人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)是(shi)指用(yong)于人(ren)(ren)(ren)(ren)(ren)(ren)員進出設備以便安(an)(an)裝(zhuang)、檢(jian)(jian)修和(he)(he)安(an)(an)全檢(jian)(jian)查的(de)開(kai)孔(kong)(kong)(kong)(kong)結構。主(zhu)要由短筒節(jie)（或短管）、法蘭和(he)(he)帶把(ba)手(shou)的(de)人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)蓋(gai)(gai)組成。從安(an)(an)全檢(jian)(jian)查考慮，壓(ya)(ya)力(li)容器要求開(kai)設的(de)人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)數及其小(xiao)尺(chi)寸(cun)見“檢(jian)(jian)查孔(kong)(kong)(kong)(kong)”。人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)材料有(you)碳鋼(gang)和(he)(he)不銹(xiu)鋼(gang)。按(an)受壓(ya)(ya)情況人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為常壓(ya)(ya)和(he)(he)受壓(ya)(ya)人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)；按(an)形(xing)(xing)狀人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為圓形(xing)(xing)、橢(tuo)圓形(xing)(xing)和(he)(he)矩形(xing)(xing)人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)，矩形(xing)(xing)人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)僅適用(yong)于常壓(ya)(ya)設備；按(an)安(an)(an)裝(zhuang)位置人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分(fen)為水平(ping)和(he)(he)垂直安(an)(an)裝(zhuang)人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)；人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)蓋(gai)(gai)固(gu)定方式(shi)有(you)迥(jiong)轉蓋(gai)(gai)和(he)(he)吊蓋(gai)(gai)；人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)開(kai)后速度有(you)普通式(shi)和(he)(he)快開(kai)式(shi)，人(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)結構和(he)(he)尺(chi)寸(cun)一般都(dou)已標準化，可(ke)參照有(you)關手(shou)冊(ce)選用(yong)或設計。