Ngaba uyazibuza ukuba ivalve yePVC inokumelana noxinzelelo lwenkqubo yakho? Impazamo inokukhokelela ekuvuthelweni kweendleko kunye nexesha lokunciphisa. Ukwazi umda woxinzelelo oluchanekileyo linyathelo lokuqala lokufakela okukhuselekileyo.
Uninzi lweevalvu zebhola zePVC zilinganiswe ngoxinzelelo oluphezulu lwe-150 PSI (iiponti nge-Inch yesikwere) kwiqondo lobushushu le-73 ° F (23 ° C). Olu kulinganisa luyancipha njengoko ubungakanani bombhobho kunye nokunyuka kobushushu bokusebenza, ngoko hlala ujonga iinkcukacha zomenzi.
Ndikhumbula incoko noBudi, umphathi wokuthenga eIndonesia othenga amawaka eevalvu kuthi. Wandifowunela ngenye imini, ekhathazekile. Omnye wabathengi bakhe, unokontraka, waphelelwa yivalve kufakelo olutsha. Udumo lwakhe lwalusemgceni. Xa siphanda, safumanisa ukuba inkqubo iyasebenza phezulu kancinciubushushukunesiqhelo, okwaneleyo ukuthoba ivalve esebenzayoukukala uxinzelelongezantsi kwento efunwa yinkqubo. Yayiluqwalaselo olulula, kodwa yagxininisa ingongoma ebalulekileyo: inombolo eprintiweyo kwivalve ayilobali lonke. Ukuqonda ubudlelwane phakathi koxinzelelo, ubushushu, kunye nobukhulu kubalulekile kuye nabani na okhangela okanye ofaka ezi zixhobo.
Lungakanani uxinzelelo olunokuphathwa ivelufa yebhola yePVC?
Ubona umgangatho woxinzelelo, kodwa awuqinisekanga ukuba uyasebenza kwimeko yakho ethile. Ukucinga ukuba inani elinye lilingana nabo bonke ubungakanani kunye namaqondo obushushu kunokukhokelela kukusilela okungalindelekanga kunye nokuvuza.
Ivalve yebhola ye-PVC inokusingatha i-150 PSI, kodwa le yi-Cold Working Pressure (CWP). Olona xinzelelo lunokuphatha luhla kakhulu njengoko ubushushu bolwelo bukhuphuka. Ngokomzekelo, kwi-140 ° F (60 ° C), ukulinganiswa koxinzelelo kunokunqunyulwa kwisiqingatha.
Into ephambili ekufuneka siyiqonde apha yile nto siyibiza ngokuba "uxinzelelo de-rating ijika.” Ligama lobugcisa lombono olula: njengoko i-PVC isiya isiba shushu, iya isiba buthathaka ngenxa yoku, kuya kufuneka usebenzise uxinzelelo oluncinci ukuyigcina ikhuselekileIvalve yePVCisebenza ngendlela efanayo. Abavelisi babonelela ngeetshathi ezibonisa ngokuthe ngqo ukuba ivalufa inoxinzelelo olungakanani na kumaqondo obushushu ahlukeneyo. Njengomthetho wesithupha, rhoqo nge-10 ° F ukunyuka ngaphezu kobushushu be-ambient (73 ° F), kufuneka unciphise ubuninzi boxinzelelo oluvumelekileyo malunga ne-10-15%. Kungenxa yoko le nto ukukhangela kumvelisi obonelela ngokucacileyoidatha yobugcisaibaluleke kakhulu kwiingcali ezifana noBudi.
Ukuqonda iTemperature kunye noBukhulu bobudlelwane
| Ubushushu | Umgangatho woxinzelelo oluqhelekileyo (kwivalve eyi-2" | Material State |
|---|---|---|
| 73°F (23°C) | 100% (umz., 150 PSI) | Yomelele kwaye iqinile |
| 100°F (38°C) | 75% (umz., 112 PSI) | Ithambe kancinci |
| 120°F (49°C) | 55% (umz., 82 PSI) | Okuqaphelekayo ngaphantsi kokuqina |
| 140°F (60°C) | 40% (umz., 60 PSI) | Elona qondo lobushushu licetyiswayo; ukuthotywa komgangatho obalulekileyo |
Ngaphaya koko, iivalvu ezinkulu zedayamitha zihlala zineqondo elisezantsi loxinzelelo kunezincinci, nakwiqondo lobushushu elifanayo. Oku kungenxa yefiziksi; indawo enkulu yomphezulu webhola kunye nomzimba wevalvu ithetha ukuba amandla ewonke aqhutywa luxinzelelo mkhulu kakhulu. Ngalo lonke ixesha ujonge ukalisho oluthile lobungakanani obuthile obuthengayo.
Yintoni umda woxinzelelo lwevalve yebhola?
Uyawazi umda woxinzelelo lwePVC, kodwa uthelekisa njani nolunye ukhetho? Ukukhetha izinto ezingafanelekanga kumsebenzi onoxinzelelo oluphezulu kunokuba yindleko, okanye ibe yingozi, impazamo.
Umda woxinzelelo lwevalve yebhola uxhomekeke ngokupheleleyo kwizinto zayo. Iivalvu ze-PVC zezezixokelelwano zoxinzelelo olusezantsi (malunga ne-150 PSI), iivalvu zobhedu zezoxinzelelo oluphakathi (ukuya kuthi ga kwi-600 PSI), kunye neevalvu zensimbi ezingenasici zezezicelo zoxinzelelo oluphezulu, zihlala zigqitha kwi-1000 PSI.
Le yincoko endihlala ndiba nayo nabaphathi bokuthenga abafana noBudi. Ngelixa ishishini lakhe eliphambili likwiPVC, abathengi bakhe ngamanye amaxesha baneprojekthi ezikhethekileyo ezifunaukusebenza okuphezulu. Ukuqonda yonke imarike kumnceda akhonze abathengi bakhe ngcono. Akathengisi nje imveliso; unika isisombululo. Ukuba ikontraka isebenza kumgca wokunkcenkceshela osemgangathweni, i-PVC ilungile,ukhetho olungabizi kakhulu. Kodwa ukuba loo kontraka inye isebenza kwindawo yoxinzelelo oluphezulu lwamanzi okanye inkqubo enamaqondo obushushu aphezulu, uBudi uyazi ukucebisa enye indlela yentsimbi. Olu lwazi lummisela njengengcali kwaye lwakha ukuthembana ixesha elide. Akukho malunga nokuthengisa ivalve ebiza kakhulu, kodwakuneneivalve yomsebenzi.
Ukuthelekisa iMathiriyeli yeValve yeBhola eqhelekileyo
Ukhetho olufanelekileyo luhlala luhla kwiimfuno zesicelo: uxinzelelo, ubushushu, kunye nohlobo lolwelo olulawulwayo.
| Izinto eziphathekayo | Umda woxinzelelo oluqhelekileyo (CWP) | Umlinganiselo wobushushu obuqhelekileyo | Eyona nto ilungileyo / iNcedo engundoqo |
|---|---|---|---|
| I-PVC | 150 PSI | 140°F (60°C) | Amanzi, ukunkcenkceshela, ukumelana nomhlwa, ixabiso eliphantsi. |
| Ubhedu | 600 PSI | 400°F (200°C) | Amanzi okusela, igesi, i-oyile, izinto eziluncedo ngokubanzi. Ukuqina okuhle. |
| Yenziwe ngentsimbi eshayinayo | 1000+ PSI | 450°F (230°C) | Uxinzelelo oluphezulu, iqondo lokushisa eliphezulu, ibakala lokutya, iikhemikhali eziqatha. |
Njengoko ubona, isinyithi esifana nobhedu kunye nentsimbi engenasici zinamandla aphezulu kakhulu kunePVC. La mandla endalo ebavumela ukuba baqulathe uxinzelelo oluphezulu ngaphandle komngcipheko wokugqabhuka. Ngelixa beza kwiindleko eziphezulu, zikhuselekile kwaye ziyimfuneko xa uxinzelelo lwenkqubo ludlula imida yePVC.
Loluphi olona xinzelelo lomoya luphezulu kwiPVC?
Usenokuhendeka ukuba usebenzise iPVC efikelelekayo kumgca womoya oxinanisiweyo. Lo ngumbono oqhelekileyo kodwa oyingozi kakhulu. Ukungaphumeleli apha akuyikuvuza; lugqabhuko-dubulo.
Ungaze usebenzise iivalvu zebhola zePVC okanye imibhobho yomoya ocinezelweyo okanye nayiphi na enye igesi. Uxinzelelo lomoya oluphezulu olucetyiswayo ngu-zero. Irhasi ecinezelekileyo igcina amandla amakhulu, kwaye ukuba i-PVC iyasilela, inokuqhekeka ibe ziiprojekthi ezibukhali neziyingozi.
Esi sesona silumkiso sokhuseleko sibalulekileyo endisinika amaqabane am, kwaye into endiyigxininisayo kwiqela likaBudi kuqeqesho lwalo. Ingozi ayiqondwa kakuhle ngumntu wonke. Isizathu ngumahluko ophambili phakathi kolwelo kunye neegesi. Ulwelo olunjengamanzi alucinezeleki. Ukuba umbhobho wePVC obambe amanzi aqhekeka, uxinzelelo luyehla ngokukhawuleza, kwaye ufumana ukuvuza okulula okanye ukwahlula. Irhasi, nangona kunjalo, icinezeleka kakhulu. Kufana nomthombo ogciniweyo. Ukuba umbhobho wePVC obambe umoya ocinezelweyo uyasilela, onke loo mandla agciniweyo akhululwa kanye, abangele ugqabhuko-dubulo olunobundlobongela. Umbhobho awuqhekeki nje; iyaqhekeka. Ndizibonile iifoto zomonakalo onokuthi ubangele, kwaye yingozi ekungekho mntu unokuze ayithathe.
I-Hydrostatic vs. Ukungaphumeleli koxinzelelo lwe-Pneumatic
Umngcipheko uvela kuhlobo lwamandla agcinwe kwinkqubo.
- Uxinzelelo lweHydrostatic (Amanzi):Amanzi akacinezeli lula. Xa i-container ephethe amanzi ingaphumeleli, uxinzelelo luyancipha ngokukhawuleza. Isiphumo kukuvuza. Amandla achitha ngokukhawuleza kwaye ngokukhuselekileyo.
- Uxinzelelo lwePeneumatic (Umoya/iGesi):I-gas compresses, ukugcina umthamo omkhulu wamandla anokubakho. Xa isikhongozeli sihluleka, la mandla akhululwa ngokuqhushumba. Ukusilela kuyintlekele, hayi ngokuthe ngcembe. Yingakho imibutho efana ne-OSHA (i-Occupational Safety and Health Administration) inemigaqo engqongqo echasene nokusebenzisa i-PVC eqhelekileyo yomoya ocinezelweyo.
Ukusetyenziswa kwe-pneumatic, soloko usebenzisa izinto eziyilwe ngokukodwa kwaye zilinganiselwe kwiigesi ezicinezelekileyo, ezifana nobhedu, intsimbi, okanye iiplastiki ezikhethekileyo ezenzelwe loo njongo. Ungaze usebenzise iPVC yodidi lwemibhobho.
Ithini iqondo loxinzelelo lwevalve yebhola?
Unevalve esandleni sakho, kodwa kufuneka ulazi ireyithingi yayo ngqo. Ukungafundi kakuhle okanye ukungahoywa kokumakisha emzimbeni kunokukhokelela ekusebenziseni ivalve ephantsi kwindlela ebaluleke kakhulu.
Iqondo loxinzelelo lixabiso eligximfizwe ngokuthe ngqo kumzimba wevalve yebhola. Idla ngokubonisa inani elilandelwa yi-“PSI” okanye “PN,” emele olona xinzelelo luphezulu lwe-Cold Working Pressure (CWP) kumaqondo obushushu akwi-ambient, ngokuqhelekileyo yi-73°F (23°C).
Ndihlala ndikhuthaza amaqabane ethu ukuba aqeqeshe indawo yokugcina impahla kunye nabasebenzi bezentengiso ukuba bafunde ezi mpawu ngokuchanekileyo. “Likhadi le-ID” levalvu. Xa iqela likaBudi likhupha iimpahla, banokuqinisekisa ngoko nangoko ukuba bayifumene.imveliso echanekileyo. Xa abathengisi bakhe bethetha nekontraka, banokukhomba ngokwasemzimbeni kwireyithingi ekwivalvu ukuqinisekisa ukuba iyahlangabezana neemfuno zeprojekthi. Eli nyathelo lilula lisusa naluphi na uqikelelo kwaye lithintele iimpazamo phambi kokuba ivalve ide ifike kwindawo yomsebenzi. Iimpawu zisisithembiso esivela kumvelisi malunga nesakhono sokusebenza kwevalvu, kwaye ukuyiqonda kubalulekile ekusebenziseni imveliso ngokukhuselekileyo nangempumelelo. Yinkcukacha encinci eyenza umahluko omkhulu ekuqinisekiseniulawulo lomgangatho kulo lonke ikhonkco lokubonelela.
Ufundwa njani amanqaku
Iivalvu zisebenzisa iikhowudi ezisemgangathweni ukunxibelelana nemida yazo. Nazi ezona zixhaphakileyo oza kuzifumana kwivalve yebhola yePVC:
| Ukumakisha | Intsingiselo | Ummandla oqhelekileyo/uMgangatho |
|---|---|---|
| PSI | Iiponti nge-intshi yesikwere | EUnited States (umgangatho weASTM) |
| PN | Uxinzelelo lwegama (kwiBar) | IYurophu kunye neminye imimandla (umgangatho we-ISO) |
| CWP | Uxinzelelo Lokusebenza Olubandayo | Igama eliqhelekileyo elibonisa uxinzelelo kumaqondo obushushu akhoyo. |
Umzekelo, unokubona“150 PSI @ 73°F”. Oku kucace kakhulu: I-150 PSI lolona xinzelelo luphezulu, kodwa kuphela okanye ngaphantsi kwe-73 ° F. Ungabona kwakhona"PN10". Oku kuthetha ukuba ivalve inikwe umlinganiselo woxinzelelo lwegama le-10 Bar. Ekubeni i-1 Bar imalunga ne-14.5 PSI, i-valve ye-PN10 iphantse ilingane ne-valve ye-PSI ye-145. Soloko ujonge inani loxinzelelo kunye naluphi na umlinganiselo wobushushu ohambelanayo ukuze ufumane umfanekiso opheleleyo.
Ukuqukumbela
Umda woxinzelelo lwevalve yebhola ye-PVC uqhelekile ukuba li-150 PSI yamanzi, kodwa olu xabiso lwehla ngobushushu. Okona kubaluleke kakhulu, ungaze usebenzise iPVC kwiinkqubo zomoya ezicinezelekileyo.
Ixesha lokuposa: Jul-02-2025
