Kusiyana aakati ka globe valve a gate valve, ino inga wasala biyeni?

Atutondezye kuti nkwiindana kuliko aakati ka globe valve avvalavu yamulyango.

01

Chibumbwa

Aawo busena bwakubikkila nobuli buniini, kobikkila maanu kukusala:

Chivvalavu yamulyangoulakonzya kusyoma munguzu zili akati-akati kuti ajale kabotu busena bwakujala, kuchitila kuti kutabi kuvwundauka. Notujalula akujala, ntalisyo ya valve antoomwe abusena bwakujala bwa valve seat lyoonse zilajatana akuswidana, aboobo busena bwakujala bulaubauba kusama, mpawo aawovvalavu yamulyangouli afwaafwi kujalwa, musiyano wakusinikizyigwa aakati kakunembo akusule lyamupayipi mupati loko, eezyo zipa kuti busena bwakujala bube bupati.

Bupange bwavvalavu yamulyangochiyooba chiyumu kwiinda vvalavu ya globe, kuzwa mukulanga, muchiimo cheegubi lyomwe, vvalavu yamulyango ilisumpukide kwiinda vvalavu ya globe, mpawo vvalavu ya globe njilamfwu kwiindavvalavu yamulyango. Mukuyungizya,vvalavu yamulyangochaandaanizyigwa kuba musako uumweka amusako uusiya. Mavalvu aakujala taakonzyi pe.

Mbuti mboibeleka

Eelyo vvalavu lyanyika nolijulwa akujalwa, nchintu chitanta, nkokuti, aawo vwili lyamaanza nolizungaanisigwa, vwili lyamaanza lilazungaana akutanta antoomwe achisiko. Chivvalavu yamulyangonkuzungaanya vwili lyamaanza kuchitila kuti chisiko cha valve chichite kweenda, mpawo busena bwavwili lyamaanza tabuchinchi pe.

Mweelwe wamaanzi ulaandeene, amavalvu aamulyangokuyandika kujalula koonse naa kujala koonse, kakuli mavwili aa globe taali boobo pe. Ivalvu ya globe ilijisi nzila yakunjilila akuzwa, mpawovvalavu yamulyangotaakwe zyeelelo zyakunjila akuzwa.

Mukuyungizya,vvalavu yamulyangoilijisi buyo ziimo zyobile: kujaluka koonse naa kujala koonse, mpawo kujalula akujala kwachipulo chamulyango nkupati loko, mpawo chiindi chakujalula akujala nchilamfu. Ikweenda kwa pulati ya valve ya globe valve nkusyoonto loko, mpawo valve plate ya globe valve ilakonzya kwiima abusena bumwi mukweenda kuchitila kuti kweendeenda kweende kabotu. Chivvalavu yamulyangoilakonzya kubelesegwa biyo mukukosola mpawo taikwe milimu imwi pe.

Kusiyana kwakubeleka

Ivalvu ya globe ilakonzya kubelesegwa kugela akubamba kweenda. Ikukazyigwa kwamaanzi kwa valve ya globe nkupati, alimwi nkuyumu kujalula akujala, pesi nkaambo kakuti musinzo akati ka valve plate abusena bwakujala mbufwiifwi, kujalula akujala nkufwiifwi.

Nkaambo kakutivvalavu yamulyangoilakonzya buyo kujalulwa akujalwa, aawo noijalulwa, kukazyigwa kwakuzuza kwamukati-kati mumugwagwa wa valve kuli afwaafwi kusika ku 0, aboobo kujalulwa akujalwa kwavvalavu yamulyangochiyoogwasya kukwabilila chiindi chilamfu, pesi chivwumbyo chamulyango chili kule aawo mpochijala, mpawo chiindi chakujalula akujala nchilamfu.

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Kubikka anzila yakutobelezya

Ikugwasya kwavvalavu yamulyangonzila yakuzuza mumabazu oonse obile njiyonya, kunyina kuyandika kwakunjila akuzwa mukubikka, mpawo zyintu zili mukati zilakonzya kweenda mumabazu oonse obile. Ivalvu ya globe yeelede kubikkwa kweendelana anzila iitondezyedwe amusemu wamubili wa valve, alimwi kuli bubambe busalala kujatikizya nzila yakunjilila akuzwa kwa globe valve, alimwi nzila yakuzuza ya globe valve ilatobelwa kuzwa atala kuya ansi kweendelanya a “kusanduka kotatwe” kwa valve yaku China.

Ivalvu yakujala ili munsi-munsi mpawo ili atala anze, mpawo kuzwa anze kuli payipi lisalazya litali aachiimo cha phase yomwe. Chivvalavu yamulyangonzila yakuzuza ili mumuzila uulangene. Kutyompokelwa kwavvalavu yamulyangoncipati kwiinda eecho cha globe valve.

Kuzwa mukulanga kwakukazya kweenda, aawo nokwajulwa, kukazyigwa kweenda kwavalvu yamulyango nkusyoonto, mpawo kukazyigwa kweenda kwavalvu yakulesya mukuli nkupati. Ikweezyanisya kweenda kwamaanzi kwabuzubaa buzubavvalavu yamulyangozili afwaafwi a 0.08~0.12, manguzu aakujalula akujala masyoonto, mpawo aakati kalakonzya kweenda mumabazu obile. Kukazyigwa kweenda kwamavalvu aama globe kuli ziindi zili 3-5 kwiindamavalvu aamulyango.Kujalula akujala kuyandika kusinikizyigwa kujala kuchitila kuti kube kujala, ntalisyo ya globe valve ilajalwa loko aawo noijatika aawo mpoijala, aboobo kubola kwabusena bwakujala nkusyoonto loko, akaambo kakuzuza kupati kwanguzu zipati zyakuyungizya actuator ya globe valve weelede kubikkila maanu ku torque control mechanism adjustment mechanism.

Kuli nzila zyobile zyakubikka vvalavu ya globe, yomwe njakuti chintu chikonzya kunjila kuzwa munsi lya vvalavu, bubotu mbwakuti kupaka takukwe nguzu aawo vvalavu noijalidwe, zikonzya kuyungizya buumi bwakupaka, mpawo zilakonzya kuchincha bbaaji eelyo payipi lili kunembo lya vvalavu nolili munsi lyamuwo; Bubi mbwakuti nguzu zyakweenzya zya valve nzipati, eezyo zili 1 ziindi zyaatala, nguzu zya axial zya valve stem nzipati, alimwi valve stem ncuuba-uba kugonka.

Aboobo, eeyi nzila kanjikanji ileelela buyo kumavalvu aa globe masyoonto (DN50 naa aansi), alimwi ma globe valve aali atala a DN200 abelesya nzila iizwa atala. (Mavalvu aamagesi kanjikanji abelesya nzila yakunjila kuzwa atala.) Bubi bwanzila yakunjila kuzwa atala mbuimpene anzila yakunjila munsi.

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Kujala

Busena bwakujala bwa valve bwa globe mbubbazu buniini bwa trapezoidal bwa valve core (amulangisisye bupange bwa valve core), aawo valve core niyawa, chili mbuli kujala kwa valve (ikuti kwiimpana kwakusinikizyigwa nkupati, masimpe, kujala takuli kwanguzu pe, pesi kulanga-langa takuli kubi),vvalavu yamulyangochilijalilidwe kumbali aamulyango wamulyango wamulyango, kujala takuli kabotu mbuli mulyango wa globe, mpawo mulyango taukonzyi kuwa mbuli mulyango wa globe weelene akujala kwa valv.