VALVE ASSEMBLY IN GAS STORAGE TANK Russian patent published in 2009 - IPC F17C13/04 

FIELD: motors and pumps.

SUBSTANCE: valve assembly installed on the gas storage tank includes inlet channel for tank filling up with gas and outlet channel for gas discharge, inlet valve which is mounted on the inlet channel and blocks the above channel. The valve assembly also consists of an outlet valve, which is mounted on the outlet channel and blocks this channel and a connecting channel, which connects discharging side of outlet channel with the discharging side of inlet channel. There is also an isolation valve in the connecting channel. When shutoff mechanism opens connecting channel, gas is supplied to inlet channel as reversed flow and flows into the outlet channel through connecting channel. The other version of this invention provides for a valve assembly containing the first gas channel ensuring communication of outer and inner spaces of gas storage tank and being different to the outlet channel. The first valve is installed on the first gas channel and blocks it. The connecting channel connects outlet channel section from the outside of gas storage tank if it is viewed from the outlet valve side, with the first gas channel section in gas storage tank, if it is viewed from the first valve. When shutoff mechanism opens connecting channel, gas is supplied through the first gas channel, connecting channel and outlet channels in the specified order.

EFFECT: gas discharge under conditions of outlet valve failure.

27 cl, 6 dwg