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1、減溫減壓裝置用途
減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)是(shi)用(yong)來(lai)(lai)調節蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)、溫(wen)度(du)的(de)(de)重要(yao)裝(zhuang)置(zhi)，在火力(li)(li)發電(dian)廠中(zhong)鍋(guo)爐(lu)產(chan)生(sheng)(sheng)(sheng)過(guo)熱(re)(re)(re)(re)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)，如果鍋(guo)爐(lu)不裝(zhuang)備(bei)(bei)減(jian)(jian)(jian)(jian)(jian)溫(wen)器(qi)(qi)，就無法將鍋(guo)爐(lu)出(chu)(chu)口(kou)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)溫(wen)度(du)控制(zhi)在需要(yao)范圍內，會使鍋(guo)爐(lu)汽(qi)(qi)(qi)(qi)(qi)輪機等設備(bei)(bei)因超溫(wen)損壞(huai)或造成重大事故。同(tong)時(shi)，在化工(gong)(gong)(gong)(gong)、輕(qing)工(gong)(gong)(gong)(gong)、醫藥(yao)、食(shi)品加(jia)(jia)工(gong)(gong)(gong)(gong)等一切使用(yong)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)的(de)(de)生(sheng)(sheng)(sheng)產(chan)工(gong)(gong)(gong)(gong)藝(yi)(yi)流程中(zhong)，過(guo)熱(re)(re)(re)(re)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)作為機械能量的(de)(de)產(chan)生(sheng)(sheng)(sheng)提供(gong)了(le)能源。而許多(duo)情況下，飽(bao)和蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)是(shi)更(geng)適(shi)合使用(yong)的(de)(de)，由于(yu)工(gong)(gong)(gong)(gong)藝(yi)(yi)及(ji)(ji)設備(bei)(bei)的(de)(de)原因，對壓(ya)(ya)(ya)(ya)(ya)力(li)(li)、溫(wen)度(du)的(de)(de)控制(zhi)也是(shi)必不可少的(de)(de)，通過(guo)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)可以得(de)到合適(shi)的(de)(de)動力(li)(li)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)。例(li)如：當(dang)(dang)換熱(re)(re)(re)(re)器(qi)(qi)用(yong)于(yu)制(zhi)程操作時(shi)，使用(yong)過(guo)熱(re)(re)(re)(re)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)由于(yu)低的(de)(de)傳熱(re)(re)(re)(re)系數而降低效率，使用(yong)飽(bao)和蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)更(geng)加(jia)(jia)適(shi)合。另外當(dang)(dang)高壓(ya)(ya)(ya)(ya)(ya)的(de)(de)干飽(bao)和蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)至低壓(ya)(ya)(ya)(ya)(ya)時(shi)，在下游出(chu)(chu)口(kou)會產(chan)生(sheng)(sheng)(sheng)過(guo)熱(re)(re)(re)(re)度(du)。這樣都需要(yao)將過(guo)熱(re)(re)(re)(re)的(de)(de)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)降溫(wen)至所需的(de)(de)接近飽(bao)和的(de)(de)溫(wen)度(du)，這就需要(yao)減(jian)(jian)(jian)(jian)(jian)溫(wen)器(qi)(qi)。在很多(duo)情況下需要(yao)對高壓(ya)(ya)(ya)(ya)(ya)過(guo)熱(re)(re)(re)(re)的(de)(de)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)同(tong)時(shi)進行(xing)減(jian)(jian)(jian)(jian)(jian)溫(wen)和減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)。減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)是(shi)節能環保產(chan)品。減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)配上相應的(de)(de)工(gong)(gong)(gong)(gong)業(ye)自動化儀(yi)表（即熱(re)(re)(re)(re)控柜），可對電(dian)站或工(gong)(gong)(gong)(gong)業(ye)鍋(guo)爐(lu)及(ji)(ji)熱(re)(re)(re)(re)電(dian)廠等處輸送(song)來(lai)(lai)的(de)(de)一次（新）蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)P1、溫(wen)度(du)T1進行(xing)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)，使其二次蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)P2、溫(wen)度(du)T2達到生(sheng)(sheng)(sheng)產(chan)工(gong)(gong)(gong)(gong)藝(yi)(yi)所需的(de)(de)要(yao)求。廣(guang)泛用(yong)于(yu)熱(re)(re)(re)(re)電(dian)廠、集中(zhong)供(gong)熱(re)(re)(re)(re)、食(shi)品工(gong)(gong)(gong)(gong)業(ye)、石化工(gong)(gong)(gong)(gong)業(ye)、紡織工(gong)(gong)(gong)(gong)業(ye)、橡膠工(gong)(gong)(gong)(gong)業(ye)、造紙(zhi)和紙(zhi)漿(jiang)工(gong)(gong)(gong)(gong)業(ye)、煙草工(gong)(gong)(gong)(gong)業(ye)、制(zhi)藥(yao)等其它很多(duo)行(xing)業(ye)。為了(le)滿(man)足不同(tong)設備(bei)(bei)工(gong)(gong)(gong)(gong)藝(yi)(yi)要(yao)求，我公司(si)提供(gong)不同(tong)類型(xing)的(de)(de)減(jian)(jian)(jian)(jian)(jian)溫(wen)減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)（減(jian)(jian)(jian)(jian)(jian)溫(wen)、減(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)）器(qi)(qi)，并實現全(quan)套智能化自動控制(zhi)或DCS系統聯網。
減(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)根據一次(ci)（新）蒸汽壓(ya)(ya)(ya)力P1、溫(wen)(wen)(wen)度T1、可分為高溫(wen)(wen)(wen)高壓(ya)(ya)(ya)減(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)、次(ci)高壓(ya)(ya)(ya)減(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)、中溫(wen)(wen)(wen)中壓(ya)(ya)(ya)減(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)；減(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)根據使用情況又可分為減(jian)(jian)(jian)溫(wen)(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)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)，
減(jian)溫(wen)(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)置(zhi)一(yi)般根據一(yi)次蒸汽(qi)（新蒸汽(qi)）和二次蒸汽(qi)（即減(jian)溫(wen)(wen)(wen)(wen)減(jian)壓(ya)(ya)后的(de)(de)蒸汽(qi)）的(de)(de)參(can)數及(ji)(ji)用(yong)(yong)(yong)量進(jin)(jin)行(xing)選擇(ze)，經常運(yun)行(xing)的(de)(de)減(jian)溫(wen)(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)置(zhi)一(yi)般設置(zhi)兩套(tao)，其中一(yi)套(tao)作(zuo)為備(bei)(bei)用(yong)(yong)(yong)；不(bu)(bu)經常運(yun)行(xing)的(de)(de)減(jian)溫(wen)(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)置(zhi)一(yi)般不(bu)(bu)考慮備(bei)(bei)用(yong)(yong)(yong)；備(bei)(bei)用(yong)(yong)(yong)的(de)(de)減(jian)溫(wen)(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)置(zhi)應處(chu)于熱備(bei)(bei)用(yong)(yong)(yong)狀態(tai)。設計計算時(shi)根據二次蒸汽(qi)的(de)(de)量確(que)定進(jin)(jin)入減(jian)溫(wen)(wen)(wen)(wen)減(jian)壓(ya)(ya)裝(zhuang)置(zhi)的(de)(de)一(yi)次蒸汽(qi)和減(jian)溫(wen)(wen)(wen)(wen)水(shui)量，減(jian)溫(wen)(wen)(wen)(wen)水(shui)壓(ya)(ya)力、溫(wen)(wen)(wen)(wen)度應滿足噴水(shui)及(ji)(ji)霧化的(de)(de)要求，水(shui)質(zhi)不(bu)(bu)低于蒸汽(qi)品質(zhi)。
2、減(jian)溫(wen)減(jian)壓裝置型號(hao)編制
裝置的型(xing)號表示方(fang)法如下：
注1:對(dui)于減溫裝(zhuang)置(zhi)和(he)減壓(ya)裝(zhuang)置(zhi)，其(qi)代(dai)號則分別為(wei)W或Y表示。
注2:型號有關(guan)的壓力值，均保留一位小數。
例：WY80-3.82/450-0.98/260-8.0/104表示出(chu)口(kou)蒸(zheng)氣流量(liang)為(wei)80t/h；進(jin)口(kou)蒸(zheng)氣壓(ya)力3.82MPa，溫(wen)度(du)450℃；出(chu)口(kou)蒸(zheng)汽(qi)壓(ya)力為(wei)0.98MPa，溫(wen)度(du)260℃；溫(wen)度(du)給(gei)水(shui)壓(ya)力為(wei)8.0MPa，給(gei)水(shui)溫(wen)度(du)為(wei)104℃的減溫(wen)減壓(ya)裝置(zhi)。
3、減溫減壓裝置(zhi)執行標準
減溫(wen)減壓裝置標準：JB/T6323-2002《減溫(wen)減壓裝置》
減(jian)溫減(jian)壓閥標準：GB/10868-2005《電(dian)站(zhan)減(jian)溫減(jian)壓閥》
給水調(diao)節(jie)閥標(biao)準：GB/10869-2005《電站調(diao)節(jie)閥》
4、減(jian)溫減(jian)壓(ya)裝置分類方法
A、按結構分類
1)、一體式減(jian)溫減(jian)壓裝置；（WY型）
2)、分體式減溫減壓裝置(zhi)；（Y-W型(xing)）
3)、減溫裝置（W型）；
4)、減壓裝置（Y型）；
B、按蒸(zheng)汽(qi)參數分類(lei)：
1)、中(zhong)溫中(zhong)壓(ya)減溫減壓(ya)裝置；（P1≤3.82MPa，溫度(du)T1≤425℃）；
2)、次高壓(ya)減(jian)(jian)溫(wen)減(jian)(jian)壓(ya)裝(zhuang)置；（P1≤5.4MPa，溫(wen)度T1≤485℃）；
3)、高溫高壓減溫減壓裝置(zhi)；（P1≤10MPa，溫度(du)T1≤540℃）；
5、減溫減壓裝置主要性能指標
1)、進口蒸(zheng)汽(qi)壓力(li)P1和(he)溫度T1
中溫(wen)中壓：P1≤3.82MPa，溫(wen)度(du)T1≤425℃。
次(ci)高(gao)(gao)溫高(gao)(gao)壓(ya)：P1≤5.4MPa，溫度T1≤485℃。
高溫(wen)高壓：P1≤10MPa，溫(wen)度T1≤540℃。
2)、出(chu)口蒸汽流量(liang)Q
減溫減壓裝置出口(kou)流量Q的(de)變化范(fan)(fan)圍為(wei)10%Q~120%Q，在此范(fan)(fan)圍內(nei)調節比較理想。
若有特(te)殊要求(qiu)，可與本公司協商另定。
3)、出口蒸汽壓力P2
出口蒸(zheng)汽壓力(li)P2的調節(jie)精度不(bu)低于(yu)2.5級。誤差不(bu)大于(yu)±0.04MPa；
4)、出口蒸汽溫(wen)度T2
出(chu)口(kou)蒸汽溫度T2的調節精度不低于(yu)2.5級。±2.5℃；
5)、噪音
裝(zhuang)置(zhi)正常運(yun)行時，在減(jian)(jian)溫(wen)減(jian)(jian)壓閥下游一米，同時距管壁一米處測其噪音，噪音音級應(ying)
不大于85分貝(bei)。
6、減溫(wen)減壓裝(zhuang)置訂貨須知(zhi)
訂合同(tong)時請提供：
1)、出口蒸(zheng)汽(qi)(qi)流量(liang)Q、進(jin)口蒸(zheng)汽(qi)(qi)壓力P1、溫(wen)度(du)T1、出口蒸(zheng)汽(qi)(qi)壓力P2、溫(wen)度(du)T2；
2)、減溫給水(shui)壓力Pb、溫度(du)tb；
3)、注明控(kong)制方式；（儀(yi)表(biao)盤控(kong)制，PLC、DCS控(kong)制，DCS監視）
4)、控制類別：電(dian)動(dong)、氣動(dong)、液動(dong)；
選(xuan)擇氣動閥時(shi)還必須提供：
1)、作用形(xing)式(shi)：氣開式(shi)或氣閉式(shi)；正作用或反作用；
2)、氣源壓力；
3)、其(qi)它(ta)附件(jian)說明(ming)(ming)：用戶如有(you)特殊要求(qiu)，應在商(shang)定后注明(ming)(ming)或另行簽訂技術協(xie)議。
注：1出口蒸汽壓(ya)力(li)P2應不(bu)低于(yu)飽和溫度(du)所對應的壓(ya)力(li)值，或出口蒸汽溫度(du)T2應不(bu)低于(yu)P2所對應的飽和溫度(du)值；
2對(dui)減(jian)溫(wen)(wen)減(jian)壓一體式結構：減(jian)溫(wen)(wen)給水的壓力Pb≥0.6P1＋0.8MPa；若Pb值太(tai)低，將無法噴入減(jian)溫(wen)(wen)減(jian)壓閥內減(jian)溫(wen)(wen)。
（3）對減溫(wen)減壓分(fen)體式結構：減溫(wen)給水(shui)的壓力Pb≥P2＋0.6MPa；
附表：基本訂貨(huo)要(yao)求
注：不加注壓力值為表壓
減溫減壓裝置的供貨范圍為括號標(biao)志以內，主(zhu)要有
1.減(jian)壓系統：減(jian)溫減(jian)壓閥或(huo)減(jian)壓閥、節流孔板等；
2.減溫系(xi)統：給水調節閥或可調噴嘴、截止(zhi)閥、節流閥等(deng)；
3.安全系統：安全閥、止回閥等；
4.管(guan)(guan)路系(xi)統：蒸汽管(guan)(guan)道(dao)(dao)、混合管(guan)(guan)道(dao)(dao)、過渡管(guan)(guan)、減溫水管(guan)(guan)等；
5.配套(tao)附件：截止閥、雙金屬溫度計及(ji)接管、壓力表(biao)及(ji)三通閥、彎(wan)道、接頭、法蘭、襯(chen)墊、
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