| 摘要 |
gas supply to individual users, industrial enterprises, farms, and remote populated areas. SUBSTANCE: gas-distribution station is designed to reduce natural gas pressure to desired level for delivering it to users including those supplied with gas over lines branched off main and industrial gas lines. Pressure- reducing unit of station is made in the form of Rank-Hilsh adjustable three-flow vortex tube whose high-pressure gas inlet is connected to purification unit outlet and hot-flow outlet, to recuperative heat-transfer apparatus mounted in process unit and used to heat up liquid heat- carrying agent naturally circulating in heating system of monitoring and control unit and in accumulating and discharging header for entrapped impurities of purification unit. Vortex-tube cold flow outlet is connected to finned tube located outdoors beyond process unit wall so that outlets of hot flow from heat-transfer apparatus and of cold flow from finned tube are combined by recovery ejector to form single mixed flow whose outlet is connected downstream of gas odorizing and metering units to outlet gas line. Condensate outlet from vortex tube is connected through steam trap to external tank. EFFECT: enhanced reliability due to simplified design and recovery of hot flow energy; reduced consumption of natural gas; improved environmental friendliness. 1 dwg
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