一种楔形自紧式承压电缆法兰
梁小冬，孙野
（西北核技术研究所，陕西 西安 710024）
摘要：在某爆炸实验中，爆室与室外的穿线管法兰盘承受管道内部最高16 MPa的瞬时压强，为确保内部电缆在爆炸过程中有很好的抗冲击效果，设计了一种自紧式法兰。先对该自紧式法兰进行结构设计，并对内部楔形块与电缆进行理论受力分析与有限元仿真分析，同时对选用8.8级连接螺栓进行强度校核，最后利用拉力计对该自紧式法兰进行拉力实验，并对理论计算值、仿真值和实验值进行分析。在实际应用中，该穿线管法兰满足了耐压强度要求，达到了预期的抗压效果。
关键词：自紧式法兰；承压电缆；连接螺栓
中图分类号：TH164 文献标志码：A doi：10.3969/j.issn.1006-0316.2018.05.014
文章编号：1006－0316 (2018) 05－0052－04
A Wedge Self-tightening Flange for Pressing Cable
LIANG Xiaodong，SUN Ye
( Northwest Institute of Nuclear Technology, Xi'an 710024, China )
Abstract：In an explosion experiment, a threading flange requires to bear the pressure up to 16 MPa between the burst chamber and the outdoor. In order to ensure that the cable has a good impact effect inside the pipe, then designing a self-tightening flange. In this paper, carrying out the structural design of the self-tightening flange firstly, carrying on the theoretical analysis and finite element analysis of the internal wedge and cable. At the same time, checking the strength of the 8.8 grade connecting bolts. Finally, doing the tensile test and analyzing the theoretical calculation, simulation and experimental values. In the practical application, the threading flange has satisfied the compressive strength requirements and achieved the expected compressive effect.
Key words：self-tightening flange；pressing cable；connecting bolt
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收稿日期：2017－10－23
作者简介：梁小冬（1988－），江苏东台人，硕士研究生，助理工程师，主要研究方向为机械设计。
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