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　　1、減溫(wen)減壓裝(zhuang)置用途

　　減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)是(shi)(shi)用來(lai)調(diao)節(jie)蒸(zheng)汽(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)、溫(wen)(wen)(wen)度的(de)(de)(de)重(zhong)要(yao)(yao)裝置(zhi)(zhi)，在(zai)火力(li)發電廠中鍋(guo)爐(lu)(lu)產(chan)生過(guo)熱(re)(re)(re)蒸(zheng)汽(qi)(qi)(qi)，如果鍋(guo)爐(lu)(lu)不裝備減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器，就無法(fa)將鍋(guo)爐(lu)(lu)出(chu)口(kou)蒸(zheng)汽(qi)(qi)(qi)溫(wen)(wen)(wen)度控(kong)制(zhi)在(zai)需要(yao)(yao)范圍內，會使(shi)(shi)鍋(guo)爐(lu)(lu)汽(qi)(qi)(qi)輪機等(deng)設備因超溫(wen)(wen)(wen)損壞或造(zao)成重(zhong)大事(shi)故。同時(shi)(shi)，在(zai)化(hua)(hua)(hua)工(gong)(gong)、輕(qing)工(gong)(gong)、醫藥、食品加工(gong)(gong)等(deng)一切使(shi)(shi)用蒸(zheng)汽(qi)(qi)(qi)的(de)(de)(de)生產(chan)工(gong)(gong)藝(yi)流(liu)程中，過(guo)熱(re)(re)(re)蒸(zheng)汽(qi)(qi)(qi)作為機械能(neng)量的(de)(de)(de)產(chan)生提供(gong)了能(neng)源(yuan)。而許多情況下，飽(bao)(bao)和(he)蒸(zheng)汽(qi)(qi)(qi)是(shi)(shi)更適合(he)(he)使(shi)(shi)用的(de)(de)(de)，由于工(gong)(gong)藝(yi)及(ji)設備的(de)(de)(de)原因，對(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)、溫(wen)(wen)(wen)度的(de)(de)(de)控(kong)制(zhi)也是(shi)(shi)必不可少的(de)(de)(de)，通過(guo)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)可以(yi)得到合(he)(he)適的(de)(de)(de)動力(li)蒸(zheng)汽(qi)(qi)(qi)。例如：當(dang)換熱(re)(re)(re)器用于制(zhi)程操作時(shi)(shi)，使(shi)(shi)用過(guo)熱(re)(re)(re)蒸(zheng)汽(qi)(qi)(qi)由于低(di)的(de)(de)(de)傳(chuan)熱(re)(re)(re)系數(shu)而降(jiang)低(di)效率，使(shi)(shi)用飽(bao)(bao)和(he)蒸(zheng)汽(qi)(qi)(qi)更加適合(he)(he)。另外當(dang)高壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)干飽(bao)(bao)和(he)蒸(zheng)汽(qi)(qi)(qi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)至(zhi)低(di)壓(ya)(ya)(ya)(ya)(ya)時(shi)(shi)，在(zai)下游(you)出(chu)口(kou)會產(chan)生過(guo)熱(re)(re)(re)度。這樣都(dou)需要(yao)(yao)將過(guo)熱(re)(re)(re)的(de)(de)(de)蒸(zheng)汽(qi)(qi)(qi)降(jiang)溫(wen)(wen)(wen)至(zhi)所需的(de)(de)(de)接近飽(bao)(bao)和(he)的(de)(de)(de)溫(wen)(wen)(wen)度，這就需要(yao)(yao)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器。在(zai)很多情況下需要(yao)(yao)對(dui)高壓(ya)(ya)(ya)(ya)(ya)過(guo)熱(re)(re)(re)的(de)(de)(de)蒸(zheng)汽(qi)(qi)(qi)同時(shi)(shi)進行(xing)(xing)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)和(he)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)。減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)是(shi)(shi)節(jie)能(neng)環(huan)保產(chan)品。減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝置(zhi)(zhi)配上相應的(de)(de)(de)工(gong)(gong)業(ye)(ye)(ye)(ye)自動化(hua)(hua)(hua)儀(yi)表（即熱(re)(re)(re)控(kong)柜），可對(dui)電站或工(gong)(gong)業(ye)(ye)(ye)(ye)鍋(guo)爐(lu)(lu)及(ji)熱(re)(re)(re)電廠等(deng)處輸送來(lai)的(de)(de)(de)一次（新）蒸(zheng)汽(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)P1、溫(wen)(wen)(wen)度T1進行(xing)(xing)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)，使(shi)(shi)其二次蒸(zheng)汽(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)P2、溫(wen)(wen)(wen)度T2達(da)到生產(chan)工(gong)(gong)藝(yi)所需的(de)(de)(de)要(yao)(yao)求(qiu)。廣(guang)泛用于熱(re)(re)(re)電廠、集中供(gong)熱(re)(re)(re)、食品工(gong)(gong)業(ye)(ye)(ye)(ye)、石化(hua)(hua)(hua)工(gong)(gong)業(ye)(ye)(ye)(ye)、紡織工(gong)(gong)業(ye)(ye)(ye)(ye)、橡膠工(gong)(gong)業(ye)(ye)(ye)(ye)、造(zao)紙和(he)紙漿工(gong)(gong)業(ye)(ye)(ye)(ye)、煙草工(gong)(gong)業(ye)(ye)(ye)(ye)、制(zhi)藥等(deng)其它很多行(xing)(xing)業(ye)(ye)(ye)(ye)。為了滿足不同設備工(gong)(gong)藝(yi)要(yao)(yao)求(qiu)，我(wo)公司提供(gong)不同類型(xing)的(de)(de)(de)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)（減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)、減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)）器，并實現全(quan)套智(zhi)能(neng)化(hua)(hua)(hua)自動控(kong)制(zhi)或DCS系統聯網。

　　減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)根(gen)據(ju)一(yi)次(ci)（新(xin)）蒸(zheng)汽壓(ya)(ya)(ya)力P1、溫(wen)(wen)度(du)T1、可(ke)分(fen)(fen)為高(gao)(gao)溫(wen)(wen)高(gao)(gao)壓(ya)(ya)(ya)減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)、次(ci)高(gao)(gao)壓(ya)(ya)(ya)減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)、中溫(wen)(wen)中壓(ya)(ya)(ya)減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)；減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)根(gen)據(ju)使用情況又可(ke)分(fen)(fen)為減(jian)(jian)(jian)溫(wen)(wen)裝(zhuang)置(zhi)(zhi)、減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)、減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)，

　　減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)一(yi)(yi)(yi)般(ban)根據一(yi)(yi)(yi)次(ci)蒸(zheng)(zheng)(zheng)汽(qi)(qi)（新蒸(zheng)(zheng)(zheng)汽(qi)(qi)）和二(er)次(ci)蒸(zheng)(zheng)(zheng)汽(qi)(qi)（即減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)后的(de)(de)蒸(zheng)(zheng)(zheng)汽(qi)(qi)）的(de)(de)參數及用(yong)量進行選擇，經常運行的(de)(de)減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)一(yi)(yi)(yi)般(ban)設(she)置(zhi)兩套，其中一(yi)(yi)(yi)套作為備(bei)用(yong)；不(bu)經常運行的(de)(de)減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)一(yi)(yi)(yi)般(ban)不(bu)考慮(lv)備(bei)用(yong)；備(bei)用(yong)的(de)(de)減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)應處(chu)于熱備(bei)用(yong)狀態。設(she)計計算時(shi)根據二(er)次(ci)蒸(zheng)(zheng)(zheng)汽(qi)(qi)的(de)(de)量確定進入減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)置(zhi)的(de)(de)一(yi)(yi)(yi)次(ci)蒸(zheng)(zheng)(zheng)汽(qi)(qi)和減(jian)(jian)(jian)溫(wen)(wen)水量，減(jian)(jian)(jian)溫(wen)(wen)水壓(ya)(ya)力(li)、溫(wen)(wen)度應滿足(zu)噴水及霧化的(de)(de)要求，水質不(bu)低于蒸(zheng)(zheng)(zheng)汽(qi)(qi)品質。

　　2、減溫減壓裝置型號編制

　　裝置(zhi)的型號表示方(fang)法如下(xia)：

　　注1:對于減溫裝置和減壓裝置，其(qi)代號則(ze)分別為(wei)W或Y表示。

　　注2:型號(hao)有關(guan)的壓力值，均保留一位小數(shu)。

　　例：WY80-3.82/450-0.98/260-8.0/104表示出口(kou)蒸(zheng)氣流量為(wei)80t/h；進(jin)口(kou)蒸(zheng)氣壓力3.82MPa，溫(wen)度(du)450℃；出口(kou)蒸(zheng)汽壓力為(wei)0.98MPa，溫(wen)度(du)260℃；溫(wen)度(du)給水(shui)(shui)壓力為(wei)8.0MPa，給水(shui)(shui)溫(wen)度(du)為(wei)104℃的減(jian)溫(wen)減(jian)壓裝(zhuang)置。

　　3、減溫(wen)減壓裝置執(zhi)行標準(zhun)

　　減(jian)(jian)溫減(jian)(jian)壓裝(zhuang)置(zhi)標準：JB/T6323-2002《減(jian)(jian)溫減(jian)(jian)壓裝(zhuang)置(zhi)》

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

　　給水(shui)調節閥標準(zhun)：GB/10869-2005《電站調節閥》

　　4、減(jian)(jian)溫減(jian)(jian)壓裝置(zhi)分類方法

　　A、按結構分類

　　1)、一體式減溫減壓裝置；（WY型）

　　2)、分體(ti)式減(jian)溫減(jian)壓裝置；（Y-W型）

　　3)、減溫(wen)裝(zhuang)置(zhi)（W型）；

　　4)、減壓裝置（Y型(xing)）；

　　B、按蒸(zheng)汽(qi)參數(shu)分類：

　　1)、中溫(wen)(wen)中壓(ya)減(jian)溫(wen)(wen)減(jian)壓(ya)裝置；（P1≤3.82MPa，溫(wen)(wen)度T1≤425℃）；

　　2)、次(ci)高壓減溫(wen)減壓裝置；（P1≤5.4MPa，溫(wen)度T1≤485℃）；

　　3)、高溫高壓(ya)減溫減壓(ya)裝(zhuang)置；（P1≤10MPa，溫度T1≤540℃）；

　　5、減溫減壓(ya)裝(zhuang)置主要性能指標

　　1)、進(jin)口蒸汽壓力P1和溫(wen)度T1

　　中溫中壓：P1≤3.82MPa，溫度T1≤425℃。

　　次高溫(wen)高壓(ya)：P1≤5.4MPa，溫(wen)度T1≤485℃。

　　高溫高壓：P1≤10MPa，溫度T1≤540℃。

　　2)、出口蒸汽流量(liang)Q

　　減溫(wen)減壓(ya)裝置出口(kou)流量Q的變化范(fan)圍為10%Q~120%Q，在此范(fan)圍內調節比(bi)較理想(xiang)。

　　若(ruo)有特殊(shu)要求，可與本公司(si)協(xie)商另定。

　　3)、出口蒸汽壓力(li)P2

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

　　4)、出(chu)口(kou)蒸汽(qi)溫度T2

　　出口蒸汽溫度T2的調節精(jing)度不低于2.5級。±2.5℃；

　　5)、噪音

　　裝(zhuang)置正常(chang)運行時(shi)，在(zai)減溫減壓閥下游一米(mi)，同時(shi)距管壁(bi)一米(mi)處(chu)測(ce)其噪音，噪音音級應

　　不(bu)大于85分貝。

　　6、減溫減壓裝置訂貨(huo)須知

　　訂合同時請(qing)提供：

　　1)、出(chu)口蒸(zheng)汽流量Q、進口蒸(zheng)汽壓力P1、溫度T1、出(chu)口蒸(zheng)汽壓力P2、溫度T2；

　　2)、減溫給水壓力Pb、溫度tb；

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

　　4)、控(kong)制類別(bie)：電動(dong)、氣動(dong)、液動(dong)；

　　選擇氣動閥時還必須提供：

　　1)、作用(yong)形式：氣(qi)開(kai)式或(huo)氣(qi)閉式；正作用(yong)或(huo)反作用(yong)；

　　2)、氣源壓力；

　　3)、其它(ta)附件說明：用(yong)戶(hu)如有特殊要求，應在(zai)商(shang)定后注明或另(ling)行(xing)簽訂技術協議。

　　注：1出(chu)口(kou)蒸(zheng)汽壓力P2應(ying)(ying)不(bu)低(di)于(yu)飽和溫(wen)(wen)度所(suo)對應(ying)(ying)的壓力值，或出(chu)口(kou)蒸(zheng)汽溫(wen)(wen)度T2應(ying)(ying)不(bu)低(di)于(yu)P2所(suo)對應(ying)(ying)的飽和溫(wen)(wen)度值；

　　2對減溫(wen)(wen)減壓一體式結構：減溫(wen)(wen)給(gei)水的壓力Pb≥0.6P1＋0.8MPa；若Pb值太低(di)，將無(wu)法噴入減溫(wen)(wen)減壓閥內減溫(wen)(wen)。

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

　　附表(biao)：基(ji)本訂貨要求(qiu)

　　注：不(bu)加注壓力(li)值為表壓

　　減(jian)溫減(jian)壓(ya)裝置的(de)供貨范圍為括號標志以內，主要有

　　1.減壓(ya)系統：減溫(wen)減壓(ya)閥(fa)或減壓(ya)閥(fa)、節流(liu)孔板等；

　　2.減溫系統(tong)：給水調節(jie)閥或(huo)可調噴(pen)嘴、截止閥、節(jie)流閥等；

　　3.安(an)全系統：安(an)全閥、止回閥等；

　　4.管(guan)(guan)路系統：蒸汽管(guan)(guan)道(dao)(dao)、混合管(guan)(guan)道(dao)(dao)、過渡管(guan)(guan)、減(jian)溫水管(guan)(guan)等；

　　5.配套附件：截止閥、雙金(jin)屬溫度(du)計及接管、壓力表及三通閥、彎道(dao)、接頭、法蘭、襯墊(dian)、