人(ren)(ren)(ren)(ren)孔(kong)是指用(yong)于人(ren)(ren)(ren)(ren)員(yuan)進(jin)出設(she)備以(yi)便安裝、檢修和安全(quan)檢查的(de)(de)開孔(kong)結構。主(zhu)要由短(duan)筒節（或短(duan)管）、法蘭和帶(dai)把(ba)手(shou)的(de)(de)人(ren)(ren)(ren)(ren)孔(kong)蓋組成(cheng)。從安全(quan)檢查考慮，壓(ya)力容器要求開設(she)的(de)(de)人(ren)(ren)(ren)(ren)孔(kong)數及其小(xiao)尺(chi)寸見“檢查孔(kong)”。人(ren)(ren)(ren)(ren)孔(kong)材料(liao)有碳鋼和不銹(xiu)鋼。按受(shou)壓(ya)情況(kuang)人(ren)(ren)(ren)(ren)孔(kong)分為(wei)常壓(ya)和受(shou)壓(ya)人(ren)(ren)(ren)(ren)孔(kong)；按形(xing)狀人(ren)(ren)(ren)(ren)孔(kong)分為(wei)圓形(xing)、橢圓形(xing)和矩形(xing)人(ren)(ren)(ren)(ren)孔(kong)，矩形(xing)人(ren)(ren)(ren)(ren)孔(kong)僅適用(yong)于常壓(ya)設(she)備；按安裝位置人(ren)(ren)(ren)(ren)孔(kong)分為(wei)水(shui)平和垂直(zhi)安裝人(ren)(ren)(ren)(ren)孔(kong)；人(ren)(ren)(ren)(ren)孔(kong)蓋固定方式(shi)有迥(jiong)轉蓋和吊蓋；人(ren)(ren)(ren)(ren)孔(kong)開后速度有普通(tong)式(shi)和快開式(shi)，人(ren)(ren)(ren)(ren)孔(kong)結構和尺(chi)寸一般都已標準化，可參照有關手(shou)冊選用(yong)或設(she)計。