JP2005172398A - Gas-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-liquid separator for maintaining the high separation efficiency of gas-liquid, by efficiently separating condensate flowing down along an inner peripheral wall surface of a vapor pipeline. <P>SOLUTION: An inlet 1 and an outlet 2 are formed at both the end sections of a separator casing 3. A cylindrical liquid collecting member 4 is incorporated into the separator casing 3. A liquid passage 5 is provided between the liquid collecting member 4 and the separator casing 3. Guide grooves 13, 14, 15 are formed at the inner periphery of the separator casing 3. A liquid outlet 6 is mounted to the lower end section of the fluid passage 5. Condensate flowing down on the inner peripheral wall surface of the vapor pipeline flows in from the inlet 1 of the gas-liquid separator 12, passes through the liquid passage 5 from the liquid collecting member 4 and is discharged to the outside from the liquid outlet 6, thus separating the condensate from vapor. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a gas-liquid separator that separates liquid such as condensed water or condensed water when steam, compressed air, various gases, or the like flows down in a gas pipe.

  A gas-liquid separator separates the mixed fluid of gas and liquid by filtering with a filter, separates them by centrifugal force by giving a swirling flow, or separates the mixed fluid by colliding with a collision member Is.

  In this gas-liquid separator, the mixed fluid from which gas and liquid are once separated and flowed down in the pipeline until they flow into the gas-liquid separator is essentially unnecessary at the inlet of the gas-liquid separator. Since the gas and liquid were mixed, and then the gas and liquid were separated again in the gas-liquid separator body, there was a problem that the gas-liquid separation efficiency could not be increased to a predetermined value or more.

When a mixed fluid of gas and a small amount of liquid compared to gas flows down in a straight tubular gas pipe, the liquid flows down along the inner peripheral wall surface of the cylindrical pipe. Most of the gas flows down inside the remote pipe, and no water droplets flow down. A small amount of mist-like liquid that cannot be visually confirmed is mixed in the gas and flows down inside the pipe line away from the inner peripheral wall surface. In addition, the liquid does not flow along only the bottom wall surface of the inner peripheral wall surface of the cylindrical pipe line, but also flows along the side wall portion of the cylindrical inner peripheral wall surface or a small amount of the upper wall portion along with the gas flow. To do.
JP 2002-28422 A

  The problem to be solved is that the gas-liquid mixed fluid once separated in the pipeline until it flows into the gas-liquid separator is not mixed at the inlet of the gas-liquid separator. An object of the present invention is to provide a gas-liquid separator capable of maintaining high gas-liquid separation efficiency by flowing into the separator and performing gas-liquid separation.

  The present invention separates the mixed fluid of gas and liquid flowing down in the gas pipe into liquid and gas, respectively, and arranges a cylindrical liquid collecting member substantially along the inner peripheral wall surface of the gas pipe, A liquid passage is formed between the cylindrical liquid collecting member and the separator casing, and a guide groove for guiding the passage of the liquid is formed on the inner peripheral surface or the outer peripheral surface of the liquid passage. It is characterized by providing a liquid outlet for discharging out of the system.

  The gas-liquid separator of the present invention has a gas passage formed by arranging a cylindrical liquid collecting member substantially along the inner peripheral wall surface of the gas pipe and forming a liquid passage between the liquid collecting member and the separator casing. Gas and liquid can be separated by allowing the liquid flowing down along the inner peripheral wall surface of the pipeline to pass from the liquid collecting member to the liquid passage. Gas that has already been separated in the tubular gas pipeline and liquid does not mix at the inlet of the gas-liquid separator, and flows down along the bottom wall of the inner circumferential wall of the gas pipeline Not only the liquid flowing down along the side wall and upper wall of the inner peripheral wall surface of the gas pipe, but also the liquid and the liquid flowing down in the gas pipe can be separated by a cylindrical liquid collecting member There is an advantage that can be reliably separated.

  In the gas-liquid separator of the present invention, a guide groove that guides the passage of the liquid is formed on the inner peripheral surface or the outer peripheral surface of the liquid passage, so that the liquid flowing down along the inner peripheral wall surface of the gas conduit The guide groove can surely flow down.

  In the present invention, a cylindrical liquid collecting member that is substantially along the inner peripheral wall surface of the gas pipe is arranged so that the steam or compressed air flowing in the gas pipe or mixed from various gases is mixed. It separates liquids such as water and condensed water, and it is only necessary to improve a part of the existing gas pipeline, and a gas-liquid separator can be easily installed.

  In this embodiment, an example of a gas-liquid separator that separates condensate as condensed water of steam mixed in the steam pipe from steam will be described. In FIG. 1, a cylindrical separator casing 3 in which an inlet 1 and an outlet 2 are formed substantially coaxially, a cylindrical liquid collecting member 4 disposed in the separator casing 3, and an outer periphery of the liquid collecting member 4 The liquid passage 5 provided and the liquid discharge port 6 attached to the lower end of the liquid passage 5 constitute a gas-liquid separator 12.

  A straight tubular inlet-side steam pipe (not shown) is connected to the inlet 1, and similarly, an outlet-side steam pipe is connected to the outlet 2. The inner diameter of the inlet side steam pipe and the inner diameter of the inlet 1 are the same. An inlet 1 side end 9 of the liquid collecting member 4 is opened in the vicinity of the inlet 1, and a liquid passage 5 is formed between the outer periphery of the liquid collecting member 4 and the inner periphery of the separator casing 3. Guide grooves 13, 14, 15 are formed on the outer peripheral surface of the liquid passage 5, that is, on the inner periphery of the separator casing 3, as shown in an enlarged sectional view in FIG. 2. In this embodiment, the guide groove 13 is formed on the bottom wall of the separator casing 3, the guide groove 14 is formed on the side wall, and the guide groove 15 is formed on the upper wall surface. The guide grooves 13, 14, 15 start from the outer peripheral position of the end portion 9, and the guide grooves 13, 14, 15 extend along the inner periphery of the separator casing 3 at the end portion thereof, that is, the liquid discharge port 6 portion of the separator casing 3. Communicate. The guide groove may be formed on the inner peripheral surface of the liquid passage 5, that is, on the outer periphery of the liquid collecting member 4.

The cross-sectional area of the liquid passage 5 does not match the central axis of the separator casing 3 and the central axis of the liquid collecting member 4 so that the lower passage cross-sectional area 7 is larger than the upper passage cross-sectional area 8. It arrange | positions so that the center axis | shaft of the liquid aggregation member 4 may be located upwards only predetermined distance. The end 9 on the inlet 1 side of the cylindrical liquid collecting member 4 has a diameter slightly smaller than the inner diameter of the inlet 1.

The inlet 1 and the liquid passages 7 and 8 are connected continuously and smoothly. The liquid passages 7 and 8 have a shape covering the entire circumference of the cylindrical liquid collecting member 4, and a liquid discharge port 6 is attached to the lower end portion thereof. A liquid discharge pipe 10 and a valve 11 are attached to the liquid discharge port 6. The valve 11 is preferably one that can arbitrarily adjust the valve opening from a minute opening to a full opening.

  The condensate of the mixed fluid of steam and condensate flowing down from the left side in the inlet side steam pipe connected to the inlet 1 is not only applied to the bottom wall of the inner peripheral wall of the steam pipe but also to the side wall or the upper wall. It flows down along. In this way, the condensate flowing down the inner peripheral wall surface of the steam pipe reaches the separator casing 3 from the inlet 1 and is led from the end 9 of the cylindrical liquid collecting member 4 to the liquid passages 7 and 8. As a result, it is separated from the steam flowing down the central part of the pipeline. The condensate guided to the liquid passages 7 and 8 surely flows down to the liquid discharge port 6 along the guide grooves 13, 14 and 15 formed in the inner periphery of the separator casing 3. The vapor separated into liquid and liquid flows down from the outlet 2 to a predetermined location, while the condensate is discharged from the liquid discharge port 6 of the liquid passage 5 to the outside through the valve 11.

  Thus, the steam and condensate can be reliably gas-liquid separated from the mixed fluid of the steam and condensate flowing down from the steam line to the gas-liquid separator 12.

  In the present embodiment, an example in which the liquid collecting member 4 is formed in a cylindrical shape and disposed around the entire circumference of the separator casing 3 is shown. An assembly member can also be arranged.

  Condensate flowing down along the inner peripheral wall surface of the steam pipe can be efficiently separated with a simple configuration.

The cross-sectional block diagram which shows the Example of the gas-liquid separator of this invention. FIG. 2 is an enlarged sectional view taken along line AA in FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inlet 2 Outlet 3 Separator casing 4 Liquid gathering member 5 Liquid passage 6 Liquid discharge port 7 Lower liquid passage 8 Upper liquid passage 13, 14, 15 Guide groove

Claims (1)

In the case where the mixed fluid of gas and liquid flowing down in the gas pipe is separated into liquid and gas, respectively, a cylindrical liquid collecting member is disposed substantially along the inner peripheral wall surface of the gas pipe. A liquid passage is formed between the liquid collecting member and the separator casing, a guide groove for guiding the passage of the liquid is formed on the inner peripheral surface or outer peripheral surface of the liquid passage, and the liquid is discharged from the liquid passage to the outside of the system. A gas-liquid separator characterized in that a liquid discharge port is provided.

Images