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1、減(jian)(jian)溫減(jian)(jian)壓裝(zhuang)置用途
減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝置(zhi)是用(yong)(yong)(yong)來調(diao)節蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)、溫(wen)(wen)(wen)(wen)度(du)的(de)(de)(de)(de)重要(yao)裝置(zhi)，在(zai)火力(li)發電廠(chang)中(zhong)鍋(guo)(guo)爐(lu)(lu)產(chan)(chan)生過熱(re)(re)(re)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)，如果鍋(guo)(guo)爐(lu)(lu)不(bu)裝備(bei)(bei)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)器(qi)，就無(wu)法將鍋(guo)(guo)爐(lu)(lu)出(chu)口蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)溫(wen)(wen)(wen)(wen)度(du)控(kong)制(zhi)在(zai)需(xu)要(yao)范(fan)圍內，會(hui)使(shi)鍋(guo)(guo)爐(lu)(lu)汽(qi)(qi)(qi)(qi)輪機等設備(bei)(bei)因超溫(wen)(wen)(wen)(wen)損壞或(huo)(huo)造成重大事故。同時(shi)，在(zai)化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)、輕工(gong)(gong)(gong)(gong)(gong)(gong)、醫藥、食(shi)品(pin)(pin)加(jia)工(gong)(gong)(gong)(gong)(gong)(gong)等一(yi)切使(shi)用(yong)(yong)(yong)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)的(de)(de)(de)(de)生產(chan)(chan)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)流程(cheng)中(zhong)，過熱(re)(re)(re)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)作為機械能(neng)(neng)量(liang)的(de)(de)(de)(de)產(chan)(chan)生提(ti)供(gong)了(le)能(neng)(neng)源(yuan)。而(er)許多情(qing)況下(xia)(xia)(xia)，飽(bao)和(he)(he)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)是更(geng)適(shi)(shi)(shi)合使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)，由于(yu)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)及(ji)設備(bei)(bei)的(de)(de)(de)(de)原因，對壓(ya)(ya)(ya)力(li)、溫(wen)(wen)(wen)(wen)度(du)的(de)(de)(de)(de)控(kong)制(zhi)也(ye)是必不(bu)可少的(de)(de)(de)(de)，通過減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝置(zhi)可以得(de)到(dao)合適(shi)(shi)(shi)的(de)(de)(de)(de)動(dong)力(li)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)。例如：當(dang)換熱(re)(re)(re)器(qi)用(yong)(yong)(yong)于(yu)制(zhi)程(cheng)操作時(shi)，使(shi)用(yong)(yong)(yong)過熱(re)(re)(re)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)由于(yu)低(di)的(de)(de)(de)(de)傳(chuan)熱(re)(re)(re)系數而(er)降低(di)效率，使(shi)用(yong)(yong)(yong)飽(bao)和(he)(he)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)更(geng)加(jia)適(shi)(shi)(shi)合。另(ling)外(wai)當(dang)高(gao)壓(ya)(ya)(ya)的(de)(de)(de)(de)干飽(bao)和(he)(he)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)減(jian)(jian)(jian)壓(ya)(ya)(ya)至低(di)壓(ya)(ya)(ya)時(shi)，在(zai)下(xia)(xia)(xia)游出(chu)口會(hui)產(chan)(chan)生過熱(re)(re)(re)度(du)。這樣都(dou)需(xu)要(yao)將過熱(re)(re)(re)的(de)(de)(de)(de)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)降溫(wen)(wen)(wen)(wen)至所需(xu)的(de)(de)(de)(de)接近飽(bao)和(he)(he)的(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)，這就需(xu)要(yao)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)器(qi)。在(zai)很多情(qing)況下(xia)(xia)(xia)需(xu)要(yao)對高(gao)壓(ya)(ya)(ya)過熱(re)(re)(re)的(de)(de)(de)(de)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)同時(shi)進行(xing)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)和(he)(he)減(jian)(jian)(jian)壓(ya)(ya)(ya)。減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝置(zhi)是節能(neng)(neng)環保產(chan)(chan)品(pin)(pin)。減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝置(zhi)配上相應的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)自動(dong)化(hua)儀表（即熱(re)(re)(re)控(kong)柜），可對電站或(huo)(huo)工(gong)(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)鍋(guo)(guo)爐(lu)(lu)及(ji)熱(re)(re)(re)電廠(chang)等處輸送來的(de)(de)(de)(de)一(yi)次(ci)（新）蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)P1、溫(wen)(wen)(wen)(wen)度(du)T1進行(xing)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)，使(shi)其二次(ci)蒸(zheng)(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)P2、溫(wen)(wen)(wen)(wen)度(du)T2達到(dao)生產(chan)(chan)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)所需(xu)的(de)(de)(de)(de)要(yao)求。廣泛用(yong)(yong)(yong)于(yu)熱(re)(re)(re)電廠(chang)、集中(zhong)供(gong)熱(re)(re)(re)、食(shi)品(pin)(pin)工(gong)(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)、石化(hua)工(gong)(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)、紡織工(gong)(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)、橡膠工(gong)(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)、造紙(zhi)和(he)(he)紙(zhi)漿工(gong)(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)、煙(yan)草工(gong)(gong)(gong)(gong)(gong)(gong)業(ye)(ye)(ye)(ye)(ye)、制(zhi)藥等其它(ta)很多行(xing)業(ye)(ye)(ye)(ye)(ye)。為了(le)滿足不(bu)同設備(bei)(bei)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)要(yao)求，我公司提(ti)供(gong)不(bu)同類型的(de)(de)(de)(de)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)（減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)、減(jian)(jian)(jian)壓(ya)(ya)(ya)）器(qi)，并(bing)實現全(quan)套智能(neng)(neng)化(hua)自動(dong)控(kong)制(zhi)或(huo)(huo)DCS系統聯網(wang)。
減(jian)溫(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)(zhuang)置根(gen)據一次(ci)（新）蒸汽壓(ya)(ya)力P1、溫(wen)(wen)(wen)度(du)T1、可分(fen)為高(gao)溫(wen)(wen)(wen)高(gao)壓(ya)(ya)減(jian)溫(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)(zhuang)置、次(ci)高(gao)壓(ya)(ya)減(jian)溫(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)(zhuang)置、中(zhong)溫(wen)(wen)(wen)中(zhong)壓(ya)(ya)減(jian)溫(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)(zhuang)置；減(jian)溫(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)(zhuang)置根(gen)據使(shi)用情況又可分(fen)為減(jian)溫(wen)(wen)(wen)裝(zhuang)(zhuang)置、減(jian)壓(ya)(ya)裝(zhuang)(zhuang)置、減(jian)溫(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)(zhuang)置，
減(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置(zhi)一(yi)般根據一(yi)次(ci)蒸汽(qi)(qi)(qi)（新(xin)蒸汽(qi)(qi)(qi)）和二次(ci)蒸汽(qi)(qi)(qi)（即減(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)后的蒸汽(qi)(qi)(qi)）的參數及用量(liang)進(jin)行選擇，經(jing)常運(yun)行的減(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置(zhi)一(yi)般設置(zhi)兩套(tao)(tao)，其中(zhong)一(yi)套(tao)(tao)作為備用；不經(jing)常運(yun)行的減(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置(zhi)一(yi)般不考慮備用；備用的減(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置(zhi)應處于熱(re)備用狀態。設計計算(suan)時根據二次(ci)蒸汽(qi)(qi)(qi)的量(liang)確定進(jin)入減(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置(zhi)的一(yi)次(ci)蒸汽(qi)(qi)(qi)和減(jian)(jian)(jian)(jian)溫(wen)水量(liang)，減(jian)(jian)(jian)(jian)溫(wen)水壓(ya)(ya)力、溫(wen)度應滿足噴水及霧化的要求，水質不低于蒸汽(qi)(qi)(qi)品(pin)質。
2、減溫減壓裝置型(xing)號(hao)編制
裝置的型號表示方法如下：
注1:對于(yu)減(jian)溫裝置和(he)減(jian)壓裝置，其代號則分別(bie)為W或Y表示(shi)。
注2:型號有關的壓力值，均保留一(yi)位小數。
例(li)：WY80-3.82/450-0.98/260-8.0/104表(biao)示(shi)出(chu)口蒸(zheng)氣流(liu)量為(wei)80t/h；進口蒸(zheng)氣壓力(li)3.82MPa，溫(wen)度(du)450℃；出(chu)口蒸(zheng)汽(qi)壓力(li)為(wei)0.98MPa，溫(wen)度(du)260℃；溫(wen)度(du)給水(shui)壓力(li)為(wei)8.0MPa，給水(shui)溫(wen)度(du)為(wei)104℃的減(jian)溫(wen)減(jian)壓裝置(zhi)。
3、減(jian)(jian)溫(wen)減(jian)(jian)壓裝(zhuang)置執行標(biao)準
減(jian)溫減(jian)壓裝置標準：JB/T6323-2002《減(jian)溫減(jian)壓裝置》
減(jian)(jian)溫減(jian)(jian)壓(ya)(ya)閥(fa)標(biao)準：GB/10868-2005《電站減(jian)(jian)溫減(jian)(jian)壓(ya)(ya)閥(fa)》
給水調節閥標準：GB/10869-2005《電站調節閥》
4、減(jian)溫減(jian)壓裝置分類方法
A、按結構分類
1)、一體式減(jian)溫減(jian)壓裝置；（WY型）
2)、分體式(shi)減(jian)溫減(jian)壓裝置；（Y-W型）
3)、減溫(wen)裝置（W型）；
4)、減壓裝置（Y型）；
B、按蒸汽參(can)數分類：
1)、中(zhong)溫中(zhong)壓減溫減壓裝置；（P1≤3.82MPa，溫度T1≤425℃）；
2)、次高(gao)壓減(jian)溫減(jian)壓裝置(zhi)；（P1≤5.4MPa，溫度T1≤485℃）；
3)、高溫高壓(ya)減溫減壓(ya)裝置；（P1≤10MPa，溫度(du)T1≤540℃）；
5、減溫減壓裝置主要性能(neng)指標
1)、進口(kou)蒸(zheng)汽壓力P1和溫度T1
中溫中壓：P1≤3.82MPa，溫度T1≤425℃。
次高溫高壓：P1≤5.4MPa，溫度T1≤485℃。
高溫(wen)高壓：P1≤10MPa，溫(wen)度T1≤540℃。
2)、出口蒸汽流量(liang)Q
減溫減壓裝置出口流(liu)量(liang)Q的(de)變(bian)化范(fan)圍為10%Q~120%Q，在此范(fan)圍內調節比較理(li)想。
若有特殊(shu)要求，可與本公司協(xie)商另定。
3)、出口蒸(zheng)汽壓(ya)力P2
出口蒸汽壓力P2的調(diao)節精度不低于(yu)2.5級(ji)。誤差不大于(yu)±0.04MPa；
4)、出(chu)口蒸汽溫(wen)度T2
出口蒸汽溫度T2的調(diao)節精(jing)度不低(di)于2.5級。±2.5℃；
5)、噪音
裝置正常運行(xing)時，在減(jian)溫減(jian)壓閥下游一米，同時距管壁(bi)一米處(chu)測其(qi)噪音(yin)(yin)，噪音(yin)(yin)音(yin)(yin)級應
不大(da)于85分(fen)貝。
6、減(jian)溫減(jian)壓裝(zhuang)置訂貨須知
訂合(he)同時請提供：
1)、出口(kou)蒸汽(qi)流量Q、進(jin)口(kou)蒸汽(qi)壓力P1、溫(wen)度T1、出口(kou)蒸汽(qi)壓力P2、溫(wen)度T2；
2)、減(jian)溫給水(shui)壓力(li)Pb、溫度tb；
3)、注明控制(zhi)方式；（儀表盤控制(zhi)，PLC、DCS控制(zhi)，DCS監視(shi)）
4)、控制類別(bie)：電動、氣動、液動；
選擇(ze)氣動閥時還必須提供：
1)、作(zuo)用(yong)形式(shi)：氣(qi)開式(shi)或(huo)氣(qi)閉式(shi)；正作(zuo)用(yong)或(huo)反作(zuo)用(yong)；
2)、氣源壓力(li)；
3)、其它附件(jian)說明：用戶如(ru)有特殊(shu)要求，應在商定后注明或另行(xing)簽訂(ding)技術協議。
注(zhu)：1出口蒸汽壓(ya)力P2應(ying)不(bu)低于飽和(he)溫(wen)度所對應(ying)的壓(ya)力值，或出口蒸汽溫(wen)度T2應(ying)不(bu)低于P2所對應(ying)的飽和(he)溫(wen)度值；
2對減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓一(yi)體式結構(gou)：減(jian)(jian)溫(wen)(wen)給水的壓力Pb≥0.6P1＋0.8MPa；若Pb值太低，將無法噴入減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓閥內減(jian)(jian)溫(wen)(wen)。
（3）對減(jian)溫減(jian)壓分體式結構：減(jian)溫給水的壓力(li)Pb≥P2＋0.6MPa；
附表(biao)：基(ji)本訂貨要求
注：不加注壓力值為表壓
減溫減壓裝置的(de)供貨范圍為括號標志以內(nei)，主要有(you)
1.減壓(ya)系(xi)統：減溫減壓(ya)閥(fa)或減壓(ya)閥(fa)、節流孔(kong)板等；
2.減(jian)溫系統：給水(shui)調節(jie)閥(fa)或(huo)可(ke)調噴(pen)嘴、截止閥(fa)、節(jie)流閥(fa)等；
3.安全系統：安全閥、止回閥等；
4.管(guan)(guan)路(lu)系統：蒸汽管(guan)(guan)道、混合管(guan)(guan)道、過渡管(guan)(guan)、減溫水管(guan)(guan)等；
5.配套附件：截止閥、雙金屬(shu)溫度計(ji)及接管、壓力(li)表(biao)及三(san)通閥、彎道、接頭、法蘭、襯墊、
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