A gas-liquid separator suitable for different flight attitude angles

Abstract

The application relates to a gas-liquid separator suitable for different flight attitude angles, which comprises a gas-liquid separator shell, an inlet arranged at the upper portion of the shell, an inlet section and an inlet taper section connected in sequence at the inlet, a liquid outlet arranged at the lower portion of the shell, a liquid outlet pipe connected with the liquid outlet, a side wall of the liquid outlet pipe tangent to the inner wall of the gas-liquid separator shell, and the direction of the liquid outlet pipe being the same as the rotation direction of the gas in the gas-liquid separator; a conical support arranged in the shell and fixedly connected with the bottom of the shell; a semi-permeable membrane covering the outer side of the conical support; and a gas outlet at the bottom of the shell corresponding to the bottom of the conical support. The application realizes high gas-liquid separation efficiency and effectively reduces separation instability caused by flight attitude change by deeply analyzing the influence mechanism of flight attitude angle change on gas-liquid two-phase flow behavior and separation effect, optimizing and improving the internal structure and flow channel arrangement mode of the separator.

Description

Technical Field

[0001] This invention belongs to the field of aerospace engineering technology and relates to the effective separation technology of gas-liquid mixtures in aircraft, specifically a gas-liquid separator suitable for different flight attitude angles. Background Technology

[0002] In the rapid development of aerospace engineering, the efficient and stable operation of vapor compression cycle systems is one of the key factors ensuring aircraft performance and safety. However, during long-duration flights or in complex and variable flight environments, the vapor compression cycle process often produces gas-liquid mixtures, highlighting the growing importance of this issue. Because aircraft experience various attitude angle changes during missions, such as pitch, yaw, and roll, the internal flow field characteristics of traditional gas-liquid separators change significantly, severely impacting their usability. Summary of the Invention

[0003] This invention proposes a gas-liquid separator suitable for different flight attitude angles. By deeply analyzing the influence mechanism of flight attitude angle changes on the gas-liquid two-phase flow behavior and separation effect, the internal structure and flow channel arrangement of the separator are optimized and improved. The aim is to maintain high gas-liquid separation efficiency regardless of the flight attitude angle and effectively reduce separation instability caused by changes in flight attitude.

[0004] The technical solution of the present invention to solve the above problems is:

[0005] This invention proposes a gas-liquid separator suitable for different flight attitude angles, which is unique in that:

[0006] The device includes a gas-liquid separator housing. An inlet is located on the upper part of the side of the housing, with an inlet section and a tapered inlet section connected sequentially. An outlet is located on the lower part of the side of the housing, connected to an outlet pipe. The side wall of the outlet pipe is tangent to the inner wall of the housing, and the direction of the outlet pipe is the same as the swirling direction of the gas inside the gas-liquid separator to ensure smooth liquid flow. A conical support is located inside the housing, fixedly connected to the bottom of the housing. A semi-permeable membrane covers the outer surface of the conical support and is fixed to it. An outlet is located at the bottom of the housing, corresponding to the bottom of the conical support.

[0007] Furthermore, the inlet tapering section is a converging nozzle used to accelerate the liquid-containing gas, causing the liquid in the liquid-containing gas to flow along the inner wall of the gas-liquid separator shell.

[0008] Furthermore, one end of the inlet section is connected to the smaller end of the inlet tapering section, and the other end of the inlet section is connected to the inlet on the side of the gas-liquid separator shell, and enters tangentially along the gas-liquid separator shell; the inlet section is set obliquely downward, with the lower end connected to the inlet on the side of the gas-liquid separator shell, which is used to guide the liquid-containing gas from the upper part of the gas-liquid separator to the lower part of the gas-liquid separator. The oblique downward angle is determined by the type of working fluid in the system to ensure that the liquid-containing gas can obtain a suitable downward velocity and ensure uniform flow.

[0009] Furthermore, the conical support has a fixed base at its bottom, which is sealed to the bottom surface inside the gas-liquid separator housing to form a separation chamber. The conical support and the semi-permeable membrane divide the inside of the gas-liquid separator housing into a liquid-containing chamber and a pure gas chamber.

[0010] Furthermore, the taper of the conical support is adjusted by the aspect ratio of the liquid-containing cavity and the permeability per unit area of ​​the semi-permeable membrane.

[0011] Furthermore, the liquid-containing cavity is a closed space formed by the outer shell of the gas-liquid separator and the outer side of the conical support. During the flow of liquid-containing gas, the cross-sectional area of ​​the liquid-containing cavity changes. When the gas passes through the semi-permeable membrane on the conical support, the flow rate of the liquid-containing gas can be kept constant, so that the surface of the semi-permeable membrane can be uniformly permeable during the gas-liquid separation process.

[0012] Furthermore, the air outlet at the bottom of the gas-liquid separator housing is connected to an air outlet pipe, and the air outlet is exactly opposite to the center of the fixed base.

[0013] Furthermore, the semipermeable membrane is a liquid-blocking and gas-permeable membrane, which achieves liquid blocking and gas permeability based on the pressure difference across the membrane according to the difference between the diameters of liquid molecules and gas molecules.

[0014] Furthermore, the liquid outlet of the gas-liquid separator shell is connected to a liquid outlet pipe, which is tangent to the inner wall of the gas-liquid separator shell, and the direction of the liquid outlet pipe is the same as the swirling direction of the gas inside the gas-liquid separator.

[0015] Furthermore, the length-to-diameter ratio of the gas-liquid separator shell is adjusted by the inlet tapering section to accelerate the liquid-containing gas and the flow rate of the liquid-containing gas.

[0016] Advantages of this invention:

[0017] The gas-liquid separator provided in this application mainly uses centrifugal force for separation, and is not affected by gravity or other force fields. The gas-liquid separator provided in this application can achieve gas-liquid separation at different placement angles. The gas-liquid separator provided in this application has a simple structure, no moving parts, small size, light weight, and is easy to carry and install. The gas-liquid separator provided by this invention, which is suitable for different flight attitude angles, has a unique adaptive structure and functional mechanism design that breaks through the technical limitations of traditional separators that are only suitable for specific flight conditions. It particularly emphasizes and realizes the adaptive capability to various flight attitude angles. Attached Figure Description

[0018] Figure 1 This is a perspective view of the external shape of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the conical support and semi-permeable membrane of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Entrance tapering section,

[0023] 2-Import section,

[0024] 3-Gas-liquid separator housing,

[0025] 4-Discharge tube,

[0026] 5-Conical support,

[0027] 6-Exhaust pipe,

[0028] 7- Semipermeable membrane. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0030] See Figures 1 to 3A gas-liquid separator suitable for different flight attitude angles includes a gas-liquid separator housing 3. An inlet is located on the upper part of the side of the gas-liquid separator housing 3, with an inlet section 2 and an inlet tapering section 1 connected sequentially at the inlet. An outlet is located on the lower part of the side of the gas-liquid separator housing 3, and the outlet is connected to an outlet pipe 4. The side wall of the outlet pipe 4 is tangent to the inner wall of the gas-liquid separator housing 3, and the direction of the outlet pipe 4 is the same as the swirling direction of the gas inside the gas-liquid separator to ensure smooth liquid outflow. A conical support 5 is located inside the gas-liquid separator housing 3 and is fixed to the bottom of the gas-liquid separator housing 3. The outer surface of the conical support 5 is covered with a semi-permeable membrane. An air outlet is located at the bottom of the gas-liquid separator housing 3, corresponding to the bottom of the conical support 5.

[0031] Specifically, see Figure 1 and Figure 2 The inlet tapering section 1 is a contraction nozzle. The function of the contraction nozzle is to accelerate the liquid-containing gas, so that the liquid in the liquid-containing gas flows along the inner wall of the gas-liquid separator shell 3.

[0032] Specifically, see Figure 1 and Figure 2 One end of the inlet section 2 is connected to the smaller inner diameter end of the inlet tapering section 1, and the other end of the inlet section 2 is connected to the inlet on the side of the gas-liquid separator shell 3 and enters tangentially along the gas-liquid separator shell 3. At the same time, the inlet section 2 is set obliquely downward, with the lower end connected to the inlet on the side of the gas-liquid separator shell 3, which is used to guide the liquid-containing gas from the upper part of the gas-liquid separator to the lower part of the gas-liquid separator. The oblique downward angle is determined by the type of working fluid in the system to ensure that the liquid-containing gas can obtain a suitable downward velocity and ensure uniform flow.

[0033] Specifically, see Figure 2 The conical support 5 has a fixed seat at its bottom, which is sealed to the bottom surface inside the gas-liquid separator shell 3. The conical support 5 divides the inside of the gas-liquid separator shell 3 into a liquid-containing chamber and a pure gas chamber.

[0034] Specifically, the taper of the conical support 5 is adjusted by the aspect ratio of the liquid-containing cavity and the permeability per unit area of ​​the semi-permeable membrane 7.

[0035] Specifically, see Figure 2 The liquid-containing cavity is a closed space formed by the outer shell 3 of the gas-liquid separator and the outer side of the conical support 5. The cross-sectional area of ​​the liquid-containing cavity changes during the flow of liquid-containing gas. When the gas passes through the semi-permeable membrane 7 on the conical support 5, the flow rate of the liquid-containing gas can be kept constant.

[0036] Specifically, see Figure 2The gas outlet at the bottom of the gas-liquid separator housing 3 is connected to the gas outlet pipe 6. The gas outlet pipe 6 is coaxially arranged with the liquid separator housing 3. The gas separated by the semi-permeable membrane 7 is discharged from the gas outlet through the gas outlet pipe 6. The inlet tapering section 1, the inlet section 2, and the liquid outlet pipe 4 are designed with pipe diameters according to actual needs.

[0037] Specifically, the semi-permeable membrane 7 is a liquid-blocking and gas-permeable membrane, which achieves liquid blocking and gas permeability based on the pressure difference across the membrane according to the difference between the diameters of liquid molecules and gas molecules.

[0038] Specifically, the length-to-diameter ratio of the gas-liquid separator shell 3 is adjusted by the acceleration of the liquid-containing gas and the flow rate of the liquid-containing gas by the inlet tapering section 1.

[0039] The gas-liquid separator proposed in this invention, applicable to different flight attitude angles, should have an increased velocity at the inlet converging section 1 such that the radial component of the velocity of the liquid-containing gas is tangent to the inner wall of the gas-liquid separator shell 3. At the same time, the centripetal force formed by this velocity on the inner wall of the gas-liquid separator shell 3 can be greater than the acceleration generated during flight, so that the liquid in the liquid-containing gas eventually adheres to the wall and moves towards the outlet pipe.

[0040] In this embodiment of the invention, the liquid-containing gas in the refrigeration system, driven by pressure, first enters the converging section for acceleration. The accelerated gas then enters the liquid-containing chamber tangentially along the inlet section. Simultaneously, due to the downward inclination angle of the inlet section, the liquid-containing gas generates a velocity component that moves towards the other end. The centrifugal force generated by the rotation causes the liquid in the gas to move along the inner wall to the tangential outlet pipe at the other end. Meanwhile, the gas, driven by the pressure difference, passes through the liquid-blocking and gas-permeable membrane and is discharged towards the gas outlet pipe, thus achieving gas-liquid separation.

[0041] In this invention, the conical support 5 can support the liquid-blocking and gas-permeable membrane on the one hand, and on the other hand, as the gas continuously passes through the liquid-blocking and gas-permeable membrane, the liquid content of the liquid-containing gas in the separation chamber increases. The conical support creates different cross-sectional areas at different positions, so that the permeation efficiency of the liquid-blocking and gas-permeable membrane is always maintained at a high level.

[0042] In summary, this invention innovatively constructs a simple separation structure without any moving parts by deeply studying the influence of changes in flight attitude angle on the flow characteristics and separation process of gas-liquid mixtures. This structure ensures that the separator can efficiently, continuously and stably separate liquids under the combined action of gravity, inertial force and centrifugal force, regardless of whether the separator is in a level flight, climb, dive, or yaw, roll and other complex and variable attitudes.

[0043] The above description is merely an embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related system fields, are similarly included within the scope of protection of the present invention.

Claims

1. A gas-liquid separator suitable for different flight attitude angles, characterized in that: The system includes a gas-liquid separator housing (3), with an inlet on the upper part of the side of the gas-liquid separator housing (3), and an inlet section (2) and an inlet tapering section (1) connected in sequence at the inlet. A liquid outlet is provided on the lower part of the side of the gas-liquid separator housing (3), and the liquid outlet is connected to a liquid outlet pipe (4). The liquid outlet pipe (4) is tangent to the inner wall of the gas-liquid separator housing (3), and the direction of the liquid outlet pipe (4) is the same as the direction of the gas rotation inside the gas-liquid separator. A conical support (5) is provided inside the gas-liquid separator housing (3), and the conical support (5) is fixedly connected to the bottom of the gas-liquid separator housing (3). A semi-permeable membrane covers the outer surface of the conical support (5). An air outlet is provided at the bottom of the gas-liquid separator housing (3), and the air outlet corresponds to the bottom of the conical support (5). The conical support (5) divides the interior of the gas-liquid separator shell (3) into a liquid-containing chamber and a pure gas chamber; The inlet section (2) is set at an angle downwards, with its lower end connected to the inlet on the side of the gas-liquid separator shell (3), which is used to guide the liquid-containing gas from the upper part of the gas-liquid separator to the lower part of the gas-liquid separator; the taper of the conical support (5) is adjusted by the length-to-diameter ratio of the liquid-containing cavity and the unit area permeability of the semi-permeable membrane (7); The liquid-containing cavity is a closed space formed by the outer shell (3) of the gas-liquid separator and the outer side of the conical support (5). During the flow of liquid-containing gas, the cross-sectional area of ​​the liquid-containing cavity changes. When the gas passes through the semi-permeable membrane (7) on the conical support (5), the flow rate of the liquid-containing gas can be kept constant.

2. A gas-liquid separator suitable for different flight attitude angles according to claim 1, characterized in that: The inlet tapering section (1) is a converging nozzle used to accelerate the liquid-containing gas, causing the liquid in the liquid-containing gas to flow along the inner wall of the gas-liquid separator shell (3).

3. A gas-liquid separator suitable for different flight attitude angles according to claim 2, characterized in that: One end of the inlet section (2) is connected to the smaller end of the inlet tapering section (1), and the other end of the inlet section (2) is connected to the inlet on the side of the gas-liquid separator shell (3) and enters tangentially along the gas-liquid separator shell (3).

4. A gas-liquid separator suitable for different flight attitude angles according to claim 3, characterized in that: The conical support (5) has a fixed seat at the bottom, and the fixed seat is sealed to the bottom surface inside the gas-liquid separator shell (3).

5. A gas-liquid separator suitable for different flight attitude angles according to any one of claims 1-4, characterized in that: The gas outlet at the bottom of the gas-liquid separator housing (3) is connected to the gas outlet pipe (6).

6. A gas-liquid separator suitable for different flight attitude angles according to claim 5, characterized in that: The semipermeable membrane (7) is a liquid-blocking and gas-permeable membrane, which is based on the pressure difference across the membrane to block liquid and allow gas to pass through, according to the difference between the diameters of liquid molecules and gas molecules.

7. A gas-liquid separator suitable for different flight attitude angles according to claim 6, characterized in that: The length-to-diameter ratio of the gas-liquid separator shell (3) is adjusted by the inlet tapering section (1) to accelerate the liquid-containing gas and regulate the flow rate of the liquid-containing gas.

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