溝槽管道的安裝工藝(7)(1)

1、溝槽管道的安裝工藝a.管道安裝機(jī)具準(zhǔn)備：選擇符合要求滾槽機(jī)、開孔機(jī)和切管機(jī)； 管道準(zhǔn)備：垂直切割管道，清潔和加工管端凹槽，加工時小心管道爆裂，和出現(xiàn)鋒利邊沿，鋒利邊沿可能損壞密封圈，凹槽寬度和深度，必須符合凹槽技術(shù)標(biāo)準(zhǔn)。檢查和潤滑密封圈：檢查密封圈，確保密封圈規(guī)格正確。在密封圈外部和內(nèi)部密封唇上，涂薄薄一層潤滑劑。應(yīng)小心不要將顆粒雜質(zhì)黏附在密封圈表面。使用潤滑劑作為密封圈的配件。優(yōu)良的密封圈潤滑劑是防止密封圈磨損和可能損傷的基礎(chǔ)。（如下圖）密封圈安裝滑動密封圈到管端，確保密封唇不要懸垂在管端。（如下圖）密封圈定位將密封圈在靠攏的兩側(cè)管端上定位后，把密封圈拉到兩側(cè)管端凹槽的中心位置。密封圈不應(yīng)進(jìn)

2、入管道凹槽。（如下圖）安裝連接器外殼把外殼合在密封圈上，使殼體卡口咬合在管道凹槽內(nèi)，插入螺栓，用手?jǐn)Q緊螺帽。（如下圖）擰緊螺帽交替、均勻地?cái)Q緊兩側(cè)螺帽，直到螺栓底座金屬面接觸，螺栓收緊。b.機(jī)械三通、機(jī)械四通安裝 先從外殼上去掉一個螺栓，松開另一螺帽直到與螺栓端頭平，將下殼旋離上殼約90度，把上殼出口部分放在管口開口處對中并與孔成一直線，在沿管端旋轉(zhuǎn)下殼（如是機(jī)械四通,下殼方法與上殼相同）使上下兩塊合攏。c.法蘭片安裝安裝法蘭片: 先松開兩側(cè)螺絲，將法蘭兩塊分開，分別將兩塊法蘭片的環(huán)形鍵部分裝入開槽管端凹槽里，再把兩側(cè)螺絲插入擰緊，調(diào)節(jié)兩側(cè)間隙相近。 安裝密封圈 將密封圈"C&quo

3、t;形開口處背對法蘭，沿管端方向推入法蘭內(nèi)徑凹槽內(nèi)即可 d.選擇符合要求的橡膠密封圈附（表一）e.管外徑與溝槽加工尺寸附（表二）f.管道支吊架安裝附（表三）g.管道加工尺寸附（表五）h.質(zhì)量要求管道安裝時應(yīng)考慮管間隙量，也就是鋼管的膨脹量。管道安裝后要進(jìn)行試壓檢查是否泄漏。如有泄漏其原因如下：螺栓沒擰緊，卡箍接觸面有間隙。溝槽加工深度應(yīng)符合要求。密封面不應(yīng)有雜質(zhì)。鋼管端部密封面有傷痕或溝線狀傷痕不能安裝。密封圈不能有啃圈。鋼管外徑不能超差。加工后鋼管端部至溝槽距離不能小。安裝不符合要求，超過規(guī)定的轉(zhuǎn)角。鋼管開孔引分支.在管路中引出分支,首先必須在管道開孔,孔必須開在管道中心線上并且尺寸要正確,

4、開孔要用專用工具.附（表四）孔開好后檢查孔周圍16mm范圍的管表面清潔、光滑、無污物、皮屑、凸出物方可安裝。表一 橡膠密封圈的選擇橡膠原料應(yīng)用范圍橡膠圈色標(biāo)記天然橡膠用于-35+80的水和無油氣體黑色乙丙橡膠用用于-30+100一般介質(zhì)、耐老化綠色丁晴橡膠用于-40+120的油、油霧和煤氣橙色鹵化丁橡膠不含油、含有多種稀酸的水和氣體棕色氯橡膠用于-20-200以下化學(xué)物品藍(lán)色白色丁晴橡膠不含碳黑、可用于食品白色氯丁橡膠一定范圍內(nèi)的潤滑油及化學(xué)品黃色有機(jī)硅橡膠用于-40-250以下的不帶烴類的空氣紅色表二 管外徑與溝槽加工尺寸表 單位：mm鋼管外徑尺寸溝槽至管徑尺寸溝槽寬度溝槽外徑（C）標(biāo)準(zhǔn)最大

5、最小標(biāo)準(zhǔn)最大最小標(biāo)準(zhǔn)最大最大最大最小42.242.641.815.916.615.17.147.906.3838.9938.6148.348.847.815.916.615.17.147.906.3845.0944.7060.360.959.715.916.615.18.749.507.9857.1556.7776.176.975.315.916.615.18.749.507.9872.2671.8088.989.788.115.916.615.18.749.507.9884.9484.48108.0108.8107.215.916.615.18.749.507.98103.70102.941

6、14.3115.4113.515.916.615.18.749.507.98110.10109.57139.7141.1138.915.916.615.18.749.507.98135.48134.97159.0160.4158.015.916.615.18.749.507.98153.41152.65165.1166.7164.315.916.615.18.749.507.98160.78160.22168.3169.9167.519.116.615.18.749.507.98163.96163.40219.1220.7218.319.119.818.311.9112.6711.15213.

7、70212.98273.0274.6272.219.119.818.311.9112.6711.15267.60266.93325.0326.6324.219.119.818.311.9112.6711.15318.29317.53表三 管道支吊架安裝公稱管徑D.N.用剛性接頭每根管吊架數(shù)用撓性接頭每根管吊架數(shù)對6m長管對9m長管對6m長管對9m長管502334652323802323100232312523231502323200232325023233002323表四 管道分支開孔尺寸表主管外徑（mm）支管外徑（mm）開孔直徑(mm)0142262602422126034826260448

8、26260557.0：60.348.0380657.0：60.342.3380757.0：60.333.5380857.0：60.326.8380976.148.0441076.142.3441176.133.5381276.126.8381388.960.0641488.948.0511588.942.3511688.933.5441788.926.84418108.0（75.5）：76.17019108.060.37020108.048.05121108.042.35122108.033.55123108.026.83824114.0（88.5）：88.98925114.0（75.5）：7

9、6.17026114.060.37027114.048.05128114.042.35129114.033.55130114.026.83831140.0114.011432140.0（88.5）：88.98933140.0（75.5）：76.17034140.060.37035140.048.05136140.042.35137140.033.55138165.0114.011439165.0（88.5）：88.98940165.0（75.5）：76.17041165.060.37042165.048.05143165.042.35144165.033.55145159.0108.01144

10、6159.060.370英制公稱標(biāo)準(zhǔn)上公差下公差標(biāo)準(zhǔn)上公差下公差標(biāo)準(zhǔn)上公差下公差最大最小直徑2/4DN2026.72726.515.8816.6415.127.147.96.3823.8323.441.421.6529.21DN2533.433.733.115.8816.6415.127.147.96.3830.2329.851.61.6536.31 1/4DN3242.242.641.815.8816.6415.127.147.96.3838.9938.611.61.654511/2DN4048.348.847.815.8816.6415.127.147.96.3845.0944.71.61

11、.6551.12DN5060.360.959.715.8816.6415.128.749.57.9857.1556.771.61.65632 1/27373.772.315.8816.6415.128.749.57.9869.0968.631.982.1175.72 3/4DN7076.176.975.315.8816.6415.128.749.57.9872.2671.81.982.1178.73DN8088.989.788.115.8816.6415.128.749.57.9884.9484.481.982.1191.4101.6102.6100.815.8816.6415.128.749

12、.57.9897.3896.872.112.11104.14DN100114.3115.4113.515.8816.6415.128.749.57.98110.08109.572.112.11116.8127128.3126.215.8816.6415.128.749.57.98112.78122.272.112.41129.5139.7141.1138.915.8816.6415.128.749.57.98135.48134.972.112.77142.25DN125141.3142.7140.515.8816.6415.128.749.57.98137.03136.472.132.7714

13、3.8152.4153.8151.615.8816.6415.128.749.57.98148.08147.522.162.77154.96DN150158.8160.415815.8816.6415.128.749.57.98153.21152.452.162.77161.36DN150165.1166.7164.315.8816.6415.128.749.57.98160.78160.222.162.77167.6168.3169.9167.515.8816.6415.128.749.57.98163.96163.42.162.77170.9203.2204.8202.419.0519.8118.2911.9112.6711.15198.53197.892.342.77207.58DN200219.1220.7218.319.0519.8118.2911.9112.6711.15214.4213.762.342.77223