管道配件
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煤礦管道工程
人(ren)(ren)(ren)孔(kong)(kong)分(fen)為緊急泄壓人(ren)(ren)(ren)孔(kong)(kong)、防爆阻(zu)火呼吸人(ren)(ren)(ren)孔(kong)(kong)、罐(guan)(guan)(guan)頂人(ren)(ren)(ren)孔(kong)(kong)、罐(guan)(guan)(guan)壁(bi)人(ren)(ren)(ren)孔(kong)(kong)和帶芯人(ren)(ren)(ren)孔(kong)(kong)人(ren)(ren)(ren)孔(kong)(kong)已(yi)有成型產品，直徑(jing)(jing)通(tong)常為600mm。人(ren)(ren)(ren)孔(kong)(kong)中(zhong)(zhong)心距地板一般為750mm。便(bian)于工作人(ren)(ren)(ren)員在(zai)安裝、清洗(xi)(xi)、維護時進(jin)出油(you)(you)(you)罐(guan)(guan)(guan)或(huo)(huo)通(tong)風。非金(jin)屬油(you)(you)(you)罐(guan)(guan)(guan)的(de)人(ren)(ren)(ren)孔(kong)(kong)設(she)在(zai)罐(guan)(guan)(guan)頂上(shang)，金(jin)屬油(you)(you)(you)罐(guan)(guan)(guan)的(de)人(ren)(ren)(ren)孔(kong)(kong)設(she)在(zai)罐(guan)(guan)(guan)壁(bi)下圈板上(shang)。大都為直徑(jing)(jing)600mm的(de)圓孔(kong)(kong)，其中(zhong)(zhong)心距底板750mm，為油(you)(you)(you)罐(guan)(guan)(guan)清洗(xi)(xi)或(huo)(huo)維修人(ren)(ren)(ren)員
人(ren)(ren)(ren)(ren)孔(kong)分為緊急泄壓人(ren)(ren)(ren)(ren)孔(kong)、防爆(bao)阻(zu)火呼(hu)吸人(ren)(ren)(ren)(ren)孔(kong)、罐頂人(ren)(ren)(ren)(ren)孔(kong)、罐壁(bi)人(ren)(ren)(ren)(ren)孔(kong)和(he)帶芯人(ren)(ren)(ren)(ren)孔(kong)人(ren)(ren)(ren)(ren)孔(kong)已(yi)有成型產品(pin)，直(zhi)徑通(tong)(tong)常為600mm。人(ren)(ren)(ren)(ren)孔(kong)中心距地板一(yi)般(ban)為750mm。便于(yu)工(gong)作人(ren)(ren)(ren)(ren)員在安裝、清洗、維護時進出油罐或通(tong)(tong)風。
非金(jin)屬油(you)(you)罐(guan)的(de)(de)(de)人孔(kong)(kong)(kong)設(she)(she)(she)在(zai)罐(guan)頂上(shang)(shang)，金(jin)屬油(you)(you)罐(guan)的(de)(de)(de)人孔(kong)(kong)(kong)設(she)(she)(she)在(zai)罐(guan)壁下圈板上(shang)(shang)。大都為直徑600mm的(de)(de)(de)圓孔(kong)(kong)(kong)，其中心距底板750mm，為油(you)(you)罐(guan)清洗或維修(xiu)(xiu)(xiu)人員進(jin)(jin)出油(you)(you)罐(guan)用(yong)，又稱作道(dao)門(men)。檢修(xiu)(xiu)(xiu)清理(li)油(you)(you)罐(guan)時(shi)刻利(li)用(yong)人孔(kong)(kong)(kong)進(jin)(jin)行采光(guang)和通風。立式油(you)(you)罐(guan)的(de)(de)(de)容量(liang)在(zai)5000m3以(yi)下時(shi)設(she)(she)(she)1~2個(ge)(ge)(ge)人孔(kong)(kong)(kong)，5000m3以(yi)上(shang)(shang)的(de)(de)(de)設(she)(she)(she)2個(ge)(ge)(ge)人孔(kong)(kong)(kong)。人孔(kong)(kong)(kong)的(de)(de)(de)安(an)裝應(ying)與(yu)進(jin)(jin)出油(you)(you)管(guan)線相隔不大于(yu)90°。當(dang)只設(she)(she)(she)一(yi)個(ge)(ge)(ge)人孔(kong)(kong)(kong)時(shi)，應(ying)將其置于(yu)罐(guan)頂透光(guang)孔(kong)(kong)(kong)的(de)(de)(de)對面;當(dang)設(she)(she)(she)2個(ge)(ge)(ge)人孔(kong)(kong)(kong)時(shi)，其中一(yi)個(ge)(ge)(ge)設(she)(she)(she)在(zai)透光(guang)孔(kong)(kong)(kong)的(de)(de)(de)對面，另一(yi)個(ge)(ge)(ge)應(ying)至(zhi)少與(yu)第 一(yi)個(ge)(ge)(ge)人孔(kong)(kong)(kong)相隔90°。人孔(kong)(kong)(kong)應(ying)有(you)一(yi)個(ge)(ge)(ge)設(she)(she)(she)在(zai)進(jin)(jin)出油(you)(you)管(guan)右側附近，并盡量(liang)使人孔(kong)(kong)(kong)正對罐(guan)室密(mi)閉門(men)，以(yi)便人員進(jin)(jin)出、維修(xiu)(xiu)(xiu)油(you)(you)罐(guan)和通風接(jie)管(guan)用(yong)。
由于(yu)人孔安裝在(zai)油罐的下層體(ti)圈(quan)上，防滲漏(lou)就顯得特別重要(yao)。要(yao)求(qiu)兩(liang)法(fa)蘭結合面(mian)必須保(bao)(bao)證其平直度，無飄扭現象。加(jia)強板(ban)和(he)法(fa)蘭應盡量在(zai)整塊(kuai)鋼板(ban)上切割而不拼接。法(fa)蘭和(he)蓋(gai)板(ban)上加(jia)工有(you)密(mi)封(feng)圈(quan)，在(zai)施工中要(yao)特別注意(yi)保(bao)(bao)護。密(mi)封(feng)用3mm厚石棉橡膠墊片，不允許有(you)折裂。安裝人孔蓋(gai)板(ban)上緊螺栓時，要(yao)成對角均(jun)勻用力，以防孔蓋(gai)變形。
