A fuel gas carbon dioxide gas generator

Abstract

The present invention provides a fuel gas carbon dioxide generator, comprising a fuel gas generating assembly, a carbon dioxide supply assembly, and a mixing and working assembly. The carbon dioxide supply assembly is connected to a fuel gas nozzle and utilizes the fuel gas nozzle pressure to achieve self-pressurization, ensuring synchronous adaptation of liquid carbon dioxide supply and combustion. A pressurized airbag is disposed within the supply assembly. The pressurized airbag and the air guide holes within the pressurized airbag enable extrusion and output of liquid carbon dioxide, ensuring a stable supply of liquid carbon dioxide and maximally discharging liquid carbon dioxide from the carbon dioxide storage tank to improve utilization, thereby achieving relatively long-term gas power. The fuel gas and carbon dioxide mixture is evenly distributed from the center of the mixing cone body of the mixing and working assembly to the surrounding area, thereby improving the mixing efficiency of fuel gas and carbon dioxide, enhancing the carbon dioxide phase change efficiency, ensuring the stability of the mixed gas flow and the uniformity of the gas pressure, and improving energy utilization.

Description

Technical Field

[0001] The invention belongs to the field of power and transmission, and in particular relates to a fuel gas and carbon dioxide gas generator. Background Art

[0002] Rocket missile launch systems use various types of propulsion systems, including compressed air, gas, and gas-steam. Each type of propulsion system has its own advantages and disadvantages. Gas-powered launch systems are simple and easy to use, but the high-temperature gas can cause significant damage to the launch system and generate significant atmospheric pollution. Gas-steam launch systems overcome some of the challenges of gas-powered launch systems, but their primary power source is high-temperature, high-pressure water vapor. Water vapor is oxidizing at high temperatures and pressures, easily corroding metal components within the system and reducing its lifespan. Furthermore, high-pressure steam can cause "steam ignition," posing a certain explosion risk.

[0003] Patent application CN115773191A discloses a gas engine that uses gunpowder to stimulate the phase change of liquid carbon dioxide. By mixing liquid carbon dioxide with fuel gas, the liquid carbon dioxide is converted into gaseous carbon dioxide, undergoing a phase change to form a mixed gas that serves as a power source. However, this device only provides a carbon dioxide supply pipeline, without a carbon dioxide medium supply device with a stable flow rate and adaptive to the fuel gas system. This results in low pressure, an inability to achieve a continuous and stable supply of carbon dioxide, and difficulty in achieving relatively long-term gas power. Furthermore, the high-speed carbon dioxide fluid ejected from the gas supply branch pipe radially enters the heat exchange chamber, inevitably causing turbulent flow losses between adjacent secondary valve outlets. This results in unstable pressure differentials within the heat exchange chamber, and poor phase change efficiency and energy utilization. Summary of the Invention

[0004] The purpose of the present invention is to provide a fuel gas carbon dioxide gas generator to improve phase change efficiency and energy utilization rate in view of the shortcomings of the existing technology.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A fuel gas and carbon dioxide gas generator, comprising a fuel gas generating component, a carbon dioxide supply component and a mixing and working component;

[0007] The gas generating assembly includes a gas igniter, a fuel storage tank and a gas nozzle; one end of the fuel storage tank is connected to the gas igniter, and the other end of the fuel storage tank is connected to the gas nozzle;

[0008] The carbon dioxide supply assembly includes a boost pipe, a carbon dioxide storage tank, a flow guide pipe, and a one-way valve; one end of the carbon dioxide storage tank is connected to the boost pipe, and the other end of the carbon dioxide storage tank is connected to the flow guide pipe, and a one-way valve is provided on the flow guide pipe; the boost pipe is connected to the gas nozzle;

[0009] The gas generating assembly is connected to the mixing and working assembly through a gas nozzle;

[0010] The flow guide pipe is connected to the mixing and working component;

[0011] The mixing and working component includes a guide mixing cone and a mixing chamber. The guide mixing cone is arranged inside the mixing chamber and is arranged along the axial direction of the mixing chamber.

[0012] In the present invention, the carbon dioxide supply component is connected to the gas nozzle and realizes self-pressurization by means of the nozzle pressure, thereby ensuring synchronous adaptation of liquid carbon dioxide supply and combustion; the carbon dioxide and gas are mixed by means of the guide mixing cone, thereby improving the phase change efficiency and energy utilization rate.

[0013] Furthermore, the guide mixing cone includes a mixing cone body, a carbon dioxide inlet cavity, a carbon dioxide buffer cavity, a carbon dioxide injection channel, and a gas-carbon dioxide mixing channel;

[0014] The mixing cone body is fixed inside the mixing chamber, and the mixing cone body protrudes along the direction of the gas nozzle to form a conical protrusion; one end of the carbon dioxide inlet chamber is connected to the guide pipe, and the other end of the carbon dioxide inlet chamber is connected to the carbon dioxide buffer chamber.

[0015] In one embodiment of the present invention, a carbon dioxide buffer chamber is arranged inside the mixing cone body, a first end of the carbon dioxide injection channel is connected to the carbon dioxide buffer chamber, and a second end of the carbon dioxide injection channel is connected to the gas-carbon dioxide mixing channel; the gas-carbon dioxide mixing channel is evenly arranged along the circumferential direction of the mixing cone body.

[0016] In another embodiment of the present invention, the carbon dioxide buffer chamber forms a conical inner cavity toward the top of the mixing cone body, the first end of the carbon dioxide injection channel is connected to the carbon dioxide buffer chamber, the second end of the carbon dioxide injection channel is connected to the tail cavity of the gas nozzle, and the axial direction of the carbon dioxide injection channel is arranged at an angle to the axial direction of the mixing cone body; the gas and carbon dioxide mixing channel is evenly arranged along the circumferential direction of the mixing cone body.

[0017] The conical protrusion guides the high-temperature gas ejected from the nozzle through the outer circumference of the mixing cone body to the gas-carbon dioxide mixing channel. The liquid carbon dioxide enters the carbon dioxide buffer chamber and then mixes with the high-temperature gas in the gas-carbon dioxide mixing channel through the carbon dioxide injection channel, thereby improving the heat exchange capacity; the gas-carbon dioxide mixture is evenly sprayed from the center of the mixing cone body to the surrounding areas, which can improve the stability of the gas-carbon dioxide mixture airflow and the uniformity of the air pressure, enhance the efficiency of the phase change of the gas and carbon dioxide mixture, and improve energy utilization.

[0018] Furthermore, the sum of the cross-sectional areas of the second ends of the carbon dioxide injection channels is 1.2-2.5 times the cross-sectional area of the carbon dioxide inlet chamber, thereby reducing the fluid resistance of liquid carbon dioxide entering the gas-carbon dioxide mixing channel and improving the mixing uniformity and efficiency of liquid carbon dioxide and gas.

[0019] Furthermore, a pressurized air bag or an extrusion piston is provided in the carbon dioxide storage tank;

[0020] The extrusion piston separates the carbon dioxide storage tank into an extrusion chamber and a liquid storage chamber;

[0021] The pressurized airbag includes an airbag and an inflation tube. The inflation tube is arranged inside the airbag, and the two ends of the inflation tube are respectively connected to the two ends of the airbag, and the inflation tube is connected to the boost tube; on the inflation tube, multiple groups of air guide holes are arranged from one end connected to the boost tube to the center; the distance between adjacent air guide hole groups increases uniformly from the end connected to the boost tube to the center, and the air guide hole group includes multiple air guide holes arranged along the circumference of the inflation tube.

[0022] The present invention comprises a carbon dioxide supply assembly and a pressurized airbag disposed within the carbon dioxide supply assembly. The high-temperature gas from the gas generating assembly is introduced into the pressurized airbag via a pressurized pipe. The pressurized airbag expands and squeezes the liquid carbon dioxide in the carbon dioxide storage tank, increasing the pressure of the liquid carbon dioxide. The liquid carbon dioxide is then introduced into the mixing and working assembly via a guide pipe and a one-way valve. A gas guide pipe is disposed within the pressurized airbag, and a gas guide hole is provided on the gas guide pipe. The gas guide hole is disposed on the gas inlet side of the airbag. The gas on the airbag inlet side is greater than on the other side, and the expansion speed of the airbag inlet side is faster than that of the other side. The airbag inlet side swells first, and then the middle portion of the airbag mates with the cavity of the carbon dioxide storage tank. The airbag on the other side then mates with the inner cavity of the carbon dioxide storage tank, squeezing all the liquid carbon dioxide on the airbag inlet side to the other side of the carbon dioxide storage tank until all the liquid carbon dioxide in the carbon dioxide storage tank is squeezed out. The synchronization of liquid carbon dioxide supply and gas generation is achieved, and the stable supply of liquid carbon dioxide is ensured through the extrusion output of liquid carbon dioxide, so as to discharge the liquid carbon dioxide in the carbon dioxide storage tank to the greatest extent to achieve the purpose of extending the pressurization cooling time, and obtain relatively long-term stable gas power.

[0023] Liquid carbon dioxide can be squeezed out by squeezing the piston, ensuring a stable supply of liquid carbon dioxide, so as to discharge the liquid carbon dioxide in the carbon dioxide storage tank to the greatest extent possible to extend the pressurization cooling time and obtain relatively long-term gas power.

[0024] Furthermore, the pressurized airbag further includes a first inflation tube fixing plate, a second inflation tube fixing plate, an airbag pressure plate, and a liquid guide head; the first inflation tube fixing plate includes a first disc portion and a first guide fixing portion, and the second inflation tube fixing plate includes a second disc portion, a second guide fixing portion, and an inflation tube fixing portion; the interior ends of the airbag are respectively expanded by the first disc portion and the second disc portion, the first guide fixing portion and the second guide fixing portion respectively pass through the two ends of the airbag, the airbag pressure plate is connected to the first guide fixing portion, and the liquid guide head is connected to the second guide fixing portion;

[0025] The inflation tube includes a tube body, an inflation tube locking head, and an inflation tube fixing head. The tube body is a hollow structure and an air guide hole is provided on the tube body. An inflation tube locking head is provided at one end of the tube body, and an inflation tube fixing head is provided at the other end of the tube body. The inflation tube fixing head is fixed on the inflation tube fixing part. The first inflation tube fixing plate is sleeved on the tube body, and the inflation tube is fixed to one end of the carbon dioxide storage tank through the inflation tube locking head. The tube body is connected to the booster tube.

[0026] The airbag is fixed by the first inflation tube fixing plate and the second inflation tube fixing plate, and the interior of the airbag is expanded. The airbag can remain stable when the airbag is inflated, and the airbag is easy to expand. It can fit with the inner wall of the carbon dioxide storage tank to completely discharge the carbon dioxide liquid, further improving the discharge rate of liquid carbon dioxide in the carbon dioxide storage tank; the tube body is fixed by the inflation tube locking head and the fixing head device, thereby improving the structural stability of the tube body.

[0027] Furthermore, the expression of the air guide hole diameter is as follows:

[0028] ;

[0029] ;

[0030] Among them, d i is the diameter of the i-th group of air guide holes, A i is the surface area of the i-th group of air guide holes, A c is the cross-sectional area of the inflation tube, n is the number of air guide hole groups, and s is the number of air guide holes in the air guide hole group.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The carbon dioxide supply assembly of the present invention is connected to the gas nozzle, and uses the nozzle pressure to achieve self-pressurization, ensuring that the liquid carbon dioxide supply and combustion are synchronized and adaptive; the gas and carbon dioxide mixture is evenly sprayed from the center of the mixing cone body of the mixing work assembly to the surrounding area, which can improve the stability of the gas and carbon dioxide mixture airflow and the uniformity of the air pressure, and can improve the efficiency of the phase change of the gas and carbon dioxide mixture, thereby improving energy utilization.

[0033] The present invention provides a pressurized airbag inside the carbon dioxide supply component, and realizes the extrusion output of liquid carbon dioxide through the pressurized airbag to ensure the stable supply of liquid carbon dioxide. The air guide hole is provided on the air inlet side, and the expansion speed of the airbag air inlet side is faster than the expansion speed of the other side. The liquid carbon dioxide on the airbag air inlet side is all squeezed to the other side of the carbon dioxide storage tank until all the liquid carbon dioxide in the carbon dioxide storage tank is squeezed out; the liquid carbon dioxide in the carbon dioxide storage tank is discharged to the greatest extent to achieve the purpose of extending the pressurized cooling time; and relatively long-term gas power can be obtained.

[0034] The two ends of the fuel storage tank of the present invention are respectively connected to the gas igniter and the gas nozzle, integrating the fuel storage, ignition and injection into a single flow path, shortening the gas transmission distance and reducing the flow resistance; one end of the carbon dioxide storage tank is connected to the boost pipe, and the boost pipe is connected to the gas nozzle. The axial arrangement of the guide mixing cone further optimizes the integration of the spatial structure, the system is compact, and the boosting, combustion and mixing are efficiently connected, realizing the miniaturization and modularization of the device.

[0035] The gas directly generates power to drive the gas nozzle, and at the same time transmits the energy as boosting power to the carbon dioxide storage tank through the boosting pipe to form a self-sustaining pressure cycle, which improves energy utilization and reduces external pumping energy consumption; the guide mixing cone not only realizes gas mixing, but also forms a Venturi effect through the conical structure to convert the kinetic energy of the gas jet into a local low-pressure area, attracting carbon dioxide to mix more evenly into the combustion, thereby improving the energy conversion rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of a fuel gas carbon dioxide generator according to the present invention;

[0037] Figure 2 This is a schematic structural diagram of the gas generating assembly of the present invention;

[0038] Figure 3 This is a schematic structural diagram of the carbon dioxide supply assembly of the present invention;

[0039] Figure 4 Schematic diagram of the structure of the pressurized airbag of the present invention;

[0040] Figure 5 This is a schematic diagram of the extrusion piston structure of the present invention;

[0041] Figure 6 This is a schematic structural diagram of a hybrid working assembly according to one embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the structure of a flow-guiding mixing cone according to an embodiment of the present invention;

[0043] Figure 8 This is a schematic structural diagram of a hybrid working component according to another embodiment of the present invention.

[0044] In the figure, 1-gas generating assembly, 11-gas igniter, 12-fuel storage tank, 13-gas nozzle, 14-boosting pipe, 131-gas nozzle tail chamber;

[0045] 2-CO2 supply assembly, 21-pressurized airbag, 22-CO2 liquid storage tank, 23-flow guide tube, 24-check valve, 25-extrusion piston; 211-airbag, 212-inflating tube, 213-first inflating tube fixing plate, 214-second inflating tube fixing plate, 215-airbag pressure plate, 216-liquid guide head, 2131-first disc, 2132-first guide fixing portion, 2141-second disc, 2142-second guide fixing portion, 2143-inflating tube fixing portion; 2121-tube body, 2122-inflating tube locking head, 2123-inflating tube fixing head, 2124-air guide hole, 221-extrusion chamber, 222-liquid storage chamber;

[0046] 3-mixing work component, 31-guiding mixing cone, 32-mixing chamber, 311-mixing cone body, 312-carbon dioxide inlet chamber, 313-carbon dioxide buffer chamber, 314-carbon dioxide injection channel, 315-gas-carbon dioxide mixing channel, 3111-conical protrusion. DETAILED DESCRIPTION

[0047] The present invention will be described in detail below with reference to the following embodiments. It should be noted that the embodiments and features of the embodiments may be combined unless they conflict. For ease of description, the words "upper," "lower," "left," and "right" appearing below merely indicate the directions of upper, lower, left, and right relative to the accompanying drawings and do not limit the structure.

[0048] Example

[0049] like Figures 1-8 A fuel gas and carbon dioxide gas generator of this embodiment includes a fuel gas generating component 1, a carbon dioxide supply component 2 and a mixing and working component 3.

[0050] The gas generating assembly 1 is adapted to generate high temperature gas and introduce an appropriate amount of high temperature gas into the carbon dioxide supply assembly 2 through a pipeline. The gas generating assembly 1 is connected to the mixing working assembly 3 and introduces the generated high temperature gas into the mixing working assembly 3 .

[0051] The carbon dioxide supply component 2 is suitable for supplying liquid carbon dioxide. The carbon dioxide supply component 2 is connected to the mixing and working component 3 through a pipeline and introduces the liquid carbon dioxide into the mixing and working component 3.

[0052] The mixing and working component 3 is suitable for mixing high-temperature fuel gas with liquid carbon dioxide to achieve liquid-to-gas phase change expansion of the liquid carbon dioxide.

[0053] The gas generating assembly 1 includes a gas igniter 11, a fuel storage tank 12, and a gas nozzle 13. The fuel storage tank 12 stores fuel and ignites and burns through the gas igniter 11 at one end to generate high-temperature gas. The other end of the fuel storage tank 12 is fixedly connected to the gas nozzle 13, and the high-temperature gas is discharged outward through the gas nozzle 13.

[0054] like Figure 3 、 Figure 4 The carbon dioxide supply assembly 2 includes a boost pipe 14, a boost airbag 21, a carbon dioxide storage tank 22, a guide pipe 23 and a one-way valve 24. The carbon dioxide storage tank 22 stores liquid carbon dioxide. One end of the carbon dioxide storage tank 22 is connected to the boost pipe 14, and the other end of the carbon dioxide storage tank 22 is connected to the mixing and working assembly through the guide pipe 23 and the one-way valve 24; the boost pipe 14 is connected to the gas nozzle 13, and the high-temperature gas is introduced into the carbon dioxide supply assembly through the boost pipe 14; the boost airbag 21 is specifically an inflatable expansion mechanism. The boost airbag 21 is arranged inside the carbon dioxide storage tank 22, and the high-temperature gas of the gas generating assembly 1 is introduced into the boost airbag 21 through the boost pipe 14. The boost airbag 21 expands and squeezes the liquid carbon dioxide in the carbon dioxide storage tank 22, so that the pressure of the liquid carbon dioxide increases, thereby introducing the liquid carbon dioxide into the mixing and working assembly through the guide pipe 23 and the one-way valve 24.

[0055] The pressurized airbag 21 includes an airbag 211, an inflation tube 212, a first inflation tube fixing plate 213, a second inflation tube fixing plate 214, an airbag pressure plate 215, and a liquid guide head 216; the first inflation tube fixing plate 213 is provided with a first disc portion 2131 and a first guide fixing portion 2132, the second inflation tube fixing plate 214 is provided with a second disc portion 2141, a second guide fixing portion 2142, and an inflation tube fixing portion 2143. The two ends of the interior of the airbag 211 are respectively connected by the first disc portion 2131, the second guide fixing portion 2142, and the inflation tube fixing portion 2143 of the first inflation tube fixing plate 213. The second disc portion 2141 of the second inflation tube fixing plate 214 is stretched open, and the first guide fixing portion 2132 and the second guide fixing portion 2142 respectively pass through the two ends of the airbag 211, and the airbag pressure plate 215 is fixedly connected to the first guide fixing portion 2132 in a threaded manner, and the liquid guide head 216 is fixedly connected to the second guide fixing portion 2142 in a threaded manner, so that the first inflation tube fixing plate 213 and the airbag pressure plate 215 press the airbag 211, and the second inflation tube fixing plate 214 and the liquid guide head 216 press the airbag 211.

[0056] The inflation tube 212 includes a tube body 2121, an inflation tube locking head 2122 and an inflation tube fixing head 2123. The tube body 2121 is a hollow structure. An air guide hole 2124 is provided on the tube body 2121. High-temperature combustion gas is ejected from the air guide hole 2124 through the hollow tube body 2121. An inflation tube locking head 2122 is provided at one end of the tube body 2121, and an inflation tube fixing head 2123 is provided at the other end of the tube body 2121. The inflation tube fixing head 2123 is fixed to the inflation tube fixing portion 2143 in a threaded connection manner. The first inflation tube fixing plate 213 is sleeved on the tube body 2121 in a threaded connection manner, and the inflation tube 212 is locked to one end of the carbon dioxide storage tank 22 through the inflation tube locking head 2122. The tube body 2121 is connected to the booster pipe 14.

[0057] The inflation tube 212 is disposed within the airbag 211, with its ends connected to the ends of the airbag 211. Multiple groups of air guide holes are provided on the inflation tube 212, extending from the end connected to the boost tube 14 to the center. The distance between adjacent groups of air guide holes increases uniformly from the end connected to the boost tube 14 to the center. The air guide holes 2124 are evenly distributed along the circumference of the inflation tube 212.

[0058] The pressurized airbag 21 is positioned within the CO2 tank 22, where the pressure exceeds 10 MPa. To ensure that the airbag 211 can fully expel the liquid CO2 from the tank 22, it is designed in a slender, drum-like shape that matches the internal dimensions of the tank 22. Made of rubber, the airbag 211 is inflated. Due to the air guide holes 2124 located on the left side of the airbag 211, the left side of the airbag 211 expands faster than the right side. Consequently, the liquid CO2 on the left side of the airbag 211 is squeezed toward the right side of the tank 22, until all the liquid CO2 in the tank 22 is expelled. The airbag's design, similar to the slender drum shape of the CO2 tank, rather than other shapes, was the result of multiple iterations of design. This allows for easy installation, air intake and exhaust, while also being able to withstand 10 MPa of pressure and deform. After deformation, the airbag conforms to the tank's inner wall, allowing the liquid to be completely expelled.

[0059] like Figure 4 As shown, the air guide holes 2124 are arranged on the air inlet side of the inflation tube 212 (tube body 2121) to allow the air inlet side of the airbag to swell first to facilitate the liquid to be fully squeezed into the other side. Therefore, multiple groups of air guide holes 2124 are evenly arranged along the circumference of the same circle of the inflation tube 212.

[0060] In this embodiment, n groups of air guide holes are provided. To ensure that the gas released from the air guide holes 2124 causes the air bag inlet side to bulge out first, the aperture and position of the air guide holes 2124 need to be designed as follows:

[0061] Assume that the total flow rate flowing into the inflation tube 212 is Q (mass flow rate), and the inflation tube 212 is arranged at n positions with a lateral spacing of 1:2:4:...:2n (the last group of air guide holes does not exceed 1 / 3 of the position of the inflation tube 212 in the airbag). Assume that there are s air guide holes 2124 circumferentially arranged at each position, and the surface area of a single air guide hole 2124 at the i-th position is A. i The cross-sectional area of the inflation tube 212 is A c .

[0062] Let the flow rate flowing into the cross section at the i-th position be Q i The flow rate released upward at this section is Q i ’ .

[0063] The flow rate released from each section is equal, and because the total flow rate Q i It is equal to the sum of the flows released from all sections, so:

[0064] (1)

[0065] The pressure of high-pressure gas on the same cross section is the same, and the pressure at the i-th cross section is Pi :

[0066] (2)

[0067] The flow rate flowing into the i-th section is:

[0068] (3)

[0069] The flow rate released upward from the i-th section is:

[0070] (4)

[0071] From formula (2), we can get:

[0072] (5)

[0073] Combining (3) and (5), we can get and We can get:

[0074] (6)

[0075] From equations (1) and (4), we can know that:

[0076] (7)

[0077] Combining equations (6) and (7), we can obtain:

[0078] (8)

[0079] The relationship between the surface area of the air guide hole 2124 of the i-th section and the surface area of the air guide hole 2124 of the first section is obtained. Combining equations (1) and (4), we can obtain:

[0080] (9)

[0081] From formula (3), we can get:

[0082] (10)

[0083] Combining equations (9) and (10), we can obtain:

[0084] (11)

[0085] Then from formula (8), we can get:

[0086] (12)

[0087] The diameter d of the air guide hole can be obtained i :

[0088] ;

[0089] ;

[0090] Among them, d i is the diameter of the i-th group of air guide holes.

[0091] As another embodiment of the carbon dioxide supply component 2, Figure 5 The carbon dioxide supply component 2 includes a boosting pipe 14, an extrusion piston 25, a carbon dioxide storage tank 22, a guide pipe 23 and a one-way valve 24. The extrusion piston 25 is arranged in the carbon dioxide storage tank 22. The extrusion piston 25 divides the carbon dioxide storage tank 22 into an extrusion chamber 221 and a liquid storage chamber 222. The boosting pipe 14 introduces high-temperature combustion gas into the extrusion chamber 221 and pushes the extrusion piston 25 to squeeze the liquid carbon dioxide in the liquid storage chamber 222, thereby achieving the purpose of guiding the liquid carbon dioxide in the carbon dioxide storage tank 22 to the mixing and working component 3 through the guide pipe 23 and the one-way valve 24.

[0092] like Figure 6 、 Figure 7 、 Figure 8 The mixing and working component 3 includes a guide mixing cone 31 and a mixing chamber 32. The guide mixing cone 31 is fixedly arranged along the axial direction of the mixing chamber 32. The guide mixing cone 31 includes a mixing cone body 311, a carbon dioxide inlet chamber 312, a carbon dioxide buffer chamber 313, a carbon dioxide injection channel 314 and a gas-carbon dioxide mixing channel 315. The mixing cone body 311 is fixed to the inner cavity of the mixing chamber 32. The mixing chamber 32 is sealed and fixedly connected to the gas nozzle 13 as a whole; the mixing cone body 311 protrudes along the direction of the gas nozzle 13 to form a conical protrusion 3111, which guides the high-temperature gas ejected from the gas nozzle 13 to the outer circumference of the mixing cone body 311. A gas-carbon dioxide mixing channel 315 is axially provided on the outer side of the mixing cone body 311, and the high-temperature gas is guided to the gas-carbon dioxide mixing channel 315 through the conical protrusion 3111 for ejection; a carbon dioxide inlet chamber 312 is provided in the middle of the mixing cone body 311, one end of the carbon dioxide inlet chamber 312 is connected to the guide pipe 23 on the carbon dioxide storage tank 22, and the other end of the carbon dioxide inlet chamber 312 is connected to the carbon dioxide buffer chamber 313.

[0093] One embodiment of the present invention, as Figure 6 、 Figure 7A carbon dioxide buffer chamber 313 is provided within the mixing cone body 311. A carbon dioxide injection channel 314 is provided between the carbon dioxide buffer chamber 313 and the gas-carbon dioxide mixing channel 315. The first end of the carbon dioxide injection channel 314 communicates with the carbon dioxide buffer chamber 313, and the second end of the carbon dioxide injection channel 314 communicates with the gas-carbon dioxide mixing channel 315. Liquid carbon dioxide from the carbon dioxide inlet chamber 312 enters the carbon dioxide buffer chamber 313 and then mixes with the high-temperature gas in the gas-carbon dioxide mixing channel 315 through the carbon dioxide injection channel 314. The gas-carbon dioxide mixing channel 315 is evenly distributed along the circumference of the mixing cone body 311. The liquid carbon dioxide absorbs heat, undergoes a liquid-gas phase transition, and expands, performing work, thereby forming a gas-carbon dioxide mixture at a higher pressure.

[0094] Another embodiment of the present invention, as Figure 8 The carbon dioxide buffer chamber 313 forms a conical inner cavity toward the top of the mixing cone body 311, and the carbon dioxide injection channel 314 is evenly arranged along the circumference of the carbon dioxide buffer chamber 313. The first end of the carbon dioxide injection channel 314 is connected to the carbon dioxide buffer chamber 313, and the second end of the carbon dioxide injection channel 314 is in an expanded form and connected to the gas nozzle tail chamber 131. The axial direction of the carbon dioxide injection channel 314 is set at an angle to the axial direction of the mixing cone body 311, and the gas-carbon dioxide mixing channel 315 is evenly arranged along the circumferential direction of the mixing cone body 311.

[0095] The sum of the cross-sectional areas of the second ends of the carbon dioxide injection channels 314 is 1.2 to 2.5 times the cross-sectional area of the carbon dioxide introduction cavity 312 .

[0096] The conical protrusion 3111 guides the high-temperature gas ejected from the gas nozzle through the outer circumference of the mixing cone body to the gas-carbon dioxide mixing channel 315. The liquid carbon dioxide enters the carbon dioxide buffer chamber 313 and then mixes with the high-temperature gas in the gas-carbon dioxide mixing channel 315 through the carbon dioxide injection channel 314, thereby achieving pressurization and improving heat exchange capacity; the gas-carbon dioxide mixture is evenly sprayed from the center of the mixing cone body to the surrounding areas, which can improve the stability of the gas-carbon dioxide mixture airflow and the uniformity of the air pressure, improve the efficiency of the phase change of the gas and carbon dioxide mixture, and improve energy utilization.

[0097] The guide mixing cone 31 is arranged along the axial direction to form a laminar flow guide, and the carbon dioxide injection channel allows the fuel gas to fully contact the carbon dioxide, greatly reducing the formation of mixed gas turbulence, improving the gas mixing effect, and achieving the purpose of stable supercharging.

[0098] Working principle of the gas-fired carbon dioxide gas generator: the fuel storage tank 12 of the gas generating assembly 1 is filled with solid gunpowder, and the gas igniter 11 ignites the solid gunpowder in the fuel storage tank 12 to burn and generate high-temperature gas. The high-temperature gas enters the gas nozzle 13, and the high-temperature gas portion of the gas nozzle 13 is introduced into the carbon dioxide supply assembly 2 through the boosting pipe 14. The carbon dioxide supply assembly 2 introduces the liquid carbon dioxide into the mixing working assembly 3 through the one-way valve 24 and the guide pipe 23 through the boosting airbag 21 or the extrusion piston 25. The liquid carbon dioxide is mixed with the high-temperature gas flowing through the gas-carbon dioxide mixing channel 315 through the carbon dioxide inlet chamber 312, the carbon dioxide buffer chamber 313, and the carbon dioxide injection channel 314 of the guide mixing cone 31 in the mixing working assembly 3. The liquid carbon dioxide absorbs heat and performs phase change to perform work, thereby achieving high-temperature gas pressurization and cooling.

[0099] The contents illustrated in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent modifications of the present invention by those skilled in the art shall fall within the scope defined by the claims attached to this application.

Claims

1. A fuel gas carbon dioxide gas generator, characterized in that: It includes a gas generating component (1), a carbon dioxide supply component (2) and a mixing and working component (3); The gas generating assembly (1) comprises a gas igniter (11), a fuel storage tank (12) and a gas nozzle (13), wherein one end of the fuel storage tank (12) is connected to the gas igniter (11), and the other end of the fuel storage tank (12) is connected to the gas nozzle (13); The carbon dioxide supply assembly (2) comprises a boost pipe (14), a carbon dioxide liquid storage tank (22), a flow guide pipe (23) and a one-way valve (24); one end of the carbon dioxide liquid storage tank (22) is connected to the boost pipe (14), and the other end of the carbon dioxide liquid storage tank (22) is connected to the flow guide pipe (23); the flow guide pipe (23) is provided with a one-way valve (24); the boost pipe (14) is connected to the gas nozzle (13); The gas nozzle (13) is in communication with the mixing and working component (3); The flow guide tube (23) is in communication with the mixing and working component (3); The mixing work component (3) comprises a flow-guiding mixing cone (31) and a mixing chamber (32), wherein the flow-guiding mixing cone (31) is arranged inside the mixing chamber (32), and the flow-guiding mixing cone (31) is arranged axially along the mixing chamber (32); A pressurized air bag (21) or an extrusion piston (25) is provided in the carbon dioxide storage tank (22); The extrusion piston (25) divides the carbon dioxide storage tank (22) into an extrusion chamber (221) and a liquid storage chamber (222); the booster pipe (14) introduces high-temperature combustion gas into the extrusion chamber (221) and pushes the extrusion piston (25) to squeeze the liquid carbon dioxide in the liquid storage chamber (222); The pressurized airbag (21) comprises an airbag (211) and an inflation tube (212). The inflation tube (212) is arranged inside the airbag (211), and the two ends of the inflation tube (212) are respectively connected to the two ends of the airbag (211). The inflation tube (212) is in communication with the pressurized tube (14). A plurality of air guide hole groups are arranged on the airbag (212) from one end in communication with the pressurized tube (14) to the center. The distance between adjacent air guide hole groups increases uniformly from the one end in communication with the pressurized tube (14) to the center. The air guide hole group comprises a plurality of air guide holes (2124) arranged along the circumference of the airbag (212).

2. The fuel gas carbon dioxide gas generator according to claim 1, characterized in that: The guide mixing cone (31) comprises a mixing cone body (311), a carbon dioxide inlet chamber (312), a carbon dioxide buffer chamber (313), a carbon dioxide injection channel (314), and a gas-carbon dioxide mixing channel (315); The mixing cone body (311) is fixed inside the mixing chamber (32), and the mixing cone body (311) protrudes in the direction of the gas nozzle (13) to form a conical protrusion (3111); one end of the carbon dioxide inlet cavity (312) is connected to the guide tube (23), and the other end of the carbon dioxide inlet cavity (312) is connected to the carbon dioxide buffer cavity (313); The carbon dioxide buffer chamber (313) is arranged inside the mixing cone body (311); the first end of the carbon dioxide injection channel (314) is in communication with the carbon dioxide buffer chamber (313); and the second end of the carbon dioxide injection channel (314) is in communication with the gas-carbon dioxide mixing channel (315); the gas-carbon dioxide mixing channel (315) is evenly arranged along the circumferential direction of the mixing cone body (311).

3. The fuel gas carbon dioxide gas generator according to claim 1, characterized in that: The guide mixing cone (31) comprises a mixing cone body (311), a carbon dioxide inlet chamber (312), a carbon dioxide buffer chamber (313), a carbon dioxide injection channel (314), and a gas-carbon dioxide mixing channel (315); The mixing cone body (311) is fixed inside the mixing chamber (32), and the mixing cone body (311) protrudes in the direction of the gas nozzle (13) to form a conical protrusion (3111); one end of the carbon dioxide inlet cavity (312) is connected to the guide tube (23), and the other end of the carbon dioxide inlet cavity (312) is connected to the carbon dioxide buffer cavity (313); The carbon dioxide buffer chamber (313) forms a conical inner cavity toward the top of the mixing cone body (311); a first end of the carbon dioxide injection channel (314) is in communication with the carbon dioxide buffer chamber (313); a second end of the carbon dioxide injection channel (314) is in communication with the gas nozzle tail chamber (131); an axial direction of the carbon dioxide injection channel (314) is arranged at an angle to an axial direction of the mixing cone body (311); and the gas-carbon dioxide mixing channel (315) is evenly arranged along the circumferential direction of the mixing cone body (311).

4. The fuel gas carbon dioxide gas generator according to claim 2 or 3, characterized in that: The sum of the cross-sectional areas of the second ends of the carbon dioxide injection channels (314) is 1.2-2.5 times the cross-sectional area of the carbon dioxide inlet cavity (312).

5. The fuel gas carbon dioxide gas generator according to claim 1, characterized in that: The pressurized airbag (21) further comprises a first inflation tube fixing plate (213), a second inflation tube fixing plate (214), an airbag pressure plate (215), and a liquid guide head (216); the first inflation tube fixing plate (213) comprises a first disc portion (2131) and a first guide fixing portion (2132); the second inflation tube fixing plate (214) comprises a second disc portion (2141), a second guide fixing portion (2142), and an inflation tube fixing portion (2143); the two ends of the interior of the airbag (211) are respectively stretched open by the first disc portion (2131) and the second disc portion (2141); the first guide fixing portion (2132) and the second guide fixing portion (2142) respectively pass through the two ends of the airbag (211); the airbag pressure plate (215) is connected to the first guide fixing portion (2132); and the liquid guide head (216) is connected to the second guide fixing portion (2142); The inflation tube (212) comprises a tube body (2121), an inflation tube locking head (2122), and an inflation tube fixing head (2123). The tube body (2121) is a hollow structure, and an air guide hole (2124) is provided on the tube body (2121). The inflation tube locking head (2122) is provided at one end of the tube body (2121), and the inflation tube fixing head (2123) is provided at the other end of the tube body (2121). The inflation tube fixing head (2123) is fixed to the inflation tube fixing portion (2143). The first inflation tube fixing plate (213) is sleeved on the tube body (2121), and the inflation tube (212) is fixed to one end of the carbon dioxide storage tank (22) via the inflation tube locking head (2122). The tube body (2121) is connected to the booster tube (14).

6. The fuel gas carbon dioxide gas generator according to claim 1 or 5, characterized in that: The expression of the air guide hole diameter is as follows: ； ； Among them, d i is the diameter of the i-th group of air guide holes, A i is the surface area of the i-th group of air guide holes, A c is the cross-sectional area of the inflation tube, n is the number of air guide hole groups, and s is the number of air guide holes in the air guide hole group.

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