A liquid-gas separator

Abstract

The utility model discloses a liquid-gas separator, comprising a tank body, the bottom of the tank body is fixedly connected with a drain pipe, the outer wall of the tank body is fixedly connected with an oil drain pipe near the bottom, the tank body is fixedly connected with an overflow groove at a position corresponding to the oil drain pipe, the inner wall of the top opening of the tank body is fixedly connected with a partition, the bottom of the partition is fixedly penetrated with an air guide pipe, the outer wall of the air guide pipe is fixedly connected with a spiral plate, and the outer wall of the tank body located below the partition is fixedly connected with an air inlet pipe; by arranging an air guide pipe, a spiral plate, etc. in the tank body, the utility model can guide the gas entering the tank body and make the gas flow in a spiral, thereby utilizing centrifugal force to separate gas and liquid, generating less noise and having a good separation effect, and through the arrangement of the inspection port and the cover plate, the mist collector can be taken out from the inspection port by simply removing the cover plate and pulling the pressure ring out of the top cover, thereby facilitating the replacement of the blocked mist collector.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid separation, in particular to a liquid-gas separator. Background Art

[0002] The separator is an important component in the operation of an oilfield gas gathering station. It is responsible for processing the incoming natural gas, separating the water and oil contained in the natural gas, and obtaining purer natural gas.

[0003] After searching, the patent with announcement number CN219194893U discloses a high-efficiency vertical separator for separating oil, water and gas three phases, which disperses the mixed air flow through the inlet baffle, and the liquid is separated from the gas by its own gravity. The separated liquid is lowered to the lower part of the partition through the downcomer of the oil-water separation component, and the oil and water in the liquid are separated by the distributor. The demisting component separates the gas and liquid on the outlet gas, and the separated liquid flows along the downcomer to the partition, and flows to the bottom of the partition through the downcomer. The separated gas is adsorbed and dried again by the molecular sieve filled in the outlet. By separating the oil and water in the air flow multiple times, the outlet gas is guaranteed to be pure and safe to use.

[0004] Although the above scheme can perform gas-liquid separation, during use, since the gas is separated from the liquid by collision with the inlet baffle, the noise is relatively large and the separation effect is poor. The defogger assembly is required to undertake most of the gas-liquid separation work. At the same time, some solid impurities carried in the gas are easy to adhere to the defogger assembly, and the defogger assembly is installed in the tank body, which is inconvenient to replace and needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a liquid-gas separator to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A liquid-gas separator comprises a tank body, the bottom of the tank body is fixedly connected to a drain pipe, the outer wall of the tank body is fixedly connected to an oil drain pipe near the bottom, the tank body is fixedly connected to an overflow groove at a position corresponding to the oil drain pipe, a partition is fixedly connected to the inner wall at the top opening of the tank body, an air guide pipe is fixedly penetrated at the bottom of the partition, a spiral plate is fixedly connected to the outer wall of the air guide pipe, the outer wall of the tank body located below the partition is fixedly connected to an air inlet pipe, and the air inlet pipe is tangent to the tank body, the top flange of the tank body is connected to a top cover, an air outlet pipe is fixedly penetrated on the top cover, and a mist collector is detachably connected to the inner wall at the top end of the air guide pipe.

[0008] As a further solution of the utility model: the inner wall of the tank body below the air duct is fixedly connected with a liquid collecting bucket, the bottom end of the liquid collecting bucket is fixedly connected with a downcomer, the bottom end of the downcomer is fixedly connected with a distributor, and a connecting pipe is fixedly penetrated through the liquid collecting bucket.

[0009] As a further solution of the utility model: the partition is arranged at an angle, the outer wall of the tank body is fixedly connected with a liquid guide tube, both ends of the liquid guide tube are connected to the tank body, the top end of the liquid guide tube is located above the lower end of the partition, and the bottom end of the liquid guide tube is located above the liquid collecting bucket.

[0010] As a further solution of the utility model: an inspection port is opened at the top of the top cover corresponding to the air duct, a cover plate is fixedly connected to the top of the top cover and the inspection port by bolts, the bottom of the inspection port is fixedly connected to a pressure ring by multiple connecting rods, the bottom of the pressure ring is abutted against the top of the mist collector, a retaining ring is fixedly connected to the inner wall of the top opening of the air duct, and the bottom end of the mist collector is abutted against the top of the retaining ring.

[0011] As a further solution of the utility model: a first liquid level sensor and a second liquid level sensor are installed through the outer wall of the tank body, the probe of the first liquid level sensor is located in the overflow groove, and the first liquid level sensor is located above the oil drain pipe, the probe of the second liquid level sensor is located below the overflow groove, and the top of the top cover is fixedly connected to a pressure relief valve installation port.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model can guide the gas entering the tank body by arranging an air guide pipe, a spiral plate, etc. in the tank body, so that the gas can flow in a spiral direction, thereby utilizing centrifugal force to separate gas and liquid, generating less noise and achieving a good separation effect. Through the arrangement of the inspection port and the cover plate, the mist collector can be taken out from the inspection port by simply removing the cover plate and pulling the pressure ring out of the top cover, thereby facilitating the replacement of a blocked mist collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a liquid-gas separator.

[0015] Figure 2 for Figure 1 sectional view of .

[0016] Figure 3 for Figure 2 A partial enlarged view of .

[0017] Among them, the tank body 1, the air inlet pipe 2, the drain pipe 3, the oil drain pipe 4, the overflow trough 5, the liquid collecting hopper 6, the downcomer 7, the distributor 8, the connecting pipe 9, the partition 10, the air guide pipe 11, the spiral plate 12, the liquid guide pipe 13, the top cover 14, the air outlet pipe 15, the pressure relief valve installation port 16, the inspection port 17, the cover plate 18, the connecting rod 19, the pressure ring 20, the retaining ring 21, the mist collector 22, the first liquid level sensor 23, and the second liquid level sensor 24. DETAILED DESCRIPTION

[0018] 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 in 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.

[0019] See also Figures 1 to 3 In an embodiment of the utility model, a liquid-gas separator comprises a tank body 1, the bottom of the tank body 1 is fixedly connected with a drain pipe 3, the outer wall of the tank body 1 is fixedly connected with an oil drain pipe 4 near the bottom, an overflow groove 5 is fixedly connected to the corresponding part of the tank body 1 and the oil drain pipe 4, a partition 10 is fixedly connected to the inner wall of the top opening of the tank body 1, an air guide pipe 11 is fixedly penetrated at the bottom of the partition 10, a spiral plate 12 is fixedly connected to the outer wall of the air guide pipe 11, and the outer edge of the spiral plate 12 contacts the inner wall of the tank body 1, the outer wall of the tank body 1 located below the partition 10 is fixedly connected with an air inlet pipe 2, and the air inlet pipe 2 is tangent to the tank body 1, a top flange of the tank body 1 is connected with a top cover 14, an air outlet pipe 15 is fixedly penetrated on the top cover 14, and a mist collector 22 is detachably connected to the inner wall of the top end of the air guide pipe 11.

[0020] The utility model adopts the above scheme. When in use, the gas enters the tank body 1 through the air guide pipe 11 and flows spirally downward along the flow channel formed by the spiral plate 12. The tiny droplets mixed in the gas hit the inner wall of the tank body 1 under the action of centrifugal force, so as to accumulate on the inner wall of the tank body 1 to form large droplets, and flow downward along the inner wall of the tank body 1 to gather at the bottom of the tank body 1. The separated gas enters the air guide pipe 11, is discharged from the air outlet pipe 15 after secondary gas-liquid separation at the mist collector 22, and the water and oil in the liquid collected at the bottom of the tank are separated into layers under the action of gravity due to their different densities. The water is located in the lower layer and can be discharged from the drain pipe 3, and the oil is located in the upper layer and can enter the overflow tank 5 and be discharged from the oil drain pipe 4. The separation effect is good, and the gas-liquid separation is performed by centrifugal force, and the noise generated is smaller.

[0021] Specific combination Figure 2In one embodiment of the utility model, the inner wall of the tank body 1 below the air guide pipe 11 is fixedly connected to a liquid collecting hopper 6, the bottom end of the liquid collecting hopper 6 is fixedly connected to a downcomer 7, the bottom end of the downcomer 7 is fixedly connected to a distributor 8, and a connecting pipe 9 is fixedly penetrated through the liquid collecting hopper 6.

[0022] By setting the liquid collecting hopper 6, the separated liquid and gas can be isolated in the tank body 1, so as to avoid the flow of gas interfering with the liquid buffered in the tank body 1. By setting the connecting pipe 9, the air pressure on the upper and lower sides of the liquid collecting hopper 6 can be kept balanced.

[0023] Specific combination Figure 1 and Figure 2 In one embodiment of the utility model, the partition 10 is arranged at an angle, and a liquid guide tube 13 is fixedly connected to the outer wall of the tank body 1, both ends of the liquid guide tube 13 are connected to the tank body 1, the top end of the liquid guide tube 13 is located above the lower end of the partition 10, and the bottom end of the liquid guide tube 13 is located above the liquid collecting bucket 6.

[0024] The inclined partition 10 can guide the liquid flowing out from the upper end of the mist catcher 22 so that the liquid is collected at the top of the liquid guide pipe 13 , thereby allowing the liquid to flow into the liquid collecting hopper 6 through the liquid guide pipe 13 .

[0025] Specific combination Figure 1-3 In one embodiment of the utility model, an inspection port 17 is opened at the top of the top cover 14 corresponding to the air duct 11, and a cover plate 18 is fixedly connected to the top of the top cover 14 and the corresponding position of the inspection port 17 by bolts. The bottom of the inspection port 17 is fixedly connected to a pressure ring 20 by a plurality of connecting rods 19, and the bottom of the pressure ring 20 is abutted against the top of the mist collector 22. A retaining ring 21 is fixedly connected to the inner wall of the top opening of the air duct 11, and the bottom end of the mist collector 22 is abutted against the top of the retaining ring 21.

[0026] By setting the inspection port 17 and the cover plate 18, the mist collector 22 can be taken out from the inspection port 17 by simply removing the cover plate 18 and pulling the pressure ring 20 out of the top cover 14, thereby facilitating the replacement of the blocked mist collector 22.

[0027] In addition, in one embodiment of the utility model, a first liquid level sensor 23 and a second liquid level sensor 24 are installed through the outer wall of the tank body 1, the probe of the first liquid level sensor 23 is located in the overflow groove 5, and the first liquid level sensor 23 is located above the oil drain pipe 4, and the probe of the second liquid level sensor 24 is located below the overflow groove 5, and the top of the top cover 14 is fixedly connected to a pressure relief valve installation port 16.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liquid-gas separator, characterized in that: The invention comprises a tank body (1), wherein the bottom of the tank body (1) is fixedly connected to a drainage pipe (3), the outer wall of the tank body (1) is fixedly connected to an oil drain pipe (4) near the bottom, an overflow groove (5) is fixedly connected to a corresponding position of the oil drain pipe (4) in the tank body (1), a partition (10) is fixedly connected to the inner wall at the top opening of the tank body (1), an air guide pipe (11) is fixedly penetrated through the bottom of the partition (10), a spiral plate (12) is fixedly connected to the outer wall of the air guide pipe (11), an outer wall of the tank body (1) located below the partition (10) is fixedly connected to an air intake pipe (2), and the air intake pipe (2) is tangent to the tank body (1), a top flange of the tank body (1) is connected to a top cover (14), an air outlet pipe (15) is fixedly penetrated through the top cover (14), and a mist collector (22) is detachably connected to the inner wall at the top of the air guide pipe (11).

2. A liquid-gas separator according to claim 1, characterized in that: The inner wall of the tank body (1) below the air guide pipe (11) is fixedly connected to a liquid collecting hopper (6), the bottom end of the liquid collecting hopper (6) is fixedly connected to a downcomer (7), the bottom end of the downcomer (7) is fixedly connected to a distributor (8), and a connecting pipe (9) is fixedly penetrated through the liquid collecting hopper (6).

3. A liquid-gas separator according to claim 1, characterized in that: The partition (10) is arranged at an angle, and a liquid guide tube (13) is fixedly connected to the outer wall of the tank body (1), both ends of the liquid guide tube (13) are connected to the tank body (1), the top end of the liquid guide tube (13) is located above the lower end of the partition (10), and the bottom end of the liquid guide tube (13) is located above the liquid collecting hopper (6).

4. A liquid-gas separator according to claim 1, characterized in that: An inspection opening (17) is provided at the top of the top cover (14) at a position corresponding to the air guide tube (11); a cover plate (18) is fixedly connected to the top of the top cover (14) at a position corresponding to the inspection opening (17) by bolts; a pressure ring (20) is fixedly connected to the bottom of the inspection opening (17) by a plurality of connecting rods (19); the bottom of the pressure ring (20) abuts against the top of the mist collector (22); a retaining ring (21) is fixedly connected to the inner wall of the top opening of the air guide tube (11); the bottom end of the mist collector (22) abuts against the top of the retaining ring (21).

5. A liquid-gas separator according to claim 1, characterized in that: A first liquid level sensor (23) and a second liquid level sensor (24) are installed through the outer wall of the tank body (1); a probe of the first liquid level sensor (23) is located in the overflow groove (5), and the first liquid level sensor (23) is located above the oil drain pipe (4); a probe of the second liquid level sensor (24) is located below the overflow groove (5); and a pressure relief valve installation port (16) is fixedly connected to the top of the top cover (14).

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