Pneumatic stabiliser to insulate instruments against vibration - has control element with several diaphragms and two chamber connected mutually via throttling device

摘要

The stabiliser is used for control instruments to reduce control vibrations. The unit has a control body with control diaphragm and an additional diaphragm on top forming two chambers (8, 9). The two diaphragms are connected by a stem (2). The top chamber (9) is connected to the input control pressure (Pe) and at the same time to the chamber (8) via a throttle (10). The control body (1) has a third diaphragm (11) with the chamber created by the diaphragms vented to atmosphere. The unit housing (5) has a valve seat (13) on its underside working together with valve body (14) as an outlet valve. The valve body is connected with a second valve body by a stem working together with the valve seat (16) in the housing of the amplifier to inlet air into the chamber (17) from which the output pressure (Pa) is obtained.