Ukukhetha ivalve kunye nokuthatha indawo yokhuseleko Ukukhetha iValve kunye nofakelo lwenkqubo yokuvelisa ubushushu benkunkuma
Ukubaluleka kokukhethwa kwe-valve yokulungiswa kwesakhiwo se-valve kusekelwe ekusebenziseni i-valve ephakathi, ubushushu, uxinzelelo ngaphambi nangemva kwevalve, ukuhamba, iipropati zomzimba kunye neekhemikhali ze-medium kunye neqondo lezinto zokucoceka kweendaba ezifana nokuqwalaselwa okubanzi ukwenza isigqibo. Ukukhethwa kwesakhiwo se-valve sokuchaneka kunye nengqiqo, ehambelana ngqo nokusetyenziswa kokusebenza, ukulawula ukusebenza, ukulawula ukuzinza, kunye nobomi benkonzo.
Ukubaluleka kokukhetha ivalvu
Ukukhethwa kwesakhiwo sevalve kusekelwe ekusebenziseni i-medium, iqondo lokushisa, uxinzelelo ngaphambi nangemva kwevalve, ukuhamba, iipropati zomzimba kunye neekhemikhali ze-medium kunye neqondo elicocekileyo le-medium kunye nezinye izinto. Ukukhethwa kwesakhiwo se-valve sokuchaneka kunye nengqiqo, ehambelana ngqo nokusetyenziswa kokusebenza, ukulawula ukusebenza, ukulawula ukuzinza, kunye nobomi benkonzo.
Ukukhetha ivalve kufuneka kuphunyezwe ulwazi lwemeko yokusebenza
I. Iiparamitha zenkqubo:
1. Igama eliphakathi.
I-2, ubuninzi obuphakathi, i-viscosity, ubushushu, ukucoceka okuphakathi (kunye ne-particulate matter).
I-3, iipropati zomzimba kunye neekhemikhali ze-medium: ezifana ne-corrosion, i-toxicity, i-asidi kunye ne-alkaline.
4, ukuhamba okuphakathi: kukhulu, kuqhelekileyo, kuncinci.
I-5, ivalve ephakathi ngaphambili, emva koxinzelelo lwevalve: inkulu ngokwentelekiso, eqhelekileyo, encinci.
6. I-viscosity ephakathi, i-viscosity enkulu, ngakumbi ixabiso le-Cv yokubala.
Ezi PARAMETHA ZISETYENZISWA EKUBALA UBUKHULU BEVALVVU, IXABISO LE-Cv EREYIWEYO, KUNYE NEZINTO EZIFANELEKILEYO KWI-valve.
Ezimbini, iiparamitha ezisebenzayo:
1. Indlela yokwenza: umbane, i-pneumatic, i-electro-hydraulic, i-hydraulic.
2, umsebenzi wevalvu: ukulawulwa, ukunqunyulwa, ukulawulwa kunye nokunqunyulwa kokwabelana.
I-3, imo yokulawula: i-positioner, i-valve ye-solenoid, i-valve yokunciphisa uxinzelelo.
4. Iimfuno zexesha lokusebenza.
Le nxalenye yeeparamitha zisetyenziselwa ukugqiba iimfuno zokusebenza zevalve kufuneka ziqwalaselwe kunye nezinye izincedisi.
Ezintathu, iiparamitha zokukhusela ubungqina bokudubula:
1, ibakala lobungqina bokudubula.
2. Inqanaba lokhuseleko.
4. Imeko-bume kunye neeparamitha eziguqukayo:
1. Ubushushu be-Ambient.
2, iiparamitha zamandla: uxinzelelo lomoya, uxinzelelo lwamandla.
Imiqathango yokutshintshwa kwevalvu
Ukuba i-valve iya kutshintshwa, iiparitha zesayizi ezilandelayo kufuneka zinikezelwe ukuphepha i-valve ayikwazi ukufakwa, okanye ifakwe, okanye indawo ayanele ngenxa yokungahambelani kwabenzi be-valve, okanye imigangatho eyahlukeneyo esetyenzisiweyo, okanye isakhiwo sevalve eyahlukileyo.
Njengesixhobo esincedisayo senkqubo yokuvelisa amandla obushushu benkunkuma ye-sement kiln, ukhetho lwevalvu kunye nokufakelwa kwevalve yobushushu obuphezulu kubaluleke kakhulu ekusebenzeni okukhuselekileyo, okunoqoqosho kunye nokusebenza kakuhle kwenkqubo yokuvelisa amandla obushushu benkunkuma, nangona incinci ngobungakanani kunye nexabiso. . Ivalve yobushushu obuphezulu benkqubo yokuvelisa amandla obushushu benkunkuma yeziko lesamente yahlukile kuleyo yeplanti yamandla obushushu ngokubanzi. Akukho zingxaki zokuguqulwa kobushushu obuphezulu kunye nokunxiba kothuli lwepleyiti ebanzi kwiplanti yamandla obushushu. Ngokubanzi usebenzisa i-Q235 yentsimbi yokuwelda, kwaye ubukhulu bubhityile kakhulu, ubukhulu becala bungaphantsi kwe-6mm. Ukuba le valve ikwasetyenziswa kwinkqubo yokuvelisa amandla obushushu inkunkuma, ibopheleleka ukuba ibangele deformation yepleyiti ebanzi, ixinge, isantya sokuvuza i-bypass inkulu, ichithe uninzi lwemithombo yerhasi yokukhupha ngaxeshanye, ukusebenza kommiselo kubi. Ivalve ye-SP yesithando somlilo rhoqo
Njengesixhobo esincedisayo senkqubo yokuvelisa amandla okushisa kwenkunkuma ye-sement kiln, i-valve ye-flue ephezulu yokushisa ibaluleke kakhulu ekusebenzeni okukhuselekileyo, uqoqosho kunye nokusebenza ngokufanelekileyo kwenkqubo yokuvelisa amandla okushisa ukushisa, nangona incinci ngobuninzi kunye nexabiso. Ivalve yobushushu obuphezulu benkqubo yokuvelisa amandla obushushu benkunkuma yeziko lesamente yahlukile kuleyo yeplanti yamandla obushushu ngokubanzi. Akukho zingxaki zokuguqulwa kobushushu obuphezulu kunye nokunxiba kothuli lwepleyiti ebanzi kwiplanti yamandla obushushu. Ngokubanzi usebenzisa i-Q235 yentsimbi yokuwelda, kwaye ubukhulu bubhityile kakhulu, ubukhulu becala bungaphantsi kwe-6mm. Ukuba le valve ikwasetyenziswa kwinkqubo yokuvelisa amandla obushushu inkunkuma, ibopheleleka ukuba ibangele deformation yepleyiti ebanzi, ixinge, isantya sokuvuza i-bypass inkulu, ichithe uninzi lwemithombo yerhasi yokukhupha ngaxeshanye, ukusebenza kommiselo kubi. Ivalve ye-SP ye-bypass yesithando somlilo kuyo yonke i-1% yokuvuza komoya, imveliso yombane yehla nge-0.6%, ngoko ke kufuneka ilawulwe ngokungqongqo, iimfuno zoyilo lwe-bypass ebanzi yokuvuza kweqondo le-1%, ubukhulu becala akufanele budlule i-1.5%, kodwa imeko yokwenyani inkulu kakhulu kune-1.5%, ezinye zide ziye kuthi ga kwi-5%. Ukonyuka kwezinga lokuvuza kwevalve ye-AQC ye-furnace bypass kuya kunciphisa umgangatho wegesi yombane.
Ngokhuphiswano oluya lusanda kwimarike yokubonelela ngenkunkuma yesamente ivelufa yokuvelisa amandla obushushu, njengemveliso engeyiyo eyomgangatho, umgangatho wemveliso yevalve yobushushu obuphezulu ayilingani, kwaye ezinye ziya kuthi ngabom zibhitye ubukhulu bomzimba obanzi kunye nepleyiti ebanzi. . Nokuba enye i-shaft ebanzi yintsimbi yebhoyila engama-20, ixesha elide liya kuba nomhlwa lide life. Ngenxa yesikhundla esiphezulu sofakelo, umjikelezo wokuvelisa ixesha elide kunye neendleko eziphezulu zokuthutha i-valve yegesi yokukhupha, iindleko zokutshintsha i-valve zikhulu kakhulu, ngoko kufuneka zikhethwe ngokwenkqubo yezobuchwepheshe yevalve [1]. Ngoku umbhali kwinani lenkunkuma yokuvelisa ubushushu inkqubo ufakelo ivalvu namava nokugcinwa. Isishwankathelo sokukhethwa kwevalve kunye nofakelo.
I-1, ukhetho lwevalvu yobushushu obuphezulu
1.1 ivalve yomlilo ye-AQC
(1) ivalve yokungena
Ivalve yokungena ibekwe phakathi kwendawo yokuphuma kunye negumbi lokuhlalisa lesipholisi segrate. Kuyimfuneko ukuba i-valve ibe nokusebenza kakuhle kokulawula kunye nokusebenza okuthembekileyo ukulungelelanisa umthamo womsi wokuphuma kwe-cooler grate. Ukuveliswa kobushushu benkunkuma ngokuqhelekileyo kuqhutyelwa phambili kwi-cooler ye-grate. Ubushushu boyilo yi-300 ~ 360 ℃, kwaye inokufikelela ngaphezulu kwe-450 ℃ xa ubushushu buphezulu. Ngelo xesha, i-gas medium of grate cooler iqulethe uthuli lwe-clinker kunye ne-concentration engekho ngaphezu kwe-30mg / m3 (eqhelekileyo). Isantya ngokubanzi 8 ~ 15m/s. Amandla e-scour kwipleyiti yevalve makhulu kakhulu. Ngoko ke, ipleyiti ye-valve iyadingeka ukuba ibe nokuchasana okulungileyo kwiqondo lokushisa eliphezulu ukuphucula ubomi benkonzo yevalve.
Ivalve inokukhethwa ngeenxa zonke okanye isikwere ngokwemeko yangempela, apho iqondo lokushisa lizinzile kakhulu, kwaye ubukhulu bebhedi epholileyo ye-grate buchaphazela ngokuthe ngqo ukutshintshwa kweqondo lokushisa kwegesi yokukhupha. Ngokomsebenzisi, ubushushu apha bumalunga ne-450℃ ixesha elide, kodwa ngamanye amaxesha malunga ne-650℃, kwaye inokugcinwa malunga ne-2h. Iipleyiti ze-valve ezinobushushu boyilo ≤450℃ ziya kwenziwa nge-16Mn okanye iNombolo ye-20 yensimbi yebhoyili. Iipleyiti zeValve ezinobushushu boyilo ≥600℃ zenziwe nge-304 yentsimbi engenasici. Izixhobo ezibini zepleyiti yevalve kubushushu obuphezulu beempawu zoomatshini phantse akukho, singasathethi ke ngokumelana nokunxiba kakuhle. Ngokutyelela indawo kunye nempendulo yomsebenzisi, siyazi ukuba xa izinga lokushisa lingagqithisi uluhlu loyilo, ubomi benkonzo jikelele buyiminyaka eyi-1-2, ukuba izinga lokushisa lidlula uluhlu loyilo, ubomi benkonzo ** isiqingatha sonyaka. Ke ngoko, ipleyiti yevalve kufuneka isebenzise i-welding degree tortoiseshell mesh, inaliti eguquguqukayo enamandla obushushu obuphezulu, inqanaba lobushushu elisezantsi lokunyuka, ukwanda okuncinci kwe-thermal, ukuchasana okunamandla nokhukuliseko lweekhemikhali, ukuxhathisa ukothuka kwe-thermal kunye nezinye izibonelelo zenaliti ye-flexural, emva kokubhaka okuphezulu kobushushu. unyango lunamandla okumelana nobushushu obuphezulu kunye nokumelana nokunxiba, ukwandisa ubomi benkonzo. Ukukhuselwa kwemitha yobushushu kunokufezekiswa ngokwandisa i-yama shaft kunye nokuwelda ipleyiti yentsimbi encinci phakathi kwe-actuator kunye nevalve yokudibanisa intonga.
Ukukhetha ivalvu:
Ifom yesakhiwo: uhlobo lwe-louver;
Ifom yokudibanisa: i-welding ye-butt, i-flange;
Izinga lokuvuza: 1.5% ~ 2%;
Uxinzelelo oluphakathi olufanelekileyo: 0.1MPa;
Izinto zomzimba: Inombolo ye-20 yensimbi ye-boiler yensimbi yokufakelwa ubushushu kunye nobushushu obuphezulu kunye nokunxiba izinto zokuchasana nenaliti ye-torsion;
Umgangatho wepleyiti yeValve: No.
Isixhobo se-Yan shaft: 2crl3, i-304 yensimbi engenasici.
Ubunzima be-castable kufuneka buboniswe kumenzi we-valve ukuba umbhobho uhlanganiswe ngezinto eziguquguqukayo zokuzalisa. Ukuze uthintele ivalve efakwe emva kokuba ipleyiti yevalve ibethe imathiriyeli yokutofa kombhobho kwaye ayinakuvulwa. Umzimba we-VALVE uya kugqunywa ngobungqingqwa obufanayo bokugquma kunye nezinto eziguquguqukayo ezimelana ne-abrasion njengombhobho. Inzuzo yale nto kukuba ukuhamba akukho kuphazamiseka. Kuphephe ukujikeleza okukhulu komzimba kunye nediski ngegesi ephumayo. I-thermal insulation layer kunye ne-feed-resistant flexure feed inciphisa ubushushu bobushushu bomzimba wevalvu.
(2) Ivalve yokudlula kunye nevalve yomoya ebandayo
Ivalve ye-bypass ibekwe phakathi komsila we-grate epholileyo kunye ne-electrostatic precipitator, kwaye ivalve yomoya ebandayo iphambi kwegumbi lokuhlalisa umoya obandayo. Ubushushu bomoya obushiyekileyo bentloko ye-kiln buguquguquka kakhulu (180 ~ 500 ℃), ixesha lokuguquguquka lifutshane, kwaye ivalve elawula i-bypass isebenza rhoqo. Xa ukuveliswa komphunga wentloko ye-oven kukhulu kakhulu, ubushushu bobushushu obuphezulu buyancipha, kwaye i-bypass elawula i-Yan ivuliwe ukunciphisa umthamo womsi webhoyila kwintloko ye-oven. Qinisekisa uzinzo lwenkqubo. Nangona iqondo lobushushu le-AOC ye-bypass yokuphuma kwegesi yomlilo aliphezulu, izinga lokuvuza kwepleyiti yevalvu liyenyuka emva kokuba ikhukulwe kwaye inxitywe luthuli lwe-clinker. Kwiimeko ezinzima, ipleyiti yevalve iya kuwa, kubangele ukuvuza okunzulu komoya kwinkqubo, okukhokelela ekunciphiseni ukuphuphuma kwesithando somlilo se-AOC. Xa ubushushu bomsi ongenisiweyo buphezulu kakhulu, umoya obandayo wongezwa kwigumbi lokumisa ngevalve yomoya obandayo. I-valve ayiyi kuguga, kodwa izinga lokuvuza likhulu, eliya kunciphisa umgangatho wegesi ye-flue. Ngoko ke, ezi zivalo zimbini zifuna ukutywinwa okulungileyo.
Ifom yesakhiwo: ipleyiti enye, uhlobo lwe-louver;
Ifom yokudibanisa: i-welding ye-butt, i-flange;
Izinga lokuvuza: ipleyiti enye 1%, uhlobo lwe-shutter 1.5% ~ 2%;
Uxinzelelo oluphakathi olufanelekileyo: 0.1mpa;
Ubushushu benkonzo: ≤450℃;
Izinto eziphathekayo: Inombolo ye-20 yensimbi yebhoyili;
Umgangatho wepleyiti yevalve: 16Mn;
Isixhobo se-valve shaft: 20Crl3.
Kucetyiswa ukuba kusetyenziswe ipleyiti yevalve yepleyiti enye (inqanaba lokuvuza lohlobo lwesivalo liphezulu), kunye nokuphucula ukuchaneka kokusetyenzwa, izinga lokuvuza lilawulwa ngaphakathi kwe-1%, ivalve yokudlula kufuneka yomeleze ukuxhathisa ukunxiba kunye nokumelana nomhlwa, ukunciphisa umoya odlulayo. ukuvuza umthamo xa ibhoyila isebenza.
(3) ivalve yokuphuma
Ivalve yokuphuma ibekwe phakathi kweziko kunye ne-electrostatic precipitator, apho ubushushu berhasi yokukhupha bungaphantsi kwama-360 ℃, ukuguquguquka kweqondo lobushushu kuncinci, ukunxitywa kothuli buthathaka, kwaye ivalve yokuvula nokuvala incinci. Kwiimeko eziqhelekileyo, kukwimeko evulekileyo, xa ukugcinwa kwesithando somlilo se-AQC, i-valve ivaliwe. Ivalve ifuna ukusebenza kakuhle kokutywinwa xa ivaliwe ukuqinisekisa ukugcinwa kwebhoyila kunye nokhuseleko lwabasebenzi.
Ifom yevalve: faka ipleyiti;
Ifom yokudibanisa: i-welding ye-butt, i-flange;
Izinga lokuvuza: ≤0.5%;
Uxinzelelo oluphakathi olufanelekileyo: 0.1Mpa;
Ubushushu benkonzo: 330 ~ 450 ℃;
Izinto eziphathekayo: Inombolo ye-20 yensimbi yebhoyili;
Umgangatho wepleyiti yevalvu: 16Mn:
Isixhobo se-valve shaft: 20Crl3.
Ivalve iyilwe njengesakhiwo sevalve yeplagi, isixhobo sokuhambisa sisebenzisa uhlobo lwe-sprocket, ukuphepha ivalve ngenxa yokuqokelelana kothuthu okubangelwa kukuvulwa kwevalve yevalve kunye nokuvala ipleyiti yevalve, ukugoba kwesikhondo okanye ukutshisa ukusilela kombane we-actuator. Kufuneka kuqatshelwe ukuba iseti yevalve yeplagi ye-manual kunye ne-impeller feeder eqinile kufuneka ibekwe phakathi kwegumbi lokuhlala kunye nomatshini woziphu ukuphepha ubuninzi bothuli oluqokelelwe ngexesha lomsebenzi wokumisa kwibhoyila. Apha iqondo lobushushu liphezulu ngokwentelekiso ukuya kuthi ga kwi-450℃, ngoko ke umzimba wevalve ye-impeller feeder kunye nemowudi yoqhagamshelo lwemoto idityaniswe ngokudityaniswa, ukuze kuthintelwe umgqomo ukuba ungaweli kumzimba wangaphandle obambeke kwi-impeller yokulayisha. Kwimoto yokutshisa, isixhobo sokukhusela esomileyo sisetyenziselwa ukubuyisela ipini yokhuseleko kwimveliso. Ngelo xesha, igobolondo engaphezulu kwe-impeller ixhotyiswe ngemingxuma yokuhlola, i-valve shaft yandiswa, i-bearing ingaphandle, kwaye i-refueling hole yongezwa, ukuze kuncitshiswe impazamo ebangelwa yizinto ezinamathele kunye nokushisa okuphezulu.
(4) ivalve yesifudumezisi esikhulu
Ivalve yehiatha enkulu idla ngokusetwa phakathi kwesiphelo sangaphambili segridi epholileyo kunye neheater enkulu, apho ubushushu berhasi yokukhupha budla ngokuba yi-500~650℃, kwaye umxholo wothuli yi-30mg/m3(umgangatho). Okwangoku, isebe loyilo longeza uyilo oluncinci lweheater.
Uyilo oluqhelekileyo lwevalve lugxothiwe, ipleyiti yevalve yintsimbi engama-304. Ngokwabasebenzisi, iqondo lobushushu apha ligcinwa kakhulu kwi-650 ℃, kwaye kwiimeko ezininzi, linokufikelela kwi-900 ℃. Ngenxa yokuba ivalve iphantsi kobushushu berhasi, ukubola kunye nokhukuliseko kubi kakhulu. Ubomi benkonzo obufutshane kakhulu. Ke ngoko, umzimba wevalvu kufuneka ugalelwe ngezinto zokugquma ubushushu kwaye ugalelwe ubukhulu obufanayo nombhobho ukuze kuqinisekiswe ukuba ukuhamba komoya akuphazamiseki. Umgangatho wepleyiti yevalve uphantsi ngokwentelekiso, kwaye i-304 enecala eliphindwe kabini le-welding igobolondo legobolondo kufuneka isetyenziselwe ukuphosa ubushushu obuphezulu kunye nokunxiba ukuxhathisa okuphoswayo ukuze kuqinisekiswe ukusebenza okulawulwayo kwevalve kunye nokusebenza okuqhelekileyo komgca wokuvelisa ikhonkco.
Ifom yevalve: uhlobo lwe-louver;
Ifom yokudibanisa: i-welding ye-butt, i-flange;
Izinga lokuvuza: 1.5% ~ 2%;
Uxinzelelo oluphakathi olufanelekileyo: 0.1MPa;
Ubushushu benkonzo: 450 ~ 650 ℃;
Umzimba wezinto eziphathekayo: Inombolo ye-20 yensimbi ye-boiler yensimbi yokugquma ubushushu kunye nobushushu obuphezulu kunye nokunxiba ukumelana nokuphosa;
Ipleyiti yeValve: I-304 yensimbi engenasici efakwe ubushushu obuphezulu kwaye inxibe i-castable resistant;
Isixhobo se-Fujian shaft: I-304 yentsimbi engenasici.
Ixesha lokuposa: Oct-09-2022
