A thermodynamic exhaust system with precise temperature response and its control method

Abstract

The invention discloses a thermodynamic exhaust system with precise temperature response and a control method thereof. Multiple sets of temperature sensors are arranged in a storage tank, and electromagnetic valves are installed on all nozzles. On-off of the nozzle, when the equivalent temperature of the local area exceeds the critical saturation temperature, the corresponding nozzle is opened, and the low-temperature fluid flows out from the nozzle to cool the corresponding area, realizing point-to-point precise temperature and pressure control; The difference adopts different temperature response strategies to control the on-off of each nozzle, thereby reducing the work required for the low-temperature circulating pump to pump the propellant, reducing the circulation flow and exhaust loss of the low-temperature propellant, and realizing the protection of the high-temperature area in the tank. Accurate response.

Description

A thermodynamic exhaust system with accurate temperature response and its control method technical field The present invention relates to a kind of thermodynamic exhaust system, particularly to a kind of thermodynamic exhaust system of accurate temperature response and its control method. Background technique Low temperature propellant has the characteristics of high fuel performance, non-toxicity, large specific impulse, etc., and can well meet the payload of spacecraft. and energy density requirements. Cryogenic liquids represented by liquid hydrogen, liquid oxygen, and liquid methane are still the propellants for future space spacecraft of choice. However, low temperature conditions impose more stringent requirements on the thermal insulation of on-orbit tanks. Even well insulated low Warm storage system, the heat leakage of space thermal environment is less than 5W / m 2 , will still cause the local temperature rise of the cryogenic propellant in the tank, ...

AI Technical Summary

Problems solved by technology

However, the traditional TVS system still has the following problems: the fluid sprayed by the spray rod flows out from all nozzles, but only a few or even one nozzle plays a leading role in cooling the high temperature area, resulting in a decrease in pump efficiency and an increase in discharge, resulting in Unnecessary energy loss and propellant loss

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