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發布時間:2021-12-17 11:55:58 人氣:99242 來源(yuan):
河北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,用于雙端面河北機械密封,以解決現有的循(xun)環(huan)水(shui)泵(beng)的部分揚(yang)程不(bu)能克服系(xi)統(tong)的阻力(li),在(zai)循(xun)環(huan)泵(beng)流量不(bu)變的情況下,一旦(dan)循(xun)環(huan)泵(beng)的揚(yang)程提高(gao),則循(xun)環(huan)泵(beng)所配(pei)電機功率將大幅提高(gao),設備運(yun)行電費(fei)也隨之(zhi)增加的問(wen)題。
自身壓力增(zeng)壓系(xi)統結(jie)構包(bao)括出水(shui)(shui)口(kou)(kou)、固(gu)定(ding)(ding)(ding)(ding)法(fa)蘭、泵(beng)(beng)體、增(zeng)壓裝(zhuang)置(zhi)、電機轉子、吊環、防護(hu)罩、水(shui)(shui)泵(beng)(beng)、固(gu)定(ding)(ding)(ding)(ding)基(ji)座(zuo)(zuo)、底座(zuo)(zuo)、加固(gu)件(jian)、控制閥(fa)、緊(jin)(jin)固(gu)件(jian),所述出水(shui)(shui)口(kou)(kou)與固(gu)定(ding)(ding)(ding)(ding)法(fa)蘭相(xiang)(xiang)連(lian)接(jie)(jie),泵(beng)(beng)體與增(zeng)壓裝(zhuang)置(zhi)相(xiang)(xiang)連(lian)接(jie)(jie),增(zeng)壓裝(zhuang)置(zhi)由進(jin)水(shui)(shui)口(kou)(kou)、水(shui)(shui)管(guan)、負(fu)壓室、平(ping)衡(heng)固(gu)定(ding)(ding)(ding)(ding)盤、緊(jin)(jin)固(gu)支(zhi)架(jia)組成,進(jin)水(shui)(shui)口(kou)(kou)與水(shui)(shui)管(guan)相(xiang)(xiang)連(lian)接(jie)(jie),水(shui)(shui)管(guan)與負(fu)壓室相(xiang)(xiang)連(lian)接(jie)(jie),負(fu)壓室通過(guo)平(ping)衡(heng)固(gu)定(ding)(ding)(ding)(ding)盤保持(chi)平(ping)衡(heng),緊(jin)(jin)固(gu)支(zhi)架(jia)與泵(beng)(beng)體固(gu)定(ding)(ding)(ding)(ding)連(lian)接(jie)(jie),防護(hu)罩與水(shui)(shui)泵(beng)(beng)相(xiang)(xiang)連(lian)接(jie)(jie),水(shui)(shui)泵(beng)(beng)與固(gu)定(ding)(ding)(ding)(ding)基(ji)座(zuo)(zuo)相(xiang)(xiang)連(lian)接(jie)(jie),固(gu)定(ding)(ding)(ding)(ding)基(ji)座(zuo)(zuo)與底座(zuo)(zuo)緊(jin)(jin)固(gu)連(lian)接(jie)(jie),底座(zuo)(zuo)上設有加固(gu)件(jian),緊(jin)(jin)固(gu)件(jian))與底座(zuo)(zuo)固(gu)定(ding)(ding)(ding)(ding)連(lian)接(jie)(jie)。
由于(yu)活(huo)(huo)塞體上(shang)端(duan)的承壓(ya)(ya)(ya)面(mian)積(ji)比活(huo)(huo)塞體下端(duan)的承壓(ya)(ya)(ya)面(mian)積(ji)減(jian)少了(le)一根(gen)活(huo)(huo)塞桿的面(mian)積(ji),因(yin)此(ci),密封(feng)(feng)(feng)油壓(ya)(ya)(ya)力(li)按兩端(duan)承壓(ya)(ya)(ya)面(mian)積(ji)反比例地(di)增加,從(cong)而(er)保證(zheng)密封(feng)(feng)(feng)條件。設計(ji)(ji)(ji)活(huo)(huo)塞兩端(duan)承壓(ya)(ya)(ya)面(mian)積(ji)之比時(shi),應(ying)根(gen)據所要求的密封(feng)(feng)(feng)腔與(yu)釜(fu)內的壓(ya)(ya)(ya)力(li)差來計(ji)(ji)(ji)算。活(huo)(huo)塞桿上(shang)裝有(you)彈簧(huang),調節彈簧(huang)的壓(ya)(ya)(ya)縮量,使彈簧(huang)力(li)正好抵消活(huo)(huo)塞上(shang)O形圈對(dui)缸壁的摩擦力(li),以(yi)減(jian)少壓(ya)(ya)(ya)差計(ji)(ji)(ji)算值與(yu)實際之間的誤(wu)差。此(ci)外(wai),活(huo)(huo)塞升降還(huan)有(you)指示平衡罐中液位的作用。當密封(feng)(feng)(feng)液漏(lou)泄需要補(bu)充時(shi),可用手動泵加注密封(feng)(feng)(feng)液。在(zai)使用時(shi)需注意(yi)活(huo)(huo)塞應(ying)經常處于(yu)平衡罐的下部(bu)位置,使活(huo)(huo)塞有(you)向(xiang)上(shang)移動的余地(di)。