EP 0419946 B1 19940316 - Valve motor.
Title (en)
Valve motor.
Title (de)
Stellantrieb.
Title (fr)
Moteur pour une vanne.
Publication
Application
Priority
CH 351889 A 19890928
Abstract (en)
[origin: JPH03121203A] PURPOSE: To enhance the controllability by cooperating an adjusting orifice which is associated with a main piston in an adjusting drive device through the intermediary of a link device, and which is provided in a discharge orifice, with a front control piston device to be feed-back controlled in response to a distance signal. CONSTITUTION: In an adjusting drive device 1 for operating a regulator valve 2 for opening and closing a high temperature steam conduit 2a in a turbine installation, an oil supply conduit 40 is connected to a lower chamber 5 in a main piston 4 which is coupled to the regulator valve 2 through the intermediary of a rod 3. The conduit 40 is connected thereto with a branch conduit 42 provided therein with an adjusting orifice 14 through which the branch conduit 42 communicates with a discharge device. The adjusting orifice 14 is associated with the motion of a main piston 4 through a link device 15, and has a closing member 16 linked to the piston 17 in the front control piston device 18. In this case, the front control piston device 18 feed-back controls a directional control valve 33 by an electronic control device 31 in accordance with an output of a distance detector 21 for detecting a position of a piston 17.
IPC 1-7
IPC 8 full level
F01D 17/10 (2006.01); F01D 17/26 (2006.01)
CPC (source: EP US)
F01D 17/26 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0419946 A1 19910403; EP 0419946 B1 19940316; AT E103035 T1 19940415; CH 678968 A5 19911129; DE 59005002 D1 19940421; ES 2053042 T3 19940716; JP 2974749 B2 19991110; JP H03121203 A 19910523; US 5193779 A 19930316
DOCDB simple family (application)
EP 90117575 A 19900912; AT 90117575 T 19900912; CH 351889 A 19890928; DE 59005002 T 19900912; ES 90117575 T 19900912; JP 25761690 A 19900928; US 58622790 A 19900921