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發布時間:2021-12-10 15:49:48 人氣:136226 來(lai)源:
打安鎮機械密封又(you)叫端面(mian)密封,在有關(guan)標準中(zhong)是這樣解說的(de)(de):由(you)至少一對垂直于旋轉(zhuan)軸線的(de)(de)端面(mian)在流(liu)體(ti)壓力(li)和補(bu)償機構彈力(li)的(de)(de)作(zuo)用(yong)以(yi)及輔助密封的(de)(de)配(pei)合下(xia)保(bao)持貼(tie)合并相對滑(hua)動(dong)而構成的(de)(de)防止流(liu)體(ti)泄(xie)漏的(de)(de)裝置。
打安鎮機械密封自(zi)身壓(ya)(ya)(ya)力增壓(ya)(ya)(ya)系統(tong)結(jie)構包括出水(shui)(shui)口(kou)、固(gu)(gu)(gu)定(ding)(ding)(ding)法蘭、泵(beng)體、增壓(ya)(ya)(ya)裝置(zhi)、電(dian)機(ji)轉子、吊環、防護罩(zhao)、水(shui)(shui)泵(beng)、固(gu)(gu)(gu)定(ding)(ding)(ding)基座(zuo)、底(di)座(zuo)、加固(gu)(gu)(gu)件(jian)(jian)(jian)(jian)、控制閥、緊(jin)(jin)固(gu)(gu)(gu)件(jian)(jian)(jian)(jian),所述出水(shui)(shui)口(kou)與(yu)固(gu)(gu)(gu)定(ding)(ding)(ding)法蘭相(xiang)(xiang)連(lian)接(jie),泵(beng)體與(yu)增壓(ya)(ya)(ya)裝置(zhi)相(xiang)(xiang)連(lian)接(jie),增壓(ya)(ya)(ya)裝置(zhi)由進水(shui)(shui)口(kou)、水(shui)(shui)管(guan)(guan)、負(fu)壓(ya)(ya)(ya)室(shi)(shi)、平(ping)(ping)衡固(gu)(gu)(gu)定(ding)(ding)(ding)盤、緊(jin)(jin)固(gu)(gu)(gu)支架(jia)組成,進水(shui)(shui)口(kou)與(yu)水(shui)(shui)管(guan)(guan)相(xiang)(xiang)連(lian)接(jie),水(shui)(shui)管(guan)(guan)與(yu)負(fu)壓(ya)(ya)(ya)室(shi)(shi)相(xiang)(xiang)連(lian)接(jie),負(fu)壓(ya)(ya)(ya)室(shi)(shi)通(tong)過平(ping)(ping)衡固(gu)(gu)(gu)定(ding)(ding)(ding)盤保(bao)持平(ping)(ping)衡,緊(jin)(jin)固(gu)(gu)(gu)支架(jia)與(yu)泵(beng)體固(gu)(gu)(gu)定(ding)(ding)(ding)連(lian)接(jie),防護罩(zhao)與(yu)水(shui)(shui)泵(beng)相(xiang)(xiang)連(lian)接(jie),水(shui)(shui)泵(beng)與(yu)固(gu)(gu)(gu)定(ding)(ding)(ding)基座(zuo)相(xiang)(xiang)連(lian)接(jie),固(gu)(gu)(gu)定(ding)(ding)(ding)基座(zuo)與(yu)底(di)座(zuo)緊(jin)(jin)固(gu)(gu)(gu)連(lian)接(jie),底(di)座(zuo)上設有加固(gu)(gu)(gu)件(jian)(jian)(jian)(jian),緊(jin)(jin)固(gu)(gu)(gu)件(jian)(jian)(jian)(jian)與(yu)底(di)座(zuo)固(gu)(gu)(gu)定(ding)(ding)(ding)連(lian)接(jie)。
動環和靜環的總稱叫做密封環,是構成打安鎮機械密封件主要的元件。密封環在很大程度上決定了打安鎮機械密封件的使用性能和壽命,所以打安鎮機械密封件對密封環有一(yi)些特定(ding)的要求。
一、密封環要容易加工制(zhi)造
二、安裝和維修要(yao)方便,價(jia)格要(yao)低(di)廉(lian)。
三(san)、密封環要有良好的(de)耐熱(re)沖(chong)擊(ji)能力(li),因此材(cai)料要有較高的(de)導(dao)熱(re)系(xi)數和較小的(de)線膨脹系(xi)數,承受熱(re)沖(chong)擊(ji)時不(bu)至(zhi)于開裂。
四、密封環(huan)要有(you)良(liang)好(hao)的(de)自(zi)潤滑性,防止工作中(zhong)發生短時間的(de)干摩擦(ca),不(bu)損(sun)傷密封端面。因此,密封環(huan)材料與(yu)密封流體還要有(you)很好(hao)的(de)浸潤性。
五、結構簡單
密封環結(jie)構簡單(dan)對稱,優(you)先考慮用(yong)整體型(xing)結(jie)構,也可(ke)采(cai)用(yong)組合(he)式(shi)密封環,盡(jin)量避免用(yong)密封端面噴(pen)涂式(shi)結(jie)構。
六、有(you)足夠的強度和剛度
打安鎮機械密封件在(zai)工(gong)作條件下不損壞,變形應(ying)盡(jin)量的(de)(de)小(xiao),工(gong)作條件波動時仍(reng)能保持密封性。尤其是密封端面要有足(zu)夠的(de)(de)強度(du)以及一定的(de)(de)耐腐蝕能力,保證產品的(de)(de)使用壽命。