Gas-liquid separator

Abstract

The utility model discloses a gas-liquid separator, and belongs to the technical field of flash evaporation equipment, the gas-liquid separator comprises a main cylinder, the main cylinder is provided with a fluid inlet, a fluid outlet and a separated matter outlet, the main cylinder is provided with a first end and a second end which are opposite, the first end is higher than the second end, the fluid outlet is located at the first end of the main cylinder, and the separated matter outlet is located at the second end of the main cylinder; a cavity is formed in the main cylinder body; the separation cylinder is arranged in the cavity, a gap used for containing hot fluid is formed between the separation cylinder and the main cylinder body, the separation cylinder is provided with an air inlet and outlet end and a liquid outlet end which are opposite, the air inlet and outlet end is higher than the liquid outlet end, the air inlet and outlet end is communicated with the fluid inlet and the fluid outlet, and the liquid outlet end is communicated with the separated matter outlet. The gas and the glue solution after flash separation can be effectively treated, the glue solution harmful to a gas phase system is removed, the operation stability is improved, and the operation period is prolonged.

Description

Technical Field

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

[0002] Flash separation is a commonly used physical separation technology. The basic principle is to use the instantaneous evaporation of liquid under reduced pressure conditions to separate different components in the mixture. Flash separation is usually used to separate volatile substances from non-volatile substances, or to separate liquid mixtures with different boiling points. Polyolefin elastomer is a high-performance polyolefin that is rubber-elastic at room temperature. The polyolefin elastomer (POE) device mainly uses the solution method to produce polyolefin elastomer (POE). The flash separation system is one of its key components. The mixed liquid carrying polyolefin elastomer is separated by flash evaporation.

[0003] In the prior art, the reaction products (ethylene, octene, hexane, POE) enter the flash tank for flash separation. After the flash separation, the separated gas phase components will carry a small amount of POE glue liquid. The POE glue liquid enters the subsequent system and accumulates to cause blockage, resulting in the device being unable to operate smoothly. The device needs to be shut down to clear the blockage in time, and the maintenance cost is high.

[0004] How to effectively purify the POE glue residue in the gas phase components is an urgent problem that needs to be solved to ensure the long-term stable operation of the production equipment. Utility Model Content

[0005] The present application aims to at least to some extent solve the technical problem of residual POE glue liquid in the gas phase combination after flash evaporation separation. To this end, the present application provides a gas-liquid separator that can effectively separate the gas and glue liquid after flash evaporation separation, remove the glue liquid that is harmful to the gas phase system, improve the operating stability, and extend the operating cycle.

[0006] The present application provides a gas-liquid separator, which includes:

[0007] The main cylinder is provided with a fluid inlet, a fluid outlet and a separation outlet, the main cylinder has a first end and a second end opposite to each other, the first end is higher than the second end, the fluid outlet is located at the first end of the main cylinder, the separation outlet is located at the second end of the main cylinder, and a cavity is provided in the main cylinder;

[0008] The separation cylinder is arranged in the cavity, and there is a gap between the separation cylinder and the main cylinder body for accommodating the hot fluid. The separation cylinder has relative inlet and outlet ends and a liquid outlet end. The inlet and outlet ends are higher than the liquid outlet end. The inlet and outlet ends are respectively connected to the fluid inlet and the fluid outlet, and the liquid outlet end is connected to the separation outlet.

[0009] In an optional embodiment, a partial air inlet and exhaust end is connected to the fluid inlet, and another part of the air inlet and exhaust end is arranged at the end of the separation cylinder in an arc-shaped and inclined manner, and the air inlet and exhaust end and the separation cylinder are arranged tangent to each other at the connection, so that the air inlet and exhaust end introduces the fluid at the fluid inlet into the separation cylinder in a tangential direction.

[0010] In an optional embodiment, the separation cylinder includes an inner cylinder, a conical cylinder and an outlet pipe, one end of the inner cylinder is an inlet and outlet end, the other end of the inner cylinder is connected to one end of the conical cylinder, the other end of the conical cylinder is connected to the separation outlet, the end of the conical cylinder connected to the inner cylinder is larger than the end of the conical cylinder connected to the separation outlet, the outlet pipe is connected to the inlet and outlet end, one end of the outlet pipe extends into the inner cylinder, and the other end of the outlet pipe is connected to the fluid outlet.

[0011] In an optional embodiment, it also includes a liquid storage tank fixed in the main cylinder body, one end of the liquid storage tank is connected to the separation cylinder so that the separation liquid in the separation cylinder can enter the liquid storage tank, and the other end of the liquid storage tank is connected to the separation outlet.

[0012] In an optional embodiment, it also includes a spirally arranged spiral connecting plate for fixing the separation cylinder or the liquid storage tank. The spiral connecting plate is arranged between the outer wall of the separation cylinder and the inner wall of the main cylinder body, and / or the spiral connecting plate is arranged between the outer wall of the liquid storage tank and the inner wall of the main cylinder body, so that a spiral channel is provided between the main cylinder body and the separation cylinder, and / or between the main cylinder body and the liquid storage tank.

[0013] In an optional embodiment, the spiral connecting plate is inclined to the horizontal plane at an angle ranging from [2°, 60°].

[0014] In an optional embodiment, the main cylinder is further provided with a heat conduction inlet and a heat conduction outlet, which are respectively connected to the cavity, the heat conduction inlet is located at the second end of the main cylinder, and the heat conduction outlet is located at the first end of the main cylinder.

[0015] In an optional embodiment, the main cylinder is further provided with a vent, which is provided at the first end of the main cylinder and is communicated with the cavity.

[0016] In an optional embodiment, the liquid storage tank is provided with a liquid level gauge port and a thermometer port, the liquid level gauge port is located on the side of the liquid storage tank, and the thermometer port is close to the second end of the main cylinder.

[0017] In an optional embodiment, the liquid level meter port includes a high liquid level port and a low liquid level port, and the high liquid level port is higher than the low liquid level port.

[0018] It can be seen from the above technical solution that the beneficial effects of this application are:

[0019] The present application introduces the material into the separation cylinder through the fluid inlet. After the material enters the separation cylinder, the heavier glue liquid remains and flows to the lower liquid outlet end under the action of gravity, and is finally discharged from the separation outlet, while the lighter gas phase is discharged from the inlet and outlet ends of the separation cylinder through the fluid outlet. The arrangement of the main cylinder body and the separation cylinder forms an inner and outer cylinder structure, and the hot fluid in the cavity between the two can provide heat for the high-viscosity material, ensuring that the liquid glue liquid can flow smoothly after being formed, and is finally discharged through the separation outlet. In this way, the gas and glue liquid after flash separation can be effectively separated, and the glue liquid harmful to the gas phase system can be removed, thereby improving the operation stability and extending the operation cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other embodiments and drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of an embodiment of the gas-liquid separator of the utility model is shown;

[0022] Figure 2 A top view of an embodiment of the gas-liquid separator of the utility model is shown;

[0023] Figure numerals: 100, purifier separator; 110, main cylinder; 110a, cavity; 111, fluid inlet; 112, fluid outlet; 113, heat conduction inlet; 114, heat conduction outlet; 115, vent; 116, separator outlet; 120, separation cylinder; 120a, inlet and outlet end; 120b, liquid outlet end; 121, inner cylinder; 122, conical cylinder; 123, outlet pipe; 130, liquid storage tank; 131, liquid level gauge port; 131a, high liquid level port; 131b, low liquid level port; 132, thermometer port; 140, spiral connecting plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0029] Please refer to Figure 1 and Figure 2In an embodiment of the present application, a gas-liquid separator is provided, including: a main cylinder 110 and a separation cylinder 120. The main cylinder 110 and the separation cylinder 120 are inner and outer cylinder structures. The separation cylinder 120 serves as an inner cylinder and the main cylinder 110 serves as an outer cylinder. The main cylinder 110 is fixed to the process area through a mounting plate. The main cylinder 110 is provided with a fluid inlet 111, a fluid outlet 112 and a separation outlet 116. The main cylinder 110 has a first end and a second end opposite to each other, the first end being higher than the second end. The main cylinder 110 is vertically arranged, the first end and the second end are respectively the top end and the bottom end of the main cylinder 110, and the fluid outlet 112 is provided at the bottom end of the main cylinder 110. The outlet 112 is located at the first end of the main cylinder 110, and the separation outlet 116 is located at the second end of the main cylinder 110; the main cylinder 110 has a cavity 110a, and the separation cylinder 120 is arranged in the cavity 110a. The separation cylinder 120 is connected to the inner wall of the main cylinder 110, such as the outer wall of the separation cylinder 120 is fixed in the main cylinder 110 by a bracket, and each connection is fixed by welding. There is a gap between the separation cylinder 120 and the main cylinder 110, and the gap is used to accommodate a hot fluid, so that the cavity 110a always has a hot fluid, and the hot fluid is used to heat the outer wall of the separation cylinder 120. The inside and outside of the separation cylinder 120 can exchange heat, so that the glue liquid in the separation cylinder 120 can maintain fluidity and prevent the glue liquid from solidifying in the separation cylinder 120 due to cooling; the separation cylinder 120 has a relative air inlet and outlet end 120a and a liquid outlet end 120b, the air inlet and outlet end 120a is higher than the liquid outlet end 120b, and the separation cylinder 120 is also vertically arranged, the air inlet and outlet end 120a and the liquid outlet end 120b are the top and bottom ends of the separation cylinder 120 respectively, the air inlet and outlet end 120a is connected to the fluid inlet 111 and the fluid outlet 112 respectively, and the liquid outlet end 120b is connected to the separation outlet 116, and the air inlet and outlet end 120a is connected to the fluid inlet 111 and the fluid outlet 112 respectively. The edge of the gas end 120a is connected to the fluid inlet 111 inside the main cylinder 110, and the middle of the air inlet and outlet end 120a is connected to the top fluid outlet 112 of the main cylinder 110. The fluid inlet 111 is externally connected to the outlet of the flash device. After the material enters the separation cylinder 120 through the fluid inlet 111, the lighter material is discharged through the material outlet at the top, and the heavier material is discharged through the bottom separation outlet 116. The second end of the separation cylinder 120 is connected to the separation outlet 116, that is, the bottom end of the separation cylinder 120 is connected to the bottom separation outlet 116 of the main cylinder 110 through a pipe.

[0030] After flash separation in the prior art, POE glue liquid (high viscosity glue liquid) in the gas phase will accumulate in subsequent process equipment, causing the system to be unable to operate stably. After the accumulation and blockage, it needs to be cleaned, which is particularly cumbersome and requires disassembly and reinstallation. The maintenance cost is high, and the shutdown for cleaning will affect normal production. The purification separator 100 of the present application introduces the material at the fluid inlet 111 into the separation cylinder 120 through the inlet and outlet ends 120a. After the material enters the separation cylinder 120, the heavier glue liquid remains and flows to the lower liquid outlet end 120b under the action of gravity, while the lighter gas phase is discharged from the exhaust end 120a through the fluid outlet 112. The arrangement of the main cylinder body 110 and the separation cylinder 120 forms an inner and outer cylinder structure, and the hot fluid between the two can provide heat for the high-viscosity material to ensure that the liquid glue liquid can flow smoothly after being formed, and finally be discharged through the separation outlet 116. In this way, the gas and glue liquid after flash evaporation separation can be effectively processed, and the glue liquid harmful to the gas phase system can be removed to avoid condensation and scaling of the glue liquid. After using the purification separator 100 of the present application, the glue liquid purification efficiency of the flash evaporation system is relatively high, which is equivalent to secondary separation of the glue liquid. The glue liquid removal efficiency can reach more than 99%, which improves the operation stability and extends the operation cycle.

[0031] In an optional embodiment, the inlet and outlet end 120a of the separation cylinder 120 is specially designed. The inlet and outlet end 120a is the top of the separation cylinder 120, and it is a section of a tube structure extending toward the fluid inlet 111. The tube structure is connected to the fluid inlet 111. Another part of the inlet and outlet end 120a is connected to the top of the separation cylinder 120 in an arc-shaped and inclined manner. The inlet and outlet end 120a is spirally curved and inclined as a whole, and the inlet and outlet end 120a is tangentially arranged with the separation cylinder 120 at the connection, so that the inlet and outlet end 120a 0a can introduce the fluid at the fluid inlet 111 into the separation cylinder 120 in a tangential direction, so that the material can enter the separation cylinder 120 in a direction tangential to the inner wall of the separation cylinder 120 and inclined downward after passing through the air inlet and outlet end 120a. After entering, the material rotates downward. Under the action of centrifugal force, the glue with higher density adheres to the inner wall of the separation cylinder 120 and then flows downward along the inner wall. The material can be more fully separated into gas and liquid in the separation cylinder 120, and finally flows toward the liquid outlet end 120b of the separation cylinder 120 under the action of gravity.

[0032] In an optional embodiment, the separation cylinder 120 includes an inner cylinder 121, a conical cylinder 122 and an outlet pipe 123, one end of the inner cylinder 121 is an inlet and outlet end 120a, the other end of the inner cylinder 121 is connected to one end of the conical cylinder 122, the other end of the conical cylinder 122 is connected to the separation outlet 116, the end size of the conical cylinder 122 connected to the inner cylinder 121 is larger than the end of the conical cylinder 122 connected to the separation outlet 116, that is, the top size of the conical cylinder 122 is larger than the bottom size, the conical cylinder 122 is a variable diameter structure, which can be gradually variable or step-by-step variable, and can adopt a conical cylinder structure, and the conical cylinder 122 2 is arranged vertically, so that the glue liquid flows from the top to the bottom of the conical cylinder 122; the outlet pipe 123 is connected to the inlet and outlet end 120a, one end of the outlet pipe 123 extends a section into the inner cylinder 121, and the other end of the outlet pipe 123 is connected to the fluid outlet 112. The outlet pipe 123 is connected to the middle of the inlet and outlet end 120a, and a circle of interval is left on the edge of the inlet and outlet end 120a. The inner wall of the inner cylinder 121 corresponding to the interval is connected to the fluid inlet 111. The inlet and outlet end 120a is tangent to the local inlet and outlet end 120a extending to the fluid inlet 111 at the shell corresponding to the interval, and each connection is welded and fixed.

[0033] In an optional embodiment, it also includes a liquid storage tank 130 fixed in the main cylinder 110, which is also located in the cavity 110a. The liquid storage tank 130 is located below the separation cylinder 120. The liquid storage tank 130 is in a tank shape, with its top end serving as a glue inlet and its bottom end serving as a glue outlet. The top of the liquid storage tank 130 is connected to the liquid outlet 120b of the separation cylinder 120. Specifically, the top of the liquid storage tank 130 is connected and connected to the bottom end of the conical cylinder 122 through a pipe fitting, so that the separation liquid in the separation cylinder 120 can enter the liquid storage tank 130, and the bottom end of the liquid storage tank 130 is connected to the separation outlet 116, that is, the bottom end of the liquid storage tank 130 is connected to the separation outlet 116 of the main cylinder 110, so that the glue can eventually be discharged from the separation outlet 116.

[0034] In an optional embodiment, a spiral connecting plate 140 is further included for fixing the separation cylinder 120 or the liquid storage tank 130. Since there is a gap between the separation cylinder 120 and the main cylinder body 110, and between the liquid storage tank 130 and the main cylinder body 110, the spiral connecting plate 140 is arranged between the outer wall of the separation cylinder 120 and the inner wall of the main cylinder body 110, and / or the spiral connecting plate 140 is arranged between the outer wall of the liquid storage tank 130 and the inner wall of the main cylinder body 110; the spiral connecting plate 140 is spiral-shaped. In an optional embodiment, the angle range of the spiral connecting plate 140 inclined to the horizontal plane is [2°, 60°], such as 2°, 30° or 60°; The outer side of the separation cylinder 120 is connected to the inner side of the spiral connecting plate 140, the inner wall of the main cylinder body 110 is connected to the outer side of the spiral connecting plate 140, or the outer wall of the liquid storage tank 130 is connected to the inner side of the spiral connecting plate 140, and the inner wall of the main cylinder body 110 is connected to the outer side of the spiral connecting plate 140, so that a spiral channel is provided between the main cylinder body 110 and the separation cylinder 120, and / or between the main cylinder body 110 and the liquid storage tank 130. When the hot fluid flows through the outside of the separation cylinder 120 or the liquid storage tank 130, it passes through the spiral channel, so that the contact time between the hot fluid and the separation cylinder 120 and the liquid storage tank 130 is prolonged, thereby fully heating the glue liquid.

[0035] In an optional embodiment, the main cylinder 110 is further provided with a heat conduction inlet 113 and a heat conduction outlet 114, which are respectively connected to the cavity 110a, and the heat conduction inlet 113 is located at the second end of the main cylinder 110, and the heat conduction outlet 114 is located at the first end of the main cylinder 110. The heat conduction inlet 113 serves as an inlet for the hot fluid, and the heat conduction outlet 114 serves as an outlet for the hot fluid. The hot fluid can be heated oil. After the hot fluid enters the cavity 110a through the heat conduction inlet 113, it flows upward from the second end of the main cylinder 110, and finally flows out from the heat conduction outlet 114 at the first end of the main cylinder 110, so that the heat of the hot fluid can be fully transferred to the separation cylinder 120 and the liquid storage tank 130. In an optional embodiment, the main cylinder 110 is further provided with a vent 115, which is provided at the first end of the main cylinder 110, and the vent 115 is located above the heat conduction outlet 114. The vent 115 is communicated with the cavity 110a, and the vent 115 serves as a gas exhaust port. If gas appears in the cavity 110a of the main cylinder 110, the gas can reach the second end of the main cylinder 110 under the action of buoyancy, and then be discharged through the vent 115.

[0036] In an optional embodiment, the liquid storage tank 130 is provided with a liquid level gauge port 131 and a thermometer port 132. The liquid level gauge port 131 is located on the side of the liquid storage tank 130, and the thermometer port 132 is close to the second end of the main cylinder 110. The liquid level gauge port 131 extends outward through the tube structure and extends through the side wall of the main cylinder 110 to the outside of the main cylinder 110. The liquid level height can be observed through the liquid level gauge port 131. A sensor can be set at the liquid level gauge port 131 to monitor the liquid level in the liquid storage tank 130 in real time. The thermometer port 132 extends outward from the bottom end of the liquid storage tank 130 through the tube structure, and also extends through the side wall of the main cylinder 110 to the outside of the main cylinder 110. The temperature of the glue in the liquid storage tank 130 can be detected through the thermometer port 132 to ensure that the glue is in an optimal flow state and prevent the glue from condensing in the liquid storage tank 130 due to cooling. A temperature sensor can be set externally at the thermometer port 132 to detect the temperature in real time. In an optional embodiment, the liquid level meter port 131 includes a high liquid level port 131a and a low liquid level port 131b. The high liquid level port 131a is higher than the low liquid level port 131b. The high liquid level port 131a is close to the top of the liquid storage tank 130, and the low liquid level port 131b is close to the bottom of the liquid storage tank 130. The high liquid level port 131a can be used to warn of the glue position. The high liquid level triggers a signal to discharge the glue from the liquid storage tank 130. The low liquid level port 131b can determine that the glue discharge is completed, and trigger a signal to close the liquid storage tank 130 to discharge the glue. An electric valve can be set at the external connection of the separator outlet 116, and an electric liquid level gauge is set through the high liquid level port 131a and the low liquid level port 131b. The trigger signal is sent to the electric valve for linkage control.

[0037] In an optional embodiment, the fluid inlet 111, the fluid outlet 112, the heat conduction inlet 113, the heat conduction outlet 114, the high liquid level port 131a, the low liquid level port 131b, the thermometer port 132 and the vent port 115 adopt a pipe structure extending to the outside of the main cylinder 110, and a flange is provided at the end of the pipe to facilitate external connection of each port through the flange.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "optional example" or "optional implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0039] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A gas-liquid separator, characterized in that: include: A main cylinder (110) is provided with a fluid inlet (111), a fluid outlet (112) and a separation outlet (116); the main cylinder (110) has a first end and a second end opposite to each other, the first end is higher than the second end, the fluid outlet (112) is located at the first end of the main cylinder (110), the separation outlet (116) is located at the second end of the main cylinder (110), and the main cylinder (110) has a cavity (110a) therein; A separation cylinder (120) is arranged in the cavity (110a), and a gap for accommodating a hot fluid is provided between the separation cylinder (120) and the main cylinder body (110). The separation cylinder (120) has opposite air inlet and outlet ends (120a) and a liquid outlet end (120b), wherein the air inlet and outlet end (120a) is higher than the liquid outlet end (120b), and the air inlet and outlet ends are respectively connected to the fluid inlet (111) and the fluid outlet (112), and the liquid outlet end (120b) is connected to the separated material outlet (116).

2. The gas-liquid separator according to claim 1, characterized in that: A portion of the inlet and outlet end (120a) is connected to the fluid inlet (111), and another portion of the inlet and outlet end (120a) is arranged at the end of the separation cylinder (120) in an arc-shaped and inclined manner, and the inlet and outlet end (120a) and the separation cylinder (120) are arranged tangentially at the connection point, so that the inlet and outlet end (120a) introduces the fluid at the fluid inlet (111) into the separation cylinder (120) in a tangential direction.

3. The gas-liquid separator according to claim 2, characterized in that: The separation cylinder (120) comprises an inner cylinder (121), a conical cylinder (122) and an outlet pipe (123); one end of the inner cylinder (121) is the inlet and outlet end (120a); the other end of the inner cylinder (121) is connected to one end of the conical cylinder (122); the other end of the conical cylinder (122) is communicated with the separation outlet (116); the end of the conical cylinder (122) connected to the inner cylinder (121) is larger than the end of the conical cylinder (122) communicated with the separation outlet (116); the outlet pipe (123) is connected to the inlet and outlet end (120a); one end of the outlet pipe (123) extends into the inner cylinder (121) for a section; the other end of the outlet pipe (123) is connected to the fluid outlet (112).

4. The gas-liquid separator according to any one of claims 1 to 3, characterized in that: It also includes a liquid storage tank (130) fixed in the main cylinder (110), one end of the liquid storage tank (130) is connected to the separation cylinder (120) so that the separation liquid in the separation cylinder (120) can enter the liquid storage tank (130), and the other end of the liquid storage tank (130) is connected to the separation outlet (116).

5. The gas-liquid separator according to claim 4, characterized in that: It also includes a spirally arranged spiral connecting plate (140) for fixing the separation cylinder (120) or the liquid storage tank (130); the spiral connecting plate (140) is arranged between the outer wall of the separation cylinder (120) and the inner wall of the main cylinder (110), and / or the spiral connecting plate (140) is arranged between the outer wall of the liquid storage tank (130) and the inner wall of the main cylinder (110), so that a spiral channel is provided between the main cylinder (110) and the separation cylinder (120), and / or between the main cylinder (110) and the liquid storage tank (130).

6. The gas-liquid separator according to claim 5, characterized in that: The spiral connecting plate (140) is inclined to the horizontal plane at an angle ranging from [2° to 60°].

7. The gas-liquid separator according to claim 1, characterized in that: The main cylinder (110) is further provided with a heat conduction inlet (113) and a heat conduction outlet (114); the heat conduction inlet (113) and the heat conduction outlet (114) are respectively connected to the cavity (110a); the heat conduction inlet (113) is located at the second end of the main cylinder (110), and the heat conduction outlet (114) is located at the first end of the main cylinder (110).

8. The gas-liquid separator according to claim 7, characterized in that: The main cylinder (110) is further provided with a vent (115), wherein the vent (115) is provided at a first end of the main cylinder (110), and the vent (115) is communicated with the cavity (110a).

9. The gas-liquid separator according to claim 4, characterized in that: The liquid storage tank (130) is provided with a liquid level gauge port (131) and a thermometer port (132); the liquid level gauge port (131) is located on a side of the liquid storage tank (130), and the thermometer port (132) is close to the second end of the main cylinder (110).

10. The gas-liquid separator according to claim 9, characterized in that: The liquid level meter port (131) comprises a high liquid level port (131a) and a low liquid level port (131b), and the high liquid level port (131a) is higher than the low liquid level port (131b).

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