STARTUP-ISOLATING ELECTRIC PNEUMATIC VALVE OF PERMANENT LOW PRESSURE WITH SAFETY DEVICE Russian patent published in 2010 - IPC G05D16/08 

FIELD: machine building.

SUBSTANCE: startup-isolating electric pneumatic valve of permanent low pressure with safety device comprises cavity of high pressure with gas supply channel and cylindrical chamber separated from it by fixed seat and isolating gate with the main movable element, which is equipped with pusher interacting with isolating gate and creating a low pressure cavity with drain channel in chamber at the pusher side, and at the opposite side there is an auxiliary cavity communicated with atmosphere connected by channel in the main movable element and pusher with movable seat arranged in pusher end, element of adjustment for specified low pressure, mechanical main spring arranged in auxiliary cavity and control electromagnet valve with inlet seat communicated with gas supply channel, control element driven by electromagnet, and outlet seat communicated with low pressure cavity. Isolating gate is connected to additional movable element, which is arranged in chamber of additionally introduced gas engine and creates a working cavity with it at the side opposite to isolating gate, communicated with control valve cavity, with auxiliary spring installed in it, and at the side of isolating gate - cavity communicated with atmosphere.

EFFECT: increased efficiency of gas supply systems due to expansion of startup-isolating electric pneumatic valve of permanent low pressure functionality and provision of safety device function both in open and closed conditions set in case of multiple connections and disconnections.

1 dwg