Power distribution room high-voltage cabinet automatic fire extinguishing device based on Internet of Things

Abstract

The utility model relates to the technical field of power distribution rooms, and provides a power distribution room high-voltage cabinet automatic fire extinguishing device based on Internet of Things, which comprises a power distribution cabinet, and a plurality of fire suppression devices are fixedly connected to the bottom of the inner wall and the inner side wall of the power distribution cabinet respectively. A spraying mechanism for spraying the fire extinguishing agent released by the fire suppression device into the power distribution cabinet is arranged on the inner side wall of the power distribution cabinet; the spraying mechanism comprises a reciprocating assembly, the reciprocating assembly is arranged on the inner side wall of the power distribution cabinet, a mounting frame is arranged on one side of the reciprocating assembly, a spraying pipe assembly is arranged on the mounting frame, and an air supply pipe is arranged on the spraying pipe assembly. According to the automatic fire extinguishing device for the distribution room high-voltage cabinet based on the Internet of Things, the mounting frame and the spray pipe assembly are driven by the reciprocating assembly to reciprocate up and down in the vertical direction, so that a sprayed fire extinguishing agent can be quickly and comprehensively dispersed to each corner in the distribution room; the problems that fire extinguishing is insufficient and comprehensive and the fire extinguishing effect is poor in the prior art are solved.

Description

Technical Field

[0001] This utility model relates to the field of power distribution room technology, specifically to an automatic fire extinguishing device for high-voltage switchgear in power distribution rooms based on the Internet of Things. Background Technology

[0002] Currently, most coal mine substations in China have electrical fire hazards in their distribution rooms, which pose a significant threat to mine safety and cause substantial losses.

[0003] A search revealed an existing patent (publication number: CN214129996U) disclosing a fire extinguishing device for a power distribution cabinet, comprising a fire detection device, a processor, and a fire extinguishing device. The fire extinguishing device includes a dry powder fire extinguisher and a control mechanism for controlling the activation of the dry powder fire extinguisher. The control mechanism includes a motor, a winch, a first pull rope, and a first pulley. The winch is fixedly connected to the output shaft of the motor. One end of the first pull rope is wound around the winch, and the other end is fixedly connected to the handle of the dry powder fire extinguisher via the first pulley. A second pull rope is also provided on the winch, and the other end of the second pull rope is connected to the main switch button via the second pulley. This device can automatically shut off the main power supply and shake the dry powder fire extinguisher in the event of a fire, subsequently automatically activating the dry powder fire extinguisher to spray extinguishing material. The entire process requires no manual operation, significantly reducing the hazards caused by a fire in the power distribution cabinet.

[0004] However, the following problems were found in the implementation of the relevant technology: When the above device detects a fire in the distribution cabinet, it only relies on activating the dry powder fire extinguisher to spray the extinguishing agent into the distribution cabinet to extinguish the fire. However, the extinguishing agent is sprayed from only one nozzle of the dry powder fire extinguisher. The extinguishing agent cannot be quickly and comprehensively dispersed to all corners inside the distribution cabinet, which will result in insufficient and incomplete fire extinguishing and poor fire extinguishing effect. Utility Model Content

[0005] This invention proposes an automatic fire extinguishing device for high-voltage switchgear in power distribution rooms based on the Internet of Things, which solves the problems of insufficient and incomplete fire extinguishing and poor fire extinguishing effect in related technologies.

[0006] The technical solution of this utility model is as follows: An automatic fire extinguishing device for a high-voltage switchgear in a power distribution room based on the Internet of Things, including a power distribution cabinet, a plurality of fire suppression devices are fixedly connected to the bottom and inner side walls of the power distribution cabinet, an online environmental monitoring device is fixedly connected to the inner side walls of the power distribution cabinet, an environmental monitoring detector is fixedly connected to the inner side walls of the power distribution cabinet, and a spraying mechanism is provided on the inner side walls of the power distribution cabinet for spraying the fire extinguishing agent released by the fire suppression devices into the interior of the power distribution cabinet;

[0007] The ejection mechanism includes a reciprocating assembly, which is disposed on the inner wall of the power distribution cabinet. A mounting bracket is provided on one side of the reciprocating assembly, and a nozzle assembly is disposed on the mounting bracket. An air supply pipe is disposed on the nozzle assembly.

[0008] Preferably, the reciprocating assembly includes a reciprocating lead screw and a motor. The reciprocating lead screw is rotatably connected to the inner wall of the distribution cabinet, the motor is fixedly connected to the upper end of the distribution cabinet, and the output end of the motor is fixedly connected to the upper end of the reciprocating lead screw. A moving block is threaded onto the reciprocating lead screw, and the mounting bracket is fixedly connected to one end of the moving block. The other end of the moving block is slidably disposed on the inner wall of the distribution cabinet through a sliding mechanism.

[0009] Preferably, the sliding mechanism includes a sliding groove and a slider. The sliding groove is formed on the inner side wall of the power distribution cabinet, and the slider is fixedly connected to the other end of the moving block and is slidably disposed in the sliding groove.

[0010] Preferably, the nozzle assembly includes a first pipe, which is fixedly connected to the mounting bracket. A plurality of first nozzles are fixedly connected to the first pipe at equal intervals. A second pipe is fixedly connected to both ends of the first pipe. A plurality of second nozzles are fixedly connected to the two second pipes at equal intervals. One end of the air supply pipe is fixedly connected to the first pipe.

[0011] Preferably, the other end of the gas supply pipe is fixedly connected to one of the fire suppression devices, and the gas supply pipe is a retractable flexible hose.

[0012] Preferably, the mounting bracket has a U-shaped structure, and openings for through-installation of the first pipe are provided on both sides of the mounting bracket.

[0013] Preferably, the two second pipes are inclined toward the two sides of the inner wall of the distribution cabinet.

[0014] Preferably, several fire suppression devices are connected in series via bridging heat-sensing fire detection harnesses.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] In this invention, by utilizing a heat-sensing fire detection harness pre-installed in the protected area, when the temperature of the protected area rises to 175℃±10℃, or when an open flame is generated, the heat-sensing fire detection harness senses and sends an automatic start signal to the fire suppression device (passive), thereby enabling the automatic activation of the fire suppression device and releasing the extinguishing medium to extinguish the fire. After the fire suppression device is activated and releases the extinguishing medium, it outputs a switch-type activation feedback signal to realize the device activation feedback function. At the same time, after the fire suppression device is activated, it releases a large amount of extinguishing agent. The fire suppression device, which is connected to the gas supply pipe, delivers the extinguishing agent into the nozzle assembly through the gas supply pipe. Simultaneously, the reciprocating assembly drives the mounting bracket and nozzle assembly to move up and down vertically. The nozzle assembly then sprays the extinguishing agent thoroughly and comprehensively into the interior of the distribution cabinet along the inner wall of the distribution cabinet. This allows the sprayed extinguishing agent to be quickly and comprehensively dispersed to all corners inside the distribution cabinet, making the fire extinguishing process more thorough and comprehensive, improving the fire extinguishing effect, and solving the problems of insufficient fire extinguishing and poor fire extinguishing effect in related technologies. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the external structure of an automatic fire extinguishing device for a high-voltage switchgear in a power distribution room based on the Internet of Things, as proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of an automatic fire extinguishing device for a high-voltage switchgear in a power distribution room based on the Internet of Things, as proposed in this utility model.

[0020] Figure 3 This utility model presents a partial structural schematic diagram of the spray mechanism of an automatic fire extinguishing device for a high-voltage switchgear in a power distribution room based on the Internet of Things.

[0021] Figure 4 for Figure 2 Enlarged schematic diagram of part A in the diagram;

[0022] In the diagram: 1. Distribution cabinet; 2. Fire suppression device; 3. Heat-sensing fire detection harness; 4. Online environmental monitoring device; 5. Environmental monitoring detector; 6. Spraying mechanism; 61. Reciprocating screw; 62. Motor; 63. Moving block; 64. Mounting bracket; 65. Nozzle assembly; 651. First pipe; 652. First nozzle; 653. Second pipe; 654. Second nozzle; 66. Air supply pipe; 67. Slide groove; 68. Sliding block. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a technical solution: an automatic fire extinguishing device for a high-voltage switchgear in a power distribution room based on the Internet of Things, including a power distribution cabinet 1. Several fire suppression devices 2 are fixedly connected to the bottom and inner side walls of the power distribution cabinet 1. The several fire suppression devices 2 are connected in series through a bridging heat-sensing fire detection harness 3. The inner wall of the power distribution cabinet 1 is also fixedly installed with its own or additional heat-sensing fire detection harness 3. An online environmental monitoring device 4 is fixedly connected to the inner side wall of the power distribution cabinet 1. An environmental monitoring detector 5 is fixedly connected to the inner side wall of the power distribution cabinet 1. A spraying mechanism 6 is provided on the inner side wall of the power distribution cabinet 1 for spraying the extinguishing agent released by the fire suppression devices 2 into the interior of the power distribution cabinet 1.

[0025] The spraying mechanism 6 includes a reciprocating assembly, which is installed on the inner wall of the distribution cabinet 1. A mounting bracket 64 is provided on one side of the reciprocating assembly, and a nozzle assembly 65 is provided on the mounting bracket 64. An air supply pipe 66 is provided on the nozzle assembly 65, and the air supply pipe 66 is connected to one of the fire suppression devices 2. The air supply pipe 66 is a retractable flexible hose.

[0026] In the above-mentioned fire suppression device 2, liquid perfluorohexanone (FK5112) extinguishing agent and a new type of solid gas-generating agent (CQJ-A508) extinguishing agent are mainly used as composite extinguishing agents. By adopting auxiliary catalysis and synergistic extinguishing methods, the optimal extinguishing effect of gas-liquid phase coexistence is achieved. After the fire suppression device 2 is activated, during the extinguishing process, the gas-generating agent continuously generates driving gas, while catalyzing the vaporization of perfluorohexanone (heat of vaporization is 88kJ / kg), promoting the release of perfluorohexanone in gaseous state into the protected area, achieving rapid extinguishing and suppression of open flames through physical cooling and chemical extinguishing action. In the early stage of the fire suppression process, physical cooling is the main effect. Secondly, the chemical molecular bond breaking of perfluorohexanone absorbs heat (500℃), combined with the chemical action of interrupting the combustion chain reaction, to achieve efficient and rapid suppression of open flames under the "dual action". After the open flame is extinguished, the remaining gaseous perfluorohexanone can continue to exist in the closed space of the protected area in a total flooding manner for a long time, achieving the effect of reducing the local oxygen concentration and suppressing reignition for a long time. After the fire suppression device 2 is activated, the fire extinguishing medium generator inside reacts to generate a large amount of smoke-like fire extinguishing medium. The effective components in the fire extinguishing process react with the active groups in the combustion, repeatedly consuming a large amount of active groups, reducing combustion free radicals, and efficiently absorbing and neutralizing combustion free radicals in the flame, thereby achieving the effect of chemical suppression and fire extinguishing.

[0027] In the event of a fire, the heat-sensing fire detection harness 3, which is pre-installed in the protected area, will automatically activate the fire suppression device 2 (passive) when the temperature in the protected area rises to 175℃±10℃ or an open flame is generated. This will release the extinguishing medium to extinguish the fire. After the fire suppression device 2 is activated and releases the extinguishing medium, it outputs a switch-type activation feedback signal to realize the device activation feedback function. At the same time, after the fire suppression device 2 is activated, it releases a large amount of extinguishing agent. The fire suppression device 2, which is connected to the gas supply pipe 66, delivers the extinguishing agent into the nozzle assembly 65 through the gas supply pipe 66. At the same time, the reciprocating assembly drives the mounting bracket 64 and the nozzle assembly 65 to move up and down in the vertical direction. The nozzle assembly 65 will then spray the extinguishing agent into the interior of the distribution cabinet 1 in a reciprocating motion along the inner wall of the distribution cabinet 1, so that the sprayed extinguishing agent can be quickly and comprehensively dispersed to all corners inside the distribution cabinet 1. This makes the fire extinguishing process more thorough and comprehensive, improves the fire extinguishing effect, and solves the problems of insufficient fire extinguishing and poor fire extinguishing effect in related technologies.

[0028] See Figure 2 , Figure 3 and Figure 4 The reciprocating assembly includes a reciprocating lead screw 61 and a motor 62. The reciprocating lead screw 61 is rotatably connected to the inner wall of the distribution cabinet 1, and the motor 62 is fixedly connected to the upper end of the distribution cabinet 1. The output end of the motor 62 is fixedly connected to the upper end of the reciprocating lead screw 61. A moving block 63 is threaded onto the reciprocating lead screw 61, and a mounting bracket 64 is fixedly connected to one end of the moving block 63. The other end of the moving block 63 is slidably mounted on the inner wall of the distribution cabinet 1 through a sliding mechanism.

[0029] The sliding mechanism includes a slide groove 67 and a slider 68. The slide groove 67 is formed on the inner side wall of the power distribution cabinet 1, and the slider 68 is fixedly connected to the other end of the moving block 63, and the slider 68 is slidably disposed in the slide groove 67.

[0030] By starting the motor 62, the output end of the motor 62 will drive the reciprocating screw 61 to rotate. The reciprocating screw 61 will drive the moving block 63 to move up and down in the vertical direction during rotation. The moving block 63 will drive the mounting bracket 64 to move up and down in the vertical direction.

[0031] See Figure 2 and Figure 3The nozzle assembly 65 includes a first pipe 651, which is fixedly connected to a mounting bracket 64. The mounting bracket 64 has a U-shaped structure and openings on both sides for through-installation of the first pipe 651. Several first nozzles 652 are fixedly connected to the first pipe 651 at equal intervals. Second pipes 653 are fixedly connected to both ends of the first pipe 651. Several second nozzles 654 are fixedly connected to the two second pipes 653 at equal intervals. One end of the air supply pipe 66 is fixedly connected to the first pipe 651, and the other end is fixedly connected to one of the fire suppression devices 2. The air supply pipe 66 is a flexible hose. By adopting a flexible hose design, the air supply pipe 66 can adapt to the up-and-down reciprocating motion of the first pipe 651 and the two second pipes 653, ensuring the continuous and stable delivery of extinguishing agent from the air supply pipe 66 to the first pipe 651 and the two second pipes 653.

[0032] The two second pipes 653 are inclined toward the two sides of the inner wall of the distribution cabinet 1, which allows the two second pipes 653 to spray fire extinguishing agent toward the two sides of the inner wall of the distribution cabinet 1, thereby further improving the sufficiency and effect of fire extinguishing.

[0033] The working principle and usage process of this utility model are as follows: In the event of a fire, the heat-sensing fire detection harness 3, which is pre-installed in the protected area, detects when the temperature in the protected area rises to 175℃±10℃ or an open flame is generated. This triggers an automatic activation signal to the fire suppression device 2 (passive), enabling the device to automatically activate and release extinguishing agents. After the fire suppression device 2 activates and releases the extinguishing agents, it outputs a switch-type activation feedback signal to provide feedback. Simultaneously, the fire suppression device 2 releases a large amount of extinguishing agent upon activation. Connected to the gas supply pipe 66, the fire suppression device 2 delivers the extinguishing agent to the first pipe 651 and two second pipes 653 via the gas supply pipe 66. Simultaneously, the motor 62 is activated, and its output drives the reciprocating screw 61 to rotate. During this rotation, the reciprocating screw 61 drives the moving block 63 to move vertically upwards. The reciprocating motion of the moving block 63 causes the mounting frame 64 to move vertically up and down, which in turn causes the first pipe 651 and the two second pipes 653 to move vertically up and down. The first pipe 651 and the two second pipes 653 then reciprocate up and down along the inner wall of the distribution cabinet 1, spraying the extinguishing agent thoroughly and completely into the distribution cabinet 1. This allows the sprayed extinguishing agent to be quickly and completely dispersed to every corner inside the distribution cabinet 1, thus making the fire extinguishing process more thorough and comprehensive, and improving the fire extinguishing effect.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An automatic fire extinguishing device for a high-voltage switchgear in a power distribution room based on the Internet of Things, comprising a power distribution switchgear (1), characterized in that: Several fire suppression devices (2) are fixedly connected to the bottom and inner side walls of the power distribution cabinet (1), an online environmental monitoring device (4) is fixedly connected to the inner side wall of the power distribution cabinet (1), an environmental monitoring detector (5) is fixedly connected to the inner side wall of the power distribution cabinet (1), and a spraying mechanism (6) is provided on the inner side wall of the power distribution cabinet (1) for spraying the extinguishing agent released by the fire suppression device (2) into the interior of the power distribution cabinet (1). The ejection mechanism (6) includes a reciprocating assembly, which is disposed on the inner wall of the power distribution cabinet (1). A mounting bracket (64) is provided on one side of the reciprocating assembly, and a nozzle assembly (65) is provided on the mounting bracket (64). An air supply pipe (66) is provided on the nozzle assembly (65).

2. The automatic fire extinguishing device for high-voltage switchgear in a power distribution room based on the Internet of Things as described in claim 1, characterized in that: The reciprocating assembly includes a reciprocating lead screw (61) and a motor (62). The reciprocating lead screw (61) is rotatably connected to the inner wall of the distribution cabinet (1). The motor (62) is fixedly connected to the upper end of the distribution cabinet (1), and the output end of the motor (62) is fixedly connected to the upper end of the reciprocating lead screw (61). A moving block (63) is threaded onto the reciprocating lead screw (61), and the mounting bracket (64) is fixedly connected to one end of the moving block (63). The other end of the moving block (63) is slidably mounted on the inner wall of the distribution cabinet (1) through a sliding mechanism.

3. The automatic fire extinguishing device for high-voltage switchgear in a power distribution room based on the Internet of Things as described in claim 2, characterized in that: The sliding mechanism includes a slide groove (67) and a slider (68). The slide groove (67) is opened on the inner side wall of the power distribution cabinet (1). The slider (68) is fixedly connected to the other end of the moving block (63) and the slider (68) is slidably disposed in the slide groove (67).

4. The automatic fire extinguishing device for high-voltage switchgear in a power distribution room based on the Internet of Things as described in claim 1, characterized in that: The nozzle assembly (65) includes a first pipe (651), which is fixedly connected to the mounting bracket (64). A plurality of first nozzles (652) are fixedly connected at equal intervals on the first pipe (651). A second pipe (653) is fixedly connected to both ends of the first pipe (651). A plurality of second nozzles (654) are fixedly connected to the two second pipes (653) at equal intervals. One end of the air supply pipe (66) is fixedly connected to the first pipe (651).

5. The automatic fire extinguishing device for high-voltage switchgear in a power distribution room based on the Internet of Things as described in claim 4, characterized in that: The other end of the gas supply pipe (66) is fixedly connected to one of the fire suppression devices (2), and the gas supply pipe (66) is a retractable hose.

6. The automatic fire extinguishing device for high-voltage switchgear in a power distribution room based on the Internet of Things as described in claim 4, characterized in that: The mounting bracket (64) has a U-shaped structure, and openings for through-installation of the first pipe (651) are provided on both sides of the mounting bracket (64).

7. The automatic fire extinguishing device for high-voltage switchgear in a power distribution room based on the Internet of Things as described in claim 4, characterized in that: The two second pipes (653) are respectively inclined toward the inner wall of the distribution cabinet (1).

8. The automatic fire extinguishing device for high-voltage switchgear in a power distribution room based on the Internet of Things as described in claim 1, characterized in that: Several fire suppression devices (2) are connected in series via bridging heat-sensing fire detection harnesses (3).

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