管路弹性密封穿舱结构设计研究

Design of pipe element passing through bulkhead with elastic seal installation

为减少舰船管路系统的振动能量往舱壁传播,设计一种新型弹性密封穿舱结构。该穿舱结构以金属波纹管为弹性元件,以金属橡胶为阻尼元件,采用缝焊工艺实现密封要求。以插入损失为评价指标,采用有限元方法对穿舱结构的强度及隔振效果进行分析。结果表明与刚性穿舱结构相比,弹性穿舱结构的隔振效果明显,各方向平均插入损失最大为25.4 dB,且穿舱结构的共振频率与共振峰均有显著降低与减少。

To reduce the transmission of vibration energy from the ship’s pipeline system to the bulkhead,a new type of pipe element passing through bulkhead with elastic seal installation was designed.This pipe element passing through bulkhead uses metal bellows as elastic element and metal rubber as damping element,and adopts seam welding technology to achieve sealing requirements.The insertion loss was used as the evaluation index of vibration reduction effect.The finite element method was used to analyze the strength and vibration isolation effect of the pipe element passing through bulkhead structure.The results show that compared with the rigid pipe element passing through bulkhead structure,the vibration isolation effect of the pipe element passing through bulkhead with elastic seal installation is obvious,and the average insertion loss in all directions is 25.4 dB,and the resonance frequency and formant of the pipe element passing through bulkhead structure are significantly reduced.