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嘉祥機械密封對密封環有哪些要求?

發(fa)布時間:2021-12-10 15:49:48 人氣:129989 來(lai)源:

  嘉祥機械密封又叫端面密(mi)封,在有關標(biao)準中是這樣解說的(de):由至(zhi)少(shao)一對垂(chui)直于旋轉軸線的(de)端面在流體壓力(li)和補償機構彈力(li)的(de)作用以(yi)及輔助密(mi)封的(de)配合(he)下保持貼合(he)并(bing)相對滑(hua)動而(er)構成的(de)防止流體泄漏的(de)裝置。


  嘉祥機械密封自身壓力(li)增(zeng)壓系統(tong)結(jie)構包括出水(shui)口(kou)、固(gu)(gu)(gu)(gu)(gu)(gu)定(ding)(ding)法蘭(lan)、泵(beng)(beng)(beng)體(ti)、增(zeng)壓裝置、電(dian)機(ji)轉子、吊環、防護(hu)罩(zhao)、水(shui)泵(beng)(beng)(beng)、固(gu)(gu)(gu)(gu)(gu)(gu)定(ding)(ding)基(ji)座(zuo)、底(di)(di)(di)座(zuo)、加固(gu)(gu)(gu)(gu)(gu)(gu)件、控制(zhi)閥、緊(jin)(jin)(jin)固(gu)(gu)(gu)(gu)(gu)(gu)件,所述出水(shui)口(kou)與(yu)(yu)固(gu)(gu)(gu)(gu)(gu)(gu)定(ding)(ding)法蘭(lan)相(xiang)連(lian)(lian)(lian)(lian)接(jie),泵(beng)(beng)(beng)體(ti)與(yu)(yu)增(zeng)壓裝置相(xiang)連(lian)(lian)(lian)(lian)接(jie),增(zeng)壓裝置由(you)進水(shui)口(kou)、水(shui)管(guan)(guan)、負壓室(shi)(shi)(shi)、平衡固(gu)(gu)(gu)(gu)(gu)(gu)定(ding)(ding)盤、緊(jin)(jin)(jin)固(gu)(gu)(gu)(gu)(gu)(gu)支(zhi)架組成,進水(shui)口(kou)與(yu)(yu)水(shui)管(guan)(guan)相(xiang)連(lian)(lian)(lian)(lian)接(jie),水(shui)管(guan)(guan)與(yu)(yu)負壓室(shi)(shi)(shi)相(xiang)連(lian)(lian)(lian)(lian)接(jie),負壓室(shi)(shi)(shi)通過平衡固(gu)(gu)(gu)(gu)(gu)(gu)定(ding)(ding)盤保持平衡,緊(jin)(jin)(jin)固(gu)(gu)(gu)(gu)(gu)(gu)支(zhi)架與(yu)(yu)泵(beng)(beng)(beng)體(ti)固(gu)(gu)(gu)(gu)(gu)(gu)定(ding)(ding)連(lian)(lian)(lian)(lian)接(jie),防護(hu)罩(zhao)與(yu)(yu)水(shui)泵(beng)(beng)(beng)相(xiang)連(lian)(lian)(lian)(lian)接(jie),水(shui)泵(beng)(beng)(beng)與(yu)(yu)固(gu)(gu)(gu)(gu)(gu)(gu)定(ding)(ding)基(ji)座(zuo)相(xiang)連(lian)(lian)(lian)(lian)接(jie),固(gu)(gu)(gu)(gu)(gu)(gu)定(ding)(ding)基(ji)座(zuo)與(yu)(yu)底(di)(di)(di)座(zuo)緊(jin)(jin)(jin)固(gu)(gu)(gu)(gu)(gu)(gu)連(lian)(lian)(lian)(lian)接(jie),底(di)(di)(di)座(zuo)上設(she)有加固(gu)(gu)(gu)(gu)(gu)(gu)件,緊(jin)(jin)(jin)固(gu)(gu)(gu)(gu)(gu)(gu)件與(yu)(yu)底(di)(di)(di)座(zuo)固(gu)(gu)(gu)(gu)(gu)(gu)定(ding)(ding)連(lian)(lian)(lian)(lian)接(jie)。


  動環和靜環的總稱叫做密封環,是構成嘉祥機械密封件主要的元件。密封環在很大程度上決定了嘉祥機械密封件的使用性能和壽命,所以嘉祥機械密封件對密封(feng)環(huan)有一些特定的(de)要(yao)求。


  一、密封(feng)環要容易加工制(zhi)造


  二、安裝和(he)維修要方(fang)便,價格要低廉。


  三、密封環(huan)要有良好(hao)的(de)耐熱沖擊(ji)能力,因此材料要有較(jiao)高的(de)導(dao)熱系(xi)數(shu)和(he)較(jiao)小的(de)線(xian)膨脹系(xi)數(shu),承受熱沖擊(ji)時不至于開裂。


  四、密(mi)(mi)封(feng)環要有(you)良(liang)好(hao)的自潤滑性,防止工作中(zhong)發生短(duan)時(shi)間的干摩擦,不損傷密(mi)(mi)封(feng)端(duan)面。因此,密(mi)(mi)封(feng)環材料與密(mi)(mi)封(feng)流體(ti)還要有(you)很好(hao)的浸潤性。


  五、結構簡單


  密(mi)封環(huan)結(jie)構(gou)簡單(dan)對稱(cheng),優先考慮用(yong)整體型(xing)結(jie)構(gou),也可采用(yong)組合式密(mi)封環(huan),盡(jin)量(liang)避免用(yong)密(mi)封端面噴涂(tu)式結(jie)構(gou)。


  六、有足夠的強度和剛度


  嘉祥機械密封件在(zai)工作(zuo)條件下(xia)不損壞,變形應(ying)盡量的小,工作(zuo)條件波動時仍能(neng)保持密(mi)封(feng)性(xing)。尤其是密(mi)封(feng)端面(mian)要有足夠的強度以及(ji)一定的耐腐蝕(shi)能(neng)力,保證產(chan)品的使用壽(shou)命。