A standard sampling device and sampling method for natural gas flow rate

By designing a natural gas flow standard sampling device with a gas sampling unit, a time synchronization control unit, and a gas path opening and closing control unit, the problem of asynchronous gas collection and analysis cycles was solved, and the accuracy of gas component analysis and the precision of detection results were achieved.

CN116952335BActive Publication Date: 2026-06-30PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PETROCHINA CO LTD
Filing Date
2022-04-12
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing mass-time method natural gas flow standard devices are difficult to synchronize with the analysis cycle of online chromatographs during gas collection, resulting in inaccurate component analysis and affecting detection accuracy.

Method used

Design a natural gas flow standard sampling device, including a gas sampling unit, a time synchronization control unit, and a gas path opening and closing control unit. The time synchronization control unit monitors the device status and controls the opening and closing of the gas path to ensure accurate synchronization between gas sampling and gas collection. The gas path opening and closing control unit switches the state of the solenoid valve to control the gas flow direction and realize gas component analysis.

Benefits of technology

It improves the detection accuracy of natural gas flow standard devices, ensures the synchronization of gas sampling and gas collection, and enhances the accuracy of detection results.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a natural gas flow standard sampling device and method. The device includes a gas sampling unit, a time synchronization control unit, and a gas path opening and closing control unit. The gas sampling unit stores the natural gas to be sampled and analyzed, and sends the stored natural gas to a gas component analyzer for component analysis. The time synchronization control unit monitors the calibration status of the natural gas flow standard device and synchronously controls the start and stop status of each device in the gas path opening and closing control unit. The gas path opening and closing control unit receives synchronization signals from the time synchronization control unit, switches the opening and closing status of the solenoid valve, and controls the flow direction of natural gas in the gas sampling unit. This invention ensures precise synchronization between gas sampling by the gas sampler and gas collection by the natural gas flow standard device, improving the accuracy of the natural gas flow standard device detection.
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