Technical Specifications thiab Engineering Practice Analysis for Installation of Eccentric Reducers at the Inlet of Centrifugal Pumps:

1.Txoj cai rau kev xaiv Installation Direction Lub installation ntawm eccentric reducers nyob rau hauv lub inlet ntawm centrifugal twj yuav tsum ua tib zoo xav txog cov yam ntxwv ntawm cov dej dynamics thiab cov cuab yeej tiv thaiv xav tau kev pab, feem ntau ua raws li lub dual-factor kev txiav txim qauv:

Qhov Tseem Ceeb rau Kev Tiv Thaiv Cavitation:
Thaum lub kaw lus Net Positive Suction Head (NPSH) cov npoo tsis txaus, Kev Taw Qhia Sab saum toj yuav tsum tau txais kev pom zoo los xyuas kom meej tias hauv qab ntawm cov yeeb nkab txuas ntxiv nqis los kom tsis txhob muaj cov kua qaub uas tuaj yeem ua rau cavitation.
Cov Kev Cai Liquid Discharge Requirements:Thaum muaj kev xav tau rau cov condensate los yog pipeline flushing, lub hauv qab-Flat Orientation tuaj yeem xaiv los pab txhawb kev tawm ntawm cov kua theem.

2.kev tsom xam ntawm sab saum toj ca installation tshuab
Qhov zoo ntawm Fluid Mechanics:
● Tshem tawm cov nyhuv flexitank: Khaws rau saum lub raj txuas ntxiv kom tsis txhob muaj dej stratification thiab txo qhov kev pheej hmoo ntawm airbag build-up
● Optimized flow velocity distributions: Qhia cov kev hloov pauv ntawm cov kua dej kom zoo thiab txo qis kev siv zog li ntawm 20-30%
Mechanism ntawm anti-cavitation:
● Ua kom lub siab zoo gradient: tiv thaiv lub hauv paus siab kom tsis txhob poob qis dua qhov saturated vapor siab ntawm qhov nruab nrab
● Txo lub siab pulsation: tshem tawm vortex tiam tsam thiab txo qhov tshwm sim ntawm cavitation
Kev txhawb nqa thoob ntiaj teb cov qauv:
● API 610 tus qauv yuav tsum tau: Inlet eccentric qhov chaw yuav tsum tau muab tso rau saum toj kawg nkaus
● Hydraulic Institute Standard: Pom zoo rau lub tiaj mounting raws li tus qauv rau cavitation kuj

3.Cov xwm txheej siv tau rau kev teeb tsa hauv qab
Cov xwm txheej tshwj xeeb ua haujlwm:
● Condensate Discharge System: Ua kom muaj txiaj ntsig zoo ntawm condensate
● Pipe flushing circuit: yooj yim tshem tawm cov khib nyiab
Kev Tsim Nyog Nyiaj Txiag:
● Exhaust li qub yuav tsum tau
● Txoj kab uas hla inlet yuav tsum tau nce 1-2 qib
● Nws raug nquahu kom teeb tsa cov ntsiab lus ntsuas siab

4. lub installation kev taw qhia txhais tus qauv
Txhais siv ASME Y14.5M Geometric Dimensions thiab Tolerances Standard:
Sab saum toj-flat installation:lub dav hlau ntawm eccentric ib feem yog ntws nrog lub puab phab ntsa ntawm cov yeeb nkab saum
Installation nyob rau hauv qab:lub dav hlau ntawm eccentric ib feem yog ntws nrog cov phab ntsa hauv qab ntawm cov yeeb nkab
Nco tseg:Hauv qhov project tiag tiag, nws raug nquahu kom siv 3D laser scanning los xyuas qhov tseeb ntawm kev teeb tsa.

5.Cov lus qhia rau kev siv qhov project
Tus lej simulation:Cavitation allowance (NPSH) tsom xam siv CFD software
Kev txheeb xyuas ntawm qhov chaw:Lub homogeneity ntawm qhov khiav ceev faib yog kuaj los ntawm ib tug ultrasonic flow meter
Kev soj ntsuam xyuas:Nruab siab sensors thiab vibration monitors rau kev taug qab mus ntev
Maintenance Strategy:Tsim kom muaj kev tshuaj xyuas tsis tu ncua txhawm rau tsom mus rau qhov kev yaig ntawm cov yeeb nkab inlet

Cov kev qhia tshwj xeeb tau muab tso rau hauv ISO 5199 "Technical Specification for Centrifugal Pumps" thiab GB / T 3215 "Cov Txheej Txheem Dav Dav rau Centrifugal Pumps rau Refinery, Chemical thiab Petrochemical Industries".