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一、无汞差压计的结构和工作原理无汞差压计的结构,在外形上与有汞差压计基本相同。两者之间的主要区别在于差压计正压容器内部一个是用波纹管组件(或橡胶杯形膜组件),一个是用水银及浮子。无汞差压计利用弹性元件(或组合弹性元件)作为敏感元件,代替原来的水银和浮子。我们现在改装的是用波纹管与弹簧组成敏感元件所构成的。无汞差压计铜波纹管的组件、元件图如图1、2所示。差压计由于波纹管的隔离,分成了正、负压室。当波纹管与弹簧组合元件受到
First, the structure and working principle of mercury-free differential pressure gauge Structure of mercury-free differential pressure gauge, in appearance with a mercury differential pressure gauge is basically the same. The main difference between the two is that one of the inside of the positive pressure container of the differential pressure gauge is a bellows assembly (or a rubber-cup shaped membrane assembly) and one is made of mercury and a float. Mercury-free differential pressure gauge using flexible components (or combination of flexible components) as a sensitive element, instead of the original mercury and float. We are now modified is the composition of the bellows and the spring composed of sensitive components. Mercury-free pressure gauge copper bellows components, components shown in Figure 1,2. Differential pressure gauge bellows due to the separation into positive and negative pressure chamber. When the bellows and spring combination of components received