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1. 发明专利

JPH0619554A VALVE DEVICE 失效
公开(公告)号：JPH0619554A
公开(公告)日：1994-01-28
申请号：JP33687691
申请日：1991-12-19
申请人： SHIMIZU CONSTRUCTION CO LTD , MOTOYAMA ENG WORKS
发明人： IGARASHI SEISHIRO , TACHIBANA MASAYA , SUZUKI JUN , ISO KATSUMA
IPC分类号： F16K31/12 , F16K37/00 , G05D7/03 , G05D16/06
摘要： PURPOSE:To obtain the valve device which has a flow rate detecting mechanism in addition to both functions for pressure control and flow rate control and requires a small necessary space, and is low in cost and easily assembled. CONSTITUTION:This valve device is equipped with a driving part 2 which responds to the pressure of fluid flowing in piping and a valve body 9 which is operated by the driving part to adjust the opening extent of a valve hole 8 and further provided with the flow rate detecting mechanism 4 equipped with detection parts 21-24 which detect the opening extent of the valve, primary pressure, secondary pressure. and fluid temperature and a signal processing part 25 which calculates the flow rate of the fluid associatively with the detection. This device is equipped with a working pressure control mechanisms 3 which puts the valve body in operation by controlling pressure applied to the driving part according to the flow rate calculated by the flow rate detecting mechanism 4. Thus, the device is equipped with the flow rate detecting mechanism composed of the respective detection parts for the valve opening extent, primary pressure, secondary pressure, and fluid temperature and the signal processing part calculating the fluid flow rate, so an independent flow rate detecting means is not necessary.

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