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一、膜式煤气表的机理,主要机构的设计与计算1.机理煤气表自1815年问世以来,迄今按不同机理已造出不下数十种,从而形成了不同的类型和结构。膜式煤气表是目前使用最广泛的一种,它普遍用于家用煤气计量和工商业、事业用气计量。而中小型的煤气表还未出现比膜式表更为先进的表型。膜式煤气表又称干式煤气表(以区别于用水封的湿式煤气表),是属于直接计量式(positive displacement)煤气表的一种。本文所论的膜式表是一种具有双薄膜、四计量室正交推挽式的,比较典型的结构,不少其他结构的设计都是以这种表型衍生而得的。
First, the membrane gas meter mechanism, the design and calculation of the main agency 1. Mechanism Gas meter since its inception in 1815, according to different mechanisms have so far created dozens of species, which formed a different type and structure. Membrane gas meter is currently the most widely used, it is commonly used for household gas metering and industrial and commercial gas measurement. The small and medium-sized gas meter has not yet appeared more advanced than the membrane-type phenotype. Membrane gas meter, also known as dry gas meter (as distinguished from the water sealed wet gas meter), is a kind of direct displacement (positive displacement) gas meter. In this paper, the membrane table is a double-membrane, four measuring chamber orthogonal push-pull, the more typical structure, many other designs are derived from this phenotype.