A gas-liquid separation device

Abstract

The present application discloses a gas-liquid separation device, including a first separation cylinder, a second separation cylinder, an inner cone, an input pipeline, a flow splitter assembly, a liquid output pipeline and a gas output pipeline; a first spiral plate is arranged between the first separation cylinder and the second separation cylinder; a second spiral plate is arranged between the second separation cylinder and the inner cone; the spiral directions of the first spiral plate and the second spiral plate are opposite; the input pipeline sequentially passes through the first separation cylinder and the second separation cylinder; the flow splitter assembly is arranged inside the input pipeline; the liquid output pipeline and the gas output pipeline are arranged at the bottom and top of the first separation cylinder. The present application realizes the ability to separate the fluid entering the gas-liquid separator into two streams, and to perform the first centrifugal separation of the two streams of fluids by downward rotation separately, and to form a second impact separation by convection impact after the downward rotation separation of the two streams of fluids, and finally the rising gas will be separated from the liquid for the third time by the gravity principle under the action of the inner cone, which effectively improves the separation effect.

Description

Technical Field

[0001] The present application relates to the technical field of gas-liquid separation, and in particular to a gas-liquid separation device. Background Art

[0002] The main function of the gas-liquid separator is to remove the liquid substances entrained in the gas. The gas-liquid separator generally includes an inlet, a gas outlet and a liquid outlet. Among them, the inlet is located at the side, the gas outlet is located at the top, and the liquid outlet is located at the bottom. The inlet is used to receive a mixed fluid of gas and liquid.

[0003] Traditional gas-liquid separators mainly use the principle of gravity to separate gas and liquid, that is, after the mixed fluid enters the gas-liquid separator from the inlet, due to the different gravity of liquid and gas, the gas will move upward and flow out of the gas-liquid separator through the gas outlet, while the liquid will move downward and flow out of the gas-liquid separator through the liquid outlet. However, the amount of liquid droplets entrained in the gas separated by gravity separation in the prior art is large, and the separation effect is not good. Summary of the invention

[0004] The present application provides a gas-liquid separation device, which solves the technical problem that the gas-liquid separator in the prior art mainly uses the principle of gravity to separate gas and liquid, resulting in a large amount of droplets entrained in the separated gas and a poor separation effect. The present application realizes the ability to separate the fluid entering the gas-liquid separator into two streams, and to perform a first centrifugal separation on the two streams separately by downward rotation, and to form a second impact separation by convective impact after the downward rotation separation of the two streams. Finally, the rising gas will be separated from the liquid for a third time by the principle of gravity under the action of the inner cone, thereby effectively improving the separation effect.

[0005] In the first aspect, the present application provides a gas-liquid separation device, comprising a first separation cylinder, a second separation cylinder, an inner cone cylinder, an input pipeline, a diversion assembly, a liquid output pipeline and a gas output pipeline; the second separation cylinder is arranged inside the first separation cylinder, and a first spiral plate is arranged between the inner wall of the first separation cylinder and the outer wall of the second separation cylinder; the inner cone cylinder is arranged inside the second separation cylinder, and a second spiral plate is arranged between the inner wall of the second separation cylinder and the outer wall of the inner cone cylinder; the top ends of the first spiral plate and the second spiral plate are at the same height and are both located directly below the input pipeline, and the spiral directions of the first spiral plate and the second spiral plate are opposite; the bottom end of the second separation cylinder is adjacent to the inner cone cylinder The bottom ends are connected with the interior of the first separation cylinder; the input pipeline passes through the first separation cylinder and the second separation cylinder in sequence, and the side wall between the first separation cylinder and the second separation cylinder where the input pipeline extends is provided with a first diversion port, and the end of the input pipeline extending into the second separation cylinder is provided with a second diversion port; the diversion component is arranged inside the input pipeline, and can divide the fluid in the input pipeline into two streams and enter the first spiral plate and the second spiral plate respectively through the first diversion port and the second diversion port; the liquid output pipeline is arranged at the bottom end of the first separation cylinder; the gas output pipeline is arranged at the top end of the first separation cylinder and is connected with the interior of the inner cone.

[0006] In combination with the first aspect, in a possible implementation, the diverter assembly includes a block, a diverter plate and an arc plate; the block is fixedly connected to the inner side of the end of the input pipeline extending into the second separation cylinder, and can block half of the flow rate at the end of the input pipeline; the diverter plate is located at the axial centerline position of the input pipeline and is fixedly connected to the block, and the cross-section of the diverter plate is an isosceles triangle; the side of the block close to the first diverter port is set as an arc surface, and the two ends of the arc surface are smoothly connected with the block and the first diverter port respectively; the arc plate is set between the second separation cylinder and the inner cone, and the two ends of the arc plate are smoothly connected with the second diverter port and the inner cone respectively.

[0007] In combination with the first aspect, in a possible implementation, a gas-liquid separation device provided in the present application also includes a buffer assembly; the buffer assembly includes a conical baffle and a support rod; the conical baffle is located directly below the inner cone cylinder and is fixedly connected to the bottom inner wall of the first separation cylinder through the support rod; the bottom surface area of ​​the conical baffle is larger than the outer diameter of the second separation cylinder.

[0008] In combination with the first aspect, in a possible implementation, the bottom ends of the first spiral plate and the second spiral plate are at the same height and are respectively located on both sides of the bottom end of the inner cone, so that the two fluids rotating downward from the first spiral plate and the second spiral plate can form a convection trend.

[0009] In combination with the first aspect, in a possible implementation, a conical channel is opened inside the inner cone, and a plurality of fin plates are arranged at intervals from bottom to top on the inner side of the conical channel.

[0010] In combination with the first aspect, in a possible implementation, a first through hole and a second through hole are respectively provided on the outer sides of the top ends of the first separation cylinder and the second separation cylinder; the input pipeline respectively extends into the first through hole and the second through hole and is fixedly connected to the first through hole and the second through hole.

[0011] In the second aspect, the present application provides a gas-liquid separation method, comprising: connecting an external pump with an input pipeline, and inputting the fluid to be separated into the input pipeline, while connecting an external negative pressure device with a gas output pipeline, and starting the external negative pressure device; the fluid entering the input pipeline is divided into two streams by the diversion component, and enters the upper surfaces of the first spiral plate and the second spiral plate from the first diversion port and the second diversion port respectively; the fluid divided into two streams then rotates downward along the first spiral plate and the second spiral plate in sequence, and the centrifugal force generated by multiple downward rotations effectively separates the liquid and the gas, thereby realizing the first separation of gas and liquid in a single stream of fluid; the two streams of fluid rotate in opposite directions on the upper surfaces of the first spiral plate and the second spiral plate, so that when the two streams of fluid flow out from the bottom ends of the first spiral plate and the second spiral plate , which can form a convection trend inside the bottom end of the first separation cylinder, so that the two fluids form an impact force again after the downward rotation separation, and the impact force facilitates the re-separation of gas and liquid; the separated liquid and gas finally converge at the bottom ends of the first spiral plate and the second spiral plate, and the liquid is output from the bottom end of the first separation cylinder through the liquid output pipeline, and the gas continues to rise to the inside of the inner cone, and is finally extracted from the gas output pipeline at the top of the inner cone through the negative pressure device; in the process of gradually rising along the inside of the inner cone, the gas will still entrain a small amount of unseparated liquid, and some of the unseparated liquid will contact the inner wall of the inner cone during the rising process and be adhered to the inner wall of the inner cone, and then finally drip down again through gravity and be output from the liquid output pipeline, so that the gas and liquid are separated for the third time.

[0012] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0013] The present application adopts a first separation cylinder, a second separation cylinder, an inner cone cylinder, an input pipeline, a flow splitter assembly, a liquid output pipeline and a gas output pipeline, and respectively arranges a first spiral plate and a second spiral plate in the first separation cylinder and the second separation cylinder. Firstly, the fluid input into the input pipeline can be divided into two streams by the flow splitter assembly, and then the two streams of fluid are respectively separated by downward rotation through the first spiral plate and the second spiral plate in sequence, and the single stream of fluid is downwardly rotated and the gas-liquid separation in the single stream of fluid is made more thorough by the action of centrifugal force, thereby realizing the first separation of gas and liquid in the single stream of fluid;

[0014] Furthermore, the downward rotation directions of the first spiral plate and the second spiral plate are opposite, so that the two fluids rotate downward in opposite directions on the upper surfaces of the first spiral plate and the second spiral plate, so that when the two fluids flow out from the bottom ends of the first spiral plate and the second spiral plate, a convection trend can be formed inside the bottom end of the first separation cylinder, so that the two fluids form an impact force again after the downward rotation separation, and the impact force facilitates the separation of gas and liquid again, that is, the bubbles entrained in the liquid can be effectively separated;

[0015] The separated gas will gradually rise along the inside of the inner cone at the bottom of the inner cone, and will still carry a small amount of unseparated liquid during the rising process. Some of the unseparated liquid will contact the inner wall of the inner cone during the rising process and adhere to the inner wall of the inner cone, and then finally drip down again by gravity and be output from the liquid output pipeline, so that the gas and liquid form a third separation;

[0016] The invention effectively solves the technical problem that the gas-liquid separator in the prior art mainly uses the principle of gravity to separate gas and liquid, resulting in a large amount of droplets entrained in the separated gas and a poor separation effect. The invention realizes the ability to separate the fluid entering the gas-liquid separator into two streams, and separately perform the first centrifugal separation of the two streams by downward rotation, and form a second impact separation by convection impact after the downward rotation separation of the two fluids. Finally, the rising gas will be separated from the liquid for the third time by the principle of gravity under the action of the inner cone, thereby effectively improving the separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 An axonometric diagram of a gas-liquid separation device provided in an embodiment of the present application;

[0019] Figure 2A top view of a gas-liquid separation device provided in an embodiment of the present application;

[0020] Figure 3 for Figure 2 Sectional view in the AA direction;

[0021] Figure 4 A front view of a gas-liquid separation device provided in an embodiment of the present application;

[0022] Figure 5 for Figure 4 Cross-sectional view in the BB direction;

[0023] Figure 6 An axonometric diagram of a gas-liquid separation device provided in an embodiment of the present application with the input pipeline and the top cover of the first separation cylinder removed;

[0024] Figure 7 for Figure 6 Axonometric drawing when the first separation cylinder is removed;

[0025] Figure 8 for Figure 7 Axonometric view when the first spiral plate is removed and the second separation cylinder is dismantled upward;

[0026] Fig. 9 for Figure 6 Axonometric drawing showing the second separation cylinder being removed upwards.

[0027] Figure markings: 1-first separation cylinder; 11-first through hole; 2-second separation cylinder; 21-second through hole; 3-inner cone; 31-conical channel; 32-fin plate; 4-input pipeline; 41-first diversion port; 42-second diversion port; 5-diversion assembly; 51-block; 511-arc surface; 52-diversion plate; 53-arc plate; 6-liquid output pipeline; 7-gas output pipeline; 8-first spiral plate; 9-second spiral plate; 10-buffer assembly; 101-conical baffle; 102-support rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0030] Reference Figure 1-9, a gas-liquid separation device provided in an embodiment of the present application comprises a first separation cylinder 1, a second separation cylinder 2, an inner cone cylinder 3, an input pipeline 4, a flow dividing assembly 5, a liquid output pipeline 6 and a gas output pipeline 7; the second separation cylinder 2 is arranged inside the first separation cylinder 1, and a first spiral plate 8 is arranged between the inner wall of the first separation cylinder 1 and the outer wall of the second separation cylinder 2; the inner cone cylinder 3 is arranged inside the second separation cylinder 2, and a second spiral plate 9 is arranged between the inner wall of the second separation cylinder 2 and the outer wall of the inner cone cylinder 3; the top ends of the first spiral plate 8 and the second spiral plate 9 are at the same height, and both are located directly below the input pipeline 4, and the spiral directions of the first spiral plate 8 and the second spiral plate 9 are opposite; the bottom end of the second separation cylinder 2 and the bottom end of the inner cone cylinder 3 are both connected to the interior of the first separation cylinder 1; the input pipeline 4 passes through the first separation cylinder 1 in sequence and the second separation cylinder 2, and the side wall between the input pipeline 4 extending into the first separation cylinder 1 and the second separation cylinder 2 is provided with a first diversion port 41, and the end of the input pipeline 4 extending into the second separation cylinder 2 is provided with a second diversion port 42; the diversion component 5 is arranged inside the input pipeline 4, and can divide the fluid in the input pipeline 4 into two streams and enter the first spiral plate 8 and the second spiral plate 9 respectively through the first diversion port 41 and the second diversion port 42; the liquid output pipeline 6 is arranged at the bottom end of the first separation cylinder 1; the gas output pipeline 7 is arranged at the top end of the first separation cylinder 1 and is connected with the interior of the inner cone cylinder 3, the bottom ends of the first spiral plate 8 and the second spiral plate 9 are at the same height, and are respectively located on both sides of the bottom end of the inner cone cylinder 3, which can make the two fluids rotating downward from the first spiral plate 8 and the second spiral plate 9 form a convection trend.When performing gas-liquid separation in the embodiment of the present application, it is necessary to use an external pump and an external negative pressure device, that is, to connect the external pump to the input pipeline 4, so that the fluid to be separated can be input into the input pipeline 4, and at the same time, the external negative pressure device is connected to the gas output pipeline 7, so that negative pressure can be formed in the inner cone 3 and the first separation cylinder 1, so that the separated gas is extracted from the top of the inner cone 3, and the first spiral plate 8 is sealed and fixedly connected to the first separation cylinder 1 and the second separation cylinder 2, and the second spiral plate 9 is sealed and fixedly connected to the second separation cylinder 2 and the inner cone 3; the specific separation process is that the fluid entering the input pipeline 4 is divided into two streams through the diversion component 5, and enters the upper surfaces of the first spiral plate 8 and the second spiral plate 9 from the first diversion port 41 and the second diversion port 42 respectively; the fluid divided into two streams then rotates downward along the first spiral plate 8 and the second spiral plate 9 in turn, and the centrifugal force generated by multiple downward rotations effectively separates the liquid and the gas, thereby realizing the first separation of gas and liquid in a single stream of fluid, and the division into two streams can effectively improve the subsequent The gas-liquid separation effect of the continuous fluid is improved; the two fluids rotate downward in opposite directions on the upper surfaces of the first spiral plate 8 and the second spiral plate 9, so that when the two fluids flow out from the bottom ends of the first spiral plate 8 and the second spiral plate 9, a convection trend can be formed inside the bottom end of the first separation cylinder 1, so that the two fluids form an impact force again after the downward rotation separation, and the impact force facilitates the gas-liquid to separate again; the separated liquid and gas finally converge at the bottom ends of the first spiral plate 8 and the second spiral plate 9, and the liquid is output from the bottom end of the first separation cylinder 1 through the liquid output pipeline 6, and the gas continues to rise to the inside of the inner cone 3, and is finally extracted from the gas output pipeline 7 at the top of the inner cone 3 through the negative pressure device; in the process of gradually rising along the inside of the inner cone 3, the gas will still entrain a small amount of unseparated liquid, and some of the unseparated liquid will contact the inner wall of the inner cone 3 during the rising process and be adhered to the inner wall of the inner cone 3, and then finally drip down again by gravity and be output from the liquid output pipeline 6, so that the gas and liquid are separated for the third time.

[0031] Reference Figure 5The flow dividing assembly 5 includes a block 51, a flow dividing plate 52 and an arc plate 53; the block 51 is fixedly connected to the inner side of the end of the input pipeline 4 extending into the second separation cylinder 2, and can block half of the flow volume at the end of the input pipeline 4; the flow dividing plate 52 is located at the axial center line position of the input pipeline 4 and is fixedly connected to the block 51, and the cross-section of the flow dividing plate 52 is an isosceles triangle; the side of the block 51 close to the first flow dividing port 41 is set as an arc surface 511, and the two ends of the arc surface 511 are smoothly connected with the block 51 and the first flow dividing port 41 respectively; the arc plate 53 is set between the second separation cylinder 2 and the inner cone cylinder 3, and the two ends of the arc plate 53 are smoothly connected with the second flow dividing port 42 and the inner cone cylinder 3 respectively. The embodiment of the present application specifically provides a flow dividing assembly 5 including a block 51, a flow dividing plate 52 and an arc plate 53, wherein the cross section of the flow dividing plate 52 is an isosceles triangle, so that the flow dividing plate 52 can cut the fluid into two streams, one of which flows along one side of the isosceles triangle to the arc surface 511 set on the block 51, and finally enters between the first separation cylinder 1 and the second separation cylinder 2 through the first flow dividing port 41 along the arc surface 511, and then performs a downward spiral separation movement along the first spiral plate 8; the other fluid flows along the other side of the isosceles triangle to the arc surface 511 set on the block 51, and finally enters between the first separation cylinder 1 and the second separation cylinder 2 through the first flow dividing port 41 along the arc surface 511, and then performs a downward spiral separation movement along the first spiral plate 8; the other fluid flows along the other side of the isosceles triangle to the arc surface 511 set on the block 51, and finally enters between the first separation cylinder 1 and the second separation cylinder 2 through the first flow dividing port 41 to .... It flows laterally and flows from the space between the block 51 and the inner side of the input pipeline 4 to the second diversion port 42, and then enters between the second separation cylinder 2 and the inner cone cylinder 3 from the second diversion port 42, and then continues to turn along the arc plate 53, and finally performs a downward rotation separation movement along the second spiral plate 9 in the opposite direction of the first spiral plate 8, and finally the first spiral plate 8 and the second spiral plate 9 can respectively perform separate downward rotation centrifugal separation on the two fluids, thereby effectively improving the separation effect; wherein the arc plate 53 and the block 51 can be connected in an integral manner or in a split manner.

[0032] Reference Figure 3 , a gas-liquid separation device provided in the embodiment of the present application also includes a buffer assembly 10; the buffer assembly 10 includes a conical baffle 101 and a support rod 102; the conical baffle 101 is located directly below the inner cone 3 and is fixedly connected to the inner wall of the bottom end of the first separation cylinder 1 through the support rod 102; the bottom surface area of ​​the conical baffle 101 is larger than the outer diameter of the second separation cylinder 2. In the embodiment of the present application, a buffer assembly 10 is further provided, the main purpose of which is to enable the fluid separated by the downward rotation of the first spiral plate 8 and the second spiral plate 9 to be blocked and buffered on the conical baffle 101, mainly to block the flow direction of the gas and bend it upward, so that the gas can smoothly enter the interior of the inner cone 3 and gradually rise and be output from the gas output pipeline 7; at the same time, the two fluids blocked on the conical baffle 101 can form a convection impact on the conical baffle 101, further improving the gas-liquid separation effect, and the separated liquid after the impact flows down along the conical surface of the conical baffle 101 by gravity, and finally output from the liquid output pipeline 6.

[0033] Reference Figure 3 A conical channel 31 is provided inside the inner cone 3, and a plurality of fins 32 are arranged at intervals from bottom to top on the inner side of the conical channel 31. In the embodiment of the present application, it is further considered that the gas separated by downward rotation will still carry less liquid in the process of rising from the inner cone 3, so a plurality of fins 32 are further arranged in the conical channel 31 inside the inner cone 3 to increase the contact area, so that a small amount of liquid carried by the gas in the process of rising will be blocked in the fins 32 and the conical channel 31, and the blocked liquid will eventually drip back to the bottom end of the first separation cylinder 1 by gravity and be output from the liquid output pipeline 6, further improving the gas-liquid separation effect.

[0034] Reference Figure 6-9 A first through hole 11 and a second through hole 21 are respectively provided on the outer sides of the top ends of the first separation cylinder 1 and the second separation cylinder 2; the input pipeline 4 extends into the first through hole 11 and the second through hole 21 respectively, and is fixedly connected to the first through hole 11 and the second through hole 21.

[0035] The embodiment of the present application provides a gas-liquid separation method, comprising: connecting an external pump with an input pipeline 4, and inputting a fluid to be separated into the input pipeline 4, connecting an external negative pressure device with a gas output pipeline 7, and starting the external negative pressure device; the fluid entering the input pipeline 4 is divided into two streams by a diversion component 5, and enters the upper surfaces of the first spiral plate 8 and the second spiral plate 9 from the first diversion port 41 and the second diversion port 42 respectively; the divided fluid then rotates downward along the first spiral plate 8 and the second spiral plate 9 in sequence, and the centrifugal force generated by the multiple downward rotations effectively separates the liquid and the gas, thereby realizing the first separation of gas and liquid in a single stream of fluid; the two streams of fluid rotate downward in opposite directions on the upper surfaces of the first spiral plate 8 and the second spiral plate 9, so that when the two streams of fluid flow out from the bottom ends of the first spiral plate 8 and the second spiral plate 9, A convection trend can be formed inside the bottom end of the first separation cylinder 1, so that the two fluids form an impact force again after the downward rotation separation, and the impact force facilitates the re-separation of gas and liquid; the separated liquid and gas finally converge at the bottom ends of the first spiral plate 8 and the second spiral plate 9, and the liquid is output from the bottom end of the first separation cylinder 1 through the liquid output pipeline 6, and the gas continues to rise to the inside of the inner cone cylinder 3, and is finally extracted from the gas output pipeline 7 at the top of the inner cone cylinder 3 through the negative pressure device; in the process of gradually rising along the inside of the inner cone cylinder 3, the gas will still entrain a small amount of unseparated liquid, and some of the unseparated liquid will contact the inner wall of the inner cone cylinder 3 during the rising process and be adhered to the inner wall of the inner cone cylinder 3, and then finally drip down again through gravity, and be output from the liquid output pipeline 6, so that the gas and liquid are separated for the third time.

[0036] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A gas-liquid separation device, characterized in that: It comprises a first separation cylinder (1), a second separation cylinder (2), an inner cone cylinder (3), an input pipeline (4), a flow splitting component (5), a liquid output pipeline (6) and a gas output pipeline (7); The second separation cylinder (2) is arranged inside the first separation cylinder (1), and a first spiral plate (8) is arranged between the inner wall of the first separation cylinder (1) and the outer wall of the second separation cylinder (2); The inner cone cylinder (3) is arranged inside the second separation cylinder (2), and a second spiral plate (9) is arranged between the inner wall of the second separation cylinder (2) and the outer wall of the inner cone cylinder (3); The top ends of the first spiral plate (8) and the second spiral plate (9) are at the same height and are both located directly below the input pipeline (4); the spiral directions of the first spiral plate (8) and the second spiral plate (9) are opposite; The bottom end of the second separation cylinder (2) and the bottom end of the inner cone cylinder (3) are both connected to the interior of the first separation cylinder (1); The input pipeline (4) passes through the first separation cylinder (1) and the second separation cylinder (2) in sequence, and a first flow diversion opening (41) is provided at the side wall where the input pipeline (4) extends into the first separation cylinder (1) and the second separation cylinder (2), and a second flow diversion opening (42) is provided at the end where the input pipeline (4) extends into the second separation cylinder (2); The flow splitting component (5) is arranged inside the input pipeline (4) and can split the fluid in the input pipeline (4) into two streams and respectively enter the first spiral plate (8) and the second spiral plate (9) through the first flow splitting port (41) and the second flow splitting port (42). The two streams of fluid spiral downward in opposite directions on the upper surfaces of the first spiral plate (8) and the second spiral plate (9), so that when the two streams of fluid flow out from the bottom ends of the first spiral plate (8) and the second spiral plate (9), a convection trend can be formed inside the bottom end of the first separation cylinder (1); The liquid output pipeline (6) is arranged through the bottom end of the first separation cylinder (1); The gas output pipeline (7) is arranged through the top of the first separation cylinder (1) and is in communication with the interior of the inner conical cylinder (3).

2. The gas-liquid separation device according to claim 1, characterized in that: The flow splitter assembly (5) comprises a stopper (51), a flow splitter plate (52) and an arc-shaped plate (53); The stopper (51) is fixedly connected to the inner side of the end of the input pipeline (4) extending into the second separation cylinder (2), and is capable of blocking half of the flow rate at the end of the input pipeline (4); The diverter plate (52) is located at the axial centerline of the input pipeline (4) and is fixedly connected to the stopper (51); the cross section of the diverter plate (52) is an isosceles triangle; The side surface of the stopper (51) close to the first diversion opening (41) is arranged as an arc-shaped surface (511), and two ends of the arc-shaped surface (511) are respectively smoothly connected to the stopper (51) and the first diversion opening (41); The arc-shaped plate (53) is arranged between the second separation cylinder (2) and the inner conical cylinder (3), and two ends of the arc-shaped plate (53) are smoothly connected to the second flow diversion port (42) and the inner conical cylinder (3) respectively.

3. The gas-liquid separation device according to claim 1, characterized in that: Also included is a buffer component (10); The buffer assembly (10) comprises a conical baffle (101) and a support rod (102); The conical baffle (101) is located directly below the inner conical cylinder (3) and is fixedly connected to the inner wall of the bottom end of the first separation cylinder (1) via the support rod (102); The bottom surface area of ​​the conical baffle (101) is larger than the outer diameter of the second separation cylinder (2).

4. The gas-liquid separation device according to claim 1, characterized in that: The bottom ends of the first spiral plate (8) and the second spiral plate (9) are at the same height and are located on both sides of the bottom end of the inner cone (3), respectively, so that the two fluids spiraling downward from the first spiral plate (8) and the second spiral plate (9) can form a convection trend.

5. The gas-liquid separation device according to claim 1, characterized in that: A conical channel (31) is provided inside the inner conical cylinder (3), and a plurality of fin plates (32) are arranged at intervals from bottom to top on the inner side of the conical channel (31).

6. The gas-liquid separation device according to claim 1, characterized in that: A first through hole (11) and a second through hole (21) are respectively provided on the outer sides of the top ends of the first separation cylinder (1) and the second separation cylinder (2); The input pipeline (4) extends into the first through hole (11) and the second through hole (21) respectively, and is fixedly connected to the first through hole (11) and the second through hole (21).

7. A gas-liquid separation method, based on the gas-liquid separation device according to any one of claims 1 to 6, characterized in that: include: Connecting an external pump to the input pipeline (4) and inputting the fluid to be separated into the input pipeline (4), while connecting an external negative pressure device to the gas output pipeline (7) and starting the external negative pressure device; The fluid entering the input pipeline (4) is divided into two streams through the flow splitting component (5), and enters the upper surfaces of the first spiral plate (8) and the second spiral plate (9) from the first flow splitting port (41) and the second flow splitting port (42) respectively; The fluid divided into two streams then rotates downward in sequence along the first spiral plate (8) and the second spiral plate (9), and the centrifugal force generated by the multiple downward rotations effectively separates the liquid from the gas, thereby achieving the first separation of gas and liquid in the single stream of fluid; The two fluids rotate downward in opposite directions on the upper surfaces of the first spiral plate (8) and the second spiral plate (9), so that when the two fluids flow out from the bottom ends of the first spiral plate (8) and the second spiral plate (9), a convection trend can be formed inside the bottom end of the first separation cylinder (1), so that the two fluids form an impact force again after the downward rotation separation, and the impact force facilitates the re-separation of gas and liquid; The separated liquid and gas finally converge at the bottom ends of the first spiral plate (8) and the second spiral plate (9), and the liquid is discharged from the bottom end of the first separation cylinder (1) through the liquid output pipeline (6), and the gas continues to rise to the inside of the inner cone cylinder (3), and is finally extracted from the gas output pipeline (7) at the top end of the inner cone cylinder (3) through the negative pressure device; As the gas gradually rises along the interior of the inner cone (3), it will still carry a small amount of unseparated liquid. During the rising process, some of the unseparated liquid will contact the inner wall of the inner cone (3) and adhere to the inner wall of the inner cone (3), and then finally drip down again due to gravity and be output from the liquid output pipeline (6), so that the gas and liquid are separated for the third time.

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