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發布(bu)時間:2021-12-17 11:55:58 人氣:99162 來源:
靈璧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,用于雙端面靈璧機械密封,以解(jie)決現有的(de)(de)循(xun)環水泵的(de)(de)部分揚(yang)程(cheng)不能(neng)克(ke)服系統的(de)(de)阻(zu)力,在(zai)循(xun)環泵流量不變的(de)(de)情況下,一旦循(xun)環泵的(de)(de)揚(yang)程(cheng)提高,則循(xun)環泵所配(pei)電(dian)機功率將大幅提高,設備運行電(dian)費也隨之增加的(de)(de)問題。
自身壓(ya)(ya)力增壓(ya)(ya)系(xi)統結構包(bao)括出(chu)水(shui)口、固(gu)(gu)定(ding)(ding)法蘭、泵(beng)(beng)(beng)體(ti)、增壓(ya)(ya)裝(zhuang)置、電機轉(zhuan)子、吊環、防(fang)護罩(zhao)、水(shui)泵(beng)(beng)(beng)、固(gu)(gu)定(ding)(ding)基(ji)座(zuo)(zuo)(zuo)(zuo)、底座(zuo)(zuo)(zuo)(zuo)、加(jia)固(gu)(gu)件、控(kong)制閥、緊固(gu)(gu)件,所述(shu)出(chu)水(shui)口與(yu)(yu)(yu)(yu)固(gu)(gu)定(ding)(ding)法蘭相(xiang)連(lian)(lian)(lian)(lian)接,泵(beng)(beng)(beng)體(ti)與(yu)(yu)(yu)(yu)增壓(ya)(ya)裝(zhuang)置相(xiang)連(lian)(lian)(lian)(lian)接,增壓(ya)(ya)裝(zhuang)置由進(jin)(jin)水(shui)口、水(shui)管、負壓(ya)(ya)室、平(ping)(ping)衡(heng)固(gu)(gu)定(ding)(ding)盤、緊固(gu)(gu)支(zhi)架(jia)組成,進(jin)(jin)水(shui)口與(yu)(yu)(yu)(yu)水(shui)管相(xiang)連(lian)(lian)(lian)(lian)接,水(shui)管與(yu)(yu)(yu)(yu)負壓(ya)(ya)室相(xiang)連(lian)(lian)(lian)(lian)接,負壓(ya)(ya)室通(tong)過平(ping)(ping)衡(heng)固(gu)(gu)定(ding)(ding)盤保持平(ping)(ping)衡(heng),緊固(gu)(gu)支(zhi)架(jia)與(yu)(yu)(yu)(yu)泵(beng)(beng)(beng)體(ti)固(gu)(gu)定(ding)(ding)連(lian)(lian)(lian)(lian)接,防(fang)護罩(zhao)與(yu)(yu)(yu)(yu)水(shui)泵(beng)(beng)(beng)相(xiang)連(lian)(lian)(lian)(lian)接,水(shui)泵(beng)(beng)(beng)與(yu)(yu)(yu)(yu)固(gu)(gu)定(ding)(ding)基(ji)座(zuo)(zuo)(zuo)(zuo)相(xiang)連(lian)(lian)(lian)(lian)接,固(gu)(gu)定(ding)(ding)基(ji)座(zuo)(zuo)(zuo)(zuo)與(yu)(yu)(yu)(yu)底座(zuo)(zuo)(zuo)(zuo)緊固(gu)(gu)連(lian)(lian)(lian)(lian)接,底座(zuo)(zuo)(zuo)(zuo)上(shang)設(she)有加(jia)固(gu)(gu)件,緊固(gu)(gu)件)與(yu)(yu)(yu)(yu)底座(zuo)(zuo)(zuo)(zuo)固(gu)(gu)定(ding)(ding)連(lian)(lian)(lian)(lian)接。
由(you)于活(huo)(huo)塞(sai)(sai)體(ti)上端(duan)的(de)(de)(de)承壓(ya)(ya)(ya)面(mian)(mian)積(ji)比(bi)活(huo)(huo)塞(sai)(sai)體(ti)下(xia)端(duan)的(de)(de)(de)承壓(ya)(ya)(ya)面(mian)(mian)積(ji)減少了一根活(huo)(huo)塞(sai)(sai)桿的(de)(de)(de)面(mian)(mian)積(ji),因此,密(mi)(mi)封油壓(ya)(ya)(ya)力按(an)兩端(duan)承壓(ya)(ya)(ya)面(mian)(mian)積(ji)反比(bi)例地(di)(di)增(zeng)加,從而保證密(mi)(mi)封條件(jian)。設計(ji)(ji)活(huo)(huo)塞(sai)(sai)兩端(duan)承壓(ya)(ya)(ya)面(mian)(mian)積(ji)之(zhi)比(bi)時(shi),應根據所(suo)要求的(de)(de)(de)密(mi)(mi)封腔與釜內的(de)(de)(de)壓(ya)(ya)(ya)力差(cha)來(lai)計(ji)(ji)算。活(huo)(huo)塞(sai)(sai)桿上裝有(you)彈(dan)簧,調(diao)節彈(dan)簧的(de)(de)(de)壓(ya)(ya)(ya)縮量,使(shi)(shi)彈(dan)簧力正好抵消活(huo)(huo)塞(sai)(sai)上O形(xing)圈(quan)對缸壁的(de)(de)(de)摩(mo)擦力,以(yi)減少壓(ya)(ya)(ya)差(cha)計(ji)(ji)算值與實際之(zhi)間的(de)(de)(de)誤(wu)差(cha)。此外,活(huo)(huo)塞(sai)(sai)升降還有(you)指示(shi)平衡(heng)罐(guan)中液(ye)位(wei)的(de)(de)(de)作用(yong)。當密(mi)(mi)封液(ye)漏泄需要補充(chong)時(shi),可用(yong)手(shou)動(dong)泵加注密(mi)(mi)封液(ye)。在使(shi)(shi)用(yong)時(shi)需注意活(huo)(huo)塞(sai)(sai)應經(jing)常處于平衡(heng)罐(guan)的(de)(de)(de)下(xia)部位(wei)置,使(shi)(shi)活(huo)(huo)塞(sai)(sai)有(you)向(xiang)上移動(dong)的(de)(de)(de)余地(di)(di)。