人(ren)孔(kong)(kong)是指(zhi)用于人(ren)員進出設備以便安裝(zhuang)、檢修(xiu)和(he)安全檢查的(de)開孔(kong)(kong)結構。主要(yao)由短筒節（或(huo)短管）、法(fa)蘭和(he)帶(dai)把手(shou)的(de)人(ren)孔(kong)(kong)蓋(gai)組成。從安全檢查考(kao)慮(lv)，壓力容器要(yao)求(qiu)開設的(de)人(ren)孔(kong)(kong)數(shu)及其(qi)小尺寸(cun)見“檢查孔(kong)(kong)”。人(ren)孔(kong)(kong)材(cai)料有(you)(you)碳鋼和(he)不(bu)銹鋼。按(an)受壓情況人(ren)孔(kong)(kong)分(fen)(fen)為常壓和(he)受壓人(ren)孔(kong)(kong)；按(an)形(xing)(xing)狀人(ren)孔(kong)(kong)分(fen)(fen)為圓(yuan)形(xing)(xing)、橢圓(yuan)形(xing)(xing)和(he)矩形(xing)(xing)人(ren)孔(kong)(kong)，矩形(xing)(xing)人(ren)孔(kong)(kong)僅(jin)適用于常壓設備；按(an)安裝(zhuang)位(wei)置(zhi)人(ren)孔(kong)(kong)分(fen)(fen)為水平和(he)垂直安裝(zhuang)人(ren)孔(kong)(kong)；人(ren)孔(kong)(kong)蓋(gai)固(gu)定方式(shi)有(you)(you)迥轉蓋(gai)和(he)吊蓋(gai)；人(ren)孔(kong)(kong)開后速度有(you)(you)普(pu)通(tong)式(shi)和(he)快開式(shi)，人(ren)孔(kong)(kong)結構和(he)尺寸(cun)一般(ban)都已標準化，可參(can)照有(you)(you)關手(shou)冊選用或(huo)設計。