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1、J16備案號:8373-2001EIL中華人民共和國電力行業(yè)標(biāo)準(zhǔn)DL/T746一2001電站蝶閥選用導(dǎo)則Guideonselectionofbutterflyvalvesforpowerplant2001一02一12發(fā)布2001一07一01實(shí)施中華人民共和國國家經(jīng)濟(jì)貿(mào)易委員會(huì)發(fā)布L幾汀，山6-21犯前言本標(biāo)準(zhǔn)是根據(jù)原電力工業(yè)部19%年電力行業(yè)標(biāo)準(zhǔn)計(jì)劃項(xiàng)目(技綜〔1996]40號文)的安排制定的。蝶閥作為電站、熱電廠供水、蒸汽、空氣管路系統(tǒng)(特別是冷卻循環(huán)水系統(tǒng))的截流、密封和在一定范圍內(nèi)調(diào)節(jié)流量作用的設(shè)備，已被越來越廣泛地采用。本標(biāo)準(zhǔn)是根據(jù)電站的生產(chǎn)發(fā)展對蝶閥的不斷需要而制
2、定的，規(guī)定了電站蝶閥選用的基本原則，是有關(guān)設(shè)計(jì)院、電廠、生產(chǎn)、施工建設(shè)等單位選用蝶閥的技術(shù)依據(jù)。本標(biāo)準(zhǔn)的附錄A、附錄B是提示的附錄。本標(biāo)準(zhǔn)由電力行業(yè)電站閥門標(biāo)準(zhǔn)化技術(shù)委員會(huì)提出并歸口。本標(biāo)準(zhǔn)起草單位:長沙閥門廠、沙市閥門總廠、鄭州市上街蝶閥廠。本標(biāo)準(zhǔn)主要起草人:劉普成、謝躍龍、余芳、張?jiān)坪?、季桂芳、許林波。本標(biāo)準(zhǔn)由電力行業(yè)電站閥門標(biāo)準(zhǔn)化技術(shù)委員會(huì)負(fù)責(zé)解釋。DL/T746-2001目次前言1范圍·····································，·············································，········
3、·····················??12引用標(biāo)準(zhǔn)·······，·········································，································4················一13蝶閥種類及結(jié)構(gòu)形式···············，···········，···········，?！ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ?，························?！?.??。14型號和參數(shù)················································
4、·························································一35技術(shù)要求·，·，，，·‘。···，·，‘··，，，···，，，，·····，，，，，·······，，，········，，，，······，，，.................···一46檢驗(yàn)規(guī)則·······。···········‘·························································，···，·························??87訂貨·················
5、······，···············，······，···········，·····················································一98標(biāo)志及供貨····，········，·，···········，···········，····················，··································，········??9附錄A(提示的附錄)閥體最小壁厚的計(jì)算·····························································
6、····??11附錄B(提示的附錄)液控止回蝶閥可調(diào)整的開閉時(shí)間及角行程····················，·········，·??11中華人民共和國電力行業(yè)標(biāo)準(zhǔn)電站蝶閥選用導(dǎo)則D1丫T746-2001Guideonselectionofbutterflyvalvesforpower川.川范圍本標(biāo)準(zhǔn)規(guī)定了電站蝶閥的選用原則。本標(biāo)準(zhǔn)適用于火電廠供水、蒸汽、空氣(包括弱腐蝕性流體、兩相流體)管路系統(tǒng)上公稱壓力(PN)為0.05MPa-5.OMPa，公稱通徑(DN)為50mm-4000mm的蝶閥。2引用標(biāo)準(zhǔn)下列標(biāo)準(zhǔn)所包含的條文，通過在本標(biāo)準(zhǔn)中引用而構(gòu)成為本標(biāo)準(zhǔn)的條文。本標(biāo)
7、準(zhǔn)出版時(shí)，所示版本均為有效。所有標(biāo)準(zhǔn)都會(huì)被修訂，使用本標(biāo)準(zhǔn)的各方應(yīng)探討使用下列標(biāo)準(zhǔn)最新版本的可能性。GB150-1998鋼制壓力容器GB/T1047-1995管道元件的公稱通徑GB/T1048-1990管道元件公稱壓力GB/T1184-19%形狀和位置公差未注公差值GB/T1771-1991色漆和清漆耐中性鹽霧性能的測定GB/T9113.1一9113.26-1988整體鋼制管法蘭GB/T9115.1-9115.36-1988對焊鋼制管法蘭GB/T9131-1988鋼制管法蘭壓力一溫度等級GB/T12220-1989
