A micro gas-liquid separation device

Abstract

A miniature gas-liquid separation device is composed of an upper plate layer and a lower plate layer of a gas-liquid separator, and a metal wire mesh layer and a sealing ring are arranged between the upper plate layer and the lower plate layer of the gas-liquid separator; the present invention can realize the efficient separation of gas and liquid phase mixtures with small flow and low pressure, and improve the separation efficiency of the device for gas and liquid phase substances by combining the strong liquid capillary force of the tapered channel and the liquid-blocking and air-permeable characteristics of the metal wire mesh, and adopts a tapered flow channel with a smooth flow structure to increase the surface tension of the liquid while reducing the overall system flow resistance. At the same time, a special chemical surface modification method is adopted to perform liquid-repellent surface treatment on the metal wire mesh for substances with different liquid properties such as water and oil, so as to enhance the liquid-blocking and air-permeable performance, further improve the performance of the gas-liquid separator, and can be promoted and produced in large quantities.

Description

Technical Field

[0001] The invention belongs to the technical field of multiphase flow control such as microchip-level chemical, biological and medical detection, and specifically relates to a micro gas-liquid separation device and a preparation method thereof. Background Art

[0002] As one of the important means of controlling the composition of multiphase fluid substances in current biochip laboratories, large-scale microfluidic technology, on-chip precision chromatography, mass spectrometry detection instruments and other new bioanalysis, chemical and medical health industries, the design and preparation methods of chip-level micro gas-liquid separation devices have attracted much attention.

[0003] In order to prepare modular micro gas-liquid material separation devices that can be used for independent integration, a variety of design structures have been proposed at home and abroad in recent years. Among them, there are active gas-liquid two-phase separators based on high-speed centrifugal moving parts and two-phase fluid separators based on flexible polymer film materials. The main technical difficulties faced by on-chip micro gas-liquid separators at present are that due to the size limitations of micro devices, the two-phase fluid movement degenerates into a linear flow law with low flow rate and low Reynolds number. The low-flow two-phase material supply is difficult to meet the working characteristics of high-speed centrifugal active gas-liquid two-phase separators, and the separation efficiency is low. In addition, the flow resistance of the two-phase fluid separator based on flexible polymer film materials is too large, and an additional pre-stage pressurization device needs to be introduced to ensure the separation efficiency and working reliability of the device. However, the introduction of too many moving parts and pressure devices will cause the flow stability and robustness of the overall fluid circuit of the system to deteriorate sharply. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a micro gas-liquid separation device with reasonable design and simple structure, which can ensure efficient separation of gas-liquid phase fluid working medium while minimizing the resistance loss along the entire fluid circuit.

[0005] The technical solution adopted to solve the above technical problems is: a micro gas-liquid separation device, which is composed of an upper plate layer of a gas-liquid separator and a lower plate layer of a gas-liquid separator, and a metal wire mesh layer and a sealing ring are arranged between the upper plate layer of the gas-liquid separator and the lower plate layer of the gas-liquid separator;

[0006] The upper plate layer of the gas-liquid separator is a cylindrical structure, and the center position of the end surface where the upper plate layer of the gas-liquid separator contacts the lower plate layer of the gas-liquid separator is processed with an upper plate layer metal wire mesh alignment sink, and the outer side of the upper plate layer metal wire mesh alignment sink is processed with an upper plate layer sealing ring groove, and the upper plate layer of the gas-liquid separator is processed with an upper plate layer gas-liquid mixture inlet and a single-phase liquid outlet, and 1 to 5 circles of semi-annular flow channels are processed between the upper plate layer gas-liquid mixture inlet and the single-phase liquid outlet, one end of the semi-annular flow channel is connected to the upper plate layer gas-liquid mixture inlet, and the other end is connected to the single-phase liquid outlet, the semi-annular flow channel is processed on the end surface of the upper plate layer metal wire mesh alignment sink, and the center position of the upper plate layer of the gas-liquid separator is processed with an upper plate layer center assembly through hole;

[0007] The end surface of the lower plate layer of the gas-liquid separator that contacts the upper plate layer of the gas-liquid separator is processed with a lower plate layer metal wire mesh alignment sinker corresponding to the upper plate layer metal wire mesh alignment sinker, the outer side of the lower plate layer metal wire mesh alignment sinker is processed with a lower plate layer sealing ring groove corresponding to the upper plate layer sealing ring groove, the end surface of the lower plate layer metal wire mesh alignment sinker is processed with a gas enrichment cavity, the end surface of the gas enrichment cavity is processed with a gas outlet of the lower plate layer of the gas-liquid separator, and the center position of the lower plate layer of the gas-liquid separator is processed with a lower plate layer center assembly through hole corresponding to the upper plate layer center assembly through hole.

[0008] The semi-annular flow channel of the present invention is composed of two groups of radially symmetrical semi-annular channel structures. The cross-sectional shape of the mixed liquid inlet of each semi-annular channel is a rectangle with a cross-sectional depth of 500 to 1500 μm and a width of 1500 to 3000 μm, and the cross-sectional shape of the single-phase liquid outlet of the semi-annular channel is a rectangle with a cross-sectional depth of 500 to 1500 μm and a width of 200 to 600 μm; the distance between adjacent semi-annular channel structures is 1000 to 2000 μm, the inlet of each semi-annular channel structure is connected to the gas-liquid mixture inlet of the upper plate layer, and the outlet is connected to the single-phase liquid outlet; the width of the semi-annular flow channel gradually converges from the mixed liquid inlet end to the single-phase liquid outlet end.

[0009] The upper plate layer of the gas-liquid separator of the present invention has a diameter of 30 to 100 mm and a thickness of 10 to 15 mm. The gas-liquid mixture inlet and the single-phase liquid outlet of the upper plate layer are through holes with a diameter of 5 mm. The central assembly through hole of the upper plate layer is used for subsequent overall structure assembly and has a diameter of 6 to 10 mm. The metal wire mesh alignment sinker depth of the upper plate layer is 100 to 350 μm and a diameter of 20 to 80 mm.

[0010] The lower plate layer of the gas-liquid separator of the present invention is a cylindrical structure with a diameter of 30-100mm and a thickness of 5-10mm; the diameter of the gas enrichment cavity is 15-75mm, the depth of the metal wire mesh positioning sinker of the lower plate layer is 100-350μm, and the diameter is 20-80mm; the diameter of the gas outlet of the lower plate layer of the gas-liquid separator is 5mm.

[0011] The metal mesh layer of the present invention is arranged between the upper plate layer metal mesh alignment sinking platform and the lower plate layer metal mesh alignment sinking platform, and the shape and thickness of the metal mesh layer are adapted to the shape and overall depth of the upper plate layer metal mesh alignment sinking platform and the lower plate layer metal mesh alignment sinking platform.

[0012] The metal wire mesh layer of the invention is composed of a single-layer curtain-type woven metal wire mesh, the diameter of the wire mesh layer is 20-80mm, the thickness of the single-layer metal wire mesh is 200-700μm; the diameter of a single metal wire of the metal wire mesh is 50-200μm, and the length and width of the woven through hole are both 100-300μm.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. The micro gas-liquid separation device structure of the present invention can realize the efficient separation of small flow, low pressure gas and liquid phase mixtures, and combines the strong liquid capillary force of the tapered channel and the liquid-resistant and air-permeable properties of the metal wire mesh to improve the separation efficiency of the device for gas and liquid phase substances.

[0015] 2. The present invention adopts a tapered flow channel with a smooth flow structure to increase the surface tension of the liquid while reducing the overall system flow resistance. At the same time, a special chemical surface modification method is used to make it super hydrophobic. For substances with different liquid properties such as water and oil, the metal wire mesh is treated with a liquid-repellent surface to enhance the liquid-blocking and air-permeability performance, further improving the performance of the gas-liquid separator.

[0016] 3. The present invention has a simple structure. The liquid enrichment channel structure of the upper plate layer and the gas collection chamber structure of the lower plate layer are made of materials that are easy to process, have good chemical stability and good mechanical properties. The curtain-type metal wire mesh layer is made of a metal wire mesh material with dense micropores through a special surface chemical treatment. The multi-layer structure is packaged by alignment, sealing with a sealing ring and threaded connection, has high reusability, and can be promoted for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 sectional view of .

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure of the upper plate layer 1 of the gas-liquid separator.

[0020] Figure 4 yes Figure 3 sectional view of .

[0021] Figure 5 yes Figure 2 Schematic diagram of the structure of the lower plate layer 2 of the gas-liquid separator.

[0022] Figure 6 yes Figure 5 sectional view of .

[0023] Figure 7 Schematic diagram of the structure of the metal mesh layer 3.

[0024] In the figure: 1. upper plate layer of gas-liquid separator; 2. lower plate layer of gas-liquid separator; 3. wire mesh layer; 4. sealing ring; 101. gas-liquid mixture inlet of upper plate layer; 102. single-phase liquid outlet; 103. semi-annular flow channel; 104. sealing ring groove of upper plate layer; 105. wire mesh positioning sinker of upper plate layer; 106. central assembly through hole of upper plate layer; 201. gas outlet of lower plate layer of gas-liquid separator; 202. gas enrichment chamber; 203. sealing ring groove of lower plate layer; 204. wire mesh positioning sinker of lower plate layer; 205. central assembly through hole of lower plate layer. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to these embodiments. Example 1

[0026] exist Figures 1 to 7 The present invention relates to a micro gas-liquid separation device, which is composed of an upper plate layer 1 of a gas-liquid separator and a lower plate layer 2 of a gas-liquid separator, a metal mesh layer 3 is installed between the upper plate layer 1 of the gas-liquid separator and the lower plate layer 2 of the gas-liquid separator, the metal mesh layer 3 cooperates with the tapered channel of the upper plate layer 1 of the gas-liquid separator to block the liquid and conduct the gas at the same time, a sealing ring 4 is installed between the upper plate layer 1 of the gas-liquid separator and the lower plate layer 2 of the gas-liquid separator, and the sealing ring 4 prevents the separated liquid from leaking.

[0027] The upper plate layer 1 of the gas-liquid separator of the present embodiment is a cylindrical structure, and the center position of the end surface where the upper plate layer 1 of the gas-liquid separator contacts the lower plate layer 2 of the gas-liquid separator is processed with an upper plate layer metal wire mesh alignment sink 105, and the outer side of the upper plate layer metal wire mesh alignment sink 105 is processed with an upper plate layer sealing ring groove 104, and an upper plate layer gas-liquid mixture inlet 101 and a single-phase liquid outlet 102 are processed on the upper plate layer 1 of the gas-liquid separator, and three circles of semi-annular flow channels 103 are processed between the upper plate layer gas-liquid mixture inlet 101 and the single-phase liquid outlet 102, and the specific number of circles is determined according to the number of circles of the upper plate layer 1 of the gas-liquid separator, one end of the semi-annular flow channel 103 is connected to the upper plate layer gas-liquid mixture inlet 101, and the other end is connected to the single-phase liquid outlet 102, and the semi-annular flow channel 103 is connected to the upper plate layer gas-liquid mixture inlet 101. Channel 103 is processed on the end face of the upper plate layer metal wire mesh positioning sinker 105. The semi-annular flow channel 103 is composed of two groups of radially symmetrical semi-annular channel structures. The cross-sectional shape of the mixed liquid inlet of each semi-annular channel is a rectangle with a cross-sectional depth of 1000μm and a width of 2250μm, and the cross-sectional shape of the single-phase liquid outlet of the semi-annular channel is a rectangle with a cross-sectional depth of 1000μm and a width of 400μm. In order to achieve a higher gas-liquid separation efficiency, the distance between adjacent semi-annular channel structures is 1500μm, and the inlet of each semi-annular channel structure is connected to the gas-liquid mixture inlet 101 of the upper plate layer, and the outlet is connected to the single-phase liquid outlet 102. The width of the semi-annular flow channel 103 gradually converges from the mixed liquid inlet end to the single-phase liquid outlet end. After the gas-liquid mixture enters the separator, it is compressed through the semi-annular flow channel 103, and the gas phase material gradually separates from the mainstream area and enters the lower plate layer 2 of the gas-liquid separator through the metal wire mesh layer 3. Due to the flow resistance of the metal wire mesh layer 3, the liquid material converges to the single-phase liquid outlet 102 through the semi-annular flow channel 103.

[0028] An upper plate layer center assembly through hole 106 is processed at the center position of the upper plate layer 1 of the gas-liquid separator. The diameter of the upper plate layer 1 of the gas-liquid separator is 65mm, and the thickness is 12.5mm. The upper plate layer gas-liquid mixture inlet 101 and the single-phase liquid outlet 102 are through holes with a diameter of 5mm; the upper plate layer center assembly through hole 106 is used for subsequent overall structure assembly, with a diameter of 8mm. The upper plate layer metal wire mesh positioning sinker 105 has a depth of 200μm and a diameter of 50mm.

[0029] The end surface of the gas-liquid separator lower plate layer 2 in this embodiment in contact with the gas-liquid separator upper plate layer 1 is processed with a lower plate layer metal wire mesh alignment sink 204 corresponding to the upper plate layer metal wire mesh alignment sink 105, and the metal wire mesh layer 3 is arranged between the upper plate layer metal wire mesh alignment sink 105 and the lower plate layer metal wire mesh alignment sink 204. The shape and thickness of the metal wire mesh layer 3 are adapted to the shape and overall depth of the upper plate layer metal wire mesh alignment sink 105 and the lower plate layer metal wire mesh alignment sink 204. The lower plate layer metal wire mesh alignment sink 204 has a lower plate layer sealing ring groove 203 corresponding to the upper plate layer sealing ring groove 104 processed on the outer side, and the sealing ring 4 is arranged in the upper plate layer sealing ring groove 104 and the lower plate layer sealing ring groove 203. A gas enrichment cavity 202 is processed on the end surface of the lower plate layer metal mesh alignment sink 204, and a gas outlet 201 of the lower plate layer of the gas-liquid separator is processed on the end surface of the gas enrichment cavity 202. A lower plate layer central assembly through hole 205 corresponding to the upper plate layer central assembly through hole 106 is processed at the center position of the lower plate layer 2 of the gas-liquid separator. The lower plate layer 2 of the gas-liquid separator is a cylindrical structure with a diameter of 65mm and a thickness of 7.5mm; the gas enrichment cavity 202 has a diameter of 45mm, the lower plate layer metal mesh alignment sink has a depth of 200μm and a diameter of 50mm; the gas outlet 201 of the lower plate layer of the gas-liquid separator has a diameter of 5mm.

[0030] The metal mesh layer 3 of this embodiment is composed of a single-layer curtain-type woven metal mesh, the diameter of the mesh layer is 20 to 80 mm, and the thickness of the single-layer metal mesh is 400 μm; the metal mesh is generally made of alloy metal materials with good mechanical properties such as aluminum, copper, and stainless steel. The diameter of a single metal wire of the metal mesh is 125 μm, and the length and width of the woven through hole are both 200 μm. Example 2

[0031] In the above-mentioned embodiment 1, 5 circles of semi-annular flow channels 103 are processed between the upper plate layer gas-liquid mixture inlet 101 and the single-phase liquid outlet 102 of this embodiment. The diameter of the upper plate layer 1 of the gas-liquid separator is 100mm and the thickness is 15mm. The upper plate layer gas-liquid mixture inlet 101 and the single-phase liquid outlet 102 are through holes with a diameter of 5mm; the diameter of the central assembly through hole 106 of the upper plate layer is 10mm, and the depth of the upper plate layer metal wire mesh positioning sinking platform 105 is 350μm and the diameter is 80mm; the lower plate layer 2 of the gas-liquid separator is a cylindrical structure with a diameter of 100mm and a thickness of 10mm; the diameter of the gas enrichment cavity 202 is 75mm, and the depth of the lower plate layer metal wire mesh positioning sinking platform is 105. The depth is 350μm, the diameter is 80mm, and the diameter of the gas outlet 201 of the lower plate layer of the gas-liquid separator is 5mm; the cross-sectional shape of the mixed liquid inlet of each semi-annular channel is a rectangle with a cross-sectional depth of 1500μm and a width of 3000μm, and the cross-sectional shape of the single-phase liquid outlet of the semi-annular channel is a rectangle with a cross-sectional depth of 1500μm and a width of 600μm; the distance between adjacent semi-annular channel structures is 1000μm; the metal wire mesh layer 3 is composed of a single-layer curtain-type woven metal wire mesh, the diameter of the wire mesh layer is 80mm, and the thickness of the single-layer metal wire mesh is 700μm; the diameter of a single metal wire of the metal wire mesh is 50μm, and the length and width of the woven through hole are both 100μm. The remaining components and the connection relationship of the components are exactly the same as those in Example 1. Example 3

[0032] In the above-mentioned embodiment 1, three circles of semi-circular flow channels 103 are processed between the gas-liquid mixture inlet 101 and the single-phase liquid outlet 102 of the upper plate layer of this embodiment. The diameter of the upper plate layer 1 of the gas-liquid separator is 30mm, and the thickness is 10mm. The gas-liquid mixture inlet 101 and the single-phase liquid outlet 102 of the upper plate layer are through holes with a diameter of 5mm; the diameter of the central assembly through hole 106 of the upper plate layer is 6mm, and the depth of the upper plate layer metal wire mesh counter-positioning sink 105 is 100μm and the diameter is 20mm. The lower plate layer 2 of the gas-liquid separator is a cylindrical structure with a diameter of 30mm and a thickness of 5mm; the diameter of the gas enrichment chamber 202 is 15mm, and the depth of the lower plate layer metal wire mesh counter-positioning sink is 100μm and the diameter is 20mm; the diameter of the gas outlet 201 of the lower plate layer of the gas-liquid separator is 5mm. The cross-sectional shape of the mixed liquid inlet of each semi-annular channel is a rectangle with a cross-sectional depth of 500μm and a width of 1500μm, and the cross-sectional shape of the single-phase liquid outlet of the semi-annular channel is a rectangle with a cross-sectional depth of 500μm and a width of 200μm; the distance between adjacent semi-annular channel structures is 2000μm. The metal wire mesh layer 3 is composed of a single-layer curtain-type woven metal wire mesh, the diameter of the wire mesh layer is 20mm, and the thickness of the single-layer metal wire mesh is 200μm; the diameter of a single metal wire of the metal wire mesh is 200μm, and the length and width of the woven through hole are both 300μm.

[0033] The processing steps and separation method of the present invention are as follows:

[0034] 1. Select an organic glass material that is easy to process. In the present invention, PMMA is used as the material of the upper plate layer 1 of the gas-liquid separator. The upper plate layer gas-liquid mixture inlet 101, the single-phase liquid outlet 102, the semi-annular flow channel 103, the upper plate layer sealing ring groove 104, the upper plate layer metal wire mesh alignment sink 105, and the upper plate layer center assembly through hole 106 are manufactured by laser or precision machining;

[0035] 2. Select the same organic glass material as the material of the lower plate layer 2 of the gas-liquid separator, and use laser or precision machining to process the gas outlet 201, gas enrichment cavity 202, lower plate sealing ring groove 203, lower plate metal mesh alignment sink 204, and lower plate center assembly through hole 205 of the gas-liquid separator;

[0036] 3. Select a 200-mesh brass wire mesh, use laser or precision machining to cut the wire mesh into a shape suitable for steps 1) and 2), and cut a through hole at the center that is compatible with the central assembly through hole 106 of the upper plate layer and the central assembly through hole 205 of the lower plate layer;

[0037] 4. The metal mesh processed in step 3) is placed in a methanol solution for ultrasonic cleaning and then cleaned with deionized water. The cleaned metal mesh is placed in acetone for ultrasonic cleaning and then cleaned again with deionized water.

[0038] 5. The metal mesh processed in step 4) was blown dry with nitrogen and then treated with ozone plasma for 30 seconds. It was then placed horizontally in a 0.01 mol / L AgNO3 solution and immersed for 20 seconds. It was then taken out and washed with a large amount of deionized water. It was then dried in an oven at 60°C to complete the surface modification treatment.

[0039] 6. The gas-liquid separator upper plate layer 1 and the gas-liquid separator lower plate layer 2 processed in steps 1) and 2) are cleaned with deionized water and then blown dry with nitrogen, and a suitable sealing ring 4 is installed in the sealing ring groove, and then the metal wire mesh processed in step 5) is placed in the sink positioned between the upper and lower plate layers;

[0040] 7. Use appropriate threaded fasteners and raw tape to fasten the upper and lower plate layers and the middle metal mesh layer structure, and use breathable tape to cover the gas-liquid mixture inlet and single-phase liquid outlet of the upper plate layer and the gas outlet of the lower plate layer to complete the assembly of the micro gas-liquid separator.

[0041] 8. The air-water mixture is introduced into the gas-liquid separator from the gas-liquid mixture inlet 101 of the upper plate layer. The water passing through the separator will be discharged from the single-phase liquid outlet 102, and the air will penetrate the metal wire mesh and be discharged from the gas outlet 201 of the lower plate layer of the gas-liquid separator.

Claims

1. A micro gas-liquid separation device, characterized in that: It is composed of an upper plate layer (1) of a gas-liquid separator and a lower plate layer (2) of a gas-liquid separator, wherein a metal wire mesh layer (3) and a sealing ring (4) are arranged between the upper plate layer (1) of the gas-liquid separator and the lower plate layer (2) of the gas-liquid separator; The gas-liquid separator upper plate layer 1 is a cylindrical structure. The center position of the end surface where the gas-liquid separator upper plate layer (1) contacts the gas-liquid separator lower plate layer (2) is processed with an upper plate layer metal wire mesh alignment sink (105). The outer side of the upper plate layer metal wire mesh alignment sink (105) is processed with an upper plate layer sealing ring groove (104). The gas-liquid separator upper plate layer (1) is processed with an upper plate layer gas-liquid mixture inlet (101) and a single-phase liquid outlet (102). One to five circles of semi-annular flow channels (103) are machined between the gas inlet (101) and the single-phase liquid outlet (102); one end of the semi-annular flow channel (103) is connected to the gas-liquid mixture inlet (101) of the upper plate layer, and the other end is connected to the single-phase liquid outlet (102); the semi-annular flow channel (103) is machined on the end surface of the upper plate layer metal wire mesh alignment sink (105); and an upper plate layer central assembly through hole (106) is machined at the center position of the upper plate layer (1) of the gas-liquid separator; The end surface of the gas-liquid separator lower plate layer (2) in contact with the gas-liquid separator upper plate layer (1) is processed with a lower plate layer metal wire mesh alignment sink (204) corresponding to the upper plate layer metal wire mesh alignment sink (105); the outer side of the lower plate layer metal wire mesh alignment sink (204) is processed with a lower plate layer sealing ring groove (203) corresponding to the upper plate layer sealing ring groove (104); the end surface of the lower plate layer metal wire mesh alignment sink (204) is processed with a gas enrichment cavity (202); the end surface of the gas enrichment cavity (202) is processed with a gas outlet (201) of the gas-liquid separator lower plate layer; the center position of the gas-liquid separator lower plate layer (2) is processed with a lower plate layer central assembly through hole (205) corresponding to the upper plate layer central assembly through hole (106); The semi-annular flow channel (103) is composed of two groups of radially symmetrical semi-annular channel structures. The cross-sectional shape of the mixed liquid inlet of each semi-annular channel is a rectangle with a cross-sectional depth of 500 to 1500 μm and a width of 1500 to 3000 μm. The cross-sectional shape of the single-phase liquid outlet of the semi-annular channel is a rectangle with a cross-sectional depth of 500 to 1500 μm and a width of 200 to 600 μm. The distance between adjacent semi-annular channel structures is 1000 to 2000 μm. The inlet of each semi-annular channel structure is connected to the gas-liquid mixture inlet (101) of the upper plate layer, and the outlet is connected to the single-phase liquid outlet (102). The width of the semi-annular flow channel (103) gradually converges from the mixed liquid inlet end to the single-phase liquid outlet end. The gas-liquid separator upper plate layer (1) has a diameter of 30 to 100 mm and a thickness of 10 to 15 mm. The gas-liquid mixture inlet (101) and the single-phase liquid outlet (102) of the upper plate layer are through holes with a diameter of 5 mm. The central assembly through hole (106) of the upper plate layer is used for subsequent overall structure assembly and has a diameter of 6 to 10 mm. The upper plate layer metal wire mesh alignment sink (105) has a depth of 100 to 350 μm and a diameter of 20 to 80 mm.

2. The micro gas-liquid separation device according to claim 1, characterized in that: The lower plate layer (2) of the gas-liquid separator is a cylindrical structure with a diameter of 30 to 100 mm and a thickness of 5 to 10 mm; the diameter of the gas enrichment chamber (202) is 15 to 75 mm, the depth of the lower plate layer metal wire mesh alignment sink (204) is 100 to 350 μm, and the diameter is 20 to 80 mm; the diameter of the gas outlet (201) of the lower plate layer of the gas-liquid separator is 5 mm.

3. The micro gas-liquid separation device according to claim 1, characterized in that: The metal mesh layer (3) is arranged between the upper plate layer metal mesh alignment sinking platform (105) and the lower plate layer metal mesh alignment sinking platform (204), and the shape and thickness of the metal mesh layer (3) are adapted to the shape and overall depth of the upper plate layer metal mesh alignment sinking platform (105) and the lower plate layer metal mesh alignment sinking platform (204).

4. The micro gas-liquid separation device according to claim 3, characterized in that: The metal wire mesh layer (3) is composed of a single-layer curtain-type woven metal wire mesh, the diameter of the wire mesh layer is 20-80 mm, the thickness of the single-layer metal wire mesh is 200-700 μm; the diameter of a single metal wire of the metal wire mesh is 50-200 μm, and the length and width of the woven through hole are both 100-300 μm.

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