共查询到19条相似文献,搜索用时 62 毫秒
1.
2.
3.
介绍了高温高压双金属片式疏水阀的工作原理以及特殊结构的设计,论述了双金属片材料和组合结构的选择,优化了阀门在恶劣工况下阻汽排水性能。 相似文献
4.
杆密封件高温高压试验台具有低功率、高效率、结构简单、自动化程度高等特点,主要由计算机测试系统、电气控制系统、液压与气动系统、模拟加载试验台架组成。通过模拟加载试验台架模拟杆密封件的往复运动,采用工控机、PLC、传感器进行杆密封件性能试验数据的采集与存储,为检验杆密封件性能的优良和研制提供保障。 相似文献
5.
6.
7.
8.
9.
主要介绍了感应测井仪在井下工作时的金属密封,并以四芯同轴电缆与井下接头之间的密封方式设计为例,得出感应测井仪金属密封设计和装配规则。 相似文献
10.
11.
12.
13.
An electrodeless conductivity probe has been designed and tested at temperatures up to 250 degrees C and pressures of 4.13 MPa (600 psi). A unique pressure seal permits temperature cycling. Design of the electronics permits accurate measurement of conductivities at various elevated temperatures in spite of the change of magnetic properties of the toroids with temperature. The design of the probe can be adapted for insertion, in-line, or bypass operation. 相似文献
15.
16.
简述了高温高压阀门泄漏对生产的影响,分析了阀门泄漏的原因。通过一起成功的实例。介绍了在不停车条件下对高温高压阀门进行带压堵漏的技巧。 相似文献
17.
It is becoming more important to measure the pressure in high temperature environments in many industrial fields. However, there is no appropriate evaluation system and compensation method for high temperature pressure sensors since most pressure standards have been established at room temperature. In order to evaluate the high temperature pressure sensors used in harsh environments, such as high temperatures above 250 °C, a specialized system has been constructed and evaluated in this study. The pressure standard established at room temperature is connected to a high temperature pressure sensor through a chiller. The sensor can be evaluated in conditions of changing standard pressures at constant temperatures and of changing temperatures at constant pressures. According to the evaluation conditions, two compensation methods are proposed to eliminate deviation due to sensitivity changes and nonlinear behaviors except thermal hysteresis. 相似文献
18.
We report an experimental method to study the anelastic properties of materials at high pressure and high temperature. The multianvil high pressure deformation device, used to apply a cyclic loading force onto the sample, can reach 15 GPa and 2000 K. A synchrotron x-ray radiation source provides time resolved images of the sample and reference material. The images yield stress and strain as a function of time; stresses are derived from the reference material, and strains from the sample. This method has been tested by applying a sinusoidal stress at megahertz to hertz frequency on a San Carlos olivine specimen at 5 GPa and up to 2000 K. Strain as small as 10(-5) can be resolved. We have obtained experimental results which exhibit resolvable attenuation factor (Q(-1)) and shear modulus (M) at deep Earth conditions. These results are in quantitative agreement with previously reported lower pressure data and suggest that temperature and grain size have dominating effect on these properties. 相似文献