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DOI: 10.5445/IR/1000075583

Valve actuated by electric stepper motor-based linear drive

Holdener, Fridolin; Hegglin, Andres

Abstract:
Actual cryogenic valves are mostly driven by pneumatic actuators. PLC generated electrical analogue or digital signals are guiding control valves via an electro-pneumatic positioner and shut-off valves by switching an electromagnetic pneumatic pilot valve. However, a pneumatic air supply system is complicated and the complexity increases with the number of valves and the geographical expansion. Furthermore, a pneumatic air supply system has a very low energy efficiency, needs continuous servicing and requires space. Thus, operation and capital costs for an electro-pneumatic system to actuate valves are high. There are new developments in in the refrigeration, natural gas and energy industries which use pneumatic free electric driven control and shut-off valves. Based on the positive service experiences, innovative cryogenic and warm valves, actuated by an electric stepper motor-based linear actuator were developed. The development includes also the electronic control module with specific algorithms for the full valve functionality. Valve safety function fail open or fail closed as well as many further control advantages are availabl ... mehr


Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Publikationstyp Poster
Jahr 2017
Sprache Englisch
Identifikator URN: urn:nbn:de:swb:90-755839
KITopen ID: 1000075583
HGF-Programm 37.06.02; LK 01
Erschienen in 2nd International Workshop on Cooling Systems for HTS Applications (IWC-HTS), Karlsruhe, Germany, 13th - 15th September 2017
Bemerkung zur Veröffentlichung Author affiliation: Shirokuma GmbH, Switzerland
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