R901102706 HED8OA-2X/100K14

R901102706 HED8OA-2X/100K14
壓力繼電器（亦稱壓力開關），是利用液體壓力信號控制電器觸點的啟閉的液壓電氣轉換元件。當控制壓力達到設定壓力時，發出電信號，控制電氣元件（如電磁鐵、繼電器等）動作，實現油路轉換、泵的加載或卸荷、執行元件的順序動作、系統的安全保護和連鎖等功能。

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HED8OA-2X/100K14     HED8OA-2X/100K14    HED8OA-2X/100K14
HED8OA-2X/100K14     HED8OA-2X/100K14    HED8OA-2X/100K14

壓力繼電器主要用于對液體或氣體壓力的高低進行檢測并發出開關量信號，以控制電磁閥、液壓泵等設備對壓力的高低進行控制。

壓力繼電器主要由壓力傳送裝置和微動開關等組成，液體或氣體壓力經壓力入口推動橡皮膜和滑桿，克服彈簧反力向上運動，當壓力達到擬定壓力時，觸動微動開關，發出控制信號，旋轉調壓螺母可以改變擬定壓力。

武漢億嘉隆機電設備有限公司
電話027-87584899
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袁榮 13277916406 18971564403 劉菲
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先導控制閥主要由殼體（1），比例電磁鐵（2 和 3），控制閥芯（4）和彈簧（5 和 6）組成。
在非工作情況下，兩個執行機構都連接到油箱。如果兩個線圈中的一個（2 或 3）勵磁，則磁力會將閥的控制閥芯（4）向彈簧（5 或 6）移動。一旦超過遮蓋區域，便會阻斷兩個執行機構中的一處連接，轉而連接壓力腔。流體從 P 流向主級的控制腔。
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壓力繼電器常應用在蓄能器保壓的液壓回路中，主換向閥動作使液壓缸工作壓緊工作，油路壓力升高，壓力繼電器發信使二位二通換向閥通電，液壓泵卸載，單向閥自動關閉，液壓缸由蓄能器保壓。
某廠壓機的液壓系統經過大修，由于修理后壓力繼電器的設定壓力高于溢流閥的設定壓力，當溢流閥開始溢流時，壓力繼電器還沒有動作。
這樣的系統能夠正常工作，但壓力繼電器、蓄能器、二通換向閥形同虛設，起不到泵在保壓時卸載的功能，相當于開泵齙牙，浪費大量能源。 這是壓力繼電器的一種錯誤的使用方法。
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