人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)是指用(yong)于(yu)人(ren)(ren)(ren)員進出設備(bei)以便(bian)安裝(zhuang)、檢修和(he)(he)(he)安全檢查的(de)(de)開孔(kong)(kong)(kong)(kong)結(jie)構(gou)。主要(yao)由短(duan)筒節(jie)（或短(duan)管）、法蘭(lan)和(he)(he)(he)帶把手的(de)(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)蓋組成。從安全檢查考慮，壓(ya)(ya)(ya)力容器(qi)要(yao)求(qiu)開設的(de)(de)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)數及其小尺寸見“檢查孔(kong)(kong)(kong)(kong)”。人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)材料有(you)(you)碳鋼和(he)(he)(he)不(bu)銹鋼。按(an)(an)受壓(ya)(ya)(ya)情(qing)況人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分為常壓(ya)(ya)(ya)和(he)(he)(he)受壓(ya)(ya)(ya)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)；按(an)(an)形(xing)(xing)狀人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分為圓形(xing)(xing)、橢(tuo)圓形(xing)(xing)和(he)(he)(he)矩形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)，矩形(xing)(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)僅(jin)適用(yong)于(yu)常壓(ya)(ya)(ya)設備(bei)；按(an)(an)安裝(zhuang)位置人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)分為水(shui)平和(he)(he)(he)垂直(zhi)安裝(zhuang)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)；人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)蓋固定(ding)方(fang)式有(you)(you)迥轉蓋和(he)(he)(he)吊蓋；人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)開后速度有(you)(you)普(pu)通式和(he)(he)(he)快開式，人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)結(jie)構(gou)和(he)(he)(he)尺寸一般都已標準(zhun)化，可參照有(you)(you)關手冊(ce)選(xuan)用(yong)或設計(ji)。