Small air pillow pressurization system

A technology of supercharging system and small air pillow, applied in jet propulsion device, rocket engine device, machine/engine, etc., can solve problems such as affecting engine work, early shutdown, air pillow pressure attenuation, etc., to avoid single point failure, guarantee The effect of smooth startup and improved reliability

Active Publication Date: 2014-03-26
BEIJING INST OF ASTRONAUTICAL SYST ENG +1
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AI Technical Summary

Problems solved by technology

This type of vehicle generally has a relatively compact structure, and the volume of the propellant tank and the initial air pillow of the tank is small. With the start of the engine, the propellant flow rate increases

Method used

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  • Small air pillow pressurization system

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Example Embodiment

[0007] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments:

[0008] like figure 1 As mentioned above, the present invention consists of an emergency pressurized gas cylinder 1, a filter 2, a main pressurization solenoid valve 3, an auxiliary pressurization solenoid valve 4, a main pressurization orifice 5, an auxiliary pressurization orifice 6, and a pressurization controller 7 , safety valve 8 and pressure sensor 9, the main booster solenoid valve 3 and the main booster orifice 5 are connected in series to form the main booster control path, and the auxiliary booster solenoid valve 4 and the auxiliary booster orifice 6 are connected in series to form the auxiliary booster control The main booster control passage and the auxiliary booster control passage are connected in parallel, wherein the main booster orifice 5 and the auxiliary booster orifice 6 are connected to the top of the propellant tank, ...

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Abstract

The invention discloses a small air pillow pressurization system. The redundancy design is adopted in the system, and pressurizing magnetic valves are controlled by feedback of storage box pressure under the set timing sequence condition. At the initial stage of starting of an engine, a pressurization controller controls the main pressurizing magnetic valve and the auxiliary pressurizing magnetic valve and monitors the pressure inside a storage box, when the pressure is excessively low, the pressurization controller controls the main pressurizing magnetic valve or the auxiliary pressurizing magnetic valve to be opened and carry out emergent pressurization on the storage box, and therefore the phenomenon that the engine works abnormally due to the fact that the air pillow pressure of the storage box is reduced fast is avoided, the engine can be started smoothly, the single point of failure is avoided, and the reliability of the pressurization system can be effectively improved.

Description

technical field [0001] The invention relates to a small air pillow pressurization system, in particular to a small air pillow storage tank with an emergency start-up function, and belongs to the technical field of propellant management. Background technique [0002] With the development of space transportation, especially the demand for commercial spaceflight, small vehicles that can safely, quickly and maneuverably enter and exit space are one of the important development directions in the future aerospace field. This type of vehicle generally has a relatively compact structure, and the volume of the propellant tank and the initial air pillow of the tank is small. With the start of the engine, the propellant flow rate increases rapidly, which will cause the pressure of the air pillow in the tank to decay rapidly. When the tank When the air pillow pressure is lower than the required lower limit, it may affect the engine operation and even cause premature shutdown. Therefore...

Claims

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Application Information

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IPC IPC(8): F02K9/95
Inventor 满满张立强刘敏周浩洋帅彤刘文川马方超吴姮
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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