Nakong ea ts'ebetso ea nyeoe e arohaneng lipompo, li-vibrations tse sa amoheleheng ha li lakatsehe, kaha ho thothomela ha se feela ho senya mehloli le matla, empa hape ho hlahisa lerata le sa hlokahaleng, esita le ho senya pompo, e ka lebisang likotsing tse tebileng le tšenyo. Li-vibrations tse tloaelehileng li bakoa ke mabaka a latelang.

1. Cavitation

Cavitation e atisa ho hlahisa matla a marang-rang a marang-rang a mangata, ka linako tse ling a phahame ka li-harmonics tsa maqhubu a blade pass (a mangata). Cavitation ke letšoao la hlooho e sa lekaneng ea ho hula e ntle (NPSH). Ha mokelikeli o pompetsoeng o phalla libakeng tse ling tsa likarolo tsa phallo ka lebaka le itseng, khatello e felletseng ea mokelikeli e fokotseha ho ea khatellong ea mouoane (khatello ea mouoane) ea mokelikeli mochesong oa ho pompa, mokelikeli oa fetoha mouoane mona, o hlahisa mouoane, Bubbles. lia thehoa; ka nako e ts'oanang, khase e qhibilihisitsoeng ka mokelikeli e tla boela e fokotsehe ka mokhoa oa li-bubble, ho etsa phallo ea mekhahlelo e 'meli sebakeng sa sebaka seo. Ha bubble e fallela sebakeng se nang le khatello e phahameng, mokelikeli o matla o pota-potileng bubble o tla kopana ka potlako, o fokotsehe le ho phatlola bubble. Nakong eo bubble e kopanang, e honyela, 'me e phatloha, mokelikeli o pota-potileng bubble o tla tlatsa sekoti (se entsoeng ke condensation le ho phatloha) ka lebelo le phahameng, ho hlahisa leqhubu le matla la ts'oaetso. Mokhoa ona oa ho hlahisa li-bubble le ho phatloha ha li-bubble ho senya likarolo tse phallang ke mokhoa oa cavitation oa pompo. Ho putlama ha li-bubble tsa mouoane ho ka senya haholo mme ho ka senya pompo le impeller. Ha cavitation e hlaha ka pompong e arohaneng, ho utloahala eka "mabole" kapa "gravel" e feta pompong. Ke feela ha NPSH e hlokahalang ea pompo (NPSHR) e tlaase ho feta NPSH ea sesebelisoa (NPSHA) e ka qojoang cavitation.

2. Phallo ea phallo ea pompo

Pump pulsation ke boemo bo hlahang ha pompo e sebetsa haufi le hlooho ea eona e koalang. Ho thothomela ha maqhubu a nako ho tla ba sinusoidal. Hape, ponahalo e ntse e tla busoa ke 1X RPM le maqhubu a blade pass. Leha ho le joalo, litlhōrō tsena li tla ba tse sa tsitsang, tse ntseng li eketseha le ho fokotseha ha ho phalla ho etsahala. Tekanyo ea khatello ea phaephe ea phallo ea pompo e tla fetoha ho ea holimo le tlase. Haeba epompo ea nyeoe e arohanengoutlet e na le valve ea ho hlahloba, letsoho la valve le boima ba 'mele bo tla khutlela morao le pele, e leng se bontšang ho phalla ho sa tsitsang.

3. Mokotla oa pompo o kobehile

Bothata ba shaft e kobehileng bo baka ho thothomela ho hoholo ha axial, ka liphapang tsa karolo ea axial e shebileng ho 180 ° ho rotor e le 'ngoe. Haeba kobeha e le haufi le bohareng ba shaft, ho thothomela ho hoholo hangata ho etsahala ho 1X RPM; empa haeba kobeha e le haufi le ho kopanya, ho thothomela ho hoholo ho etsahala ho 2X RPM. Ho tloaelehile haholo hore molamu oa pompo o kobehe haufi kapa haufi le ho kopanya. Dial gauge e ka sebediswa ho netefatsa ho kgeloha ha shaft.

4. Impeller ea pompo e sa leka-lekaneng

Li-impeller tsa pompo tse arohaneng li lokela ho leka-lekana hantle ho moetsi oa pele oa pompo. Sena ke sa bohlokoa ka ho khetheha hobane matla a bakoang ke ho se leka-lekane a ka ama bophelo ba li-bearings tsa pompo haholo (ho jara bophelo bo fapane ka tsela e fapaneng le cube ea mojaro o matla o sebelisoang). Lipompo li ka 'na tsa e-na le li-impeller tse fanyehiloeng bohareng kapa li-cantilevered. Haeba impeller e leketlile bohareng, ho se leka-lekane ha matla hangata ho feta ho se leka-lekane ha banyalani. Tabeng ena, ho thothomela ho phahameng ka ho fetisisa hangata ho ka lehlakoreng la radial (tse rapameng le tse otlolohileng). Boemo bo phahameng ka ho fetisisa bo tla ba ka lebelo la ho sebetsa la pompo (1X RPM). Tabeng ea ho se leka-lekane ha matla, mekhahlelo e ka morao le e bohareng e tla batla e lekana (+/- 30 °) le mekhahlelo e emeng. Ho feta moo, mekhahlelo e tšekaletseng le e emeng ea pompo e 'ngoe le e 'ngoe e fapana ka 90° (+/- 30°). Ka moralo oa eona, setsi se emisitsoeng bohareng se na le matla a axial a leka-lekaneng holim'a li-bearings tse ka hare le tse ka ntle. Axial vibration e phahameng ke pontšo e matla ea hore pompo ea pompo e koetsoe ke lintho tse tsoang linaheng tse ling, e leng se etsang hore axial vibration e eketsehe ka kakaretso ka lebelo la ho sebetsa. Haeba pompo e na le "cantilevered impeller", hangata sena se fella ka axial e phahameng haholo le radial 1X RPM. Ho baloa ha Axial ho atisa ho ba ka-mohato le ho tsitsa, ha li-rotor tse nang le li-cantilevered tse nang le likhahla tsa radial tse ka 'nang tsa se ke tsa tsitsa li na le matla le ho se leka-lekane ha banyalani, e' ngoe le e 'ngoe e ka hloka ho lokisoa. Ka hona, litekanyo tsa tokiso hangata li tlameha ho beoa lifofaneng tse 2 ho loants'a matla le ho se leka-lekane ha banyalani. Tabeng ena hangata ho hlokahala ho tlosa rotor ea pompo ebe o e beha mochine oa ho leka-lekanya ho leka-lekanya ho nepahala ho lekaneng kaha lifofane tsa 2 hangata ha li fumanehe sebakeng sa mosebedisi.

5. Ho se tsamaisane hantle ha pompo

Ho se lumellane ha shaft ke boemo ba pompong ea koloi e tobileng moo li-centrelines tsa li-shaft tse peli tse kopantsoeng li sa lumellaneng. Phapang e fapaneng ke boemo boo li-centerlines tsa li-shafts li bapileng empa li fapane ho tloha ho tse ling. Hangata spectrum ea vibration e tla bontša 1X, 2X, 3X ... e phahameng, 'me maemong a boima, li-harmonics tse phahameng li tla hlaha. Ka tataiso ea radial, mohato oa ho kopanya Phapang ke 180 °. Angular misalignment e tla bonts'a axial e phahameng ea 1X, e 'ngoe ea 2X le 3X, 180 ° mokhahlelo oa ho tsoa lipheletsong tse peli tsa ho kopanya.

6. Bothata ba ho jara pompo

Litlhōrō tsa maqhubu a sa lumellaneng (ho kenyeletsoa le li-harmonics) ke matšoao a ho roala ho roala. Bophelo bo bokhutšoane ba ho jara lipompong tsa mekotla e arohaneng hangata ke phello ea khetho e mpe ea ts'ebeliso, joalo ka meroalo e feteletseng, mafura a fokolang kapa mocheso o phahameng. Haeba mofuta oa ho jara le moetsi o tsejoa, makhetlo a khethehileng a ho hlōleha ha lesale la ka ntle, lesale la ka hare, likarolo tsa rolling le cage li ka khethoa. Maqhubu ana a ho hloleha a mofuta ona oa ho beha litholoana a ka fumanoa litafoleng tsa software e ngata ea ho lokisa (PdM) kajeno.