WO2000029067A1

WO2000029067A1 - Low temperature no-oxygen air forest fire fighting extinguisher

Info

Publication number: WO2000029067A1
Application number: PCT/CN1999/000187
Authority: WO
Inventors: Yuan-Ming Yi
Original assignee: Yi Yuan Ming
Priority date: 1998-11-12
Filing date: 1999-11-12
Publication date: 2000-05-25
Also published as: CN1223155A; AU1147100A; CN1099898C

Abstract

The invention relates to a low temperature no-oxygen air forest fire fighting extinguisher. It takes advantage of simple phase transition no-heat refrigerating plant to high efficiently make coolant and at the spot of forest fires, condenses liquefied no-oxygen air, simultaneously utilizes energy of difference in temperature between the artificial low temperature coolant and high temperature fume to produce mechanical power, provides aviation power, drive no-oxygen airs in the forest fire field to phase transit and heat circulate, and provides a great lot high pressure low temperature no-oxygen airs to form a veil of no-oxygen airs to put out the fire. The invention provides a forest fire fighting extinguisher, which has a low cost and safe reliability, can extinguish forest fire of any scale, effectively avoids vast economic loss and serious environmental pollution resulted from the forest fire.

Description

Low temperature anaerobic air forest fire extinguisher

Field of invention

The present invention relates to a fire extinguisher, and in particular to a fire extinguisher using low-temperature oxygen-free air to eliminate forest fires. Description of the prior art

At present, there is no effective forest fire extinguishing machine for forest fire prevention. Whether it is in the developing countries to use human-powered methods to extinguish fires or in developed industrial countries to use air spraying with water and carbon dioxide and other fire extinguishing agents, they are all in vain, and they do not help. As a result, global forest fires occur from time to time. The losses were very heavy. Object of the invention

The purpose of the present invention is to provide a new low-temperature oxygen-free air forest fire extinguisher, which adopts pure phase-change athermal refrigeration technology, and uses a pure phase-change athermal refrigeration device to obtain low-temperature cryogenic cooling capacity at a high efficiency in the forest. The fire site condenses liquefied oxygen-free smoke, and at the same time uses the energy of the temperature difference between the artificial low-temperature environment and the high-temperature fireworks to generate power, and sprays high-pressure low-temperature oxygen-free air to the forest fire site to extinguish the fire. Brief description of the invention

The technical solution of the present invention is as follows:

A low-temperature oxygen-free air forest fire extinguisher. Its basic components are similar to that of a water-heating steam engine. A multi-stage refrigeration cycle using pure phase-change athermal refrigeration technology includes a refrigeration compressor, a condenser, A first-stage vapor compression refrigeration cycle device consisting of a throttle and an evaporator that provides the original cooling capacity, a subcooled liquid working fluid condensing plate, a second-stage liquid refrigeration working fluid, and a first holding pressure that includes all of the above components A container, together with a working medium pump; including an intermediate N-level heat preservation pressure vessel equipped with an intermediate-stage refrigeration evaporator, a subcooled liquid working medium condensing plate, and a liquid refrigerant working medium, together with a working medium pump;

Replacement page (Article 26) It also includes a terminal heat-preserving pressure vessel equipped with an intermediate N-stage refrigeration evaporator and a subcooled liquid working fluid condensing plate. A heat exchanger and a high-pressure working fluid pump are installed at the lower part of the heat-preserving pressure vessel at the end. The lower part is filled with liquid oxygen-free air, so that the heat exchanger is immersed in the liquid oxygen-free air. The refrigerant in the final phase change refrigeration cycle is liquid oxygen-free air, and each of the first phase change refrigeration cycle to the last phase change refrigeration cycle The evaporation temperature of the first-stage refrigerant is gradually increased in accordance with the rank order, and the first-stage refrigerant is the lowest;

The main body of the shape of the fire extinguisher is a large container with a concave hemispherical shell at the bottom. The large container is made of a pressure-resistant and heat-conductive metal plate, and its interior is divided into more than one layer of ring-shaped isolation space. Insulated pressure vessels, an intermediate N-level insulated pressure vessel is set in the outer space of the first insulated pressure vessel, a terminal insulated pressure vessel is placed in the space below the intermediate N-rated insulated pressure vessel, and a liquid anaerobic is set in the inner space of the terminal insulated pressure vessel. The air high-pressure liquid storage tank; the above part is the auxiliary device of the fire extinguisher, and each component of the auxiliary device is connected by a connecting pipe; the invention also includes a main engine device, and the main device and the auxiliary device are connected by an infusion pipe and an air pipe;

The main device of the fire extinguisher includes a heat exchange cavity composed of a structural round shell and a heat insulation layer. An evaporator installed in the heat exchange cavity and absorbing and vaporizing liquid oxygen-free air into high-pressure oxygen-free air is arranged above the evaporator. Turbine fan blades that pass through the center of a large container and are vertically arranged shafts, turbine expanders and generators that make high-pressure oxygen-free air turbines work, horizontal aviation propellers that provide aviation thrust for fire extinguishers And high-pressure oxygen-free air nozzles that spray low-temperature and high-pressure oxygen-free air to forest fires; high-pressure oxygen-free air nozzles are set on the inner hemispherical shell-like bottom plate of large containers to allow high-heat and high-density oxygen-free compressed air and deep cold The heat exchange chamber for liquid oxygen-free air for heat exchange is suspended at the center of the concave hemispherical shell space below the large container. The turbine fan blades located in the heat exchange chamber are installed at the lower end of the shaft, and the turbo expander is set up. At the upper end of the shaft, which is above the center of the large container, the axial thrust on the bearing surface of the turboexpander impeller faces the direction of the sky, and the turboexpander and the vortex Wheel fan blades are installed coaxially, a generator is installed coaxially above the turboexpander, and a horizontal aviation propeller is installed coaxially above the generator;

The main device of the fire extinguisher is provided with a gas switching valve and a liquid switching valve. The gas switching valve is connected to a high-pressure oxygen-free air moving nozzle through a first high-pressure gas pipe, and the gas switching valve is also connected to a second high-pressure gas pipe. The air pipe is connected to the turbo expander, and the third high-pressure gas pipe connects the gas transfer valve with liquid oxygen-free air The low-temperature oxygen-free air layer in the high-pressure storage tank is connected; the infusion switching valve is connected to the high-pressure working fluid pump located at the lower end of the end-insulation pressure vessel through a first high-pressure infusion tube, and the infusion switching valve is also connected to the second high-pressure infusion tube through The evaporator in the heat exchange chamber is connected, and the three-way high-pressure infusion pipe is connected to the liquid oxygen-free air high-pressure storage gun;

The heat exchange chamber on the main device of the fire extinguisher is connected to the heat exchanger in the terminal heat insulation pressure vessel in the auxiliary device of the fire extinguisher through a gas pipe, and the exhaust pipe of the turbo expander on the main device is connected to the The condensing space in the terminal insulated pressure vessel communicates;

The evaporator and the turbine expander condense the low-temperature oxygen-free air into the liquid oxygen-free air at the end of the heat-preserving condensing space in the pressure vessel, and the liquid oxygen-free air re-enters the high-pressure working medium pump of the evaporator, thereby forming heat. Steam is used for work cycle; the above-mentioned turbine fan blades, heat exchange cavity, heat exchanger that quickly compresses the compressed oxygen-free air in liquid oxygen-free air again, so that the low-temperature oxygen-free air finally condenses into a liquid oxygen-free air condensing space. Oxygen-free air high-pressure liquid storage tank, high-pressure working fluid pump, final-stage refrigeration evaporator, and movable nozzle that sprays high-pressure oxygen-free air to natural space, thereby forming a phase change thermal cycle of oxygen-free air flow at the forest fire site; The rings form the same thermal cycle, and the external cooling capacity is used to consume the heat in the hot flue gas, and the thermal steam is used as a functional quantity to generate mechanical power and generate electricity;

The phase change thermal cycle of the anaerobic air flow at the forest fire scene, and another final phase change in the pure phase change athermal refrigeration constitute the same phase change thermal cycle with a cold refrigeration cycle, and its external cooling capacity is used for Consumption of heat in high-heat smoke to provide a large amount of high-pressure low-temperature oxygen-free air for forest fire extinguishing. The present invention is composed of a fire extinguisher auxiliary device and a fire extinguisher main device. It adopts pure phase change athermal refrigeration technology and implements multi-stage phase change for cold refrigeration Circulation, take out a large amount of low-temperature cryogenic cooling capacity with high cooling efficiency, and repeatedly use the above-mentioned cooling capacity to cool and liquefy a large amount of forest smoke, reuse the oxygen-free air at the forest fire scene to extinguish the forest fire, and form The oxygen air curtain wall is used to extinguish the forest field and the fire, and at the same time, the energy of the temperature difference between the artificially-made low-temperature cooling capacity and the heat of the forest fire field is used to provide mechanical power for the entire device, implement local materials, extinguish the fire with fire, and completely extinguish it. Fire source. The present invention is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

The drawing is a schematic structural diagram of a low-temperature oxygen-free air forest fire extinguisher. Description of the embodiments

Referring to the drawings, the main body of the fire extinguisher is a large container with a concave hemispherical shell at the bottom. The upper part of the central space in the large container is the driver's grab 1 and the operator's cockpit 1 with a driver's door 13. A first heat-preserving pressure vessel 2 is provided in the center space in the large container. A refrigeration compressor 23, a condenser 24, a restrictor 35, and an evaporator 25 are installed in the first heat-preserving pressure vessel 2 to form a first-stage vapor compression refrigeration cycle to provide the original cooling capacity. A liquid refrigerant working medium 19 is injected into the bottom of the first heat-preserving pressure vessel 2, and the refrigeration compressor 23 and the condenser 24 in the first-stage vapor compression refrigeration cycle are immersed in the liquid refrigerant working medium 19. A supercooled liquid working medium condensing plate 17 is installed in the middle of the first heat-preserving pressure vessel 2, and a secondary working medium pump 31 is installed in the bottom liquid working medium 19.

An intermediate N-level heat preservation pressure vessel 4 is arranged in the outer space of the first heat preservation pressure vessel 2 in the large vessel. An intermediate-stage refrigerating evaporator 26 is installed in the upper part of the middle N-stage heat-preserving pressure vessel, a supercooled liquid working medium condensing plate 17 is installed in the middle, and a liquid-refrigerating working medium 20 is filled in the bottom, and a working-stage pump 22 in the next stage is installed. The working medium pump 31 sucks the liquid refrigerant working medium 19 from the bottom of the first heat-preserving pressure vessel 2 through the liquid suction pipe, and enters the intermediate-stage refrigeration evaporator 26 through the working medium infusion pipe 38. The liquid refrigerant working medium 19 absorbs heat from the vapour-refrigerating working medium vapor in the next-stage refrigeration cycle and evaporates to form a vapor through the evaporator 26, and returns to the first insulation pressure window to condense and liquefy through the heat insulation return pipe 45, thereby A phase change is formed to cool the refrigeration cycle.

A terminal heat-retaining pressure vessel 5 is provided in a space below the middle N-stage heat-retaining pressure vessel 4 in a large vessel. An intermediate N-stage refrigerating evaporator 27 is installed in the upper part of the terminal heat-preserving pressure vessel 5, a subcooled liquid working medium condensing plate 17 is installed in the middle, and a final-stage liquid refrigerating shield, that is, liquid oxygen-free air 21 is filled in the lower part. A heat exchanger 29 is provided on the upper layer of the liquid oxygen-free air 21, and a high-pressure working medium pump 30 is installed on the lower layer. The working fluid pump 22 sucks the liquid refrigerating working fluid 20 from the intermediate N-level heat-preserving pressure vessel 4. Via the infusion pipe 39, an intermediate N-stage refrigeration evaporator, and absorbs heat from the low-temperature oxygen-free air to vaporize, and condense and liquefy the condensing space in the intermediate N-stage thermal insulation pressure vessel 4 through the heat preservation return pipe 40, thereby forming a phase change. Cold refrigeration cycle.

A first liquid oxygen-free air high-pressure storage tank 6 is provided in the inner space of the large-scale container end-insulation pressure vessel 5, and the first high-pressure liquid storage tank 6 is provided with liquid oxygen-free air 21. In the large container, a second liquid oxygen-free air high-pressure liquid storage tank 舦 7 is installed in the space below the end heat-insulating pressure vessel 5, and the second high-pressure liquid storage tank 7 is also provided with liquid oxygen-free air 21.

The above part is the auxiliary device of the fire extinguisher, in which each part is connected by a connecting pipe

The main device of the fire extinguisher includes a heat exchange cavity 44 composed of a structural round shell 8 and a heat insulation layer. An evaporator 28 is installed in the heat exchange cavity 44 to absorb and vaporize liquid oxygen-free air into high-pressure oxygen-free air. The turbine fan blades 14 arranged on 28 pass through the center of the large container and the shaft 10 is arranged vertically to make the high-pressure oxygen-free air turbine work as a turbine expander 12 and a generator 11 to provide aviation thrust for the fire extinguisher And a high-pressure oxygen-free air nozzle 15 for spraying low-temperature and high-pressure oxygen-free air toward a forest fire. The high-pressure oxygen-free air nozzle 15 is arranged on the concave hemispherical shell-shaped bottom plate of a large container, and may be arranged on the lower edge of the bottom plate periphery or at any position on the periphery of the bottom plate. The heat exchange cavity 44 is suspended at the center of the concave hemispherical shell-shaped space 3 below the large container. The turbine fan blades 14 in the heat exchange cavity 44 are installed at the lower end of the shaft 10, and the turbine expander 12 is provided at the shaft. The upper end of 10 is above the center of the large container. The axial thrust force received by the impeller receiving surface of the turbine expander 12 is directed upward. The turbine expander 12 is installed coaxially with the turbine fan blades. A motor 11 is installed coaxially above the turbine expander 12 and a horizontal aerospace propeller 9 is installed coaxially above the generator 11. The turbine fan blade 14 sucks in and compresses the oxygen-free air flow from the concave hemispherical shell-shaped space 3, and the heat exchange cavity 44 allows heat exchange between the high-temperature and high-density oxygen-free compressed air and the cryogenic liquid oxygen-free air in the evaporator 28.

The main device of the fire extinguisher is equipped with a gas transfer valve 18 and a fluid transfer valve 16. The gas transfer valve 18 is connected to the high-pressure oxygen-free air movable nozzle 15 through a first high-pressure gas pipe 43, and the gas transfer valve 18 is also passed The second high-pressure gas pipe 37 is connected to the turbine expander 12, and the third high-pressure gas pipe 33 connects the gas transfer valve 18 to the high-pressure low-temperature oxygen-free air layer in the first liquid oxygen-free air high-pressure storage tank 6.

The infusion reversing valve 16 passes through the first high-pressure infusion tube 42 and is located in the terminal heat-preserving pressure vessel 5 The lower high-pressure working fluid pump 30 is connected. The infusion switching valve 16 is also connected to the evaporator 28 in the heat exchange chamber 44 through a second high-pressure infusion pipe 32, and is connected to the first and second infusion pipes by a three-way high-pressure infusion pipe 36. Liquid oxygen-free air high-pressure liquid storage layer 6, 7 liquid oxygen-free air layer.

The heat exchange chamber 44 on the main unit of the fire extinguisher is connected to the heat exchanger 29 in the terminal heat insulation pressure vessel 5 in the auxiliary unit of the fire extinguisher through the gas pipe 34, and the exhaust pipe 41 of the turbine expander 12 on the main unit is connected with The condensing space in the terminal insulated pressure vessel 5 in the auxiliary device is communicated.

The high-pressure working fluid pump 30 sucks the liquid oxygen-free air 21 from the lower part of the end-insulation pressure vessel 5 and passes through the first high-pressure infusion pipe 42, the infusion switching valve 16, and the second high-pressure infusion pipe 32, and enters the heat exchange chamber 44 for evaporation. The heater 28, the liquid oxygen-free air 21 passes through the evaporator 28 and passes through the heat exchange cavity 44 and is compressed by the high-temperature and high-density oxygen-free air that is strongly compressed by the turbine fan blades 14, and is vaporized into high-pressure oxygen-free air that can be used for work. The turbine enters the turbine expander 12 through the second high-pressure gas pipe 37 to work, and drives the turbine expander 12 to operate and power the generator 11, the horizontal aviation propeller 9, and the turbine fan blade 14 mounted on the same shaft 10. The generator 11 provides normal working and running power to the refrigeration compressor 1, the working fluid pump 31, the working fluid pump 22, and the high pressure working fluid pump 30. After the high-pressure oxygen-free air turbine is cooled and decompressed, the exhaust gas is introduced into the end by the exhaust pipe 41 The condensing space in the heat-preserving pressure vessel 5 condenses and liquefies, thereby forming a final-stage phase change using a cold refrigeration cycle and a thermal steam as a work cycle.

The phase change thermal cycle of the anaerobic air flow at the scene of the forest fire, and the other final phase change in the pure phase change athermal refrigeration and the cold refrigeration cycle also constitute the same phase change thermal cycle. In this cycle, the high-pressure working fluid pump 30, the first and second liquid oxygen-free air high-pressure liquid storage tanks 6, 7, the high-pressure oxygen-free air movable nozzle 15, the turbine fan blades 14, the heat exchanger 29, and the terminal insulation pressure vessel 5 It consists of a condensing space inside and liquid oxygen-free air 21. The oxygen-free high-heat flue gas stream is collected by the concave hemispherical shell-shaped space 3 below the large container, and is strongly compressed by the turbine fan blades 14 and enters the heat exchange cavity 44 and the final stage cooling in the evaporator 28 in the heat exchange cavity 44 The working medium, ie, the cryogenic liquid oxygen-free air 21, is cooled to a low-temperature compressed air after a large temperature difference between cold and heat, and then enters the heat exchanger 29 in the end heat-retaining pressure vessel 5 through the gas pipe 34, because the heat exchanger 29 is soaked In the low-temperature and low-pressure liquid oxygen-free air 21, the oxygen-free air flow in the heat exchanger 29 is once again strongly cooled, and then enters the condensing space in the terminal insulation pressure vessel 5 to condense and liquefy, and then passes through the first high-pressure working medium pump 30 to pass through the first The high-pressure infusion pipe 42 and the infusion switching valve 16 enter the first and second liquid oxygen-free air high-pressure storage tanks 6, 7, Because the metal structural plate of the high-pressure liquid storage tank is thermally connected to the metal plate of the shell structure of the entire device, it absorbs heat from the environment from the outside and the hot flue gas stream, so that the liquid oxygen-free air in the high-pressure liquid storage is continuously sucked. The heat is vaporized into low-temperature and high-pressure oxygen-free air. The low-temperature and high-pressure oxygen-free air is introduced into the high-pressure oxygen-free air moving nozzle 15 through the third high-pressure gas pipe 33, the gas switching valve 18, and the first high-pressure gas pipe 43. The air sprayed into the forest fire field, thereby forming an anaerobic air flow phase change thermal cycle at the forest fire site and another final stage phase change in a cold refrigeration cycle.

The liquid oxygen-free air 21 in the high-pressure liquid storage tanks 6, 7 of the first and second liquid oxygen-free air is formed by absorbing heat from the device casing to the outside and vaporizing to form low-temperature and high-pressure oxygen-free air. 33. The gas transfer valve 18 and the second high-pressure gas pipe 37 enter the turbine expander 12 to perform work. After the turbine, its exhaust gas is returned to the condensing space in the final-stage insulated pressure vessel 5 through the exhaust pipe 41 to re-condensate and liquefy. To form a thermal steam work cycle.

The high-pressure low-temperature oxygen-free air sprayed to the forest fire can be formed by conical anaerobic air through a high-pressure oxygen-free air moving nozzle 15 evenly distributed around the concave hemispherical shell-shaped bottom plate of a large container. The curtain wall covers the forest fire field from the air, and the oxygen-free hot flue gas in the space surrounded by the curtain wall is strongly extracted and recovered by the turbine fan blades 14 in the heat exchange cavity 44 and enters the phase-change thermal cycle of the oxygen-free air flow, thereby Multiple reuses to form anaerobic air.

The low-temperature oxygen-free air forest fire extinguisher according to the present invention stays above the forest fire. Its aerodynamic power is the thrust when the turbine fan blades 14 compress the oxygen-free air, and the axial thrust when the turbine expander 12 works. The reverse thrust when the nozzle 15 ejects air is composed of the thrust generated by the turbine expander 12 to drive the horizontal aviation propeller 9 when necessary. It can enable the fire extinguisher to overcome its own gravity and stay in any position above the forest fire for a long time. At the same time, it can rely on the movable nozzle 15 to horizontally spray high-pressure anaerobic air to generate horizontal reverse thrust, and perform short-range horizontal displacement. When a forest fire alarm is found, the low-temperature oxygen-free air forest fire extinguisher can be quickly transported to the vicinity of the fire site by helicopter or land transportation vehicle and put into operation.

The working process of the fire extinguisher according to the present invention is as follows:

The refrigeration compressor 23 is started to cool, and its heat is consumed by the latent heat of vaporization of the liquid refrigerant working medium 19. The liquid refrigerant working medium 19 consumes the heat generated by the refrigeration compressor 23 and the heat discharged from the condenser 24, and the steam is generated in the first heat preservation pressure vessel. Condensation and liquefaction in the condensing space of 2. Start the working medium pump 31, let the liquid refrigerant working medium 19 enter the intermediate-stage refrigeration evaporator 26, absorb heat and vaporize from the next-stage refrigerant working medium vapor, and return to the condensation in the first thermal insulation pressure vessel 2 through the thermal insulation return pipe 45 Space condensation and liquefaction.

Start the working medium pump 22, let the liquid refrigerant working medium 20 enter the intermediate N-stage refrigeration evaporator 27, and absorb heat and vaporize from the low-temperature oxygen-free air of the final stage refrigeration, and return to the intermediate N-stage thermal insulation pressure vessel 4 through the heat insulation return pipe 40 The condensing space within the condensate liquefies.

Start the high-pressure working fluid pump 30, and let the liquid oxygen-free air 21 enter the first and second liquid oxygen-free air high-pressure storage tanks 6, 7, and absorb heat from the large-sized empty container and vaporize it into low-temperature high-pressure oxygen-free air. The high-pressure gas pipe 33, the gas transfer valve 18, and the second high-pressure gas pipe 37 enter the turbine expander 12 as a power turbine, and drive the generator 11 and the turbine fan blade 14 to work normally, and let the generator 11 be a refrigeration compressor. 1. Working fluid pumps 31, 22, and high-pressure working fluid pumps 30 provide normal operating power. After the high-pressure oxygen-free air turbine passes the exhaust pipe 41, it returns to the condensing space of the end-insulation pressure vessel 5 again. Condensate H

The turbine expander 12 drives the turbine wind blade 14 to strongly compress the anaerobic air flow to generate high heat and high density compressed anaerobic air, and then adjusts the infusion reversing valve 16 to allow the high-pressure working fluid pump 30 to be pumped out of the thermal insulation pressure vessel 5 at the end. The liquid oxygen-free air 21 passes through the first high-pressure infusion pipe 42, the infusion switching valve 16, and the three-way infusion pipe 36, and enters the first and second liquid oxygen-free air high-pressure storage tanks 6, 7 while passing through the second infusion The tube 32 enters the evaporator 28 to be rapidly vaporized into high-pressure oxygen-free air, and the turboexpander 12 is driven to double the work through the second high-pressure gas pipe 37; at the same time, the gas transfer valve 18 is adjusted to cut off the second high-pressure gas pipe The connection of 37 allows the upper high-pressure low-temperature oxygen-free air in the liquid oxygen-free air high-pressure storage tank 6 to enter the movable nozzle 15 through the third high-pressure infusion pipe 33, the gas transfer valve 18, and the first high-pressure gas pipe 43. Oxygen-free, high-pressure, low-temperature air sprayed into the forest fire.

Start the horizontal aviation propeller 9 on the top of the fire extinguisher, let the fire extinguisher rise and fall vertically, adjust the jet direction of the active nozzle 15 to be horizontal, and make the fire extinguisher move horizontally over the forest fire.

The invention provides a low-cost, safe and reliable fire extinguisher for timely extinguishing forest fires of any scale, thereby effectively avoiding the huge material loss caused by forest fires and the harm caused by environmental pollution to human society.

Claims

Rights request

1. A low-temperature anaerobic air forest fire extinguisher, the basic components of which are similar to a thermal steam engine using water as the working medium. A multi-stage refrigeration cycle using pure phase change athermal refrigeration technology includes a refrigeration compressor, A first-stage vapor compression refrigeration cycle device consisting of a condenser, a restrictor, and an evaporator, which provides the original refrigeration capacity, a subcooled liquid working medium condensation plate, a second-stage liquid refrigerant working medium, and a first-stage liquid cooling medium. A thermal insulation pressure vessel, together with a working medium pump; including an intermediate N-level thermal insulation pressure vessel equipped with an intermediate cooling evaporator, a subcooled liquid working medium condensing plate, and a liquid cooling working medium, together with a working medium pump; It includes a terminal heat-preserving pressure vessel equipped with an intermediate N-stage refrigeration evaporator and a subcooled liquid working fluid condensing plate. Liquid oxygen-free air, so that the heat exchanger is immersed in liquid oxygen-free air, the refrigerant in the final phase change refrigeration cycle is liquid oxygen-free air, and the first-stage phase change refrigeration cycle Final phase in the refrigeration cycle refrigerant evaporation temperature levels, depending on the order in which orders increase, the lowest heads refrigerant evaporation temperature;

The main body of the shape of the fire extinguisher is a recessed hemispherical shell-shaped in-type container at the bottom. The large container is made of a pressure-resistant and heat-conductive metal plate, and the inside is divided into more than one layer of ring-shaped isolation space. The first heat-preserving pressure vessel is provided with an intermediate N-level heat-preserving pressure vessel in an outer space of the first heat-preserving pressure-vessel, a terminal heat-preserving pressure vessel is disposed under the middle N-stage heat-preserving pressure vessel, and a liquid inside the space An oxygen-free air high-pressure liquid storage tank; the above part is a fire extinguisher auxiliary device, and each component of the auxiliary device is connected through a connecting pipe; the invention also includes a main engine device, and the main device and the auxiliary device are connected through an infusion pipe and a gas pipe;

The main device of the fire extinguisher includes a heat exchange cavity composed of a structural round shell and a heat insulation layer. An evaporator installed in the heat exchange cavity and absorbing and vaporizing liquid oxygen-free air into high-pressure oxygen-free air is arranged above the evaporator. Turbine fan blades that pass through the center of a large container and are vertically arranged shafts, turbine expanders and generators that make high-pressure oxygen-free air turbines work, horizontal aviation propellers that provide aviation thrust for fire extinguishers And high-pressure oxygen-free air nozzles that spray low-temperature and high-pressure oxygen-free air to forest fires; high-pressure oxygen-free air nozzles are set on the concave hemispherical shell-like bottom plate of a large container to allow high-heat and high-density oxygen-free compressed air and deep Heat exchange in cold liquid oxygen-free air

Replace 5 ( ^_Article ²⁶ ) The cavity is suspended at the center of the concave hemispherical shell-shaped space below the large container. The turbine fan blades located in the heat exchange cavity are installed at the lower end of the shaft. The turboexpander is located at the upper end of the shaft, which is the center of the large container. Above, the axial thrust on the bearing surface of the turbine expander impeller faces upward, the turbine expander and the turbine fan blades are installed coaxially, and the generator is installed coaxially above the turbine expander. A horizontal aviation propeller is coaxially installed at the upper position;

The main device of the fire extinguisher is provided with a gas switching valve and a liquid switching valve. The gas switching valve is connected to a high-pressure oxygen-free air moving nozzle through a first high-pressure gas pipe, and the gas switching valve is also connected to a second high-pressure pipe. The gas pipe is connected to the turbo expander, and the third high-pressure gas pipe connects the gas transfer valve to the low-temperature oxygen-free air layer in the liquid oxygen-free air high-pressure storage tank; the liquid transfer valve is connected to the The high-pressure working fluid pump at the lower end of the heat-preserving pressure vessel at the end is connected. The infusion switching direction is also connected to the evaporator in the heat exchange chamber through a second high-pressure infusion pipe, and the three-way high-pressure infusion pipe is connected to the high-pressure liquid storage of liquid oxygen-free air. Cabin

The evaporator and the turbine expander condense the low-temperature oxygen-free air into liquid oxygen-free air at the end of the thermal insulation pressure vessel, and the high-pressure working medium pump that re-enters the liquid oxygen-free air into the evaporator, thereby forming heat Steam is used for work cycle; the above-mentioned turbine fan blades, heat exchange cavity, heat exchanger that quickly compresses the compressed oxygen-free air in liquid oxygen-free air again, so that the low-temperature oxygen-free air finally condenses into a liquid oxygen-free air condensing space. Oxygen-free air high-pressure liquid storage tank, high-pressure working fluid pump, final-stage refrigeration evaporator, and movable nozzle that sprays high-pressure oxygen-free air to natural space, thereby forming a phase change thermal cycle of oxygen-free air flow at the forest fire site; Forms the same thermal cycle, its external cooling capacity is used to consume the heat in the hot flue gas, and its thermal steam is used as a functional quantity to generate mechanical power and generate electricity;

The phase change thermal cycle of the oxygen-free air flow at the forest fire scene, and another final phase change in the pure phase change athermal refrigeration constitute the same phase change thermal cycle with a refrigeration cycle, and its external cooling capacity is used to consume The heat in the high-temperature smoke provides a large amount of high-pressure low-temperature oxygen-free air for forest fire fighting.