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發(fa)布時間:2021-12-10 15:49:48 人氣(qi):136033 來源:
當陽機械密封又(you)叫端面密封,在有關標準中是這樣解(jie)說的:由至少一對垂(chui)直(zhi)于(yu)旋轉軸線的端面在流體壓力和(he)補償機構(gou)彈力的作用以及輔(fu)助密封的配合(he)下(xia)保(bao)持(chi)貼合(he)并相(xiang)對滑動(dong)而構(gou)成的防止流體泄(xie)漏的裝置(zhi)。
當陽機械密封自(zi)身壓(ya)(ya)力增(zeng)壓(ya)(ya)系(xi)統結(jie)構(gou)包括出(chu)水(shui)(shui)(shui)口、固(gu)(gu)(gu)定(ding)(ding)(ding)法(fa)蘭、泵體、增(zeng)壓(ya)(ya)裝置、電機轉(zhuan)子、吊(diao)環、防護罩、水(shui)(shui)(shui)泵、固(gu)(gu)(gu)定(ding)(ding)(ding)基(ji)座(zuo)、底(di)座(zuo)、加(jia)固(gu)(gu)(gu)件(jian)、控制(zhi)閥(fa)、緊(jin)(jin)固(gu)(gu)(gu)件(jian),所述出(chu)水(shui)(shui)(shui)口與(yu)(yu)(yu)固(gu)(gu)(gu)定(ding)(ding)(ding)法(fa)蘭相連接(jie),泵體與(yu)(yu)(yu)增(zeng)壓(ya)(ya)裝置相連接(jie),增(zeng)壓(ya)(ya)裝置由進(jin)(jin)水(shui)(shui)(shui)口、水(shui)(shui)(shui)管、負(fu)(fu)壓(ya)(ya)室、平衡(heng)固(gu)(gu)(gu)定(ding)(ding)(ding)盤、緊(jin)(jin)固(gu)(gu)(gu)支架組(zu)成,進(jin)(jin)水(shui)(shui)(shui)口與(yu)(yu)(yu)水(shui)(shui)(shui)管相連接(jie),水(shui)(shui)(shui)管與(yu)(yu)(yu)負(fu)(fu)壓(ya)(ya)室相連接(jie),負(fu)(fu)壓(ya)(ya)室通過平衡(heng)固(gu)(gu)(gu)定(ding)(ding)(ding)盤保持平衡(heng),緊(jin)(jin)固(gu)(gu)(gu)支架與(yu)(yu)(yu)泵體固(gu)(gu)(gu)定(ding)(ding)(ding)連接(jie),防護罩與(yu)(yu)(yu)水(shui)(shui)(shui)泵相連接(jie),水(shui)(shui)(shui)泵與(yu)(yu)(yu)固(gu)(gu)(gu)定(ding)(ding)(ding)基(ji)座(zuo)相連接(jie),固(gu)(gu)(gu)定(ding)(ding)(ding)基(ji)座(zuo)與(yu)(yu)(yu)底(di)座(zuo)緊(jin)(jin)固(gu)(gu)(gu)連接(jie),底(di)座(zuo)上設有加(jia)固(gu)(gu)(gu)件(jian),緊(jin)(jin)固(gu)(gu)(gu)件(jian)與(yu)(yu)(yu)底(di)座(zuo)固(gu)(gu)(gu)定(ding)(ding)(ding)連接(jie)。
動環和靜環的總稱叫做密封環,是構成當陽機械密封件主要的元件。密封環在很大程度上決定了當陽機械密封件的使用性能和壽命,所以當陽機械密封件對(dui)密封環有一些特(te)定的要求。
一、密封環要容易加工(gong)制造(zao)
二、安裝和維修要方(fang)便(bian),價格要低(di)廉。
三、密封環(huan)要(yao)有良好的(de)耐熱沖(chong)擊能力(li),因此材料(liao)要(yao)有較(jiao)高的(de)導熱系數(shu)和較(jiao)小的(de)線膨脹(zhang)系數(shu),承受(shou)熱沖(chong)擊時不至于開(kai)裂。
四、密(mi)(mi)封環要有(you)良好(hao)的自潤(run)滑(hua)性,防止工作(zuo)中發生短(duan)時(shi)間的干摩擦,不損傷密(mi)(mi)封端面。因(yin)此,密(mi)(mi)封環材料與密(mi)(mi)封流體還要有(you)很好(hao)的浸(jin)潤(run)性。
五、結構簡單
密封(feng)環結構簡單對稱,優(you)先考慮用(yong)(yong)整(zheng)體型(xing)結構,也可采用(yong)(yong)組(zu)合(he)式密封(feng)環,盡量避免(mian)用(yong)(yong)密封(feng)端面噴涂式結構。
六(liu)、有足夠的(de)強度(du)(du)和(he)剛度(du)(du)
當陽機械密封件(jian)在工(gong)作條件(jian)下不損壞,變(bian)形應盡量的小,工(gong)作條件(jian)波(bo)動時仍(reng)能(neng)保持密封(feng)性。尤其(qi)是密封(feng)端(duan)面(mian)要(yao)有(you)足夠的強度以(yi)及(ji)一定的耐腐蝕(shi)能(neng)力(li),保證產品的使(shi)用壽命(ming)。