A high-precision ultrasonic gas metering device

CN121409349BActive Publication Date: 2026-04-21QIONGLAI ANYUAN GAS DISTRIBUTION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QIONGLAI ANYUAN GAS DISTRIBUTION CO LTD
Filing Date
2025-11-25
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing gas metering devices suffer from reduced metering accuracy in large-diameter pipes due to uneven flow fields, and it is difficult to improve measurement accuracy while ensuring gas supply stability.

Method used

It adopts a parallel structure of main flow pipe and secondary flow pipe, with the main flow pipe being larger than the secondary flow pipe. Combined with the speed regulation mechanism, the intake volume is dynamically adjusted by detecting flow velocity differences to achieve flow velocity balance. The secondary flow pipe is used for high-precision measurement, and the measurement accuracy is ensured by the balancing actuator.

Benefits of technology

While ensuring gas supply stability, it significantly improves metering accuracy, making it particularly suitable for high-flow gas usage scenarios. It reduces metering errors and achieves dual protection of delivery efficiency and metering accuracy.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of gas metering technology, and in particular provides a high-precision ultrasonic gas metering device, comprising a housing, an ultrasonic metering module disposed inside the housing, and an inlet and outlet port on the surface of the housing communicating with the inner cavity of the housing. The ultrasonic metering module includes two cylindrical chambers and a main flow pipe and a secondary flow pipe disposed between the two cylindrical chambers and parallel to each other. The diameter of the main flow pipe is larger than the diameter of the secondary flow pipe, and there is a defined diameter ratio between the main flow pipe and the secondary flow pipe. The ultrasonic metering module also includes a speed regulating mechanism disposed between the main flow pipe and the secondary flow pipe for balancing the flow velocity between them. This invention can balance the stability of gas supply and the accuracy of measurement, and is particularly suitable for ultrasonic metering in industrial and commercial high-flow gas consumption scenarios. Furthermore, it has a simple and reliable structure, facilitating large-scale application.
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Citation Information

Patent Citations

  • Metering channel structure and assembly equipment for NB remote ultrasonic gas meter

    CN119738008B

  • Ultrasonic gas meter

    CN110906995A

  • Multi-channel ultrasonic gas meter

    CN209102162U