【機械(xie)三(san)通(tong)(tong)】什(shen)么是機械(xie)三(san)通(tong)(tong) 機械(xie)三(san)通(tong)(tong)和(he)溝(gou)槽(cao)三(san)通(tong)(tong)有什(shen)么區別(bie)

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機械三通

機械三通與普通三通作用(yong)(yong)一致。機(ji)械(xie)三通(tong)(tong)(tong)分為溝槽(cao)機(ji)械(xie)三通(tong)(tong)(tong)和螺(luo)紋機(ji)械(xie)三通(tong)(tong)(tong)。它可用(yong)(yong)于直接(jie)在(zai)(zai)鋼管上(shang)接(jie)出支管，在(zai)(zai)消防管道(dao)及噴淋(lin)管道(dao)的安(an)裝上(shang)有較(jiao)多應用(yong)(yong)。在(zai)(zai)需(xu)要分流或合流的時候可以采(cai)用(yong)(yong)機(ji)械(xie)三通(tong)(tong)(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(gang)管上(shang)用開(kai)孔(kong)機(ji)開(kai)孔(kong)，然后將機(ji)械(xie)(xie)(xie)三(san)通(tong)卡入(ru)孔(kong)洞，孔(kong)四周由密封(feng)圈沿(yan)管壁密封(feng)。機(ji)械(xie)(xie)(xie)三(san)通(tong)分(fen)絲接和(he)溝(gou)槽式兩種。機(ji)械(xie)(xie)(xie)三(san)通(tong)連(lian)接時，應(ying)檢查(cha)機(ji)械(xie)(xie)(xie)三(san)通(tong)與孔(kong)洞的間隙，各部(bu)位應(ying)均勻，然后再緊固到(dao)位；機(ji)械(xie)(xie)(xie)三(san)通(tong)開(kai)孔(kong)間距不應(ying)小于1m。

機械三通與溝槽三通區別

1、機械三通可(ke)用于直接在(zai)鋼管上接出支管。

2、首先在鋼管上用(yong)開(kai)孔(kong)機開(kai)孔(kong)，然后將機械(xie)三(san)通卡入孔(kong)洞，孔(kong)四周由密封(feng)圈沿管壁密封(feng)。機械(xie)三(san)通分(fen)絲接和(he)溝槽式兩種。

3、正(zheng)三(san)通指支管與主管成90度的(de)三(san)通。

4、溝槽式(shi)連接(jie)方式(shi)廣(guang)泛用于建筑內的消火栓系統(tong)與噴淋系統(tong)。

支管(guan)(guan)接(jie)頭是指在直(zhi)管(guan)(guan)管(guan)(guan)道中部(bu)開孔(kong)后(hou)連(lian)接(jie)支管(guan)(guan)的鞍(an)形拼合式(shi)連(lian)接(jie)件，分為機(ji)械三通(tong)(tong)和機(ji)械四通(tong)(tong)兩種類型(xing)。在設計圖紙上(shang)一般(ban)不(bu)會標注出溝(gou)(gou)槽(cao)三通(tong)(tong)和機(ji)械三通(tong)(tong)的。機(ji)械三通(tong)(tong)或機(ji)械四通(tong)(tong)與(yu)支管(guan)(guan)的連(lian)接(jie)方(fang)式(shi)有溝(gou)(gou)槽(cao)式(shi)連(lian)接(jie)和螺紋式(shi)連(lian)接(jie)兩種，當支管(guan)(guan)道小于DN50，且主管(guan)(guan)道直(zhi)徑大(da)于分支直(zhi)徑2倍時(shi)可用機(ji)械三通(tong)(tong)（直(zhi)接(jie)在主管(guan)(guan)道上(shang)開孔(kong)，噴淋支管(guan)(guan)與(yu)主管(guan)(guan)連(lian)接(jie)用得多），其它情況得用溝(gou)(gou)槽(cao)三通(tong)(tong)。

這里(li)的溝(gou)槽三(san)(san)(san)通(tong)(tong)(tong)(tong)就(jiu)是正三(san)(san)(san)通(tong)(tong)(tong)(tong)（主支管(guan)中心線成(cheng)(cheng)直角），因(yin)為不(bu)像UPVC管(guan)、鑄鐵管(guan)除正三(san)(san)(san)角還有Y三(san)(san)(san)通(tong)(tong)(tong)(tong)（斜三(san)(san)(san)通(tong)(tong)(tong)(tong)）、TY三(san)(san)(san)通(tong)(tong)(tong)(tong)。正三(san)(san)(san)通(tong)(tong)(tong)(tong)與(yu)鍍鋅配(pei)件(jian)的三(san)(san)(san)通(tong)(tong)(tong)(tong)叫法(fa)一樣，只是鍍鋅三(san)(san)(san)通(tong)(tong)(tong)(tong)是絲扣連(lian)(lian)接，而這里(li)正三(san)(san)(san)通(tong)(tong)(tong)(tong)是溝(gou)槽式連(lian)(lian)接，每個(ge)管(guan)道(dao)的平口端環(huan)形(xing)溝(gou)槽由專門的滾槽機加(jia)工成(cheng)(cheng)型，與(yu)管(guan)道(dao)連(lian)(lian)接需要3副相應規格卡(ka)箍才(cai)能完成(cheng)(cheng)一個(ge)接頭，適合主干管(guan)的連(lian)(lian)接。

至于機(ji)(ji)械(xie)三(san)通(tong)(tong)主(zhu)(zhu)管上只(zhi)需(xu)用(yong)開孔機(ji)(ji)開孔無(wu)需(xu)開槽(cao)，而支管或開槽(cao)（溝槽(cao)式連(lian)(lian)接(jie)(jie)(jie)(jie)）或套(tao)絲（螺(luo)紋(wen)式連(lian)(lian)接(jie)(jie)(jie)(jie)），適合主(zhu)(zhu)支管間的連(lian)(lian)接(jie)(jie)(jie)(jie)（如噴(pen)淋(lin)系統的噴(pen)淋(lin)支管）。另外還有一(yi)種小(xiao)機(ji)(ji)械(xie)三(san)通(tong)(tong)，只(zhi)是(shi)把(ba)卡(ka)箍換(huan)成了U型(xing)卡(ka)，這(zhe)種小(xiao)機(ji)(ji)械(xie)三(san)通(tong)(tong)與支管連(lian)(lian)接(jie)(jie)(jie)(jie)還是(shi)以螺(luo)紋(wen)連(lian)(lian)接(jie)(jie)(jie)(jie)為主(zhu)(zhu)，可能沒有溝槽(cao)連(lian)(lian)接(jie)(jie)(jie)(jie)形式。正三(san)通(tong)(tong)一(yi)般指三(san)個接(jie)(jie)(jie)(jie)管直徑相(xiang)(xiang)同(tong)(tong)而異徑三(san)通(tong)(tong)則(ze)三(san)個接(jie)(jie)(jie)(jie)管直徑不完全相(xiang)(xiang)同(tong)(tong)。正三(san)通(tong)(tong)用(yong)于同(tong)(tong)一(yi)直徑管道(dao)連(lian)(lian)接(jie)(jie)(jie)(jie)之用(yong)，異徑三(san)通(tong)(tong)則(ze)用(yong)于不同(tong)(tong)直徑管道(dao)的連(lian)(lian)接(jie)(jie)(jie)(jie)。機(ji)(ji)械(xie)三(san)通(tong)(tong)連(lian)(lian)接(jie)(jie)(jie)(jie)的支管直徑絕(jue)不可能等于主(zhu)(zhu)管直徑。