1. Axial Force Generation thiab Balancing Principles

Cov axial rog inmultistage  ntsug turbine twj tso kua mis  feem ntau yog tsim los ntawm ob lub ntsiab lus:

● Centrifugal quab yuam tivthaiv:Cov kua dej radial ntws vim yog lub zog centrifugal tsim lub siab sib txawv ntawm lub hauv ntej thiab nraub qaum npog ntawm lub impeller, uas ua rau lub zog axial (feem ntau yog coj mus rau qhov nqus inlet).

● Cov nyhuv siab sib txawv:Qhov sib txawv ntawm qhov sib txawv ntawm txhua theem ntxiv ua rau lub zog axial.

Txoj kev sib npaug:

● Symmetrical impeller kev npaj:Siv ob-suction impellers (kua nkag los ntawm ob sab) txo qhov sib txawv ntawm qhov sib txawv, txo qis axial quab yuam kom tau txais qib (10% -30%).

● Ntsuas qhov tsim:Radial los yog oblique qhov nyob rau hauv lub impeller rov qab cover redirect high-pressure kua rov qab mus rau lub inlet, ntsuas qhov sib txawv siab. Qhov loj me yuav tsum tau ua kom zoo dua los ntawm kev suav cov dej dynamics kom tsis txhob ua haujlwm poob.

● Rov qab hniav tsim:Ntxiv cov hniav rov qab (piv txwv li cov hniav loj) nyob rau theem kawg ua rau lub zog centrifugal los tiv thaiv axial loads. Feem ntau siv nyob rau hauv lub taub hau siab twj tso kua mis (piv txwv li, multistage verticalturbinepumps).

2. Radial Load tiam thiab sib npaug

Radial loads pib los ntawm inertia rog thaum lub sij hawm kev sib hloov, tsis sib npaug ntawm cov kua dynamic siab tis, thiab residual imbalance nyob rau hauv rotor loj. Accumulated radial loads nyob rau hauv ntau theem twj tso kua mis tuaj yeem ua rau cov kabmob overheating, vibration, lossis rotor misalignment.

Balancing Strategies:

● Impeller symmetry optimization:

o Cov hniav sib txawv (xws li, 5 hniav + 7 hniav) faib cov radial rog sib npaug.

o Dynamic ntsuas kom ntseeg tau tias txhua lub impeller lub centroid sib haum nrog cov axis rotational, txo qis qhov seem tsis txaus.

● Structural reinforcement:

o Rigid intermediate bearing vaj tse txwv tsis pub hloov radial.

o Cov kabmob sib xyaw ua ke (xws li, ob-kab thrust pob bearings + cylindrical roller bearings) tuav axial thiab radial loads nyias.

● Hydraulic them nyiaj:

o Qhia vanes los yog rov qab chambers nyob rau hauv impeller clearances optimize flow paths, txo lub zos vortices thiab radial zog fluctuations.

3. Load Transmission nyob rau hauv Multi-Stage Impellers

Axial rog sib sau ua ntu zus thiab yuav tsum tau tswj kom tsis txhob muaj kev ntxhov siab ntau:

● Theem-wise balancing:Txhim kho qhov sib npaug disk (piv txwv li, hauv ntau theem centrifugal twj) siv axial sib txawv siab sib txawv kom tau txais kev kho axial rog.

● Kev ua kom zoo tawv nqaij:Cov twj tso kua mis yog ua los ntawm cov hlau muaj zog (piv txwv li, 42CrMo) thiab siv tau los ntawm finite element tsom xam (FEA) rau deflection txwv (feem ntau ≤ 0.1 mm / m).

4. Kev Tshawb Fawb Txog Kev Tshawb Fawb thiab Kev Tshawb Fawb Txog Kev Tshawb Fawb

Piv txwv li:Lub twj tso kua mis tshuaj multistagevertical turbine (6 theem, tag nrho lub taub hau 300 m, ntws tus nqi 200 m³ / h):

● Axial quab yuam xam:

o Initial design (Ib leeg-suction impeller): F=K⋅ρ⋅g⋅Q2⋅H (K=1.2−1.5), ua rau 1.8 × 106N.

o Tom qab hloov mus rau ob-suction impeller thiab ntxiv qhov sib npaug: Axial quab yuam txo mus rau 5 × 105N, ua tau raws li API 610 tus qauv (≤1.5 × rated zog torque).

● Radial load simulation:

o ANSYS Fluent CFD qhia txog qhov siab tshaj plaws hauv zos (txog 12 kN / m²) hauv cov impellers tsis zoo. Taw qhia cov vanes txo qhov siab tshaj plaws los ntawm 40% thiab bearing kub nce los ntawm 15 ° C.

5. Cov qauv tsim thiab kev txiav txim siab tseem ceeb

● Axial quab yuam txwv: Feem ntau ≤ 30% ntawm lub twj tso kua mis lub zog tensile, nrog rau qhov kub thiab txias ≤ 70 ° C.

● Impeller clearance control: Khaws nruab nrab ntawm 0.2-0.5 mm (me me dhau ua rau muaj kev sib txhuam; loj dhau ua rau cov pa taws).

● Kev ntsuam xyuas Dynamic: Kev ntsuas ntsuas ntsuas nrawm nrawm (G2.5 qib) ua kom muaj kev ruaj ntseg ua ntej ua haujlwm.

xaus

Sib npaug axial thiab radial loads inmultistage ntsug turbine twj yog ib qho kev sib tw tshuab engineering nrog rau cov dej dynamics, mechanical design, thiab material science. Optimizing impeller geometry, integrating balancing devices, thiab precision manufacturing processes ho txhim khu lub twj tso kua mis kev cia siab rau thiab lifespan. Kev nce qib yav tom ntej hauv AI-tsav cov lej simulations thiab kev tsim khoom ntxiv yuav ua rau tus kheej tsim impeller thiab dynamic load optimization.

Nco tseg: Customized design for specific applications (eg, fluid properties, speed, temperature) yuav tsum ua raws li cov qauv thoob ntiaj teb xws li API thiab ISO.