CN112891781B - Fire extinguishing system - Google Patents
Fire extinguishing system Download PDFInfo
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- CN112891781B CN112891781B CN201911226146.7A CN201911226146A CN112891781B CN 112891781 B CN112891781 B CN 112891781B CN 201911226146 A CN201911226146 A CN 201911226146A CN 112891781 B CN112891781 B CN 112891781B
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- fire extinguishing
- valve
- storage bottle
- fire
- 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
- A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
- A62C3/065—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products for containers filled with inflammable liquids
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/04—Control of fire-fighting equipment with electrically-controlled release
Abstract
The utility model discloses a extinguishing device and fire extinguishing system belongs to the oil storage tank technical field that puts out a fire. The method comprises the following steps: a plurality of circumference interval arrangements are in the extinguishing device on the floating plate of outer floating roof oil storage tank, extinguishing device includes: a plurality of closed shower nozzles, pressurized gas storage bottle, fire extinguishing agent storage bottle, first valve, second valve, pressure switch, liquid level switch, first terminal box and arc pipe. The gas outlet of the pressurized gas storage bottle is communicated with the inlet of the first valve, the outlet of the first valve is communicated with the gas inlet of the fire extinguishing agent storage bottle, the gas outlet of the fire extinguishing agent storage bottle is communicated with the inlet of the second valve, the outlet of the second valve is communicated with the arc-shaped pipe, a plurality of closed nozzles are arranged on the arc-shaped pipe along the uniform interval in the arc direction of the arc-shaped pipe, and the arc-shaped pipe is arranged along the circumference of the floating disc of the outer floating roof oil storage tank. The pressure switch and the liquid level switch are arranged on the fire extinguishing agent storage bottle. The fire extinguishing system can quickly detect the fire and extinguish the fire in the initial stage in time.
Description
Technical Field
The utility model relates to an oil storage tank fire extinguishing technical field, in particular to fire extinguishing system.
Background
The outer floating roof tank has an outer floating roof that rises or falls with the level of the stock solution. Compared with a fixed-top storage tank without a floating top, the storage tank has no space for oil storage and evaporation, reduces pollution and loss of oil products, and is the most widely used crude oil storage tank. The floating disc of the outer floating roof storage tank and the inner wall of the storage tank realize primary sealing and secondary sealing through the sealing ring, and the sealing ring is in contact with stored oil for a long time, so that the performance of the outer floating roof storage tank is aged, and the leakage of oil products such as oil spilling and the like often occurs. The sealing ring is easy to fire in lightning stroke, static electricity and open fire. If the sealing ring fire is not extinguished in time, the sealing ring can quickly spread, so that explosion accidents are easily caused, and great property loss is caused.
The related art generally employs a compressed air foam fire extinguishing system to extinguish a fire in an external floating roof tank. Compressed air foam fire extinguishing systems includes gaseous energy storage tank, foam mixed solution storage tank, compressed air storage tank and gas-liquid mixing device, through passing through the pipeline with the mixed solution of foam and water and compressed air and carrying gas-liquid mixing device in, with foam solution and water, foam solution and air mix in proportion, form the compressed air foam, then carry out the foam through the conveyer pipe and carry, spray the release through fixed pipe network and shower nozzle at last and realize putting out a fire.
Compressed air foam fire extinguishing systems among the correlation technique confirms behind the conflagration just can manual start and begin to prepare compressed air foam at the staff, need prepare through a plurality of processes after the rethread conveyer pipe carries the shower nozzle with compressed air foam, can not be fast with the foam spraying of putting out a fire cover in the department of catching a fire, need at least 1 minute time just can accomplish to put out a fire, has delayed the best opportunity of putting out a fire.
Disclosure of Invention
The embodiment of the disclosure provides a fire extinguishing system, can detect the conflagration fast and in time put out a fire to initial stage conflagration, technical scheme is as follows:
the embodiment of the present disclosure provides a fire extinguishing system for set up on the floating plate of outer floating roof oil storage tank, including a plurality of extinguishing device, a plurality of extinguishing device circumference interval arrange on the floating plate of outer floating roof oil storage tank, extinguishing device includes:
a plurality of closed nozzles, a pressurized gas storage bottle, a fire extinguishing agent storage bottle, a first valve, a second valve, a pressure switch, a liquid level switch, a first junction box and an arc-shaped pipe,
the pressurized gas storage bottle is provided with a gas outlet, the fire extinguishing agent storage bottle is provided with a gas inlet and a gas outlet,
the gas outlet of the pressurized gas storage bottle is communicated with the inlet of the first valve, the outlet of the first valve is communicated with the gas inlet of the fire extinguishing agent storage bottle, the gas outlet of the fire extinguishing agent storage bottle is communicated with the inlet of the second valve, the outlet of the second valve is communicated with the arc-shaped pipe, the closed nozzles are uniformly arranged on the arc-shaped pipe at intervals along the arc direction of the arc-shaped pipe, the arc-shaped pipe is arranged along the circumference of the floating disc of the outer floating roof oil storage tank, and the first valve and the second valve are normally open valves,
the pressure switch and the liquid level switch are installed on the fire extinguishing agent storage bottle, probes of the pressure switch and the liquid level switch are located in the fire extinguishing agent storage bottle, and the first junction box is connected with the pressure switch and the liquid level switch respectively.
Optionally, the middle portion of the arced tube is in communication with an outlet of the second valve, and both ends of the arced tube are sealed by plugs and/or valves.
Optionally, the fire suppression system further comprises a control device electrically connected to the first valve and the second valve, the control device configured to control the first valve and the second valve to close when the ends of the arced tube are unsealed; and after the two ends of the arc-shaped pipe are sealed by the plugs and/or the valves, the first valve and the second valve are controlled to be communicated.
Optionally, the control device is electrically connected to the plurality of fire suppression devices, the control device being located outside a fire dam of the outer floating roof storage tank.
Optionally, the fire extinguishing system further includes a second junction box, the plurality of first junction boxes are connected in series through a cable and electrically connected to the second junction box through one cable, and the second junction box is located outside the fire bank of the external floating roof oil storage tank and electrically connected to the control device.
Optionally, the fire suppressant reservoir is a heptafluoropropane reservoir.
Optionally, the pressurised gas storage cylinder is an inert gas cylinder.
Optionally, the fire extinguishing apparatus further comprises a gas release valve connected with the gas inlet of the fire extinguishing agent storage bottle.
Optionally, the fire extinguishing apparatus further comprises a pressure gauge, the pressure gauge is installed on the fire extinguishing agent storage bottle, and a probe of the pressure gauge is located in the fire extinguishing agent storage bottle.
Optionally, the fire extinguishing apparatus further includes a protection cabinet body, the pressurized gas storage bottle and the fire extinguishing agent storage bottle are located in the protection cabinet body, and the first junction box is installed on the protection cabinet body.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
according to the fire extinguishing system, a plurality of fire extinguishing devices are axially arranged on a floating disc of an outer floating roof oil storage tank at intervals, each fire extinguishing device is provided with an arc-shaped pipe arranged along the circumference of the floating disc of the outer floating roof oil storage tank, a plurality of closed nozzles are arranged in the arc direction of the arc-shaped pipe, and heat sensitive elements and sealing components in the closed nozzles are separated after sensing high temperature generated by a fire disaster, so that the closed nozzles are automatically communicated with the outside, the rapid injection of a fire extinguishing agent is realized, and the initial fire disaster is timely extinguished; meanwhile, the pressure switch and the liquid level switch sense the liquid level and the pressure change in the fire extinguishing agent storage bottle, and a fire alarm signal is sent to the outside through the junction box, so that the fire is rapidly detected.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic diagram of a fire suppression system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a fire extinguishing apparatus provided in an embodiment of the disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a fire suppression system provided by an embodiment of the present disclosure. As shown in fig. 1, the fire extinguishing system includes a plurality of fire extinguishing apparatuses 1, and the plurality of fire extinguishing apparatuses 1 are circumferentially spaced on a floating plate a of an outer floating roof oil storage tank.
Fig. 2 is a schematic structural diagram of a fire extinguishing apparatus provided in an embodiment of the disclosure. As shown in fig. 2, the fire extinguishing apparatus 1 includes:
a plurality of closed nozzles 11, a pressurized gas storage bottle 12, a fire extinguishing agent storage bottle 13, a first valve 14, a second valve 15, a pressure switch 16, a liquid level switch 17, a first junction box 18 and an arc-shaped pipe 19.
The pressurized gas reservoir 12 has an air outlet and the fire suppressant reservoir 13 has an air inlet and an air outlet.
The gas outlet of the pressurized gas storage bottle 12 is communicated with the inlet of the first valve 14, the outlet of the first valve 14 is communicated with the gas inlet of the fire extinguishing agent storage bottle 13, the gas outlet of the fire extinguishing agent storage bottle 13 is communicated with the inlet of the second valve 15, the outlet of the second valve 15 is communicated with the arc-shaped pipe 19, and the closed spray heads 11 are uniformly arranged on the arc-shaped pipe 19 at intervals along the arc direction of the arc-shaped pipe. Referring to fig. 1 and 2, the arc tube 19 is disposed along the circumference of the floating plate a of the outer floating roof tank, and the first valve 14 and the second valve 15 are normally open valves.
The pressure switch 16 and the liquid level switch 17 are installed on the fire extinguishing agent storage bottle 13, probes of the pressure switch 16 and the liquid level switch 17 are located in the fire extinguishing agent storage bottle 13, and the first junction box 18 is connected with the pressure switch 16 and the liquid level switch 17 respectively.
The pressure switch 16 includes a pressure sensor and a signal output circuit, when the probe in the pressure sensor detects that the gas pressure in the fire extinguishing agent storage bottle 13 is lower than a set value, the signal output circuit sends out a low-pressure alarm signal through a first junction box 18 connected with the pressure sensor, and the fire is indicated.
The liquid level switch 17 comprises a liquid level sensor and a signal output circuit, when a probe in the liquid level sensor detects that the liquid level of the fire extinguishing agent in the fire extinguishing agent storage bottle 13 is lower than a set value, the signal output circuit sends out a low liquid level alarm signal through a first junction box 18 connected with the signal output circuit, and a fire disaster is prompted to happen.
The fire extinguishing system provided in the embodiment of the present disclosure can store more fire extinguishing agent in the same volume of fire extinguishing agent storage bottle 13 space by opening the first valve 14 in the plurality of fire extinguishing devices 1, allowing the high-pressure gas in the pressurized gas storage bottle 12 to enter the fire extinguishing agent storage bottle 13, and converting the gaseous fire extinguishing agent in the fire extinguishing agent storage bottle 13 into liquid under the pressure of the high-pressure gas. After the fire extinguishing apparatus is assembled and pressure testing and debugging are completed, under the condition of ensuring no air leakage and liquid leakage, the second valve 15 is opened, and the pipeline from the air outlet of the fire extinguishing agent storage bottle 13 to the tail end closed nozzle 11 is filled with the liquid fire extinguishing agent under the pressure action of the high-pressure gas.
Every extinguishing device 1 in the fire extinguishing system all includes a plurality of closed shower nozzles 11, and extinguishing device still includes the curved pipe 19, and the curved pipe 19 communicates with the export of second valve 15, and a plurality of closed shower nozzles 11 are arranged on the curved pipe 19 along the even interval of the circular arc direction of curved pipe 19. In the embodiment of the present disclosure, each fire extinguishing apparatus includes a plurality of closed nozzles 11, and a plurality of closed nozzles 11 are arranged on the arc pipe 19 along the arc direction of the arc pipe 19 at even intervals, and the arc pipe 19 is arranged along the circumference of the floating plate a of the outer floating roof oil storage tank, and a plurality of closed nozzles 11 in each fire extinguishing apparatus can detect and extinguish fire to the spacing hole between the floating plate and the inner wall of the storage tank in a sector area close to the fire extinguishing apparatus.
The closed spray head is an automatic spray head with a heat sensitive element and a sealing component thereof. The heat sensitive element can act in a preset temperature range, so that the heat sensitive element and the sealing component thereof are separated from the spray head main body, and the fire extinguishing agent is sprayed out to extinguish fire in a specified protection area according to a specified state and a specified spraying amount.
When a fire disaster occurs, the heat sensitive element and the sealing component in the closed spray head 11 are separated from the spray head, and the closed spray head 11 is communicated with the outside. After contacting with the external atmospheric pressure, the liquid fire extinguishing agent in the pipeline is changed from liquid state to gas state, and is sprayed out from the closed spray head 11 under the pressure action of high-pressure gas, so as to extinguish the fire of the area where the fire breaks out. When the fire extinguishing apparatus extinguishes a fire, the liquid fire extinguishing agent in the fire extinguishing agent storage bottle 13 is consumed, and the liquid level and pressure in the fire extinguishing agent storage bottle 13 are rapidly reduced. After the probes of the pressure switch 16 and the liquid level switch 17 in the fire extinguishing agent storage bottle sense the liquid level and the pressure reduction, the pressure switch 16 and the liquid level switch 17 send out fire alarm signals to the outside through the connected first junction box 18, and fire alarm information can be sent out to the outside while fire extinguishing is carried out. Compressed air foam fire extinguishing systems among the correlation technique need the staff after confirming thermal sensor or fire alarm's alarm information rethread manual start fire extinguishing foam's preparation and put out a fire, and this extinguishing device is more timely and rapid to the discernment of conflagration and putting out a fire.
According to the fire extinguishing system, a plurality of fire extinguishing devices are axially arranged on a floating disc of an outer floating roof oil storage tank at intervals, each fire extinguishing device is provided with an arc-shaped pipe arranged along the circumference of the floating disc of the outer floating roof oil storage tank, a plurality of closed nozzles are arranged in the arc direction of the arc-shaped pipe, and heat sensitive elements and sealing assemblies in the closed nozzles are separated after sensing high temperature generated by a fire, so that the closed nozzles are automatically communicated with the outside, the rapid injection of a fire extinguishing agent is realized, and the initial fire is timely extinguished; meanwhile, the pressure switch and the liquid level switch sense the liquid level and the pressure change in the fire extinguishing agent storage bottle, and a fire alarm signal is sent to the outside through the junction box, so that the fire is rapidly detected.
In the embodiment of the present disclosure, a fusible alloy welding part is used as a heat sensitive element in the closed nozzle 11, and when the temperature is higher than 93 ℃, the fusible alloy welding part melts to conduct the closed nozzle 11.
Illustratively, in the embodiment of the present disclosure, the pressurized gas storage bottle 12 and the fire extinguishing agent storage bottle 13 are connected by a high-pressure metal hose, and the high-pressure metal hose is formed by a thin-wall stainless steel tube through hydraulic forming, so that the high-pressure metal hose has strong flexibility, bending and vibration resistance, has higher pressure bearing capacity, and can better bear the pressure of the high-pressure gas from the pressurized gas storage bottle 12 to the fire extinguishing agent storage bottle 13. Fire extinguishing agent storage bottle 13 passes through nonrust steel pipe with closed shower nozzle 11 and is connected, and nonrust steel pipe has outstanding high temperature resistant, low temperature resistant and corrosion resistance, improves the life who is located the pipeline between closed shower nozzle 11 and the fire extinguishing agent storage bottle 13 under the open-air environment.
It should be noted that after the fire extinguishing system is assembled, the pipeline between the fire extinguishing agent storage bottle 13 and the closed type nozzle 11 is usually pressure-tested. Namely, the second valve 15 is closed, water pressure which is 1.5 times of the working pressure is injected into the stainless steel pipe between the second valve 15 and the closed nozzle 11, the pressure is maintained for a period of time, if the pressure is reduced within a normal range after a specified time, the stainless steel pipe is connected tightly, no leakage point exists, the pressure is reduced, and the pressure testing debugging is completed. The dwell time is considered comprehensively according to the length and the pipe diameter of the stainless steel pipe and the driving pressure, and the disclosure is not limited herein. In the embodiment of the present disclosure, after completing the pressure test and debugging of the stainless steel tube, the first valve 14 and the second valve 15 are adjusted to be in the normally open state, so as to ensure that the fire extinguishing agent in the fire extinguishing agent storage bottle 13 can be sprayed out from the closed nozzle at any time, and a fire disaster is timely extinguished.
Illustratively, in the embodiment of the present disclosure, the first valve 14 and the second valve 15 are both solenoid valves, and are controlled by connected solenoid drivers, and the solenoid drivers control the first valve 14 and the second valve 15 to be opened and closed after receiving a control command. After the pressure test debugging of accomplishing nonrust steel pipe, electromagnetic driver controls first valve 14 and second valve 15 and switches on after receiving the instruction, adjusts first valve 14 and second valve 15 to normally open state, guarantees that the fire extinguishing agent in the fire extinguishing agent storage bottle 13 can spout from closed shower nozzle at any time, in time puts out the conflagration.
Exemplarily, in the embodiment of the present disclosure, each fire extinguishing apparatus is spaced apart from an adjacent fire extinguishing apparatus by a distance of 40m in a circumferential direction of the floating plate a.
Illustratively, in the disclosed embodiment, each closed sprinkler 11 is spaced from an adjacent closed sprinkler 11 by a distance of no more than two meters in the direction of the arc of the arced tube 19.
Optionally, the middle of the arced tube 19 is in communication with the outlet of the second valve 15, and both ends of the arced tube 19 are sealed by plugs and/or valves. And adopt every closed shower nozzle 11 all to be connected the mode through a stainless steel pipe and fire extinguishing agent storage bottle 13, the equipment is troublesome and take up space too big, and inconvenient staff maintains and changes closed shower nozzle 11. Through arranging a plurality of closed shower nozzles 11 evenly at an interval on an arc pipe 19, arrange this arc pipe 19 again at the edge of floating plate an, can distribute a plurality of closed shower nozzles 11 in the fire extinguishing coverage who corresponds extinguishing device, only need can realize being connected with the correspondence of extinguishing agent storage bottle 13 in a plurality of closed shower nozzles 11 and the extinguishing device through a nonrust steel pipe of being connected with this arc pipe 19 middle part. The use amount of the stainless steel pipe is reduced, meanwhile, the occupied space is small, and the manufacturing cost of the fire extinguishing system is reduced.
Illustratively, in the disclosed embodiment, the arced tube 19 and the stainless steel tube connected to the outlet of the second valve 15 are both 316 stainless steel tubes.
In the embodiment of the present disclosure, after the fire extinguishing system is assembled, in order to conveniently perform a pressure test and debugging, whether the stainless steel pipeline between the closed type nozzle 11 and the second valve 15 has a leakage condition or not is checked, the two ends of the arc pipe 19 extending along the arc direction are set to be in an open shape communicated with the outside, and the pipeline is conveniently pressurized by injecting water into the pipeline from the tail end of the arc pipe 19. After the pressure test debugging of the stainless steel pipe is completed, the two ends of the arc-shaped pipe 19 are sealed through the plug and/or the valve, so that the leakage of the fire extinguishing agent is avoided, and the sealing performance of the fire extinguishing system is improved.
In one possible implementation, a stop valve 19a is disposed at each end of the arc tube 19, an inlet of the stop valve 19a is connected to the arc tube 19, and a plug 19b is connected to an outlet of the two stop valves 19a to achieve further sealing. In other possible implementations, the two ends of the arced tube 19 may also be sealed by the stop valve 19a or the plug 19b, which is not limited in the embodiment of the present disclosure.
Optionally, the fire extinguishing system further comprises a control device 2, the control device 2 being electrically connected to the first valve 14 and the second valve 15, the control device 2 being configured to control the first valve 14 and the second valve 15 to close when the two ends of the arced tube 19 are not sealed; after the two ends of the arc-shaped pipe 19 are sealed by plugs and/or valves, the first valve 14 and the second valve 15 are controlled to be communicated. In the embodiment of the disclosure, when a leakage test needs to be performed on a stainless steel pipeline between the closed nozzle 11 and the second valve 15, the control device 2 sends a signal for closing the valves to the electromagnetic drivers on the first valve 14 and the second valve 15, controls the first valve 14 and the second valve 15 to close, and enables a worker to fill water into the stainless steel pipe from two ends of the arc pipe 19 to test the pressure. After water injection pressure testing is completed, after two ends of the arc-shaped pipe 19 are sealed through the plugs and/or the valves, the control device 2 sends signals for opening the valves to the electromagnetic drivers on the first valve 14 and the second valve 15 to control the first valve 14 and the second valve 15 to be conducted, and before fire extinguishing agents in the fire extinguishing agent storage bottle 13 are transmitted to the closed type spray head 11 under the pressure action of pressurized gas, the fire extinguishing agents in the fire extinguishing agent storage bottle 13 can be sprayed out from the closed type spray head at any time, and fire disasters are timely extinguished.
Optionally, the control device 2 is electrically connected with a plurality of fire extinguishing devices 1, and the control device 2 is located outside the fire dike of the external floating roof oil storage tank. A plurality of extinguishing device 1 circumference interval arrangement realize the interval hole between the floating plate a of external floating roof storage tank and the storage tank inner wall, the regional cover between primary seal and the secondary seal between floating plate and the storage tank inner wall promptly, listen and put out a fire to the conflagration that appears in this region. The signal lines of the plurality of fire extinguishing devices are electrically connected to the control device 2 located outside the bank of the external floating roof tank through a first junction box 18. The control device 2 has a liquid crystal display function, can detect and collect pressure and liquid level information of the fire extinguishing agent storage bottles 13 in all the fire extinguishing devices and fire alarm signals sent out by the first junction box 18, visually displays the pressure and liquid level information, and facilitates observation of working conditions of the fire extinguishing devices 1 by workers on the periphery of a fire bank of a floating roof oil storage tank. When a fire disaster occurs, the control device 2 receives a fire alarm signal of the fire extinguishing device 1 at the corresponding position, and a worker can confirm the position where the fire disaster occurs on the external floating roof oil storage tank at a position far away from a fire scene and quickly organize follow-up fire extinguishing and fine work.
Optionally, the fire extinguishing system further comprises a second junction box 3, a plurality of first junction boxes 18 are connected in series through cables and electrically connected with the second junction box 3 through a cable, and the second junction box 3 is located outside the fire bank of the outer floating roof oil storage tank and electrically connected with the control device 2. The plurality of first junction boxes 18 are electrically connected with the second junction box 3 located outside the fire dike through a cable after being connected in series through the cable, so that the number of cables for transmitting signals is reduced, and the maintenance and the replacement are convenient.
Illustratively, the first junction box 18 and the second junction box 3 are connected through an armored control cable, and the armored cable improves the anti-corrosion capability, the tensile strength and the compressive strength by adding a mechanical protective layer on the periphery of the cable, so that the service life of the cable for transmitting signals between the first junction box 18 and the second junction box 3 in the fire extinguishing system is prolonged.
Exemplarily, in the embodiment of the present disclosure, the first terminal box 18 and the second terminal box 3 are both explosion-proof terminal boxes.
Illustratively, a compressed air foam fire extinguishing system or a conventional fixed foam fire extinguishing system in the related art can be simultaneously arranged in the oil storage area, the control device 2 can be electrically connected with the oil storage control room 113, so that workers on duty in the oil storage control room 113 and workers on site patrol can receive a fire alarm signal at the same time, and after confirming that a fire occurs, the workers start the foam fire extinguishing system manually or by a program to further extinguish the fire at the position where the fire occurs.
Alternatively, the fire suppressant reservoir 13 is a heptafluoropropane reservoir. In the disclosed embodiment, the fire extinguishing apparatus 1 employs heptafluoropropane as a fire extinguishing agent. The chemical formula of heptafluoropropane is: CH3CHFCF3 has the advantages of no color, no odor, low toxicity, no electric conduction, small storage space, high critical temperature, low critical pressure, and gas state at normal temperature and normal pressure.
Illustratively, the freezing point temperature of the heptafluoropropane can reach-131 ℃, the design temperature range can reach-50 ℃ to 85 ℃, the state is stable, and the heptafluoropropane fire extinguishing device is not easily affected by the extreme environmental temperature to change the state, so that the fire extinguishing effect of the fire extinguishing device 1 is affected.
Illustratively, in the disclosed embodiment, the volume of the fire extinguishing agent storage bottle 13 is 60L or 80L.
Illustratively, in the embodiment of the present disclosure, the working pressure of the high-pressure gas in the pressurized gas storage bottle 12 is 4.2Mpa, and after the high-pressure gas in the pressurized gas storage bottle 12 enters the fire extinguishing agent storage bottle 13, the heptafluoropropane gas is liquefied under the pressure of the pressurized gas and stored in the fire extinguishing agent storage bottle 13 in a liquid state, so that the probe of the liquid level switch can conveniently detect the storage amount change of the heptafluoropropane fire extinguishing agent. Meanwhile, the heptafluoropropane in the liquid form occupies a smaller storage space, and the fire extinguishing agent storage bottle 13 can store more heptafluoropropane fire extinguishing agents, so that the service life of the fire extinguishing agent storage bottle is prolonged.
Optionally, the pressurized gas reservoir 12 is an inert gas cylinder. In the disclosed embodiment, an inert gas having a density lower than that of the fire extinguishing agent in the fire extinguishing agent storage bottle 13 is generally used as the pressurized gas, such as nitrogen. Nitrogen is a colorless and odorless gas in general, is chemically stable, and is difficult to react with other substances. In the disclosed embodiment, the fire extinguishing apparatus 1 uses nitrogen gas as the pressurized gas to compress the fire extinguishing agent in the fire extinguishing agent storage bottle 13. When a fire disaster occurs, the closed type spray head 11 is conducted, and the high-pressure nitrogen provides power for the fire extinguishing agent in the fire extinguishing agent storage bottle 13 and is sprayed out from the closed type spray head to extinguish the fire. Illustratively, heptafluoropropane is used as the fire extinguishing agent in the disclosed embodiment, while nitrogen, which has a density lower than that of heptafluoropropane, is always present in the upper layer of heptafluoropropane in a gaseous and liquid state in the fire extinguishing agent storage bottle 13. And the nitrogen has stable chemical property and can not react with the heptafluoropropane, and is used as a power gas in the fire extinguishing device 1 to compress and push the heptafluoropropane fire extinguishing agent, so that the nitrogen is stable and reliable.
Optionally, the fire extinguishing apparatus 1 further comprises a purge valve 110, the purge valve 110 being connected to an inlet of the fire suppressant storage bottle 13. In the embodiment of the present disclosure, when the gas pressure in the fire extinguishing agent storage bottle 13 exceeds a predetermined value, for example, exceeds the working pressure of high-pressure gas by 4.2Mpa, the air release valve 110 is turned on and releases the gas, so as to prevent the fire extinguishing apparatus 1 from being damaged due to the overhigh pressure in the fire extinguishing agent storage bottle, and protect pipelines, the fire extinguishing agent storage bottle and supporting facilities.
Illustratively, in the embodiment of the present disclosure, the purge valve 110 is a safety valve, and the safety valve plays a role of safety protection in the system, when the system pressure exceeds a set value, the safety valve is opened to discharge a part of gas/fluid in the system to the atmosphere, so that the system pressure does not exceed the set value, thereby ensuring that the system does not have an accident due to over-pressure. ,
optionally, the fire extinguishing apparatus 1 further comprises a pressure gauge 111, the pressure gauge 111 is mounted on the fire extinguishing agent storage bottle 13, and a probe of the pressure gauge 111 is located in the fire extinguishing agent storage bottle 13. The pressure gauge 111 can display the pressure in the fire extinguishing agent storage bottle 13 at present, and the pressure in the fire extinguishing agent storage bottle 13 can be visually known by a worker when the fire extinguishing device 1 is patrolled and examined.
Illustratively, the operator can calibrate the fire extinguishing apparatus 1 according to the indication of the pressure gauge 111. If the pressure in the fire extinguishing agent storage bottle 13 is lower than the standard value, the fire extinguishing agent in the fire extinguishing agent storage bottle 13 is supplemented, or the first valve 14 is adjusted to increase the pressure of the gas entering the fire extinguishing agent storage bottle from the pressurized gas storage bottle 12, so that the pressure in the fire extinguishing agent storage bottle 13 reaches the standard value; if the pressure in the fire extinguishing agent storage bottle 13 is higher than the standard value, the air release valve 110 is opened to release air, so that the pressure returns to the standard value, the stable operation of the fire extinguishing device 1 is ensured, and the fire can be extinguished in time at any time.
It should be noted that the standard value of the pressure in the fire extinguishing agent storage bottle 13 is determined according to the specific working environment, and the embodiment of the present disclosure does not limit this.
Optionally, the fire extinguishing apparatus 1 further comprises a protective cabinet 112, the pressurized gas storage bottle 12 and the fire extinguishing agent storage bottle 13 are located inside the protective cabinet 112, and the first junction box 18 is mounted on the protective cabinet 112. In the embodiment of the present disclosure, the protection cabinet 112 is a steel cabinet, and has high structural strength, and the pressurized gas storage bottle 12, the fire extinguishing agent storage bottle 13, and the related supports, bases, and other supporting facilities are disposed in the protection cabinet 112, so that the pressurized gas storage bottle 12 and the fire extinguishing agent storage bottle 13 can be isolated from the open air, thereby avoiding the long-term exposure to severe environments such as sunlight, rain, thunderstorm, and the like, which causes non-artificial damage, and further improving the service life of the fire extinguishing apparatus 1.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (8)
1. A fire extinguishing system for setting up on floating plate (a) of outer floating roof oil storage tank, its characterized in that, including controlling means (2) and a plurality of extinguishing device (1), a plurality of extinguishing device (1) circumference interval arrangement is in on floating plate (a) of outer floating roof oil storage tank, extinguishing device (1) includes:
a plurality of closed spray heads (11), a pressurized gas storage bottle (12), a fire extinguishing agent storage bottle (13), a first valve (14), a second valve (15), a pressure switch (16), a liquid level switch (17), a first junction box (18) and an arc-shaped pipe (19),
the pressurized gas storage bottle (12) is provided with an air outlet, the fire extinguishing agent storage bottle (13) is provided with an air inlet and an air outlet,
the gas outlet of pressurization gas storage bottle (12) with the import intercommunication of first valve (14), the export of first valve (14) with the air inlet intercommunication of fire extinguishing agent storage bottle (13), the gas outlet of fire extinguishing agent storage bottle (13) with the import intercommunication of second valve (15), the export of second valve (15) with arc pipe (19) intercommunication, a plurality of closed shower nozzles (11) are followed the even interval arrangement in the circular arc direction of arc pipe (19) is in on arc pipe (19), arc pipe (19) are followed the circumference of floating plate (a) of outer floating roof oil storage tank arranges, first valve (14) with second valve (15) are normally open valve, the middle part of arc pipe (19) with the export intercommunication of second valve (15), the both ends of arc pipe (19) are sealed through end cap and/or valve,
the pressure switch (16) and the liquid level switch (17) are installed on the fire extinguishing agent storage bottle (13), probes of the pressure switch (16) and the liquid level switch (17) are located in the fire extinguishing agent storage bottle (13), the first junction box (18) is respectively connected with the pressure switch (16) and the liquid level switch (17),
the control device (2) is electrically connected with the first valve (14) and the second valve (15), and the control device (2) is configured to control the first valve (14) and the second valve (15) to be closed when the two ends of the arc-shaped pipe (19) are not sealed; and after the two ends of the arc-shaped pipe (19) are sealed by plugs and/or valves, the first valve (14) and the second valve (15) are controlled to be communicated.
2. Fire extinguishing system according to claim 1, characterized in that the control device (2) is electrically connected to the plurality of fire extinguishing devices (1), the control device (2) being located outside the fire dam of the outer floating roof tank.
3. Fire extinguishing system according to claim 2, characterized in that it further comprises a second junction box (3), a plurality of said first junction boxes (18) being connected in series by a cable and electrically connected to said second junction box (3) by one said cable, said second junction box (3) being located outside the fire dam of the external floating roof tank and electrically connected to said control device (2).
4. Fire extinguishing system according to claim 1, characterized in that the fire extinguishing agent reservoir (13) is a heptafluoropropane reservoir.
5. Fire extinguishing system according to claim 1, characterized in that the pressurized gas storage cylinder (12) is an inert gas cylinder.
6. Fire extinguishing system according to any one of claims 1 to 5, characterized in that the fire extinguishing device further comprises a gas release valve (110), the gas release valve (110) being connected to the gas inlet of the fire suppressant storage bottle (13).
7. A fire extinguishing system according to any one of claims 1 to 5, characterized in that the fire extinguishing apparatus further comprises a pressure gauge (111), the pressure gauge (111) being mounted on the fire extinguishing agent storage bottle (13), the probe of the pressure gauge (111) being located in the fire extinguishing agent storage bottle (13).
8. Fire extinguishing system according to any one of claims 1 to 5, characterized in that the fire extinguishing device further comprises a protective cabinet (112), the pressurized gas storage bottle (12) and the fire extinguishing agent storage bottle (13) being located inside the protective cabinet (112), the first junction box (18) being mounted on the protective cabinet (112).
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| CN201911226146.7A CN112891781B (en) | 2019-12-04 | 2019-12-04 | Fire extinguishing system |
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| CN201911226146.7A CN112891781B (en) | 2019-12-04 | 2019-12-04 | Fire extinguishing system |
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| CN112891781B true CN112891781B (en) | 2022-07-05 |
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| CN113440766A (en) * | 2021-08-06 | 2021-09-28 | 成都贝克森科技发展有限公司 | Forest fire prevention intelligent spraying system that puts out a fire |
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