Ovation 9942A34G17開(kāi)關(guān)量輸出電子模件

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瑞昌明盛進(jìn)出口貿(mào)易有限公司
主營(yíng)DCS控制系統(tǒng)備件，PLC系統(tǒng)備件及機(jī)器人系統(tǒng)備件，
優(yōu)勢(shì)品牌：Allen Bradley、BentlyNevada、ABB、Emerson Ovation、Honeywell DCS、Rockwell ICS Triplex、FOXBORO、Schneider PLC、GE Fanuc、Motorola、HIMA、TRICONEX、Prosoft等各種進(jìn)口工業(yè)零部件 Ovation 9942A34G17開(kāi)關(guān)量輸出電子模件

生產(chǎn)工藝
恒速恒壓泵主要由高壓柱塞泵泵體、絲杠傳動(dòng)機(jī)構(gòu)、齒輪傳動(dòng)機(jī)構(gòu)、氣動(dòng)閥、儲(chǔ)液罐、伺服電機(jī)及驅(qū)動(dòng)器等部分組成。恒速恒壓泵分為單泵和雙泵，本文主要講述雙泵。恒速恒壓雙缸泵主要分為單缸運(yùn)行、雙缸串聯(lián)和雙缸并聯(lián)三種工作模式，每一種工作模式可分為恒流和恒壓兩種工作方式。
1）單缸運(yùn)行的工作原理如下：以A泵運(yùn)行為例，顯示A泵各項(xiàng)參數(shù)，對(duì)A泵進(jìn)行進(jìn)退泵操作。A泵進(jìn)泵，A泵出口閥打開(kāi)，A泵吸口閥關(guān)閉，壓力達(dá)到保護(hù)壓力時(shí)停泵，位置達(dá)到上限位時(shí)停泵。A泵退泵，A泵出口閥關(guān)閉，A泵吸口閥打開(kāi)，位置達(dá)到下限位時(shí)停泵。若A泵有壓力，退泵時(shí)A泵吸口閥要在壓力退至零時(shí)打開(kāi)。進(jìn)退泵可實(shí)時(shí)進(jìn)行切換，B泵單缸運(yùn)行同A泵。

圖2.單缸運(yùn)行的工作原理
雙缸運(yùn)行的工作方式是運(yùn)用多也是重要形式，即雙缸串聯(lián)恒壓和雙缸串聯(lián)恒流，兩個(gè)缸體相互配合和切換，以達(dá)到連續(xù)供液的目的。
2）雙缸串聯(lián)恒壓模式。先把兩個(gè)泵退到底，兩個(gè)泵都退泵時(shí)，兩個(gè)吸口閥都打開(kāi)，兩個(gè)出口閥都關(guān)閉，任何一個(gè)泵體到底后都需等待10秒鐘，以利于液體充分吸入泵中，然后關(guān)閉吸口閥，進(jìn)入準(zhǔn)備工作狀態(tài)。以A泵先啟動(dòng)為例，A泵出口閥打開(kāi)并進(jìn)泵，B泵實(shí)時(shí)跟蹤A泵壓力。當(dāng)A泵運(yùn)行至上限位時(shí)開(kāi)始換泵，B泵出口閥打開(kāi)，A泵出口閥關(guān)閉，由B泵提供壓力恒定的動(dòng)力源。A泵退泵，當(dāng)A泵中壓力減小至零時(shí)，打開(kāi)A泵進(jìn)口閥，繼續(xù)退泵（A泵退泵速度要大于B泵進(jìn)泵速度）吸液，A泵退至下限位后停泵并等待10秒鐘，然后關(guān)閉其吸口閥。然后A泵開(kāi)始跟蹤B泵壓力（要確保在完成這一過(guò)程時(shí)B泵未到上限位）。當(dāng)B泵運(yùn)行至離上限位時(shí)，開(kāi)始換泵，過(guò)程同A泵切換到B泵一樣。這樣就進(jìn)入循環(huán)換泵狀態(tài)，可達(dá)到恒壓連續(xù)出液的目的；

圖2.雙缸串聯(lián)恒壓模式
3）雙缸串聯(lián)恒流模式。以A泵先啟動(dòng)為例，A泵出口閥打開(kāi)并進(jìn)泵，B泵實(shí)時(shí)跟蹤A泵壓力。當(dāng)A泵運(yùn)行至離上限位還有10mm時(shí)開(kāi)始換泵，B泵出口閥打開(kāi)，A泵開(kāi)始減速，B泵同時(shí)加速。mainly formed by the cascade of power grid, the potential difference between the ground and the common state (same direction) voltage induced by space electromagnetic radiation on the signal line. The common mode voltage is sometimes large, especially in the electrical power supply room with poor isolation performance. The common mode voltage of the transmitter output signal is generally high, and some can be as high as more than 130v. Common mode voltage can be converted into differential mode voltage through asymmetric circuit, which directly affects the measurement and control signal and causes component damage (this is the reason for the high damage rate of I / O modules in some systems). This common mode interference can be DC or AC. Differential mode interference refers to the interference voltage between the two poles of the signal, which is mainly formed by the coupling induction of space electromagnetic field between signals and the conversion of common mode interference by unbalanced circuit. This interference is directly superimposed on the signal and directly affects the measurement and

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