人(ren)(ren)孔(kong)(kong)是指用(yong)于(yu)人(ren)(ren)員(yuan)進出設(she)備以(yi)便(bian)安(an)(an)裝、檢修和(he)(he)安(an)(an)全(quan)檢查的(de)(de)開(kai)孔(kong)(kong)結(jie)構。主要由(you)短筒節（或(huo)短管(guan)）、法蘭(lan)和(he)(he)帶把手(shou)(shou)的(de)(de)人(ren)(ren)孔(kong)(kong)蓋(gai)組成。從安(an)(an)全(quan)檢查考慮，壓(ya)(ya)力容器要求開(kai)設(she)的(de)(de)人(ren)(ren)孔(kong)(kong)數及其小尺寸見“檢查孔(kong)(kong)”。人(ren)(ren)孔(kong)(kong)材料有(you)碳鋼(gang)和(he)(he)不銹鋼(gang)。按受壓(ya)(ya)情況人(ren)(ren)孔(kong)(kong)分為常(chang)壓(ya)(ya)和(he)(he)受壓(ya)(ya)人(ren)(ren)孔(kong)(kong)；按形(xing)狀人(ren)(ren)孔(kong)(kong)分為圓(yuan)形(xing)、橢圓(yuan)形(xing)和(he)(he)矩形(xing)人(ren)(ren)孔(kong)(kong)，矩形(xing)人(ren)(ren)孔(kong)(kong)僅適(shi)用(yong)于(yu)常(chang)壓(ya)(ya)設(she)備；按安(an)(an)裝位(wei)置人(ren)(ren)孔(kong)(kong)分為水(shui)平和(he)(he)垂直安(an)(an)裝人(ren)(ren)孔(kong)(kong)；人(ren)(ren)孔(kong)(kong)蓋(gai)固定方(fang)式(shi)有(you)迥(jiong)轉蓋(gai)和(he)(he)吊蓋(gai)；人(ren)(ren)孔(kong)(kong)開(kai)后速(su)度有(you)普通式(shi)和(he)(he)快開(kai)式(shi)，人(ren)(ren)孔(kong)(kong)結(jie)構和(he)(he)尺寸一般(ban)都已標準(zhun)化，可參照有(you)關手(shou)(shou)冊選(xuan)用(yong)或(huo)設(she)計(ji)。