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Ceramic bearing and nuclear power pump equipped with ceramic bearing

A ceramic bearing and ceramic technology, which is applied to the components, pumps, and pump components of pumping devices for elastic fluids, can solve the problems of dry wear resistance, thermal shock resistance and impurity resistance at the same time, and achieve good resistance. The effect of impurity conditions

Active Publication Date: 2017-01-25
SEC KSB NUCLEAR PUMPS & VALVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a ceramic bearing to solve the problem that the original medium-lubricated guide bearing cannot meet the technical requirements of dry wear resistance, thermal shock resistance and impurity resistance at the same time

Method used

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  • Ceramic bearing and nuclear power pump equipped with ceramic bearing
  • Ceramic bearing and nuclear power pump equipped with ceramic bearing
  • Ceramic bearing and nuclear power pump equipped with ceramic bearing

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Experimental program
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Embodiment Construction

[0030] Such as figure 1 , figure 2 As shown, the ceramic bearing provided by the present invention involves four main parts, wherein the rotating parts are metal bushing 10 and ceramic bushing 20, both of which are installed through interference fit; the fixed parts are ceramic outer ring 30 and metal shell 40 , the two are also assembled by interference fit.

[0031] Such as image 3 As shown, the ceramic bushing 20 surrounds the outer side of the metal bushing 10 and is approximately at the middle position in the axial direction of the metal bushing 10, that is, the top and bottom of the metal bushing 10 respectively extend beyond the ceramic bushing. 20 top and bottom. The positions of the ceramic outer ring 30 and the metal shell 40 correspond to the axial position of the ceramic bushing 20; the metal shell 40 is arranged on the outer side of the ceramic outer ring 30, and the ceramic outer ring 30 The inner side of the corresponding to the outer side of the ceramic b...

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Abstract

The invention provides a ceramic bearing and a nuclear electric pump with the ceramic bearing. The ceramic bearing is internally provided with a metal shaft sleeve, a ceramic shaft sleeve, a ceramic outer ring and a metal shell, the metal shaft sleeve and the ceramic shaft sleeve serve as rotating components, the ceramic shaft sleeve is wound outside the metal shaft sleeve, the ceramic outer ring and the metal shell serve as fixing components, the metal shell is arranged on the outer side of the ceramic outer ring, and the inner side of the ceramic outer ring corresponds to the outer side of the ceramic shaft sleeve; the inter side of the metal shaft sleeve is provided with a plurality of hollow annular structures; the ceramic shaft sleeve or the ceramic outer ring is internally provided with carbon fiber in an embedded mode. The ceramic bearing can meet the technical requirements for being resistant to dry grinding, resistant to impact and resistant to impurity at the same time and can meet the rigor requirements of nuclear electric pump operation and accident conditions.

Description

technical field [0001] The invention relates to a bearing, in particular to a high-temperature-resistant, thermal-shock-resistant, and impurity-medium-resistant ceramic bearing, which is suitable for the nuclear safety level 2 and 3 pump fields of pressurized water reactor nuclear power plants. The invention also relates to a nuclear power pump equipped with ceramic bearings. Background technique [0002] The medium-lubricated guide bearings used in the existing nuclear 2 and 3 pumps are mostly made of engineering thermoplastics or metal materials sprayed with nickel base. Among them, the engineering thermoplastic guide bearing has high temperature resistance and dry wear resistance, and has good corrosion resistance and radiation resistance, but the medium is required to be pure and free of impurities. The guide bearing with metal sprayed nickel base material has good impurity resistance and radiation resistance, but the high temperature resistance and dry wear resistance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/046
CPCF04D29/046
Inventor 王晓坤于丽红戴子龙程剑
Owner SEC KSB NUCLEAR PUMPS & VALVES
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