通風管道焊接標準

1、施(shi)焊(han)(han)的焊(han)(han)工必須要(yao)有施(shi)焊(han)(han)合格證(zheng)，焊(han)(han)接(jie)等級應(ying)符合相應(ying)的焊(han)(han)接(jie)技術要(yao)求。

2、對接焊(han)(han)(han)縫的焊(han)(han)(han)接，焊(han)(han)(han)縫采用單(dan)面焊(han)(han)(han)、雙面成型工(gong)藝，DN≥600mm時，張(zhang)家口圓三通，應在管內進行封(feng)底焊(han)(han)(han)。

3、卷管組對焊(han)接，兩縱(zong)焊(han)縫間距應(ying)大(da)于100mm。

4、大(da)口徑的管道(dao)焊(han)接，采(cai)用雙人對稱焊(han)接。

5、卷焊管(guan)制作完畢后，應采用角鋼(gang)支撐，防止產生塑性(xing)變形(xing)。

6、通風管道焊接后必(bi)須對焊縫(feng)進行外觀(guan)檢查(cha)，表(biao)面(mian)不得有裂縫(feng)、氣孔、夾渣等缺陷(xian)，吸肉深度不得大于0.5mm。不合格者，不得出廠。

7、預制好的管段，應(ying)將內部(bu)清理干(gan)凈，封閉管口，防止雜(za)物進入。

8、管段預制完畢后要及(ji)時編號，不(bu)銹鋼(gang)圓三通安裝，妥善保管。根據(ju)實際情況分(fen)批運至現(xian)場。

通(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)管道(dao)(dao)(dao)(dao)(dao)材(cai)(cai)質的(de)選擇通(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)管道(dao)(dao)(dao)(dao)(dao)的(de)材(cai)(cai)質主要有(you)鋼板(ban)(ban)，金屬(shu)軟管、塑料(liao)(liao)和橡膠(jiao)軟管，纖維(wei)板(ban)(ban)、膠(jiao)合板(ban)(ban)、石膏(gao)板(ban)(ban)、硬(ying)聚塑料(liao)(liao)板(ban)(ban)，磚及混(hun)凝土等(deng)(deng)。鋼板(ban)(ban)是(shi)的(de)通(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)管道(dao)(dao)(dao)(dao)(dao)材(cai)(cai)質，主要是(shi)鋼板(ban)(ban)具有(you)耐(nai)腐蝕、耐(nai)高溫等(deng)(deng)特點，白鐵皮圓(yuan)三(san)通(tong)(tong)(tong)(tong)(tong)加(jia)工安裝，且(qie)加(jia)工制(zhi)(zhi)作和安裝都(dou)很(hen)方便。有(you)的(de)通(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)管道(dao)(dao)(dao)(dao)(dao)工藝上需要經常(chang)移(yi)動，該類通(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)管道(dao)(dao)(dao)(dao)(dao)需要金屬(shu)軟管、塑料(liao)(liao)和橡膠(jiao)軟管等(deng)(deng)柔性材(cai)(cai)料(liao)(liao)制(zhi)(zhi)成。硬(ying)聚塑料(liao)(liao)板(ban)(ban)表面光滑、加(jia)工方便，但不耐(nai)高溫，適用(yong)于(yu)有(you)腐蝕的(de)工業通(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)排氣系統。磚及混(hun)凝土等(deng)(deng)材(cai)(cai)質制(zhi)(zhi)作的(de)通(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)管道(dao)(dao)(dao)(dao)(dao)主要適合與建筑(zhu)等(deng)(deng)銜接(jie)的(de)場合，阻力(li)小，比較耐(nai)用(yong)。總之，通(tong)(tong)(tong)(tong)(tong)風(feng)(feng)(feng)管道(dao)(dao)(dao)(dao)(dao)的(de)材(cai)(cai)質要根(gen)據應(ying)用(yong)場合等(deng)(deng)條件(jian)綜合選擇。

通(tong)(tong)(tong)風(feng)(feng)(feng)機是量(liang)大面廣的耗能設(she)備，為了節省(sheng)通(tong)(tong)(tong)風(feng)(feng)(feng)機能耗減(jian)少運行(xing)成本，當前應當重(zhong)視(shi)通(tong)(tong)(tong)風(feng)(feng)(feng)空調(diao)(diao)系統(tong)優(you)(you)化技術，實(shi)現降(jiang)低(di)系統(tong)通(tong)(tong)(tong)風(feng)(feng)(feng)管(guan)道(dao)壓降(jiang)和(he)節耗，合理(li)(li)匹配和(he)優(you)(you)化運行(xing)調(diao)(diao)節。筆(bi)者從通(tong)(tong)(tong)風(feng)(feng)(feng)機售后(hou)服(fu)務現場(chang)發現，之前業主認(ren)定通(tong)(tong)(tong)風(feng)(feng)(feng)機質(zhi)量(liang)問題，到通(tong)(tong)(tong)風(feng)(feng)(feng)機使用現場(chang)調(diao)(diao)查，結果(guo)有相當部分是通(tong)(tong)(tong)風(feng)(feng)(feng)系統(tong)設(she)計、制造、安(an)裝不(bu)合理(li)(li)而導致通(tong)(tong)(tong)風(feng)(feng)(feng)機運行(xing)不(bu)正(zheng)常(chang)(chang)，通(tong)(tong)(tong)風(feng)(feng)(feng)管(guan)道(dao)圓三(san)通(tong)(tong)(tong)加工定做，出(chu)現通(tong)(tong)(tong)風(feng)(feng)(feng)機性能達不(bu)到設(she)計要求，振動噪(zao)聲超(chao)標(biao)，葉片斷裂等問題，通(tong)(tong)(tong)風(feng)(feng)(feng)系統(tong)經合理(li)(li)改造后(hou)，通(tong)(tong)(tong)風(feng)(feng)(feng)機運行(xing)正(zheng)常(chang)(chang)了。因(yin)此，通(tong)(tong)(tong)風(feng)(feng)(feng)系統(tong)是否合理(li)(li)對通(tong)(tong)(tong)風(feng)(feng)(feng)機能否正(zheng)常(chang)(chang)運行(xing)影(ying)響很大，本文對通(tong)(tong)(tong)風(feng)(feng)(feng)空調(diao)(diao)系統(tong)通(tong)(tong)(tong)風(feng)(feng)(feng)管(guan)道(dao)設(she)計、制作和(he)安(an)裝常(chang)(chang)見(jian)問題提出(chu)探討意見(jian)。