人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)是指(zhi)用于人(ren)(ren)(ren)(ren)(ren)(ren)(ren)員進出設(she)(she)備以便(bian)安裝、檢(jian)(jian)修(xiu)和(he)安全檢(jian)(jian)查的開(kai)孔(kong)(kong)(kong)(kong)(kong)(kong)結構。主要(yao)由短筒節（或短管）、法蘭和(he)帶(dai)把手(shou)的人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)蓋組成(cheng)。從安全檢(jian)(jian)查考慮，壓力容器要(yao)求開(kai)設(she)(she)的人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)數及其小(xiao)尺寸(cun)見“檢(jian)(jian)查孔(kong)(kong)(kong)(kong)(kong)(kong)”。人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)材料有(you)碳鋼和(he)不銹鋼。按(an)受(shou)壓情況人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)分(fen)為常(chang)壓和(he)受(shou)壓人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)；按(an)形(xing)(xing)狀人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)分(fen)為圓形(xing)(xing)、橢圓形(xing)(xing)和(he)矩(ju)形(xing)(xing)人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)，矩(ju)形(xing)(xing)人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)僅適用于常(chang)壓設(she)(she)備；按(an)安裝位(wei)置(zhi)人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)分(fen)為水平和(he)垂(chui)直安裝人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)；人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)蓋固(gu)定(ding)方式(shi)(shi)有(you)迥轉蓋和(he)吊蓋；人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)開(kai)后速度有(you)普通式(shi)(shi)和(he)快開(kai)式(shi)(shi)，人(ren)(ren)(ren)(ren)(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)結構和(he)尺寸(cun)一(yi)般都已標(biao)準(zhun)化(hua)，可參照有(you)關手(shou)冊(ce)選用或設(she)(she)計(ji)。