【機械三(san)(san)通(tong)】什么是機械三(san)(san)通(tong) 機械三(san)(san)通(tong)和溝槽三(san)(san)通(tong)有什么區(qu)別

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機械三通

機械三通與普通三通作用一致。機械三(san)通(tong)分為溝槽機械三(san)通(tong)和螺紋(wen)機械三(san)通(tong)。它可用于(yu)直接在(zai)鋼管(guan)上接出支(zhi)管(guan)，在(zai)消防管(guan)道(dao)及(ji)噴淋(lin)管(guan)道(dao)的(de)(de)安裝上有較(jiao)多應用。在(zai)需要分流或合流的(de)(de)時候可以(yi)采(cai)用機械三(san)通(tong)。

溝槽式三通、溝槽式四通、機械三通、機械四通等管件必須采用標準規格產品；支管接頭的開孔設施必須專門的開孔機。當支管管徑不符合標準規格時，可在接出管上異徑管等轉換支管管徑。首(shou)先在鋼管(guan)上用(yong)開(kai)(kai)孔(kong)機開(kai)(kai)孔(kong)，然后將機械三(san)通卡入孔(kong)洞，孔(kong)四周(zhou)由密封(feng)圈(quan)沿(yan)管(guan)壁(bi)密封(feng)。機械三(san)通分絲接和溝槽式兩種。機械三(san)通連接時(shi)，應檢查機械三(san)通與孔(kong)洞的間隙，各部位(wei)應均(jun)勻，然后再緊固到位(wei)；機械三(san)通開(kai)(kai)孔(kong)間距不應小于1m。

機械三通與溝槽三通區別

1、機械(xie)三通(tong)可(ke)用于直接在鋼(gang)管上接出支管。

2、首先在鋼管(guan)上(shang)用開(kai)孔機開(kai)孔，然后將機械三(san)通(tong)(tong)卡入孔洞，孔四周由(you)密(mi)封(feng)圈(quan)沿管(guan)壁密(mi)封(feng)。機械三(san)通(tong)(tong)分絲接和溝槽式兩(liang)種。

3、正(zheng)三(san)通指支(zhi)管與主管成(cheng)90度的三(san)通。

4、溝(gou)槽式連(lian)接方式廣泛用于(yu)建(jian)筑內的(de)消火栓(shuan)系統與(yu)噴淋系統。

支(zhi)(zhi)管(guan)(guan)(guan)(guan)接(jie)頭是指(zhi)在(zai)直(zhi)管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)道(dao)中部開孔后連(lian)(lian)(lian)接(jie)支(zhi)(zhi)管(guan)(guan)(guan)(guan)的鞍形拼合式連(lian)(lian)(lian)接(jie)件，分(fen)為機(ji)械(xie)三(san)通(tong)(tong)(tong)和機(ji)械(xie)四(si)通(tong)(tong)(tong)兩(liang)種類型(xing)。在(zai)設計(ji)圖紙上(shang)(shang)一般(ban)不(bu)會標注出溝(gou)槽(cao)三(san)通(tong)(tong)(tong)和機(ji)械(xie)三(san)通(tong)(tong)(tong)的。機(ji)械(xie)三(san)通(tong)(tong)(tong)或機(ji)械(xie)四(si)通(tong)(tong)(tong)與(yu)(yu)支(zhi)(zhi)管(guan)(guan)(guan)(guan)的連(lian)(lian)(lian)接(jie)方(fang)式有溝(gou)槽(cao)式連(lian)(lian)(lian)接(jie)和螺紋式連(lian)(lian)(lian)接(jie)兩(liang)種，當支(zhi)(zhi)管(guan)(guan)(guan)(guan)道(dao)小于(yu)DN50，且主(zhu)管(guan)(guan)(guan)(guan)道(dao)直(zhi)徑(jing)(jing)大于(yu)分(fen)支(zhi)(zhi)直(zhi)徑(jing)(jing)2倍時可用(yong)(yong)機(ji)械(xie)三(san)通(tong)(tong)(tong)（直(zhi)接(jie)在(zai)主(zhu)管(guan)(guan)(guan)(guan)道(dao)上(shang)(shang)開孔，噴淋支(zhi)(zhi)管(guan)(guan)(guan)(guan)與(yu)(yu)主(zhu)管(guan)(guan)(guan)(guan)連(lian)(lian)(lian)接(jie)用(yong)(yong)得多），其(qi)它情況得用(yong)(yong)溝(gou)槽(cao)三(san)通(tong)(tong)(tong)。

這里的(de)(de)(de)溝槽三(san)通(tong)(tong)(tong)就(jiu)是正(zheng)三(san)通(tong)(tong)(tong)（主支管中心(xin)線成直角），因為(wei)不像(xiang)UPVC管、鑄(zhu)鐵管除正(zheng)三(san)角還有Y三(san)通(tong)(tong)(tong)（斜三(san)通(tong)(tong)(tong)）、TY三(san)通(tong)(tong)(tong)。正(zheng)三(san)通(tong)(tong)(tong)與鍍(du)(du)鋅(xin)配件的(de)(de)(de)三(san)通(tong)(tong)(tong)叫法一樣，只是鍍(du)(du)鋅(xin)三(san)通(tong)(tong)(tong)是絲扣連接(jie)，而這里正(zheng)三(san)通(tong)(tong)(tong)是溝槽式連接(jie)，每個管道的(de)(de)(de)平(ping)口端環形溝槽由專門的(de)(de)(de)滾槽機加(jia)工(gong)成型，與管道連接(jie)需要3副相(xiang)應(ying)規(gui)格卡箍(gu)才能完成一個接(jie)頭，適(shi)合主干管的(de)(de)(de)連接(jie)。

至于機(ji)械三通(tong)主(zhu)(zhu)管(guan)(guan)上只(zhi)需用(yong)開(kai)孔機(ji)開(kai)孔無(wu)需開(kai)槽(cao)(cao)，而(er)支(zhi)管(guan)(guan)或開(kai)槽(cao)(cao)（溝槽(cao)(cao)式(shi)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)）或套絲(si)（螺紋(wen)式(shi)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)），適合(he)主(zhu)(zhu)支(zhi)管(guan)(guan)間的(de)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)（如噴(pen)(pen)淋系(xi)統的(de)噴(pen)(pen)淋支(zhi)管(guan)(guan)）。另外還有一(yi)(yi)種(zhong)(zhong)小機(ji)械三通(tong)，只(zhi)是把卡箍換成了(le)U型卡，這種(zhong)(zhong)小機(ji)械三通(tong)與支(zhi)管(guan)(guan)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)還是以螺紋(wen)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)為(wei)主(zhu)(zhu)，可能(neng)沒有溝槽(cao)(cao)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)形式(shi)。正(zheng)三通(tong)一(yi)(yi)般指(zhi)三個(ge)接(jie)(jie)(jie)(jie)(jie)管(guan)(guan)直(zhi)(zhi)徑(jing)(jing)相(xiang)同(tong)而(er)異徑(jing)(jing)三通(tong)則(ze)三個(ge)接(jie)(jie)(jie)(jie)(jie)管(guan)(guan)直(zhi)(zhi)徑(jing)(jing)不(bu)完全(quan)相(xiang)同(tong)。正(zheng)三通(tong)用(yong)于同(tong)一(yi)(yi)直(zhi)(zhi)徑(jing)(jing)管(guan)(guan)道連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)之用(yong)，異徑(jing)(jing)三通(tong)則(ze)用(yong)于不(bu)同(tong)直(zhi)(zhi)徑(jing)(jing)管(guan)(guan)道的(de)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)。機(ji)械三通(tong)連(lian)(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)的(de)支(zhi)管(guan)(guan)直(zhi)(zhi)徑(jing)(jing)絕不(bu)可能(neng)等(deng)于主(zhu)(zhu)管(guan)(guan)直(zhi)(zhi)徑(jing)(jing)。