Ngatitangei kusuma kuti ndeupi musiyano uripo pakati pevharuvhu neagedhi vharafu.
01
Chimiro
Kana nzvimbo yekuisa ishoma, teerera kusarudzwa:
Thegedhi vharafuinogona kuvimba nepakati pekumanikidza kuvhara zvakasimba nzvimbo yekuisa chisimbiso, kuitira kuti uwane mhedzisiro yekusadonha. Pakuvhura nekuvhara, iyo yevhavha yepakati uye yekuisa chisimbiso chechigaro chevhavha inogara yakabatana uye ichikweshana, saka iyo yekuisa chisimbiso iri nyore kupfeka, uye kanagedhi vharafuiri pedyo nekuvhara, mutsauko wepakati pakati pemberi uye kumashure kwepombi yakakura kwazvo, izvo zvinoita kuti chisimbiso chepamusoro chipfeke zvakanyanya.
Chimiro chegedhi vharafuichave yakanyanya kuomarara kupfuura vharuvhu yepasirese, kubva pachitarisiko chekutarisa, kana iri iyo yakafanana caliber, gedhi vharafu yakakwirira kupfuura globe vharafu, uye vharafu yeglobhu yakareba kupfuuragedhi vharafu. Mukuwedzera, thegedhi vharafuyakakamurwa kuva tsvimbo yakajeka uye tsvimbo yakasviba. Kuvhara-kuvhara mavharuvhu haaiti.
Zvinoshanda sei
Kana iyo globe valve yakavhurwa uye yakavharwa, itsinde inosimuka, ndiko kuti, kana handwheel ichitenderedzwa, handwheel inotenderera nekusimudza ne stem. Thegedhi vharafundiko kutenderedza vhiri remaoko kuita kuti dzinde revharuvhu riite kusimudza kufamba, uye nzvimbo yehandwheel pachayo inoramba isina kuchinja.
Kuyerera kwemitengo inosiyana, negedhi mavharuvhuinoda kuvhurika kuzere kana kuvharwa kuzere, nepo mavharuvhu epasi asingadaro. Iyo globe valve ine yakatsanangurwa yekupinda uye yekubuda nzira, uye iyogedhi vharafuhaina inopinza uye yekubuda nzira inodiwa.
Mukuwedzera, thegedhi vharafuchete ine nyika mbiri: yakazara yakazaruka kana yakavharwa zvakakwana, uye shamhu yekuvhura nekuvhara kwegedhi ndiro yakakura kwazvo, uye yekuvhura nekuvhara nguva yakareba. Iyo yekufamba sitiroko yevharuvhu yevharuvhu idiki zvakanyanya, uye ndiro yevharuvhu yevharuvhu inogona kumira pane imwe nzvimbo mukufamba kwekugadzirisa kuyerera. Thegedhi vharafuinogona kungoshandiswa kuita truncation uye haina mamwe mabasa.
Kusiyana kwemaitiro
Iyo globe valve inogona kushandiswa kune ese akachekwa-kubvisa uye kuyerera mutemo. Kupikiswa kwemvura yevharuvhu yeglobe yakakura, uye zvinonetsa kuvhura nekuvhara, asi nekuda kwekuti chinhambwe chiri pakati peplate yevharuvhu nenzvimbo yekuvharisa ipfupi, kuvhura nekuvhara sitiroko ipfupi.
Nokuti iyogedhi vharafuinogona chete kuvhurwa zvizere uye kuvharwa, kana yavhurwa zvizere, iyo yepakati kuyerera kupikisa muvhavhavha yemuviri chiteshi ingangoita 0, saka kuvhurwa nekuvhara kweiyo.gedhi vharafuichave yakanyanya kuponesa basa, asi gedhi ndiro riri kure nenzvimbo yekuisa chisimbiso, uye yekuvhura nekuvhara nguva yakareba.
04
Kuiswa uye nzira yekuyerera
Mhedzisiro yegedhi vharafukuyerera nzira mumativi ese akafanana, hapana chinodiwa chekupinda nekubuda nzira yekuisa, uye yepakati inogona kuyerera mumativi ese. Iyo globe valve inoda kuiswa zvakanyatsoenderana negwara rakatarwa nemuseve wemuviri wevharuvhu, uye pane hurongwa hwakajeka pagwara rekupinda nekubuda kwevharuvhu, uye mafambiro evhavhavhavhavhavhavhavhu. inotorwa kubva kumusoro kusvika pasi maererano ne "shanduko nhatu" dzevharuvhu yeChina.
Ivhavha yekuvhara yakaderera mukati uye yakakwirira kunze, uye kubva kunze kune pombi yakajeka iyo isiri pamwero wechikamu chimwe. Thegedhi vharafunzira yekuyerera iri pamutsetse wakachinjika. Kurohwa kwegedhi vharafuyakakura kudarika yevharuvhu yepasi.
Kubva pakuona kwekuyerera kwekudzivirira, kana yakazaruka zvakakwana, kuyerera kwevhavha yegedhi kuduku, uye kuyerera kwekudzivirira kwevhavha yekumisa mutoro yakakura. Iyo inoyerera inopikisa coefficient yeyakajairwagedhi vharafuinenge 0.08 ~ 0.12, simba rekuvhura nekuvhara idiki, uye yepakati inogona kuyerera nemativi maviri. Kuyerera kwekupokana kweakajairwa globe mavharuvhu ndeye 3-5 nguva iyo yegedhi mavharuvhu.Kuvhura nekuvhara kunoda kumanikidzwa kuvhara kuti uwane chisimbiso, iyo spool yeglobe valve yakavharwa zvachose kana ichibata nzvimbo yekuisa chisimbiso, saka kupfeka kwechisimbiso kudiki kwazvo, nekuda kwekuyerera kukuru kwesimba guru kusvika. wedzera actuator yeglobe valve inofanirwa kuterera kune torque control mechanism kugadzirisa.
Pane nzira mbiri dzekuisa globe valve, imwe ndeyokuti iyo yepakati inogona kupinda kubva pasi pe spool, iyo inobatsira ndeyokuti kurongedza hakuna kudzvinyirirwa kana valve yakavharwa, iyo inogona kuwedzera hupenyu hwebasa rekutakura, uye inogona kutsiva. kurongedza apo pombi pamberi pevhavha iri pasi pekumanikidzwa; Izvo zvisingabatsiri ndezvokuti torque yekufambisa yevhavha yakakura, iyo inenge 1 nguva iyo yekuyerera kwepamusoro, iyo axial simba revhavha stem yakakura, uye tsinga yevhavha iri nyore kukotama.
Naizvozvo, nzira iyi inowanzokodzera mavharuvhu madiki-diameter eglobhu (DN50 kana pasi), uye mavharuvhu eglobhu ari pamusoro peDN200 anoshandisa svikiro rinoyerera richibva kumusoro. (Mavharuvhu eglobhu emagetsi anowanzo shandisa svikiro kupinda kubva kumusoro.) Kuipa kwenzira yekupinda midhiya kubva kumusoro inonyatsopesana neyepasi yekupinda nzira.
05
Kuisa chisimbiso
Iyo yekuisa chisimbiso pamusoro pevhavha yeglobe idiki trapezoidal parutivi rwevhavha core (kunyatso tarisa chimiro chevhavha core), kana iyo yevhavha yepakati ichidonha, yakaenzana nevhavha yekuvhara (kana mutsauko wekumanikidza wakakura, chokwadi, kuvharwa hakusi kwakasimba, asi cheki mhedzisiro haina kuipa), iyogedhi vharafuyakavharwa padivi pevhavha yepakati gedhi ndiro, yekuisa chisimbiso haina kunaka sevhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavha ichivharika, uye vheji yevharuvhu haizodonha sevharuvhu yakaenzana nevharuvhu yekuvhara.
Nguva yekutumira: Kubvumbi-08-2023
