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　　1、減溫減壓裝置(zhi)用途

　　減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)(zhi)是(shi)用(yong)(yong)來調節(jie)蒸汽(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)力(li)(li)(li)、溫(wen)(wen)(wen)(wen)(wen)(wen)度的(de)(de)重(zhong)(zhong)要(yao)裝(zhuang)(zhuang)置(zhi)(zhi)，在火力(li)(li)(li)發電(dian)廠(chang)(chang)(chang)中鍋(guo)(guo)爐(lu)產(chan)生(sheng)(sheng)過熱(re)(re)蒸汽(qi)(qi)(qi)(qi)(qi)，如果鍋(guo)(guo)爐(lu)不裝(zhuang)(zhuang)備(bei)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)器，就無法將(jiang)鍋(guo)(guo)爐(lu)出(chu)口(kou)蒸汽(qi)(qi)(qi)(qi)(qi)溫(wen)(wen)(wen)(wen)(wen)(wen)度控(kong)(kong)制在需(xu)(xu)(xu)要(yao)范圍(wei)內，會使鍋(guo)(guo)爐(lu)汽(qi)(qi)(qi)(qi)(qi)輪機等設備(bei)因(yin)超(chao)溫(wen)(wen)(wen)(wen)(wen)(wen)損壞或造成重(zhong)(zhong)大事故(gu)。同(tong)時(shi)(shi)，在化(hua)(hua)工(gong)(gong)(gong)(gong)、輕工(gong)(gong)(gong)(gong)、醫藥、食品加(jia)工(gong)(gong)(gong)(gong)等一(yi)(yi)切使用(yong)(yong)蒸汽(qi)(qi)(qi)(qi)(qi)的(de)(de)生(sheng)(sheng)產(chan)工(gong)(gong)(gong)(gong)藝(yi)流(liu)程(cheng)中，過熱(re)(re)蒸汽(qi)(qi)(qi)(qi)(qi)作(zuo)為(wei)機械(xie)能量的(de)(de)產(chan)生(sheng)(sheng)提供了能源(yuan)。而(er)許多(duo)情況下(xia)，飽和(he)蒸汽(qi)(qi)(qi)(qi)(qi)是(shi)更適合(he)(he)使用(yong)(yong)的(de)(de)，由(you)于(yu)工(gong)(gong)(gong)(gong)藝(yi)及設備(bei)的(de)(de)原(yuan)因(yin)，對(dui)壓(ya)(ya)(ya)(ya)力(li)(li)(li)、溫(wen)(wen)(wen)(wen)(wen)(wen)度的(de)(de)控(kong)(kong)制也(ye)是(shi)必(bi)不可少的(de)(de)，通過減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)(zhi)可以得(de)到合(he)(he)適的(de)(de)動(dong)力(li)(li)(li)蒸汽(qi)(qi)(qi)(qi)(qi)。例(li)如：當(dang)換(huan)熱(re)(re)器用(yong)(yong)于(yu)制程(cheng)操(cao)作(zuo)時(shi)(shi)，使用(yong)(yong)過熱(re)(re)蒸汽(qi)(qi)(qi)(qi)(qi)由(you)于(yu)低的(de)(de)傳熱(re)(re)系數而(er)降低效率，使用(yong)(yong)飽和(he)蒸汽(qi)(qi)(qi)(qi)(qi)更加(jia)適合(he)(he)。另外當(dang)高壓(ya)(ya)(ya)(ya)的(de)(de)干(gan)飽和(he)蒸汽(qi)(qi)(qi)(qi)(qi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)至低壓(ya)(ya)(ya)(ya)時(shi)(shi)，在下(xia)游出(chu)口(kou)會產(chan)生(sheng)(sheng)過熱(re)(re)度。這樣(yang)都需(xu)(xu)(xu)要(yao)將(jiang)過熱(re)(re)的(de)(de)蒸汽(qi)(qi)(qi)(qi)(qi)降溫(wen)(wen)(wen)(wen)(wen)(wen)至所需(xu)(xu)(xu)的(de)(de)接近(jin)飽和(he)的(de)(de)溫(wen)(wen)(wen)(wen)(wen)(wen)度，這就需(xu)(xu)(xu)要(yao)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)器。在很多(duo)情況下(xia)需(xu)(xu)(xu)要(yao)對(dui)高壓(ya)(ya)(ya)(ya)過熱(re)(re)的(de)(de)蒸汽(qi)(qi)(qi)(qi)(qi)同(tong)時(shi)(shi)進行(xing)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)和(he)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)。減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)(zhi)是(shi)節(jie)能環(huan)保產(chan)品。減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)(zhi)配上相應的(de)(de)工(gong)(gong)(gong)(gong)業(ye)(ye)自動(dong)化(hua)(hua)儀(yi)表(biao)（即(ji)熱(re)(re)控(kong)(kong)柜），可對(dui)電(dian)站或工(gong)(gong)(gong)(gong)業(ye)(ye)鍋(guo)(guo)爐(lu)及熱(re)(re)電(dian)廠(chang)(chang)(chang)等處輸(shu)送來的(de)(de)一(yi)(yi)次（新）蒸汽(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)力(li)(li)(li)P1、溫(wen)(wen)(wen)(wen)(wen)(wen)度T1進行(xing)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)，使其二次蒸汽(qi)(qi)(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)力(li)(li)(li)P2、溫(wen)(wen)(wen)(wen)(wen)(wen)度T2達到生(sheng)(sheng)產(chan)工(gong)(gong)(gong)(gong)藝(yi)所需(xu)(xu)(xu)的(de)(de)要(yao)求(qiu)。廣(guang)泛用(yong)(yong)于(yu)熱(re)(re)電(dian)廠(chang)(chang)(chang)、集(ji)中供熱(re)(re)、食品工(gong)(gong)(gong)(gong)業(ye)(ye)、石化(hua)(hua)工(gong)(gong)(gong)(gong)業(ye)(ye)、紡織工(gong)(gong)(gong)(gong)業(ye)(ye)、橡膠工(gong)(gong)(gong)(gong)業(ye)(ye)、造紙和(he)紙漿(jiang)工(gong)(gong)(gong)(gong)業(ye)(ye)、煙草(cao)工(gong)(gong)(gong)(gong)業(ye)(ye)、制藥等其它很多(duo)行(xing)業(ye)(ye)。為(wei)了滿足(zu)不同(tong)設備(bei)工(gong)(gong)(gong)(gong)藝(yi)要(yao)求(qiu)，我公司(si)提供不同(tong)類型(xing)的(de)(de)減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)（減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)(wen)(wen)、減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)）器，并實現全套智能化(hua)(hua)自動(dong)控(kong)(kong)制或DCS系統聯網。

　　減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)置根(gen)據一次（新(xin)）蒸(zheng)汽(qi)壓力P1、溫(wen)(wen)(wen)(wen)度T1、可分為高溫(wen)(wen)(wen)(wen)高壓減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)置、次高壓減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)置、中(zhong)溫(wen)(wen)(wen)(wen)中(zhong)壓減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)置；減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)置根(gen)據使用情況又可分為減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)裝(zhuang)置、減(jian)(jian)(jian)壓裝(zhuang)置、減(jian)(jian)(jian)溫(wen)(wen)(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)置，

　　減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓裝置(zhi)一般根(gen)據一次(ci)蒸(zheng)汽(qi)(qi)（新蒸(zheng)汽(qi)(qi)）和二次(ci)蒸(zheng)汽(qi)(qi)（即減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓后的(de)(de)蒸(zheng)汽(qi)(qi)）的(de)(de)參數及(ji)(ji)用(yong)(yong)(yong)量進(jin)行(xing)選擇，經常(chang)運行(xing)的(de)(de)減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓裝置(zhi)一般設置(zhi)兩套(tao)，其中一套(tao)作為(wei)備(bei)用(yong)(yong)(yong)；不經常(chang)運行(xing)的(de)(de)減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓裝置(zhi)一般不考慮備(bei)用(yong)(yong)(yong)；備(bei)用(yong)(yong)(yong)的(de)(de)減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓裝置(zhi)應(ying)處于熱(re)備(bei)用(yong)(yong)(yong)狀(zhuang)態(tai)。設計計算時根(gen)據二次(ci)蒸(zheng)汽(qi)(qi)的(de)(de)量確定(ding)進(jin)入減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓裝置(zhi)的(de)(de)一次(ci)蒸(zheng)汽(qi)(qi)和減(jian)(jian)溫(wen)(wen)水量，減(jian)(jian)溫(wen)(wen)水壓力(li)、溫(wen)(wen)度應(ying)滿足噴(pen)水及(ji)(ji)霧化(hua)的(de)(de)要(yao)求，水質不低于蒸(zheng)汽(qi)(qi)品質。

　　2、減溫減壓裝置(zhi)型號編制(zhi)

　　裝置的型號(hao)表示(shi)方法如下(xia)：

　　注1:對于減溫裝(zhuang)置和減壓裝(zhuang)置，其代號則分別為W或Y表示。

　　注2:型(xing)號(hao)有關的壓力值，均保留一位小數。

　　例：WY80-3.82/450-0.98/260-8.0/104表示出(chu)口(kou)蒸氣(qi)流量為80t/h；進口(kou)蒸氣(qi)壓(ya)力3.82MPa，溫度450℃；出(chu)口(kou)蒸汽(qi)壓(ya)力為0.98MPa，溫度260℃；溫度給(gei)水(shui)壓(ya)力為8.0MPa，給(gei)水(shui)溫度為104℃的減溫減壓(ya)裝(zhuang)置。

　　3、減溫減壓裝(zhuang)置執行標(biao)準(zhun)

　　減溫(wen)減壓裝置標準：JB/T6323-2002《減溫(wen)減壓裝置》

　　減溫(wen)減壓閥標(biao)準：GB/10868-2005《電(dian)站減溫(wen)減壓閥》

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

　　4、減(jian)溫減(jian)壓裝置分類方(fang)法

　　A、按結構分類

　　1)、一體(ti)式減(jian)溫減(jian)壓裝(zhuang)置；（WY型(xing)）

　　2)、分體式減溫減壓(ya)裝置；（Y-W型）

　　3)、減溫裝(zhuang)置（W型）；

　　4)、減壓裝置（Y型）；

　　B、按蒸汽參數分類：

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

　　2)、次高壓(ya)減溫(wen)減壓(ya)裝置；（P1≤5.4MPa，溫(wen)度T1≤485℃）；

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

　　5、減(jian)溫減(jian)壓裝置主要性能指標

　　1)、進口蒸汽壓力P1和溫度(du)T1

　　中(zhong)溫中(zhong)壓：P1≤3.82MPa，溫度T1≤425℃。

　　次高(gao)溫高(gao)壓：P1≤5.4MPa，溫度(du)T1≤485℃。

　　高(gao)溫(wen)高(gao)壓：P1≤10MPa，溫(wen)度T1≤540℃。

　　2)、出口蒸汽流(liu)量Q

　　減溫減壓裝置出口流(liu)量Q的變化范圍為(wei)10%Q~120%Q，在(zai)此范圍內調節比(bi)較理想。

　　若有(you)特殊要求(qiu)，可與本公(gong)司協商另定(ding)。

　　3)、出口(kou)蒸汽壓力P2

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

　　4)、出口(kou)蒸(zheng)汽溫度T2

　　出(chu)口蒸汽溫(wen)度T2的調節精度不低于2.5級。±2.5℃；

　　5)、噪音

　　裝置(zhi)正(zheng)常(chang)運行時，在減溫減壓閥下游(you)一米，同時距(ju)管壁(bi)一米處測(ce)其(qi)噪音，噪音音級應(ying)

　　不大(da)于85分(fen)貝。

　　6、減溫減壓裝置訂貨須知

　　訂合(he)同(tong)時請提(ti)供：

　　1)、出口(kou)蒸(zheng)汽流量Q、進口(kou)蒸(zheng)汽壓力P1、溫(wen)度(du)T1、出口(kou)蒸(zheng)汽壓力P2、溫(wen)度(du)T2；

　　2)、減溫給水壓力Pb、溫度tb；

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

　　4)、控制(zhi)類別：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：氣開式或(huo)氣閉(bi)式；正作用(yong)或(huo)反作用(yong)；

　　2)、氣(qi)源(yuan)壓力；

　　3)、其它(ta)附件說明(ming)：用戶如有(you)特殊要求，應(ying)在商定后注(zhu)明(ming)或另行(xing)簽訂技術協(xie)議。

　　注：1出口(kou)蒸汽壓力P2應(ying)(ying)不低(di)于飽和(he)溫(wen)(wen)(wen)度所對應(ying)(ying)的壓力值(zhi)，或出口(kou)蒸汽溫(wen)(wen)(wen)度T2應(ying)(ying)不低(di)于P2所對應(ying)(ying)的飽和(he)溫(wen)(wen)(wen)度值(zhi)；

　　2對減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)一體式(shi)結構(gou)：減(jian)(jian)溫(wen)(wen)給水的壓(ya)力Pb≥0.6P1＋0.8MPa；若Pb值太低，將(jiang)無法(fa)噴入減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓(ya)閥(fa)內(nei)減(jian)(jian)溫(wen)(wen)。

　　（3）對(dui)減溫減壓分體式(shi)結(jie)構：減溫給水的壓力Pb≥P2＋0.6MPa；

　　附(fu)表：基本訂貨要(yao)求(qiu)

　　注：不加注壓力值為(wei)表壓

　　減溫減壓裝置的(de)供貨范(fan)圍為括號標志以內，主要有

　　1.減(jian)壓(ya)系統(tong)：減(jian)溫減(jian)壓(ya)閥(fa)或減(jian)壓(ya)閥(fa)、節流孔板等；

　　2.減溫(wen)系統：給水調節(jie)閥(fa)或可調噴嘴(zui)、截(jie)止閥(fa)、節(jie)流(liu)閥(fa)等(deng)；

　　3.安全系統：安全閥、止回閥等；

　　4.管路(lu)系統：蒸(zheng)汽管道、混(hun)合管道、過渡管、減溫水管等；

　　5.配套(tao)附件：截止閥、雙金屬(shu)溫度計及(ji)接管、壓力表及(ji)三(san)通閥、彎道、接頭、法蘭、襯墊、