接触式中间旋转环式机械密封的结构优化

发布时间：2018-01-20 23:10

本文关键词： 中间旋转环式机械密封密封性能静环动环　出处：《润滑与密封》2016年06期 　论文类型：期刊论文

【摘要】：借助ANSYS分析影响中间旋转环式机械密封性能的关键结构参数,结果表明,静环和动环的伸出长度对密封性能的影响很小,中间环厚度和密封面宽度对密封性能的影响较大,且中间环厚度及密封面宽度对密封性能的影响是相互独立的;中间环厚度增大时,最高温度和最大等效应力减小,但最大接触压力和泄漏量增大;密封面宽度增大时,最高温度、最大等效应力和泄漏量增加,但最大接触压力减小。对密封环结构进行优化,得出最佳的动静环伸出长度、中间环厚度和密封面宽度,优化后机械密封的最高温度、最大等效应力、最大接触压力下降,对机械密封的运转更为有利。
[Abstract]:By means of ANSYS analysis, the key structural parameters affecting the mechanical seal performance of the intermediate rotary ring are analyzed. The results show that the extension length of the static ring and the moving ring has little effect on the seal performance. The thickness of the middle ring and the width of the sealing face have great influence on the sealing performance, and the influence of the thickness of the middle ring and the width of the seal face on the sealing performance is independent. When the thickness of the intermediate ring increases, the maximum temperature and maximum equivalent stress decrease, but the maximum contact pressure and leakage increase. The maximum temperature, maximum equivalent stress and leakage amount increase with the increase of sealing face width, but the maximum contact pressure decreases. The structure of seal ring is optimized, and the optimum length of static and static ring is obtained. The thickness of the middle ring and the width of the sealing surface, the maximum temperature, the maximum equivalent stress and the maximum contact pressure of the mechanical seal after optimization are more favorable to the operation of the mechanical seal.
【作者单位】：武汉理工大学能源与动力工程学院;广州机械科学研究院有限公司;
【基金】：国家自然科学基金重点项目(51139005)
【分类号】：TH136
【正文快照】： 随着水下航行器的大型化发展,其尾轴直径及尾轴机械密封尺寸也向大型化方向发展,线速度变大,加之海水介质压力较大,更易出现局部温升过高的情况,甚至出现汽化和密封环开启现象,从而导致密封失效[1-4]。为解决上述问题,具有泄漏量少、寿命长、摩擦耗功小、无磨损、密封参数高等

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