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　　1、減溫減壓裝置用途

　　減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)置(zhi)(zhi)是用(yong)(yong)(yong)來調節蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)壓(ya)力、溫(wen)(wen)(wen)度(du)的(de)(de)重要(yao)裝(zhuang)置(zhi)(zhi)，在火(huo)力發電(dian)(dian)廠中鍋爐(lu)(lu)產(chan)(chan)生(sheng)(sheng)過熱(re)(re)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)，如果鍋爐(lu)(lu)不(bu)(bu)(bu)裝(zhuang)備減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器，就無法將(jiang)鍋爐(lu)(lu)出口(kou)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)溫(wen)(wen)(wen)度(du)控(kong)制(zhi)在需(xu)要(yao)范(fan)圍內(nei)，會使鍋爐(lu)(lu)汽(qi)(qi)輪機等(deng)設備因(yin)(yin)超溫(wen)(wen)(wen)損壞或造(zao)(zao)成重大事故(gu)。同(tong)時(shi)(shi)(shi)，在化(hua)(hua)工(gong)(gong)(gong)(gong)(gong)、輕(qing)工(gong)(gong)(gong)(gong)(gong)、醫(yi)藥、食品(pin)加(jia)工(gong)(gong)(gong)(gong)(gong)等(deng)一切使用(yong)(yong)(yong)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)的(de)(de)生(sheng)(sheng)產(chan)(chan)工(gong)(gong)(gong)(gong)(gong)藝(yi)流程中，過熱(re)(re)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)作(zuo)為機械能(neng)(neng)量(liang)的(de)(de)產(chan)(chan)生(sheng)(sheng)提供(gong)了(le)能(neng)(neng)源(yuan)。而許多(duo)(duo)情(qing)況下(xia)，飽和(he)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)是更適合使用(yong)(yong)(yong)的(de)(de)，由于工(gong)(gong)(gong)(gong)(gong)藝(yi)及(ji)設備的(de)(de)原因(yin)(yin)，對壓(ya)力、溫(wen)(wen)(wen)度(du)的(de)(de)控(kong)制(zhi)也是必不(bu)(bu)(bu)可少的(de)(de)，通過減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)置(zhi)(zhi)可以得到合適的(de)(de)動(dong)力蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)。例如：當換熱(re)(re)器用(yong)(yong)(yong)于制(zhi)程操作(zuo)時(shi)(shi)(shi)，使用(yong)(yong)(yong)過熱(re)(re)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)由于低的(de)(de)傳熱(re)(re)系(xi)數而降低效(xiao)率(lv)，使用(yong)(yong)(yong)飽和(he)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)更加(jia)適合。另外當高壓(ya)的(de)(de)干飽和(he)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)至低壓(ya)時(shi)(shi)(shi)，在下(xia)游出口(kou)會產(chan)(chan)生(sheng)(sheng)過熱(re)(re)度(du)。這(zhe)樣都(dou)需(xu)要(yao)將(jiang)過熱(re)(re)的(de)(de)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)降溫(wen)(wen)(wen)至所需(xu)的(de)(de)接近飽和(he)的(de)(de)溫(wen)(wen)(wen)度(du)，這(zhe)就需(xu)要(yao)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器。在很多(duo)(duo)情(qing)況下(xia)需(xu)要(yao)對高壓(ya)過熱(re)(re)的(de)(de)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)同(tong)時(shi)(shi)(shi)進行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)和(he)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)置(zhi)(zhi)是節能(neng)(neng)環保產(chan)(chan)品(pin)。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)置(zhi)(zhi)配上相應的(de)(de)工(gong)(gong)(gong)(gong)(gong)業自(zi)動(dong)化(hua)(hua)儀表（即熱(re)(re)控(kong)柜），可對電(dian)(dian)站或工(gong)(gong)(gong)(gong)(gong)業鍋爐(lu)(lu)及(ji)熱(re)(re)電(dian)(dian)廠等(deng)處輸(shu)送來的(de)(de)一次(ci)（新(xin)）蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)壓(ya)力P1、溫(wen)(wen)(wen)度(du)T1進行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)，使其二(er)次(ci)蒸(zheng)(zheng)(zheng)(zheng)汽(qi)(qi)壓(ya)力P2、溫(wen)(wen)(wen)度(du)T2達到生(sheng)(sheng)產(chan)(chan)工(gong)(gong)(gong)(gong)(gong)藝(yi)所需(xu)的(de)(de)要(yao)求(qiu)。廣泛用(yong)(yong)(yong)于熱(re)(re)電(dian)(dian)廠、集中供(gong)熱(re)(re)、食品(pin)工(gong)(gong)(gong)(gong)(gong)業、石化(hua)(hua)工(gong)(gong)(gong)(gong)(gong)業、紡織工(gong)(gong)(gong)(gong)(gong)業、橡(xiang)膠工(gong)(gong)(gong)(gong)(gong)業、造(zao)(zao)紙和(he)紙漿(jiang)工(gong)(gong)(gong)(gong)(gong)業、煙草工(gong)(gong)(gong)(gong)(gong)業、制(zhi)藥等(deng)其它(ta)很多(duo)(duo)行(xing)業。為了(le)滿(man)足不(bu)(bu)(bu)同(tong)設備工(gong)(gong)(gong)(gong)(gong)藝(yi)要(yao)求(qiu)，我公司提供(gong)不(bu)(bu)(bu)同(tong)類型的(de)(de)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)（減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)、減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)）器，并實現全套智能(neng)(neng)化(hua)(hua)自(zi)動(dong)控(kong)制(zhi)或DCS系(xi)統聯網(wang)。

　　減(jian)(jian)溫減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)根據(ju)一(yi)次（新）蒸汽壓(ya)(ya)(ya)力P1、溫度T1、可分(fen)為(wei)高(gao)(gao)溫高(gao)(gao)壓(ya)(ya)(ya)減(jian)(jian)溫減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)、次高(gao)(gao)壓(ya)(ya)(ya)減(jian)(jian)溫減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)、中(zhong)溫中(zhong)壓(ya)(ya)(ya)減(jian)(jian)溫減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)；減(jian)(jian)溫減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)根據(ju)使(shi)用情況又可分(fen)為(wei)減(jian)(jian)溫裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)、減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)、減(jian)(jian)溫減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)(zhi)，

　　減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)一般根(gen)據一次(ci)蒸(zheng)(zheng)(zheng)汽（新蒸(zheng)(zheng)(zheng)汽）和二次(ci)蒸(zheng)(zheng)(zheng)汽（即減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)后(hou)的(de)(de)蒸(zheng)(zheng)(zheng)汽）的(de)(de)參數(shu)及用(yong)量(liang)進行選擇，經常運行的(de)(de)減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)一般設置(zhi)(zhi)兩套，其中一套作為備(bei)(bei)用(yong)；不(bu)(bu)經常運行的(de)(de)減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)一般不(bu)(bu)考慮備(bei)(bei)用(yong)；備(bei)(bei)用(yong)的(de)(de)減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)應處于熱備(bei)(bei)用(yong)狀態。設計計算時根(gen)據二次(ci)蒸(zheng)(zheng)(zheng)汽的(de)(de)量(liang)確定進入減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)的(de)(de)一次(ci)蒸(zheng)(zheng)(zheng)汽和減(jian)(jian)溫(wen)(wen)水量(liang)，減(jian)(jian)溫(wen)(wen)水壓(ya)力、溫(wen)(wen)度應滿(man)足(zu)噴水及霧化的(de)(de)要求(qiu)，水質不(bu)(bu)低于蒸(zheng)(zheng)(zheng)汽品質。

　　2、減溫減壓裝置型號編(bian)制(zhi)

　　裝置的型號表示方法如下：

　　注(zhu)1:對于減溫(wen)裝置和減壓(ya)裝置，其代號(hao)則分別為W或Y表示。

　　注2:型(xing)號(hao)有關(guan)的壓力值(zhi)，均(jun)保留一位小(xiao)數。

　　例：WY80-3.82/450-0.98/260-8.0/104表示(shi)出口(kou)蒸(zheng)氣流量為80t/h；進口(kou)蒸(zheng)氣壓(ya)力3.82MPa，溫(wen)(wen)度(du)450℃；出口(kou)蒸(zheng)汽壓(ya)力為0.98MPa，溫(wen)(wen)度(du)260℃；溫(wen)(wen)度(du)給(gei)(gei)水(shui)壓(ya)力為8.0MPa，給(gei)(gei)水(shui)溫(wen)(wen)度(du)為104℃的減溫(wen)(wen)減壓(ya)裝置。

　　3、減溫減壓裝置執行(xing)標準

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

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

　　給(gei)水調(diao)節閥(fa)標準：GB/10869-2005《電站調(diao)節閥(fa)》

　　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(ti)式減溫減壓(ya)裝置(zhi)；（WY型(xing)）

　　2)、分體式減(jian)溫減(jian)壓裝置(zhi)；（Y-W型）

　　3)、減溫裝(zhuang)置（W型）；

　　4)、減(jian)壓裝置(zhi)（Y型）；

　　B、按蒸(zheng)汽參數(shu)分類(lei)：

　　1)、中溫(wen)(wen)中壓減溫(wen)(wen)減壓裝(zhuang)置；（P1≤3.82MPa，溫(wen)(wen)度T1≤425℃）；

　　2)、次高(gao)壓減溫(wen)減壓裝(zhuang)置；（P1≤5.4MPa，溫(wen)度T1≤485℃）；

　　3)、高溫(wen)高壓減(jian)溫(wen)減(jian)壓裝置(zhi)；（P1≤10MPa，溫(wen)度T1≤540℃）；

　　5、減溫減壓裝置主要性能指(zhi)標

　　1)、進口蒸汽壓(ya)力(li)P1和溫(wen)度T1

　　中(zhong)溫(wen)中(zhong)壓：P1≤3.82MPa，溫(wen)度(du)T1≤425℃。

　　次(ci)高溫高壓：P1≤5.4MPa，溫度T1≤485℃。

　　高溫高壓：P1≤10MPa，溫度T1≤540℃。

　　2)、出口蒸汽流量Q

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

　　若有特殊要求，可(ke)與(yu)本公司(si)協商(shang)另(ling)定(ding)。

　　3)、出口(kou)蒸汽壓力P2

　　出口(kou)蒸汽壓力P2的調節精度(du)不(bu)低于(yu)(yu)2.5級。誤差(cha)不(bu)大于(yu)(yu)±0.04MPa；

　　4)、出(chu)口蒸汽溫度T2

　　出口(kou)蒸(zheng)汽溫(wen)度(du)T2的調節精(jing)度(du)不低于2.5級。±2.5℃；

　　5)、噪音

　　裝置正常運行時(shi)，在(zai)減溫減壓閥(fa)下游一米，同時(shi)距管壁一米處測(ce)其噪(zao)音，噪(zao)音音級應

　　不大(da)于(yu)85分貝。

　　6、減溫(wen)減壓裝(zhuang)置訂貨須知

　　訂合(he)同時請(qing)提(ti)供(gong)：

　　1)、出口(kou)蒸(zheng)(zheng)汽(qi)流量Q、進口(kou)蒸(zheng)(zheng)汽(qi)壓力P1、溫度T1、出口(kou)蒸(zheng)(zheng)汽(qi)壓力P2、溫度T2；

　　2)、減(jian)溫(wen)(wen)給水(shui)壓力Pb、溫(wen)(wen)度tb；

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

　　4)、控制(zhi)類(lei)別：電動、氣動、液(ye)動；

　　選擇氣動(dong)閥時還必(bi)須(xu)提供(gong)：

　　1)、作用形式(shi)：氣開式(shi)或(huo)氣閉式(shi)；正作用或(huo)反作用；

　　2)、氣(qi)源(yuan)壓力；

　　3)、其它附件說(shuo)明：用(yong)戶如有特殊要求，應在商定后(hou)注明或另(ling)行簽訂技術協議。

　　注：1出(chu)口蒸汽(qi)壓力(li)P2應(ying)(ying)不低(di)于飽和溫(wen)度所(suo)對(dui)(dui)應(ying)(ying)的壓力(li)值，或出(chu)口蒸汽(qi)溫(wen)度T2應(ying)(ying)不低(di)于P2所(suo)對(dui)(dui)應(ying)(ying)的飽和溫(wen)度值；

　　2對減(jian)(jian)溫減(jian)(jian)壓(ya)一體式(shi)結構：減(jian)(jian)溫給水的壓(ya)力(li)Pb≥0.6P1＋0.8MPa；若(ruo)Pb值太低(di)，將(jiang)無法噴入減(jian)(jian)溫減(jian)(jian)壓(ya)閥內(nei)減(jian)(jian)溫。

　　（3）對減溫減壓分體式(shi)結構：減溫給(gei)水的壓力Pb≥P2＋0.6MPa；

　　附表：基本訂貨要(yao)求

　　注：不加注壓力值為表壓

　　減溫減壓(ya)裝(zhuang)置的供貨范圍為括號(hao)標志(zhi)以內，主要有

　　1.減壓(ya)系統：減溫減壓(ya)閥或減壓(ya)閥、節流孔板等；

　　2.減溫系統：給水調節閥或可(ke)調噴嘴、截止閥、節流(liu)閥等；

　　3.安全系統：安全閥(fa)、止回閥(fa)等(deng)；

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

　　5.配套附件(jian)：截止(zhi)閥、雙(shuang)金屬溫度計及接管、壓力表及三通閥、彎道、接頭、法蘭(lan)、襯(chen)墊、