阅读说明：本技术 一种固液混合式燃气增压系统及其控制方法 (Solid-liquid mixed type fuel gas pressurization system and control method thereof ) 是由 周明龙 张舜禹 姜丹丹 任建军 岳文骏 郭涵婧 翟艳鹏 于 2020-12-29 设计创作，主要内容包括：本发明涉及推进剂贮箱增压领域内的一种固液混合式燃气增压系统及其控制方法,包括固体燃气增压模块、液体燃气填充模块以及发动机燃料贮箱；所述固体燃气增压模块、所述液体燃气填充模块以及发动机燃料贮箱依次连通；所述固体燃气增压模块产生燃气并通入所述液体燃气填充模块内,所述液体燃气填充模块受到通入燃气的压力并产生高温燃气,所述高温燃气流入下游的所述发动机燃料贮箱内。本发明固液混合式燃气增压系统复杂度低,可靠性高,节省了增压系统在航天姿轨控动力系统中的体积。(The invention relates to a solid-liquid mixed gas pressurization system and a control method thereof in the field of pressurization of a propellant storage tank, and the solid-liquid mixed gas pressurization system comprises a solid gas pressurization module, a liquid gas filling module and an engine fuel storage tank; the solid fuel gas pressurizing module, the liquid fuel gas filling module and the engine fuel storage tank are communicated in sequence; the solid fuel gas pressurizing module generates fuel gas and leads the fuel gas into the liquid fuel gas filling module, the liquid fuel gas filling module receives the pressure of the led fuel gas and generates high-temperature fuel gas, and the high-temperature fuel gas flows into the engine fuel storage tank at the downstream. The solid-liquid mixed gas pressurization system is low in complexity and high in reliability, and the volume of the pressurization system in an aerospace attitude and orbit control power system is saved.)

1. The solid-liquid mixed gas pressurization system is characterized by comprising a solid gas pressurization module (100), a liquid gas filling module (200) and an engine fuel storage tank (300);

the solid fuel gas pressurizing module (100), the liquid fuel gas filling module (200) and the engine fuel storage tank (300) are communicated in sequence;

the solid fuel gas pressurizing module (100) generates fuel gas and leads the fuel gas into the liquid fuel gas filling module (200), the liquid fuel gas filling module (200) receives the pressure of the led fuel gas and generates high-temperature fuel gas, and the high-temperature fuel gas flows into the downstream engine fuel storage tank (300).

2. The solid-liquid hybrid gas pressurization system according to claim 1, characterized in that the solid gas pressurization module (100) comprises a solid gas generator (101), a pressurized gas cylinder (102) and a pressure reducing valve (103), the solid gas generator (101), the pressurized gas cylinder (102) and the pressure reducing valve (103) are communicated in sequence, and the pressure reducing valve (103) is communicated with the liquid gas filling module (200).

3. The solid-liquid hybrid gas boosting system according to claim 2, wherein the liquid gas filling module (200) comprises a unit fuel tank (201), a flow controller (202), and a liquid gas generator (203), the unit fuel tank (201), the flow controller (202), and the liquid gas generator (203) are sequentially communicated, the unit fuel tank (201) is communicated with the pressure reducing valve (103), and the liquid gas generator (203) is communicated with the engine fuel tank (300).

4. The solid-liquid hybrid gas boosting system according to claim 1, wherein the engine fuel tank (300) is provided with a pressure sensor.

5. The solid-liquid hybrid gas supercharging system according to claim 4, wherein the number of the engine fuel tanks (300) is plural, and the plural engine fuel tanks (300) are connected in parallel.

6. The solid-liquid hybrid gas pressurization system according to any one of claims 1 to 5, wherein a plurality of sets of the liquid gas filling modules (200) are provided between the solid gas pressurization module (100) and the engine fuel tank (300), and the plurality of sets of the liquid gas filling modules (200) are connected in series in sequence.

7. A control method of a solid-liquid mixed gas pressurization system, characterized in that the solid-liquid mixed gas pressurization system according to any one of claims 1 to 6 is adopted, and the method comprises the following steps:

step A, establishing the initial pressure of the system: the solid fuel gas pressurizing module (100) generates fuel gas to be introduced into the liquid fuel gas filling module (200), and the liquid fuel gas filling module (200) generates high-temperature fuel gas to be introduced into the engine fuel storage tank (300) after receiving the pressure of the introduced fuel gas, so that the engine fuel storage tank (300) reaches preset pressure;

and step B, completing and locking system pressure: after the engine fuel storage tank (300) reaches a preset pressure, the liquid fuel gas filling module (200) flows to a pipeline of the engine fuel storage tank (300) to be locked, the fuel gas of the solid fuel gas pressurizing module (100) is continuously introduced into the fuel gas filling module (200) and reaches the preset pressure, the solid fuel gas pressurizing module (100) flows to the pipeline of the fuel gas filling module (200) to be locked, and the solid fuel gas pressurizing module (100) continuously generates fuel gas to enable a system of the solid fuel gas pressurizing module to reach the preset pressure and keep the preset pressure;

c, unlocking and releasing system pressure: when the attitude/rail control engine works, the pipeline of the liquid fuel filling module (200) flowing to the engine fuel storage tank (300) and the pipeline of the solid fuel pressurization module (100) flowing to the liquid fuel filling module (200) are sequentially unlocked, and the engine fuel storage tank (300) obtains high-temperature fuel gas through the solid fuel pressurization module (100) and the liquid fuel filling module (200) and supplies fuel to the attitude/rail control engine at a system preset pressure.

8. The control method of the solid-liquid hybrid gas supercharging system according to claim 7, wherein in step a, the process of establishing the initial system pressure is:

step A-1, the solid fuel gas generator (101) generates fuel gas to charge the pressurized fuel gas cylinder (102), the pressure of the pressurized fuel gas cylinder (102) is increased, so that the fuel gas flows into the unit fuel storage tank (201) through the pressure reducing valve (103);

step A-2, the propellant in the single-unit fuel storage tank (201) flows into the liquid fuel gas generator (203) through the flow control valve (202) under the pushing of the pressure of the inlet fuel gas, and the liquid fuel gas generator (203) generates high-temperature fuel gas;

and step A-3, the high-temperature fuel gas generated by the liquid fuel gas generator (203) flows into the engine fuel storage tank (300) to complete the establishment of the initial pressure of the system.

9. The method for controlling a solid-liquid hybrid gas supercharging system according to claim 7, wherein in step B, the process of completing and locking the system pressure is:

step B-1, when the pressure of the engine fuel storage tank (300) reaches a preset pressure, the pressure between the single component fuel storage tank (201) and the liquid gas generator (203) rises and reaches the preset pressure, and the flow control valve (202) is locked;

step B-2, after the flow control valve (202) is locked, the single-component fuel storage tank (201) is locked by the pressure reducing valve (102) after the gas sent out by the pressurized gas cylinder (102) reaches a preset pressure;

and step B-3, after the pressure reducing valve (102) is locked, the gas generated by the solid gas generator (101) enables the pressurized gas cylinder (102) to reach a preset pressure, and the system pressure is finished and kept in a locking state.

10. The control method of the solid-liquid hybrid gas supercharging system according to claim 7, wherein in step C, the procedure of unlocking and releasing the system pressure is as follows:

step C-1, when the attitude/rail control engine works, the engine fuel storage tank (300) supplies fuel to the attitude/rail control engine, the system pressure of the engine fuel storage tank (300) is reduced, and the flow control valve (202) is unlocked;

step C-2, after the flow control valve (202) is unlocked, the liquid gas generator (203) obtains the propellant supplied by the unit fuel storage tank (201) to generate high-temperature gas to be introduced into the sender fuel storage tank (300), the pressure of the unit fuel storage tank (201) is reduced, and the pressure reducing valve (103) is unlocked;

and C-3, after the pressure reducing valve (103) is unlocked, the pressurized gas cylinder (102) conveys gas into the single-component fuel storage tank (201), and the solid gas generator (101) works and generates gas to be conveyed into the single-component fuel storage tank (201).

Technical Field

The invention relates to the field of pressurization of a propellant storage tank, in particular to a solid-liquid mixed gas pressurization system and a control method thereof.

Background

The attitude and orbit control power system is one of the key subsystems of the spacecraft, mainly provides control force and control moment for attitude stabilization and control, orbit transfer and orbit correction of various spacecrafts in the flight process, and is widely applied to important spacecrafts such as satellites, spacecrafts, missiles, carrier rockets, deep space detectors and the like. The method has the characteristics of quick response, convenient control and the like. The normal attitude and orbit control power system is operated by providing pressure for a fuel storage tank by a pressurization system, pushing fuel in the fuel storage tank to enter an attitude and orbit control engine control valve at a certain pressure, entering an engine combustion chamber to react when the control valve is opened, and finally spraying out through a tail nozzle to generate thrust. Because the volume and the mass of the rest engines are generally smaller except the volume and the mass of the individual orbit control engines in the attitude and orbit control power system, the main mass and the volume of the whole attitude and orbit control power system are concentrated on a supercharging system, a propellant storage tank and the engine of the engine.

At present, a conventional typical attitude and orbit control power system adopts a high-pressure gas constant-pressure extrusion type pressurization system to push a fuel storage tank to complete fuel supply of the whole attitude and orbit control power system, in the high-pressure gas extrusion type supply system, a high-pressure gas path mainly comprises a gas cylinder, a guide pipe, a multi-way pipe, an inflation valve, an electric explosion valve, a high-pressure sensor, a relevant support and the like, for the whole system, particularly for an attitude and orbit control system for bombs, the gas cylinder of the high-pressure gas extrusion type pressurization system occupies larger mass and space of the system, and meanwhile, due to the high pressure in the gas path, the connection and the sealing of the gas cylinder are also subjected to severe reliability examination. And for some space products, the extrusion type pressurization system has higher requirements on storage and quick response capability, only fuel filling is generally completed in a long storage stage, high-pressure gas in the extrusion type pressurization system generally needs to be filled before injection, part of the extrusion type pressurization system regularly checks and supplements the high-pressure gas after the gas filling, and the response speed is lower during emergency injection.

Some researchers want to replace a high-pressure gas extrusion type pressurization system with a liquid gas pressurization system to reduce the mass of the gas pressurization system of the engine in an attitude and orbit control power system and reduce the volume of the gas pressurization system of the engine, but although the volume of the conventional single-stage liquid gas pressurization system is reduced compared with that of the high-pressure gas extrusion type pressurization system, the pressure amplification storage tank in the system is usually large in structural mass so as to generate enough area difference to complete pressure amplification, and therefore the mass of the whole gas pressurization scheme is not obviously optimized compared with that of the high-pressure gas pressurization scheme.

The search of the prior art shows that Chinese invention patent publication No. CN106194500A discloses a three-in-one gas pressurization system applied to a liquid rocket, which comprises a helium-hydrogen cylinder (1), an oxygen cylinder (2), a flow control unit and a catalytic bed (5); the helium and hydrogen cylinder (1) stores mixed gas of helium and hydrogen in advance; oxygen is stored in the oxygen cylinder (2); the two gas cylinders control the output flow of gas in the gas cylinders through the flow control unit, the output mixed gas of helium, hydrogen and oxygen passes through a catalytic bed gas and releases heat, and the helium, water vapor and the residual oxygen after reaction are heated enter the storage tank for pressurization. (5) Carrying out catalytic reaction, and generating water vapor after the reaction of the oxygen and the hydrogen. The invention still has the problems of large occupied space, large volume and the like.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a solid-liquid mixed gas pressurization system and a control method thereof.

The invention provides a solid-liquid mixed gas pressurization system which comprises a solid gas pressurization module, a liquid gas filling module and an engine fuel storage tank, wherein the solid gas pressurization module is arranged on the engine fuel storage tank;

the solid fuel gas pressurizing module, the liquid fuel gas filling module and the engine fuel storage tank are communicated in sequence;

the solid fuel gas pressurizing module generates fuel gas and leads the fuel gas into the liquid fuel gas filling module, the liquid fuel gas filling module receives the pressure of the led fuel gas and generates high-temperature fuel gas, and the high-temperature fuel gas flows into the engine fuel storage tank at the downstream.

In some embodiments, the solid gas pressurization module comprises a solid gas generator, a pressurized gas cylinder and a pressure reducing valve, the solid gas generator, the pressurized gas cylinder and the pressure reducing valve are sequentially communicated, and the pressure reducing valve is communicated with the liquid gas filling module.

In some embodiments, the liquid fuel fill module includes a single component fuel tank, a flow controller, and a liquid gas generator, the single component fuel tank, the flow controller, and the liquid gas generator being in communication in sequence, the single component fuel tank being in communication with the pressure relief valve, and the liquid gas generator being in communication with the engine fuel tank.

In some embodiments, the engine fuel reservoir is provided with a pressure sensor.

In some embodiments, a plurality of sets of the liquid fuel gas filling modules are arranged between the solid fuel gas pressurizing module and the engine fuel storage tank, and the plurality of sets of the liquid fuel gas filling modules are sequentially connected in series.

In some embodiments, the engine fuel reservoir is a plurality of the engine fuel reservoirs connected in parallel.

The invention also provides a control method of the solid-liquid mixed gas pressurization system, and the solid-liquid mixed gas pressurization system comprises the following steps:

step A, establishing the initial pressure of the system: the solid fuel gas pressurizing module generates fuel gas and leads the fuel gas into the liquid fuel gas filling module, and the liquid fuel gas filling module generates high-temperature fuel gas and leads the high-temperature fuel gas into the engine fuel storage tank after receiving the pressure of the introduced fuel gas, so that the engine fuel storage tank reaches the preset pressure;

and step B, completing and locking system pressure: after the engine fuel storage tank reaches a preset pressure, the liquid fuel gas filling module flows to a pipeline of the engine fuel storage tank to be locked, the fuel gas of the solid fuel gas pressurizing module is continuously introduced into the fuel gas filling module and is enabled to reach the preset pressure, the solid fuel gas pressurizing module flows to the pipeline of the fuel gas filling module to be locked, and the solid fuel gas pressurizing module continuously generates fuel gas to enable a system of the solid fuel gas pressurizing module to reach the preset pressure and keep the preset pressure;

c, unlocking and releasing system pressure: when the attitude/rail control engine works, the liquid fuel filling module flows to the pipeline of the engine fuel storage tank and the solid fuel pressurization module flows to the pipeline of the liquid fuel filling module to be sequentially unlocked, and the engine fuel storage tank obtains high-temperature fuel gas through the solid fuel pressurization module and the liquid fuel filling module and supplies fuel to the attitude/rail control engine at the preset pressure of the system.

In some embodiments, the procedure of the step a, the initial pressure establishment of the system is as follows:

step A-1, the solid gas generator generates gas to be filled into the pressurized gas cylinder, and the pressure of the pressurized gas cylinder is increased to enable the gas to flow into the single-component fuel storage tank through the pressure reducing valve;

step A-2, the propellant in the single-unit fuel storage tank flows into the liquid fuel gas generator through the flow control valve under the pushing of the pressure of the entering fuel gas, and the liquid fuel gas generator generates high-temperature fuel gas;

and step A-3, enabling high-temperature fuel gas generated by the liquid fuel gas generator to flow into the engine fuel storage tank to complete the establishment of the initial pressure of the system.

In some embodiments, in step B, the procedure of completing and locking the system pressure is:

step B-1, when the fuel storage tank of the engine reaches the preset pressure, the pressure between the single component fuel storage tank and the liquid fuel gas generator is increased and reaches the preset pressure, and the flow control valve is locked;

b-2, after the flow control valve is locked, the pressure reducing valve is locked after the gas sent out from the single component fuel storage tank through the pressurized gas cylinder reaches a preset pressure;

and step B-3, after the pressure reducing valve is locked, the gas generated by the solid gas generator enables the pressure-increasing gas cylinder to reach a preset pressure, and the system pressure is finished and kept in a locking state.

In some embodiments, in step C, the procedure of unlocking and releasing the system pressure is as follows:

step C-1, when the attitude/rail control engine works, the engine fuel storage tank supplies fuel to the attitude/rail control engine, the pressure of the engine fuel storage tank system is reduced, and the flow control valve is unlocked;

step C-2, after the flow control valve is unlocked, the liquid fuel gas generator obtains the propellant supplied by the single component fuel storage tank to generate high-temperature fuel gas, the high-temperature fuel gas is introduced into the sender fuel storage tank, the pressure of the single component fuel storage tank is reduced, and the pressure reducing valve is unlocked;

and C-3, after the pressure reducing valve is unlocked, the pressurized gas cylinder conveys gas into the single-component fuel storage tank, and the solid gas generator works and generates gas to be conveyed into the single-component fuel storage tank.

Compared with the prior art, the invention has the following beneficial effects:

1. the solid-liquid mixed gas pressurization system is low in complexity and high in reliability, and the volume of the pressurization system in an aerospace attitude and orbit control power system is saved.

2. The solid fuel gas pressurization module is used as the first-stage subsystem of the system, so that the direct gas flow can be realized, the gas supplementing speed is high, the output pressure precision is high, and the system has the advantages of quick response, accurate pressure output and normal-pressure storage.

3. According to the invention, through the optimized design of the liquid fuel gas filling module and the engine fuel storage tank, the space utilization rate of the system is improved, and the normal-pressure storage capacity and the quick response capacity of the system are improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic diagram of the overall structure of the solid-liquid mixed gas supercharging system of the present invention;

wherein the symbols in the drawings are

100-solid gas pressurization module, 101-solid gas generator, 102-pressurization gas cylinder, 103-pressure reducing valve, 200-liquid gas filling module, 201-single-component fuel storage tank, 202-flow controller, 203-liquid gas generator and 300-engine fuel storage tank.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

Example 1

The invention actually provides a solid-liquid mixed gas pressurization system, as shown in fig. 1, which comprises a solid gas pressurization module 100, a liquid gas filling module 200 and an engine fuel storage tank 300, wherein the solid gas pressurization module 100, the liquid gas filling module 200 and the engine fuel storage tank 300 are sequentially communicated through pipelines. The solid fuel gas pressurizing module 100 generates fuel gas and supplies the fuel gas into the liquid fuel gas filling module 200, the liquid fuel gas filling module 200 receives the pressure of the supplied fuel gas and generates high-temperature fuel gas, and the high-temperature fuel gas flows into the downstream engine fuel storage tank 300.

The solid gas pressurization module 100 comprises a solid gas generator 101, a pressurized gas cylinder 102 and a pressure reducing valve 103, wherein the solid gas generator 101, the pressurized gas cylinder 102 and the pressure reducing valve 103 are communicated in sequence. The liquid fuel gas filling module 200 comprises a single-component fuel tank 201, a flow controller 202 and a liquid fuel gas generator 203, wherein the single-component fuel tank 201, the flow controller 202 and the liquid fuel gas generator 203 are communicated in sequence. Wherein the mono-component fuel tank 201 is in communication with the pressure reducing valve 103 and the liquid gas generator 203 is in communication with the engine fuel tank 300. Preferably, engine fuel reservoir 300 is provided with a pressure sensor for sensing the pressure within engine fuel reservoir 300 and feeding it back to the control system. The engine fuel storage tank 300 is provided with one or more rail-controlled engines and a plurality of docking interfaces for attitude-controlled engines.

The working principle of the solid-liquid mixed gas pressurization system is as follows:

when the system starts to operate, the solid gas generator 101 generates gas to be filled into the pressurized gas cylinder 102, the gas flows out of the pressurized gas cylinder 102 due to low initial system pressure, then flows through the pressure reducing valve 103 to flow into the single unit storage tank 201 at the middle stream, the single unit storage tank 201 conveys propellant after receiving the pressure of the entering gas, the propellant flows into the liquid gas generator 203 through the flow control valve 202, the liquid gas generator 203 generates high-temperature gas and conveys the high-temperature gas into the engine fuel storage tank 300 at the lower stream, and the initial pressure of the system is established. After the pressure in the engine fuel storage tank 300 reaches the preset value, the flow control valve 202 is locked when the pressure at the downstream of the flow control valve 202 reaches the locking pressure, after the flow control valve 202 is locked, the single unit fuel storage tank 201 continuously obtains the fuel gas and reaches the preset pressure, the pressure of the gas at the downstream of the pressure reducing valve 103 is increased to the locking pressure to lock the pressure reducing valve 103, and the fuel gas generated by the solid fuel gas generator 101 does not flow into the pressurized fuel gas cylinder 102 any more and then flows into the pressurized fuel gas cylinder 102 due to the locking of the pressure reducing valve, and is stored in the pressurized fuel gas cylinder 102, and at the moment, the. After the system pressure build-up is completed, when the attitude/orbit control engine works, the flow control valve 202 and the pressure reducing valve 103 are sequentially unlocked, the propellant in the single-unit fuel storage tank flows into the liquid fuel generator 203 to generate high-temperature fuel gas and flows into the engine fuel storage tank 300, and the engine fuel storage tank 300 supplies fuel to the orbit control engine and/or the attitude control engine at the pressure set by the system. When the engine stops working, the pressure behind the pressure reducing valve and the flow control valve is gradually increased, so that the flow control valve and the pressure reducing valve are sequentially locked, the system stops working, and the next time the engine works is waited. The solid-liquid mixed gas pressurization system is low in complexity and high in reliability, and the volume of the pressurization system in an aerospace attitude and orbit control power system is saved. In addition, the solid fuel gas pressurization module is used as a first-stage subsystem of the system, so that the direct gas flow can be realized, the gas supplementing speed is high, the output pressure precision is high, and the system has the advantages of quick response, accurate pressure output and normal-pressure storage.

Example 2

The embodiment 2 is formed on the basis of the embodiment 1, and the liquid fuel gas filling module and the engine fuel storage tank are optimally designed, so that the space utilization rate of the system is improved, and the normal-pressure storage capacity and the quick response capacity of the system are improved. Specifically, the method comprises the following steps:

as shown in fig. 1, the liquid gas filling modules 200 located between the solid gas pressurizing module 100 and the engine fuel tank 300 have groups, and preferably a series relationship between the groups of liquid gas filling modules 200.

Preferably, the engine fuel reservoir 300 is included in a plurality, preferably 2-4, of the systems. Multiple engine fuel tanks 300 may be in parallel communication.

Example 3

Embodiment 3 is a method for controlling a solid-liquid mixed gas supercharging system formed on the basis of embodiment 1 or embodiment 2, and as shown in fig. 1, the method for controlling a solid-liquid mixed gas supercharging system according to any one of embodiments 1 and 2 is adopted, and the method for controlling a solid-liquid mixed gas supercharging system includes the steps of:

step A, establishing the initial pressure of the system: the solid fuel gas pressurizing module 100 generates fuel gas to be introduced into the liquid fuel gas filling module 200, and the liquid fuel gas filling module 200 generates high-temperature fuel gas to be introduced into the engine fuel storage tank 300 after receiving the pressure of the introduced fuel gas, so that the engine fuel storage tank 300 reaches a preset pressure. Specifically, the method comprises the following steps:

step A-1, gas generated by a solid gas generator 101 is filled into a pressurized gas cylinder 102, and the pressure of the pressurized gas cylinder 102 is increased, so that the gas flows into a single-component fuel storage tank 201 through a pressure reducing valve 103;

step A-2, the propellant in the single-unit fuel storage tank 201 flows into the liquid fuel gas generator 203 through the flow control valve 202 under the pushing of the pressure of the entering fuel gas, and the liquid fuel gas generator 203 generates high-temperature fuel gas;

step a-3, the high temperature fuel gas generated by the liquid fuel gas generator 203 flows into the engine fuel storage tank 300, completing the establishment of the initial pressure of the system.

And step B, completing and locking system pressure: after the engine fuel storage tank 300 reaches the preset pressure, the liquid fuel gas filling module 200 flows to the pipeline of the engine fuel storage tank 300 to be locked, the fuel gas of the solid fuel gas pressurizing module 100 is continuously introduced into the fuel gas filling module 200 and is enabled to reach the preset pressure, the solid fuel gas pressurizing module 100 flows to the pipeline of the fuel gas filling module 200 to be locked, and the solid fuel gas pressurizing module 100 continuously generates fuel gas to enable the system to reach the preset pressure and keep the preset pressure. Specifically, the method comprises the following steps:

step B-1, after the engine fuel storage tank 300 reaches the preset pressure, the pressure between the single-component fuel storage tank 201 and the liquid gas generator 203 rises and reaches the preset pressure, and the flow control valve 202 is locked;

step B-2, after the flow control valve 202 is locked, the single-component fuel storage tank 201 is locked by the pressure reducing valve 102 after the gas sent out by the pressurized gas cylinder 102 reaches a preset pressure;

and step B-3, after the pressure reducing valve 102 is locked, the gas generated by the solid gas generator 101 enables the pressurized gas cylinder 102 to reach the preset pressure, and the system pressure is finished and kept in a locking state.

C, unlocking and releasing system pressure: when the attitude/rail control engine works, a pipeline of the liquid gas filling module 200 flowing to the engine fuel storage tank 300 and a pipeline of the solid gas pressurizing module 100 flowing to the liquid gas filling module 200 are sequentially unlocked, and the engine fuel storage tank 300 obtains high-temperature gas through the solid gas pressurizing module 100 and the liquid gas filling module 200 and supplies fuel to the attitude/rail control engine at a system preset pressure. Specifically, the method comprises the following steps:

step C-1, when the attitude/rail control engine works, the engine fuel storage tank 300 supplies fuel to the attitude/rail control engine, the system pressure of the engine fuel storage tank 300 is reduced, and the flow control valve 202 is unlocked;

step C-2, after the flow control valve 202 is unlocked, the liquid fuel gas generator 203 obtains a propeller supplied by the single-component fuel storage tank 201 to generate high-temperature fuel gas, the high-temperature fuel gas is introduced into the sender fuel storage tank 300, the pressure of the single-component fuel storage tank 201 is reduced, and the pressure reducing valve 103 is unlocked;

and step C-3, after the pressure reducing valve 103 is unlocked, the pressurized gas cylinder 102 conveys gas into the single-component fuel storage tank 201, the solid gas generator 101 works and generates gas to be conveyed into the single-component fuel storage tank 201, and the engine fuel storage tank 300 supplies fuel to the attitude/rail air engine at preset pressure.

When the engine stops working, the pressure behind the pressure reducing valve and the flow control valve is gradually increased, so that the flow control valve and the pressure reducing valve are sequentially locked, the system stops working, and the next time the engine works is waited.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.