CN114432620A - Electrochemistry energy storage power station fire extinguishing system - Google Patents
Electrochemistry energy storage power station fire extinguishing system Download PDFInfo
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- CN114432620A CN114432620A CN202111629003.8A CN202111629003A CN114432620A CN 114432620 A CN114432620 A CN 114432620A CN 202111629003 A CN202111629003 A CN 202111629003A CN 114432620 A CN114432620 A CN 114432620A
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- extinguishing agent
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
Abstract
The invention aims to overcome the defects that the existing electrochemical energy storage power station has complex fire hazard and a single fire extinguishing system is difficult to meet the requirement, and provides an electrochemical energy storage power station fire extinguishing system which is characterized in that a clean gas fire extinguishing device and a liquid fire extinguishing agent device, by sharing a set of control system and fire-fighting pipeline and organically integrating the control system and the fire-fighting pipeline into a set of fire-fighting system, the collection of various detection information is realized by adopting a bus, through the automatic control to sharing pipe-line system predetermine the multiple conflagration suppression and the method of putting out to different conflagration emergence points and scale, realized multi-level accurate fire control, not only improved the reaction rate that the conflagration was put out a fire and put out a fire greatly, promoted the efficiency that the cooling was put out a fire, loss that can also the greatly reduced energy storage power station conflagration put out a fire and put out a fire the process and cause realizes fire extinguishing systems 'standardization, reduces fire extinguishing systems's engineering volume, practices thrift the cost, has very high practicality.
Description
Technical Field
The invention relates to the field of electrochemical energy storage, in particular to a fire-fighting system of an electrochemical energy storage power station.
Background
The energy storage industry in China is in a rapidly growing situation, the loading amount of electrochemical energy storage power stations is more and more, and because a lithium ion battery adopted by the mainstream electrochemical energy storage power station at present is a chemical component containing high-energy substances and is dangerous in nature, and a fire accident of the electrochemical energy storage power station occurs at the moment, a perfect special fire protection system must be configured. The lithium ion battery has high energy density, rapid fire occurrence and development and large hazard, the thermal runaway characteristic of the lithium ion battery is different from that of the traditional building or other types of fire, and the lithium ion battery is difficult to extinguish once on fire and is easy to generate reburning after extinguishing the fire. In the field of energy storage, lithium ion batteries are generally used in a large number of groups, and thermal runaway of a single battery is easily diffused to adjacent batteries if the thermal runaway is not controlled in time, so that a large-scale fire is finally caused. The more effectual scheme is that the initial stage that takes place thermal runaway at single lithium cell in time carries out the accurate cooling of pertinence and restraines, and traditional single fire control measure is used at the demand that the energy storage power station is difficult to satisfy accurate fire control usually, and the action of putting out a fire lags behind, and is not accurate enough, also can not accomplish to put out a fire many times and prevent the after combustion. Water is a very high-efficiency cooling fire extinguishing agent, a large amount of water can effectively inhibit the thermal runaway of the lithium ion battery continuously, but a large amount of water-based fire extinguishing agent is applied at the initial stage of the thermal runaway or in the local fire, so that the scrapping of batteries and electrical equipment in the whole system can be caused, and therefore, the common energy storage power station adopts a fire extinguishing scheme mainly comprising cleaning gas fire extinguishing agents such as heptafluoropropane and perfluorohexanone. The gas fire extinguishing agent can not effectively inhibit the overall fire in the energy storage power station in the later stage of the development of the fire, and the energy storage power station adopts a scheme of simultaneously configuring two systems of clean gas and water spraying so as to improve the safety of the system for dealing with the fire, but the scheme needs to simultaneously arrange two independent control and pipeline systems, thereby improving the complexity of the project and the cost of the system.
Disclosure of Invention
The invention aims to overcome the defects of the fire-fighting scheme of the existing electrochemical energy storage system, and provides an electrochemical energy storage power station fire-fighting cabinet and a fire-fighting system, wherein a gas fire-fighting system and a liquid fire-fighting system are organically integrated, a set of control system and a fire-fighting pipeline are shared, the fire-fighting cabinet is arranged in a battery compartment of the electrochemical energy storage power station, alarm information can be collected by utilizing a bus, fire judgment can be quickly and accurately made, multi-level and accurate cooling inhibition can be realized on thermal runaway occurring in a battery box of the energy storage power station through a set of unified control circuit, a feedback circuit and a pipeline system, a clean fire-extinguishing agent is applied to timely and accurately extinguish at the initial stage of local fire occurrence in the battery box, the temperature is continuously reduced and the fire is extinguished when the thermal runaway occurring in the battery box is continuously inhibited by the gas fire-extinguishing agent, the liquid fire-extinguishing agent is automatically connected to reduce the temperature and extinguish the fire when the thermal runaway occurring in the battery box is repeatedly and uncontrollable by the gas fire-extinguishing agent, when the thermal runaway expansion of the battery spreads outside the battery box, the liquid water mist system is started when a large-scale fire disaster happens to the whole energy storage power station cabin, and the interior of the whole energy storage power station cabin is continuously cooled and restrained, so that more serious disastrous accidents are prevented. The integrated fire-fighting cabinet integrates two fire-fighting systems into one fire-fighting cabinet, realizes the standardization of detection and control information through a bus, realizes multiple fire suppression and extinguishing modes by utilizing the sharing of a unified control system and pipelines, realizes multi-level accurate fire fighting, not only greatly improves the reaction speed of fire suppression, improves the efficiency of temperature reduction and fire extinguishing, but also can reduce the loss caused in the extinguishing process, and can reduce the engineering quantity of design and construction in the construction process of an energy storage power station because the integrated fire-fighting cabinet realizes the modularization and standardization of the system, thereby greatly saving the cost and having high practicability.
The technical scheme is as follows:
an electrochemical energy storage power station fire-fighting system comprises a fire extinguishing device array, a liquid fire extinguishing agent storage box, a centralized control module, a fire extinguishing agent transfer pump, a fire extinguishing agent pipeline in a cabinet, a liquid fire extinguishing agent supply pipeline, a display screen and a power module, wherein the gas fire extinguishing device array is composed of a plurality of fire extinguishing device storage tanks, each fire extinguishing device storage tank is communicated with the fire extinguishing agent pipeline in the cabinet through a fire extinguishing device driving valve at a tank opening of each fire extinguishing device storage tank, the liquid fire extinguishing agent storage boxes are connected with the liquid fire extinguishing agent supply pipeline through the fire extinguishing agent transfer pump, the liquid fire extinguishing agent supply pipeline is divided into two paths through a one-way valve, one path is communicated with the fire extinguishing agent pipeline in the cabinet through a fire extinguishing agent pipeline selection valve, the other path is connected with a cabin fire-fighting pipeline through a cabin pipeline selection valve, and the fire extinguishing agent pipeline in the cabinet is communicated with an external fire extinguishing agent pipeline through a fire extinguishing agent output selection valve; the centralized control module can be connected with a plurality of paths of electric drive wires and is electrically connected with the driving valve of each fire extinguishing device, the fire extinguishing agent pipeline selection valve, the cabin pipeline selection valve, the fire extinguishing agent output selection valve and the fire extinguishing agent delivery pump through the electric drive wires respectively; the centralized control module is also in communication connection with the display screen; the power supply module is electrically connected with the centralized control module for supplying power; the components are all arranged in the fire-fighting cabinet shell.
The liquid fire extinguishing agent storage tank is filled with water-based fire extinguishing agent, and the fire extinguishing agent storage tank is communicated with an external fire-fighting water supply pipeline through an automatic water replenishing valve.
The fire extinguishing agent filled in the storage tank of the fire extinguishing device comprises perfluorohexanone, heptafluoropropane, hexafluoropropane, mixed inert gas, carbon dioxide or nitrogen, and the storage tank is provided with an electronic pressure gauge which is connected with the centralized control module through a feedback signal line.
And the liquid fire extinguishing agent supply pipeline is provided with a pipeline electronic pressure gauge, and the centralized control module is connected with the pipeline electronic pressure gauge through a feedback signal line.
The centralized control module supports standard bus communication, the centralized control module passes through alarm bus and power cord and links to each other with battery box fire detection controlling means, battery box fire detection controlling means has integrateed combustible gas sensor, temperature sensor and smoke transducer, supporting installation battery box fire detection controlling means and the fire extinguishing agent release valve of every battery box in the electrochemistry energy storage power station cabin, battery box fire detection controlling means installs inside the battery box, possess the electric drive function, and be connected with fire extinguishing agent release valve electricity through fire extinguishing agent release valve drive line, fire extinguishing agent release valve installs on the battery box wall, the release port is inboard at the battery box, the other end intercommunication fire extinguishing agent pipeline.
The centralized control module supports standard bus communication, the centralized control module is connected with one, two or more fire detection devices through an alarm bus and a power line, the fire detection devices are installed inside the cabin of the energy storage power station, and the fire detection devices comprise smoke detectors, infrared detectors, combustible gas detectors and/or flame detectors.
The cabin fire-fighting pipeline outside the fire-fighting cabinet is a water spraying, water spraying or water mist fire-fighting system spraying pipeline arranged in the cabin of the chemical energy storage power station.
The centralized control module is connected with an external audible and visual alarm through a driving wire and is connected with an external manual fire-fighting button through a feedback signal wire.
The centralized control module is in communication with other systems through communication lines.
The power module is composed of a transformer and a standby storage battery, and the transformer is connected with an external power supply.
The automatic fire extinguishing method of the fire-fighting cabinet can be set through a display screen, and the typical automatic fire extinguishing method comprises the following steps:
1) no. m battery box fire detection controlling means detects that battery box is inside to appear hot unusual:
closing or confirming the closing of the fire extinguishing agent pipeline selection valve, sequentially opening a fire extinguishing agent release valve of the No. m battery box, a fire extinguishing agent output selection valve and a fire extinguishing device driving valve of a non-empty fire extinguishing device storage tank, injecting the fire extinguishing agent into the No. m battery box for cooling and fire extinguishing, reading data detected by the fire detection control device after a set time period, and judging the cooling and fire extinguishing effect;
2) no. m battery box fire detection control means detects that a thermal anomaly has occurred inside the battery box and has repeated the number of times set in step 1), and No. m battery box fire detection control means detects that the thermal anomaly inside the battery box has not been alleviated, or that there has been no non-empty fire suppression device storage tank in the array of gas fire suppression devices:
opening a fire extinguishing agent release valve, a fire extinguishing agent output selection valve and a fire extinguishing agent pipeline selection valve of the No. m battery box in sequence, closing or confirming the closing of the cabin pipeline selection valve, starting a fire extinguishing agent transfer pump to spray a water-based fire extinguishing agent into the No. m battery box for cooling and fire extinguishing;
3) the fire detection device detects a fire, a non-empty fire extinguishing device storage tank for metering the fire extinguishing agent required by the energy storage power station cabin is arranged in the gas fire extinguishing device array, and the internal temperature of the energy storage power station cabin does not exceed a set value:
closing or confirming the closing of a fire extinguishing agent output selection valve, opening a cabin pipeline selection valve, a fire extinguishing agent pipeline selection valve and a fire extinguishing device driving valve of a non-empty fire extinguishing device storage tank needing fire extinguishing agent metering, injecting the fire extinguishing agent into the cabin of the energy storage power station through a cabin fire fighting pipeline for fire extinguishing, continuously reading data detected by a fire detection device in a set time period, and judging the fire extinguishing effect;
4) the fire detection device detects a fire, the temperature inside the energy storage plant compartment exceeds a set value, or step 3) has been repeated a set number of times, and the fire detection device still detects the development of a fire, or a non-empty fire suppression device tank in the array of gas fire suppression devices has not had the required fire suppression agent metering:
closing or confirming the closing of the fire extinguishing agent pipeline selection valve, opening the cabin pipeline selection valve, and starting the fire extinguishing agent transfer pump to inject the water-based fire extinguishing agent into the cabin fire-fighting pipeline to extinguish the fire of the cabin of the energy storage power station;
5) no. m battery box fire detection controlling means detects the inside thermal anomaly that appears of battery box, and fire detection device detects the conflagration simultaneously, has the non-empty extinguishing device storage tank of the required fire extinguishing agent measurement in energy storage power station cabin in the gaseous extinguishing device array, and the inside temperature in energy storage power station cabin does not exceed the setting value:
opening a fire extinguishing agent release valve, a fire extinguishing agent output selection valve, a cabin pipeline selection valve, a fire extinguishing agent pipeline selection valve and a fire extinguishing device driving valve of a non-empty fire extinguishing device storage tank needing fire extinguishing agent metering in sequence, injecting the fire extinguishing agent into the mth battery box and a cabin fire fighting pipeline in sequence for fire extinguishing, reading data measured by a fire detection control device and a fire detection device in the mth battery box after a set time period, and judging the fire extinguishing effect;
6) no. m battery box fire detection controlling means detects that the battery box is inside to appear hot unusual, has not had the non-empty extinguishing device storage tank in the gaseous extinguishing device array, and fire detection device detects the conflagration simultaneously:
the fire extinguishing agent delivery valve, the fire extinguishing agent output selection valve, the cabin pipeline selection valve and the fire extinguishing agent pipeline selection valve of the No. m battery box are sequentially opened, the fire extinguishing agent delivery pump is started to inject the water-based fire extinguishing agent into the No. m battery box and the cabin fire-fighting pipeline, and meanwhile, the No. m battery box and the energy storage power station cabin are extinguished.
The invention has the advantages of
In the chemical energy storage power station project, if the expected fire prevention and control effect is achieved, the fire prevention and control needs to be completed by matching of multiple stages of different fire blocking and fire fighting measures, the invention organically integrates a gas fire extinguishing system and a liquid fire extinguishing system which use a clean fire extinguishing agent, shares a set of detection control system and a fire fighting pipeline, can aim at various different fire development stages and severity degrees, such as the initial stage of thermal runaway of individual batteries in a battery box, the thermal runaway diffusion in the battery box, the electrical fire in an energy storage power station cabin, the severe fire in the battery box and the energy storage power station cabin, and the like, through the dispatch of inside fire extinguishing agent pipeline control valve, use corresponding fire extinguishing agent and put out the accurate fire of mode, improve fire extinguishing efficiency, avoid starting extinguishing device or just adopting water base to put out a fire excessive fire control measures such as putting out a fire because of local thermal runaway and cause whole high value system to scrap. The invention adopts the mode of fire extinguishing device array to conveniently control the using amount of the fire extinguishing agent in single starting, avoids the fire extinguishing agent in the fire extinguishing system from being consumed at one time, can prevent and control the thermal runaway of different battery boxes one by a plurality of fire extinguishing agent storage tanks, and sprays the fire extinguishing agent into the battery box with the thermal runaway for a plurality of times to continuously cool and extinguish the fire, thereby strictly preventing the occurrence of the common battery reburning phenomenon. The invention also applies the water-based fire extinguishing agent in the fire extinguishing agent storage box driven by the fire extinguishing agent transfer pump as a strongest fire extinguishing means, and can be communicated with an external fire-fighting water supply pipeline through the automatic water replenishing valve to replenish fire extinguishing water at any time, thereby realizing continuous fire extinguishing with infinite water quantity and preventing the further spread of fire to the maximum extent. The invention integrates two fire fighting systems into one fire fighting cabinet, realizes the standardization of detection and control information through a bus, realizes various fire suppression and extinguishing modes by utilizing a unified control system and a shared pipeline, realizes the modularization and standardization of the energy storage fire fighting system, realizes the multi-level accurate fire fighting, greatly improves the reaction speed of fire extinguishing, improves the efficiency of temperature reduction and fire extinguishing, and can also reduce the extra loss caused in the extinguishing process. Because the modularization and the standardization of the system are realized by the integrated fire-fighting cabinet, the engineering quantity of design and construction can be reduced in the construction process of the energy storage power station, the cost is greatly saved, the project implementation time is saved, and the practicability is high.
Drawings
FIG. 1 is a schematic view of a fire-fighting cabinet according to an embodiment of the present invention
FIG. 2 is a schematic diagram of a system configuration according to an embodiment of the present invention
FIG. 3 is a schematic flow chart of a fire extinguishing method according to an embodiment of the present invention
Detailed Description
The invention is further illustrated by the following examples, without limiting the scope of the invention:
referring to fig. 1 and 2, in the embodiment of the present invention, the electrochemical energy storage power station fire-fighting cabinet includes a fire-extinguishing device array 1, a liquid fire-extinguishing agent storage tank 2, a centralized control module 3, a fire-extinguishing agent delivery pump 4, an in-cabinet fire-extinguishing agent pipeline 5, a liquid fire-extinguishing agent supply pipeline 6, a display screen 8 and a power module 9, the gas fire-extinguishing device array 1 is composed of 22 fire-extinguishing device storage tanks 10, a fire-extinguishing device driving valve 20 is installed at a tank opening of each fire-extinguishing device storage tank 10, and the fire-extinguishing device driving valve 20 is communicated with the in-cabinet fire-extinguishing agent pipeline 5. The liquid fire extinguishing agent storage box 2 is connected with a liquid fire extinguishing agent supply pipeline 6 through a fire extinguishing agent transfer pump 4, the liquid fire extinguishing agent supply pipeline 6 is divided into two paths through a one-way valve 24, one path is communicated with a fire extinguishing agent pipeline 5 in the cabinet through a fire extinguishing agent pipeline selection valve 21, the other path is connected with a cabin fire fighting pipeline 45 outside the fire fighting cabinet through a cabin pipeline selection valve 22, and the fire extinguishing agent pipeline 5 in the cabinet is communicated with a fire extinguishing agent pipeline 51 outside the fire fighting cabinet through a fire extinguishing agent output selection valve 23.
The centralized control module 3 is a control circuit which is integrated on a circuit board by a microprocessor chip, a communication chip, a relay and other auxiliary electronic components, and is provided with two paths of communication interfaces with CAN protocols, a plurality of paths of electric drive wires 31 are connected to the circuit board and electrically connected with a driving valve 20, a fire extinguishing agent pipeline selection valve 21, a cabin pipeline selection valve 22, a fire extinguishing agent output selection valve 23 and a fire extinguishing agent delivery pump 4 of each fire extinguishing device, the driving valve 20 of the fire extinguishing device is a film type electric valve, and the fire extinguishing agent pipeline selection valve 21, the cabin pipeline selection valve 22 and the fire extinguishing agent output selection valve 23 are all electromagnetic valves. The centralized control module 3 may also be connected to a multi-path feedback signal line 32 for receiving an external feedback signal.
The fire extinguishing device storage tank 10 is a fire extinguishing device filled with 2 kilograms of heptafluoropropane fire extinguishing agent, an electronic pressure gauge 12 is further installed at the upper opening of the storage tank, and the electronic pressure gauge 12 is connected with the centralized control module 3 through a feedback signal line 32.
The liquid fire extinguishing agent storage tank 2 is a stainless steel water tank filled with water-based fire extinguishing agent, an automatic water replenishing interface is reserved at the upper part of the fire extinguishing agent storage tank 2 and can be communicated with an external fire-fighting water supply pipeline 27, an automatic water replenishing valve 26 is installed in the automatic water replenishing interface, and when the liquid level in the tank is low, the automatic water replenishing valve 26 is opened to replenish fire-fighting water.
A display screen 8 is arranged at the upper position of the front side of the fire-fighting cabinet shell 41, the centralized control module 3 is in communication connection with the display screen 8 through an RS485 communication line, and the model of the display screen is SK-070 GE; the power module 9 is installed at the lower position of the front side of the fire-fighting cabinet shell 41 and consists of a transformer and a standby storage battery, the transformer is connected with an external power supply 40, the storage battery is an 80AH lithium ion battery and is connected with the centralized control module 3, and power can be supplied to a fire-fighting system when no external power supply exists.
The liquid fire extinguishing agent supply pipeline 6 is provided with a pipeline electronic pressure gauge 39, the centralized control module 3 is connected with the pipeline electronic pressure gauge 39 through a feedback signal line 32, and the pressure in the feedback pipeline of the electronic pressure gauge is used for automatically adjusting the output of the fire extinguishing agent delivery pump 4 and keeping the water pressure in the pipeline, so that the water mist spraying system can work better.
The above components are all installed in the fire-fighting cabinet shell 41, and the fire-fighting cabinet shell 41 is a vertical iron sheet cabinet.
In this embodiment, the energy storage power station is a container type electrochemical energy storage power station, the energy storage power station chamber 46 is a standard 40-foot container chamber, the lithium ion batteries are installed in the battery boxes 42, the battery boxes 42 are arranged in the energy storage container in clusters, each battery box 42 is provided with a battery box fire detection control device 36 and a fire extinguishing agent release valve 25 in a matching manner, the battery box fire detection control device 36 can be realized by referring to a fire early warning control device in the scheme of the applicant's prior application 2017101215521, the battery box fire detection control device 36 is installed in the battery box 42, has an electric drive function, and is electrically connected with the fire extinguishing agent release valve 25 through a fire extinguishing agent release valve drive wire 35, the fire extinguishing agent release valve 25 is an electric valve and is installed on the wall of the battery box 42, a release port is arranged on the inner side of the battery box 42, and the other end is communicated with a fire extinguishing agent pipeline 51; the battery box fire detection control device 36 integrates a combustible gas sensor, a temperature sensor and a smoke sensor, and is connected with the centralized control module 3 through an alarm bus 33 and a power line 34, the alarm bus is a standard CAN bus, and the centralized control module 3 supplies power to the battery box fire detection control device 36 through the power line.
The centralized control module 3 is also connected via an alarm bus 33 and a power line 34 to a fire detection device 37 arranged inside the energy storage power station compartment 46, in this case the fire detection device 37 comprises two smoke detectors, two infrared detectors and two combustible gas detectors.
A cabin fire pipeline 45 is arranged at the upper part of a cabin 46 of the chemical energy storage power station, and the cabin fire pipeline 45 is a set of water mist fire extinguishing system spraying pipeline.
An audible and visual alarm 43 and a manual fire-fighting button 44 are also installed on the wall of the chemical energy storage power station cabin 46, the centralized control module 3 drives the external audible and visual alarm 43 through a driving wire 31, and receives a switching signal of the manual fire-fighting button 44 through a feedback signal wire 32.
The centralized control module 3 can also communicate with other systems through the communication line 38 to transmit the fire alarm signal to the superior system in time.
The fire-fighting cabinet automatic fire-extinguishing method can be set through the display screen 8, and a group of typical automatic fire-extinguishing methods are shown below in combination with fig. 3, and all the battery boxes 42 are numbered for positioning and distinguishing:
1) the m-th battery box fire detection control device 36 detects that a thermal abnormality occurs inside the battery box:
the centralized control module 3 closes or confirms that the fire extinguishing agent pipeline selection valve 21 is closed through an electric drive wire 31, sequentially opens a fire extinguishing agent release valve 25 of the No. m battery box, a fire extinguishing agent output selection valve 23 and a fire extinguishing device drive valve 20 of a non-empty fire extinguishing device storage tank 10, injects the fire extinguishing agent into the No. m battery box for cooling and fire extinguishing, then reads data detected by a fire detection control device 36 after a set time period, and judges the cooling and fire extinguishing effects; the set time period is determined according to the time that the battery in the battery box is likely to have re-ignition or thermal runaway expansion, and the calculation of the time can be realized by referring to the scheme of the applicant's prior application 2017101215521, which is 2 minutes in the embodiment;
2) the m-th battery box fire detection control device 36 detects that a thermal abnormality occurs inside the battery box and has repeated the step 1) three times, and the m-th battery box fire detection control device detects that the thermal abnormality inside the battery box has not been relieved, which may refer to the judgment basis of the fire in the scheme of the applicant's prior application 2017101215521, or the gas fire extinguishing device array 1
No non-empty fire suppression device tank 10:
fire extinguishing agent release valve 25, fire extinguishing agent output selection valve 23 and fire extinguishing agent pipeline selection valve for opening No. m battery box in sequence
21, closing or confirming the closing of the cabin pipeline selector valve 22, starting the fire extinguishing agent delivery pump 4 to inject the water-based fire extinguishing agent into the mth
The battery box is cooled and put out a fire;
3) the fire detection device 37 detects a fire and there are 21 non-empty fire suppression device tanks 10 in the gas fire suppression device array 1, the amount is calculated based on the fire suppression agent concentration required for the actual interior space of 40 container sizes, and the temperature measured inside the energy storage power station compartment 46 does not exceed 130 degrees:
closing or confirming the closing of the fire extinguishing agent output selector valve 23, opening the cabin pipeline selector valve 22, the fire extinguishing agent pipeline selector valve
21. The fire extinguishing device driving valve 20 of 21 non-empty fire extinguishing device storage tanks 10 injects fire extinguishing agent into an energy storage power station cabin 46 through a cabin fire pipeline 45 to extinguish fire, then reads data detected by a fire detection device 37 after 3 minutes continuously, and judges the fire extinguishing effect, wherein the judgment method refers to method 1;
4) the fire detection device 37 detects a fire, the temperature inside the energy storage power station compartment 46 exceeds 130 degrees, or step 3) has been repeatedly performed once and the fire detection device still detects the development of the fire, or the gas fire extinguishing device array 1
There have been no 21 non-empty fire suppression device tanks 10:
closing or confirming the closing of the fire extinguishing agent pipe selector valve 21, opening the cabin pipe selector valve 22, and starting the fire extinguishing agent transfer pump 4
Continuously injecting a water-based fire extinguishing agent into the cabin fire-fighting pipeline 45 to extinguish the fire of the energy storage power station cabin 46;
5) no. m battery box fire detection control device 36 detects that a thermal abnormality occurs inside the battery box, and fire detection device 37 detects a fire at the same time, there are 22 non-empty fire extinguishing device storage tanks 10 in gas fire extinguishing device array 1, and the temperature inside energy storage power station cabin 46 does not exceed 130 degrees:
fire extinguishing agent release valve 25, fire extinguishing agent output selection valve 23 and cabin pipeline selection valve which are sequentially opened for No. m battery box
22. Fire extinguishing agent pipeline selector valves 21 and 22 drive the valve 20 only by the fire extinguishing device of the non-empty fire extinguishing device storage tank 10, fire extinguishing agent is injected into the No. m battery box and the cabin fire fighting pipeline 45 in sequence to extinguish fire, then data detected by a fire detection control device 36 and a fire detection device 37 in the No. m battery box are read after 2 minutes, the fire extinguishing effect is judged, and the judgment method refers to method 1;
6) the m-th battery box fire detection control device 36 detects that a thermal abnormality has occurred inside the battery box, there is no non-empty fire extinguisher storage tank 10 in the gas fire extinguisher array 1, and the fire detection device 37 detects a fire:
fire extinguishing agent release valve 25, fire extinguishing agent output selection valve 23 and cabin pipeline selection valve which are sequentially opened for No. m battery box
22. And (3) starting a fire extinguishing agent pipeline selector valve 21, starting a fire extinguishing agent transfer pump 4 to inject water-based fire extinguishing agent into the m-th battery box and cabin fire-fighting pipeline 45, and extinguishing fire of the m-th battery box and an energy storage power station cabin 46.
Fig. 3 is a schematic diagram of a programmed implementation of the method, wherein V20 represents the fire extinguishing device actuation valve 20, V21 represents the fire extinguishing agent line selector valve 21, V22 represents the cabin line selector valve 22, V23 represents the fire extinguishing agent output selector valve 23, V25 represents the fire extinguishing agent release valve 25, pump 4 represents the fire extinguishing agent delivery pump 4, and the waiting time p is 2 minutes, q is 3 minutes, and n is 21.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A fire-fighting system of an electrochemical energy storage power station is characterized in that the fire-fighting system comprises a fire-extinguishing device array, a liquid fire-extinguishing agent storage box, a centralized control module, a fire-extinguishing agent delivery pump, a fire-extinguishing agent pipeline in a cabinet, a liquid fire-extinguishing agent supply pipeline, a display screen and a power module, wherein the gas fire-extinguishing device array consists of a plurality of fire-extinguishing device storage tanks, and each fire-extinguishing device storage tank is communicated with the fire-extinguishing agent pipeline in the cabinet through a fire-extinguishing device driving valve at a tank opening of each fire-extinguishing device storage tank; the liquid fire extinguishing agent storage tank is connected with a liquid fire extinguishing agent supply pipeline through a fire extinguishing agent delivery pump, the liquid fire extinguishing agent supply pipeline is divided into two paths after passing through a one-way valve, one path is communicated with a fire extinguishing agent pipeline in the cabinet through a fire extinguishing agent pipeline selection valve, and the other path is connected with a cabin fire fighting pipeline outside the fire fighting cabinet through a cabin pipeline selection valve; the fire extinguishing agent pipeline in the cabinet is communicated with a fire extinguishing agent pipeline outside the fire-fighting cabinet through a fire extinguishing agent output selection valve;
the centralized control module is connected with a plurality of paths of electric drive wires and is electrically connected with the driving valve of each fire extinguishing device, the fire extinguishing agent pipeline selection valve, the cabin pipeline selection valve, the fire extinguishing agent output selection valve and the fire extinguishing agent delivery pump through the electric drive wires respectively; an electronic pressure gauge is installed on the fire extinguishing device storage tank and connected with the centralized control module through a feedback signal line; a pipeline electronic pressure gauge is installed on the liquid fire extinguishing agent supply pipeline, and the centralized control module is connected with the pipeline electronic pressure gauge through a feedback signal line; the centralized control module is also connected with a battery box fire detection control device and a fire detection device;
the centralized control module carries out preset program operation based on fire data transmitted by the battery box fire detection control device and the fire detection device and pressure signals transmitted by the electronic pressure gauge and the pipeline electronic pressure gauge to output driving control signals of fire extinguishing schemes of corresponding grades, and drives the fire extinguishing device to drive the valve, the fire extinguishing agent pipeline selection valve, the cabin pipeline selection valve, the fire extinguishing agent output selection valve and the liquid fire extinguishing agent transmission pump so as to realize multi-level accurate fire fighting;
the centralized control module is also in communication connection with the display screen; the power supply module is electrically connected with the centralized control module for supplying power; the components are all arranged in the fire-fighting cabinet shell.
2. A fire fighting system as defined in claim 1, wherein the liquid fire extinguishing agent storage tank contains a water-based fire extinguishing agent, and the fire extinguishing agent storage tank is connected to an external fire service water supply line through an automatic water replenishment valve.
3. A fire fighting system as defined in claim 1, wherein the fire suppression unit tank contains a fire suppression agent comprising perfluorohexanone, heptafluoropropane, hexafluoropropane, mixed inert gas, carbon dioxide or nitrogen.
4. A fire fighting system as defined in claim 1, wherein the centralized control module supports standard bus communication, the centralized control module is connected to the battery box fire detection control device via the alarm bus and the power line, the battery box fire detection control device is integrated with the combustible gas sensor, the temperature sensor and the smoke sensor, each battery box in the cabin of the electrochemical energy storage power station is provided with the battery box fire detection control device and the fire extinguishing agent releasing valve, the battery box fire detection control device is installed in the battery box and has an electrically driving function, and is electrically connected to the fire extinguishing agent releasing valve via the driving wire of the fire extinguishing agent releasing valve, the fire extinguishing agent releasing valve is installed on the wall of the battery box, the releasing port is inside the battery box, and the other end is connected to the fire extinguishing agent pipeline.
5. A fire fighting system as defined in claim 1, characterized in that the central control module supports a standardized bus communication, the central control module being connected via an alarm bus and a power supply line to one, two or more fire detection devices installed inside the cabin of the energy storage power station, the fire detection devices comprising smoke detectors, infrared detectors, combustible gas detectors and/or flame detectors.
6. A fire fighting system as defined in claim 1, wherein the cabin fire fighting pipe outside the fire fighting cabinet is a water spray, water mist or water mist fire fighting system blow-out pipe disposed inside the cabin of the chemical energy storage power station.
7. A fire fighting system as defined in claim 1, wherein the central control module is connected to the external audible and visual alarm through a drive line, to the external manual fire control button through a feedback signal line, and to the other systems through a communication line.
8. A fire fighting system as defined in claim 1, wherein the power module is comprised of a transformer and a backup battery, the transformer being connected to an external power source.
9. Fire fighting system according to claim 1, characterized in that it is provided with a self-extinguishing method by means of a display screen.
10. A fire fighting system as defined in claim 9, characterized in that the automatic fire extinguishing method is:
1) no. m battery box fire detection controlling means detects that battery box is inside to appear hot unusual:
closing or confirming the closing of the fire extinguishing agent pipeline selection valve, sequentially opening a fire extinguishing agent release valve of the No. m battery box, a fire extinguishing agent output selection valve and a fire extinguishing device driving valve of a non-empty fire extinguishing device storage tank, injecting the fire extinguishing agent into the No. m battery box for cooling and fire extinguishing, reading data detected by the fire detection control device after a set time period, and judging the cooling and fire extinguishing effect;
2) no. m battery box fire detection control means detects that a thermal anomaly has occurred inside the battery box and has repeated the number of times set in step 1), and No. m battery box fire detection control means detects that the thermal anomaly inside the battery box has not been alleviated, or that there has been no non-empty fire suppression device storage tank in the array of gas fire suppression devices:
opening a fire extinguishing agent release valve, a fire extinguishing agent output selection valve and a fire extinguishing agent pipeline selection valve of the No. m battery box in sequence, closing or confirming the closing of the cabin pipeline selection valve, starting a fire extinguishing agent transfer pump to spray a water-based fire extinguishing agent into the No. m battery box for cooling and fire extinguishing;
3) the fire detection device detects a fire, a non-empty fire extinguishing device storage tank for metering the fire extinguishing agent required by the energy storage power station cabin is arranged in the gas fire extinguishing device array, and the internal temperature of the energy storage power station cabin does not exceed a set value:
closing or confirming that a fire extinguishing agent output selection valve is closed, opening a cabin pipeline selection valve, a fire extinguishing agent pipeline selection valve and a fire extinguishing device driving valve of a non-empty fire extinguishing device storage tank needing fire extinguishing agent metering, injecting the fire extinguishing agent into the cabin of the energy storage power station through a cabin fire fighting pipeline for fire extinguishing, continuously reading data detected by a fire detection device in a set time period, and judging the fire extinguishing effect;
4) the fire detection device detects a fire, the temperature inside the energy storage plant compartment exceeds a set value, or step 3) has been repeated a set number of times, and the fire detection device still detects the development of a fire, or a non-empty fire suppression device tank in the array of gas fire suppression devices has not had the required fire suppression agent metering:
closing or confirming the closing of the fire extinguishing agent pipeline selection valve, opening the cabin pipeline selection valve, and starting the fire extinguishing agent transfer pump to inject the water-based fire extinguishing agent into the cabin fire-fighting pipeline to extinguish the fire of the cabin of the energy storage power station;
5) no. m battery box fire detection controlling means detects the inside thermal anomaly that appears of battery box, and fire detection device detects the conflagration simultaneously, has the non-empty extinguishing device storage tank of the required fire extinguishing agent measurement in energy storage power station cabin in the gaseous extinguishing device array, and the inside temperature in energy storage power station cabin does not exceed the setting value:
opening a fire extinguishing agent release valve, a fire extinguishing agent output selection valve, a cabin pipeline selection valve, a fire extinguishing agent pipeline selection valve and a fire extinguishing device driving valve of a non-empty fire extinguishing device storage tank needing fire extinguishing agent metering in sequence, injecting the fire extinguishing agent into the No. m battery box and a cabin fire extinguishing pipeline in sequence for fire extinguishing, reading data measured by a fire detection control device and a fire detection device in the No. m battery box after a set time period, and judging the fire extinguishing effect;
6) no. m battery box fire detection controlling means detects that the battery box is inside to appear hot unusual, has not had the non-empty extinguishing device storage tank in the gaseous extinguishing device array, and fire detection device detects the conflagration simultaneously:
the fire extinguishing agent delivery valve, the fire extinguishing agent output selection valve, the cabin pipeline selection valve and the fire extinguishing agent pipeline selection valve of the No. m battery box are sequentially opened, the fire extinguishing agent delivery pump is started to inject the water-based fire extinguishing agent into the No. m battery box and the cabin fire-fighting pipeline, and meanwhile, the No. m battery box and the energy storage power station cabin are extinguished.
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