CN113058187A - Fire extinguishing explosion-proof equipment using liquid nitrogen as fire extinguishing agent - Google Patents
Fire extinguishing explosion-proof equipment using liquid nitrogen as fire extinguishing agent Download PDFInfo
- Publication number
- CN113058187A CN113058187A CN202110492752.4A CN202110492752A CN113058187A CN 113058187 A CN113058187 A CN 113058187A CN 202110492752 A CN202110492752 A CN 202110492752A CN 113058187 A CN113058187 A CN 113058187A
- Authority
- CN
- China
- Prior art keywords
- valve
- fire extinguishing
- pump
- fire
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 239000007788 liquid Substances 0.000 title claims abstract description 101
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 53
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 238000004880 explosion Methods 0.000 claims abstract description 13
- 239000000779 smoke Substances 0.000 claims abstract description 10
- 238000000746 purification Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 235000019362 perlite Nutrition 0.000 claims description 3
- 239000010451 perlite Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims 1
- 230000001629 suppression Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000012774 insulation material Substances 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000005429 filling process Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 150000001350 alkyl halides Chemical class 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The fire extinguishing and explosion preventing equipment with liquid nitrogen as fire extinguishing agent consists of storage tank, evaporator, ultralow temperature liquid pump, electric automatic valve set, heat insulating pipe, nozzle and control system. The storage tank is a cylindrical tank body, the wall of the tank body is divided into three layers and is formed by a stainless steel welding machine, the interlayer is filled with heat insulation materials, and the tank body is provided with a pressure gauge, a liquid level gauge, a safety valve, a tank emptying valve, an evaporator valve, a liquid filling valve, a purification valve and an ultralow temperature pump valve; is provided with an evaporator and an ultralow temperature liquid pump; the electric automatic control valve group comprises an evaporator valve, an ultralow temperature pump valve, a pump emptying valve and a flow divider; the control system comprises a temperature sensing detector, a smoke sensing detector, a gas detector, an alarm, a CRT display system, a linkage controller and a fire extinguishing control panel. The tank body has good heat insulation effect, nitrogen does not leak under the pressure-resistant state of 0.8MPa at the temperature of liquid nitrogen-196 ℃, the fire extinguishing and explosion prevention automatic monitoring can be realized, the fire condition can be quickly cooled, the fire extinguishing is quick, the environment can not be polluted, the material and the material of a fire place can not be damaged, the underground gas concentration can be controlled, and the personal and property loss caused by explosion can be avoided.
Description
Technical Field
The invention belongs to the technical field of fire-fighting, fire-extinguishing and explosion-proof, and particularly relates to fire-extinguishing and explosion-proof equipment taking liquid nitrogen as a fire extinguishing agent.
Background
At present, fire extinguishing agents used for fire fighting at home and abroad mainly comprise water, foam, alkyl halide series, high-pressure carbon dioxide, low-pressure carbon dioxide and the like, the fire extinguishing agents have serious pollution and damage to important secretary files and valuables, the alkyl halide series fire extinguishing agents also have a destructive effect on the atmospheric ozone layer, and are gradually eliminated in the global range; the high-pressure carbon dioxide and the low-pressure carbon dioxide have certain influence on the effect of the atmospheric greenhouse. Utilize the liquid nitrogen as fire extinguishing agent, can absorb a large amount of heats in gasification, make the fire cool down rapidly, reach the effect of putting out a fire fast to nitrogen gas can not the polluted environment, can play the guard action to secretary archives, valuables etc.. However, the heat insulation treatment of the common liquid nitrogen storage tank is not well solved, the heat insulation performance is poor, the liquid state can be seriously leaked after long-term storage, when a fire disaster happens, the performance of the storage tank cannot meet the specified requirements, and the liquid nitrogen storage tank is rarely applied to non-special emergency occasions. So far, no precedent is used for explosion prevention by using liquid nitrogen as a fire extinguishing agent, especially the frequent explosion accidents caused by underground gas of a coal mine, and if the fire extinguishing and explosion preventing device using the liquid nitrogen as the fire extinguishing agent is adopted, the fire extinguishing and explosion preventing device has great significance for underground safety and loss reduction.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a fire-extinguishing explosion-proof device taking liquid nitrogen as a fire extinguishing agent, wherein a liquid nitrogen storage tank can store the liquid nitrogen at the temperature of 196 ℃ below zero for a long time without loss and leakage, is arranged in buildings, important military facilities, toxic and harmful chemical enterprises and other occasions, can automatically alarm when a fire occurs, automatically starts a corresponding valve of a fire scene, sprays the liquid nitrogen to the fire scene, can rapidly cool and extinguish the fire, cannot pollute the environment, and can play a role in protecting secretary files, valuable articles and the like; install in colliery underworkings, can automatic alarm when gas concentration reaches 2.5%, the personnel in the pit of being convenient for in time withdraw or maintain, rise when gas concentration, can open the valve automatically, the liquid nitrogen blowout, the liquid nitrogen can turn into nitrogen gas with 643 times, when diluting gas concentration, can make on-the-spot rapid cooling, can not form 5.5% explosion limit forever, play the blast proof effect.
The technical scheme of the invention is as follows: a fire-extinguishing explosion-proof equipment using liquid nitrogen as fire-extinguishing agent is composed of storage tank, evaporator, ultralow-temp liquid pump, electric self-control valve set, heat-insulating pipeline, nozzle and control system.
The storage tank is a cylindrical tank body and is provided with an arched end socket, the wall of the tank body is divided into three layers and is formed by a stainless steel welding machine, an aluminum powder electrostatic spraying layer is arranged outside the tank body, a heat insulation layer is filled between the outer layer wall and the middle layer liner after vacuumizing, the heat insulation layer is made of foamed polyurethane or perlite, and a liquid argon layer is filled between the middle layer liner and the inner layer liner after vacuumizing. The three-layer tank body wall and the double-layer heat insulation can keep the liquid nitrogen with the pressure resistance of 0.8MPa and the temperature resistance of-196 ℃ in the tank body to be stored for a long time without loss and leakage. The upper part of the tank body is provided with a pressure gauge, a liquid level gauge, a safety valve and a tank emptying valve, and the lower part of the storage tank is provided with an evaporator valve, a liquid filling valve, a purification valve and an ultra-low temperature pump valve.
The inlet of the evaporator is connected with the evaporator valve, and the outlet is connected with the upper part of the tank body through a pipeline. When the fire extinguishing operation is carried out, the evaporator valve is opened, a small amount of liquid nitrogen in the storage tank flows through the evaporator and is gasified into nitrogen, and the nitrogen enters the upper part of the storage tank to form certain pressure in the tank, so that the liquid nitrogen in the tank can be conveniently discharged. The evaporator can be one of a coil natural air-cooled type or a coil forced air-cooled type.
The inlet of the ultra-low temperature liquid pump is connected with the ultra-low temperature pump valve, and the outlet is connected with the flow divider and the pump emptying valve through the heat insulation pipe. The heat insulation pipe adopts a hose at a bending or moving part, and the hose can be one of a low-temperature resistant soft fiber pipe or a low-temperature resistant metal corrugated pipe; the number of the flow dividing valves is determined according to the number of nozzles arranged in a protection area, and the nozzles are one or more of a straight-flow type, a flow dispersing type, a spraying type and a rotating type; the ultra-low temperature liquid pump must achieve the following technical indexes:
temperature of the medium: -196 ℃ C
Inlet pressure: 0.2 to 0.65MPa
Outlet pressure: 1.0 to 1.45MPa
Yang Cheng H80 m
The precooling time of the system is less than or equal to 15 seconds
The electric automatic control valve group comprises an evaporator valve, an ultralow temperature pump valve, a pump emptying valve and a flow divider, and the valves are controlled to be opened and closed by a fire extinguishing control panel.
The control system comprises a temperature-sensing detector, a smoke-sensing detector, a gas detector, an alarm, a CRT display system, a linkage controller and a fire extinguishing control panel. Wherein the temperature detector, smoke detector and gas detector are selected according to the requirement of the protection area. The signal receiving device of the linkage controller is connected with the temperature-sensitive detector, the smoke-sensitive detector and the alarm circuit, the control output circuit of the linkage controller is connected with the fire-extinguishing control panel, and the fire-extinguishing control panel controls the motors of the related electric automatic control valve and the ultralow temperature liquid pump through the circuit. The control system is divided into manual and automatic control, and when a power switch QC、QDWhen the change-over switch SA is at the manual position, the system is in the manual working state, and when the power switch QC、QDWhen the change-over switch SA is located at the automatic position, the system is in an automatic control state.
The use method of the invention comprises the following steps:
before liquid nitrogen is filled for the first time, the heat insulation layer and the liquid argon layer are ensured to be in a vacuum state, the safety valve, the liquid level meter valve, the pressure gauge valve and the tank emptying valve are in an open state, and the evaporator valve, the liquid filling valve, the purification valve, the ultra-low temperature pump valve, the flow divider valve and the pump emptying valve are in a closed state. Then a small amount of nitrogen is filled into the tank, impurities in the tank are washed away, the purification valve is released, the nitrogen and the impurities in the tank are discharged, and then the purification valve is closed.
And in the liquid nitrogen filling process, firstly, connecting a liquid filling pipeline with a liquid filling valve, then opening the liquid filling valve for filling, paying attention to observe a liquid level meter in the filling process, closing the liquid filling valve and a tank emptying valve in time when the liquid filling pipeline is full, removing the liquid nitrogen filling pipeline, and completing filling.
In the explosion-proof fire extinguishing process, when the temperature detector, the smoke detector and the gas detector in a protection area (BHQ) sense and reach set values, an alarm gives an alarm and transmits information to a linkage controller, a control output circuit of the linkage controller is connected with a fire extinguishing control panel, a related electric automatic control valve and a motor of an ultralow temperature liquid pump are controlled by the fire extinguishing control panel, liquid nitrogen is sprayed to a fire point from a nozzle and is vaporized, the temperature of a fire scene and the oxygen content in air are rapidly reduced, the fire is extinguished, and meanwhile, a CRT display system displays and records data. When the liquid nitrogen is used in a mine, the liquid nitrogen is discharged, and the concentration of gas in the mine is diluted after vaporization, so that an explosion-proof effect is achieved. When the liquid level meter displays that the liquid nitrogen in the tank is insufficient, the evaporator valve and the ultralow temperature liquid pump are automatically closed, and the fire extinguishing and explosion prevention is finished.
The invention has the beneficial effects that: the tank body is formed by welding three layers of special low-temperature-resistant steel plate materials, and due to the existence of the heat insulation material layer, the liquid argon layer and the outermost aluminum foil layer, the heat insulation effect can be effectively achieved, the pressure resistance of the tank body is guaranteed to be 0.8MPa, the tank body is adaptive to the constant pressure of-196 ℃ and stable, and nitrogen is not leaked; due to the existence of the liquid nitrogen evaporator, when the pressure in the tank is insufficient during fire extinguishing, the pressure in the tank can be increased through vaporization of liquid nitrogen after the tank is opened, and the fire extinguishing efficiency is ensured; and thirdly, the fire extinguishing agent is non-toxic and non-conductive due to liquid nitrogen, can extinguish fire quickly without leaving traces, and is suitable for being stored in relatively closed places such as documents, cultural relics, files, valuable articles and the like. The fire extinguishing agent has great significance for fire extinguishing in protection areas such as large-scale oil depots, military facilities, military ships, chemical dangerous goods depots, ammunition depots, nuclear power stations, inflammable and explosive places, airports, docks and the like, and can effectively control gas explosion and avoid personal and property loss when being installed and used in underground coal mine roadways.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the tank structure of the present invention;
fig. 3 is a control program block diagram of the present invention.
The labels in the figure are: 1-storage tank, 101-outer wall, 102-heat insulating layer, 103-middle layer liner, 104-liquid argon layer, 105-inner layer liner, 11-pressure gauge, 12-safety valve, 13-tank blow-down valve, 14-liquid level meter, 15-liquid filling valve, 16-ultralow temperature pump valve, 17-ultralow temperature liquid pump, 18-evaporator valve, 19-liquid nitrogen evaporator, 20-heat insulating pipe, 21-shunt valve, 22-nozzle, 23-temperature detector, 24-smoke detector, 25-gas detector, 26-alarm, 27-fire extinguishing control panel, 28-CRT display system, 29-linkage controller, 30-purification valve and 31-pump blow-down valve.
Detailed Description
The following describes in detail a specific embodiment of the liquid nitrogen storage tank according to the present invention with reference to the accompanying drawings.
As shown in attached figures 1 and 2, the fire-extinguishing explosion-proof equipment using liquid nitrogen as a fire extinguishing agent comprises a storage tank 1, an evaporator 19, an ultralow-temperature liquid pump 17, an electric automatic control valve group, a heat insulation pipe 20, a nozzle 22 and a control system.
The storage tank 1 is a cylindrical tank body with an arched end socket, the wall of the tank body is divided into three layers and is formed by a stainless steel welding machine, a heat insulating layer 102 is filled between an outer layer wall 101 and a middle layer liner 103 after vacuum pumping, the heat insulating layer 102 is made of foamed polyurethane or perlite, a liquid argon layer 104 is filled between the middle layer liner 103 and an inner layer liner 105 after vacuum pumping. The three-layer tank body wall and the double-layer heat insulation can keep the liquid nitrogen with the pressure resistance of 0.8MPa and the temperature resistance of-196 ℃ in the tank body to be stored for a long time without loss and leakage. The upper surface of the storage tank 1 is provided with a pressure gauge 11, a liquid level gauge 14, a safety valve 12 and a tank emptying valve 13, and the lower part of the storage tank 1 is provided with an evaporator valve 18, a liquid filling valve 15, a purification valve 30 and an ultra-low temperature pump valve 16.
The inlet of the evaporator 19 is connected with the evaporator valve 18, and the outlet is connected with the upper part of the tank body through a pipeline. When fire extinguishing operation is carried out, the evaporator valve 18 is opened, a small amount of liquid nitrogen in the storage tank 1 flows through the evaporator 19 and is gasified into nitrogen gas, and the nitrogen gas enters the upper part of the storage tank 1 to form certain pressure in the tank, so that the liquid nitrogen in the tank can be conveniently discharged. The evaporator 19 may be one of a coil natural air-cooled type or a coil forced air-cooled type.
The inlet of the ultra-low temperature liquid pump 17 is connected with the ultra-low temperature pump valve 16, and the outlet is connected with the flow dividing valve 21 and the pump emptying valve 31 through the heat insulation pipe 20. The heat insulation pipe 20 should be a flexible pipe at the bending or moving part, and the flexible pipe can be one of a low temperature resistant soft fiber pipe or a low temperature resistant metal corrugated pipe; the number of the diverter valves 21 is determined according to the number of the nozzles 22 arranged in the protection area, and the nozzles 22 are one or more of a straight-flow type, a flow dispersing type, a spraying type and a rotating type; the ultra-low temperature liquid pump 17 must achieve the following technical specifications:
temperature of the medium: -196 ℃ C
Inlet pressure: 0.2 to 0.65MPa
Outlet pressure: 1.0 to 1.45MPa
Yang Cheng H80 m
The precooling time of the system is less than or equal to 15 seconds
The electric self-control valve group comprises an evaporator valve 18, an ultra-low temperature pump valve 16, a pump emptying valve 31 and a flow dividing valve 21, and the valves are all controlled by a fire extinguishing control panel 27.
The control system comprises a temperature-sensitive detector 23, a smoke-sensitive detector 24, a gas detector 25, an alarm 26, a CRT display system 28, a linkage controller 29 and a fire-extinguishing control panel 27. The signal receiving device of the linkage controller 29 is electrically connected with the temperature-sensitive detector 23, the smoke-sensitive detector 24, the gas detector 25 and the alarm 26, the control output circuit of the linkage controller 29 is connected with the fire-extinguishing control panel 27, and the fire-extinguishing control panel 27 controls the related electric automatic control valve and the motor of the ultralow-temperature liquid pump 17 through circuits.
The use method of the invention comprises the following steps:
before liquid nitrogen is filled for the first time, the heat insulating layer 102 and the liquid argon layer 104 are ensured to be in a vacuum state, the safety valve 12, the liquid level meter valve, the pressure gauge valve and the tank emptying valve 13 are in an open state, and the evaporator valve 18, the liquid filling valve 15, the purification valve 30, the ultralow temperature pump valve 16, the flow dividing valve 21 and the pump emptying valve 31 are all in a closed state. Then a small amount of nitrogen is filled into the tank, impurities in the tank are washed, the purge valve 30 is released, the nitrogen and the impurities in the tank are discharged, and then the purge valve 30 is closed.
In the liquid nitrogen filling process, a liquid filling pipeline is connected with a liquid filling valve 15, then the liquid filling valve 15 is opened for filling, in the filling process, attention is paid to observing a liquid level meter 14, when the liquid filling valve 15 is full, the liquid filling valve 15 is closed in time, then a tank emptying valve 13 is closed, the liquid nitrogen filling pipeline is detached, and filling is finished.
In the explosion-proof fire extinguishing process, when the temperature detector 23, the smoke detector 24 and the gas detector 25 in a protection area (BHQ) sense and reach set values, the alarm 26 gives an alarm and transmits information to the linkage controller 29, a control output circuit of the linkage controller 29 is connected with a fire extinguishing control panel 27, the fire extinguishing control panel 27 controls a related electric automatic control valve and a motor of the ultralow temperature liquid pump 16 through circuits, liquid nitrogen is sprayed to a fire point from a nozzle, the liquid nitrogen is vaporized to rapidly reduce the temperature of a fire field and the oxygen content in air, so that the fire is extinguished, and meanwhile, a CRT display system 28 displays and records data.
When the liquid level meter 14 shows that the liquid nitrogen in the tank is insufficient, the evaporator valve 18 and the ultralow temperature liquid pump 16 are closed, and the fire extinguishing is finished.
It should be noted that this embodiment is one of the preferred embodiments of the present invention, and all simple modifications made according to this embodiment are within the scope of the present invention.
Claims (4)
1. A fire-extinguishing explosion-proof equipment using liquid nitrogen as fire extinguishing agent is composed of a storage tank (1), an evaporator (19), an ultralow temperature liquid pump (17), an electric automatic control valve group, a heat insulation pipe (20), a nozzle (22) and a control system,
the storage tank (1) is a cylindrical storage tank (1) and is provided with an arched end socket, the wall of the storage tank (1) is divided into three layers and is formed by a stainless steel welding machine, a heat insulating layer (102) is filled between an outer layer wall (101) and a middle layer liner (103) after vacuumizing, the heat insulating layer (102) is made of foamed polyurethane or perlite, a liquid argon layer (104) is filled between the middle layer liner (103) and an inner layer liner (105) after vacuumizing; a pressure gauge (11), a liquid level gauge (14), a safety valve (12) and a tank emptying valve (13) are assembled on the storage tank (1), and an evaporator valve (18), a liquid filling valve (15), a purification valve (30) and an ultralow temperature pump valve (16) are arranged at the lower part of the storage tank (1);
the inlet of the evaporator (19) is connected with the evaporator valve (18), and the outlet is connected to the upper part of the storage tank (1) through a pipeline;
the inlet of the ultra-low temperature liquid pump (17) is connected with the ultra-low temperature pump valve (16), the outlet is connected with the flow divider valve (21) and the pump emptying valve (31) through the heat insulation pipe (20), and the ultra-low temperature liquid pump (17) must achieve the following technical indexes:
temperature of the medium: -196 ℃ C
Inlet pressure: 0.2 to 0.65MPa
Outlet pressure: 1.0 to 1.45MPa
Yang Cheng H80 m
The precooling time of the system is less than or equal to 15 seconds
The electric automatic control valve group comprises an evaporator valve (18), an ultralow temperature pump valve (16), a pump emptying valve (31) and a flow dividing valve (21), and the valves are all controlled by a fire extinguishing control panel (27);
control system include temperature-sensitive detector (23), smoke detector (24), gas detector (25), alarm (26), CRT display system (28), coordinated control ware (29), control panel (27) put out a fire, coordinated control ware (29) signal reception device and temperature-sensitive detector (23), smoke detector (24), gas detector (25) and alarm (26) circuit connection, the control output circuit and the control panel (27) circuit connection that put out a fire of coordinated control ware (29), control panel (27) put out a fire are through circuit control evaporimeter valve (18), ultra-low temperature pump valve (16), pump atmospheric valve (31), the motor of flow divider (21) and ultra-low temperature liquid pump (17).
2. A fire and explosion suppression apparatus using liquid nitrogen as a fire extinguishing agent according to claim 1, wherein the evaporator (19) is one of a coil natural air cooling type and a coil forced air cooling type.
3. A fire extinguishing and explosion preventing device using liquid nitrogen as fire extinguishing agent according to claim 1, wherein the heat insulating pipe (20) is a flexible pipe at the bending or moving part, and the flexible pipe can be one of a soft fiber pipe with low temperature resistance or a metal corrugated pipe with low temperature resistance.
4. A fire extinguishing and explosion preventing device using liquid nitrogen as fire extinguishing agent according to claim 1, characterized in that the nozzles (22) are one or more of straight flow type, dispersion flow type, spray type and rotary type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110492752.4A CN113058187A (en) | 2021-04-27 | 2021-04-27 | Fire extinguishing explosion-proof equipment using liquid nitrogen as fire extinguishing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110492752.4A CN113058187A (en) | 2021-04-27 | 2021-04-27 | Fire extinguishing explosion-proof equipment using liquid nitrogen as fire extinguishing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113058187A true CN113058187A (en) | 2021-07-02 |
Family
ID=76568255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110492752.4A Pending CN113058187A (en) | 2021-04-27 | 2021-04-27 | Fire extinguishing explosion-proof equipment using liquid nitrogen as fire extinguishing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113058187A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114949675A (en) * | 2022-05-24 | 2022-08-30 | 上海华慧检测技术有限公司 | System and method for early warning and controlling thermal runaway of energy storage system |
-
2021
- 2021-04-27 CN CN202110492752.4A patent/CN113058187A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114949675A (en) * | 2022-05-24 | 2022-08-30 | 上海华慧检测技术有限公司 | System and method for early warning and controlling thermal runaway of energy storage system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106110537A (en) | A kind of extinguishing by cooling device for storage lithium ion battery thermal runaway and extinguishing method | |
| CN101985328B (en) | Active safeguard system and method for floating-roof oil tank | |
| US20060283977A1 (en) | Novel cryogenic firefighting and hazardous materials suppression apparatus | |
| CN106640177B (en) | Mining mobile liquid carbon dioxide fire extinguishing system | |
| CN215275535U (en) | Fire extinguishing explosion-proof equipment using liquid nitrogen as fire extinguishing agent | |
| CN206368716U (en) | mining mobile liquid carbon dioxide fire extinguishing system | |
| CN102417081A (en) | External floating roof petroleum storage tank water mist safe protection system and protection method | |
| CN113058187A (en) | Fire extinguishing explosion-proof equipment using liquid nitrogen as fire extinguishing agent | |
| CN109999394A (en) | A kind of nitrogen automatic fire prevention fire extinguishing system | |
| CN201808849U (en) | Active safety protection system of external floating roof type petroleum storage tank | |
| CN105477806A (en) | Ground-source CO2 storage fire extinguishing system and high rack warehouse with same | |
| CN208689036U (en) | The mobile liquid carbon dioxide fire-fighting experimental provision of Petroleum Storage Tank | |
| CN112717304A (en) | Cable pit liquid nitrogen vehicle system of putting out a fire | |
| WO2015181575A1 (en) | Installed fire fighting apparatus for flammable objects | |
| CN211434846U (en) | Transformer comprehensive fire prevention and control system | |
| CN1239214C (en) | Fire extinguishing apparatus using liquid nitrogen as fire extinguishing agent | |
| CN209347970U (en) | A kind of Urban Underground pipe gallery system carrying out safeguard protection using nitrogen | |
| CN108635714B (en) | Deep underground fire-fighting system | |
| CN213900703U (en) | Liquid nitrogen storage tank | |
| CN201802437U (en) | Movable type liquid carbon dioxide fire preventing and extinguishing device for mine | |
| CN2550002Y (en) | Fixed fire extinguisher | |
| CN108443708B (en) | Liquid ammonia security control method | |
| CN109954241A (en) | A kind of device and method with carbon dioxide Extinguish The Fire On Oil | |
| CN215537988U (en) | Fire-fighting and fire-extinguishing vehicle using liquid nitrogen as fire extinguishing agent | |
| CN210145345U (en) | Anti-fire integrated oil tank safety equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |