Gas-liquid separator suitable for different flight attitude angles

Abstract

The invention relates to a gas-liquid separator suitable for different flight attitude angles, which comprises a gas-liquid separator shell, an inlet is arranged at the upper part of the shell, the inlet is sequentially connected with an inlet section and an inlet reducing section, a liquid outlet is arranged at the lower part of the shell, the liquid outlet is connected with a liquid outlet pipe, and the side wall of the liquid outlet pipe is tangent to the inner wall of the gas-liquid separator shell. The direction of the liquid outlet pipe is the same as the rotating direction of gas in the gas-liquid separator; a conical support is arranged in the shell and fixedly connected with the bottom of the shell. The outer side of the conical bracket is covered with a semi-permeable membrane; an air outlet in the bottom of the shell corresponds to the bottom of the conical bracket. By deeply analyzing the influence mechanism of the flight attitude angle change on the gas-liquid two-phase flow behavior and the separation effect, the internal structure and the flow channel arrangement mode of the separator are optimized and improved, the efficient gas-liquid separation efficiency can be kept no matter what attitude angle the aircraft is located, and the gas-liquid separation efficiency is improved. And the separation instability caused by the change of the flight attitude is effectively reduced.

Description

Technical Field

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

[0002] In the current rapid development of aerospace engineering, the efficient and stable operation of the vapor compression cycle system is one of the important factors to ensure the performance and safety of aircraft. However, during long-term flight phases or complex and changing flight environments, the vapor compression cycle process often produces a gas-liquid mixture, and this problem becomes increasingly important. Since aircraft need to undergo various attitude angle changes when performing missions, such as pitch, yaw and roll, this will cause significant changes in the internal flow field characteristics of traditional gas-liquid separators, seriously affecting their availability. Summary of the invention

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

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

[0005] The present invention proposes a gas-liquid separator suitable for different flight attitude angles, the special features of which are:

[0006] It comprises a gas-liquid separator shell, wherein an inlet is provided at the upper part of the side surface of the gas-liquid separator shell, and the inlet is connected to the inlet section and the inlet tapered section in sequence; a liquid outlet is provided at the lower part of the side surface of the gas-liquid separator shell, and the liquid outlet is connected to the liquid outlet pipe, the side wall of the liquid outlet pipe 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 rotation direction of the gas inside the gas-liquid separator, so as to ensure the smooth outflow of the liquid; a conical bracket is provided inside the gas-liquid separator shell, and the conical bracket is fixedly connected to the bottom of the gas-liquid separator shell; the outer side surface of the conical bracket is covered with a semipermeable membrane, and the semipermeable membrane is fixed to the conical bracket; an air outlet is provided at the bottom of the gas-liquid separator shell, and the air outlet corresponds to the bottom of the conical bracket.

[0007] Furthermore, the inlet tapered section is a contraction-type nozzle, which is used 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.

[0008] Furthermore, one end of the inlet section is connected to an end of the inlet tapered section with a smaller inner diameter, 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 arranged obliquely downward, and the lower end is connected to the inlet on the side of the gas-liquid separator shell, and 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 downward angle is determined by the type of system working fluid to ensure that the liquid-containing gas can obtain a suitable downward velocity and ensure flow uniformity.

[0009] Furthermore, a fixing seat is provided at the bottom of the conical support, and the fixing seat is sealed and connected to the bottom surface of the gas-liquid separator shell to form a separation cavity. The conical support and the semipermeable membrane divide the gas-liquid separator shell into a liquid cavity and a pure gas cavity.

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

[0011] Furthermore, the liquid-containing cavity is a closed space formed by the gas-liquid separator shell and the outer side of the conical bracket. The cross-sectional area of ​​the liquid-containing cavity changes during the flow of the liquid-containing gas. When the gas passes through the semipermeable membrane on the conical bracket, the flow rate of the liquid-containing gas can be maintained unchanged, thereby achieving uniform ventilation on the surface of the semipermeable membrane during the gas-liquid separation process.

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

[0013] Furthermore, the semipermeable membrane is a liquid-blocking and gas-permeable membrane, which is liquid-blocking and gas-permeable according to the pressure difference on both sides of the membrane based on the difference between the diameter of liquid molecules and the diameter of gas molecules.

[0014] Furthermore, the liquid outlet of the gas-liquid separator shell is connected to a liquid outlet pipe, the liquid outlet pipe 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 rotation direction of the gas inside the gas-liquid separator.

[0015] Furthermore, the aspect ratio of the gas-liquid separator housing is adjusted by the inlet tapered section to accelerate the liquid-containing gas and the flow rate of the liquid-containing gas.

[0016] Advantages of the present invention:

[0017] The gas-liquid separator provided in the present application mainly performs separation by centrifugal action and is not affected by gravity or other force fields; the gas-liquid separator provided in the present application can achieve gas-liquid separation at different placement angles; the gas-liquid separator provided in the present application has a simple structure, does not have any moving parts, is small in size, light in weight, and is easy to carry and install; the gas-liquid separator suitable for different flight attitude angles provided by the present invention has a unique adaptive structure and functional mechanism design, which breaks through the technical limitations of traditional separators that are only suitable for specific flight conditions, and particularly emphasizes and realizes the ability to adapt to various flight attitude angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the appearance of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the conical stent and the semipermeable membrane of the present invention.

[0021] Description of reference numerals:

[0022] 1-Inlet tapering section,

[0023] 2- Import section,

[0024] 3-Gas-liquid separator housing,

[0025] 4-Liquid outlet pipe,

[0026] 5-conical bracket,

[0027] 6- Exhaust pipe,

[0028] 7- Semipermeable membrane. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0030] See also Figures 1 to 3A gas-liquid separator suitable for different flight attitude angles includes a gas-liquid separator housing 3, an inlet is provided at the upper part of the side of the gas-liquid separator housing 3, and the inlet is connected to the inlet section 2 and the inlet tapered section 1 in sequence, and a liquid outlet is provided at the lower part of the side of the gas-liquid separator housing 3, and the liquid outlet of the gas-liquid separator housing 3 is connected to the liquid outlet pipe 4, the side wall of 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 rotation direction of the gas inside the gas-liquid separator, so as to ensure the smooth outflow of the liquid. A conical bracket 5 is provided inside the gas-liquid separator housing 3, and the conical bracket 5 is fixed to the bottom of the gas-liquid separator housing 3. The outer side of the conical bracket 5 is covered with a semipermeable membrane; the bottom of the gas-liquid separator housing 3 is provided with an air outlet, and the air outlet corresponds to the bottom of the conical bracket 5.

[0031] Specifically, see Figure 1 and Figure 2 The inlet tapered section 1 is a convergent nozzle, and the function of the convergent 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 an end of the inlet tapered section 1 with a smaller inner diameter, and the other end of the inlet section 2 is connected to the inlet on the side of the gas-liquid separator housing 3, and enters tangentially along the gas-liquid separator housing 3. At the same time, the inlet section 2 is arranged obliquely downward, and the lower end is connected to the inlet on the side of the gas-liquid separator housing 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 system working fluid to ensure that the liquid-containing gas can obtain a suitable downward speed and ensure flow uniformity.

[0033] Specifically, see Figure 2 A fixing seat is provided at the bottom of the conical bracket 5, and the fixing seat is sealed and connected to the bottom surface of the gas-liquid separator housing 3. The conical bracket 5 divides the inside of the gas-liquid separator housing 3 into a liquid-containing cavity and a pure gas cavity.

[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 semipermeable membrane 7 .

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

[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, which is coaxially arranged with the liquid separator housing 3, and the gas separated by the semipermeable membrane 7 is discharged from the gas outlet through the gas outlet pipe 6. The diameters of the inlet tapered section 1, the inlet section 2 and the liquid outlet pipe 4 are designed according to actual needs.

[0037] Specifically, the semipermeable membrane 7 is a liquid-blocking and gas-permeable membrane, which is liquid-blocking and gas-permeable according to the pressure difference on both sides of the membrane based on the difference between the diameter of liquid molecules and the diameter of gas molecules.

[0038] Specifically, the aspect ratio of the gas-liquid separator housing 3 is adjusted by the inlet tapered section 1 to accelerate the liquid-containing gas and the flow rate of the liquid-containing gas.

[0039] When the gas-liquid separator suitable for different flight attitude angles proposed by the present invention is working, the final increased speed at the inlet tapered section 1 should be able to make the component velocity of the liquid-containing gas in the radial direction tangent to the inner wall surface of the gas-liquid separator shell 3, and at the same time, the centripetal force formed by the speed on the inner wall of the gas-liquid separator shell 3 can be greater than the acceleration generated during the flight process, so that the liquid in the liquid-containing gas finally sticks to the wall surface and moves toward the liquid outlet pipe.

[0040] In the example of the present invention, the liquid-containing gas in the refrigeration system, driven by pressure, first enters the tapered section for acceleration, and the accelerated liquid-containing gas enters the liquid-containing cavity tangentially along the inlet section. At the same time, due to the downward inclination of the inlet section, the liquid-containing gas generates a velocity component moving toward the other end. The centrifugal force generated by the rotation causes the liquid in the liquid-containing gas to move closely to the liquid outlet pipe tangential to the other end; at the same time, the gas is driven by the pressure difference to pass through the liquid-blocking and breathable membrane and is discharged to the outlet pipe, thereby achieving gas-liquid separation.

[0041] In the example of the present invention, the conical bracket 5 can support the liquid-resistant breathable membrane on the one hand, and on the other hand, since the gas continuously passes through the liquid-resistant breathable membrane, the liquid content of the liquid-containing gas in the separation chamber increases. Different positions have different cross-sectional areas caused by the conical bracket, so that the permeation efficiency of the liquid-resistant breathable membrane is always maintained at a high level.

[0042] In general, the present 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 of gas-liquid mixture and the separation process. This structure ensures that the liquid can be separated efficiently, continuously and stably under the combined action of gravity, inertia and centrifugal force, regardless of whether the separator is in complex and changeable attitudes such as horizontal flight, climbing, diving, yaw, roll, etc.

[0043] The above descriptions are merely embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related system fields, are also included in the protection scope of the present invention.

Claims

1. A gas-liquid separator suitable for different flight attitude angles, characterized in that: The invention comprises a gas-liquid separator shell (3), wherein an inlet is provided at the upper part of the side of the gas-liquid separator shell (3), and the inlet is connected to the inlet section (2) and the inlet tapered section (1) in sequence; a liquid outlet is provided at the lower part of the side of the gas-liquid separator shell (3), and the liquid outlet is connected to a liquid outlet pipe (4), and the liquid outlet pipe (4) is tangent to the inner wall of the gas-liquid separator shell (3), and the direction of the liquid outlet pipe (4) is the same as the rotation direction of the gas inside the gas-liquid separator; a conical bracket (5) is provided inside the gas-liquid separator shell (3), and the conical bracket (5) is fixedly connected to the bottom of the gas-liquid separator shell (3); the outer side of the conical bracket (5) is covered with a semipermeable membrane; and an air outlet is provided at the bottom of the gas-liquid separator shell (3), and the air outlet corresponds to the bottom of the conical bracket (5).

2. The gas-liquid separator suitable for different flight attitude angles according to claim 1, characterized in that: The inlet tapered section (1) is a contraction-type nozzle, which is used 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).

3. The 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 an end of the inlet tapered section (1) with a smaller inner diameter, and the other end of the inlet section (2) is connected to an inlet on the side of the gas-liquid separator housing (3), and enters tangentially along the gas-liquid separator housing (3); the inlet section (2) is arranged obliquely downward, and the lower end is connected to the inlet on the side of the gas-liquid separator housing (3), so as to guide the liquid-containing gas from the upper part of the gas-liquid separator to the lower part of the gas-liquid separator.

4. The gas-liquid separator suitable for different flight attitude angles according to claim 3, characterized in that: A fixing seat is provided at the bottom of the conical support (5), and the fixing seat is sealedly connected to the bottom surface of the gas-liquid separator housing (3). The conical support (5) divides the interior of the gas-liquid separator housing (3) into a liquid-containing cavity and a pure gas cavity.

5. The gas-liquid separator suitable for different flight attitude angles according to claim 4, characterized in that: 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 semipermeable membrane (7).

6. The gas-liquid separator suitable for different flight attitude angles according to claim 5, characterized in that: The liquid-containing cavity is a closed space formed by the gas-liquid separator housing (3) and the outer side of the conical support (5). The cross-sectional area of ​​the liquid-containing cavity changes during the flow of the liquid-containing gas. When the gas passes through the semipermeable membrane (7) on the conical support (5), the flow rate of the liquid-containing gas can be maintained unchanged.

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

8. The gas-liquid separator suitable for different flight attitude angles according to claim 7, characterized in that: The semipermeable membrane (7) is a liquid-blocking and gas-permeable membrane, which is liquid-blocking and gas-permeable according to the pressure difference on both sides of the membrane based on the difference between the diameter of liquid molecules and the diameter of gas molecules.

9. The gas-liquid separator suitable for different flight attitude angles according to claim 8, characterized in that: The length-to-diameter ratio of the gas-liquid separator housing (3) is adjusted by the inlet tapered section (1) to accelerate the liquid-containing gas and the flow rate of the liquid-containing gas.

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