Ukuqonda iiValve zoLawulo lweSteam

Ukuze ngaxeshanye kuncitshiswe uxinzelelo kunye nobushushu bomphunga ukuya kwinqanaba elifunekayo kwimeko ethile yokusebenza, umphungaiivalvu ezilawulayoEzi zicelo zihlala zinexinzelelo lokungena eliphezulu kakhulu kunye namaqondo obushushu aphezulu, zombini ezo zinto kufuneka zincitshiswe kakhulu. Ngenxa yoko, ukubumba kunye nokudibanisa ziinkqubo zokuvelisa ezikhethwayo kweziivalvuimizimba kuba inokugcina umthwalo womphunga ngcono xa uxinzelelo oluphezulu kunye nobushushu obuphezulu. Izinto ezenziweyo zivumela uxinzelelo olukhulu kuyilo kune-castivalvuimizimba, inesakhiwo sekristale esiphuculweyo, kwaye inobume obuhambelanayo bezinto ezibonakalayo.

Abavelisi banokubonelela ngokulula ngamabakala aphakathi ukuya kuthi ga kwiKlasi 4500 ngenxa yesakhiwo esenziwe ngomatshini. Xa uxinzelelo kunye namaqondo obushushu esezantsi okanye kufuneka ivalvu engaphakathi, imizimba yeevalvu ezibunjiweyo iselukhetho oluqinileyo.

Uhlobo lomzimba wevalvu edityanisiweyo kunye ne-forged plus combination valve luvumela ukufakwa kwe-extended outlet ukulawula isantya somphunga wokuphuma kwiingcinezelo eziphantsi ukuphendula utshintsho olukhulu oluqhelekileyo kwiimpawu zomphunga olubangelwa kubushushu obuphantsi kunye noxinzelelo. Ngokufanayo noku, abavelisi banokubonelela ngonxibelelwano lokungena kunye ne-outlet olunemilinganiselo eyahlukeneyo yoxinzelelo ukuze bahambelane ngcono nemibhobho ekufutshane ukuphendula uxinzelelo oluphantsi lokukhupha ngokusebenzisa iivalvu zolawulo lomphunga ezidityanisiweyo kunye ne-forged plus combination.

Ukongeza kwezi nzuzo, ukudibanisa imisebenzi yokupholisa kunye nokunciphisa uxinzelelo kwivalvu enye kunezi nzuzo zilandelayo kwiiyunithi ezimbini ezahlukeneyo:

1. Ukuxuba amanzi okutshiza ngcono ngenxa yokuba indawo yokwandisa yento yokunciphisa uxinzelelo iyaphuculwa.

2. Umlinganiselo oguquguqukayo ophuculweyo

3. Ukufakela nokulungisa kulula kakhulu kuba sisixhobo esincinci.

Singabonelela ngeendidi ngeendidi zeevalvu zokulawula umphunga ukuze kuhlangatyezwane neemfuno ezahlukeneyo zesicelo. Nazi ezinye zeemeko eziqhelekileyo.

ivalvu yokulawula umphunga

Ivalvu yokulawula umphunga, ebonakalisa ubushushu bomphunga kunye nobuchwepheshe bokulawula uxinzelelo, idibanisa uxinzelelo lomphunga kunye nolawulo lobushushu kwiyunithi enye yolawulo. Ngenxa yokukhula kwamaxabiso amandla kunye neemfuno zokusebenza kwezityalo ezingqongqo, ezi valves ziphendula imfuno yolawulo olungcono lomphunga. Ivalvu yokulawula umphunga inokubonelela ngolawulo olukhulu lobushushu kunye nokunciphisa ingxolo kunesikhululo sokunciphisa ubushushu kunye noxinzelelo esinomsebenzi ofanayo, kwaye ayithintelwa kakhulu ziimfuno zepayipi kunye nokufakelwa.

Iivalvu ezilawula umphunga zinevalvu enye elawula uxinzelelo kunye nobushushu. Uyilo, uphuhliso, ukuphuculwa kobume besakhiwo, kunye nokwenza ngcono ukusebenza kunye nokuthembeka ngokubanzi kweevalvu kwenziwa kusetyenziswa i-Finite Element Analysis (FEA) kunye ne-Computational Fluid Dynamics (CFD). Ulwakhiwo oluqinileyo lwevalvu yokulawula umphunga lubonisa ukuba inokumelana nokuhla koxinzelelo lonke lomphunga oyintloko, kwaye ukusetyenziswa kwetekhnoloji yokunciphisa ingxolo yevalvu yokulawula kwindlela yokuhamba kunceda ukunciphisa ingxolo engafunekiyo kunye nokungcangcazela.

Utshintsho olukhawulezayo lobushushu olwenzeka ngexesha lokuqalisa i-turbine lunokwamkelwa luyilo lwe-trim olucwangcisiweyo olusetyenziswa kwiivalvu zolawulo lomphunga. Ukuze ihlale ixesha elide kwaye ivumele ukwanda xa iphambukiswe kukutshayiswa kobushushu, ikheyiji iyaqiniswa. I-valve core inesikhokelo esiqhubekayo, kwaye i-cobalt inserts zisetyenziselwa ukuvelisa isitywina sesinyithi esiqinileyo kunye nesihlalo sevalvu ukongeza ekunikezeni izixhobo zesikhokelo.

Ivalvu elawula umphunga ine-manifold yokutshiza amanzi xa uxinzelelo lunciphile. I-manifold inee-nozzles ezisebenza ngoxinzelelo lwangasemva kunye ne-geometry eguquguqukayo yokuphucula ukuxubana kwamanzi kunye nokuphuma komphunga.

Uxinzelelo lomphunga olusezantsi lweenkqubo zokuxinana ezikwindawo ephakathi, apho iimeko zokugcwala zinokwenzeka khona, kulapho le nozzle yayicetyelwe ukusetyenziswa khona ekuqaleni. Olu hlobo lwe nozzle luphucula ukuguquguquka kwesixhobo ngokuvumela ukuhamba okuncinci okuncinci. Oku kwenziwa ngokunciphisa uxinzelelo olungasemva kwi nozzle ye-dP. Enye inzuzo kukuba i-flash yenzeka kwindawo yokuphuma kwe nozzle endaweni ye-sprinkler valve trim xa i-nozzle dP inyuswa kwiindawo ezincinci.

Xa kuvela ifleshi, umthwalo wespring wevalvu kwi-nozzle uyayityhala ivale ukuze kuthintelwe naluphi na utshintsho olunjalo. Ukucinezeleka kolwelo kuyatshintsha ngexesha lefleshi, nto leyo ebangela ukuba i-nozzle spring iyinyanzele ukuba ivale ize iphinde icinezele ulwelo. Ukulandela ezi nkqubo, ulwelo lubuyela kwimeko yalo yolwelo kwaye lunokutshintshwa lube yi-cooler.

I-geometry eguquguqukayo kunye nee-nozzles ezisebenzayo zoxinzelelo lomqolo

Ivalvu yokulawula umphunga iqondisa ukuhamba kwamanzi ukusuka eludongeni lombhobho ukuya embindini wombhobho. Ngezicelo ezahlukeneyo kuza amanani ahlukeneyo eendawo zokutshiza. Ububanzi bokuphuma kwevalvu yokulawula buya kwandiswa kakhulu ukuze kuhlangatyezwane nomthamo ophezulu womphunga ofunekayo ukuba umahluko woxinzelelo lomphunga ubalulekile. Ukuze kufezekiswe ukusasazwa ngokulinganayo nangokucokisekileyo kwamanzi atshiziweyo, ii-nozzles ezingaphezulu zibekwe zijikeleze umbhobho wokuphuma.

Ulungiselelo olucwangcisiweyo lwe-trim kwi-valve elawula umphunga luvumela ukuba isetyenziswe kumaqondo obushushu aphezulu okusebenza kunye novavanyo loxinzelelo (ukuya kwi-ANSI Class 2500 okanye ngaphezulu).

Ulwakhiwo lweplagi elungelelanisiweyo yevalvu yokulawula umphunga lubonelela ngeempawu zokutywina zeClass V kunye nokuhamba komgca. Iivalvu zokulawula umphunga zihlala zisebenzisa ii-digital valve controllers kunye nee-high performance pneumatic piston actuators ukugqiba i-stroke epheleleyo ngaphantsi kwemizuzwana emi-2 ngelixa zigcina impendulo yenyathelo elichanekileyo.
Iivalvu ezilawula umphunga zinokubonelelwa njengezinto ezahlukeneyo ukuba ulungiselelo lwepayipi lufuna oko, okuvumela ulawulo loxinzelelo emzimbeni wevalvu kunye nokunciphisa ubushushu kwi-steam cooler esezantsi. Ukongeza, ukuba akunakwenzeka ngokwezimali, kukwakholeleka ukudibanisa ii-plug-in desuperheaters kunye nemizimba yeevalvu ezicwangcisiweyo.