JP2010065833A - Gas-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the gas-liquid separator hardly allowing foreign matter flowing down along the inner circumferential wall of a casing to flow to the inside of a partition member. <P>SOLUTION: The swirl vane 11 is arranged to an annular space 10 formed with an upper casing 3 and an exhaust pipe 5. The upper part of the annular space 10 is connected to an inlet 7 and its upper part is connected to an outlet 12 through the inside hole of the exhaust pipe 5. A swirl chamber 14 is formed downward of the annular space 10 and a drain valve chamber 15 is formed downward of the swirl chamber 14 andthe valve float 19 is arranged in the drain valve chamber 15, and a reverse cup-shaped partition member 20 is arranged between the swirl chamber 14 and the drain valve chamber 15. A clearance 22 for liquid passage is formed between the outer circumferential wall of the partition member 20 and the inner circumferential wall of the lower casing 8. While forming the vent hole 23 which communicates inside and outside in the upper part of the partition member 20, the communication liquid passage hole 24 is formed inside and outside on the lower part. The drain valve chamber 15 is divided into inside and outside on the outside of the circumferential wall of the partition member 20, and the partition pipe 25 to open the upper end rather than the liquid passage hole 24 of the partition member 20 on the upper part is provided while plugging up a lower end. <P>COPYRIGHT: (C)2010,JPO&amp;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.

  In the conventional gas-liquid separator, a swirl vane is arranged in an annular space formed by a casing and an exhaust pipe, the upper part of the annular space is connected to the inlet, and the upper part is connected to the outlet through a hole inside the exhaust pipe, A swirl chamber below the space and a drain valve chamber formed below the swirl chamber to dispose the drain valve in the drain valve chamber, an inverted cup-shaped partition wall member disposed between the swirl chamber and the drain valve chamber, A liquid passage gap is formed between the outer peripheral wall of the partition member and the inner peripheral wall of the casing, and a vent hole that communicates the inside and the outside is formed in the upper part of the partition member, and a liquid passage hole that communicates the inside and the outside is formed in the lower part. It is.

In a gas-liquid separator equipped with a drain valve, there is a disadvantage that liquid such as condensate or condensed water cannot be discharged if foreign matter such as dust or rust is clogged in the drain valve portion. In the above-mentioned prior art, the drain valve portion is relatively early because the foreign matter swung out to the outside by swirling and flowing down along the inner peripheral wall of the casing flows into the inside of the partition member through the liquid passage hole in the lower portion of the partition member. There was a problem that was stuck.
Japanese Utility Model Publication No. 62-42238

  Therefore, the technical problem of the present invention is to make it difficult for foreign matter flowing down along the inner peripheral wall of the casing to flow into the inside of the partition member.

  The technical means of the present invention devised to solve the above technical problem is to arrange a swirl vane in an annular space formed by a casing and an exhaust pipe, connect the upper part of the annular space to an inlet, The upper part of the swirl chamber and the drainage valve chamber are connected to the outlet through the holes of the swirl chamber, a swirl chamber is formed below the annular space, a drain valve chamber is formed below the swirl chamber, and a drain valve is disposed in the drain valve chamber. An inverted cup-shaped partition member is disposed between the partition wall member, a liquid passage gap is formed between the outer peripheral wall of the partition member and the inner peripheral wall of the casing, and a vent hole is formed in the upper portion of the partition member to communicate the inside and outside. In the case where the liquid passage hole communicating with the inside and the outside is formed, a drain cylinder is formed outside the outer peripheral wall of the partition wall member to close the drain valve chamber inside and outside, and the lower end is closed and the upper end is opened above the liquid passage hole of the partition wall member. The gas-liquid separator is provided.

  In the present invention, foreign matter that has flowed down along the inner peripheral wall of the casing accumulates at the bottom of the outer side of the partition tube, and does not easily flow into the inner side of the partition tube. An excellent effect is obtained that a liquid such as water can be discharged well.

  In the gas-liquid separator of the present invention, a drain valve chamber is provided inside and outside of the outer peripheral wall of the partition wall member, the lower end is closed, and a partition cylinder having an upper end opened above the liquid passage hole of the partition member is provided. . For this reason, the foreign matter that has flowed down along the inner peripheral wall of the casing accumulates at the bottom of the outer side of the partition tube, and does not easily flow into the inner side of the partition tube. For this reason, the drain valve part is not easily clogged, and liquids such as condensate and condensed water can be discharged well over a long period of time.

  An embodiment showing a specific example of the above technical means will be described (see FIG. 1). 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 screen 6 are arranged concentrically around the main valve 4 of the pressure reducing valve 2 located at the center of the upper casing 3. An inlet 7 is connected to the outer periphery of the screen 6. The outer cylinder of the exhaust pipe 5 is placed on the inner end of the upper surface of the lower casing 8, the screen 6 is placed on the outer cylinder of the exhaust pipe 5, the lower casing 8 is fastened to the upper casing 3 with bolts, and the exhaust pipe 5 is It fixes between the casings 3.

  The outer cylinder of the exhaust pipe 5 is straight and formed lower than the inner cylinder. The outer cylinder can be omitted, and the upper casing body 3 can also be used. The inner cylinder of the exhaust pipe 5 has a shape in which the upper part and the lower part are gently expanded. A swirl vane 11 is formed integrally with the exhaust pipe 5 in an annular space 10 formed between the inner and outer cylinders of the exhaust pipe 5.

  The inlet 7 is connected to the lower annular space 10 through the screen 6, and the inner side 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 drain valve chamber 15 below the swirl chamber 14. A float seat 16 is formed on 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 drain valve chamber 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 outer diameter of the outer peripheral wall of the partition wall member 20 is smaller than the inner diameter of the lower casing 8, and a liquid passage gap 22 is formed between them. A partition cylinder 25 is provided outside the outer peripheral wall of the partition wall member 20 to partition the drain valve chamber 15 in and out, close the lower end, and open the upper end above the liquid passage hole 24 of the partition wall member 20. The bottom casing 13 is provided with a blow port 26 for connecting the outer bottom portion of the partition tube 25 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.

  A gas containing foreign matter such as dust and rust and liquid flows from the inlet 7. The relatively large foreign matter is captured by the screen 6, and the gas containing the relatively small foreign matter and liquid that has passed through the screen 6 is swirled by the swirl vanes 11. Foreign matter and liquid are swung out and separated by the action of centrifugal force, and flow down along the inner peripheral wall of the lower casing 8. The gas in the center passes 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 foreign matter is collected at the bottom of the outer side of the partition tube 25 and blown to the outside by the blow valve 28. The separated liquid flows from the upper end of the partition tube 25 into the partition member 20 through the liquid passage hole 24 of the partition member 20. At this time, the gas inside the partition member 20 exits to the outside of the partition member 20 through the vent hole 23. The valve float 19 rises and falls according to the water 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 foreign matter that has flowed down along the inner peripheral wall of the lower casing 8 collects at the bottom of the outer side of the partition tube 25 and does not easily flow into the inner side of the partition tube 25. The liquid can be discharged well over a long period of time.

The fragmentary sectional view of what combined the gas-liquid separator by this invention with the pressure reducing valve.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gas-liquid separator 2 Pressure reducing valve 3 Upper casing 5 Exhaust pipe 6 Screen 7 Inlet 8 Lower casing 10 Annular space 11 Swirling blade 12 Outlet 13 Bottom casing 14 Swivel chamber 15 Drain valve chamber 17 Drain valve seat 18 Drain port 19 Valve float 20 Partition member 22 Liquid passage gap 23 Vent hole 24 Liquid passage hole 25 Partition tube

Claims (1)

A swirl vane is disposed in an annular space formed by a casing and an exhaust pipe, the upper part of the annular space 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 drain valve chamber is formed below the swirl chamber, a drain valve is disposed in the drain valve chamber, a reverse cup-shaped partition wall member is disposed between the swirl chamber and the drain valve chamber, and the outer peripheral wall of the partition wall member and the casing A liquid passage gap is formed between the inner peripheral wall, a vent hole communicating with the inside and outside is formed at the upper part of the partition wall member, and a liquid passage hole communicating with the inside and outside is formed at the lower part. A gas-liquid separator, characterized in that a drain valve chamber is partitioned on the outside to close the lower end and the lower end is closed and the upper end is opened above the liquid passage hole of the partition wall member.

Images