A self-triggering fire protection system for energy storage devices

Abstract

The application discloses a self-triggering fire extinguishing system for an energy storage device, and relates to the technical field of fire extinguishing systems, which comprises an energy storage cabinet, a plugging device and a chassis device; a fire extinguishing tank is fixed on the outer wall of the energy storage cabinet, the gas outlet of the fire extinguishing tank is communicated with a main pipeline, and a plurality of vertically arranged fire extinguishing branch pipelines are communicated with the main pipeline; the fire extinguishing branch pipelines are fixed on the side wall of the energy storage cabinet, and one end of the fire extinguishing branch pipelines, which is away from the main pipeline, is fixedly connected with the plugging device; the plugging device comprises an outer pipe, a plug and a heating wire; the outer pipe is in a circular tube shape, and the plug is located inside the outer pipe; the plug is in a whole cylindrical shape, and the top end of the plug is in a smooth semispherical shape; paraffin is filled between the plug and the outer pipe in an initial state; when the outer pipe vertically sprays fire extinguishing gas downward, the fire extinguishing gas has a relatively large coverage area, and the energy storage cabinet can be timely extinguished when a battery spontaneous combustion phenomenon occurs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire fighting systems, and in particular to a self-triggering fire fighting system for energy storage devices. BACKGROUND

[0002] Lithium batteries have been increasingly applied due to their high working voltage, small volume, light weight, high energy, no memory effect, no pollution, small self-discharge, long cycle life, and no pollution. However, due to the structural characteristics and high energy density materials used, lithium batteries are prone to explosion and fire during use. The fire of lithium batteries is the release of internal energy. When a lithium battery experiences thermal runaway, it will spew out a mixture of high-temperature gas and particles. These gases are flammable and can easily cause fires. The high-temperature spew and the flames generated by the spew can heat the surrounding batteries, which may trigger a large explosion.

[0003] A self-triggering fire fighting system for energy storage devices is disclosed in Chinese Patent No. CN112206445B. The system includes a sampling pipe and a fire extinguishing pipe arranged on the top of an energy storage station container. The sampling pipe is connected to a heat release ion detector arranged outside the energy storage station container. The heat release ion detector is electrically connected to a controller. The fire extinguishing pipe is connected to a fire extinguishing tank arranged on the top outside the energy storage station container. The fire extinguishing pipe is provided with a self-triggering fire fighting nozzle. The controller is electrically connected to the circuit breaker of the energy storage station. This improves the sensitivity of the container to smoke and can automatically trigger the fire extinguishing device when a fire occurs, allowing for early fire extinguishing.

[0004] However, the fire extinguishing pipe in the above-mentioned fire fighting system sprays fire extinguishing gas vertically downward, resulting in a small coverage area of the sprayed fire extinguishing gas. When the energy storage cabinet experiences battery self-ignition, the fire extinguishing may not be timely. SUMMARY

[0005] The present application provides a self-triggering fire fighting system for energy storage devices, which solves the technical problem of small coverage area of the sprayed fire extinguishing gas when the fire extinguishing pipe sprays fire extinguishing gas vertically downward. When the energy storage cabinet experiences battery self-ignition, the fire extinguishing is more timely.

[0006] The application provides a self-triggering fire extinguishing system for an energy storage device, which comprises an energy storage cabinet, a plugging device and a chassis device; the energy storage cabinet is a cabinet body for accommodating energy storage batteries in an electric power system, and a terminal is fixed on the outer wall of the energy storage cabinet; a fire extinguishing tank is fixed on the outer wall of the energy storage cabinet, and a fire extinguishing gas is stored in the fire extinguishing tank; the gas outlet of the fire extinguishing tank is communicated with a main pipeline; the main pipeline is horizontally fixed on the upper end of the energy storage cabinet, and a plurality of vertically arranged fire extinguishing branch pipelines are communicated with the main pipeline; the fire extinguishing branch pipelines are fixed on the side wall of the energy storage cabinet, and one end of the fire extinguishing branch pipelines away from the main pipeline is fixedly connected with the plugging device; the plugging device comprises an outer pipe, a plug and a heating wire; the outer pipe is a circular pipe, and the plug is located in the outer pipe; the heating wire is spirally fixed on the outer wall of the outer pipe; the plug is a whole cylindrical body, and the top end of the plug is a smooth semispherical body; the height of the outer pipe is not greater than the height of the plug, and paraffin is filled between the plug and the outer pipe in an initial state; and the bottom end of the outer pipe is fixedly connected with the chassis device.

[0007] Further, the terminal is electrically connected with a plurality of temperature sensing cables and a plurality of electric fire heads, and the temperature sensing cables and the electric fire heads are one-to-one corresponding; the temperature sensing cables are laid on the inner side wall of the energy storage cabinet, a DC 24V signal is connected into a loop through the temperature sensing cables and the electric fire heads, the temperature sensing cables are open in a normal state, and the electric fire heads are in a pass state; when the temperature sensing cables are closed at a temperature, a pass is formed, the electric fire heads are instantaneously detonated to trigger the action of the selection valve, and the loop is disconnected at the same time; the terminal detects a point between the temperature sensing cables and the electric fire heads, and the terminal can immediately detect a 24V signal after the temperature sensing cables are closed at a temperature, and alarm information is triggered at this time.

[0008] Further, the chassis device comprises a plurality of vertically arranged guide rods and a horizontally arranged bearing frame; the length of the guide rod is two-thirds of the length of the outer pipe; the top end of the guide rod is fixed on the outer wall of the bottom end of the outer pipe, and the bottom end of the guide rod is fixedly connected with the bearing frame, so that the plug slides out of the outer pipe and falls on the bearing frame along the guide rod.

[0009] Further, the plug is hollow inside, and the inside space is a medium cavity; a plurality of liquid outlets one are uniformly arranged on the side wall of the shell of the plug; the medium cavity is filled with paraffin; and the bottom of the plug is provided with a supplementary valve one.

[0010] Further, the plugging device further comprises an inner pipe, the inner pipe is sleeved in the outer pipe, the inner pipe is a circular pipe, the top end of the inner pipe is fixedly connected with the inner wall of the top end of the outer pipe, the bottom end of the inner pipe is fixedly connected with the inner wall of the bottom end of the outer pipe, and the plug is located in the inner pipe; the space between the inner pipe and the outer pipe is an intermediate cavity, liquid outlets two are uniformly arranged on the side wall of the inner pipe, and the intermediate cavity is filled with paraffin; the inner diameter of the inner pipe is equal to the outer diameter of the plug in an initial state; the side wall of the outer pipe is provided with a supplementary valve two; and the material of the inner pipe is high-temperature-resistant silica gel.

[0011] Further, the plugging device further comprises an extrusion body, an air inlet pipe and an extrusion balloon; the extrusion body is located in the medium cavity, and in the initial state, the extrusion body is a vertical hollow cylinder, the top end of the extrusion body is fixedly connected with the inner wall of the top end of the shell, and the bottom end of the extrusion body is fixedly connected with the inner wall of the bottom end of the shell; the outer wall of the bottom end of the shell is fixedly provided with the air inlet pipe, the air inlet pipe is in communication with the internal space of the extrusion body; the end of the air inlet pipe away from the extrusion body is fixedly connected with the extrusion balloon, and the internal space of the air inlet pipe is in communication with the internal space of the extrusion balloon; the end of the extrusion balloon away from the air inlet pipe is provided with a one-way air inlet valve; the end of the air inlet pipe close to the extrusion balloon is provided with a controllable one-way valve, and the controllable one-way valve is a one-way valve with a deflation function.

[0012] Further, the end of the air inlet pipe close to the extrusion balloon is fixed on the bottom surface of the bearing frame; the materials of the extrusion body, the air inlet pipe and the extrusion balloon are high-temperature-resistant silica gel, and the length of the air inlet pipe is not less than the length of the guide rod.

[0013] Further, the material of the shell is high-temperature-resistant silica gel, and the wall thickness of the shell is 3-5 cm; the plugging device further comprises a ring-shaped magnet one and a ring-shaped magnet two; the ring-shaped magnet one and the ring-shaped magnet two are both horizontally arranged ring-shaped blocks, the ring-shaped magnet one is fixedly arranged on the upper end of the internal space of the shell, the ring-shaped magnet two is fixedly arranged on the bottom of the shell, and the ring-shaped magnet one and the ring-shaped magnet two are both sleeved outside the extrusion body; in the initial state, the inner diameters of the ring-shaped magnet one and the ring-shaped magnet two are both greater than the diameter of the extrusion body, and the ring-shaped magnet one and the ring-shaped magnet two repel each other; the ring-shaped magnet two is a direct-current electromagnet.

[0014] Further, the outer pipe comprises an outer hose and an outer straight pipe; the outer hose is the upper end part of the outer pipe, the top end of the outer hose is fixedly connected with the fire extinguishing branch, and the bottom end of the outer hose is fixedly connected with the top end of the outer straight pipe; the outer straight pipe is the lower end part of the outer pipe, and the bottom end of the outer straight pipe is fixedly connected with the bottom frame device; the length of the outer hose is 5-10 cm, and the material of the outer hose is high-temperature-resistant silica gel; the heating wire is spirally fixed on the outer straight pipe.

[0015] Further, the material of the bottom frame device is iron; the energy storage cabinet is fixedly provided with an electromagnet block one and an electromagnet block two, the electromagnet block one and the electromagnet block two are both the same number as the plugging devices and one-to-one corresponding; the electromagnet block one and the electromagnet block two are respectively fixed on the positions of the energy storage cabinet on the two sides of the corresponding plugging devices, and the electromagnet block one and the electromagnet block two are both alternating-current electromagnets.

[0016] One or more technical solutions provided in the present application have at least the following technical effects or advantages:

[0017] The application discloses a self-triggering fire extinguishing system for an energy storage device, which comprises a sealing device and a chassis device; a fire extinguishing tank is fixed on the outer wall of an energy storage cabinet, the gas outlet of the fire extinguishing tank is communicated with a main pipeline, and a plurality of vertically arranged fire extinguishing branch pipelines are communicated with the main pipeline; the fire extinguishing branch pipelines are fixed on the side wall of the energy storage cabinet, and one end of the fire extinguishing branch pipelines away from the main pipeline is fixedly connected with the sealing device; the sealing device comprises an outer pipe, a plug and a heating wire; the outer pipe is in a circular tube shape, and the plug is located in the outer pipe; the plug is in a whole cylindrical shape, and the top end of the plug is in a smooth semispherical shape; paraffin is filled between the plug and the outer pipe in an initial state; the technical problem that the covering area of the sprayed fire extinguishing gas is small when the fire extinguishing pipeline vertically sprays the fire extinguishing gas downward and the fire extinguishing is not timely enough when the energy storage cabinet is in a battery spontaneous combustion phenomenon is effectively solved; and the technical effect that the covering area of the sprayed fire extinguishing gas is large when the outer pipe vertically sprays the fire extinguishing gas downward and the fire extinguishing is relatively timely when the energy storage cabinet is in a battery spontaneous combustion phenomenon is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the self-triggering fire extinguishing system for the energy storage device.

[0019] Figure 2 It is a temperature sensing cable connection schematic view of the self-triggering fire extinguishing system for the energy storage device.

[0020] Figure 3 It is a sealing device schematic view of the self-triggering fire extinguishing system for the energy storage device.

[0021] Figure 4 It is a bearing frame bottom view schematic view of the self-triggering fire extinguishing system for the energy storage device.

[0022] Figure 5 It is a plug moving after schematic view of the self-triggering fire extinguishing system for the energy storage device.

[0023] Figure 6 It is a plug schematic view of the self-triggering fire extinguishing system for the energy storage device.

[0024] Figure 7 It is an intermediate cavity schematic view of the self-triggering fire extinguishing system for the energy storage device.

[0025] Figure 8 It is an extrusion body position schematic view of the self-triggering fire extinguishing system for the energy storage device.

[0026] Figure 9 It is an extrusion body expanding after schematic view of the self-triggering fire extinguishing system for the energy storage device.

[0027] Figure 10Extrusion balloon structure diagram of the self-triggering fire extinguishing system for energy storage device of the present application;

[0028] Figure 11 Ring magnet position diagram of the self-triggering fire extinguishing system for energy storage device of the present application;

[0029] Figure 12 Initial state plug height diagram of the self-triggering fire extinguishing system for energy storage device of the present application;

[0030] Figure 13 Temperature rise plug height diagram of the self-triggering fire extinguishing system for energy storage device of the present application;

[0031] Figure 14 Outer tube structure diagram of the self-triggering fire extinguishing system for energy storage device of the present application;

[0032] Figure 15 Electromagnet block position diagram of the self-triggering fire extinguishing system for energy storage device of the present application;

[0033] Figure 16 Electromagnet block start diagram of the self-triggering fire extinguishing system for energy storage device of the present application.

[0034] In the figure:

[0035] Energy storage cabinet 100, terminal 110, sampling pipe 120, fire extinguishing tank 130, main pipeline 140, fire extinguishing branch pipeline 150, electromagnet block one 160, electromagnet block two 170;

[0036] Blocking device 200, outer tube 210, outer hose 211, outer straight tube 212, plug 220, shell 221, medium cavity 222, supplementary valve one 223, heating wire 230, inner tube 240, intermediate cavity 241, supplementary valve two 242, extrusion body 250, air inlet pipe 260, controllable one-way valve 261, extrusion balloon 270, one-way air inlet valve 271, ring magnet one 280, ring magnet two 290;

[0037] Chassis device 300, guide rod 310, bearing frame 320. DETAILED DESCRIPTION

[0038] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, in which preferred embodiments of the present application are shown; however, the present application can be realized in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present application to those skilled in the art.

[0039] It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms used herein are for illustrative purposes only and are not intended to be limiting.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0041] Embodiment one

[0042] As shown in Figure 1 , the self-triggering fire extinguishing system for energy storage device of the application comprises an energy storage cabinet 100, a plugging device 200, a chassis device 300, a power assembly and a control unit; the energy storage cabinet 100 is a cabinet body for accommodating energy storage batteries in an electric power system, a terminal 110 is fixed on the outer wall of the energy storage cabinet 100, a heat release ion detector is arranged inside the terminal 110, the heat release ion detector is connected with a plurality of sampling tubes 120 laid on the outer wall of the energy storage cabinet 100, which is prior art and will not be described here; a fire extinguishing tank 130 is fixed on the outer wall of the energy storage cabinet 100, the fire extinguishing tank 130 stores fire-fighting gas inside; the gas outlet of the fire extinguishing tank 130 is communicated with a main pipeline 140; the main pipeline 140 is horizontally fixed on the upper end of the energy storage cabinet 100, and a plurality of vertical fire extinguishing branch pipelines 150 are communicated on the main pipeline 140.

[0043] As shown in Figure 3 , Figure 4 and Figure 5As shown, the fire extinguishing branch 150 is fixed to the side wall of the energy storage cabinet 100, and the end of the fire extinguishing branch 150 away from the main branch 140 is fixedly connected to the sealing device 200; the sealing device 200 includes an outer tube 210, a plug 220, and a heating wire 230; the outer tube 210 is cylindrical, and the plug 220 is located inside the outer tube 210; the heating wire 230 is spirally fixed to the outer wall of the outer tube 210, and the heating wire 230 is electrically connected to the terminal 110, which is existing technology and will not be described in detail here; the plug 220 is cylindrical in shape, and the top of the plug 220 is a smooth hemispherical shape; the outer tube The height of 210 is not greater than the height of the plug 220. In the initial state, the space between the plug 220 and the outer tube 210 is filled with paraffin wax. The bottom end of the outer tube 210 is fixedly connected to the base frame device 300. The base frame device 300 includes multiple vertically arranged guide rods 310 and a horizontally arranged support frame 320. The length of the guide rod 310 is three-half the length of the outer tube 210. The top end of the guide rod 310 is fixed to the outer wall of the bottom end of the outer tube 210, and the bottom end of the guide rod 310 is fixedly connected to the support frame 320, so that after the plug 220 slides out of the outer tube 210, it falls onto the support frame 320 along the guide rod 310.

[0044] Preferably, the support frame 320 is a cross-shaped frame, and there are four guide rods 310, which are respectively fixed on the four end arms of the support frame 320.

[0045] Furthermore, such as Figure 2 As shown, the terminal 110 is electrically connected to multiple temperature-sensing cables and multiple electric ignition heads (not shown in the figure), with each temperature-sensing cable and electric ignition head corresponding to the other. The temperature-sensing cables are laid on the inner wall of the energy storage cabinet 100. The DC24V signal is connected to the electric ignition heads to form a circuit. Under normal conditions, the temperature-sensing cables are open and the electric ignition heads are closed. When the temperature-sensing cables reach the required temperature and close to form a circuit, the electric ignition heads instantly explode and trigger the selector valve to operate, while the circuit is broken. The terminal 110 takes a detection point between the temperature-sensing cables and the electric ignition heads to detect the voltage information to ground at that point. When the temperature-sensing cables reach the required temperature and close, the terminal 110 can immediately detect the 24V signal and trigger an alarm.

[0046] Preferably, an electronic barometer is installed between the main pipeline 140 and the fire extinguishing tank 130. The electronic barometer is electrically connected to the terminal 110. The function of the electronic barometer is to monitor the air pressure inside the fire extinguishing tank 130. When the detected air pressure is insufficient, the terminal 110 sends a message to the safety officer to notify the safety officer to replenish the fire extinguishing materials in time.

[0047] Preferably, the fire extinguishing branch 150 is equipped with an electrically controlled branch valve, which is initially in the open state.

[0048] The power assembly is used for providing power for the operation of the fire extinguishing system, preferably AC power or battery; the control unit is used for controlling the coordinated operation of the components of the fire extinguishing system, preferably programmable logic controller; all are prior art, and will not be described here.

[0049] The self-triggering fire extinguishing system for energy storage device in the embodiment of the application in actual operation, the steps are as follows:

[0050] S1: When the terminal 110 identifies the fire through the temperature sensing cable or the heat release ion detector, the alarm information is sent to the outside world, and the heating wire 230 is controlled to heat the paraffin between the outer pipe 210 and the plug 220, under the pressure of the fire extinguishing gas in the fire extinguishing tank 130, the plug 220 falls on the bearing frame 320;

[0051] S2: After the plug 220 falls, the fire extinguishing gas is sprayed outwards through the outer pipe 210 to extinguish the fire;

[0052] S3: After the fire is extinguished, the safety officer enters to check and close the branch valve, and confirms the safety before closing the alarm signal.

[0053] The technical scheme in the above embodiment of the application has at least the following technical effects or advantages:

[0054] The temperature sensing cable and the heat release ion detector are used to monitor the inside and outside of the energy storage cabinet 100 respectively, the safety factor is improved, and the fire position can be accurately identified; when the outer pipe 210 sprays the fire extinguishing gas vertically downward, the covering area of the sprayed fire extinguishing gas is large, and when the energy storage cabinet 100 is self-ignited, the fire can be extinguished in time; the plug 220 is more convenient to recycle and will not be lost.

[0055] Embodiment two

[0056] The operation of the safety officer in the above embodiment when supplementing the paraffin is difficult and the labor intensity is large; the embodiment of the application is optimized on the basis of the above embodiment.

[0057] As shown in Figure 6 The plug 220 is hollow inside, and the internal space is a medium cavity 222; a plurality of liquid outlets one are uniformly arranged on the side wall of the shell 221 of the plug 220; the medium cavity 222 is filled with paraffin; the plug 220 is provided with a supplement valve one 223 at the bottom, and an external paraffin supplement device (not shown in the figure) can supplement paraffin into the medium cavity 222, which is prior art and will not be described here.

[0058] Further, as shown in Figure 7As shown, the plugging device 200 further comprises an inner tube 240 sleeved inside the outer tube 210, the inner tube 240 is a circular tube, the top end of the inner tube 240 is fixedly connected with the inner wall of the top end of the outer tube 210, the bottom end of the inner tube 240 is fixedly connected with the inner wall of the bottom end of the outer tube 210, and the plug 220 is located inside the inner tube 240; the space between the inner tube 240 and the outer tube 210 is a middle cavity 241, the liquid outlet two is uniformly arranged on the side wall of the inner tube 240, and the middle cavity 241 is filled with paraffin; in the initial state, the inner diameter of the inner tube 240 is equal to the outer diameter of the plug 220; the outer tube 210 is provided with a supplementary valve two 242, and the paraffin supplement device (not shown in the figure) externally connected can supplement paraffin into the middle cavity 241, which is prior art and will not be repeated here; when the plug 220 enters the inner tube 240 from the bearing frame 320, the paraffin in the middle cavity 241 is in liquid state under the action of the heating wire 230, part of the liquid paraffin in the middle cavity 241 is extruded to the space between the inner tube 240 and the plug 220 under the extrusion of the plug 220, and the heating wire 230 continues to heat for a period of time to melt the paraffin in the medium cavity 222, so that the paraffin in the medium cavity 222 and the middle cavity 241 is integrated.

[0059] Preferably, the material of the inner tube 240 is high-temperature-resistant silica gel.

[0060] The technical solutions in the above embodiments of the application have at least the following technical effects or advantages:

[0061] The operation of supplementing paraffin is simple, which reduces the labor intensity of the safety personnel; the paraffin supplement device can be used repeatedly, which reduces the frequency of supplementing paraffin; when the paraffin is in solid state, the connection between the plug 220 and the outer tube 210 is relatively stable, which reduces the possibility of accidental touch.

[0062] Embodiment three

[0063] In the above embodiments, a special paraffin supplement device needs to be carried to supplement the paraffin in the medium cavity 222 or the middle cavity 241, which is not convenient; the embodiment of the application is optimized on the basis of the above embodiments.

[0064] As Figure 8 , Figure 9 and Figure 10As shown, the plugging device 200 further comprises an extrusion body 250, an air inlet pipe 260 and an extrusion balloon 270; the extrusion body 250 is located in the medium cavity 222, and in the initial state, the extrusion body 250 is a vertical hollow cylinder, the top end of the extrusion body 250 is fixedly connected with the inner wall of the top end of the shell 221, and the bottom end of the extrusion body 250 is fixedly connected with the inner wall of the bottom end of the shell 221; the bottom end of the shell 221 is fixedly provided with the air inlet pipe 260, the air inlet pipe 260 is in communication with the internal space of the extrusion body 250; the end of the air inlet pipe 260 away from the extrusion body 250 is fixedly connected with the extrusion balloon 270, and the interior of the air inlet pipe 260 is in communication with the interior of the extrusion balloon 270; the end of the extrusion balloon 270 away from the air inlet pipe 260 is provided with a one-way air inlet valve 271; the end of the air inlet pipe 260 close to the extrusion balloon 270 is provided with a controllable one-way valve 261, the controllable one-way valve 261 is a one-way valve with a deflation function, which is a prior art and will not be described here; the materials of the extrusion body 250, the air inlet pipe 260 and the extrusion balloon 270 are all high-temperature-resistant silica gel, and the length of the air inlet pipe 260 is not less than the length of the guide rod 310; when the paraffin in the medium cavity 222 is in a liquid state, the extrusion balloon 270 is pressed, part of the gas in the interior of the extrusion balloon 270 is filled into the extrusion body 250 through the controllable one-way valve 261, so that the extrusion body 250 is inflated, part of the liquid paraffin in the medium cavity 222 is extruded to the space between the inner tube 240 and the plug 220, the extrusion balloon 270 is loosened, and the external air enters the extrusion balloon 270 through the one-way air inlet valve 271; when it is needed to release the gas in the extrusion body 250, the controllable one-way valve 261 is in a deflation state, and the gas in the extrusion body 250 enters the external space through the controllable one-way valve 261.

[0065] Preferably, the end of the air inlet pipe 260 close to the extrusion balloon 270 is fixed on the bottom surface of the bearing frame 320.

[0066] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0067] The operation of supplementing paraffin is more simplified, and when the paraffin in the plug 220 is not consumed, an external paraffin supplementing device is not needed, so that the service life is longer; and the paraffin is more uniformly and sufficiently distributed between the inner tube 240 and the plug 220.

[0068] Embodiment four

[0069] When the fire occurs for a long time and the fire gradually evolves into a larger fire in the above embodiments, the fire-fighting gas needs to be sprayed faster; the embodiment of the present application is optimized on the basis of the above embodiments.

[0070] As Figure 11 , Figure 12 and Figure 13As shown, the shell 221 is made of high-temperature-resistant silica gel, and the wall thickness of the shell 221 is 3-5 cm; the plugging device 200 further comprises annular magnet one 280 and annular magnet two 290; the annular magnet one 280 and the annular magnet two 290 are both horizontally arranged annular blocks, the annular magnet one 280 is fixed to the upper end inside the shell 221, the annular magnet two 290 is fixed to the bottom of the shell 221, and the annular magnet one 280 and the annular magnet two 290 are both sleeved outside the extrusion body 250; in the initial state, the inner diameters of the annular magnet one 280 and the annular magnet two 290 are both greater than the diameter of the extrusion body 250, and the annular magnet one 280 and the annular magnet two 290 repel each other; the higher the temperature of the magnet, the weaker the magnetism, the annular magnet one 280 and the annular magnet two 290 repel each other, when the paraffin between the inner tube 240 and the plug 220 melts, under the blowing of the fire-fighting gas, the higher the temperature, the smaller the distance between the two, and the smaller the height of the plug 220.

[0071] Further, the annular magnet two 290 is a direct-current electromagnet, and the annular magnet one 280 is a permanent magnet.

[0072] The technical solutions in the above embodiments of the application have at least the following technical effects or advantages:

[0073] The higher the temperature of the magnet, the weaker the magnetism, the annular magnet one 280 and the annular magnet two 290 repel each other, under the blowing of the fire-fighting gas, the higher the temperature, the smaller the distance between the two, and the smaller the height of the plug 220, at this time, the fire-fighting gas is sprayed more concentratedly and quickly to cope with larger fire, and the use is more flexible and the adaptation range is more extensive; the annular magnet two 290 is a direct-current electromagnet, the height of the plug 220 is adjusted by controlling the magnetic force direction and size of the annular magnet two 290, and then the radiation angle and range of the fire-fighting gas are controlled, the use is more flexible and the adaptation range is more extensive.

[0074] Embodiment five

[0075] In the above embodiment, the outer tube 210 is vertically downward, which cannot be adjusted according to the fire position identified by the terminal 110, so that the accuracy of the fire-fighting gas is not high enough; the embodiment of the application is optimized on the basis of the above embodiment.

[0076] As Figure 14As shown, the outer tube 210 includes an outer hose 211 and an outer straight tube 212; the outer hose 211 is an upper end portion of the outer tube 210, the top end of the outer hose 211 is fixedly connected with the fire extinguishing branch 150, and the bottom end of the outer hose 211 is fixedly connected with the top end of the outer straight tube 212; the outer straight tube 212 is a lower end portion of the outer tube 210, and the bottom end of the outer straight tube 212 is fixedly connected with the chassis device 300; the length of the outer hose 211 is 5-10 cm, and the material of the outer hose 211 is high-temperature-resistant silica gel; and the heating wire 230 is spirally fixed on the outer straight tube 212.

[0077] As shown in Figure 15 and Figure 16 As shown, the material of the chassis device 300 is iron; the energy storage cabinet 100 is fixed with an electromagnet block one 160 and an electromagnet block two 170, both of which are equal in number to the plugging devices 200 and one-to-one corresponding; the electromagnet block one 160 and the electromagnet block two 170 are respectively fixed at the positions of the energy storage cabinet 100 on both sides of the corresponding plugging devices 200, and both of them are alternating current electromagnets; after the electromagnet block one 160 or the electromagnet block two 170 is powered on, the chassis device 300, the annular magnet one 280 and the annular magnet two 290 will all have magnetic action with the electromagnet block one 160 or the electromagnet block two 170, thereby controlling the orientation of the outer tube 210.

[0078] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0079] After identifying the more accurate fire location, the magnetic force size and direction between the electromagnet block one 160 and the electromagnet block two 170 are controlled, thereby controlling the orientation of the outer tube 210 towards the fire location, the spraying direction of the fire extinguishing gas is controllable, the coverage of the fire extinguishing gas is larger, and the fire at the beginning can be quickly suppressed; after the plug 220 falls on the chassis device 300, under the magnetic attraction between the annular magnet two 290 and the chassis device 300, the plug 220 will not produce large shaking.

[0080] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A self-triggering fire protection system for an energy storage device, characterized in that The utility model provides an energy storage cabinet fire extinguishing device, including energy storage cabinet (100), plugging device (200) and chassis device (300), energy storage cabinet (100) is the cabinet body containing energy storage battery in the electric power system, and the outer wall of energy storage cabinet (100) is fixed with terminal (110), the outer wall of energy storage cabinet (100) is fixed with fire extinguishing tank (130), and fire extinguishing tank (130) stores fire -fighting gas inside, the gas outlet of fire extinguishing tank (130) is in communication with main pipeline (140), main pipeline (140) is horizontally fixed on the upper end of energy storage cabinet (100), and a plurality of vertical fire extinguishing branch pipes (150) are communicated on main pipeline (140), fire extinguishing branch pipe (150) is fixed on the lateral wall of energy storage cabinet (100), and the end of fire extinguishing branch pipe (150) away from main pipeline (140) is fixedly connected with plugging device (200), plugging device (200) includes outer tube (210), plug (220) and heating wire (230), outer tube (210) is circular tube shape, and plug (220) is located in outer tube (210) inside, heating wire (230) is spirally fixed on the outer wall of outer tube (210), plug (220) is overall cylindrical, and the top end of plug (220) is smooth hemispherical, the height of outer tube (210) is not greater than the height of plug (220), and the initial state is filled with paraffin between plug (220) and outer tube (210), the bottom end of outer tube (210) is fixedly connected with chassis device (300), The plugging device (200) further includes an inner tube (240) that is sleeved inside the outer tube (210), the inner tube (240) is a circular tube, the top end of the inner tube (240) is fixedly connected with the inner wall of the top end of the outer tube (210), the bottom end of the inner tube (240) is fixedly connected with the inner wall of the bottom end of the outer tube (210), and the plug (220) is located inside the inner tube (240). The space between the inner tube (240) and the outer tube (210) is an intermediate cavity (241), the side wall of the inner tube (240) is uniformly provided with a liquid outlet two, and the intermediate cavity (241) is filled with paraffin. In the initial state, the inner diameter of the inner tube (240) is equal to the outer diameter of the plug (220). The side wall of the outer tube (210) is provided with a supplementary valve two (242). The material of the inner tube (240) is high-temperature-resistant silica gel.

2. The self-triggering fire protection system for an energy storage device of claim 1, wherein, The terminal (110) is electrically connected with a plurality of temperature sensing cables and a plurality of electric fire heads, and the temperature sensing cables and the electric fire heads correspond one by one. The temperature sensing cables are laid on the inner side wall of the energy storage cabinet (100), a DC 24V signal is connected into a loop through the temperature sensing cables and the electric fire heads, the temperature sensing cables are open in normal state, and the electric fire heads are in a pass state. When the temperature sensing cables reach a temperature and close to form a pass, the electric fire heads instantaneously explode and trigger the action of the selection valve, and the loop is disconnected at the same time. The terminal (110) detects a point between the temperature sensing cables and the electric fire heads. After the temperature sensing cables reach a temperature and close, the terminal (110) can immediately detect a 24V signal, at which time an alarm information is triggered.

3. The self-triggering fire protection system for an energy storage device of claim 1, wherein, The chassis device (300) comprises a plurality of vertically arranged guide rods (310) and horizontally arranged bearing frames (320); the length of the guide rod (310) is two-thirds of the length of the outer tube (210); the top end of the guide rod (310) is fixed on the outer wall of the bottom end of the outer tube (210), and the bottom end of the guide rod (310) is fixedly connected with the bearing frame (320), so that after the plug (220) slides out of the outer tube (210), it falls along the guide rod (310) and lands on the bearing frame (320).

4. The self-triggering fire protection system for an energy storage device of claim 3, wherein, The plug (220) is hollow inside, and the internal space is a medium cavity (222); a plurality of liquid outlets one are uniformly arranged on the side wall of the shell (221) of the plug (220); the medium cavity (222) is filled with paraffin; the bottom of the plug (220) is provided with a supplementary valve one (223).

5. The self-triggering fire protection system for an energy storage device of claim 4, wherein, The plugging device (200) further comprises an extrusion body (250), an air inlet pipe (260) and an extrusion balloon (270); the extrusion body (250) is located in the medium cavity (222), and in the initial state, the extrusion body (250) is a vertical hollow cylinder, the top end of the extrusion body (250) is fixedly connected with the inner wall of the top end of the shell (221), and the bottom end of the extrusion body (250) is fixedly connected with the inner wall of the bottom end of the shell (221); the bottom end of the shell (221) is fixedly connected with the air inlet pipe (260), and the air inlet pipe (260) is in communication with the internal space of the extrusion body (250); the end of the air inlet pipe (260) away from the extrusion body (250) is fixedly connected with the extrusion balloon (270), and the internal space of the air inlet pipe (260) is in communication with the internal space of the extrusion balloon (270); the end of the extrusion balloon (270) away from the air inlet pipe (260) is provided with a one-way air inlet valve (271); the end of the air inlet pipe (260) close to the extrusion balloon (270) is provided with a controllable one-way valve (261), and the controllable one-way valve (261) is a one-way valve with a deflation function.

6. The self-triggering fire protection system for an energy storage device of claim 5, wherein, The end of the air inlet pipe (260) close to the extrusion balloon (270) is fixed on the bottom surface of the bearing frame (320); the materials of the extrusion body (250), the air inlet pipe (260) and the extrusion balloon (270) are high-temperature-resistant silica gel, and the length of the air inlet pipe (260) is not less than the length of the guide rod (310).

7. The self-triggering fire protection system for an energy storage device of claim 5, wherein, The material of the shell (221) is high-temperature-resistant silica gel, and the wall thickness of the shell (221) is 3-5 cm; the plugging device (200) further comprises an annular magnet one (280) and an annular magnet two (290); the annular magnet one (280) and the annular magnet two (290) are both horizontally arranged annular blocks, the annular magnet one (280) is fixed to the upper end inside the shell (221), the annular magnet two (290) is fixed to the bottom of the shell (221), and the annular magnet one (280) and the annular magnet two (290) are both sleeved outside the extrusion body (250); in the initial state, the inner diameters of the annular magnet one (280) and the annular magnet two (290) are both greater than the diameter of the extrusion body (250), and the annular magnet one (280) and the annular magnet two (290) repel each other; the annular magnet two (290) is a direct-current electromagnet.

8. The self-triggering fire protection system for an energy storage device of claim 7, wherein, The outer tube (210) comprises an outer hose (211) and an outer straight tube (212); the outer hose (211) is the upper end part of the outer tube (210), the top end of the outer hose (211) is fixedly connected with the fire extinguishing branch (150), and the bottom end of the outer hose (211) is fixedly connected with the top end of the outer straight tube (212); the outer straight tube (212) is the lower end part of the outer tube (210), and the bottom end of the outer straight tube (212) is fixedly connected with the bottom frame device (300); the length of the outer hose (211) is 5-10 cm, and the material of the outer hose (211) is high-temperature-resistant silica gel; the heating wire (230) is spirally fixed on the outer straight tube (212).

9. The self-triggering fire protection system for an energy storage device of claim 8, wherein, The material of the bottom frame device (300) is iron; the energy storage cabinet (100) is fixed with an electromagnet block one (160) and an electromagnet block two (170), the two electromagnet blocks one (160) and two (170) are the same in number as the plugging devices (200) and one-to-one correspond to the plugging devices (200); the electromagnet block one (160) and the electromagnet block two (170) are respectively fixed to the positions of the energy storage cabinet (100) on the two sides of the corresponding plugging devices (200), and the electromagnet block one (160) and the electromagnet block two (170) are both alternating-current electromagnets.

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