JP2010065825A - Steam trap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steam trap, preventing the operation of a valve mechanism from being obstructed by foreign matter in fluid. <P>SOLUTION: A steam trap part 14 and a strainer part 15 are disposed vertically in a series, and interposed and fixed between a pair of flanges 6, 7 of pipes 4, 5 by bolts 8 and nuts 9 as external connecting members. A centering flange 2 is provided on the outer periphery of a casing 1 for a strainer. Foreign matters such as rust or contaminants getting mixed in a mixed fluid of steam and condensate flowing in from an inlet 12 is captured by a filter 3 not to flow in the steam trap part 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention has a function of automatically discharging the condensate generated when the steam is deprived of heat and condensing in various steam using devices and steam pipes, and preventing the leakage of steam to the outside. Relates to steam traps.

  In the conventional steam trap, a cylindrical casing is fixed with a bolt and a nut between a pair of flanges of a pipe by an external connecting member.

In the conventional steam trap, when foreign matter such as rust and dust is mixed in the fluid flowing into the steam trap, the foreign matter adheres to and accumulates on the valve mechanism, and the valve mechanism operates imperfectly. As a result, there is a problem in that steam that should not be discharged is leaked to the outside.
JP-A-5-332495

  The problem to be solved is to provide a steam trap that does not reach the valve mechanism and does not hinder the operation of the valve mechanism even if foreign matter such as rust or dust is mixed in the fluid.

  The present invention provides a casing that is sandwiched and fixed between a pair of flanges of piping by an external connecting member, a valve mechanism is provided inside the casing, and condensate condensed with steam is discharged from the valve mechanism to the outside. In the case where a centering flange is provided on the outer periphery of the casing, a strainer casing having substantially the same shape as the casing is disposed on the inlet side of the casing, and foreign matter mixed in the fluid inside the strainer casing. The filter which captures is attached.

According to the present invention, the strainer casing is disposed on the inlet side of the trap casing, and the filter is attached to the inside of the strainer casing, so that foreign matters can be captured by the filter, and the valve mechanism operates. Will not be disturbed.

  In the present invention, the strainer casing is disposed on the inlet side of the trap casing, but it is desirable to provide a centering flange on the outer periphery of the strainer casing.

  As shown in FIG. 1, the steam trap of the present invention includes a steam trap portion 14 and a strainer portion 15 that are arranged in series in the vertical direction. Although the inside of the steam trap part 14 is not shown in figure, it has a structure substantially the same as the conventional steam trap. The centering flange 2 is attached to the outer periphery of the strainer casing 1 of the strainer portion 15. The steam trap portion 14 and the strainer portion 15 are disposed between the flanges 6 and 7 of the pipes 4 and 5 indicated by the two-dot chain line, and are sandwiched by a connecting means including a bolt 8 and a nut 9.

  A disk-shaped centering flange 2 is provided on the outer periphery of a cylindrical strainer casing 1. A filter 3 having a U-shaped cross section is fixed inside the casing 1 with a stopper 10. The filter 3 is provided with a large number of small diameter through holes 11. While the fluid containing the foreign substance flowing in from the upper inlet 12 flows down to the lower outlet 13 side, the foreign substance cannot be passed through the small-diameter through hole 11 and is thus captured by the filter 3. .

  The mixed fluid of steam and condensate from which foreign substances have been removed flows into the steam trap section 14, and only the condensate is discharged into the lower pipe 5 through a valve mechanism (not shown), thereby preventing steam leakage. It is. A centering flange 16 similar to the strainer casing 1 is also attached to the outer periphery of the steam trap portion 14.

  When the fluid from which foreign matter has been removed flows into the steam trap section 14, foreign matter does not adhere to and accumulate on the valve mechanism, and the operation of the valve mechanism is not hindered.

The partial cross section block diagram of the steam trap of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Strainer casing 2 Centering flange 3 Filter 4,5 Piping 6,7 Flange 8 Bolt 9 Nut 10 Stopper 11 Small diameter through-hole 12 Inlet 13 Outlet 14 Steam trap part 15 Strainer part 16 Centering flange

Claims (1)

A casing that is sandwiched and fixed between a pair of flanges of the pipe by an external connecting member, and a valve mechanism is provided inside the casing to discharge condensate condensed with steam to the outside from the valve mechanism. A strainer casing having a centering flange provided on the inlet side of the casing, the strainer casing having the same shape as the casing is disposed, and the foreign substance mixed in the fluid is captured inside the strainer casing. A steam trap, characterized by having attached.

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