Kuenzaniswa nevharafu yegedhi, globe valve uye cheki dhizaini dhizaini, nhoroondo yevharuvhu yebhora ipfupi.Kunyangwe patent yekutanga yevharuvhu yakapihwa muna 1871, zvinotora makore makumi masere nemashanu kuti vharafu yebhora ibudirire mune zvekutengesa.Polytetrafluoroethylene (PTFE, kana kuti “Teflon”) yakawanikwa panguva yekugadzira bhomba reatomu munguva yeHondo Yenyika II, inova inokonzeresa kutanga indasitiri yevharuvhu yebhora.Mavharuvhu ebhora anowanikwa mune zvese zvinhu kubva kundarira kusvika kusimbi kabhoni uye simbi isina tsvina kusvika zirconium.

Kune marudzi maviri akakosha: mabhora anoyangarara uye trunnion balls.Aya madhizaini maviri anobvumira kuvakwa kwemavharuvhu ebhora anoshanda kubva pa¼ "kusvika pa60" uye akakura.Kazhinji, dhizaini inoyangarara inoshandiswa kune madiki uye akadzika mavharuvhu ekumanikidza, nepo trunnion mhando inoshandiswa kune yakakura uye yepamusoro yekumanikidza mavharuvhu maapplication.

VM SUM21 Bhora Purogiramu 6Dbhora vharafuAPI 6D bhora vharafu inoshandisa marudzi maviri aya emavharuvhu ebhora nekuda kwenzira dzekuisa chisimbiso uye kuti simba remvura rinoyerera sei kubva papombi kuenda kubhora rozogovera kuchigaro chevharuvhu.Mukugadzirwa kwebhora rinoyangarara, bhora rinokwana zvakasimba pakati pezvigaro zviviri, imwe kumusoro uye imwe yakadzika.Simba remvura rinoshanda pabhora, richirisundira muchigaro chevharuvhu chiri mumutumbi wevharuvhu yakadzika.Sezvo bhora richivhara gomba rose rekuyerera, simba rese riri mukuyerera rinosunda bhora kuti rimanikidzire kupinda muchigaro chevharuvhu.Kana bhora rakanyanya kukura uye kudzvinyirira kwakanyanya, simba riri pachigaro chevhavha richava rakakura, nokuti torque yekushanda yakakura uye valve haigoni kushandiswa.

Mavharuvhu ebhora anoyangarara ane akasiyana masitaera emuviri, asi inonyanya kufarirwa ndeye maviri-chidimbu magumo ekupinda mhando.Mamwe masitaera emuviri anosanganisira matatu-chidimbu uye epamusoro kupinda.Mavharuvhu ebhora anoyangarara anogadzirwa muhukuru anosvika 24 ″ uye 300 mamakisi, asi iwo chaiwo mashandisirwo emhando yemavharuvhu anoyangarara anoyangarara anowanzo kuderera zvakanyanya-yepamusoro inenge 12 ″.

Kunyangwe mavharuvhu ebhora akagadzirwa zvakanyanya sepa / kudzima kana "kumisa" mavharuvhu, kuwedzerwa kwemamwe mavharuvhu ebhora uye V-chiteshi.bhora vharafumagadzirirwo anoita kuti ive yakanaka kune inodzorwa maapplication.

Elastic seat
VM SUM21 BHORA FANGEDWE Bhora Vharavharufu Mavharuvhu ebhora madiki anoyangarara anogona kushandiswa mukushandisa kwakasiyana siyana, kubva papombi dzemumba kusvika papombi dzine makemikari anonyanya kudiwa.Iyo inonyanya kufarirwa chigaro mavharuvhu ndeimwe yemhando yethermoplastic, yakadai sePTFE.Teflon zvigaro zvevharuvhu zvinoshanda zvakanaka nekuti zvakapfava zvekunamira zvakanaka pamabhora esimbi akakwenenzverwa, asi akasimba zvekusaputika kubva muvharuvhu.Matambudziko maviri makuru ane mavharuvhu ezvigaro akapfava aya ndeekuti ari kukwenya nyore nyore (uye anogona kubuda), uye tembiricha inogumira pazasi penzvimbo inonyungudika yechigaro chethermoplastic-yakakomberedza 450oF (232oC), zvichienderana nechigaro.

Chinhu chemavharuvhu mazhinji ezvigaro anoyangarara anoyangarara ndechekuti anogona kunyatsovharwa kana moto ukaita kuti chigaro chikuru chinyunguduke.Izvi zvinonzi dhizaini isingapindi moto;ine homwe yechigaro iyo isingabatiki chete chigaro che elastic panzvimbo, asiwo inopa chigaro chesimbi chepamusoro chinopa chisimbiso chechidimbu kana chasangana nebhora.Maererano neAmerican Petroleum Institute (API) 607 kana 6FA moto test standards, valve inoedzwa kuti isimbise moto wekudzivirira moto.

Trunnion design
APIMusiyano pakati pe trunnion nerudzi runoyangarara ndewekuti bhora re trunnion rinogadzikwa mumutumbi mukuru nepasi trunnion (pfupi yekubatanidza tsvimbo) uye tsvimbo yepamusoro.Sezvo bhora risingakwanisi "kuyangarara" muchigaro chevhavha kuti riwane kuvharwa kwekumanikidza, chigaro chevharuvhu chinofanira kuyangarara pabhora.Magadzirirwo echigaro chetrunnion anoita kuti chigaro chisimudzirwe nekudzvanywa kwekumusoro kwemvura uye kumanikidzwa kupinda musphere kuti chisimbiso.Nekuti bhora rakanyatsomira panzvimbo, kunze kwekutenderera kwaro 90o, iyo inoshamisa fluid simba uye kudzvanywa hakuzojamidzira bhora muchigaro chevharuvhu.Pane kudaro, simba racho rinongoshanda panzvimbo duku kunze kwechigaro chinoyangarara.

VM SUM21 BHORA End inlet dhizaini Iyo yekupedzisira inlet dhizaini trunnion bhora vharafu ndiyo ine simba mukoma weiyo inoyangarara bhora vharafu, saka inokwanisa kubata mabasa makuru-yakakwirira kumanikidza uye hombe pombi madhayamita.Kusvika kure, iyo inonyanya kufarirwa kushandiswa kwetrunnion bhora mavharuvhu iri mumasevhisi epombi.