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　　1、減(jian)溫減(jian)壓裝置(zhi)用途(tu)

　　減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)裝置(zhi)是用(yong)(yong)來調節蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)力、溫(wen)度(du)的(de)(de)重(zhong)要裝置(zhi)，在(zai)(zai)火力發(fa)電廠中(zhong)鍋(guo)爐產(chan)生(sheng)(sheng)過(guo)(guo)(guo)熱(re)(re)(re)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)，如果鍋(guo)爐不(bu)(bu)裝備(bei)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)器，就無法(fa)將鍋(guo)爐出口(kou)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)溫(wen)度(du)控(kong)(kong)(kong)制(zhi)在(zai)(zai)需(xu)要范圍(wei)內，會(hui)(hui)使(shi)鍋(guo)爐汽(qi)(qi)(qi)(qi)輪機等設(she)備(bei)因超(chao)溫(wen)損壞或造成重(zhong)大事故。同(tong)時，在(zai)(zai)化(hua)工(gong)(gong)(gong)(gong)、輕(qing)工(gong)(gong)(gong)(gong)、醫藥(yao)、食品(pin)加(jia)工(gong)(gong)(gong)(gong)等一切使(shi)用(yong)(yong)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)的(de)(de)生(sheng)(sheng)產(chan)工(gong)(gong)(gong)(gong)藝(yi)流程中(zhong)，過(guo)(guo)(guo)熱(re)(re)(re)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)作為(wei)機械能量(liang)的(de)(de)產(chan)生(sheng)(sheng)提供了能源。而許多情況下，飽(bao)和蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)是更適合(he)使(shi)用(yong)(yong)的(de)(de)，由于(yu)工(gong)(gong)(gong)(gong)藝(yi)及設(she)備(bei)的(de)(de)原因，對壓(ya)力、溫(wen)度(du)的(de)(de)控(kong)(kong)(kong)制(zhi)也是必不(bu)(bu)可少的(de)(de)，通過(guo)(guo)(guo)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)裝置(zhi)可以得(de)到合(he)適的(de)(de)動(dong)力蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)。例(li)如：當(dang)(dang)換熱(re)(re)(re)器用(yong)(yong)于(yu)制(zhi)程操作時，使(shi)用(yong)(yong)過(guo)(guo)(guo)熱(re)(re)(re)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)由于(yu)低(di)的(de)(de)傳熱(re)(re)(re)系數而降低(di)效率，使(shi)用(yong)(yong)飽(bao)和蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)更加(jia)適合(he)。另外當(dang)(dang)高壓(ya)的(de)(de)干(gan)飽(bao)和蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)至低(di)壓(ya)時，在(zai)(zai)下游(you)出口(kou)會(hui)(hui)產(chan)生(sheng)(sheng)過(guo)(guo)(guo)熱(re)(re)(re)度(du)。這樣都需(xu)要將過(guo)(guo)(guo)熱(re)(re)(re)的(de)(de)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)降溫(wen)至所(suo)需(xu)的(de)(de)接近飽(bao)和的(de)(de)溫(wen)度(du)，這就需(xu)要減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)器。在(zai)(zai)很(hen)多情況下需(xu)要對高壓(ya)過(guo)(guo)(guo)熱(re)(re)(re)的(de)(de)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)同(tong)時進行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)和減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)裝置(zhi)是節能環保產(chan)品(pin)。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)裝置(zhi)配(pei)上(shang)相應(ying)的(de)(de)工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)自(zi)(zi)動(dong)化(hua)儀表（即熱(re)(re)(re)控(kong)(kong)(kong)柜），可對電站(zhan)或工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)鍋(guo)爐及熱(re)(re)(re)電廠等處輸送來的(de)(de)一次(ci)（新）蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)力P1、溫(wen)度(du)T1進行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)，使(shi)其二次(ci)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)力P2、溫(wen)度(du)T2達到生(sheng)(sheng)產(chan)工(gong)(gong)(gong)(gong)藝(yi)所(suo)需(xu)的(de)(de)要求(qiu)。廣泛(fan)用(yong)(yong)于(yu)熱(re)(re)(re)電廠、集中(zhong)供熱(re)(re)(re)、食品(pin)工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)、石(shi)化(hua)工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)、紡織工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)、橡膠工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)、造紙和紙漿工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)、煙草(cao)工(gong)(gong)(gong)(gong)業(ye)(ye)(ye)、制(zhi)藥(yao)等其它很(hen)多行(xing)業(ye)(ye)(ye)。為(wei)了滿足不(bu)(bu)同(tong)設(she)備(bei)工(gong)(gong)(gong)(gong)藝(yi)要求(qiu)，我公司提供不(bu)(bu)同(tong)類型的(de)(de)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)（減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)、減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)）器，并實現全套智(zhi)能化(hua)自(zi)(zi)動(dong)控(kong)(kong)(kong)制(zhi)或DCS系統聯網。

　　減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)根據(ju)一次（新）蒸汽(qi)壓(ya)力(li)P1、溫(wen)度T1、可分(fen)為高(gao)溫(wen)高(gao)壓(ya)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)、次高(gao)壓(ya)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)、中溫(wen)中壓(ya)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)；減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)根據(ju)使用情況又可分(fen)為減(jian)(jian)(jian)(jian)(jian)溫(wen)裝(zhuang)(zhuang)置(zhi)(zhi)、減(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)、減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)，

　　減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)一(yi)(yi)般根(gen)據(ju)一(yi)(yi)次(ci)蒸(zheng)汽(qi)(qi)（新(xin)蒸(zheng)汽(qi)(qi)）和(he)(he)二(er)次(ci)蒸(zheng)汽(qi)(qi)（即減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)后的(de)(de)(de)蒸(zheng)汽(qi)(qi)）的(de)(de)(de)參數(shu)及(ji)用(yong)量(liang)進行(xing)選擇，經(jing)常運行(xing)的(de)(de)(de)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)一(yi)(yi)般設(she)置(zhi)兩套，其中(zhong)一(yi)(yi)套作為備(bei)用(yong)；不(bu)經(jing)常運行(xing)的(de)(de)(de)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)一(yi)(yi)般不(bu)考慮備(bei)用(yong)；備(bei)用(yong)的(de)(de)(de)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)應處于熱備(bei)用(yong)狀態(tai)。設(she)計計算(suan)時(shi)根(gen)據(ju)二(er)次(ci)蒸(zheng)汽(qi)(qi)的(de)(de)(de)量(liang)確定進入減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)的(de)(de)(de)一(yi)(yi)次(ci)蒸(zheng)汽(qi)(qi)和(he)(he)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)水(shui)(shui)(shui)量(liang)，減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)水(shui)(shui)(shui)壓(ya)(ya)力、溫(wen)(wen)(wen)(wen)度應滿足噴(pen)水(shui)(shui)(shui)及(ji)霧化的(de)(de)(de)要求，水(shui)(shui)(shui)質不(bu)低于蒸(zheng)汽(qi)(qi)品質。

　　2、減溫減壓裝置型號(hao)編制

　　裝置的型(xing)號表(biao)示方法如(ru)下：

　　注1:對于減溫(wen)裝置和(he)減壓裝置，其代號則分別為W或Y表示(shi)。

　　注(zhu)2:型號有關的壓力值(zhi)，均保留一位小數。

　　例(li)：WY80-3.82/450-0.98/260-8.0/104表示出(chu)口蒸氣(qi)流量為(wei)80t/h；進口蒸氣(qi)壓(ya)力(li)3.82MPa，溫(wen)(wen)度450℃；出(chu)口蒸汽壓(ya)力(li)為(wei)0.98MPa，溫(wen)(wen)度260℃；溫(wen)(wen)度給水(shui)壓(ya)力(li)為(wei)8.0MPa，給水(shui)溫(wen)(wen)度為(wei)104℃的(de)減(jian)溫(wen)(wen)減(jian)壓(ya)裝置。

　　3、減(jian)溫(wen)減(jian)壓裝(zhuang)置執行標準(zhun)

　　減溫(wen)減壓(ya)裝(zhuang)(zhuang)置(zhi)標(biao)準：JB/T6323-2002《減溫(wen)減壓(ya)裝(zhuang)(zhuang)置(zhi)》

　　減溫(wen)減壓(ya)(ya)閥標準：GB/10868-2005《電站減溫(wen)減壓(ya)(ya)閥》

　　給水調(diao)節閥標準：GB/10869-2005《電站調(diao)節閥》

　　4、減(jian)溫減(jian)壓裝置分類方法

　　A、按結構分類

　　1)、一(yi)體式減溫減壓裝置；（WY型）

　　2)、分(fen)體式減(jian)溫減(jian)壓裝置；（Y-W型）

　　3)、減溫(wen)裝置（W型）；

　　4)、減壓裝(zhuang)置(zhi)（Y型）；

　　B、按(an)蒸汽參數分類(lei)：

　　1)、中(zhong)溫(wen)中(zhong)壓減(jian)溫(wen)減(jian)壓裝置；（P1≤3.82MPa，溫(wen)度(du)T1≤425℃）；

　　2)、次高壓減溫減壓裝置；（P1≤5.4MPa，溫度T1≤485℃）；

　　3)、高(gao)溫(wen)高(gao)壓減溫(wen)減壓裝置；（P1≤10MPa，溫(wen)度(du)T1≤540℃）；

　　5、減溫減壓裝置主要性能指(zhi)標

　　1)、進口蒸汽壓(ya)力P1和(he)溫度(du)T1

　　中(zhong)溫中(zhong)壓：P1≤3.82MPa，溫度T1≤425℃。

　　次高溫高壓(ya)：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(ya)裝置出(chu)口流量Q的(de)變化范圍(wei)(wei)為(wei)10%Q~120%Q，在此范圍(wei)(wei)內調節比較理(li)想。

　　若有特殊要(yao)求，可(ke)與本(ben)公司協商(shang)另定。

　　3)、出口蒸(zheng)汽壓力P2

　　出口蒸汽(qi)壓力P2的調節精度不低于(yu)(yu)2.5級(ji)。誤差不大于(yu)(yu)±0.04MPa；

　　4)、出口蒸汽溫度T2

　　出口蒸汽溫度(du)T2的調節精(jing)度(du)不(bu)低(di)于2.5級。±2.5℃；

　　5)、噪音

　　裝置正常(chang)運行時，在減(jian)溫減(jian)壓(ya)閥下游一米(mi)，同時距管壁一米(mi)處(chu)測其噪音(yin)，噪音(yin)音(yin)級應

　　不大于85分貝。

　　6、減(jian)溫減(jian)壓(ya)裝置訂貨須知(zhi)

　　訂合同時請提供：

　　1)、出口蒸汽(qi)流(liu)量(liang)Q、進口蒸汽(qi)壓(ya)力(li)P1、溫度T1、出口蒸汽(qi)壓(ya)力(li)P2、溫度T2；

　　2)、減溫給水壓力Pb、溫度tb；

　　3)、注明控(kong)制(zhi)方式；（儀表盤控(kong)制(zhi)，PLC、DCS控(kong)制(zhi)，DCS監視(shi)）

　　4)、控制類別：電動、氣動、液動；

　　選擇氣動閥時還(huan)必須提供：

　　1)、作用(yong)形(xing)式(shi)(shi)：氣(qi)(qi)開式(shi)(shi)或氣(qi)(qi)閉式(shi)(shi)；正作用(yong)或反作用(yong)；

　　2)、氣(qi)源壓力；

　　3)、其它附件說明：用(yong)戶如有特殊要(yao)求，應在(zai)商定后注(zhu)明或另(ling)行簽(qian)訂技術協議。

　　注：1出口(kou)蒸汽壓力P2應(ying)不低于飽(bao)和(he)溫(wen)(wen)度所對應(ying)的壓力值，或(huo)出口(kou)蒸汽溫(wen)(wen)度T2應(ying)不低于P2所對應(ying)的飽(bao)和(he)溫(wen)(wen)度值；

　　2對減(jian)溫(wen)(wen)減(jian)壓(ya)一(yi)體(ti)式(shi)結構(gou)：減(jian)溫(wen)(wen)給水的壓(ya)力Pb≥0.6P1＋0.8MPa；若Pb值太(tai)低，將無法噴入減(jian)溫(wen)(wen)減(jian)壓(ya)閥內減(jian)溫(wen)(wen)。

　　（3）對減溫(wen)減壓分體式結(jie)構：減溫(wen)給水的壓力Pb≥P2＋0.6MPa；

　　附表：基本訂貨要求

　　注：不加注壓力值(zhi)為表壓

　　減溫(wen)減壓裝置的供貨(huo)范圍為括號標志以內，主要有

　　1.減壓(ya)(ya)系統：減溫減壓(ya)(ya)閥或減壓(ya)(ya)閥、節流孔板等；

　　2.減溫系統：給水調節(jie)閥或可(ke)調噴嘴(zui)、截止閥、節(jie)流(liu)閥等(deng)；

　　3.安全系統：安全閥、止回閥等(deng)；

　　4.管(guan)路系統：蒸(zheng)汽管(guan)道、混合(he)管(guan)道、過渡管(guan)、減溫水管(guan)等；

　　5.配(pei)套附件：截止(zhi)閥、雙金屬(shu)溫度計及接管、壓(ya)力表及三通閥、彎道(dao)、接頭、法蘭、襯墊、