PRECAUTIONARY-SHUTTING OFF GAS DEVICE Russian patent published in 2008 - IPC F16K17/06 G05D16/06 

FIELD: machine manufacture.

SUBSTANCE: invention relates to the field of protective devices for gas and is meant for automatic turn off of gas supply in case of an increase or decrease of the control pressure. Device contains a case, lid, adjusting spring and regulating components for the settings of the set-up parameters. The first plunger pin is longitudinally prolate form set in the first plug. It is mounted on the casing flange. On the body is placed a shut-off valve and a sleeve is attached. A membrane is attached between the case and the lid. The leverage mechanism consists of the second plug and a lever. The second plug is fixed on the case perpendicular to the first rod and has a channel in the lower part. Through this pipe the second rod presses to the face of the sleeve a ball. Levers are fixed on the second rod. The third sleeve is mounted on the first sleeve in line with it forming between them a clearing space for the exiting of air. The clearing space is connected through the hole to the flange of the case with the atmosphere. On the first rod there is a ring-shaped protrusion. It divides the internal space of the bushings into two air-tight separate cavities: till the ring-shaped protrusion for joining it with the atmosphere and after it for the outlet to the gas pressure regulator. Cross-sectional area of the rod is equal to the cross-sectional area of the ring-shaped protrusion. The first rod has two holes. First hole - is non-opening located along the rod. The second - radial through attached to the first hole and located after the ring-shaped protrusion.

EFFECT: improving accuracy of the operation of the device.

3 dwg