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1、減溫減壓裝置用途
減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置是(shi)用(yong)(yong)來(lai)調節蒸汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)力(li)、溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)的(de)(de)(de)重(zhong)要裝(zhuang)(zhuang)置，在(zai)(zai)火力(li)發(fa)電(dian)廠中鍋(guo)(guo)爐(lu)(lu)產(chan)(chan)生過(guo)熱(re)(re)(re)蒸汽(qi)(qi)(qi)(qi)，如(ru)(ru)果鍋(guo)(guo)爐(lu)(lu)不裝(zhuang)(zhuang)備(bei)(bei)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)器(qi)，就無法將(jiang)鍋(guo)(guo)爐(lu)(lu)出口蒸汽(qi)(qi)(qi)(qi)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)控(kong)制(zhi)在(zai)(zai)需(xu)要范圍內，會(hui)使(shi)(shi)鍋(guo)(guo)爐(lu)(lu)汽(qi)(qi)(qi)(qi)輪機等設(she)(she)備(bei)(bei)因(yin)超(chao)溫(wen)(wen)(wen)(wen)(wen)(wen)損壞或(huo)造成(cheng)重(zhong)大(da)事故。同(tong)(tong)時(shi)，在(zai)(zai)化工(gong)(gong)(gong)、輕(qing)工(gong)(gong)(gong)、醫藥(yao)、食(shi)(shi)品加(jia)工(gong)(gong)(gong)等一切使(shi)(shi)用(yong)(yong)蒸汽(qi)(qi)(qi)(qi)的(de)(de)(de)生產(chan)(chan)工(gong)(gong)(gong)藝(yi)流(liu)程中，過(guo)熱(re)(re)(re)蒸汽(qi)(qi)(qi)(qi)作為(wei)機械能量的(de)(de)(de)產(chan)(chan)生提供了能源。而許多(duo)情況下(xia)，飽(bao)和(he)(he)蒸汽(qi)(qi)(qi)(qi)是(shi)更適合使(shi)(shi)用(yong)(yong)的(de)(de)(de)，由(you)于工(gong)(gong)(gong)藝(yi)及設(she)(she)備(bei)(bei)的(de)(de)(de)原因(yin)，對(dui)壓(ya)(ya)(ya)(ya)力(li)、溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)的(de)(de)(de)控(kong)制(zhi)也是(shi)必不可少的(de)(de)(de)，通過(guo)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置可以得到(dao)合適的(de)(de)(de)動力(li)蒸汽(qi)(qi)(qi)(qi)。例如(ru)(ru)：當換(huan)熱(re)(re)(re)器(qi)用(yong)(yong)于制(zhi)程操作時(shi)，使(shi)(shi)用(yong)(yong)過(guo)熱(re)(re)(re)蒸汽(qi)(qi)(qi)(qi)由(you)于低(di)(di)的(de)(de)(de)傳熱(re)(re)(re)系(xi)數而降(jiang)低(di)(di)效率，使(shi)(shi)用(yong)(yong)飽(bao)和(he)(he)蒸汽(qi)(qi)(qi)(qi)更加(jia)適合。另外(wai)當高壓(ya)(ya)(ya)(ya)的(de)(de)(de)干(gan)飽(bao)和(he)(he)蒸汽(qi)(qi)(qi)(qi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)至低(di)(di)壓(ya)(ya)(ya)(ya)時(shi)，在(zai)(zai)下(xia)游出口會(hui)產(chan)(chan)生過(guo)熱(re)(re)(re)度(du)(du)。這樣(yang)都需(xu)要將(jiang)過(guo)熱(re)(re)(re)的(de)(de)(de)蒸汽(qi)(qi)(qi)(qi)降(jiang)溫(wen)(wen)(wen)(wen)(wen)(wen)至所(suo)需(xu)的(de)(de)(de)接近飽(bao)和(he)(he)的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)，這就需(xu)要減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)器(qi)。在(zai)(zai)很多(duo)情況下(xia)需(xu)要對(dui)高壓(ya)(ya)(ya)(ya)過(guo)熱(re)(re)(re)的(de)(de)(de)蒸汽(qi)(qi)(qi)(qi)同(tong)(tong)時(shi)進行(xing)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)和(he)(he)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)。減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置是(shi)節能環保產(chan)(chan)品。減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置配上(shang)相應的(de)(de)(de)工(gong)(gong)(gong)業(ye)(ye)(ye)自動化儀表（即熱(re)(re)(re)控(kong)柜），可對(dui)電(dian)站或(huo)工(gong)(gong)(gong)業(ye)(ye)(ye)鍋(guo)(guo)爐(lu)(lu)及熱(re)(re)(re)電(dian)廠等處輸送來(lai)的(de)(de)(de)一次(ci)（新）蒸汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)力(li)P1、溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)T1進行(xing)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)，使(shi)(shi)其二次(ci)蒸汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)力(li)P2、溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)T2達到(dao)生產(chan)(chan)工(gong)(gong)(gong)藝(yi)所(suo)需(xu)的(de)(de)(de)要求。廣泛用(yong)(yong)于熱(re)(re)(re)電(dian)廠、集(ji)中供熱(re)(re)(re)、食(shi)(shi)品工(gong)(gong)(gong)業(ye)(ye)(ye)、石化工(gong)(gong)(gong)業(ye)(ye)(ye)、紡織工(gong)(gong)(gong)業(ye)(ye)(ye)、橡膠工(gong)(gong)(gong)業(ye)(ye)(ye)、造紙和(he)(he)紙漿工(gong)(gong)(gong)業(ye)(ye)(ye)、煙(yan)草工(gong)(gong)(gong)業(ye)(ye)(ye)、制(zhi)藥(yao)等其它很多(duo)行(xing)業(ye)(ye)(ye)。為(wei)了滿足不同(tong)(tong)設(she)(she)備(bei)(bei)工(gong)(gong)(gong)藝(yi)要求，我公司提供不同(tong)(tong)類型(xing)的(de)(de)(de)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)（減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)、減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)）器(qi)，并實現(xian)全套(tao)智能化自動控(kong)制(zhi)或(huo)DCS系(xi)統聯網。
減(jian)(jian)溫(wen)減(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)根據(ju)(ju)一(yi)次（新）蒸汽壓(ya)(ya)(ya)(ya)力(li)P1、溫(wen)度T1、可(ke)(ke)分為高(gao)溫(wen)高(gao)壓(ya)(ya)(ya)(ya)減(jian)(jian)溫(wen)減(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)、次高(gao)壓(ya)(ya)(ya)(ya)減(jian)(jian)溫(wen)減(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)、中(zhong)溫(wen)中(zhong)壓(ya)(ya)(ya)(ya)減(jian)(jian)溫(wen)減(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)；減(jian)(jian)溫(wen)減(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)根據(ju)(ju)使用情況又可(ke)(ke)分為減(jian)(jian)溫(wen)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)、減(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)、減(jian)(jian)溫(wen)減(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)，
減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)一般根據(ju)一次(ci)蒸(zheng)(zheng)汽(qi)（新蒸(zheng)(zheng)汽(qi)）和二次(ci)蒸(zheng)(zheng)汽(qi)（即減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)后的(de)蒸(zheng)(zheng)汽(qi)）的(de)參數及用量進行(xing)選擇，經(jing)常運(yun)行(xing)的(de)減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)一般設置(zhi)(zhi)(zhi)兩套，其中一套作(zuo)為備(bei)用；不(bu)(bu)經(jing)常運(yun)行(xing)的(de)減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)一般不(bu)(bu)考慮備(bei)用；備(bei)用的(de)減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)應(ying)處于熱備(bei)用狀態。設計計算時根據(ju)二次(ci)蒸(zheng)(zheng)汽(qi)的(de)量確定進入減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)的(de)一次(ci)蒸(zheng)(zheng)汽(qi)和減(jian)(jian)(jian)(jian)溫(wen)(wen)水量，減(jian)(jian)(jian)(jian)溫(wen)(wen)水壓(ya)(ya)力、溫(wen)(wen)度應(ying)滿足(zu)噴(pen)水及霧化的(de)要求，水質不(bu)(bu)低于蒸(zheng)(zheng)汽(qi)品質。
2、減溫減壓裝置型號(hao)編制
裝(zhuang)置的型號表示方法如(ru)下：
注1:對于減溫裝置和減壓(ya)裝置，其代(dai)號(hao)則分別為W或(huo)Y表示(shi)。
注2:型(xing)號有(you)關的(de)壓力值(zhi)，均保留一位小數(shu)。
例：WY80-3.82/450-0.98/260-8.0/104表示出口蒸(zheng)氣流量為80t/h；進口蒸(zheng)氣壓力3.82MPa，溫(wen)度(du)450℃；出口蒸(zheng)汽壓力為0.98MPa，溫(wen)度(du)260℃；溫(wen)度(du)給(gei)水壓力為8.0MPa，給(gei)水溫(wen)度(du)為104℃的減溫(wen)減壓裝置。
3、減溫減壓裝(zhuang)置執行(xing)標(biao)準(zhun)
減(jian)溫減(jian)壓裝置標(biao)準：JB/T6323-2002《減(jian)溫減(jian)壓裝置》
減(jian)溫減(jian)壓閥標(biao)準：GB/10868-2005《電站減(jian)溫減(jian)壓閥》
給水調節閥標準：GB/10869-2005《電站調節閥》
4、減溫減壓裝置分類方法
A、按結構分類
1)、一體(ti)式減溫減壓(ya)裝(zhuang)置；（WY型(xing)）
2)、分體式減溫(wen)減壓裝置；（Y-W型）
3)、減溫裝置（W型）；
4)、減壓裝置(zhi)（Y型）；
B、按(an)蒸汽參數分(fen)類：
1)、中溫(wen)中壓減溫(wen)減壓裝置；（P1≤3.82MPa，溫(wen)度T1≤425℃）；
2)、次高壓減(jian)溫減(jian)壓裝(zhuang)置；（P1≤5.4MPa，溫度T1≤485℃）；
3)、高(gao)溫(wen)(wen)高(gao)壓減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓裝(zhuang)置；（P1≤10MPa，溫(wen)(wen)度T1≤540℃）；
5、減溫減壓裝置(zhi)主要性能指標
1)、進(jin)口(kou)蒸汽壓力P1和(he)溫度T1
中(zhong)溫(wen)中(zhong)壓：P1≤3.82MPa，溫(wen)度T1≤425℃。
次高溫高壓：P1≤5.4MPa，溫度T1≤485℃。
高溫高壓：P1≤10MPa，溫度T1≤540℃。
2)、出口蒸(zheng)汽(qi)流量(liang)Q
減溫減壓裝(zhuang)置出口流(liu)量(liang)Q的(de)變化范圍為10%Q~120%Q，在此范圍內調節比較理想(xiang)。
若有(you)特殊要求，可與本(ben)公司協(xie)商另(ling)定。
3)、出(chu)口蒸汽壓力P2
出口蒸汽壓力P2的調節(jie)精度不低于(yu)2.5級。誤差不大(da)于(yu)±0.04MPa；
4)、出(chu)口蒸(zheng)汽溫度(du)T2
出口蒸汽(qi)溫度(du)T2的調節精度(du)不低于2.5級。±2.5℃；
5)、噪音
裝置(zhi)正常(chang)運(yun)行時，在減溫(wen)減壓閥(fa)下游(you)一米，同(tong)時距管壁一米處測其(qi)噪音(yin)，噪音(yin)音(yin)級(ji)應
不大于85分貝(bei)。
6、減(jian)溫減(jian)壓裝置(zhi)訂貨須知
訂合同時請提供(gong)：
1)、出口(kou)(kou)蒸(zheng)(zheng)汽流量Q、進口(kou)(kou)蒸(zheng)(zheng)汽壓力P1、溫度T1、出口(kou)(kou)蒸(zheng)(zheng)汽壓力P2、溫度T2；
2)、減溫給水壓力Pb、溫度tb；
3)、注明控制方式；（儀(yi)表(biao)盤控制，PLC、DCS控制，DCS監視）
4)、控制類別：電動(dong)、氣動(dong)、液動(dong)；
選(xuan)擇氣(qi)動閥(fa)時還必須提供：
1)、作用形式：氣(qi)開式或(huo)氣(qi)閉式；正作用或(huo)反作用；
2)、氣源壓力；
3)、其它附(fu)件說明：用(yong)戶如(ru)有特殊(shu)要求，應在商定(ding)后注明或(huo)另(ling)行簽訂技術協議。
注：1出口(kou)蒸汽壓力P2應不(bu)低于(yu)飽(bao)和(he)溫(wen)(wen)度所(suo)對應的壓力值(zhi)，或出口(kou)蒸汽溫(wen)(wen)度T2應不(bu)低于(yu)P2所(suo)對應的飽(bao)和(he)溫(wen)(wen)度值(zhi)；
2對減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)(ya)一體(ti)式結構：減(jian)(jian)溫(wen)(wen)給水的壓(ya)(ya)力Pb≥0.6P1＋0.8MPa；若Pb值太低，將無法噴(pen)入減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)(ya)閥內減(jian)(jian)溫(wen)(wen)。
（3）對減(jian)溫(wen)減(jian)壓分體式結構：減(jian)溫(wen)給(gei)水的壓力Pb≥P2＋0.6MPa；
附(fu)表：基本訂貨要求
注：不加(jia)注壓(ya)力(li)值(zhi)為表壓(ya)
減溫減壓裝置(zhi)的供貨(huo)范(fan)圍為括號標志以內，主要有
1.減(jian)壓(ya)系(xi)統：減(jian)溫減(jian)壓(ya)閥或(huo)減(jian)壓(ya)閥、節流(liu)孔板等；
2.減(jian)溫系(xi)統：給水(shui)調(diao)節(jie)閥(fa)或可調(diao)噴嘴、截止閥(fa)、節(jie)流閥(fa)等；
3.安(an)全系(xi)統：安(an)全閥、止回(hui)閥等(deng)；
4.管(guan)路(lu)系(xi)統：蒸汽管(guan)道(dao)、混合管(guan)道(dao)、過(guo)渡管(guan)、減溫水(shui)管(guan)等；
5.配套附件：截止閥、雙金屬溫度(du)計及(ji)接管、壓力表及(ji)三通閥、彎道、接頭、法蘭、襯墊、
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