A pressure-controlled low-temperature storage tank with an injection device

Abstract

The invention discloses a pressure controlled low temperature storage tank with a jetting device. The pressure controlled low temperature storage tank consists of a tank body, a low temperature circulating pump, a liquid throttle valve, a heat exchanger, a fluid ejector and an exhaust cooling system. The heat exchanger comprises a first heat exchange path and a second heat exchange path in countercurrent arrangement, the tank body, the low temperature circulating pump, the first heat exchange path and the fluid ejector are communicated with each other in order to form a large stream fluid circulation loop, the tank body, and the liquid throttle valve, the second heat exchange path and the exhaust cooling system are communicated with each other in order to form a throttling refrigeration route. The fluid ejector is arranged in the tank body, and the fluid ejector is provided with jet orifices at least in the upper space inside the tank body. The exhaust cooling system includes an ejector, an orthohydrogen-parahydrogen conversion device and an exhaust cooling coil. The pressure controlled low temperature storage tank provided by the invention has the advantages of simple structure, large jet intensity, and good heat exchange efficiency, can effectively eliminate heat leakage of the tank body, and realize good control of the tank pressure, and has good application value and popularization prospect for long-term storage of cryogenic propellants.

Description

technical field [0001] The invention relates to the field of low-temperature propellant storage and fluid management, in particular to a pressure-controlling low-temperature storage tank with an injection device. Background technique [0002] Due to their excellent properties such as high specific impulse, environmental friendliness, and easy availability, cryogenic propellants have been used more and more in the aerospace field. However, the storage temperature of cryogenic propellants is low, and external heat leakage can easily cause the temperature of the fluid to rise and evaporate, which will lead to an increase in the pressure of the tank. In order to ensure safe operation in orbit, the pressure of the cryogenic propellant storage tank must be controlled within a certain range. If the pressure of the tank is too high, it will cause the tank to overpressure and explode, which will bring serious safety hazards; if the pressure of the tank is too low, it will cause the ...

AI Technical Summary

Problems solved by technology

However, the existing thermodynamic exhaust system has a relatively simple structure, which does not consider the reasonable and effective use of low-temperature exhaust, resulting in a large loss of cooling energy

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