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通河什么是自身壓力增壓系統,與機械密封有什么關聯

發(fa)布(bu)時間:2021-12-17 11:55:58 人氣(qi):94972 來源:

  通河機械密封又叫端面密封,在有關標準中是這樣定義的:由至少一對垂直于旋轉軸線的端面在流體壓力和補償機構彈力的作用以及輔助密封的配合下保持貼合并相對滑動而構成的防止流體泄漏的裝置。帶有平衡罐的自身壓力增壓系統是一種壓力傳遞機構,用于雙端面通河機械密封,以解(jie)決現(xian)有的(de)循(xun)環(huan)水泵(beng)的(de)部分揚程不(bu)能(neng)克服系(xi)統的(de)阻力,在循(xun)環(huan)泵(beng)流量不(bu)變的(de)情(qing)況(kuang)下,一旦循(xun)環(huan)泵(beng)的(de)揚程提(ti)高,則循(xun)環(huan)泵(beng)所配電機功(gong)率將大幅(fu)提(ti)高,設備運行(xing)電費也(ye)隨之(zhi)增加(jia)的(de)問題。

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  自身壓(ya)(ya)(ya)力增(zeng)(zeng)壓(ya)(ya)(ya)系統結構包(bao)括(kuo)出水(shui)(shui)口(kou)、固(gu)(gu)定(ding)(ding)法(fa)蘭、泵體、增(zeng)(zeng)壓(ya)(ya)(ya)裝置(zhi)、電(dian)機轉子、吊(diao)環、防(fang)護罩、水(shui)(shui)泵、固(gu)(gu)定(ding)(ding)基座(zuo)(zuo)(zuo)、底(di)(di)座(zuo)(zuo)(zuo)、加固(gu)(gu)件(jian)、控(kong)制閥、緊固(gu)(gu)件(jian),所述出水(shui)(shui)口(kou)與(yu)(yu)(yu)固(gu)(gu)定(ding)(ding)法(fa)蘭相(xiang)連(lian)(lian)(lian)接,泵體與(yu)(yu)(yu)增(zeng)(zeng)壓(ya)(ya)(ya)裝置(zhi)相(xiang)連(lian)(lian)(lian)接,增(zeng)(zeng)壓(ya)(ya)(ya)裝置(zhi)由進(jin)水(shui)(shui)口(kou)、水(shui)(shui)管(guan)、負(fu)壓(ya)(ya)(ya)室、平(ping)衡(heng)固(gu)(gu)定(ding)(ding)盤(pan)、緊固(gu)(gu)支架(jia)組(zu)成(cheng),進(jin)水(shui)(shui)口(kou)與(yu)(yu)(yu)水(shui)(shui)管(guan)相(xiang)連(lian)(lian)(lian)接,水(shui)(shui)管(guan)與(yu)(yu)(yu)負(fu)壓(ya)(ya)(ya)室相(xiang)連(lian)(lian)(lian)接,負(fu)壓(ya)(ya)(ya)室通(tong)過平(ping)衡(heng)固(gu)(gu)定(ding)(ding)盤(pan)保持平(ping)衡(heng),緊固(gu)(gu)支架(jia)與(yu)(yu)(yu)泵體固(gu)(gu)定(ding)(ding)連(lian)(lian)(lian)接,防(fang)護罩與(yu)(yu)(yu)水(shui)(shui)泵相(xiang)連(lian)(lian)(lian)接,水(shui)(shui)泵與(yu)(yu)(yu)固(gu)(gu)定(ding)(ding)基座(zuo)(zuo)(zuo)相(xiang)連(lian)(lian)(lian)接,固(gu)(gu)定(ding)(ding)基座(zuo)(zuo)(zuo)與(yu)(yu)(yu)底(di)(di)座(zuo)(zuo)(zuo)緊固(gu)(gu)連(lian)(lian)(lian)接,底(di)(di)座(zuo)(zuo)(zuo)上設有加固(gu)(gu)件(jian),緊固(gu)(gu)件(jian))與(yu)(yu)(yu)底(di)(di)座(zuo)(zuo)(zuo)固(gu)(gu)定(ding)(ding)連(lian)(lian)(lian)接。


  由于活(huo)(huo)(huo)塞(sai)(sai)體(ti)(ti)上(shang)端的承壓(ya)面(mian)(mian)(mian)積(ji)(ji)比活(huo)(huo)(huo)塞(sai)(sai)體(ti)(ti)下(xia)端的承壓(ya)面(mian)(mian)(mian)積(ji)(ji)減少(shao)了一根活(huo)(huo)(huo)塞(sai)(sai)桿的面(mian)(mian)(mian)積(ji)(ji),因(yin)此,密(mi)封(feng)(feng)油壓(ya)力按(an)兩(liang)端承壓(ya)面(mian)(mian)(mian)積(ji)(ji)反比例地增加(jia),從(cong)而保證密(mi)封(feng)(feng)條件。設(she)計活(huo)(huo)(huo)塞(sai)(sai)兩(liang)端承壓(ya)面(mian)(mian)(mian)積(ji)(ji)之比時(shi),應根據所要(yao)求的密(mi)封(feng)(feng)腔與釜內(nei)的壓(ya)力差來(lai)計算。活(huo)(huo)(huo)塞(sai)(sai)桿上(shang)裝(zhuang)有彈簧,調節彈簧的壓(ya)縮量,使彈簧力正(zheng)好抵消活(huo)(huo)(huo)塞(sai)(sai)上(shang)O形圈對缸壁(bi)的摩擦力,以(yi)減少(shao)壓(ya)差計算值與實際(ji)之間的誤差。此外(wai),活(huo)(huo)(huo)塞(sai)(sai)升降還有指示(shi)平(ping)衡罐中(zhong)液位的作用(yong)。當密(mi)封(feng)(feng)液漏泄需(xu)要(yao)補充時(shi),可用(yong)手(shou)動泵加(jia)注密(mi)封(feng)(feng)液。在使用(yong)時(shi)需(xu)注意(yi)活(huo)(huo)(huo)塞(sai)(sai)應經常處于平(ping)衡罐的下(xia)部位置,使活(huo)(huo)(huo)塞(sai)(sai)有向(xiang)上(shang)移動的余地。