Subway tunnel kiv cua kom huab cua txav thaum lub neej nyob ntawm nws. Lawv tsis yog cov khoom siv thaub qab-lawv yog thawj kab ntawm kev tiv thaiv cov pa taws, cua sov, thiab muaj kuab lom thaum muaj xwm txheej ceev. Peb tau teeb tsa, sim, thiab tua teeb meem SAVWIAV KUB KUB systems nyob rau hauv 12 metro tej yaam num thoob plaws Tuam Tshoj thiab Southeast Asia. Hauv ib qho kev txuas ntxiv hauv Beijing, tus kiv cua ua tsis tiav tau ua rau 47 feeb ntawm qhov cua kub ceev qeeb thaum lub sijhawm simulated tua hluav taws - lub sijhawm txaus rau CO theem hla 300 ppm kev nyab xeeb pib. Qhov xwm txheej ntawd hloov kho li cas peb qhia, sim, thiab ua haujlwm rau cov haujlwm no.
Vim li cas Standard Kiv cua tsis nyob hauv av
Feem ntau cov kiv cua muaj kev sib tsoo nyob rau hauv subway tej yam kev mob - tsis yog los ntawm overload, tab sis los ntawm mismatched tsim lub hom phiaj. Lub hom phiaj axial kiv cua tuaj yeem txav 120,000 m³ / h ntawm 500 Pa static siab ntawm daim ntawv. Tab sis underground? Nws ntsib 85% av noo ib xyoos ib zaug, huab cua chloride-laden nyob ze ntawm ntug hiav txwv tunnels, kev co los ntawm kev hla kev tsheb ciav hlau (txog 12 Hz ntawm 0.8 hli amplitude), thiab xoom npoo rau thermal drift. Peb tau pom cov motors overheat nyob rau hauv 90 hnub vim hais tias rwb thaiv tsev chav F tau teev - tab sis ambient qhov kub tsis tu ncua ntaus 52 ° C thaum lub caij ntuj sov ua haujlwm.
Lub ntsiab lus tsis ua haujlwm tiag tiag tsis yog airflow - nws yog kev cia siab nyob rau hauv kev ntxhov siab. Peb qhov yuav tsum tsis txhob sib tham sib cais subway-qib chav nyob los ntawm cov khoom lag luam catalog:
- Cov ntaub ntawv pov thawj tawg (GB 3836.1-2021) rau thaj chaw methane-nrhiav lossis roj teeb-tunnel interfaces
- Nruam-lub luag hauj lwm IP55+ ingress tiv thaiv, nrog silicone-sealed bearings thiab stainless-steel fasteners
- Dynamic balance qib G2.5 lossis zoo dua, txheeb xyuas ntawm 110% ntawm max kev khiav hauj lwm ceev - tsis yog ntsuas ceev xwb
Yog tsis muaj tag nrho peb, kev saib xyuas lub voj voog poob qis los ntawm 60%. Ib tus neeg siv tau hloov cov kiv cua txhua 14 lub hlis kom txog thaum hloov mus rau counter-rotating axial designs nrog dual ywj siab windings. Lawv lub sijhawm tshiab: 47 lub hlis.
FBD Series: Ua rau Qhov Qhov Tseeb, Tsis Yog Lab Ntawv
FBD series (dⅠ) explosion-proof pressure-injection counter-rotating axial flow local ventilation fan daws cov txheej txheem tunnel kiv cua tsis quav ntsej: kev tswj xyuas thiab cov lus teb ib ntus. Nws ob-theem rotor sib dhos - pem hauv ntej thiab nram qab impellers rotating nyob rau hauv opposite lus qhia - xa 22% siab static efficiency tshaj ib-theem sib npaug ntawm tib 1,800 Pa siab nce. Qhov tseem ceeb tshaj, nws ua tiav tag nrho airflow hauv 2.3 vib nas this ntawm kev pib. Qhov ntawd tseem ceeb thaum kuaj pom cov pa luam yeeb ua rau lub qhov cua ua ntej pom kev poob qis dua 10 meters.
Peb tsis tsuas yog hais specs-peb validate lawv. Txhua chav FBD tau dhau los:
- 48-teev ntsev-spray kuaj (ISO 9227) ntawm 5% NaCl concentration
- Kev vibration endurance ntawm 15 g ncov acceleration rau 10 lab cycles
- Thermal runaway simulation: lub cev muaj zog windings rhuab mus rau 180 ° C, ces txias sai heev rau -20 ° C - rov 200 zaug
Qhov no tsis yog over-engineering. Nws yog qhov sib txuam kho vajtse rau lub hnab ntawv ua haujlwm. Thaum hluav taws kub hnyiab 600 ° C, cov kiv cua nyob ze yuav tsum muaj sia nyob tshav kub ntev txaus kom tshem tawm txoj kev khiav. FBD units tau dhau 90-feeb kev kuaj pom ntawm 750 ° C saum npoo qhov kub thiab txias yam tsis muaj cov qauv deformation.
Customization tsis xaiv tau - Nws yuav tsum tau los ntawm Physics
"Off-the-shelf" tsis muaj rau cov kiv cua subway. Qhov txoj kab uas hla, gradient, tsheb ciav hlau zaus, thiab hluav taws kub load profile dictate kiv cua geometry, tsis yog lag luam daim ntawv qhia. Ib qhov 5.8 m txoj kab uas hla nrog 3% gradient xav tau cov hniav sib txawv thiab hub piv dua li 4.2 m ca-section bore - txawm tias ob leeg xav tau 150,000 m³ / h.
Peb pib txhua qhov project nrog cov ntaub ntawv sau-tsis yog kev xav. Peb cov engineers ntsuas:
- Ambient particulate density (PM₁₀ thiab PM₂.₅) dhau 72 teev
- Baseline CO₂ thiab NOₓ concentrations thaum lub sijhawm ua haujlwm siab tshaj
- Cov dej hauv av seepage tus nqi ntawm cov kiv cua chamber qhov chaw
Cov ntaub ntawv ntawd ua rau kev txiav txim siab tsis muaj daim ntawv qhia tshwj xeeb tuaj yeem: seb puas yuav siv titanium alloy hniav (rau cov tshuaj tiv thaiv chloride), seb puas yuav embed thermocouples nyob rau hauv lub cev muaj zog windings (rau kev kwv yees kaw), los yog seb puas yuav integrate CAN tsheb npav kev sib txuas lus rau lub sij hawm raws li txoj cai qhia rau SCADA. Ib qhov chaw Guangzhou Kab 11 tau thov cov kiv cua centrifugal corrosion-resistant nrog Hastelloy C-276 casings-vim av pH ntsuas 3.2. Standard carbon steel yuav corroded los ntawm 11 lub hlis.
Saib Dua Tus Ntxuam—Saib qhov System
Lub subway qhov ntxuam tsuas yog zoo li nws kev koom ua ke. Peb tau pom cov kiv cua sab saum toj ua tsis tiav vim tias cov hlua txuas txuas tau ntawm 42 Hz - tib zaus raws li dhau 8 lub tsheb ciav hlau. Kev kho tsis yog tus kiv cua tshiab. Nws tau tuned loj dampers welded rau hauv kev txhawb nqa ncej thiab kev sib cais cov ntaub qhwv nrog 0.035 hli deflection kam rau ua.
Kev nyab xeeb tiag tiag los ntawm kev xav hauv lub cev: kev ua qauv dav hlau (siv ANSYS Fluent nrog qhov tseeb geometry), acoustic kho (kom suab nrov qis dua 85 dBA ntawm cov chaw nres tsheb), thiab redundancy architecture (N + 1 configuration nrog tsis siv neeg hloov hauv <1.2 vib nas this). Txhua Zibo Hongcheng SAVWIAV KUB KUB ships nrog torque-slip curves, harmonic distortion reports, thiab electromagnetic compatibility xeem cov ntsiab lus - tsis yog ib tug CE cim.
Kev ntseeg tsis tau tiav hauv lub hoobkas. Nws muaj pov thawj nyob rau hauv qhov av-hnub tom qab hnub, tua hluav taws tom qab tua hluav taws, kaum xyoo tom qab kaum xyoo. Tias yog vim li cas peb tsim rau qhov kev hloov pauv phem tshaj plaws, lub caij ntuj sov kub tshaj plaws, thiab lub zog cuam tshuam ntev tshaj plaws. Vim tias thaum cov pa luam yeeb nyob hauv txoj kev hauv tsev, tsis muaj "zoo txaus." Tsuas muaj qhov ua haujlwm xwb.
