阅读说明：本技术 微重力流体管理装置 (Microgravity fluid management device ) 是由 范凯 黄立钠 邱中华 周正潮 朱文杰 刘志杰 庞海红 于 2021-07-27 设计创作，主要内容包括：本发明涉及卫星宇航领域内的一种微重力流体管理装置,包括底座、网式表面张力管理组件和气液相管理腔；所述气液相管理腔包括气液两相贮存腔、外管理腔和内管理腔,所述外管理腔与所述底座连通并通过所述底座排液和加注气液相流体,所述网式表面张力管理组件包括气窗网片、中间层网片以及外层网片,所述气窗网片的泡破点小于所述中间层网片和所述外层网片的泡破点；所述气液两相贮存腔与所述外管理腔通过所述气窗网片连通,所述外管理腔与所述内管理腔通过所述中间层网片连通,所述内管理腔与所述气液两相贮存腔通过所述外层网片连通。本发明有效解决了目前微重力流体管理装置无法通过单接口同时实现纯液相供给和气液相加注功能的问题。(The invention relates to a microgravity fluid management device in the satellite aerospace field, which comprises a base, a net type surface tension management component and a gas-liquid phase management cavity, wherein the base is provided with a plurality of grooves; the gas-liquid phase management cavity comprises a gas-liquid phase storage cavity, an outer management cavity and an inner management cavity, the outer management cavity is communicated with the base and drains liquid and fills gas-liquid phase fluid through the base, the net type surface tension management assembly comprises a louver mesh, a middle layer mesh and an outer layer mesh, and the bubble breaking point of the louver mesh is smaller than that of the middle layer mesh and that of the outer layer mesh; the gas-liquid two-phase storage cavity is communicated with the outer management cavity through the louver mesh, the outer management cavity is communicated with the inner management cavity through the middle layer mesh, and the inner management cavity is communicated with the gas-liquid two-phase storage cavity through the outer layer mesh. The invention effectively solves the problem that the existing microgravity fluid management device can not realize pure liquid phase supply and gas-liquid phase filling functions simultaneously through a single interface.)

1. A microgravity fluid management device comprising a base (1), a mesh surface tension management component (2), and a gas phase management cavity (3);

the gas-liquid phase management cavity (3) comprises a gas-liquid two-phase storage cavity (31), an outer management cavity (32) and an inner management cavity (33), the outer management cavity (32) is communicated with the base (1) and discharges and fills gas-liquid phase fluid through the base (1), the net type surface tension management assembly (2) comprises a louver mesh (21), a middle layer mesh (22) and an outer layer mesh (23), and the bubble breaking point of the louver mesh (31) is smaller than the bubble breaking points of the middle layer mesh (22) and the outer layer mesh (23);

the gas-liquid two-phase storage cavity (31) is communicated with the outer management cavity (32) through the louver mesh (21), the outer management cavity (32) is communicated with the inner management cavity (33) through the middle layer mesh (22), and the inner management cavity (33) is communicated with the gas-liquid two-phase storage cavity (31) through the outer layer mesh (23);

during liquid drainage, the gas-liquid two-phase fluid in the gas-liquid two-phase storage cavity (31) sequentially passes through the outer layer mesh (23) and the middle layer mesh (22) or directly passes through the louver mesh (21) for gas-liquid separation, and only liquid phase fluid flows into the outer management cavity (32) and is discharged through the base (1);

during filling, gas-liquid phase fluid enters the outer management cavity (32) through the base (1), the gas phase fluid flows into the gas-liquid phase storage cavity (31) through the gas window mesh (21), and liquid phase fluid enters the inner management cavity (33) through the middle layer mesh (22), or the liquid phase fluid enters the gas-liquid phase storage cavity (31) through the gas window mesh (21).

2. A microgravity fluid management device according to claim 1, wherein the difference in bubble break point between the louver mesh (21) and the middle layer mesh (22) is equal to or greater than 300Pa, and the difference in bubble break point between the louver mesh (21) and the outer layer mesh (22) is equal to or greater than 300 Pa.

3. A microgravity fluid management device according to claim 2, wherein the bubble point of the intermediate layer mesh (22) is the same or different from the bubble point of the outer layer mesh (23).

4. A microgravity fluid management device according to claim 1, wherein the louver mesh (21) has a mesh area that is 20-70% of the sum of the mesh areas of the intermediate layer mesh (22) and the outer layer mesh (23).

5. A microgravity fluid management device according to claim 1 or 4, wherein the intermediate layer mesh (22) is a wall common to the outer management cavity (32) and the inner management cavity (33).

6. A microgravity fluid management device according to claim 5, wherein the intermediate layer mesh (22) is an L-shaped structure or an arc-shaped structure.

7. A microgravity fluid management device according to claim 6, wherein the middle layer mesh (22) comprises a transverse mesh (221) and a vertical mesh (222), wherein the transverse mesh (221) and the vertical mesh (222) are integrally formed or welded to form an L-shaped structure or an arc-shaped structure.

8. A microgravity fluid management device according to any of claims 5-7, wherein the inner management cavity (33) is plural.

9. A microgravity fluid management device according to claim 1, wherein the mesh surface tension management assembly (2) further comprises a support plate (24), wherein the surface of the support plate (24) is provided with through holes, and the louver mesh (21), the middle layer mesh (22) and the outer layer mesh (23) are all sealed and clamped between the two support plates (24).

10. The microgravity fluid management device of claim 1 wherein the microgravity fluid management device is a metallic material structure or a non-metallic material structure.

Technical Field

The invention relates to the technical field of satellite aerospace, in particular to a microgravity fluid management device.

Background

The microgravity fluid management technology is one of the key technologies in aerospace engineering, and is widely applied to four systems of a space vehicle: a propulsion system, a thermal control system, an environmental control and life support system and a power supply system. Wherein the gas-liquid separation and acquisition technology is the core of microgravity management technology. For example, the storage and supply of propellant in a propulsion system requires that the propellant delivered to the engine is not entrained and has a sufficient flow rate; storage and supply of drinking water in environmental control and life support systems requires water/gas isolation and safe water supply.

Microgravity fluid management also faces new challenges with the rapid development of space exploration activities. For example, to perform very long-term tasks, aircraft require more fuel and astronauts need to stay in life for a long time. This is difficult to achieve with a single carriage and only on-track supplementation can be used. Therefore, the microgravity control device is required to have a function of replenishing the fluid in addition to the function of storing and supplying the fluid.

Mesh-type surface tension management devices are currently important microgravity fluid management devices that achieve fluid management through the retention capabilities of the capillary mesh. The main principle is that the management device is divided into two cavities by the capillary network, and as long as the maintaining capacity criterion is met, a liquid phase can enter a pure liquid cavity from a gas-liquid two-phase cavity, and a gas phase cannot enter the pure liquid cavity. In order to realize the space supplement function, the conventional net type surface tension management device mainly has the practical effect that the capillary tube capacity is required to be reserved because a supplement interface is arranged on one side of a gas-liquid two-phase cavity so as to avoid direct filling through a discharge interface. However, for an aircraft, providing one more interface adds a complete set of piping, control valves, and control systems. Therefore, a new management device is needed to realize the functions of filling and discharging microgravity fluid through a single interface.

The invention discloses a light net type surface tension storage box which comprises an air port, an upper hemispherical end enclosure, a cylindrical section, an anti-shaking cone, an air release cup, a middle bottom clapboard, a middle bottom collector, a collector connecting pipe, a middle collector, an air bubble trap, a liquid port and a lower hemispherical end enclosure, wherein the Chinese invention patent publication number is CN 102991729A; the spherical head and the cylindrical section, the gas port and the upper spherical head, and the liquid port and the lower hemispherical head are respectively welded by argon arc welding, the middle bottom clapboard is welded with the cylindrical section and the lower hemispherical head to divide the storage tank into an upper cabin and a lower cabin, the insole collector is positioned on the middle bottom clapboard, the anti-shaking cone is welded and fixed with the middle bottom clapboard and positioned in the upper cabin of the storage tank, and the collector connecting pipe, the middle collector and the bubble trap are connected to form a propellant management device and are arranged in the lower cabin of the storage tank. The patented technology suffers from the problems associated with the prior art.

Disclosure of Invention

In view of the deficiencies in the prior art, it is an object of the present invention to provide a microgravity fluid management device.

The invention provides a microgravity fluid management device, which comprises a base, a net type surface tension management component and a gas-liquid phase management cavity, wherein the net type surface tension management component is arranged on the base;

the gas-liquid phase management cavity comprises a gas-liquid phase storage cavity, an outer management cavity and an inner management cavity, the outer management cavity is communicated with the base and drains liquid and fills gas-liquid phase fluid through the base, the net type surface tension management assembly comprises a louver mesh, a middle layer mesh and an outer layer mesh, and the bubble breaking point of the louver mesh is smaller than that of the middle layer mesh and that of the outer layer mesh;

the gas-liquid two-phase storage cavity is communicated with the outer management cavity through the louver mesh, the outer management cavity is communicated with the inner management cavity through the middle layer mesh, and the inner management cavity is communicated with the gas-liquid two-phase storage cavity through the outer layer mesh;

during liquid drainage, the gas-liquid two-phase fluid in the gas-liquid two-phase storage cavity sequentially passes through the outer layer mesh and the middle layer mesh, or directly passes through the louver mesh to be subjected to gas-liquid separation, and only the liquid phase fluid flows into the outer management cavity and is discharged through the base;

during filling, gas-liquid phase fluid enters the outer management cavity through the base, the gas-phase fluid flows into the gas-liquid two-phase storage cavity through the louver mesh, and liquid phase fluid enters the inner management cavity through the middle layer mesh or liquid phase fluid enters the gas-liquid two-phase storage cavity through the louver mesh.

In some embodiments, the difference between the bubble breaking points of the louver mesh and the middle mesh is equal to or greater than 300Pa, and the difference between the bubble breaking points of the louver mesh and the outer mesh is equal to or greater than 300 Pa.

In some embodiments, the blister break points of the middle layer mesh and the outer layer mesh are the same or different.

In some embodiments, the louver mesh has a mesh area that is 20% to 70% of the sum of the mesh areas of the intermediate layer mesh and the outer layer mesh.

In some embodiments, the middle layer mesh serves as a wall common to the outer and inner management lumens.

In some embodiments, the intermediate layer mesh is an L-shaped structure or an arc-shaped structure.

In some embodiments, the middle layer mesh comprises a transverse mesh and a vertical mesh, and the transverse mesh and the vertical mesh are integrally formed or welded to form an L-shaped structure or an arc-shaped structure.

In some embodiments, the inner management lumen is multiple.

In some embodiments, the net surface tension management assembly further comprises a support plate, the surface of the support plate is provided with a through hole, and the louver mesh, the middle layer mesh and the outer layer mesh are hermetically clamped between the two support plates.

In some embodiments, the microgravity fluid management device is a metallic material structure or a non-metallic material structure.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the structural design among the cavities and the adoption of the net type surface tension management assembly with different bubble breaking point values, the problem that the pure liquid phase supply function and the gas-liquid phase filling function cannot be simultaneously realized through a single interface in the conventional microgravity fluid management device is effectively solved.

2. According to the invention, through the optimized design of the gas-liquid phase management cavity structure, the pressure of gas-liquid phase fluid on the louver mesh is reduced by increasing the areas of the middle layer mesh and the outer layer mesh, so that the overall safety coefficient of the device is improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a microgravity fluid management device according to the present invention;

FIG. 2 is a schematic view of the microgravity fluid management device of the present invention;

FIG. 3 is a schematic view of the liquid filling operation of the microgravity fluid management device provided by the present invention;

FIG. 4 is a schematic view of a mesh surface tension management assembly in a microgravity fluid management device according to the present invention;

the reference numbers in the figures correspond to the structures:

1-base, 2-net type surface tension management component, 21-louver mesh, 22-middle layer mesh, 221-transverse mesh, 222-vertical mesh, 23-outer layer mesh, 24-bearing plate, 3-gas-liquid phase management cavity, 31-gas-liquid two-phase storage cavity, 32-outer management cavity and 33-inner management cavity.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

Example 1

The invention provides a microgravity fluid management device, as shown in figures 1 to 4, comprising a base 1, a mesh surface tension management assembly 2 and a gas-liquid phase management cavity 3. The base 1 is provided with an inlet and an outlet for gas and liquid phase fluid to enter and discharge, and the gas and liquid phase fluid refers to gas phase fluid, liquid phase fluid and gas and liquid phase fluid. The gas-liquid phase management cavity 3 comprises a gas-liquid two-phase storage cavity 31, an outer management cavity 32 and an inner management cavity 33, wherein the outer management cavity 32 and the inner management cavity 33 are located in the gas-liquid two-phase storage cavity 31, the base 1 is communicated with the outer management cavity 32, external gas-liquid phase fluid directly enters the outer management cavity 32 through the base 1, and liquid phase fluid in the gas-liquid phase management cavity 3 is discharged out of the cavity of the gas-liquid two-phase storage cavity 31 from the outer management cavity 32 through the base 1.

The net type surface tension management component 2 is arranged on the outer management cavity 32 and the inner management cavity 33 and used for realizing the circulation of gas-liquid phase fluid between the cavities, and comprises a louver mesh 21, an intermediate layer mesh 22 and an outer layer mesh 23. The louver mesh 21 is installed on a wall plate of the outer management cavity 32, gas-liquid phase fluid circulation is achieved between the gas-liquid two-phase storage cavity 31 and the outer management cavity 32 through the louver mesh 21, the middle layer mesh 22 is installed between the outer management cavity 32 and the inner management cavity 33 and used for liquid phase fluid circulation between the outer management cavity 32 and the inner management cavity 33, if the outer management cavity 32 and the inner management cavity 33 are provided with a common wall plate, the middle layer mesh 22 is arranged on the common wall plate, if the outer management cavity 32 and the inner management cavity 33 are communicated through a pipeline at a certain distance, the middle layer mesh 22 is arranged in a communicated pipeline, and the outer layer mesh 22 is installed on the wall plate of the inner management cavity 33 and used for liquid phase fluid circulation between the inner management cavity 33 and the gas-liquid two-phase storage cavity 31. Preferably, as shown in fig. 4, the portable air window further comprises a supporting plate 24, through holes are uniformly distributed on the supporting plate 24, and the louver mesh 21, the middle layer mesh 22 and the outer layer mesh 23 are respectively clamped by the two supporting plates 24 in a sealing manner and are connected with the cavity wall plate through the supporting plates 24, so that the operation is convenient and the connection is firm. The bubble breakage points of the louver mesh 21 are lower than those of the intermediate layer mesh 22 and the outer layer mesh 23, respectively. Preferably, the value of the bubble breakage point of the louver mesh 21 lower than the bubble breakage point of the intermediate layer mesh 22 is 300Pa or more, and similarly, the value of the bubble breakage point of the louver mesh 21 lower than the bubble breakage point of the outer layer mesh 23 is 300Pa or more, and the bubble breakage points of the intermediate layer mesh 22 and the outer layer mesh 23 may be the same or different. The requirements of different gas-liquid phase filling flow rates can be met by adjusting the difference value of the bubble breaking points of the louver mesh 21, the middle layer mesh 22 and the outer layer mesh 23.

In the above, the microgravity fluid management device may be formed by welding a metal material compatible with a gas-liquid phase fluid, or may be formed by gluing a non-metal material compatible with a gas-liquid phase fluid.

In the above, the installation angles and the installation positions of the louver mesh 21, the middle layer mesh 22 and the outer layer mesh 23 may be determined according to actual conditions, for example, whether the louver mesh is obliquely arranged or not, the oblique angle and the like may be determined according to actual conditions such as gas-liquid phase flow rate and the like, and the installation positions may be determined according to the requirements of the gas-liquid phase fluid inlet and outlet paths.

The working principle of the invention is explained as follows:

when the microgravity fluid management device of the present invention discharges fluid, referring to fig. 2, path I: the gas-liquid two-phase fluid in the gas-liquid two-phase storage cavity 31 is subjected to gas-liquid separation through the outer layer mesh 23 and then enters the inner management cavity 33, the liquid phase fluid in the inner management cavity 33 enters the outer management cavity 32 through the middle layer mesh 22, and finally is discharged out of the gas-liquid two-phase storage cavity 31 through the base 1. And (3) path II: the gas-liquid two-phase fluid in the gas-liquid two-phase storage chamber 31 directly undergoes gas-liquid separation through the louver mesh 21, enters the outer management chamber 32, and is discharged out of the gas-liquid two-phase storage chamber 31 through the base 1. Before the louver mesh 21 fails and air is fed, the inner part of the outer management cavity 32 is always in a pure liquid phase state, so that the discharged liquid phase is ensured not to be entrained with air.

When the microgravity fluid management device provided by the invention is used for filling, the filling work is divided into single-phase fluid filling and gas-liquid two-phase fluid filling, and the filling work is specifically divided into the following steps: four states of pure liquid phase, pure gas phase, small flow gas-liquid two-phase and large flow gas-liquid two-phase are shown with reference to the attached figure 3:

when pure liquid phase is filled, liquid phase fluid enters the outer management cavity 32 through the interface on the base 1, and liquid adding is realized through two filling paths: the liquid phase fluid enters the inner management cavity 33 through the middle layer mesh 22 and then enters the gas-liquid two-phase storage cavity 31 through the outer layer mesh 23 for storage; the liquid phase fluid in the path IV directly enters the gas-liquid two-phase storage cavity 31 through the louver mesh 21 for storage. Because the liquid phase fluid is always filled in the process, the pure liquid phase can be ensured in the outer management cavity 32 and the inner management cavity 33 all the time.

Filling with pure gas phase: the gas-phase fluid enters the outer management cavity 32 through the interface on the base 1, and at the moment, the gas-phase fluid is aerated through the path IV, namely, the gas-phase fluid directly enters the gas-liquid two-phase storage cavity 31 through the louver mesh 21 to be stored. In the process, gas-phase fluid is filled all the time, and gas is added through the path IV, so that the inner management cavity 33 is ensured to be pure liquid phase all the time.

Small-flow gas-liquid two-phase filling: when the small flow gas-liquid two-phase fluid is filled, the flow resistance of the liquid passing through the net is lower than the bubble breaking point of the air window net piece 21, and at the moment, liquid filling is realized through two filling paths: the path III is that the gas-liquid two-phase fluid firstly enters the inner management cavity 33 after being subjected to gas-liquid separation through the middle layer mesh 22, and then the liquid phase fluid in the inner management cavity 33 enters the gas-liquid two-phase storage cavity 31 through the outer layer mesh 23 for storage; the path IV is a gas-liquid two-phase fluid which is directly subjected to gas-liquid separation by the louver mesh 21 and then enters the gas-liquid two-phase storage chamber 31 for storage. In the process, the functions of the louver mesh 21, the middle layer mesh 22 and the outer layer mesh 23 are air and liquid blocking, so that the inner management cavity 33 is always in a pure liquid phase.

Large-flow gas-liquid two-phase filling: when the large-flow gas-liquid two-phase fluid is filled, the liquid cross-net flow resistance is intermittently higher than the bubble breaking point of the air window net piece 21, and liquid adding and air filling are realized through two filling paths: the path III is that the gas-liquid two-phase fluid enters the inner management cavity 33 after being subjected to gas-liquid separation through the middle layer mesh 22, and then the liquid phase fluid in the inner management cavity 33 enters the gas-liquid two-phase storage cavity 31 through the outer layer mesh 23 for storage; the path IV is an intermittent gas filling mode, the gas-liquid two-phase fluid is subjected to gas-liquid separation through the louver mesh 21, then the liquid phase enters the gas-liquid two-phase storage cavity 31, intermittently, when the gas in the outer management cavity 32 is too much, the contact area of the fluid in the screen is reduced, the flow resistance is further increased, and the gas filling mode is started, at this time, the gas in the gas-liquid two-phase fluid enters the gas-liquid two-phase storage cavity 31 through the louver mesh 21 to be stored. In the process, the gas-liquid flow splitting function of the middle layer mesh 22 and the outer layer mesh 23 is normal, and the gas filling mode works intermittently, so that the inner management cavity 33 is always in a pure liquid phase.

According to the invention, through the structural design among the cavities and the adoption of the net type surface tension management assembly with different bubble breaking point values, the problem that the pure liquid phase supply function and the gas-liquid phase filling function cannot be simultaneously realized through a single interface in the conventional microgravity fluid management device is effectively solved.

Example 2

In this embodiment 2, the gas-liquid phase control chamber is designed optimally based on embodiment 1, and the areas of the middle layer mesh and the outer layer mesh are increased to reduce the pressure of the gas-liquid phase fluid on the louver mesh, thereby improving the reliability of the device. Specifically, the method comprises the following steps:

as shown in fig. 1 to 4, the intermediate layer mesh sheet 22 serves as a common cavity wall plate for both the outer management cavity 32 and the inner management cavity 33, that is, the intermediate layer mesh sheet 22 serves as a side wall plate for the outer management cavity 32 and also serves as a side wall plate for the inner management cavity 33. The outer management cavity 32 and the inner management cavity 33 use the middle layer mesh 22 as a common cavity wall plate, so that the area of the middle layer mesh 22 is increased, the flow rate of liquid phase fluid entering the inner management cavity from the outer management cavity 32 in unit time is improved, the amount of stored gas-liquid phase fluid in the outer management cavity 32 in unit time is reduced, the pressure in the outer management cavity 32 is reduced, indirect protection is further implemented on the air window mesh 21 with a relatively low bubble breaking point in the system, and the service life of the device is prolonged. Preferably, the overall structure of the middle layer mesh 22 is an L-shaped structure or an arc-shaped structure, which further increases the area of the middle layer mesh between the two cavities of the outer management cavity 32 and the inner management cavity 33. The middle layer mesh 22 of the L-shaped structure or the arc-shaped structure comprises a transverse mesh 221 and a vertical mesh 222, the transverse mesh 221 and the vertical mesh 222 are integrally formed or welded to form the middle layer mesh 22 of the L-shaped structure or the arc-shaped structure, and the welding mode is preferably electron beam welding to connect the transverse mesh 221 and the vertical mesh 22. Further, a plurality of inner management cavities 33 communicated with the outer management cavity 32 may be provided, and each of the inner management cavity 33 and the outer management cavity 32 is used as a common cavity wall plate of the inner management cavity 33 and the outer management cavity 32 through the middle layer mesh sheet 22.

Similarly, increasing the mesh area of the outer mesh 23 between the inner management chamber 33 and the gas-liquid two-phase storage chamber 31 within a certain range can indirectly reduce the amount of gas-liquid phase fluid stored in the outer management chamber 32 per unit time, reduce the pressure in the outer management chamber 32, and indirectly protect the louver mesh 21 with a relatively low bubble breakage point in the system.

In the microgravity fluid management device, the total area of the louver mesh pieces 21 is 20-70% of the sum of the areas of the middle layer mesh piece 22 and the outer layer mesh piece 23, and the effect is better.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.