Chii chinonzi apombi shaft chisimbiso?
Shaft seals inodzivirira mvura kutiza kubva mugomba rinotenderera kana kuti rinodzoka.Izvi zvakakosha kune ese mapombi uye kana iri centrifugal pombi sarudzo dzinoverengeka dzekuisa chisimbiso dzichave dziripo: kurongedza, miromo seal, uye ese marudzi emakanika zvisimbiso- imwechete, kaviri uye tandem zvinosanganisira cartridge seals.Rotary positive displacement pombi senge magiya pombi uye vane mapampu anowanikwa nekurongedza, miromo uye mechaniki chisimbiso gadziriro.Mapombi anodzorera anounza matambudziko akasiyana ekuisa chisimbiso uye kazhinji anovimba nezvisimbiso zvemiromo kana kurongedza.Mamwe madhizaini, akadai semagineti drive pombi, diaphragm pombi kana peristaltic pombi, hazvidi shaft zvisimbiso.Aya anodaidzwa kuti 'sealless' pombi anosanganisira zvisimbiso zvakamira kudzivirira kubuda kwemvura.
Ndedzipi mhando huru dzepombi shaft seals?
Packing
Packing (inozivikanwawo sekuti shaft packing kana gland packing) ine zvinhu zvakapfava, izvo zvinowanzorukwa kana kuumbwa kuita zvindori.Izvi zvinodzvanywa mukamuri yakatenderedza drive shaft inonzi stuffing box kugadzira chisimbiso (Mufananidzo 1).Kazhinji, kudzvanywa kunoshandiswa axially kurongedza asi inogona zvakare kuiswa radially ne hydraulic medium.
Nechinyakare, kurongedza kwaigadzirwa kubva padehwe, tambo kana tambo asi ikozvino kazhinji ine inert zvinhu zvakaita seyakawedzerwa PTFE, compressed graphite, uye granulated elastomers.Kurongedza kune hupfumi uye kunowanzoshandiswa kune zvakakora, zvakaoma-kusimbisa zvinwiwa zvakaita seresin, tara kana zvinonamira.Nekudaro, inzira isina kunaka yekuisa chisimbiso yezvinwiwa zvitete, kunyanya pakumanikidza kwakanyanya.Kurongedza kashoma kukundikana zvine njodzi, uye kunogona kutsiviwa nekukurumidza panguva yekuvharwa kwakarongwa.
Kurongedza zvisimbiso zvinoda lubrication kudzivirira kuvaka-up kwekupisa kunopokana.Izvi zvinowanzopihwa nemvura inopomba pachezvayo iyo inodonha zvishoma kuburikidza nekutakura zvinhu.Izvi zvinogona kuve zvakashata uye kana paine zvinopisa, zvinopisa, kana zvinwiwa zvine muchetura kazhinji hazvigamuchirwe.Muzviitiko izvi mafuta akachengeteka, ekunze anogona kuiswa.Kurongedza hakuna kukodzera kuvhara pombi dzinoshandiswa kune zvinwiwa zvine abrasive particulates.Solids inogona kunyudzwa mune yekurongedza zvinhu uye izvi zvinogona kuzokuvadza pombi shaft kana stuffing bhokisi madziro.
Miromo inosimbisa
Lip Seals, inozivikanwawo seradial shaft seals, inongori denderedzwa elastomeric zvinhu izvo zvakabatwa panzvimbo pakatarisana nedhiraivha shaft neyakaomesesa yekunze imba (Mufananidzo 2).Chisimbiso chinomuka kubva mukupokana pakati pe'lip' uye shaft uye izvi zvinowanzosimbiswa nechitubu.Miromo seals yakajairika muindasitiri ye hydraulic uye inogona kuwanikwa pamapombi, hydraulic motors, uye actuators.Ivo vanowanzopa chechipiri, chekuchengetedza chisimbiso chemamwe masisitimu ekuvharira seamakanika zvisimbiso Lip seals anowanzo kuganhurirwa kune yakaderera kudzvanywa uye zvakare ari murombo kune zvinyoro zvitete, zvisiri-kuzora.Multiple lip seal systems yakashandiswa zvinobudirira kurwisa zvakasiyana-siyana zve viscous, zvinwiwa zvisingatauriki.Miromo seals haina kukodzera kushandiswa nechero abrasive zvinwiwa kana zvinwiwa zvine solids sezvo zviri nyore kupfeka uye chero kukuvara kudiki kunogona kukonzera kukundikana.
Mechanical seals
Mechanical zvisimbiso zvinonyanya kuve nepeya imwe kana anopfuura ezviso zvakati sandara, zvakakwenenzverwa zviso, imwe yakamira mudzimba uye imwe inotenderera, yakabatana nedhiraivha shaft (Mufananidzo 3).Zviso zvinoda kuzorwa, kungave nemvura inopomba pachayo kana neinodzivirira fluid.Mukuita, zviso zvechisimbiso zvinongosangana kana pombi yazorora.Munguva yekushandiswa, iyo yekuzora mvura inopa yakaonda, hydrodynamic firimu pakati peanopikisa zviso zvechisimbiso, kuderedza kupfeka uye kubatsira kupisa kupisa.
Mechanical seals anogona kubata zvakasiyana siyana zvinwiwa, viscosities, kumanikidzwa, uye tembiricha.Nekudaro, chisimbiso chemuchina hachifanirwe kuomeswa.Mukana wakakosha wemakanika chisimbiso masisitimu ndeyekuti drive shaft uye casing haisi chikamu chekuisa chisimbiso (sezvazvakaita nekurongedza uye miromo zvisimbiso) uye hazvizove pasi pekupfeka.
Zvisimbiso zviviri
Zvisimbiso zviviri zvinoshandisa zvisimbiso zviviri zvemakanika zvakaiswa kumashure (Mufananidzo 4).The nzvimbo mukati kuti maviri seti zviso chisimbiso anogona hydraulically kudzvinyirirwa ane chipingamupinyi mvura kuitira kuti firimu pamusoro chisimbiso zviso zvakakodzera kuti lubrication achava chipingamupinyi mvura uye kwete svikiro ari kupomba.Iyo inodzivirira mvura inofanirwawo kuenderana neyepombi yepakati.Zvisimbiso zvakapetwa kaviri zvakanyanya kuomarara kushanda nekuda kwekuda kwekudzvanyirirwa uye zvinowanzo shandiswa chete kana zvichidikanwa kuchengetedza vashandi, zvinhu zvekunze uye nharaunda yakatenderedza kubva kune zvine njodzi, muchetura kana zvinopisa zvinwiwa.
Tandem seals
Zvisimbiso zveTandem zvakafanana nezvisimbiso zvakapetwa kaviri asi iwo maviri seti emakanika zvisimbiso anotarisana nenzira imwe chete kwete kumashure-kumashure.Chete chigadzirwa-padivi chisimbiso chinotenderera mumvura inopomba asi kubuda mukati mezviso zvechisimbiso kunozosvibisa mafuta anodzivirira.Izvi zvine mhedzisiro yeatmospheric side seal nenzvimbo yakatenderedza.
Cartridge seals
A cartridge seal i-pre-assembled package ye mechanical seal components.Cartridge kuvaka inobvisa nyaya dzekuisa senge kudiwa kwekuyera uye kuseta chitubu compression.Zviso zvechisimbiso zvakare zvinodzivirirwa kubva pakukuvadzwa panguva yekuiswa.Mukugadzira, chisimbiso che cartridge chinogona kuve chimwechete, kaviri kana tandem gadziriso iri mukati megland uye yakavakirwa pane sleeve.
Gasi barriers seals.
Aya ndiwo zvigaro zvekaturiji-maitiro maviri ane zviso zvakagadzirirwa kudzvanywa uchishandisa inert gasi sechivharo, kutsiva chinyakare chekuzora mvura.Zviso zvechisimbiso zvinogona kupatsanurwa kana kubatwa zvakasununguka panguva yekushanda nekugadzirisa gasi rinomanikidza.Chikamu chidiki chegasi chinogona kupukunyuka chichipinda muchigadzirwa uye mumhepo.
Summary
Shaft seals inodzivirira kuti mvura ibude kubva pamugero wepombi unotenderera kana kuti unodzokerana.Kazhinji sarudzo dzinoverengeka dzekuisa chisimbiso dzichave dziripo: kurongedza, zvisimbiso zvemiromo, uye marudzi akasiyana emakanika zvisimbiso- imwechete, mbiri uye tandem zvinosanganisira cartridge seals.
Nguva yekutumira: May-18-2023