Performance Design and Experimental Study of Large-load Isolators

Li Xingzhao; Ma Weijie; Liu Haowen; Du Xinxin; Han Chao; Sun Yue; Peng Fanglan

doi:10.13832/j.jnpe.2024.03.0154

Volume 45 Issue 3

Jun. 2024

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Article Navigation > Nuclear Power Engineering > 2024 > 45(3): 154-160

Li Xingzhao, Ma Weijie, Liu Haowen, Du Xinxin, Han Chao, Sun Yue, Peng Fanglan. Performance Design and Experimental Study of Large-load Isolators[J]. Nuclear Power Engineering, 2024, 45(3): 154-160. doi: 10.13832/j.jnpe.2024.03.0154

Citation:

Li Xingzhao, Ma Weijie, Liu Haowen, Du Xinxin, Han Chao, Sun Yue, Peng Fanglan. Performance Design and Experimental Study of Large-load Isolators[J]. Nuclear Power Engineering, 2024, 45(3): 154-160. doi: 10.13832/j.jnpe.2024.03.0154

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Performance Design and Experimental Study of Large-load Isolators

doi: 10.13832/j.jnpe.2024.03.0154

1.
Nuclear Power Institute of China, Chengdu, 610213, China
2.
College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China

Received Date: 2023-10-27
Rev Recd Date: 2024-03-14
Publish Date: 2024-06-13

Abstract

Abstract

A large-load isolator is designed for heavy equipment of nuclear power system by combining disc spring with magnetorheological liquid phase. The magnetorheological fluid damper is used as the main damping component, and the composite component of small stiffness and large stiffness disc spring is used as the main bearing structure. Through the analysis and design of the disc spring composite component, the structural parameters of the composite component are determined, and the sample isolator is formed accordingly. The spring rate ratio and damping ratio of the isolator samples were tested. The results show that the rated load of the isolator reaches 11 tons and the natural frequency is about 6.2 Hz. The dynamic stiffness and damping ratio performance of the isolator are relatively stable in the range of main vibration isolation frequencies. However, the dynamic stiffness and damping ratio are greatly affected by the amplitude. When the vibration amplitude increases from 0.05 mm to 0.2 mm, the dynamic stiffness decreases from about 100 kN/mm to about 45 kN/mm, and the damping ratio increases from about 0.07 to about 0.19. The research in this paper can provide technical reference and support for subsequent engineering applications.
- Isolator,
- Large-load,
- Disc springs,
- Stiffness,
- Damping ratio

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References(15)

References

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