EXHAUST COVER Russian patent published in 2017 - IPC B63B19/14 F16K17/02 

FIELD: construction.

SUBSTANCE: exhaust cover consists of components that are installed both outside the room and inside it. The upper part of the exhaust cover, installed outside the room, consists of a coaming, a cloth with a bracket, a spring loop, an end, a shoe, a final switch, an external pipeline with a union and a lock for manual opening. The lower part of the exhaust cover consists of an automatic device and an internal pipeline. When the air pressure in the room is increased above atmospheric pressure by an amount from 6 to 10 kPa, an automatic device is triggered and thereby releases the bracket fixed to the web. When the clamp is released, the spring loop is triggered, under which the web is opened and fixed by the stop in the vertical position, the signal from the final switch goes to the alarm system to open the exhaust cover.

EFFECT: improving the performance of the manhole cover, providing increased safety of special impermeable circuits and hermetic spaces of the vessel.

5 dwg