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| Destructive Effect on Integrity of Pressure-retaining Boundary Imposed by Bimetal Flywheel Missiles in the Canned Motor Pump |
| Received:December 03, 2018 Revised:February 25, 2019 |
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| DOI：10.7643/ issn.1672-9242.2019.02.004 |
| KeyWord:canned motor pump bimetal flywheel containment analysis integrity of pressure-retaining boundary |
| Author | Institution |
| TANG Xu |
Shanghai JiaoTong University, Shanghai , China |
| ZHANG Ji-ge |
Shanghai JiaoTong University, Shanghai , China |
| WANG De-zhong |
Shanghai JiaoTong University, Shanghai , China |
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| Abstract: |
| Objective To grasp the influencing rule of the destructive effect on integrity of pressure-retaining boundary im-posed by bimetal flywheel missiles in the reactor coolant pump. Method This paper analyzed the impact between tungsten alloy block and pressure-retaining boundary (motor casing) after the failure of the flywheel retaining ring by ANSYS/LS-DYNA, and simulated the process that the boundary contains the flywheel missiles under different conditions (the thickness of motor casing, the number of tungsten alloy blocks). Results The uncontained accidents occur when the thickness of the motor casing was less than 118 mm, with incident velocity being constant. The more number of tungsten alloy blocks, the less destructive energy that the missile put on the boundary could be observed by changing the number of tungsten alloy blocks (4,8,12,16). Conclusion In-creasing the thickness of motor casing and number of tungsten alloy blocks could help the pressure-retaining boundary contain the missiles successfully. The results of this research are of great significance to the reliability design of the canned motor pump inert flywheel. |
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