DEVICE SHUTOFF-STARTING Russian patent published in 2019 - IPC F16K31/12 A62C37/00 

FIELD: shut-off and starting devices.

SUBSTANCE: invention relates to shut-off and start-up devices with controlled valves, valves and gate valves. In the device shut-off and starting, comprising a housing with two internal mutually crossing cylindrical channels, one of which – outlet – is intended for interaction with the main line of supply of gaseous fire-extinguishing substance to the protected room, and second is provided with cover and spring-loaded relative to cover bolt to form control chamber between cover and gate and inlet channel intended for interaction with source of gaseous fire-extinguishing substance. At that, the gate is installed with the possibility of axial movement with adjustment of the gas connection between the inlet and outlet channels. Cover is equipped with a hole with a shut-off and start-up valve installed in it intended for controlled pressure release in the control chamber, and the gate is equipped with bypass throttle intended for pressure equalizing between the inlet channel and the control chamber. Hole in the cover is made in the form of a two-stage channel so that the diameter of the first stage is greater than the diameter of the second stage located on the side of the control chamber. Valve is made in form of rod arranged with clearance and possibility of axial movement in second stage of cover channel, provided with thrust flange arranged in control chamber and a radial groove in the zone of transition of the rod into the flange with an annular radial sealing gasket arranged in the groove, which is installed with possibility of interaction with the cover with overlapping of the gas communication between the control chamber and the second stage of the channel, and on the other side – thrust element locked on it and located in the first stage of the channel and made with possibility of unobstructed gas communication between the first and the second stages of the channel.

EFFECT: increased productivity.

1 cl, 4 dwg, 1 tbl