液位计在煤层气分离器上的应用及认识

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英文篇名：The Application and Understanding of Liquid Level Gauge in Coalbed Methane Separator 作者：霍洪涛 ; 张易达 ; 张景辉 ; 彭宣玮 ; 赵武鹏 ; 徐敏 英文作者：HUO Hongtao;ZHANG Yida;ZHANG Jinghui;PENG Xuanwei;ZHAO Wupeng;XU Min;CBM Exploration and Development Branch,PetroChina Huabei Oilfield Company;Institute of Geological Surveying and Mapping of Hebei Province; 关键词：煤层气 ; 液位计 ; 计量误差 ; 安全隐患 ; 集输 英文关键词：Coalbed methane;;liquid level gauge;;measurement error;;security risks;;gathering 中文刊名：ZGMC 英文刊名：China Coalbed Methane 机构：中石油华北油田山西煤层气分公司;河北省地质测绘院; 出版日期：2018-12-15 出版单位：中国煤层气 年：2018 期：v.15 语种：中文; 页：ZGMC201806004 页数：4 CN：06 ISSN：11-5011/TD 分类号：16-19

摘要

从液位计出现"假液位"的原因入手,对该问题进行详细的分析,提出在气液分离器下端与液位计连通的部位加装前置过滤装置的新思路。当食盐水过滤液密度大于气液分离器内混合液(水、乳化油、煤粉)密度时,食盐水过滤液会沉入装置的下部并通过液位计连接管进入液位计内,从而隔绝了液位计与气液分离器内混合液的接触,利用U型管原理就可以等量准确读出被测介质的液位。该装置在现场应用以后效果显著,分离器液位计计量误差从措施前40%下降为2%。
        For the problem of "false liquid level"in the level gauge,we conducted a detailed analysis and propose a new idea of adding a pre-filter device between the lower end of the gas-liquid separator and the connection of the level gauge. When the brine filter density is greater than the density of the mixed liquid( water,emulsified oil,coal powder) in the gas-liquid separator,the brine filter will sink into the lower part of the unit and enter the level gauge through the level gauge connection tube. Therefore,the level gauge and the liquid mixture in the gas-liquid separator are isolated. We can use the U-tube principle to accurately measure the liquid level of the measured medium. The device is effective through field application. as a result,The metering error of the separator level gauge decreased from 40% to 2%.

引文

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