作　　者： ;

机构地区： 新奥能源控股有限公司

出　　处： 《天然气工业》 2011年第8期94-95,138,共2页

摘　　要： 归属于不同业主的两个区域天然气管网联通时,解决贸易结算的"双向计量"是一道难题,仪表量程下限以及"微流动"工况决定了单从计量仪表本身入手难以很好解决问题,有必要另辟蹊径。为此,开发出了一种简便的双向计量系统,即采用2套常规的计量回路,通过设置相应的自动控制组件、电动阀或手动控制阀,对计量系统进行自动控制或手动控制,实现了2个独立天然气管网的互联互通,在解决管网间双向联通、双向计量问题的同时,又避免了微流量或低流量状态下计量仪表精度失准的问题。该计量系统技术可靠、工艺简单、投资少,是一种很有应用前景的计量模式。 It is quite difficult in bi-directional measuring when two gas pipeline networks are connected each other, not to mention that both are organized by two different sides. Flow meters can not be exclusively relied on due to their lower limits, especially under the micro flow state. In view of this, an easily operated bi-directional measuring system is developed with two general flow circuits. By use of the corresponding automatic control valve group, composing of electric or hand braking valves, the flow measuring system can be controlled automatically or manually. In such a way, the two independent pipeline networks are successfully connected with each other and the bi-directional flow measurement can be easily performed; more than that, the problems like accuracy loss of meters can be avoided under micro or low flow state. This cheap bi-directional flow measuring system is reliable and easy to handle, and will be worthwhile in wide application in the future market.

关 键 词： 天然气管网 联网 双向计量 计量仪表 低流量 低量程限制 计量精度 计量回路

领　　域： [石油与天然气工程]