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YF-B20H4-S液板式溢流(liu)調壓(ya)(ya)(ya)閥(fa)(fa) 安(an)(an)全(quan)溢流(liu)閥(fa)(fa)在系(xi)統(tong)(tong)(tong)中(zhong)起安(an)(an)全(quan)保(bao)(bao)護作用。當系(xi)統(tong)(tong)(tong)壓(ya)(ya)(ya)力(li)超過(guo)規定值(zhi)時，安(an)(an)全(quan)閥(fa)(fa)頂開，將系(xi)統(tong)(tong)(tong)中(zhong)的一部(bu)分氣(qi)體排入大氣(qi)，使(shi)(shi)系(xi)統(tong)(tong)(tong)壓(ya)(ya)(ya)力(li)不超過(guo)允許值(zhi)，從而保(bao)(bao)證(zheng)系(xi)統(tong)(tong)(tong)不因壓(ya)(ya)(ya)力(li)過(guo)高而發(fa)生事故。安(an)(an)全(quan)閥(fa)(fa)又稱(cheng)溢流(liu)閥(fa)(fa)。安(an)(an)全(quan)閥(fa)(fa)顧名思義是保(bao)(bao)證(zheng)壓(ya)(ya)(ya)力(li)管道、壓(ya)(ya)(ya)力(li)容器(qi)的關鍵(jian)安(an)(an)全(quan)應用保(bao)(bao)障，為(wei)了保(bao)(bao)證(zheng)安(an)(an)全(quan)閥(fa)(fa)的正常工作及延長(chang)安(an)(an)全(quan)閥(fa)(fa)的使(shi)(shi)用壽命。

YF-B30H液板式溢(yi)流調(diao)壓(ya)閥(fa) 安(an)(an)全(quan)(quan)溢(yi)流閥(fa)在(zai)系(xi)統中(zhong)起安(an)(an)全(quan)(quan)保(bao)護(hu)作用(yong)。當系(xi)統壓(ya)力(li)超過規定(ding)(ding)(ding)值(zhi)時，安(an)(an)全(quan)(quan)閥(fa)頂開，將(jiang)系(xi)統中(zhong)的(de)(de)一(yi)部分氣(qi)體(ti)排入大氣(qi)，使(shi)系(xi)統壓(ya)力(li)不超過允(yun)許值(zhi)，從(cong)而(er)保(bao)證系(xi)統不因壓(ya)力(li)過高而(er)發生事故。由(you)操作壓(ya)力(li)決定(ding)(ding)(ding)安(an)(an)全(quan)(quan)閥(fa)的(de)(de)公稱壓(ya)力(li)，由(you)操作溫(wen)(wen)度(du)(du)決定(ding)(ding)(ding)安(an)(an)全(quan)(quan)閥(fa)的(de)(de)使(shi)用(yong)溫(wen)(wen)度(du)(du)范圍(wei)，由(you)計(ji)算出的(de)(de)安(an)(an)全(quan)(quan)閥(fa)的(de)(de)定(ding)(ding)(ding)壓(ya)值(zhi)決定(ding)(ding)(ding)彈簧或杠桿的(de)(de)定(ding)(ding)(ding)壓(ya)范圍(wei)，再根(gen)據使(shi)用(yong)介(jie)質決定(ding)(ding)(ding)安(an)(an)全(quan)(quan)閥(fa)的(de)(de)材質和結構型式，再根(gen)據安(an)(an)全(quan)(quan)閥(fa)泄(xie)放量(liang)計(ji)算出安(an)(an)全(quan)(quan)閥(fa)的(de)(de)喉徑。

YF-B20H4液板(ban)式溢流(liu)調(diao)壓閥(fa) 定(ding)期將安全(quan)閥(fa)拆(chai)下進行全(quan)面清洗、檢查并重(zhong)新研磨、整定(ding)后方(fang)可重(zhong)新使(shi)(shi)用。為了保證安全(quan)閥(fa)的(de)正常(chang)工作(zuo)及(ji)延長安全(quan)閥(fa)的(de)使(shi)(shi)用壽命，在使(shi)(shi)用中應(ying)做到定(ding)期檢查運行中的(de)安全(quan)閥(fa)是(shi)否(fou)泄漏，卡阻(zu)及(ji)彈(dan)簧(huang)銹蝕等不(bu)正常(chang)現(xian)象，并注意觀察調(diao)節(jie)螺(luo)套及(ji)調(diao)節(jie)圈緊(jin)定(ding)螺(luo)釘的(de)鎖緊(jin)螺(luo)母(mu)是(shi)否(fou)有松動，若發現(xian)問題及(ji)時采取(qu)適當的(de)維護(hu)措(cuo)施。

YF-B20H3液(ye)板式溢流調壓閥(fa)還應定(ding)期(qi)將安全(quan)閥(fa)拆下(xia)進行(xing)全(quan)面清(qing)洗(xi)、檢查并重(zhong)新研(yan)磨、整定(ding)后(hou)方(fang)可重(zhong)新使用(yong)

YF-B20H2液板式溢流(liu)調壓(ya)(ya)(ya)閥 由操(cao)作壓(ya)(ya)(ya)力決(jue)定安(an)全(quan)閥的(de)公稱壓(ya)(ya)(ya)力，由操(cao)作溫(wen)度(du)決(jue)定安(an)全(quan)閥的(de)使(shi)(shi)用(yong)溫(wen)度(du)范圍，由計算出的(de)安(an)全(quan)閥的(de)定壓(ya)(ya)(ya)值決(jue)定彈(dan)簧或杠桿(gan)的(de)定壓(ya)(ya)(ya)范圍，再根(gen)據(ju)使(shi)(shi)用(yong)介(jie)質決(jue)定安(an)全(quan)閥的(de)材質和(he)結(jie)構型式，再根(gen)據(ju)安(an)全(quan)閥泄放量計算出安(an)全(quan)閥的(de)喉徑(jing)。以下(xia)為安(an)全(quan)閥選(xuan)用(yong)的(de)一(yi)般規(gui)則(ze)。

YF-B20H1液板式溢流調壓閥 安全(quan)保護(hu)作用：系(xi)統(tong)(tong)(tong)(tong)正常工作時，閥門關閉。只有(you)當負(fu)載超過(guo)規定極(ji)限(xian)（系(xi)統(tong)(tong)(tong)(tong)壓力超過(guo)設定壓力）時，溢流閥才會打開，并進行過(guo)載保護(hu)，使系(xi)統(tong)(tong)(tong)(tong)壓力不(bu)再升高（通(tong)常安全(quan)閥的設定壓力比工作壓力高10%-20系(xi)統(tong)(tong)(tong)(tong)壓力）。