Study of Overhung Pump Performance Considering Thermal Stress

Mechanics and Advanced Technologies

Aleksei Kozlov¹  Viacheslav Khvorost²  Olha Orel²  Anna Fursina³ 

[1] JSC “NASOSENERGOMASH Sumy”;Public JSC “VNIIAEN”;Zaporozhye National Technical University

关键词: single-stage overhung pump;    pump performance;    running clearance;    convective heat-transfer;    heat conduction;    heat-transfer coefficient;    temperature field;    displacement field;    stresses;    temperature deformations;   

DOI  :  10.20535/2521-1943.2018.2.129004

学科分类：工程和技术（综合）

来源: Igor Sikorsky Kyiv Polytechnic Institute

【 摘 要 】

The object of the study is a centrifugal horizontal single-stage overhung pump that is a part of the steam generator emergency cooldown system and designed to return the steam condensate of the secondary system of NPP to the steam generator during emergency condition. Aimed to justify the pump performance we performed research and evaluated strength of stressed pump under mechanical loads and temperature field by means of 3D model. The change in the running clearance between rotor and stator parts was studied as a time function under unsteady temperature field. The operability of the pump was proved with respect to its strength and allowable running clearances of gap seals as well as it was shown that deformation of pump parts under thermal stress greatly depends on temperature field distribution. It was found that it is necessary to consider heat-transfer process under temperature field stress in order to design high-efficient reliable equipment.

【 授权许可】

CC BY