JP2010214276A - Gas-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-liquid separator of which the period until clogging of a filter is extended. <P>SOLUTION: A roughly cylindrical double exhaustion pipe 5 is disposed in a casing comprising an upper casing 3, a lower casing 8 and a bottom casing 13. A swirl vane 11 is arranged between an inner cylinder and an outer cylinder of the exhaust pipe 5. The upper part of the swirl vane 11 is connected to an inlet 7 via a filter 6 for foreign matter collecting, and the upper part thereof is connected to an outlet 12 via the inside of the inner cylinder of the exhaustion pipe 5. A liquid reservoir chamber 15 is formed under the exhaustion pipe 5 and the lower end of the liquid reservoir chamber 15 is connected to a liquid discharge port 18. A foreign matter reservoir space 9 is formed between the outside of the outer cylinder of the exhaustion pipe 5 below the filter 6 and the inside of the upper casing 3. Since a part of foreign matters flowing in from the inlet 7 does not flow to the filter 6 and flows down into the foreign matter reservoir space 9 and not collected in the filter 6, thereby the period until clogging of the filter 6 is extended. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to 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 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 a double substantially cylindrical exhaust pipe is arranged in the casing, a swirl vane is arranged between the inner cylinder and the outer cylinder of the exhaust pipe, and the upper part of the swirl vane is passed through a filter for capturing foreign matter. And the upper part is connected to the outlet through the inside of the inner cylinder of the exhaust pipe, a liquid reservoir chamber is formed below the exhaust pipe, and the lower end of the liquid reservoir chamber is connected to the drain port.

JP 2002-276890 A

The above conventional gas-liquid separator captures foreign matter such as dust, rust, and scale flowing in from the inlet and does not flow down to the secondary side, but the filter is clogged in a relatively short period of time. There was a problem.

Therefore, the problem to be solved by the present invention is to provide a gas-liquid separator capable of extending the period until the filter is clogged.

In order to solve the above problems, the gas-liquid separator of the present invention has a double substantially cylindrical exhaust pipe disposed in a casing, and swirl vanes disposed between the inner cylinder and the outer cylinder of the exhaust pipe. The upper part of the swirl vane is connected to the inlet through a filter for capturing foreign matter, the upper part is connected to the outlet through the inner side of the inner cylinder of the exhaust pipe, and a liquid reservoir chamber is formed below the exhaust pipe to form the liquid reservoir. In the case where the lower end of the chamber is connected to the drainage port, a foreign substance storage space is formed between the outside of the outer cylinder of the exhaust pipe below the filter and the inside of the casing.

According to the present invention, since the foreign substance reservoir space is formed between the outside of the outer cylinder of the exhaust pipe below the filter and the inside of the casing, a part of the foreign substance flowing in from the inlet does not flow down to the filter. By flowing down to the foreign substance accumulation space and not being captured by the accumulation filter, there is an effect that a period until the filter is clogged can be extended.

It is a fragmentary sectional view of what combined the gas-liquid separator concerning embodiment of this invention with the pressure-reduction valve.

Hereinafter, an embodiment of the present invention will be described with reference to FIG. In the illustrated embodiment, a gas-liquid separator 1 according to the present invention is integrally combined with a pressure reducing valve 2. A double substantially cylindrical exhaust pipe 5 and a tapered filter 6 for capturing foreign matter are arranged concentrically around the main valve 4 of the pressure reducing valve 2 located at the center of the upper casing 3. The upper part of the outer periphery of the filter 6 is connected to the inlet 7. The outer cylinder of the exhaust pipe 5 is straight and formed lower than the inner cylinder. The filter 6 is placed on the outer cylinder of the exhaust pipe 5, the outer cylinder of the exhaust pipe 5 is placed on the lower casing 8, and the lower casing 8 is fastened to the upper casing 3 with bolts, whereby the filter 6 is attached to the exhaust pipe 5. The outer cylinder is fixed between the lower casing 8 and the upper casing 3, and the exhaust pipe 5 is fixed between the lower casing 8 and the upper casing 3. The filter 6 is a stainless steel thin plate with a number of small circular holes. A foreign substance reservoir space 9 is formed between the outside of the outer cylinder of the exhaust pipe 5 below the outer periphery of the filter 6 and the inside of the upper casing 3. The upper casing 3 is provided with a blow port 26 for connecting the foreign matter reservoir space 9 to the outside, a blow pipe 27 is connected to the blow port 26, and a blow valve 28 is disposed on the blow pipe 27.

The lower part of the inner periphery of the filter 6 is connected to an annular space 10 formed between the inner and outer cylinders of the exhaust pipe 5. A swirl vane 11 is formed integrally with the exhaust pipe 5 in the annular space 10. The inside of the inner cylinder of the exhaust pipe 5 is connected to the outlet 12 through a space with the upper main valve 4. A bottom casing 13 is fastened to the lower casing 8 with bolts to form a swirl chamber 14 inside and a liquid reservoir chamber 15 below the swirl chamber 14. A float seat 16 is formed in the bottom casing 13, and a drain valve seat 17 is attached to the inner end of the drain port 18.

A hollow spherical valve float 19 is disposed in the liquid reservoir 15. The valve float 19 rises and falls according to the liquid level, opens and closes the drain valve port of the drain valve seat 17, and discharges only the liquid from the drain port 18 out of the system. The valve float 19 is covered with a reverse cup-shaped partition member 20. The partition wall member 20 is an outer peripheral wall having a hemispherical upper part and a cylindrical periphery, and has two legs protruding at the lower end and the front side, and the legs are fixed to the bottom casing 13 with screws. A vent hole 23 that communicates the inside and the outside is formed in the upper part of the partition member 20, and a liquid passage hole 24 that communicates the inside and the outside is formed in the lower part.

The operation of the gas-liquid separator is as follows. A gas containing foreign matter and liquid flows from the inlet 7. Part of the foreign matter flowing in from the inlet 7 does not flow down to the filter 6 but flows down to the foreign matter storage space 9 and is not captured by the filter 6, so that the period until the filter 6 is clogged can be extended. Foreign matter in the foreign matter storage space 9 is blown to the outside by the blow valve 28. Part of the foreign matter flowing in from the inlet 7 flows down to the filter 6 and is captured. The gas containing the liquid that has passed through the filter 6 is swirled by the swirl vanes 11. The liquid is swung out by the action of centrifugal force and separated, and flows down along the inner peripheral wall of the lower casing 8. The gas in the center flows through the inside of the inner cylinder of the exhaust pipe 5 toward the main valve 4 of the pressure reducing valve 2 and flows out to the outlet 12. The separated liquid flows inward through the liquid passage hole 24 of the partition wall member 20 and is discharged to the outside through the drainage port 18 by the rising and lowering of the valve float 19.

INDUSTRIAL APPLICATION This invention can be utilized for the gas-liquid separator which raise | generates the swirl | vortex flow in a casing and isolate | separates it by centrifugal force in the gas.

DESCRIPTION OF SYMBOLS 1 Gas-liquid separator 2 Pressure reducing valve 3 Upper casing 5 Exhaust pipe 6 Filter 7 Inlet 8 Lower casing 9 Foreign material storage space 11 Swirling blade 12 Outlet 13 Bottom casing 15 Liquid storage chamber 18 Drainage port

Claims (1)

A double substantially cylindrical exhaust pipe is arranged in the casing, a swirl vane is arranged between the inner cylinder and the outer cylinder of the exhaust pipe, and the upper part of the swirl vane is connected to the inlet via a filter for capturing foreign matter. The exhaust pipe is connected to the outlet through the inside of the inner cylinder of the exhaust pipe, the liquid reservoir chamber is formed below the exhaust pipe, and the lower end of the liquid reservoir chamber is connected to the drain outlet. A gas-liquid separator, characterized in that a foreign substance storage space is formed between the outer side of the outer cylinder and the inner side of the casing.

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