CN219921893U - Battery module level fire extinguishing system with emergency starting function - Google Patents

Abstract

The utility model relates to fire-fighting equipment and discloses a battery module-level fire-fighting system with emergency starting, which comprises a fire-extinguishing agent bottle group, a primary main pipe, a pack-level main pipe and a pack connecting pipe; the primary main pipe is communicated with the fire extinguishing agent bottle group and the pack primary main pipe; a zone control electromagnetic valve is arranged on the pack-level main pipe; the pack connecting pipes are provided with pack internal fire detection pipes extending into the respective battery boxes; the emergency one-way control valve is connected with the first-stage main pipe at the inlet end and the emergency main pipe at the outlet end, and controls the pack-stage main pipe and the emergency main pipe to be on-off; two ends of the fire detection pipe pass through the battery box and are respectively connected with the fire extinguishing agent bottle group and the emergency one-way control valve. The emergency self-starting is realized, and the fire extinguishing agent bottle group and the emergency one-way control valve are simultaneously started in a linkage way through the fire detecting pipe near the battery box, so that the battery fire disaster in the battery box is protected in an emergency way.

Description

Battery module level fire extinguishing system with emergency starting function

Technical Field

The utility model relates to fire-fighting equipment, in particular to a battery module-level fire-fighting system with emergency starting.

Background

Along with the wider application of lithium ion battery energy storage in the fields of wind energy storage, solar energy storage, peak-shifting charge and discharge fields and the like, the following lithium battery fire safety accidents are also more and more serious, the explosion of Beijing energy storage power station directly explodes two firefighters, the bombing of the whole industry is caused, the brake is stepped on for the rapid development of the industry, and the power echelon battery is directly caused to be not allowed to be applied to energy storage. Because lithium batteries are energy-containing substances, when the lithium batteries are overheated, short-circuited, extruded and the like, a large amount of heat is generated to trigger the chain reaction of internal electrode materials and electrolyte, and in order to improve the land utilization rate, the application scene of the lithium batteries is to tightly arrange electric cores, for example, a 3MWh energy storage device is arranged in a 20-scale energy storage container, hundreds of battery boxes are generally arranged, each battery box is provided with a plurality of electric cores, once thermal runaway occurs, the interlocking type fire spreading and explosion are extremely easy to cause, 2022 is 12 months, the national electric energy storage standardization technical commission also provides an electrochemical energy storage power station safety regulation, and in the standard, the fire fighting device needs to be designed for emergency starting devices, and meanwhile, the fire fighting device needs to be protected in a battery pack.

Lithium cell energy storage conflagration belongs to chemical reaction formula conflagration, and traditional total-submerged fire control scheme has fatal defect, and extinguishing device can't carry extinguishing agent to the battery box in and put out a fire promptly, and extinguishing agent can't carry out the cooling to the thermal runaway battery in the pack through shower nozzle atomizing and handle, consequently can't realize controlling its thermal runaway and spread.

The existing market scheme has the defects that: (1) the traditional smoke temperature sensing detection and the combustible gas detection are adopted aiming at the application scene of container energy storage in the current market, and the battery box which can not catch fire accurately is not adopted; (2) the traditional cabinet type fire extinguishing device is adopted for extinguishing fire, and the fire extinguishing agent cannot reach the battery box in time, cannot be effectively cooled, and has low utilization rate; (3) multiple starting cannot be realized, and no targeted measures are taken against the re-combustion problem of the lithium battery; (4) there is no emergency starting function, for example, a point-to-point repeated quick response lithium battery energy storage fire extinguishing system with application number 202010208726.X, the fire extinguishing device is installed in the container and in the same space with the protection area, when fire occurs, toxic substances exist in the protection area, and personnel cannot enter the fire extinguishing device.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a battery module-level fire-fighting system with emergency starting.

In order to solve the technical problems, the utility model is solved by the following technical scheme:

a battery module level fire extinguishing system with emergency starting comprises a fire extinguishing agent bottle group, a primary main pipe, a pack level main pipe and a pack connecting pipe;

the primary main pipe is used for communicating the fire extinguishing agent bottle group and the pack primary main pipe;

the pack-level main pipe is provided with a plurality of zone control electromagnetic valves in parallel, and the zone control electromagnetic valves are used for controlling the on-off of the pack-level main pipe and the pack connecting pipe;

the pack connecting pipes are provided with a plurality of pack internal fire detection pipes which extend into the battery boxes respectively;

comprises an emergency one-way control valve, an emergency main pipe and a fire detection pipe,

the inlet end of the emergency one-way control valve is connected with the first-stage main pipe, the outlet end of the emergency one-way control valve is connected with the emergency main pipe, and the emergency one-way control valve is used for controlling the on-off of the pack-stage main pipe and the emergency main pipe;

the emergency main pipe is connected with the pack connecting pipes, and a one-way valve is arranged between the three-way fitting between each pack connecting pipe and the emergency main pipe;

the two ends of the fire detection pipe sequentially penetrate through the battery boxes and are respectively connected with the fire extinguishing agent bottle group and the emergency one-way control valve, and the pressure difference between the fire detection pipe and the primary main pipe controls the emergency one-way control valve to start and stop.

Preferably, the emergency one-way control valve comprises an emergency one-way valve body, an emergency one-way valve core and an emergency one-way valve cover; the emergency check valve body comprises an emergency inlet and an emergency outlet, the emergency inlet is communicated with the primary main pipe, and the emergency outlet is communicated with the emergency main pipe; the emergency one-way valve core is arranged in the emergency one-way valve body and controls the on-off of the emergency inlet and the emergency outlet; the emergency check valve cover is covered on the emergency check valve body and forms an emergency differential pressure cavity, and the fire detecting pipe is arranged on the emergency check valve cover and is communicated with the emergency differential pressure cavity.

Preferably, the fire extinguishing agent bottle group comprises a bottle head valve, the bottle head valve comprises a bottle head valve body, a bottle head valve core and a bottle head valve cover, the bottle head valve body comprises a bottle head inlet and a bottle head outlet, the bottle head outlet is communicated with the primary main pipe, and the bottle head valve core is arranged in the bottle head valve core and controls the on-off of the bottle head inlet and the bottle head outlet; the bottle head valve cover is covered on the bottle head valve body and forms a bottle head differential pressure cavity with the bottle head valve core, the valve core is arranged on the bottle head valve cover and is used for controlling the on-off of the fire detection pipe and the bottle head differential pressure cavity, and the fire detection pipe is arranged on the bottle head valve cover and is communicated with the valve core.

Preferably, the bottle head valve comprises a bottle head electromagnetic driver, the bottle head electromagnetic driver is arranged on a bottle head valve cover and forms a bottle head pressure relief cavity with the bottle head electromagnetic driver, a first pressure relief channel and a second pressure relief channel which are communicated with the bottle head pressure relief cavity are arranged on the bottle head valve cover, the first pressure relief channel is used for communicating the bottle head differential pressure cavity and the bottle head pressure relief cavity, a third pressure relief channel communicated with a bottle head outlet is arranged on a bottle head valve body, the upper end of the third pressure relief channel is communicated with the second pressure relief channel, and the bottle head electromagnetic driver acts on a port of the second pressure relief channel and is used for controlling the on-off of the second pressure relief channel and the bottle head pressure relief cavity.

Preferably, the first-stage main pipe is provided with an electric control selection valve, the electric control selection valve is arranged below the pack-stage main pipe, the other end of the electric control selection valve is connected with a total submerged pipeline, and the total submerged pipeline is provided with a plurality of nozzles.

Preferably, the electric control selector valve comprises an electric control valve body, an electric control piston, an electric control valve core and an electromagnetic starter, wherein the electric control valve body comprises an electric control inlet and an electric control outlet, the electric control inlet is communicated with a primary main pipe through a pipeline, the electric control outlet is communicated with a total submerged pipeline, the electric control piston is arranged in the electric control valve body and controls the electric control inlet to be opened and closed with the electric control outlet, the electromagnetic starter is arranged on the electric control valve body and tightly presses the electric control valve core on the electric control valve body, an electric control lower differential pressure cavity is formed between the electric control valve core and the electric control piston, an electric control upper differential pressure cavity communicated with the electric control lower differential pressure cavity is arranged on the electric control valve core, a fourth pressure relief channel and a fifth pressure relief channel are arranged on the electric control valve core, a sixth pressure relief channel communicated with the fifth pressure relief channel is arranged on the electric control valve body, and the electromagnetic starter acts on the port of the fifth pressure relief channel and is used for controlling the opening and closing of the fifth pressure relief channel and the electric control upper differential pressure cavity.

Preferably, an upper piston groove is formed in the outer side wall of the upper end of the electric control piston, a piston upper sealing ring is arranged in the upper piston groove, a lower piston groove is formed in the outer side wall of the lower end of the electric control piston, and a piston lower sealing ring is arranged in the lower piston groove; the electric control valve body is internally provided with a lower limit step which is a conical surface, a gap is arranged between the electric control piston and the lower limit step, the upper end surface of the lower sealing ring of the piston is provided with an annular groove, and the electric control outlet is communicated with the annular groove through the gap.

Preferably, the fire detection pipe is provided with a mechanical emergency starting device, the mechanical emergency starting device comprises a parent body, a guide sleeve and a cutter bar, the parent body is provided with a guide hole and a mounting hole, the mounting hole transversely penetrates through the parent body and is communicated with the guide hole, the fire detection pipe is arranged on the mounting hole through the guide sleeve, the cutter bar extends into the guide hole and is arranged right above the fire detection pipe, and the cutter bar is provided with a safety plug pin for preventing the safety plug pin from falling; the outer circumference of the parent body is in threaded connection with two second nuts.

The utility model has the remarkable technical effects due to the adoption of the technical scheme:

(1) the fire disaster accurate early warning is carried out, whether the battery core is out of control or not is detected by adopting a built-in fire detection tube in a single battery box, and the detection accuracy is higher than that of an electronic sensor;

(2) the fire extinguishing agent is accurately conveyed, a control command is issued in early warning to start a fire extinguishing agent bottle group container valve and a zone control electromagnetic valve, the fire extinguishing agent is conveyed into a corresponding battery box, and automatic blasting release of the fire extinguishing agent is carried out in the battery box according to the actual condition of temperature;

(3) the fire extinguishing agent bottle group is sprayed for multiple times, the local early warning signal controls the fire extinguishing agent bottle group to start and stop at any time, the fire extinguishing agent bottle group can realize self-resetting, and the fire extinguishing agent is stored to be ready for protecting against other battery box fires of the re-burning fire disaster;

(4) the fire extinguishing agent bottle group realizes accurate protection through a temperature sensor, the fire extinguishing agent bottle group realizes total submerged protection through linkage of a smoke temperature sensing detector, and the fire extinguishing agent bottle group is mutually independent and respectively and pertinently protects the inside and the outside of the battery box;

(5) the emergency self-starting is realized, and the fire extinguishing agent bottle group and the emergency one-way control valve are simultaneously started in a linkage way through the fire detecting pipe near the battery box, so that the battery fire disaster in the battery box is protected in an emergency way.

Drawings

Fig. 1 is a schematic diagram of the system architecture of the present utility model.

Fig. 2 is a schematic structural view of the emergency one-way control valve of fig. 1.

Fig. 3 is a schematic view of the construction of the head valve of fig. 1.

Fig. 4 is a schematic view of the mechanical emergency starting device of fig. 1.

Fig. 5 is a schematic view of the structure of the precursor body in fig. 4.

Fig. 6 is a schematic diagram of the structure of the electrically controlled selector valve in fig. 1.

Fig. 7 is a partial enlarged view of a in fig. 6.

Fig. 8 is a schematic view of the electrically controlled piston of fig. 1.

Fig. 9 is a schematic view of the three-way tee of fig. 1.

The names of the parts indicated by the numerical reference numerals in the above drawings are as follows:

10-fire extinguishing agent bottle group, 101-bottle head valve, 102-pressure vessel, 1011-bottle head valve body, 1012-bottle head valve core, 1013-bottle head valve cover, 1014-valve core, 1015-bottle head electromagnetic driver, 1016-pressure leak detection device, 1017-switching, 1018-sealing gasket, 1019-first screw cap, 10110-bottle head valve core sealing ring, 10111-bottle head valve core reset spring, 10151-electromagnetic valve guide sleeve, 10152-electromagnetic coil, 10153-guide rod, 10 a-bottle head inlet, 10 b-bottle head outlet, 10 c-bottle head differential pressure cavity, 10 d-bottle head pressure cavity, 10 e-first pressure release channel, 10 f-second pressure release channel, 10 g-third pressure release channel

11-primary main pipe

12-pack level main pipe

13-pack connecting pipe

14-zone control electromagnetic valve

15-emergency one-way control valve, 151-emergency one-way valve body, 152-emergency one-way valve core, 153-emergency one-way valve cover, 154-first compression screw, 155-first hose connector, 15 a-emergency inlet, 15 b-emergency outlet, 15 c-emergency differential pressure

16-emergency main pipe

17-fire detecting tube

18-mechanical emergency starting device, 181-parent body, 182-guiding sleeve, 183-cutter bar, 184-safety bolt, 185-second nut, 1811-guiding hole, 1812-mounting hole

19-electrically controlled selector valve, 191-electrically controlled valve body, 192-electrically controlled piston, 193-electrically controlled valve core, 194-electromagnetic actuator, 195-piston upper seal ring, 196-piston lower seal ring, 197-electrically controlled piston return spring, 19 a-electrically controlled inlet, 19 b-electrically controlled outlet, 19 c-electrically controlled lower differential pressure chamber, 19 d-electrically controlled upper differential pressure chamber, 19 e-fourth pressure relief channel, 19 f-fifth pressure relief channel, 19 g-sixth pressure relief channel, 19 h-gap, 19 i-channel, 1911-lower limit step, 1961-annular groove, 1921-upper piston groove, 1922-lower piston groove, 1941-guide sleeve, 1942-push rod, 1943-plug, 1944-sealing block, 1945-actuator return spring, 1946-electromagnetic coil

20-total submerged pipeline

21-nozzle chamber

22-one-way valve

23-through three-way, 231-with third screw cap, 232-screw sealing ring, 23 a-through three-way first channel, 23 b-through three-way second channel

24-pack internal fire detection tube

Detailed Description

The utility model is described in further detail below with reference to figures 1-9 and examples.

Example 1

The battery module-level fire protection system with emergency starting function has the thought that aiming at fire characteristics of a lithium battery energy storage system, fire extinguishing agents are conveyed in a targeted mode to corresponding battery boxes for extinguishing fire and reducing temperature, meanwhile, the battery module-level fire protection system has the function of controlling fire of electric type to a container in a linkage total-submerged mode, a temperature sensing emergency self-starting function is set, and safety and reliability of the system are improved.

The battery module level fire-fighting system comprises a fire-extinguishing agent bottle group 10, a primary main pipe 11, a pack level main pipe 12 and a pack connecting pipe 13;

the primary main pipe 11 is used for communicating the fire extinguishing agent bottle group 10 and the pack-level main pipe 12, and when a fire disaster occurs, the fire extinguishing agent bottle group 10 conveys the fire extinguishing agent in the fire extinguishing agent bottle group to the pack-level main pipe 12 through the primary main pipe 11;

the pack-level main pipe 12 is provided with a plurality of zone control electromagnetic valves 14 in parallel, the number of the zone control electromagnetic valves 14 is 8 in the embodiment, the number of the zone control electromagnetic valves 14 is related to the layout and the number of the battery boxes, the zone control electromagnetic valves 14 are used for controlling the on-off of the pack-level main pipe 12 and the pack connecting pipe 13, when a certain battery box has a fire disaster, a control system sends a command to open the fire extinguishing agent bottle group 10, and meanwhile, the zone control electromagnetic valves 14 corresponding to the battery boxes are opened, so that fire extinguishing is implemented;

the pack connecting pipes 13 are provided with a plurality of pack internal fire detection pipes 24 which extend into the battery boxes respectively, and the pack internal fire detection pipes 24 are arranged in each battery box, so that fire disaster accurate early warning is improved, whether the electric core is out of control or not is detected by adopting the built-in fire detection pipes in the single battery box, and the electric core detection device is more reliable and higher in detection precision than an electronic sensor;

the battery module level fire protection system comprises an emergency one-way control valve 15, an emergency main pipe 16 and a fire detection pipe 17,

the inlet end of the emergency one-way control valve 15 is in threaded connection with the primary main pipe 11, the outlet end of the emergency one-way control valve 15 is in threaded connection with the emergency main pipe 16, and the emergency one-way control valve 15 is used for controlling the pack-level main pipe 12 and the emergency main pipe 16 to be switched on and off;

the emergency main pipe 16 is connected with the pack connecting pipes 13, a one-way valve 22 is arranged between the three-way fittings between each pack connecting pipe 13 and the emergency main pipe 16, and the one-way valve 22 prevents the fire extinguishing in the pack connecting pipe 13 from flowing back to the emergency main pipe 16;

the two ends of the fire detection pipe 17 sequentially penetrate through a plurality of battery boxes and are respectively connected with the fire extinguishing agent bottle group 10 and the emergency one-way control valve 15, and the pressure difference between the fire detection pipe 17 and the primary main pipe 11 controls the emergency one-way control valve 15 to start and stop.

When the fire extinguishing agent bottle group 10, the electric control selection valve 19, the zone control electromagnetic valve 14 and the emergency one-way control valve 15 are all in a default locking state in a quasi-working state, the fire detecting tube 17 is filled with pressure, when the fire control early warning control system and the lithium battery energy storage management system communicate and exchange data, when a start module (pack) level fire is found to be needed, the fire control host machine issues a start command to the fire extinguishing agent bottle group 10 and the zone control electromagnetic valve 14, at the moment, the electric control selection valve 19, the rest zone control electromagnetic valves and the emergency one-way control valve 15 are all in a default locking state, fire extinguishing agent enters the primary main tube 11 from the bottle outlet 10b and enters the pack level main tube 12, and is started according to one of the zone control electromagnetic valves 14, and smoothly enter the pack connecting pipe 13, a one-way valve 22 is arranged between three-way fittings between the pack connecting pipe 13 and the emergency main pipe 16, namely, fire extinguishing agent can flow into the pack connecting pipe 13 from the emergency main pipe 16, the fire extinguishing agent in the pack connecting pipe 13 can not reversely flow into the emergency main pipe 16, a plurality of pack connecting pipes 13 and three-way through plates 23 can be connected to a subsequent pipeline of a zone control electromagnetic valve 14, the pack connecting pipes 13 in the same zone are connected in series through the three-way through plates 23, the pack internal fire detection pipes 24 in each battery box are connected with the corresponding three-way through plates 23, and the three-way through plates 23 are used for fixing the pack connecting pipe 13 on the battery box on one hand and conveying the fire extinguishing agent into the pack internal fire detection pipes 24 on the other hand. When the zone control electromagnetic valve 14 is opened, the pack internal fire detection pipe 24 on each perforated tee 23 of the rear pipeline is filled with a medicament, and if a certain pack is out of control, the corresponding pack internal fire detection pipe 24 can automatically burst to release fire extinguishing agent after reaching a set temperature, so that independent fire extinguishing and cooling in the pack are realized. Meanwhile, the consumption of the fire extinguishing agent is determined according to the battery capacity in the pack, the program sets the single spraying duration time, and then the system automatically resets after the set time is reached, so that the fire extinguishing agent bottle group still stores the residual fire extinguishing agent in the fire extinguishing agent bottle group 10, and when the system detects fire re-combustion or other pack areas are in fire, the system can open the fire extinguishing agent bottle group 10 and the corresponding zone control electromagnetic valve 14 again for second-round spraying.

The three-way through plate 23 is provided with third nuts 231 at two ends, so that the pack connecting pipe 13) is convenient to install and fix, the tail end of the pack connecting pipe 13 is provided with an O-shaped ring, the mounting is convenient to install, the parent body of the three-way through plate 23 is provided with threads, and two hexagonal third nuts 231 are arranged, when the three-way through plate 23 needs to be installed on a pack panel, only the inner third nuts 231 and the outer third nuts 231 need to be screwed, meanwhile, in order to improve the sealing reliability between the three-way through plate 23 and the pack panel, the parent body of the three-way through plate 23 is provided with a threaded sealing ring 232, the pack inner fire detecting pipe is installed on the way in the middle of the three-way through plate 23, the pack inner fire detecting pipe is used for releasing fire extinguishing agent, the other end of the pack inner fire detecting pipe is arranged in a sealing plug mode, namely, the three-way through plate second channel 23b is a section of fire detecting pipe branch pipe which is relatively sealed in the pack, and when fire extinguishing agent enters into the first channel 23a of the three-way through plate, one part is shunted into the second channel 23b of the three-way through plate, and the other part enters into the next three-way through plate 23.

The emergency one-way control valve 15 comprises an emergency one-way valve body 151, an emergency one-way valve core 152 and an emergency one-way valve cover 153, wherein the emergency one-way valve cover 153 is covered on the emergency one-way valve body 151 in a threaded mode, the emergency one-way valve core 152 is installed in an inner cavity of the emergency one-way valve body 151, and the emergency one-way valve core 152 is in sealing connection with the emergency one-way valve body 151 through an O-shaped sealing ring. A gasket for end face sealing and an O-shaped sealing ring for radial sealing are respectively arranged between the emergency one-way valve body 151 and the emergency one-way valve cover 153, so that the sealing reliability is improved. One end of the emergency one-way valve core 152 is provided with a first compression screw 154 and is provided with an O-shaped sealing ring, and the O-shaped sealing ring is extruded by screwing the first compression screw 154, so that the O-shaped sealing ring and the emergency one-way valve body 151 are ensured to have enough sealing contact surfaces; the emergency check valve body 151 comprises an emergency inlet 15a and an emergency outlet 15b, wherein the emergency inlet 15a is communicated with the primary main pipe 11, and the emergency outlet 15b is communicated with the emergency main pipe 16; the emergency check valve core 152 is installed in the emergency check valve body 151 and controls the on-off of the emergency inlet 15a and the emergency outlet 15 b; the emergency check valve cover 153 covers the emergency check valve 151 and forms an emergency differential pressure cavity 15c, and the fire detecting tube 17 is installed on the emergency check valve cover 153 and is communicated with the emergency differential pressure cavity 15 c. The emergency check valve cap 153 top is equipped with first hose connection 155, first hose connection 155 is used for connecting the fire tube 17, when the pressure is filled in the fire tube 17, pressure can reach in the emergent differential pressure chamber 15c voluntarily, thereby compress tightly emergent check valve core 152, even if the fire extinguishing agent bottle group 10 starts this moment, pressure enters into in the emergent import 15a, the emergent check valve core 152 is the same about this moment pressure, and the contact surface in the emergent differential pressure chamber 15c is bigger, consequently emergent import 15a and emergent export 15b can not be opened to emergent check valve core 152, when the explosion of fire tube 17 is lost pressure, can lose pressure in the emergent differential pressure chamber 15c this moment, and emergent import 15a possess pressure because of the bottle group is opened simultaneously, directly can jack up emergent check valve core 152, thereby open emergent import 15a and emergent export 15b, fire extinguishing agent gets into in the emergent main pipe 16.

The fire extinguishing agent bottle group 10 comprises a bottle head valve 101 and a pressure container 102, wherein the bottle head valve 101 comprises a bottle head valve body 1011, a bottle head valve core 1012 and a bottle head valve cover 1013, the bottle head valve body 1011 comprises a bottle head inlet 10a and a bottle head outlet 10b, the bottle head outlet 10b is communicated with the primary main pipe 11, and the bottle head valve core 1012 is arranged in the bottle head valve core 1012 and controls the connection and disconnection of the bottle head inlet 10a and the bottle head outlet 10 b; the bottle head valve cover 1013 is covered on the bottle head valve body 1011 and forms a bottle head differential pressure cavity 10c with the bottle head valve core 1012, the bottle head valve cover 1013 is provided with a valve core 1014 and a second hose connector 10112, the second hose connector 10112 tightly presses and limits the valve core 1014 on the bottle head valve body 1011, a lifting rod on the valve core 1014 is sealed in a countersunk hole of the second hose connector 10112 with a sealing gasket, the valve core 1014 is used for controlling the on-off of the fire detection tube 17 and the bottle head differential pressure cavity 10c, and the fire detection tube 17 is arranged on the second hose connector 10112 of the bottle head valve cover 1013 and is communicated with the valve core 1014. The pressure leak detection device 1016 is arranged on the bottle head valve 101, the adapter 1017 is arranged between the pressure leak detection device 1016 and the bottle head valve body 1011, the sealing gasket 1018 is arranged at the tail end of the adapter 1017, the tightness of the sealing gasket 1018 is controlled by unscrewing and screwing of the first screw cap 1019, and when unscrewing, the pressure leak detection device 1016 can directly detect the pressure in the bottle group. The bottle valve core 1012 is connected with the second pressing screw 10110 through threads, and an O-shaped ring between the bottle valve core 1012 and the second pressing screw 10110 is extruded, so that inclined plane sealing is ensured to be generated between the bottle valve core 1012 and the bottle valve body 1011, and meanwhile, an O-shaped ring for increasing sealing reliability is also arranged between the bottle valve core 1012 and the second pressing screw 10110. The second compression screw 10110 is provided with a tiny hole for guiding the gas in the bottle head inlet 10a to the bottle head differential pressure cavity 10c of the bottle head valve core 1012, an O-shaped ring is also arranged between the bottle head valve core 1012 and the bottle head valve body 1011, a bottle head valve core reset spring 10111 is arranged between the bottle head valve core 1012 and the bottle head valve cover 1013, the bottle head valve core reset spring 10111 is used for controlling the valve core to automatically reset under the condition of balanced stress, the bottle head valve cover 1013 and the bottle head valve body 1011 are connected through threads, and the O-shaped rings with two numbers are also arranged between the two.

When the emergency starting is in the working state, the pressure in the fire detecting pipe 17 is lost, so that the gas in the bottle head differential pressure cavity 10c of the bottle head valve core 1012 is rapidly released from the channel where the valve core 1014 is located, and the bottle head valve core 1012 forms a pressure difference up and down, so that the bottle head valve 101 is rapidly opened. When the second hose connector 10112 is suspended, the valve core 1014 will automatically close, and the fire tube 17 can be serviced without causing actuation.

The bottle head valve 101 comprises a bottle head electromagnetic driver 1015, the bottle head electromagnetic driver 1015 comprises a solenoid valve guide sleeve 10151, a solenoid valve 10152 is arranged outside the solenoid valve guide sleeve 10151, a guide rod 10153 is arranged inside the solenoid valve 10152, two sealing rings are arranged between the solenoid valve guide sleeve 10151 and the bottle head valve cover 1013, and a sealing gasket is arranged at the tail end of the guide rod 10153. The bottle head electromagnetic driver 1015 is installed on the bottle head valve cover 1013 and forms a bottle head pressure release cavity 10d with the bottle head valve cover 1013, a first pressure release channel 10e and a second pressure release channel 10f which are communicated with the bottle head pressure release cavity 10d are arranged on the bottle head valve cover 1013, the first pressure release channel 10e is used for communicating the bottle head differential pressure cavity 10c and the bottle head pressure release cavity 10d, a third pressure release channel 10g which is communicated with the bottle head outlet 10b is arranged on the bottle head valve body 1011, the upper end of the third pressure release channel 10g is communicated with the second pressure release channel 10f, and the bottle head electromagnetic driver 1015 acts on a port of the second pressure release channel 10f and is used for controlling the on-off of the second pressure release channel 10f and the bottle head pressure release cavity 10 d.

The bottle head inlet 10a and the bottle head outlet 10b are used for releasing fire extinguishing agent, under normal conditions, the two channels are partitions, when the pack level is started or the container valve is completely submerged, a starting signal is received, the electromagnetic coil 10152 is electrified, a magnetic field is further generated, the guide rod 10153 is separated from the sealing surface of the bottle head valve cover 1013 under the action of the magnetic field, gas in the bottle head differential pressure cavity 10c of the bottle head valve core 1012 enters the third pressure release channel 10g through the first pressure release channel 10e and is released from the bottle head outlet 10b, at the moment, the bottle head valve core 1012 can form a sealing surface at the O-shaped ring position between the bottle head valve core 1012 and the second compression screw 10110 under the action of air pressure, and the bottle head inlet 10a and the bottle head outlet 10b are directly communicated, so that the fire extinguishing agent is released.

Example 2

Embodiment 2 has substantially the same features as embodiment 1, except that the primary main pipe 11 is provided with an electrically controlled selector valve 19, the electrically controlled selector valve 19 is disposed below the pack-stage main pipe 12, the other end of the electrically controlled selector valve 19 is connected with a total submerged pipeline 20, the total submerged pipeline 20 is provided with a plurality of nozzles 21, and the nozzles 21 are atomizing nozzles.

The electric control selector valve 19 comprises an electric control valve body 191, an electric control piston 192, an electric control valve core 193 and an electromagnetic starter 194, wherein the electric control valve body 191 comprises an electric control inlet 19a and an electric control outlet 19b, the electric control inlet 19a is communicated with the primary main pipe 11 through a pipeline, the electric control outlet 19b is communicated with the total submerged pipeline 20, the electric control piston 192 is arranged in the electric control valve body 191 and controls the electric control inlet 19a and the electric control outlet 19b to be on-off, the electromagnetic starter 194 is arranged on the electric control valve body 191 and compresses the electric control valve core 193 on the electric control valve body 191, an electric control lower differential pressure cavity 19c is formed between the electric control valve core 193 and the electric control piston 192, an electric control upper differential pressure cavity 19d communicated with the electric control lower differential pressure cavity 19c is arranged on the electric control valve core 193, a fourth pressure relief channel 19e and a fifth pressure relief channel 19f are arranged on the electric control valve core 193, the fourth pressure relief channel 19e is used for communicating the electric control upper differential pressure cavity 19d with the electric control lower differential pressure cavity 19c, a sixth pressure relief channel 19g communicated with the fifth pressure relief channel 19f is arranged on the electric control valve body 191, the electromagnetic starter 194 acts on the fifth pressure starter 19f and controls the fifth pressure channel 19f to be used for controlling the on the fifth pressure channel 19 d.

An upper piston groove 1921 is formed in the outer side wall of the upper end of the electric control piston 192, a piston upper sealing ring 195 is installed in the upper piston groove 1921, a lower piston groove 1922 is formed in the outer side wall of the lower end of the electric control piston 192, and a piston lower sealing ring 196 is installed in the lower piston groove 1922; a lower limit step 1911 is arranged in the electric control valve body 191, the lower limit step 1911 is a conical surface, a gap 19h is arranged between the electric control piston 192 and the lower limit step 1911, an annular groove 1961 is arranged on the upper end surface of the piston lower sealing ring 196, and an electric control outlet 19b is communicated with the annular groove 1961 through the gap 19 h.

The two ends of the electric control valve body 191 are provided with a control electric control inlet 19a and an electric control outlet 19b for connecting pipelines, a piston lower sealing ring 196 is arranged between the electric control valve body 191 and the electric control valve core 193, the other end of the electric control valve body 191 is provided with the piston lower sealing ring 195, when the air pressure is fully filled in the control electric control inlet 19a, the piston lower sealing ring 196 expands under the action of the air pressure in the control electric control inlet 19a, a sealing contact surface is increased between the piston lower sealing ring 196 and the electric control valve body 191, sealing reliability is improved, a channel 19i is arranged on the electric control valve core 193, when the air is fully filled in the control electric control inlet 19a, the air can fill the channel 19i into the electric control lower differential pressure cavity 19c, meanwhile, an electric control piston return spring 197 is arranged on the electric control piston 192, when the upper end face and the lower end face of the electric control piston 192 are balanced, the electric control piston 192 can close the control inlet 19a and the electric control outlet 19b under the action of the electric control piston return spring 197, the electric control valve core 193 is screwed down by means of threads between a guide sleeve 1941 of an electromagnetic actuator 194 and the electric control valve body 191, further the electric control valve core 191 is fixed with the electric control valve body 191, two O-shaped rings for sealing are arranged on the electric control valve core 193, when the electric control piston 19f is fully filled with air, when the electric control piston is fully filled with air, the electric control piston 19d is fully filled with air, the electric control piston is fully filled with the electric control piston 19b is fully, the electric control piston is fully filled with a sealing rod, the electric piston is fully, and the electric piston is fully sealed by a sealing rod, and the electric sealing rod is sealed by a sealing rod, and the sealing rod is, and a sealing rod is 4.

When the electric control selector valve 19 is in standby operation, the electric control inlet 19a is controlled to be filled with compressed gas, meanwhile, the compressed gas enters the electric control lower differential pressure cavity 19c through the channel 19i, and then the gas in the electric control lower differential pressure cavity 19c enters the electric control upper differential pressure cavity 19d through the fourth pressure release channel 19e, at the moment, the push rod 1942 generates a sealing surface with a certain area between the sealing block 1942 and the electric control valve core 193 under the action of the starter return spring 1945, and then the push rod 1942 is caused to have pressure difference to form stable and reliable sealing due to section accumulation difference under the action of the same air pressure; when the electromagnetic coil 1946 of the electromagnetic starter 194 receives a starting signal, the electromagnetic coil 1946 generates magnetic attraction force, at this moment, the sealing surface between the sealing block 1942 and the electric control valve core 193 can be separated under the action of the magnetic attraction force, at this moment, the gas in the electric control lower differential pressure cavity 19c passes through the fourth pressure release channel 19e and the electric control upper differential pressure cavity 19d, and then enters into the fifth pressure release channel 19f, and is released from the sixth pressure release channel 19g, and then the air pressure difference is generated up and down received by the electric control valve core 193, under the action of the air pressure difference, the electric control valve core 193 can open the channel, and at this moment, the electric control inlet 19a and the electric control outlet 19b are controlled to be directly linked; when the electromagnetic coil 1946 loses the electric control signal, the magnetic field will automatically disappear, at this time, the push rod 1942 under the action of the starter return spring 1945, the sealing block 1942 and the electric control valve core 193 reform a sealing surface, at this time, the electric control lower differential pressure cavity 19c keeps consistent with the external air pressure, the electric control valve core 193 moves downwards under the action of the electric control piston return spring 197, and then the electric control valve core 193 blocks the control electric control inlet 19a and the electric control outlet 19b again, so as to realize automatic closing and resetting.

The implementation principle is as follows: when the fire-fighting early warning control system and monitoring find that the whole prefabricated cabin needs to be started to extinguish fire in a full-submerged mode in a large range, a control command is issued to start the fire-extinguishing agent bottle group 10 and the electric control selection valve 19, the time-control electromagnetic valve 14 and the emergency one-way control valve 15 are in a default locking state, and the fire-extinguishing agent enters the primary main pipe 11 from the bottle head outlet 10b and enters the full-submerged pipeline 20 and is directly sprayed into the prefabricated cabin through the nozzle 21 to extinguish fire in a large range.

Example 3

Embodiment 3 has substantially the same features as embodiment 1 or 2, except that a mechanical emergency starting device 18 is mounted on the fire detection tube 17, the mechanical emergency starting device 18 comprises a parent body 181, a guide sleeve 182 and a cutter bar 183, a guide hole 1811 and a mounting hole 1812 are formed in the parent body 181, the mounting hole 1812 transversely penetrates through the parent body 181 and is communicated with the guide hole 1811, the fire detection tube 17 is mounted on the mounting hole 1812 through the guide sleeve 182, the cutter bar 183 extends into the guide hole 1811 and is arranged right above the fire detection tube 17, and a safety latch 184 for preventing the cutter bar 183 from falling is mounted on the cutter bar; the outer circumferential surface of the parent body 181 is screw-coupled with a number of two second nuts 185.

When the fire-fighting early warning control system cannot work normally due to various reasons and cannot send starting instructions to all valves, fire in a battery compartment can be increased along with the continuation of fire, when a certain area of the whole pipe section of the fire detection pipe 17 or an artificial mechanical emergency starting device 18 is formed, pressure in the fire detection pipe 17 can be released, so that the bottle head valve 101 and the emergency check valve control valve 15 on the bottle group lose an original pressure balance state, and then unlock is carried out, fire extinguishing agent enters the primary main pipe 11, meanwhile, the emergency check valve core 152 of the emergency check valve control valve 15 is jacked, at the moment, the fire extinguishing agent can smoothly enter the emergency main pipe 16, and enter all pack connecting pipes 13 and the perforated tee joint 23 through each check valve 22, namely, the pack inside fire detection pipe 24 in all packs in the whole compartment is filled with fire extinguishing agent, at the moment, explosion occurs in the pack through the sensitivity of the built-in fire detection pipe to temperature, the pressure in the certain area in the pack is the whole pack is the lowest, and all fire extinguishing agents can finish automatic and temperature reduction through the fire extinguishing agent released at the explosion position.

Claims (8)

1. A battery module level fire-fighting system with emergency starting comprises a fire-extinguishing agent bottle group (10), a primary main pipe (11), a pack level main pipe (12) and a pack connecting pipe (13);

the primary main pipe (11) is used for communicating the fire extinguishing agent bottle group (10) and the pack primary main pipe (12);

a plurality of zone control electromagnetic valves (14) are arranged on the pack-level main pipe (12) in parallel, and the zone control electromagnetic valves (14) are used for controlling the on-off of the pack-level main pipe (12) and the pack connecting pipe (13);

pack connecting pipes (13) are provided with a plurality of pack internal fire detection pipes (24) which extend into the battery boxes respectively;

it is characterized by comprising an emergency one-way control valve (15), an emergency main pipe (16) and a fire detecting pipe (17),

the inlet end of the emergency one-way control valve (15) is connected with the primary main pipe (11), the outlet end of the emergency one-way control valve is connected with the emergency main pipe (16), and the emergency one-way control valve (15) is used for controlling the on-off of the pack-stage main pipe (12) and the emergency main pipe (16);

the emergency main pipe (16) is connected with the pack connecting pipes (13), and a one-way valve (22) is arranged between the three-way fitting between each pack connecting pipe (13) and the emergency main pipe (16);

two ends of the fire detection pipe (17) sequentially penetrate through the battery boxes and are respectively connected with the fire extinguishing agent bottle group (10) and the emergency one-way control valve (15), and the pressure difference between the fire detection pipe (17) and the primary main pipe (11) controls the emergency one-way control valve (15) to start and stop.

2. The battery module level fire protection system with emergency starting of claim 1, wherein: the emergency one-way control valve (15) comprises an emergency one-way valve body (151), an emergency one-way valve core (152) and an emergency one-way valve cover (153); the emergency check valve body (151) comprises an emergency inlet (15 a) and an emergency outlet (15 b), the emergency inlet (15 a) is communicated with the primary main pipe (11), and the emergency outlet (15 b) is communicated with the emergency main pipe (16); the emergency one-way valve core (152) is arranged in the emergency one-way valve body (151) and controls the on-off of the emergency inlet (15 a) and the emergency outlet (15 b); the emergency one-way valve cover (153) is covered on the emergency one-way valve body (151) and forms an emergency differential pressure cavity (15 c), and the fire detection tube (17) is arranged on the emergency one-way valve cover (153) and is communicated with the emergency differential pressure cavity (15 c).

3. The battery module level fire protection system with emergency starting of claim 1, wherein: the fire extinguishing agent bottle group (10) comprises a bottle head valve (101), the bottle head valve (101) comprises a bottle head valve body (1011), a bottle head valve core (1012) and a bottle head valve cover (1013), the bottle head valve body (1011) comprises a bottle head inlet (10 a) and a bottle head outlet (10 b), the bottle head outlet (10 b) is communicated with the primary main pipe (11), and the bottle head valve core (1012) is arranged in the bottle head valve core (1012) and controls the on-off of the bottle head inlet (10 a) and the bottle head outlet (10 b); the bottle head valve cover (1013) is covered on the bottle head valve body (1011) and forms a bottle head differential pressure cavity (10 c) with the bottle head valve core (1012), the valve core (1014) is arranged on the bottle head valve cover (1013), the valve core (1014) is used for controlling the on-off of the fire detection pipe (17) and the bottle head differential pressure cavity (10 c), and the fire detection pipe (17) is arranged on the bottle head valve cover (1013) and is communicated with the valve core (1014).

4. A battery module level fire protection system with emergency initiation as claimed in claim 3, wherein: the bottle head valve (101) comprises a bottle head electromagnetic driver (1015), the bottle head electromagnetic driver (1015) is arranged on a bottle head valve cover (1013) and forms a bottle head pressure release cavity (10 d) with the bottle head electromagnetic driver, a first pressure release channel (10 e) and a second pressure release channel (10 f) which are communicated with the bottle head pressure release cavity (10 d) are arranged on the bottle head valve cover (1013), the first pressure release channel (10 e) is used for communicating the bottle head differential pressure cavity (10 c) and the bottle head pressure release cavity (10 d), a third pressure release channel (10 g) communicated with a bottle head outlet (10 b) is arranged on a bottle head valve body (1011), the upper end of the third pressure release channel (10 g) is communicated with the second pressure release channel (10 f), and the bottle head electromagnetic driver (1015) acts on a port of the second pressure release channel (10 f) and is used for controlling on-off of the second pressure release channel (10 f) and the bottle head pressure release cavity (10 d).

5. The battery module level fire protection system with emergency starting of claim 1, wherein: an electric control selection valve (19) is arranged on the primary main pipe (11), the electric control selection valve (19) is arranged below the pack-stage main pipe (12), the other end of the electric control selection valve (19) is connected with a total submerged pipeline (20), and a plurality of nozzles (21) are arranged on the total submerged pipeline (20).

6. The battery module level fire protection system with emergency starting of claim 5, wherein: the electric control selector valve (19) comprises an electric control valve body (191), an electric control piston (192), an electric control valve core (193) and an electromagnetic starter (194), the electric control valve body (191) comprises an electric control inlet (19 a) and an electric control outlet (19 b), the electric control inlet (19 a) is communicated with a primary main pipe (11) through a pipeline, the electric control outlet (19 b) is communicated with a total submerged pipeline (20), the electric control piston (192) is arranged in the electric control valve body (191) and controls the on-off of the electric control inlet (19 a) and the electric control outlet (19 b), the electromagnetic starter (194) is arranged on the electric control valve body (191) and compresses the electric control valve core (193) on the electric control valve body (191), an electric control lower differential pressure cavity (19 c) is formed between the electric control valve core (193) and the electric control piston (192), an electric control upper differential pressure cavity (19 d) communicated with the electric control lower differential pressure cavity (19 c), a fourth pressure release channel (19 e) and a fifth pressure release channel (19 f) are arranged on the electric control valve core (193) and are communicated with the electric control upper differential pressure cavity (19 d) and the fifth pressure release channel (19 f), the fourth pressure release channel (19 e) is communicated with the electric control valve body (19 f), the electromagnetic starter (194) acts on the port of the fifth pressure relief channel (19 f) and is used for controlling the on-off of the fifth pressure relief channel (19 f) and the electrically controlled upper differential pressure cavity (19 d).

7. The battery module level fire protection system with emergency starting of claim 6, wherein: an upper piston groove (1921) is formed in the outer side wall of the upper end of the electric control piston (192), a piston upper sealing ring (195) is arranged in the upper piston groove (1921), a lower piston groove (1922) is formed in the outer side wall of the lower end of the electric control piston (192), and a piston lower sealing ring (196) is arranged in the lower piston groove (1922); a lower limit step (1911) is arranged in the electric control valve body (191), the lower limit step (1911) is a conical surface, a gap (19 h) is arranged between the electric control piston (192) and the lower limit step (1911), an annular groove (1961) is arranged on the upper end surface of the piston lower sealing ring (196), and an electric control outlet (19 b) is communicated with the annular groove (1961) through the gap (19 h).

8. The battery module level fire protection system with emergency initiation of any one of claims 1-7, wherein: the fire detection tube (17) is provided with a mechanical emergency starting device (18), the mechanical emergency starting device (18) comprises a parent body (181), a guide sleeve (182) and a cutter bar (183), the parent body (181) is provided with a guide hole (1811) and a mounting hole (1812), the mounting hole (1812) transversely penetrates through the parent body (181) and is communicated with the guide hole (1811), the fire detection tube (17) is arranged on the mounting hole (1812) through the guide sleeve (182), the cutter bar (183) stretches into the guide hole (1811) and is arranged right above the fire detection tube (17), and the cutter bar (183) is provided with a safety bolt (184) for preventing the cutter bar from falling; the outer circumferential surface of the parent body (181) is in threaded connection with two second nuts (185).