Application of regulating propane control valve in the Chengdu Chongqing pipeline in
2015-03-03 by bridgeqs
Lan Chengyu oil pipeline is a long distance multiple sequential oil transporting pipeline. The pipeline is the starting point for the North Beach of Lanzhou oil depot, passing through the Loess Plateau, Qinling Mountains mountainous area, Sichuan basin, complex terrain, pipeline 2455 meters high above sea level, the lowest point for the elevation of 200 meters, 2255 meters for the gap, dynamic pressure and static pressure is very great, in order to ensure the pipeline hydraulic condition is stable, the pressure reducing
Propane Control Valve is arranged in the Longxi Railway Station, station and Cheng County GuangYuan Railway Station, to control the propane control valve upstream pressure, ensure the high negative pressure, when the shutdown of the downstream piping overpressure. Lanzhou's first station and Chongqing terminal station in order to adjust the import and station pressure, respectively, in the import and station installed Gas Control Valve(electrohydraulic regulating propane control valve). In order to protect the sub transmission feeder pressure is not high, in the sub transmission station sub transmission feeder inlet control propane control valve, also set up a relief propane control valve (electro-hydraulic linkage transmission control propane control valve). In the pipeline operation, through the pressure reducing propane control valve control propane control valve back pressure, the pressure reducing station upstream high pressure saturated steam pressure is greater than the oil, ensure the pipeline to achieve full pipe flow, reduce and prevent the occurrence of mixed oil quantity in oil vaporization. Reduce the pressure reducing station downstream pipeline dynamic pressure, prevent downstream pressure high; reduce the pipeline wall thickness, save steel consumption. Pipeline shutdown, the pressure reducing patio heater control valve is fully closed, the truncated upstream static pressure, static pressure is too large to avoid downstream pipeline damage.