CN102518938A

CN102518938A - Flow deflector of plate-type propellant management device

Info

Publication number: CN102518938A
Application number: CN2011104304888A
Authority: CN
Inventors: 李永; 胡齐; 魏延明; 潘海林; 姚灿; 林星荣; 庄保堂; 冯春兰; 郭欣羽
Original assignee: Beijing Institute of Control Engineering
Current assignee: Beijing Institute of Control Engineering
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-06-27
Anticipated expiration: 2031-12-20
Also published as: CN102518938B

Abstract

The invention relates to a flow deflector of a plate-type propellant management device, a liquid outlet is arranged on the flow deflector (1) close to an internal surface (2) of a container casing, the flow deflector (1) and the internal surface (2) of the container casing are parallel; in the microgravity environment, liquid under the effect of surface tension is capable of conveying along a crack formed between the flow deflector (1) and the internal surface (2) of the container casing, liquid bands are symmetrically distributed at two sides of the flow deflector (1), the flow deflector (1) is in a band plate-type structure, the proportion of plate width of the flow deflector (1) to the internal diameter of the container is 2:35. The flow deflector of the invention has the advantages of high reliability, light weight and good expansibility.

Description

A kind of guide plate of board-like propellant management device

Technical field

The present invention relates to a kind of propellant management device, be specially adapted to Propellant Management under the space microgravity environment.

Background technique

Surface tension propellant tank is widely used on the various astrovehicles such as satellite, airship, space station, carrier rocket with its high reliability and long lifetime characteristics under weightlessness.The core technology of surface tension propellant tank is its inner propellant management device (being called for short PMD).Board-like propellant management device belongs to the advanced management apparatus reliably of a new generation.The target of guide plate design is to design one of reliability height, board-like PMD core component in light weight, simple in structure.

At present; The PMD of employed surface tension propellant tank is the net formula on China's satellite; Adopting screen cloth is that capillary element is collected propellant agent, and by pipeline propellant agent is transported to the liquid mouth end of surface tension propellant tank, does not use guide plate transfer management propellant agent at home as yet.But the employed guide plate of most of in the world board-like PMD belongs to vertical arranged type guide plate, and there are some shortcomings in such guide plate: structural strength is low, and processing technology and installation difficulty are big, is difficult for being connected with hydraulic accumulator.

Summary of the invention

Technical problem to be solved by this invention is: overcome the deficiency of existing technology, the guide plate of the board-like propellant management device of a kind of reliability height, light weight, favorable expandability is provided.

A kind of guide plate of board-like propellant management device, said guide plate arrange near said tank inner walls face and extend to liquid outlet always that said guide plate is parallel with said tank inner walls face; In microgravity environment; Liquid is under surface tension effects; Can be along the crack transmission that forms between said guide plate and the said tank inner walls face; The liquid band that form to be symmetrically distributed in said guide plate both sides, said guide plate be banded plank frame, and the wide and ratio tank internal diameter of the plate of said guide plate is 2: 35.

Said guide plate is carried out flanging handle, make said guide plate form a groove structure; The flanging angle is 45 °, and the wide ratio of flanging height and plate is 1: 10.

At the two ends up and down of guide plate six mounting holes are set respectively.

The present invention compared with prior art has a bit following:

(1) guide plate of the present invention has mainly adopted brand-new plank frame form, and structural strength is big, and reliability is high, and adaptability is strong, is prone to be connected with hydraulic accumulator;

(2) deflector structure of the present invention is simple, light weight;

(3) guide plate of the present invention can carry out adaptability revision according to board-like propellant management device physical dimension, and its volume extensibility is good;

(4) guide plate of the present invention can effectively be restrained rocking of liquid, improves the precision of the attitude control of satellite.

Description of drawings

Fig. 1 is guide plate project organization figure of the present invention, and Fig. 1 a is a plan view, and Fig. 1 b is a plan view, and Fig. 1 c is the A-A sectional view, Fig. 1 d be B to or C to view;

Fig. 2 is at guide plate liquid distribution schematic representation in early stage in life-span;

Fig. 3 is at middle of life guide plate liquid distribution schematic representation;

Fig. 4 is at end of lifetime guide plate liquid distribution schematic representation.

Embodiment

As shown in Figure 1, guide plate 1 is selected banded plank frame form for use, and with said tank inner walls face 2 parallel placements, i.e. parallel type guide plate.In microgravity environment, liquid can form the liquid band that is symmetrically distributed along the crack transmission that forms between guide plate and the tank inner walls face in the guide plate both sides under surface tension effects.Guide plate can guarantee sufficient transmission speed when stable state, when unsteady state, also can guarantee enough transmission speeds, and cutout and liquid strap clamp gas can not take place, and recovers stable at short notice.Said guide plate can effectively be realized gas-liquid separation under microgravity environment, the water conservancy diversion transmission performance with hold fluidity can be good.

Clearance distance size between said guide plate 1 and the said tank inner walls face 2 is the said guide plate transmission of influence and holds one of key factor of fluidity ability.If the too small said guide plate transmittability of clearance distance is not enough; If clearance distance is excessive, the fluid power power of holding of said guide plate is not enough, and then also can cause said guide plate transmittability not enough.Reasonably design the clearance distance between said guide plate and the said tank inner walls face through optimizing.Choosing of this distance is relevant with the tank internal diameter, and it is following that this distance and the ratio of internal diameter are chosen scheme: as internal diameter φ during greater than 800mm, ratio is 1: 100; When internal diameter φ was not more than 800mm, ratio was 1: 50.

The plate of said guide plate is wide to be to influence said guide plate transmission and hold one of key factor of fluidity ability.If plate is wide too small, the liquid storage content that makes said guide plate is reduced, and then cause the transmittability of said guide plate not enough; If plate is wide excessive, will increase the weight of board-like full management PMD.So it is roomy little through optimizing the plate that has reasonably designed said guide plate.Choosing that plate is wide is relevant with the tank internal diameter.Plate wide with ratio internal diameter be 2: 35.

If said guide plate is a slate configuration, its structural strength is more weak.Take all factors into consideration the structural strength requirement, said guide plate has been carried out the flanging optimization process, strengthened the structural strength of said guide plate widely.The angle of flanging 4 is 45 °, and the wide ratio of flanging height and plate is 1: 10.Said guide plate is carried out after flanging handles; Said guide plate just forms a groove structure; This groove structure becomes another paths of said guide plate transmission propellant agent, and said guide plate can hold and stay more propellants, and its propellant agent transmittability is further improved.

All beaten six at the two ends of guide plate and be uniformly distributed with mounting hole 3, so that the installing and fixing of guide plate.

Guide plate 1 is connected with hydraulic accumulator 6 forms board-like full management PMD core, realizes liquid is managed entirely.Four guide plates are arranged in+X ,-X ,+Y ,-the Y four direction on, protect when protecting carrying out the position, north and south with the thing position, can guarantee to have at least a guide plate can be submerged in the propellant agent, play gas-liquid separation and transmit the effect of propellant agent.

At the tank beginning of lifetime, under microgravity environment, liquid be not in the state of sinking to the bottom in the tank, and guide plate is immersed in the liquid, and is as shown in Figure 2.Along with liquid constantly is consumed, hydraulic accumulator 6 inner cones expose liquid level, and liquid is near tank inner walls surface distributed, and is as shown in Figure 3, and liquid is given hydraulic accumulator 6 topping ups along guide plate under surface tension effects.

At the tank end of lifetime, under microgravity environment, liquid holds basically stays zone and hydraulic accumulator 6 zones between guide plate and the tank shell wall side, as shown in Figure 4.Along with liquid in the hydraulic accumulator 6 is discharged basically, the liquid that is distributed in the tank shell wall side is transferred to board-like PMD bottom along guide plate and gives the hydraulic accumulator topping up under surface tension effects.Treat to pass through when liquid is discharged once more in the hydraulic accumulator 6 guide plate and give hydraulic accumulator 6 topping ups, liquid is constantly given hydraulic accumulator 6 topping ups through guide plate so repeatedly.

Claims

1. the guide plate of a board-like propellant management device is characterized in that: said guide plate (1) arranges near said tank inner walls face (2) and extends to liquid outlet always that said guide plate (1) is parallel with said tank inner walls face (2); In microgravity environment; Liquid is under surface tension effects; Can be along the crack transmission that forms between said guide plate (1) and the said tank inner walls face (2); The liquid band that form to be symmetrically distributed in said guide plate (1) both sides, said guide plate (1) be banded plank frame, and the wide and ratio tank internal diameter of the plate of said guide plate (1) is 2: 35.

2. guide plate as claimed in claim 1 is characterized in that: said guide plate (1) is carried out flanging handle, make said guide plate (1) form a groove structure; The flanging angle is 45 °, and the wide ratio of flanging height and plate is 1: 10.

3. guide plate as claimed in claim 1 is characterized in that: at the two ends up and down of guide plate six mounting holes are set respectively.