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　　1、減(jian)溫減(jian)壓裝置用(yong)途

　　減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)(zhi)是用(yong)來(lai)調節蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)力(li)、溫(wen)(wen)(wen)度(du)(du)的(de)(de)(de)(de)(de)重要裝(zhuang)(zhuang)置(zhi)(zhi)，在火力(li)發電廠(chang)中鍋(guo)爐產(chan)生(sheng)過(guo)(guo)熱(re)(re)(re)(re)(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)，如(ru)果鍋(guo)爐不(bu)(bu)裝(zhuang)(zhuang)備(bei)(bei)(bei)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器(qi)，就無法(fa)將鍋(guo)爐出口蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)溫(wen)(wen)(wen)度(du)(du)控制(zhi)(zhi)(zhi)在需(xu)要范圍內(nei)，會使鍋(guo)爐汽(qi)(qi)(qi)(qi)輪機等設(she)(she)備(bei)(bei)(bei)因超溫(wen)(wen)(wen)損壞或造成重大事故(gu)。同(tong)時(shi)(shi)，在化(hua)(hua)(hua)工(gong)(gong)(gong)、輕工(gong)(gong)(gong)、醫藥(yao)(yao)、食品加工(gong)(gong)(gong)等一(yi)切使用(yong)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)的(de)(de)(de)(de)(de)生(sheng)產(chan)工(gong)(gong)(gong)藝(yi)流程中，過(guo)(guo)熱(re)(re)(re)(re)(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)作(zuo)為(wei)機械能(neng)量的(de)(de)(de)(de)(de)產(chan)生(sheng)提供了(le)能(neng)源(yuan)。而許多情況下，飽(bao)(bao)和(he)(he)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)是更適合(he)(he)使用(yong)的(de)(de)(de)(de)(de)，由(you)(you)于(yu)(yu)(yu)工(gong)(gong)(gong)藝(yi)及設(she)(she)備(bei)(bei)(bei)的(de)(de)(de)(de)(de)原因，對(dui)壓(ya)(ya)(ya)(ya)力(li)、溫(wen)(wen)(wen)度(du)(du)的(de)(de)(de)(de)(de)控制(zhi)(zhi)(zhi)也是必不(bu)(bu)可(ke)(ke)少的(de)(de)(de)(de)(de)，通(tong)過(guo)(guo)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)(zhi)可(ke)(ke)以得到合(he)(he)適的(de)(de)(de)(de)(de)動力(li)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)。例如(ru)：當換熱(re)(re)(re)(re)(re)器(qi)用(yong)于(yu)(yu)(yu)制(zhi)(zhi)(zhi)程操作(zuo)時(shi)(shi)，使用(yong)過(guo)(guo)熱(re)(re)(re)(re)(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)由(you)(you)于(yu)(yu)(yu)低(di)的(de)(de)(de)(de)(de)傳熱(re)(re)(re)(re)(re)系數而降低(di)效率(lv)，使用(yong)飽(bao)(bao)和(he)(he)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)更加適合(he)(he)。另外當高壓(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)干飽(bao)(bao)和(he)(he)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)至低(di)壓(ya)(ya)(ya)(ya)時(shi)(shi)，在下游出口會產(chan)生(sheng)過(guo)(guo)熱(re)(re)(re)(re)(re)度(du)(du)。這(zhe)樣都(dou)需(xu)要將過(guo)(guo)熱(re)(re)(re)(re)(re)的(de)(de)(de)(de)(de)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)降溫(wen)(wen)(wen)至所需(xu)的(de)(de)(de)(de)(de)接近飽(bao)(bao)和(he)(he)的(de)(de)(de)(de)(de)溫(wen)(wen)(wen)度(du)(du)，這(zhe)就需(xu)要減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器(qi)。在很多情況下需(xu)要對(dui)高壓(ya)(ya)(ya)(ya)過(guo)(guo)熱(re)(re)(re)(re)(re)的(de)(de)(de)(de)(de)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)同(tong)時(shi)(shi)進行(xing)減(jian)(jian)(jian)(jian)溫(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)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)(zhi)是節能(neng)環保產(chan)品。減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)(zhi)配上相應的(de)(de)(de)(de)(de)工(gong)(gong)(gong)業自動化(hua)(hua)(hua)儀表（即熱(re)(re)(re)(re)(re)控柜），可(ke)(ke)對(dui)電站(zhan)或工(gong)(gong)(gong)業鍋(guo)爐及熱(re)(re)(re)(re)(re)電廠(chang)等處輸送來(lai)的(de)(de)(de)(de)(de)一(yi)次(ci)(ci)（新）蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)力(li)P1、溫(wen)(wen)(wen)度(du)(du)T1進行(xing)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)，使其二次(ci)(ci)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)力(li)P2、溫(wen)(wen)(wen)度(du)(du)T2達到生(sheng)產(chan)工(gong)(gong)(gong)藝(yi)所需(xu)的(de)(de)(de)(de)(de)要求。廣泛用(yong)于(yu)(yu)(yu)熱(re)(re)(re)(re)(re)電廠(chang)、集中供熱(re)(re)(re)(re)(re)、食品工(gong)(gong)(gong)業、石化(hua)(hua)(hua)工(gong)(gong)(gong)業、紡(fang)織工(gong)(gong)(gong)業、橡(xiang)膠工(gong)(gong)(gong)業、造紙和(he)(he)紙漿工(gong)(gong)(gong)業、煙(yan)草(cao)工(gong)(gong)(gong)業、制(zhi)(zhi)(zhi)藥(yao)(yao)等其它很多行(xing)業。為(wei)了(le)滿足不(bu)(bu)同(tong)設(she)(she)備(bei)(bei)(bei)工(gong)(gong)(gong)藝(yi)要求，我公(gong)司提供不(bu)(bu)同(tong)類型的(de)(de)(de)(de)(de)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)（減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)、減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)）器(qi)，并實現全套智(zhi)能(neng)化(hua)(hua)(hua)自動控制(zhi)(zhi)(zhi)或DCS系統聯網。

　　減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)根(gen)據一次（新）蒸汽壓(ya)(ya)力P1、溫(wen)(wen)(wen)(wen)度T1、可分(fen)為(wei)高(gao)溫(wen)(wen)(wen)(wen)高(gao)壓(ya)(ya)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)、次高(gao)壓(ya)(ya)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)、中溫(wen)(wen)(wen)(wen)中壓(ya)(ya)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)；減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)根(gen)據使(shi)用情況(kuang)又可分(fen)為(wei)減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)、減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)、減(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)，

　　減(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置一般根據一次(ci)蒸汽(qi)（新蒸汽(qi)）和(he)(he)二次(ci)蒸汽(qi)（即減(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)壓(ya)(ya)后的蒸汽(qi)）的參數及(ji)用(yong)量進(jin)行(xing)選擇，經(jing)常運(yun)行(xing)的減(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置一般設(she)置兩套，其中一套作為備(bei)用(yong)；不(bu)經(jing)常運(yun)行(xing)的減(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置一般不(bu)考慮備(bei)用(yong)；備(bei)用(yong)的減(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置應處于(yu)熱備(bei)用(yong)狀態。設(she)計計算時(shi)根據二次(ci)蒸汽(qi)的量確定(ding)進(jin)入減(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)壓(ya)(ya)裝(zhuang)置的一次(ci)蒸汽(qi)和(he)(he)減(jian)(jian)(jian)溫(wen)水(shui)量，減(jian)(jian)(jian)溫(wen)水(shui)壓(ya)(ya)力、溫(wen)度應滿足噴水(shui)及(ji)霧化的要求，水(shui)質(zhi)不(bu)低于(yu)蒸汽(qi)品(pin)質(zhi)。

　　2、減溫(wen)減壓裝置型(xing)號編制

　　裝置的型號表示方法如下：

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

　　注(zhu)2:型(xing)號有關的壓(ya)力(li)值，均保留(liu)一(yi)位小數。

　　例：WY80-3.82/450-0.98/260-8.0/104表示出(chu)口蒸氣流量(liang)為80t/h；進口蒸氣壓(ya)力3.82MPa，溫度(du)(du)450℃；出(chu)口蒸汽壓(ya)力為0.98MPa，溫度(du)(du)260℃；溫度(du)(du)給(gei)水壓(ya)力為8.0MPa，給(gei)水溫度(du)(du)為104℃的減(jian)溫減(jian)壓(ya)裝(zhuang)置(zhi)。

　　3、減(jian)溫(wen)減(jian)壓裝置(zhi)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(biao)準：GB/10868-2005《電站減(jian)溫減(jian)壓閥(fa)》

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

　　4、減溫減壓裝置分類方法

　　A、按結構分類

　　1)、一(yi)體式減(jian)溫減(jian)壓裝置(zhi)；（WY型(xing)）

　　2)、分體式減溫減壓裝(zhuang)置；（Y-W型）

　　3)、減溫裝(zhuang)置（W型）；

　　4)、減壓裝置（Y型）；

　　B、按蒸汽(qi)參數分(fen)類：

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

　　2)、次高壓(ya)減(jian)溫減(jian)壓(ya)裝置；（P1≤5.4MPa，溫度T1≤485℃）；

　　3)、高(gao)溫高(gao)壓減溫減壓裝置；（P1≤10MPa，溫度(du)T1≤540℃）；

　　5、減溫減壓裝置主要性能指標

　　1)、進口蒸汽壓(ya)力P1和溫度(du)T1

　　中溫中壓：P1≤3.82MPa，溫度(du)T1≤425℃。

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

　　高溫(wen)高壓：P1≤10MPa，溫(wen)度T1≤540℃。

　　2)、出口蒸汽流量(liang)Q

　　減溫減壓裝置出口流(liu)量Q的(de)變化范(fan)圍為(wei)10%Q~120%Q，在此范(fan)圍內調節比較理(li)想。

　　若(ruo)有特殊(shu)要(yao)求(qiu)，可(ke)與本公司(si)協商另(ling)定。

　　3)、出口(kou)蒸汽壓(ya)力P2

　　出口(kou)蒸汽壓(ya)力P2的(de)調節精度(du)不低于(yu)2.5級。誤差(cha)不大于(yu)±0.04MPa；

　　4)、出口蒸汽溫度(du)T2

　　出口蒸(zheng)汽溫度T2的(de)調節精(jing)度不低于2.5級。±2.5℃；

　　5)、噪音

　　裝(zhuang)置(zhi)正(zheng)常運行時(shi)，在減溫減壓閥下游一(yi)米，同時(shi)距管壁一(yi)米處測其噪音(yin)，噪音(yin)音(yin)級應

　　不(bu)大于85分貝。

　　6、減溫減壓裝置訂貨須知(zhi)

　　訂合同時(shi)請(qing)提供：

　　1)、出(chu)口(kou)蒸汽(qi)(qi)流量Q、進口(kou)蒸汽(qi)(qi)壓力(li)P1、溫(wen)度T1、出(chu)口(kou)蒸汽(qi)(qi)壓力(li)P2、溫(wen)度T2；

　　2)、減溫(wen)給水壓力(li)Pb、溫(wen)度tb；

　　3)、注明控制方式；（儀表盤(pan)控制，PLC、DCS控制，DCS監視）

　　4)、控制類(lei)別：電(dian)動(dong)、氣動(dong)、液(ye)動(dong)；

　　選擇(ze)氣動(dong)閥時(shi)還必須提供：

　　1)、作(zuo)用形式：氣開(kai)式或氣閉式；正作(zuo)用或反作(zuo)用；

　　2)、氣源壓力；

　　3)、其它附件說明：用戶如(ru)有特殊要求，應在商(shang)定后注明或另行簽訂技術協(xie)議。

　　注：1出(chu)口蒸(zheng)汽壓(ya)力(li)P2應(ying)不低(di)于飽和溫度所對應(ying)的壓(ya)力(li)值(zhi)，或(huo)出(chu)口蒸(zheng)汽溫度T2應(ying)不低(di)于P2所對應(ying)的飽和溫度值(zhi)；

　　2對減(jian)溫減(jian)壓一(yi)體式結構：減(jian)溫給水的壓力Pb≥0.6P1＋0.8MPa；若Pb值太低(di)，將無法噴入減(jian)溫減(jian)壓閥內減(jian)溫。

　　（3）對(dui)減(jian)溫減(jian)壓分體(ti)式結構(gou)：減(jian)溫給水(shui)的壓力Pb≥P2＋0.6MPa；

　　附表(biao)：基本訂貨要(yao)求

　　注：不加注壓力值為表壓

　　減溫(wen)減壓裝置的供貨范(fan)圍為括號標志以內，主要(yao)有

　　1.減(jian)壓(ya)(ya)系統：減(jian)溫減(jian)壓(ya)(ya)閥或(huo)減(jian)壓(ya)(ya)閥、節流孔板等；

　　2.減溫系統：給水調節(jie)閥(fa)或可調噴嘴、截止閥(fa)、節(jie)流閥(fa)等；

　　3.安(an)全系統：安(an)全閥、止回閥等(deng)；

　　4.管(guan)(guan)(guan)路系統：蒸汽管(guan)(guan)(guan)道、混(hun)合管(guan)(guan)(guan)道、過渡管(guan)(guan)(guan)、減溫水管(guan)(guan)(guan)等；

　　5.配套附件：截止閥(fa)、雙金屬溫度計及接管、壓力(li)表(biao)及三通閥(fa)、彎道、接頭、法蘭、襯(chen)墊、