湘江電纜告訴你，高壓電力電纜連接頭有哪些

返回列表來源：湘江電纜發布日期 2018-11-08 08:37瀏覽：- 加入收藏

湘江電纜(lan)高壓電(dian)(dian)力(li)電(dian)(dian)纜(lan)連(lian)(lian)接(jie)頭用于(yu)電(dian)(dian)力(li)電(dian)(dian)纜(lan)自身(shen)的(de)連(lian)(lian)接(jie)，有(you)連(lian)(lian)接(jie)接(jie)頭、絕(jue)緣中間(jian)接(jie)頭，對(dui)充油電(dian)(dian)力(li)電(dian)(dian)纜(lan)及鋼管電(dian)(dian)力(li)電(dian)(dian)纜(lan)還有(you)塞(sai)止式接(jie)頭等。

1.普通連接頭

它用于連接(jie)兩根相鄰電(dian)力電(dian)纜。

在(zai)高(gao)壓電(dian)(dian)力(li)(li)電(dian)(dian)纜線(xian)(xian)路中，直通(tong)接(jie)(jie)頭(tou)(tou)(tou)(tou)除(chu)連(lian)(lian)(lian)接(jie)(jie)纜芯導體保(bao)證電(dian)(dian)氣(qi)連(lian)(lian)(lian)通(tong)外(wai)，對自容式(shi)充油(you)(you)電(dian)(dian)力(li)(li)電(dian)(dian)纜的(de)連(lian)(lian)(lian)接(jie)(jie)頭(tou)(tou)(tou)(tou)必須保(bao)持線(xian)(xian)芯中油(you)(you)流暢通(tong)。但因連(lian)(lian)(lian)接(jie)(jie)頭(tou)(tou)(tou)(tou)是在(zai)現場手工(gong)操作(zuo)，其工(gong)藝條件(jian)差。因而在(zai)線(xian)(xian)芯連(lian)(lian)(lian)接(jie)(jie)采用壓接(jie)(jie)條件(jian)下，對線(xian)(xian)芯連(lian)(lian)(lian)接(jie)(jie)處電(dian)(dian)場集中問題的(de)處理，通(tong)過(guo)增加(jia)絕(jue)緣(yuan)厚(hou)度(du)，以此降低(di)接(jie)(jie)頭(tou)(tou)(tou)(tou)工(gong)作(zuo)場強(qiang)來確保(bao)連(lian)(lian)(lian)接(jie)(jie)頭(tou)(tou)(tou)(tou)的(de)安全(quan)運行。通(tong)常是在(zai)電(dian)(dian)力(li)(li)電(dian)(dian)纜絕(jue)緣(yuan)上面(mian)(mian)繞包(bao)增繞絕(jue)緣(yuan)，增繞絕(jue)緣(yuan)的(de)兩端形成(cheng)錐形面(mian)(mian)應力(li)(li)錐。在(zai)增繞絕(jue)緣(yuan)外(wai)面(mian)(mian)繞包(bao)絕(jue)緣(yuan)屏(ping)蔽，將(jiang)兩端電(dian)(dian)力(li)(li)電(dian)(dian)纜絕(jue)緣(yuan)屏(ping)蔽相連(lian)(lian)(lian)，而其外(wai)面(mian)(mian)有一(yi)外(wai)亮(liang)鋼管把絕(jue)緣(yuan)與(yu)大(da)氣(qi)隔絕(jue)，這樣即可承受(shou)充油(you)(you)電(dian)(dian)力(li)(li)電(dian)(dian)纜的(de)油(you)(you)壓。

2.絕緣接頭

絕(jue)(jue)緣(yuan)接(jie)頭內絕(jue)(jue)緣(yuan)結構和尺寸與普通(tong)接(jie)頭相同。110 ~ 220kV充油電力(li)電纜(lan)(lan)絕(jue)(jue)緣(yuan)接(jie)頭，主(zhu)要用于大(da)長度電力(li)電纜(lan)(lan)線路中(zhong)，使接(jie)頭兩(liang)端電力(li)電纜(lan)(lan)的(de)金(jin)屬護(hu)套或金(jin)屬屏蔽(bi)層(ceng)及半導(dao)電層(ceng)在電氣上斷開，以(yi)便交叉互連(lian)，減少護(hu)層(ceng)(或屏蔽(bi)層(ceng)〉損耗。

3.塞止式接頭

塞(sai)止式(shi)接(jie)頭是充油(you)電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)纜(lan)附件(jian)電(dian)(dian)(dian)(dian)性(xing)能最薄(bo)弱的(de)環節，也(ye)是結構最復雜(za)的(de)接(jie)頭。它(ta)主要用于落差(cha)大(da)于規定(ding)(ding)值的(de)黠性(xing)浸漬紙絕緣電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)纜(lan)線路中，截斷(duan)油(you)路，防止高端電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)纜(lan)絕緣干枯、低端電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)纜(lan)絕緣油(you)壓超過規定(ding)(ding)值。

110kV單室式塞止(zhi)中間接頭，通常用一個環氧樹脂套管將兩根(gen)電(dian)力電(dian)纜的油(you)流分開(kai)。

220kV雙室式塞(sai)止(zhi)中間接頭，用兩(liang)個環氧樹(shu)脂套管將(jiang)兩(liang)根電(dian)力(li)電(dian)纜(lan)的油(you)流分開，在兩(liang)段(duan)電(dian)力(li)電(dian)纜(lan)的塞(sai)止(zhi)管上(shang)面有(you)一外腔，兩(liang)個含有(you)電(dian)力(li)電(dian)纜(lan)的內腔及一個外腔油(you)流相(xiang)通，呈(cheng)兩(liang)道密(mi)封結構。

4.鋼管充油電力電纜接頭

銅管充油電力(li)電纜接頭有(you)普通連(lian)接接頭和半塞止接頭兩種。

普通連接接頭(tou)，用(yong)于電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)制造(zao)長度連接，它的(de)內絕緣結構一般與(yu)自容式充油(you)(you)(you)電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)接頭(tou)相間，其(qi)外殼是(shi)一個直徑稍大(da)(da)于電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)管(guan)(guan)道的(de)銅管(guan)(guan)。半塞止接頭(tou)，用(yong)于較長的(de)鋼(gang)管(guan)(guan)充油(you)(you)(you)電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)線路。它是(shi)為避免一旦發生漏油(you)(you)(you)事故造(zao)成大(da)(da)量電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)袖的(de)流(liu)失而設計的(de)接頭(tou)，用(yong)來分隔供油(you)(you)(you)區(qu)(qu)段，使兩區(qu)(qu)段的(de)油(you)(you)(you)經過電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)絕緣層或(huo)旁路管(guan)(guan)流(liu)通。在接頭(tou)的(de)鋼(gang)管(guan)(guan)與(yu)電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)鋼(gang)管(guan)(guan)連接處，采用(yong)密封結構把電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)(lan)(lan)(lan)(lan)油(you)(you)(you)路分開。