Research on Diagnosis of Faulty Working Turbine Gas Flowmeter

The construction of smart gas has been widely carried out in China. Many researches on smart gas are focused on the fault diagnosis research of pressure regulator and pipeline, and the diagnosis of faulty metering instrument is rarely studied. Normally, the fault of metering instrument will not directly affect the pressure regulation and pipeline, but some functions in smart pipeline dispatching and smart pressure regulation will based on the data measured by metering instrument. Facing a large number of turbine flowmeter fault diagnosis work, on the one hand, enterprises take professional personnel on-site inspection in fault diagnosis, on the other hand, they diagnose the laws of gas usage curve [16] [17]. On the on-site inspection fault diagnosis the accuracy is high, while the timeliness of fault detection is poor. The timeliness of diagnose the laws of gas usage curve is good, while the diagnosis accuracy is low. After research on turbine gas flow meters, it is found that there is a unique functional relationship between the pressure loss and gas usage. In view of the current situation, the data of flow and pressure loss are analyzed in the computer, which can timely and effectively diagnose the fault of turbine gas flow meter. The correctness of the argument is verified by experiments in this paper. Meanwhile turbine gas flow meter is widely used in custody transfer of town gas. So it requires us to spend more energy on the research of working turbine gas flow meter fault diagnosis.