【機(ji)械三通(tong)】什(shen)(shen)么(me)是機(ji)械三通(tong) 機(ji)械三通(tong)和溝槽三通(tong)有什(shen)(shen)么(me)區別

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機械三通

機械三通與普通三通作用(yong)一致。機(ji)(ji)械三通分為溝槽機(ji)(ji)械三通和螺紋機(ji)(ji)械三通。它可用(yong)于直接在(zai)鋼管上接出支(zhi)管，在(zai)消(xiao)防管道及噴淋(lin)管道的安裝(zhuang)上有較多應用(yong)。在(zai)需要分流(liu)或(huo)合流(liu)的時候可以采用(yong)機(ji)(ji)械三通。

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(gang)管(guan)上用開(kai)(kai)孔機開(kai)(kai)孔，然后將機械三(san)通(tong)卡入孔洞(dong)，孔四周由密封圈(quan)沿管(guan)壁密封。機械三(san)通(tong)分絲(si)接和(he)溝槽(cao)式兩種。機械三(san)通(tong)連接時，應檢查機械三(san)通(tong)與孔洞(dong)的間(jian)隙，各部位(wei)應均勻，然后再緊固(gu)到(dao)位(wei)；機械三(san)通(tong)開(kai)(kai)孔間(jian)距不應小于1m。

機械三通與溝槽三通區別

1、機(ji)械三通可用于(yu)直接在鋼管(guan)上接出支管(guan)。

2、首先在鋼管上用(yong)開孔(kong)機(ji)開孔(kong)，然后將機(ji)械(xie)三(san)通卡入孔(kong)洞(dong)，孔(kong)四周由密封(feng)圈沿(yan)管壁密封(feng)。機(ji)械(xie)三(san)通分(fen)絲接和溝(gou)槽(cao)式兩種。

3、正(zheng)三(san)通指支管與主管成90度的三(san)通。

4、溝槽式連(lian)接(jie)方式廣(guang)泛用于建(jian)筑內的(de)消火栓系(xi)(xi)統與噴淋系(xi)(xi)統。

支(zhi)管(guan)(guan)(guan)(guan)(guan)接(jie)(jie)頭是指在(zai)直(zhi)管(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)道中部(bu)開孔(kong)后(hou)連(lian)(lian)接(jie)(jie)支(zhi)管(guan)(guan)(guan)(guan)(guan)的(de)鞍形拼合式連(lian)(lian)接(jie)(jie)件，分為(wei)機械(xie)(xie)三通(tong)(tong)和機械(xie)(xie)四通(tong)(tong)兩種(zhong)(zhong)類型。在(zai)設(she)計圖紙(zhi)上一(yi)般不會(hui)標注出(chu)溝(gou)槽三通(tong)(tong)和機械(xie)(xie)三通(tong)(tong)的(de)。機械(xie)(xie)三通(tong)(tong)或機械(xie)(xie)四通(tong)(tong)與支(zhi)管(guan)(guan)(guan)(guan)(guan)的(de)連(lian)(lian)接(jie)(jie)方(fang)式有溝(gou)槽式連(lian)(lian)接(jie)(jie)和螺(luo)紋式連(lian)(lian)接(jie)(jie)兩種(zhong)(zhong)，當(dang)支(zhi)管(guan)(guan)(guan)(guan)(guan)道小于DN50，且主(zhu)管(guan)(guan)(guan)(guan)(guan)道直(zhi)徑大于分支(zhi)直(zhi)徑2倍時可用(yong)機械(xie)(xie)三通(tong)(tong)（直(zhi)接(jie)(jie)在(zai)主(zhu)管(guan)(guan)(guan)(guan)(guan)道上開孔(kong)，噴淋支(zhi)管(guan)(guan)(guan)(guan)(guan)與主(zhu)管(guan)(guan)(guan)(guan)(guan)連(lian)(lian)接(jie)(jie)用(yong)得多），其它情況(kuang)得用(yong)溝(gou)槽三通(tong)(tong)。

這(zhe)里的(de)(de)溝(gou)槽三通(tong)(tong)(tong)(tong)就是正(zheng)三通(tong)(tong)(tong)(tong)（主支管中(zhong)心(xin)線成直(zhi)角），因為不像UPVC管、鑄(zhu)鐵(tie)管除正(zheng)三角還有Y三通(tong)(tong)(tong)(tong)（斜三通(tong)(tong)(tong)(tong)）、TY三通(tong)(tong)(tong)(tong)。正(zheng)三通(tong)(tong)(tong)(tong)與(yu)鍍鋅配件的(de)(de)三通(tong)(tong)(tong)(tong)叫法一樣，只是鍍鋅三通(tong)(tong)(tong)(tong)是絲扣連(lian)接(jie)(jie)，而這(zhe)里正(zheng)三通(tong)(tong)(tong)(tong)是溝(gou)槽式連(lian)接(jie)(jie)，每(mei)個管道的(de)(de)平口端環(huan)形(xing)溝(gou)槽由專門的(de)(de)滾槽機加工(gong)成型，與(yu)管道連(lian)接(jie)(jie)需要3副(fu)相(xiang)應規格卡箍才能完成一個接(jie)(jie)頭，適合主干管的(de)(de)連(lian)接(jie)(jie)。

至(zhi)于(yu)機械(xie)三(san)(san)通(tong)主(zhu)管(guan)(guan)(guan)上只需用開孔機開孔無(wu)需開槽，而支(zhi)管(guan)(guan)(guan)或開槽（溝槽式連(lian)接(jie)(jie)(jie)）或套(tao)絲（螺紋(wen)式連(lian)接(jie)(jie)(jie)），適合主(zhu)支(zhi)管(guan)(guan)(guan)間的(de)連(lian)接(jie)(jie)(jie)（如噴淋系統(tong)的(de)噴淋支(zhi)管(guan)(guan)(guan)）。另外還有(you)一種小機械(xie)三(san)(san)通(tong)，只是把卡箍換成了U型卡，這種小機械(xie)三(san)(san)通(tong)與支(zhi)管(guan)(guan)(guan)連(lian)接(jie)(jie)(jie)還是以螺紋(wen)連(lian)接(jie)(jie)(jie)為主(zhu)，可能沒有(you)溝槽連(lian)接(jie)(jie)(jie)形式。正(zheng)三(san)(san)通(tong)一般指三(san)(san)個接(jie)(jie)(jie)管(guan)(guan)(guan)直徑(jing)(jing)相同(tong)而異(yi)徑(jing)(jing)三(san)(san)通(tong)則(ze)三(san)(san)個接(jie)(jie)(jie)管(guan)(guan)(guan)直徑(jing)(jing)不完全相同(tong)。正(zheng)三(san)(san)通(tong)用于(yu)同(tong)一直徑(jing)(jing)管(guan)(guan)(guan)道(dao)(dao)連(lian)接(jie)(jie)(jie)之用，異(yi)徑(jing)(jing)三(san)(san)通(tong)則(ze)用于(yu)不同(tong)直徑(jing)(jing)管(guan)(guan)(guan)道(dao)(dao)的(de)連(lian)接(jie)(jie)(jie)。機械(xie)三(san)(san)通(tong)連(lian)接(jie)(jie)(jie)的(de)支(zhi)管(guan)(guan)(guan)直徑(jing)(jing)絕不可能等于(yu)主(zhu)管(guan)(guan)(guan)直徑(jing)(jing)。