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上海相裕機(jī)電設(shè)備有限公司
主營產(chǎn)品： SAMSON閥門,HYDAC傳感器,賀德克傳感器,HYDAC壓力傳感器,賀德克壓力傳感器 |
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聯(lián)系電話
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上海相裕機(jī)電設(shè)備有限公司
主營產(chǎn)品： SAMSON閥門,HYDAC傳感器,賀德克傳感器,HYDAC壓力傳感器,賀德克壓力傳感器 |
聯(lián)系電話
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更新時(shí)間：2017-03-03 08:34:15瀏覽次數(shù)：686
聯(lián)系我們時(shí)請(qǐng)說明是化工儀器網(wǎng)上看到的信息，謝謝!
德國西門子SIEMENS閥位傳送器/C73541-A430 -D78
閥位傳送器與各類調(diào)節(jié)閥配套使用，顧名思義閥位傳送器就是用以將調(diào)節(jié)閥的位移變化，轉(zhuǎn)換成相對(duì)應(yīng)的氣動(dòng)模擬信號(hào)或電流信號(hào)，從而使操作人員在控制室就能了解現(xiàn)場情況。實(shí)際上，閥位傳送器是調(diào)節(jié)閥形程輸出的反饋裝置，可以廣泛應(yīng)用于遠(yuǎn)距離操作及重要的自控回路中，監(jiān)測調(diào)節(jié)閥的形程狀況。
德國西門子SIEMENS閥位傳送器/C73541-A430 -D78
其中，氣動(dòng)閥位傳送器動(dòng)作原理：當(dāng)執(zhí)行機(jī)構(gòu)接受氣動(dòng)信號(hào)時(shí)，執(zhí)行機(jī)構(gòu)動(dòng)作。檔桿與執(zhí)行機(jī)構(gòu)的推桿相連接，并帶動(dòng)傳送器的轉(zhuǎn)軸使凸輪轉(zhuǎn)動(dòng)，副杠桿向下轉(zhuǎn)動(dòng)，拉伸彈簧的拉力減小，此時(shí)主杠桿繞支點(diǎn)轉(zhuǎn)動(dòng)，使擋板靠近噴嘴，放大器的背壓增加，推動(dòng)滑閥左移，氣源壓力經(jīng)放大器滑閥進(jìn)入氣路。一路輸入到閥位顯示儀表，另一路輸入到反饋波紋管，對(duì)主杠桿產(chǎn)生推力。當(dāng)這個(gè)力對(duì)支點(diǎn)的作用力矩，與彈簧的拉伸力對(duì)支點(diǎn)的作用力矩相等時(shí)，達(dá)到平衡狀態(tài)，閥位傳送器已將閥門行程轉(zhuǎn)換為對(duì)應(yīng)的輸出壓力
德國西門子SIEMENS閥位傳送器/C73541-A430 -D78
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