Electric control cabinet with fireproof function

Abstract

The invention discloses an electric control cabinet with a fireproof function, and relates to the technical field of electric control cabinets, the electric control cabinet comprises a cabinet body, a plurality of mounting cavities are arranged in the cabinet body along the height direction, a module mounting plate is arranged in each mounting cavity, an air supply cavity is arranged on one side of the plurality of mounting cavities in the cabinet body, and a storage cavity is arranged at the bottom of the cabinet body. A plurality of air inlets communicated with the air supply cavity are formed in one side of the mounting cavity, a plurality of air outlets communicated with the exterior of the cabinet body are formed in the other side of the mounting cavity, and a pair of baffles is arranged in the mounting cavity and located on the inner sides of the air inlets and the air outlets in a sliding mode; according to the invention, the cabinet body is divided into a plurality of mounting cavities to reduce the volume of each mounting cavity, so that the cavities can be quickly filled with fire extinguishing gas, the influence of fire on all power distribution modules in the cabinet body can be avoided when the fire occurs, and the gas inlet and the gas outlet can be blocked through the baffle plate, so that the power distribution cabinet is convenient to use. And external air containing oxygen is prevented from entering the mounting cavity where a fire occurs.

Description

Technical Field

[0001] The present invention relates to the technical field of electric control cabinets, in particular to an electric control cabinet with a fire prevention function. Background Art

[0002] The electric control cabinet is a control cabinet that assembles power distribution modules in a closed or semi-closed metal cabinet according to electrical wiring requirements. Its layout should meet the requirements for normal operation of the power system, be easy to repair, and not endanger the safety of people and surrounding equipment. A large number of power distribution modules are installed inside the power distribution cabinet. When the modules are aged or short-circuited, fire is likely to occur. For example, the invention patent with publication number CN112398012B discloses a self-triggering fireproof switchgear. To address the problem that existing low-voltage switchgear has poor fireproof performance and lacks an autonomous fire extinguishing function, resulting in poor safety, the following solution is proposed. The switchgear comprises a switchgear body and a carbon dioxide storage tank. A mounting hole is defined on one side of the top of the switchgear body, in which a heating cylinder is fixedly mounted. A box is fixedly mounted on top of the heating cylinder. The carbon dioxide storage tank is fixedly mounted on the top of the switchgear body, and the gas outlet of the carbon dioxide storage tank is connected to one end of an outlet pipe. However, the cavity in the existing electric control cabinet is large in volume. When a fire occurs, it takes a certain amount of time for the fire extinguishing gas to fill the cavity, which reduces the fire extinguishing speed. In addition, when a fire occurs, the response speed of the fire extinguishing component is slow, and the use effect is poor. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention provides an electric control cabinet with fire protection function, which solves the technical problem that the existing device has a poor fire extinguishing speed when a fire occurs.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an electric control cabinet with fire protection function, comprising a cabinet body, wherein a plurality of installation cavities are provided in the cabinet body along the height direction, each of the installation cavities is provided with a module installation plate, an air supply cavity is provided in the cabinet body on one side of the plurality of installation cavities, and a storage cavity is provided at the bottom of the cabinet body; One side of the installation cavity is provided with a plurality of air inlets connected to the air supply cavity, and the other side of the installation cavity is provided with a plurality of exhaust ports connected to the outside of the cabinet. A pair of baffles are slidably provided in the installation cavity and on the inner sides of the air inlets and exhaust ports. Openings corresponding to the plurality of exhaust ports and the plurality of air inlets are provided on the baffles. A fixing frame is provided at the top of the installation cavity, and a pair of latches are slidably provided at both ends of the fixing frame. Sockets matching the latches are provided on the baffles. A heat-sensitive shrink assembly is connected between the pair of latches. When a fire occurs, the heat-sensitive shrink assembly will be triggered, and the pair of latches will move inward. When the pair of latches are inserted into the sockets in the pair of baffles, the openings correspond to the exhaust ports or the air inlets. A valve is fixedly provided on one side of the air inlet in the installation cavity, the switch of the valve is connected to a baffle for blocking the air inlet, the air outlet end of the valve is connected to an injection pipe, a fire extinguishing gas cylinder is provided in the storage cavity, the fire extinguishing gas cylinder is connected to an air supply pipe, the air supply pipe extends to one side of multiple installation cavities, the air inlet end of each valve in the installation cavity is connected to the air supply pipe through a branch pipe, when the baffle is lowered, the valve is opened, and the high-pressure gas in the fire extinguishing gas cylinder enters the valve through the air supply pipe and the branch pipe, and is finally sprayed into the installation cavity by the injection pipe.

[0005] Preferably, the heat-sensitive shrink assembly includes a plurality of support rods and a plurality of heat-sensitive push rods. A pair of springs for pushing a pair of the pins to move inward are provided in the fixing frame. The plurality of support rods are slidably installed in the fixing frame. The inner ends of a pair of the pins and both ends of the support rods are fixed with clamping plates, and the heat-sensitive push rod is provided between two adjacent clamping plates.

[0006] Preferably, the plurality of thermal-sensitive ejector rods are respectively arranged above the plurality of power distribution modules installed on the module mounting plate.

[0007] Preferably, a groove is provided on the side wall of the clamping plate, and the end of the thermal ejector rod is inserted into the groove.

[0008] Preferably, a second spring is installed above the baffle, and the second spring abuts against the upper wall of the installation cavity.

[0009] Preferably, a one-way exhaust valve communicating with the outside is provided on the top of the installation cavity near the exhaust port.

[0010] Preferably, an air intake fan is installed at the bottom of the air supply cavity, and a filter plate is installed on the outer side of the air intake end of the air intake fan.

[0011] Preferably, the valve is provided with an air cavity 1 connected to the branch pipe and an air cavity 2 connected to the air injection pipe, the air cavity 1 and the air cavity 2 are connected through a valve seat, a push rod is slidably arranged in the valve, a valve core for sealing the valve seat is fixedly installed at one end of the push rod, and the other end of the push rod abuts against the baffle for sealing the air inlet.

[0012] Preferably, the cabinet body is provided with an inspection opening on the front side of each installation cavity, and each inspection opening is hingedly connected to a cabinet door, and a sealing strip is provided at the edge of the cabinet door.

[0013] Beneficial effects The present invention provides an electric control cabinet with a fire prevention function, which has the following beneficial effects: by dividing the cabinet into multiple installation cavities, the volume of each installation cavity is reduced, which facilitates the rapid filling of the cavity with fire extinguishing gas, and at the same time, when a fire occurs, the fire is prevented from affecting all distribution modules in the cabinet; by filling the installation cavity with fire extinguishing gas, the distribution module is prevented from contacting with oxygen, thereby achieving fire extinguishing of the distribution module; the air inlet and exhaust port can be blocked by a baffle to prevent external air containing oxygen from entering the installation cavity where the fire occurs; the one-way exhaust valve can be used to facilitate the discharge of air in the installation cavity when the fire extinguishing gas enters the installation cavity, thereby creating favorable conditions for fire extinguishing; by arranging a thermal push rod above each distribution module, the response speed when a fire occurs can be improved; when any thermal push rod is deformed by heat, the fire extinguishing gas can be started to be filled into the installation cavity where it is located, thereby achieving rapid fire extinguishing; no electric control is required when triggering the fire extinguishing program; when a fire occurs, the mechanical structure design can be used to extinguish the fire gas while preventing external oxygen from entering the installation cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A perspective view of the present invention; Figure 2 A three-dimensional diagram of the internal structure of the present invention; Figure 3 It is a three-dimensional diagram of the cabinet; Figure 4 The three-dimensional picture after the cabinet door is opened Figure 1 ; Figure 5 The three-dimensional picture after the cabinet door is opened Figure 1 ; Figure 6 for Figure 4 A partial enlarged view of middle A; Figure 7 for Figure 5 A partial enlarged view of B in the middle; Figure 8 is a perspective view of a heat-sensitive shrink assembly; Figure 9 is a three-dimensional diagram of the baffle; Figure 10 This is a diagram of the internal structure of the valve.

[0015] In the figure: 1. Cabinet body; 2. Installation cavity; 3. Air supply cavity; 4. Storage cavity; 5. Module mounting plate; 6. Air inlet; 7. Exhaust port; 8. Baffle; 9. Opening; 10. Fixing frame; 11. Latch; 12. Socket; 13. Spring 1; 14. Valve; 15. Jet pipe; 16. Spring 2; 17. Support rod; 18. Clamping plate; 19. Thermal push rod; 20. Push rod; 21. Air cavity 1; 22. Air cavity 2; 23. Valve seat; 24. Valve core; 25. Air intake fan; 26. Fire extinguisher cylinder; 27. Air supply pipe; 28. Branch pipe; 29. ​​Cabinet door; 30. One-way exhaust valve; 31. Filter plate; 32. Inspection port. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0017] See also Figures 1-10 The present invention provides a technical solution: an electric control cabinet with a fireproof function, comprising a cabinet body 1, wherein a plurality of installation cavities 2 are provided in the cabinet body 1 along the height direction, and a module mounting plate 5 for mounting a power distribution module is provided in each installation cavity 2. By providing a plurality of installation cavities 2, the size of the cavity where the electric control module is located is reduced, so that the fire extinguishing gas can quickly fill the cavity and prevent the fire from affecting all the power distribution modules in the cabinet body 1 when a fire occurs. An air supply cavity 3 is provided on one side of the plurality of installation cavities 2 in the cabinet body 1, and a storage cavity 4 is provided at the bottom of the cabinet body 1; One side of the installation cavity 2 is provided with multiple air inlets 6 connected to the air supply cavity 3, and the other side of the installation cavity 2 is provided with multiple exhaust ports 7 connected to the outside of the cabinet 1 to provide heat dissipation conditions for the power distribution module. A pair of baffles 8 are slidably provided in the installation cavity 2 and on the inner side of the air inlet 6 and the exhaust port 7. The baffle 8 is provided with openings 9 corresponding to the multiple exhaust ports 7 and the multiple air inlet 6. A fixing frame 10 is provided on the top of the installation cavity 2, and a pair of latches 11 are slidably provided at both ends of the fixing frame 10. A socket 12 matching the latch 11 is provided on the baffle 8. A heat-sensitive shrink component is connected between the pair of latches 11, which will trigger the heat-sensitive shrink when a fire occurs. Components, at this time, the pair of latches 11 move inwardly, and when the latches 11 are pulled out from the insertion holes 12, the baffle 8 drops, and the multiple exhaust ports 7 or the multiple air inlets 6 are blocked by the baffle 8, preventing external air with oxygen from entering the installation cavity 2, creating favorable conditions for fire extinguishing. When the pair of latches 11 are inserted into the insertion holes 12 in the pair of baffles 8, the openings 9 correspond to the exhaust ports 7 or the air inlets 6, ensuring that the cooling gas can enter or discharge the installation cavity 2. When the latches 11 are pulled out from the insertion holes 12, the baffle 8 drops, and the multiple exhaust ports 7 or the multiple air inlets 6 are blocked by the baffle 8, preventing external air with oxygen from entering the installation cavity 2, creating favorable conditions for fire extinguishing. A valve 14 is fixedly provided on one side of the air inlet 6 in the installation cavity 2. The switch of the valve 14 is connected to the baffle 8 for blocking the air inlet 6, so as to realize the linkage between the switch of the baffle 8 and the valve 14. There is no need to add a valve 14 switch control system. The air outlet end of the valve 14 is connected to the jet pipe 15. A fire extinguishing gas cylinder 26 is provided in the storage cavity 4. The fire extinguishing medium in the fire extinguishing gas cylinder 26 is carbon dioxide. The fire extinguishing gas cylinder 26 is connected to the gas supply pipe 27. The gas supply pipe 27 extends to one side of multiple installation cavities 2. The air inlet end of the valve 14 in each installation cavity 2 is connected to the gas supply pipe 27 through a branch pipe 28. When the baffle 8 in the installation cavity 2 is lowered, the valve 14 is opened, and the high-pressure gas in the fire extinguishing gas cylinder 26 enters the valve 14 through the gas supply pipe 27 and the branch pipe 28, and is finally sprayed into the installation cavity 2 by the jet pipe 15.

[0018] See also Figure 2 、 Figure 8 As an embodiment of the present invention, the thermal shrinkage assembly includes a plurality of support rods 17 and a plurality of thermal push rods 19. The thermal push rods 19 are made of fusible alloy. A pair of springs 13 are provided in the fixing frame 10 for pushing a pair of pins 11 to move inward. The plurality of support rods 17 are slidably installed in the fixing frame 10. The inner ends of the pair of pins 11 and the two ends of the support rods 17 are fixed with a clamping plate 18. The thermal push rod 19 is arranged between two adjacent clamping plates 18. When any thermal push rod 19 is deformed by heat, the total length between the plurality of support rods 17 and the plurality of thermal push rods 19 can be shortened under the push of the spring 13, thereby shortening the distance between the pair of pins 11 and causing the pin 11 to be pulled out of the insertion hole 12.

[0019] See also Figure 2 As an embodiment of the present invention, a plurality of thermal push rods 19 are respectively arranged above a plurality of power distribution modules installed on the module mounting plate 5. When a fire occurs in the power distribution module, the thermal push rods 19 can be quickly heated, thereby improving the response speed after the fire.

[0020] See also Figure 8 As an embodiment of the present invention, a groove (not shown in the figure) is opened on the side wall of the card plate 18, and the end of the thermal push rod 19 is inserted into the groove to prevent the thermal push rod 19 from sliding out from between the two card plates 18 due to vibration and the like, thereby reducing the misjudgment rate.

[0021] See also Figure 6 、 Figure 7 As an embodiment of the present invention, a second spring 16 is installed above the baffle 8. The second spring 16 abuts against the upper wall of the installation cavity 2. The second spring 16 can apply a downward thrust to the baffle 8, and when the pin 11 is pulled out of the socket 12, the baffle 8 can be quickly lowered.

[0022] See also Figure 1 、 Figure 2 、 Figure 4 、 Figure 7 As an embodiment of the present invention, a one-way exhaust valve 30 communicating with the outside is provided at the top of the installation cavity 2 near the exhaust port 7. When carbon dioxide is discharged into the installation cavity 2, since the exhaust port 7 is blocked by the baffle 8, the one-way exhaust valve 30 can be used to discharge the oxygen-containing air in the installation cavity 2 when the fire extinguishing gas enters the installation cavity, while preventing external air from entering the installation cavity 2. Since the density of carbon dioxide is greater than the density of air, arranging the one-way exhaust valve 30 at the top of the installation cavity 2 is also conducive to the discharge of air.

[0023] See also Figure 2 、 Figure 5 As an embodiment of the present invention, an air intake fan 25 is installed at the bottom of the air supply cavity 3, and a filter plate 31 is installed on the outside of the air intake end of the air intake fan 25. The air intake fan 25 can suck the external air into the air supply cavity 3, and the air is sent into each installation cavity 2 through the air supply cavity 3 and the air inlet 6, so as to provide cooling gas when dissipating heat for the distribution module.

[0024] See also Figure 5 、 Figure 10 As an embodiment of the present invention, the valve 14 is provided with an air cavity 1 21 connected to the branch pipe 28 and an air cavity 2 22 connected to the air injection pipe 15. The air cavity 1 21 and the air cavity 2 22 are connected through the valve seat 23. A push rod 20 is slidably arranged in the valve 14. A valve core 24 for sealing the valve seat 23 is fixedly installed at one end of the push rod 20. The other end of the push rod 20 abuts against the baffle 8 for sealing the air inlet 6. When the baffle 8 moves downward, the push rod 20 loses its supporting force, and the air pressure inside the air cavity 1 21 can push the valve core 24 downward, thereby realizing the connection between the air cavity 1 21 and the air cavity 2 22, thereby allowing the carbon dioxide in the branch pipe 28 to pass through the valve 14 and be ejected through the air injection pipe 15.

[0025] See also Figure 4 、 Figure 5 As an embodiment of the present invention, the cabinet body 1 is provided with an inspection port 32 on the front side of each installation cavity 2. Each inspection port 32 is hingedly connected to a cabinet door 29, and a sealing strip is provided at the edge of the cabinet door 29.

[0026] The working principle and use process of the present invention are as follows: when in use, the power distribution module is installed on the module mounting plate 5 in each mounting cavity 2, and the wires are passed through the connection of each mounting cavity 2 and the cabinet door 29 for sealing treatment to prevent each mounting cavity 2 from being connected to the outside except for the air inlet 6, the exhaust port 7, and the one-way exhaust valve 30; when dissipating heat, the air intake fan 25 is started, and the external air is filtered by the filter plate 31 and enters the air supply cavity 3, and then enters the mounting cavity 2 through the air inlet 6 to dissipate heat from the power distribution module inside, and the heated gas is discharged through the exhaust port 7; when a fire occurs in the power distribution module, the thermal push rod 19 closest to it will be deformed by heat. When the thermal push rod 19 is deformed by heat, the distance between the pair of pins 11 can change, and the pair of pins 11 are pushed by the spring 13 They approach each other, so that the pin 11 is pulled out from the socket 12, and the pair of baffles 8 drops rapidly under the push of the spring 2 16, thereby sealing the air inlet 6 and the exhaust port 7 in the installation cavity 2 where the fire occurs, and preventing the external air with oxygen from entering the installation cavity 2. When the baffle 8 drops, the valve 14 is opened, and the high-pressure fire-extinguishing gas in the fire-extinguishing gas cylinder 26 is discharged from the jet pipe 15 through the gas supply pipe 27, the branch pipe 28, and the valve 14, so as to fill the installation cavity 2 where the fire occurs with fire-extinguishing gas. Since the cabinet 1 is separated into multiple installation cavities 2, the volume of each installation cavity 2 is reduced, the fire-extinguishing gas can quickly fill the installation cavity 2, avoid contact between the distribution module and oxygen, and extinguish the fire of the distribution module. The one-way exhaust valve 30 also facilitates the discharge of air in the installation cavity 2, creating favorable conditions for fire extinguishing.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An electric control cabinet with fire protection function, characterized in that: The cabinet (1) comprises a plurality of installation cavities (2) provided in the cabinet (1) along the height direction, a module installation plate (5) provided in each installation cavity (2), an air supply cavity (3) provided on one side of the plurality of installation cavities (2) in the cabinet (1), and a storage cavity (4) provided at the bottom of the cabinet (1); A plurality of air inlets (6) communicating with the air supply cavity (3) are provided on one side of the installation cavity (2), and a plurality of exhaust ports (7) communicating with the outside of the cabinet (1) are provided on the other side of the installation cavity (2). A pair of baffles (8) are slidably provided in the installation cavity (2) and on the inner sides of the air inlets (6) and the exhaust ports (7). The baffles (8) are provided with openings (9) corresponding to the plurality of exhaust ports (7) and the plurality of air inlets (6). The top of the installation cavity (2) A fixing frame (10) is provided, and a pair of latches (11) are slidably provided at both ends of the fixing frame (10), and a socket (12) matching the latch (11) is provided on the baffle (8), and a heat-sensitive shrink assembly is connected between the pair of latches (11). When a fire occurs, the heat-sensitive shrink assembly is triggered, and the pair of latches (11) moves inward. When the pair of latches (11) are inserted into the sockets (12) in the pair of baffles (8), the opening (9) corresponds to the exhaust port (7) or the air inlet (6); A valve (14) is fixedly provided on one side of the air inlet (6) in the installation cavity (2), the switch of the valve (14) is connected to a baffle (8) for blocking the air inlet (6), the air outlet end of the valve (14) is connected to an injection pipe (15), a fire extinguishing gas cylinder (26) is provided in the storage cavity (4), the fire extinguishing gas cylinder (26) is connected to an air supply pipe (27), the air supply pipe (27) extends to one side of the plurality of installation cavities (2), the air inlet end of the valve (14) in each installation cavity (2) is connected to the air supply pipe (27) through a branch pipe (28), when the baffle (8) is lowered, the valve (14) is opened, and the high-pressure gas in the fire extinguishing gas cylinder (26) enters the valve (14) through the air supply pipe (27) and the branch pipe (28), and is finally sprayed into the installation cavity (2) by the injection pipe (15).

2. The electric control cabinet with fire protection function according to claim 1, characterized in that: The heat-sensitive shrink assembly includes a plurality of support rods (17) and a plurality of heat-sensitive ejector rods (19). A pair of springs (13) for pushing a pair of the latches (11) to move inward are provided in the fixing frame (10). The plurality of support rods (17) are slidably installed in the fixing frame (10). The inner ends of the pair of the latches (11) and the two ends of the support rods (17) are fixedly provided with a clamping plate (18). The heat-sensitive ejector rod (19) is provided between two adjacent clamping plates (18).

3. The electric control cabinet with fire protection function according to claim 2, characterized in that: The plurality of thermal push rods (19) are respectively arranged above the plurality of power distribution modules installed on the module installation plate (5).

4. The electric control cabinet with fire protection function according to claim 2, characterized in that: A groove is provided on the side wall of the clamping plate (18), and the end of the heat-sensitive ejector rod (19) is inserted into the groove.

5. The electric control cabinet with fire protection function according to claim 1, characterized in that: A second spring (16) is installed above the baffle (8), and the second spring (16) abuts against the upper wall of the installation cavity (2).

6. The electric control cabinet with fire protection function according to claim 1, characterized in that: A one-way exhaust valve (30) communicating with the outside is provided at the top of the installation cavity (2) on a side close to the exhaust port (7).

7. The electric control cabinet with fire protection function according to claim 1, characterized in that: An air intake fan (25) is installed at the bottom of the air supply cavity (3), and a filter plate (31) is installed on the outer side of the air intake end of the air intake fan (25).

8. The electric control cabinet with fire protection function according to claim 1, characterized in that: The valve (14) is provided with an air cavity (21) connected to the branch pipe (28) and an air cavity (22) connected to the air injection pipe (15). The air cavity (21) and the air cavity (22) are connected through a valve seat (23). A push rod (20) is slidably provided in the valve (14). A valve core (24) for blocking the valve seat (23) is fixedly installed at one end of the push rod (20). The other end of the push rod (20) abuts against the baffle (8) for blocking the air inlet (6).

9. The electric control cabinet with fire protection function according to claim 1, characterized in that: The cabinet body (1) is provided with an inspection opening (32) on the front side of each installation cavity (2), and each inspection opening (32) is hingedly connected to a cabinet door (29), and a sealing strip is provided at the edge of the cabinet door (29).

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