作者：北京广利核系统工程有限公司 郝爱霞，李刚，王连春，李俊卿，柏祥基，冯四军  

摘要：核电站DCS仪控设备的电气接线工艺方法较多，其中最常见的连接工艺为螺钉紧固方式。其紧固力矩不仅保证了设备之间电气连接的可靠性，还可实现连接导线拆、接操作维护的方便性，但也存在螺钉紧固力矩应力释放，以及旋松或旋紧操作造成螺钉拧花、溢扣、断裂等质量问题。因此，对核电站DCS仪控设备电气端接采用直插式弹簧连接工艺方法进行了研究，报告了直插式弹簧连接工艺在核电站DCS仪控设备电气端接中的应用现状；按照核安全法规对安全级物项制造工艺过程控制要求，对电气端接连接质量的可靠性进行了影响分析，通过测试验证的方式，证明了直插式弹簧连接工艺的可靠性。直插式弹簧连接工艺相较于螺钉紧固操作，更为简单、易于控制，不仅能规避螺钉紧固连接的质量问题，还可提高接线操作效率，提出了直插式弹簧连接工艺在核电站安全级DCS仪控设备电气端接中应用的建议。

关键词： 电气端接；直插式弹簧连接工艺；可靠性；机械强度；弯曲测试；拔出测试；振动试验

Abstract: There are many electrical wiring process methods for DCS  instrumentation and controlling device in nuclear power plants, among  which the most common connection process is screw fastening.  The fastening torque not only ensures the reliability of the electrical  connection between equipment, but also realizes the convenience  of operation and maintenance of disconnection and connection of  connecting wires. However, there are also quality problems, such as  the stress release of the screw tightening torque, and the screw to  twist, overflow, break caused by tightening or loosening operation.  Therefore, the use of in-line spring connection technology for the  electrical termination of DCS instrument and controlling device in nuclear  power plants is studied, and the application status of the in-line spring  connection process in the electrical termination of DCS instrument and  control equipment in nuclear power plants is reported. Therefore, the  use of in-line spring connection technology for the electrical termination  of DCS instrument and controlling device in nuclear power plants is  studied, the application status of the in-line spring connection process in  the electrical termination of DCS instrument and control equipment in  nuclear power plants is reported, and controlling requirements of safety level items, the reliability of the electrical termination  connection quality is analyzed in accordance with the  nuclear safety regulations on the manufacturing process.  The Test verification proved the reliability of in-line spring  connection process. Compared with the screw fastening  operation, the in-line connection spring connection process  is simpler and easier to control. It can not only avoid the  quality problems of screw fastening connection, but also  improve the efficiency of wiring operation. Finally, we  propose the suggestions on the application of in-line spring  connection technology in the electrical termination of  safety-level DCS instrumentation and control equipment in  nuclear power plants

Key words: Electrical termination; In-line spring connection  process; Reliability; Mechanical strength; Bending test; Pullout test; Vibration test

在线预览：直插式弹簧连接工艺的可靠性研究.pdf

摘自《自动化博览》2021年8月刊