Coal-fired boiler induced draft fan GY4-73 Alamanuia feololo le fiafia wear-resistant and high-temperature resistant
The coal-fired boiler induced draft fan is a core auxiliary equipment in the coal-fired boiler system. Its function is to extract the flue gas produced by the boiler combustion through negative pressure suction, and maintain a suitable negative pressure environment in the furnace to ensure complete fuel combustion and stable boiler operation.
I. Core Working Principle
The induced draft fan creates a negative pressure zone at the fan inlet by the centrifugal force or axial thrust generated by the rotating impeller, drawing the high-temperature flue gas from the furnace through the flue into the fan, and then discharging it through the outlet flue to the chimney (or environmental protection equipment such as desulfurization and denitrification devices).
The furnace negative pressure must be strictly controlled (generally -20 to -50 Pa). Excessive negative pressure can draw in cold air, reducing the boiler’s thermal efficiency, while insufficient negative pressure may cause flame blowout, posing safety hazards.
Types of boiler centrifugal induced draft fans:
1) O le faʻataʻitaʻiga o le ata o loʻo fuafuaina o loʻo fuafuaina e pei o se tasi ituaiga o le ituaiga. Telefoni mai le Numera 8 e Nu. 29.5.
2) O ituaiga uma o le mea e mafai ona gaosia i le itu tauagavale o le itu tauagavale po o le itu taumatau.
3) The outlet position of the fan is indicated by the angle of the casing’s exit.
4) O metotia e avetaavale atu aofia ai: B, i ituaiga mo belt ave taavale; O le ituaiga mo le Confirt Drive; U, f ituaiga mo belt drive.
5) O se faʻataʻitaʻiga o le igoa atoa o le igoa o le igoa lea:
G4-73NO.20DRORT45 tikeri
Y4-73NO.20DLETC0 tikeri
O le mea e fai ai le ata g ma y o le Boiler Stored Fans ma Boiler Inductive Draft Thans faasologa.
Structural features of boiler induced draft fans: Coal-fired boiler induced draft fan
Centriful Fan:
CANT: Faia o le uʻamea ipu, malosi ma faʻatuatuaina, maua i le tuʻufaʻatasia poʻo semi-avanoa ituaiga, ma semi-tatala ituaiga e sili atu le talafeagai mo le tausiga. Fans i lalo o le Numera 14 e le o se mea e tasi, a o na o i luga Nu.1 14 e masani lava semi-tatala.
Impeller:
Drive vaega: o loʻo iai le palu autu, fanauina fale, o loʻo i ai o fatu, ma pukeley (pe faʻafefe).
INLELE: O le maitauina o se foliga foliga mai, fausia se faʻavasegaina o le soʻotaga faʻapopoleina, o loʻo tu i le itu o le fan, ma le curved cron-vaega i luga o le lologa leiloa.
O le faitotoa o le au o le aufaamaina: na faʻapipiʻi i luma o le vaitusi, faʻaaoga e fetuʻunaʻi ai le tele o le ea pe a o le vave saoasaoa (mamafa) tumau pea.
Boiler induced draft fan fault repair Coal-fired boiler induced draft fan
Centrifugal fan drive part wear is a common equipment issue, including blower bearing position, bearing housing wear, and fan shaft bearing position wear. For the above faults of centrifugal fans, traditional repair methods include buildup welding, thermal spraying, and electroplating, but each has certain drawbacks: the high temperature generated by welding produces thermal stress that cannot be completely eliminated, easily causing material damage, leading to component bending or breaking; while electroplating is limited by coating thickness,
Installation matters for boiler induced draft fan Coal-fired boiler induced draft fan
1. O le atoa o le centrifagoul ban iunite e tatau ona tuʻuina saʻo i luga o le faʻavae ma le masani ona faʻaaogaina le faʻaeʻeina
2. Mo le 'Faapipii Lokauti Lose, o le saking luga luga o le faavae e tatau ona puipuia lelei ma le tatau ona maua le malosi pe afaina. Pe a tuʻu le faʻavae i luga o le faʻavae, e tatau ona faasee le faʻaaogaina o le pupuʻu o le pulupulu.
3. O le faʻapipiʻiina o fale e tatau ona faʻamau lelei le faʻavae, ma le maualuga o le tulaga e le sili atu i le 0.2 / 1000, fuaina ma se tulaga o le tau faʻapipiʻi.
4. A o le i storaping le fanaina o atigi, o le axis laina o le rotor e tatau ona fesoʻotaʻi ma le conpending i le va o le laulu i totonu o meafaigaluega.
5. I le taimi o le potopotoga o le faaputuga autu ma le aofia ai o atigi, siaki e tatau ona faia e tusa ai ma faʻamatalaga i masini faʻapitoa. O le kilia i le va o le fanauina o le fanaina ma le atigi pusa e tatau ona tausia i le 0.03 i le 0.04 milimita (fuaina e le lapoa o le fanaua fale).
6. A faʻaputuputu le Fina o le Fina, o le tulaga o le CODE e tatau ona tuʻufaʻatasia i luga o le rotor Axis Center, ma le CODAL COPED i le va o masini faʻapitoa I le taimi lava e tasi, siaki pe ua tapunia le boolts boolts. A faʻapea e le faʻamatalaina le pepa faʻamaonia o mea faigaluega I le taimi o fetuunaiga, taumafai e faʻaitiitia le avanoa o mea faʻatau e faʻaleleia atili ai le lelei. A o ese mai le Fan, o le amio le pulea i le va o le Fan Shaft ma le afi o le afi e le tatau ona sili atu i le 0.05 militeli. Mo Centrifugale Frons ma Blick Bouttings, o le le lelei o le fanauina o pu i luga o le lua o loʻo faʻapipiʻiina pe a maeʻa le rotor.
Zibo Hongcheng Fan Co., Ltd. Faapitoa i le gaosiga o le 50 faasologa ma sili atu nai lo 600 auiliiliga ma faʻataʻitaʻiga o tagata fiafia. O nei oloa e faʻaaogaina lautele i totonu o falefaigaluega e pei o mineli, malala o suauʻu, vaipanoa, kalama, faʻapuʻau, laupapa, laupapa, laupapa, laupapa, ma fale. Faʻatupuina le gaosiga ma le faʻagaioiga e tusa ai ma mea o loʻo avanoa. Afio mai e faʻafesoʻotaʻi mai matou mo le galulue faʻatasi.
