Nhanganyaya kune Globe mavharuvhu

Globe mavharuvhu

A Globe mavharuvhu imutsara inofamba vharafu uye inonyanya kugadzirirwa kumisa, kutanga uye kutonga kuyerera. Iyo dhisiki yeGlobe valve inogona kubviswa zvachose kubva munzira inoyerera kana inogona kuvhara zvachose nzira inoyerera.

Yakajairwa Globe mavharuvhu anogona kushandiswa kuzviparadzanisa nevamwe uye throttling masevhisi. Kunyange zvazvo mavharuvhu aya achiratidza kudonhera kwakakwirira zvishoma kudarika kutwasuka=kuburikidza nemavharuvhu (eg, gedhi, plug, bhora, zvichingodaro), anogona kushandiswa uko kudonhedza kudonhera nevharuvhu hakusi chinhu chinodzora.

Nekuda kwekuti iyo yese system yekumanikidza inoiswa pa disc inotamirwa kune yevhavha stem, iyo inoshanda saizi muganhu wemavharuvhu aya iNPS 12 (DN 300). Globe mavharuvhu akakura kupfuura NPS 12 (DN 300) akasarudzika pane mutemo. Mavharuvhu makuru angada kuti masimba makuru aiswe pahunde kuti avhure kana kuvhara vharafu pasi pekumanikidzwa. Globe mavharuvhu muhukuru kusvika kuNPS 48 (DN 1200) akagadzirwa uye akashandiswa.

Globe mavharuvhu anoshandiswa zvakanyanya kudzora kuyerera. Uwandu hwekudzora kuyerera, kudonha kwekumanikidza, uye basa rinofanirwa kutariswa mukugadzirwa kwevharuvhu kudzivirira kutadza nguva isati yakwana uye kuvimbisa basa rinogutsa. Mavharuvhu akaiswa kune yakakwira-differential pressure-throttling service inoda yakanyatsogadzirwa vharafu trim.

Kazhinji iyo yakanyanya kusiyanisa kudzvinyirirwa kwepakati pevhavha disc haifanire kudarika 20 muzana yekukwira kumusoro kwemhepo kana 200 psi (1380 kPa), chero ishoma. Mavharuvhu ane yakakosha trim anogona kugadzirirwa maapplication anopfuura aya masiyano ekumanikidza.

Kanda simbi yeglobe valve yemafuta uye gasi indasitiri

Magadzirirwo emuviri eGlobe mavharuvhu

Kune matatu ekutanga emuviri magadzirirwo eGlobe mavharuvhu, anoti: Tee Patani kana Z-muviri, Angle Pateni uye Wye Patani kana Y-muviri muviri.

Tee Pattern Globe valve dhizainindiyo inonyanya kuzivikanwa mhando yemuviri, ine diaphragm yakaita Z. Kumisikidzwa kwechigaro kwakachinjika kunobvumira kuti dzinde uye dhisiki kufamba perpendicular kune yakachinjika mutsara. Iyi dhizaini ine yakaderera coefficient yekuyerera uye yakakwirira kudonha kudonha. Iwo anoshandiswa mumasevhisi akasimba ekupuruzira, senge mumitsara yekupfuura yakatenderedza valve yekudzora. Tee-pattern Globe mavharuvhu anogona zvakare kushandiswa mumashandisirwo uko kudonhedza kudonha kusiri kunetseka uye kupuruzira kunodiwa.

 

 

Angle Pattern Globe mavharuvhu dhizainiiko kugadziridzwa kweiyo yakakosha Tee Pattern Globe valve. Migumo yeiyi Globe valve iri pakona ye90 madhigirii, uye kuyerera kwemvura kunoitika neimwe 90 madhigirii kutendeuka. Ivo vane yakaderera zvishoma coefficient yekuyerera pane wye-pattern Globe mavharuvhu. Iwo anoshandiswa mumashandisirwo ane nguva yekupuruzira kuyerera nekuda kwekugona kwavo kubata slugging maitiro emhando iyi yekuyerera.

 

 

Wye Pattern Globe mavharuvhu dhizaini, ndiyo imwe nzira yekudonha kwemhepo yakanyanya, inowanikwa mumavharuvhu eGlobe. Chigaro nedzinde zvakatenderedzwa paanenge 45 madhigirii, izvo zvinopa nzira yakatwasuka pakuvhurwa kuzere uye inopa kushomeka kushoma kuyerera. Anogona kutsemuka kwenguva yakareba pasina kukukurwa kwakanyanya. Iwo anoshandiswa zvakanyanya kupuruzira panguva yemwaka kana yekutanga mashandiro. Inogona kuve tsvimbo kuburikidza nekubvisa marara kana ichishandiswa mumigero yekudonha iyo inowanzovharwa.

Disk uye Seat uye Stem yeGlobe mavharuvhu

Disk:Madhizaini akajairika edhisiki eGlobe mavharuvhu ndeaya: bhora dhisiki, dhisiki rekuumbwa uye plug disk. Bhora dhisiki dhizaini rinoshandiswa zvakanyanya mukudzvinyirira kwakaderera uye kuderera kwekushisa masisitimu. Iyo inokwanisa throttling kuyerera, asi musimboti inoshandiswa kumira uye kutanga kuyerera.

Composition disk dhizaini inoshandisa yakaoma, isiri-simbi yekuisa mhete pane dhisiki, iyo inovimbisa kuvharika kwakasimba.

Plug disk dhizaini inopa zvirinani kupuruzira pane bhora kana magadzirirwo ekugadzira. Iwo anowanikwa mune akawanda magadzirirwo akasiyana uye ese akareba uye akatemerwa.

Chigaro:Globe valve zvigaro zvingave zvakabatanidzwa kana kupindirwa mukati memuviri wevharuvhu. Mavharuvhu mazhinji eGlobe ane zvigaro zvekumashure mukati meBonnet. Zvigaro zvekumashure zvinopa chisimbiso pakati pehunde neBonnet uye zvinodzivirira kudzvanywa kwehurongwa kubva pakuvaka vachipesana nevhavha pakking, kana vharuvhu yakavhurika zvakazara. Zvigaro zvekumashure zvinowanzoiswa muGlobe mavharuvhu.

Dzinde:Globe mavharuvhu anoshandisa nzira mbiri dzekubatanidza dhisiki uye hunde: iyo T-slot uye disk nut kuvaka. Mune T-slot dhizaini, dhisiki inotsvedza pamusoro pehunde, nepo mudhisiki nut dhizaini, dhisiki inodzvanywa muhunde.

Kugadzirwa kweGlobe valve

Globe mavharuvhu anowanzo ane madzinde anokwira, uye hukuru hukuru ndehwekunze-ne-joko kuvaka. Zvikamu zveGlobe valve zvakafanana neaya evhavha yegedhi. Rudzi urwu rwevharuvhu rine zvigaro mundege inofanana kana yakarerekera kumutsara wekuyerera.

Kugadziriswa kweGlobe mavharuvhu kuri nyore, sezvo madhisiki nezvigaro zviri nyore kuvandudzwa kana kutsiviwa. Izvi zvinoita kuti mavharuvhu eGlobe anyanyokodzera masevhisi anoda kugara achigadziriswa mavharuvhu. Iko mavharuvhu anoshandiswa nemaoko, iyo pfupi disc kufamba inopa zvakanakira mukuchengetedza opareta nguva, kunyanya kana mavharuvhu achigadziriswa kazhinji.

Musiyano mukuru muGlobe-valve dhizaini iri mumhando dzemadhisiki anoshandiswa. Plug-type discs ane refu, tapered configuration ane yakafara inobereka pamusoro. Rudzi urwu rwechigaro runopa kupikisa kwakanyanya kune erosive chiito chemvura inoyerera. Mune dhisiki rekuumbwa, dhisiki rine chiso chakati sandara chinotsikirirwa kuvhurika kwechigaro sekepisi. Rudzi urwu rwekurongeka kwechigaro harukodzeri kune yakakwira musiyano wekumanikidza throttling.

Mu-cast-iron Globe mavharuvhu, disc uye zvigaro zvindori zvinowanzogadzirwa nebronze. Musimbi-Globe mavharuvhu ekupisa kusvika 750 ° F (399 ° C), iyo trim inowanzo gadzirwa nesimbi isina tsvina uye saka inopa kuramba kubata uye kuputika. Zviso zvinosangana zvinowanzogadziriswa kupisa kuti uwane mutsauko wekuomarara. Zvimwe zvigadziriso, kusanganisira cobalt-based alloys, zvinoshandiswa zvakare.

Nzvimbo yekugara yakavhurika kuti ive nechokwadi chekubata kwakazara kwepamusoro kana valve yakavharwa. Kune makirasi ekudzvinyirira akaderera, kurongeka kunochengetwa neakareba disc locknut. Nekudzvinyirirwa kwepamusoro, madhairekitori edhisiki anokandwa mumuviri wevharuvhu. Iyo dhisiki inotendeuka zvakasununguka pahunde kudzivirira galling yedhisiki kumeso uye mhete yechigaro. Dzinde rinotakura kurwisana nendiro yakaomeswa, inobvisa gangaidzo redzinde uye dhisiki panzvimbo yekubata.

Flow direction yeGlobe mavharuvhu

Kune maapplication ane tembiricha yakaderera, Globe mavharuvhu anowanzo kuisirwa kuitira kuti kudzvanywa kuri pasi pe disc. Izvi zvinobatsira kushanda nyore uye zvinobatsira kuchengetedza kurongedza.

Kune maapplication ane yakanyanya tembiricha yekupisa sevhisi, Globe mavharuvhu anoiswa kuitira kuti kudzvanywa kuri pamusoro pe diski. Zvikasadaro, iyo hunde inobvumirana pakutonhora uye inosimudzira dhisiki kubva pachigaro.

Zvakanakira uye Zvakaipa zveGlobe mavharuvhu

Zvakanakira:

• Yakanaka shutoff kugona
• Zviri pakati nepakati kusvika kune zvakanaka throttling kugona
• Shorter stroke (ichienzaniswa nevhavha yegedhi)
• Inowanikwa mu tee, wye, uye angle mapatani, imwe neimwe ichipa yakasarudzika hunyanzvi
• Zviri nyore kumichina kana kusimudzira zvigaro
• Ne disc isina kusungirirwa pahunde, valve inogona kushandiswa sevhavha yekumira-cheki

Zvakaipa:

• Kudonha kwepamusoro (kuenzaniswa nevhavha yegedhi)
• Inoda simba guru kana kuti chibatiso chikuru kuti chigadzike vharuvhu (nekumanikidza pasi pechigaro)
• Kuyerera kunoyerera pasi pechigaro uye shutoff inoyerera pamusoro pechigaro

Yakajairika Mashandisirwo eGlobe mavharuvhu

Zvinotevera ndezvimwe zvezvakajairwa zveGlobe mavharuvhu:

• Kutonhodza nzira dzemvura uko kuyerera kunoda kudzorwa
• Mafuta emafuta sisitimu uko kuyerera kunodzorwa uye leakightness yakakosha
• High-point vents uye yakaderera-point madhiraini kana leakightness uye kuchengeteka kuri kufunga kukuru
• Mvura yekudyisa, chikafu chemakemikari, condenser mhepo inotorwa, uye madhiraini ekudhonza masisitimu
• Boiler vents nemadrain, main steam vents nemadrain, uye madhiraini ekupisa
• Turbine seals uye drains
• Turbine lube oiri system nevamwe