A smart fire suppression system for switchgear

Abstract

This utility model discloses an intelligent fire extinguishing system for switchgear, including a switchgear body, a drive chamber at the upper end of the switchgear body, a fire extinguishing chamber at the rear end of the switchgear body, and a fire extinguishing mechanism. The fire extinguishing mechanism includes a telescopic column, a fire extinguishing pipe, nozzles, a rotating drum, and a corrugated pipe. The fixed end of the telescopic column is fixedly connected to the right end of the top wall of the switchgear body, and the telescopic end of the telescopic column is fixedly connected to the right end of the upper surface of the fire extinguishing pipe. The fire extinguishing pipe has evenly distributed nozzles inside. The rotating drum is rotatably connected to the rear end of the switchgear body, and the front end of the rotating drum is connected to the left end of the fire extinguishing pipe through a corrugated pipe. A controller is provided at the front end of the drive chamber, and the input end of the controller is electrically connected to an external power source. This intelligent fire extinguishing system for switchgear can achieve precise fire extinguishing of the fire area, effectively improving the fire extinguishing efficiency of the intelligent fire extinguishing system for switchgear.

Description

Technical Field

[0001] This utility model relates to the field of fire protection technology for power equipment, specifically to an intelligent fire extinguishing system for switchgear. Background Technology

[0002] A switchgear is a complete set of power distribution equipment assembled from primary and secondary equipment according to a certain circuit scheme. It is mainly used to control and protect lines and equipment and plays a vital role in the power system. The intelligent fire extinguishing system for switchgear is an intelligent device designed specifically for the safety protection of small electrical spaces. It integrates fire detection, alarm, control and fire extinguishing, and can efficiently and accurately deal with fire hazards in switchgear.

[0003] In the prior art, patent CN116845719B discloses an intelligent fire extinguishing system and method for high and low voltage switchgear, including a cabinet, a cabinet door, and a control unit. Several power distribution switches are installed inside the front of the cabinet, and a gas storage chamber filled with fire extinguishing gas is located at the rear. Each connection point of the power distribution switches is equipped with a spray unit and a first temperature detection unit. The first temperature detection unit is used to obtain temperature information at the connection point. A second temperature detection unit is located inside the cabinet near the cabinet door to obtain the internal temperature of the cabinet. An infrared thermal imaging sensor and a control unit are installed on the cabinet door. An air intake unit is located at the bottom of the cabinet, and an exhaust unit and a one-way valve are located at the top. An intelligent sealing system is installed at both the air intake and exhaust units. The control unit receives signals from the first temperature detection unit, the second temperature detection unit, and the infrared thermal imaging sensor, and controls the operation of the switching valve and the intelligent sealing system.

[0004] This intelligent fire extinguishing system and method for high and low voltage switchgear has some problems. For example, the location of the fire extinguishing unit is fixed. When a fire occurs in electrical equipment far from the nozzle, the extinguishing agent needs to be sprayed to a certain concentration throughout the switchgear space to achieve effective fire extinguishing. This process is relatively slow and affects the fire resistance performance of the high and low voltage switchgear. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide an intelligent fire extinguishing system for switchgear, which can achieve precise fire extinguishing of the fire area, effectively improve the fire extinguishing efficiency of the intelligent fire extinguishing system for switchgear, and effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an intelligent fire extinguishing system for switch cabinets, including a switch cabinet body, a drive compartment at the upper end of the switch cabinet body, a fire extinguishing compartment at the rear end of the switch cabinet body, and a fire extinguishing mechanism;

[0007] Fire extinguishing mechanism: It includes a telescopic column, a fire extinguishing pipe, nozzles, a rotating drum, and a corrugated pipe. The fixed end of the telescopic column is fixedly connected to the right end of the top wall of the switch cabinet. The telescopic end of the telescopic column is fixedly connected to the right end of the upper surface of the fire extinguishing pipe. The fire extinguishing pipe is equipped with evenly distributed nozzles. The rotating drum is rotatably connected to the rear end of the switch cabinet. The front end of the rotating drum and the left end of the fire extinguishing pipe are connected through a corrugated pipe, which can achieve precise fire extinguishing of the fire area and effectively improve the fire extinguishing efficiency of the intelligent fire extinguishing system of the switch cabinet.

[0008] Furthermore, a controller is provided at the front end of the drive compartment. The input terminal of the controller is electrically connected to an external power source to control various electrical appliances.

[0009] Furthermore, the fire extinguishing mechanism also includes an electric push rod, which is located at the left end inside the drive chamber. The telescopic end of the electric push rod is fixedly connected to the left end of the upper surface of the fire extinguishing pipe. The input end of the electric push rod is electrically connected to the output end of the controller. A laser rangefinder is installed at the front end of the drive chamber, and a laser reflector is fixedly connected to the front end of the upper surface of the fire extinguishing pipe. The laser rangefinder and the laser reflector are vertically aligned. The laser rangefinder is bidirectionally electrically connected to the controller to provide driving force for the vertical movement of the fire extinguishing pipe.

[0010] Furthermore, the switch cabinet is internally fixed with evenly distributed fixing rods, and three support plates are fixedly connected between the four fixing rods. The lower end of the switch cabinet and the interior of the support plates are provided with evenly distributed through holes, and the rear end of the switch cabinet is provided with evenly distributed round openings to provide installation space for electrical equipment.

[0011] Furthermore, three infrared thermal imagers are installed on the inner right side of the switch cabinet. Each infrared thermal imager is bidirectionally electrically connected to the controller to detect fire conditions at various levels inside the switch cabinet.

[0012] Furthermore, a fire extinguishing chamber is provided at the lower end of the rear surface of the switch cabinet. A fire extinguishing gas cylinder is provided at the left end of the fire extinguishing chamber. A fixing cylinder is fixedly connected to the middle of the rear surface of the switch cabinet. The fixing cylinder is located inside the fire extinguishing chamber. The rear end of the fixing cylinder and the upper end of the fire extinguishing gas cylinder are connected through a connecting air pipe. An electric pressure valve is provided in the middle of the connecting air pipe. A pressure tank is provided at the right end of the fire extinguishing chamber. The upper end of the pressure tank and the lower end of the connecting air pipe are connected through a connecting air pipe. An electric pressure valve is provided in the middle of the connecting air pipe. The input ends of both electric pressure valves are electrically connected to the output end of the controller to provide extinguishing agent to the fire extinguishing unit.

[0013] Furthermore, fan slots are provided at the lower ends of the left and right sides of the switch cabinet, and fans are installed inside the fan slots. The input ends of the fans are electrically connected to the output ends of the controller to provide driving force for accelerating the exchange of air inside and outside the switch cabinet.

[0014] Furthermore, the front end of the switch cabinet is hinged with symmetrically distributed cabinet doors, which facilitates the closing and opening of the switch cabinet.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This intelligent fire extinguishing system for switchgear has the following advantages:

[0016] The fire extinguishing pipe is moved vertically by an electric push rod, allowing the nozzle to quickly reach the fire level. At the same time, the rotation of the drum and the expansion and contraction of the corrugated pipe ensure the stability of the fire extinguishing material supply, enabling precise fire extinguishing of the fire area and effectively improving the fire extinguishing efficiency of the switch cabinet intelligent fire extinguishing system. Compared with fire extinguishing systems with fixed nozzle positions, it can achieve a faster fire extinguishing effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the rear side of the present invention;

[0020] Figure 4 This is a cross-sectional view of the rear side of the fire extinguishing chamber of this utility model;

[0021] Figure 5 This is a schematic diagram of the fire extinguishing mechanism of this utility model.

[0022] In the diagram: 1. Switch cabinet, 2. Drive compartment, 3. Fire extinguishing mechanism, 31. Telescopic column, 32. Fire extinguishing pipe, 33. Nozzle, 34. Electric push rod, 35. Rotary drum, 36. Corrugated pipe, 4. Laser rangefinder sensor, 5. Laser reflector, 6. Infrared thermal imager, 7. Fixed rod, 8. Support plate, 9. Controller, 10. Fire extinguishing compartment, 11. Fire extinguishing gas cylinder, 12. Pressure tank, 13. Connecting gas pipe one, 14. Connecting gas pipe two, 15. Electric pressure valve one, 16. Electric pressure valve two, 17. Fan sump, 18. Fan, 19. Cabinet door. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5This embodiment provides a technical solution: an intelligent fire extinguishing system for switch cabinets, including a switch cabinet body 1, a drive chamber 2 is provided at the upper end of the switch cabinet body 1, a fire extinguishing chamber 10 is provided at the rear end of the switch cabinet body 1, a controller 9 is provided at the front end of the drive chamber 2, the input end of the controller 9 is electrically connected to an external power supply, and also includes a fire extinguishing mechanism 3.

[0025] Fire extinguishing mechanism 3 includes a telescopic column 31, a fire extinguishing pipe 32, nozzles 33, a rotating drum 35, and a corrugated pipe 36. The fixed end of the telescopic column 31 is fixedly connected to the right end of the top wall of the switch cabinet 1. The telescopic end of the telescopic column 31 is fixedly connected to the right end of the upper surface of the fire extinguishing pipe 32. The fire extinguishing pipe 32 is equipped with evenly distributed nozzles 33. The rotating drum 35 is rotatably connected to the rear end of the switch cabinet 1. The front end of the rotating drum 35 and the left end of the fire extinguishing pipe 32 are connected through the corrugated pipe 36. The fire extinguishing mechanism 3 also includes an electric push rod 34, which is located at the left end inside the drive chamber 2. The telescopic end of the electric push rod 34 is fixedly connected to the left end of the upper surface of the fire extinguishing pipe 32. The input end of the electric push rod 34 is electrically connected to the output end of the controller 9. The front end of the drive chamber 2 is equipped with a laser measuring device. A laser reflector 5 is fixedly connected to the front end of the upper surface of the fire extinguishing pipe 32, and the laser range sensor 4 and the laser reflector 5 are vertically aligned. The laser range sensor 4 is bidirectionally electrically connected to the controller 9. Three infrared thermal imagers 6 are installed on the inner right wall of the switch cabinet 1. The infrared thermal imagers 6 are all bidirectionally electrically connected to the controller 9, and the controller 9 enables the operation of the infrared thermal imagers 6. Since all objects with a temperature higher than absolute zero (-273℃) will radiate infrared energy, and the radiation intensity is positively correlated with the surface temperature of the object, the conductors, contacts, joints and other components inside the switch cabinet 1 will generate Joule heat when current passes through them. If there are faults such as poor contact, overload or partial discharge, it will cause the local temperature to rise abnormally. The thermal imager 6 receives infrared energy radiated from the surface of an object through its high-sensitivity infrared detector and converts it into an electrical signal. This signal is then processed by the signal processing module of the infrared thermal imager 6 to generate a visualized thermal image corresponding to the temperature distribution. High-temperature areas are typically displayed in red or yellow, while low-temperature areas are displayed in blue or green. The infrared thermal imager 6 then sends the corresponding layer of infrared thermal imaging information to the signal receiving end of the controller 9 in real time. The controller 9 presets an alarm threshold based on the normal operating temperature range of the equipment. When the temperature in a certain area exceeds the threshold, the controller 9 pushes an early warning message and activates the electric push rod 34. The telescopic end of the electric push rod 34 extends, pushing the fire extinguishing pipe 32 downwards. Simultaneously, the telescopic end of the telescopic column 31 extends accordingly, assisting the vertical movement of the fire extinguishing pipe 32. As the fire extinguishing pipe 32 moves, the rotating drum 35 follows suit with adaptive rotation, and the corrugated pipe 36 extends or retracts accordingly. The vertical movement of the fire extinguishing pipe 32 drives the laser reflector 5 to move vertically as well. Simultaneously, the controller 9 activates the laser rangefinder 4. The laser probe of the laser rangefinder 4 emits a laser beam towards the laser reflector 5. After the laser beam contacts the laser reflector 5, it is reflected back to the laser probe of the laser rangefinder 4. The laser rangefinder 4 controls the real-time distance between the laser reflector 5 and the top wall of the switch cabinet 1 based on the speed of light and the time it takes for the laser to reflect back, thereby achieving real-time distance monitoring of the fire extinguishing pipe 32. When the fire extinguishing pipe 35 reaches the designated height, the controller 9 closes the electric push rod 34. When the infrared thermal imager 6 detects that the fire has ended...Controller 9 closes electric pressure valve 15 and electric pressure valve 16, and activates electric push rod 34. The retraction of the extension end of electric push rod 34 causes the fire extinguishing pipe 32 to move upward.

[0026] Among them: the switch cabinet 1 is fixedly connected with evenly distributed fixing rods 7, and three support plates 8 are fixedly connected between the four fixing rods 7. The lower end of the switch cabinet 1 and the interior of the support plates 8 are provided with evenly distributed through holes, and the rear end of the switch cabinet 1 is provided with evenly distributed round openings.

[0027] Specifically: A fire extinguishing chamber 10 is installed at the lower end of the rear surface of the switch cabinet 1. A fire extinguishing gas cylinder 11 is installed at the left end inside the fire extinguishing chamber 10. A fixing cylinder is fixedly connected to the middle of the rear surface of the switch cabinet 1. The fixing cylinder is located inside the fire extinguishing chamber 10. The rear end of the fixing cylinder and the upper end of the fire extinguishing gas cylinder 11 are connected through a connecting pipe 13. An electric pressure valve 16 is installed in the middle of the connecting pipe 13. A pressure tank 12 is installed at the right end inside the fire extinguishing chamber 10. The upper end of the pressure tank 12 and the lower end of the connecting pipe 13 are connected through a connecting pipe 14. An electric pressure valve 15 is installed in the middle of the connecting pipe 14. The inputs of the electric pressure valve 15 and the electric pressure valve 16 are... All terminals are electrically connected to the output terminal of controller 9. Controller 9 closes electric push rod 34 and opens electric pressure valve 15 and electric pressure valve 2 16. The compressed carbon dioxide inside pressure tank 12 enters the interior of connecting pipe 13 through connecting pipe 2 14, and then enters the interior of fixed cylinder through connecting pipe 13. A negative pressure is created inside connecting pipe 13, so that the extinguishing agent inside fire extinguishing gas tank 11 is sprayed to fixed cylinder through connecting pipe 13 under air pressure, and then enters the interior of corrugated pipe 36 through rotating cylinder 35, and finally enters the interior of fire extinguishing pipe 32. Then it is sprayed out through evenly distributed nozzles 33, accurately sprayed to the fire area, and achieves efficient and accurate fire extinguishing.

[0028] The switch cabinet 1 has fan slots 17 on the lower ends of both sides of the switch cabinet 1. Each fan slot 17 is equipped with a fan 18. The input end of each fan 18 is electrically connected to the output end of the controller 9. During normal use of the switch cabinet 1, the controller 9 enables the fan 18 to run. The operation of the fan 18 draws the air inside the switch cabinet 1 to the outside of the switch cabinet 1 through the fan slots 17. At the same time, the air outside the switch cabinet 1 enters the switch cabinet 1 through the round opening at the rear end of the switch cabinet 1, so as to quickly exchange the air inside and outside the switch cabinet 1 and realize the heat dissipation of the power equipment.

[0029] Among them: the front end of the switch cabinet 1 is hinged to symmetrically distributed cabinet doors 19 (a switch lock is provided between the middle of the inner surfaces of the two cabinet doors 19, and the switch lock adopts the rotary lock in the prior art. The opening and closing of the cabinet doors 19 in the connected state are completed by the switch lock).

[0030] The working principle of the intelligent fire extinguishing system for switchgear provided by this utility model is as follows: During operation, personnel first stably place the switchgear 1, drive compartment 2, and other mechanisms in a horizontal working area. After stable placement, during normal use of the switchgear 1, the controller 9 activates the fan 18. The fan 18 draws the gas inside the switchgear 1 to the outside of the switchgear 1 through the fan slot 17. Simultaneously, the outside gas enters the switchgear 1 through the round opening at the rear end of the switchgear 1, achieving rapid air exchange between the inside and outside of the switchgear 1 and heat dissipation of the electrical equipment. Personnel activate the infrared thermal imager 6 through the controller 9. Since all objects with a temperature above absolute zero (-273℃) radiate infrared energy, the infrared thermal imager 6... The radiation intensity is positively correlated with the surface temperature of the object. When current flows through the conductors, contacts, and joints inside the switch cabinet 1, Joule heating is generated. If there are faults such as poor contact, overload, or partial discharge, the local temperature will rise abnormally. The infrared thermal imager 6 receives the infrared energy radiated from the object's surface through its high-sensitivity infrared detector and converts it into an electrical signal. After processing by the signal processing module of the infrared thermal imager 6, a visual thermal image corresponding to the temperature distribution is generated. High-temperature areas are usually displayed in red or yellow, and low-temperature areas in blue or green. The infrared thermal imager 6 then sends the corresponding layer of infrared thermal imaging information to the signal receiving end of the controller 9 in real time. The controller 9 presets alarms based on the normal operating temperature range of the equipment. When the temperature in a certain area exceeds the threshold, the controller 9 sends an early warning message, shuts down the fan 18, and activates the electric push rod 34. The telescopic end of the electric push rod 34 extends, pushing the fire extinguishing pipe 32 downward. At the same time, the telescopic end of the telescopic column 31 extends to assist the vertical movement of the fire extinguishing pipe 32. During the movement of the fire extinguishing pipe 32, the rotating drum 35 follows and rotates adaptively, while the corrugated pipe 36 extends or retracts. The vertical movement of the fire extinguishing pipe 32 drives the laser reflector 5 to move vertically. Simultaneously, the controller 9 activates the laser rangefinder 4. The laser probe of the laser rangefinder 4 emits a laser beam towards the laser reflector 5. After the laser beam contacts the laser reflector 5, it is reflected back to the laser probe of the laser rangefinder 4. The laser rangefinder 4 determines the laser range based on the speed of light and the laser reflection. During the return time, the real-time distance control between the laser reflector 5 and the top wall of the switch cabinet 1 is performed, thereby realizing the real-time distance monitoring of the fire extinguishing pipe 32. When the fire extinguishing pipe 35 reaches the height of the designated area, the controller 9 closes the electric push rod 34 and opens the electric pressure valve 15 and the electric pressure valve 2 16. The compressed carbon dioxide inside the pressure tank 12 enters the interior of the connecting pipe 13 through the connecting pipe 2 14, and then enters the interior of the fixed cylinder through the connecting pipe 13. A negative pressure is created inside the connecting pipe 13, so that the extinguishing agent inside the fire extinguishing gas tank 11 is sprayed into the fixed cylinder through the connecting pipe 13 under the action of air pressure, and then enters the interior of the bellows 36 through the rotating drum 35, and finally enters the interior of the fire extinguishing pipe 32, and is then sprayed out through the evenly distributed nozzles 33.The fire is precisely targeted to the fire area for efficient and accurate fire suppression. When the infrared thermal imager 6 detects the end of the fire, the controller 9 closes the electric pressure valve 15 and the electric pressure valve 16, and activates the electric push rod 34. The retraction of the extension end of the electric push rod 34 moves the fire extinguishing pipe 32 upward.

[0031] It is worth noting that the controller 9 disclosed in the above embodiments can be an S7-200, the laser rangefinder 4 can be a DT35-B15551, the infrared thermal imager 6 can be a TD600, the electric pressure valve 15 and the electric pressure valve 16 can both be A21H-16P, and the fan 18 can be an FDL-6A. The controller 9 controls the operation of the electric push rod 34, the laser rangefinder 4, the infrared thermal imager 6, the electric pressure valve 15, the electric pressure valve 16, and the fan 18 using methods commonly used in the prior art.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A smart fire extinguishing system for switch cabinets, comprising a switch cabinet body (1), a drive chamber (2) disposed at the upper end of the switch cabinet body (1), and a fire extinguishing chamber (10) disposed at the rear end of the switch cabinet body (1), characterized in that: It also includes fire extinguishing agencies (3); Fire extinguishing mechanism (3): It includes telescopic column (31), fire extinguishing pipe (32), nozzle (33), rotating drum (35) and corrugated pipe (36). The fixed end of the telescopic column (31) is fixedly connected to the right end of the top wall of the switch cabinet (1). The telescopic end of the telescopic column (31) is fixedly connected to the right end of the upper surface of the fire extinguishing pipe (32). The fire extinguishing pipe (32) is provided with evenly distributed nozzles (33). The rotating drum (35) is rotatably connected to the rear end of the switch cabinet (1). The front end of the rotating drum (35) and the left end of the fire extinguishing pipe (32) are connected through the corrugated pipe (36).

2. The intelligent fire extinguishing system for switchgear according to claim 1, characterized in that: The front end of the drive compartment (2) is provided with a controller (9), and the input end of the controller (9) is electrically connected to an external power source.

3. The intelligent fire extinguishing system for switchgear according to claim 2, characterized in that: The fire extinguishing mechanism (3) also includes an electric push rod (34), which is located at the left end inside the drive chamber (2). The telescopic end of the electric push rod (34) is fixedly connected to the left end of the upper surface of the fire extinguishing pipe (32). The input end of the electric push rod (34) is electrically connected to the output end of the controller (9). A laser range sensor (4) is provided at the front end of the drive chamber (2). A laser reflector (5) is fixedly connected to the front end of the upper surface of the fire extinguishing pipe (32). The laser range sensor (4) and the laser reflector (5) are vertically aligned. The laser range sensor (4) is bidirectionally electrically connected to the controller (9).

4. The intelligent fire extinguishing system for switchgear according to claim 1, characterized in that: The switch cabinet (1) is fixedly connected with uniformly distributed fixing rods (7), and three support plates (8) are fixedly connected between the four fixing rods (7). The lower end of the switch cabinet (1) and the interior of the support plates (8) are provided with uniformly distributed through holes, and the rear end of the switch cabinet (1) is provided with uniformly distributed round openings.

5. The intelligent fire extinguishing system for switchgear according to claim 2, characterized in that: Three infrared thermal imagers (6) are installed on the inner right side of the switch cabinet (1), and all infrared thermal imagers (6) are bidirectionally electrically connected to the controller (9).

6. The intelligent fire extinguishing system for switchgear according to claim 2, characterized in that: A fire extinguishing chamber (10) is provided at the lower end of the rear surface of the switch cabinet (1). A fire extinguishing gas cylinder (11) is provided at the left end of the fire extinguishing chamber (10). A fixed cylinder is fixedly connected to the middle of the rear surface of the switch cabinet (1). The fixed cylinder is located inside the fire extinguishing chamber (10). The rear end of the fixed cylinder and the upper end of the fire extinguishing gas cylinder (11) are connected through a connecting pipe (13). An electric pressure valve (16) is provided in the middle of the connecting pipe (13). A pressure tank (12) is provided at the right end of the fire extinguishing chamber (10). The upper end of the pressure tank (12) and the lower end of the connecting pipe (13) are connected through a connecting pipe (14). An electric pressure valve (15) is provided in the middle of the connecting pipe (14). The input ends of the electric pressure valve (15) and the electric pressure valve (16) are both electrically connected to the output end of the controller (9).

7. The intelligent fire extinguishing system for switchgear according to claim 2, characterized in that: The lower ends of the left and right sides of the switch cabinet (1) are provided with fan slots (17), and fans (18) are provided inside the fan slots (17). The input end of the fans (18) is electrically connected to the output end of the controller (9).

8. The intelligent fire extinguishing system for switchgear according to claim 1, characterized in that: The front end of the switch cabinet (1) is hinged with symmetrically distributed cabinet doors (19).

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