Wuhu Hengxin Cable Co., Ltd
Contact:Mr Dai
Phone: 13955309088
Address: 13955309088@163.com
Address: Jiuhua North Road Electrical Components Industrial Park, Wuhu City, Anhui Province
Working principle of electric heating belt
电伴热带的内芯两侧均为铜导线。正常工作时,线间加有220v的电压,两线之间产生热量的部分由半导电塑料制成,其导电率随环境温度的变化而变化。当环境温度升高时,其阻值也随之上升,产生的热量降低,当环境温度升高到一定值时,半导电塑料内电流降到最小值,伴热带产生的热量接近于零,从电伴热带的结构和原理可得知,电伴热带的长度可根据所需的发热量而任意地切割。电伴热带的长度增加,相当于两电源线之间的负载增加;长度减少,相当于两电源线之间的负载减少。电伴热带的两端导线不能短接,并且在电伴热带交叉重叠时,不影响其工作性能,它可以根据温度自动地调节放热量。
20世纪60年代,随着工业的展开,西方许多国度的石油化工厂、炼油厂、发电厂、消防管道、油田开采、海洋石油平台等普遍采用管道技术保送原油等液体,带动了管道电伴热保温新技术的不时展开。70年代初,一些生产厂家运用了高分子辐射技术开发出自控温电伴热带。自此,我国也有部分厂家纷繁研发、设计、重复实验、消费制造,并且依据国情,开发出适合本土国情的产品。但由于消费设备、技术程度、工艺条件的限制,产品质量也良莠不齐。假定用户不慎运用了劣质的电伴热带,轻则短路跳闸,重则会引发伴热管线起火,致使烧毁被伴热设备等重要部件
那么,如何鉴别电伴热带的优劣,则是我们广大用户朋友在选购电伴热带时的头号大事。众所周知,电伴热带的电热元件是具有正温度效应的PTC芯带,这旨在两根平行金属导线之间平均地包覆一层横向流过PTC资料层,抵达另一根导线,PTC层就是并联在两根导线之间的电阻发热体,它能将电能转化为热能,对管道等操作系统中止了加热、伴热、保温。
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