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Propellant surplus measuring system and method

A measurement system and propellant technology, applied in the field of propellant residual quantity measurement system, can solve the problems of limited measurement times, immaturity, poor versatility, etc. Effect

Active Publication Date: 2014-10-01
BEIJING INST OF CONTROL ENG
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Problems solved by technology

To sum up, the main problems in space propellant remaining measurement are: high uncertainty of commonly used measurement methods; measurement methods with high degree of certainty have poor versatility; some methods are immature, and their stability and reliability cannot be guaranteed; High-precision methods have a limited number of measurements and cannot be used multiple times

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  • Propellant surplus measuring system and method

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Embodiment Construction

[0029] The system and method for measuring the remaining amount of propellant according to the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

[0030]At present, most of the technologies used for propellant remaining measurement in microgravity rely on the bookkeeping (BK) method of propellant consumption and the basic propellant thermodynamic measurement method (PVT method). It is ±1.63% (the total volume of the storage tank), but the actual error is about 3%. For this reason, on the basis of the existing platform, those skilled in the art adopt the gas injection method as the main measurement method, and the modified PVT method and BK method as the auxiliary measurement methods, and the measurement accuracy can reach ±0.8% (total volume of the storage tank) . However, the measurement accuracy still needs to be improved, and the number of measurements is extremely limited, which can only reach less ...

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Abstract

The invention provides a propellant surplus measuring system. The propellant surplus measuring system comprises a gas cylinder, a pressure sensor, a self-locking valve, a differential pressure gauge and a propellant storage tank. The invention further provides a propellant surplus measuring method. The method comprises the steps of setting the state of the self-locking valve; controlling the self-locking cylinder to enable the initial states of the two gas cylinders and two storage tanks to be consistent; controlling the self-locking valve to discard one gas cylinder, keep the state of another gas cylinder, pressurizing one storage tank and keeping the state of another storage tank, and recording the pressure of the measuring system and the difference value of the temperature gauge; controlling the self-locking valve, and reducing the initial state of the system; and calculating the surplus volume of the propellant according to the recorded pressure, temperature and pressure difference value of the measuring system. By adopting the method provided by the invention, the air-capacitor configuration of a primary gas injection method can be saved, and the measuring times can be improved greatly and can reach up to more than 50 times.

Description

technical field [0001] The invention relates to a propellant residual measurement system and method for efficiently utilizing dual-component propellants, and belongs to the technical field of satellite dual-component propellant systems. Background technique [0002] With the development of satellite technology and the increasingly wide application prospects, especially the use of long-life satellites, higher and higher requirements are put forward for the overall management level of satellites and the efficiency of satellite use. The measurement of satellite propellant remaining amount is an important part of satellite on-orbit management. Since the satellite will end its life once the propellant is exhausted, the working life of the satellite can be effectively managed through accurate measurement of propellant, thus obtaining significant benefits. economic benefits. Due to the particularity of the working environment of the satellite and the limitation of the structure an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F22/02
Inventor 李泽宋涛马云华林震李文唐飞李湘宁张广科樊超张琰成聪毕强
Owner BEIJING INST OF CONTROL ENG
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