Electronically controlled regulating valve

Abstract

Abstract An electronically controlled regulating valve, in particular for cryo-engineering, has a main tube (2) which has two end pieces (4, 6), which can be constructed as inlet and outlet, and an elastic middle piece (8), to which pressure can be applied from outside to change its shape and thus the flow cross-section. The main tube is surrounded in the region of the elastic middle piece by a perforated support tube (10), which is surrounded in turn at a distance by an enclosing tube (12), so that there is formed between the middle piece (8) and enclosing tube (12) an enclosing space (16) which is tightly sealed with respect to the environment. A filling medium (18) in the saturated state is located in said enclosing space. Said filling medium can be heated with the aid of a heating element in order to generate a desired vapour pressure and a change in the shape of the elastic middle piece. The change in shape of the elastic middle piece is detected with the aid of an inductive or capacitive sensor (25). The measurement signals of the sensor are evaluated in order to control or regulate the valve. <IMAGE>

Inventors

• 👤 Zbigniew Ryszard Dr. Huelle

Bibliographic Details