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　　1、減(jian)溫減(jian)壓裝置(zhi)用途

　　減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)是(shi)用(yong)(yong)(yong)來(lai)(lai)調(diao)節(jie)蒸(zheng)(zheng)汽(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)、溫(wen)(wen)(wen)度(du)(du)的(de)(de)(de)(de)(de)重(zhong)要(yao)裝(zhuang)(zhuang)置(zhi)，在(zai)火(huo)力(li)(li)(li)發電廠中(zhong)鍋爐(lu)產生(sheng)過(guo)(guo)(guo)(guo)(guo)熱(re)(re)(re)(re)(re)蒸(zheng)(zheng)汽(qi)(qi)，如果(guo)鍋爐(lu)不裝(zhuang)(zhuang)備(bei)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器(qi)，就無法將鍋爐(lu)出(chu)口蒸(zheng)(zheng)汽(qi)(qi)溫(wen)(wen)(wen)度(du)(du)控(kong)制(zhi)在(zai)需(xu)要(yao)范圍內，會使鍋爐(lu)汽(qi)(qi)輪機等(deng)設(she)備(bei)因超溫(wen)(wen)(wen)損壞或(huo)造(zao)成(cheng)重(zhong)大事故。同時，在(zai)化(hua)(hua)工(gong)(gong)(gong)、輕工(gong)(gong)(gong)、醫藥、食品加(jia)工(gong)(gong)(gong)等(deng)一切使用(yong)(yong)(yong)蒸(zheng)(zheng)汽(qi)(qi)的(de)(de)(de)(de)(de)生(sheng)產工(gong)(gong)(gong)藝(yi)流(liu)程(cheng)中(zhong)，過(guo)(guo)(guo)(guo)(guo)熱(re)(re)(re)(re)(re)蒸(zheng)(zheng)汽(qi)(qi)作為(wei)(wei)機械能量的(de)(de)(de)(de)(de)產生(sheng)提供了(le)能源。而許多情況(kuang)(kuang)下，飽和蒸(zheng)(zheng)汽(qi)(qi)是(shi)更適(shi)合使用(yong)(yong)(yong)的(de)(de)(de)(de)(de)，由于(yu)工(gong)(gong)(gong)藝(yi)及設(she)備(bei)的(de)(de)(de)(de)(de)原因，對(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)、溫(wen)(wen)(wen)度(du)(du)的(de)(de)(de)(de)(de)控(kong)制(zhi)也是(shi)必不可(ke)(ke)少的(de)(de)(de)(de)(de)，通過(guo)(guo)(guo)(guo)(guo)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)可(ke)(ke)以得到合適(shi)的(de)(de)(de)(de)(de)動力(li)(li)(li)蒸(zheng)(zheng)汽(qi)(qi)。例(li)如：當換熱(re)(re)(re)(re)(re)器(qi)用(yong)(yong)(yong)于(yu)制(zhi)程(cheng)操作時，使用(yong)(yong)(yong)過(guo)(guo)(guo)(guo)(guo)熱(re)(re)(re)(re)(re)蒸(zheng)(zheng)汽(qi)(qi)由于(yu)低(di)的(de)(de)(de)(de)(de)傳(chuan)熱(re)(re)(re)(re)(re)系數而降低(di)效(xiao)率(lv)，使用(yong)(yong)(yong)飽和蒸(zheng)(zheng)汽(qi)(qi)更加(jia)適(shi)合。另外(wai)當高(gao)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)干飽和蒸(zheng)(zheng)汽(qi)(qi)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)至(zhi)低(di)壓(ya)(ya)(ya)(ya)(ya)時，在(zai)下游(you)出(chu)口會產生(sheng)過(guo)(guo)(guo)(guo)(guo)熱(re)(re)(re)(re)(re)度(du)(du)。這(zhe)樣(yang)都需(xu)要(yao)將過(guo)(guo)(guo)(guo)(guo)熱(re)(re)(re)(re)(re)的(de)(de)(de)(de)(de)蒸(zheng)(zheng)汽(qi)(qi)降溫(wen)(wen)(wen)至(zhi)所(suo)需(xu)的(de)(de)(de)(de)(de)接近(jin)飽和的(de)(de)(de)(de)(de)溫(wen)(wen)(wen)度(du)(du)，這(zhe)就需(xu)要(yao)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)器(qi)。在(zai)很(hen)多情況(kuang)(kuang)下需(xu)要(yao)對(dui)高(gao)壓(ya)(ya)(ya)(ya)(ya)過(guo)(guo)(guo)(guo)(guo)熱(re)(re)(re)(re)(re)的(de)(de)(de)(de)(de)蒸(zheng)(zheng)汽(qi)(qi)同時進(jin)行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)和減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)是(shi)節(jie)能環保(bao)產品。減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)(zhuang)置(zhi)配上相(xiang)應的(de)(de)(de)(de)(de)工(gong)(gong)(gong)業(ye)自動化(hua)(hua)儀(yi)表（即熱(re)(re)(re)(re)(re)控(kong)柜），可(ke)(ke)對(dui)電站或(huo)工(gong)(gong)(gong)業(ye)鍋爐(lu)及熱(re)(re)(re)(re)(re)電廠等(deng)處輸送來(lai)(lai)的(de)(de)(de)(de)(de)一次（新(xin)）蒸(zheng)(zheng)汽(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)P1、溫(wen)(wen)(wen)度(du)(du)T1進(jin)行(xing)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)，使其二(er)次蒸(zheng)(zheng)汽(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)P2、溫(wen)(wen)(wen)度(du)(du)T2達(da)到生(sheng)產工(gong)(gong)(gong)藝(yi)所(suo)需(xu)的(de)(de)(de)(de)(de)要(yao)求。廣泛用(yong)(yong)(yong)于(yu)熱(re)(re)(re)(re)(re)電廠、集(ji)中(zhong)供熱(re)(re)(re)(re)(re)、食品工(gong)(gong)(gong)業(ye)、石化(hua)(hua)工(gong)(gong)(gong)業(ye)、紡織工(gong)(gong)(gong)業(ye)、橡膠(jiao)工(gong)(gong)(gong)業(ye)、造(zao)紙(zhi)和紙(zhi)漿工(gong)(gong)(gong)業(ye)、煙草工(gong)(gong)(gong)業(ye)、制(zhi)藥等(deng)其它很(hen)多行(xing)業(ye)。為(wei)(wei)了(le)滿足不同設(she)備(bei)工(gong)(gong)(gong)藝(yi)要(yao)求，我公司(si)提供不同類型的(de)(de)(de)(de)(de)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)（減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)溫(wen)(wen)(wen)、減(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)）器(qi)，并實現全套智能化(hua)(hua)自動控(kong)制(zhi)或(huo)DCS系統(tong)聯網。

　　減溫(wen)(wen)減壓(ya)(ya)(ya)裝(zhuang)置(zhi)根(gen)據一次（新(xin)）蒸(zheng)汽(qi)壓(ya)(ya)(ya)力P1、溫(wen)(wen)度T1、可分為(wei)(wei)高溫(wen)(wen)高壓(ya)(ya)(ya)減溫(wen)(wen)減壓(ya)(ya)(ya)裝(zhuang)置(zhi)、次高壓(ya)(ya)(ya)減溫(wen)(wen)減壓(ya)(ya)(ya)裝(zhuang)置(zhi)、中溫(wen)(wen)中壓(ya)(ya)(ya)減溫(wen)(wen)減壓(ya)(ya)(ya)裝(zhuang)置(zhi)；減溫(wen)(wen)減壓(ya)(ya)(ya)裝(zhuang)置(zhi)根(gen)據使用情況又可分為(wei)(wei)減溫(wen)(wen)裝(zhuang)置(zhi)、減壓(ya)(ya)(ya)裝(zhuang)置(zhi)、減溫(wen)(wen)減壓(ya)(ya)(ya)裝(zhuang)置(zhi)，

　　減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)(zhuang)置(zhi)一(yi)般根(gen)據一(yi)次蒸(zheng)(zheng)(zheng)汽(qi)（新蒸(zheng)(zheng)(zheng)汽(qi)）和二(er)次蒸(zheng)(zheng)(zheng)汽(qi)（即(ji)減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓后的蒸(zheng)(zheng)(zheng)汽(qi)）的參數及(ji)用(yong)(yong)量進行(xing)選擇，經常運行(xing)的減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)(zhuang)置(zhi)一(yi)般設(she)置(zhi)兩套(tao)，其中一(yi)套(tao)作(zuo)為備(bei)用(yong)(yong)；不(bu)經常運行(xing)的減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)(zhuang)置(zhi)一(yi)般不(bu)考慮備(bei)用(yong)(yong)；備(bei)用(yong)(yong)的減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)(zhuang)置(zhi)應處于(yu)熱備(bei)用(yong)(yong)狀態。設(she)計(ji)計(ji)算(suan)時根(gen)據二(er)次蒸(zheng)(zheng)(zheng)汽(qi)的量確定進入減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓裝(zhuang)(zhuang)置(zhi)的一(yi)次蒸(zheng)(zheng)(zheng)汽(qi)和減(jian)(jian)(jian)溫(wen)(wen)水(shui)量，減(jian)(jian)(jian)溫(wen)(wen)水(shui)壓力、溫(wen)(wen)度應滿足噴水(shui)及(ji)霧(wu)化的要求，水(shui)質不(bu)低于(yu)蒸(zheng)(zheng)(zheng)汽(qi)品質。

　　2、減溫減壓(ya)裝置型號編(bian)制

　　裝(zhuang)置的型號表(biao)示方法如(ru)下：

　　注1:對于減溫裝(zhuang)置和減壓裝(zhuang)置，其代號則分(fen)別(bie)為(wei)W或Y表(biao)示(shi)。

　　注2:型(xing)號有關的壓力值，均保留一(yi)位小數。

　　例：WY80-3.82/450-0.98/260-8.0/104表示出口(kou)(kou)蒸(zheng)氣流(liu)量為(wei)80t/h；進口(kou)(kou)蒸(zheng)氣壓(ya)力(li)3.82MPa，溫(wen)度450℃；出口(kou)(kou)蒸(zheng)汽壓(ya)力(li)為(wei)0.98MPa，溫(wen)度260℃；溫(wen)度給水壓(ya)力(li)為(wei)8.0MPa，給水溫(wen)度為(wei)104℃的減(jian)溫(wen)減(jian)壓(ya)裝置。

　　3、減(jian)溫(wen)減(jian)壓裝置執行標(biao)準

　　減溫減壓裝(zhuang)置標準：JB/T6323-2002《減溫減壓裝(zhuang)置》

　　減溫減壓閥標(biao)準：GB/10868-2005《電站減溫減壓閥》

　　給水(shui)調節(jie)閥標準：GB/10869-2005《電站調節(jie)閥》

　　4、減(jian)溫減(jian)壓裝(zhuang)置(zhi)分類方(fang)法

　　A、按結構分類

　　1)、一體(ti)式(shi)減溫(wen)減壓裝置；（WY型）

　　2)、分體式減溫減壓裝置；（Y-W型）

　　3)、減溫裝(zhuang)置（W型）；

　　4)、減壓(ya)裝置（Y型）；

　　B、按蒸(zheng)汽參(can)數(shu)分類：

　　1)、中(zhong)溫中(zhong)壓減溫減壓裝置；（P1≤3.82MPa，溫度(du)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(wen)高(gao)壓減(jian)溫(wen)減(jian)壓裝置；（P1≤10MPa，溫(wen)度T1≤540℃）；

　　5、減溫減壓裝(zhuang)置(zhi)主要(yao)性能(neng)指(zhi)標

　　1)、進(jin)口蒸汽壓力P1和(he)溫(wen)度T1

　　中溫中壓：P1≤3.82MPa，溫度T1≤425℃。

　　次高溫高壓：P1≤5.4MPa，溫度T1≤485℃。

　　高溫高壓：P1≤10MPa，溫度T1≤540℃。

　　2)、出(chu)口(kou)蒸汽流量Q

　　減(jian)溫減(jian)壓裝置(zhi)出口流量Q的變(bian)化范(fan)圍為10%Q~120%Q，在此范(fan)圍內調節(jie)比較(jiao)理想。

　　若有特殊要求，可與本公(gong)司協商(shang)另定(ding)。

　　3)、出口(kou)蒸汽壓力(li)P2

　　出口蒸汽壓(ya)力(li)P2的調(diao)節精度不低于2.5級。誤差不大于±0.04MPa；

　　4)、出口(kou)蒸(zheng)汽(qi)溫(wen)度T2

　　出(chu)口蒸汽溫度(du)T2的(de)調節精度(du)不(bu)低(di)于(yu)2.5級。±2.5℃；

　　5)、噪音

　　裝置正常運(yun)行時(shi)，在減溫減壓(ya)閥(fa)下游一米(mi)，同時(shi)距管(guan)壁一米(mi)處測其噪(zao)音(yin)，噪(zao)音(yin)音(yin)級應

　　不(bu)大于85分(fen)貝。

　　6、減溫減壓裝置訂貨(huo)須知

　　訂合(he)同(tong)時請提供：

　　1)、出口(kou)蒸汽流(liu)量Q、進口(kou)蒸汽壓力P1、溫度(du)T1、出口(kou)蒸汽壓力P2、溫度(du)T2；

　　2)、減溫(wen)給水(shui)壓(ya)力Pb、溫(wen)度tb；

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

　　4)、控制類別(bie)：電動(dong)、氣(qi)動(dong)、液動(dong)；

　　選擇(ze)氣動(dong)閥時還必須提(ti)供(gong)：

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

　　2)、氣源(yuan)壓(ya)力；

　　3)、其它附件說明(ming)：用戶如有(you)特殊(shu)要求，應在(zai)商定后注明(ming)或另行簽訂技術協(xie)議。

　　注：1出(chu)(chu)口蒸(zheng)汽壓(ya)力P2應不(bu)低于飽和溫(wen)(wen)度(du)所(suo)對應的壓(ya)力值(zhi)，或出(chu)(chu)口蒸(zheng)汽溫(wen)(wen)度(du)T2應不(bu)低于P2所(suo)對應的飽和溫(wen)(wen)度(du)值(zhi)；

　　2對減(jian)溫(wen)減(jian)壓(ya)(ya)一體式結(jie)構：減(jian)溫(wen)給水的(de)壓(ya)(ya)力Pb≥0.6P1＋0.8MPa；若Pb值太(tai)低(di)，將無法噴(pen)入減(jian)溫(wen)減(jian)壓(ya)(ya)閥內減(jian)溫(wen)。

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

　　附表：基本訂貨要(yao)求

　　注：不(bu)加注壓力值為表壓

　　減溫(wen)減壓裝置的供貨范圍為括號標志以內，主要有

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

　　2.減(jian)溫系統：給水(shui)調節(jie)閥(fa)或可(ke)調噴嘴(zui)、截止閥(fa)、節(jie)流(liu)閥(fa)等(deng)；

　　3.安(an)全系統(tong)：安(an)全閥、止回(hui)閥等；

　　4.管(guan)(guan)路系統：蒸汽管(guan)(guan)道(dao)(dao)、混合管(guan)(guan)道(dao)(dao)、過(guo)渡管(guan)(guan)、減(jian)溫水管(guan)(guan)等；

　　5.配套(tao)附件：截止閥、雙金屬(shu)溫(wen)度(du)計(ji)及接管、壓力表及三通閥、彎(wan)道、接頭、法蘭、襯(chen)墊、