This paper has carried out the non-contact measurement and relative measurement for the shaft diameter according to the property of the laser and the v-type block s centering automatically based on Fraunhofe single-gap diffraction principle .

Method of deciding mandril diameter and forming gap for coiled-type of JCOE steel pipe;

Based on the analysis of the measuring block,the loading block,the structure scheme and the selection of sensor,DWS ultraprecision(NANO-grade) vibration displacement measurement instrument and automatic data gathering tech are adopted to develop a new type of test table for testing the performances of gas dynamic and static pressure radial bearing.

This paper analyzes the reasons for the burning of the front radial bearing of the generator turbine Y 1701,presents the solutions for modification and the final effects.

Design principle and structure characteristic were discussed for reformation of internals of ammonia converter with one axial and three radial beds, the filling of catalyst and its heating and reducing processes were introduced, summarization was also made for running situation of production and economic benefit after reformation.