Nuclear Techniques ›› 2019, Vol. 42 ›› Issue (5): 50602-050602.doi: 10.11889/j.0253-3219.2019.hjs.42.050602

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Optimization for surface texture on the shaft sleeve of a high temperature molten salt pump in molten salt reactor

Jun CHEN1,2,Xinyue JIANG1,2,Liangcheng LIN1,2,Yuan FU1()   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2019-03-13 Revised:2019-04-12 Online:2019-05-10 Published:2019-05-16
  • Contact: Yuan FU E-mail:fuyuan@sinap.ac.cn
  • About author:CHEN Jun, male, born in 1995, graduated from China University of Petroleum in 2016, master student, focusing on molten salt loop equipment research|CHEN Jun, male, born in 1995, graduated from China University of Petroleum in 2016, master student, focusing on molten salt loop equipment research|FU Yuan, E-mail: fuyuan@sinap.ac.cn
  • Supported by:
    Supported by Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA02001005)

Abstract: Background

The high temperature molten salt pump is the heart of the molten salt coolant thermal circuit. At present, the molten salt pump used in molten salt reactor adopts cantilever structure, and its long shaft needs to be supported by sliding bearings in molten salt. It is an effective method to improve the supporting capability and improve the tribological property by making texture of the inner surface of the sleeve a smooth one.

Purpose

This study aims at analysis of the surface texture finned high temperature molten salt pump.

Methods

The finite volume method was employed to study the bearing of high temperature molten salt pump. Smooth bearing was taken as contrast term, the bearing capacity of different textures such as non-texture, long texture, circular texture, square texture and cross-shaped texture was analyzed.

Results

By optimizing the shape, density and depth of texture, the bearing capacity can be improved. Cross-shaped texture with a length of 8 mm, a width of 3 mm and a depth of 20 μm shows the best bearing capacity.

Conclusion

Among the four textures studied in this paper, the cross-shaped texture has the best bearing capacity.

Key words: High temperature molten salt pump, Sliding bearing, Surface texture, Molten salt reactor

CLC Number: 

  • TL353+.1