New energy passenger car fire extinguishing bin for underground garage
By designing a new energy passenger car fire extinguishing silo for underground garages, the problem of battery fire in new energy vehicles is difficult to control in underground garages, and a fire extinguishing solution with safe, explosion-proof and good fire extinguishing effect is achieved, and water-saving use is achieved.
Patent Information
- Application Number
- CN202422162528.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-04
AI Technical Summary
When the battery of a new energy vehicle is charged or left to stand, it may cause fire damage due to the internal thermal failure of the battery, causing fire hazards. The existing fire extinguishing methods and equipment cannot effectively control the fire in the underground garage, causing major property losses and personal dangers.
A new energy passenger car fire extinguishing silo for underground garages is designed, including an annular silo wall, bottom ring and top frame. The bottom ring is connected to the fire piping through a water filling ring, the top frame is connected to the top of the basement garage through a lifting spring mechanism, and the spray pipe is connected to the fire piping through a water inlet pipe, forming a explosion-proof and fire-extinguishing effect.
The device can quickly reduce the temperature of the battery pack, effectively extinguish fires, seal harmful gases, ensure the safety of firefighters, and save water. The water consumption of conventional fire extinguishing is about 5 tons per use.
Smart Images
Figure CN222969077U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fire extinguishing device, in particular to a fire extinguishing bin for new energy passenger vehicles in an underground garage. Background Art
[0002] In recent years, the field of new energy passenger vehicles has developed rapidly, and the number of new energy passenger vehicles on the market has gradually increased. Due to the special electrochemical characteristics of new energy vehicle batteries, fires may occur during charging and static state due to internal thermal runaway failures of the batteries, posing a fire hazard. The fires of new energy vehicles caused by battery thermal runaway bring great harm. For the fires caused by battery thermal runaway, there are currently no safer and more mature fire extinguishing methods and special equipment at home and abroad.
[0003] When the battery of a new energy vehicle catches fire spontaneously, a large amount of harmful gases to the human body will be generated, which are difficult to be discharged from the underground garage. And due to the height limit of the underground garage, it is difficult for fire trucks and firefighters to enter the fire scene to carry out fire extinguishing and rescue. Such fires are often not effectively controlled in the initial stage, resulting in heavy property losses, endangering people's lives and causing uncontrollable damage to the building structure.
[0004] In terms of the selection of fire extinguishing media and fire extinguishing methods, it is currently recognized in the industry that the most effective fire extinguishing method is to control the temperature of the new energy vehicle battery pack below the battery chain reaction temperature. Using water to cool down and extinguish the fire is the simplest, fastest and most economical choice. Since the battery pack is generally located at the middle and bottom of the vehicle, the conventional water spraying method cannot quickly control the internal and external temperatures of the battery pack fundamentally, let alone solve the problem of explosion isolation during the explosion of the battery pack. There are great potential safety hazards for firefighters during the fire extinguishing process.
[0005] Although technicians in this field at home and abroad have conducted a lot of in-depth research in the fields of solid-state batteries, BMS management systems for power batteries, and structural safety of battery packs, and have launched some products, the above all belong to the category of active prevention and control. Based on the special attributes of small volume and large energy accumulation of new energy vehicles, the active prevention system and control methods cannot completely prevent the occurrence of new energy vehicle fires.
[0006] Therefore, there is an urgent need in the prior art for a fire extinguishing bin for new energy passenger vehicles in an underground garage with good safety, explosion isolation and fire extinguishing effects. Summary of the Invention
[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a fire extinguishing bin for new energy passenger vehicles in an underground garage with good safety, explosion isolation and fire extinguishing effects.
[0008] The object of the utility model is achieved by the following technical solutions: A fire extinguishing bin for new energy passenger cars in an underground garage, comprising a bin body. The bin body includes an annular bin wall, a bin body bottom ring provided at the bottom end of the bin wall, a bin body top frame provided at the top of the bin wall, and a top surface connected to the top surface of the bin body top frame. The bin body top frame is connected to the top of the underground garage through a top frame hanging steel cable. The bin body top frame is provided with a lifting spring mechanism. The bin body bottom ring includes a water filling ring and a semi-circular metal plate connected to the water filling ring. The inlet of the water filling ring is connected to the fire fighting pipeline of the underground garage through a soft pipe fitting. The lifting spring mechanism is connected with a bottom ring hanging steel cable, and the bottom ring hanging steel cable is connected to the semi-circular metal plate. A spray pipe is provided at the lower end of the top surface, and the spray pipe is connected to the fire fighting pipeline of the underground garage through a water inlet pipe.
[0009] The water filling ring is provided with a pressure relief valve, and the pressure relief valve is located inside the bin body.
[0010] The lifting spring mechanism includes a shell, a rotating shaft rotatably connected inside the shell, two wire winding wheels provided at the left and right ends of the rotating shaft, and a torsion spring provided on the rotating shaft. The torsion spring is connected between the rotating shaft and the wire winding wheel, and the bottom ring hanging steel cable is wound around the wire winding wheel.
[0011] A plurality of transverse strengthening steel cables are provided on the outer side of the bin wall. A plurality of bottom ring hanging steel cables are provided. A steel cable limit buckle is connected at the intersection of the transverse strengthening steel cable and the bottom ring hanging steel cable.
[0012] The steel cable limit buckle includes a transverse steel pipe and a circular ring welded to the side of the steel pipe. The transverse strengthening steel cable passes through the steel pipe, and the bottom ring hanging steel cable passes through the circular ring.
[0013] The bin wall is composed of an inorganic refractory blanket and a silica gel flexible refractory blanket located outside the inorganic refractory blanket. The inorganic refractory blanket is adhesively bonded to the silica gel flexible refractory blanket. The left and right ends of the inorganic refractory blanket and the silica gel flexible refractory blanket are connected by structural adhesive and rivets to form an annular bin wall.
[0014] The top surface is an inorganic refractory blanket layer, and the spray pipe interface of the spray pipe extends upward through the inorganic refractory blanket layer.
[0015] The bin body top frame is provided with a top frame lifting ring, and the top frame hanging steel cable is connected to the top frame lifting ring.
[0016] The semi-circular metal plate is adhesively bonded to the water filling ring. The semi-circular metal plate is provided with a bottom ring lifting ring, and the bottom ring hanging steel cable is connected to the bottom ring lifting ring.
[0017] The bin wall is provided with a sewage outlet and an overflow port, and the water filling ring is provided with an air inflation and drainage valve.
[0018] The silo body is also provided with a flue gas sensor and a temperature sensor.
[0019] The beneficial effects of the present utility model are as follows: While performing spray water injection, the lithium battery pack of the new energy vehicle is completely immersed in water, rapidly reducing the temperature of the battery pack, and having a good fire extinguishing effect; the harmful gases generated during battery spontaneous combustion are enclosed in the fire extinguishing silo, and the spray water has a good smoke elimination effect, reducing the diffusion of harmful gases; the present utility model is safe and explosion-proof, which can ensure the personal safety of firefighters; the present utility model is relatively water-saving, with a conventional fire extinguishing water consumption of about 5 tons at a time, and the water consumption is low. Description of the Drawings
[0020] Figure 1 is a schematic structural diagram of the working state of the front of the present utility model;
[0021] Figure 2 is a schematic top view structural diagram of the present utility model;
[0022] Figure 3 is a schematic left view structural diagram of the present utility model;
[0023] Figure 4 is a schematic structural diagram of the use state of the present utility model;
[0024] Figure 5 is Figure 3 a partial sectional structural diagram in the A-A direction of
[0025] Figure 6 is Figure 1 a partial sectional structural diagram in the B-B direction of
[0026] Figure 7 is Figure 1 a partial enlarged structural diagram of part C of
[0027] Figure 8 is Figure 2 a partial sectional structural diagram in the D-D direction of
[0028] Figure 9 is Figure 1 a partial sectional structural diagram in the E-E direction of
[0029] Figure 10 is a schematic structural diagram of the steel cable limit buckle;
[0030] Figure 11 is Figure 10 a left view of
[0031] Figure 12 is a schematic structural diagram of the bottom ring of the silo body;
[0032] Figure 13It is a schematic structural diagram of the lifting spring mechanism;
[0033] Figure 14 It is a schematic diagram of the principle of the soaking fire extinguishing process of the present invention.
[0034] In the figure: 1 - lifting spring mechanism; 2 - bottom ring of the bin body; 3 - top frame of the bin body; 4 - bottom ring hanging steel cable; 5 - steel cable limit buckle; 6 - transverse strengthening steel cable; 7 - top frame hanging steel cable; 8 - inorganic refractory blanket; 9 - silica gel flexible refractory blanket; 10 - spray pipe; 11 - spray pipe interface; 12 - water inlet pipe; 13 - hose; 14 - rivet; 15 - steel gasket; 16 - water filling ring; 17 - semi-circular metal plate; 18 - bin wall; 19 - temperature sensor; 20 - flue gas sensor; 21 - steel pipe; 22 - ring; 23 - welding part; 24 - sewage outlet; 25 - overflow port; 26 - pressure relief valve; 27 - rotating shaft; 28 - wire reel; 29 - torsion spring; 30 - fire fighting pipeline; 31 - basement wall; 32 - fire extinguishing bin; 33 - basement top; 34 - basement charging parking space; 35 - top surface; 36 - bottom ring lifting ring; 37 - top frame lifting ring; 38 - drain valve; 39 - structural adhesive. Detailed implementation manners
[0035] The present invention will be described in detail below with reference to the accompanying drawings.
[0036] As Figure 1-3 shown, a new energy passenger vehicle fire extinguishing bin for an underground garage includes a bin body, the bin body includes an annular bin wall 18, a bottom ring 2 of the bin body arranged at the bottom end of the bin wall 18, a top frame 3 of the bin body arranged at the top of the bin wall 18, and a top surface 35 connected to the top frame 3 of the bin body. The top frame 3 of the bin body is connected to the basement top 33 of the underground garage through a top frame hanging steel cable 7. The top frame 3 of the bin body is provided with a lifting spring mechanism 1. The bottom ring 2 of the bin body includes a water filling ring 16 and a semi-circular metal plate 17 connected to the water filling ring 16. The inlet of the water filling ring 16 is connected to the fire fighting pipeline 30 of the underground garage through a flexible pipe fitting. The lifting spring mechanism 1 is connected with a bottom ring hanging steel cable 4, and the bottom ring hanging steel cable 4 is connected to the semi-circular metal plate 17. A spray pipe 10 is arranged at the lower end of the top surface 35, and the spray pipe 10 is connected to the fire fighting pipeline 30 of the underground garage through a water inlet pipe 12.
[0037] As Figure 4 shown, when in use, the present invention is arranged directly above the basement charging parking space 34 of the underground garage. The fire extinguishing bin 32 is connected to the basement top 33 through a top frame hanging steel cable 7, and the spray pipe 10 is connected to the fire fighting pipeline 30 through a water inlet pipe 12. Figure 4 It also includes a basement wall 31.
[0038] When a new energy vehicle catches fire, water is injected into the water filling ring 16. To prevent adverse deformation during water injection, water is injected simultaneously into the left and right inlets of the water filling ring 16. After the water filling ring 16 is filled with water, its weight gradually increases. When the gravity of the water filling ring 16 and the water inside it is greater than the elastic force of the lifting spring mechanism 1, the water filling ring 16 and the water inside it descend to the garage floor under their own weight, causing the bin body to open. The water filling ring 16 closely adheres to the ground of the charging parking space 34 in the basement, surrounding the burning electric vehicle in the middle of the bin body, effectively blocking the burning vehicle, forming a fire wall, and preventing the fire from spreading to surrounding vehicles. The bin body also has an explosion-proof function. At the same time, smoke is extinguished by spraying high-pressure atomized water through the high-pressure atomizing nozzles of the top spray pipe 10 into the bin body.
[0039] See Figure 12 , a pressure relief valve 26 is provided on the water filling ring 16, and this pressure relief valve 26 is located inside the bin body. After the water inside the water filling ring 16 is full and reaches a certain pressure, the pressure relief valve 26 automatically opens, injecting water into the bin body to soak the battery pack and cool down and extinguish the fire.
[0040] As Figure 14 shown, since the periphery of the bottom of the fire extinguishing bin is sealed by the water filling ring 16, during immersion fire extinguishing, the water filling ring 16 can cooperate well with the charging line cable, preventing a large amount of immersion cooling water from leaking. At the same time, the periphery of the bottom of the bin body can be assisted and compacted with fire sandbags to strengthen the seal and prevent heavy metal sewage from leaking. To prevent the pressure of the fire fighting pipeline 30 from being too high, resulting in poor cooperation between the water filling ring 16 and the charging line, the pressure of the pressure relief valve 26 should be reasonable, and the opening and closing size of the electric actuator valve of the fire fighting pipeline 30 should be reasonably adjusted to reasonably achieve pressure limitation.
[0041] In the present utility model, the top frame 3 of the bin body is made of steel round pipes. See Figure 9 、 Figure 12 , a semi-circular metal plate 17 is adhesively bonded to the water filling ring 16, and the semi-circular metal plate 17 is provided with a bottom ring lifting ring 36, and the bottom ring hanging steel cable 4 is connected to this bottom ring lifting ring 36. The semi-circular metal plate 17 plays a role in stabilizing and shaping the water filling ring 16, preventing abnormal deformation of the water filling ring 16 after water injection. As Figure 7 、 12 shown, the top frame 3 of the bin body is provided with a top frame lifting ring 37, and the top frame hanging steel cable 7 is connected to this top frame lifting ring 37. The flexible pipe fitting connected to the inlet of the water filling ring 16 can be a fire hose 13.
[0042] As Figure 13As shown in the figure, the lifting spring mechanism 1 includes a housing, a rotating shaft 27 rotatably connected inside the housing, two wire reels 28 arranged at the left and right ends of the rotating shaft 27, and a torsion spring 29 arranged on the rotating shaft 27. The torsion spring 29 is connected between the rotating shaft 27 and the wire reel 28, and the bottom loop hanging steel cable 4 is wound around the wire reel 28. After the water filling ring 16 is filled with water, the gravity of the water filling ring 16 and the water is greater than the elastic force of the torsion spring 29, and the bottom loop hanging steel cable 4 is lowered, so that the water filling ring 16 is in contact with the ground.
[0043] As Figure 1 , Figure 3 shown, multiple transverse strengthening steel cables 6 are arranged on the outer side of the bin wall 18, and multiple bottom loop hanging steel cables 4 are provided. A steel cable limit buckle 5 is connected at the intersection of the transverse strengthening steel cable 6 and the bottom loop hanging steel cable 4. During the working process, after the bin body is filled with water, the steel cable limit buckle 5 plays a role in strengthening the bin wall 18 and preventing the bag from swelling.
[0044] As Figure 5 , 10 , 11 shown, the steel cable limit buckle 5 includes a transverse steel pipe 21 and a circular ring 22 welded to the side of the steel pipe 21. The transverse strengthening steel cable 6 passes through the steel pipe 21, and the bottom loop hanging steel cable 4 passes through the circular ring 22. A steel plate is welded to the steel pipe 21, and the steel plate is connected to the bin wall 18 through structural adhesive. A welding part 23 is arranged between the side of the steel pipe 21 and the circular ring 22.
[0045] As Figure 6 shown, the bin wall 18 is composed of an inorganic refractory blanket 8 and a silicone flexible refractory blanket 9 located outside the inorganic refractory blanket 8. The inorganic refractory blanket 8 and the silicone flexible refractory blanket 9 are adhesively bonded, which can resist fire and prevent water leakage. The left and right ends of the inorganic refractory blanket 8 and the silicone flexible refractory blanket 9 are connected through structural adhesive 39 and rivets 14 to form a circular bin wall 18. A steel gasket 15 is arranged between the rivet 14 and the bin wall 18. The bin wall 18 and the water filling ring 16 are bonded with a high-temperature resistant structural adhesive.
[0046] See Figure 2 , Figure 8 , the top surface 35 is an inorganic refractory blanket 8 layer, and the spray interface 11 of the spray pipe 10 extends upward through the inorganic refractory blanket 8 layer. The inorganic refractory blanket 8 layer at the top restricts the leakage of toxic and harmful smoke and gas and prevents the spread of fire to the upper buildings.
[0047] As Figure 1 shown, the bin wall 18 is provided with a sewage outlet 24 and an overflow port 25, and the water filling ring 16 is provided with an air inflation and drainage valve 38. The overflow port 25 plays a role in limiting the immersion water level, and can overflow and drain water while injecting water, reasonably controlling the cooling water temperature of the battery pack. Then the cooling water is collected and treated through the overflow pipe. After the fire extinguishing is completed, the accident sewage can be pumped out from the sewage outlet 24 of the fire extinguishing bin by a sewage truck and handed over to a professional department for treatment.
[0048] As Figure 1 shown, the silo body is also provided with a flue gas sensor 20 and a temperature sensor 19. It also includes an automatic control circuit for the fire extinguishing silo. When an electric vehicle catches fire at the charging parking space in the underground garage, the flue gas sensor 20 and the temperature sensor 19 transmit signals to the automatic control circuit of the fire extinguishing silo, and the automatic control circuit of the fire extinguishing silo starts to work, and the fire hydrant actuator valve opens to spray and inject water into the silo body.
[0049] The silo body of the present utility model unfolds downward without an electric drive device and is completed by injecting water into the water filling ring 16, with less external intervention and high reliability. The present utility model is mainly used in the underground garage of a community where a conventional fire truck cannot enter, or in a public electric vehicle shed, installed on the ceiling and matched with the corresponding charging shed.
[0050] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present utility model, rather than a limitation on the protection scope of the present utility model. Any simple modification or equivalent replacement made by those of ordinary skill in the art to the technical solution of the present utility model does not depart from the essence and scope of the technical solution of the present utility model.
Claims
1. A fire extinguishing chamber for a new energy passenger car in an underground garage, comprising a chamber body, characterized in that: The warehouse body includes an annular warehouse wall, a warehouse body bottom ring arranged at the bottom end of the warehouse wall, a warehouse body top frame arranged at the top of the warehouse wall and a top surface connected to the warehouse body top frame, the warehouse body top frame is connected to the basement roof of the underground garage through a top frame hanging steel cable, the warehouse body top frame is provided with a lifting spring mechanism, the warehouse body bottom ring includes a water-filled ring and a semicircular metal plate connected to the water-filled ring, the inlet of the water-filled ring is connected to the fire-fighting pipe of the underground garage through a soft pipe fitting, the lifting spring mechanism is connected to the bottom ring hanging steel cable, the bottom ring hanging steel cable is connected to the semicircular metal plate, and a spray pipe is provided at the lower end of the top surface, and the spray pipe is connected to the fire-fighting pipe of the underground garage through a water inlet pipe.
2. The fire extinguishing cabin for new energy passenger vehicles used in underground garages according to claim 1 is characterized in that: The water-filled ring is provided with a pressure release valve, and the pressure release valve is located in the warehouse body.
3. The fire extinguishing cabin for new energy passenger vehicles used in underground garages according to claim 1 is characterized in that: The lifting spring mechanism includes a shell, a rotating shaft rotatably connected to the shell, two take-up wheels arranged at the left and right ends of the rotating shaft, and a torsion spring arranged on the rotating shaft. The torsion spring is connected between the rotating shaft and the take-up wheel, and the bottom ring hanging steel cable is wound on the take-up wheel.
4. The fire extinguishing chamber for new energy passenger vehicles used in underground garages according to claim 1 is characterized in that: A plurality of transverse reinforcing steel cables are arranged on the outer side of the warehouse wall, a plurality of bottom ring hanging steel cables are arranged, and a steel cable limiting buckle is connected at the intersection of the transverse reinforcing steel cable and the bottom ring hanging steel cable.
5. The fire extinguishing cabin for new energy passenger vehicles used in underground garages according to claim 4 is characterized in that: The steel cable limit buckle comprises a transverse steel pipe and a circular ring welded to the side of the steel pipe, the transverse reinforcing steel cable is passed through the steel pipe, and the bottom ring hanging steel cable is passed through the circular ring.
6. The fire extinguishing chamber for new energy passenger vehicles used in underground garages according to claim 1 is characterized in that: The warehouse wall is composed of an inorganic refractory blanket and a silicone flexible refractory blanket located outside the inorganic refractory blanket. The inorganic refractory blanket is glued to the silicone flexible refractory blanket. The left and right ends of the inorganic refractory blanket and the silicone flexible refractory blanket are connected by structural glue and rivets to form an annular warehouse wall.
7. The fire extinguishing cabin for new energy passenger vehicles used in underground garages according to claim 1 is characterized in that: The top surface is an inorganic refractory blanket layer, and the spray pipe interface of the spray pipe extends upward through the inorganic refractory blanket layer.
8. The fire extinguishing cabin for new energy passenger vehicles used in underground garages according to claim 1 is characterized in that: The top frame of the warehouse body is provided with a top frame lifting ring, the top frame hanging steel cable is connected to the top frame lifting ring, the semicircular metal plate is glued to the water-filled ring, the semicircular metal plate is provided with a bottom ring lifting ring, and the bottom ring hanging steel cable is connected to the bottom ring lifting ring.
9. The fire extinguishing cabin for new energy passenger vehicles used in underground garages according to claim 1 is characterized in that: The warehouse wall is provided with a sewage outlet and an overflow outlet, and the water-filled ring is provided with an air-filled drainage valve.
10. The fire extinguishing chamber for new energy passenger vehicles used in underground garages according to claim 1 is characterized in that: The warehouse body is also provided with a smoke sensor and a temperature sensor.