人(ren)(ren)(ren)孔(kong)(kong)(kong)是指用(yong)于人(ren)(ren)(ren)員進出設(she)備以(yi)便安(an)裝(zhuang)、檢修和(he)安(an)全檢查(cha)的開(kai)孔(kong)(kong)(kong)結構(gou)。主要由短筒節（或(huo)短管）、法蘭和(he)帶把手的人(ren)(ren)(ren)孔(kong)(kong)(kong)蓋(gai)組(zu)成。從安(an)全檢查(cha)考慮(lv)，壓(ya)力容器(qi)要求開(kai)設(she)的人(ren)(ren)(ren)孔(kong)(kong)(kong)數(shu)及其(qi)小(xiao)尺寸見“檢查(cha)孔(kong)(kong)(kong)”。人(ren)(ren)(ren)孔(kong)(kong)(kong)材(cai)料有(you)碳鋼(gang)和(he)不銹鋼(gang)。按受(shou)壓(ya)情況人(ren)(ren)(ren)孔(kong)(kong)(kong)分為(wei)常壓(ya)和(he)受(shou)壓(ya)人(ren)(ren)(ren)孔(kong)(kong)(kong)；按形(xing)狀人(ren)(ren)(ren)孔(kong)(kong)(kong)分為(wei)圓形(xing)、橢圓形(xing)和(he)矩(ju)形(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)，矩(ju)形(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)僅適(shi)用(yong)于常壓(ya)設(she)備；按安(an)裝(zhuang)位置人(ren)(ren)(ren)孔(kong)(kong)(kong)分為(wei)水(shui)平和(he)垂直安(an)裝(zhuang)人(ren)(ren)(ren)孔(kong)(kong)(kong)；人(ren)(ren)(ren)孔(kong)(kong)(kong)蓋(gai)固定方式有(you)迥(jiong)轉蓋(gai)和(he)吊蓋(gai)；人(ren)(ren)(ren)孔(kong)(kong)(kong)開(kai)后(hou)速(su)度有(you)普通式和(he)快開(kai)式，人(ren)(ren)(ren)孔(kong)(kong)(kong)結構(gou)和(he)尺寸一般都已標準化，可參(can)照有(you)關手冊選用(yong)或(huo)設(she)計。