三通(tong)(tong)控(kong)制閥是什(shen)么 電動三通(tong)(tong)控(kong)制閥的優點
三通控制閥工作原理
反(fan)(fan)(fan)應(ying)(ying)(ying)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)泵把加(jia)熱(re)(re)(re)(re)后(hou)(hou)的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)經三通(tong)(tong)閥(fa)(fa)(TV-418021A),一(yi)部(bu)分送(song)到(dao)廢熱(re)(re)(re)(re)鍋爐(E-801);另一(yi)部(bu)分進(jin)入流(liu)化床反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi)(R-201)。兩部(bu)分的(de)(de)(de)流(liu)量(liang)是(shi)由三通(tong)(tong)控制(zhi)(zhi)(zhi)閥(fa)(fa)的(de)(de)(de)閥(fa)(fa)芯同步反(fan)(fan)(fan)向調(diao)節(jie)三通(tong)(tong)閥(fa)(fa)的(de)(de)(de)A、B出口(kou)的(de)(de)(de)開(kai)度(du)(du)(du)來分配,這種流(liu)量(liang)調(diao)節(jie)方式無節(jie)流(liu),流(liu)阻(zu)小,作用(yong)(yong)在(zai)閥(fa)(fa)上的(de)(de)(de)壓力(li)相(xiang)對較小,不會對泵產(chan)生(sheng)(sheng)背(bei)壓,使導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)泵的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)流(liu)量(liang)保(bao)持恒定(ding)。若流(liu)化床反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi)的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)發生(sheng)(sheng)變(bian)(bian)化,溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)信號經控制(zhi)(zhi)(zhi)系統進(jin)行運算(suan),控制(zhi)(zhi)(zhi)三通(tong)(tong)閥(fa)(fa)的(de)(de)(de)執行機構帶動(dong)該閥(fa)(fa)的(de)(de)(de)閥(fa)(fa)芯動(dong)作,從而(er)改(gai)變(bian)(bian)了(le)三通(tong)(tong)閥(fa)(fa)的(de)(de)(de)A、B口(kou)的(de)(de)(de)開(kai)度(du)(du)(du),達到(dao)調(diao)節(jie)流(liu)量(liang)的(de)(de)(de)目的(de)(de)(de)。假設(she)R-201溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)偏(pian)高(gao),TIC-418023調(diao)節(jie)器(qi)將(jiang)起作用(yong)(yong):一(yi)是(shi)加(jia)大(da)(da)進(jin)入到(dao)R-201中(zhong)的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)流(liu)量(liang),以移走(zou)(zou)R-201中(zhong)更(geng)多的(de)(de)(de)熱(re)(re)(re)(re)量(liang),使溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)降下(xia)來。同時(shi),TIC-418023還要改(gai)變(bian)(bian)調(diao)節(jie)器(qi)TIC-2418021的(de)(de)(de)設(she)定(ding)值(zhi),使其輸(shu)出變(bian)(bian)化,從而(er)改(gai)變(bian)(bian)三通(tong)(tong)閥(fa)(fa)TV-418021A/B閥(fa)(fa)門的(de)(de)(de)開(kai)度(du)(du)(du)———首先(xian)加(jia)大(da)(da)進(jin)入E-801的(de)(de)(de)流(liu)量(liang),利用(yong)(yong)E-801降低(di)(di)進(jin)入的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du),從而(er)降低(di)(di)R-201的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du),在(zai)E-801中(zhong),利用(yong)(yong)被加(jia)熱(re)(re)(re)(re)的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)的(de)(de)(de)熱(re)(re)(re)(re)量(liang),生(sheng)(sheng)產(chan)1.0MPa(G)的(de)(de)(de)飽(bao)和蒸汽,換熱(re)(re)(re)(re)后(hou)(hou)的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)直接進(jin)入反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi);如果出E-801的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)偏(pian)高(gao),即(ji)此(ci)時(shi)R-201的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)還繼續(xu)偏(pian)高(gao),則(ze)利用(yong)(yong)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)冷(leng)卻(que)器(qi)(E2802)處(chu)的(de)(de)(de)三通(tong)(tong)閥(fa)(fa)(TV-418021B),將(jiang)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)轉(zhuan)向旁路去(qu)(qu)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)冷(leng)卻(que)器(qi),E-802用(yong)(yong)循(xun)環冷(leng)卻(que)水冷(leng)卻(que),即(ji)改(gai)變(bian)(bian)三通(tong)(tong)閥(fa)(fa)TV-418021B的(de)(de)(de)B出口(kou),進(jin)入E-802的(de)(de)(de)油(you)(you)(you)(you)(you)量(liang)加(jia)大(da)(da),E-802冷(leng)卻(que)后(hou)(hou)的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)與經TV-418021A的(de)(de)(de)主流(liu)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)在(zai)靜態混(hun)合(he)器(qi)中(zhong)充分混(hun)合(he)后(hou)(hou)去(qu)(qu)流(liu)化床反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi),便更(geng)多地(di)降低(di)(di)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du),最(zui)終能用(yong)(yong)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)移走(zou)(zou)R-201中(zhong)更(geng)多熱(re)(re)(re)(re)量(liang),使R-201的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)回到(dao)設(she)定(ding)值(zhi)上。由三通(tong)(tong)控制(zhi)(zhi)(zhi)閥(fa)(fa)(FV-418021)定(ding)量(liang)控制(zhi)(zhi)(zhi)的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)進(jin)流(liu)化床反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi)半管(guan)夾(jia)套管(guan),余下(xia)的(de)(de)(de)導(dao)熱(re)(re)(re)(re)油(you)(you)(you)(you)(you)去(qu)(qu)流(liu)化床反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi)內部(bu)指型循(xun)環管(guan)束。
在有機硅單體的生產過程中,反應部分是非常關鍵的,反應器控制得好與壞將直接影響到最終產品———甲基單體的產量和質量。由于甲基單體合成的反應為放熱反應,合成反應的操作溫度需控制在300℃左右,因此及時把多余的熱量移走,才能保證反應的順利進行。鑒于該反應控制的重要性和關鍵性,對反應器的控制采用了反應靈敏、調節速度快且控制性能穩定,同時又不是非常復雜的串級調節系統。以反應器溫度(TT-418023)作為主調參數,反應器入口的導熱油溫度(TT-418021)作為副調參數,2臺三通控制閥(TV-418021A/B)作為副環的被調(diao)(diao)(diao)(diao)對象,當導熱(re)(re)油(you)流(liu)(liu)量、溫(wen)(wen)(wen)度(du)(du)發生(sheng)(sheng)變(bian)化(hua)(hua),TT-418021引起波(bo)動,副調(diao)(diao)(diao)(diao)節器(qi)(qi)TIC-418021)立即進行調(diao)(diao)(diao)(diao)節,通過(guo)(guo)(guo)TV-418021A/B的開(kai)度(du)(du)變(bian)化(hua)(hua),改變(bian)至廢熱(re)(re)鍋爐及(ji)(ji)導熱(re)(re)油(you)冷卻器(qi)(qi)的導熱(re)(re)油(you)量來達(da)到不影響到反(fan)應器(qi)(qi)溫(wen)(wen)(wen)度(du)(du)的目(mu)的。如果(guo)導熱(re)(re)油(you)流(liu)(liu)量、溫(wen)(wen)(wen)度(du)(du)變(bian)化(hua)(hua)很大,影響到反(fan)應器(qi)(qi)入口溫(wen)(wen)(wen)度(du)(du)(TT-418021)及(ji)(ji)反(fan)應器(qi)(qi)溫(wen)(wen)(wen)度(du)(du)(TT-2418023)的變(bian)化(hua)(hua),這時(shi)主調(diao)(diao)(diao)(diao)節(TIC-418023)的輸(shu)出開(kai)始(shi)發生(sheng)(sheng)變(bian)化(hua)(hua),對副調(diao)(diao)(diao)(diao)節器(qi)(qi)(TIC-418021)來說(shuo),它將(jiang)接(jie)受給定值與(yu)測量值兩方面的變(bian)化(hua)(hua),從而(er)加速了(le)調(diao)(diao)(diao)(diao)節過(guo)(guo)(guo)程,但此調(diao)(diao)(diao)(diao)節過(guo)(guo)(guo)程依(yi)然(ran)通過(guo)(guo)(guo)改變(bian)TV-418021A/B的開(kai)度(du)(du)實現。除了(le)上述通過(guo)(guo)(guo)串級控制回路來控制流(liu)(liu)化(hua)(hua)床反(fan)應器(qi)(qi)的溫(wen)(wen)(wen)度(du)(du)外,還由反(fan)應導熱(re)(re)油(you)泵(beng)的回流(liu)(liu)流(liu)(liu)量來調(diao)(diao)(diao)(diao)節,加快了(le)調(diao)(diao)(diao)(diao)節進程。
電動三通控制閥的優點
提高風電的使用價值
“非并網(wang)(wang)風(feng)電(dian)(dian)(dian)(dian)”與大(da)(da)規模(mo)蓄電(dian)(dian)(dian)(dian)兩(liang)者(zhe)結合(he)后,售給(gei)電(dian)(dian)(dian)(dian)網(wang)(wang)的(de)電(dian)(dian)(dian)(dian)能只(zhi)是過(guo)剩(sheng)的(de)部(bu)分,其規模(mo)遠小于風(feng)電(dian)(dian)(dian)(dian)直接并網(wang)(wang),所需的(de)輔助(zhu)設(she)備大(da)(da)幅度降(jiang)低(di),從而可降(jiang)低(di)風(feng)電(dian)(dian)(dian)(dian)成(cheng)本;而在“峰(feng)”期售給(gei)電(dian)(dian)(dian)(dian)網(wang)(wang)的(de)電(dian)(dian)(dian)(dian)能一定會受電(dian)(dian)(dian)(dian)網(wang)(wang)的(de)歡迎,上網(wang)(wang)電(dian)(dian)(dian)(dian)價(jia)(jia)將不再是國(guo)家政策(ce)照顧(gu)的(de)“平(ping)均(jun)價(jia)(jia)”,而可提高至接近“峰(feng)”期的(de)市價(jia)(jia),至少(shao)較易達成(cheng)協議。
充分發揮風電分布式供電的優勢,擴展風電的作用
我國廣闊的西部地區及大量海島難通大電網,獨家使用的微小型風機數量不斷增加。隨著生活水平的提高和風機價格的下降,有可能逐步發展以大中型風力發電機為核心的小型局域電網,為分散的村鎮提供生活和生產用的電能。與電網不聯結的這一類分布式風電站必須有相應規模的蓄電裝置與之配套運行,才能發揮好風電的作用,保證供電的連續性和穩定性。 所以,與大規模蓄電相結合,是單純(chun)“非并網風(feng)電(dian)(dian)(dian)”的(de)發(fa)展(zhan)和(he)(he)拓寬,既(ji)適(shi)用于(yu)大(da)(da)型(xing)風(feng)電(dian)(dian)(dian)場,也適(shi)合中小型(xing)風(feng)電(dian)(dian)(dian)場,可(ke)提(ti)高分布式(shi)供電(dian)(dian)(dian)的(de)質(zhi)量和(he)(he)經濟性,探索出有中國特色的(de)、有自主知識(shi)產權的(de)風(feng)能利用的(de)新途徑。 包括風(feng)電(dian)(dian)(dian)在內的(de)各種(zhong)間歇式(shi)可(ke)再生能源應與大(da)(da)規模蓄電(dian)(dian)(dian)技術同(tong)步發(fa)展(zhan),建議政府有關(guan)(guan)部門(men)加強對大(da)(da)規模蓄電(dian)(dian)(dian)技術(特別是液(ye)流蓄電(dian)(dian)(dian))發(fa)展(zhan)的(de)指導和(he)(he)投(tou)入,風(feng)電(dian)(dian)(dian)界和(he)(he)電(dian)(dian)(dian)網公司也要(yao)一起來關(guan)(guan)注和(he)(he)參與。