LOCKING AND REGULATING DEVICE Russian patent published in 2005 - IPC

FIELD: pipeline fittings, particularly shutoff devices with blocking members sliding long seat surface between inlet and outlet channels and with rotary blocking member, used for gas flow regulation and emergency pipeline closing in the case of pressure increase/decrease.

SUBSTANCE: locking and regulating device comprises housing with through channel, seat, flat gate with sealing surfaces and orifices connected with drive by rod, rotary blocking member made as flap arranged on the flat gate and connected to fixing mechanism. The device is also provided with sensing member. The sensing member is arranged on the body in parallel to drive and is made as spring-loaded rod with extension made on rod end. Fixing mechanism is created as two rests. One rest is installed on the flap and extends transversely to it. Groove is made in rod extension transversal to through channel. Short arm of another rest connected to the rod is arranged in the groove, wherein above rest is rotary supported by pin. Long arm of above rest is installed so that it may cooperate with rest installed on the flap within the range of flat gate displacement.

EFFECT: simplified structure and increased operational reliability due to provision of rigid kinematical connection between sensing member rod and rest.

2 dwg