论文部分内容阅读
设计了测量液体压缩率的超高压试验装置．采用自制的传感器测量了超高压腔体内的压力和动密封部件与超高压腔体间的摩擦压力．发现该摩擦压力约为超高压腔实际工作压力的３０％；用差分测量法可消除密封部件和试验装置弹性变形对测量结果的影响；同时测量了几种润滑油的体积压缩率，并用２个数学模型对试验数据进行处理，消除了系统误差，给出了压缩率与压力的关系式．结果表明，超高压试验装置结构合理，密封可靠，测试方法先进，测量精度高．
An ultrahigh-pressure test device for measuring liquid compression rate was designed. The self-made sensor was used to measure the pressure in the ultra-high pressure chamber and the friction pressure between the moving part and the ultra-high pressure chamber. It is found that the friction pressure is about 30% of the actual working pressure of the ultrahigh-pressure chamber. The differential measurement method can eliminate the influence of the elastic deformation of the sealing member and the test device on the measurement results. Meanwhile, the volumetric compression rate of several lubricating oils is measured, Mathematical model of the experimental data processing, eliminating the system error, given the compressibility and pressure relationship. The results show that the structure of the EHV test device is reasonable, the seal is reliable, the testing method is advanced and the measuring precision is high.