摘要
以水下压力传感器为研究对象,分析了波纹膜片的压力补偿机理,基于液体的可压缩性,提出了一种分析波纹膜片压力补偿性能的方法,推导出传感器工作水深与波纹膜片的补偿体积以及内外压差之间的关系式,并给出了内外压差的计算流程,为压力补偿用波纹膜片的分析和设计提供依据。对相同材料和尺寸的波纹膜片与平膜片的压力补偿性能进行了分析,结果表明存在一个衡量两种膜片压力补偿性能的水深临界值,当水深大于该临界值时,波纹膜片的压力补偿性能优于平膜片。
The compensation mechanism of the corrugated diaphragm used as the pressure compensation element in underwater pressure sensor is analyzed. Based on the compressibility of liquid, the method for analyzing the compensation performance of corrugated diaphragm is presented and the relationship among the work depth of sensor, the compensation volume of the corrugated diaphragm and the differential pressure between internal and external of pressure sensor is derived, and the process to calculate the differential pressure is also brought forward, which can be used to analyze and design the corrugated diaphragm used as pressure compensation element. The compensation performance of flat and corrugated diaphragm which have the same material and size is also analyzed. Results show that there is a depth threshold to measure the pressure compensation performance of the two kinds of diaphragm. When the water depth is greater than the threshold, the pressure compensation performance of corrugated diaphragm is better than that of flat diaphragm.
出处
《计量学报》
CSCD
北大核心
2016年第2期159-162,共4页
Acta Metrologica Sinica
基金
国家自然科学基金(51279044,41076061)
高等学校博士学科点专项科研基金(2009011111006)
关键词
计量学
水下仪器设备
压力补偿
波纹膜片
补偿体积
压差
metrology
underwater equipment
pressure compensation
corrugated diaphragm compensation volume
differential pressure
