Umnyombo wokukhetha abalandeli bezimayini usekumthamo womoya, umfutho womoya, ukusebenza okuvikela ukuqhuma, ukusebenza kahle okuphezulu, ukungadingeki kwezokuphepha, ukuhlehla komoya, kanye nokufanisa umjikelezo ogcwele wezimo zokusebenza kwemayini.
1. Izimo zepharamitha eziyinhloko (kufanele zibalwe)
1. I-Axial Flow Fan fan ivolumu yomoya Q (m³/min noma m³/h)
Isisekelo sokubala: Bala isamba somthamo womoya odingekayo wezimayini (okuhlanganisa abasebenzi, igesi, uthuli, ukuqhuma, okokusebenza kukagesi nokomshini, njll.) ngokuvumelana ne-“MT/T 634—2019”.
Izidingo zokukhetha:
I-ventilator eyinhloko: Ivolumu yomoya elinganiselwe ≥ Ingqikithi yomthamo womoya odingekayo wezimayini × (1.05 - 1.1) (ukuvuza, umkhawulo wokugcina).
I-ventilator yendawo: Ivolumu yomoya elinganiselwe ≥ Ivolumu yomoya ebaliwe yobuso bokumba × 1.1.
Ukumboza wonke umjikelezo: isikhathi sokungena komoya esilula, isikhathi esinzima, isigaba sokuqala sokufinyelela umthamo wokukhiqiza, kanye nokunwetshwa kamuva.
2. Imayini i-axial flow fan air pressure P (Pa, ukucindezela okuphelele)
Isisekelo sokubala: Isamba sokumelana nokukhipha umoya emayini (ukumelana nokungqubuzana + ukumelana nendawo) + umthelela wengcindezi yomoya yemvelo.
Izidingo zokukhetha:
I-ventilator eyinhloko: Ukucindezela okuphelele okulinganiselwe ≥ Ukumelana nokuphefumula okuphezulu × (1.3 - 1.35) (thatha umkhawulo ongaphezulu wezimayini zokumelana okuphezulu).
I-ventilator yendawo: Ukucindezela okuphelele okulinganiselwe ≥ Ukumelana okuphelele kwepayipi lomoya × 1.2.
Ukufaniswa kwe-axial / centrifugal:
Ukumelana okuphansi (< 1500 Pa), umthamo womoya omkhulu: Uhlobo lokugeleza kwe-Axial (okubalulekile kokugeleza kwe-axial inter-shaft).
Ukumelana okuphezulu (> 3000 Pa), imayini ejulile: Uhlobo lwe-Centrifugal.
Ukumelana okumaphakathi, indlela yomoya eyinkimbinkimbi: Uhlobo lokugeleza okuxubile.
3. I-Axial Flow Fan fan ukusebenza kahle η
Ukusebenza okuphezulu kakhulu kwe-ventilator eyinhloko ≥ 70%, futhi indawo yesimo sokusebenza kufanele ibe ngaphakathi kwendawo esebenza kahle kakhulu.
Beka kuqala izinhlobo ezonga amandla (njengokugeleza kwe-axial phakathi kweshaft, ukulawulwa kwesivinini esishintshashintshayo).
4. Imayini ye-axial flow fan amandla angu-N (kW)
Kubalwe ngokusekelwe kumthamo womoya, umfutho womoya, nokusebenza kahle: N=
60 × 1000 × η Umshini
×η Ukudluliselwa
Sicela unikeze umbhalo odinga ukuhunyushwa ngokunembile nangokushelelayo kuwo
Q×P
Sicela unikeze umbhalo odinga ukuhunyushwa ngokunembile nangokushelelayo kuwo
。
Amandla emoto kufanele abe ne-margin engu-10% - 15%, futhi amamotho ashintshashintshayo (awonga amandla futhi ashintshe isivinini) kufanele akhethwe.
Abalandeli abakhulu abanomthamo omkhulu bangahlonyiswa ngamamotho amabili / ama-synchronous motors.
II. Izimo zokuphepha nezingaqhumi (Kuyimpoqo)
1. Ibanga elingaqhumi (impoqo ezimayini zamalahle)
Izimayini zegesi: ExdⅠ (uhlobo lwezimayini olungaqhumi).
Izimayini zegesi ephezulu / eziqhumayo: I-ExdⅠMb, futhi ifakwe ama-anti-static impeller kanye nesakhiwo esingenayo inhlansi.
Zonke izingxenye zenjini, isilawuli sikagesi, nebhokisi lokuhlangana azikwazi ukuqhuma. Impahla engaqhumi inqatshelwe ngokuphelele ukungena emayini.
2. Ukungadingeki kwezokuphepha (kuphoqelekile kuma-ventilators amakhulu)
Amasethi amabili ama-ventilators anomthamo ofanayo ahlinzekwa kushafti yomoya ngayinye (eyodwa esetshenziswayo neyodwa njengesipele), anemodeli efanayo kanye nokucaciswa okufanayo.
Umshini wokusekelayo uqala phakathi nemizuzu eyi-10.
Ama-ventilator endawo / amaqembu afaka umoya akufanele asetshenziswe njengama-ventilators ayinhloko.
3. Amandla okukhipha umoya ahlehliselwe emuva (okuphoqelekile)
Kufanele kufakwe umshini wokungenisa umoya obuyela emuva, futhi indlela yomoya ingashintshwa phakathi nemizuzu eyi-10.
Ivolumu yokuphefumula komoya ehlehlayo kufanele ibe ngu-≥ 40% wevolumu yomoya evamile.
4. “Okukhethekile Okuthathu kanye Nokhiye Ababili” kuma-ventilators asendaweni
Ama-transformer akhethekile, ukushintshwa okukhethekile, izintambo ezikhethekile; Ilokhi yamandla omoya, ukukhiya amandla egesi.
Ipayipi lomoya: linganqamuki ilangabi, i-anti-static, enezinga lokuvuza ≤ 5%.
III. Imayini ye-Axial Flow Fan Mine Izimo Zokusebenza kanye Nezimo Zemvelo
1. Ukumataniswa kwamayini ngomjikelezo ogcwele
Ukumboza ivolumu yomoya / izinguquko zomfutho womoya wezinga lokuqala, izinga lesibili, nesigaba sokunwetshwa.
Umehluko emigodini yevolumu elinganayo mkhulu, futhi impilo yesevisi yinde. Khetha uhlobo ngezigaba.
2. Umfutho womoya wemvelo
Uma ukujula komthombo kungu> 400m noma umehluko wobude esihlokweni somthombo ungaphezulu kuka-150m, faka ingcindezi yomoya yemvelo (±).
3. Ukuvumelana nezimo zemvelo
Uthuli oluphezulu: ama-impellers amelana nokugqokwa, ukuvala okuvikela uthuli.
Okuswakama / okonakalisayo: i-anti-corrosion coating, insimbi engagqwali.
Umsindo: idizayini enomsindo ophansi, i-muffler, ngokuhambisana nezindinganiso zokuhlanzeka kwezimboni.
IV. Izimiso Zokukhetha Nezinyathelo
Bala ivolumu yomoya edingekayo: bala ingqikithi yevolumu yomoya ngokuya nge-MT/T 634—2019, kanye nemajini.
Bala ukuphikiswa okuphelele: bala ukuphikiswa okuphezulu ngesikhathi esilula/esinzima sokungenisa umoya, kanye nomphetho.
Khetha uhlobo: ukugeleza kwe-axial (umthamo omkhulu womoya, ukumelana okuphansi), i-centrifugal (ukumelana okuphezulu), ukugeleza okuxubile (ukumelana okuphakathi).
Hlola ijika lokusebenza: indawo yokusebenza kufanele iwe endaweni esebenza kahle, shiya imajini engu-5° ye-engeli ye-axial flow blade, futhi isivinini se-centrifugal kufanele sibe ≤ 90% wesivinini esiphezulu.
Khetha injini: i-explosion-proof, ukufanisa amandla, ukubaluleka kwamafrikhwensi aguquguqukayo.
Ukuqinisekisa ukuphepha: ukuhlehla komoya, ikhophi yasenqolobaneni, okukhethekile okuthathu nokukhiya okubili, isitifiketi sokuvikela ukuqhuma.
Ukuqhathanisa kobuchwepheshe nezomnotho: ukusebenza kahle, ukusetshenziswa kwamandla, ukunakekelwa, kanye nesikhathi sokuphila kulungiselelwa ngokugcwele.
