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發布(bu)時間:2021-12-10 15:49:48 人氣:130093 來源:
金臺機械密封又叫端(duan)面(mian)密封,在有關(guan)標準(zhun)中是(shi)這樣(yang)解說的:由至(zhi)少一對垂直(zhi)于旋轉軸線(xian)的端(duan)面(mian)在流體壓力和(he)補(bu)償(chang)機(ji)構(gou)彈力的作用以及輔助密封的配(pei)合下(xia)保持貼合并相對滑動而構(gou)成(cheng)的防止流體泄漏(lou)的裝置。
金臺機械密封自身壓(ya)力增(zeng)壓(ya)系統結構包括出水(shui)(shui)(shui)口、固(gu)(gu)(gu)(gu)定(ding)(ding)法蘭、泵(beng)體、增(zeng)壓(ya)裝置、電機(ji)轉子、吊環、防(fang)護(hu)罩(zhao)、水(shui)(shui)(shui)泵(beng)、固(gu)(gu)(gu)(gu)定(ding)(ding)基(ji)座(zuo)、底座(zuo)、加(jia)固(gu)(gu)(gu)(gu)件(jian)、控制閥、緊固(gu)(gu)(gu)(gu)件(jian),所(suo)述出水(shui)(shui)(shui)口與(yu)(yu)固(gu)(gu)(gu)(gu)定(ding)(ding)法蘭相(xiang)(xiang)連(lian)(lian)(lian)接(jie),泵(beng)體與(yu)(yu)增(zeng)壓(ya)裝置相(xiang)(xiang)連(lian)(lian)(lian)接(jie),增(zeng)壓(ya)裝置由(you)進水(shui)(shui)(shui)口、水(shui)(shui)(shui)管(guan)、負(fu)(fu)壓(ya)室、平(ping)衡(heng)(heng)(heng)固(gu)(gu)(gu)(gu)定(ding)(ding)盤、緊固(gu)(gu)(gu)(gu)支(zhi)架組成,進水(shui)(shui)(shui)口與(yu)(yu)水(shui)(shui)(shui)管(guan)相(xiang)(xiang)連(lian)(lian)(lian)接(jie),水(shui)(shui)(shui)管(guan)與(yu)(yu)負(fu)(fu)壓(ya)室相(xiang)(xiang)連(lian)(lian)(lian)接(jie),負(fu)(fu)壓(ya)室通(tong)過平(ping)衡(heng)(heng)(heng)固(gu)(gu)(gu)(gu)定(ding)(ding)盤保(bao)持平(ping)衡(heng)(heng)(heng),緊固(gu)(gu)(gu)(gu)支(zhi)架與(yu)(yu)泵(beng)體固(gu)(gu)(gu)(gu)定(ding)(ding)連(lian)(lian)(lian)接(jie),防(fang)護(hu)罩(zhao)與(yu)(yu)水(shui)(shui)(shui)泵(beng)相(xiang)(xiang)連(lian)(lian)(lian)接(jie),水(shui)(shui)(shui)泵(beng)與(yu)(yu)固(gu)(gu)(gu)(gu)定(ding)(ding)基(ji)座(zuo)相(xiang)(xiang)連(lian)(lian)(lian)接(jie),固(gu)(gu)(gu)(gu)定(ding)(ding)基(ji)座(zuo)與(yu)(yu)底座(zuo)緊固(gu)(gu)(gu)(gu)連(lian)(lian)(lian)接(jie),底座(zuo)上(shang)設有加(jia)固(gu)(gu)(gu)(gu)件(jian),緊固(gu)(gu)(gu)(gu)件(jian)與(yu)(yu)底座(zuo)固(gu)(gu)(gu)(gu)定(ding)(ding)連(lian)(lian)(lian)接(jie)。
動環和靜環的總稱叫做密封環,是構成金臺機械密封件主要的元件。密封環在很大程度上決定了金臺機械密封件的使用性能和壽命,所以金臺機械密封件對(dui)密(mi)封環有(you)一些特(te)定(ding)的要求。
一、密封環要(yao)容易加(jia)工制造
二、安裝和維修(xiu)要方(fang)便,價格要低廉(lian)。
三、密封環要有(you)良好的耐熱(re)沖擊(ji)能力(li),因此(ci)材料要有(you)較(jiao)高的導熱(re)系數(shu)和較(jiao)小的線膨脹(zhang)系數(shu),承受熱(re)沖擊(ji)時不至于開裂。
四、密(mi)封(feng)環要(yao)有良(liang)好的(de)(de)自(zi)潤滑性,防止工作中發生短時間的(de)(de)干摩擦,不損傷密(mi)封(feng)端面。因此,密(mi)封(feng)環材料與密(mi)封(feng)流體還要(yao)有很(hen)好的(de)(de)浸(jin)潤性。
五、結構簡單
密封環結(jie)構簡單對稱,優先考慮用(yong)整體(ti)型結(jie)構,也(ye)可采(cai)用(yong)組合式密封環,盡(jin)量(liang)避免用(yong)密封端面(mian)噴涂式結(jie)構。
六、有(you)足夠(gou)的(de)強度(du)和剛度(du)
金臺機械密封件(jian)在工作(zuo)條件(jian)下不(bu)損壞,變形應盡量的(de)(de)小,工作(zuo)條件(jian)波動時仍能保(bao)持密(mi)(mi)封性。尤其是密(mi)(mi)封端(duan)面要(yao)有足夠(gou)的(de)(de)強度以及一定的(de)(de)耐(nai)腐蝕(shi)能力,保(bao)證產品的(de)(de)使用(yong)壽命。