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　　1、減(jian)溫減(jian)壓裝置用途

　　減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置是用來調節(jie)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)、溫(wen)(wen)(wen)度的(de)(de)重要(yao)裝(zhuang)置，在火力(li)(li)發電廠(chang)中鍋(guo)(guo)爐(lu)產生過(guo)熱(re)(re)(re)(re)(re)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)，如果鍋(guo)(guo)爐(lu)不(bu)(bu)(bu)裝(zhuang)備(bei)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器，就(jiu)無法將鍋(guo)(guo)爐(lu)出(chu)口(kou)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)溫(wen)(wen)(wen)度控(kong)(kong)制(zhi)(zhi)在需要(yao)范圍內，會(hui)使(shi)鍋(guo)(guo)爐(lu)汽(qi)(qi)(qi)輪機等(deng)設(she)備(bei)因超溫(wen)(wen)(wen)損(sun)壞或造成重大事(shi)故。同時(shi)，在化工(gong)(gong)(gong)(gong)(gong)、輕工(gong)(gong)(gong)(gong)(gong)、醫(yi)藥、食品加工(gong)(gong)(gong)(gong)(gong)等(deng)一(yi)切(qie)使(shi)用蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)的(de)(de)生產工(gong)(gong)(gong)(gong)(gong)藝(yi)流程中，過(guo)熱(re)(re)(re)(re)(re)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)作為機械能(neng)量的(de)(de)產生提供(gong)了能(neng)源。而許多情況下，飽(bao)和(he)(he)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)是更(geng)適(shi)合使(shi)用的(de)(de)，由于(yu)工(gong)(gong)(gong)(gong)(gong)藝(yi)及設(she)備(bei)的(de)(de)原因，對(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)、溫(wen)(wen)(wen)度的(de)(de)控(kong)(kong)制(zhi)(zhi)也是必不(bu)(bu)(bu)可(ke)少的(de)(de)，通過(guo)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置可(ke)以(yi)得到(dao)合適(shi)的(de)(de)動力(li)(li)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)。例(li)如：當換(huan)熱(re)(re)(re)(re)(re)器用于(yu)制(zhi)(zhi)程操(cao)作時(shi)，使(shi)用過(guo)熱(re)(re)(re)(re)(re)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)由于(yu)低(di)的(de)(de)傳熱(re)(re)(re)(re)(re)系(xi)數而降低(di)效率，使(shi)用飽(bao)和(he)(he)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)更(geng)加適(shi)合。另外(wai)當高壓(ya)(ya)(ya)(ya)(ya)的(de)(de)干(gan)飽(bao)和(he)(he)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)至低(di)壓(ya)(ya)(ya)(ya)(ya)時(shi)，在下游出(chu)口(kou)會(hui)產生過(guo)熱(re)(re)(re)(re)(re)度。這(zhe)樣都需要(yao)將過(guo)熱(re)(re)(re)(re)(re)的(de)(de)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)降溫(wen)(wen)(wen)至所(suo)需的(de)(de)接近飽(bao)和(he)(he)的(de)(de)溫(wen)(wen)(wen)度，這(zhe)就(jiu)需要(yao)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器。在很(hen)多情況下需要(yao)對(dui)高壓(ya)(ya)(ya)(ya)(ya)過(guo)熱(re)(re)(re)(re)(re)的(de)(de)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)同時(shi)進(jin)行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)和(he)(he)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置是節(jie)能(neng)環保(bao)產品。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置配上(shang)相應的(de)(de)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)自動化儀表（即熱(re)(re)(re)(re)(re)控(kong)(kong)柜），可(ke)對(dui)電站(zhan)或工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)鍋(guo)(guo)爐(lu)及熱(re)(re)(re)(re)(re)電廠(chang)等(deng)處輸(shu)送(song)來的(de)(de)一(yi)次(ci)（新）蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)P1、溫(wen)(wen)(wen)度T1進(jin)行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)，使(shi)其二(er)次(ci)蒸(zheng)(zheng)(zheng)汽(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)P2、溫(wen)(wen)(wen)度T2達(da)到(dao)生產工(gong)(gong)(gong)(gong)(gong)藝(yi)所(suo)需的(de)(de)要(yao)求。廣(guang)泛用于(yu)熱(re)(re)(re)(re)(re)電廠(chang)、集中供(gong)熱(re)(re)(re)(re)(re)、食品工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、石化工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、紡織工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、橡(xiang)膠工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、造紙和(he)(he)紙漿工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、煙草(cao)工(gong)(gong)(gong)(gong)(gong)業(ye)(ye)、制(zhi)(zhi)藥等(deng)其它很(hen)多行(xing)業(ye)(ye)。為了滿足不(bu)(bu)(bu)同設(she)備(bei)工(gong)(gong)(gong)(gong)(gong)藝(yi)要(yao)求，我公司提供(gong)不(bu)(bu)(bu)同類(lei)型的(de)(de)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)（減(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)、減(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)）器，并實(shi)現全套智能(neng)化自動控(kong)(kong)制(zhi)(zhi)或DCS系(xi)統聯網。

　　減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置根(gen)據(ju)一次（新）蒸汽壓(ya)(ya)(ya)力P1、溫(wen)(wen)(wen)度T1、可分(fen)為(wei)高(gao)溫(wen)(wen)(wen)高(gao)壓(ya)(ya)(ya)減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置、次高(gao)壓(ya)(ya)(ya)減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置、中溫(wen)(wen)(wen)中壓(ya)(ya)(ya)減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置；減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置根(gen)據(ju)使用(yong)情況又可分(fen)為(wei)減(jian)(jian)溫(wen)(wen)(wen)裝(zhuang)(zhuang)(zhuang)置、減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置、減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)(ya)(ya)裝(zhuang)(zhuang)(zhuang)置，

　　減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)一(yi)(yi)般(ban)根據(ju)一(yi)(yi)次(ci)(ci)蒸(zheng)(zheng)(zheng)汽(qi)（新蒸(zheng)(zheng)(zheng)汽(qi)）和二次(ci)(ci)蒸(zheng)(zheng)(zheng)汽(qi)（即減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)后的(de)(de)(de)蒸(zheng)(zheng)(zheng)汽(qi)）的(de)(de)(de)參數及(ji)用(yong)量(liang)進(jin)行選擇，經(jing)常運行的(de)(de)(de)減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)一(yi)(yi)般(ban)設置(zhi)(zhi)(zhi)兩套，其中(zhong)一(yi)(yi)套作(zuo)為備用(yong)；不(bu)經(jing)常運行的(de)(de)(de)減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)一(yi)(yi)般(ban)不(bu)考慮備用(yong)；備用(yong)的(de)(de)(de)減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)應(ying)處于熱備用(yong)狀態。設計(ji)計(ji)算時(shi)根據(ju)二次(ci)(ci)蒸(zheng)(zheng)(zheng)汽(qi)的(de)(de)(de)量(liang)確定進(jin)入(ru)減(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)壓(ya)裝(zhuang)(zhuang)(zhuang)置(zhi)(zhi)(zhi)的(de)(de)(de)一(yi)(yi)次(ci)(ci)蒸(zheng)(zheng)(zheng)汽(qi)和減(jian)(jian)溫(wen)(wen)(wen)水(shui)(shui)(shui)量(liang)，減(jian)(jian)溫(wen)(wen)(wen)水(shui)(shui)(shui)壓(ya)力(li)、溫(wen)(wen)(wen)度應(ying)滿足噴水(shui)(shui)(shui)及(ji)霧化的(de)(de)(de)要求，水(shui)(shui)(shui)質不(bu)低于蒸(zheng)(zheng)(zheng)汽(qi)品質。

　　2、減溫減壓裝置型(xing)號編(bian)制

　　裝置的型號(hao)表示方(fang)法如下：

　　注1:對(dui)于減溫裝置和減壓裝置，其(qi)代號則分別為W或Y表示(shi)。

　　注(zhu)2:型(xing)號有關的(de)壓力值，均保留(liu)一位小數。

　　例：WY80-3.82/450-0.98/260-8.0/104表示(shi)出口(kou)蒸氣(qi)流量為(wei)80t/h；進口(kou)蒸氣(qi)壓力(li)(li)3.82MPa，溫度450℃；出口(kou)蒸汽壓力(li)(li)為(wei)0.98MPa，溫度260℃；溫度給(gei)水壓力(li)(li)為(wei)8.0MPa，給(gei)水溫度為(wei)104℃的減溫減壓裝(zhuang)置。

　　3、減溫(wen)減壓(ya)裝置執行標準

　　減(jian)溫減(jian)壓(ya)裝置標(biao)準(zhun)：JB/T6323-2002《減(jian)溫減(jian)壓(ya)裝置》

　　減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓閥(fa)標準：GB/10868-2005《電站減(jian)(jian)溫(wen)(wen)減(jian)(jian)壓閥(fa)》

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

　　4、減溫減壓裝(zhuang)置(zhi)分(fen)類方法

　　A、按結構分類

　　1)、一體式減溫減壓裝置；（WY型）

　　2)、分(fen)體式(shi)減(jian)(jian)溫減(jian)(jian)壓裝置；（Y-W型）

　　3)、減溫裝置（W型）；

　　4)、減壓裝置(zhi)（Y型）；

　　B、按蒸汽參(can)數分類：

　　1)、中溫中壓減溫減壓裝置；（P1≤3.82MPa，溫度T1≤425℃）；

　　2)、次高壓減(jian)溫(wen)減(jian)壓裝置；（P1≤5.4MPa，溫(wen)度T1≤485℃）；

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

　　5、減溫減壓裝置主(zhu)要性能指標(biao)

　　1)、進口蒸汽壓力(li)P1和溫度T1

　　中溫(wen)中壓：P1≤3.82MPa，溫(wen)度T1≤425℃。

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

　　高溫(wen)高壓：P1≤10MPa，溫(wen)度T1≤540℃。

　　2)、出口蒸汽流量Q

　　減溫減壓裝(zhuang)置出口(kou)流(liu)量Q的變(bian)化范圍為(wei)10%Q~120%Q，在此范圍內(nei)調節比較理想。

　　若(ruo)有特殊要求，可與本(ben)公司(si)協商另定。

　　3)、出口(kou)蒸汽壓力(li)P2

　　出(chu)口(kou)蒸汽壓(ya)力P2的調節精度(du)不低于2.5級。誤差不大于±0.04MPa；

　　4)、出口蒸汽(qi)溫(wen)度T2

　　出口(kou)蒸(zheng)汽溫度(du)T2的調(diao)節(jie)精(jing)度(du)不(bu)低(di)于(yu)2.5級。±2.5℃；

　　5)、噪音

　　裝置正常運(yun)行時，在減溫減壓閥下游一米，同時距管壁一米處(chu)測(ce)其噪音(yin)，噪音(yin)音(yin)級應

　　不大于85分貝。

　　6、減(jian)溫減(jian)壓裝置訂貨須(xu)知

　　訂合同(tong)時請提供：

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

　　2)、減溫給水壓力Pb、溫度tb；

　　3)、注(zhu)明控(kong)制方式(shi)；（儀表盤控(kong)制，PLC、DCS控(kong)制，DCS監視）

　　4)、控制(zhi)類別(bie)：電動、氣動、液動；

　　選擇氣(qi)動(dong)閥時還必(bi)須提供：

　　1)、作用形(xing)式(shi)：氣(qi)開(kai)式(shi)或(huo)(huo)氣(qi)閉式(shi)；正(zheng)作用或(huo)(huo)反作用；

　　2)、氣源壓力；

　　3)、其它附件說明：用戶(hu)如有特殊(shu)要求，應在商定后(hou)注明或另行簽訂技(ji)術協議。

　　注(zhu)：1出(chu)口蒸汽壓(ya)(ya)力(li)P2應(ying)不低于飽和(he)溫(wen)度(du)所對應(ying)的壓(ya)(ya)力(li)值，或出(chu)口蒸汽溫(wen)度(du)T2應(ying)不低于P2所對應(ying)的飽和(he)溫(wen)度(du)值；

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

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

　　附表：基本(ben)訂貨要(yao)求

　　注：不加注壓力(li)值為表壓

　　減(jian)溫減(jian)壓裝置的供貨范圍為括號標志以內(nei)，主要(yao)有

　　1.減(jian)壓(ya)系統：減(jian)溫(wen)減(jian)壓(ya)閥或減(jian)壓(ya)閥、節流孔板等；

　　2.減溫系統：給水調(diao)節閥或(huo)可調(diao)噴嘴、截止閥、節流閥等；

　　3.安(an)全系統：安(an)全閥、止回閥等；

　　4.管路系(xi)統：蒸汽管道、混合管道、過渡管、減溫水管等；

　　5.配(pei)套附件：截止(zhi)閥(fa)、雙(shuang)金屬溫度計及(ji)接(jie)管(guan)、壓力表及(ji)三通(tong)閥(fa)、彎(wan)道、接(jie)頭(tou)、法蘭、襯墊、