the engine cooling water pump has been paid more and more attention by design, manufacture and users for its applicability and reliability. Especially with the continuous improvement of engine quality, the working space of the water pump is further restricted, the running speed is constantly breaking through, and the problems such as component failure and cavitation damage seriously restrict the development of the engine cooling water pump.
1. Kev ntseeg tau
As the "heart" of the cooling system, the engine cooling water pump has a harsh working environment and extremely limited space. In order to avoid disassembly and maintenance during the overhaul period, the working life of the water pump should be equal to or multiples of the engine overhaul period. Therefore, the reliability of the engine cooling water pump and its components, such as water seals, bearings, pump shafts and impellers, is extremely high, and it is necessary to achieve the same life of the engine and pump.
Txawm li cas los xij, cov qauv sib xyaw ua ke ua rau cov ncej- txuas nrog cov kabmob dav siv hauv lub cav txias dej twj tso kua mis los hloov cov ncej thiab cov kabmob sib xyaw ua ke hauv lub twj tso kua mis centrifugal, uas tuaj yeem yooj yim ua rau lub twj tso kua mis tawg vim tsis txaus. zog.
Qhov kev hloov pauv tsis tu ncua ntawm kev sib hloov ceev ua rau lub zog axial tsim los ntawm cov kiv cua txias thiab cov twj tso kua dej impeller hloov raws li. Lub hav zoov ntawm kev tshem tawm ntawm lub twj tso kua mis ncej thiab kev txhawb nqa yuav ua rau lub suab nrov thiab kev co, uas yuav ua rau muaj kev puas tsuaj rau kev ua haujlwm ntawm lub twj tso kua mis thiab cov dej foob ua haujlwm. cawv. Tshwj xeeb, lub cav txias dej twj tso kua mis ua haujlwm nyob rau hauv ib puag ncig kub, thiab kev ua haujlwm ntawm lub foob foob tsis zoo, thiab lub foob tsis ua haujlwm yuav tshwm sim.
Nyob rau tib lub sijhawm, txhawm rau txhawm rau txhawm rau txhawm rau kom txaus cov dej ntws tawm, lub taub hau qee yam thiab kev sib hloov ceev, kom paub txog cov dej txias hauv txhua qhov kev ua haujlwm thiab tshem tawm cov cua kub ntawm lub cav, ntau yam {{0} }parameter thiab siab-xav tau kev sib txuam ua rau muaj kev xav tau ntau ntxiv rau kev ua haujlwm txhim khu kev qha ntawm lub cav txias dej twj tso kua mis. Muaj kev sib tw. Yog li ntawd, qhov teeb meem kev ntseeg tau dhau los ua qhov tseem ceeb ntawm kev txwv qhov zoo thiab lub neej voj voog tus nqi ntawm lub cav txias.
2. Cavitation puas
Piv nrog cov twj centrifugal zoo tib yam, lub cav txias dej twj tso kua mis muaj ntau dua rau cavitation vim qhov kev hloov ntawm qhov kub thiab txias, kev ua haujlwm thiab kev sib hloov ceev. Thaum cavitation tshwm sim, kev co thiab suab nrov yog nrog. Kev ua haujlwm ntawm lub twj tso kua mis, xws li lub taub hau thiab kev ua haujlwm, poob sai. Yog hais tias lub impeller ua haujlwm nyob rau hauv corrosive tej yam kev mob, lub impeller yuav eroded los ntawm lub zog ntawm lub cev qhuav dej ntawm lub npuas, los yog puas perforation.
Honeycomb pits nyob rau saum npoo ntawm lub cav txias dej twj tso kua mis thiab cov pits nyob ze ntawm lub volute sib cais tus nplaig yog feem ntau cavitation puas.
Tsis tas li ntawd, lub cavitation ntawm lub cav txias dej twj tso kua mis kuj tseem corrode thiab rhuav tshem cov overcurrent Cheebtsam, thiab ua kom lub cev tsis ua haujlwm ntawm cov khoom. Lub cavitation puas tsuaj ntawm lub cav txias dej twj tso kua mis tau dhau los ua ib qho tseem ceeb rau kev ua haujlwm luv luv ntawm lub twj tso kua mis thiab tsim kev co thiab suab nrov, uas cuam tshuam rau kev ua haujlwm ntawm lub tsheb txias. Yog li ntawd, kev txhim kho nws cov kev tiv thaiv kev tiv thaiv - cavitation kev ua tau zoo yog thawj qhov teeb meem uas yuav tsum tau txiav txim siab kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov cua txias.
Qhov chaw ua haujlwm hnyav ntawm lub cav txias dej twj tso kua mis ua rau muaj kev ntseeg siab thiab cavitation kev puas tsuaj ntawm lub twj tso kua mis tshwj xeeb, uas cuam tshuam rau kev nyab xeeb, ruaj khov thiab txhim khu kev lag luam ntawm cov cua txias. Nws yog ib qho tseem ceeb heev rau txoj kev loj hlob ntawm lub cav txias system los tham txog yuav ua li cas los txhim kho qhov kev cia siab ntawm lub cav txias dej twj tso kua mis thiab kawm lub mechanism ntawm cavitation.