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日本NACHI不二越閥塊M0B-01X-B2-10現(xiàn)貨可提供報關(guān)單
NACHI不二越電磁閥M0B-01X-B2-10現(xiàn)貨可提供報關(guān)單,2連以上使用電磁閥或模塊化閥時的滑塊,配管為雙面取出。
NACHI不二越電磁閥M0B-01X-B2-10訂貨說明:
1.模塊化閥用基座塊:代碼M0B
2.稱徑(尺寸):代碼01、03
3.A、B端口配管直徑:代碼X:比呼叫直徑提高1個尺寸,代碼Y:比標(biāo)稱直徑提高2尺寸
4.形式:代碼B2、B3、B4、B5、B6
5.設(shè)計編號:代碼10
類型板/基礎(chǔ)塊
標(biāo)稱直徑(尺寸)01
最高使用壓力(MPa)25
推薦流量(升/min)40
配管取出口尺寸(A、B)3/8
LA160
RoHS:10-
詳見下圖資料
日本NACHI不二越閥塊閥塊用于電液伺服控制系統(tǒng),在TRT裝置中,屬于八大系統(tǒng)之一的分系統(tǒng)。作用:電液伺服控制系統(tǒng),在TRT裝置中,屬于八大系統(tǒng)之一的分系統(tǒng)。根據(jù)主控室的指令,來實現(xiàn)TRT的開,停,轉(zhuǎn)速控制,功率控制,爐頂壓力以及過程檢測等系統(tǒng)控制,要實現(xiàn)以上系統(tǒng)的功能控制,最終將要反映在控制透平機(jī)的轉(zhuǎn)速上,就要控制透平靜葉的開度,而控制靜葉開度的手段就是電液位置伺服系統(tǒng)??刂葡到y(tǒng)的精度,誤差,直接影響TRT系統(tǒng)各階段過程的控制。由此可見,該系統(tǒng)在TRT中的地位,作用是十分重要的。
原理:經(jīng)過方案設(shè)計,確定由機(jī)、電、液共同構(gòu)成電液伺服控制系統(tǒng),由自控系統(tǒng)發(fā)出的指令信號,在伺服控制器中與油缸的實際位置信號相比較,成為誤差信號放大后,送入電液伺服閥,伺服閥按一定的比例將電信號轉(zhuǎn)變成液壓油流量推動油缸運(yùn)動,由位置傳感器發(fā)出的反饋信號不斷改變,直至與指令信號相等時,油缸停止運(yùn)動,即停在z定的位置上,是透平靜葉穩(wěn)定在此開度上。油缸的直線運(yùn)動,通過一套曲柄轉(zhuǎn)變成閥板的旋轉(zhuǎn)運(yùn)動,改變閥板或靜葉的工作角度。通過以上的分析說明,隨著系統(tǒng)信號的不斷變化,透平靜葉的開度也將不斷改變,并通過靜葉開度的變化,達(dá)到控制轉(zhuǎn)數(shù)、控制煤氣流量、控制透平出力的目的.
閥塊失效:
閥塊的失效主要表現(xiàn)有孔和桿之間配合間隙過大、動態(tài)密封磨損、控制臺肩磨損、閱的氣蝕等。歸納出形式有以下三點(diǎn):
(1)性能退化:約占失效的15%;
(2)性能下降:約占失效的70%,分為腐蝕和機(jī)械磨損,機(jī)械磨損又可細(xì)分為磨損、老化、粘合損壞;
(3)意外事故:約占失效的15%。
出現(xiàn)閥塊失效最主要的兩大原因是:
(1)油液的清潔度不夠;
(2)系統(tǒng)進(jìn)入空氣
日本NACHI不二越閥塊M0B-01X-B2-10現(xiàn)貨可提供報關(guān)單
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日本NACHI不二越閥塊M0B-01X-B2-10現(xiàn)貨可提供報關(guān)單