单芯铠装热电偶的应用.pdfVIP

应用与实践 单芯铠装热电偶的应用 Application of Mineral Insulated Thermocouple with One Conductor and a Sheath 周洪琴 刘仁聪 文东海 （重庆市大正温度仪表有限公司，重庆市 400700） Zhou Hongqin Liu Rencong Wen Donghai (Chongqing Shi DUCHINA Temperature Instrumnet Co., Ltd., Chongqing 400700) 【摘 要】单芯铠装热电偶是重庆市大正温度仪表有限公司研制的新产品，是一种全新结构的热电偶，开创 了热电偶新概念，使人们对热电偶从制造到应用都有了全新的认识。单芯铠装热电偶因其正负极 具有相互独立的绝缘和套管结构，偶芯直径相对较粗，正极和负极可以择优配对，所以测温精度 高，制造合格率高，焊接容易，可靠性高，柔韧性好，实现了简易热电偶方法。本文从单芯铠装 热电偶的技术现状、制造成本、应用前景、应用方式等方面进行了分析和说明，希望对单芯铠装 热电偶的推广和使用提供一些帮助。 【关键词】热电偶 单芯铠装热电偶 Abstract: Mineral insulated thermocouple with one conductor and a sheath is a new product developed by Duchina Temperatu re In strument Co., Ltd in Ch ongqing. It makes peop le has a new cogn ition for the thermocouple from manufacturin g to application du e to its n ew structure and new concept . This thermocouple has high precision of temperature and passing rate of manufacturing, easy welding, high reliability and flexibility because it has the coarse dual-core diameter, casing and insulation structure and best pair of its anode and cathode. It achieved easy and simple measurin g way in practice. The paper analyzed and explained current technology, manufacturing costs, app lication prospects and ways for mineral insulated thermocouples with one conductor and a sheath and hopes to be helpful for its promotion and application . Key words: Thermocouple Mineral Insulated Thermocouples with One Conductor and a Sheath 1 技术现状 得到了迅速的普及，经过近30年的时间，已在大约50% 1.1热电偶的发展历史 的测温场合取代或改造了装配热电偶。 热电偶用于测温已有180年的历史，从起初的两 1.2单芯铠装热电偶的产生 根正负极偶芯铰接