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發布時間:2021-12-17 11:55:58 人氣:99173 來源:
鄲城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,用于雙端面鄲城機械密封,以解決現(xian)有的(de)循(xun)環(huan)水泵(beng)的(de)部分揚(yang)程不(bu)能(neng)克服(fu)系(xi)統(tong)的(de)阻力(li),在循(xun)環(huan)泵(beng)流量不(bu)變的(de)情況下(xia),一(yi)旦(dan)循(xun)環(huan)泵(beng)的(de)揚(yang)程提(ti)(ti)高(gao)(gao),則循(xun)環(huan)泵(beng)所(suo)配電(dian)機功率將大幅(fu)提(ti)(ti)高(gao)(gao),設備運行電(dian)費也隨(sui)之增加的(de)問題。
自身壓(ya)(ya)力增壓(ya)(ya)系(xi)統結構包括出水(shui)(shui)(shui)(shui)(shui)口(kou)、固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)法蘭、泵(beng)體、增壓(ya)(ya)裝(zhuang)置、電機轉子、吊(diao)環、防護罩、水(shui)(shui)(shui)(shui)(shui)泵(beng)、固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)基(ji)座(zuo)、底(di)座(zuo)、加(jia)固(gu)(gu)(gu)(gu)(gu)件(jian)、控制閥(fa)、緊(jin)固(gu)(gu)(gu)(gu)(gu)件(jian),所述出水(shui)(shui)(shui)(shui)(shui)口(kou)與(yu)(yu)固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)法蘭相連(lian)(lian)接,泵(beng)體與(yu)(yu)增壓(ya)(ya)裝(zhuang)置相連(lian)(lian)接,增壓(ya)(ya)裝(zhuang)置由進(jin)水(shui)(shui)(shui)(shui)(shui)口(kou)、水(shui)(shui)(shui)(shui)(shui)管、負壓(ya)(ya)室(shi)、平(ping)衡(heng)(heng)固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)盤、緊(jin)固(gu)(gu)(gu)(gu)(gu)支架組成(cheng),進(jin)水(shui)(shui)(shui)(shui)(shui)口(kou)與(yu)(yu)水(shui)(shui)(shui)(shui)(shui)管相連(lian)(lian)接,水(shui)(shui)(shui)(shui)(shui)管與(yu)(yu)負壓(ya)(ya)室(shi)相連(lian)(lian)接,負壓(ya)(ya)室(shi)通過平(ping)衡(heng)(heng)固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)盤保持平(ping)衡(heng)(heng),緊(jin)固(gu)(gu)(gu)(gu)(gu)支架與(yu)(yu)泵(beng)體固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)連(lian)(lian)接,防護罩與(yu)(yu)水(shui)(shui)(shui)(shui)(shui)泵(beng)相連(lian)(lian)接,水(shui)(shui)(shui)(shui)(shui)泵(beng)與(yu)(yu)固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)基(ji)座(zuo)相連(lian)(lian)接,固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)基(ji)座(zuo)與(yu)(yu)底(di)座(zuo)緊(jin)固(gu)(gu)(gu)(gu)(gu)連(lian)(lian)接,底(di)座(zuo)上設(she)有加(jia)固(gu)(gu)(gu)(gu)(gu)件(jian),緊(jin)固(gu)(gu)(gu)(gu)(gu)件(jian))與(yu)(yu)底(di)座(zuo)固(gu)(gu)(gu)(gu)(gu)定(ding)(ding)連(lian)(lian)接。
由于活(huo)(huo)塞(sai)(sai)體上端的(de)(de)(de)承壓(ya)(ya)面(mian)(mian)積比(bi)(bi)活(huo)(huo)塞(sai)(sai)體下端的(de)(de)(de)承壓(ya)(ya)面(mian)(mian)積減少了(le)一根活(huo)(huo)塞(sai)(sai)桿的(de)(de)(de)面(mian)(mian)積,因此(ci),密(mi)(mi)封(feng)(feng)油壓(ya)(ya)力按(an)兩端承壓(ya)(ya)面(mian)(mian)積反比(bi)(bi)例地增(zeng)加,從而保證密(mi)(mi)封(feng)(feng)條件。設計(ji)活(huo)(huo)塞(sai)(sai)兩端承壓(ya)(ya)面(mian)(mian)積之比(bi)(bi)時,應(ying)根據(ju)所(suo)要(yao)求的(de)(de)(de)密(mi)(mi)封(feng)(feng)腔與釜內(nei)的(de)(de)(de)壓(ya)(ya)力差來(lai)計(ji)算。活(huo)(huo)塞(sai)(sai)桿上裝有(you)彈(dan)(dan)簧,調節彈(dan)(dan)簧的(de)(de)(de)壓(ya)(ya)縮量,使彈(dan)(dan)簧力正好(hao)抵(di)消活(huo)(huo)塞(sai)(sai)上O形圈(quan)對(dui)缸壁(bi)的(de)(de)(de)摩擦力,以減少壓(ya)(ya)差計(ji)算值與實(shi)際(ji)之間的(de)(de)(de)誤差。此(ci)外(wai),活(huo)(huo)塞(sai)(sai)升降還有(you)指示平(ping)衡罐(guan)中液位(wei)(wei)的(de)(de)(de)作用(yong)。當密(mi)(mi)封(feng)(feng)液漏(lou)泄需要(yao)補充(chong)時,可(ke)用(yong)手動泵加注密(mi)(mi)封(feng)(feng)液。在使用(yong)時需注意活(huo)(huo)塞(sai)(sai)應(ying)經(jing)常處于平(ping)衡罐(guan)的(de)(de)(de)下部位(wei)(wei)置,使活(huo)(huo)塞(sai)(sai)有(you)向上移動的(de)(de)(de)余(yu)地。