Networked on-line inspection method of supersonic gas flowmeter

Abstract

The invention relates to a networked on-line inspection method of a supersonic gas flowmeter. The basic realization mode of the networked on-line inspection method is that the inspected supersonic flowmeter is connected into a metering network platform, basic information of the inspected supersonic flowmeter is established in a database, data collected by the inspected supersonic flowmeter, and a temperature sensor, a pressure sensor and a chromatographic analyzer matched with the inspected supersonic flowmeter are read through the network platform, the state of the inspected supersonic flowmeter is checked, sound velocity inspection is conducted according to a theoretical sound velocity obtained through calculation, and a field detection record of the supersonic flowmeter is finally and automatically generated by utilizing the network platform, so as to judge whether the sound velocity value deviation satisfies a specified requirement or not and whether the ratio of each soundtrack flow velocity value to the average axial sound velocity value passing through the flowmeter is within a reasonable range or not. The networked on-line inspection method of the supersonic gas flowmeter has the advantages that on-line inspection of the supersonic flowmeter is realized through the network platform, the metering does not need to be interrupted, the inspection cost is low, the informatization degree is high and the accuracy of measured data of the flowmeter is guaranteed.

Description

technical field [0001] The invention relates to an on-line inspection method, in particular to a networked on-line inspection method of a gas ultrasonic flowmeter. Background technique [0002] At present, my country's energy measurement and monitoring is carried out in a decentralized manner, and the degree of informatization is not high. Trade ports, along the West-East Gas Pipeline and large-flow trade measurement stations have begun to use ultrasonic flowmeters in large quantities to obtain measurement data. Since the AGA No. 9 report "Measurement of Natural Gas by Multi-channel Ultrasonic Flowmeters" was presented by the American Gas Association in 1998, the application of multi-channel ultrasonic flowmeters to natural gas transfer measurement has been increasing. Since the natural gas pipeline network and metering stations are distributed all over the province, how to ensure the accuracy of measurement data, how to find problems in time, and carry out regular inspectio...

AI Technical Summary

Problems solved by technology

Since the standard flowmeter comparison method requires on-site installation of standard devices, the inspection efficiency is not high, and there are potential safety hazards, so all countries have turned their attention to the more convenient and fast networked online inspection method based on sound velocity comparison.

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