午夜福利電影:常壓人孔

人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)是指用(yong)于(yu)人(ren)(ren)(ren)員進出設備以便(bian)安(an)(an)(an)裝(zhuang)(zhuang)、檢(jian)修和(he)安(an)(an)(an)全(quan)檢(jian)查的開孔(kong)(kong)(kong)(kong)(kong)(kong)結構(gou)。主要由(you)短筒節（或短管）、法蘭和(he)帶把手的人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)蓋組成。從安(an)(an)(an)全(quan)檢(jian)查考慮，壓力容器要求開設的人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)數(shu)及其小尺寸(cun)見“檢(jian)查孔(kong)(kong)(kong)(kong)(kong)(kong)”。人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)材料有碳鋼和(he)不銹鋼。按受(shou)壓情(qing)況人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)分為(wei)常壓和(he)受(shou)壓人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)；按形(xing)狀人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)分為(wei)圓形(xing)、橢(tuo)圓形(xing)和(he)矩形(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)，矩形(xing)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)僅適用(yong)于(yu)常壓設備；按安(an)(an)(an)裝(zhuang)(zhuang)位(wei)置人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)分為(wei)水(shui)平和(he)垂直(zhi)安(an)(an)(an)裝(zhuang)(zhuang)人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)；人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)蓋固定方式(shi)有迥(jiong)轉蓋和(he)吊(diao)蓋；人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)開后(hou)速(su)度有普通(tong)式(shi)和(he)快開式(shi)，人(ren)(ren)(ren)孔(kong)(kong)(kong)(kong)(kong)(kong)結構(gou)和(he)尺寸(cun)一般都已標準(zhun)化，可(ke)參照有關手冊選(xuan)用(yong)或設計(ji)。