CN115653788B - Hydrogen peroxide kerosene dual-component gas generator and working method thereof - Google Patents
Hydrogen peroxide kerosene dual-component gas generator and working method thereof Download PDFInfo
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- CN115653788B CN115653788B CN202211683141.9A CN202211683141A CN115653788B CN 115653788 B CN115653788 B CN 115653788B CN 202211683141 A CN202211683141 A CN 202211683141A CN 115653788 B CN115653788 B CN 115653788B
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Abstract
The invention provides a hydrogen peroxide kerosene dual-component gas generator and a working method thereof, wherein the hydrogen peroxide kerosene dual-component gas generator comprises the following components: the technical scheme of the invention can realize repeated ignition for many times, does not need to adopt an electric spark igniter to assist ignition, and has higher safety and economy.
Description
Technical Field
The invention relates to the technical field of rocket engines, in particular to a hydrogen peroxide kerosene dual-component gas generator.
Background
The gas generator is a device which generates combustion gas with certain pressure and temperature as driving working medium. The typical form of the gas generator comprises a rocket engine, a jet engine, a torch igniter and the like, and the gas generator is combined with a tail nozzle and can convert high-temperature gas generated by the tail nozzle into high-speed airflow to be sprayed out so as to push the aircraft to advance.
With the development of liquid propellants, green spontaneous combustion propellants represented by hydrogen peroxide are more and more favored by engineering, and the hydrogen peroxide has the advantages of high density ratio, no toxicity, no pollution, high specific heat, normal-temperature storage, spontaneous combustion and the like, and is very suitable for serving as an oxidant of modern rocket engines. In previous studies, hydrogen peroxide single-component gas generators have been widely used, but their performance lags behind that of N 2 O 4 Unsymmetrical dimethylhydrazine two-component gas generators and large hydrogen peroxide consumption. The hydrogen peroxide-kerosene double-component gas generator can utilize high-temperature oxidant components generated after the hydrogen peroxide is catalytically decomposed to generate spontaneous combustion reaction with the kerosene, so that high-temperature gas is generated for propulsion and ignition, and the hydrogen peroxide-kerosene double-component gas generator has the characteristics of repeated use and repeated ignition, and 90 percent of the performance of the hydrogen peroxide-kerosene gas generator and N 2 O 4 Unsymmetrical dimethylhydrazine is similar.
Disclosure of Invention
The invention aims to solve the problems and provides a hydrogen peroxide and kerosene dual-component gas generator and a working method.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a hydrogen peroxide kerosene dual component gas generator comprising: an upper end cover 1, a catalytic chamber 2 below the end cover, a combustion chamber 3 below the catalytic chamber, and an outlet throat 4 below the combustion chamber 3; the end cover 1, the catalytic chamber 2, the combustion chamber 3 and the outlet throat 4 are detachably connected together;
the end cover 1 comprises a hydrogen peroxide inlet 101 and a hydrogen peroxide upper liquid collecting chamber 102, wherein the hydrogen peroxide inlet 101 is fixedly connected to the center of the top of the end cover 1, and the hydrogen peroxide upper liquid collecting chamber 102 is a cavity in the center of the interior of the end cover; a through hole communicated with the upper hydrogen peroxide liquid collecting chamber 102 is formed in the hydrogen peroxide inlet 101;
a lower hydrogen peroxide liquid collecting chamber 202 is arranged above the inside of the catalysis chamber 2, the lower hydrogen peroxide liquid collecting chamber 202 is a cavity which corresponds to the upper hydrogen peroxide liquid collecting chamber 102 in the upper-lower position and has the same diameter, and the lower hydrogen peroxide liquid collecting chamber 202 and the upper hydrogen peroxide liquid collecting chamber form a hydrogen peroxide liquid collecting chamber; the cavity below the hydrogen peroxide liquid collecting chamber is a catalysis chamber cavity 205, and hydrogen peroxide spray holes 201 are uniformly arranged in the central area of the bottom of the hydrogen peroxide lower liquid collecting chamber 202; a catalytic chamber pressure temperature measuring hole 206 is arranged on the side wall of the catalytic chamber cavity 205, and a catalytic net support 207 for supporting the catalytic net are arranged at the bottom of the catalytic chamber cavity 205;
the combustion chamber 3: the combustion chamber 3 comprises an upper combustion chamber 307, a lower combustion chamber 310 and a trapezoid flow disturbing ring 305 connected between the upper combustion chamber 307 and the lower combustion chamber, the cross section of the trapezoid flow disturbing ring 305 is in a right-angle trapezoid shape, catalytic rear gas injection holes 302 are uniformly distributed in the central area of the upper surface of the upper combustion chamber 307, kerosene injection holes 303 are uniformly distributed among the catalytic rear gas injection holes 302, and the included angle between the outlet direction of the gas injection holes 302 and the normal direction isγ 1 Not equal to 0, the exit direction of the kerosene injection hole 303 and the normal included angle areγ 2 Not equal to 0; a kerosene inlet 301 is arranged on the side surface of the combustion chamber, the kerosene inlet 301 is communicated with a kerosene injection hole 303 through a kerosene conveying pipeline 304, and a combustion chamber pressure measuring and temperature measuring hole 306 is arranged on the outer wall of the lower combustion chamber 310;
the bottom of the end cover and the lower hydrogen peroxide liquid collecting chamber 202 are sealed by a sealing device, and the lower hydrogen peroxide liquid collecting chamber 202 and the upper combustion chamber 307 are sealed by a sealing device.
As a preferred mode of execution,m o the flow rate of hydrogen peroxide injected for the hydrogen peroxide inlet 101,v 0 is the exit characteristic velocity of the gas injection orifice 302,γ 1 is the normal included angle of the outlet of the gas injection hole 302;m f to inject the kerosene flow through the kerosene inlet 301,v f for the post-catalytic gas injection hole 302 exit characteristic velocity,γ 2 the normal included angle of the outlet of the kerosene injection hole 303 is satisfiedm o v o sinγ 1 =m f v f sinγ 2 Post-injection hydrogen peroxide and kerosene two-stream confluence angleδIs 0 degrees.
Preferably, the hydrogen peroxide inlet 101 is used for injecting hydrogen peroxide into the catalytic chamber;
the catalytic chamber 2: for catalytic decomposition of hydrogen peroxide;
the hydrogen peroxide liquid collecting chamber is used for injecting hydrogen peroxide into the catalytic chamber through the hydrogen peroxide spray holes 201 for decomposition;
the combustion chamber 3 is used for the spontaneous combustion reaction of the hydrogen oxide and the kerosene which are subjected to catalytic decomposition in the catalytic chamber;
a kerosene inlet 301 for supplying kerosene to the combustion chamber;
the outlet throat 4 is used to feed the gas produced by the combustion chamber to the application area.
Preferably, the sealing means between the bottom of the end cap and the lower hydrogen peroxide liquid collecting chamber 202 is: an upper catalytic chamber sealing groove 103 at the bottom of the end cover 1 and a lower catalytic chamber sealing groove 203 at the top of the lower hydrogen peroxide liquid collecting chamber 202, wherein the upper catalytic chamber sealing groove 103 is a downward annular bulge, and the lower catalytic chamber sealing groove 203 is a downward annular groove and is correspondingly matched with the upper catalytic chamber sealing groove 103 in a convex-concave manner;
the sealing device between the lower hydrogen peroxide liquid collecting chamber 202 and the upper combustion chamber 307 is as follows: the upper combustion chamber sealing groove 208 at the bottom of the lower hydrogen peroxide liquid collecting chamber 202, the lower combustion chamber sealing groove 308 at the top of the upper combustion chamber 307, and the upper combustion chamber sealing groove 208 is a downward annular bulge; the lower sealing groove 308 of the combustion chamber is a downward annular groove and is correspondingly and convexly matched with the upper sealing groove 208 of the combustion chamber;
the inner diameter of the concave part of each lower sealing groove is smaller than the inner diameter of the bulge of the upper sealing groove matched with the concave part of each lower sealing groove by 0.2mm, the outer diameter of the concave part of each lower sealing groove is larger than the outer diameter of the bulge of the upper sealing groove matched with the concave part of each lower sealing groove by 0.2mm, and the gap between the upper sealing groove and the lower sealing groove matched with the concave part of each lower sealing groove is sealed by the matching of gaskets.
Preferably, the outer edge of the end cap 1 is provided with a plurality of catalytic chamber upper fixing through holes 104 along the circumferential direction,
the outer edge of the catalyst chamber 2 is provided with a plurality of catalyst chamber lower fixing through holes 204 in the circumferential direction,
a plurality of fixing threaded holes 309 are formed in the outer edge of the combustion chamber 3 in the circumferential direction;
bolts are arranged in the fixing threaded holes 309 and penetrate through the lower catalytic chamber fixing through holes 204 and the lower catalytic chamber fixing through holes 204, so that the end cover 1, the catalytic chamber 2 and the combustion chamber 3 are detachably connected.
Preferably, the catalytic mesh support 207 is ring-shaped with a cross-shaped support in the middle.
Preferably, the outlet throat 4 comprises a copper washer 401 and a throat 402, the outlet throat 4 being connected to the combustion chamber 3 by means of a screw thread and being sealed by the copper washer 401, the gas being supplied to the application area by the throat 402.
The invention also provides a working method of the hydrogen peroxide kerosene two-component gas generator, which comprises the following steps:
hydrogen peroxide enters the hydrogen peroxide liquid collecting chamber through the hydrogen peroxide inlet and is injected into the catalytic chamber 205 through the hydrogen peroxide spray holes 201, and the injection pressure P of the hydrogen peroxide at the hydrogen peroxide spray holes 201 i Greater than the pressure P of the catalytic chamber 205 after catalytic decomposition of hydrogen peroxide 1 ，P 1 The hydrogen peroxide is injected into a cavity 205 of the catalytic chamber and then carries out catalytic decomposition reaction with a catalytic net to generate high-temperature mixed gas of water vapor and oxygen with the temperature of about 1000K, the high-temperature mixed gas is injected into a combustion chamber 307 through a catalytic gas injection hole 302, kerosene is injected into the combustion chamber 307 through a kerosene conveying pipeline 304 and a kerosene injection hole 303 from an inlet 301, and the kerosene injection pressure P of the kerosene injection hole 303 is measured by a pressure sensor of a pressure measuring temperature measuring hole 206 of the catalytic chamber f Not less than combustion chamber pressure P 2 Pressure in combustion chamber P 2 Measured by a pressure sensor of a pressure measuring and measuring hole 306 of the combustion chamber; the injected mixed gas is subjected to spontaneous combustion reaction in the combustion chamber 307 to generate fuel gas with main components of water vapor and carbon dioxide, and the trapezoidal turbulent ring 305 plays a role in improving residence time of the fuel gas by forming a reflux area near the trapezoidal turbulent ring 305, so that the spontaneous combustion ignition power is improved; the gas then enters the application scenario via throat 402.
The invention designs a hydrogen peroxide kerosene two-component gas generator, and the propellant in the scheme is environment-friendly and has the traditional propellant N 2 O 4 The unsymmetrical dimethylhydrazine has equivalent performance, and can be ignited by multiple times of spontaneous combustion and reused.
Furthermore, hydrogen peroxide is injected at the top end of the catalytic chamber, a silver catalytic net is arranged in the catalytic chamber, and the injected hydrogen peroxide can be subjected to decomposition reaction with the catalytic net and release heat to generate high-temperature oxidation gas.
Compared with the prior art, the hydrogen peroxide-kerosene two-component gas generator provided by the invention has the following beneficial effects:
(1) The fuel and the oxidant used by the fuel gas generator are adjusted, and the fuel gas generator has the characteristics of no toxicity, no harm and environmental protection of products after complete combustion;
(2) The gas generator adopts a spontaneous combustion ignition mode, and has the characteristics of safety, simple structure and the like compared with an electric spark igniter and a torch igniter.
(3) The combustion chamber based on the double-component gas generator is improved, and the trapezoidal turbulence ring is arranged, so that the characteristics of enhancing ignition and improving combustion efficiency and further improving the performance of the gas generator are achieved. The gasifier has multiple repeat firing capability.
Drawings
Fig. 1 is a schematic view of the overall structure of a hydrogen peroxide-kerosene two-component gas generator according to the present invention.
Fig. 2 is a sectional view of the structure of the hydrogen peroxide-kerosene two-component gas generator of the present invention.
FIG. 3 is an enlarged view of a portion C-C of FIG. 2 of the present invention.
Fig. 4 isbase:Sub>A top viewbase:Sub>A-base:Sub>A of the hydrogen peroxide catalyst chamber of fig. 2 according to the present invention.
FIG. 5 is a cross-sectional view B-B of the combustion chamber of FIG. 2 of the present invention.
Fig. 6 is a schematic view of injection angles of the gas injection holes 302 and the kerosene injection holes 303 during the injection of the catalyzed gas and the kerosene injection in the present invention.
1 is an end cover, 101 is a hydrogen peroxide inlet, 102 is a hydrogen peroxide upper liquid collecting chamber, 103 is a catalyst upper sealing groove, 104 is a catalyst upper fixing through hole, 2 is a catalyst chamber, 201 is a hydrogen peroxide spray hole, 202 is a hydrogen peroxide lower liquid collecting chamber, 203 is a catalyst lower sealing groove, 204 is a catalyst lower fixing through hole, 205 is a catalyst chamber cavity, 206 is a catalyst pressure measuring temperature hole, 207 is a catalyst net support, 208 is a combustion chamber upper sealing groove, 3 is a combustion chamber, 301 is a kerosene inlet, 302 is a catalytic post-combustion gas spray hole, 303 is a kerosene injection hole, 304 is a kerosene conveying pipeline, 305 is a trapezoidal turbulent flow ring, 306 is a combustion chamber pressure measuring temperature hole, 307 is an upper combustion chamber, 308 is a combustion chamber lower sealing groove, 309 is a fixing threaded hole, and 310 is a lower combustion chamber; 4 is the outlet throat, 401 is the red copper washer, 402 is the throat.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
As shown in fig. 1, the present embodiment provides a hydrogen peroxide kerosene two-component gas generator, comprising: an upper end cover 1, a catalytic chamber 2 below the end cover, a combustion chamber 3 below the catalytic chamber, and an outlet throat 4 below the combustion chamber 3; the end cover 1, the catalytic chamber 2, the combustion chamber 3 and the outlet throat 4 are detachably connected together;
as shown in fig. 2, the end cap 1 comprises a hydrogen peroxide inlet 101 and a hydrogen peroxide upper header chamber 102, wherein the hydrogen peroxide inlet 101 is fixedly connected to the center of the top of the end cap 1, and the hydrogen peroxide upper header chamber 102 is a cavity in the center of the interior of the end cap; a through hole communicated with the upper hydrogen peroxide liquid collecting chamber 102 is formed in the hydrogen peroxide inlet 101;
a lower hydrogen peroxide collecting chamber 202 is arranged above the inside of the catalytic chamber 2, the lower hydrogen peroxide collecting chamber 202 is a cavity which corresponds to the upper and lower positions of the upper hydrogen peroxide collecting chamber 102 and has the same diameter, and the lower hydrogen peroxide collecting chamber 202 and the upper hydrogen peroxide collecting chamber form a hydrogen peroxide collecting chamber; the cavity below the hydrogen peroxide liquid collecting chamber is a catalysis chamber cavity 205, and as shown in fig. 4, the hydrogen peroxide spray holes 201 are uniformly arranged in the central area of the bottom of the hydrogen peroxide lower liquid collecting chamber 202; a catalysis chamber pressure measuring hole 206 is arranged on the side wall of the catalysis chamber cavity 205, and a catalysis net support 207 for supporting the catalysis net are arranged at the bottom of the catalysis chamber cavity 205;
the combustion chamber 3: the combustion chamber 3 includes an upper combustion chamber 307 and a lower combustion chamberA combustion chamber 310 and a trapezoidal flow-disturbing ring 305 connected between the two, wherein the cross section of the trapezoidal flow-disturbing ring 305 is a right-angle trapezoid, as shown in FIG. 2; the central area of the upper surface of the upper combustion chamber 307 is evenly distributed with catalytic gas injection holes 302, as shown in fig. 5, the kerosene injection holes 303 are evenly distributed between the catalytic gas injection holes 302, as shown in fig. 6, the outlet direction of the gas injection holes 302 forms an included angle with the normal directionγ 1 Not equal to 0, the outlet direction of the kerosene injection hole 303 and the normal included angle areγ 2 Not equal to 0; a kerosene inlet 301 is arranged on the side surface of the combustion chamber, the kerosene inlet 301 is communicated with a kerosene injection hole 303 through a kerosene conveying pipeline 304, a combustion chamber pressure measuring and temperature measuring hole 306 is arranged on the outer wall of the lower combustion chamber 310,
the bottom of the end cover and the lower hydrogen peroxide liquid collecting chamber 202 are sealed by a sealing device, and the lower hydrogen peroxide liquid collecting chamber 202 and the upper combustion chamber 307 are sealed by a sealing device.
As shown in figure 6 of the drawings,m o the flow rate of hydrogen peroxide injected for the hydrogen peroxide inlet 101,v 0 is the characteristic velocity of the gas injection orifice 302 outlet,γ 1 is the normal included angle of the outlet of the gas injection hole 302;m f to inject the kerosene flow through the kerosene inlet 301,v f for the post-catalytic gas injection orifice 302 exit characteristic velocity,γ 2 the normal included angle of the outlet of the kerosene injection hole 303 is satisfiedm o v o sinγ 1 = m f v f sinγ 2 Post-injection hydrogen peroxide and kerosene two-stream confluence angleδIs 0 degrees.
A hydrogen peroxide inlet 101 for injecting hydrogen peroxide into the catalytic chamber;
the catalytic chamber 2: for catalytic decomposition of hydrogen peroxide;
the hydrogen peroxide liquid collecting chamber is used for injecting hydrogen peroxide into the catalytic chamber through the hydrogen peroxide spray holes 201 for decomposition;
the combustion chamber 3 is used for the spontaneous combustion reaction of the hydrogen oxide and the kerosene which are subjected to catalytic decomposition in the catalytic chamber;
a kerosene inlet 301 for supplying kerosene to the combustion chamber;
the outlet throat 4 is used to feed the gas produced by the combustion chamber to the application area.
The sealing means between the bottom of the end cap and the lower hydrogen peroxide collection chamber 202 is: as shown in fig. 3, the upper sealing groove 103 of the catalyst chamber at the bottom of the end cap 1 is a downward annular protrusion, and the lower sealing groove 203 of the catalyst chamber at the top of the lower hydrogen peroxide collecting chamber 202 is a downward annular groove and is in convex-concave fit with the upper sealing groove 103 of the catalyst chamber;
the sealing device between the lower hydrogen peroxide liquid collecting chamber 202 and the upper combustion chamber 307 is as follows: the upper sealing groove 208 of the combustion chamber at the bottom of the lower hydrogen peroxide liquid collecting chamber 202 and the lower sealing groove 308 of the combustion chamber at the top of the upper combustion chamber 307 are downward annular bulges as shown in fig. 4; the lower sealing groove 308 of the combustion chamber is a downward annular groove and is correspondingly and convexly matched with the upper sealing groove 208 of the combustion chamber;
the inner diameter of the concave part of each lower sealing groove is smaller than the inner diameter of the bulge of the upper sealing groove matched with the concave part of each lower sealing groove by 0.2mm, the outer diameter of the concave part of each lower sealing groove is larger than the outer diameter of the bulge of the upper sealing groove matched with the concave part of each lower sealing groove by 0.2mm, and the gap between the upper sealing groove and the lower sealing groove matched with the concave part of each lower sealing groove is sealed by the matching of gaskets.
The outer edge of the end cover 1 is provided with a plurality of catalytic chamber upper fixing through holes 104 along the circumferential direction,
the outer edge of the catalytic chamber 2 is circumferentially provided with a plurality of catalytic chamber lower fixing through holes 204, as shown in fig. 4;
the outer edge of the combustion chamber 3 is circumferentially provided with a plurality of fixing threaded holes 309, as shown in fig. 3;
bolts are arranged in the fixing threaded holes 309 and penetrate through the lower catalytic chamber fixing through holes 204 and the lower catalytic chamber fixing through holes 204, so that the end cover 1, the catalytic chamber 2 and the combustion chamber 3 are detachably connected.
The catalytic mesh support 207 is ring-shaped with a cross-shaped support in the middle as shown in fig. 4.
The outlet throat 4 comprises a copper washer 401 and a throat 402, the outlet throat 4 being connected to the combustion chamber 3 by means of a screw thread and being sealed by the copper washer 401, the gas being supplied to the application area by the throat 402.
The embodiment also provides a working method of the hydrogen peroxide kerosene two-component gas generator, which comprises the following steps:
hydrogen peroxide enters the hydrogen peroxide liquid collecting chamber through the hydrogen peroxide inlet and is injected into the catalytic chamber 205 through the hydrogen peroxide spray holes 201, and the injection pressure P of the hydrogen peroxide at the hydrogen peroxide spray holes 201 i Is larger than the pressure P of the catalytic chamber 205 after the catalytic decomposition of the hydrogen peroxide 1 ，P 1 The hydrogen peroxide is injected into a cavity 205 of the catalytic chamber and then carries out catalytic decomposition reaction with a catalytic net to generate high-temperature mixed gas of water vapor and oxygen with the temperature of about 1000K, the high-temperature mixed gas is injected into a combustion chamber 307 through a catalytic gas injection hole 302, kerosene is injected into the combustion chamber 307 through a kerosene conveying pipeline 304 and a kerosene injection hole 303 from an inlet 301, and the kerosene injection pressure P of the kerosene injection hole 303 is measured by a pressure sensor of a pressure measuring temperature measuring hole 206 of the catalytic chamber f Not less than combustion chamber pressure P 2 Pressure in combustion chamber P 2 Measured by a pressure sensor of a pressure measuring and measuring hole 306 of the combustion chamber; the injected mixed gas is subjected to spontaneous combustion reaction in the combustion chamber 307 to generate fuel gas with main components of water vapor and carbon dioxide, so that the environment is protected; the trapezoidal turbulence ring 305 plays a role in improving the residence time of fuel gas and improving the self-ignition power; the gas then enters the application scenario via throat 402.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A hydrogen peroxide kerosene two-component gas generator, comprising: an upper end cover (1), a catalytic chamber (2) below the end cover, a combustion chamber (3) below the catalytic chamber, and an outlet throat (4) below the combustion chamber (3); the end cover (1), the catalytic chamber (2), the combustion chamber (3) and the outlet throat (4) are detachably connected together;
the end cover (1) comprises a hydrogen peroxide inlet (101) and a hydrogen peroxide upper liquid collecting chamber (102), the hydrogen peroxide inlet (101) is fixedly connected to the center of the top of the end cover (1), and the hydrogen peroxide upper liquid collecting chamber (102) is a cavity in the center of the interior of the end cover; a through hole communicated with the upper hydrogen peroxide liquid collecting chamber (102) is formed in the hydrogen peroxide inlet (101);
a lower hydrogen peroxide collecting chamber (202) is arranged above the inside of the catalytic chamber (2), the lower hydrogen peroxide collecting chamber (202) is a cavity which corresponds to the upper and lower positions of the upper hydrogen peroxide collecting chamber (102) and has the same diameter, and the lower hydrogen peroxide collecting chamber and the upper hydrogen peroxide collecting chamber form a hydrogen peroxide collecting chamber; the cavity below the hydrogen peroxide liquid collecting chamber is a catalysis chamber cavity (205), and hydrogen peroxide spray holes (201) are uniformly arranged in the central area of the bottom of the hydrogen peroxide lower liquid collecting chamber (202); a catalysis chamber pressure measuring and temperature measuring hole (206) is arranged on the side wall of the catalysis chamber cavity (205), and a catalysis net support (207) for supporting the catalysis net are arranged at the bottom of the catalysis chamber cavity (205);
combustion chamber (3): the combustion chamber (3) comprises an upper combustion chamber (307), a lower combustion chamber (310) and a trapezoid turbulence ring (305) connected between the upper combustion chamber and the lower combustion chamber, the cross section of the trapezoid turbulence ring (305) is in a right trapezoid shape, catalytic rear gas injection holes (302) are uniformly distributed in the central region of the upper surface of the upper combustion chamber (307), kerosene injection holes (303) are uniformly distributed between the catalytic rear gas injection holes (302), and the outlet direction of the catalytic rear gas injection holes (302) and the included angle of the normal direction are formedγ 1 Not equal to 0, the exit direction of the kerosene injection hole (303) and the normal included angle areγ 2 Not equal to 0; a kerosene inlet (301) is formed in the side face of the combustion chamber, the kerosene inlet (301) is communicated with a kerosene injection hole (303) through a kerosene conveying pipeline (304), and a combustion chamber pressure measuring and temperature measuring hole (306) is formed in the outer wall of the lower combustion chamber (310);
the bottom of the end cover and the lower hydrogen peroxide liquid collecting chamber (202) are sealed by a sealing device, and the lower hydrogen peroxide liquid collecting chamber (202) and the upper combustion chamber (307) are sealed by the sealing device.
2. The hydrogen peroxide kerosene two-component gas generator as claimed in claim 1, wherein:m o the flow rate of hydrogen peroxide injected into the hydrogen peroxide inlet (101),v 0 for the outlet characteristic velocity of the catalyzed gas injection orifice (302),γ 1 the included angle of the outlet normal direction of the catalyzed gas injection hole (302);m f for injecting kerosene flow through the kerosene inlet (301),v f for the outlet characteristic velocity of the catalyzed gas injection orifice (302),γ 2 the normal included angle of the outlet of the kerosene injection hole (303) is satisfiedm o v o sinγ 1 = m f v f sin γ 2 Post-injection hydrogen peroxide and kerosene two-stream confluence angleδIs 0 degrees.
3. The hydrogen peroxide kerosene two-component gas generator as claimed in claim 1, wherein:
a hydrogen peroxide inlet (101) for injecting hydrogen peroxide into the catalytic chamber;
catalytic chamber (2): for catalytic decomposition of hydrogen peroxide;
the hydrogen peroxide liquid collecting chamber is used for injecting hydrogen peroxide into the catalytic chamber through a hydrogen peroxide spray hole (201) for decomposition;
the combustion chamber (3) is used for the hydrogen oxide and the kerosene which are subjected to catalytic decomposition in the catalytic chamber to perform spontaneous combustion reaction;
a kerosene inlet (301) for providing kerosene to the combustion chamber;
the outlet throat (4) is used to feed the gas produced by the combustion chamber to the application area.
4. The hydrogen peroxide kerosene two-component gas generator as claimed in claim 1, wherein:
the sealing device between the bottom of the end cover and the lower hydrogen peroxide liquid collecting chamber (202) is as follows: an upper sealing groove (103) of a catalytic chamber at the bottom of the end cover (1) and a lower sealing groove (203) of the catalytic chamber at the top of a lower hydrogen peroxide liquid collecting chamber (202), wherein the upper sealing groove (103) of the catalytic chamber is a downward annular bulge, and the lower sealing groove (203) of the catalytic chamber is a downward annular groove and is in corresponding and convex-concave fit with the upper sealing groove (103) of the catalytic chamber;
the sealing device between the lower hydrogen peroxide liquid collecting chamber (202) and the upper combustion chamber (307) is as follows: the upper sealing groove (208) of the combustion chamber at the bottom of the lower hydrogen peroxide liquid collecting chamber (202), the lower sealing groove (308) of the combustion chamber at the top of the upper combustion chamber (307), and the upper sealing groove (208) of the combustion chamber are downward annular bulges; the lower sealing groove (308) of the combustion chamber is a downward annular groove and is in convex-concave fit with the upper sealing groove (208) of the combustion chamber in a corresponding position;
the inner diameter of the concave part of each lower sealing groove is smaller than the inner diameter of the bulge of the upper sealing groove matched with the concave part of each lower sealing groove by 0.2mm, the outer diameter of the concave part of each lower sealing groove is larger than the outer diameter of the bulge of the upper sealing groove matched with the concave part of each lower sealing groove by 0.2mm, and the gap between the upper sealing groove and the lower sealing groove matched with the concave part of each lower sealing groove is sealed by the matching of gaskets.
5. The hydrogen peroxide kerosene two-component gas generator as claimed in claim 1, wherein:
a plurality of catalytic chamber upper fixing through holes (104) are formed in the outer edge of the end cover (1) along the circumferential direction;
a plurality of lower catalytic chamber fixing through holes (204) are formed in the outer edge of the catalytic chamber (2) along the circumferential direction;
a plurality of fixing threaded holes (309) are formed in the outer edge of the combustion chamber (3) along the circumferential direction;
bolts are arranged in the fixing threaded holes (309) and penetrate through the lower fixing through holes (204) of the catalytic chamber and the lower fixing through holes (204) of the catalytic chamber, so that the end cover (1), the catalytic chamber (2) and the combustion chamber (3) can be detachably connected.
6. A hydrogen peroxide kerosene two-component gasifier according to claim 1, wherein: the catalytic net support (207) is annular and a cross-shaped support is arranged in the middle.
7. The hydrogen peroxide kerosene two-component gas generator as claimed in claim 1, wherein: the outlet throat (4) comprises a red copper gasket (401) and a throat (402), the outlet throat (4) is connected with the combustion chamber (3) through threads and is sealed by the red copper gasket (401), and fuel gas is supplied to an application area through the throat (402).
8. Method of operating a hydrogen peroxide kerosene two-component gas generator according to any of claims 1 to 7, characterized in that:
hydrogen peroxide enters a hydrogen peroxide liquid collecting chamber through a hydrogen peroxide inlet and is injected into a catalytic chamber cavity (205) through a hydrogen peroxide spray hole (201), and the injection pressure P of the hydrogen peroxide in the hydrogen peroxide spray hole (201) i Is higher than the pressure P of the catalytic chamber cavity (205) after the catalytic decomposition of the hydrogen peroxide 1 ，P 1 The hydrogen peroxide is injected into a cavity (205) of the catalytic chamber and then carries out catalytic decomposition reaction with a catalytic net to generate high-temperature mixed gas of water vapor and oxygen with the temperature of about 1000K, the high-temperature mixed gas is injected into an upper combustion chamber (307) through a catalytic gas injection hole (302), kerosene is injected into the upper combustion chamber (307) from a kerosene inlet (301) through a kerosene conveying pipeline (304) through a kerosene injection hole (303), and the kerosene injection pressure P of the kerosene injection hole (303) is measured by a pressure sensor of a pressure measuring and measuring hole (206) of the catalytic chamber f Not less than combustion chamber pressure P 2 Pressure in combustion chamber P 2 Measured by a pressure sensor of a pressure measuring hole (306) of the combustion chamber; the injected mixed gas is subjected to spontaneous combustion reaction in an upper combustion chamber (307) to generate fuel gas with main components of water vapor and carbon dioxide, and the trapezoidal turbulent flow ring (305) plays a role in prolonging the residence time of the fuel gas and improving the spontaneous combustion ignition success rate; the gas then enters the application scenario via a throat (402).
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