JP2011224431A - Gas-liquid separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas-liquid separator preventing a filter from clogging relatively early.SOLUTION: A swirl vane 12 is arranged in an annular space 11 formed by a body 1 and an exhaust pipe 10. The space above the swirl vane 12 is connected to an inlet 6. The space above the exhaust pipe 10 is connected to an outlet 7 through an inside hole of the exhaust pipe 10. A liquid storage chamber 15 is formed below the annular space 11, and the lower end of the liquid storage chamber 15 is connected to a liquid discharge outlet 8. A filter 22 for filtrating fluid is arranged between the exhaust pipe 10 and the liquid storage chamber 15. An upstream filter 24 for filtrating the fluid is arranged between the exhaust pipe 10 and the liquid storage chamber 15 outside the filter 22. The filtrating particle size of the upstream filter 24 is formed greater than the filtrating particle size of the filter 22. An impinging plate 25 is arranged in the outer periphery of the upstream filter 24 in the axial direction of the upstream filter 24.

Description

The present invention relates to a gas-liquid separator that generates a swirling flow in a casing and separates the liquid such as condensate or condensed water mixed in a gas such as steam, compressed air, or various gases by centrifugal force, and particularly in the casing. And a filter for filtering fluid.

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 swirl vane is connected to the inlet, the upper part is connected to the outlet through the hole inside the exhaust pipe, and the liquid is placed below the annular space. A reservoir chamber is formed, the lower end of the liquid reservoir chamber is connected to a drainage port, and a cylindrical filter for filtering a fluid is disposed between the exhaust pipe and the liquid reservoir chamber.

Japanese Patent Laid-Open No. 2004-340552

In the above conventional gas-liquid separator, the filter for filtering the fluid is clogged relatively early due to the accumulation of foreign matter such as dust and scales, so the filter must be frequently disassembled and cleaned or replaced. There was a problem that had to be done.

Therefore, the problem to be solved by the present invention is to provide a gas-liquid separator that can prevent the filter from being clogged relatively early.

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 the upper part of the swirl vane is connected to an inlet, and a hole inside the exhaust pipe. A cylindrical shape that connects the upper side to the outlet, forms a liquid storage chamber below the annular space, connects the lower end of the liquid storage chamber to the drainage port, and filters the fluid between the exhaust pipe and the liquid storage chamber A cylindrical upstream filter that filters the fluid between the exhaust pipe and the liquid storage chamber is disposed outside the filter, and the upstream filter has a filtration particle size larger than that of the filter. The collision plate is arranged along the axial direction of the upstream filter around the outer periphery of the upstream filter.

According to the present invention, the cylindrical upstream filter for filtering the fluid between the exhaust pipe and the liquid storage chamber is disposed outside the filter, and the upstream filter has a filtration particle size larger than the filtration particle size of the filter. By arranging the collision plate along the axial direction of the upstream filter around the outer periphery of the filter, medium-sized foreign matter collides with the collision plate and is separated and flows down along the collision plate to the liquid reservoir. Since small foreign particles are trapped by the upstream filter, fine particles of small particle size are captured by the filter, preventing the filter from clogging relatively early, and the filter needs to be frequently washed and replaced. There is an effect that there is no.

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

Hereinafter, an embodiment of the present invention will be described with reference to FIG. The casing is formed by connecting the cylindrical main body 1 and the entrance / exit member 2 with a clamp joint 3 and connecting the bottom lid 4 to the lower part of the main body 1 by welding. The inlet / outlet member 2 is provided with an inlet 6 and an outlet 7 on the left and right coaxial axes, and a plug hole 5 is provided at the center of the upper end. The plug hole 5 is used for connecting a fluid pipe for backwashing or connecting a pressure gauge. The bottom lid 4 is provided with a drainage port 8 at the center of the lower end. The valve seat 16 having the communication port 9 opened is connected to the doorway member 2 by screws. The exhaust pipe 10 is fixed to the entrance / exit member 2 by sandwiching an inward flange at the upper end of the exhaust pipe 10 between the entrance / exit member 2 and the valve seat 16. The exhaust pipe 10 has a double, substantially cylindrical shape, and the upper and lower end portions of the inner cylinder are formed so as to spread outwardly. The outer cylinder of the exhaust pipe 10 can be omitted, and the main body 1 can also be used. 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 inside of the exhaust pipe 10 is connected to the upper outlet 5 through the communication port 9 of the valve seat 16. A swirl chamber 14 is formed between the lower inner surface of the main body 1 and the inner surface of the bottom lid 6, 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 drain port 8. A long cylindrical hollow filter 22 is disposed inside the swirl chamber 14 and the exhaust pipe 10. The filter 22 is closed by fixing the upper end to the valve seat 16 by welding and fixing the plug 23 to the lower end by welding. The filter 22 has a large number of fine through holes, captures foreign matters such as dust and scale from the fluid flowing down the inlet 4 and the annular space 11, and discharges the fluid to the outlet 5 side. The filtration particle size of the filter 22 is preferably about 0.5 to 10 microns. About half of the total length of the filter 22 is located in the exhaust pipe 10, and the other half is located in the swirl chamber 14.

A long cylindrical hollow upstream filter 24 is disposed outside the swirl chamber 14 and the filter 22 inside the exhaust pipe 10. The upper end of the upstream filter 24 is brought into contact with the lower inner wall of the exhaust pipe 10 and the lower end thereof is fixed to the plug 23 by welding so as to be closed. The upstream filter 24 has a large number of fine through holes, captures foreign matters such as dust and scale from the fluid flowing down the inlet 4 and the annular space 11, and discharges the fluid to the filter 22 side. The filtration particle size of the upstream filter 24 is preferably about 20 to 100 microns. About 10% of the total length of the upstream filter 24 is located in the exhaust pipe 10, and the remaining 90% is located in the swirl chamber 14. A collision plate 25 is disposed around the outer periphery of the upstream filter 24 along the axial direction of the upstream filter 24. In the present embodiment, four collision plates 25 are arranged radially on the left and right and front and rear. The collision plate 25 has its upper end in contact with the lower end of the exhaust pipe 10 and has its lower end fixed to the plug 23 by welding. The collision plate 24 separates medium-sized foreign matters such as dust and scale from the fluid flowing down the annular space 11 by collision and flows down to the liquid storage chamber 15. A partition member 17 is disposed between the swirl chamber 14 and the liquid reservoir chamber 15. The partition member 17 has a disk shape and has four protrusions 18 on the outer periphery, and the outer ends of the protrusions 18 are fixed to the bottom lid 6 by welding. 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 bottom cover 6.

The operation of the gas-liquid separator is as follows. A gas containing foreign matter such as liquid, dust or scale entering from the inlet 6 is swirled by swirl vanes 12. A liquid having a large mass or a foreign substance having a large particle size is swung out by the action of centrifugal force and separated, flows down along the inner peripheral wall of the main body 1, and accumulates through a liquid passage gap 19 between the protrusions 18. It flows into the chamber 15 and is discharged out of the system through the drainage port 8. Medium-sized foreign matter contained in the swirling flow collides with the collision plate 25 and is separated, flows down the swirl chamber 14 along the collision plate 25, and passes through the liquid passage gap 19 between the protrusions 18. It flows into the chamber 15 and is discharged out of the system through the drainage port 8. The small foreign matter contained in the swirling flow is captured and separated when passing through the upstream filter 24. Fine foreign matter having a particle size that has passed to the inside of the upstream filter 24 is captured and separated when passing through the filter 22. The gas that has passed to the inside of the filter 22 flows out from the outlet 5 through the communication port 9.

Medium foreign particles having a particle size collide with the collision plate 25 and are separated and flow down along the collision plate 25 to the liquid storage chamber 15, and foreign particles with a small particle size are captured by the upstream filter 24. Foreign matter is captured by the filter 22. Therefore, it is possible to prevent the filter 22 from being clogged relatively early, and it is not necessary to frequently wash or replace the filter 22.

INDUSTRIAL APPLICABILITY The present invention can be used for all types of gas-liquid separators in which a liquid that is mixed in gas is swirled in the casing and separated by centrifugal force and a filter for filtering the fluid is disposed in the casing. .

DESCRIPTION OF SYMBOLS 1 Main body 2 Entrance / exit member 3 Clamp joint 4 Bottom cover 5 Plug hole 6 Inlet 7 Outlet 8 Drainage port 9 Communication port 10 Exhaust pipe 11 Annular space 12 Swirling blade 13 Communication hole 14 Swivel chamber 15 Reservoir chamber 16 Valve seat 17 Partition member 18 Protrusion 19 Liquid passage gap 22 Filter 23 Plug 24 Upstream filter 25 Collision plate

Claims (1)

The swirl vane is arranged in an annular space formed by the casing and the exhaust pipe, the upper part of the swirl vane is connected to the inlet, the upper part is connected to the outlet through the hole inside the exhaust pipe, and the liquid storage chamber is formed below the annular space. The lower end of the liquid reservoir chamber is connected to the drainage port, and a cylindrical filter that filters the fluid is disposed between the exhaust pipe and the liquid reservoir chamber. A cylindrical upstream filter is filtered outside the filter, the upstream filter has a larger filter particle size than the filter particle size, and a collision plate is placed around the upstream filter along the axial direction of the upstream filter. A gas-liquid separator characterized by that.

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