EP 0462126 B1 19931110 - REGULATING DRIVE FOR SAFETY AND CONTROL VALVES.
Title (en)
REGULATING DRIVE FOR SAFETY AND CONTROL VALVES.
Title (de)
STELLANTRIEB FÜR SICHERHEITS- UND REGELVENTILE.
Title (fr)
SERVOMOTEUR POUR SOUPAPES DE SURETE ET DE REGLAGE.
Publication
Application
Priority
DE 3907289 A 19890307
Abstract (en)
[origin: WO9010783A1] In a regulating drive for safety and control valves in safety stations for metering energy flows in the form of gases, vapours or water, especially in thermal or industrial power stations, the driving force for the safety adjustment of the choke unit (3) is derived from the pressure difference in the working medium acting on the choke unit. To this end, the safety valve worm drive is not self-limiting. Instead of the high-speed motor, a high-speed device (SG) is used which is coupled to the planetary gear stage (11) of the regulating drive via a non-self-limiting drive (9) and has a shaft (9a) normally braked by a releasable braking device (10), in which the braking device (10) releases the high-speed device (SG) when the response pressure is reached so that the choke unit (3) may be moved to its rated position, driven by its own medium. In the positive direction of action, the rated position of the choke unit (3) is the open one and in the negative direction, the closed one.
IPC 1-7
IPC 8 full level
F01D 17/10 (2006.01); F01D 17/14 (2006.01); F01D 21/00 (2006.01); F01D 21/16 (2006.01)
CPC (source: EP KR US)
F01D 17/145 (2013.01 - EP US); F01D 21/00 (2013.01 - EP KR US); F01D 21/16 (2013.01 - EP US); Y10T 137/7761 (2015.04 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
WO 9010783 A1 19900920; AU 5169590 A 19901009; AU 631406 B2 19921126; CN 1023148 C 19931215; CN 1048094 A 19901226; DE 3907289 A1 19900913; DE 59003479 D1 19931216; EP 0462126 A1 19911227; EP 0462126 B1 19931110; JP H04503988 A 19920716; KR 920701613 A 19920812; US 5152316 A 19921006
DOCDB simple family (application)
DE 9000160 W 19900306; AU 5169590 A 19900306; CN 90102135 A 19900307; DE 3907289 A 19890307; DE 59003479 T 19900306; EP 90903765 A 19900306; JP 50388490 A 19900306; KR 910701006 A 19910827; US 75704591 A 19910909