JP4152781B2 - Wafer type steam trap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steam trap that automatically discharges condensate generated in a steam piping system such as a steam transport pipe or a steam-using device, and more particularly, a wafer-type steam having a structure that is sandwiched and fixed between a pair of flanges of the pipe. Regarding traps.
[0002]
[Prior art]
[Patent Document 1]
JP, 5-332495, A The conventional wafer type steam trap is shown in JP, 5-332495, A. As understood from the publication, a valve member that opens and closes the outlet hole is disposed in the casing including the peripheral wall, one end wall having the inlet hole, and the other end wall having the outlet hole. The casing is fixed between a pair of flanges of the pipe by a connecting member via a pair of gaskets.
[0003]
[Problems to be solved by the invention]
In the above-mentioned conventional one, a peripheral wall for constituting the casing is required separately from the gasket for sealing between the pair of flanges of the piping, the number of parts is large, and the structure is inevitably complicated. There was a problem. Therefore, the technical problem of the present invention is to provide a wafer type steam trap having a simple structure with a reduced number of parts.
[0004]
[Means for Solving the Problems]
The technical means of the present invention devised to solve the above technical problem is a spiral wound type having an inner ring on the inner periphery of a gasket body and being fixed between a pair of flanges of a pipe by an external connecting member. A gasket, a peripheral wall formed of an inner ring of a spiral wound gasket, an end wall having a lead-out hole and hermetically attached to the peripheral wall, a valve member disposed facing the lead-out hole and opening and closing the lead-out hole; And a valve member is disposed in a space formed by the peripheral wall and the end wall .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In the wafer type steam trap of the present invention, a pair of flanges of piping is sealed with a spiral wound gasket and a peripheral wall is formed by an inner ring of the spiral wound gasket. Can also be used. Therefore, the structure can be simplified by reducing the number of parts.
[0006]
【Example】
An embodiment showing a specific example of the above technical means will be described (see FIGS. 1 and 2). The valve member 2 of the wafer type steam trap 1 of the present invention is disposed in a spiral wound gasket 3. The spiral wound gasket 3 is disposed between the flanges 6 and 7 of the pipes 4 and 5, and is sandwiched by connecting means including a bolt 8 and a nut 9.
[0007]
The spiral wound gasket 3 includes a gasket body 10 configured by overlapping a hoop material and a filler material and wound in a spiral shape, an outer ring 11 disposed on the outer periphery of the gasket body 10, and an inner periphery of the gasket body 10. The inner ring 12. Stainless steel is mainly used for the hoop material of the gasket body 10, asbestos, graphite, PTFE, inorganic paper or the like is used for the filler material, and carbon steel or stainless steel is generally used for the outer ring 11 and the inner ring 12.
[0008]
A peripheral wall 13 is formed by the inner ring 12 of the spiral wound gasket 3. An end wall 14 having a lead-out hole 15 in the center is airtightly attached to the peripheral wall 13 by welding. The valve member 2 is disposed above the outlet hole 15. The valve member 2 is urged toward the end wall 14 by a spring 16 attached to the upper part of the peripheral wall 13, and the outer peripheral lower surface abuts against the stepped portions of the plurality of ribs 17 formed on the upper surface of the end wall 14. The The valve member 2 includes a capsule 18 containing a volatile fluid and a valve body 19, and the lead-out hole 15 of the end wall portion 14 in the valve body 19 due to the phase of the fluid in the capsule 18 that changes according to the external pressure and temperature. It moves between the position to close and the position to open.
[0009]
When the temperature on the upstream side of the pipe 4 decreases, the volatile fluid in the capsule 18 condenses and the valve element 19 opens the outlet hole 15. Thereby, the condensate is discharged to the pipe 5 side which is the downstream side. When the temperature on the pipe 3 side rises due to the discharge of condensate, the volatile fluid in the capsule 18 is vaporized and the valve element 19 closes the outlet hole 15. This prevents steam leakage.
[0010]
【The invention's effect】
The present invention produces the following specific effects.
As described above, according to the present invention, by forming the peripheral wall with the inner ring of the spiral wound gasket, it is possible to reduce the number of components and provide a wafer type steam trap having a simple structure. .
[Brief description of the drawings]
FIG. 1 is a view showing a wafer type steam trap of the present invention fixed between a pair of flanges of a pipe. FIG. 2 is an enlarged view of a spiral wound gasket and a valve member of FIG.
DESCRIPTION OF SYMBOLS 1 Wafer type steam trap 2 Valve member 3 Spiral wound gasket 4, 5 Piping 6, 7 Flange 8 Bolt 9 Nut 10 Gasket body 11 Outer ring 12 Inner ring 13 Peripheral wall 14 End wall 15 Lead-out hole 16 Spring 17 Rib 18 Capsule 19 Valve body

Claims (1)

A spiral wound gasket that has an inner ring on the inner periphery of the gasket body and is fixed between a pair of pipe flanges by an external connecting member, a peripheral wall formed by the inner ring of the spiral wound gasket, and a lead-out hole An end wall that is airtightly attached to the peripheral wall, and a valve member that faces the outlet hole and opens and closes the outlet hole , and the valve member is disposed in a space formed by the peripheral wall and the end wall. A wafer-type steam trap.

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