一、礦用電纜的使用壽命是多久
礦用電纜的型號有很多,礦用(yong)電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(lan)、礦用(yong)控制電(dian)(dian)(dian)纜(lan)(lan)、采煤機(ji)電(dian)(dian)(dian)纜(lan)(lan)以及(ji)礦用(yong)橡套移動軟電(dian)(dian)(dian)纜(lan)(lan),不同型號的礦用(yong)電(dian)(dian)(dian)纜(lan)(lan)使用(yong)壽命不一樣(yang)。
礦用(yong)(yong)電(dian)(dian)(dian)力電(dian)(dian)(dian)纜(lan)(MYJV、礦用(yong)(yong)控(kong)制電(dian)(dian)(dian)纜(lan)(MKVVMKYJV)一(yi)般(ban)固定(ding)敷設,使(shi)用(yong)(yong)壽(shou)命一(yi)般(ban)都很(hen)長,至少要(yao)10年(nian)(nian)(nian)。采煤機電(dian)(dian)(dian)纜(lan),它(ta)的使(shi)用(yong)(yong)壽(shou)命就不是很(hen)高了,質量(liang)好點(dian)的一(yi)般(ban)在半年(nian)(nian)(nian)到一(yi)年(nian)(nian)(nian),質量(liang)次點(dian)的7天到3個月,礦上為了安全,一(yi)般(ban)一(yi)根(gen)電(dian)(dian)(dian)纜(lan)使(shi)用(yong)(yong)到一(yi)定(ding)時間就得要(yao)換。礦用(yong)(yong)移(yi)動(dong)軟電(dian)(dian)(dian)纜(lan)這類(lei)壽(shou)命也不是很(hen)長(MYPMYPTJ),一(yi)年(nian)(nian)(nian)以(yi)上。
二、如何提高礦用電纜的壽命
在使用過程中采煤機電纜局部的彎曲半徑遠遠小于標準規定的電纜的彎曲半徑,電纜長期頻繁受到過度彎曲、拉伸等兩種以上應力的復合作用,再加上控制線芯導體截面遠遠小于電纜主線芯的導體截面,致使控制線芯的斷芯。那么如何提高礦用電纜的使用壽命呢?
1、增加煤礦用采煤機電(dian)纜的柔軟性(xing)。
2、增加控制線芯(xin)的相(xiang)對滑移性。
3、增加(jia)煤礦用采煤機電纜導體(ti)的強度。
4、將導體由原(yuan)來的束(shu)絞(jiao)結(jie)構(gou)改(gai)為正(zheng)規絞(jiao)合(he),這樣可以增加它的彎曲性能,然后在導體外面進(jin)行(xing)鋼絲編(bian)織(zhi),而增加它的強度(du)。
5、控制線芯可以采用鍍錫銅絲和(he)鋼絲混合編(bian)織,也是一個不(bu)錯的方法(fa)。