43results about How to "Large gas storage capacity" patented technology

The invention provides a method for preparing gas hydrate accelerant, which takes a high pressure gas cylinder as gas source; the high pressure gas cylinder is regulated to have proper pressure by a pressure regulating valve, and the consumed natural gas is calculated by a mass flowmeter; the temperature and the pressure in a reactor are monitored by a pressure and temperature transmitter; thermostatic waterbath is used for controlling the temperature of the liquid in a trough, thus regulating the temperature in the reactor; a data acquisition system and a computer are used for collecting data, and an opto-electrical lens is used for monitoring the forming situation of hydrate in the reactor. The composite accelerant is low in cost and little in dosage, ensures the generating condition of the hydrate to be reduced, the time to be shortened and the gas storage quantity to be increased, and effectively improves the economic benefit of the production of the hydrate.

The invention relates to the technical field of energy materials, and discloses a hydrate accelerator and an application thereof in preparing a high-gas-storage-density gas hydrate. The accelerant comprises amino acid and water, and is prepared by well mixing 100 parts by mass of water and 0.05-5 parts by mass of amino acid. The application comprises the specific steps that 100 parts by mass of water and 0.05-5 parts by mass of amino acid are well mixed, such that an accelerant water solution is obtained; the accelerant water solution is placed in an autoclave; high-pressure gas is delivered in under a low temperature; and a reaction is allowed for a period of time, such that the high-gas-storage-density solid gas hydrate is obtained. The accelerant provided by the invention is green and environment-friendly. With the accelerant, hydration induction time can be reduced, gas storage capacity can be increased, and gas storage density can be improved. The accelerant provided by the invention also has the advantages of low price, low dosage, and wide source. The accelerant is recyclable, and has no special requirement on temperature and pressure conditions. The method for preparing the high-gas-storage-density gas hydrate is fast, highly efficient, simple, and easy to realize.

The invention relates to a carbon dioxide laser with new structure. Sealing and connecting metal structures at two sides can adjust the angle of a lens (1) and a lens (12); the major structure of the laser pipe shaft comprises a glass material discharge tube (20), a jacket pipe (19), an air-storing pipe (18), an air-returning pipe (17), a water inlet (16) and a water outlet (6); a resonant cavityis composed of a total reflective mirror (1) and an output mirror (23); an angle adjusting system for the total reflective mirror comprises a fixed flange (5), an adjustable flange (3), a soft metal gasket (13) and an adjusting screw (2); the metal structure of the angle adjusting system is sealed and connected with the glass structure of the laser pipe shaft by spacer flange chips (14)(9); a high pressure protective sleeve (24) plays a role in protecting the laser metal structure part with a high pressure; an output mirror protective sleeve (23) plays a role in protecting the output mirror (12) and releasing heat. The carbon dioxide laser is mainly applicable to the laser cutting and the carving machine tool with medium and small power and material processing.

The invention relates to a method for preparing a composite hydrate accelerant. The composite accelerant is characterized by being prepared by mixing cyclopentane or methyl cyclohexane serving as a kinetic accelerant and 2-butyl octyl sodium sulfate serving as a surfactant, wherein the percentage by mass of the cyclopentane or methyl cyclohexane in a solvent is 1.3 to 15.0, and the concentration of the surfactant 2-butyl octyl sodium sulfate in the solvent is 0.32*10<-3> to 9.5*10<-3> mol / L; and 0.02 to 0.78 mass percent of sodium chloride is added into the mixture. In the method, a high-pressure gas cylinder is taken as a gas source, a pressure is properly adjusted through a pressure adjustment valve, consumed gas is metered by a mass flow meter, a temperature and the pressure in a reactor are monitored by pressure and temperature transducers, and the temperature of liquid in a water tank is controlled by means of a thermostatic water bath, so that the temperature in the reactor is adjusted; and data is acquired by a data acquisition system and a computer, and the forming condition of a hydrate in the reactor is monitored by a photoelectric lens. The method for preparing the composite hydrate accelerant not only can reduce the forming condition of the hydrate, but also can shorten the formation time of the hydrate and improve the gas storage capacity of the hydrate.

The invention belongs to the technical field of production promotion and utilization of gas hydrates, and particularly relates to a hydrate promoter and a preparation method thereof. The hydrate promoter is prepared by mixing cocamidopropyl betaine, dimethyl siloxane and a nonionic fluorinated surfactant which are used as additives with deionized water at the temperature ranging from 65 DEG C to 85 DEG C for 30-40 min; the solvent comprises, in percentage by mass, 3-7% of the cocamidopropyl betaine, 1.2-4.5% of the dimethyl siloxane, 0.2-1.5% of the nonionic fluorinated surfactant and the balance of the deionized water. The hydrate promoter can be widely applied to fields of gas hydrate storage and transportation technologies, gas hydrate separation technologies, sea water desalination and the like; the hydrate promoter is low in cost and low in consumption, hydrate generation conditions are reduced, time is shortened, the gas storage capacity is improved, and the economic benefit of hydrate production is effectively increased.

The invention relates to the field of gas storage, and discloses a gas storage tank. The gas storage tank comprises n pressure resisting tanks which are sequentially sleeved from inside to outside, nis larger than or equal to two, the n pressure resisting tanks divide the interior of the gas storage tank into n layers of spaces, a gas inlet and outlet pipe with a valve is arranged on each pressure resisting tank, and gas can enter in or flow out of the spaces of the corresponding layers through the gas inlet and outlet pipes. The gas storage tank has the advantages of being small in occupyingspace and large in gas storage amount, the tank is applied to a new-energy car, and the car driving capacity is obviously improved.

The invention discloses a method for compositing storage hydrogen from a hydrogen cage-type compound; organic matter serves as hydrogen storage material, and simultaneously two methods are adopted to composite the storage hydrogen; the hydrogen not only can exist on a cage-type main molecule body in the form of a proton, but also can be stored in a cage-type hole in the form of a hydrogen molecule. The hydrogen storage material of the invention stores hydrogen in two ways, and the alcohol and the phenol of the main skeleton molecule body which forms hydrate store the hydrogen in the form of protons; hydrogen bonds between the organic molecules interact to form an inclusion compound, and the hydrogen molecules serve as guest molecules and are wrapped in the cage-type hole; the gas storage density is high and can be improved by 100 to 300 percent compared with pure hydrate storage hydrogen; and the gas storage conditions are mild.

The invention discloses a carbon dioxide laser. The carbon dioxide laser comprises a gas storage tube (5), a water cooling tube (6) and a discharge tube (7), wherein the water cooling tube (6) is sleeved on the outside of the discharge tube (7), the air storage tube (5) is sleeved on the outside of the water cooling tube (6), a positive electrode (1) and a negative electrode (10) are respectively arranged in an anode resonant cavity (2) and a cathode resonant cavity (9) of the discharge tube (7), a water inlet pipe (8) and a water outlet pipe (3) are respectively arranged at two ends of the water cooling tube (6), the anode resonant cavity (2) is communicated with the air storage tube (5) through a gas return tube (4) wound around the outside of the water cooling tube (6), a bump (11) is arranged in the middle of the gas storage tube (5), and the inner diameter of the bump (11) is greater than the inner diameters of two ends of the gas storage tube (5). The carbon dioxide laser has the advantages that bending strength of the product is increased, stability of the product is increased, output power is stable, working gas storage capacity is improved, and service life is improved greatly.

The invention relates to a manufacturing method of a copper alloy seamless gas cylinder. According to the production process of the manufacturing method, the gas cylinder is formed through blanking, annealing, reverse extruding, deep drawing, annealing, closing, heat treatment, machining, degreasing treatment and carbon fiber winding and curing. In the closing procedure, a hot spinning method is adopted to process a barrel material into a spherical shape or an ellipsoidal shape and form a bottle neck through spinning, and a seamless copper alloy inner container is manufactured. In the windingprocedure, carbon fibers are wound on the outer layer to improve the bursting pressure of the gas cylinder, and the safety of the gas cylinder is guaranteed. Heating and curing are carried out, the manufactured gas cylinder inner container adopts seamless copper alloy materials, and a carbon fiber composite material reinforcing layer impregnated with resin is fully wound on the outer surface.

The invention discloses steel for a sulfur-resistant gas cylinder pipe. The steel is prepared from the chemical components in percentage by mass: 0.29%-0.31% of C, 0.20%-0.30% of Si, 0.80%-0.90% of Mn, 1.00%-1.10% of Cr, 0.25%-0.30% of Mo, 0.15%-0.20% of Ni, 0.025%-0.035% of Nb, 0.08%-0.10% of V, less than or equal to 0.015% of P, less than or equal to 0.002% of S, less than or equal to 0.015% ofP+S, less than or equal to 0.008% of As, less than or equal to 0.005% of Sn, less than or equal to 0.005% of Pb, less than or equal to 0.005% of Sb, less than or equal to 0.005% of Bi, less than or equal to 0.00015% of [H], less than or equal to 0.0015% of [O], less than or equal to 0.0050% of [N] and the balance of Fe. Through the components, it can be known that according to the steel for the sulfur-resistant gas cylinder pipe, alloying is conducted through the conventional alloy elements of C, Si, Mn, Cr, Mo and the like, micro alloying is conducted by adding the small amount of V, Ni and Nb, and thus the steel has higher toughness than that of 30CrMo in the standard of the national 'large-volume steel seamless gas cylinder' (GB / T 33145-2016).

The invention discloses an underground ore transport dumper. The underground ore transport dumper comprises a dumper body, a drive device, a braking system and a steering device. The dumper body comprises a front dumper body and a rear dumper body, the front dumper body is provided with a front axle, the rear dumper body is provided with a rear axle, and the front dumper body and the rear dumper body are connected through a dumper body connecting device. The drive device, the braking system and the steering device are arranged on the dumper body. The front dumper body is further provided with a cab. The underground ore transport dumper has the beneficial effects that dumper body reliability is good, connection is stable, and the front dumper body and the rear dumper body merely affect each other; under the condition that it is guaranteed that the height of the dumper body is not increased, the drive device can reduce the interference, caused by the terrain, to a transmission device, and transmission reliability and stability are improved. The braking system has the beneficial effects of being good in reliability, large in gas storage amount and convenient to use. The defects that an existing underground ore transport vehicle is large in design difficulty, poor in stability, large in influence caused by the terrain and poor in safety are overcome and the good popularization value and practical value are achieved.

The invention relates to the technical field of hydrogen sulfide treatment, in particular to an intelligent emergency system and method for hydrogen sulfide. The system comprises a spray device, a hydrogen sulfide concentration monitor and a controller. By means of the hydrogen sulfide concentration monitor, the controller and the spray device, the problem that the requirements of protecting personnel security and reducing environmental pollution cannot be met simultaneously in an existing hydrogen sulfide leakage emergency disposal technology is solved. The system is high in automation degree, and carries out emergency reaction on a hydrogen sulfide leakage point in a short time, so that the diffusion range of hydrogen sulfide is effectively controlled, and precious time for emergency rescue and evacuation of people in each protection area is gained.

The invention discloses a weak detonation tank for a pulse soot blower. The weak detonation tank for the pulse soot blower comprises a tank body with an air outlet, an air inlet pipe, a gas mixing deice arranged at a horizontal section part of the air inlet pipe, a barometer used for measuring a gas pressure inside the tank body and installed at the sidewall of the tank body in a sealing manner, a fan device, an ignition device, a first valve arranged at the air outlet which is located at the bottom of the tank body, a second valve arranged at the end part of the free end of the vertical section of the air inlet pipe to cover multiple air holes, and a control device connected to the barometer, the first valve, the second valve and the ignition device. Due to the specially designed gas mixing device in the air inlet pipe, the fuel gas is mixed more uniformly; and due to the addition of the barometer, the valves and the control device, the control of the weak detonation tank is more humanized.

The invention relates to a compressed-air storage device and a natural energy power station with the compressed-air storage device. The compressed-air storage device comprises an air storage tank, a sealing device and a water draining device. The air storage tank is arranged on six cement columns which are uniformly distributed and support the air storage tank; the cement columns are placed on the upper plane of a cement base station; the top of the air storage tank is connected with the sealing device, while the bottom of the air storage tank is provided with the water draining device; and ladders are arranged between the water draining device and the sealing device and uniformly distributed on a shell of the air storage tank. Both the inner wall and the outer wall of the air storage tank are made from ship plate steel with yield strength being 550-1,000 MPa and thickness being 5-10 mm. The shell of the air storage tank is 1m in thickness and 1,022 m<3> in capacity and can bear 1,200-1,800 atmospheres. The natural energy power station is provided with the compressed-air storage device. The technical solution generates the following benefits that the air storage device is simple in structure and the material of the air storage tank has high the yield strength and can bear large pressure.

A method for storing and / or transporting oil - gas in solid state mixture includes mixing water with oil product to form emulsion , contacting formed emulsion with natural gas for forming natural gas to be hydrate in oil product and water to obtain hydrate oil liquid , controlling temperature of said hydrate oil liquid at temperature of minus 1 to minus 15 deg.c for making it be solidified in order to store and / or transport oil - gas in its solidified state under constant pressure or low pressure .

The invention relates to an underwater impact injury experiment simulation device. The underwater impact injury experiment simulation device comprises an underwater experiment support, an animal fixing brace and an underwater breathing system, wherein the underwater experiment support comprises an inner fixing ring, an outer fixing ring, 16 spokes and a square beam; the inner fixing ring and the outer fixing ring are used for stabilizing the structure of the underwater experiment support; the 16 spokes are uniformly distributed along the diameter direction of the outer fixing ring and are used for fixing the animal fixing brace; and the square beam is used for hoisting the underwater experiment support. The animal fixing brace is formed by welding steel pipes and fixing pieces; and the steel pipes are hollow and used for conveying compressed air to a mask, and the fixing pieces are used for fixing experimental animals. The underwater breathing system is formed by sequentially connecting a compressed air tank, a breather pipe, a steel pipe and an underwater breathing mask. The underwater impact injury experiment simulation device is simple in structure, reasonable in design, controllable in model, high in safety and suitable for underwater medical scientific research tests such as underwater impact injury.

The invention provides an ultrahigh-pressure full-winding gas cylinder with an aluminum alloy inner container sealed at one end and a manufacturing method of the ultrahigh-pressure full-winding gas cylinder. The ultrahigh-pressure full-winding gas cylinder with the aluminum alloy inner container sealed at one end comprises the aluminum alloy inner container, a composite material reinforcing layer and an external protection layer; the aluminum alloy inner container is of an integrated seamless structure with one end sealed and the other end closed to form an end socket and a bottle opening, the end socket and the sealed bottom are located at the two ends of a straight cylinder section correspondingly, and the bottle opening is located on the end socket; the length of the aluminum alloy inner container is smaller than 5 meters, the nominal outer diameter of the straight cylinder section is phi 406-phi 850 mm, and the rated pressure of the ultrahigh pressure gas cylinder is 30-90 Mpa; the outer side of the aluminum alloy inner container is coated with the composite material reinforcing layer, and the composite material reinforcing layer is formed by winding carbon fibers in a spiral and annular combined winding mode and curing the carbon fibers through resin; and the outer protection layer is coated on the outer side of the composite material reinforcing layer, and is formed by winding glass fibers in a spiral and annular combined winding mode and curing the glass fibers by using resin.

The invention belongs to the technical field of hydrate preparation, and in particular, relates to a natural gas hydrate continuous reaction device with synergistic effect of adsorption and hydration.A main body structure comprises a first gas tank, a feeding pipe, a screw pump adsorption kettle, a solid-liquid mixing tank, a water tank, a first-stage reaction kettle, a second-stage reaction kettle, a liquid collecting tank, a hydrate collecting tank and a second gas tank; based on rich specific surface area and porous characteristics of activated carbon, natural gas is adsorbed by an adsorption axe of a screw pump, activated carbon with the porous characteristic is used as a carrier, the gas-liquid contact area is increased, nucleation and power generation of the natural gas hydrate areaccelerated, two-stage reaction is conducted through the first-stage reaction kettle and the second-stage reaction kettle layer by layer, the conversion rate of the natural gas hydrate is increased layer by layer, and efficient, rapid and continuous reaction of the natural gas hydrate is achieved. The device is simple in structure, natural gas is pre-adsorbed through activated carbon, and the gasstorage capacity is increased through the double mechanisms of physical adsorption and natural gas hydrate.

The invention provides a method for preparing gas hydrate accelerant, which takes a high pressure gas cylinder as gas source; the high pressure gas cylinder is regulated to have proper pressure by a pressure regulating valve, and the consumed natural gas is calculated by a mass flowmeter; the temperature and the pressure in a reactor are monitored by a pressure and temperature transmitter; thermostatic waterbath is used for controlling the temperature of the liquid in a trough, thus regulating the temperature in the reactor; a data acquisition system and a computer are used for collecting data, and an opto-electrical lens is used for monitoring the forming situation of hydrate in the reactor. The composite accelerant is low in cost and little in dosage, ensures the generating condition ofthe hydrate to be reduced, the time to be shortened and the gas storage quantity to be increased, and effectively improves the economic benefit of the production of the hydrate.

The invention belongs to the technical field of gas hydrate production promotion and utilization, and in particular relates to a hydrate accelerator and a preparation method thereof. said Hydration Promoter, It is prepared by stirring cocamidopropyl betaine, dimethylsiloxane, non-ionic fluorosurfactant and deionized water at 65~85℃ for 30~40 minutes; among them, cocamidopropyl The mass percentage of betaine in the solvent is 3-7%; the mass percentage of dimethylsiloxane in the solvent is 1.2-4.5%; the mass percentage of non-ionic fluorosurfactant in the solvent is 0.2- 1.5%, and the rest is deionized water. The hydrate accelerator of the present invention can be widely used in the fields of gas hydrate storage and transportation technology, gas hydrate separation technology, and seawater desalination; and the cost is low, the dosage is small, the conditions for hydrate formation are reduced, the time is shortened, and the gas storage capacity is reduced. The increase effectively improves the economic benefits of hydrate production.

The invention relates to a flat-head truck bumper capable of absorbing impact kinetic energy, which belongs to the field of automobile accessories, and is characterized in that a plurality of disc-shaped rubber buffer airbags are transversely arranged in front of a rectangular frame side by side, and a bumper made of rectangular high-density resin and a steel wire mesh is arranged in front of the buffer airbags; a cuboid-shaped cab is arranged above the front surface of the frame; a groove is transversely and vertically formed in the middle of the front portion of a cab, a plurality of rectangular buffering air cushions are transversely and vertically installed in the groove, and a rectangular middle net made of resin materials is installed in front of the buffering air cushions. The lower portion of each buffering air cushion is connected with the upper portion of the corresponding buffering air bag below through a cylindrical rubber pipeline, and the interiors of the buffering air cushions are communicated. When the bumper of the flattop truck is impacted, the bumper extrudes the rear buffer air bag backwards instantly, and the buffer air bag starts to be compressed quickly and absorbs kinetic energy to release internal air to the buffer air cushion from the rubber pipeline.

The invention discloses a cage-shaped structure composite hydrogen storage method. The invention uses organic matters which contain C-C double bonds and can form hydrogen bonds as hydrogen storage materials, double bonds of the hydrogen storage materials can be broken under the condition of light irradiation and existence of hydrogenation catalysts. Carbon atoms accept hydrogen protons at the broken parts of the double bonds for forming novel single bonds, i.e. the catalytic hydrogenation reaction is carried out. After the organic matter takes the catalytic hydrogenation reaction, cage-shapedcompounds with polyhedral holes can be formed through hydrogen bonds, a plurality of cage-shaped holes are formed in the cage-shaped compounds, and hydrogen gas molecules can enter the holes, i.e. the hydrogen gas molecules are covered in the cage-shaped holes. The invention can use one kind of gas storage materials for simultaneously storing the gas in two modes, in addition, the hydrogen gas stored in the hydrogen cage type hydrates can be easily desorbed, and the invention has the advantages of high gas storage density, safety, convenient transportation and the like.

The invention discloses a carbon dioxide laser. The carbon dioxide laser comprises a gas storage tube (5), a water cooling tube (6) and a discharge tube (7), wherein the water cooling tube (6) is sleeved on the outside of the discharge tube (7), the air storage tube (5) is sleeved on the outside of the water cooling tube (6), a positive electrode (1) and a negative electrode (10) are respectively arranged in an anode resonant cavity (2) and a cathode resonant cavity (9) of the discharge tube (7), a water inlet pipe (8) and a water outlet pipe (3) are respectively arranged at two ends of the water cooling tube (6), the anode resonant cavity (2) is communicated with the air storage tube (5) through a gas return tube (4) wound around the outside of the water cooling tube (6), a bump (11) is arranged in the middle of the gas storage tube (5), and the inner diameter of the bump (11) is greater than the inner diameters of two ends of the gas storage tube (5). The carbon dioxide laser has the advantages that bending strength of the product is increased, stability of the product is increased, output power is stable, working gas storage capacity is improved, and service life is improved greatly.

The invention discloses a constant-pressure air supply valve terminal system which comprises a base support plate, a central air supply tank, air connectors, a valve terminal mother board, one or a plurality of electromagnetic valves and pressure regulating valves. The base support plate is fixedly connected with the bottom of the valve terminal mother board, one or a plurality of air inlet holes and a plurality of air outlet holes are formed in the central air supply tank and are used for being connected with compressed air, a plurality of independent air inlets and a plurality of independent exhaust ports are formed in the valve terminal mother board, the air outlet holes of the central air supply tank are connected with air inlets of the corresponding pressure regulating valves by the air connectors, the pressure regulating valves are fixed onto the valve terminal mother board, air outlets of the pressure regulating valves which are fixed onto the valve terminal mother board are connected with air inlets of the electromagnetic valves, the air inlets of the electromagnetic valves are formed in the valve terminal mother board, and driving ports which are used for being connected with execution components are formed in the electromagnetic valves. The constant-pressure air supply valve terminal system has the advantages that air can be supplied for various pneumatic components by the single central air supply tank, so that mounting space can be saved, maintenance can be facilitated when devices fail, and air inlet pipelines and exhaust pipelines of the electromagnetic valves are independent and do not interfere with one another.

The invention belongs to the technical field of energy materials, and discloses a hydrate accelerator and its application in the preparation of gas hydrate with high gas storage density. The accelerator includes amino acid and water; it is formed by uniformly mixing 100 parts by mass of water and 0.05-5 parts by mass of amino acid. Said application is specifically mixing 100 parts by mass of water and 0.05 to 5 parts by mass of amino acid to obtain an aqueous accelerator solution; placing the aqueous accelerator solution in a high-pressure reactor, feeding high-pressure gas at a low temperature, and reacting for a period of time , to obtain solid gas hydrates with high gas storage density. The accelerator of the present invention is green and environmentally friendly; it can shorten the hydration induction time, increase the gas storage capacity, and increase the gas storage density; at the same time, the accelerator of the present invention is cheap, small in dosage, wide in source, recyclable and reusable, and has no effect on temperature and pressure conditions. There is no special requirement; the method for preparing the gas hydrate with high gas storage density is fast, efficient, simple and easy to realize.

The application discloses a lead-acid power battery pack convenient for wire connection, which belongs to the technical field of power batteries, and solves the problems of unreasonable layout and poor safety of lead-acid power battery pack wires in the prior art. The lead-acid power battery pack of the present application includes a plurality of batteries arranged in multiple rows, and a plurality of batteries are connected in series through terminals and wires connected to the terminals, and the terminals are arranged on the battery cover of the battery; in two adjacent rows of batteries, wherein The terminals of one row of batteries are located on the side of the battery cover close to the other row of batteries, and the terminals are arranged along the length direction of the battery; the edge of the battery cover is provided with a concave structure, and the concave structure of two adjacent battery covers is used for Wire grooves for receiving wires. The lead-acid power battery pack of the present application is used for current discharge.

The invention discloses a thyratron gas-filling system. The system comprises a thyratron put in a closed cavity; the thyratron is communicated with a hydrogen gas storage tank through a pipe; a station valve and a hydrogen gas filling micrometering valve are arranged in sequence on the pipe between the thyratron and the hydrogen gas storage tank; the hydrogen gas storage tank is connected to a first metal hydride hydrogen gas storage device through a pipe; a hydrogen gas inlet valve, a first isolation valve and a first hydrogen gas storage valve are arranged in sequence on the pipe between the hydrogen gas storage tank and the first metal hydride hydrogen gas storage device; two pipe branches are arranged in sequence on the pipe between the hydrogen gas inlet valve and the first isolation valve; connection valves and empty valves are arranged on the two pipe branches respectively; a first film vacuum meter is arranged on the hydrogen gas storage tank; a second film vacuum meter is arranged on the pipe between the thyratron and the station valve. Through the adoption of the thyratron gas-filling system, the effect of filling high-purity and pressure-controlled hydrogen gas, deuterium gas and the like into the thyratron can be achieved.

The invention relates to an inerting system with a nitrogen-rich gas storage function. The inerting system comprises an air separator, a nitrogen-rich gas storage tank, a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, an oxygen concentration sensor, a pressure sensor and an inerting controller. In the climbing and cruising stages of an airplane, when it is measured that the oxygen concentration in a fuel tank is within a safe range, the inerting controller controls the first stop valve and the third stop valve to be opened and controls the second stop valve and the fourth stop valve to be closed, and the air separator supplies nitrogen-rich gas to the gas storage tank; and in the descending stage of the airplane, when it is measured that the oxygen concentration in the fuel tank exceeds the safety range, the inerting controller controls the first stop valve, the second stop valve and the fourth stop valve to be opened and controls the third stop valve to be closed, and the air separator and the air storage tank supply nitrogen-rich gas to the fuel tank at the same time. According to the technical scheme, the system has the following beneficial technical effects that the nitrogen-rich gas can be reasonably and efficiently distributed to the target fuel tank, and the low oxygen concentration state in the fuel tank in the descending stage is kept.