Online monitoring method for metering performance of diaphragm gas meter

Abstract

The invention discloses an online monitoring method for the metering performance of a diaphragm gas meter. The online monitoring method comprises specific working steps of the gas meter and a pressuresensor at the gas conveying end, and an analysis step; and the pressure sensor is fixedly mounted at the gas conveying end of the gas meter. The specific working steps include the following steps that, according to the internal structure and the principle of the diaphragm gas meter, when the pressure fluctuation in the period is ignored, a stable pulsation phenomenon exists in gas flow of gas conveying. The method relates to the technical field of gas metering and monitoring. The online monitoring method for the metering performance of the diaphragm gas meter can realize online monitoring ofthe metering performance of the diaphragm gas meter, and achieves the purpose of performing dynamic monitoring on the metering performance and the equipment performance of the diaphragm gas meter; meanwhile, the pipeline pressure fluctuation is monitored and analyzed, so that the centralized reading and intelligentization of the diaphragm gas meter are indirectly realized; and therefore, the method has great significance for improvement of a stock table.

Description

technical field [0001] The invention relates to the technical field of gas measurement and monitoring, in particular to an online monitoring method for the measurement performance of a membrane gas meter. Background technique [0002] At present, there are two main types of gas meters on the market, one is the traditional mechanical membrane gas meter; the other is the prepaid membrane gas meter. Each time a unit is used, the count of the roller is increased by one, and finally the gas volume measurement record is realized. The advantages of mechanical gas meters are reliable measurement and stable quality. It takes a lot of money and manpower. When the flowing gas passes through the gas meter, it is blocked by the friction of the pipeline and the mechanism. The internal gas will generate a pressure difference between the inlet and outlet of the gas meter. Through this pressure difference, the membrane gas meter will be driven The diaphragm moves in the metering chamber and...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an online monitoring method for the metering performance of the membrane gas meter, which solves the problem that the online monitoring of the metering performance of the membrane gas meter cannot be realized, and the measurement performance and equipment performance of the membrane gas meter cannot be achieved. The purpose of dynamic monitoring

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