Intelligent partition fire extinguishing electrical cabinet

Abstract

The invention relates to an intelligent partitioned fire extinguishing electrical cabinet, and effectively solves the problems that a fire extinguishing agent cannot cover an ignition point and the fire behavior is easy to spread. According to the technical scheme, the fire extinguishing device comprises an outer box body, and a support assembly and a fire extinguishing assembly are arranged in the outer box body; a cabinet door is arranged on the front side of the outer box body, supporting plates are arranged on the left side and the right side of the support assembly, a plurality of ventilation openings are formed in the supporting plates, a plurality of blocking pieces are arranged in each ventilation opening, and the blocking pieces can block the ventilation openings after rotating synchronously. A plurality of partition plates and cross beams are arranged between the two supporting plates, and the partition plates divide the interior of the support into a plurality of cavities. A plurality of threading holes are formed in each partition plate; the fire extinguishing assembly comprises a fire extinguisher, an outlet of the fire extinguisher is connected with a pipeline, a branch pipe located in each cavity is arranged on the pipeline, and an electromagnetic valve is arranged at the end of each branch pipe; according to the intelligent fire extinguishing device, the heat dissipation design is considered, meanwhile, intelligent partition fire extinguishing can be achieved, and the ignition point is completely covered.

Description

Technical Field

[0001] The invention relates to the technical field of electrical cabinets, in particular to an intelligent zoned fire extinguishing electrical cabinet. Background Art

[0002] When the load in the electrical cabinet is large, high temperature will be generated, which will cause the insulation material on the wire or the components to catch fire. If the fire is not extinguished in time, it is easy to cause the fire in the entire electrical cabinet to be uncontrollable and cause a larger fire. Therefore, it is very important to extinguish the initial fire in the electrical cabinet in time. At present, early warning and other methods are generally used, and maintenance personnel carry out fire extinguishing, which is easy to cause untimely fire extinguishing. If the cabinet itself can automatically extinguish the fire, it can greatly prevent the spread of the fire.

[0003] At present, there are many electrical cabinets on the market that can extinguish fires autonomously. For example, patent document CN117224880A discloses a closed electrical cabinet gas automatic fire extinguishing device and method thereof, which uses the method of exhausting and delivering fire extinguishing gas to extinguish fires. The principle is to extract oxygen from the cabinet and replace or cover the fire point with gas such as carbon dioxide. However, the cabinet is large in size and has low exhaust efficiency. It is difficult to quickly and completely extract the internal oxygen, which can easily delay the best time for fire fighting. Moreover, the method of introducing fire extinguishing gas cannot extinguish the fire at the fire point, and the design of the device has the defect that the fire extinguishing gas can be easily directly extracted; it is easy to cause the fire to spread.

[0004] It is well known that 1kg of carbon dioxide can produce 509 liters of gas, which is about 0.5m³ in volume; and the volume of the cabinet ranges from a few cubic meters to dozens of cubic meters; it is difficult to completely cover the fire point with the gas produced by a small fire extinguisher.

[0005] To this end, patent document CN117504207A discloses a perfluorohexanone fire extinguishing device based on infrared activation, which deploys a main gas tank on the outside of the cabinet, making up for the deficiency of the small volume of the fire extinguisher 301 deployed on the cabinet; however, it is more suitable for use when multiple electrical cabinets are deployed together. For a single electrical cabinet, the deployment of additional large-scale fire extinguishing equipment is not convenient enough, and the equipment is complicated and costly.

[0006] According to the current experience of electrical cabinet fires, the initial spread of fire generally occurs along the insulation layer on the surface of the wires. Therefore, how to control the spread of fire along the wires is also an urgent problem to be solved.

[0007] In summary, in the prior art, the methods of extinguishing fires in electrical cabinets are such as the above two types of equipment, and both types of equipment have disadvantages. Therefore, there is a need for a more intelligent and more effective electrical cabinet that can automatically extinguish fires. Summary of the invention

[0008] In view of the above situation, in order to solve the problems existing in the prior art, the purpose of the present invention is to provide an intelligent partitioned fire extinguishing electrical cabinet, which can effectively solve the problem that the fire extinguishing agent cannot cover the fire point and the fire is easy to spread.

[0009] The technical solution thereof comprises an outer box body, a bracket assembly and a fire extinguishing assembly arranged inside the outer box body; The front side of the outer box is a cabinet door, and there are multiple heat dissipation channels on the left and right side walls of the outer box; The left and right sides of the bracket assembly are support plates, and multiple vents are provided on the support plates. Multiple baffles are provided in each vent, and the multiple baffles can block the vents after synchronous rotation; multiple partitions and beams are provided between the two support plates, and the partitions divide the inside of the bracket into multiple chambers; each partition is provided with multiple threading holes; The fire extinguishing assembly includes a fire extinguisher, the outlet of the fire extinguisher is connected to a pipeline, the pipeline is provided with a branch pipe located in each chamber, and the end of each branch pipe is provided with a solenoid valve; each chamber is provided with multiple infrared sensors corresponding to the solenoid valve in the chamber.

[0010] Preferably, multiple vertical shafts are passed through the left and right sides of the support plate, and the baffles are installed on the vertical shafts; a gear is installed at the lower end of each vertical shaft; two left and right racks are arranged at the bottom of the bracket assembly, and the racks are simultaneously meshed with multiple gears on the same side; the left and right racks are respectively driven by motors to move forward and backward.

[0011] Preferably, a PLC controller is also included. The PLC controller is programmed to: after detecting that the temperature of the infrared sensor exceeds a preset value, it will drive the left and right motors to rotate, so that the baffle closes the vent, and at the same time it can also open the solenoid valve in the chamber corresponding to the infrared sensor.

[0012] Preferably, the left and right support plates are provided with a plurality of mounting holes from top to bottom, and a plurality of pads are provided under each partition plate, and the pads are fixed to the support plates via bolts and the mounting holes.

[0013] Preferably, the left and right support plates are provided with a plurality of mounting holes from top to bottom, and longitudinal beams in the front-to-rear direction are fixed to the left and right sides of each cross beam, and the longitudinal beams are fixed to the support plates through bolts and the mounting holes.

[0014] Preferably, after the cabinet door is closed, the side wall of the cabinet door fits tightly against the front sides of the left and right support plates.

[0015] Preferably, the unused mounting holes and unused threading holes are sealed with fireproof tape.

[0016] Preferably, a fan is installed in each of the heat dissipation channels.

[0017] Preferably, the fire extinguishers are placed below the lowest partition in a plurality of parallel connections, and the fire extinguishers are carbon dioxide fire extinguishers.

[0018] The present invention has the following advantages: 1. Through the double-layer design of inside and outside, the design of multiple independent chambers inside is satisfied without affecting the external aesthetics and heat dissipation. 2. Through the internal multi-layer height-adjustable partitions and longitudinal beams, the needs of electrical component layout in different scenarios are met. 3. Before the fire, multiple chambers are ventilated left and right to ensure efficient heat dissipation. After the fire, multiple chambers are independent of each other to prevent the fire from spreading wantonly. At the same time, single-chamber or multi-chamber fires can be extinguished in a targeted manner to avoid the problem of insufficient fire extinguishing agent to cover the fire point. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional schematic diagram of the present invention Figure Ⅰ .

[0020] Figure 2 A three-dimensional schematic diagram of the present invention Figure II (Remove outer box 1).

[0021] Figure 3 A three-dimensional schematic diagram of the present invention Figure III (Remove outer box 1).

[0022] Figure 4 It is a three-dimensional schematic diagram of the coordination of a fire extinguisher 301 , a pipeline 302 , and a solenoid valve 304 .

[0023] In the figure: outer box 1; bracket assembly 2; fire extinguishing assembly 3; cabinet door 101; heat dissipation channel 102; support plate 201; vent 202; baffle 203; partition 204; crossbeam 205; threading hole 206; vertical shaft 207; gear 208; rack 209; motor 210; mounting hole 211; cushion block 212; longitudinal beam 213; fire extinguisher 301; pipeline 302; branch pipe 303; solenoid valve 304; infrared sensor 305. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0025] This embodiment provides an intelligent zoned fire extinguishing electrical cabinet, which includes an outer box body 1 , and a bracket assembly 2 and a fire extinguishing assembly 3 fixed inside the outer box body 1 .

[0026] The front side of the outer box 1 is a cabinet door 101, the left side of the cabinet door 101 is hinged and can be opened and closed freely. After the cabinet door 101 is closed, it can contact the front side of the support plate 201 and the partition plate 204 in the bracket assembly 2, so as to form the sealing requirement of the chamber by using the cabinet door 101. There are multiple heat dissipation channels 102 on the left and right side walls of the outer box 1; the heat dissipation channels 102 can be composed of multiple small holes, and the heat dissipation channels 102 adopt a passive heat dissipation mode.

[0027] In some embodiments, a fan is installed in the heat dissipation channel 102 to achieve active heat dissipation; the left side is for air inlet and the right side is for air outlet; rapid active heat dissipation of the electrical cabinet can be achieved, which can meet the heat dissipation requirements during peak power consumption or high temperature weather, and suppress the occurrence of fire from the root.

[0028] Description of the principles and structure of zoned fire extinguishing.

[0029] In this embodiment, the support assembly 2 is composed of a frame and two left and right support plates 201, each support plate 201 is provided with a plurality of vents 202, each support plate 201 is penetrated by a plurality of vertical shafts 207, the vertical shafts 207 also penetrate the vents 202, and a baffle 203 located in each vent 202 is installed on the vertical shaft 207; that is, the plurality of baffles 203 at each vent 202 form a shutter structure, and the plurality of vents 202 from top to bottom are rotated simultaneously through the vertical shaft 207; a gear 208 is installed at the lower end of the vertical shaft 207, and the gears 208 at the lower end of the vertical shaft 207 on the same side are simultaneously meshed by a rack 209, and the rack 209 is driven by a motor 210 to move forward and backward. In addition, a plurality of partitions 204 are arranged between the two support plates 201, and the partitions 204 divide the interior of the support into a plurality of chambers.

[0030] When the controller detects a fire, it will control the motors 210 on the left and right sides to rotate simultaneously, and then the baffles 203 on the left and right sides will rotate simultaneously to achieve the blocking of the vent 202. It should be noted that the blocking is not completely sealed. When a large amount of carbon dioxide gas is released in the chamber, the air pressure in the chamber increases, and part of the air in the cabinet escapes outward along the gap. After the pressure in the chamber stops increasing, a large amount of carbon dioxide gas will remain in the chamber, thereby covering the fire point in the chamber.

[0031] Through the above method, fire extinguishing can be achieved in different areas, which makes up for the problem that the amount of carbon dioxide released in traditional cabinets is limited and cannot cover the fire point. Targeted fire extinguishing can be achieved through different areas, and carbon dioxide can be used to cover the fire point to the maximum extent.

[0032] Structural description of the free adjustment of the layout within the cabinet.

[0033] In this embodiment, the left and right support plates 201 are provided with a plurality of mounting holes 211 from top to bottom, and a plurality of pads 212 are provided below each partition plate 204, and the pads 212 are fixed to the support plates 201 via bolts and the mounting holes 211. The left and right sides of each cross beam 205 are fixed with longitudinal beams 213 in the front-rear direction, and the longitudinal beams 213 are fixed to the support plates 201 via bolts and the mounting holes 211.

[0034] The design of multiple mounting holes 211 allows for free adjustment of the height of each layer of partition 204, as well as the mounting height and number of longitudinal beams 213. Electrical components can be layered in different chambers; and electrical wires pass through the threading holes 206 on the partition 204 to connect the upper and lower electrical components. Unused threading holes 206 and mounting holes 211 are sealed with waterproof tape.

[0035] This method can be used to arrange electrical components of different sizes, and the layer height and number of layers can be freely adjusted; the electrical components can be installed in layers and completely isolated from each other. In this way, on the one hand, the needs of fire extinguishing mentioned above can be met; on the other hand, it can prevent the fire from spreading along the wires and prevent the flames from damaging the electrical components in other chambers. Minimize the fire and its impact.

[0036] Regarding the layout design of fire extinguisher 301.

[0037] In this embodiment, the fire extinguishing assembly 3 includes a fire extinguisher 301, which is placed below the lowest partition 204 in a parallel manner, and the fire extinguisher 301 is a carbon dioxide fire extinguisher 301; the outlet of the fire extinguisher 301 is connected to a pipeline 302, and the pipeline 302 is provided with a branch pipe 303 located in each chamber, and the end of each branch pipe 303 is provided with a solenoid valve 304; each chamber is provided with a plurality of infrared sensors 305 corresponding to the solenoid valve 304 in the chamber. The plurality of infrared sensors 305 in each chamber can be arranged for different electrical components or different angles to meet the needs of comprehensive monitoring.

[0038] By setting up a PLC controller, the PLC controller is programmed to achieve: after detecting that the temperature of the infrared sensor 305 exceeds a preset value, the left and right motors 210 will be driven to rotate, so that the baffle closes the vent 202, and at the same time, the solenoid valve 304 in the chamber corresponding to the infrared sensor 305 can be opened.

[0039] When the temperature in a chamber rises and exceeds the set value, it is suspected that a fire has occurred. The PLC controller will close the ventilation holes 202 on the left and right sides, so that each chamber forms an independent closed structure. Then, in the chamber where the fire has occurred, the solenoid valve 304 is opened to release the carbon dioxide in the fire extinguisher 301 in a centralized manner, so that the area is filled with carbon dioxide, and finally the fire point is covered, and the fire is automatically extinguished.

[0040] After the maintenance personnel re-inspect and perform corresponding maintenance on the electrical cabinet, the fire extinguisher 301 is replenished in time and the baffle is manually controlled to reset.

Claims

1. An intelligent zoned fire extinguishing electrical cabinet, comprising an outer box (1), characterized in that: The outer box body (1) is provided with a bracket assembly (2) and a fire extinguishing assembly (3); The front side of the outer box body (1) is a cabinet door (101), and the left and right side walls of the outer box body (1) are provided with a plurality of heat dissipation channels (102); The left and right sides of the support assembly (2) are support plates (201), and a plurality of vents (202) are provided on the support plate (201), and a plurality of baffles (203) are provided in each vent (202), and the plurality of baffles (203) can block the vents (202) after synchronous rotation; a plurality of partitions (204) and crossbeams (205) are provided between the two support plates (201), and the partitions (204) divide the interior of the support into a plurality of chambers; and a plurality of threading holes (206) are provided on each partition (204); The fire extinguishing assembly (3) comprises a fire extinguisher (301), the outlet of the fire extinguisher (301) is connected to a pipeline (302), the pipeline (302) is provided with a branch pipe (303) located in each chamber, and the end of each branch pipe (303) is provided with a solenoid valve (304); each chamber is provided with a plurality of infrared sensors (305) corresponding to the solenoid valve (304) in the chamber.

2. The intelligent partitioned fire extinguishing electrical cabinet according to claim 1 is characterized in that: A plurality of vertical shafts (207) are passed through the left and right sides of the support plate (201), and the baffles (203) are mounted on the vertical shafts (207); a gear (208) is mounted on the lower end of each vertical shaft (207); two left and right racks (209) are arranged at the bottom of the bracket assembly (2), and the racks (209) are meshed with the plurality of gears (208) on the same side at the same time; and the two left and right racks (209) are respectively driven by the motor (210) to move forward and backward.

3. The intelligent partitioned fire extinguishing electrical cabinet according to claim 1 is characterized in that: The PLC controller is also included. The PLC controller is programmed to: upon detecting that the temperature of the infrared sensor (305) exceeds a preset value, drive the left and right motors (210) to rotate, so that the baffle closes the vent (202), and can also open the solenoid valve (304) in the chamber corresponding to the infrared sensor (305).

4. The intelligent partitioned fire extinguishing electrical cabinet according to claim 1 is characterized in that: The left and right support plates (201) are provided with a plurality of mounting holes (211) from top to bottom, and a plurality of cushion blocks (212) are provided below each partition plate (204), and the cushion blocks (212) are fixed to the support plates (201) via bolts and the mounting holes (211).

5. The intelligent partitioned fire extinguishing electrical cabinet according to claim 1 is characterized in that: The left and right support plates (201) are provided with a plurality of mounting holes (211) from top to bottom, and longitudinal beams (213) in the front-rear direction are fixed to the left and right sides of each cross beam (205), and the longitudinal beams (213) are fixed to the support plates (201) via bolts and the mounting holes (211).

6. The intelligent partitioned fire extinguishing electrical cabinet according to claim 1, characterized in that: When the cabinet door (101) is closed, the side wall of the cabinet door (101) is tightly fitted to the front sides of the left and right support plates (201).

7. The intelligent partitioned fire extinguishing electrical cabinet according to claim 1, characterized in that: The unused mounting holes (211) and unused threading holes (206) are both sealed with fireproof tape.

8. The intelligent partitioned fire extinguishing electrical cabinet according to claim 1 is characterized in that: A fan is installed in each of the heat dissipation channels (102).

9. The intelligent partitioned fire extinguishing electrical cabinet according to claim 1, characterized in that: The fire extinguishers (301) are placed below the lowest partition (204) in a plurality of parallel connections, and the fire extinguishers (302) are carbon dioxide fire extinguishers.

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