Safety cut-off type ic card intelligent mass flow gas meter and its management system

Abstract

The invention discloses a safety cut-off type IC card intelligent mass flow gas meter and its management system, belonging to a gas metering device. The gas meter includes a microcomputer controller, a microelectromechanical metering unit, a valve control circuit and a communication module. The micro-electromechanical metering unit is connected to the microcomputer controller through the signal acquisition unit and the signal processing unit in turn; the microcomputer controller is connected to the shut-off valve through the valve control circuit; the microcomputer controller is also connected to the communication module; the present invention uses The principle of mass flow measurement, without mechanical transmission parts, avoids the measurement problems caused by mechanical aging, and ensures the measurement accuracy; and achieves the temperature correction function by mass flow measurement, without external correction devices for temperature and pressure compensation, and the entire meter is small in size , high measurement accuracy and high reliability.

Description

technical field [0001] The invention relates to a gas metering device, more specifically, the invention mainly relates to a safety cut-off IC card intelligent mass flow gas meter and its management system. Background technique [0002] With the rapid development of clean and efficient energy such as natural gas, more and more urban residents use natural gas, and gas measuring instruments are necessary equipment for the measurement and settlement of natural gas consumption. At present, domestic gas metering base meters are mainly mechanical gas meters, which adopt the principle of volumetric metering and measure the volume flow rate of gas through a flexible diaphragm metering chamber. The flexible diaphragm is easily affected by moisture and dust in natural gas. The mechanical gas meter based on the principle of mechanical propulsion will inevitably experience mechanical aging during long-term use, which will lead to poor measurement accuracy and poor reliability. High and ...

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to address the above-mentioned deficiencies, to provide a safety cut-off type IC card intelligent mass flow gas meter and its management system, in order to solve the large error of the metering base meter of the volumetric metering principle in the prior art, and to install The temperature and volume correction device increases the production cost, the basic meter of ultrasonic principle measurement is not suitable for the mixed gas source, and the gas supply cannot be safely cut off and other technical problems

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