Pakati pevashandisi vanoshandisa mavharuvhu makuru-akareba zuva nezuva, vanhu vanowanzotaura dambudziko, kureva kuti, mavharuvhu makuru-ane diameter anogadzika kuvharika kana achishandiswa mune zvinobudisa nhau zvine kusiyana kwakakura kwazvo, kwakadai semhute,{2}}mvura inodzvanya, zvichingodaro, pakushanda pasi pekumanikidzwa. Pedyo nesimba, zvinogara zvichiwanikwa kuti pachava nekudonha, uye zvakaoma kuvhara zvakasimba. Chikonzero chedambudziko iri kushaikwa kwekugadzira dhizaini uye chiyero chemunhu chinobuda padanho rekubuda.
Ongororo Yezvinokonzeresa Zvinetso Mukuvhura uye Kuvharwa kweMakuru Caliber Valves
Simba rekupedzisira rakachinjika rekubuda remunhu mukuru i60-90kg, zvichienderana nemuviri wakasiyana.
Kazhinji, mafambiro evharuvhu yekuvhara{0}yakagadzirwa kuti ive yakaderera mukati nekukwira kunze. Kana munhu avhara vharuvhu, muviri wemunhu unosundidzira vhiri reruoko rakachinjika kufambisa dhisiki revhavha pasi kuti rivhare. Panguva ino, musanganiswa wemasimba matatu anoda kukundwa, anoti:
(1) Axial kusundira Fa;
(2) Kupokana pakati pekurongedza uye vharafu hunde Fb;
(3) Simba rekukwesha Fc rekusangana pakati pehunde yevharuvhu nepakati pevharuvhu
Torque yese ndeye ∑M=(Fa+Fb+Fc)R
Zvinogona kuonekwa kuti yakakura iyo dhayamita yekubuda, yakakura iyo axial thrust simba. Kana yava pedyo nenzvimbo yakavharwa, iyo axial thrust force inenge iri pedyo nekumanikidzika kwepombi network (nekuti P1-P2≈P1, P2=0 kana yakavharwa)
Semuyenzaniso, kana DN200 yekumisa vharafu ikashandiswa pa 10bar chiutsi pombi, chinhu chekutanga chete chinovhara axial thrust Fa=10 × πr2=3140kg, uye yakachinjika circumferential simba rinodiwa pakuvhara riri pedyo nehorizontal circumferential kubuda kwemunhuwo zvake. Muganhu wesimba, saka zvakaoma zvikuru kuti munhu mumwe avhare zvachose valve pasi pemamiriro ezvinhu akadaro ekushanda.
Zvechokwadi, mamwe mafekitari anoratidza kuti rudzi urwu rwevhavha ngauiswe kune reverse direction, iyo inogadzirisa dambudziko rekuoma kwekuvhara, asi kunewo dambudziko rekuoma kwekuvhura mushure mekuvharwa.
Ongororo Yezvikonzero Zvemukati Leakage yeMakuru Diameter Globe Mavharuvhu
Makuru-mavharuvhu ekumisa madhayamita anowanzo kushandiswa mumaboiler outlets, main sub-cylinders, steam mains, etc. Nzvimbo idzi dzine matambudziko anotevera:
(1) Kazhinji, mutsauko wekudzvanya pakubuda kwebhailer wakakura, saka mwero wekuyerera kwemuputi wakakurawo, uye kukuvadzwa kwekukukurwa kwenzvimbo yekuvharisa kwakakurawo. Uye zvakare, iyo boiler yekupisa inoshanda haigone kuita 100%, izvo zvinokonzeresa kuti mhepo inobuda mubhailer ive nehuwandu hwemvura, izvo zvinogona kukonzera cavitation uye cavitation kukuvadzwa kwevhavha sealing surface.
(2) Pakuvhara{{1}vharuvhu padhuze nepanobudisira bhaira ne-cylinder, nekuti chiutsi chiri kubuda muboiler chine nguva nenguva yekupisa, panguva yekuzara, kana mvura yekunyorovesa mvura isina kunyatsonaka, chikamu chayo chinowanzonaya. Acid uye alkali zvinhu zvinokonzeresa ngura uye kukukurwa panzvimbo yakavhara; zvimwe crystallizable zvinhu zvinogonawo kunamatira kuvharuvhu sealing pamusoro uye crystallize, zvichiita kuti vharafu itadze kunama zvakasimba.
(3) Sub-cylinder inlet uye mavharuvhu ekubuda nawo. Huwandu hwemhepo inoshandiswa mushure mevhavha dzimwe nguva yakakura kana idiki nekuda kwezvinodiwa zvekugadzira uye zvimwe zvikonzero. Kana chiyero chekuyerera chichichinja zvakanyanya, zviri nyore kukonzera kupenya, cavitation, etc. Kukonzera erosion, cavitation uye zvimwe zvinokuvadza zvinokonzerwa nevhavha yekuvhara pamusoro.
4 Nekudaro, mukuita uku, kuvhurika kwevharuvhu kunowanzo kudiki kwazvo, zvichiita kuti kukukurwa kwevhu kuve kwakakura kudarika kushandiswa kwakajairwa, uye kudzikisa zvakanyanya hupenyu hwebasa revhavha yekuvharisa pamusoro.
Mhinduro kune Kuoma Kuvhura uye Kuvhara kweMakuru Diameter Globe Mavharuvhu
(1) Chekutanga, zvinokurudzirwa kuti usarudze vheruvhu-yakavharika vharuvhu kudzivirira kuvhiringika kwevharuvhu yeplunger nevharuvhu yekurongedzera uye kuita kuti switch ive nyore.
(2) Iyo yepakati pevhavha uye chigaro chinofanira kugadzirwa nezvinhu zvine kunaka kwekukukurwa uye kupfeka zvivakwa, seStellite cemented carbide;
(3) Inokurudzirwa kutora kaviri valve disc chimiro, iyo isingazokonzeri kukukurwa kwakanyanya nekuda kwekuvhura kudiki, izvo zvinokanganisa hupenyu hwebasa uye chisimbiso chekuita.
