High-rigidity propellant management device for large surface tension storage box

Abstract

A high-rigidity propellant management device for a large surface tension storage box comprises a middle bottom, a liquid channel, a gas discharge channel, small collectors of the middle bottom, a gas discharge cup, a large collector of the middle bottom and a bubble trap, wherein one end of an angular collector of the liquid channel is connected with the middle bottom; the other section of the angular collector of the liquid channel is connected with the bubble trap; the bubble trap is fixed at an outlet of the storage box; the large collector of the middle bottom is positioned in the middle of the middle bottom; the small collectors of the middle bottom are distributed at the periphery of the large collector of the middle bottom; the gas discharge channel is placed on the upper portion of the middle bottom; one end of the gas discharge channel is welded to the edge of the middle bottom; and the other end of the gas discharge channel is suspended. The high-rigidity propellant management device of the large surface tension storage box overcomes the technical shortcomings of the existing small-capacity net-type storage box, can carry a large amount of propellant, and is high in reliability; the adaptive capacity of a large satellite is strengthened; propellant which does not clamp gas and meets the requirement on flow can be provided for an engine or a thruster in a microgravity environment; and the high-rigidity propellant management device is used for managing the propellant in the microgravity environment of space.

Description

technical field [0001] The invention relates to a high-rigidity propellant management device for a large-scale surface tension storage tank, which can provide an engine or thruster with air-free propellant meeting flow requirements in a microgravity environment. Background technique [0002] The propellant tank is one of the most important parts of the spacecraft. Its function is to store and manage the propellant. Under the specified flow and acceleration conditions, it provides the engine or thruster with air-free propellant. Its core component is the propellant management device (PMD). The surface tension storage tank is the most widely used propellant storage tank in the world at present, and it is divided into two types: mesh type and plate type. The existing surface tension storage tanks in our country are all mesh type, which use the surface tension of the liquid to collect propellant through the screen, and at the same time prevent the gas from entering the pipeline...

AI Technical Summary

Problems solved by technology

Since the storage tank is a combined storage tank with plate mesh, the management and storage of propellants mainly rely on plate components, and the discharge flow rate is small, which cannot meet the low flow resistance and large flow tasks of the large surface tension tank used on the DFH-4 satellite platform. Demand; ETS-VIII storage tank was developed by PSI for Laura in 2001. Its PMD is composed of four deflectors and a liquid accumulator / bubble trap. The deflector extends from the bottom to the top of the column section

PMD adopts trap-deflector-accumulator structure, which is the most popular form at present, but the inheritance of plate components is poor, and there are difficulties in welding and assembly processes. These are not suitable for the urgent schedule of DFH-4 satellites, and cannot meet the requirements of Propellant management requirements for large storage tanks in my country

It can be seen from this that although some articles have been published abroad in public contributions, these documents are all about the principles and functions of some overall structures and devices of the tank, and there is no description about the detailed structural design of the PMD for the actual tank. As the basis for the design of my country's tanks, it is necessary to carry out detailed structural design work suitable for large tank PMDs according to the actual needs of my country's satellites

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