Perfluorohexanone high-pressure water mist double fire extinguishing system for energy storage power station

Abstract

The utility model relates to the technical field of fire fighting, in particular to a perfluorohexanone high-pressure water mist double fire extinguishing system for an energy storage power station, which comprises an equipment cabin, an energy storage cabin and a high-pressure pipeline, and a perfluorohexanone fire extinguishing unit and a high-pressure water mist fire extinguishing unit are arranged in the equipment cabin. The perfluorohexanone fire extinguishing unit and the high-pressure water mist fire extinguishing unit are communicated with a high-pressure pipeline, and a control cabinet and a cleaning unit communicated with the high-pressure pipeline are further arranged in the equipment cabin. A cabin-level spraying unit and a cluster-level spraying unit are arranged in the energy storage cabin, the high-pressure pipeline is communicated with a plurality of partition pipelines, the partition pipelines extend into the energy storage cabin, and the cabin-level spraying unit and the cluster-level spraying unit are communicated with the partition pipelines. According to the utility model, a double fire extinguishing mode is adopted, so that fire in the energy storage cabin can be effectively extinguished, the fire in the energy storage cabin can be effectively inhibited, the fire extinguishing effect is good, and the safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection, in particular to a perfluorohexanone high-pressure fine water mist dual fire extinguishing system for an energy storage power station. Background Art

[0002] As people's demand for energy continues to grow, energy storage technology is gaining increasing attention. Energy storage capsules are an emerging energy storage technology, boasting advantages such as high energy density, rapid charge and discharge, long life, and safety and reliability. Consequently, they are widely used in the new energy sector. Energy storage capsules are a new type of energy storage technology, typically prefabricated in equipment cabins, available in 20-foot and 40-foot sizes. They utilize advanced power electronics, battery, and thermal management technologies to integrate battery packs, management systems, and cooling systems within a sealed cabin, creating a prefabricated, modular, intelligent, and systematic energy storage system.

[0003] Energy storage compartments utilize high-performance lithium battery materials with high energy density, allowing them to store more energy within a limited space. This makes them susceptible to thermal runaway, a phenomenon in which both the internal current and temperature of a lithium-ion battery increase and mutually reinforce each other. The electrolyte and separator within lithium-ion batteries are flammable. At different states of charge, the positive and negative electrode materials can act as oxidants and reductants, respectively, making them susceptible to spontaneous combustion after a short circuit. Batteries can also be heated by internal or external heat sources, potentially triggering fires. Energy storage power stations consist of several storage compartments, each of which is typically designed with an independent automatic fire extinguishing system. Each battery module (pack) is designed with a sprinkler for localized protection, while the energy storage compartment roof is designed with cabin-level sprinklers for full flooding protection. The existing fire extinguishing system in the energy storage cabin is to fill heptafluoropropane or perfluorohexanone in a cylinder. When a fire occurs, heptafluoropropane or perfluorohexanone is sprayed from the cylinder. The cylinder has a volume of 70L and a pressure of 2.5MPa. The amount of fire extinguishing agent in the cylinder is small and is generally sprayed out in 10 seconds. After spraying, it cannot be replenished in time, which leads to the problem of not being able to effectively extinguish the fire in the energy storage cabin. Although the energy storage cabin is equipped with a water sprinkler interface, it needs to be manually connected to the fire hydrant supply pipe. When the fire gets out of control, the energy storage cabin is at risk of explosion at any time, and manual connection to the fire hydrant supply pipe is life-threatening. Summary of the Invention

[0004] In order to solve the problem that the existing fire extinguishing system in the energy storage cabin cannot effectively extinguish the fire and the fire extinguishing effect is not ideal, the utility model provides a perfluorohexanone high-pressure fine water mist double fire extinguishing system for an energy storage power station. The system adopts a double fire extinguishing method to effectively extinguish the fire in the energy storage cabin, so that the fire in the energy storage cabin can be effectively suppressed, the fire extinguishing effect is good, and the safety is high.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a perfluorohexanone high-pressure fine water mist dual fire extinguishing system for an energy storage power station, comprising an equipment cabin, an energy storage cabin, and a high-pressure pipeline. A perfluorohexanone fire extinguishing unit and a high-pressure fine water mist fire extinguishing unit are provided inside the equipment cabin, and the perfluorohexanone fire extinguishing unit and the high-pressure fine water mist fire extinguishing unit are connected to the high-pressure pipeline. A control cabinet and a cleaning unit connected to the high-pressure pipeline are also provided inside the equipment cabin. The perfluorohexanone fire extinguishing unit and the high-pressure fine water mist fire extinguishing unit respectively spray perfluorohexanone and high-pressure fine water mist into the equipment cabin through the high-pressure pipeline to achieve the effect of extinguishing the fire; after the fire is extinguished, the cleaning unit can be used to clean up the fire extinguishing agent remaining in the high-pressure pipeline.

[0006] The energy storage compartment is equipped with a cabin-level spray unit and a cluster-level spray unit. The high-pressure pipeline is connected to multiple partition pipelines, which extend into the interior of the energy storage compartment. The cabin-level spray unit and the cluster-level spray unit are connected to the partition pipelines. If a fire occurs in a battery cluster, the cluster-level spray unit can be used to spray perfluorohexanone fire extinguishing agent on all battery packs in the battery cluster. If the battery cluster fire is not effectively controlled and spreads to adjacent battery clusters, the cabin-level spray unit will continuously spray perfluorohexanone fire extinguishing agent on the battery cluster and the entire energy storage compartment. If the perfluorohexanone fire extinguishing agent is exhausted but the fire is not under control, the cabin-level spray unit and the cluster-level spray unit will spray high-pressure fine water mist and then cool down to extinguish the fire.

[0007] Furthermore, the perfluorohexanone fire extinguishing unit includes a liquid storage tank, a pressure regulating pipeline, and a perfluorohexanone pipeline. The perfluorohexanone pipeline is connected to the liquid storage tank and the high-pressure pipeline, and the pressure regulating pipeline is connected to the liquid storage tank and the perfluorohexanone pipeline. The perfluorohexanone pipeline is provided with a perfluorohexanone filter and a perfluorohexanone plunger pump, and the pressure regulating pipeline is provided with a perfluorohexanone pressure regulating valve. The liquid storage tank is used to store the perfluorohexanone fire extinguishing agent, the perfluorohexanone filter filters the perfluorohexanone fire extinguishing agent, and the perfluorohexanone plunger pump transports the perfluorohexanone fire extinguishing agent from the liquid storage tank through the perfluorohexanone pipeline to the high-pressure pipeline.

[0008] Furthermore, the perfluorohexanone pipeline is connected to a pressure-stabilizing pipeline, which is connected to the high-pressure pipeline and is equipped with a pressure-stabilizing pump. Both the perfluorohexanone pipeline and the pressure-stabilizing pipeline are equipped with a pressure transmitter and a one-way valve. The pressure-stabilizing pipeline and the pressure-stabilizing pump ensure that the high-pressure pipeline is continuously filled with low-pressure perfluorohexanone fire extinguishing agent.

[0009] Furthermore, the high-pressure water mist fire extinguishing unit includes a water tank, a water mist pressure regulating pipe, and a water mist pipe. The water mist pipe is connected to the water tank and the high-pressure pipe, and is equipped with a water filter and a water mist plunger pump. A pressure transmitter and a one-way valve are also provided on the water mist pipe. The water mist pressure regulating pipe is connected to the water tank and the water mist pipe, and is equipped with a water mist pressure regulating valve. The water tank is used to store water needed for fire extinguishing. The water filter filters the water delivered to the high-pressure pipe. The water mist plunger pump delivers water from the water tank to the high-pressure pipe via the water mist pipe.

[0010] Furthermore, the cleaning unit includes an outlet pipe and an air compressor. The two ends of the outlet pipe are connected to the high-pressure pipe and the output end of the air compressor, respectively. The outlet pipe is also provided with a one-way valve. The air compressor generates compressed air, which is then transported through the outlet pipe to the high-pressure pipe to purge the residual fire extinguishing agent in the high-pressure pipe.

[0011] Furthermore, the partitioned pipes are equipped with partitioned valves. The cabin-level spray unit includes a cabin-level pipe and a cabin-level sprinkler. The cabin-level pipe is connected to the partitioned pipes, and multiple cabin-level sprinklers are spaced apart on the cabin-level pipes. The cabin-level pipes are also equipped with cabin-level solenoid valves. The partitioned valves open and close the partitioned pipes, while the cabin-level solenoid valves open and close the cabin-level pipes. Through the cooperation of the cabin-level pipes and the cabin-level sprinklers, perfluorohexanone fire extinguishing agent is continuously sprayed onto the battery cluster and the entire energy storage compartment.

[0012] Furthermore, the cluster-level spray unit includes multiple cluster-level pipes connected to the partition pipes. The cluster-level pipes are equipped with cluster-level solenoid valves, and multiple pack-level nozzles are spaced apart on the cluster-level pipes. The cluster-level solenoid valves open and close the cluster-level pipes, so that the cluster-level pipes and the pack-level nozzles work together to spray perfluorohexanone fire extinguishing agent on all battery packs within the battery cluster requiring fire extinguishing.

[0013] Furthermore, the energy storage compartment is equipped with a fire alarm controller, cabin-level composite fire detectors, and cluster-level composite fire detectors. These cabin-level composite fire detectors and cluster-level composite fire detectors are electrically connected to the fire alarm controller, which is in turn electrically connected to the control cabinet. When a battery cluster fire occurs within the energy storage compartment, the cluster-level composite fire detectors detect it and send a signal back to the fire alarm controller. If a battery cluster fire is not effectively contained and spreads to adjacent battery clusters, the cabin-level composite fire detectors detect it and send a signal back to the fire alarm controller.

[0014] Through the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model has a simple and reasonable structure and good use effect. It adopts a double fire extinguishing method to effectively extinguish the fire in the energy storage cabin. It adopts perfluorohexanone fire extinguishing agent to extinguish the fire, which has high fire extinguishing efficiency. When the perfluorohexanone fire extinguishing agent is sprayed, high-pressure fine water mist can be used to continuously extinguish the fire. The double protection method can effectively suppress the fire in the energy storage cabin, with good fire extinguishing effect and high safety.

[0016] The utility model detects whether a fire occurs in a battery cluster in an energy storage compartment through a cluster-level composite fire detector, and feeds back a signal to a fire alarm controller; a perfluorohexanone fire extinguishing agent is sprayed toward the battery cluster where the fire occurs through a perfluorohexanone fire extinguishing unit; the perfluorohexanone fire extinguishing agent in a liquid storage tank is transported to a high-pressure pipeline through a perfluorohexanone pipeline by a perfluorohexanone plunger pump, and then transported to a cluster-level pipeline through a partitioned pipeline, and the perfluorohexanone fire extinguishing agent is sprayed from a pack-level nozzle, thereby achieving the effect of extinguishing the fire of the battery cluster.

[0017] The utility model can continuously fill the high-pressure pipe with low-pressure perfluorohexanone fire extinguishing agent through the pressure-stabilizing pump and the pressure-stabilizing pipe, so that when a fire occurs in the battery cluster in the energy storage compartment, the perfluorohexanone fire extinguishing agent can be instantly supplied to the energy storage compartment where the fire occurs.

[0018] In the utility model, when the battery cluster fire is not effectively controlled and spreads to the adjacent battery cluster, the cabin-level composite fire detector detects the signal and feeds it back to the fire alarm controller. The perfluorohexanone fire extinguishing unit continuously sprays perfluorohexanone fire extinguishing agent to the battery cluster and the entire energy storage cabin through the cooperation of the cabin-level pipes and cabin-level sprinklers.

[0019] When the perfluorohexanone fire extinguishing agent of the utility model is sprayed out but the fire is not under control, the high-pressure fine water mist fire extinguishing unit can spray high-pressure fine water mist through the cabin-level spray unit and the cluster-level spray unit to cool down the battery cluster and extinguish the fire until the battery cluster fire is extinguished.

[0020] The cleaning unit of the utility model generates compressed air through an air compressor, so that the compressed air is transported to the high-pressure pipeline through the air outlet pipeline, thereby achieving the effect of purging the fire extinguishing agent remaining in the high-pressure pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a perfluorohexanone high-pressure water mist dual fire extinguishing system for an energy storage power station according to the utility model;

[0022] Figure 2 This is a schematic structural diagram of the perfluorohexanone fire extinguishing unit and the high-pressure water mist fire extinguishing unit of the utility model;

[0023] Figure 3 It is a structural diagram of the energy storage cabin of the utility model;

[0024] Figure 4It is a structural schematic diagram of the energy storage cabin and equipment cabin of the utility model.

[0025] The numbers in the attached figure are: 1 is the equipment cabin, 2 is the energy storage cabin, 3 is the high-pressure pipeline, 4 is the water tank, 5 is the water mist pressure regulating pipeline, 6 is the fine water mist pressure regulating valve, 7 is the fine water mist pipeline, 8 is the water filter, 9 is the fine water mist plunger pump, 10 is the liquid storage tank, 11 is the pressure regulating pipeline, 12 is the perfluorohexanone pressure regulating valve, 13 is the perfluorohexanone pipeline, 14 is the perfluorohexanone filter, 15 is the perfluorohexanone plunger pump, 16 is the pressure stabilizing pipeline, 17 is the pressure stabilizing Pump, 18 is the pressure transmitter, 19 is the one-way valve, 20 is the outlet pipe, 21 is the air compressor, 22 is the partition pipe, 23 is the partition valve, 24 is the cabin-level pipe, 25 is the cabin-level solenoid valve, 26 is the cabin-level sprinkler, 27 is the cluster-level pipe, 28 is the cluster-level solenoid valve, 29 is the pack-level sprinkler, 30 is the control cabinet, 31 is the fire alarm controller, 32 is the cabin-level composite fire detector, and 33 is the cluster-level composite fire detector. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0027] like Figures 1 to 4 As shown, a perfluorohexanone high-pressure fine water mist dual fire extinguishing system for an energy storage power station includes an equipment cabin 1, an energy storage cabin 2 and a high-pressure pipeline 3. A perfluorohexanone fire extinguishing unit and a high-pressure fine water mist fire extinguishing unit are arranged inside the equipment cabin 1. The perfluorohexanone fire extinguishing unit and the high-pressure fine water mist fire extinguishing unit are connected to the high-pressure pipeline 3. A control cabinet 30 and a cleaning unit connected to the high-pressure pipeline 3 are also arranged inside the equipment cabin 1. In this embodiment, the equipment cabin 1 and the energy storage cabin 2 both use containers of the same specifications. The equipment cabin 1 can be connected to a maximum of 50 energy storage cabins 2 through the high-pressure pipe 3. The equipment cabin 1 is located in the middle of the energy storage cabin 2, wherein the high-pressure pipe 3 is buried 30 cm to 50 cm below the ground. Insulation cotton is added to the outside of the high-pressure pipe 3. The perfluorohexanone fire extinguishing unit can spray perfluorohexanone fire extinguishing agent into the energy storage cabin 2. After the perfluorohexanone fire extinguishing agent of the perfluorohexanone fire extinguishing unit is sprayed, high-pressure fine water mist can be sprayed into the energy storage cabin 2 through the high-pressure fine water mist unit to ensure that the fire in the battery cluster is extinguished. The high-pressure pipe 3 can transport perfluorohexanone and high-pressure fine water mist fire extinguishing agent, but not at the same time. The perfluorohexanone fire extinguishing unit can continuously spray perfluorohexanone fire extinguishing agent for 3 minutes, and the high-pressure fine water mist fire extinguishing unit can continuously spray high-pressure fine water mist for 30 minutes.

[0028] The energy storage compartment 2 is equipped with a compartment-level spray unit and a cluster-level spray unit. Multiple partitioned pipes 22 are connected to the high-pressure pipe 3 and extend into the interior of the energy storage compartment 2. The compartment-level spray unit and the cluster-level spray unit are connected to the partitioned pipes 22. In this embodiment, the cluster-level spray unit can spray fire extinguishing agent to the battery cluster on fire. If the battery cluster fire is not effectively controlled and spreads to adjacent battery clusters, the compartment-level spray unit continuously sprays fire extinguishing agent to the entire energy storage compartment 2 and battery clusters.

[0029] The perfluorohexanone fire extinguishing unit includes a liquid storage tank 10, a pressure regulating pipe 11 and a perfluorohexanone pipe 13. The perfluorohexanone pipe 13 is connected to the liquid storage tank 10 and the high-pressure pipe 3, and the pressure regulating pipe 11 is connected to the liquid storage tank 10 and the perfluorohexanone pipe 13; a perfluorohexanone filter 14 and a perfluorohexanone plunger pump 15 are provided on the perfluorohexanone pipe 13, and a perfluorohexanone pressure regulating valve 12 is provided on the pressure regulating pipe 11. In this embodiment, perfluorohexanone fire extinguishing agent is stored in the liquid storage tank 10, and the perfluorohexanone filter 14 filters the perfluorohexanone fire extinguishing agent transported to the high-pressure pipeline 3 to filter out impurities in the perfluorohexanone fire extinguishing agent. The perfluorohexanone plunger pump 15 is used to pump the perfluorohexanone fire extinguishing agent into the high-pressure pipeline 3 through the perfluorohexanone pipeline 13, and the perfluorohexanone pressure regulating valve 12 maintains the pressure of the perfluorohexanone fire extinguishing unit to operate stably within a set range; when a fire occurs in a battery cluster in a certain energy storage cabin 2, the perfluorohexanone plunger pump 15 is opened to pump the perfluorohexanone fire extinguishing agent in the liquid storage tank 10 into the perfluorohexanone pipeline 13, and the perfluorohexanone filter 14 filters the perfluorohexanone fire extinguishing agent in the perfluorohexanone pipeline 13, and then the perfluorohexanone fire extinguishing agent enters the high-pressure pipeline 3 through the perfluorohexanone pipeline 13.

[0030] The perfluorohexanone pipeline 13 is connected to a pressure-stabilizing pipeline 16, which is connected to the high-pressure pipeline 3 and is equipped with a pressure-stabilizing pump 17. Both the perfluorohexanone pipeline 13 and the pressure-stabilizing pipeline 16 are equipped with a pressure transmitter 18 and a one-way valve 19. In this embodiment, the pressure-stabilizing pipeline 16 and the pressure-stabilizing pump 17 ensure that the high-pressure pipeline 3 is continuously filled with low-pressure perfluorohexanone fire extinguishing agent. This allows perfluorohexanone fire extinguishing agent to be instantly supplied to the energy storage compartment 2 where the fire occurs if a battery cluster within a certain energy storage compartment 2 catches fire. The pressure transmitter 18 is used to convert the perfluorohexanone fire extinguishing agent pressure into an electrical signal or other type of output signal to monitor, control, or record perfluorohexanone fire extinguishing agent pressure information.

[0031] The high-pressure fine water mist fire extinguishing unit includes a water tank 4, a water mist pressure regulating pipe 5 and a fine water mist pipe 7. The fine water mist pipe 7 is connected with the water tank 4 and the high-pressure pipe 3. The fine water mist pipe 7 is provided with a water filter 8 and a fine water mist plunger pump 9. The fine water mist pipe 7 is also provided with a pressure transmitter 18 and a one-way valve 19; the water mist pressure regulating pipe 5 is connected with the water tank 4 and the fine water mist pipe 7, and the water mist pressure regulating pipe 5 is provided with a fine water mist pressure regulating valve 6. In this embodiment, water fire extinguishing agent is stored in the water tank 2, and the water filter 8 filters the water fire extinguishing agent transported to the high-pressure pipe 3 to filter out impurities in the water. The fine water mist plunger pump 9 is used to pump the water fire extinguishing agent into the high-pressure pipe 3 through the fine water mist pipe 7, and the fine water mist pressure regulating valve 6 maintains the pressure of the high-pressure fine water mist fire extinguishing unit to operate stably within the set range; when the battery cluster fire in the energy storage cabin 2 is not controlled and the perfluorohexanone fire extinguishing agent of the perfluorohexanone fire extinguishing unit is sprayed, the fine water mist plunger pump 9 is turned on to pump the water fire extinguishing agent in the water tank 4 into the fine water mist pipe 7, the water filter 8 filters the water fire extinguishing agent in the fine water mist pipe 7, and then the water fire extinguishing agent enters the high-pressure pipe 3 through the fine water mist pipe 7; the pressure transmitter 18 is used to convert the water fire extinguishing agent pressure into an electrical signal or other types of output signals to monitor, control or record water fire extinguishing agent pressure information.

[0032] The cleaning unit includes an outlet pipe 20 and an air compressor 21. The outlet pipe 20 is connected to the high-pressure pipe 3 and the output end of the air compressor 21, respectively. A one-way valve 19 is also provided on the outlet pipe 20. In this embodiment, after all fires in the energy storage compartment 2 are extinguished, the air compressor 21 is turned on. Compressed air is generated by the air compressor 21 and delivered to the high-pressure pipe 3 via the outlet pipe 20, thereby purging any remaining fire extinguishing agent from the high-pressure pipe 3 and the pipes within the energy storage compartment 2.

[0033] The partition pipes 22 are provided with partition valves 23. The cabin-level spray unit includes a cabin-level pipe 24 and a cabin-level spray head 26. The cabin-level pipe 24 is connected to the partition pipe 22. A plurality of cabin-level spray heads 26 are spaced apart on the cabin-level pipe 24. The cabin-level pipe 24 is also provided with a cabin-level solenoid valve 25. In this embodiment, both the cabin-level solenoid valve 25 and the cabin-level spray head 26 are installed on the top of the energy storage compartment 2. Three to four cabin-level spray heads 26 are installed on the cabin-level pipe 24.

[0034] The cluster-level spray unit includes a plurality of cluster-level pipes 27 connected to the partition pipes 22. Cluster-level solenoid valves 28 are provided on the cluster-level pipes 27. Multiple pack-level nozzles 29 are spaced apart on the cluster-level pipes 27. In this embodiment, each battery cluster in the energy storage compartment 2 corresponds to a cluster-level pipe 27, wherein the pack-level nozzles 29 are installed in the battery packs, with one pack-level nozzle 29 installed in each battery pack.

[0035] The interior of the energy storage cabin 2 is also provided with a fire alarm controller 31, a cabin-level composite fire detector 32, and a cluster-level composite fire detector 33. The cabin-level composite fire detector 32 and the cluster-level composite fire detector 33 are electrically connected to the fire alarm controller 31, and the fire alarm controller 31 is electrically connected to the control cabinet 30. In this embodiment, the cabin-level composite fire detector 32 is installed on the top of the energy storage cabin 2, and two cabin-level composite fire detectors 32 are installed in each energy storage cabin 2. The cluster-level composite fire detector 33 is installed on the top of the battery cluster, and one cluster-level composite fire detector 33 is installed in each battery cluster; wherein the perfluorohexanone plunger pump 15, the pressure regulating pump 17, the pressure transmitter 18, the air compressor stage 21, the cabin-level solenoid valve 25, the cluster-level solenoid valve 28, and the fine water mist plunger pump 9 are all electrically connected to the control cabinet 30.

[0036] This utility model utilizes a dual fire extinguishing medium, perfluorohexanone and water mist, pre-installed in a container and pumped by a high-pressure pump through pipelines to each energy storage compartment 2. Independently designed terminal devices achieve a fully automated system. In the event of a fire, the perfluorohexanone fire extinguishing agent first cools and extinguishes the fire. If complete extinguishment is not achieved, the high-pressure water mist automatically switches to extinguishing the fire. The dual perfluorohexanone and water mist fire extinguishing system completely extinguishes the burning energy storage compartment 2, without affecting adjacent energy storage compartments 2, achieving the effect of targeted fire extinguishing and minimizing economic losses.

[0037] Level 1 alarm: ① When the cluster-level composite fire detector 33 or the cabin-level composite fire detector 32 reaches the level 1 alarm value, the control cabinet 30 activates the sound and light alarm, smoke exhaust fan, and electric shutters in the energy storage cabin 2 to remind staff to pay attention to the on-site situation in the protected area and transmits the alarm signal at the same time.

[0038] Level 2 Alarm: ① The cluster-level composite fire detector 33 transmits a Level 2 thermal runaway alarm signal. The control cabinet 30, in conjunction with the BMS, disconnects the power supply to the energy storage compartment 2, shuts down the air conditioning, smoke exhaust fan, and electric blinds, activates the audible and visual alarm, and opens the cluster-level solenoid valve 28 of the battery cluster to which the cluster-level composite fire detector 33 belongs, based on the alarm area. This performs a cyclic point spraying operation (spraying perfluorohexanone fire extinguishing agent) on all battery packs in the thermal runaway battery cluster. Simultaneously, the venting indicator light turns on, and relevant personnel are promptly notified. ② If the cabin-level composite fire detector 32 transmits a Level 2 thermal runaway alarm signal, the control cabinet 30, in conjunction with the BMS, disconnects the power supply to the energy storage compartment 2, shuts down the air conditioning, smoke exhaust fan, and electric blinds, activates the audible and visual alarm, opens the cabin-level solenoid valve 25, activates the perfluorohexanone fire extinguishing unit, and performs a cabin-wide flooding spray. Simultaneously, the venting indicator light turns on, and relevant personnel are promptly notified.

[0039] Level 3 alarm: If the fire is not under control after the perfluorohexanone fire extinguishing agent is sprayed, a level 3 alarm signal will be issued, and the high-pressure fine water mist fire extinguishing unit will be automatically turned on through the control cabinet 30 to continuously cool down and extinguish the fire, and relevant staff will be notified in time.

[0040] The working principle of the present invention is as follows: when a battery cluster in a certain energy storage compartment 2 catches fire, the cluster-level composite fire detector 33 corresponding to the burning battery cluster detects it and feeds back a signal to the fire alarm controller 31, and the fire alarm controller 31 feeds back a signal to the control cabinet 30, and the control cabinet 30 controls the perfluorohexanone plunger pump 15, the pressure transmitter 18 on the perfluorohexanone pipeline 13, and the cluster-level solenoid valve 28 corresponding to the burning battery cluster to open, and the perfluorohexanone plunger pump 15 extinguishes the perfluorohexanone in the liquid storage tank 10. The perfluorohexanone fire extinguishing agent is pumped into the perfluorohexanone pipe 13, and the perfluorohexanone filter 14 filters the perfluorohexanone fire extinguishing agent in the perfluorohexanone pipe 13. Then the perfluorohexanone fire extinguishing agent enters the high-pressure pipe 3 through the perfluorohexanone pipe 13, and then the perfluorohexanone fire extinguishing agent enters the partition pipe 22 of the energy storage cabin 2 corresponding to the burning battery cluster, and then enters the cluster-level pipe 27 corresponding to the burning battery cluster, and the pack-level nozzle 29 sprays the perfluorohexanone fire extinguishing agent out to extinguish the burning battery cluster.

[0041] When the battery cluster fire is not effectively controlled and spreads to the adjacent battery cluster, the cabin-level composite fire detector 32 detects the signal and feeds it back to the fire alarm controller 31. The fire alarm controller 31 feeds back the signal to the control cabinet 30. The control cabinet 30 controls the cabin-level solenoid valve 25 to open, and the perfluorohexanone fire extinguishing agent enters the cabin-level pipe 24 and the cluster-level pipe 27 corresponding to the adjacent battery cluster on fire, and the perfluorohexanone fire extinguishing agent is sprayed out through the cabin-level nozzle 26 and the pack-level nozzle 29 on the corresponding cluster-level pipe 27.

[0042] When the perfluorohexanone fire extinguishing agent of the perfluorohexanone fire extinguishing unit has been sprayed but the fire is not under control, the control cabinet 30 controls the fine water mist plunger pump 9 and the pressure transmitter 18 on the fine water mist pipe 7 to open, the fine water mist plunger pump 9 is turned on, and the water fire extinguishing agent in the water tank 4 is pumped into the fine water mist pipe 7. The water filter 8 filters the water fire extinguishing agent in the fine water mist pipe 7, and then the water fire extinguishing agent enters the high-pressure pipe 3 through the fine water mist pipe 7, and then the water fire extinguishing agent enters the partition pipe 22 of the energy storage cabin 2 corresponding to the burning battery cluster, and then enters the cabin-level pipe 24 and the cluster-level pipe 27, and the cabin-level nozzle 26 and the pack nozzle spray high-pressure fine water mist to continuously cool down and extinguish the fire.

[0043] After all fires in the energy storage cabin 2 are extinguished, the control cabinet controls the air compressor 21 to turn on. The air compressor 21 generates compressed air and transports it to the high-pressure pipeline 3 through the outlet pipe 20, blowing away the remaining fire extinguishing agent in the high-pressure pipeline 3 and the cabin-level pipeline 24 and cluster-level pipeline 27 in the energy storage cabin 2.

[0044] Perfluorohexanone fire extinguishing agent has excellent insulation properties, with a dielectric strength of up to 110KV. It leaves no residue after extinguishing a fire and is non-corrosive to circuits. It is the best fire extinguishing medium for thermal runaway of lithium batteries and can be used as a primary fire extinguishing measure. The diameter of high-pressure fine water mist droplets is small, ranging from 100 to 400μm. The discontinuous droplets sprayed out can remain suspended in the air for a long time, and have excellent electrical insulation properties. They can effectively extinguish fires in live equipment. High-pressure fine water mist quickly cools and quickly eliminates oxygen. The cooling rate is more than 100 times faster than that of general sprinkler systems, effectively preventing the re-ignition of fires and can be used as the ultimate fire extinguishing measure. The perfluorohexanone high-pressure fine water mist dual fire extinguishing system of energy storage power stations is an innovation in the field of fire protection and has good social and economic benefits.

[0045] The embodiments described above are only preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, any equivalent changes or modifications made according to the technical solutions described in the patent scope of the utility model should be included in the scope of the patent application of the utility model.

Claims

1. A perfluorohexanone high-pressure water mist dual fire extinguishing system for energy storage power stations, characterized in that: The invention comprises an equipment cabin (1), an energy storage cabin (2) and a high-pressure pipeline (3); a perfluorohexanone fire extinguishing unit and a high-pressure fine water mist fire extinguishing unit are arranged inside the equipment cabin (1); the perfluorohexanone fire extinguishing unit and the high-pressure fine water mist fire extinguishing unit are connected to the high-pressure pipeline (3); and a control cabinet (30) and a cleaning unit connected to the high-pressure pipeline (3) are also arranged inside the equipment cabin (1); The energy storage cabin (2) is provided with a cabin-level spray unit and a cluster-level spray unit. The high-pressure pipeline (3) is connected to a plurality of partition pipelines (22). The partition pipelines (22) extend into the interior of the energy storage cabin (2). The cabin-level spray unit and the cluster-level spray unit are connected to the partition pipelines (22).

2. The perfluorohexanone high-pressure water mist dual fire extinguishing system for energy storage power stations according to claim 1, characterized in that: The perfluorohexanone fire extinguishing unit comprises a liquid storage tank (10), a pressure regulating pipeline (11) and a perfluorohexanone pipeline (13); the perfluorohexanone pipeline (13) is connected to the liquid storage tank (10) and the high-pressure pipeline (3); the pressure regulating pipeline (11) is connected to the liquid storage tank (10) and the perfluorohexanone pipeline (13); a perfluorohexanone filter (14) and a perfluorohexanone plunger pump (15) are provided on the perfluorohexanone pipeline (13); and a perfluorohexanone pressure regulating valve (12) is provided on the pressure regulating pipeline (11).

3. The energy storage power station perfluorohexanone high-pressure water mist dual fire extinguishing system according to claim 2, characterized in that: The perfluorohexanone pipeline (13) is connected to a pressure-stabilizing pipeline (16), the pressure-stabilizing pipeline (16) is connected to the high-pressure pipeline (3), and a pressure-stabilizing pump (17) is provided on the pressure-stabilizing pipeline (16); and a pressure transmitter (18) and a one-way valve (19) are provided on both the perfluorohexanone pipeline (13) and the pressure-stabilizing pipeline (16).

4. The perfluorohexanone high-pressure water mist dual fire extinguishing system for energy storage power stations according to claim 1, characterized in that: The high-pressure fine water mist fire extinguishing unit comprises a water tank (4), a water mist pressure regulating pipe (5) and a fine water mist pipe (7); the fine water mist pipe (7) is connected to the water tank (4) and the high-pressure pipe (3); a water filter (8) and a fine water mist plunger pump (9) are provided on the fine water mist pipe (7); a pressure transmitter (18) and a one-way valve (19) are also provided on the fine water mist pipe (7); the water mist pressure regulating pipe (5) is connected to the water tank (4) and the fine water mist pipe (7); a fine water mist pressure regulating valve (6) is provided on the water mist pressure regulating pipe (5).

5. The perfluorohexanone high-pressure water mist dual fire extinguishing system for energy storage power stations according to claim 1, characterized in that: The cleaning unit comprises an air outlet pipe (20) and an air compressor (21). Both ends of the air outlet pipe (20) are respectively connected to the high-pressure pipe (3) and the output end of the air compressor (21). A one-way valve (19) is also provided on the air outlet pipe (20).

6. The perfluorohexanone high-pressure water mist dual fire extinguishing system for energy storage power stations according to claim 1, characterized in that: The partition pipe (22) is provided with a partition valve (23); the cabin-level spray unit includes a cabin-level pipe (24) and a cabin-level nozzle (26); the cabin-level pipe (24) is connected to the partition pipe (22); a plurality of cabin-level nozzles (26) are arranged at intervals on the cabin-level pipe (24); and a cabin-level solenoid valve (25) is also provided on the cabin-level pipe (24).

7. The perfluorohexanone high-pressure water mist dual fire extinguishing system for energy storage power stations according to claim 6, characterized in that: The cluster-level spray unit comprises a plurality of cluster-level pipes (27) connected to the partition pipes (22), a cluster-level solenoid valve (28) is provided on the cluster-level pipes (27), and a plurality of pack-level nozzles (29) are spaced apart on the cluster-level pipes (27).

8. The perfluorohexanone high-pressure water mist dual fire extinguishing system for energy storage power stations according to claim 7, characterized in that: A fire alarm controller (31), a cabin-level composite fire detector (32), and a cluster-level composite fire detector (33) are also provided inside the energy storage cabin (2). The cabin-level composite fire detector (32) and the cluster-level composite fire detector (33) are electrically connected to the fire alarm controller (31), and the fire alarm controller (31) is electrically connected to the control cabinet (30).

Images