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發布(bu)時間:2021-12-10 15:49:48 人氣(qi):129937 來源:
曲松機械密封又叫端面密封(feng),在有(you)關標準中是這樣解說(shuo)的(de)(de):由至少(shao)一對垂直(zhi)于(yu)旋轉軸線的(de)(de)端面在流體(ti)壓力和補(bu)償機構(gou)彈力的(de)(de)作用以及輔助(zhu)密封(feng)的(de)(de)配合(he)下保持(chi)貼合(he)并相(xiang)對滑動而構(gou)成的(de)(de)防止流體(ti)泄漏的(de)(de)裝置。
曲松機械密封自身壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)力(li)增(zeng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)系(xi)統(tong)結(jie)構包(bao)括(kuo)出(chu)水(shui)口、固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)(ding)法蘭、泵(beng)(beng)體(ti)、增(zeng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)裝置、電機轉子、吊環、防(fang)(fang)護罩、水(shui)泵(beng)(beng)、固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)(ding)基座(zuo)、底座(zuo)、加固(gu)(gu)(gu)(gu)(gu)件(jian)、控制(zhi)閥(fa)、緊(jin)(jin)固(gu)(gu)(gu)(gu)(gu)件(jian),所述(shu)出(chu)水(shui)口與固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)(ding)法蘭相(xiang)(xiang)(xiang)連接,泵(beng)(beng)體(ti)與增(zeng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)裝置相(xiang)(xiang)(xiang)連接,增(zeng)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)裝置由進水(shui)口、水(shui)管(guan)、負(fu)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)室、平(ping)(ping)衡固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)(ding)盤、緊(jin)(jin)固(gu)(gu)(gu)(gu)(gu)支(zhi)(zhi)架(jia)組(zu)成,進水(shui)口與水(shui)管(guan)相(xiang)(xiang)(xiang)連接,水(shui)管(guan)與負(fu)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)室相(xiang)(xiang)(xiang)連接,負(fu)壓(ya)(ya)(ya)(ya)(ya)(ya)(ya)室通過平(ping)(ping)衡固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)(ding)盤保持平(ping)(ping)衡,緊(jin)(jin)固(gu)(gu)(gu)(gu)(gu)支(zhi)(zhi)架(jia)與泵(beng)(beng)體(ti)固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)(ding)連接,防(fang)(fang)護罩與水(shui)泵(beng)(beng)相(xiang)(xiang)(xiang)連接,水(shui)泵(beng)(beng)與固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)(ding)基座(zuo)相(xiang)(xiang)(xiang)連接,固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)(ding)基座(zuo)與底座(zuo)緊(jin)(jin)固(gu)(gu)(gu)(gu)(gu)連接,底座(zuo)上設(she)有(you)加固(gu)(gu)(gu)(gu)(gu)件(jian),緊(jin)(jin)固(gu)(gu)(gu)(gu)(gu)件(jian)與底座(zuo)固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)(ding)連接。
動環和靜環的總稱叫做密封環,是構成曲松機械密封件主要的元件。密封環在很大程度上決定了曲松機械密封件的使用性能和壽命,所以曲松機械密封件對密(mi)封環(huan)有(you)一(yi)些特定的(de)要求。
一、密封環要(yao)容(rong)易加工制(zhi)造
二、安裝(zhuang)和維修要(yao)方便,價格(ge)要(yao)低廉。
三、密封環要有良好的(de)耐熱(re)沖擊(ji)能力,因此材料要有較(jiao)高的(de)導熱(re)系(xi)數和較(jiao)小的(de)線膨脹系(xi)數,承受熱(re)沖擊(ji)時(shi)不至(zhi)于開裂。
四、密(mi)(mi)封(feng)環(huan)要有良好的(de)自潤滑性,防止工作(zuo)中發生短時間(jian)的(de)干(gan)摩擦,不(bu)損傷密(mi)(mi)封(feng)端面。因此,密(mi)(mi)封(feng)環(huan)材料與密(mi)(mi)封(feng)流體還(huan)要有很好的(de)浸(jin)潤性。
五、結構簡單
密(mi)封環結(jie)構簡單(dan)對稱,優先(xian)考(kao)慮用整(zheng)體型結(jie)構,也可采(cai)用組(zu)合式密(mi)封環,盡量避免用密(mi)封端面噴涂式結(jie)構。
六、有足夠(gou)的強度和剛度
曲松機械密封件(jian)(jian)在工作條件(jian)(jian)下不(bu)損壞,變形(xing)應盡(jin)量(liang)的小,工作條件(jian)(jian)波(bo)動時仍(reng)能保持密封性。尤其是(shi)密封端面要有足夠的強(qiang)度(du)以及一定的耐腐(fu)蝕能力,保證產品的使用壽命(ming)。