一种LNG加液机计量误差修正方法和系统
By acquiring the temperature, pressure, and pre-cooling status of the LNG dispenser, and using a correction coefficient table for adaptive metering correction, combined with a pneumatic ball valve to prevent internal leakage, the problem of large metering errors in the LNG dispenser under different operating conditions has been solved, thus improving metering accuracy and data accuracy.
CN118499680BActive Publication Date: 2026-07-17HOPE CLEAN ENERGY (GRP) CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HOPE CLEAN ENERGY (GRP) CO LTD
- Filing Date
- 2024-06-03
- Publication Date
- 2026-07-17
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Figure CN118499680B_ABST
Abstract
本发明公开了一种LNG加液机计量误差修正方法和系统，涉及LNG加液机领域，用以提高LNG加液机计量精度。本发明通过获取加液软管内的温度、储罐压力、待机等待时间以及大循环预冷状态标记，由大循环预冷状态标记确定低气化量标注阈值，在温度、储罐压力且等待时间均满足相应状态下的阈值时，查表获取修正系数，对计量修正体积进行修正，计算出管内剩余液体质量，进而从液相流量计计数的加液质量中扣除该剩余液体质量，最后再利用规定的计量精度修正系统值对质量进行修正。本发明考虑了不同工况对计量误差的影响，提高了计量的准确性；且增设气动球阀可以预警LNG加液枪的内漏。
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