Title:
CONTROL VALVE WITH FLOW METER FUNCTION
Document Type and Number:
WIPO Patent Application WO/2014/007047
Kind Code:
A1
Abstract:
In a control valve, which controls a flow of a fluid which passes therethrough by a drive unit (4) operating and a valve (34) opening in a prescribed location on the basis of an operation output signal from a controller (6), surface temperature detection means (30, 32) are respectively disposed which detect a surface temperature of a primary side and a secondary side of the valve (34). Also disposed in the control valve are: an opening-Cv value storage unit which pre-stores a relation between an opening of the valve (34) and a Cv value; a surface temperature-pressure storage unit which pre-stores a relation between surface temperature and pressure; and a computation unit which derives a Cv value from the stored relation on the basis of the valve opening corresponding to the operation output signal which the controller outputs, derives a pressure value from the stored relation on the basis of the surface temperature which the surface temperature detection means (30, 32) have detected, and computes a flow which passes through the valve (34) from the derived Cv value and pressure value.
Inventors:
FUJIKAWA YUICHI (JP)
Application Number:
PCT/JP2013/066389
Publication Date:
January 09, 2014
Filing Date:
June 13, 2013
Export Citation:
Assignee:
TLV CO LTD (JP)
International Classes:
G05D7/06; F16K37/00
Foreign References:
| JPS6197721U | 1986-06-23 | |||
| JP2011069335A | 2011-04-07 | |||
| JP2005516192A | 2005-06-02 | |||
| JPH08286766A | 1996-11-01 | |||
| JPH04151403A | 1992-05-25 | |||
| JP2005267572A | 2005-09-29 | |||
| JPS63275876A | 1988-11-14 | |||
| JP2003503786A | 2003-01-28 | |||
| JPH04181082A | 1992-06-29 |
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