力士樂比例流量控制閥0811402620 FESX40CA-10/500LZ4M，德國REXROTH比例流量控制閥，購買進口液壓、氣動、自動化控制工業配件，認準“上海韋米機電設備有限公司”，保證產品原廠原裝，價格優惠，售后無憂，歡迎新老客戶咨詢采購！

 

電液比例閥是采用了比例控制技術,介于開關型液壓閥和電液伺服閥之間的-種液壓元件,在工業生產中獲得了廣泛的應用,輸入的電信號有模擬式和數字式兩大類,可以用于控制位置(轉角)、速度(轉速)、加速度(角加速度)、壓力(壓差)、力(力矩)等參數。電液比例閥等元件可以組成如下三類控制回路和系統
(1)電液比例壓力控制回路和系統。例如:用于帶鋼熱連軋機卷取機液壓輔助系統的電液比例壓力控制回路,用于板帶軋機輥縫控制的液壓推上系統電液比例壓力控制回路,用于帶材卷取設備恒張力的閉環電液比例壓力控制回路;
(2)電液比例流量控制回路和系統。例如:用于帶鋼熱連軋機精軋機平衡液壓系統的電液比例壓力控制回路,用于機床微進給的電液比例控制回路,用于旋壓機折板機同步的電液比例控制回路,用于電梯的電液比例控制回路;
(3)電液比例多參數控制回路和系統。例如:用于帶鋼熱連軋機精軋換輥液壓系統的電液比例壓力控制回路,用于液壓缸垂直配置而采用wI型閥芯的比例控制回路,用于熱軋鋼卷步進鏈式運輸機的速度、加減速度控制回路。

電液比例閥是閥內比例電磁鐵輸入電壓信號產生相應動作，使工作閥閥芯產生位移，閥口尺寸發生改變并以此完成與輸入電壓成比例壓力、流量輸出元件。閥芯位移也可以以機械、液壓或電形式進行反饋。電液比例閥具有形式種類多樣、容易組成使用電氣及計算機控制各種電液系統、控制精度高、安裝使用靈活以及抗污染能力強等多方面優點，應用領域日益拓寬。近年研發生產插裝式比例閥和比例多路閥充分考慮到工程機械使用特點，具有先導控制、負載傳感和壓力補償等功能。它出現對移動式液壓機械整體技術水平提升具有重要意義。特別是電控先導操作、無線遙控和有線遙控操作等方面展現了其良好應用前景。

電液比例閥種類和形式
電液比例閥包括比例流量閥、比例壓力閥、比例換向閥。工程機械液壓操作特點，以結構形式劃分電液比例閥主要有兩類:一類是螺旋插裝式比例閥，另一類是滑閥式比例閥。
滑閥式比例閥又稱分配閥，是移動式機械液壓系統基本元件之一，是能實現方向與流量調節復合閥。電液滑閥式比例多路閥是比較理想電液轉換控制元件，它保留了手動多路閥基本功能，還增加了位置電反饋比例伺服操作和負載傳感等先進控制手段。它是工程機械分配閥更新換代產品。
出于制造成本考慮和工程機械控制精度要求不高特點，--般比例多路閥內不配置位移感應傳感器，具有電子檢測和糾錯功能。，閥芯位移量容易受負載變化引起壓力波動影響，操作過程中要靠視覺觀察來保證作業完成。電控、遙控操作時更應注意外界千涉影響。近來，電子技術發展，人們越來越多采用內裝差動變壓器(LDVT)等位移傳感器構成閥芯位置移動檢測，實現閥芯位移閉環控制。這種由電磁比例閥、位置反饋傳感器、驅動放大器和其它電子電路組成高度集成比例閥，具有一定校正功能，可以有效克服一.般比例閥缺點，使控制精度到較大提高。

電液比例多路閥負載傳感與壓力補償技術
節約能量、降低油溫和提高控制精度，同時也使同步動作幾個執行元件運動時互不干擾，現較先進工程機械都采用了負載傳感與壓力補償技術。負載傳感與壓力補償是一一個很相似概念,都是利用負載變化引起壓力變化去調節泵或閥壓力與流量以適應系統工作需求。負載傳感對定量泵系統來講是將負載壓力負載感應油路引至遠程調壓溢流閥上，當負載較小時，溢流閥調定壓力也較小;負載較大，調定壓力也較大，但也始終存一定溢流損失。變量泵系統是將負載傳感油路引入到泵變量機構，使泵輸出壓力隨負載壓力升高而升高(始終為較小固定壓差)，使泵輸出流量與系統實際需要流量相等，無溢流損失，實現了節能。壓力補償是提高閥控制性能而采取一種保證措施。將閥口后負載壓力引入壓力補償閥，壓力補償閥對閥口前壓力進行調整使閥口前后壓差為常值，這樣節流口流量調節特性流經閥口流量大小就只與該閥口開度有關，而不受負載壓力影響。

工程機械電液比例閥先導控制與遙控
電液比例閥和其它專用器件技術進步使工程車輛擋位、轉向、制動和工作裝置等各種系統電氣控制成為現實。一般需要位移輸出機構可采用比例伺服控制手動多路閥驅動器完成。電氣操作具有響應快、布線靈活、可實現集成控制和與計算機接口容易等優點,現代工程機械液壓閥已越來越多采用電控先導控制電液比例閥(或電液開關閥)代替手動直接操作或液壓先導控制多路閥。采用電液比例閥(或電液開關閥)另一個顯著優點是工程車輛上可以大大減少操作手柄個數，這使駕駛室布置簡潔，能夠有效降低操作復雜性，對提高作業質量和效率都具有重要實際意義。
力士樂比例流量控制閥0811402620 FESX40CA-10/500LZ4M
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力士樂REXROTH二通流量控制閥2FRH
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力士樂REXROTH雙向流量控制閥2FRW
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R900461967 2FRW16-3X/100LB5ANW220-50NZ4SO125
R900392574 2FRW16-3X/100LB5ANW220-50NZ5
R900495598 2FRW16-3X/100LB5ANW220-50NZ5L
R900498328 2FRW16-3X/100LB5ANW240-50NZ4
R900477013 2FRW16-3X/100LB5AYG24NZ5L
R900461211 2FRW16-3X/160L5AJG24NZ4
R900462025 2FRW16-3X/160L5AJG24NZ5L
R900462622 2FRW16-3X/160L5AJG24NZ5LV
R900474212 2FRW16-3X/160L5AJG24Z5L
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R900350371 2FRW16-3X/160L5AJW110-50NZ4SO99
R900334579 2FRW16-3X/160L5AJW110-50NZ5L
R900463312 2FRW16-3X/160L5AJW220-50NZ4
R900465758 2FRW16-3X/160L5AJW220-50NZ4SO99
R900469003 2FRW16-3X/160L5AJW220-50Z4
R900418315 2FRW16-3X/160L5AJW220-60NZ4
R900463915 2FRW16-3X/160L5AJW240-50NZ4
R900472829 2FRW16-3X/160L5ANG110NZ5LV
R900461207 2FRW16-3X/160L5ANG24NZ4
R900461208 2FRW16-3X/160L5ANG24NZ5L
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R900462023 2FRW16-3X/160L5ANW110-50NZ4
R900461209 2FRW16-3X/160L5ANW110-50NZ5L
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R900462024 2FRW16-3X/160L5ANW127-50NZ4
R900461210 2FRW16-3X/160L5ANW220-50NZ4
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R900462294 2FRW16-3X/160L5ANW220-50NZ5L
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R900463489 2FRW16-3X/160LB5AJW220-60NZ5
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R900366963 2FRW10-3X/10LB6AJW110-50NZ4
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R900333455 2FRW10-3X/10LB6AJW220-50NZ4
R900591192 2FRW10-3X/10LB6AJW220-50NZ5L
R900510280 2FRW10-3X/10LB6AYG24N9Z4
R900485173 2FRW10-3X/10LB6AYG24NZ4
R900391740 2FRW10-3X/10LB6AYG24NZ4V
R900370941 2FRW10-3X/10LB6AYW110-50NDZL
R900479731 2FRW10-3X/10LB6AYW110-50NZ4
R900379716 2FRW10-3X/10LB6AYW110-60NZ4
R900400410 2FRW10-3X/10LB6AYW220-50NZ4
R900481819 2FRW10-3X/10LB6BYG24NEX
R900406626 2FRW10-3X/10LB6BYG24NEXFV
R900511457 2FRW10-3X/10LB6BYG24NZ5L
R900422323 2FRW10-3X/10LB6CJG24N9Z5L
R900229318 2FRW10-3X/10LB6EDG24N9K4
R900766450 2FRW10-3X/10LB6EJG24N9K4
R900229137 2FRW10-3X/10LB6EJW230N9K4
R900050969 2FRW10-3X/10LB6EJW230NZ4
R900989690 2FRW10-3X/10LB6EYG24N9K4
R987209581 2FRW10-3X/10LB6EYW110N9K4
R901141616 2FRW10-3X/10LB6EYW110N9K4V
R900423429 2FRW10-3X/10LBF5ANG24NZ5L
R900468147 2FRW10-3X/10LBP5AJG24NZ4
R900405979 2FRW10-3X/10LBP5AJG24NZ5LV
R900359253 2FRW10-3X/10LBP5AJW220-50NZ4
R900365362 2FRW10-3X/10LBP5ANG24NZ4
R900366794 2FRW10-3X/10LBP6ADG24NZ4
R900379695 2FRW10-3X/10LBP6AJG12NZ4
R900365907 2FRW10-3X/10LBP6AJG12NZ4V
R900415846 2FRW10-3X/10LBP6AJG24NZ4
R900374892 2FRW10-3X/10LBP6AJG24NZ5L
R900351452 2FRW10-3X/10LBP6AJW110-50NZ4
R900464767 2FRW10-3X/10LBP6AJW220-50NZ5L
R901260725 2FRW10-3X/10LBP6EJG24N9K4
R901144669 2FRW10-3X/10LBP6EYW100N9K4
R900485677 2FRW10-3X/10LP6AJG24ND
R900357364 2FRW10-3X/10LP6AJG24NZ4
R900487532 2FRW10-3X/10LP6AJG24NZ4SO115
R900065441 2FRW10-3X/10LP6AJG24NZ4V
R900587910 2FRW10-3X/10LP6AJW110-50NZ4SO115
R900383982 2FRW10-3X/10LP6AJW120-60NZ4V
R900404563 2FRW10-3X/10LP6AJW220-50NZ4
R900514106 2FRW10-3X/10LP6AYG24ND
R901253550 2FRW10-3X/10LP6EJG24N9K4V
R900994829 2FRW10-3X/10LP6EJW110N9K4
R901184776 2FRW10-3X/10LP6EJW110N9K4V
R900366423 2FRW10-3X/10Q6AYG24NZ4
R900401042 2FRW10-3X/16L
R900214885 2FRW10-3X/16L6AJG24NK4
R900339078 2FRW10-3X/16L6AJG24NZ4
R900467909 2FRW10-3X/16L6AJG24NZ5L
R900340200 2FRW10-3X/16L6AJG48NZ4
R900416901 2FRW10-3X/16L6AJW110-50NZ4
R900487461 2FRW10-3X/16L6AJW220-50NZ4
R900417304 2FRW10-3X/16L6AYG24NZ4
R900479212 2FRW10-3X/16L6AYG24NZ5L
R900408310 2FRW10-3X/16L6AYW110-50NZ4
R900478862 2FRW10-3X/16L6AYW110-50NZ5L
R900033359 2FRW10-3X/16L6AYW220-50NZ4
R900328297 2FRW10-3X/16L6AYW220-50NZ5L
R900220356 2FRW10-3X/16L6EJG24N9K4
R901400175 2FRW10-3X/16L6EJW230N9K4
R900225616 2FRW10-3X/16L6EYW110N9K4
R900498941 2FRW10-3X/16LB
R900029330 2FRW10-3X/16LB6AJW220-50NZ5L
R900496332 2FRW10-3X/16LB6AJG24NZ4
R900368868 2FRW10-3X/16LB6AJG24NZ4V
R900347219 2FRW10-3X/16LB6AJW110-50NZ4
R900476270 2FRW10-3X/16LB6AYG24NK4
R900431231 2FRW10-3X/16LB6AYG24NZ4
R900391739 2FRW10-3X/16LB6AYG24NZ4V
R900470560 2FRW10-3X/16LB6AYW110-50NZ4
R900487883 2FRW10-3X/16LB6AYW110-50NZ4B08
R900378712 2FRW10-3X/16LB6AYW110-50NZ5L
R900495687 2FRW10-3X/16LB6AYW110-50NZ5LV
R900406189 2FRW10-3X/16LB6AYW220-50NZ4
R900338191 2FRW10-3X/16LB6AYW220-60NZ4
R900384789 2FRW10-3X/16LB6CYG24N9Z5L
R901200813 2FRW10-3X/16LB6EJG24N9K4
R901002000 2FRW10-3X/16LB6EJW110N9K4
R901115002 2FRW10-3X/16LB6EYG24K4
R900748425 2FRW10-3X/16LB6EYG24N9K4
R900779100 2FRW10-3X/16LB6EYW110N9K4
R900415434 2FRW10-3X/16LBP6AJG24NZ4
R900355943 2FRW10-3X/16LBP6AJG24NZ4V
R900477179 2FRW10-3X/16LBP6AJG24NZ5L
R900772798 2FRW10-3X/16LBP6BJG12-12NEXFHVSO124
R900991969 2FRW10-3X/16LBP6EJG24N9DAL
R900204139 2FRW10-3X/16LBP6EJG24N9K4
R900731483 2FRW10-3X/16LBP6EJG96N9K4
R900990361 2FRW10-3X/16LBP6EJW110RN9DAL
R900785988 2FRW10-3X/16LBP6EJW230N9K4
R900709135 2FRW10-3X/16LBP6EYG24N9K4
R900443312 2FRW10-3X/16LP6AJW120-60NDAV
R900396134 2FRW10-3X/16LP6AYG24NZ4
R901118603 2FRW10-3X/16LP6EJW110N9DALV=CSA
R901013676 2FRW10-3X/1QBP6EJW230N9K4
力士樂REXROTH液壓元件：
力士樂REXROTH泵：軸向柱塞泵（軸向柱塞定量泵、軸向柱塞變量泵）、外嚙合齒輪泵、內嚙合齒輪泵。擺線泵、葉片泵、徑向柱塞泵、電液泵。
力士樂REXROTH馬達：徑向柱塞馬達、軸向柱塞馬達（軸向柱塞定量馬達、軸向柱塞變量馬達）、外嚙合齒輪馬達。
力士樂REXROTH開/關閥：單向閥（止回閥、截止閥、充液閥）、方向閥（方向座閥、方向滑閥、電磁球閥、換向閥、手動閥、機械閥、電磁閥、電液換向閥）、壓力閥（溢流閥、安全閥、減壓閥、壓力截止閥、壓力順序閥）、流量控制閥（節流閥、流量控制閥、二通流量控制閥）、二通插裝閥（插裝閥、邏輯閥、插裝閥控制蓋板）。
力士樂REXROTH比例、高頻響和伺服閥：比例方向閥（直動式比例方向閥，比例換向閥，電磁比例閥，電液比例閥，先導式比例方向閥）、比例壓力控制閥（比例溢流閥，比例減壓閥）、比例流量控制閥、高頻響方向閥（直動式高頻響應比例閥，高頻響應比例換向閥，高頻響應比例方向閥、高頻響應電液比例閥，先導式高頻響應方向閥）、方向伺服閥（伺服閥，四通伺服方向閥，電液比例伺服閥）、比例插裝閥（比例方向插裝閥、高頻響方向插裝閥，高頻響換向插裝閥）、高頻響比例伺服閥附件（壓力補償器，平衡閥，插頭接線盒，電纜）。
力士樂REXROTH油路塊和閥板：底板、蓋板、過渡板、疊加閥板、多站油路塊、模塊化閥板系統、截止閥塊、控制閥塊
力士樂REXROTH電子元件：閥放大器（比例閥放大器，高響應方向閥放大板，伺服閥放大板，插頭式放大器，開/關閥接線盒）、控制值放大器（模擬放大版）、軸調節（集成閥，軸控制器，P/Q閥、數字控制軸、嵌入式控制器，P/Q放大器、模擬定位模塊）、泵控制（軸向柱塞泵數字式電子控制裝置）、電子元件附件（機架和板卡插槽，電源和穩壓設備、測試和維修設備，監測模塊，連接插頭和電纜，接頭）。
力士樂REXROTH系統：泵系統（電動液壓控制系統，變速泵驅動裝置）。
力士樂REXROTH液壓站：標準型液壓站、緊湊型液壓站、靜默液壓站、驅動單元、夾緊和驅動模塊、電機/泵裝配件、蓄能器站、過濾設備、液壓站附件（衰減器）。
力士樂REXROTH傳感器和信號發送器：壓力傳感器，電子壓力開關、機械壓力開關、壓力指示單元（壓力表，充液壓力表）、浮球開關、溫度開關、油處理（顆粒監測器、含水量測量單元）、速度傳感器、信號編碼器、斜盤傾角傳感器。
力士樂REXROTH蓄能器：液壓氣動蓄能器（薄模式蓄能器，皮囊式蓄能器，柱塞式蓄能器）、蓄能器站、蓄能器截止塊（蓄能器切斷閥）。
力士樂REXROTH過濾器：空氣過濾器、油箱安裝過濾器/回油管路過濾器、嵌入式過濾器、可通斷的雙筒過濾器/嵌入式過濾器、油路塊安裝過濾器、吸油和替換插件過濾器、籃式濾網過濾器、過濾器材料、過濾器元件（過濾器濾芯）、過濾器附件（過濾器維護指示器，密封件）。
 

四、流量控制閥
流量控制閥用于控制或調節液壓系統或回路中工作液體流量大小的閥。如節流閥、調速閥、分集流閥等
大型鋼廠現場采用的主要流量控制閥，如：二通流量控制閥、疊加式流量控制閥、雙單向節流閥，單向閥、節流閥、液壓鎖。
1、Z2FS...型雙單向節流閥
1.結構分析
Z2FS16型閥是疊加式設計的雙路單向節流閥。該閥用于限制來自一個或兩個工作油口的主流量或控制流量。
兩個對稱設置的單向節流閥在一個方向上限定流量,(通過調整節流閥芯),在相反方向上允許自由流通。用于進口節流控制時, 油液從油口A流經節流口( 1 )到達工作油口。節流閥芯( 4.1 )可借助于調節螺釘( 5 )進行軸向調整,從而可以設定節流口(1 )同時,油口A中的油液通經道( 2 )到節流閥芯( 4.1 )的彈簧加載側(3 )產生的壓力與彈簧
共同作用,使節流閥芯( 4.1 )保持在節流位置,
油液從執行器回流推動節流閥芯( 4.2 ),允許油液自由流過。此時閥作為單向閥工作。根據型號(S或S2 ),節流口可以起進口或出口節流的控制作用。限制主流量為了改變執行器的速度(主流量限制),雙路單向節流閥是而安裝于方向控制閥和底板之間。限制控制流量對液控方向閥,雙路單向節流閥用作控制阻尼調節,在此情況下,它被安裝于主閥和控制閥之間。

五、比例控制閥
采用比例電磁鐵(或力矩馬達)將輸入信號轉換成力或閥的機械位移，使閥的輸出(壓力、流量)也按照其輸入量連續、成比例地進行控制的閥。
大型鋼廠現場使用的比例閥主要有下表中的幾種:伺服比例控制閥、比例控制閥、電液比例控制閥，比例閥，伺服閥。
1、4WRD E..型比例伺服控制閥(高頻響閥)
結構和功能
4WRDE型閥是三級高頻響方向閥。該閥可用于開環控制或閉環調節液流的大小和方向，但主要用于閉環調節回路中。
閥主要由下列部分組成:
1.二級先導控制閥由力矩馬達( 1 )和由噴嘴擋板閥構成的液壓放大器( 5),和用作流量放大級的閥芯襯套組件(6 )(用以控制第三級(7 ))組成。
2.第三級(7)用于流量控制。
3.感應式位移傳感器( 8),連接第三級主閥芯( 10)的磁芯(9 )
通過內置電子放大器實現閥閉環控制信號邏輯連接,位置檢測系統反饋,和先導閥的控制。
給定值/實際值比較得到的差動電壓經過電子控制器放大, 并作為控制偏差量傳遞到閥的一級。這個信號推動兩個控制噴嘴( 3.1, 3.2) 之間的擋板( 2)因而在兩個控制腔(11.1.11.2)產生了壓差。控制閥芯(4 )因此被推動,并通過相應的液流流到彈簧腔(12.1or12.2)閥芯(10)和帶磁芯(9)的位移傳感器(8)-直運動,直到實際值和給定值信號再一次相等。在控制條件下;主閥芯( 10 )一直被保持在給定值所對應的位置。
閥芯行程和給定值成正比。通過閥芯( 10 )相對于控制邊( 13 )的位置,形成相應的與流量成正比的閥口開度。
閥的動態特性通過電子放大器優化。電子放大器內置于閥上(振蕩器,解調器)
零點調節由廠家預先設定,通過閉環控制電子放大器內的電位器, 零點能在名義行程士10%范圍內調整。移去閥蓋尾部的插頭,可以對內置閉環電子放大器進行操作。