DEVICE FOR REDUCTION OF GAS PRESSURE Russian patent published in 2004 - IPC

FIELD: gas industry, applicable for reduction of gas pressure to the level required for the user. SUBSTANCE: compressed natural gas with initial parameters is supplied through a pipe-line to the device for reduction of gas pressure, through gas supply branch pipe 1, the device for reduction of gas pressure is enclosed in body 2 and has gas discharge branch pipe 3 after the reduction of pressure. For prevention of overcooling of the structural members of the device for reduction of gas pressure occurring in the known valve device, when reduction of pressure is accompanied by a temperature drop the device for reduction of gas pressure is provided with vortex tube 14, in which the reduction of gas pressure occurs in the process of its temperature separation into hot (5) and cold (6) flows with a subsequent mixing of them in body 2 connected to reduced gas pressure discharge branch pipe 3. Thus, the gas pressure gets reduced, and the flow temperature remains constant and no overcooling of the members of the device occurs. Reduced pressure natural gas comes out of the device. EFFECT: facilitated procedure. 2 dwg