Throttle Produces Frozen Blocking Effect On The Gas Pipeline Network

Under the past two years Beijing city pipeline network conditions, process gas useInlocal influence user ’s natural gas pipeline transportation of natural gas hydrate is a majorthreat to the safe operation of the transmission factor of the gas pipeline, the ability to hydrateand freeze eventInfluence Network gas component (including water content), pressure,temperature conditions.When stream in the pipeline, because the local resistance, such asnecking, and the control valve, if the pressure significantly decreased, a phenomenon calledthrottling. Before and after the actual gas temperature will change the throttle. The gastemperature in the throttling process is called Joule-Thomson effect (called the Joule-Thomson effect) Most throttling process gas at room temperature, lower temperature afterthe throttling element, the cooling effect of the temperature called Joule-Thomson effect. HP’s through four stations, transformer B system in the import and export of pressure andtemperature on imports and high-voltage output, a simple average, the gas pressure drop canbe approximated as1MPa, clogged air temperature5.45degrees celsius.Eliminating SinceBeijing city gas pipeline network belongs to downstream users, natural gas dehydration andthermo-mechanical inhibitors and increased fluid hotline unrealistic. Therefore, in Beijingnatural gas pipeline network, the basic use of electric heating handle. Under the currentsituation, it basically solved the problem, effect.