Dual-purpose steam generator for space and ground

Abstract

The invention discloses a dual-purpose steam generator for space and ground. The bottom end of an accumulator is provided with a liquid injection port. The liquid injection port is connected with a flow controller through a three-way valve, and the flow controller is connected with a pipeline heater through a solenoid valve. The pipeline heater is connected with a test liquid pool through a pipeline. A thermocouple is arranged in the pipeline. The value of flow of the flow controller is set through a data processor, and the temperature of steam is measured in real time through the thermocoupleand the value of the temperature is transmitted to the data processor. The data processor performs PID control on the heater to achieve steam output in stable temperature. The outlet temperature of asteam generator is not affected by the outlet pressure, and the source power is completely dependent on the steam generator. The generator is not affected by ground gravity, and can be applied well under space microgravity conditions. The generator has been successfully used in a steam production and injection system of a space evaporation and condensation scientific experiment device of China'sfirst cargo spacecraft (TZ-1).

Description

technical field [0001] The invention belongs to the technical field of steam generating equipment, and in particular relates to a steam generating system in a space microgravity environment. Background technique [0002] Parameters such as steam temperature, pressure, and flow rate have an important impact on the accuracy of the condensation test. On the ground, general steam generators have a certain degree of superheat, which requires the steam generator system to include a liquid heater, a gas-liquid separator and a superheater. In order to output steam at a stable temperature, a water spray desuperheater or a heat recovery desuperheater is generally installed after the superheater. [0003] In the microgravity environment of space, steam that is relatively easy to realize on the ground will encounter certain difficulties in space. First of all, ground liquid heating devices cannot be applied to space. Due to the influence of gravity, the steam generated by boiling on ...

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Problems solved by technology

In addition, in industrial production, when several devices are running at the same time, if the steam generated by some devices cannot be used for a suitable purpose, it will cause energy waste, especially the superheated or saturated steam after heat exchange. As a result, it cannot be effectively used. If the direct mixing method is used for mixing, due to the fluctuation of steam pressure or temperature, this will cause the equipment to be frequently impacted by pressure and thermal stress caused by these fluctuations, which will cause great harm to safe production.

[0004] There is no superheated steam generator specially designed for space microgravity environment and ground gravity environment in the prior art. Therefore, how to develop a superheated steam generator with simple system, light weight, and high temperature accuracy and flow accuracy, It is of great practical significance to be applied in space microgravity environment and ground gravity environment

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