JP2005169350A - Gas-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-liquid separator the separation efficiency of which can be kept high by efficiently separating condensate water falling along the inner peripheral wall surface of steam piping. <P>SOLUTION: An inlet 1 and an outlet 2 are formed at both ends of a casing 3 and a cylindrical liquid collecting member 4 is built in the casing 3. A liquid flow passage 5 is arranged between the liquid collecting member 4 and the casing 3. Projecting parts 13, 15 and through-holes 14, 16 are arranged on the side of the inner periphery of the liquid collecting member 4. The projecting part 13 is made higher than the projecting part 15. A liquid discharging port 6 is fit to the bottom end of the liquid flow passage 5. The condensate water falling along the inner peripheral wall surface of the steam piping is made to flow in the gas-liquid separator 12 through the inlet 1 and pass through the liquid collecting member 4 and the liquid flow passage 5 and discharged to the outside from the liquid discharging port 6, so that the condensate water can be separated from steam. <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 liquid collecting member and the separator casing, a liquid discharge port for discharging the liquid from the liquid passage to the outside of the system is provided, and a convex portion and the liquid passage are provided on the inner peripheral side of the liquid collecting member. And a height of the convex portion is increased at the lower portion of the liquid collecting member and lowered at the upper portion.

  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, the liquid flows into the inner peripheral side of the liquid collecting member by providing the convex portion and the through hole communicating with the liquid passage on the inner peripheral side of the liquid collecting member. Even so, the liquid and the liquid can be reliably separated by blocking the liquid at the convex portion and flowing down from the through hole to the liquid passage.

  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. A plurality of pairs of convex portions 13 and 15 and through holes 14 and 16 are provided on the inner peripheral side of the liquid collecting member 4. The positions of the convex portions 13 and 15 and the through holes 14 and 16 are such that the through holes 14 and 16 are positioned on the inlet 1 side and the convex portions 13 and 15 are positioned on the outlet 2 side.

The height of the convex part 13 located in the lower part of the liquid collecting member 4 is set higher than the height of the convex part 15 in the upper part. In the present embodiment, an example in which the two convex portions 13 and the through holes 14 are arranged at the lower portion of the liquid collecting member 4 and the one convex portion 15 and the through holes 16 are arranged at the upper portion is shown. The number and location of arrangement can be appropriately selected according to the amount and location of the liquid flowing down. Further, in the present embodiment, an example in which the convex portions 13 and 15 are attached in a partial circumference of the inner periphery of the liquid collecting member 4, that is, an arc shape is shown. It can also be formed on the entire circumference. Furthermore, the convex part formed in the perimeter can also be made into the continuous spiral shape.

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 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 7 through the valve 11 to the outside of the system.

  When a part of the condensate flowing in from the inlet 1 reaches the inner peripheral side of the liquid collecting member 4, the condensate is blocked by the convex portions 13 and 15, and the liquid passage 7 is formed from the through holes 14 and 16. , 8 can be reliably gas-liquid separated from the steam and condensate. In this case, by making the lower convex portion 13 higher than the upper convex portion 15, even if more condensate flows below the inner periphery of the liquid collecting member 4 due to the influence of gravity, it is ensured. It can flow down into the liquid passage 5.

  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.

Explanation of symbols

1 Inlet 2 Outlet 3 Separator casing 4 Liquid collecting member 5, 7, 8 Liquid passage 6 Liquid outlet 13, 15 Protrusion 14, 16 Through hole

Claims (1)

In the case of separating the mixed fluid of gas and liquid flowing down in the gas pipe into liquid and gas, respectively, a cylindrical liquid collecting member is disposed substantially along the inner peripheral wall surface of the gas pipe, and the liquid collecting member A liquid passage is formed between the liquid casing and the separator casing, and a liquid discharge port for discharging the liquid from the liquid passage to the outside of the system is provided. A gas-liquid separator characterized in that a hole is provided and the height of the convex portion is higher at the lower portion of the liquid collecting member and lower at the upper portion.

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