JP2012106154A - Gas-liquid separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas-liquid separator which improves gas-liquid separation efficiency by causing a separated liquid to easily inflow into a liquid reservoir chamber and prevents relatively early clogging of a filter.SOLUTION: The gas liquid separator is obtained by arranging a swirl vane 12 in a circular space 11 formed by a body 1 and an exhaust pipe 10; by linking the upper side of the swirl vane 12 to an entrance 6; by linking the upper side to an exit 7 through an inside opening of the exhaust pipe 10; by linking the under side of a liquid reservoir chamber 15 to a drainage opening 8 by forming a swirl chamber 14 and the liquid reservoir chamber 15 at the underside of the circular space 11; by arranging a cylindrical filter 22 used for fluid filtration and having a bottom head being in a closed state by a plug 23 in between the exhaust pipe 10 and the liquid reservoir chamber 15; by radially arranging plural impinging plates 24 for falling along an axial direction of the filter 22 in between the external wall of the plug 23 and internal walls of a body 1 and a bottom cover 4, for example, four pieces at right and left and at back and forth; and by arranging plural impinging plates 25 in the outer circumference of the filter 22 along the axial direction of the filter 22, for example, disposing four pieces at right and left and at back and forth.

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 lower part of the annular space is swirled. A fluid reservoir chamber is formed below the chamber and the swirl chamber, the lower portion of the reservoir chamber is connected to the drainage port, and the lower end portion is closed by a plug between the exhaust pipe and the reservoir chamber. And a partition member having a fluid passage gap between the swirl chamber and the liquid reservoir chamber and the outer peripheral wall of the outer casing.

Japanese Patent Laid-Open No. 2004-340552

In the above conventional gas-liquid separator, since the minute liquid swirling from the center of the swirl chamber cannot flow into the liquid reservoir, the separated liquid is again taken up in the gas flow and carried to the outlet. As a result, the gas-liquid separation efficiency was poor. Further, since the filter for filtering the fluid is clogged relatively early due to the accumulation of foreign matters such as dust and scale, there is a problem that the filter must be frequently disassembled to clean or replace the filter.

Therefore, the problem to be solved by the present invention is that the separated liquid can easily flow into the liquid storage chamber to improve the separation efficiency of the gas and liquid, and can prevent the filter from clogging relatively early. Is to provide.

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. The upper part is connected to the outlet, a swirl chamber is formed below the annular space, a liquid reservoir chamber is formed below the swirl chamber, and the lower part of the liquid reservoir is connected to the drain port, and the exhaust pipe and the liquid reservoir chamber A cylindrical filter for fluid filtration with the lower end closed by a plug is arranged between the outer peripheral wall of the plug and the inner peripheral wall of the casing, and flows down along the axial direction of the cylindrical filter. A collision plate is disposed, and a separation collision plate is disposed around the outer periphery of the cylindrical filter along the axial direction of the cylindrical filter.

According to the present invention, since the collision plate for the flow-down is arranged along the axial direction of the cylindrical filter between the outer peripheral wall of the plug and the inner peripheral wall of the casing, the microscopic swirl from the center of the swirl chamber is achieved. Since the liquid collides with the falling collision plate and flows down along the falling collision plate into the liquid reservoir chamber, there is an effect that the separated liquid easily flows into the liquid reservoir chamber. Further, by arranging the separation collision plate along the axial direction of the cylindrical filter around the outer circumference of the cylindrical filter, a small particle size foreign matter collides with the separation collision plate and is separated from the separation collision plate. Since it flows down to the liquid storage chamber along the falling collision plate, it is possible to prevent the filter from being clogged relatively early.

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.

Between the outer peripheral wall of the plug 23 and the inner peripheral wall of the main body 1 and the bottom cover 4, a falling collision plate 24 is disposed along the axial direction of the cylindrical filter. In the present embodiment, a plurality of the collision plates 24 for the flow-down are arranged radially, for example, four on the left and right and front and rear. The falling plate 24 is fixed at the upper end to the upper part of the outer peripheral wall of the plug 23 by welding. The falling collision plate 24 collides a minute liquid swirling from the center of the swirl chamber 14 and flows down to the liquid reservoir chamber. A separation collision plate 25 is disposed around the outer periphery of the filter 22 along the axial direction of the filter 22. In this embodiment, four separation collision plates 25 are arranged radially on the left and right and front and rear. The separation collision plate 25 is brought into contact with the lower inner wall of the exhaust pipe 10 at the upper end and fixed to the plug 23 by welding. The separation impingement plate 25 separates foreign matters having a small particle size such as dust and scale from the fluid flowing down the annular space 11 by the collision and flows down to the liquid storage chamber 15. About 10% of the total length of the separation collision plate 25 is located in the exhaust pipe 10, and the remaining 90% is located in the swirl chamber 14.

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 and separated by the action of centrifugal force, flows down along the inner peripheral wall of the main body 1, flows into the liquid storage chamber 15, and flows out of the system from the drain port 8 To be discharged. The small foreign matter contained in the swirling flow collides with the separation collision plate 25 and is separated and flows from the separation collision plate 25 along the falling collision plate 24 into the liquid storage chamber 15 from the swirling chamber 14 and drains. It is discharged out of the system through the mouth 8. The minute liquid swirling from the center of the swirl chamber 14 collides with the falling collision plate 24 and flows into the liquid reservoir chamber 15 from the swirling chamber 14 along the falling collision plate 24, and from the drain port 8. Discharged outside.

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 22 Filter 23 Plug 24 Collision plate for flow down 25 Collision plate for separation

Claims (1)

A swirl vane is arranged in an annular space formed by a casing and an exhaust pipe, the upper part of the swirl vane is connected to the inlet, the upper part is connected to the outlet through a hole inside the exhaust pipe, and the swirl chamber and the lower part are connected to the lower part of the annular space. A cylindrical shape for fluid filtration in which a liquid storage chamber is formed below the swirl chamber, the lower portion of the liquid storage chamber is connected to a drain outlet, and the lower end portion is closed by a plug between the exhaust pipe and the liquid storage chamber. In the filter arrangement, a falling collision plate is arranged along the axial direction of the cylindrical filter between the outer peripheral wall of the plug and the inner peripheral wall of the casing, and the cylindrical filter is arranged around the outer periphery of the cylindrical filter. A gas-liquid separator, characterized in that a collision plate for separation is arranged along the axial direction of the filter.

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