Yintoni ivalvu yebhabhathane?
A ivalvu yebhabhathaneyivalvu ejika ikota. Isetyenziselwa ukulawula okanye ukwahlukanisa ukuhamba kolwelo kwiipayipi. Ivalvu yebhabhathane kwaye ngenxa yoyilo lwayo olulula kunye nokusebenza kakuhle kwaye kuzo zonke iinkalo zobomi.
Imvelaphi yegama le-butterfly valve: i-valve flap imile okwebhabhathane kwaye ibizwa njalo.
1. Ulwakhiwo
Ivalvu yebhabhathane inamacandelo alandelayo aphambili:
- Umzimba: indlu ebamba zonke iindawo zangaphakathi kwaye iqhagamshela kumbhobho.
- Idiski: ipleyiti engqukuva ethe tyaba ngaphakathi komzimba wevalvu, elawula ukuhamba kolwelo ngokujikeleza.
- Isiqu: I-shaft edibanisa i-actuator kwi-valve flap kwaye ivumela ukuba ijikeleze.
- Isihlalo: Umphezulu wokuvala ngaphakathi komzimba wevalvu, apho i-flapper icinezela isihlalo ukuze yenze itywina elingenamoya xa ivaliwe ukuze kumiswe ukuhamba kolwelo.
- I-Actuator: Ii-actuator ezenziwe ngesandla ezifana neziphatho, ii-worm gears, kodwa kunye nezombane kunye ne-pneumatic.
Ezi zinto zidibene zenze ivalvu encinci nekhaphukhaphu ekulula ukuyifaka nokuyilungisa.
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2. Umgaqo wokusebenza
Ukusebenza kwevalvu yebhabhathane kusekelwe kwi-torque kunye ne-hydrodynamics. Imfuneko ye-torque iyahluka ngokuxhomekeke kumahluko woxinzelelo phakathi kwamacala amabini evalvu yebhabhathane kunye nendawo ye-flap yevalvu. Okunomdla kukuba, i-torque ifikelela kwi-70-80% yokuvulwa kwevalvu ngenxa ye-torque enamandla yolwelo. Olu phawu lufuna ukuhambelana ngokuchanekileyo kwe-actuator.
Ukongeza, iivalvu zebhabhathane zine-curve elinganayo yokuhamba kwe-flow, nto leyo ethetha ukuba ukulungiswa okuncinci kwi-flap kunempembelelo enkulu kwisantya sokuhamba kwe-flow kwiindawo ezivulekileyo ze-valve eziphantsi kuneendawo ezivulekileyo ezikufutshane. Oku kwenza iivalvu zebhabhathane zilungele ulawulo lwe-throttling kwiimeko ezithile, ngokuchaseneyo nenkolelo eqhelekileyo yokuba zilungele ukusetyenziswa ngokuvula/ukucima.
Iivalvu zebhabhathane zilula kwaye zisebenza kakuhle:
- Indawo evulekileyo: i-valve flap ijikeleziswa ngakwicala lolwelo, ivumela ulwelo ukuba ludlule phantse lungachaswanga.
- Indawo evaliweyo: ivalvu ijikeleza ngokuthe nkqo kwicala lolwelo, iluvala ngokupheleleyo ulwelo.
Njengevalvu ejika ikota, itshintsha phakathi kokuvuleka ngokupheleleyo nokuvaleka ngokupheleleyo ngokujikeleza ama-degree angama-90 kuphela, ngokukhawuleza nangokufanelekileyo.
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3. Izinto ezilungileyo nezingalunganga
3.1 Iingenelo zeevalvu zebhabhathane
- Incinci kwaye ilula: Incinci kwaye kulula ukuyifaka kunezinye iivalvu ezifana neevalvu zesango okanye zeglobhu.
- Eyongayo nesebenzayo: ixabiso eliphantsi ngenxa yokwakha okulula kunye nezixhobo ezimbalwa.
- Isebenza ngokukhawuleza: ingavulwa okanye ivalwe ngokujika ikota, ilungele ukusabela ngokukhawuleza kwimfuno.
- Iindleko zokulungisa eziphantsi: iindawo ezimbalwa ezishukumayo zithetha ukungonakali kakhulu kwaye kulula ukuzilungisa.
3.2 Iingxaki zeevalvu zeebhabhathane
- Ukuxinana okulinganiselweyo: akufanelekanga ukulawula ukuhamba kwamanzi ngokuchanekileyo, ingakumbi xa kuxinezelekile kakhulu, kuba kunokubangela ukuphazamiseka nokuguguleka.
- Umngcipheko wokuvuza: ezinye iindlela zoyilo zisenokungavaleki kakuhle njengezinye iintlobo zeevalvu kwaye kukho umngcipheko wokuvuza.
- Ukwehla koxinzelelo: nokuba ivuliwe, i-valve flap ihlala kwindlela yokuhamba, nto leyo ebangela ukwehla okuncinci koxinzelelo.
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4. Izicelo
Iivalvu zebhabhathane zisetyenziswa kakhulu kumashishini amaninzi ngenxa yokukwazi kwazo ukulawula ulwelo oluninzi ngaphandle kokulahlekelwa kakhulu kuxinzelelo, nto leyo eyenza ukuba zilungele imibhobho emikhulu.
Umzekelo:
- Unyango lwamanzi: ukulawula ukuhamba kwamanzi kwizityalo zokunyanga amanzi kunye neenethiwekhi zokusasaza amanzi.
- Iinkqubo ze-HVAC: zilawula ukuhamba komoya kwiinkqubo zokufudumeza, zokungenisa umoya kunye nezomoya.
- Ukucubungula iikhemikhali: Ingasetyenziselwa ukuphatha uluhlu olubanzi lweekhemikhali ngenxa yokuhambelana kwezinto.
- Ukutya Neziselo: ngenxa yeenkqubo zococeko ngenxa yokuba kulula ukuzicoca.
- Ioyile negesi: ilawula kwaye yahlula ukuhamba kweendawo ezikwiipayipi nakwiindawo zokucocisa.
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Kufuphi,iivalvu zebhabhathanelukhetho olusebenzayo nolungabizi kakhulu lokulawula ulwelo, oluxatyiswayo ngenxa yobulula balo kunye nokuguquguquka kwazo.