Title:
VALVE, AND POWER GENERATION PLANT USING THE SAME
Document Type and Number:
Japanese Patent JP2013194902
Kind Code:
A
Abstract:
To inhibit a hardened layer from cracking by equalizing surface pressure loaded on a seal part when a valve is closed and by preventing a contact at one side.
In a valve 1 provided with a valving element 5 and a valve seat 3 inside a valve box 2, a soft layer and a hardened layer are sequentially provided on a slide face of the valve seat 3 with the valving element 5 toward the slide face direction to equalize surface pressure load acted on the slide face of the valve seat 3. The hardened layer is fixed to the valve seat 3 by means of cure adhesion or the like via the soft layer.
Inventors:
TAZAWA TOSHIYUKI
KOJIMA NOBUO
NISHINO KOJI
KOJIMA NOBUO
NISHINO KOJI
Application Number:
JP2012066372A
Publication Date:
September 30, 2013
Filing Date:
March 22, 2012
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
F16K3/12; G21D1/00
Domestic Patent References:
| JP2003048076A | 2003-02-18 | |||
| JPS5015122A | 1975-02-18 | |||
| JP2006017237A | 2006-01-19 | |||
| JP2011058536A | 2011-03-24 | |||
| JP2005290529A | 2005-10-20 | |||
| JP2003048076A | 2003-02-18 | |||
| JPS5015122A | 1975-02-18 |
Attorney, Agent or Firm:
Fujiwara Yasutaka
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