Combustion gas meter pulsating flow error double-standard detection system and method

Abstract

The invention provides a combustion gas meter pulsating flow error double-standard detection system and method and relates to the technical field of combustion gas meter detection. The combustion gas meter pulsating flow error double-standard detection system comprises a to-be-detected combustion gas meter. The to-be-detected combustion gas meter is orderly connected with a positive displacement flow meter, a venture nozzle, a solenoid valve set and a vacuum pump, wherein the solenoid valve set is connected with a time controller; solenoid valve on-off time and frequency can be set by the time controller; a comparison is made between the to-be-detected combustion gas meter and a volume value of the positive displacement flow meter, so one-time pulsating flow error of the to-be-detected combustion gas meter can be calculated; and the average error of the to-be-detected combustion gas meter can be achieved according to the average value of several one-time values. A technical problem of difficulty for electronic combustion gas meter pulsating flow error detection by a present detection apparatus can be solved. The beneficial effects are that with a combination of two standards of instantaneous volume flow rate standard and an accumulated volume flow rate standard, pulsating flow error of the combustion gas meter can be accurately detected; and the combustion gas meter pulsating flow error double-standard detection system is simply and rationally structured and conveniently operated, and brings great convenience to combustion gas meter production control and product acceptance.

Description

technical field [0001] The invention relates to the technical field of gas meter detection, in particular to a gas meter pulsating flow error detection system and detection method. Background technique [0002] With the progress of society, electronic gas meters develop rapidly. At present, relatively mature electronic gas meters such as ultrasonic gas meters and thermal gas meters are gradually popularized and used. The gas flow sampling methods of electronic gas meters and traditional membrane gas meters are very different. Membrane gas meters use diaphragms and mechanical structures for real-time sampling. Electronic gas meters use electronic components to detect flow. Electricity is consumed by electronic components that detect flow. In order to meet the requirements of ultra-low power consumption, the electronic gas meter uses intermittent sampling for the collection of flow signals. In order to verify whether intermittent sampling can meet the requirements of meas...

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Problems solved by technology

[0003] In order to solve the technical problem that the detection device in the prior art is difficult to detect the pulsating flow error of the electronic gas meter, the present invention provides a double-standard detection system and detection method for the pulsating flow error of the gas meter, so as to achieve accurate and reliable detection data and facilitate electronic The purpose of production and acceptance testing of type gas meters

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