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1、減(jian)溫減(jian)壓裝置用途(tu)
減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)是(shi)(shi)用來調(diao)節蒸(zheng)(zheng)汽(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)、溫(wen)(wen)度(du)的(de)重(zhong)要(yao)裝置(zhi)(zhi)，在火(huo)力(li)發電廠(chang)中(zhong)鍋(guo)爐產(chan)(chan)生過熱(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)，如果鍋(guo)爐不(bu)裝備(bei)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)器(qi)，就無法(fa)將(jiang)鍋(guo)爐出口蒸(zheng)(zheng)汽(qi)(qi)(qi)溫(wen)(wen)度(du)控(kong)制(zhi)在需(xu)要(yao)范(fan)圍內，會使鍋(guo)爐汽(qi)(qi)(qi)輪機等(deng)設(she)備(bei)因超(chao)溫(wen)(wen)損壞(huai)或造成重(zhong)大(da)事故。同(tong)(tong)(tong)時(shi)，在化(hua)工(gong)(gong)(gong)(gong)、輕工(gong)(gong)(gong)(gong)、醫藥(yao)、食品加(jia)工(gong)(gong)(gong)(gong)等(deng)一切使用蒸(zheng)(zheng)汽(qi)(qi)(qi)的(de)生產(chan)(chan)工(gong)(gong)(gong)(gong)藝流程(cheng)中(zhong)，過熱(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)作為機械能量的(de)產(chan)(chan)生提供了能源。而(er)(er)許多情況下(xia)，飽(bao)(bao)和蒸(zheng)(zheng)汽(qi)(qi)(qi)是(shi)(shi)更(geng)適合(he)(he)使用的(de)，由于工(gong)(gong)(gong)(gong)藝及設(she)備(bei)的(de)原因，對(dui)(dui)(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)、溫(wen)(wen)度(du)的(de)控(kong)制(zhi)也是(shi)(shi)必不(bu)可(ke)少(shao)的(de)，通(tong)過減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)可(ke)以得(de)到合(he)(he)適的(de)動力(li)蒸(zheng)(zheng)汽(qi)(qi)(qi)。例如：當換熱(re)器(qi)用于制(zhi)程(cheng)操(cao)作時(shi)，使用過熱(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)由于低(di)的(de)傳熱(re)系數(shu)而(er)(er)降低(di)效率，使用飽(bao)(bao)和蒸(zheng)(zheng)汽(qi)(qi)(qi)更(geng)加(jia)適合(he)(he)。另外當高(gao)壓(ya)(ya)(ya)(ya)(ya)的(de)干飽(bao)(bao)和蒸(zheng)(zheng)汽(qi)(qi)(qi)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)至(zhi)低(di)壓(ya)(ya)(ya)(ya)(ya)時(shi)，在下(xia)游(you)出口會產(chan)(chan)生過熱(re)度(du)。這樣(yang)都需(xu)要(yao)將(jiang)過熱(re)的(de)蒸(zheng)(zheng)汽(qi)(qi)(qi)降溫(wen)(wen)至(zhi)所需(xu)的(de)接近(jin)飽(bao)(bao)和的(de)溫(wen)(wen)度(du)，這就需(xu)要(yao)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)器(qi)。在很(hen)(hen)多情況下(xia)需(xu)要(yao)對(dui)(dui)(dui)高(gao)壓(ya)(ya)(ya)(ya)(ya)過熱(re)的(de)蒸(zheng)(zheng)汽(qi)(qi)(qi)同(tong)(tong)(tong)時(shi)進行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)和減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)是(shi)(shi)節能環保(bao)產(chan)(chan)品。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)配上(shang)相應的(de)工(gong)(gong)(gong)(gong)業(ye)(ye)自動化(hua)儀表（即熱(re)控(kong)柜），可(ke)對(dui)(dui)(dui)電站(zhan)或工(gong)(gong)(gong)(gong)業(ye)(ye)鍋(guo)爐及熱(re)電廠(chang)等(deng)處輸送(song)來的(de)一次(ci)（新）蒸(zheng)(zheng)汽(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)P1、溫(wen)(wen)度(du)T1進行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)，使其(qi)二(er)次(ci)蒸(zheng)(zheng)汽(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)P2、溫(wen)(wen)度(du)T2達到生產(chan)(chan)工(gong)(gong)(gong)(gong)藝所需(xu)的(de)要(yao)求。廣(guang)泛用于熱(re)電廠(chang)、集(ji)中(zhong)供熱(re)、食品工(gong)(gong)(gong)(gong)業(ye)(ye)、石化(hua)工(gong)(gong)(gong)(gong)業(ye)(ye)、紡織工(gong)(gong)(gong)(gong)業(ye)(ye)、橡膠工(gong)(gong)(gong)(gong)業(ye)(ye)、造紙(zhi)和紙(zhi)漿工(gong)(gong)(gong)(gong)業(ye)(ye)、煙草工(gong)(gong)(gong)(gong)業(ye)(ye)、制(zhi)藥(yao)等(deng)其(qi)它(ta)很(hen)(hen)多行(xing)業(ye)(ye)。為了滿足不(bu)同(tong)(tong)(tong)設(she)備(bei)工(gong)(gong)(gong)(gong)藝要(yao)求，我公司提供不(bu)同(tong)(tong)(tong)類型的(de)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)（減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)、減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)）器(qi)，并實現全套(tao)智(zhi)能化(hua)自動控(kong)制(zhi)或DCS系統聯網。
減(jian)(jian)(jian)溫減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置根據一次（新）蒸汽壓(ya)(ya)(ya)(ya)力P1、溫度T1、可分(fen)為(wei)高(gao)溫高(gao)壓(ya)(ya)(ya)(ya)減(jian)(jian)(jian)溫減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置、次高(gao)壓(ya)(ya)(ya)(ya)減(jian)(jian)(jian)溫減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置、中(zhong)溫中(zhong)壓(ya)(ya)(ya)(ya)減(jian)(jian)(jian)溫減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置；減(jian)(jian)(jian)溫減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置根據使用情況又可分(fen)為(wei)減(jian)(jian)(jian)溫裝(zhuang)置、減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置、減(jian)(jian)(jian)溫減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置，
減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)一(yi)般(ban)根據一(yi)次(ci)(ci)蒸(zheng)汽(qi)（新(xin)蒸(zheng)汽(qi)）和(he)二次(ci)(ci)蒸(zheng)汽(qi)（即減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)后的(de)(de)(de)蒸(zheng)汽(qi)）的(de)(de)(de)參(can)數及用(yong)量進行(xing)選擇，經(jing)常運行(xing)的(de)(de)(de)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)一(yi)般(ban)設(she)置(zhi)(zhi)兩套，其(qi)中一(yi)套作為備(bei)用(yong)；不經(jing)常運行(xing)的(de)(de)(de)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)一(yi)般(ban)不考(kao)慮備(bei)用(yong)；備(bei)用(yong)的(de)(de)(de)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)應處于熱備(bei)用(yong)狀態。設(she)計(ji)計(ji)算時根據二次(ci)(ci)蒸(zheng)汽(qi)的(de)(de)(de)量確定進入(ru)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)的(de)(de)(de)一(yi)次(ci)(ci)蒸(zheng)汽(qi)和(he)減(jian)(jian)(jian)(jian)(jian)溫(wen)水量，減(jian)(jian)(jian)(jian)(jian)溫(wen)水壓(ya)(ya)(ya)(ya)(ya)力、溫(wen)度應滿足噴水及霧化的(de)(de)(de)要(yao)求，水質不低于蒸(zheng)汽(qi)品質。
2、減(jian)溫(wen)減(jian)壓(ya)裝置型號編制
裝置的型號表示方法如下：
注1:對于(yu)減溫裝置(zhi)和(he)減壓裝置(zhi)，其代(dai)號則分別為(wei)W或(huo)Y表(biao)示。
注(zhu)2:型號有關的壓(ya)力(li)值(zhi)，均保留一位小數。
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(ya)(ya)力(li)(li)3.82MPa，溫度450℃；出口蒸(zheng)汽壓(ya)(ya)力(li)(li)為0.98MPa，溫度260℃；溫度給(gei)水壓(ya)(ya)力(li)(li)為8.0MPa，給(gei)水溫度為104℃的減溫減壓(ya)(ya)裝置。
3、減(jian)溫減(jian)壓(ya)裝置執行標(biao)準
減(jian)溫減(jian)壓(ya)裝置(zhi)標準：JB/T6323-2002《減(jian)溫減(jian)壓(ya)裝置(zhi)》
減(jian)溫減(jian)壓閥標準：GB/10868-2005《電站減(jian)溫減(jian)壓閥》
給(gei)水調節(jie)閥標準：GB/10869-2005《電站(zhan)調節(jie)閥》
4、減溫減壓裝置(zhi)分類方(fang)法
A、按結構分類
1)、一體式減溫(wen)減壓(ya)裝置(zhi)；（WY型）
2)、分體式減溫減壓裝置；（Y-W型）
3)、減溫裝(zhuang)置（W型）；
4)、減壓裝置（Y型）；
B、按(an)蒸汽(qi)參數分類：
1)、中(zhong)(zhong)溫(wen)中(zhong)(zhong)壓(ya)減溫(wen)減壓(ya)裝置；（P1≤3.82MPa，溫(wen)度T1≤425℃）；
2)、次高壓(ya)減溫減壓(ya)裝置(zhi)；（P1≤5.4MPa，溫度(du)T1≤485℃）；
3)、高(gao)溫高(gao)壓減(jian)溫減(jian)壓裝置(zhi)；（P1≤10MPa，溫度T1≤540℃）；
5、減溫(wen)減壓(ya)裝置(zhi)主要性(xing)能指(zhi)標
1)、進口蒸(zheng)汽壓(ya)力P1和溫度T1
中溫中壓：P1≤3.82MPa，溫度T1≤425℃。
次(ci)高(gao)溫高(gao)壓(ya)：P1≤5.4MPa，溫度(du)T1≤485℃。
高溫(wen)高壓：P1≤10MPa，溫(wen)度(du)T1≤540℃。
2)、出口蒸汽流(liu)量Q
減溫(wen)減壓裝置(zhi)出口流量Q的變化范圍為10%Q~120%Q，在此范圍內(nei)調節比較理想。
若(ruo)有特殊(shu)要求，可與本公(gong)司協商另(ling)定。
3)、出(chu)口蒸汽壓力P2
出(chu)口蒸汽壓力(li)P2的調節精(jing)度不低(di)于2.5級。誤(wu)差不大于±0.04MPa；
4)、出口蒸汽溫(wen)度T2
出口蒸汽溫(wen)度T2的調節精度不低(di)于2.5級(ji)。±2.5℃；
5)、噪音
裝(zhuang)置正常運行時，在減(jian)溫減(jian)壓閥(fa)下游一米，同(tong)時距管壁一米處測其噪(zao)音(yin)，噪(zao)音(yin)音(yin)級應
不大于85分貝。
6、減溫減壓裝置訂貨須知
訂(ding)合(he)同時請提供：
1)、出口(kou)蒸(zheng)汽(qi)流量Q、進口(kou)蒸(zheng)汽(qi)壓(ya)力P1、溫(wen)度T1、出口(kou)蒸(zheng)汽(qi)壓(ya)力P2、溫(wen)度T2；
2)、減(jian)溫給水壓力Pb、溫度tb；
3)、注明控制(zhi)方(fang)式；（儀表(biao)盤控制(zhi)，PLC、DCS控制(zhi)，DCS監視）
4)、控制(zhi)類別：電(dian)動(dong)、氣(qi)動(dong)、液動(dong)；
選擇氣(qi)動閥時還必(bi)須提供：
1)、作(zuo)用(yong)形式(shi)(shi)：氣開(kai)式(shi)(shi)或氣閉式(shi)(shi)；正(zheng)作(zuo)用(yong)或反作(zuo)用(yong)；
2)、氣(qi)源壓力；
3)、其(qi)它(ta)附件說(shuo)明：用戶如有特殊要求，應在商(shang)定后注明或另行簽(qian)訂技(ji)術協議。
注：1出(chu)口(kou)蒸(zheng)汽(qi)(qi)壓(ya)力(li)(li)P2應(ying)(ying)不(bu)低于飽和溫(wen)度(du)所(suo)對應(ying)(ying)的(de)壓(ya)力(li)(li)值(zhi)(zhi)，或出(chu)口(kou)蒸(zheng)汽(qi)(qi)溫(wen)度(du)T2應(ying)(ying)不(bu)低于P2所(suo)對應(ying)(ying)的(de)飽和溫(wen)度(du)值(zhi)(zhi)；
2對(dui)減溫(wen)減壓一體(ti)式結構：減溫(wen)給水(shui)的(de)壓力Pb≥0.6P1＋0.8MPa；若(ruo)Pb值(zhi)太低，將無法噴(pen)入減溫(wen)減壓閥(fa)內(nei)減溫(wen)。
（3）對減(jian)(jian)溫減(jian)(jian)壓(ya)分(fen)體式結(jie)構：減(jian)(jian)溫給水的壓(ya)力(li)Pb≥P2＋0.6MPa；
附表：基(ji)本訂(ding)貨要(yao)求
注：不加注壓力值為表壓
減(jian)溫減(jian)壓裝(zhuang)置的供貨范圍為括號(hao)標志以內，主(zhu)要有
1.減(jian)(jian)壓系統(tong)：減(jian)(jian)溫減(jian)(jian)壓閥或減(jian)(jian)壓閥、節流孔板等；
2.減溫系統：給水調節閥(fa)或可調噴嘴(zui)、截止閥(fa)、節流閥(fa)等；
3.安(an)全系統：安(an)全閥、止(zhi)回閥等；
4.管(guan)路系統：蒸汽管(guan)道(dao)、混合管(guan)道(dao)、過渡管(guan)、減溫(wen)水管(guan)等；
5.配套附件：截(jie)止閥、雙(shuang)金屬(shu)溫(wen)度計及(ji)接管(guan)、壓力(li)表及(ji)三通閥、彎道、接頭、法蘭、襯墊、
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