Gas pressurization combination

Abstract

The invention provides a gas pressurization combination which comprises a gas cylinder assembly and a combination valve, the gas cylinder assembly comprises a gas cylinder body and a force bearing support, the force bearing support is fixed to the gas cylinder body in a composite material winding mode, a thread and a sealing structure are arranged on the outlet side of the gas cylinder assembly, and the gas cylinder assembly is in threaded sealing connection with a gas inlet of the combination valve. The combination valve comprises a center valve body, an inflation valve, a pressure sensor, a safety valve, a pressure reducing valve and an electric explosion valve, the inflation valve, the pressure sensor, the safety valve, the pressure reducing valve and the electric explosion valve are assembled on the center valve body, the center valve body is of a shell structure internally provided with a plurality of cavities, and an air inlet connector and an output connector are arranged on the outer end faces of the two side walls of the center valve body respectively. And the gas cylinder component and the downstream component are hermetically connected through threads respectively. The structure is compact, the enveloping space size is small, the integration property is high, the overall structure layout composition is simple, the product is light, the mechanical property is good, the space utilization rate is high, the reliability is high, the installation maintainability is good, and the cost economy is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of space liquid propulsion power systems, and in particular relates to a gas pressurization combination for launch vehicles, missiles and attitude control power systems of space vehicles. The present invention changes the structural layout and connection method of the pressurization subsystem of the traditional attitude control power system, makes full use of the structural and functional integration characteristics, and integrates the dispersed gas cylinders, charging valves, electric explosion valves, pressure reducing valves, safety valves, pressure sensors and load-bearing brackets into an integrated design. Background Art

[0002] For launch vehicles and spacecraft, they are usually equipped with attitude control power systems to perform rapid and accurate attitude control and adjustment during their operation to achieve their working attitudes such as pitch, yaw, roll, and rotation around the center of mass.

[0003] Traditional liquid bipropellant attitude control power systems are often composed of a pressurization subsystem, a propellant management subsystem, a power subsystem, and a measurement and control subsystem. Each subsystem involves multiple types of single machines with different functions. The subsystems are connected and controlled by pipelines, structural parts, cables, etc., and there are many types and quantities. As a result, the attitude control power system has a complicated structural layout, a large envelope space, poor mechanical properties, low reliability, inconvenient installation and maintenance, and poor cost-effectiveness.

[0004] The existing boost subsystem solution generally connects the dispersed gas cylinders, charging valves, electric explosion valves, pressure reducing valves, safety valves, pressure sensors, load-bearing brackets and other components through pipelines, so that it has the function of boosting the downstream working fluid. The existing solution has poor structural and functional integration properties, which has a great impact on the overall structural layout of the attitude control power system. Summary of the invention

[0005] The technical problem solved by the present invention is to provide a new type of gas booster assembly. The application of the gas booster assembly solves the problems of the original dispersed layout structure, such as the large number and variety of associated pipelines, joints, structural parts, and fasteners, the complicated structural layout, the large envelope space size, the poor mechanical properties, the low reliability, the inconvenient installation and maintenance, and the poor cost-effectiveness.

[0006] The technical solution adopted in the present invention is: a gas booster combination, including a gas cylinder assembly and a combination valve, the gas cylinder assembly including a gas cylinder and a load-bearing bracket, the load-bearing bracket is fixed to the gas cylinder body by winding a composite material, the outlet side of the gas cylinder assembly is provided with a thread and a sealing structure, which is threaded and sealed with the air inlet interface of the combination valve, the combination valve includes a central valve body and an inflation valve, a pressure sensor, a safety valve, a pressure reducing valve and an electric explosion valve assembled on the central valve body, the central valve body is a shell structure with a plurality of cavities inside, the outer end surfaces of the two side walls of the central valve body are respectively provided with an air inlet interface and an output interface, which are respectively sealed and connected with the gas cylinder assembly and the downstream component by threads, the central valve body is provided with an inflation valve installation cavity, a pressure sensor installation cavity, an electric explosion valve installation cavity, a pressure reducing valve installation cavity and a safety valve installation cavity in sequence from the air inlet interface to the output interface, and each valve body installation cavity and the air inlet interface and the output interface are sequentially connected through a gas flow channel.

[0007] Preferably, the air inlet interface is located on the right side of one side wall of the central valve body, and the output interface is located on the left side of the side wall of the central valve body opposite to the air inlet interface.

[0008] Preferably, one end of the inflation valve installation cavity passes through the lower end face of the central valve body and is processed with an internal thread on the end face side, one end of the inflation valve is threadedly sealed with the inflation valve installation cavity, and the other end protrudes from the lower end face of the central valve body; one end of the pressure sensor installation cavity passes through the upper end face of the central valve body and is processed with an internal thread on the end face side, one end of the pressure sensor is threadedly sealed with the pressure sensor installation cavity, and the other end protrudes from the upper end face of the central valve body, and the inflation valve installation cavity and the pressure sensor installation cavity are opposite to each other up and down and are connected through a gas flow channel; adjacent to the inflation valve installation cavity and the pressure sensor installation cavity is the electric explosion valve installation cavity, and a gas flow channel is provided between adjacent cavities. The mounting cavity passes through the upper and lower end surfaces of the central valve body and is processed with internal threads on the end surface side, and the electric explosion valve is threadedly sealed and connected to the electric explosion valve mounting cavity; adjacent to the electric explosion valve mounting cavity is the pressure reducing valve mounting cavity, and a gas flow channel is provided between adjacent cavities, the pressure reducing valve mounting cavity passes through the upper and lower end surfaces of the central valve body and is processed with internal threads on the end surface side, and the pressure reducing valve is threadedly sealed and connected to the pressure reducing valve mounting cavity; the safety valve mounting cavity is perpendicular to the pressure reducing valve mounting cavity, one end of the safety valve mounting cavity passes through the pressure reducing valve mounting cavity, and the other end passes through the left end surface of the central valve body and is processed with internal threads on the left end surface side, one end of the safety valve is threadedly sealed and connected to the safety valve mounting cavity, and the other end protrudes from the left end surface of the central valve body.

[0009] Preferably, the pressure reducing valve installation cavity is a double cavity structure, and the two pressure reducing valve installation cavities are arranged in parallel and connected through a gas flow channel.

[0010] Preferably, the output interface is correspondingly arranged on the side wall of the central valve body corresponding to the position of the second pressure reducing valve installation cavity, and the air inlet interface is correspondingly arranged on the side wall of the central valve body corresponding to the position of the electric explosion valve installation cavity.

[0011] Preferably, the gas cylinder is filled with gas at a predetermined pressure through the inflation valve, and the pressure sensor monitors the pressure inside the gas cylinder in real time. After the gas cylinder is filled to the predetermined pressure, the inflation valve is closed, and during operation, power is turned on to control the electric explosion valve to open. The high-pressure gas in the gas cylinder passes through the electric explosion valve and enters the pressure reducing valve from the gas flow channel inside the central valve body. The high-pressure gas is reduced to a predetermined pressure through the pressure reducing valve and then delivered to the downstream component.

[0012] The beneficial effects of the present invention are as follows: the present invention has a compact structure, a small volume, a small envelope space size, rich functions, and strong integration properties. The application of this combined module can greatly reduce the types and quantities of associated pipes, joints, structural parts, and fasteners in the original dispersed layout structure; the overall structural layout is simple, the product is light, the mechanical properties are good, the space utilization rate is high, the reliability is high, the installation and maintainability are good, and the cost-effectiveness is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a schematic diagram of a gas pressurizing combination structure.

[0014] Figure 2 This is a schematic diagram of the combination valve structure.

[0015] Figure 3 This is the front view of the combination valve.

[0016] Figure 4 It is the side view of the combination valve.

[0017] Figure 5 It is a schematic diagram of the central cross-sectional structure of the central valve body.

[0018] Figure markings: 1-gas cylinder, 2-combination valve, 21-center valve body, 22-inflating valve, 23-pressure sensor, 24-safety valve, 25-pressure reducing valve, 26-electric explosion valve, 27-air inlet interface, 28-output interface, 211-gas flow channel, 212-pressure sensor installation cavity, 213-inflating valve installation cavity, 214-electric explosion valve installation cavity, 215-pressure reducing valve installation cavity, 216-safety valve installation cavity. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] like Figure 1 and Figure 2As shown, a gas booster assembly includes a gas cylinder assembly and a combination valve 2, wherein the gas cylinder assembly includes a gas cylinder 1 and a load-bearing bracket, wherein the load-bearing bracket is fixed to the gas cylinder 1 body by winding a composite material, and a thread and a sealing structure are provided on the outlet side of the gas cylinder assembly, which is threadedly sealed and connected to the gas inlet interface 27 of the combination valve 2, such as Figure 3 and Figure 4 As shown, the combination valve 2 includes a central valve body 21 and an inflation valve 22, a pressure sensor 23, a safety valve 24, a pressure reducing valve 25 and an electric explosion valve 26 assembled on the central valve body 21. The central valve body 21 is a shell structure with multiple cavities inside. The outer end surfaces of the two side walls of the central valve body are respectively provided with an inlet interface 27 and an output interface 28, which are respectively sealed and connected to the gas cylinder assembly and the downstream component through threads. The inlet interface 27 is located on the right side of one side wall of the central valve body 21, and the output interface 28 is located on the left side of the side wall of the central valve body 21 opposite to the inlet interface 27.

[0021] like Figure 5As shown, the central valve body 21 is provided with an inflation valve installation cavity 213, a pressure sensor installation cavity 212, an electric explosion valve installation cavity 214, a pressure reducing valve installation cavity 215 and a safety valve installation cavity 216 in sequence from the air inlet interface 27 to the output interface 28, and each valve body installation cavity and the air inlet interface 27 and the output interface 28 are connected in sequence through the gas flow channel 211. One end of the inflation valve installation cavity 213 passes through the lower end face of the central valve body 21 and is processed with an internal thread on the end face side, one end of the inflation valve 22 is threadedly connected to the inflation valve installation cavity 213 and is equipped with an O-ring and a gasket to achieve sealing, and the other end protrudes from the lower end face of the central valve body 21; one end of the pressure sensor installation cavity 212 passes through the upper end face of the central valve body 21 and is processed with an internal thread on the end face side, one end of the pressure sensor 23 is threadedly connected to the pressure sensor installation cavity 212 and is equipped with an O-ring and a gasket to achieve sealing, and the other end protrudes from the upper end face of the central valve body 21, and the inflation valve installation cavity 213 and the pressure sensor installation cavity 212 are opposite to each other in upper and lower directions and are connected through the gas flow channel 211; the inflation valve installation cavity and The pressure sensor installation cavity is adjacent to the electric explosion valve installation cavity, and a gas flow channel is provided between the adjacent cavities. The electric explosion valve installation cavity 214 passes through the upper and lower end surfaces of the central valve body 21 and is processed with internal threads on the end surface side. The electric explosion valve 26 is threadedly sealed and connected to the electric explosion valve installation cavity 214; the pressure reducing valve installation cavity 215 is adjacent to the electric explosion valve installation cavity 214, and a gas flow channel 211 is provided between the adjacent cavities. The pressure reducing valve installation cavity 215 passes through the upper and lower end surfaces of the central valve body 21 and is processed with internal threads on the end surface side. The pressure reducing valve 25 is threadedly sealed and connected to the pressure reducing valve installation cavity 215. The pressure reducing valve installation cavity 215 is a double cavity structure, and the two pressure reducing valve installation cavities 215 are arranged in parallel and connected through the gas flow channel 211. The output interface 28 is correspondingly arranged on the side wall of the central valve body 21 corresponding to the position of the second pressure reducing valve installation cavity 215, and the air inlet interface 27 is correspondingly arranged on the side wall of the central valve body 21 corresponding to the position of the electric explosion valve installation cavity 214. The safety valve installation cavity 216 is perpendicular to the pressure reducing valve installation cavity 215. One end of the safety valve installation cavity 216 passes through the pressure reducing valve installation cavity 215, and the other end passes through the left end surface of the center valve body 21 and is processed with an internal thread on the left end surface. One end of the safety valve 24 is threadedly sealed with the safety valve installation cavity 216, and the other end protrudes from the left end surface of the center valve body 21.

[0022] The charging valve 22, electric explosion valve 26, pressure reducing valve 25, safety valve 24, and pressure sensor 23 in the combination valve 2 share the same central valve body 21. The air inlet interface 27 and the output interface 28 of the combination valve 2 are both located on the side wall of the central valve body 21. The central valve body 21 is provided with mounting cavities corresponding to the components. The components are fastened to the central valve body 21 by threaded connection. At the same time, a sealing structure is designed at the connection between the components and the central valve body 21 to prevent gas leakage. A gas flow channel 211 is also provided inside the central valve body 21 to ensure the realization of the corresponding functions of each valve.

[0023] The main structural principle of the combination valve 2 is as follows: a charging valve 22 and a pressure sensor 23 are provided in front of the electric explosion valve 26, and both the charging valve 22 and the pressure sensor 23 are connected to the air inlet interface 27 of the combination valve 2 (i.e., the outlet of the gas cylinder 1); the charging valve 22 is used to fill and release gas to the gas cylinder 1, and the pressure sensor 23 is used to monitor the gas pressure inside the gas cylinder 1 (i.e., the air inlet interface 27 of the combination valve 2). A pressure reducing valve 25 is provided after the electric explosion valve 26, and the pressure reducing valve 25 is used to reduce the high-pressure gas in the upstream gas cylinder 1 to the target flow and pressure gas and output it to the downstream. A safety valve 24 is provided at the outlet of the pressure reducing valve 25, and its function is to open and release air when the outlet of the pressure reducing valve 25 is over-pressured to a certain pressure, so as to prevent the failure of the pressure reducing valve 25 from causing failure of downstream components. The electric explosion valve 26 is in a closed form when not detonated, and can reliably isolate the high-pressure gas in the upstream gas cylinder 1 to prevent leakage to the downstream; when working, the electric explosion valve 26 receives a command to open, and the high-pressure gas in the gas cylinder 1 flows through the electric explosion valve 26 and then enters the pressure reducing valve 25, and then flows out to the downstream components after the pressure is reduced and stabilized by the pressure reducing valve 25.

[0024] When in use, the gas cylinder 1 is filled with gas at a predetermined pressure through the inflation valve 22, and the pressure sensor 23 monitors the pressure inside the gas cylinder 1 in real time. After the gas is filled to the predetermined pressure, the inflation valve 22 is closed. When working, the electric explosion valve 26 is powered on to control the opening of the gas cylinder 1, and the high-pressure gas in the gas cylinder 1 enters the pressure reducing valve 25 from the gas flow channel 211 inside the central valve body 21 after passing through the electric explosion valve 26. The high-pressure gas is reduced to a predetermined pressure through the pressure reducing valve 25 and then delivered to the downstream component through the output interface 28.

[0025] The above are specific embodiments of the present invention and the technical principles used. Any modifications and equivalent changes based on the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas booster assembly, characterized in that: The invention comprises a gas cylinder assembly and a combination valve, wherein the gas cylinder assembly comprises a gas cylinder and a load-bearing bracket, wherein the load-bearing bracket is fixed to the gas cylinder body by winding a composite material, wherein a thread and a sealing structure are arranged on the outlet side of the gas cylinder assembly, and the structure is threadedly and sealedly connected to the gas inlet interface of the combination valve, wherein the combination valve comprises a central valve body and an inflation valve, a pressure sensor, a safety valve, a pressure reducing valve and an electric explosion valve assembled on the central valve body, wherein the central valve body is a shell structure provided with a plurality of cavities inside, and an inflation interface and an output interface are respectively arranged on the outer end surfaces of the two side walls of the central valve body, and the centers are respectively sealedly connected to the gas cylinder assembly and the downstream components by threads, and an inflation valve installation cavity, a pressure sensor installation cavity, an electric explosion valve installation cavity, a pressure reducing valve installation cavity and a safety valve installation cavity are arranged in sequence in the direction from the gas inlet interface to the output interface, and each valve body installation cavity and the gas inlet interface and the output interface are sequentially connected by a gas flow channel.

2. A gas pressurizing assembly according to claim 1, characterized in that: The air inlet interface is located on the right side of one side wall of the central valve body, and the output interface is located on the left side of the side wall of the central valve body opposite to the air inlet interface.

3. A gas pressurizing assembly according to claim 1, characterized in that: One end of the inflation valve installation cavity passes through the lower end face of the central valve body and is processed with an internal thread on the end face side, one end of the inflation valve is sealed with the inflation valve installation cavity thread, and the other end protrudes from the lower end face of the central valve body; one end of the pressure sensor installation cavity passes through the upper end face of the central valve body and is processed with an internal thread on the end face side, one end of the pressure sensor is sealed with the pressure sensor installation cavity thread, and the other end protrudes from the upper end face of the central valve body, and the inflation valve installation cavity and the pressure sensor installation cavity are opposite to each other up and down and are connected through a gas flow channel; adjacent to the inflation valve installation cavity and the pressure sensor installation cavity is the electric explosion valve installation cavity, and a gas flow channel is provided between adjacent cavities, and the electric explosion valve installation cavity The upper and lower end surfaces of the center valve body are penetrated and internal threads are processed on the end surface side, and the electric explosion valve is threadedly sealed and connected to the electric explosion valve mounting cavity; adjacent to the electric explosion valve mounting cavity is the pressure reducing valve mounting cavity, and a gas flow channel is provided between adjacent cavities, the pressure reducing valve mounting cavity penetrates the upper and lower end surfaces of the center valve body and internal threads are processed on the end surface side, and the pressure reducing valve is threadedly sealed and connected to the pressure reducing valve mounting cavity; the safety valve mounting cavity is perpendicular to the pressure reducing valve mounting cavity, one end of the safety valve mounting cavity penetrates the pressure reducing valve mounting cavity, and the other end penetrates the left end surface of the center valve body and internal threads are processed on the left end surface side, one end of the safety valve is threadedly sealed and connected to the safety valve mounting cavity, and the other end protrudes from the left end surface of the center valve body.

4. A gas pressurizing assembly according to claim 3, characterized in that: The pressure reducing valve installation cavity is a double cavity structure, and the two pressure reducing valve installation cavities are arranged in parallel and are connected through a gas flow channel.

5. A gas pressurizing assembly according to claim 4, characterized in that: The output interface is correspondingly arranged on the side wall of the central valve body corresponding to the position of the second pressure reducing valve installation cavity, and the air inlet interface is correspondingly arranged on the side wall of the central valve body corresponding to the position of the electric explosion valve installation cavity.

6. A gas pressurizing assembly according to claim 1, characterized in that: The gas cylinder is filled with gas at a predetermined pressure through the charging valve, and the pressure sensor monitors the pressure inside the gas cylinder in real time. After the gas cylinder is filled to the predetermined pressure, the charging valve is closed. During operation, power is turned on to control the electric explosion valve to open, and the high-pressure gas in the gas cylinder enters the pressure reducing valve from the gas flow channel inside the central valve body after passing through the electric explosion valve. The high-pressure gas is reduced to a predetermined pressure through the pressure reducing valve and then transported to the downstream components.

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