High-pressure cascade valve hall type energy storage fire extinguishing system

Abstract

The invention discloses a high-pressure cascade valve hall type energy storage fire extinguishing system which is characterized in that a high-pressure cascade valve hall comprises a plurality of energy storage valve towers, each energy storage valve tower is formed by stacking a plurality of energy storage modules, and each energy storage module is composed of a high-pressure system formed by connecting a plurality of battery modules in series and in parallel and a single H-bridge module; the interior of the high-pressure cascade valve hall is divided into a plurality of independent fireproof subareas through fire-fighting subarea firewalls, and a plurality of energy storage valve towers are arranged in each fireproof subarea. The fire-fighting design system comprises a fire-fighting system and a plurality of anti-explosion smoke exhaust devices, and the fire detection device is connected with the high-pressure cascade valve hall; the anti-explosion smoke exhaust device and the fire detection device are arranged at the top of each fireproof zone and used for achieving anti-explosion smoke exhaust and fire characteristic gas detection of the fireproof zones. Multi-level fire-fighting detection, efficient fire-fighting extinguishment and thermal runaway fireproof isolation protection are effectively carried out, and it is ensured that the huge risk that local thermal runaway affects an adjacent energy storage valve tower and large-area thermal runaway of the whole energy storage valve hall occurs is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of energy storage fire fighting design, and in particular to a high-pressure cascade valve hall type energy storage fire fighting system. Background Art

[0002] High-voltage cascade technology is a topology used in energy storage systems. Its main advantage is that it can directly output high voltage without going through a transformer. High-voltage cascade technology reduces system losses and improves efficiency while reducing land construction costs and increasing energy density per unit construction area. High-voltage cascade valve hall energy storage is the best solution to the current problem, that is, a storage integration method that integrates core energy storage equipment such as battery systems into a multi-layer tower structure and places it in the valve hall of a building.

[0003] Judging from the current technology development trend, high-pressure cascade energy storage systems will be more widely used. However, the current high-pressure cascade valve hall energy storage has the following key safety issues:

[0004] Larger capacity and larger number of lithium batteries are concentrated in the indoor valve hall space. The voltage level of high-voltage cascade energy storage is higher, and the electromagnetic environment is complex. Fire safety is the first technical problem that needs to be solved. At the same time, lithium battery fire is a gas-liquid composite combustion that spreads rapidly, and thermal runaway is an electrochemical reaction that can continue spontaneously. It is difficult to prevent re-ignition after extinguishing the fire. Therefore, the fire protection design of the high-voltage cascade valve hall type energy storage valve hall must not only have accurate fire detection design and efficient fire extinguishing system, but also consider how to effectively protect and isolate thermal runaway, to ensure that local thermal runaway will not affect the adjacent energy storage valve tower and cause more losses and the huge risk of large-scale thermal runaway of the entire energy storage valve hall. At present, conventional prefabricated cabin energy storage fire protection technology cannot meet current requirements.

[0005] At present, conventional fire protection uses outdoor prefabricated cabins and outdoor cabinets as the basic fire protection units. The fire protection space is small and the number of internal batteries is small, which makes it easy to achieve fire detection and fire fighting by flooding and submerging fire fighting agents. The high-voltage cascade valve hall-type energy storage space and the number of battery cells are huge, making it difficult to achieve fire fighting by flooding with fire fighting agents and sprinkler water. Conventional fire protection uses outdoor prefabricated cabins and outdoor cabinets as the basic fire protection units. A safe fire protection distance is maintained between each outdoor prefabricated cabin and outdoor cabinet to effectively avoid the expansion of thermal runaway. If the high-voltage cascade valve hall-type energy storage retains a larger fire safety distance, the indoor space will be greatly increased, the cost will increase and the power density will decrease. At the same time, the increase in space will further increase the difficulty of fire fighting. Summary of the invention

[0006] The purpose of the present invention is to provide a high-pressure cascade valve hall-type energy storage fire protection system, which solves the problem of preventing the spread of internal thermal runaway of high-pressure cascade valve hall-type energy storage and the problem of fire detection and fire extinguishing in complex electromagnetic interference environments, and has high engineering application value.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] A high-pressure cascade valve hall type energy storage fire protection system is applied to a high-pressure cascade valve hall. The high-pressure cascade valve hall includes a plurality of energy storage valve towers, which are stacked with a plurality of energy storage modules. The energy storage module is composed of a high-voltage system formed by a plurality of battery modules connected in series and parallel and a single H-bridge module. The interior of the high-pressure cascade valve hall is divided into a plurality of independent fire partitions by a fire partition firewall, and a plurality of energy storage valve towers are arranged in each fire partition.

[0009] The high-pressure cascade valve hall-type energy storage fire protection system includes fire protection devices, explosion-proof smoke exhaust devices, fire detection devices, and external fire protection medium supply devices installed in each fire protection zone. The explosion-proof smoke exhaust device and fire detection device are installed on the top of the fire protection zone, and are used to realize the explosion-proof smoke exhaust and fire characteristic parameter detection of the fire protection zone respectively; the fire protection device includes a fire detection box, a fire detection gas pipe, and a fire branch pipe;

[0010] Each energy storage module is equipped with a fire-fighting device. The fire detection air pipe and the fire branch pipe are respectively set inside the energy storage module and extend to each battery module and H-bridge module. The fire detection air pipe is connected to the fire detection box. The fire detection box uses a suction method to detect the gas at each battery module and H-bridge module. The fire branch pipe is connected to the external fire medium supply device, which provides fire medium.

[0011] Preferably, the external fire-fighting medium supply device includes a centralized fire-fighting host system and a liquid fire-fighting supply device, wherein the centralized fire-fighting host system is used to provide high-efficiency fire-fighting agents, and the liquid fire-fighting supply device is a fire hydrant or a fire-fighting water pool;

[0012] The first-level fire-fighting pipeline and the second-level fire-fighting pipeline are arranged between the centralized fire-fighting host system and the fire-fighting branch pipe. The first-level fire-fighting pipeline and the second-level fire-fighting pipeline are also arranged between the liquid fire-fighting supply device and the fire-fighting branch pipe. The first-level fire-fighting pipeline connecting the liquid fire-fighting supply device and the energy storage valve tower is provided with a liquid supply device electric valve, and the first-level fire-fighting pipeline connecting the centralized fire-fighting host system and the energy storage valve tower is provided with a centralized fire-fighting host electric valve.

[0013] Preferably, the fire detection air pipe includes fire detection air pipe one and fire detection air pipe two; an air suction device and a gas detection device are arranged inside the fire detection box; wherein the gas detection device is used to detect the characteristics of the inhaled gas.

[0014] Preferably, the secondary fire-fighting pipeline at the top of the energy storage valve tower is provided with a plurality of open fire-fighting sprinklers for spraying high-efficiency fire-extinguishing agents or fire-fighting water after a fire occurs.

[0015] Preferably, the fire detection air pipe is made of insulating plastic material and has no electrical signal transmission; each battery module and H-bridge module in the energy storage valve tower is connected to the fire detection box through the insulating fire detection air pipe 1 and the fire detection air pipe 2.

[0016] Preferably, the explosion-proof smoke exhaust device includes an explosion-proof smoke exhaust fan and electric exhaust shutters installed on the top of each fire partition, and the fire detection device includes an infrared fire detector, a CO concentration detector, a VOS concentration detector, an H2 concentration detector, a temperature-sensing fire detector, and a smoke fire detector arranged on the top of each fire partition.

[0017] Preferably, the height of the fire wall of the fire partition is flush with the valve hall roof, and the valve hall roof is a flat structure; an inspection door and an observation window are provided at the bottom of each fire partition, which form a waterproof and fireproof sealed space when closed.

[0018] Preferably, ground electric air inlet shutters are installed underground in each fire compartment, which are connected to the external fresh air system through underground air supply ducts to provide air that has been dust-removed, dehumidified and temperature-controlled.

[0019] Preferably, the energy storage valve tower realizes insulation and weight support between energy storage modules through supporting insulators.

[0020] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0021] (1) Compared with the existing conventional energy storage fire fighting technology, the high-pressure cascade valve hall type energy storage valve hall fire fighting system designed by the present invention solves the fire fighting problem of a large number of battery modules and energy storage valve towers in the valve hall. By dividing the interior of the high-pressure cascade valve hall into several independent fire protection zones, the fire detection sensors are all far away from the battery modules to avoid complex electromagnetic interference. Each zone has independent air supply and exhaust channels and exhaust equipment, and uses perfluorohexanone and fire water for dual fire fighting and shares fire fighting pipes. The present invention solves the problem of preventing the spread of thermal runaway inside the high-pressure cascade valve hall type energy storage, and the problems of fire detection and how to extinguish fire in a complex electromagnetic interference environment, and has high engineering application value.

[0022] (2) The present invention discloses a high-pressure cascade valve hall type energy storage fire protection system, which can effectively carry out multi-level fire detection, high-efficiency fire extinguishing and thermal runaway fire isolation protection, ensuring that local thermal runaway will not affect the adjacent energy storage valve tower and the huge risk of large-scale thermal runaway of the entire energy storage valve hall. Fire-related sensors are all far away from areas with complex electromagnetic environments such as battery modules, and have high practical engineering application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a top view of the layout of the high-pressure cascade valve hall-type energy storage fire fighting system of the present invention;

[0025] Figure 2 It is a side view of the fire partition layout of the present invention;

[0026] Figure 3 It is a top view of the fire partition layout of the present invention;

[0027] Figure 4 This is a schematic diagram of the fire protection design of the energy storage valve tower of the present invention;

[0028] Among them, 1- high-voltage cascade valve hall, 2- valve hall wall, 3- fire partition, 4- fire partition firewall, 5- energy storage valve tower, 6- explosion-proof smoke exhaust fan, 7- electric exhaust shutters, 8- infrared fire detector, 9- CO concentration detector, 10- VOS concentration detector, 11- H2 concentration detector, 12- temperature fire detector, 13- smoke fire detector, 14- maintenance door, 15- ground electric air inlet shutters, 16- underground air supply duct, 17- liquid supply device, 18- centralized fire host system, 19- liquid supply device electric valve, 20- centralized fire host electric valve, 21- fire primary pipeline, 22- fire secondary pipeline, 23- fire branch pipe, 24- open fire sprinkler, 25- fire detection box, 26- fire detection gas pipe one, 27- fire detection gas pipe two, 28- battery module, 29- support insulator, 30- H bridge module, 31- energy storage module. DETAILED DESCRIPTION

[0029] 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.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1-Figure 4As shown, a high-pressure cascade valve hall type energy storage fire protection system provided by the present invention is applied to a high-pressure cascade valve hall 1. The high-pressure cascade valve hall 1 includes a plurality of energy storage valve towers 5. The energy storage valve towers 5 are stacked by a plurality of energy storage modules. The energy storage module 31 is composed of a high-voltage system formed by connecting a plurality of battery modules 28 in series and in parallel and a single H-bridge module 30. The interior of the high-pressure cascade valve hall is divided into a plurality of independent fire partitions 3 by fire partition firewalls. A plurality of energy storage valve towers 5 are arranged in each fire partition 3.

[0032] The high-pressure cascade valve hall-type energy storage fire protection system includes fire protection devices, explosion-proof smoke exhaust devices, fire detection devices, and external fire protection medium supply devices arranged in each fire protection zone 3. The explosion-proof smoke exhaust device and the fire detection device are arranged on the top of the fire protection zone, and are used to realize the explosion-proof smoke exhaust and fire characteristic parameter detection of the fire protection zone respectively; the fire protection device includes a fire detection box 25, a fire detection gas pipe, and a fire branch pipe 23;

[0033] Each energy storage module 31 is equipped with a fire-fighting device. The fire detection air pipe and the fire branch pipe 23 are respectively set inside the energy storage module 31 and extend to each battery module 28 and the H-bridge module 30. The fire detection air pipe is connected to the fire detection box 25. The fire detection box 25 uses an air suction method to detect the gas at each battery module 28 and the H-bridge module 30. The fire branch pipe 23 is connected to an external fire-fighting medium supply device, and the external fire-fighting medium supply device provides fire-fighting medium.

[0034] Furthermore, the external fire-fighting medium supply device includes a centralized fire-fighting host system 18 and a liquid fire-fighting supply device 17, wherein the centralized fire-fighting host system 18 is used to provide high-efficiency fire-fighting agents, and the liquid fire-fighting supply device 17 is a fire hydrant or a fire-fighting water pool;

[0035] The first-level fire-fighting pipeline 21 and the second-level fire-fighting pipeline 22 are arranged between the centralized fire-fighting host system 18 and the fire-fighting branch pipe 23. The first-level fire-fighting pipeline 21 and the second-level fire-fighting pipeline 22 are also arranged between the liquid fire-fighting supply device 17 and the fire-fighting branch pipe 23. The first-level fire-fighting pipeline 21 connecting the liquid fire-fighting supply device 17 and the energy storage valve tower 5 is provided with a liquid supply device electric valve 19, and the first-level fire-fighting pipeline 21 connecting the centralized fire-fighting host system 18 and the energy storage valve tower 5 is provided with a centralized fire-fighting host electric valve 20.

[0036] Furthermore, the fire detection air pipe includes a fire detection air pipe 1 26 and a fire detection air pipe 2 27; an air suction device and a gas detection device are arranged inside the fire detection box 25; wherein, the air suction device can adopt a fan, and the gas detection device is used to detect the characteristics of the inhaled gas.

[0037] Furthermore, the fire detection air pipe is made of insulating plastic and has no electrical signal transmission; each battery module 28 and H-bridge module 30 in the energy storage valve tower 5 is connected to the fire detection box 25 through the insulating fire detection air pipe 1 26 and the fire detection air pipe 2 27.

[0038] Specifically, each battery module 28 is connected to the fire detection box 25 through an insulated fire detection gas pipe in the energy storage valve tower 5. The gas detection device in the box includes fire characteristic gas detection sensors such as smoke, CO, H2, VOC, etc.

[0039] Specifically, the external fire hydrant / fire water tank and the centralized fire host system 18 share the energy storage fire primary pipeline 21, the fire secondary pipeline 22 and the fire branch pipe 23. The centralized fire host system 18 uses a high-efficiency fire extinguishing agent of the perfluorohexanone type with heat absorption and chemical fire suppression capabilities that does not damage the power equipment. The centralized fire host system 18 and the external fire hydrant / fire water tank are in parallel relationship on the pipeline.

[0040] Furthermore, the secondary fire-fighting pipeline 22 at the top of the energy storage valve tower 5 is provided with a plurality of open fire-fighting sprinklers 24 for spraying high-efficiency fire-extinguishing agents and fire-fighting water after a fire occurs.

[0041] Furthermore, the explosion-proof smoke exhaust device includes an explosion-proof smoke exhaust fan 6 and an electric exhaust shutter 7 installed on the top of each fire partition. The electric exhaust shutter 7 is in a normally closed state during normal operation; the fire detection device includes an infrared fire detector 8, a CO concentration detector 9, a VOS concentration detector 10, a H2 concentration detector 11, a temperature fire detector 12, a smoke fire detector 13, etc., which are arranged on the top of each fire partition.

[0042] Furthermore, the height of the fire wall of the fire compartment 3 is flush with the valve hall roof, and the valve hall roof is a flat structure; an inspection door 14 and an observation window are provided at the bottom of each fire compartment 3, which form a waterproof and fireproof sealed space when closed.

[0043] Furthermore, each fire compartment 3 is provided with ground electric air inlet shutters 15 underground, which are connected to the external fresh air system through underground air supply ducts 16 to provide air that has been dust-removed, dehumidified and temperature-controlled.

[0044] Furthermore, the energy storage valve tower 5 realizes insulation and weight support between the energy storage modules 31 through the support insulator 29 .

[0045] Specifically, in order to solve the fire detection, fire extinguishing and protection problems of the high-voltage cascade valve hall type energy storage system, the present invention discloses a high-voltage cascade valve hall type energy storage valve hall fire protection design system. The valve hall is divided into several fire partitions. The valve hall wall 2 adopts a three-layer structure, the inner and outer walls are made of concrete blocks, and the middle layer is filled with highly flame-retardant rock wool. Each partition fire wall adopts a three-layer structure, the outer and inner layers are made of lightweight and insulating aluminum nitride ceramic materials, and the middle interlayer is made of alumina fiber. The barrier properties and high reflectivity of the materials on both sides are used to reduce thermal conductivity, and heat is convectively conducted in the middle rock wool layer / alumina fiber. Due to the ultra-low thermal conductivity and flame retardant properties, it is not easy to transfer heat to the outer layer, thereby achieving the effect of thermal insulation and fire prevention. Thermal runaway in each fire partition will not spread to the adjacent fire partition 3.

[0046] The height of the firewall of fire compartment 3 is flush with the valve hall roof. The valve hall roof adopts a flat structure to avoid the accumulation of combustible gas. Each fire compartment is provided with an inspection door 14 and an observation window, so that the operating status of the fire compartment can be observed from the outside and maintenance can be carried out. An explosion-proof smoke exhaust fan 6 and an electric exhaust louver 7 are installed on the top of each fire partition 3. An infrared fire detector 8, a CO concentration detector 9, a VOS concentration detector 10, a H2 concentration detector 11, a temperature-sensing fire detector 12, a smoke-sensing fire detector 13, etc. are installed on the top of each fire partition, and a safe distance is maintained from the energy storage valve tower 5 to avoid electromagnetic interference caused by the energy storage valve tower 5. An air supply duct 16 is pre-buried in the underground of the valve hall. The air supply duct is connected to the ground electric air inlet louver 15 inside and is connected to the fresh air system outside. When it is detected that the temperature in the fire partition space is too high or the concentration of combustible gas is too high, the ground electric air inlet louver 15 is opened, and the low-temperature air that has been dusted and dehumidified by the external fresh air system is sent into the lower part of the energy storage valve tower 5 inside the fire partition 3 through the underground air supply duct 16, and the explosion-proof smoke exhaust fan 6 on the top of the fire partition is started to discharge the air to the external space of the high-pressure cascade valve hall 1, ensuring that the temperature and humidity inside each fire partition 3 are within a constant range and the concentration of combustible gas is within a safe range.

[0047] The energy storage valve tower 5 adopts an air suction fire detection, and connects each battery module 28 and H-bridge module 30 in the energy storage module 31 to the fire detection box 25 through an insulated fire detection air pipe 1 26 and a fire detection air pipe 2 27. The fire detection air pipe is made of insulating plastic and does not transmit any electrical signals. The fire detection box 25 is away from areas with strong electromagnetic radiation such as the energy storage module 31. The fire detection box 25 has an integrated air suction device and CO / H2 / VOC / smoke and other fire detection sensors to perform early fire detection on the inhaled gas. Firefighting pipelines are arranged inside the valve tower, including battery module / H-bridge module-firefighting branch pipe-secondary firefighting pipeline-primary firefighting pipeline-external fire hydrant / fire water tank interface. The primary firefighting pipeline 21 is also connected in parallel to the centralized firefighting host system 18. The secondary firefighting pipeline 22 on the top of the valve tower is arranged with multiple open firefighting nozzles 24. There are normally closed electric valves between the primary firefighting pipeline 21 and the centralized firefighting host system 18 and the external fire hydrant / fire water tank 17 interface. When thermal runaway occurs, the circuit of the energy storage valve tower 4 in the fire partition 3 is disconnected first, and the centralized firefighting host electric valve 20 is opened. The centralized firefighting host system 18 is started first to transport the perfluorohexanone firefighting agent to each battery module 28 and the H-bridge module 30 through the firefighting pipeline. At the same time, the open nozzle on the top of the energy storage valve tower 5 synchronously sprays the firefighting agent for internal and external double fire extinguishing. Perfluorohexanone and other cooling and chemical fire suppression firefighting agents that do not damage electrical equipment are preferably used. If re-ignition occurs after the first round of fire extinguishing, open the electric valve 19 of the liquid supply device, fill the battery module 28 and the H-bridge module 30 with water, and spray fire water on the top of the valve tower for two rounds of continuous fire extinguishing until the fire is extinguished without re-ignition. At the same time, the firewall of the fire compartment 3 performs effective fire prevention and diffusion isolation to avoid heat diffusion, thereby ensuring the fire safety of the high-pressure cascade valve hall energy storage.

[0048] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0049] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A high-pressure cascade valve hall type energy storage fire fighting system, applied to a high-pressure cascade valve hall, the high-pressure cascade valve hall includes a plurality of energy storage valve towers, the energy storage valve towers are stacked by a plurality of energy storage modules, the energy storage module is composed of a high-voltage system formed by a plurality of battery modules connected in series and parallel and a single H-bridge module, characterized in that: The interior of the high-pressure cascade valve hall is divided into multiple independent fire partitions by fire partition firewalls, and a number of energy storage valve towers are arranged in each fire partition; The high-pressure cascade valve hall-type energy storage fire protection system includes fire protection devices, explosion-proof smoke exhaust devices, fire detection devices, and external fire protection medium supply devices arranged in each fire protection zone. The explosion-proof smoke exhaust devices and fire detection devices are arranged on the top of the fire protection zone, and are respectively used to realize the explosion-proof smoke exhaust and fire characteristic parameter detection of the fire protection zone; the fire protection device includes a fire detection box, a fire detection gas pipe, and a fire branch pipe; Each of the energy storage modules is equipped with a fire-fighting device. The fire-fighting detection air pipe and the fire-fighting branch pipe are respectively arranged inside the energy storage module and extend to each battery module and H-bridge module. The fire-fighting detection air pipe is connected to the fire-fighting detection box. The fire-fighting detection box detects the gas at each battery module and H-bridge module in an air suction manner. The fire-fighting branch pipe is connected to the external fire-fighting medium supply device, and the external fire-fighting medium supply device provides fire-fighting medium.

2. A high-pressure cascade valve hall-type energy storage fire fighting system according to claim 1, characterized in that: The external fire-fighting medium supply device includes a centralized fire-fighting host system and a liquid fire-fighting supply device, wherein the centralized fire-fighting host system is used to provide high-efficiency fire-fighting agents, and the liquid fire-fighting supply device is a fire hydrant or a fire-fighting water pool; The first-level fire-fighting pipeline and the second-level fire-fighting pipeline are arranged between the centralized fire-fighting host system and the fire-fighting branch pipe, and the first-level fire-fighting pipeline and the second-level fire-fighting pipeline are also arranged between the liquid fire-fighting supply device and the fire-fighting branch pipe; the first-level fire-fighting pipeline connecting the liquid fire-fighting supply device and the energy storage valve tower is provided with a liquid supply device electric valve, and the first-level fire-fighting pipeline connecting the centralized fire-fighting host system and the energy storage valve tower is provided with a centralized fire-fighting host electric valve.

3. A high-pressure cascade valve hall-type energy storage fire fighting system according to claim 2, characterized in that: The secondary fire-fighting pipeline at the top of the energy storage valve tower is provided with a plurality of open fire-fighting nozzles for spraying high-efficiency fire-fighting agents or fire-fighting water after a fire occurs.

4. A high-pressure cascade valve hall-type energy storage fire fighting system according to claim 1, characterized in that: The fire detection gas pipe comprises a fire detection gas pipe 1 and a fire detection gas pipe 2; an air suction device and a gas detection device are arranged inside the fire detection box; wherein the gas detection device is used to detect the characteristics of the inhaled gas.

5. A high-pressure cascade valve hall-type energy storage fire fighting system according to claim 4, characterized in that: The fire detection air pipe is made of insulating plastic and has no electrical signal transmission; each battery module and H-bridge module in the energy storage valve tower is connected to the fire detection box through the insulating fire detection air pipe 1 and the fire detection air pipe 2.

6. A high-pressure cascade valve hall-type energy storage fire fighting system according to claim 1, characterized in that: The explosion-proof smoke exhaust device includes an explosion-proof smoke exhaust fan and electric exhaust shutters installed on the top of each fire partition, and the fire detection device includes an infrared fire detector, a CO concentration detector, a VOS concentration detector, an H2 concentration detector, a temperature-sensing fire detector, and a smoke fire detector arranged on the top of each fire partition.

7. A high-pressure cascade valve hall-type energy storage fire fighting system according to claim 1, characterized in that: The height of the fire wall of the fire compartment is flush with the valve hall roof, and the valve hall roof is a flat structure; an inspection door and an observation window are provided at the bottom of each fire compartment, which form a waterproof and fireproof sealed space when closed.

8. A high-pressure cascade valve hall-type energy storage fire fighting system according to claim 1, characterized in that: Each fire compartment is provided with ground electric air inlet shutters underground, which are connected to the external fresh air system through underground air supply ducts to provide air that has been dust-removed, dehumidified and temperature-controlled.

9. A high-pressure cascade valve hall-type energy storage fire fighting system according to claim 1, characterized in that: The energy storage valve tower realizes insulation and weight support between energy storage modules through supporting insulators.

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