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　　1、減(jian)溫減(jian)壓(ya)裝置用(yong)途

　　減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置是(shi)用(yong)來調節(jie)蒸(zheng)汽(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)、溫(wen)(wen)度的(de)(de)(de)(de)(de)重要(yao)裝(zhuang)置，在(zai)(zai)火力(li)(li)發(fa)電(dian)廠(chang)中鍋(guo)爐(lu)(lu)產生(sheng)過熱(re)(re)(re)蒸(zheng)汽(qi)，如(ru)果鍋(guo)爐(lu)(lu)不(bu)(bu)裝(zhuang)備減(jian)(jian)(jian)溫(wen)(wen)器，就無(wu)法將(jiang)(jiang)鍋(guo)爐(lu)(lu)出(chu)(chu)口蒸(zheng)汽(qi)溫(wen)(wen)度控(kong)(kong)(kong)制在(zai)(zai)需(xu)要(yao)范圍內，會(hui)(hui)使(shi)(shi)鍋(guo)爐(lu)(lu)汽(qi)輪機等設備因超(chao)溫(wen)(wen)損壞或造成重大事故。同(tong)(tong)時(shi)，在(zai)(zai)化工(gong)(gong)(gong)、輕工(gong)(gong)(gong)、醫(yi)藥(yao)、食(shi)品(pin)加工(gong)(gong)(gong)等一(yi)切使(shi)(shi)用(yong)蒸(zheng)汽(qi)的(de)(de)(de)(de)(de)生(sheng)產工(gong)(gong)(gong)藝(yi)流(liu)程(cheng)(cheng)中，過熱(re)(re)(re)蒸(zheng)汽(qi)作(zuo)為機械能(neng)(neng)量的(de)(de)(de)(de)(de)產生(sheng)提供了能(neng)(neng)源。而許(xu)多情況下(xia)，飽(bao)和蒸(zheng)汽(qi)是(shi)更適(shi)合使(shi)(shi)用(yong)的(de)(de)(de)(de)(de)，由于工(gong)(gong)(gong)藝(yi)及設備的(de)(de)(de)(de)(de)原因，對(dui)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)、溫(wen)(wen)度的(de)(de)(de)(de)(de)控(kong)(kong)(kong)制也是(shi)必不(bu)(bu)可少的(de)(de)(de)(de)(de)，通過減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置可以得到合適(shi)的(de)(de)(de)(de)(de)動(dong)力(li)(li)蒸(zheng)汽(qi)。例(li)如(ru)：當換(huan)熱(re)(re)(re)器用(yong)于制程(cheng)(cheng)操作(zuo)時(shi)，使(shi)(shi)用(yong)過熱(re)(re)(re)蒸(zheng)汽(qi)由于低的(de)(de)(de)(de)(de)傳(chuan)熱(re)(re)(re)系數而降低效(xiao)率，使(shi)(shi)用(yong)飽(bao)和蒸(zheng)汽(qi)更加適(shi)合。另外當高(gao)壓(ya)(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)干飽(bao)和蒸(zheng)汽(qi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)至低壓(ya)(ya)(ya)(ya)(ya)時(shi)，在(zai)(zai)下(xia)游出(chu)(chu)口會(hui)(hui)產生(sheng)過熱(re)(re)(re)度。這樣都需(xu)要(yao)將(jiang)(jiang)過熱(re)(re)(re)的(de)(de)(de)(de)(de)蒸(zheng)汽(qi)降溫(wen)(wen)至所(suo)需(xu)的(de)(de)(de)(de)(de)接(jie)近飽(bao)和的(de)(de)(de)(de)(de)溫(wen)(wen)度，這就需(xu)要(yao)減(jian)(jian)(jian)溫(wen)(wen)器。在(zai)(zai)很多情況下(xia)需(xu)要(yao)對(dui)高(gao)壓(ya)(ya)(ya)(ya)(ya)過熱(re)(re)(re)的(de)(de)(de)(de)(de)蒸(zheng)汽(qi)同(tong)(tong)時(shi)進行減(jian)(jian)(jian)溫(wen)(wen)和減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)。減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置是(shi)節(jie)能(neng)(neng)環保產品(pin)。減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)裝(zhuang)置配上(shang)相應(ying)的(de)(de)(de)(de)(de)工(gong)(gong)(gong)業(ye)自動(dong)化儀表（即熱(re)(re)(re)控(kong)(kong)(kong)柜），可對(dui)電(dian)站或工(gong)(gong)(gong)業(ye)鍋(guo)爐(lu)(lu)及熱(re)(re)(re)電(dian)廠(chang)等處(chu)輸送來的(de)(de)(de)(de)(de)一(yi)次(ci)(ci)（新）蒸(zheng)汽(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)P1、溫(wen)(wen)度T1進行減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)，使(shi)(shi)其二(er)次(ci)(ci)蒸(zheng)汽(qi)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)P2、溫(wen)(wen)度T2達到生(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)于熱(re)(re)(re)電(dian)廠(chang)、集中供熱(re)(re)(re)、食(shi)品(pin)工(gong)(gong)(gong)業(ye)、石化工(gong)(gong)(gong)業(ye)、紡織工(gong)(gong)(gong)業(ye)、橡膠工(gong)(gong)(gong)業(ye)、造紙(zhi)和紙(zhi)漿工(gong)(gong)(gong)業(ye)、煙草工(gong)(gong)(gong)業(ye)、制藥(yao)等其它很多行業(ye)。為了滿足不(bu)(bu)同(tong)(tong)設備工(gong)(gong)(gong)藝(yi)要(yao)求，我公司提供不(bu)(bu)同(tong)(tong)類型(xing)的(de)(de)(de)(de)(de)減(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)（減(jian)(jian)(jian)溫(wen)(wen)、減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)）器，并實現全(quan)套智能(neng)(neng)化自動(dong)控(kong)(kong)(kong)制或DCS系統聯網。

　　減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)根據(ju)一次（新）蒸汽壓(ya)(ya)(ya)(ya)力(li)P1、溫(wen)(wen)度T1、可分為高(gao)(gao)溫(wen)(wen)高(gao)(gao)壓(ya)(ya)(ya)(ya)減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)、次高(gao)(gao)壓(ya)(ya)(ya)(ya)減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)、中溫(wen)(wen)中壓(ya)(ya)(ya)(ya)減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)；減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)根據(ju)使(shi)用(yong)情況又可分為減(jian)(jian)(jian)(jian)溫(wen)(wen)裝(zhuang)置(zhi)(zhi)、減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)、減(jian)(jian)(jian)(jian)溫(wen)(wen)減(jian)(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)裝(zhuang)置(zhi)(zhi)，

　　減(jian)(jian)(jian)(jian)溫減(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)(zhi)一(yi)(yi)(yi)般(ban)根據一(yi)(yi)(yi)次(ci)蒸(zheng)(zheng)汽（新蒸(zheng)(zheng)汽）和(he)二次(ci)蒸(zheng)(zheng)汽（即減(jian)(jian)(jian)(jian)溫減(jian)(jian)(jian)(jian)壓(ya)后的(de)(de)(de)(de)蒸(zheng)(zheng)汽）的(de)(de)(de)(de)參數(shu)及用量(liang)(liang)進行選擇，經常運行的(de)(de)(de)(de)減(jian)(jian)(jian)(jian)溫減(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)(zhi)一(yi)(yi)(yi)般(ban)設置(zhi)(zhi)(zhi)兩(liang)套，其中一(yi)(yi)(yi)套作為備(bei)(bei)用；不(bu)經常運行的(de)(de)(de)(de)減(jian)(jian)(jian)(jian)溫減(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)(zhi)一(yi)(yi)(yi)般(ban)不(bu)考慮備(bei)(bei)用；備(bei)(bei)用的(de)(de)(de)(de)減(jian)(jian)(jian)(jian)溫減(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)(zhi)應(ying)處于熱備(bei)(bei)用狀(zhuang)態。設計計算時根據二次(ci)蒸(zheng)(zheng)汽的(de)(de)(de)(de)量(liang)(liang)確定進入減(jian)(jian)(jian)(jian)溫減(jian)(jian)(jian)(jian)壓(ya)裝(zhuang)(zhuang)置(zhi)(zhi)(zhi)的(de)(de)(de)(de)一(yi)(yi)(yi)次(ci)蒸(zheng)(zheng)汽和(he)減(jian)(jian)(jian)(jian)溫水(shui)(shui)量(liang)(liang)，減(jian)(jian)(jian)(jian)溫水(shui)(shui)壓(ya)力(li)、溫度應(ying)滿足噴水(shui)(shui)及霧化(hua)的(de)(de)(de)(de)要求，水(shui)(shui)質(zhi)不(bu)低于蒸(zheng)(zheng)汽品質(zhi)。

　　2、減溫減壓裝(zhuang)置型號編制

　　裝置(zhi)的型號表(biao)示方法如(ru)下(xia)：

　　注1:對于減(jian)溫裝(zhuang)置和減(jian)壓裝(zhuang)置，其(qi)代號則(ze)分別為(wei)W或(huo)Y表(biao)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(shi)出(chu)(chu)口蒸氣(qi)流量(liang)為80t/h；進口蒸氣(qi)壓(ya)力(li)3.82MPa，溫(wen)度(du)(du)(du)450℃；出(chu)(chu)口蒸汽壓(ya)力(li)為0.98MPa，溫(wen)度(du)(du)(du)260℃；溫(wen)度(du)(du)(du)給水壓(ya)力(li)為8.0MPa，給水溫(wen)度(du)(du)(du)為104℃的減溫(wen)減壓(ya)裝(zhuang)置。

　　3、減溫減壓(ya)裝置執行標準(zhun)

　　減溫(wen)減壓(ya)(ya)裝(zhuang)置(zhi)標準：JB/T6323-2002《減溫(wen)減壓(ya)(ya)裝(zhuang)置(zhi)》

　　減溫(wen)減壓閥(fa)標準：GB/10868-2005《電站減溫(wen)減壓閥(fa)》

　　給水調節閥標準(zhun)：GB/10869-2005《電站調節閥》

　　4、減溫減壓(ya)裝置分類(lei)方法

　　A、按結構分類

　　1)、一體式減溫減壓裝置；（WY型）

　　2)、分體式減(jian)溫減(jian)壓裝置；（Y-W型）

　　3)、減溫(wen)裝(zhuang)置（W型(xing)）；

　　4)、減壓裝(zhuang)置（Y型）；

　　B、按蒸汽(qi)參數分類：

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

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

　　3)、高(gao)溫(wen)高(gao)壓減溫(wen)減壓裝(zhuang)置；（P1≤10MPa，溫(wen)度(du)T1≤540℃）；

　　5、減溫減壓裝(zhuang)置(zhi)主要性(xing)能指標

　　1)、進口蒸汽(qi)壓(ya)力P1和溫度T1

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

　　次高溫(wen)高壓：P1≤5.4MPa，溫(wen)度T1≤485℃。

　　高溫高壓(ya)：P1≤10MPa，溫度T1≤540℃。

　　2)、出(chu)口蒸汽流量Q

　　減溫減壓(ya)裝置出(chu)口流量(liang)Q的變化范圍(wei)為10%Q~120%Q，在此范圍(wei)內調節比較(jiao)理想(xiang)。

　　若有特(te)殊要求，可與本公司協商另定。

　　3)、出口蒸(zheng)汽壓力(li)P2

　　出口蒸汽壓力P2的調節(jie)精度不低于2.5級(ji)。誤差不大于±0.04MPa；

　　4)、出口蒸汽溫度T2

　　出口(kou)蒸(zheng)汽(qi)溫度T2的(de)調(diao)節(jie)精度不低(di)于2.5級(ji)。±2.5℃；

　　5)、噪音

　　裝置(zhi)正(zheng)常運行時，在(zai)減(jian)溫減(jian)壓閥下游一(yi)米，同時距管(guan)壁一(yi)米處測其噪音(yin)，噪音(yin)音(yin)級應

　　不(bu)大于85分貝。

　　6、減溫減壓裝(zhuang)置(zhi)訂貨須知

　　訂合同時(shi)請(qing)提供：

　　1)、出口蒸(zheng)汽流量Q、進口蒸(zheng)汽壓力P1、溫度(du)T1、出口蒸(zheng)汽壓力P2、溫度(du)T2；

　　2)、減溫給(gei)水壓力Pb、溫度tb；

　　3)、注明(ming)控(kong)制方式；（儀表(biao)盤(pan)控(kong)制，PLC、DCS控(kong)制，DCS監視）

　　4)、控制(zhi)類(lei)別：電動、氣動、液動；

　　選(xuan)擇(ze)氣動閥時還必須提供：

　　1)、作用形式(shi)：氣(qi)開式(shi)或氣(qi)閉式(shi)；正作用或反作用；

　　2)、氣源(yuan)壓力；

　　3)、其它附件說明：用戶如有特殊要求，應在商定后注明或另行簽(qian)訂技術協(xie)議。

　　注：1出(chu)口蒸汽壓(ya)力(li)(li)P2應(ying)(ying)不(bu)低(di)于飽和溫度(du)所(suo)對應(ying)(ying)的壓(ya)力(li)(li)值(zhi)，或出(chu)口蒸汽溫度(du)T2應(ying)(ying)不(bu)低(di)于P2所(suo)對應(ying)(ying)的飽和溫度(du)值(zhi)；

　　2對減(jian)溫(wen)(wen)減(jian)壓一(yi)體式結構：減(jian)溫(wen)(wen)給水的壓力Pb≥0.6P1＋0.8MPa；若Pb值(zhi)太低，將無法噴(pen)入(ru)減(jian)溫(wen)(wen)減(jian)壓閥內減(jian)溫(wen)(wen)。

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

　　附(fu)表：基本訂貨要(yao)求

　　注：不加(jia)注壓力值為表壓

　　減(jian)(jian)溫減(jian)(jian)壓裝置(zhi)的供(gong)貨(huo)范圍為括號(hao)標志以內，主要有

　　1.減壓系統：減溫(wen)減壓閥或減壓閥、節流(liu)孔板(ban)等；

　　2.減(jian)溫系(xi)統：給水(shui)調節(jie)閥或可調噴嘴、截止閥、節(jie)流閥等；

　　3.安(an)全系統(tong)：安(an)全閥、止(zhi)回閥等；

　　4.管(guan)(guan)路系(xi)統：蒸汽管(guan)(guan)道(dao)、混合(he)管(guan)(guan)道(dao)、過渡(du)管(guan)(guan)、減溫水管(guan)(guan)等；

　　5.配套(tao)附件：截止閥、雙(shuang)金屬溫(wen)度計及接(jie)管、壓(ya)力表及三(san)通閥、彎道(dao)、接(jie)頭、法蘭、襯(chen)墊、