Analysis of the current situation of pressure pipelines in liquefied petroleum gas supply stations
Li Jincheng1, Cui Aide2
1. The IT Electronics Eleventh Design & Research Institute Scientific and Technological Engineering Corporation Ltd., Hebei Branch, Shijiazhuang 050000, China; 2. Xinfa Pharmaceutical Corporation Ltd., Dongying 257500, China
A large number of liquefied gas stations in China are replacing the pressure pipelines with smaller diameters to avoid pressure pipeline supervision. In order to ensure production safety and provide reference for functional department supervision and management, through the comparison and simulation calculation of domestic regulatory standards, it was analyzed and summarized that simply reducing pipeline specifications will exceed the maximum flow rate allowed by the regulations, leading to the gasification of liquefied petroleum gas. The research conclusion is that without replacing the existing large displacement compressor and hydrocarbon pump in the station, changing the DN50 pipeline to a DN40 pipeline will cause the pipeline system pressure of liquefied petroleum gas to approach its saturated vapor pressure before entering the hydrocarbon pump, and the hydrocarbon pump will experience cavitation.
李金成1，崔爱德2. 液化石油气供应站压力管道现状分析[J]. 煤炭与化工, 2026, 49(5): 156-160.
Li Jincheng1, Cui Aide2. Analysis of the current situation of pressure pipelines in liquefied petroleum gas supply stations. CCI, 2026, 49(5): 156-160.
