A new gas-liquid phase separation management system for ehd space fuel storage tank

Abstract

The invention relates to a novel EHD spatial fuel storage tank gas-liquid phase separation management system. The system comprises a storage tank wall, an exhaust pipe, a liquid discharging / charging hole, a central cylinder composed of an upper cylinder and a lower cylinder, an inner flow guide plate, an outer flow guide plate, an upper tray ring, a lower tray and a positive electrode bar; the upper cylinder and the lower cylinder are fixedly connected up and down by virtue of a plugged or welded inner flow guide plate, and epoxy resin coating is sprayed on the interface between the upper cylinder and the lower cylinder and the circumference surface of the outer side of the lower cylinder; the positive electrode bar is fixedly mounted inside the lower cylinder, the axis of the positive electrode bar is coincided with the axis of the lower cylinder, and the epoxy resin coating is sprayed on the upper circular surface and the lower circular surface of the positive electrode bar; the positive electrode bar is connected with an anode of a power supply, and the circumference wall surface of the lower cylinder is connected with a cathode of the power supply; multiple mm-scale micropores are formed in the circumference wall surfaces of the upper cylinder and the lower cylinder and the inner guide plate; and a capillary screen is arranged between the lower end of the lower cylinder and the liquid discharging / charging hole, and the exhaust pipe is arranged at the upper end corresponding to the liquid discharging / charging hole in the storage tank.

Description

technical field [0001] The invention relates to a novel EHD space fuel storage tank gas-liquid phase separation management system, in particular to a fuel storage tank fluid management system based on an electric field effect and applied in a space microgravity environment. The present invention innovatively utilizes the electrohydrodynamic EHD concept in the space fuel storage tank, replaces the gravity field with a conservative force field formed by an electric field, and effectively strengthens the gas-liquid phase distribution of the fluid working fluid in the space fuel storage tank. Transportation and active control belong to the field of fluid management for on-orbit service. Background technique [0002] With the rapid expansion of the scale of human space development and utilization, in order for spacecraft to perform missions and meet their functional and performance requirements, the demand for fluid working fluid fuel is increasing, and its working cycle is direc...

AI Technical Summary

Problems solved by technology

[0003] The effective management of fluids under microgravity conditions is a complex process. Although domestic and foreign aerospace powers have accumulated rich experience in the design of spacecraft filling tanks and fluid management during normal operation, due to the special environment of microgravity, The filling process of propellant fuel is still very different from that on the ground

In the microgravity environment of space, the gas-liquid phase of the liquid in the storage tank will not be naturally stratified due to the difference in density between the two phases, but under the action of secondary forces such as surface tension, the gas-liquid will be suspended in the storage tank together in an unsteady state. regular distribution, so its exact distribution cannot be predicted

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