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
What are the classifications of electric heat tracing provided by electric heat tracing manufacturer
常用电伴热针对不同的管道(罐体)可分为以下几种:
自限温
此伴热带随温度升高电阻变大功率变小,由于其启动时电流较大,所以使用长度一般不超过100米,伴热带可随意剪切,无论多长,通上额定电压都能发热。
并联式
此伴热带两根(或三根)平行的绝缘铜绞线作为电源母线,PTC特性发热丝缠绕在骨架上,每隔一个发热节长度为母线交替连接,形成连续的并联电阻,此伴热带使用长度10-800米左右。
串联式
此伴热带将三根具有相同截面积,一定长度的平行绝缘铜绞线为电源母线和发热芯线,将其一端可靠短接,另一端接上380V(或设计的电压)电源,就形成了一个星形负载,根据焦耳一楞次定律:Q=0.24IRT电能转化为热能星形负载不断放出热量,形成一条连续的、发热均匀的电伴热带。根据实际情况需要,电伴热带的三相(单相)可以各自分开(分体式),也可以整合为一体。此伴热带使用长度不能太短,一般使用500-2500米左右。
高温电
此伴热带由玻璃纤维或其它耐高温材料制成,耐温300℃以内,长度1-50米不等。
硅橡胶电
此加热带可用于潮湿的、无爆炸性气体场所工业设备或实验室管箱,罐体和槽池,油桶(箱)的加热、伴热和保温,加热带长度1-15米。
MI加热电缆
此加热电缆是金属线芯(发热体)、线芯周围紧密的环绕着矿物质氧化镁(绝缘层)及经过多次拉制过的金属管(通常是铜、钢或是不锈钢等)构成,连续工作温度可达250-590℃,短期工作温度可至1083℃,使长度18-680米。
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