DPGKE* 超高響應(yīng) 比例方向閥(先導(dǎo)式)
先導(dǎo)式2級比例方向閥，帶主閥芯和集成電子元件(OBE)的電氣位置回饋
控制流體的尺寸和方向
通過比例線圈起動
用于底板安裝
油口安裝面符合 ISO 4401 (額定規(guī)格尺寸10到35)
底板符合目錄規(guī)格，請參閱第15至18頁
電氣位置回饋
彈簧對中主閥芯
先導(dǎo)控制是單級比例方向控制閥
帶閉環(huán)位置控制的主級
集成控制電子元件
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先導(dǎo)控制閥類型DPGKE-6-3C40-D24 (第1級) 先導(dǎo)控制閥是直動式比例閥。設(shè)計(jì)并優(yōu)化控制邊幾何形狀，將其用作比例方向閥類型 DPGKE 的先導(dǎo)控制閥。
比例線圈是帶可拆卸線圈的耐壓密閉油浸式直流線圈。它們可將電流按比例轉(zhuǎn)換為機(jī)械力。電流強(qiáng)度的增加會使線圈力適當(dāng)提高。設(shè)置的線圈力在整個(gè)控制行程內(nèi)保持不變。
先導(dǎo)控制閥基本由閥體(1)，比例線圈(2和3)，閥芯(4)和彈簧(5和6)組成。在斷電情況下，兩個(gè)執(zhí)行機(jī)構(gòu)油口都連接到油箱。如果兩個(gè)線圈中的一個(gè)(2或3)斷電， 則線圈力將閥芯(4)向彈簧(5或6)移動。一旦越過遮蓋區(qū)域，則會堵塞兩個(gè)執(zhí)行機(jī)構(gòu)油口之一與油箱的連接，并建立連接壓力腔。流體從 P 流向主級的控制腔。
閥門特點(diǎn)
類型DPGKE閥是2級比例方向控制閥。它們控制流體的尺寸和方向。
主級由閉環(huán)位置控制，以便閥芯位置也獨(dú)立于較大流量的液動力。這種閥基本由先導(dǎo)控制閥(1)，閥體(8)，主閥芯(7)，蓋 (5和6)，對中彈簧(4)，感應(yīng)式位置感測器(9) 和減壓閥(3)組成。
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如果沒有施加輸入信號，則主閥芯 (7)就會被對中彈簧(4)保持在位置。蓋 (5和6)中的兩個(gè)控制腔通過閥芯 (2)連接到油箱上。
主閥芯(7)通過感應(yīng)式位置傳感器(9)連接到合適的控制電子元件上。主閥芯(7)的位置改變以及放大器求和點(diǎn)控制值的改變，都能生成差動電壓。
借助控制值/實(shí)際值比較，通過電子元件識別可能的控制偏差，且電流施加于先導(dǎo)閥(1)的比例線圈。
流動力轉(zhuǎn)而起動控制閥芯。通過閥芯控制節(jié)流面提供的流量會移動主閥芯。
連接感應(yīng)式位置感測器(9)鐵芯的主閥芯(7)會一直移動，直到實(shí)際值與控制值相等。在閉環(huán)控制情況下，主閥芯 (7)被強(qiáng)制平衡，且保持在此閉環(huán)控制位置。
閥芯行程和控制開口與控制值成比例改變。
控制電子元件集成到閥中。通過匹配閥和電子元件，產(chǎn)品系列種類的數(shù)量一直很少。
防止油箱管路排空；在適當(dāng)?shù)陌惭b條件下，應(yīng)安裝一個(gè)背壓閥(背壓約為2 bar)。
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