism is fixedly connected to the cabinet body. The flame-retardant mechanism includes a mounting plate, a fixing box, a perforated plate, a dry ice filler layer, and a heating tube. The mounting plate is fixedly connected to the upper interior of the cabinet body, the fixing box is fixedly connected to the mounting plate, the perforated plate connects to the fixing box, the dry ice filler layer is disposed within the fixing box, and the heating tube is disposed within the fixing box. The advantage is that when the heating tube is activated, the dry ice filler layer melts, producing carbon dioxide gas. The carbon dioxide gas enters the cabinet body through the perforated plate, reducing the oxygen content inside the cabinet. This prevents secondary ignition when external gas enters the cabinet body, thus achieving a flame-retardant effect.

[0003] In existing technologies, including the aforementioned patents, placing dry ice filler inside the cabinet can achieve cooling and flame retardant effects. However, due to the extremely low temperature of dry ice, condensation is prone to occur inside the cabinet during daily use. Secondly, additional cost is required to add dehumidification components to prevent condensation. Finally, additional electricity and equipment are needed to maintain the temperature of the dry ice during daily use. In summary, compared with the technical solutions adopted in the patents, the cost is high and it is easy to cause interference during normal use. In existing technologies, most solutions are designed to improve fire extinguishing methods and passive cooling / insulation. However, when used in the field, if the internal fire extinguishing methods fail to extinguish the internal fire source in one go, the fire may ignite the surrounding plants through the heat dissipation holes as it grows, thus causing a larger fire. Summary of the Invention

[0004] The problem this invention aims to solve is to provide low-cost protection against fire sources inside and outside the cabinet, thereby reducing the probability and speed at which an external fire occurs due to an internal fire source.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a power distribution cabinet with fireproof and flame-retardant function, including a protective component. The protective component is installed on the upper end of the main body and is used to cool the cabinet and suppress internal and external fire sources. The protective component mainly includes an actuator composed of a mounting block, a piston plate, a glass ball, a spring, and a sealing plug. The glass ball is red and has a trigger temperature of 68°C. Two piston plates are arranged inside the mounting block, and a glass ball is arranged between the piston plates. Springs are arranged around the glass ball. Sealing plugs are fixedly arranged on both sides of the piston plates. Heat dissipation components are arranged on the front and rear sides of the lower end of the main body. The heat dissipation components can prevent external combustibles from being ignited through the heat dissipation vents when encountering internal fire sources.

[0006] Preferably, the protective component includes a canopy, which is fixedly installed at the upper end of the main body and communicates with the interior of the main body. The interior of the canopy is divided into upper and lower parts, and the upper part of the canopy is a liquid storage tank.

[0007] Preferably, a sealing plate is provided at the upper end of the liquid storage tank, and several telescopic rods are fixedly installed inside the upper end of the sealing plate. The upper ends of the telescopic rods are fixedly connected to the ceiling. Joints are provided on both sides of the sealing plate, and the joints are connected to the liquid storage tank and can be connected to the external fire protection pipe network.

[0008] Preferably, the mounting block is installed inside the lower end of the ceiling, and several mounting blocks are provided. The arrangement of the mounting blocks is consistent with the shape of the main body. A sliding rod is fixedly provided inside the mounting block. There are four sliding rods in total, and the sliding rods are slidably connected to the piston plate.

[0009] Preferably, the mounting block is in a non-sealed state at one end of the glass ball, the piston plate is slidably connected to the mounting block, and a connecting pipe is fixedly provided at the upper end of the cavity between the piston plate and the mounting block. The outer connecting pipe is connected to the liquid storage tank above, and the cavity inside the mounting block is used to control the flow of gas and liquid respectively.

[0010] Preferably, the spring can pull the piston plate and the sealing plug together towards the middle after the glass ball breaks. The sealing plugs on both sides of the piston plate seal the holes on the front and rear sides of the mounting block, respectively. The lower end of the mounting block has a through hole through the roof, and a guide plate is provided at the outer end of the through hole.

[0011] Preferably, a number of gas cylinders are fixedly installed on the inner side of the mounting block at the lower end of the ceiling, and the gas cylinders are all connected to the connecting pipe at the upper end of the mounting block through pipelines.

[0012] Preferably, the liquid storage tank in the protective assembly is filled with dyed modified mineral oil, the connector above the liquid storage tank can also be used for filling and pressurizing, and the gas cylinder in the protective assembly is filled with nitrogen.

[0013] Preferably, the heat dissipation assembly includes a mounting plate, which is fixedly disposed on the front and rear sides of the main body. The surface of the mounting plate is provided with a plurality of heat dissipation holes, and a baffle is rotatably disposed behind the heat dissipation holes. The number of baffles is consistent with the number of rows of heat dissipation holes, and a single baffle can cover a row of heat dissipation holes.

[0014] Preferably, a support column is fixedly installed on both sides of the lower end of the baffle. The support column is arc-shaped and slidably connected to the mounting plate. A fixing block is fixedly installed at the end of the support column on the inner side of the mounting plate. The fixing block is made of low-melting-point flame-retardant plastic.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0016] (1) Under the action of the protective components, regardless of whether it is an internal or external fire source, the mineral oil inside can first cool down the cabinet through the actuator, reducing the probability and speed of fire source overflow or spread inward. Secondly, it can reduce the internal temperature of the distribution cabinet, reducing the probability of internal plastic parts and rubber outer skin melting and carbonization, thereby reducing the generation of toxic gases. Finally, it can form a partition around the cabinet, which can further prevent external fire sources from approaching the cabinet before it evaporates, and can also prevent internal fire sources from spreading to the outside too quickly. Nitrogen gas can first dilute the internal oxygen to extinguish the internal fire source through the actuator, and cooperate with the external mineral oil to reduce the probability of reignition due to the large amount of oxygen entering. Secondly, after toxic gases are generated inside the cabinet, it can dilute the toxic gases to avoid harming firefighters or workers. It is worth mentioning that after the mineral oil is consumed, the fire extinguishing agent in the fire pipe network can also provide secondary protection to the surface of the cabinet. After both the mineral oil and nitrogen gas are consumed, some fire extinguishing agent can also directly enter the cabinet to further prevent the internal fire source from expanding.

[0017] (2) By designing the heat dissipation components, the internal fire source can be prevented from directly overflowing and igniting external combustibles, thus improving the safety of the distribution cabinet whether it is used indoors or outdoors. This also prevents the fire from spreading further. Furthermore, when encountering an external fire source, it prevents burning combustibles from floating upwards through the heat dissipation holes and entering the device, thereby reducing the probability of an internal fire source arising from an external fire source. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 This is a partial cross-sectional view of the ceiling structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the canopy of the present invention;

[0021] Figure 4 This is a schematic diagram of the gas cylinder, mounting block, and related piping structure of the present invention;

[0022] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A;

[0023] Figure 6 This is a schematic diagram of the internal structure of the mounting block of the present invention;

[0024] Figure 7 This is a partial cross-sectional view of the mounting plate of the present invention;

[0025] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B.

[0026] In the diagram: 1. Main body; 2. Protective components; 201. Canopy; 202. Liquid storage tank; 203. Sealing plate; 204. Telescopic rod; 205. Connector; 206. Mounting block; 207. Sliding rod; 208. Piston plate; 209. Glass ball; 210. Spring; 211. Sealing plug; 212. Through hole; 213. Gas cylinder; 3. Heat dissipation components; 301. Mounting plate; 302. Heat dissipation hole; 303. Support column; 304. Fixing block; 305. Baffle. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0028] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0029] like Figures 1 to 8 As shown, the present invention provides a power distribution cabinet with fireproof and flame-retardant functions, including a protective component 2. The protective component 2 is installed on the upper end of the main body 1. The protective component 2 is used to cool the cabinet and suppress internal and external fire sources. The protective component 2 mainly includes an actuator composed of a mounting block 206, a piston plate 208, a glass ball 209, a spring 210, and a sealing plug 211. The glass ball 209 is red and has a trigger temperature of 68°C. The mounting block 206 has two piston plates 208 inside, and the glass ball 209 is arranged between the piston plates 208. The glass ball 209 is surrounded by springs 210. Sealing plugs 211 are fixedly arranged on both sides of the piston plates 208. Heat dissipation components 3 are arranged on the front and rear sides of the lower end of the main body 1. The heat dissipation components 3 can prevent external combustibles from being ignited through the heat dissipation vents when encountering internal fire sources.

[0030] The protective component 2 includes a canopy 201, which is fixedly installed at the upper end of the main body 1. The canopy 201 is connected to the interior of the main body 1. The interior of the canopy 201 is divided into upper and lower parts, and the upper part of the canopy 201 is a liquid storage tank 202.

[0031] A sealing plate 203 is provided at the upper end of the liquid storage tank 202. Several telescopic rods 204 are fixedly installed inside the upper end of the sealing plate 203. The upper ends of the telescopic rods 204 are fixedly connected to the ceiling 201. A connector 205 is provided on both sides of the sealing plate 203. The connector 205 is connected to the liquid storage tank 202 and can be connected to the external fire protection pipe network.

[0032] Mounting blocks 206 are installed inside the lower end of the ceiling 201. Several mounting blocks 206 are provided, and the arrangement of the mounting blocks 206 is consistent with the shape of the main body 1. Slide rods 207 are fixedly installed inside the mounting blocks 206. There are four slide rods 207 in total, and the slide rods 207 are slidably connected to the piston plate 208.

[0033] The mounting block 206 is located at one end of the glass ball 209 in a non-sealed state. The piston plate 208 is slidably connected to the mounting block 206. A connecting pipe is fixedly installed at the upper end of the cavity between the piston plate 208 and the mounting block 206. The outer connecting pipe is connected to the upper liquid storage tank 202. The cavities inside the mounting block 206 are used to control the flow of gas and liquid respectively.

[0034] After the glass ball 209 breaks, the spring 210 can pull the piston plate 208 together with the sealing plug 211 towards the middle. The sealing plugs 211 on both sides of the piston plate 208 seal the holes on the front and rear sides of the mounting block 206 respectively. The lower end of the mounting block 206 has a through hole 212 through the roof 201, and a guide plate is provided at the outer end of the through hole 212.

[0035] Several gas cylinders 213 are fixedly installed on the inner side of the mounting block 206, located at the lower end of the ceiling 201. All gas cylinders 213 are connected to the connecting pipe at the upper end of the mounting block 206 via pipelines.

[0036] The liquid storage tank 202 in the protective component 2 is filled with dyed modified mineral oil. The connector 205 above the liquid storage tank 202 can also be used for filling and pressurizing. The gas cylinder 213 in the protective component 2 is filled with nitrogen.

[0037] The heat dissipation component 3 includes a mounting plate 301, which is fixedly disposed on the front and rear sides of the main body 1. The surface of the mounting plate 301 is arrayed with a plurality of heat dissipation holes 302. A baffle 305 is rotatably disposed behind the heat dissipation holes 302. A plurality of baffles 305 are provided, the number of baffles 305 being consistent with the number of rows of heat dissipation holes 302. A single baffle 305 can cover a row of heat dissipation holes 302.

[0038] Both sides of the lower end of the baffle 305 are fixedly provided with support columns 303. The support columns 303 are arc-shaped and are slidably connected to the mounting plate 301. The end of the support column 303 is fixedly provided with a fixing block 304 on the inner side of the mounting plate 301. The fixing block 304 is made of low melting point flame retardant plastic.

[0039] The working principle and usage process of this invention: When a fire source appears in the area where the power distribution cabinet is located, the external fire source can directly trigger the glass ball 209 through the through hole 212. If it is an internal fire source, the high temperature gas moves upward under the drive of the cooling fan and triggers the glass ball 209 when it passes through it.

[0040] When the glass ball 209 is triggered, the piston plate 208 moves towards the middle under the pressure of the spring 210 and both sides. At this time, the pressure on both sides of the piston plate 208 is basically the same, and it is in the non-sealed area of ​​the mounting block 206. When the piston plate 208 moves, it can also drive the sealing plug 211 to move. At this time, the oil above and the gas in the gas cylinder 213 can be sprayed out to the outside of the distribution cabinet through the mounting block 206 and enter the inside of the distribution cabinet through the ceiling 201.

[0041] The oil on the cabinet can first serve as a warning, allowing workers to immediately identify the faulty distribution cabinet. Secondly, the oil can be used to cool the surface of the cabinet, preventing it from losing its support due to high temperature. When it flows to the ground, it can extinguish the fire around the cabinet and prevent external fire sources from directly contacting the cabinet before it evaporates. When the fire source is inside, it can also have the same effect and prevent the fire from spreading further through the oil on the ground.

[0042] The nitrogen gas entering the cabinet can first extinguish the internal fire source, and work with the oil on the cabinet to prevent reignition caused by a large amount of oxygen entering when the cabinet is opened. Secondly, it can dilute the toxic gases produced by plastic and rubber.

[0043] It is worth mentioning that when the modified mineral oil in the storage tank 202 is exhausted, the sealing plate 203 is fully opened. If the distribution cabinet is located in the field or outdoors, external rainwater can be introduced and allowed to flow to the cabinet through the mounting block 206. If it is located indoors, the fire extinguishing agent in the fire pipeline can be used directly to cover the surface of the cabinet to further prevent the fire from spreading.

[0044] When a fire occurs, the fixing block 304 will melt under high temperature. After it melts, it can no longer support the baffle 305. At this time, the baffle 305 rotates downward and blocks the heat dissipation hole 302. This can prevent the internal fire source from spreading to the outside and also prevent the external fire source from directly igniting the internal components.

[0045] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A power distribution cabinet with fireproof and flame-retardant function, comprising a protective component (2), characterized in that: The protective component (2) is installed on the upper end of the main body (1). The protective component (2) is used to cool the cabinet and suppress internal and external fire sources. The protective component (2) includes an actuator consisting of a mounting block (206), a piston plate (208), a glass ball (209), a spring (210), and a sealing plug (211). The glass ball (209) is red and has a trigger temperature of 68°C. The mounting block (206) has two piston plates (208) inside. The glass ball (209) is placed between the piston plates (208). The glass ball (209) is surrounded by a spring (210). The sealing plug (211) is fixedly placed on both sides of the piston plate (208). The lower end of the main body (1) is provided with heat dissipation components (3) on both the front and rear sides. The heat dissipation components (3) can prevent external combustibles from being ignited through the heat dissipation vent when encountering internal fire sources. The protective component (2) includes a canopy (201), which is fixedly installed at the upper end of the main body (1). The canopy (201) is connected to the interior of the main body (1). The interior of the canopy (201) is divided into upper and lower parts, and the upper part of the canopy (201) is a liquid storage tank (202). The mounting block (206) is located at one end of the glass ball (209) in a non-sealed state. The piston plate (208) is slidably connected to the mounting block (206). A connecting pipe is fixedly installed at the upper end of the cavity between the piston plate (208) and the mounting block (206). The outer connecting pipe is connected to the liquid storage tank (202) above. The cavities in the mounting block (206) are used to control the flow of gas and liquid respectively.

2. A distribution cabinet with fireproof and flame-retardant function according to claim 1, characterized in that: The upper end of the liquid storage tank (202) is provided with a sealing plate (203). Several telescopic rods (204) are fixedly installed inside the upper end of the sealing plate (203). The upper end of the telescopic rods (204) is fixedly connected to the ceiling (201). Both sides of the sealing plate (203) are provided with joints (205). The joints (205) are connected to the liquid storage tank (202) and can be connected to the external fire protection pipe network.

3. A distribution cabinet with fireproof and flame-retardant function according to claim 1, characterized in that: The mounting block (206) is installed inside the lower end of the ceiling (201). There are several mounting blocks (206). The arrangement of the mounting blocks (206) is consistent with the shape of the main body (1). A sliding rod (207) is fixedly installed inside the mounting block (206). There are four sliding rods (207). The sliding rods (207) are slidably connected to the piston plate (208).

4. A distribution cabinet with fireproof and flame-retardant function according to claim 1, characterized in that: After the glass ball (209) breaks, the spring (210) can pull the piston plate (208) together with the sealing plug (211) towards the middle; the sealing plugs (211) on both sides of the piston plate (208) seal the holes on the front and rear sides of the mounting block (206) respectively; the lower end of the mounting block (206) is provided with a through hole (212) through the roof (201), and a guide plate is provided at the outer end of the through hole (212).

5. A distribution cabinet with fireproof and flame-retardant function according to claim 1, characterized in that: Several gas cylinders (213) are fixedly installed on the inner side of the mounting block (206) at the lower end of the ceiling (201). All gas cylinders (213) are connected to the connecting pipe at the upper end of the mounting block (206) through pipelines.

6. A distribution cabinet with fireproof and flame-retardant function according to claim 5, characterized in that: The liquid storage tank (202) in the protective assembly (2) is filled with dyed modified mineral oil. The connector (205) above the liquid storage tank (202) can also be used for filling and pressurizing. The gas cylinder (213) in the protective assembly (2) is filled with nitrogen.

7. A distribution cabinet with fireproof and flame-retardant function according to claim 1, characterized in that: The heat dissipation component (3) includes a mounting plate (301), which is fixedly disposed on the front and rear sides of the main body (1). The surface of the mounting plate (301) is provided with a plurality of heat dissipation holes (302). A baffle (305) is rotatably disposed behind the heat dissipation holes (302). A plurality of baffles (305) are provided, and the number of baffles (305) is consistent with the number of rows of heat dissipation holes (302). A single baffle (305) can cover a row of heat dissipation holes (302).

8. A distribution cabinet with fireproof and flame-retardant function according to claim 7, characterized in that: Both sides of the lower end of the baffle (305) are fixedly provided with support columns (303). The support columns (303) are arc-shaped and are slidably connected to the mounting plate (301). The end of the support column (303) is fixedly provided with a fixing block (304) on the inner side of the mounting plate (301). The fixing block (304) is made of low melting point flame retardant plastic.

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