JP2005199161A - Gas-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-liquid separator capable of maintaining a high efficiency of gas-liquid separation by efficiently separating condensed water flowing down along the inner peripheral wall surface of a vapor pipeline. <P>SOLUTION: An opening 7 is formed on the lower end part of the vapor pipeline 1 and a vapor trap 9 is connected therewith. A cylindrical porous member 3 connected smoothly with the inner peripheral surface 2 of the vapor pipeline 1 is attached. A swirl vane 17 is fixedly arranged on an inlet 6 side of the porous member 3. A cover 4 is arranged on the outer periphery of the porous member 3 via a space 13. The condensed water flowing down along the bottom wall surface in the vapor pipeline 1 is drained to the outside through the opening 7 and the vapor trap 9. The condensed water flowing into the gas-liquid separator 5 passes through the porous member 3 and is drained from a vapor trap 15 to the outside. Accordingly, the condensed water and vapor are separated. <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 liquid flows down in a straight tubular gas pipe, the liquid flows down along the inner peripheral wall surface of the cylindrical pipe, and almost only gas is inside the pipe line away from the inner peripheral wall surface. Does not flow down, and water droplets do not flow down. A small amount of mist-like liquid that cannot be visually confirmed is flowing into the gas inside the pipeline 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 liquid and the gas from the mixed fluid of the gas and the liquid flowing down in the gas pipe, respectively, and arranges a cylindrical porous member substantially along the inner peripheral wall surface of the gas pipe, A swirl vane for swirling gas is disposed inside the cylindrical porous member, and the liquid flowing through the porous member separates the gas flowing down in the gas pipe and the liquid.

  The gas-liquid separator according to the present invention includes a porous member having a cylindrical shape substantially along the inner peripheral wall surface of the gas pipe, and a swirl vane for swirling gas inside the porous member. By separating the gas and liquid by passing the liquid through the gas, the gas and liquid that have already been separated in the straight tubular gas line before flowing down to the inlet of the gas-liquid separator are separated from each other. In addition to the liquid flowing down along the bottom wall surface of the inner peripheral wall surface of the gas conduit, the side wall portion and the upper wall portion of the inner peripheral wall surface of the gas conduit are not mixed at the inlet of the vessel. It can be separated by a cylindrical porous member including liquid flowing down, and there is an advantage that gas and liquid flowing down in the gas pipe can be reliably separated.

  In the present invention, a cylindrical porous member substantially extending along the inner peripheral wall surface of the gas pipe is disposed, and a swirl vane is disposed inside the porous member, so that steam or compression flowing down in the gas pipe It separates liquids such as condensate and condensed water mixed from air or various gases, etc., and it is only necessary to improve a part of the existing gas pipeline, and a gas-liquid separator can be installed easily. can do.

  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 steam pipe 1 in which steam flows from the left side to the right side, a cylindrical porous member 3, a swirl vane 17, and a porous member 3 substantially along the inner peripheral wall surface 2 of the steam pipe 1. A gas-liquid separator 5 is constituted by a cover 4 covering the outer periphery of the gas.

  An opening 7 is provided immediately before the inlet 6 of the gas-liquid separator 5 at the lower end of the steam line 1 on the inlet side, and is connected to the steam trap 9 via the line 8. The steam trap 9 is a kind of automatic valve that discharges only condensate as condensed water flowing in from the opening 7 to the outside and does not discharge steam to the outside.

  The gas-liquid separator 5 side end 10 of the steam line 1 is formed in a tapered shape and smoothly connected to the inner periphery 11 of the cylindrical porous member 3. The porous member 3 is a cylindrical member having a divergent shape so that its diameter increases as it extends in the direction of the right outlet side steam pipe 12, and has a large number of minute through holes extending from the surface to the inside thereof. Thus, the condensate flows down and prevents the condensate from flowing downstream, and allows the condensate to pass to the outer peripheral side of the porous member 3, that is, the cover 4 side.

The cylindrical porous member 3 may be made of sintered metal, porous ceramic, heat resistant synthetic resin, or the like. A propeller-shaped swirl vane 17 is fixedly attached to the inlet 6 side of the inner central portion of the porous member 3. In addition, by making the cylindrical porous member 3 divergent, the flow rate of the condensate flowing down along the inner periphery 11, and the steam flowing down the central portion away from the inner periphery 11 of the porous member 3 are shown. , And the condensate can be more reliably captured and passed to the cover 4 side at the inner periphery 11 of the porous member 3.

  A space 13 is provided between the porous member 3 and the cover 4, and an opening 14 is provided at the lower end thereof to connect the steam trap 15. The condensate flowing in along the inner peripheral wall surface 2 of the steam pipe 1 passes into the space 13 and part of the steam also passes, but only the condensate is discharged from the steam trap 15 to the outside. It is not discharged to the outside.

  The upper portion of the cover 4 and the downstream area of the outlet side steam pipe 12 are connected by a low pressure connection pipe 16. The low-pressure connection pipe 16 allows a part of the steam flowing into the space 13 to escape to the downstream area of the outlet-side steam pipe 12, so that the inner periphery 11 side of the porous member 3 and the space 13 are separated. By ensuring the differential pressure between them, the condensate can easily flow into the space 13 through the porous member 3 more reliably.

  The condensate in the mixed fluid of steam and condensate flowing down from the left side of the steam pipe 1 is not only along the bottom wall surface of the inner peripheral wall surface 2 of the steam pipe 1 but also along the side wall surface or the upper wall surface. It will flow down. Among these, the condensate flowing down the bottom wall surface is discharged from the steam trap 9 to the outside through the opening 7. Condensate on the bottom wall surface that cannot be discharged from the opening 7 and condensate that has flowed down the side wall surface and the upper wall surface reach the cylindrical porous member 3. On the other hand, the steam is swirled by the swirl vanes 17 and gently swung out on the inner peripheral surface 11 of the porous member 3, thereby allowing the condensate to flow from the inner peripheral 11 side of the porous member 3 to the space 13 side. It can be made easy. Condensate that has reached the porous member 3 passes into the space 13 by capillary action through a large number of minute through holes in the porous member 3. Condensate reaching the space 13 is discharged to the outside from the steam trap 15, while part of the steam reaching the space 13 is discharged from the low pressure connection pipe 16 to the downstream area of the outlet side steam pipe 12.

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 1 to the gas-liquid separator 5.

  In the present embodiment, the cylindrical porous member 3 has a divergent shape. However, the porous member 3 may be a straight tube.

  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

DESCRIPTION OF SYMBOLS 1 Steam pipe line 2 Inner peripheral wall surface 3 Porous member 4 Cover 5 Gas-liquid separator 7 Opening 9 Steam trap 12 Outlet side steam piping 17 Swirling blade

Claims (1)

In the case of separating the liquid and the gas from the mixed fluid of the gas and the liquid flowing down in the gas pipe, respectively, a cylindrical porous member substantially along the inner peripheral wall surface of the gas pipe is arranged, and the cylindrical shape A gas-liquid separator characterized by disposing a swirl vane for swirling gas inside a porous member, and separating the gas and the liquid flowing down in the gas pipeline by passing the liquid through the porous member.

Images