Pakati pevashandisi vanoshandisa mavharuvhu makuru-diameter eglobe zuva nezuva, vanowanzo taura dambudziko rekuti mavharuvhu makuru-diameter anowanzo kunetsa kuvhara kana achishandiswa munhau nemusiyano wakakura wekumanikidza, senge chiputi, high-pressure. mvura, nezvimwewo Pakuvhara nechisimba, nguva dzose inowanikwa kuti pachava nekuputika, uye zvakaoma kuvhara zvakasimba. Chikonzero chechinetso ichi chinokonzerwa nekugadzirwa kwemaitiro evhavha uye kusakwana kwekubuda torque yezinga remunhu.

Ongororo yeKuomerwa Kwekuchinja Yakakura Diameter Mavharuvhu

Avhareji yemunhu mukuru yakatwasuka muganhu wekuburitsa simba i60-90kg, zvichienderana nemuviri wakasiyana.

Kazhinji, kuyerera kwevhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavha maitirwo ekufamba kwakadzikira mukati nepamusoro kunze. Kana munhu avhara vharuvhu, muviri wemunhu unosundidzira vhiri reruoko kuti utenderere wakatarisa, kuitira kuti vharafu yevharuvhu iende pasi kuti ione kuvhara. Panguva ino, zvakakosha kukunda kusanganiswa kwemasimba matatu, anoti:

(1) Axial thrust force Fa;

(2) Kukwesha simba Fb pakati pekurongedza uye vharafu hunde;

(3) The contact friction force Fc pakati pevharuvhu hunde uye valve disc core

Huwandu hwenguva ∑M=(Fa+Fb+Fc)R

Zvinogona kuonekwa kuti iyo yakakura dhayamita, iyo yakakura iyo axial thrust simba. Kana iri pedyo nenzvimbo yakavharwa, iyo axial thrust force inenge iri pedyo nekumanikidzika kwepombi network (nekuda kweP1-P2≈P1, P2 = 0)

Semuyenzaniso, DN200 caliber globe valve inoshandiswa pa 10bar steam pombi, chete yekutanga kuvhara axial thrust Fa = 10×πr2=3140kg, uye yakatwasuka denderedzwa simba rinodiwa pakuvhara riri padyo neyakachinjika denderedzwa simba rinogonekwa nemiviri yevanhu. output. simba muganhu, saka zvakaoma zvikuru kuti munhu mumwe avhare zvizere valve pasi pemamiriro ezvinhu aya.

Zvechokwadi, mamwe mafekitari anokurudzira kuisa mavharuvhu akadaro kumashure, izvo zvinogadzirisa dambudziko rekuoma kuvhara, asi panewo dambudziko iro rakaoma kuvhura mushure mekuvhara.

Ongororo yeZvikonzero Zvemukati Leakage yeLarge Diameter Globe Valves

Mahombe-diameter eglobhu mavharuvhu anowanzo shandiswa mumaboiler outlets, main cylinders, steam mains nedzimwe nzvimbo. Nzvimbo idzi dzine matambudziko anotevera:
(1) Kazhinji, mutsauko wekudzvanya panzvimbo yekuvharisa wakakura, saka mwero wekuyerera kweutsi wakakurawo, uye kukuvara kwekukukurwa kwenzvimbo yekuvharisa kwakakurawo. Uye zvakare, kupisa kwemoto kweiyo boiler hakugone kuita 100%, izvo zvinokonzeresa kuti mhepo inobuda mubhailer ive nehuwandu hwemvura, izvo zvinokonzeresa kukuvadzwa kwecavitation uye cavitation kuvhavha yekuvhara.

(2) Yevhavha yekumisa padhuze nekubuda kweboiler uye sub-cylinder, nekuti chiutsi chichangobva kubuda mubhailer chine chiitiko chinopisa chinopisa, mukati mekuzara kwayo, kana kunyorova kwemvura yekubikira. haina kunyanya kunaka, chikamu chemvura chinowanzonaya. Acid uye alkali zvinhu zvinokonzeresa ngura uye kukukurwa kune yakavharika pamusoro; zvimwe zvinhu zvinopenya zvinogonawo kunamatira kune chisimbiso pamusoro pevharuvhu uye kupenya, zvichikonzera kuti vharafu isakwanise kuvhara zvakasimba.

(3) Kune mavharuvhu ekupinza uye ekubuda ma sub-cylinders, kushandiswa kweutsi mushure mevhavha yakakura uye dzimwe nguva idiki nekuda kwezvinodiwa zvekugadzira uye zvimwe zvikonzero. Kukonzeresa kukukurwa, cavitation uye kumwe kukuvadza kune iyo valve yekuisa chisimbiso pamusoro.

4 pamberi pevhavha yekumisa inogona kuvhurwa zvizere kudzivirira kukonzeresa kukuvara kwepombi. Iko kukurumidza kupisa kunokonzera kuwedzera kwakanyanya, izvo zvinokuvadza zvimwe zvikamu zvekubatanidza. Nekudaro, mukuita uku, kuvhurika kwevharuvhu kunowanzo kudiki, izvo zvinoita kuti chiyero chekukukurwa chive chakakura kwazvo kupfuura chinowanzoitika chekushandisa, uye zvakanyanya kudzikisa hupenyu hwebasa revhavha yekuvharisa pamusoro.

Mhinduro kune Matambudziko Mukuchinja Yakakura Diameter Globe Mavharuvhu

(1) Chekutanga pane zvese, zvinokurudzirwa kusarudza bhero-yakavharwa globe vharafu, iyo inodzivirira pesvedzero yekupokana kweiyo plunger vharafu uye yekurongedza vharafu, uye inoita kuti shanduko ive nyore.

(2) Iyo yepakati yevharuvhu uye chigaro chevharuvhu chinofanira kugadzirwa nezvinhu zvine kunaka kwekukukurwa kwevhu uye kupfeka kushanda, seStellite carbide;

(3) Inokurudzirwa kutora kaviri valve disc chimiro, iyo isingazokonzeri kukukurwa kwakanyanya nekuda kwekuvhura kudiki, izvo zvinokanganisa hupenyu hwebasa uye chisimbiso chekuita.