詳細介紹
威格士柱塞泵工作流程:
威格士柱塞泵柱塞往復(fù)運動總行程L是不變的,由凸輪的升程決定。柱塞每循環(huán)的供油量大小取決于供油行程,供油行程不受凸輪軸控制是可變的。供油開始時刻不隨供油行程的變化而變化。轉(zhuǎn)動柱塞可改變供油終了時刻,從而改變供油量。柱塞泵工作時,在噴油泵凸輪軸上的凸輪與柱塞彈簧的作用下,迫使柱塞作上、下往復(fù)運動,從而完成泵油任務(wù),泵油過程可分為以下三個階段。
進油過程
當凸輪的凸起部分轉(zhuǎn)過去后,在彈簧力的作用下,柱塞向下運動,柱塞上部空間(稱為泵油室)產(chǎn)生真空度,當柱塞上端面把柱塞套上的進油孔打開后,充滿在油泵上體油道內(nèi)的柴油經(jīng)油孔進入泵油室,柱塞運動到下止點,進油結(jié)束。
供油過程
當凸輪軸轉(zhuǎn)到凸輪的凸起部分頂起滾輪體時,柱塞彈簧被壓縮,柱塞向上運動,燃油受壓,一部分燃油經(jīng)油孔流回噴油泵上體油腔。當柱塞頂面遮住套筒上進油孔的上緣時,由于柱塞和套筒的配合間隙很小(0.0015-0.0025mm)使柱塞頂部的泵油室成為一個密封油腔,柱塞繼續(xù)上升,泵油室內(nèi)的油壓迅速升高,泵油壓力>出油閥彈簧力+高壓油管剩余壓力時,推開出油閥,高壓柴油經(jīng)出油閥進入高壓油管,通過噴油器噴入燃燒室。
回油過程
柱塞向上供油,當上行到柱塞上的斜槽(停供邊)與套筒上的回油孔相通時,泵油室低壓油路便與柱塞頭部的中孔和徑向孔及斜槽溝通,油壓驟然下降,出油閥在彈簧力的作用下迅速關(guān)閉,停止供油。此后柱塞還要上行,當凸輪的凸起部分轉(zhuǎn)過去后,在彈簧的作用下,柱塞又下行。此時便開始了下一個循環(huán)。
柱塞泵以一個柱塞為原理介紹,一個柱塞泵上有兩個單向閥,并且方向相反,柱塞向一個方向運動時缸內(nèi)出現(xiàn)負壓,這時一個單向閥打開液體被吸入缸內(nèi),柱塞向另一個方向運動時,將液體壓縮后另一個單向閥被打開,被吸入缸內(nèi)的液體被排出。這種工作方式連續(xù)運動后就形成了連續(xù)供油 。
VICKERS柱塞泵的機械分類:
①軸向柱塞泵
軸向柱塞泵是活塞或柱塞的往復(fù)運動方向與缸體中心軸平行的柱塞泵。軸向柱塞泵是利用與傳動軸平行的柱塞在柱塞孔內(nèi)往復(fù)運動所產(chǎn)生的容積變化來進行工作的。由于柱塞和柱塞孔都是圓形零件,加工時可以達到很高的精度配合,因此容積效率高,運轉(zhuǎn)平穩(wěn),流量均勻性好,噪聲低,工作壓力高等優(yōu)點,但對液壓油的污染較敏感,結(jié)構(gòu)較復(fù)雜,造價較高。
②直軸斜盤式柱塞泵
直軸斜盤式柱塞泵分為壓力供油型的自吸油型兩種。壓力供油型液壓泵大都采用有氣壓的油箱,也有液壓泵本身帶有補油分泵向液壓泵進油口提供壓力油的。自吸油型液壓泵的自吸油能力很強,無需外力供油。靠氣壓供油的液壓油箱,在每次啟動機器后,必須等液壓漬箱達到使用氣壓后,才能操作機械。如液壓油箱的氣壓不足時就擔任機器,會對液壓泵內(nèi)的與滑鞭造成拉脫現(xiàn)象,出會造成泵體內(nèi)回程板與壓板的非正常磨損。
③徑向柱塞泵
徑向柱塞泵可分為閥配流與軸配流兩大類。閥配流徑向柱塞泵存在故障率高、效率低等缺點。上70、80年代發(fā)展的軸配流徑向柱塞泵克服了閥配流徑向柱塞泵的不足。由于徑向泵結(jié)構(gòu)上的特點,陜定了軸配流徑向柱塞泵比軸向柱塞泵耐沖擊、壽命長、控制精度高。變量行程短泵的變量是在變量柱塞和限位柱塞作用下,改變定子的偏心距實現(xiàn)的,而定于的zui大偏心距為5—9mm(根據(jù)排量大小不同),變量行程很短。且變量機構(gòu)設(shè)計為高壓操縱,由控制閥進行控制。故該泵的響應(yīng)速度快。徑向結(jié)構(gòu)設(shè)計克服了如軸向柱塞泵滑靴偏磨的問題。使其抗沖擊能力大幅度提高。
④液壓柱塞泵
液壓柱塞泵靠氣壓供油的液壓油箱,在每次啟動機器后,必須等液壓漬箱達到使用氣壓后,才能操作機械。直軸斜盤式柱塞泵分為壓力供油型的自吸油型兩種。壓力供油型液壓泵大都采用有氣壓的油箱,也有液壓泵本身帶有補油分泵向液壓泵進油口提供壓力油的。自吸油型液壓泵的自吸油能力很強,無需外力供油。對于自吸油型柱塞泵,液壓油箱內(nèi)的油液不得低于油標下限,要保持足夠數(shù)量的液壓油。液壓油的清潔度越高,液壓泵的使用壽命越長。
威格士柱塞泵的特電和優(yōu)點:
【1】泵的壽命長
【2】泵的噪聲低
【3】進口和出口的壓力表
【4】接口和可調(diào)整的zui大
【5】排量擋塊-標準
【6】壓力脈動小得驚人,僅4%
【7】安裝和使用成本低
【8】維護簡單
【9】設(shè)備設(shè)計的靈活性強
【10】體積小,節(jié)省空間
【11】提升無泄漏系統(tǒng)設(shè)計
美國VICKERS柱塞泵系列型號:
PVM098MR09GS02AAB21240000A0A
PVM098MR09GS02AAB23000000A0A
PVM098MR09GS02AAB28000000A0A
PVM098MR09GS02AAC07000000A0A
PVM098MR09GS02AAC07110000A0A
PVM098MR09GS02AAC15000000A0A
PVM098MR09GS02AAC15200000A0A
PVM098MR09GS02AAC21240000A0A
PVM098MR09GS02AAC23000000A0A
PVM098MR09GS02AAC28000000A0A
PVM098MR09GS02AAE07000000A0A
PVM098MR09GS02AAE07110000A0A
PVM098MR09GS02AAE15000000A0A
PVM098MR09GS02AAE15200000A0A
PVM098MR09GS02AAE21000000A0A
PVM098MR09GS02AAE21240000A0A
PVM098MR09GS02AAE23000000A0A
PVM098ER11ES02AAC28200000A0A
PVM098ER11GS02AAA28000000A0A
PVM098ER12GS02AAC2824000EA0A
PVM098ER18HS04AAA23000000A0A
PVM098ER18HS04AAA28000000A0A
PVM098ER19FS04AAA28000000A0A
PVM098ER19FS04ASA28000000A0A
PVM098ML11GS02AAC25200000A0A
PVM098ML11GS02ABC152600G0A0A
PVM098ER09GS02AAA07000000A0A
PVM098ER09GS02AAA07110000A0A
PVM098ER09GS02AAA15000000A0A
PVM098ER09GS02AAA15200000A0A
PVM098ER09GS02AAA21000000A0A
PVM098ER09GS02AAA21240000A0A
PVM098ER09GS02AAA23000000A0A
PVM098ER09GS02AAA28000000A0A
PVM098ER09GS02AAB07000000A0A
PVM098ER09GS02AAB07110000A0A
PVM098ER09GS02AAB15000000A0A
PVM098ER09GS02AAB15200000A0A
PVM098ER09GS02AAB21000000A0A
PVM098ER09GS02AAB21240000A0A
PVM098ER09GS02AAB23000000A0A
PVM098ER09GS02AAB28000000A0A
PVM098ER09GS02AAC07000000A0A
PVM098ER09GS02AAC07110000A0A
PVM098ER09GS02AAC15000000A0A
PVM098ER09GS02AAC15200000A0A
PVM098ER09GS02AAC21000000A0A
PVM098ER09GS02AAC21240000A0A
PVM098ER09GS02AAC23000000A0A
PVM098ER09GS02AAC28000000A0A
PVM098ER09GS02AAC28110000A0A
PVM098ER09GS02AAC28200000A0A
PVM098ER09GS02AAE00200000A0A
PVM098ER09GS02AAE07000000A0A
PVM098ER09GS02AAE07110000A0A
PVM098ER09GS02AAE15000000A0A
PVM098ER09GS02AAE15200000A0A
PVM098ER09GS02AAE21000000A0A
PVM098ER09GS02AAE21240000A0A
PVM098ER09GS02AAE23000000A0A
PVM098ER09GS02AAE28000000A0A
PVM098ER09GS04AAA28000000A0A
PVM098ER09GS04AAC28200000A0A
PVM098ER09GS04AAE00200000A0A
PVM098ER10GS02AAA2300000AAOA
PVM098ER10GS02AAA28000000A0A
PVM098MR09GS02AAE28000000A0A
VICKERS威格士柱塞泵PVM106型號:
PVM106ER09GS02AAA23000000A0A
PVM106ER09GS02ASF00200000A0A
PVM106ER10GS02AAF0020000EA0A
PVM106ER11GS02AAF00200000A0A
PVM106ER09GS02AAA07000000A0A
PVM106ER09GS02AAA07110000A0A
PVM106ER09GS02AAA15000000A0A
PVM106ER09GS02AAA15200000A0A
PVM106ER09GS02AAA21000000A0A
PVM106ER09GS02AAA21240000A0A
PVM106ER09GS02AAA23000000A0A
PVM106ER09GS02AAA28000000A0A
PVM106ER09GS02AAB07000000A0A
PVM106ER09GS02AAB07110000A0A
PVM106ER09GS02AAB15000000A0A
PVM106ER09GS02AAB15200000A0A
PVM106ER09GS02AAB21000000A0A
PVM106ER09GS02AAB21240000A0A
PVM106ER09GS02AAB23000000A0A
PVM106ER09GS02AAB28000000A0A
PVM106ER09GS02AAC07000000A0A
PVM106ER09GS02AAC07110000A0A
PVM106ER09GS02AAC15000000A0A
PVM106ER09GS02AAC15200000A0A
PVM106ER09GS02AAC21000000A0A
PVM106ER09GS02AAC23000000A0A
PVM106ER09GS02AAC28000000A0A
PVM106ER09GS02AAE07000000A0A
PVM106ER09GS02AAE07110000A0A
PVM106ER09GS02AAE15000000A0A
PVM106ER09GS02AAE15200000A0A
PVM106ER09GS02AAE21000000A0A
PVM106ER09GS02AAE23000000A0A
PVM106ER09GS02AAE28000000A0A
PVM106ER10GS02AAF0020000EA0A
PVM106MR09GS02AAC2320000000A
VICKERS威格士柱塞泵PVM131型號:
PVM131EL09ES02AAC07200000A0A
PVM131EL11ES02AAC28200000A0A
PVM131EL12ES02AAC2820000DA0A
PVM131ER09ES02AAC07200000A0A
PVM131ER09GS02AAA28000000A0A
PVM131ER09GS02AAC23200000A0A
PVM131ER09GS02AAE00200000A0A
PVM131ER09GS04AAE00200000A0A
PVM131ER10GS02AAA28000000A0A
PVM131ER10GS02AAB15200000A0A
PVM131ER10GS02AAB21000000A0A
PVM131ER10GS02AAB21240000A0A
PVM131ER10GS02AAB23000000A0A
PVM131ER10GS02AAB2320000EA0A
PVM131ER10GS02AAB28000000A0A
PVM131ER10GS02AAB28110000A0A
PVM131ER10GS02AAC07000000A0A
PVM131ER10GS02AAC07110000A0A
PVM131ER10GS02AAC15000000A0A
PVM131ER10GS02AAC21000000A0A
PVM131ER10GS02AAC21240000A0A
PVM131ER10GS02AAC23000000A0A
PVM131ER10GS02AAC28000000A0A
PVM131ER10GS02AAC28200000A0A
PVM131ER10GS02AAE07000000A0A
PVM131ER10GS02AAE07110000A0A
PVM131ER10GS02AAE15200000A0A
PVM131ER10GS02AAE21000000A0A
PVM131ER10GS02AAE21240000A0A
PVM131ER10GS02AAE28000000A0A
PVM131ER10GS02AAB2320000EA0A
PVM131ER10GS02AAB28110000A0A
PVM131ER10GS02AAC28200000A0A
PVM131ER10GS04AAA28000000A0A
PVM131ER11ES02AAC28200000A0A
PVM131ER13GS02AAA07000000A0A
PVM131ER13GS02AAA28000000A0A
PVM131ER13GS02AAC2820000EA0A
PVM131ER13GS02AAF0020000EA0A
PVM131ER13JS02AAA21000000A0A
PVM131ML10GS02AAC28200000A0A
PVM131ML11GS02AAC28200000A0A
PVM131ER09GS02AAA28000000A0A
PVM131ER09GS02AAC23200000A0A
PVM131ER10GS02AAA07000000A0A
PVM131ER10GS02AAA07110000A0A
PVM131ER10GS02AAA15000000A0A
PVM131ER10GS02AAA15200000A0A
PVM131ER10GS02AAA21000000A0A
PVM131ER10GS02AAA21240000A0A
PVM131ER10GS02AAA23000000A0A
PVM131ER10GS02AAA28000000A0A
PVM131ER10GS02AAB07000000A0A
PVM131ER10GS02AAB07110000A0A
PVM131ER10GS02AAB15000000A0A
VICKERS威格士柱塞泵PVM141型號:
PVM141ER09ES02AAC07200000A0A
PVM141MR10GS02AAE23000000A0A
PVM141MR10GS02AAE28000000A0A
PVM141MR10GS02AAA21240000A0A
PVM141MR10GS02AAA23000000A0A
PVM141MR10GS02AAA28000000A0A
PVM141MR10GS02AAB07000000A0A
PVM141MR10GS02AAB07110000A0A
PVM141MR10GS02AAB15000000A0A
PVM141MR10GS02AAB15200000A0A
PVM141MR10GS02AAB21000000A0A
PVM141MR10GS02AAB21240000A0A
PVM141MR10GS02AAB23000000A0A
PVM141ER10GS02AAA23000000A0A
PVM141ER10GS02AAC23200000A0A
PVM141ER10GS02AAF00200000A0A
PVM141MR10GS02AAA07000000A0A
PVM141MR10GS02AAA15200000A0A
PVM141MR10GS02AAA21000000A0A
PVM141MR10GS02AAC21000000A0A
PVM141MR10GS02AAC21240000A0A
PVM141MR10GS02AAC23000000A0A
PVM141MR10GS02AAC28000000A0A
PVM141MR10GS02AAE07000000A0A
PVM141MR10GS02AAE07110000A0A
PVM141MR10GS02AAE15000000A0A
PVM141MR10GS02AAE15200000A0A
PVM141MR10GS02AAE21000000A0A
PVM141MR10GS02AAE21240000A0A
PVM141MR10GS02AAB28000000A0A
PVM141MR10GS02AAC07000000A0A
PVM141MR10GS02AAC07110000A0A
PVM141MR10GS02AAC15000000A0A
PVM141MR10GS02AAC15200000A0A
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