人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)是指用于人(ren)(ren)(ren)(ren)(ren)員進出設(she)(she)備以便安(an)裝、檢修和安(an)全(quan)檢查(cha)的(de)開(kai)孔(kong)(kong)結構(gou)。主要由短筒節(jie)（或短管）、法蘭和帶(dai)把手的(de)人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)蓋組成。從安(an)全(quan)檢查(cha)考慮，壓力容(rong)器要求開(kai)設(she)(she)的(de)人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)數及其小(xiao)尺(chi)寸見“檢查(cha)孔(kong)(kong)”。人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)材料有(you)碳鋼和不銹(xiu)鋼。按受壓情況人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)分為(wei)常(chang)壓和受壓人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)；按形(xing)(xing)(xing)狀人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)分為(wei)圓(yuan)形(xing)(xing)(xing)、橢圓(yuan)形(xing)(xing)(xing)和矩(ju)(ju)形(xing)(xing)(xing)人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)，矩(ju)(ju)形(xing)(xing)(xing)人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)僅適用于常(chang)壓設(she)(she)備；按安(an)裝位置人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)分為(wei)水平(ping)和垂直安(an)裝人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)；人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)蓋固定方式(shi)有(you)迥(jiong)轉(zhuan)蓋和吊蓋；人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)開(kai)后速度有(you)普通式(shi)和快開(kai)式(shi)，人(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)結構(gou)和尺(chi)寸一般都已標準化，可參照(zhao)有(you)關手冊選用或設(she)(she)計。