Ukugcina ivalvu yokuphuma ivaliwe ngexeshaIimpompo ze-centrifugalukusebenza kuzisa iingozi ezininzi zobugcisa.
Ukuguqulwa kwamandla okungalawulwayo kunye nokungalingani kwe-thermodynamic
- 1.1 Phantsi kwemeko evaliweyo yokunyuka kobushushu obuphakathi, phantse onke amandla okufaka aguqulwa abe ngamandla obushushu. Le medium ayikwazi ukususa ubushushu, nto leyo ebangela ukuba ubushushu kwigumbi lepompo bunyuke kakhulu. Ukusebenza ngokuqhubekayo kuya kubangela ukufuma kwe medium, kukhawulezise ukwenziwa kwekhabhoni kwezinto zokuvala.
1.2 Ukusilela kwenkqubo yokutywina Kwimeko-bume yobushushu obuphezulu kunye nokufuma kwesixhobo, isitywina soomatshini esixhomekeke ekuthambiseni nasekupholiseni isixhobo siya kukhokelela ekuphelelweni kwaso ngobushushu obuphezulu - isitywina soomatshini siya kuba nokungqubana okomileyo kwaye ubuso besitywina buya kutshiswa.
Uxinzelelo olungaqhelekanga loomatshini
- 2.1 Ukugqithisa kwamandla e-Axial Amandla e-axial evalvu yokuvala adla ngokuphindwe kayi-1.5-5 kunalawo akwiimeko zokusebenza eziqhelekileyo, kwaye umthwalo we-thrust bearing unokufikelela okanye udlule umda wawo wokuthwala, nto leyo ebangela ukuba i-bearing cage iqhekeke okanye i-deformation ye-cage.
2.2 Umonakalo wokungcangcazela kunye nokudinwa Umahluko ekukhuleni kobushushu obubangelwa bubushushu obuphezulu ukhokelela ekuguqukeni kobushushu okanye uxinzelelo lobushushu, umsantsa ongaqhelekanga phakathi kwe-impeller kunye ne-pump housing, kunye nempembelelo yomthwalo we-hydraulic ongalinganiyo, obangela ukuba ibhalansi eguqukayo ye-rotor yonakale, ukungcangcazela kuyanda, kwaye iindawo zonakaliswe kukudinwa.
Ukulimala kwe-cavitation kunye nomonakalo wezinto eziphathekayo
3.1 Isibonelelo se-NPSH esiguquliweyo somoya ophakathi [yenza isibonelelo se-cavitation (NPSHa) sesixhobo sibe ngaphantsi kune-NPSHr efunekayo yepompo], senza amaqamza, kwaye i-shock wave eveliswa kukudilika kwamaqamza inokufikelela kwi-690MPa, nto leyo ebangela ukuqhekeka kwe-impeller runner kunye ne-honeycomb spalling.
3.2 Ukonakala kwesakhiwo seMetallographic Kwii-impellers zentsimbi engagqwaliyo ze-austenitic, ukuzwela kunokwenzeka kumaqondo obushushu aphezulu asekuhlaleni, kwaye izinga lokugqwala phakathi kwe-granular liya kwanda kwaye amandla okuxinana aya kuncipha. Kwii-impellers zentsimbi yekhabhoni, iingxaki kumaqondo obushushu aphezulu zibaluleke ngakumbi, ezifana ne-oxidation kunye ne-decarburization kumaqondo obushushu aphezulu, okubangela ukwehla kwamandla omphezulu kunye nemigaqo-nkqubo ngokubanzi; Ukuba iqulethe ukungcola okufana ne-sulfur kunye ne-phosphorus, kulula ukukwahlula kwimida yeenkozo kumaqondo obushushu aphezulu, okubangela ukuba ubushushu bube buthathaka kwaye kube lula ukuqhekeka ngexesha lokusebenza; Phantsi kobushushu obuphezulu bexesha elide, intsimbi yekhabhoni inokumelana nokuqhekeka okubi, kwaye ubushushu obuphezulu basekuhlaleni bunokukhawulezisa ukuguquguquka kwe-creep, okuya kuthi ekugqibeleni kukhokelele ekuqhekekeni kwe-impeller okanye ukungaphumeleli kokudinwa.
Ukhuseleko lwenkqubo kunye neengozi zoqoqosho
4.1 Uxinzelelo loxinzelelo lwegobolondo elithwala uxinzelelo ludlula umda kwaye ukusebenza kwevalvu yokuvala kwenza uxinzelelo lokukhupha lwepompo lufikelele kwi-120-150% yexabiso elilinganisiweyo, kwaye kukho umngcipheko wokugqobhoza uxinzelelo olumiselweyo lwevalvu yokhuseleko, olunokubangela ukukhululwa koxinzelelo okanye ukuqhekeka kwe-weld yombhobho.
4.2 Ukusetyenziswa kwamandla kunye neendleko zokulungisa ukunyuka Ukusebenza kokuvala ivalvu "yimeko ebulalayo" yeempompo ze-centrifugal, nto leyo enyusa kakhulu ukusetyenziswa kwamandla kwixesha elifutshane, kwaye ukusebenza kwexesha elide kuya kukhokelela kumonakalo onobungozi kwizixhobo, kwaye iindleko zokulungisa ezipheleleyo zinokunyuka ngokuphindwe ka-3-10.
Ukuwohloka kweemeko zokusebenza zeendaba ezikhethekileyo
Kwimidiya eguquguqukayo (umz., i-LPG), ukusebenza kwevalvu evaliweyo kuya kukhawulezisa ukufuma kwesigaba solwelo, kwaye ukuhamba kwegesi-ulwelo okunezigaba ezimbini kwigumbi lepompo kuya kubangela utshintsho olukhawulezileyo lokuhamba, okubangela ukushukuma rhoqo kwamandla e-axial kunye nokukhawulezisa ukuguguleka kwezixhobo.
Amava oshishino kunye neemfuno ezisemgangathweni
6.1 Amava oshishinoNgokwamava okwenyani okusetyenziswa kobunjineli, umda wexesha lokusebenza kwevalvu yepompo ye-centrifugal akufuneki udlule kwimizuzu emi-2, kwaye idla ngokukhawulelwa kumzuzu o-1. Kucetyiswa ukuba kusekwe inkqubo yolawulo lwe-interlock ukuze kuqalise ngokuzenzekelayo inkqubo yokukhusela ukuvalwa xa ivalvu yokuphuma ivala kwaye iphindaphinda amaxesha.
6.2 Inkcazo esemgangathweni ifuna ukuba umgangatho we-API 610 12th Edition uthi ezinye iimpompo ezinamandla aphezulu, ezifakwe ngaphakathi okanye ezinezigaba ezininzi zinokunyuka ngokukhawuleza kobushushu xa ivalvu yokuphuma ivaliwe, nto leyo eyenza uvavanyo lungenzeki kwaye/okanye lungakhuselekanga xa ivalvu ivaliwe. Ukunyuka kobushushu kunxulumene kakhulu noxinano lwamandla. Uxinano lwamandla PD, olunokuqikelelwa ngolu hlobo:
Ireyithingi ye-P: Umlinganiselo wamandla ngesigaba ngasinye xa amanzi ekwi-hp (okanye kwi-MW)
I-D imp: Ububanzi be-impeller obulinganisiweyo kwi-in. (okanye kwi-m)
Impumlo ye-D: Ububanzi beflengi yokuphuma obuqhelekileyo ngaphakathi (okanye m). Kwiimpompo ezifunxa kabini, ezinenqanaba elinye, impumlo ye-D bububanzi beflengi yokungena.
Ixabiso eliqhelekileyo elibalulekileyo le-PD yi-0.286 hp/in.3 (13 MW/m3), ngaphaya koko kuyacetyiswa ukuba ungayisebenzisi ipompo xa ivalvu yokuphuma ivaliwe ngexesha lovavanyo lokusebenza.
Ixesha lokuthumela: Juni-04-2025