Measurement and Analysis of Strain and Calibration of Pressure in Piston-Cylinder Type Apparatus with 4.5 GPa Hydrostatic Pressure
-
摘要: 本文提供了提高现有活塞圆筒式高压装置流体静压强的一种实验方法。成功地制作了锰铜丝压力计,并利用铋丝相变准确地做了压力校正。各箍的应力检测分析和相对位移测量都表明:无论压腔空载或充液时,在0.000 1~3.08 GPa均不显示出同步箍紧作用;上下缸的压强差偏大带来高压暴露的危险。为把流体静压强提高到3.08 GPa以上,建议改进设计;(1)内箍中箍合二为一,外箍分为上下二层,将增加箍力;(2)调整各箍之间接触圆锥面的面积,将有助于同步箍紧;(3)增大密封套圈的无支承面,将减少上下缸压差,有利于安全运行。Abstract: This paper gives an experimental method which improves the hydrostatic pressure in the present piston-cylinder type apparatus. Manganin gauges were made successfully and calibrated accurately by phase change of Bi. Measurement and analysis of both strain and relative displacement all show that (1) there are no synchronous contracting role of hoops in the range of 0.000 1~3.08 GPa when the pressure cavity is empty or full of liquid; (2) large difference between upper and lower oil pressure will bring about danger of high pressure explosion. In order to obtain the hydrostatic pressure higher than 3.08 GPa. We suggest to modify the criginal design: (1) if the internal hoop and the middle hoop combined into one and the outer hoop divided into an upper half layer and a lower half layer, strain of hoops will be enhanced; (2) adjusting the area of contact surface between hoops will help the synchronous contracting role; (3) increasing the unsupported area of sealed sleeve will reduce the difference between upper and lower oil pressure, hence will be advantageous to safety of operation.
-
车荣钲. 30 kbar流体静压力微型压力计及其压力校正. 中国科学院物理研究所高压实验室, 1982. 苏昉, 车荣钲. 第五届全国高压学术讨论会论文集, 待发表. 饭田修一, 等. 物理学常用数表. 北京: 科学出版社, 1979: 74. Vodar B, Marteau Ph. High Pressure Sciences and Technology. Calibration of the High Pressure Scale: 259. Бутузов В П, Понятовский Е Г. Крцсмаииозрафця, 1956, 1: B5. Bridgman P W. High Pressure Physics, ONIT, 1935.
点击查看大图
计量
- 文章访问数: 7066
- HTML全文浏览量: 454
- PDF下载量: 612