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　　1、減(jian)溫減(jian)壓裝置用途(tu)

　　減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)裝置是(shi)用(yong)來調(diao)節(jie)(jie)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)(li)、溫(wen)度(du)的(de)重要(yao)(yao)裝置，在(zai)(zai)火力(li)(li)發電(dian)(dian)廠中(zhong)鍋爐產(chan)(chan)生(sheng)過熱(re)(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)，如果鍋爐不(bu)(bu)(bu)裝備(bei)減(jian)(jian)(jian)(jian)(jian)溫(wen)器，就無法將(jiang)鍋爐出口蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)溫(wen)度(du)控(kong)制(zhi)在(zai)(zai)需要(yao)(yao)范圍內，會使(shi)(shi)(shi)(shi)鍋爐汽(qi)(qi)(qi)(qi)輪機等(deng)設(she)備(bei)因(yin)超溫(wen)損壞或(huo)造成重大事故。同(tong)時(shi)，在(zai)(zai)化(hua)工(gong)(gong)(gong)(gong)(gong)、輕工(gong)(gong)(gong)(gong)(gong)、醫藥(yao)、食品加(jia)工(gong)(gong)(gong)(gong)(gong)等(deng)一切使(shi)(shi)(shi)(shi)用(yong)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)的(de)生(sheng)產(chan)(chan)工(gong)(gong)(gong)(gong)(gong)藝(yi)流程中(zhong)，過熱(re)(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)作(zuo)為(wei)機械(xie)能量的(de)產(chan)(chan)生(sheng)提(ti)供了(le)能源。而許(xu)多(duo)情況下(xia)(xia)，飽(bao)(bao)和(he)(he)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)是(shi)更(geng)適(shi)合(he)使(shi)(shi)(shi)(shi)用(yong)的(de)，由于工(gong)(gong)(gong)(gong)(gong)藝(yi)及(ji)設(she)備(bei)的(de)原因(yin)，對壓(ya)(ya)(ya)力(li)(li)、溫(wen)度(du)的(de)控(kong)制(zhi)也是(shi)必不(bu)(bu)(bu)可少的(de)，通過減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)裝置可以得到合(he)適(shi)的(de)動力(li)(li)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)。例如：當(dang)換熱(re)(re)器用(yong)于制(zhi)程操(cao)作(zuo)時(shi)，使(shi)(shi)(shi)(shi)用(yong)過熱(re)(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)由于低(di)的(de)傳熱(re)(re)系數而降低(di)效率，使(shi)(shi)(shi)(shi)用(yong)飽(bao)(bao)和(he)(he)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)更(geng)加(jia)適(shi)合(he)。另(ling)外當(dang)高壓(ya)(ya)(ya)的(de)干飽(bao)(bao)和(he)(he)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)至(zhi)低(di)壓(ya)(ya)(ya)時(shi)，在(zai)(zai)下(xia)(xia)游(you)出口會產(chan)(chan)生(sheng)過熱(re)(re)度(du)。這樣都需要(yao)(yao)將(jiang)過熱(re)(re)的(de)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)降溫(wen)至(zhi)所需的(de)接近飽(bao)(bao)和(he)(he)的(de)溫(wen)度(du)，這就需要(yao)(yao)減(jian)(jian)(jian)(jian)(jian)溫(wen)器。在(zai)(zai)很多(duo)情況下(xia)(xia)需要(yao)(yao)對高壓(ya)(ya)(ya)過熱(re)(re)的(de)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)同(tong)時(shi)進(jin)(jin)行減(jian)(jian)(jian)(jian)(jian)溫(wen)和(he)(he)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)。減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)裝置是(shi)節(jie)(jie)能環保產(chan)(chan)品。減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)裝置配上(shang)相應(ying)的(de)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)自動化(hua)儀(yi)表(biao)（即熱(re)(re)控(kong)柜），可對電(dian)(dian)站或(huo)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)鍋爐及(ji)熱(re)(re)電(dian)(dian)廠等(deng)處輸(shu)送來的(de)一次(ci)（新）蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)(li)P1、溫(wen)度(du)T1進(jin)(jin)行減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)，使(shi)(shi)(shi)(shi)其二次(ci)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)力(li)(li)P2、溫(wen)度(du)T2達到生(sheng)產(chan)(chan)工(gong)(gong)(gong)(gong)(gong)藝(yi)所需的(de)要(yao)(yao)求。廣泛用(yong)于熱(re)(re)電(dian)(dian)廠、集中(zhong)供熱(re)(re)、食品工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、石(shi)化(hua)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、紡織工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、橡膠工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、造紙和(he)(he)紙漿工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、煙草(cao)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、制(zhi)藥(yao)等(deng)其它很多(duo)行業(ye)(ye)。為(wei)了(le)滿足不(bu)(bu)(bu)同(tong)設(she)備(bei)工(gong)(gong)(gong)(gong)(gong)藝(yi)要(yao)(yao)求，我公司提(ti)供不(bu)(bu)(bu)同(tong)類型的(de)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)（減(jian)(jian)(jian)(jian)(jian)溫(wen)、減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)）器，并(bing)實現全套智能化(hua)自動控(kong)制(zhi)或(huo)DCS系統聯網。

　　減(jian)溫減(jian)壓(ya)(ya)裝(zhuang)置(zhi)(zhi)(zhi)(zhi)根據一次（新(xin)）蒸(zheng)汽壓(ya)(ya)力P1、溫度T1、可分為(wei)高(gao)溫高(gao)壓(ya)(ya)減(jian)溫減(jian)壓(ya)(ya)裝(zhuang)置(zhi)(zhi)(zhi)(zhi)、次高(gao)壓(ya)(ya)減(jian)溫減(jian)壓(ya)(ya)裝(zhuang)置(zhi)(zhi)(zhi)(zhi)、中溫中壓(ya)(ya)減(jian)溫減(jian)壓(ya)(ya)裝(zhuang)置(zhi)(zhi)(zhi)(zhi)；減(jian)溫減(jian)壓(ya)(ya)裝(zhuang)置(zhi)(zhi)(zhi)(zhi)根據使用情(qing)況又可分為(wei)減(jian)溫裝(zhuang)置(zhi)(zhi)(zhi)(zhi)、減(jian)壓(ya)(ya)裝(zhuang)置(zhi)(zhi)(zhi)(zhi)、減(jian)溫減(jian)壓(ya)(ya)裝(zhuang)置(zhi)(zhi)(zhi)(zhi)，

　　減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)裝置一(yi)(yi)般根(gen)據一(yi)(yi)次(ci)蒸汽（新(xin)蒸汽）和(he)二次(ci)蒸汽（即減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)后的蒸汽）的參數及用(yong)量進行(xing)選擇，經常運行(xing)的減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)裝置一(yi)(yi)般設置兩套(tao)，其中一(yi)(yi)套(tao)作(zuo)為備用(yong)；不經常運行(xing)的減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)裝置一(yi)(yi)般不考慮備用(yong)；備用(yong)的減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)裝置應(ying)處于熱備用(yong)狀態。設計計算時根(gen)據二次(ci)蒸汽的量確(que)定進入(ru)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)裝置的一(yi)(yi)次(ci)蒸汽和(he)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)水量，減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)水壓(ya)力、溫(wen)(wen)(wen)(wen)(wen)度(du)應(ying)滿足噴水及霧(wu)化的要求，水質不低于蒸汽品(pin)質。

　　2、減溫減壓(ya)裝置(zhi)型號編制

　　裝置的型號表示方法如下：

　　注1:對于減溫裝置(zhi)和(he)減壓裝置(zhi)，其代號則分別(bie)為W或(huo)Y表示(shi)。

　　注2:型號有關的壓力值，均保留一位小(xiao)數。

　　例(li)：WY80-3.82/450-0.98/260-8.0/104表(biao)示出口蒸氣流(liu)量為(wei)80t/h；進口蒸氣壓(ya)(ya)力3.82MPa，溫(wen)度(du)450℃；出口蒸汽壓(ya)(ya)力為(wei)0.98MPa，溫(wen)度(du)260℃；溫(wen)度(du)給(gei)水壓(ya)(ya)力為(wei)8.0MPa，給(gei)水溫(wen)度(du)為(wei)104℃的減溫(wen)減壓(ya)(ya)裝置(zhi)。

　　3、減溫減壓裝置執行標準

　　減(jian)溫減(jian)壓裝置標準：JB/T6323-2002《減(jian)溫減(jian)壓裝置》

　　減(jian)溫減(jian)壓閥(fa)標準：GB/10868-2005《電站減(jian)溫減(jian)壓閥(fa)》

　　給水(shui)調節(jie)閥標準(zhun)：GB/10869-2005《電站調節(jie)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(zhuang)置；（WY型(xing)）

　　2)、分體式減(jian)(jian)溫(wen)減(jian)(jian)壓裝置；（Y-W型）

　　3)、減溫裝置（W型）；

　　4)、減(jian)壓(ya)裝置（Y型）；

　　B、按蒸(zheng)汽(qi)參數分類(lei)：

　　1)、中(zhong)(zhong)溫中(zhong)(zhong)壓(ya)(ya)減溫減壓(ya)(ya)裝(zhuang)置；（P1≤3.82MPa，溫度T1≤425℃）；

　　2)、次高(gao)壓減溫減壓裝置；（P1≤5.4MPa，溫度T1≤485℃）；

　　3)、高溫高壓減(jian)(jian)溫減(jian)(jian)壓裝置；（P1≤10MPa，溫度T1≤540℃）；

　　5、減溫(wen)減壓裝置主要性能指(zhi)標

　　1)、進口蒸(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(du)T1≤485℃。

　　高溫高壓：P1≤10MPa，溫度T1≤540℃。

　　2)、出口蒸汽(qi)流(liu)量Q

　　減(jian)溫減(jian)壓裝置出口流量(liang)Q的變化范(fan)圍為10%Q~120%Q，在此范(fan)圍內調節(jie)比較理想。

　　若有(you)特殊要求(qiu)，可與本公司協(xie)商另定。

　　3)、出(chu)口蒸(zheng)汽壓(ya)力P2

　　出口蒸汽壓(ya)力P2的調節精度不低(di)于2.5級。誤差(cha)不大(da)于±0.04MPa；

　　4)、出口蒸(zheng)汽溫(wen)度T2

　　出口蒸汽溫度T2的調節(jie)精度不低于2.5級(ji)。±2.5℃；

　　5)、噪音

　　裝置正常(chang)運行時，在減溫減壓閥下游(you)一米，同時距管壁一米處(chu)測(ce)其(qi)噪音，噪音音級應

　　不大(da)于85分貝。

　　6、減溫減壓裝置訂貨須知

　　訂(ding)合同時(shi)請提供：

　　1)、出口(kou)蒸汽(qi)流(liu)量(liang)Q、進口(kou)蒸汽(qi)壓力(li)P1、溫度T1、出口(kou)蒸汽(qi)壓力(li)P2、溫度T2；

　　2)、減溫(wen)給水壓力Pb、溫(wen)度tb；

　　3)、注(zhu)明控制(zhi)方(fang)式；（儀表盤控制(zhi)，PLC、DCS控制(zhi)，DCS監視）

　　4)、控制(zhi)類(lei)別(bie)：電動、氣動、液(ye)動；

　　選擇氣動閥時還必須提供(gong)：

　　1)、作用形式：氣開式或氣閉式；正(zheng)作用或反作用；

　　2)、氣源壓力(li)；

　　3)、其它附件說明(ming)：用戶(hu)如有(you)特殊(shu)要求，應在(zai)商定后(hou)注明(ming)或另行(xing)簽(qian)訂技術協(xie)議。

　　注(zhu)：1出(chu)(chu)口蒸(zheng)汽壓(ya)力P2應(ying)不低于飽和溫度(du)所對應(ying)的壓(ya)力值，或出(chu)(chu)口蒸(zheng)汽溫度(du)T2應(ying)不低于P2所對應(ying)的飽和溫度(du)值；

　　2對(dui)減(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)壓(ya)一體式結(jie)構(gou)：減(jian)(jian)(jian)(jian)溫(wen)給水(shui)的壓(ya)力(li)Pb≥0.6P1＋0.8MPa；若Pb值(zhi)太(tai)低，將無法噴入(ru)減(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)壓(ya)閥內減(jian)(jian)(jian)(jian)溫(wen)。

　　（3）對減溫(wen)減壓分體(ti)式結構(gou)：減溫(wen)給水的壓力(li)Pb≥P2＋0.6MPa；

　　附表：基本訂貨要(yao)求

　　注：不加注壓力(li)值為表壓

　　減(jian)溫減(jian)壓裝置的供貨范(fan)圍為括(kuo)號標(biao)志(zhi)以內(nei)，主要有

　　1.減壓系(xi)統：減溫(wen)減壓閥或減壓閥、節流孔板等；

　　2.減溫系統：給水調(diao)節閥(fa)(fa)或可調(diao)噴(pen)嘴、截止閥(fa)(fa)、節流閥(fa)(fa)等；

　　3.安全系(xi)統：安全閥、止回(hui)閥等；

　　4.管路(lu)系統：蒸汽管道、混(hun)合(he)管道、過渡管、減溫水管等(deng)；

　　5.配套附(fu)件(jian)：截止閥、雙(shuang)金屬溫度計及接管(guan)、壓力表(biao)及三通閥、彎道(dao)、接頭(tou)、法蘭、襯墊、