Water mist curtain suppression device for fire hazard of electric vehicle in underground garage

Abstract

The invention provides an underground garage electric vehicle fire water mist enclosure curtain restraining device which comprises a water mist enclosure curtain seamless steel pipe set, a water mist enclosure curtain device rapid moving platform, a directional eccentric water mist atomizing nozzle and a fire extinguishing agent adding device. The water mist surrounding curtain device rapid moving platform is a three-dimensional platform formed by mutually fixing a plurality of square steel groups, universal wheels are arranged at the four corners of the bottom of the water mist surrounding curtain device rapid moving platform, and a water segregator combination is further arranged on the water mist surrounding curtain device rapid moving platform. The fire extinguishing device comprises a fire extinguishing agent adding device box, a DN40 water hose box, a DN65 water hose box, a 65 fire hose, a 40 fire hose, a fire-fighting lance and a visual fire detector. According to the invention, the fire can be controlled within a small range, and the fire safety of the underground garage is obviously improved. According to the application of the underground garage, the fireproof capacity of the underground garage can be improved to a great extent, and damage caused by accidents is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of fire protection engineering, and in particular relates to a water mist curtain suppression device for electric vehicle fire in an underground garage. Background Art

[0002] In recent years, my country's new energy vehicle industry has achieved positive results and is the main direction of the transformation and upgrading of the global automobile industry. However, it has also brought some fire safety problems. According to statistics from the Fire and Rescue Bureau, from January to April 2024, the number of spontaneous combustion of new energy vehicles in my country was 102, with an average of one electric vehicle fire every day. In the new energy vehicle fire accidents that have been counted and published, most of the vehicle types are pure electric vehicles. The fire characteristics of electric vehicles are quite different from those of traditional fuel vehicles. Electric vehicle fires are often difficult to detect, the risk of fire re-ignition is high, and the production of toxic smoke is large and highly toxic. Due to its special chemical composition and characteristic properties such as energy storage, the lithium-ion battery at the bottom of electric vehicles is prone to thermal runaway once it encounters overcharging, overheating, short circuit, mechanical collision, etc. A large number of fire entity experiments and accident cases have shown that the thermal runaway behavior of lithium-ion batteries is an important cause of electric vehicle fire accidents. At the same time, in the battery module, the lithium battery that has already experienced thermal runaway can transfer heat with the surrounding normal lithium-ion batteries through heat conduction, thermal radiation and other heat transfer methods, thereby inducing thermal runaway in the adjacent lithium-ion batteries, causing the thermal runaway to spread and causing a chain reaction. The risk of combustion is enormous.

[0003] Due to the thermal runaway tendency of power batteries, electric vehicle fire behavior is very special. Existing fire prevention technical measures can play a good role in suppressing and extinguishing fires for traditional fuel vehicles, but when a pure electric vehicle catches fire, the lithium battery pack may be blocked by the vehicle body, and the existing sprinkler system cannot directly apply water to the bottom of the vehicle body, making it difficult to suppress the development of the fire in the first time. In addition, the continuous jet flames in pure electric vehicle fires can easily cause the fire to spread to adjacent vehicles.

[0004] Water mist systems can effectively block the spread of flames and smoke, but traditional water curtains have many installation restrictions, are bulky and not flexible enough, cannot directly act on the fire area, and are difficult to suppress the spread of fire, which is prone to re-ignition.

[0005] The current traditional fire hydrant fire extinguishing system is often equipped with a water gun for fire extinguishing, which requires firefighters to hold the water gun on duty for a long time. It is impossible to effectively suppress fires under electric vehicles, which will increase the safety risks of personnel to a certain extent. Some underground garages have relatively small water storage capacity, which can ensure the water supply for fire fighting. However, if a large flow of water covers the fire area for a long time, it may lead to insufficient water supply and water shortage in the later stage.

[0006] Water mist nozzles have high pressure requirements and are not suitable for underground garage fire scenarios. Existing atomizing nozzles have small internal channels due to their blade design and are often easily clogged, especially when the fluid contains impurities or the nozzle has not been cleaned for a long time. In addition, if high-viscosity fire extinguishing agents are added to the fluid, the risk of clogging is higher and the life cycle is shorter. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a water mist curtain suppression device for electric vehicle fire in an underground garage in view of the deficiencies of the above-mentioned prior art, so as to solve the problems raised in the above-mentioned background technology.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: a water mist curtain suppression device for electric vehicle fire in an underground garage, comprising a water mist curtain seamless steel pipe group, a water mist curtain device fast moving platform, a directional eccentric water mist atomizing nozzle and a fire extinguishing agent adding device; The water mist curtain seamless steel pipe group is composed of a plurality of water mist curtain seamless steel pipes, a fixed base is arranged at the bottom end of each water mist curtain seamless steel pipe, a wheel assembly is arranged on the DN40 single-head external threads at both ends of each water mist curtain seamless steel pipe, and a plurality of directional eccentric water mist atomizing nozzles are evenly installed on each water mist curtain seamless steel pipe; The water mist curtain device fast moving platform is a three-dimensional platform composed of a plurality of square steel groups fixed to each other. Universal wheels are arranged at the four corners of the bottom of the water mist curtain device fast moving platform. The water mist curtain device fast moving platform is also provided with a water distributor assembly, a fire extinguishing agent adding device box, a DN40 hose box, a DN65 hose box, a 65 fire hose, a 40 fire hose, a fire hose and a visual fire detector. The water distributor assembly is fixed on the angle steel with long holes through pipe clamps A and pipe clamps B. The 65 fire hose is pulled out from the DN65 hose box in the water mist curtain device fast moving platform through the slide bar A to complete the connection between the external fire hydrant interface and the water distributor assembly on the water mist curtain device fast moving platform. The water distributor is fixed on the angle steel with long holes by pipe clamps A and pipe clamps B. Then the 40 fire hose is pulled out from the DN40 hose box through the slide bar B and connected with the water distributor assembly and the water mist curtain seamless steel pipe. The fire extinguishing agent adding device box is arranged in the middle of the water mist curtain device fast moving platform, the fire extinguishing agent adding device is placed in the fire extinguishing agent adding device shell, and the fire extinguishing agent adding device shell is fixed on the water mist curtain device fast moving platform through the fire extinguishing agent adding device support base and the water baffle; The visual fire detector is fixed on the electrical box of the water mist curtain device fast moving platform by an electrical box fixing plate and an electrical box supporting steel plate. The visual fire detector performs remote 360-degree range detection through a fire detector movable base. The power of the visual fire detector is provided by a battery in the electrical box.

[0009] As a further explanation of the present invention, the water mist curtain seamless steel pipe group is composed of water mist curtain seamless steel pipe A, water mist curtain seamless steel pipe B, water mist curtain seamless steel pipe C, water mist curtain seamless steel pipe D, water mist curtain seamless steel pipe E, water mist curtain seamless steel pipe F, water mist curtain seamless steel pipe G, and water mist curtain seamless steel pipe H. When in use, a filter is set at the port of the first section of the water mist curtain seamless steel pipe.

[0010] As a further explanation of the present invention, a rotatable handle and a fixed handle are respectively installed at both ends of the water mist curtain seamless steel pipe A, water mist curtain seamless steel pipe B, water mist curtain seamless steel pipe C, water mist curtain seamless steel pipe D, water mist curtain seamless steel pipe E, water mist curtain seamless steel pipe F, water mist curtain seamless steel pipe G, and water mist curtain seamless steel pipe H. The rotatable handle is set to one end close to the inner thread male tube tooth KYKA4017, and the fixed handle is set to one end close to the 40 inner thread male tube tooth interface KYKA4020.

[0011] As a further illustration of the present invention, the water mist curtain seamless steel pipe A and the water mist curtain seamless steel pipe E are installed with a pipe cap on a DN40 single-end external thread at one end.

[0012] As a further explanation of the present invention, the directional eccentric water mist atomizing nozzle is welded to the water mist curtain seamless steel pipe group through the nozzle fixing base A and the nozzle fixing base B, and the water mist Dv90 particle size is controlled within 500μm to 1000μm through the nozzle water inlet and the nozzle mouth cap of the directional eccentric water mist atomizing nozzle 1; the Dv50 particle size is controlled below 300μm, and the directional side of the vertical nozzle in the directional eccentric water mist atomizing nozzle is facing the car, and the suppression side is opposite to the direction of the car; the suppression side of the horizontal nozzle in the directional eccentric water mist atomizing nozzle is facing the bottom of the vehicle, and the cooling side is facing the ground.

[0013] As a further illustration of the present invention, the water distributor assembly is also provided with a solenoid valve A and a solenoid valve B. The solenoid valve A controls the start and stop of the water flow in the entire pipeline, and the solenoid valve B is installed on the fire extinguishing agent hose to control the release and stop of the fire extinguishing agent.

[0014] As a further illustration of the present invention, the square steel group consists of square steel A, square steel B, square steel C, square steel E, square steel F and square steel G.

[0015] As a further illustration of the present invention, a fence fixing bottom plate is also provided on the fast moving platform of the water mist curtain device, and the water mist curtain seamless steel pipe can be inserted into the fence fixing bottom plate through fixed bases installed at both ends.

[0016] As a further illustration of the present invention, the water distributor assembly is also provided with a water inlet hose. As a further illustration of the present invention, a fire extinguishing agent adding device soft film capsule is also provided in the fire extinguishing agent adding device box, and a water outlet valve and a water flow cavity are also provided in the fire extinguishing agent adding device box.

[0017] Compared with the prior art, the present invention has the following advantages: The water mist curtain device in the present invention is equipped with a visual fire detector on the fast moving platform. The fire extinguisher can remotely control the fire extinguishing agent adding device and the water distributor according to the fire situation observed by the video. In the first stage of the initial stage of the fire, a large flow of water can be continuously supplied, and pure water mist is used to suppress the flame and fully cool the temperature of the fire area. When the open flame is extinguished through the fire detector, the second stage is entered, and the solenoid valve is remotely controlled to release the fire extinguishing agent and water mist in a pulsed manner. The fire extinguishing agent and water are sprayed at a certain frequency to cover the fire area, so that the fire extinguishing agent adheres to the surface of the vehicle body and can stay longer than pure water. It not only ensures the fire extinguishing effect, but also can save a lot of water resources and fire extinguishing agents, and reduce environmental pollution.

[0018] The present invention can utilize swirl flow to generate biased atomized water mist by controlling the water inlet aperture and position of a directional eccentric water mist atomizing nozzle, and can control the water mist Dv90 particle size within a range of 500 μm to 1000 μm; the Dv50 particle size is controlled below 300 μm; and one side of the directional atomization is a suppression side, the water flow impact force is relatively large, and the suppression effect on open flames is better; the other side is a cooling side, the atomization effect is good, and cooling can be better performed, heat can be absorbed, and flame spread can be prevented.

[0019] In the directional eccentric water mist atomizing nozzle of the present invention, the directional side of the vertical nozzle faces the car, and the suppression side is opposite to the car; in the directional eccentric water mist atomizing nozzle, the suppression side of the horizontal nozzle faces the bottom of the vehicle, and the cooling side faces the ground.

[0020] The water mist curtain seamless steel pipe of the present invention can be freely combined. If the burning vehicle is a small car, 3 to 4 sections can be spliced; if the burning vehicle is an electric bicycle, only 1 to 2 sections need to be spliced. It has excellent expandability and different combination splicing methods can be selected according to specific circumstances, which is convenient for flexible use.

[0021] Stainless steel handle self-locking devices are arranged at both ends of the water curtain enclosure seamless steel pipe in the present invention. During assembly, the rotatable handle of the front section of the water mist curtain seamless steel pipe can be buckled on the fixed handle of the rear section of the water mist curtain seamless steel pipe, thereby ensuring the rigid stability of the overall structure and ensuring that the two sections of the water mist curtain seamless steel pipe will not be relatively offset; and ensuring that the overall structure has a certain flexibility. If it is necessary to strengthen the water mist fire extinguishing intensity at a specific fire site, the self-locking device can be used to deflect it at a certain angle without affecting the stability, so that the water mist can directly act on the target site.

[0022] The present invention can control the fire within a smaller range and significantly improve the fire safety of the underground garage. The application of the present invention can greatly improve the fire prevention ability of the underground garage and reduce the damage caused by accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a stereogram of the overall structure of the present invention; Figure 2 It is the front view of the overall structure of the present invention; Figure 3 It is a top view of the overall structure of the present invention; Figure 4 It is a top view of the pipeline in the present invention; Figure 5 It is the main view of the pipeline in the present invention; Figure 6 This is a structural diagram of a water mist curtain seamless steel pipe in the present invention; Figure 7 It is a schematic diagram of the longitudinal section structure of the directional eccentric water mist atomizing nozzle in the present invention; Figure 8 It is a schematic cross-sectional structure diagram of a directional eccentric water mist atomizing nozzle in the present invention; Fig. 9 This is a schematic diagram of the directional eccentricity of the directional eccentric water mist atomizing nozzle in the present invention; Fig.10 This is a schematic diagram of the installation of the directional eccentric water mist atomizing nozzle in the present invention; Fig.11 It is a three-dimensional diagram of the fire extinguishing agent adding device of the present invention; Fig.12 It is a structural diagram of the fire extinguishing agent adding device in the present invention; Fig.13 It is the arrangement flow chart of the present invention.

[0024] Description of reference numerals: 1- directional eccentric water mist atomizing nozzle, 2- wheel combination, 3- fence fixed bottom plate, 4- DN40 water mist curtain seamless steel pipe A, 5- fixed base, 6- square steel A, 7- square steel B, 8- square steel C, 9- universal wheel, 10- push rod, 11- water distributor combination, 12- fire extinguishing agent adding device box, 13- DN40 water mist curtain seamless steel pipe E, 14-DN40 water hose box, 15-DN65 water hose box, 16-DN40 single-head outer thread, 17-40 inner thread male pipe tooth KYKA40, 18-filter, 19-pipe cap, 20-40 inner thread male pipe tooth interface KYKA40, 21-fire extinguisher, 22-rotatable handle, 23-fixed handle, 24-slide rod A, 25-pipe clamp A, 26-pipe clamp B, 27-square steel E, 28-square steel F, 29-square steel G, 30-65 fire hose, 31-40 fire hose, 32-fire hose, 33-long hole angle steel, 34-DN40 water mist curtain seamless steel pipe B, 35-DN40 water mist curtain seamless steel pipe C, 36-DN40 water mist curtain seamless steel pipe D, 37- DN40 water mist curtain seamless steel pipe F, 38- DN40 water mist curtain seamless steel pipe G, 39- DN40 water mist curtain seamless steel pipe H, 40- slide rod B, 41- flange, 42- fire extinguishing agent adding device support base, 43- fire extinguishing agent adding device, 44- fire extinguishing agent hose, 45- water inlet hose, 46- fire extinguishing agent adding device shell, 47- fire extinguishing agent adding device soft film capsule, 48- drain valve, 49- water flow cavity, 50- solenoid valve B, 51- nozzle cap, 52- nozzle fixed base A, 53- nozzle fixed base B, 54- nozzle water inlet, 55- nozzle shell, 56- water baffle, 57- solenoid valve A, 58- visual fire detector, 59- electric box, 60- electric box fixed plate, 61- fire detector movable base, 62- electric box support steel plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1-3 As shown, the present invention provides a technical solution: a water mist curtain suppression device for electric vehicle fire in an underground garage, comprising a water mist curtain seamless steel pipe group, a water mist curtain device fast moving platform, a directional eccentric water mist atomizing nozzle 1 and a fire extinguishing agent adding device 43; The water mist curtain seamless steel pipe group is composed of multiple water mist curtain seamless steel pipes, and the water mist curtain seamless steel pipe group is composed of water mist curtain seamless steel pipe A4, water mist curtain seamless steel pipe B34, water mist curtain seamless steel pipe C35, water mist curtain seamless steel pipe D36, water mist curtain seamless steel pipe E13, water mist curtain seamless steel pipe F37, water mist curtain seamless steel pipe G38, and water mist curtain seamless steel pipe H39. When in use, a filter 18 is set at the port of the first section of the water mist curtain seamless steel pipe.

[0027] A rotatable handle 22 and a fixed handle 23 are respectively installed at both ends of the water mist curtain seamless steel pipe A4, water mist curtain seamless steel pipe B34, water mist curtain seamless steel pipe C35, water mist curtain seamless steel pipe D36, water mist curtain seamless steel pipe E13, water mist curtain seamless steel pipe F37, water mist curtain seamless steel pipe G38 and water mist curtain seamless steel pipe H39. The rotatable handle 22 is set to one end close to the 40 internal thread male pipe thread KYKA4017, and the fixed handle is set to one end close to the 40 internal thread male pipe thread interface KYKA4020.

[0028] The water mist curtain seamless steel pipe A4 and the water mist curtain seamless steel pipe E13 are provided with a pipe cap 19 on a DN40 single-end external thread 16 at one end.

[0029] A fixed base 5 is arranged at the bottom end of each water mist curtain seamless steel pipe, and a fence fixed bottom plate 3 is also arranged on the fast moving platform of the water mist curtain device. The water mist curtain seamless steel pipe can be inserted into the fence fixed bottom plate 3 through the fixed bases 5 installed at both ends.

[0030] A wheel assembly 2 is provided on the DN40 single-end external thread 16 at both ends of each water mist curtain seamless steel pipe, and a plurality of directional eccentric water mist atomizing nozzles 1 are evenly spacedly installed on each water mist curtain seamless steel pipe; the directional eccentric water mist atomizing nozzle 1 is welded to the water mist curtain seamless steel pipe group through the nozzle fixing base A52 and the nozzle fixing base B53, and the water mist Dv90 particle size is controlled within 500μm to 1000μm through the nozzle water inlet 54 and the nozzle mouth cap 51 of the directional eccentric water mist atomizing nozzle 1; the Dv50 particle size is controlled below 300μm, and the directional side of the vertical nozzle in the directional eccentric water mist atomizing nozzle 1 faces the car, and the suppression side is opposite to the direction of the car; the suppression side of the horizontal nozzle in the directional eccentric water mist atomizing nozzle 1 faces the bottom of the vehicle, and the cooling side faces the ground.

[0031] The water mist curtain device fast moving platform is a three-dimensional platform composed of a plurality of square steel groups fixed to each other, wherein the square steel group is composed of square steel A6, square steel B7, square steel C8, square steel E27, square steel F28 and square steel G29.

[0032] Universal wheels 9 are arranged at the four corners of the bottom of the water mist curtain device fast moving platform. The water mist curtain device fast moving platform is also provided with a water distributor assembly 11, a fire extinguishing agent adding device box 12, a DN40 hose box 14, a DN65 hose box 15, a 65 fire hose 30, a 40 fire hose 31, a fire hose 32 and a visual fire detector 58. The water distributor assembly 11 is fixed to the long hole angle steel 33 through a pipe clamp A25 and a pipe clamp B26. The 65 fire hose 30 is pulled out from the DN65 hose box 15 in the water mist curtain device fast moving platform through the slide bar A24 to complete the connection between the external fire hydrant interface and the water distributor assembly 11 on the water mist curtain device fast moving platform. The water distributor is fixed on the long hole angle steel 33 by the pipe clamp A25 and the pipe clamp B26. Then the 40 fire hose 31 is pulled out from the DN40 hose box 14 through the slide bar B40 to connect with the water distributor assembly 11 and the water mist curtain seamless steel pipe. The fire extinguishing agent adding device box 12 is arranged in the middle of the water mist curtain device fast moving platform. During use, the fluid pressure difference is used to drive the mixing of the fire extinguishing agent and water. The Venturi tube structure is adopted. When water flows through, the flow rate increases and the pressure decreases, forming a negative pressure zone. The fire extinguishing agent is sucked from the fire extinguishing agent adding device and mixed with the water flow. The fire extinguishing operation is performed in cooperation with the water divider assembly 11. The fire extinguishing agent adding device 43 is placed in the fire extinguishing agent adding device shell 46. The fire extinguishing agent adding device shell 46 is fixed on the water mist curtain device fast moving platform through the fire extinguishing agent adding device support base 42 and the water baffle 56. The fire extinguishing agent adding device shell 46 is also provided with a flange 41; The visual fire detector 58 is fixed on the electrical box 59 of the water mist curtain device's fast moving platform by an electrical box fixing plate 60 and an electrical box supporting steel plate 62. The visual fire detector 58 performs remote 360-degree range detection through the fire detector movable base 61. The power of the visual fire detector 58 is provided by the battery in the electrical box 59.

[0033] The water distributor assembly 11 is also provided with a water inlet hose 45 , the fire extinguishing agent adding device box 12 is also provided with a fire extinguishing agent adding device soft film capsule 47 , and the fire extinguishing agent adding device box 12 is also provided with a drain valve 48 and a water flow cavity 49 .

[0034] When in use, assemble the equipment first. When receiving a fire, use the universal wheel 9 to control the water mist curtain device to quickly move the platform to the vicinity of the designated location. At the same time, the fire extinguisher can use the push rod 10 to move the water mist curtain device to quickly move the platform to adjust the water mist curtain seamless steel pipe A4, water mist curtain seamless steel pipe B34, water mist curtain seamless steel pipe C35, water mist curtain seamless steel pipe D36, water mist curtain seamless steel pipe E13, water mist curtain seamless steel pipe F37, water mist curtain seamless steel pipe G38, water mist curtain seamless steel pipe H39, and can adjust according to the specific vehicle on fire; If a car is on fire, 3 to 4 sections of water mist curtain seamless steel pipes can be removed for assembly. If an electric bicycle is on fire, 1 to 2 sections of water mist curtain seamless steel pipes can be removed for assembly.

[0035] The water mist curtain pipe group is formed by the 40 inner thread male pipe thread KYKA40 17 and the 40 inner thread male pipe thread interface KYKA4020 between the water mist curtain seamless steel pipe A4, the water mist curtain seamless steel pipe B34, the water mist curtain seamless steel pipe C35 and the water mist curtain seamless steel pipe D36 being fixedly connected to each other; The 40 inner thread male tube tooth KYKA40 17 and the 40 inner thread male tube tooth interface KYKA40 20 between the water mist curtain seamless steel pipe E13, the water mist curtain seamless steel pipe F37, the water mist curtain seamless steel pipe G38 and the water mist curtain seamless steel pipe H39 are fixedly connected to each other.

[0036] After assembly, the rotatable handle 22 installed on the DN40 single-end external thread 16 at one end of each water mist curtain seamless steel pipe is buckled on the fixed handle 23 on the DN40 single-end external thread 16 near the end of another water mist curtain seamless steel pipe for self-locking. This can ensure that each water mist curtain seamless steel pipe will not deflect and remain stable; during the fire extinguishing process, if it is necessary to adjust the water mist fire extinguishing intensity for a specific fire site, the self-locking device can be used to deflect it by a certain angle without affecting the stability, so that the water mist can directly act on the target site.

[0037] The 65 fire hose 30 is quickly pulled out from the DN65 hose box 15 in the water mist curtain device fast moving platform through the slide bar A24 and connected to the fire hydrant interface and the water divider combination 11 on the water mist curtain device fast moving platform. The water divider is fixed on the long hole angle steel 33 by the pipe clamp A25 and the pipe clamp B26. Then the 40 fire hose 31 is quickly pulled out from the DN40 hose box 14 through another slide bar B40 and connected with the water divider combination 11 and the 40 inner thread male pipe tooth KYKA40 17 at one end of the water mist curtain seamless steel pipe D36 and the water mist curtain seamless steel pipe H39. Subsequently, the 40 fire hose 31 is connected with the water divider combination 11 through the 40 inner thread male pipe tooth KYKA40 17 and the 40 inner thread male pipe tooth interface KYKA4020 to the fire hose 32 as an auxiliary fire extinguishing means of the device.

[0038] After assembly, the rotatable handle 22 at the front and the wheel assembly 2 are used to move the fire vehicle parking space. After placement, the wheel assembly 2 installed on each DN40 water mist curtain seamless steel pipe single-end outer thread will play a supporting and fixing role. After training, two people can assemble the underground garage electric vehicle fire water mist curtain suppression device within 2 minutes and move it to the designated location.

[0039] Then open the valve, open the fire hydrant interface valve and the water distributor valve, and then evacuate the scene. At this time, the scene can be observed through the visual fire detector 58, and the fire can be extinguished in stages. In the initial stage of the fire, the solenoid valve A57 can be opened to continuously supply water to the device, so that the water flows through the directional eccentric water mist atomizing nozzle 1, and is atomized between the nozzle water inlet 54 and the nozzle cap 51. The atomized water mist Dv90 particle size is between 500μm and 1000μm. The water mist impact force of the atomizing nozzle on one side of the burning car is large, and it has a good inhibitory effect on the open flame until the open flame is extinguished. The water mist atomization effect on the other side is good, and the heat absorption is more obvious, which can cool the surrounding temperature and prevent the spread of the fire.

[0040] Then, the visual fire detector 58 finds that the open fire has been extinguished, and enters the second stage of fire extinguishing. The electromagnetic valve B50 can be opened regularly by remote control, and works for 5 seconds within one minute, and the specific fire extinguishing agent in the container is frequently released into the pipeline. When the water flows through the water inlet hose 45, due to the resistance loss along the way, the pressure of the water flow cavity 49 is greater than the pressure in the soft film capsule 47. Therefore, the fire extinguishing agent in the soft film capsule will be transported to the pipeline through the fire extinguishing agent hose 44, covering the surface of the fire area, which can save a lot of water while ensuring the fire extinguishing efficiency. Then wait for professional firefighters to handle it.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water mist curtain suppression device for electric vehicle fire in an underground garage, characterized in that: It comprises a water mist curtain seamless steel pipe group, a water mist curtain device fast moving platform, a directional eccentric water mist atomizing nozzle (1) and a fire extinguishing agent adding device (43); The water mist curtain seamless steel pipe group is composed of a plurality of water mist curtain seamless steel pipes, each of which is provided with a fixed base (5) at the bottom end, and a wheel assembly (2) is provided on the DN40 single-head external threads (16) at both ends of each water mist curtain seamless steel pipe, and a plurality of directional eccentric water mist atomizing nozzles (1) are also installed at equal intervals on each water mist curtain seamless steel pipe; The water mist curtain device fast moving platform is a three-dimensional platform composed of a plurality of square steel groups fixed to each other. Universal wheels (9) are arranged at the four corners of the bottom of the water mist curtain device fast moving platform. The water mist curtain device fast moving platform is also provided with a water distributor assembly (11), a fire extinguishing agent adding device box (12), a DN40 water hose box (14), a DN65 water hose box (15), a 65 fire hose (30), a 40 fire hose (31), a fire hose (32) and a visual fire detector (58). The water distributor assembly (11) is connected to the pipe clamp A (25) by a pipe clamp A (25). B (26) is fixed on the angle steel (33) with a long hole, the 65 fire hose (30) is pulled out from the DN65 hose box (15) in the water mist curtain device fast moving platform through the slide bar A (24) to complete the connection between the external fire hydrant interface and the water distributor assembly (11) on the water mist curtain device fast moving platform, the water distributor is fixed on the angle steel (33) with a long hole by the pipe clamp A (25) and the pipe clamp B (26), and then the 40 fire hose (31) is pulled out from the DN40 hose box (14) through the slide bar B (40) and connected with the water distributor assembly (11) and the water mist curtain seamless steel pipe; The fire extinguishing agent adding device box (12) is arranged in the middle of the water mist curtain device fast moving platform, the fire extinguishing agent adding device (43) is placed in the fire extinguishing agent adding device shell (46), and the fire extinguishing agent adding device shell (46) is fixed on the water mist curtain device fast moving platform through the fire extinguishing agent adding device support base (42) and the water baffle (56); The visual fire detector (58) is fixed to the electric box (59) of the fast moving platform of the water mist curtain device by an electric box fixing plate (60) and an electric box supporting steel plate (62). The visual fire detector (58) performs remote 360-degree range detection through the fire detector movable base (61). The power of the visual fire detector (58) is provided by the battery in the electric box (59).

2. The water mist curtain suppression device for electric vehicle fire in underground garage according to claim 1 is characterized in that: The water mist curtain seamless steel pipe group comprises a water mist curtain seamless steel pipe A (4), a water mist curtain seamless steel pipe B (34), a water mist curtain seamless steel pipe C (35), a water mist curtain seamless steel pipe D (36), a water mist curtain seamless steel pipe E (13), a water mist curtain seamless steel pipe F (37), a water mist curtain seamless steel pipe G (38), and a water mist curtain seamless steel pipe H (39). When in use, a filter (18) is arranged at the port of the first section of the water mist curtain seamless steel pipe.

3. The water mist curtain suppression device for electric vehicle fire in underground garage according to claim 2 is characterized in that: A rotatable handle (22) and a fixed handle (23) are respectively installed at both ends of the water mist curtain seamless steel pipe A (4), water mist curtain seamless steel pipe B (34), water mist curtain seamless steel pipe C (35), water mist curtain seamless steel pipe D (36), water mist curtain seamless steel pipe E (13), water mist curtain seamless steel pipe F (37), water mist curtain seamless steel pipe G (38), and water mist curtain seamless steel pipe H (39), wherein the rotatable handle (22) is arranged at one end close to the 40 inner thread male pipe thread KYKA40 (17), and the fixed handle is arranged at one end close to the 40 inner thread male pipe thread interface KYKA40 (20).

4. The water mist curtain suppression device for electric vehicle fire in underground garage according to claim 2 is characterized in that: The water mist curtain seamless steel pipe A (4) and the water mist curtain seamless steel pipe E (13) are installed with a pipe cap (19) on a DN40 single-end external thread (16) at one end.

5. The water mist curtain suppression device for electric vehicle fire in underground garage according to claim 1 is characterized in that: The directional eccentric water mist atomizing nozzle (1) is welded to the water mist curtain seamless steel pipe group through a nozzle fixing base A (52) and a nozzle fixing base B (53); the water mist Dv90 particle size is controlled within a range of 500 μm to 1000 μm through a nozzle water inlet (54) and a nozzle cap (51) of the directional eccentric water mist atomizing nozzle (1); the Dv50 particle size is controlled below 300 μm; and the directional side of the vertical nozzle in the directional eccentric water mist atomizing nozzle (1) faces the vehicle, and the suppression side is opposite to the direction of the vehicle; the suppression side of the horizontal nozzle in the directional eccentric water mist atomizing nozzle (1) faces the bottom of the vehicle, and the cooling side faces the ground.

6. The water mist curtain suppression device for electric vehicle fire in underground garage according to claim 1 is characterized in that: The water distributor assembly (11) is also provided with a solenoid valve A (57) and a solenoid valve B (50). The solenoid valve A (57) controls the start and stop of the water flow in the entire pipeline, and the solenoid valve B (50) is installed on the fire extinguishing agent hose (44) and is used to control the release and stop of the fire extinguishing agent.

7. The water mist curtain suppression device for electric vehicle fire in underground garage according to claim 1 is characterized in that: The square steel group consists of square steel A (6), square steel B (7), square steel C (8), square steel E (27), square steel F (28) and square steel G (29).

8. The water mist curtain suppression device for electric vehicle fire in underground garage according to claim 1 is characterized in that: The water mist curtain device fast moving platform is also provided with a fence fixing bottom plate (3), and the water mist curtain seamless steel pipe can be inserted into the fence fixing bottom plate (3) through fixing bases (5) installed at both ends.

9. The water mist curtain suppression device for electric vehicle fire in underground garage according to claim 1, characterized in that: The water distributor assembly (11) is also provided with a water inlet hose (45).

10. The water mist curtain suppression device for electric vehicle fire in underground garage according to claim 1, characterized in that: A fire extinguishing agent adding device soft membrane capsule (47) is also provided in the fire extinguishing agent adding device box (12), and a water outlet valve (48) and a water flow cavity (49) are also provided in the fire extinguishing agent adding device box (12).

Images