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前言弹簧管式压力表广泛用于工业压力测量,然而在液体传压介质内含有杂质或具有振动情况下,采用这种单独弹簧管式压力表,不仅易堵塞失灵,而且易损坏。本文作者研制了一种采用波纹管作为弹簧管隔离装置的压力表,经理论设计计算与实际校准,得知波纹管隔离对示值误差影响甚微,其性能、准确度等均达到普通压力表的指标。作为防止堵塞、起隔离作用的一种新型压力表,它具有广泛的应用价值。若稍加改进,还可起对液体压力波动较大的耐震作用。一、隔离原理该设计采用弹簧管与波纹管联通、密封,并在其腔内充满油液(见图)。当外部被测压
Preface Spring-type pressure gauge is widely used in industrial pressure measurement, but in the liquid pressure medium containing impurities or vibration, the use of such a single spring-tube pressure gauge, not only easy to plug failure, and easily damaged. The author of this paper developed a pressure gauge with bellows as a spring tube isolation device, which is theoretically calculated and calibrated theoretically. It is known that the bellows isolation has little effect on the indication error, and its performance and accuracy reach the general pressure gauge index of. As a new type of pressure gauge that prevents clogging and isolates, it has a wide range of applications. If a little improvement, but also from the liquid pressure fluctuations greater shock effect. First, the isolation principle The design uses spring tube and bellows Unicom, sealed, and filled with oil in the cavity (see photo). When the external pressure is measured