Switchgear fire extinguishing device capable of quick response

Abstract

The utility model relates to electrical equipment field especially can quick response's switch cabinet fire extinguishing device, including fixed plate and venturi, the upper end surface of fixed plate is provided with mounting plate, the lower end surface of fixed plate is hinged to have folding plate, and folding plate is connected with mounting plate through fixed assembly, and monitoring assembly is arranged on mounting plate and folding plate, the front side of folding plate is provided with telescopic component no.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment, and in particular to a fire extinguishing device for switchgear that can respond quickly. Background Technology

[0002] Switchgear is a critical piece of equipment in power systems, responsible for functions such as power distribution, control, and protection. However, due to factors such as long-term operation, insulation aging, short circuits, overloads, or poor contact, arcing faults or localized overheating may occur inside the switchgear, potentially leading to a fire. Such fires are characterized by their suddenness, rapid spread, and high destructiveness; if not extinguished promptly, they can cause equipment damage, power outages, and even trigger a chain reaction of accidents.

[0003] To this end, a utility model patent with patent authorization announcement number CN 216877660 U discloses a fire alarm and extinguishing device for switchgear, including a housing. The output shaft of the motor is fixedly connected to a lead screw via a coupling. Multiple sets of solenoid valves are fixedly installed on the top of the support plate. The solenoid valves are connected to the nozzles via connecting pipes. Temperature sensors corresponding to the solenoid valves are fixedly installed on the side of the fixed plate. Through the arrangement of the motor, lead screw, and nozzles, after a fire occurs inside the switchgear, the motor, lead screw, support plate, and fixed plate work together to rotate the output shaft of the motor, causing the lead screw to rotate. During the rotation of the lead screw, the position of the nozzles is moved through the support plate and fixed plate, thereby adjusting the position of the extinguishing mechanism. Through the arrangement of the motor, lead screw, and nozzles, the position of the extinguishing mechanism can be adjusted when extinguishing a fire inside the switchgear, thus enabling rapid extinguishing of the fire at the location where the fire occurs.

[0004] However, in actual use, fire extinguishing devices are large in size, which can easily occupy the installation space of electrical components inside the switch cabinet, making it difficult to install electrical components. Furthermore, they cannot respond quickly, which can easily cause the fire to spread. They also have low accuracy in judging whether a fire has occurred and are prone to misjudgment.

[0005] Therefore, it is necessary to further improve the fire alarm and extinguishing device for switchgear. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the existing defects and provide a switch cabinet fire extinguishing device that can respond quickly, is easy to install, can be folded and placed to reduce the space occupied inside the switch cabinet, can respond quickly to extinguish fire, prevent the spread of fire, improve the accuracy of fire detection, reduce misjudgment, and can effectively solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a switch cabinet fire extinguishing device capable of rapid response, comprising a fixed plate and a venturi tube. An mounting plate is provided on the upper surface of the fixed plate, and a folding plate is rotatably connected to the lower surface of the fixed plate via a hinge. The folding plate is connected to the mounting plate via a fixing assembly. Monitoring components are provided on the mounting plate and the folding plate. A telescopic assembly is provided on the front side of the folding plate, and the telescopic assembly is connected to the fixed plate. A rotating component is installed in a mounting hole at the lower part of the folding plate. A spraying component is installed on the front side of the rotating component via a fixing bracket. Symmetrically arranged fixing strips are installed on the rear side of the rotating component. The lower fixing strip is connected to the folding plate via a limiting assembly, and the upper fixing strip is connected to the folding plate via a telescopic assembly. The venturi tube is located inside the spraying component.

[0008] Preferably, the lower end of the front side of the fixing plate is provided with symmetrically arranged blocks.

[0009] Preferably, the telescopic component includes a connecting column, an electric push rod, and a hinge. There are two connecting columns, which are respectively installed on the fixed plate and the folding plate. The hinge is connected to the connecting column and is installed at both ends of the electric push rod. The input end of the electric push rod is electrically connected to the output end of an external controller.

[0010] Preferably, the monitoring component includes a flame detector, a temperature sensor, and a smoke sensor. The flame detector and the temperature sensor are mounted on the rear side of the lower surface of the mounting plate via a bracket, and the smoke sensor is located on the rear side of the folded plate. The output terminals of the flame detector, the temperature sensor, and the smoke sensor are all electrically connected to an external controller.

[0011] Preferably, the ejection assembly includes a flat fan-shaped nozzle, a bypass pipe, a main straight pipe, and a connector. The flat fan-shaped nozzle is installed at the lower end of the main straight pipe. The bypass pipe is connected to the outer side of the main straight pipe and is mounted on a fixed frame. The connector is located at the upper end of the main straight pipe. The venturi tube is located inside the main straight pipe and is coaxial with the main straight pipe. The length of the venturi tube is less than the distance between the two ends of the bypass pipe.

[0012] Preferably, the fixing component includes an electromagnet and an iron bar. The electromagnet is disposed in a groove opened at the lower end of the rear side of the fixing plate, and the iron bar is installed at the upper end of the rear side of the folding plate. The input end of the electromagnet is electrically connected to the output end of an external controller.

[0013] Preferably, the telescopic component two includes a hinge two, an electric push rod two, and a connecting bar. There are two connecting bars, which are respectively set on the folding plate and the fixed bar located on the upper side. The hinge two is connected to the connecting bar and is set at both ends of the electric push rod two. The input end of the electric push rod two is electrically connected to the output end of the external controller.

[0014] Preferably, the limiting component includes a limiting post and an arc-shaped limiting groove. The limiting post is disposed on the fixing strip located on the lower side, and the limiting post is disposed in the arc-shaped limiting groove, which is opened on the folding plate.

[0015] The working principle and usage principle of this utility model are as follows: the device is installed inside the switch cabinet through the mounting plate, and the connector is connected to the external fire extinguishing agent pipeline;

[0016] The flame detector can detect whether there is a flame inside the switch cabinet, the temperature sensor can sense the temperature inside the switch cabinet, and the smoke sensor can detect the smoke concentration inside the switch cabinet. If any two of the flame detector, temperature sensor, and smoke sensor detect an abnormality inside the switch cabinet, it is considered that a fire has occurred inside the switch cabinet.

[0017] When no fire occurs, the electric push rod is in the retracted state, and the folding plate and the fixed plate are at right angles. This state can reduce the space occupied by the device in the switch cabinet.

[0018] In the event of a fire, once the electric push rod extends, it ensures that the folding plate and the fixed plate are on the same vertical reference plane. When the electromagnet is energized, it generates a magnetic force, causing the iron bar to adhere to the electromagnet, thus increasing the stability of the folding plate.

[0019] By extending and retracting the electric push rod two, the rotating part can be driven to rotate through the fixed bar, and the rotating part can drive the rotation of the spraying assembly through the fixed frame, thereby adjusting the spraying angle of the extinguishing agent;

[0020] The flat, fan-shaped nozzle can increase the spray area of ​​the extinguishing agent. The extinguishing agent enters the bypass pipe and the main straight pipe. When the extinguishing agent passes through the Venturi tube in the main straight pipe, it is compressed and sprayed out. The rapidly sprayed extinguishing agent can drive the extinguishing agent near the lower end of the bypass pipe to spray out faster, thereby increasing the amount and speed of the extinguishing agent sprayed out, which can quickly cover the fire source for fire extinguishing.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] The flame detector can detect whether there is a flame inside the switch cabinet, the temperature sensor can sense the temperature inside the switch cabinet, and the smoke sensor can detect the smoke concentration inside the switch cabinet. If any two of the flame detector, temperature sensor, and smoke sensor detect an abnormality inside the switch cabinet, it is considered that a fire has occurred inside the switch cabinet, thus improving the accuracy of fire detection.

[0023] By extending and retracting the electric push rod two, the rotating part can be driven to rotate through the fixed bar, and the rotating part can drive the rotation of the spraying assembly through the fixed frame, thereby adjusting the spraying angle of the extinguishing agent;

[0024] The flat, fan-shaped nozzle can increase the spray area of ​​the extinguishing agent. The extinguishing agent enters the bypass pipe and the main straight pipe. When the extinguishing agent passes through the Venturi tube in the main straight pipe, it is compressed and sprayed out. The rapidly sprayed extinguishing agent can drive the extinguishing agent near the lower end of the bypass pipe to spray out faster, thereby increasing the amount and speed of the extinguishing agent sprayed out, which can quickly cover the fire source for fire extinguishing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a bottom view of the present invention;

[0027] Figure 3 This is an enlarged schematic diagram of part A of this utility model;

[0028] Figure 4 This is a schematic diagram of the rotating component of this utility model;

[0029] Figure 5 This is a schematic diagram of the installation position of the venturi tube of this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1. Fixing plate; 2. Stop block; 3. Folding plate; 4. Rotating component; 5. Telescopic assembly one; 501. Connecting column; 502. Electric push rod one; 503. Hinge one; 6. Mounting plate; 7. Monitoring assembly; 701. Flame detector; 702. Temperature sensor; 703. Smoke sensor; 8. Spray assembly; 801. Flat fan-shaped nozzle; 802. Bypass pipe; 803. Main straight pipe; 804. Connector; 9. Fixing assembly; 901. Electromagnet; 902. Iron bar; 10. Telescopic assembly two; 1001. Hinge two; 1002. Electric push rod two; 1003. Connecting strip; 11. Limiting assembly; 1101. Limiting column; 1102. Arc-shaped limiting groove; 12. Fixing strip; 13. Venturi tube; 14. Fixing frame. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of the embodiments of this application easier to understand, the embodiments of this application are further described below in conjunction with the figures and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of this application and are not intended to limit the embodiments of this application.

[0032] Please see Figure 1-5This utility model provides a technical solution: a switch cabinet fire extinguishing device with rapid response, including a fixed plate 1 and a venturi tube 13. The upper end face of the fixed plate 1 is provided with a mounting plate 6, and the lower end face of the fixed plate 1 is rotatably connected to a folding plate 3 via a hinge. The folding plate 3 is connected to the mounting plate 6 via a fixing component 9. The mounting plate 6 and the folding plate 3 are provided with a monitoring component 7. The front side of the folding plate 3 is provided with a telescopic component 5, and the telescopic component 5 is connected to the fixed plate 1.

[0033] Specifically, the mounting plate 6 can install the device inside the switch cabinet. When the telescopic component 5 is retracted, the folding plate 3 can rotate upward at the lower end of the fixed plate 1 via a hinge, thereby reducing the space occupied by the device inside the switch cabinet. The monitoring component 7 can monitor the inside of the switch cabinet and send a fire signal to the outside as soon as possible in case of fire.

[0034] A rotating component 4 is installed in the mounting hole at the bottom of the folding plate 3. A spraying component 8 is installed on the front side of the rotating component 4 via a fixing bracket 14. A symmetrically arranged fixing strip 12 is installed on the rear side of the rotating component 4. The fixing strip 12 located on the lower side is connected to the folding plate 3 via a limiting component 11, and the fixing strip 12 located on the upper side is connected to the folding plate 3 via a telescopic component 10. A venturi tube 13 is installed inside the spraying component 8.

[0035] Specifically, the venturi tube 13 can increase the spraying speed of the extinguishing agent of the spraying assembly 8, and the retraction of the telescopic assembly 2 10 can drive the rotating part 4 to rotate, thereby driving the rotation of the spraying assembly 8, and the angle of the spraying assembly 8 can be adjusted.

[0036] Furthermore, symmetrically arranged stop blocks 2 are provided at the lower end of the front side of the fixing plate 1.

[0037] Specifically, when the folding plate 3 rotates, it can contact the lower side of the stop block 2, and the stop block 2 limits the rotation angle of the folding plate 3.

[0038] Furthermore, the telescopic assembly 5 includes a connecting post 501, an electric push rod 502, and a hinge 503. There are two connecting posts 501, which are respectively installed on the fixed plate 1 and the folding plate 3. The hinge 503 is connected to the connecting post 501. The hinge 503 is installed at both ends of the electric push rod 502. The input end of the electric push rod 502 is electrically connected to the output end of the external controller.

[0039] Specifically, the two ends of hinge 503 are connected to connecting post 501 and electric push rod 502 respectively. Hinge 503 can ensure that electric push rod 502 can adjust its angle when it retracts. When electric push rod 502 retracts, it can drive the folding plate 3 to rotate upward at the lower end of fixed plate 1.

[0040] When no fire occurs, the electric push rod 502 is in the retracted state, and the folding plate 3 is at a right angle to the fixed plate 1. This state can reduce the space occupied by the device in the switch cabinet.

[0041] In the event of a fire, the electric push rod 502 extends to ensure that the folding plate 3 and the fixed plate 1 are on the same vertical reference plane, at which point the device is in working condition.

[0042] Furthermore, the monitoring component 7 includes a flame detector 701, a temperature sensor 702, and a smoke sensor 703. The flame detector 701 and the temperature sensor 702 are mounted on the rear side of the lower surface of the mounting plate 6 via brackets, and the smoke sensor 703 is located on the rear side of the folding plate 3. The output terminals of the flame detector 701, the temperature sensor 702, and the smoke sensor 703 are all electrically connected to an external controller.

[0043] Specifically, the flame detector 701 can detect whether there is a flame inside the switch cabinet, the temperature sensor 702 can sense the temperature inside the switch cabinet, and the smoke sensor 703 can detect the smoke concentration inside the switch cabinet. If any two of the flame detector 701, temperature sensor 702, and smoke sensor 703 detect an abnormality inside the switch cabinet, it is considered that a fire has occurred inside the switch cabinet, thus improving the accuracy of fire detection. When the folding plate 3 is in a non-fire state, the smoke sensor 703 is set in a horizontal state to ensure that the smoke sensor 703 can work normally.

[0044] Furthermore, the ejection assembly 8 includes a flat fan-shaped nozzle 801, a bypass pipe 802, a main straight pipe 803, and a connector 804. The flat fan-shaped nozzle 801 is installed at the lower end of the main straight pipe 803. The bypass pipe 802 is connected to the outer side of the main straight pipe 803 and is mounted on the fixing bracket 14. The connector 804 is located at the upper end of the main straight pipe 803. The venturi tube 13 is located inside the main straight pipe 803 and is coaxially arranged with the main straight pipe 803. The length of the venturi tube 13 is less than the distance between the two ends of the bypass pipe 802.

[0045] Specifically, the flat fan-shaped nozzle 801 can increase the spray area of ​​the extinguishing agent, and the connector 804 connects to the external extinguishing agent pipeline;

[0046] When a fire occurs, the extinguishing agent enters the bypass pipe 802 and the main straight pipe 803. The extinguishing agent is compressed and sprayed out when it passes through the Venturi tube 13 in the main straight pipe 803. The rapidly sprayed extinguishing agent can drive the extinguishing agent near the lower end of the bypass pipe 802 to spray out faster, thereby increasing the amount and speed of the extinguishing agent sprayed out, which can quickly cover the fire source to extinguish the fire.

[0047] Furthermore, the fixing component 9 includes an electromagnet 901 and an iron bar 902. The electromagnet 901 is disposed in a groove opened at the lower end of the rear side of the fixing plate 1, and the iron bar 902 is installed at the upper end of the rear side of the folding plate 3. The input end of the electromagnet 901 is electrically connected to the output end of an external controller.

[0048] Specifically, when the folding plate 3 is in a fire state, the electromagnet 901 is energized to generate attraction, causing the iron bar 902 to be attracted to the electromagnet 901, thereby increasing the stability of the folding plate 3.

[0049] Furthermore, the telescopic assembly 2 10 includes a hinge 2 1001, an electric push rod 2 1002, and a connecting bar 1003. There are two connecting bars 1003, which are respectively disposed on the folding plate 3 and the fixing bar 12 located on the upper side. The hinge 2 1001 is connected to the connecting bar 1003 and is disposed at both ends of the electric push rod 2 1002. The input end of the electric push rod 2 1002 is electrically connected to the output end of the external controller.

[0050] Specifically, the two ends of hinge 2 1001 are connected to electric push rod 2 1002 and connecting bar 1003 respectively. When electric push rod 2 1002 extends or retracts, the angle can be changed by hinge 2 1001. Through the extension or retraction of electric push rod 2 1002, the rotating part 4 can be driven to rotate through fixing bar 12. The rotating part 4 can drive the spraying assembly 8 to rotate through fixing frame 14, thereby adjusting the spraying angle of the extinguishing agent, which can quickly aim at the fire source for extinguishing.

[0051] Furthermore, the limiting component 11 includes a limiting post 1101 and an arc-shaped limiting groove 1102. The limiting post 1101 is disposed on the fixing strip 12 located on the lower side, and the limiting post 1101 is disposed in the arc-shaped limiting groove 1102, which is opened on the folding plate 3.

[0052] Specifically, when the rotating component 4 rotates, it drives the lower fixing strip 12 to rotate, thereby causing the limiting post 1101 to move within the arc-shaped limiting groove 1102. The range of movement of the limiting post 1101 within the arc-shaped limiting groove 1102 is the range of the rotating angle of the rotating component 4. The arc-shaped limiting groove 1102 should be opened on the lower right side of the rear side of the folding plate 3, and the limiting angle of the arc-shaped limiting groove 1102 should be less than 40° to prevent the rotation angle of the ejection component 8 from being too large and causing damage.

[0053] It is worth noting that: the flame detector 701 can be the HONEYWELL C7027A1049 model, the temperature sensor 702 can be the YFL-TA / TR600CM model from Infineon Technologies, the smoke sensor 703 can be the Siemens FC18-195 model, and the electric actuators 502 and 1002 can be Parker HMR series electric actuators, which can be used in high-temperature environments. The actuator stroke can be selected according to actual needs. The external extinguishing agent for this device can be carbon dioxide or thermal aerosol extinguishing agent.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A switchgear fire extinguishing device capable of rapid response, comprising a fixing plate (1) and a venturi tube (13), characterized in that: The upper end face of the fixed plate (1) is provided with an mounting plate (6), and the lower end face of the fixed plate (1) is rotatably connected to a folding plate (3) via a hinge. The folding plate (3) is connected to the mounting plate (6) via a fixing component (9). A monitoring component (7) is provided on the mounting plate (6) and the folding plate (3). A telescopic component (5) is provided on the front side of the folding plate (3). The telescopic component (5) is connected to the fixed plate (1). A rotating component (4) is installed in the mounting hole at the lower part of the folding plate (3). A spraying component (8) is installed on the front side of the rotating component (4) via a fixing bracket (14). A symmetrically arranged fixing strip (12) is installed on the rear side of the rotating component (4). The fixing strip (12) located on the lower side is connected to the folding plate (3) via a limiting component (11). The fixing strip (12) located on the upper side is connected to the folding plate (3) via a telescopic component (2) (10). A venturi tube (13) is provided inside the spraying component (8).

2. The switchgear fire extinguishing device with rapid response according to claim 1, characterized in that: The lower front side of the fixing plate (1) is provided with symmetrically arranged baffles (2).

3. The switchgear fire extinguishing device with rapid response according to claim 1, characterized in that: The telescopic component 1 (5) includes a connecting column (501), an electric push rod 1 (502), and a hinge 1 (503). There are two connecting columns (501), which are respectively set on the fixed plate (1) and the folding plate (3). The hinge 1 (503) is connected to the connecting column (501). The hinge 1 (503) is respectively set at both ends of the electric push rod 1 (502). The input end of the electric push rod 1 (502) is electrically connected to the output end of the external controller.

4. The switchgear fire extinguishing device with rapid response according to claim 1, characterized in that: The monitoring component (7) includes a flame detector (701), a temperature sensor (702), and a smoke sensor (703). The flame detector (701) and the temperature sensor (702) are mounted on the rear side of the lower surface of the mounting plate (6) by a bracket. The smoke sensor (703) is located on the rear side of the folding plate (3). The output terminals of the flame detector (701), the temperature sensor (702), and the smoke sensor (703) are all electrically connected to an external controller.

5. The switchgear fire extinguishing device with rapid response according to claim 1, characterized in that: The ejection assembly (8) includes a flat fan-shaped nozzle (801), a bypass pipe (802), a main straight pipe (803), and a connector (804). The flat fan-shaped nozzle (801) is installed at the lower end of the main straight pipe (803). The bypass pipe (802) is connected to the outer side of the main straight pipe (803) and is mounted on the fixing frame (14). The connector (804) is mounted at the upper end of the main straight pipe (803). The venturi tube (13) is mounted inside the main straight pipe (803) and is coaxial with the main straight pipe (803). The length of the venturi tube (13) is less than the distance between the two ends of the bypass pipe (802).

6. The switchgear fire extinguishing device with rapid response according to claim 1, characterized in that: The fixing component (9) includes an electromagnet (901) and an iron bar (902). The electromagnet (901) is set in a groove at the lower end of the rear side of the fixing plate (1), and the iron bar (902) is installed at the upper end of the rear side of the folding plate (3). The input end of the electromagnet (901) is electrically connected to the output end of the external controller.

7. The switchgear fire extinguishing device with rapid response according to claim 1, characterized in that: The telescopic component 2 (10) includes hinge 2 (1001), electric push rod 2 (1002) and connecting bar (1003). There are two connecting bars (1003), which are respectively set on the folding plate (3) and the fixed bar (12) located on the upper side. Hinges 2 (1001) are connected to connecting bars (1003) and are set at both ends of electric push rod 2 (1002). The input end of electric push rod 2 (1002) is electrically connected to the output end of an external controller.

8. The switchgear fire extinguishing device with rapid response according to claim 1, characterized in that: The limiting component (11) includes a limiting post (1101) and an arc-shaped limiting groove (1102). The limiting post (1101) is set on the fixing strip (12) located on the lower side, and the limiting post (1101) is set in the arc-shaped limiting groove (1102), which is opened on the folding plate (3).

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