Storage tank exhaust device and selection method of storage tank exhaust device
A technology for exhaust devices and storage tanks, which is applied in the direction of aerospace vehicle propulsion system devices, etc., and can solve the problems of not considering gas-liquid separation and large dependence on propellant management devices
Active Publication Date: 2018-03-02
NAT UNIV OF DEFENSE TECH
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[0004] The invention provides a storage tank exhaust device and a selection method of the storage tank exhaust device to solve the technical problem that the existing storage tank exhaust device does not consider gas-liquid separation, which leads to a large dependence on the propellant management device
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[0039] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0040] refer to figure 1 and figure 2 , the preferred embodiment of the present invention provides a storage tank exhaust device 1, which is used to discharge the gas in the storage tank 2. The storage tank exhaust device 1 is a cylinder made of a porous medium material, and the top of the cylinder is in contact with the storage tank. The exhaust hole 3 of the box 2 is connected;
[0041] The outer surface of the porous media material is coated with a non-wetting coating;
[0042] The diameter of the pores in the porous medium material increases gradually along the radial direction of the tank exhaust device 1, so that the liquid flow in the gas-liquid two-phase flow that enters the tank exhaust device 1 flows along the direction of the tank exha...
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The invention discloses a storage tank exhaust device and a type selection method of the storage tank exhaust device. The storage tank exhaust device is used to discharge gas in the storage tank, and the storage tank exhaust device is a cylinder made of a porous medium material , the top of the cylinder is connected with the exhaust hole of the tank; the outer surface of the porous medium material is coated with a non-wetting coating; the diameter of the pores in the porous medium material increases gradually along the radial direction of the tank exhaust device, Therefore, when the gas-liquid two-phase flow in the tank enters the tank exhaust device, the liquid flow in it is discharged along the radial direction of the tank exhaust device under the action of surface tension, and then the gas-liquid two-phase flow is realized. Gas-liquid separation, which solves the technical problem that the existing storage tank exhaust device does not consider gas-liquid separation, which leads to a large dependence on the propellant management device, and reduces the need to rely on the propellant management device to form large bubbles when the existing storage tank is exhausted To achieve the dependence of gas-liquid separation.
Description
technical field [0001] The invention relates to the field of satellite equipment, in particular to a storage tank exhaust device. In addition, the present invention also relates to a type selection method of the storage tank exhaust device. Background technique [0002] When the satellite is in operation, it is often necessary to discharge the gas in the tank to control the pressure in the tank, and the premise of exhausting the tank is that the propellant management device in the tank can realize the gas-liquid separation in the tank, and the propellant tube The gas-liquid separation is mainly achieved by the formation of large bubbles during exhausting, which puts high demands on the design of the propellant management device of the tank. In addition, for the sake of safety, a liquid collection device needs to be installed at the outlet of the vent hole, so as to ensure the cleanliness of the gas path, which adds complexity to the tank piping system. [0003] At present,...
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IPC IPC(8): B64G1/40
Inventor 黄奕勇李光昱陈小前陈勇姚雯韩伟吴宗谕
Owner NAT UNIV OF DEFENSE TECH