喷煤煤粉流量检测技术研究及其应用

-1-催♝஋✸✸㉝⌕䞣Ẕ⌟ᡔᴃⷨおঞ݊ᑨ⫼ཷرēฆံඁ˄ϰ࣫໻ᄺֵᙃ⾥ᄺϢᎹ⿟ᄺ䰶ˈ≜䰇ˈ˅ᨬ㽕˖୷ॏ೛ഢਟטᄩ२ঠ२ϵ೴ԅ޿Љಾྡྷޏ೬ઔඕdၽڶ௠ԅ֝ಥտભᄯēပ༘տϢලԅֺ֥ۤಁ΁ԄӾࢗ֟ဈࣿॕ༣޳Љ୷ॏ೛ഢਟטঠᄩ२ঠ२ēͧࣳࡁԨcฑϏcಒ༰cྻރԨఘԉd·ำ೎ຕࠚ౵ॴ؞ֺੋԅޏ೬֟Ⴚຣᅱۤອڑ౥ဈСଶē௶܊ࠚ౵ॴྡྷᄵԨఘ಴غশଈҘਟטঠ२ޙԅಁޙd؞ਟטঠ२ޙӛပ৤༨໹ᅱԨఘ಴ອૉէҎث୶dඹڶညܤಁޙēୣ޿ЉЦࣂ޷ઝ঒ਖ਼է࢈ၫ໿๢ЕԎဟēߦԎॴອדϣރঠ໸έܤճЉ२ԅ࿵ູēပ໒ԙ߈໌ॴЉ२๢ЕdူԨఘ಴മէҎث୶ᆦۦюྡྷ඘ܤᅭᄢࢶဈဟၽຬЉ२ਟטᄩ२ঠ२d؞ਟטঠ२ޙྸၽغশଈਟຂහᄯ࿫ဈ࿫ဈ໒ڴ॥ۚdူຣЦԨᆐјΑճჼݯ࠺է๢Еညဟd݇䬂䆡ġᄦટညܤ୷ॏ೛ഢēᄩ२ঠ२ēغশଈҘਟטēਟטঠ२ޙЁ೒ߚ㉏ো˖TP᭛⤂ᷛ䆚ⷕ˖AResearchofPulverizedCoalMeasurementTechniqueandItsApplicationinBlastFurnaceCoalInjectionSystemYangGang,WangYu-tao(SchoolofInformationScienceandEngineering,Shenyang,110004ChinaAbstract:Massflowratemeasuringofpulverizedcoalinapneumaticconveyingpipelineisatechniqueproblem.Overthepasttwodecadesmanydifferentmethodsanddeviceshavebeendevelopedforcontinuouslymonitoringthemassflowrateofpulverizedcoalinapneumaticpipeline,including:electrostatic,microwave,acousticandcapacitivemethods.Firstly,thepaperintroducesthelevelofthetechnologydevelopmentinthisaspectandthecurrentstateoftherelatedcommercialproducts.Thenadesignofaflowmeterforblastfurnacepulverizedcoalinjection(BFPCI)isintroduced.Theflowmeterhasacapacitivephaseconcentrationtransducerwithspiralshapedelectrodes.Thehomogeneouserrorofthesensitivitydistributioninthesensingfieldislessthan5%byusingoptimumdesign,whichdiminishestheeffectofphasedistributionandflowregimechangesonthemeasurement.Incombinationwithcapacitancebasedvelocitytransducer,itcanbeusedtomeasurethemassflowrateofpulverizedcoal.ThecoalflowmeterhasbeenusedinBFPCIandtheperformanceisgood.Thewholeerrorislessthan5%comparingwiththeelectronicscaleatworksite.Keywords:Pneumaticconveying;Massflowrate;Blastfurnacepulverizedcoalinjection;Coalflowmeterᓩ㿔⇨࡯䕧䗕ㅵ䘧߽⫼⇨ᗕ⌕ԧˈ䗮ᐌЎぎ⇨៪ᛄᗻ⇨ԧˈ԰Ў䕑ԧ䕧䗕㉝⹢ⱘ೎ԧ㉦ᄤབ㉝⢊៪㉦⢊ᴤ᭭[1]DŽ⬅Ѣ⇨࡯䕧䗕ㅵ䘧Ⳃࠡ೼䆌໮ᎹϮ乚ඳЁᑓ⊯ᑨ⫼ˈ䖿ߛ䳔㽕ㅔऩǃৃ䴴ⱘᮍ⊩੠䆒໛ᴹⲥ⌟⇨࡯䕧䗕ㅵ䘧Ё㉝㉦ԧⱘ⌕ࡼ⢊މˈ⡍߿ᰃⲥ⌟݊Ёⱘ䋼䞣⌕䞣DŽᇍ⇨࡯䕧䗕ㅵ䘧䋼䞣⌕䞣㛑໳ᅲ⦄䖲㓁ⲥ⌟ⱘᛣН೼Ѣ˖˄1˅ֱ䆕㉝㉦ԧ⠽᭭ⱘޚ⹂䕧䗕˗˄2˅䇗ᭈ᳔Ӭⱘ䕧䗕ᴵӊҢ㗠Ӭ࣪㛑䞣⍜㗫੠⇨࡯䕧䗕㋏㒳⺼ᤳ˗˄3˅ᑇ㸵೼໡ᴖ⇨࡯䕧䗕㋏㒳Ё৘ߚᬃㅵЁⱘ⌕䞣[2,3]DŽ೼⚐䪕੠➗✸⬉ॖЁˈ催♝੠䫙♝ⱘ஋਍✸㉝⇨࡯䕧䗕ሲѢ݌ൟⱘ⇨೎ϸⳌ⌕ˈ಴ℸ஋✸䅵䞣߭ሲѢ⇨೎ϸⳌ⌕䋼䞣⌕䞣䅵䞣䯂乬DŽ⇨೎ϸⳌ⌕Ϣ݊Ҫ໮Ⳍ⌕ࡼ㋏㒳ϔḋˈ৘Ⳍ䯈ᄬ೼⬠䴶ᬜᑨ੠Ⳍᇍ䗳ᑺˈⳌ⬠䴶೼ᯊ䯈੠ぎ䯈Ϟ䛑ᰃ䱣ᴎৃবⱘˈ㟈Փ݊⌕ࡼ⡍ᗻҹঞẔ⌟ᮍ⊩䖰↨ऩⳌ⌕ࡼ㋏㒳໡ᴖˈ݊⡍ᕕখ᭄г↨ऩⳌ⌕ࡼ㋏㒳໮ˈ䰸њ䗳ᑺǃ⌕䞣ǃ⌕ൟˈ䖬㽕ࣙᣀ⌧ᑺঞ⌧ᑺߚᏗǃ೎⇨䋼䞣෎䞥乍Ⳃ˖೑ᆊ催ᡔᴃⷨお䅵ߦ˄$$˅԰㗙ㅔҟ˖ᴼ䩶˄ˉ˅ˈ⬋ˈ䖑ᅕᴀ⑾Ҏˈϰ࣫໻ᄺ䆆Ꮬⷨおᮍ৥Ў໮Ⳍ⌕খ᭄Ẕ⌟Ϣ᥻ࠊㄝ˗⥟⥝⍯˄ˉ˅ˈཇˈ䖑ᅕ≜䰇Ҏˈϰ࣫໻ᄺࡃᬭᥜDŽ-2-↨ǃ乫㉦ሎᇌঞߚᏗǃϸⳌ⏋ড়ⱘᆚᑺҹঞ䕧䗕⡍ᗻ˖㉬ᑺǃᠽᬷ⥛੠ᇐ⛁㋏᭄ㄝ[4]DŽ⇨ˉ೎ϸⳌ⌕⌕ࡼখ᭄Ẕ⌟Ёˈབ⇨࡯䕧䗕㋏㒳Ё೎ԧ乫㉦ⱘ⌕ࡼˈ乫㉦ⱘ⠽⧚ǃ࣪ᄺঞ⌕ࡼ⡍ᗻ䛑ৃ㛑ᕅડẔ⌟Ҿ఼䕧ߎ᭄᥂ⱘޚ⹂ᗻ[5,6]DŽ⬅Ѣ⇨೎ϸⳌ⌕᠔݋᳝ⱘҹϞ᠔䗄ⱘ໡ᴖ⡍ᗻˈ⇨࡯䕧䗕✸㉝䋼䞣⌕䞣খ᭄ⱘẔ⌟ᰃϔᡔᴃ䲒乬DŽ೼䖛এⱘѠक໮ᑈЁˈ೑ݙ໪᳝䆌໮ϡৠⱘᮍ⊩੠䆒໛ᕫࠄᓔথ⫼ᴹ䖲㓁ⲥ⌟⇨࡯䕧䗕✸㉝⌕䋼䞣⌕䞣ˈ䖭݊ЁࣙᣀᴎẄǃ䴭⬉ǃᖂ⊶ǃܝᄺǃໄᄺǃᇘ㒓㹄ޣ]ҹঞ⬉ᆍㄝᮍ⊩[7-21]DŽ✊㗠䖭ѯᮍ⊩ᅲ䰙Ёⱘᑨ⫼ᬜᵰᑊϡҸҎ⒵ᛣˈ↣⾡ᮍ⊩䛑᳝݊Ӭ㔎⚍੠䗖⫼㣗ೈDŽᴀ᭛ߚЎϸϾ䚼ߚˈ㄀ϔ䚼ߚҟ㒡೑ݙ໪✸㉝⇨೎ϸⳌ⌕Ẕ⌟ᡔᴃⷨお੠ᑨ⫼⦄⢊ঞⳌ݇ѻકˈ㄀Ѡ䚼ߚҟ㒡೑ݙϰ࣫໻ᄺ෎Ѣ⬉ᆍॳ⧚ⱘ⇨೎ϸⳌ⌕⌕䞣䅵ⱘⷨおঞ݊೼೑ݙ⚐䪕催♝✸㉝஋਍㋏㒳Ёⱘᑨ⫼ᚙމDŽ✸㉝⌕䞣Ẕ⌟ᡔᴃ೑ݙ໪ⷨお⦄⢊ঞⳌ݇ѻક⬅Ѣ೼㒓⌟䞣⇨࡯䕧䗕ㅵ䘧Ё✸㉝ⱘ⌕ࡼᇍѢѻક䋼䞣ǃ䖛⿟ᬜ⥛੠㋏㒳ᅝܼⱘ䞡㽕ᛣНˈ೑ݙ໪䆌໮Ҿ఼⫳ѻଚǃ໻ᄺҹঞӕϮ⫼᠋ᆚߛড়԰ˈᡩܹњⳌᔧⱘ䌘⑤⫼Ѣᓔথ䗖ড়ⱘᡔᴃᴹ㾷އ✸㉝⇨೎ϸⳌ⌕⌟䞣䲒乬DŽⳂࠡᏆ䆒䅵ߎϔѯଚક࣪ⱘ⌕䞣Ҿ㸼៪ḋᴎˈ䆌໮ϡৠⱘӴᛳᡔᴃᕫࠄᓔথˈҢᡔᴃথሩ∈ᑇᴹⳟˈ䴭⬉⬉㥋Ẕ⌟ǃᖂ⊶ǃໄথᇘǃᇘ㒓㹄ޣҹঞ⬉ᆍ⊩ᰃЏ⌕DŽ1.1䴭⬉⌕䞣䅵䴭⬉⊩ᰃ⬉ᄺ⊩ⱘϔ⾡ˈᅗᰃ෎Ѣ⌕ࡼ㉝ԧ乫㉦䴭⬉⡍ᗻᅲ⦄ϸⳌ⌕খ᭄Ẕ⌟ⱘDŽ㉝ԧ乫㉦೼⌕࣪៪⇨࡯䕧䗕䖛⿟Ёˈ⬅Ѣ乫㉦Ϣ㺙㕂ຕ䴶ҹঞ乫㉦П䯈ⱘ⺄ᩲǃᨽ᪺ǃߚ⾏ˈ乫㉦੠䕧䗕ㅵ䘧ϞӮ⿃㌃໻䞣ⱘ⬉㥋DŽẔ⌟乫㉦⌕ࡼ䖛⿟Ёѻ⫳ⱘ䴭⬉ాໄ៪乫㉦Ϣ⌟䆩㺙㕂П䯈䕀⿏ⱘ㥋⬉䞣ˈᑊ㒧ড়䗖ᔧⱘֵো໘⧚ᮍ⊩ˈৃᅲ⦄乫㉦ⱘ⌕ࡼখ᭄˄䗳ᑺǃ⌧ᑺǃ⌕䞣˅⌟䞣ˈ⫮㟇乫㉦㉦ᕘⱘᅲᯊẔ⌟DŽ㣅೑ⱘABBǃ㣅೑PCMEǃ㢀݄TR-Tech੠फ䴲ESKOMD䛑ᓔথњⳌᑨⱘᏖഎ࣪ѻકDŽ䖭ѯ⌕䞣䅵ⱘᑨ⫼ᇍ䈵Џ㽕ᰃ➗✸⬉ॖ✸㉝⌕䞣Ẕ⌟ˈᑊϨ䛑Ꮖ೼ᅲ䰙ⱘ➗✸⬉ॖЁᕫࠄ⌟䆩˄೒1˅DŽ⬅Ѣ೼㒓⌟䞣⇨࡯䕧䗕ㅵ䘧Ё✸㉝ⱘ⌕ࡼᇍѢѻક䋼䞣ǃ䖛⿟SHAPE\*MERGEF೒䴭⬉Ӵᛳ఼೼⬉ॖ✸㉝ㅵ䘧Ϟⱘᅝ㺙Fig.1Installationsofelectrostaticsensorsoncoalpipesofpowerplant䴭⬉Ӵᛳᡔᴃⱘሔ䰤ᗻ೼Ѣ⌧ᑺֵোফࠄࣙᣀ✸㉝乫㉦⠽⧚੠࣪ᄺ⡍ᗻ˄乘ܜܙ⬉ǃ㉦ᕘǃ䗳ᑺǃԧ⿃⬉䰏㋏᭄ǃ⬉ҟ䋼ҟ⬉ᐌ᭄ҹঞ࣪ᄺ៤ߚㄝ˅ҹঞㅵ䘧ݙ਼ೈ⦃๗˄⑓ᑺǃ⏽ᑺǃㅵ䘧ᴤ᭭੠ຕ䴶㉫㊭ᑺㄝ˅৘⾡಴㋴ⱘᕅડDŽ⬅Ѣ✸䋼੠⌕ࡼᴵӊ䱣ᯊ䯈ব࣪ⱘϡৃ乘⌟ᗻˈ⌟ᕫⱘ⌧ᑺֵোᑊϡᰃ೎ԧⱘ㒱ᇍ⌧ᑺ-㦋ᕫ䋼䞣⌕䞣᠔䳔ⱘখ᭄DŽ⬅Ѣ䖭Ͼॳ಴ˈϔѯࠊ䗴ଚໄᯢҪӀⱘ䴭⬉✸㉝⌕䞣䅵ҙᦤկৃ⫼Ѣ⌕䞣䍟࢓੠↨䕗ⳂⱘⳌᇍ⌧ᑺ˄䖭ϔ⡍ᗻ䖬㽕䗮䖛䖯ϔℹⱘ䆩偠ќҹ⹂䅸˅DŽ䴭⬉ᡔᴃ㱑✊ᇍѢ✸㉝ⱘѦⳌ݇䗳ᑺ⌟䞣ᕜ⧚ᛇˈԚᇍѢ೎ԧ⌧ᑺⱘ㒱ᇍ⌟䞣㹿䅸Ў෎ᴀϞϡ䗖ড়DŽሑㅵ䴭⬉Ӵᛳᡔᴃ݋᳝ݙ೼ሔ䰤ᗻˈԚᅗϢѦⳌֵ݇ো໘⧚ㅫ⊩Ⳍ㒧ড়ᦤկњ᳔ㅔऩ੠᳔᳝ᬜⱘ⌟䞣✸㉝䗳ᑺⱘᮍ⊩DŽ೑ݙᓔሩ෎Ѣ䴭⬉ॳ⧚䖯㸠✸㉝⌕䞣⌟䞣ⷨおⱘऩԡ᳝ϰफ໻ᄺǃ໽⋹໻ᄺǃढ࣫⬉࡯໻ᄺǃढЁ⾥ᡔ໻ᄺㄝDŽԚᰃⳂࠡ䖬≵᳝䕗⧚ᛇⱘᎹϮ࣪ѻકߎ⦄DŽ1.2ᖂ⊶⌕䞣䅵ᖂ⊶⌕䞣䅵䗮䖛Ӵᛳ఼੠ㅵ䘧П䯈⬉⺕എⱘ㗺ড়ˈѻ⫳ϔϾ⌟䞣എDŽ⌟䞣എⱘᖂ⊶㛑䞣㹿೎ԧ乫㉦ডᇘಲᴹᑊ㹿Ӵᛳ఼᥹ᬊˈЁ༂໘⧚ऩܗᇍ䖭-3-ѯֵোⱘ乥⥛੠ᤃᐙ䖯㸠໘⧚DŽⳂ᳝ࠡϸ⾡㉏ൟᖂ⊶✸㉝⌕䞣䅵ˈথᇘ఼੠᥹ᬊ఼㒘ড়೼ϔ䍋˄೒2੠೒3˅៪㗙ᖂ⊶থᇘ఼੠᥹ᬊ఼ߚ⾏[22](೒4੠೒5)DŽ೒㉦ᄤ⌧ᑺ⌟䞣ᖂ⊶᥹ᬊথ఼Fig.2Microwavetransceiverforparticleconcentrationmeasurement೒ᖋ೑6:5ᖂ⊶೎ԧ⌕䞣⌟䞣ҾFig.3SWRmicrowavesolidflowmeterԢࡳ⥛ᖂ⊶㛑䞣থᇘࠄ⌕എˈҢ⿏ࡼ㉦ᄤডᇘৢ㹿᥹ᬊ఼Ẕ⌟DŽ᥹ᬊ఼䆒䅵ⱘЏ㽕Ӭ⚍ᰃᅝ㺙ᮍ֓DŽ䖭⾡䆒䅵ᄬ೼ⱘ䯂乬ᰃϡ㛑໳ഛࣔ㽚Ⲫ⌕എˈ಴ℸ䗮ᐌ㽕೼ㅵ䘧਼ೈᅝ㺙໮Ͼ᥹ᬊথ఼DŽℸ໪ˈ⬅Ѣᬊথ఼ֵো⏙᱄ᑺ䕗Ꮒˈϡৃ㛑䗮䖛ѦⳌ݇⌟䞣✸㉝䗳ᑺDŽ೒Փ⫼᥹ᬊ఼੠থᇘ఼ⱘӴᛳ఼Ꮧ㕂Fig.4Sensingarrangementusingmicrowavetransmittersandreceivers೼থᇘ఼-᥹ᬊ఼䆒䅵Ёˈㅵ䘧Ϟᅝ㺙ϔᇍ᥹ᬊ఼੠থᇘ఼ˈҹ֓ܙߚ㽚Ⲫ⌕എ㣗ೈ˄೒4˅ˈ೒ᖋ೑3URPHFRQᖂ⊶⌕䞣䅵೼✸㉝ㅵ䘧Ϟⱘᅝ㺙Fig.5InstallationofthePromeconmicrowavesensorsonacoalpipe㉦ᄤ䗳ᑺৃ䗮䖛ϸϾֵোⱘѦⳌ݇䖤ㅫ⹂ᅮDŽᑨ⫼ᖂ⊶⊩ᯊˈㅵ䘧Ёⱘ೎ԧ≝⿃㛑໳ᇐ㟈㋏㒳䇃Ꮒ੠ᖂ⊶എϔᅮ⿟ᑺⱘϡഛࣔᗻDŽℸ໪೼ᑨ⫼Ёˈ䖬㽕䞛প乘䰆᥾ᮑ䙓ܡᖂ⊶㛑䞣㹿ㅵ䘧ݙ㹀ᴤ᭭਌ᬊ[23]DŽᖂ⊶⌕䞣Ӵᛳ఼᱂䘡ᄬ೼ⱘ䯂乬䖬ࣙᣀᅗϢ✸㉝ⱘҟ⬉ᗻ䋼Ⳍ݇ˈ䖭Փᕫ݊ᇍ✸㉝ⱘ࣪ᄺ㒘៤ᬣᛳDŽ1.3䍙ໄ⊶⌟䞣Ҿ䍙ໄ⊶⊩ⱘ⌟䞣ॳ⧚ᰃ˖✸㉝䕧䗕ㅵ䘧ⱘϸϾᇍᑨ㸼䴶Ϟᅝ㺙ϸᇍ䍙ໄ⊶Ӵᛳ఼ˈ㄀ϔᇍӴᛳ఼⫼ᴹ⌟ᅮ䍙ໄ⊶㛝ކ⊓ϸϾᮍ৥˄Ϣ⌕䗳ⱘ⌕৥㑺៤45ᑺ˅ⱘӴ䕧ᯊ䯈ˈᑇ㺙ⱘ㄀ѠᇍӴᛳ఼⫼ᴹ⌟ᅮൖⳈѢ⌕৥Ӵ䕧ⱘ䍙ໄ⊶ⱘ㹄ޣˈ݊㹄ޣЏ㽕ফぎ⇨㋞⌕੠✸㉝⌧ᑺϸ㗙ⱘᕅડDŽЎњ⌟䞣✸㉝ⱘ⌧ᑺˈ㋏㒳೼䖤㸠Пࠡ䳔㽕ᇍ⌕ԧⱘ㋞⌕ᬜᑨ䖯㸠᷵ℷDŽ䖭⾡㉏ൟⱘ⌕䞣Ӵᛳ఼ᯧফ✸㉝㉦ᕘঞ৿∈䞣খ᭄ⱘᕅડDŽ1.4䕤ᇘ⌟䞣Ҿ㸼㢀݄Physel݀ৌᓔথњϔ⾡෎Ѣ䕤ᇘ㹄ޣᡔᴃⱘ✸㉝⌕䞣䅵DŽՓ⫼betaᇘ㒓⌟䞣㸼ᕕㅵ䘧Ё⿔Ⳍ✸㉝乫㉦ⱘ㹄ޣֵোDŽЎޣᇣ⚻ఈ஋ㅵㅵຕᇍ䕤ᇘⱘ਌ᬊˈᇘ㒓䖯ߎにষ⬅⡍⅞ᴤ᭭ࠊ䗴DŽ㣅೑Greenwich੠Teesside໻ᄺՓ⫼Ԣ㛑gamma៪X-ᇘ㒓гℷᓔথ⫼Ѣ✸㉝⌕䞣䅵䞣ⱘ䕤ᇘ㹄ޣᡔᴃ[24,25]DŽ೒6᠔⼎ЎՓ⫼ᑊ㸠gamma-ᇘ㒓ⱘ䕤ᇘ⌟䞣Ӵᛳ᥶༈ḋᴎDŽ-4-೒䞛⫼ᑊ㸠JDPPDᇘ㒓ܝᴳⱘ䕤ᇘ⌟䞣᥶༈Fig.6Radiometricsensingheademployingparallelgamma-raybeams1.5⬉ᆍᓣ✸㉝⌕䞣䅵⬉ᆍ⊩ᰃḍ᥂⬉ᆍᓣӴᛳ఼Ёҟ⬉ᐌ᭄ⱘᬍবҢ㗠ᓩ䍋⬉ֵোⱘব࣪ˈᴹ⌟䞣᠔䳔㽕ⱘখ᭄ⱘᮍ⊩DŽ䆹ᮍ⊩݋᳝ᅝܼৃ䴴ǃ㒣⌢ᗻདǃᯧѢᅝ㺙ǃડᑨᖿㄝ⡍⚍ˈгᰃⳂࠡ೼⚐䪕催♝஋਍✸㉝䅵䞣ЁЏ㽕䞛⫼ⱘ⌟䞣ᮍ⊩DŽৃᑨ⫼Ѣ催♝✸㉝䅵䞣ⱘѻક࣪⬉ᆍᓣ⌕䞣䅵᳝㕢೑Ramsey݀ৌRamseyGranucor೎ԧ⌕䞣⌟䞣㋏㒳ǃᖋ೑ᮃ࿕ᇨ˄SWR˅݀ৌ⌧Ⳍ೎ԧ⌕䞣⌟䞣ҾDensFlowǃᖋ೑F.BLOCK݀ৌCabloc⌕䞣䅵ˈབ㸼1᠔⼎DŽ㸼1෎Ѣ৘⾡Ӵᛳॳ⧚ⱘѻક࣪✸㉝⌕䞣䅵Table1Commercialcoaldustflowmeterbasedonvariablesens