【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(cao)三(san)(san)通(tong)有什么區別

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機械三通

機械三通與普通三通作用一(yi)致(zhi)。機(ji)械三通(tong)分(fen)為溝槽機(ji)械三通(tong)和螺紋機(ji)械三通(tong)。它(ta)可(ke)用于直接在(zai)(zai)鋼管(guan)上接出支管(guan)，在(zai)(zai)消防管(guan)道(dao)及噴淋(lin)管(guan)道(dao)的安裝(zhuang)上有較多應用。在(zai)(zai)需要(yao)分(fen)流或合流的時(shi)候可(ke)以(yi)采用機(ji)械三通(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。首先在鋼管上用開(kai)孔(kong)機(ji)開(kai)孔(kong)，然后(hou)將機(ji)械三(san)通(tong)卡入孔(kong)洞，孔(kong)四(si)周由密封圈沿管壁密封。機(ji)械三(san)通(tong)分絲(si)接和(he)溝槽式兩種。機(ji)械三(san)通(tong)連接時(shi)，應檢查機(ji)械三(san)通(tong)與孔(kong)洞的間隙，各部位應均勻，然后(hou)再緊固到(dao)位；機(ji)械三(san)通(tong)開(kai)孔(kong)間距不應小(xiao)于1m。

機械三通與溝槽三通區別

1、機械三(san)通可用于直(zhi)接在鋼管上接出支管。

2、首先在鋼管上用開(kai)孔(kong)機(ji)(ji)開(kai)孔(kong)，然后(hou)將機(ji)(ji)械(xie)三(san)(san)通卡(ka)入(ru)孔(kong)洞，孔(kong)四周由(you)密封圈沿管壁密封。機(ji)(ji)械(xie)三(san)(san)通分絲接和溝槽式兩種(zhong)。

3、正三通(tong)指支管與主管成90度的三通(tong)。

4、溝槽式連接方式廣泛(fan)用(yong)于建筑內的消(xiao)火栓(shuan)系統與噴淋系統。

支(zhi)管(guan)(guan)接(jie)(jie)頭是指在(zai)直(zhi)(zhi)(zhi)管(guan)(guan)管(guan)(guan)道中(zhong)部開(kai)孔后連(lian)接(jie)(jie)支(zhi)管(guan)(guan)的鞍(an)形拼(pin)合式連(lian)接(jie)(jie)件，分為(wei)機(ji)械(xie)三(san)(san)通(tong)和機(ji)械(xie)四通(tong)兩(liang)種類型。在(zai)設計圖(tu)紙(zhi)上一般(ban)不會標注出溝(gou)槽三(san)(san)通(tong)和機(ji)械(xie)三(san)(san)通(tong)的。機(ji)械(xie)三(san)(san)通(tong)或機(ji)械(xie)四通(tong)與支(zhi)管(guan)(guan)的連(lian)接(jie)(jie)方式有溝(gou)槽式連(lian)接(jie)(jie)和螺紋(wen)式連(lian)接(jie)(jie)兩(liang)種，當支(zhi)管(guan)(guan)道小(xiao)于(yu)(yu)DN50，且主(zhu)管(guan)(guan)道直(zhi)(zhi)(zhi)徑大于(yu)(yu)分支(zhi)直(zhi)(zhi)(zhi)徑2倍時(shi)可用(yong)機(ji)械(xie)三(san)(san)通(tong)（直(zhi)(zhi)(zhi)接(jie)(jie)在(zai)主(zhu)管(guan)(guan)道上開(kai)孔，噴淋支(zhi)管(guan)(guan)與主(zhu)管(guan)(guan)連(lian)接(jie)(jie)用(yong)得多），其它(ta)情況得用(yong)溝(gou)槽三(san)(san)通(tong)。

這里的溝(gou)槽(cao)三(san)通(tong)(tong)就(jiu)是正三(san)通(tong)(tong)（主支管中心線(xian)成直角），因為(wei)不(bu)像UPVC管、鑄鐵管除正三(san)角還有Y三(san)通(tong)(tong)（斜三(san)通(tong)(tong)）、TY三(san)通(tong)(tong)。正三(san)通(tong)(tong)與(yu)(yu)鍍鋅配件(jian)的三(san)通(tong)(tong)叫法一樣，只是鍍鋅三(san)通(tong)(tong)是絲扣連(lian)(lian)接，而這里正三(san)通(tong)(tong)是溝(gou)槽(cao)式連(lian)(lian)接，每個管道的平口端(duan)環形溝(gou)槽(cao)由專門(men)的滾槽(cao)機加工成型，與(yu)(yu)管道連(lian)(lian)接需(xu)要3副相(xiang)應規格卡箍才能完成一個接頭，適合主干管的連(lian)(lian)接。

至(zhi)于(yu)機(ji)械(xie)(xie)三(san)(san)通主管(guan)(guan)(guan)上只(zhi)需(xu)用開(kai)孔機(ji)開(kai)孔無需(xu)開(kai)槽，而支(zhi)管(guan)(guan)(guan)或開(kai)槽（溝(gou)槽式(shi)(shi)連(lian)(lian)(lian)接(jie)(jie)）或套絲（螺紋式(shi)(shi)連(lian)(lian)(lian)接(jie)(jie)），適合(he)主支(zhi)管(guan)(guan)(guan)間的(de)連(lian)(lian)(lian)接(jie)(jie)（如噴(pen)淋(lin)系(xi)統的(de)噴(pen)淋(lin)支(zhi)管(guan)(guan)(guan)）。另外還(huan)有一(yi)種小(xiao)機(ji)械(xie)(xie)三(san)(san)通，只(zhi)是(shi)把卡箍(gu)換成了(le)U型卡，這種小(xiao)機(ji)械(xie)(xie)三(san)(san)通與支(zhi)管(guan)(guan)(guan)連(lian)(lian)(lian)接(jie)(jie)還(huan)是(shi)以螺紋連(lian)(lian)(lian)接(jie)(jie)為(wei)主，可能沒有溝(gou)槽連(lian)(lian)(lian)接(jie)(jie)形式(shi)(shi)。正三(san)(san)通一(yi)般(ban)指(zhi)三(san)(san)個接(jie)(jie)管(guan)(guan)(guan)直(zhi)徑(jing)相同(tong)(tong)而異徑(jing)三(san)(san)通則三(san)(san)個接(jie)(jie)管(guan)(guan)(guan)直(zhi)徑(jing)不完(wan)全相同(tong)(tong)。正三(san)(san)通用于(yu)同(tong)(tong)一(yi)直(zhi)徑(jing)管(guan)(guan)(guan)道連(lian)(lian)(lian)接(jie)(jie)之(zhi)用，異徑(jing)三(san)(san)通則用于(yu)不同(tong)(tong)直(zhi)徑(jing)管(guan)(guan)(guan)道的(de)連(lian)(lian)(lian)接(jie)(jie)。機(ji)械(xie)(xie)三(san)(san)通連(lian)(lian)(lian)接(jie)(jie)的(de)支(zhi)管(guan)(guan)(guan)直(zhi)徑(jing)絕不可能等于(yu)主管(guan)(guan)(guan)直(zhi)徑(jing)。