Kaviri booster pombi yemhepo zvisimbiso, yakagadziridzwa kubva kucompressor air seal tekinoroji, yakajairika muindasitiri yeshaft seal.Zvisimbiso izvi zvinopa zero kubuda kwemvura inopomba kuenda kumhepo, inopa kushomeka kwekushomeka papombi shaft uye kushanda nerutsigiro rwakareruka.Aya mabhenefiti anopa yakaderera yakazara mhinduro lifecycle mutengo.
Zvisimbiso izvi zvinoshanda nekuunza kunze kwekunze kwegasi rakamanikidzwa pakati pemukati uye kunze kwekuvharika kwenzvimbo.Iyo chaiyo topography yenzvimbo yekuvharisa inoisa yakawedzera kudzvanywa pane inovharira gasi, zvichiita kuti nzvimbo yekuvharisa iparadzane, zvichiita kuti chisimbiso chiyangare mufirimu regesi.Kurasikirwa kwefriction kwakadzikira sezvo nzvimbo dzekuvharira dzisisabatike.Iyo inodzivirira gasi inopfuura nepakati pe membrane pane yakaderera kuyerera, ichidya iyo inovharira gasi nenzira yekudonha, iyo yakawanda inodonhedza kumhepo kuburikidza nekunze kwechisimbiso.Yakasara inopinda mukamuri yechisimbiso uye pakupedzisira inotakurwa neiyo nzira yekuyerera.
Zvese zvakapetwa kaviri hermetic zvisimbiso zvinoda kudzvanywa mvura (mvura kana gasi) pakati pemukati nekunze kwenzvimbo ye mechanical seal assembly.Tsigiro yekutsigira inodiwa kuendesa iyi fluid kune chisimbiso.Kusiyana neizvi, mune yemvura yakaomeswa kudzvinyirirwa kaviri chisimbiso, chipingamupinyi chinotenderera chinotenderera kubva mudura kuburikidza nechisimbiso chemuchina, kwainozora nzvimbo yechisimbiso, inotora kupisa, uye inodzokera kudhamu kwainoda kuburitsa kupisa kwakabatwa.Iyi fluid pressure dual seal support systems yakaoma.Thermal mitoro inowedzera nekumanikidza kwemaitiro uye tembiricha uye inogona kukonzera matambudziko ekuvimbika kana isina kunyatsoverengerwa nekusetwa.
Iyo yakamanikidzwa mhepo kaviri chisimbiso chetsigiro system inotora nzvimbo shoma, haidi kutonhora mvura, uye inoda gadziriso shoma.Mukuwedzera, kana chitubu chakavimbika chekudzivirira gasi chiripo, kuvimbika kwayo kunoenderana nekumanikidza kwemaitiro uye tembiricha.
Nekuda kwekukura kutorwa kwemaviri ekumanikidza pombi yemhepo zvisimbiso pamusika, iyo American Petroleum Institute (API) yakawedzera Chirongwa 74 sechikamu chekuburitswa kwechipiri edition yeAPI 682.
74 Chirongwa chetsigiro chechirongwa chinowanzo seti yegeji-akamisikidzwa nemavharuvhu anochenesa gasi rinovharira, kudzora kudzika kwemvura, uye kuyera kudzvanywa uye kuyerera kwegasi kumakina zvisimbiso.Kutevera nzira yegasi inodzivirira kuburikidza neChirongwa 74 panel, chinhu chekutanga ivhavha yekuongorora.Izvi zvinobvumira iyo inovharira gasi rekupa kuti rive rakapatsanurwa kubva kune chisimbiso chekutsiva sefa chinhu kana pombi kugadzirisa.Gasi rinovharira rinobva rapfuura nepakati pe2 kusvika ku3 micrometer (µm) coalescing sefa iyo inoteya zvinwiwa uye zvidimbu zvinogona kukuvadza topographical maficha echisimbiso, kugadzira firimu regasi pamusoro pechisimbiso chepamusoro.Izvi zvinoteverwa neanomanikidza regulator uye manometer yekumisikidza kudzvanywa kwechivharo gasi kupa kune mechanical seal.
Dual pressure pombi gasi zvisimbiso zvinoda chinovharira gasi rekupa kumanikidza kusangana kana kudarika kushoma mutsauko kudzvanywa pamusoro peiyo yakanyanya kumanikidza mukamuri yechisimbiso.Uku kudonhedza kuderera kunosiyana nemugadziri wechisimbiso uye mhando, asi inowanzotenderedza mapaundi makumi matatu paskweya inch (psi).Iyo yekudzvanya switch inoshandiswa kuona chero matambudziko ane chinovharira gasi rekupa kumanikidza uye kuridza alarm kana kudzvanywa kudonha pasi peiyo shoma kukosha.
Kushanda kwechisimbiso kunodzorwa neyakavharira gasi kuyerera uchishandisa kuyerera kwemamita.Kutsauswa kubva kune chisimbiso gasi kuyerera kwemazinga anoshumwa nevagadziri vemakanika chisimbiso anoratidza kuderedzwa kwekuita chisimbiso.Kudzikira gasi kuyerera kungave kuri nekuda kwekutenderera kwepombi kana kutama kwemvura kuenda kuchisimbiso kumeso (kubva kune yakasvibiswa barriers gasi kana process fluid).
Kazhinji, mushure mezviitiko zvakadaro, kukuvadzwa kwezvisimbiso zvekuvhara kunoitika, uye ipapo chivharo chekuyerera kwegesi chinowedzera.Kuwedzera kudzvanya mupombi kana kurasikirwa kwechidimbu kwechivharo gasi kudzvanywa kunogona kukuvadza nzvimbo yekuisa chisimbiso.Ma alarm ekuyerera akakwira anogona kushandiswa kuona kana kupindira kuchidiwa kugadzirisa kuyerera kwegasi.Iyo yekuseta yearamu yekuyerera yakanyanya kazhinji muhuwandu hwegumi kusvika zana nguva yakajairika inovharira gasi kuyerera, kazhinji isingatemerwe nemugadziri wechisimbiso, asi zvinoenderana nekuti yakawanda sei gasi kuvuza iyo pombi inogona kushivirira.
Pachinyakare variable gauge flowmeters akashandiswa uye hazvishamisi kuti yakaderera uye yakakwirira siyana flowmeters kuti yakabatana munhevedzano.A high flow switch inogona kuiswa pa high range flow meter kuti ipe alarm yekuyerera.Variable area flowmeters inogona chete calibrated kune mamwe magasi pane mamwe tembiricha uye kumanikidzwa.Paunenge uchishanda pasi pemamwe mamiriro ezvinhu, akadai sekuchinja kwekushisa pakati pezhizha nechando, chiyero chekuyerera chinoratidzwa hachigoni kuonekwa sechinhu chakarurama, asi chiri pedyo nekukosha chaiko.
Nekuburitswa kweAPI 682 4th edition, kuyerera uye kuyerwa kwekumanikidza kwakasimuka kubva kuanalogi kuenda kudhijitari nekuverenga kwenzvimbo.Digital flowmeters inogona kushandiswa seyachinja nzvimbo inoyerera, iyo inoshandura nzvimbo yekuyangarara kuita masaini edhijitari, kana masherufu flowmeters, ayo anoshandura otomatiki kuyerera kune vhoriyamu kuyerera.Chinosiyanisa chemaserial flow transmitters ndechekuti ivo vanopa zvinobuda zvinotsiva kudzvanywa uye tembiricha kuti ipe kuyerera kwechokwadi pasi pemamiriro emuchadenga.Izvo zvisingabatsiri ndezvekuti michina iyi inodhura kupfuura inoshanduka nzvimbo flowmeters.
Dambudziko rekushandisa inoyerera nderekutsvaga mudhiraivho unokwanisa kuyera chipingamupinyi chekuyerera kwegasi panguva yekushanda kwakajairwa uye pakuyerera kwearamu mapoinzi.Kuyerera kwema sensors ane huwandu hwakanyanya uye hudiki hunokosha hunogona kuverengwa nemazvo.Pakati pe zero kuyerera uye hushoma kukosha, kubuda kunobuda kunogona kunge kusiri kwakaringana.Dambudziko nderekuti sezvo iyo yakanyanya kuyerera mwero weimwe inoyerera transducer modhi inowedzera, iyo shoma yekuyerera mwero inowedzerawo.
Imwe mhinduro ndeye kushandisa maviri transmitters (imwe yakaderera frequency uye imwe yakakwira frequency), asi iyi isarudzo inodhura.Yechipiri nzira ndeyekushandisa kuyerera kwe sensor kune yakajairwa mashandiro ekuyerera uye kushandisa yakanyanya kuyerera switch ine yakakwirira siyana analog flow meter.Chikamu chekupedzisira chinovharirwa gasi chinopfuura nepacho ivhavhavhavha risati ravharira gasi rinobva papanera uye rinobatanidza kune mechanical chisimbiso.Izvi zvinodikanwa kudzivirira kuyerera kwepombi yemvura mukati mepaneti uye kukuvadzwa kune chiridzwa kana chiitiko chisina kujairika chinokanganisa maitiro.
Ivhavha yecheki inofanira kuva nemhepo yakaderera yekuvhura.Kana kusarudzwa kwakashata, kana kana chisimbiso chemhepo chepombi yepombi ine yakaderera gasi inoyerera, zvinogona kuonekwa kuti chipingamupinyi chegasi chinoyerera pulsation chinokonzerwa nekuvhura uye kugadzirisa zvakare chevhavhavhavha yekuongorora.
Kazhinji, sitrojeni yekudyara inoshandiswa sechidziviriro gasi nekuti inowanikwa nyore, inert uye haikonzerese kukanganisa kwemakemikari mumvura inopomba.Inert magasi asingawanikwi, akadai seargon, anogonawo kushandiswa.Mumamiriro ezvinhu apo iyo inodiwa yekudzivirira gasi pressure yakakura kudarika chirimwa nitrogen pressure, pressure booster inogona kuwedzera kudzvanya uye kuchengeta iyo yakanyanya kudzvanywa gasi mune inogamuchira yakabatana nePlan 74 panel inlet.Mabhodhoro enitrogen mabhodhoro haawanzo kukurudzirwa sezvo achida kugara achitsiva masilinda asina akazara.Kana hutano hwechisimbiso huchiderera, bhodhoro rinogona kukurumidza kubviswa, zvichiita kuti pombi imire kudzivirira kuwedzera kukuvadza uye kukundikana kwechisimbiso chemagetsi.
Kusiyana ne-liquid barriers masisitimu, Ronga 74 masisitimu ekutsigira haadi padyo padyo nemakanika zvisimbiso.Iyo chete caveat pano ndiyo chikamu chakarebeswa chediki dhayamita chubhu.Kudonhedzwa kwekumanikidzwa pakati peChirongwa 74 chisimbiso uye chisimbiso chinogona kuitika mupombi panguva dzekuyerera kwepamusoro (kuora kwechisimbiso), izvo zvinoderedza kuvharirwa kunowanikwa kune chisimbiso.Kuwedzera ukuru hwepombi kunogona kugadzirisa dambudziko iri.Semutemo, Ronga 74 mapaneru akaiswa pachigadziko paurefu hwakakodzera hwekudzora mavharuvhu uye kuverenga chiridzwa.Chibhuraketi chinogona kugadzikwa pachigadziko chepombi kana padivi pepombi pasina kukanganisa pombi yekuongorora nekugadzirisa.Dzivisa njodzi dzekugumburwa pamapombi/pombi dzinobatanidza Ronga 74 mapaneru ane mechaniki zvisimbiso.
Pamapombi anotakura ane maviri emakanika zvisimbiso, imwe kumagumo epombi, hazvikurudzirwe kushandisa imwe pani uye kupatsanura barriers gasi kubuda kune imwe neimwe mechanic chisimbiso.Mhinduro inokurudzirwa ndeye kushandisa rakaparadzana Plan 74 pane chisimbiso chega chega, kana Plan 74 pani ine zvinobuda zviviri, imwe neimwe iine yayo seti yemaflowmeters uye inoyerera switch.Munzvimbo dzine chando chinotonhora zvingave zvakakosha kuti overwinter Plan 74 panels.Izvi zvinonyanya kuitirwa kuchengetedza midziyo yemagetsi yepanera, kazhinji nekuvharira mapaneru mukhabhineti uye nekuwedzera zvinhu zvekudziya.
Chinhu chinonakidza ndechekuti iyo inovharira gasi kuyerera mwero inowedzera nekudzikira gasi rekupa tembiricha.Izvi zvinowanzoenda zvisingaonekwe, asi zvinogona kuoneka munzvimbo dzine chando chechando kana mutsauko mukuru wetembiricha pakati pezhizha nechando.Mune zvimwe zviitiko, zvingave zvakakosha kugadzirisa yakakwira yekuyerera alarm set point kudzivirira ma alarm enhema.Panel air ducts uye pombi dzinobatanidza/pombi dzinofanirwa kucheneswa usati waisa Plan 74 mapaneru mubasa.Izvi zvinonyanya kuwanikwa nekuwedzera vent valve pa kana padyo ne mechanical seal connection.Kana chivharo chekubuda ropa chisipo, hurongwa hunogona kucheneswa nekubvisa chubhu / chubhu kubva pamagetsi chisimbiso uye wozoibatanidza zvakare mushure mekuchenesa.
Mushure mekubatanidza mapaneru eChirongwa 74 kune zvisimbiso uye kutarisa zvese zvinongedzo zvekudonha, iyo inodzvinyirira regulator ikozvino inogona kugadziridzwa kune yakagadzika kudzvanywa mukushandisa.Iyo pani inofanirwa kupa yakadzvanywa barriers gasi kune mechaniki chisimbiso isati yazadza pombi ne process fluid.Iyo Plan 74 zvisimbiso uye mapaneru akagadzirira kutanga kana pombi yekumisikidza uye nzira dzekufambisa dzapera.
Iyo sefa element inofanirwa kuongororwa mushure memwedzi wekushanda kana mwedzi mitanhatu yega yega kana pasina kusvibiswa kunowanikwa.Iyo sefa yekutsiva nguva ichaenderana nekuchena kwegasi rakapihwa, asi haifanirwe kudarika makore matatu.
Barrier gasi mitengo inofanira kuongororwa uye kurekodhwa panguva yekuongorora nguva dzose.Kana iyo inovharira mhepo inoyerera pulsation inokonzerwa nevhavha yekutarisa kuvhura uye kuvhara yakakura zvakakwana kukonzeresa kuyerera kwearamu, aya maalarm values angangoda kuwedzerwa kudzivirira maalarm enhema.
Nhanho yakakosha mukubvisa nderekuti kuparadzaniswa uye kudzvinyirira kwekudzivirira gasi kunofanirwa kunge kuri danho rekupedzisira.Kutanga, bvisa uye depressurize pombi casing.Kana pombi iri munzvimbo yakachengeteka, iyo inodzivirira gasi rekupa kumanikidza inogona kudzimwa uye gasi rinobviswa kubva papombi inobatanidza Plan 74 pani kune mechanical chisimbiso.Bvisa mvura yese kubva muhurongwa usati watanga chero basa rekugadzirisa.
Dual pressure pump air seals yakasanganiswa nePlan 74 tsigiro masisitimu inopa vashandisi zero-emission shaft seal solution, yakaderera capital investment (ichienzaniswa nezvisimbiso zvine mvura inovhara masisitimu), kuderedzwa kwehupenyu kutenderera mutengo, diki tsigiro system yetsoka uye shoma sevhisi zvinodiwa.
Kana yaiswa uye ikashandiswa zvinoenderana neakanakisa maitiro, iyi mhinduro yekuchengetera inogona kupa kuvimbika kwenguva refu uye kuwedzera kuwanikwa kwemidziyo inotenderera.
We welcome your suggestions on article topics and sealing issues so that we can better respond to the needs of the industry. Please send your suggestions and questions to sealsensequestions@fluidsealing.com.
Mark Savage ndiye maneja weboka rezvigadzirwa kuJohn Crane.Savage ane Bachelor of Science in Engineering kubva kuYunivhesiti yeSydney, Australia.Kuti uwane rumwe ruzivo shanya johncrane.com.
Nguva yekutumira: Sep-08-2022