在高壓輸電路線工程施工的情況下,許多 做(zuo)工(gong)程(cheng)項(xiang)目(mu)的(de)朋(peng)友(you)們(men)常(chang)常(chang)會(hui)觸(chu)碰(peng)到(dao)髙(髙)壓(ya)電(dian)力(li)電(dian)纜(lan)連(lian)接(jie)頭(tou)。今(jin)日(ri),我(wo)就(jiu)和(he)大(da)家(jia)一(yi)起(qi)來(lai)討(tao)論(lun)討(tao)論(lun)髙(髙)壓(ya)電(dian)力(li)電(dian)纜(lan)連(lian)接(jie)頭(tou)的(de)類(lei)型(xing)及(ji)其(qi)它(ta)的(de)應(ying)用(yong)場(chang)所(suo)。優(you)選(xuan),大(da)家(jia)先(xian)而(er)言(yan)說(shuo)什(shen)麼(me)叫(jiao)髙(髙)壓(ya)電(dian)力(li)電(dian)纜(lan)連(lian)接(jie)頭(tou)。
髙壓電力電纜連接髙壓電力電纜連接頭是用以電力電纜本身的連接,有連接接頭、絕緣正中間接頭,對充油電力電纜及無縫鋼管電力電纜也有塞止式接頭等。
1.一般連接頭
它用以連接二根鄰近電力電纜。
在zai髙髙壓ya電dian力li電dian纜lan路lu線xian中zhong,直zhi達da接jie頭tou除chu連lian接jie纜lan芯xin電dian導dao體ti確que保bao電dian氣qi設she備bei連lian接jie外wai,對dui自zi容rong式shi充chong油you電dian力li電dian纜lan的de連lian接jie頭tou務wu必bi維wei持chi線xian芯xin中zhong油you排pai通tong暢chang。但dan因yin連lian接jie頭tou是shi在zai現xian場chang手shou工gong製zhi作zuo,其qi加jia工gong工gong藝yi標biao準zhun差cha。因yin此ci線xian上shang芯xin連lian接jie選xuan用yong鉚mao壓ya標biao準zhun下xia,單dan挑tiao芯xin連lian接jie處chu靜jing電dian場chang集ji中zhong化hua難nan題ti的de解jie決jue,根gen據ju提ti升sheng絕jue緣yuan薄bo厚hou,為wei此ci減jian少shao接jie頭tou工gong作zuo中zhong磁ci場chang強qiang度du來lai保bao證zheng 連lian接jie頭tou的de安an全quan性xing運yun作zuo。一yi般ban是shi在zai髙髙壓ya電dian力li電dian纜lan絕jue緣yuan上shang邊bian繞rao包bao增zeng繞rao絕jue緣yuan,增zeng繞rao絕jue緣yuan的de兩liang邊bian產chan生sheng錐zhui型xing麵mian地di應ying力li錐zhui。在zai增zeng繞rao絕jue緣yuan外wai邊bian繞rao包bao絕jue緣yuan屏ping蔽bi掉diao,將jiang兩liang邊bian電dian力li電dian纜lan絕jue緣yuan屏ping蔽bi掉diao相xiang接jie,而er其qi外wai邊bian有you一yi外wai亮liang無wu縫feng鋼gang管guan把ba絕jue緣yuan與yu空kong氣qi阻zu隔ge,那na樣yang就jiu可ke以yi承cheng擔dan充chong油you電dian力li電dian纜lan的de汽qi壓ya。
2.絕緣接頭
絕緣接頭內絕緣構造和規格與一般接頭同樣。110 ~ 225kV充(chong)油(you)電(dian)力(li)電(dian)纜(lan)絕(jue)緣(yuan)接(jie)頭(tou),關(guan)鍵(jian)用(yong)以(yi)大(da)長(chang)短(duan)電(dian)力(li)電(dian)纜(lan)路(lu)線(xian)中(zhong),使(shi)接(jie)頭(tou)兩(liang)邊(bian)電(dian)力(li)電(dian)纜(lan)的(de)金(jin)屬(shu)材(cai)料(liao)護(hu)線(xian)套(tao)或(huo)金(jin)屬(shu)材(cai)料(liao)屏(ping)蔽(bi)掉(diao)層(ceng)及(ji)半(ban)導(dao)電(dian)性(xing)層(ceng)在(zai)電(dian)氣(qi)設(she)備(bei)上(shang)斷(duan)掉(diao),便(bian)於(yu)交(jiao)叉(cha)式(shi)互(hu)聯(lian),降(jiang)低(di)外(wai)護(hu)層(ceng)(或屏蔽掉層〉耗損。
3.塞止式接頭
塞sai止zhi式shi接jie頭tou是shi充chong油you電dian力li電dian纜lan配pei件jian電dian氣qi性xing能neng最zui欠qian缺que的de階jie段duan,也ye是shi構gou造zao最zui繁fan雜za的de接jie頭tou。它ta關guan鍵jian用yong以yi起qi伏fu超chao過guo標biao準zhun值zhi的de黠xia性xing預yu浸jin紙zhi絕jue緣yuan電dian力li電dian纜lan路lu線xian中zhong,斷duan開kai油you道dao,避bi免mian 高檔電力電纜絕緣變枯、中低端電力電纜絕緣汽壓超出標準值。
115kV一室戶式塞止正中間接頭,一般用一個環氧樹脂膠防水套管將二根髙壓電力電纜的油排分離。
225kV雙室式塞止正中間接頭,用2個環氧樹脂膠防水套管將二根電力電纜的油排分離,在幾段電力電纜的塞止管上邊有一外腔,2個帶有電力電纜的內壁及一個外腔油排互通,呈兩條密封性構造。
4.無縫鋼管充油電力電纜接頭
空調銅管充油電力電纜接頭有一般連接接頭和半塞止接頭二種。
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