A gas-liquid separator

Abstract

A gas-liquid separator disclosed by the present invention. First, through the design of the internal components of the gas-liquid separator, the combination of centrifugal separation and conventional gravity separation is realized inside the gas-liquid separator, effectively enhancing the gas-liquid separation effect. At the same time, the design of the conventional centrifugal diversion spiral sheet is avoided, reducing the complexity of the device. Second, through the design of the reflux cap and the baffle cylinder, the secondary and tertiary separation of gas and liquid is realized, effectively improving the separation efficiency. Third, through multiple baffle flows, the residence time of the gas inside the gas-liquid separator is extended, the separation space is increased, and the volume of the gas-liquid separator is reduced. At the same time, the collision and convergence of the liquid are enhanced, and the liquid carried by the gas discharged from the outlet pipe of the separator is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical equipment, and in particular to a gas-liquid separator. Background Art

[0002] Gas-liquid separators are common equipment in the chemical production process, mainly used to separate the liquid carried in the gas. According to different principles and structural forms, gas-liquid separation can be divided into gravitational, inertial, centrifugal, filtration, etc. Among them, the gravitational gas-liquid separator has relatively mature technology and wide application due to its simple structure and convenient processing and manufacturing. However, the gravitational separator generally has disadvantages such as a large volume and low separation efficiency because it only relies on gravitational sedimentation to separate gas and liquid. Currently, research also focuses on improving the internal components of the gravitational separator to reduce its volume and improve the separation effect.

[0003] Patent CN215712852U proposes a splash-breaking gas-liquid separator, which realizes the splash-breaking of gas and improves the separation effect by setting structures such as high-pressure nozzles, stirring separators, and liquid baffle plates. Patent CN215463053U proposes an efficient gas-liquid separator, which uses a filter composed of wire mesh and multi-blades to reduce the volume of the separator, improve the filtration accuracy and return pipe, realize the secondary separation of the mixed fluid, improve the liquid phase residence time and separation effect, and reduce the device volume.

[0004] However, the residence time of the working medium in the existing gas-liquid separators is still relatively short, and the separation space is insufficient, resulting in low separation efficiency. The internal components of some improved gas-liquid separators are relatively complex, and even increase moving parts to improve the separation effect, greatly increasing the processing difficulty and maintenance cost.

[0005] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0006] In view of the above deficiencies of the existing technology, the purpose of the present invention is to provide a gas-liquid separator, aiming to solve the problems in the existing gas-liquid separators, such as short residence time of the working medium, insufficient separation space, resulting in low separation efficiency, and complex components, high processing difficulty, and high maintenance cost.

[0007] The technical solution of the present invention is as follows:

[0008] A gas-liquid separator includes an outer cylinder, an upper cover provided at one end of the outer cylinder, a lower cover provided at the other end of the outer cylinder, and internal components provided inside the outer cylinder; an air inlet pipe is provided on the cylinder wall of the outer cylinder, an air outlet pipe is provided on the upper cover, and a liquid discharge port is provided on the lower cover;

[0009] The internal components include:

[0010] A central tube, the central tube comprising an outer tube connected to the inner wall of the outer tube body, and an inner tube forming a double-layer sleeve structure with the outer tube; a sandwich is formed between the outer tube and the inner tube, and a leakage hole is provided at one end of the sandwich near the liquid discharge port; the inner tube is a hollow structure, open at the top and bottom;

[0011] A reflux cap, which is arranged at one end of the central tube close to the air outlet pipe and is spaced apart from the central tube;

[0012] A deflector tube, wherein the deflector tube is formed by extending one end of the return cap close to the air outlet pipe in a direction away from the central tube;

[0013] A liquid sealer, the liquid sealer is arranged at one end of the central tube close to the drain port and is spaced apart from the central tube; a central drain pipe is arranged in the middle of the reflux cap, and the central drain pipe passes through the hollow structure of the inner tube and extends into the liquid sealer; the leakage hole is connected by an interlayer drain pipe and extends into the liquid sealer;

[0014] A wire mesh is arranged on the inner wall of the outer cylinder, inside the deflector cylinder, and in an interlayer close to one end of the deflector cylinder.

[0015] In the gas-liquid separator, the central tube, the reflux cap, the deflector tube, the liquid seal and the wire mesh are all coaxially arranged with the central axis of the outer tube.

[0016] The gas-liquid separator, wherein the air inlet pipe is arranged on the side wall of the middle part of the outer cylinder, and extends along the tangent direction of the inner wall surface of the outer cylinder to pass into the interlayer formed by the outer cylinder and the outer tube.

[0017] The gas-liquid separator is described, wherein the air outlet pipe is coaxially arranged with the central axis of the outer cylinder, and one end close to the deflector tube extends toward the direction close to the deflector tube and is inserted into the wire mesh arranged in the deflector tube, and the other end away from the deflector tube extends toward the direction away from the deflector tube and passes through the upper cover.

[0018] In the gas-liquid separator, the liquid discharge port is coaxially arranged with the central axis of the outer cylinder, and one end away from the liquid seal extends away from the liquid seal and passes through the lower cover.

[0019] In the gas-liquid separator, the reflux cap is a round cover-type baffle structure, a top opening is provided on the top of the reflux cap, and the outer wall surface of the central drain pipe is tightly connected to the end surface of the top opening.

[0020] The described gas-liquid separator, wherein one end of the outer tube close to the reflux cap is inclinedly connected to the inner wall surface of the outer cylinder, and one end of the inner tube close to the reflux cap extends towards the reflux cap, such that one end of the interlayer formed between the inner tube and the outer tube close to the reflux cap is open.

[0021] The described gas-liquid separator, wherein the annular end surface of the interlayer close to the liquid seal is closed, and at least two liquid leakage holes are symmetrically arranged on the end surface along the axis of the central cylinder, and each liquid leakage hole is connected to a drain pipe of the interlayer.

[0022] The described gas-liquid separator, wherein gas channels are formed between the inner tube and the reflux cap, between the reflux cap and the inner wall of the outer cylinder, and between the baffle cylinder and the inner wall of the outer cylinder.

[0023] The described gas-liquid separator, wherein the baffle cylinder and the liquid seal are respectively connected to the inner wall of the outer cylinder through at least two support rods.

[0024] Beneficial effects: The present invention provides a gas-liquid separator. Firstly, through the design of the components inside the gas-liquid separator, the combination of centrifugal separation and conventional gravity separation is realized inside the gas-liquid separator, effectively enhancing the gas-liquid separation effect. At the same time, the design of the conventional centrifugal diversion spiral sheet is avoided, reducing the complexity of the device. Secondly, through the design of the reflux cap and the baffle cylinder, the secondary and tertiary separation of gas and liquid are realized, effectively improving the separation efficiency. Thirdly, through multiple baffle flows, the residence time of the gas inside the gas-liquid separator is prolonged, the separation space is increased, and the volume of the gas-liquid separator is reduced. At the same time, the collision and convergence of the liquid are enhanced, and the liquid carried by the gas discharged from the outlet pipe of the separator is reduced. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of a gas-liquid separator according to the present invention;

[0026] Figure 2 is a movement trajectory diagram of the gas inside the gas-liquid separator;

[0027] Description of the reference numerals: outer cylinder 10, inlet pipe 11, upper cover 20, outlet pipe 21, lower cover 30, drain port 31, central cylinder 40, outer tube 41, inner tube 42, interlayer 43, liquid leakage hole 431, drain pipe of the interlayer 432, reflux cap 50, central drain pipe 51, top opening 52, baffle cylinder 60, liquid seal 70, wire mesh 80, support rod 90, gas flow path indication line 100. Detailed Embodiments

[0028] The present invention provides a gas-liquid separator. To make the objectives, technical solutions and effects of the present invention clearer and more definite, the present invention will be further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] In the embodiments and the scope of the patent application, unless otherwise specifically defined in the text for articles, the words "a", "an", "the" and "said" may also include the plural forms. If there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0030] It should be further understood that the term "comprising" used in the description of the present invention means that there are the described features, integers, steps, operations, elements and / or components, but does not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0031] Those skilled in the art of the present technology can understand that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the field to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0032] Please refer to Figure 1 , the present invention provides a gas-liquid separator, including an outer cylinder body 10, an upper cover 20 provided at one end of the outer cylinder body 10, a lower cover 30 provided at the other end of the outer cylinder body 10, and an inner member provided inside the outer cylinder body 10; an intake pipe 11 is provided on the cylinder wall of the outer cylinder body 10, an outlet pipe 21 is provided on the upper cover 20, and a liquid discharge port 31 is provided on the lower cover 30;

[0033] The inner member includes:

[0034] a central cylinder 40, the central cylinder 40 includes an outer pipe 41 connected to the inner wall of the outer cylinder body 10, and an inner pipe 42 forming a double-layer sleeve structure with the outer pipe 41; a sandwich layer 43 is formed between the outer pipe 41 and the inner pipe 42, and a liquid leakage hole 431 is provided at one end of the sandwich layer 43 close to the liquid discharge port 31; the inner pipe 42 is a hollow structure and is open at both the upper and lower ends;

[0035] A reflux cap 50 is provided at one end of the central cylinder 40 close to the air outlet pipe 21 and is spaced from the central cylinder 40.

[0036] A baffle cylinder 60 extends from one end of the reflux cap 50 close to the air outlet pipe 21 in a direction away from the central cylinder 40.

[0037] A liquid seal 70 is provided at one end of the central cylinder 40 close to the liquid discharge port 31 and is spaced from the central cylinder 40. A central liquid discharge pipe 51 is provided in the middle of the reflux cap 50. The central liquid discharge pipe 51 passes through the hollow structure of the inner pipe 42 and extends into the liquid seal 70. The liquid leakage holes 431 are connected by an interlayer liquid discharge pipe 432 and extend into the liquid seal 70.

[0038] A wire mesh 80 is provided on the inner wall of the outer cylinder 10, inside the baffle cylinder 60, and in the interlayer 43 close to one end of the baffle cylinder 60.

[0039] The gas-liquid separator of this embodiment has the following advantages:

[0040] (1) Through the design of the internal components, the combination of centrifugal separation and conventional gravity separation is realized inside the gas-liquid separator, effectively enhancing the gas-liquid separation effect. At the same time, the design of the conventional centrifugal guide spiral fins is avoided, reducing the complexity of the gas-liquid separator.

[0041] (2) Through the design of the reflux cap and the baffle cylinder, the secondary and tertiary separation of gas and liquid is realized, effectively improving the separation efficiency.

[0042] (3) When the gas-liquid separator realizes gas-liquid separation, through multiple baffle flows, the residence time of the gas in the gas-liquid separator is extended, the separation space is increased, and the volume of the gas-liquid separator is reduced. At the same time, the collision and convergence of the liquid are enhanced, and the liquid carried by the gas at the outlet of the separator is reduced.

[0043] In some embodiments, the central cylinder 40, the reflux cap 50, the baffle cylinder 60, the liquid seal 70, and the wire mesh 80 are all coaxially arranged with the central axis of the outer cylinder 10. Since the gas-liquid separator adopts a combination of centrifugal separation and conventional gravity separation, arranging the central cylinder, the reflux cap, the baffle cylinder, the liquid seal, and the wire mesh coaxially with the central axis of the outer cylinder can improve the centrifugal effect on gas and liquid.

[0044] In some embodiments, the intake pipe 11 is disposed on the side wall of the middle part of the outer cylinder 10 and extends into the interlayer formed between the outer cylinder 10 and the outer pipe 41 along the tangential direction of the inner wall surface of the outer cylinder 10. Extending the intake pipe 11 into the outer cylinder 10 along the tangential direction of the inner wall surface of the outer cylinder 10 allows the gas to enter the middle of the gas-liquid separator from the intake pipe 11 along the tangential direction of the inner wall surface of the outer cylinder 10. Under the action of centrifugal force, the gas entering the gas-liquid separator first spirally descends along the inner wall surface of the outer cylinder 10.

[0045] Specifically, multiple layers of wire meshes 80 are arranged on the inner wall surface of the middle and lower sections of the outer cylinder 10. The gas entering the gas-liquid separator through the intake pipe 11 contacts the wire meshes 80 on the inner wall surface during the spiral descent along the inner wall surface of the outer cylinder 10. The liquid contained in the gas breaks, converges, and condenses on the surface of the wire meshes, and finally is trapped by the wire meshes 80 and flows along the inner wall surface of the outer cylinder 10 into the bottom of the gas-liquid separator. The separated gas then turns back upward from the lower part of the gas-liquid separator and enters the inner pipe 42 of the central cylinder 40.

[0046] In some embodiments, one end of the outer pipe 41 close to the reflux cap 50 is inclinedly connected to the inner wall surface of the outer cylinder 10, and one end of the inner pipe 42 close to the reflux cap 50 extends toward the reflux cap 50, so that one end of the interlayer 43 formed between the inner pipe 42 and the outer pipe 41 close to the reflux cap 50 is open, forming an open section, that is, forming a funnel structure.

[0047] Specifically, the central cylinder 40 is a double-layer sleeve structure and is coaxially arranged with the central axis of the outer cylinder 10; the inner pipe 42 is a hollow structure with openings at both the top and bottom and serves as a gas passage; the interlayer between the inner pipe and the outer pipe is the interlayer 43, and the interlayer 43 close to one end of the reflux cap 50 is open. The wall surface of the outer pipe is inclined and connected to the outer cylinder 10 for convenient liquid drainage; the wall surface of the inner pipe 42 extends vertically toward the reflux cap 50 to below the reflux cap 50. A gas passage is provided between the top end of the wall surface of the inner pipe 42 and the reflux cap for introducing the gas in the central cylinder 40 into the reflux cap 50; multiple layers of wire meshes 80 are arranged at the open section of the interlayer 43 for secondarily trapping the liquid carried by the gas; the lower section of the interlayer is arranged as parallel pipes and extends vertically downward to above the liquid seal 70 for returning the liquid collected during the secondary trapping of the gas to the liquid seal.

[0048] In some embodiments, the annular end face of the interlayer 43 near one end of the liquid seal 70 is closed, and at least two liquid leakage holes 431 are symmetrically formed on the end face along the central axis of the central cylinder 40. Each liquid leakage hole 431 is connected to a liquid discharge pipe 432 of the interlayer. Moreover, the liquid discharge pipe 432 of the interlayer extends downward into the liquid level in the liquid seal 70, and the liquid seal is used to prevent gas from escaping from the interlayer of the central cylinder 40.

[0049] Specifically, the liquid secondarily trapped by the wire mesh disposed at the interlayer 43 near one end of the reflux cap 50 first flows through the interlayer 43 to the lower end face, and then flows into the liquid seal 70 through the liquid leakage holes 431 and the liquid discharge pipe 432 of the interlayer.

[0050] In some embodiments, the reflux cap 50 is a round cover-shaped baffle structure, a top opening 52 is formed at the top of the reflux cap 50, and the outer wall surface of the central drain pipe 51 is hermetically connected to the end face of the top opening 52.

[0051] Specifically, the central drain pipe 51 passes through the top opening 52 of the reflux cap 50 and extends downward, and the outer wall surface of the central drain pipe is hermetically connected to the end face of the top opening of the reflux cap; the bottom of the reflux cap 50 is located directly above the inner pipe and is arranged in an open manner, and is used for turning back the gas from the inner pipe of the central cylinder to increase the residence time of the gas; a gas passage is provided between the bottom outer edge of the reflux cap 50 and the inner wall surface of the outer cylinder body 10. After being blocked by the reflux cap 50, the gas turns back and enters one end of the interlayer 43 near the reflux cap 50. After the liquid is secondarily trapped by the wire mesh in the interlayer, it is blocked by the wall surface of the outer pipe 41 and turns back upward again, and flows to the top of the gas-liquid separator through the channels between the bottom outer edge of the reflux cap 50 and the outer cylinder body and between the baffle cylinder and the outer cylinder body.

[0052] After the gas reaches the top of the gas-liquid separator, it is blocked by the wall surface and makes a 180-degree turn to enter the baffle cylinder 60; the baffle cylinder is a funnel structure, is coaxially arranged with the central axis of the outer cylinder body 10, and is connected to the outer cylinder body through at least two support rods. The bottom of the baffle cylinder is an inclined converging plate, and the center of the converging plate is connected to the central drain pipe 51; the central drain pipe extends downward into the liquid level in the liquid seal, and the liquid seal is used to prevent gas from escaping from the central drain pipe. The gas entering the baffle cylinder is trapped three times under the action of the wire mesh to further remove the contained liquid. The trapped liquid flows into the liquid seal 70 from the central drain pipe at the bottom, and the gas is blocked by the converging plate at the bottom of the baffle cylinder and turns, and finally is discharged from the gas outlet pipe at the top.

[0053] In some embodiments, the gas outlet pipe 21 is coaxially arranged with the central axis of the outer cylinder 10, and one end close to the baffle cylinder 60 extends toward the direction close to the baffle cylinder 60 and is inserted into the wire mesh 80 arranged in the baffle cylinder 60, and one end away from the baffle cylinder 60 extends away from the baffle cylinder 60 and passes through the upper cover 20. The gas outlet pipe 21 is inserted into the wire mesh 80 arranged in the baffle cylinder 60, so that the gas entering the baffle cylinder 60 can be finally captured, and after further removing the liquid contained, the gas is finally discharged from the gas outlet pipe at the top.

[0054] In some embodiments, the drain port is coaxially arranged with the central axis of the outer cylinder, and the end away from the liquid seal extends away from the liquid seal and passes through the lower cover. The liquid is discharged from the drain port at the bottom of the gas-liquid separator by gravity.

[0055] In some embodiments, gas channels are formed between the inner tube 42 and the reflux cap 50 , between the reflux cap 50 and the inner wall of the outer cylinder 10 , and between the deflector cylinder 60 and the inner wall of the outer cylinder 10 .

[0056] In some embodiments, the baffle cylinder and the liquid seal are connected to the inner wall of the outer cylinder 10 through at least two support rods 90. In a preferred embodiment, the baffle cylinder and the liquid seal are connected to the inner wall of the outer cylinder 10 through two support rods 90 respectively.

[0057] Specifically, the movement trajectory of the gas in the gas-liquid separator is as follows: Figure 2As shown, the specific flow path is as follows: referring to the reference gas flow path indication line 100, the gas enters the middle of the gas-liquid separator along the tangential direction of the inner wall surface of the outer cylinder 10 from the inlet pipe 11. Under the action of centrifugal force, it spirally descends along the inner wall surface of the outer cylinder 10. During the descending process, the gas contacts the wire mesh 80 arranged on the inner wall surface of the outer cylinder 10. The liquid contained in the gas is broken, converged, and condensed on the surface of the wire mesh, and finally is trapped by the wire mesh 80 and flows into the bottom of the gas-liquid separator along the inner wall surface of the outer cylinder 10. The separated gas then turns back upward from the lower part of the gas-liquid separator, enters the inner pipe 42 of the central cylinder 40, and flows upward along the inner pipe 42 to reach the reflux cap 50. After being blocked by the reflux cap 50, the gas turns back into the interlayer in the upper section of the central cylinder 40 along the channel between the inner pipe of the central cylinder 42 and the reflux cap 50. After the gas is secondarily trapped by the wire mesh in the interlayer, it is blocked by the wall surface of the outer pipe 41 of the central cylinder 40 and turns back upward again, and flows to the top of the gas-liquid separator through the channels between the outer edge of the bottom of the reflux cap 50 and the outer cylinder 10 and between the baffle cylinder 60 and the outer cylinder 10. The liquid trapped by the wire mesh in the interlayer of the central cylinder 40 first flows to the annular lower end surface through the interlayer, and then enters the liquid seal 70 through the liquid leakage holes 431 and the interlayer drain pipe 432. After the gas after secondary separation reaches the top of the gas-liquid separator, it is blocked by the wall surface and makes a 180-degree turn, enters the baffle cylinder 60, and is thirdly trapped under the action of the wire mesh 80 to further remove the contained liquid. The trapped liquid flows into the liquid seal 70 from the bottom central drain pipe 51, and the gas is blocked and turned by the confluence plate at the bottom of the baffle cylinder 60 and finally discharged from the outlet pipe 21 at the top.

[0058] In summary, the present invention provides a gas-liquid separator. First, through the design of the internal components of the gas-liquid separator, the combination of centrifugal separation and conventional gravity separation is realized inside the gas-liquid separator, effectively enhancing the gas-liquid separation effect. At the same time, the design of the conventional centrifugal diversion spiral fins is avoided, reducing the complexity of the device. Second, through the design of the reflux cap and the baffle cylinder, the secondary and tertiary separation of gas and liquid is realized, effectively improving the separation efficiency. Third, through multiple bends, the residence time of the gas in the gas-liquid separator is extended, the separation space is increased, and the volume of the gas-liquid separator is reduced. At the same time, the collision and convergence of the liquid are enhanced, and the liquid carried by the gas discharged from the outlet pipe of the separator is reduced.

[0059] It should be understood that the application of the present invention is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A gas-liquid separator, characterized in that, It comprises an outer cylinder, an upper cover arranged at one end of the outer cylinder, a lower cover arranged at the other end of the outer cylinder and an inner member arranged inside the outer cylinder; an air inlet pipe is arranged on the cylinder wall of the outer cylinder, an air outlet pipe is arranged on the upper cover, and a liquid discharge port is arranged on the lower cover; The internal components include: A central tube, the central tube comprising an outer tube connected to the inner wall of the outer tube body, and an inner tube forming a double-layer sleeve structure with the outer tube; a sandwich is formed between the outer tube and the inner tube, and a leakage hole is provided at one end of the sandwich near the liquid discharge port; the inner tube is a hollow structure, open at the top and bottom; A reflux cap, which is arranged at one end of the central tube close to the air outlet pipe and is spaced apart from the central tube; A deflector tube, wherein the deflector tube is formed by extending one end of the return cap close to the air outlet pipe in a direction away from the central tube; A liquid sealer, the liquid sealer is arranged at one end of the central tube close to the drain port and is spaced apart from the central tube; a central drain pipe is arranged in the middle of the reflux cap, and the central drain pipe passes through the hollow structure of the inner tube and extends into the liquid sealer; the leakage hole is connected by an interlayer drain pipe and extends into the liquid sealer; A wire mesh, the wire mesh is arranged on the inner wall of the outer cylinder, inside the baffle cylinder, and in an interlayer close to one end of the baffle cylinder; The central tube, the return cap, the deflector tube, the liquid seal and the wire mesh are all coaxially arranged with the central axis of the outer tube; the deflector tube and the liquid seal are respectively connected to the inner wall of the outer tube through at least two support rods.

2. The gas-liquid separator according to claim 1, wherein The air inlet pipe is arranged on the side wall of the middle part of the outer cylinder, and extends along the tangent direction of the inner wall surface of the outer cylinder to pass into the sandwich formed by the outer cylinder and the outer tube.

3. The gas-liquid separator according to claim 1, characterized in that, The air outlet pipe is coaxially arranged with the central axis of the outer cylinder, and one end close to the deflector tube extends toward the direction close to the deflector tube and is inserted into the wire mesh arranged in the deflector tube, and the other end away from the deflector tube extends away from the deflector tube and passes through the upper cover.

4. The gas-liquid separator according to claim 1, characterized in that, The liquid discharge port is coaxially arranged with the central axis of the outer cylinder, and one end away from the liquid seal extends away from the liquid seal and passes through the lower cover.

5. The gas-liquid separator according to claim 1, characterized in that, The reflux cap is a round cover-type baffle structure, a top opening is provided on the top of the reflux cap, and the outer wall surface of the central drainage pipe is tightly connected to the end surface of the top opening.

6. The gas-liquid separator according to claim 1, characterized in that One end of the outer tube close to the reflux cap is connected to the inner wall of the outer cylinder at an angle, and one end of the inner tube close to the reflux cap extends toward the reflux cap, so that the sandwich formed by the inner tube and the outer tube is open at one end close to the reflux cap.

7. The gas-liquid separator according to claim 1, characterized in that, The annular end surface of the interlayer close to one end of the liquid sealer is closed, and at least two leakage holes are symmetrically provided on the end surface along the central axis of the central tube, and each of the leakage holes is connected to an interlayer drainage pipe.

8. The gas-liquid separator according to claim 1, wherein, Gas channels are formed between the inner tube and the reflux cap, between the reflux cap and the inner wall of the outer cylinder, and between the deflector tube and the inner wall of the outer cylinder.

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