��Ȼ���Ļ����Լ����׼��

发热量和互换性是天然气最重要的两项燃烧性质，但我国目前有关天然气的气质标准中均尚未对互换性作出规定。为此，讨论了确定天然气互换性的几种方法，其中包括沃贝指数法、德尔布法、美国天然气协会（Ａ·Ｇ·Ａ）法，以及国内外根据燃烧性质分类天然气的标准化情况，并就我国管输天然气沃贝指数的标准化问题提出了几点看法。

Interchangeability of Natural Gas and Its Standardization

The calorific value and interchangeability are the two most important burning properties, however, the rule can't be worked out yet for the interchangeability in relevant natural gas quality standards in China at present. For this purpose, several methods of determining gas interchangeability, including those derived by the Wobbe Index, Delbourg and American Gas Association (AGA) and the standardization of classifying natural gas according to burning properties at home and abroad are discussed and some viewpoints about the problem of the standardization of Wobbe Index of the pipeline gas in China is put forward in the paper.