JP5881407B2 - Gas-liquid separator - Google Patents

Description

The present invention relates to a gas-liquid separator that separates liquids such as condensate and condensed water mixed in gas such as steam, compressed air, and various gases by centrifugal force by causing a swirling flow in a casing.

A conventional gas-liquid separator is disclosed in Patent Document 1, for example. This is because the swirl vane is arranged in an annular space formed by the casing and the exhaust pipe, the upper part of the annular space is connected to the inlet, the upper part is connected to the outlet through the inner hole from the lower end of the exhaust pipe, and the lower part of the annular space is connected. The drainage valve chamber is formed below the swirl chamber and the swirl chamber, and the lower part of the drainage valve chamber is connected to the drainage port.

JP2002-28422

In the conventional gas-liquid separator, the fluid that has entered the annular space from the inlet is swirled by swirling blades, and the liquid in the gas is spouted to the outside by the action of centrifugal force. Along the drain valve chamber and discharged from the drain port, and the gas separated from the liquid is discharged from the lower end of the exhaust pipe to the outlet through the hole inside the exhaust pipe. Since it flowed down along the outer surface of the tube and carried to the outlet together with the gas flow, there was a problem that the gas-liquid separation efficiency was poor.

Therefore, the problem to be solved by the present invention is to provide a gas-liquid separator in which minute liquid flowing down along the outer surface of the exhaust pipe is not carried out to the outlet.

In order to solve the above problems, the gas-liquid separator of the present invention has a swirl vane disposed in an annular space formed by a casing and an exhaust pipe, and an upper portion of the annular space is connected to an inlet, and the inner side from the lower end of the exhaust pipe. The upper part is connected to the outlet through the hole, and a swirl chamber is formed below the annular space and a drain valve chamber is formed below the swirl chamber, and the lower part of the drain valve chamber is connected to the drain port. A spiral groove in the same direction as the swirl vane is formed on the outer surface of the exhaust pipe.

In the present invention, a spiral groove in the same direction as the swirl vane is formed on the outer surface of the exhaust pipe, so that the minute liquid flowing down along the outer surface of the exhaust pipe gathers in the spiral groove and becomes larger outside. Therefore, a minute liquid is not carried out to the outlet together with the gas flow, and an excellent effect that the gas-liquid separation efficiency can be improved is produced.

It is sectional drawing of the gas-liquid separator concerning embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. The casing is formed by welding the inlet / outlet member 2 and the bottom lid 3 to the main body 1. The inlet / outlet member 2 has an inlet 4 and an outlet 5 on the left and right sides, and an inlet flange 6 is welded to the inlet 4 and an outlet flange 7 is welded to the outlet 5. The bottom cover 3 has a drain port 8 at the center of the lower end, and a drain tube 9 is welded to the drain port 8. The main body 1 is cylindrical and has a large diameter on the upper inner surface. A double substantially cylindrical exhaust pipe 10 is placed on an annular step between the upper inner surface and the lower inner surface of the main body 1, and the exhaust pipe 10 is fixed between the inlet / outlet member 2. The outer cylinder of the exhaust pipe 10 is straight and formed lower than the inner cylinder. The outer cylinder can be omitted, and the main body 1 can also be used. The inner cylinder of the exhaust pipe 10 has a shape in which the upper part gently expands upward and the lower part gently expands downward, and the lower end part forms a draining part 16.

A swirl vane 12 is formed integrally with the exhaust pipe 10 in an annular space 11 formed between the inner and outer cylinders of the exhaust pipe 10. The inlet 4 is connected to the lower annular space 11 through the communication hole 13, and the inner side of the inner cylinder of the exhaust pipe 10 is connected to the upper outlet 5. A continuous spiral groove 20 in the same direction as the swirl vane 12 is formed on the outer surface of the inner cylinder of the exhaust pipe 10. The spiral groove 20 can have a U-shaped, trapezoidal, triangular, or semicircular cross section. A swirl chamber 14 is formed between the lower inner surface of the main body 1 and the inner surface of the bottom lid 3, and a liquid reservoir chamber 15 is formed below the swirl chamber 14, and the lower end of the liquid reservoir chamber 15 is connected to the drainage port 8. A partition member 17 that separates the swirl chamber 14 and the liquid reservoir chamber 15 is disposed. The partition member 17 has a disk shape and has a plurality of protrusions 18 on the outer periphery. A liquid passage gap 19 is formed between the outer peripheral edge of the partition wall member 17 between the protrusions 18 and the inner peripheral wall of the main body 1.

The gas containing liquid entering from the inlet 4 is swirled by the swirl vanes 12. The liquid is swung out and separated by the action of centrifugal force, flows down along the inner peripheral wall of the main body 1, and flows into the liquid reservoir 15 through the liquid passage gap 19 between the protrusions 18. The minute liquid flowing down along the outer surface of the exhaust pipe 10 gathers in the spiral groove 20 and is swung out and separated, flows down along the inner peripheral wall of the main body 1, and flows between the protrusions 18. It flows into the liquid reservoir 15 through the liquid passage gap 19. The liquid that has flowed into the liquid storage chamber 15 is discharged out of the system from the liquid discharge port 8. The gas that has passed through the lower end of the exhaust pipe 10 flows out from the outlet 5 through the inside of the inner cylinder of the exhaust pipe 10.

Since the minute liquid flowing down along the outer surface of the exhaust pipe 10 gathers in the spiral groove 20 and becomes larger and is swung out and separated, the minute liquid may be carried to the outlet 5 together with the gas flow. The gas-liquid separation efficiency can be increased.

INDUSTRIAL APPLICABILITY The present invention is used for a gas-liquid separator that separates liquids such as condensate and condensed water mixed in a gas such as steam, compressed air, and various gases by causing a swirl flow in the casing and centrifugal force. Can do.

DESCRIPTION OF SYMBOLS 1 Main body 2 Entrance / exit member 3 Bottom cover 4 Inlet 5 Outlet 8 Drainage port 10 Exhaust pipe 11 Annular space 12 Swivel blade 14 Swivel chamber 15 Reservoir chamber 16 Drain part 17 Partition member 18 Protrusion 19 Liquid passage gap 20 Spiral groove

Claims (1)

The swirl vane is arranged in an annular space formed between the inner and outer cylinders of the exhaust pipe, the upper part of the annular space is connected to the inlet, the upper part is connected to the outlet through the inner hole from the lower end of the exhaust pipe, and the lower part of the annular space. in the lower part of the swirl chamber and the revolving chamber of the exhaust fluid valve chamber to form a drain valve chamber downwardly those connected to drain port to the outer surface of the inner cylinder of the exhaust pipe, and the axis of the swirl vane and of the inner cylindrical shaft portion spiral groove is formed to form a spiral groove so that the same direction, under the swirl vane, disposed portions are spiral grooves of the inner cylindrical formed gas-liquid separator, characterized in that the.

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