雙連三通
是在管路(lu)系統中(zhong)用(yong)于(yu)(yu)改變管路(lu)方(fang)向的(de)管件(jian)(jian)(jian),目(mu)前,彎(wan)(wan)頭(tou)(tou)都(dou)是單體(ti)(ti)式(shi),單個(ge)彎(wan)(wan)頭(tou)(tou)獨(du)(du)立連(lian)(lian)接(jie)單根(gen)(gen)管件(jian)(jian)(jian),但若管件(jian)(jian)(jian)為多根(gen)(gen)時,每根(gen)(gen)管件(jian)(jian)(jian)或每個(ge)彎(wan)(wan)頭(tou)(tou)都(dou)需單獨(du)(du)固定于(yu)(yu)墻(qiang)體(ti)(ti)上,安(an)裝不(bu)便,且安(an)裝穩定性差,市(shi)場上的(de)塑料彎(wan)(wan)頭(tou)(tou)通常(chang)采用(yong)承(cheng)(cheng)插(cha)式(shi)連(lian)(lian)接(jie),承(cheng)(cheng)插(cha)式(shi)連(lian)(lian)接(jie)簡(jian)單,但連(lian)(lian)接(jie)強(qiang)度(du)較(jiao)差,會因流(liu)體(ti)(ti)壓(ya)(ya)強(qiang)造成連(lian)(lian)接(jie)處松動,影響密封(feng)性,另外(wai)由于(yu)(yu)彎(wan)(wan)頭(tou)(tou)在流(liu)體(ti)(ti)的(de)轉彎(wan)(wan)處,流(liu)體(ti)(ti)對彎(wan)(wan)頭(tou)(tou)產生的(de)沖擊(ji)及壓(ya)(ya)強(qiang)大,所(suo)以彎(wan)(wan)頭(tou)(tou)的(de)結(jie)構強(qiang)度(du)也尤為重要。
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