Ithangi Lokunweba Le-HVAC Yesikhungo Sedatha: Imikhumbi Yokucindezela Ye-ASME Yezinhlelo Ezivaliwe
Kwadalwa ngo Ngokwamukisa
Ithangi Lokunweba Le-HVAC Yesikhungo Sedatha: Izitsha Zengcindezi ze-ASME Zezinhlelo Ezivaliwe
Ithangi lokunweba (expansion tank) le-HVAC yesikhungo sedatha iyisitsha sokucindezela esimunca ukwanda kokushisa kwezinhlelo ezivaliwe zamanzi abandayo kanye nezokushisa futhi sigcine ingcindezi yesethenjwa yomjikelezo, sivimba izehlakalo zokukhululwa kwengcindezi kanye ne-cavitation yengcindezi ephansi. Liwuhlobo lomkhiqizo oluhlukile kuthangi lesikhashana (buffer tank): lapho i-buffer yengeza khona i-inertia yokushisa/yoketshezi, isitsha sokunweba silawula ushintsho lwevolumu nengcindezi. Lapho isitsha sidlula umkhawulo wemishini yengcindezi, ukwakhiwa kubhekiselwa ku-ASME Boiler and Pressure Vessel Code (Isigaba VIII); amayunithi amancane angase angabi ngaphansi kwekhodi lapho imithetho yendawo ivuma khona. Isitsha ngokuvamile siwuhlobo lwe-diaphragm noma lwe-bladder esigobeni sensimbi engagqwali noma esigobeni esine-epoxy, esikalwa ngokususelwa kuvolumu yamanzi ohlelo, ububanzi bokushisa kanye nebhendi yengcindezi evunyelwe.
I-loop ye-HVAC evaliwe — amanzi apholile noma okushisa — ayikwazi nje ukumunca ushintsho lwevolumu njengoba amanzi ayo eshisa futhi ephola; lokho kwanda kufanele kuhambe ndawana thize, futhi ingcindezi ye-loop kufanele igcinwe endaweni ephephile. Ithangi lokwanda iyithuluzi elenza kokubili. Ukulidida nethangi le-buffer kuyiphutha elivamile lokucacisa: i-buffer ibushelela ukugeleza nokushintshashintsha kwezinga lokushisa, kanti isitsha sokwanda samukela ushintsho lwevolumu futhi sibeka idatha yengcindezi. Uma ulinganisa noma uhlukanisa ngokungalungile, i-loop ingase ikhiphe uketshezi iye emseleni noma iwe phansi ibe yi-cavitation lapho iphola. Isiyalo siwukuthi isitsha sokwanda sithathwe njengesitsha sengcindezi esilinganiswe ngobuningi bamanzi esimisweni kanye nokushintshashintsha kwezinga lokushisa, futhi sakhiwe ngokwe-ASME Section VIII lapho isimo sengcindezi sidinga khona.
Lo mhlahlandlela usebenza ngethangi lokunweba le-HVAC yesikhungo sedatha kusukela ekuphathweni kwengcindezi kuya ekuhlukanisweni kwekhodi kuya ekulinganiseni nasekukhethweni.
Ukuphathwa Kwengcindezi Emijikelezweni Evaliwe
Umjikelezo we-HVAC ovaliwe kufanele ugcine ingcindezi eyireferensi ehlala ngaphezu kobuncane be-static kanye ne-vapour-pressure kodwa ngaphansi kwesethi yokukhulula, futhi ithangi lokunweba yilona elilungisa leyo datum. Njengoba amanzi eshisa ayakhula; njengoba ephola ayancipha.
1. Ingcindezi eyireferensi. Ukushajwa kusengaphambili kwethangi kubeka ingcindezi ephakathi nendawo yomjikelezo, kugcina wonke amaphuzu ngaphezu komkhawulo we-cavitation noma wokungena komoya.
2. Ukwamukelwa kokwanda. Ithangi lamukela umthamo amanzi awutholayo njengoba efudumala, ngakho ingcindezi yomjikelezo inyuka kuphela ngaphakathi kwebhendi eliklanyelwe kunokuba icindezele ukukhululeka.
3. Ukumboza kokuncipha. Njengoba umjikelezo uphola futhi uncipha, ithangi libuyisela umthamo ukuze ingcindezi ingehli ngaphansi kobuncane futhi ingadonsi umoya noma umhwamuko.
Ngaphandle kwesitsha sokwanda esilinganiselwe kahle, wonke umjikelezo wokushisa nokupholisa ulwa nokushintsha komthamo wawo umjikelezo.
Izinhlobo Zemikhumbi Yediyaframu Nezesinye
Ama-expansion vessel e-HVAC yedatha-center ngokuvamile ayizinhlobo ze-diaphragm noma ze-bladder, ahlukanisa amanzi ohlelo kusuka ku-gas cushion ukuze impendulo yengcindezi ibe nokulindeleka. Uhlobo lulandela ukuhlanzeka kweluphu kanye nezidingo zesevisi, kanti i-diaphragm noma i-bladder ikalwe ngokwamanzi kanye nezinga lokushisa.
· I-diaphragm vessel. I-membrane engashintshi ihlukanisa amanzi kusuka ku-gas; uhlangothi lwamanzi luwuhlelo, uhlangothi lwe-gas lune-pre-charge. Ilula, ayidingi ukunakekelwa okuningi, ifanele amaluphu amaningi avaliwe.
· I-bladder vessel. I-bladder eshintshwayo iqukethe i-gas; amanzi ahlala ngaphandle kwayo, okwenza kube lula ukunakekelwa kohlangothi lwe-gas.
· Ukufanisa i-pre-charge. I-pre-charge ye-gas isethwa engcindezini yokugcwalisa ebandayo yeluphu ukuze i-vessel iqale ukwamukela ukwanda ngesikhathi esifanele.
I-HVAC yesikhungo sedatha yesimanjemanje isebenzisa izitsha ezivaliwe, ezishajwe kusengaphambili; amathangi okunweba avulekile awasasetshenziswa lapha ngoba avumela umoya futhi alahlekelwe ukulawulwa kwengcindezi. Uhlobo lwesitsha lukhethwa ukuze kusebenziseke kalula nokuhlanzeka komjikelezo.
Uhlobo lwesitsha | Ukuhlukaniswa kwegesi/amanzi | Inothi lokusebenza |
I-diaphragm | I-membrane engashintshi | Ukunakekela okulula, okuvamile |
I-bladder | I-bladder eshintshekayo | Isevisi yohlangothi lwegesi elula |
Vuliwe (okwakudala) | Lutho | Akusasebenzi ku-DC HVAC evaliwe |
Ikhodi ye-ASME Uma Kuqhathaniswa Nokwakhiwa Okungeyona Ikhodi
Ukuthi umkhumbi wokwandisa kufanele wakhiwe ngokwe-ASME Section VIII kuncike engcindezini yawo yokusebenza kanye nevolumu uma kuqhathaniswa nomkhawulo wezinto zengcindezi ofanele, futhi lokhu kuhlukaniswa kunqunywa kusenesikhathi. Umkhumbi wengcindezi kanye nethangi elingenayo ikhodi kuyimikhiqizo ehlukene.
· I-ASME BPVC Isigaba VIII. Kubhekiselwa lapho umgqomo usebenza ngaphezu komkhawulo wendawo okuletha ngaphansi kokulawulwa kwemishini yengcindezi; igobolondo, umlomo wokuphuma, ukukhululeka kanye nemibhalo kulandela ikhodi, kanye nepuleti legama kanye nesitembu lapho kudingeka.
· Idizayini engeyona yekhodi. Ivunyelwe lapho ingcindezi yomjikelezo kanye nomthamo kungaphansi kwesikhuthazi sokulawula; umgqomo usakhelwe umsebenzi kodwa awunasisitembu sekhodi.
· Kungani kubalulekile. Umkhumbi wekhodi uphethe idizayini ebhaliwe, ukuhlolwa kanye nesitembu esenelisa isiphathimandla esinegunya kanye nokuhlolwa kwemboni; ukucacisa umkhumbi ongeyona ikhodi lapho ikhodi idingeka khona kudala igebe lokuhambisana.
Ukuhlukaniswa kuqinisekiswa ngokumelene nomthetho wendawo kanye nomfutho ophezulu womjikelezo ngaphambi kokuba umkhumbi u-odwe.
Impahla Nokufakwa Kwangaphakathi
Umkhumbi wokunweba ngokuvamile uyinsimbi engagqwali noma igobolondo eline-epoxy, kanti izinto zohlangothi lwegesi kanye nohlangothi lwamanzi zikhethwa ngokulingana noketshezi kanye nezinga lokushisa. Njengengxenye yomfutho, ubuqotho bempahla bubaluleke kakhulu.
· I-Stainless (304/316). Ivamile emikhunjini yengcindezi eyakhiwe efektri; i-stainless epassivated imelana noketshezi lwe-HVAC ngaphandle kwe-lining ehlukile futhi ifanele kokubili amanzi abandayo kanye nemijikelezo yokushisa.
· Insimbi ene-epoxy-lined. Isetshenziswa lapho kuthandwa khona igobolondo eline-lining futhi i-epoxy iqinisekisiwe uketshezi kanye nebhendi lokushisa; kubhekiselwa esimisweni sokumboza esifana ne-AWWA C550 lapho kusebenza khona.
· Ukuhambisana kwe-diaphragm/bladder. I-elastomer ilinganiselwe uketshezi lwe-HVAC (ngokuvamile amanzi avinjelwe noma i-glycol) kanye nebanga lokushisa ukuze ingonakali emsebenzini.
Ukubhala phansi into yokwakha nanoma yisiphi isigxivizo sekhodi kuvimbela umkhumbi ongakwazi ukuhlukaniswa noma ukulungiswa.
Ukulinganisa Isitsha Sokwanda
Isitsha sokwanda silinganiswa ngokusuka kumthamo wamanzi wesistimu, ububanzi bokushisa kanye nebhendi yokucindezela evunyelwe — hhayi ngomthetho ojwayelekile. Okokufaka okuthathu kusetha umthamo.
4. Umthamo wamanzi wesistimu. Inani eliphelele leluphu elivaliwe (amapayipi, amakhoyili, amayunithi) elikhula futhi lincipha ngokushisa.
5. Ibanga lokushisa. Ukusuka ekugcwaliseni ngokubanda kuya ekushiseni okuphezulu kokusebenza, okubeka ushintsho lwevolumu yamanzi okufanele kwamukelwe.
6. Ibhendi yengcindezi. Umehluko phakathi kwengcindezi yokugcwalisa kuqala (eyomile) nengcindezi ephezulu evunyelwe, okubeka ukuthi umkhumbi ungamunca kangakanani ukwanda kwesilinganiso esithile.
Umthamo wokwanda owamukelwayo ubalwa kusukela kusilinganiso sokwanda kokushisa kwamanzi phakathi kobubanzi, bese ufaniswa nosayizi womkhumbi ongena ngaphakathi kwebhendi yengcindezi.
Uhlukile Kumsebenzi Wokubhafa
Ithangi lokwanda akulona ithangi lokubhafa, futhi womabili acaciswa ngokwehlukana ngisho noma ehlezi kumjikelezo ofanayo. Ukuwahlanganisa kukhiqiza umjikelezo ongacindezeli noma ongazinzi kahle.
Umsebenzi | Umkhumbi wokwanda | Ithangi lokubhafa |
Indima eyinhloko | Yamukela ushintsho lwevolumu, setha ingcindezi eyisithenjwa | Engeza i-inertia yokushisa/yamandla oketshezi |
Usayizi ohlobene | Okuncane vs umthamo weluphu | Okukhulu, ngokuvamile i-atmospheric |
Ukuhlukaniswa | Ikilaswa ngengcindezi | Ngokuvamile ingcindezi ephansi |
Ubudlelwano | Kuyahambisana, akukho ukushintshana | Kuyahambisana, akukho ukushintshana |
Ukusho imisebenzi yomibili ngokucacile esicacisweni kuvimbela iphutha elivamile lokucacisa eyodwa lapho zombili zidingeka.
Icala Lomsebenzi
Ireferensi yedatha yesikhungo sedatha ye-HVAC yokunwetshwa kwemikhumbi ayikakabi yingxenye yephothifoliyo elethiwe, ngakho le ndatshana ibhalwe njengomhlahlandlela wobunjiniyela hhayi njengesicaphuno sephrojekthi. Ikhono lenkampani lokuhlinzeka ngemikhumbi enengcindezi eklanyelwe kanye nemikhumbi eneliningi liboniswa emikhakheni eseduze: izinhlelo zokuvikela umlilo zaphesheya ziye zathumela amathangi e-GFS afinyelela ku-12,261 m³ (India, amathangi ama-3, 2024-06) kanye no-1,666 m³ (Singapore, amathangi ama-2, 2026-01), akhiwe ngamazinga afanayo amathangi aboshiwe. Lezo zinkomba zifakazela ukuhlinzekwa kwamakhumbi anevolumu enkulu kanye ne-QA; zingamaphrojekthi okuvikela umlilo, hhayi ukufakwa kwamakhumbi okunwetshwa kwe-HVAC yesikhungo sedatha, futhi zicashunwa lapha kuphela njengomongo wekhono.
Amandla Obunjiniyela be-Center Enamel
UCenter Enamel (Shijiazhuang Zhengzhong Technology Co., Ltd) isungule futhi yakha amathangi okugcina ancikisiwe kusukela ngo-2008. Njengomkhiqizi wokuqala wamathangi ensimbi ehlanganiswe nengilazi (GFS) eChina, inkampani inamalungelo obunikazi acishe abe ngu-200 ahlobene ne-enamel, ikhiqiza cishe amapuleti ensimbi ehlanganiswe nengilazi angu-300,000 ngonyaka, isiqedile imisebenzi efakiwe engaphezu kuka-30,000 futhi ihlinzeka ngamathangi ayo emazweni angaphezu kwe-100. Isizinda esisha sokukhiqiza esingama-150,000 m² sengezwe ukuze kunyuswe umthamo wokukhiqiza, futhi amathangi angawodwa ahlinzekwa afinyelela ku-60,000 m³. Ukukhiqiza kusebenza ngaphansi kwe-ISO 9001 ne-ISO 45001, ngesitifiketi somkhiqizo esihlanganisa i-NSF/ANSI 61, i-WRAS, i-FDA, i-LFGB, i-CE (EN 1090), i-ISO 28765, i-FM, i-BSCI ne-EUROCODE, futhi ukuklama kubhekiselwa ku-ASME, ISO 28765, AWWA D103-09 ne-AWWA C550 lapho ukusetshenziswa kudinga khona.
Ngomsebenzi we-HVAC wokwandisa i-vessel, inkampani ihlinzeka ngemikhumbi yengcindezi engenasici kanye ne-epoxy-lined enokuhlukaniswa kwe-diaphragm noma i-bladder, ukushaja kwangaphambili okuhambisana ne-loop, kanye nokwakhiwa kwe-ASME Section VIII lapho isimo sengcindezi sidinga khona, kanye nemibhalo yezinto zokwakha kanye nekhodi ukuze ibuyekezwe.
Imibuzo Evame Ukubuzwa
Umbuzo 1: Ingabe ithangi lokwandisa liyafana nethangi le-buffer?
Impendulo 1: Cha. Umkhumbi wokwandisa ulawula ukushintsha kwevolumu yokushisa kanye nengcindezi yesethenjwa ye-loop; ithangi le-buffer lengeza i-inertia yokushisa/ye-hydraulic. I-loop ingase idinge kokubili, okucaciswe ngokwehlukana.
Umbuzo 2: Umgqomo kufanele ube ne-ASME-code nini?
Impendulo 2: Lapho ingcindezi yokusebenza kanye nomthamo wayo kudlula umkhawulo wendawo wemishini yengcindezi; ukuhlukaniswa kuqinisekiswa ngokumelene nomthetho osebenzayo kanye nengcindezi ephezulu yomjikelezo ngaphambi koku-oda.
Umbuzo 3: Uyini umehluko phakathi kwemigqomo ye-diaphragm kanye ne-bladder?
Impendulo 3: Umgqomo we-diaphragm unolwelwesi olungaguquki oluhlukanisa amanzi kanye negesi; umgqomo we-bladder une-bladder eshintshwayo equkethe igesi. Kokubili kulungisa ingcindezi yomjikelezo; izinhlobo ze-bladder zenza kube lula ukusevisa ohlangothini lwegesi.
Umbuzo 4: Umkhumbi wokunweba uningwa kanjani?
Impendulo 4: Kusukela kumthamo wamanzi wesistimu, ububanzi bokusuka ekugcwaliseni okubandayo kuya ekushiseni okuphezulu (ukwanda kokushisa kwamanzi), kanye nebhendi yomfutho evunyelwe phakathi kokushaja kwangaphambili kanye nomfutho ophezulu.
Umbuzo 5: Iyiphi impahla esetshenziswayo?
A5: Ngokuvamile i-stainless (304/316) yemikhumbi yengcindezi yasefektri, noma insimbi ene-epoxy-lined lapho kuthandwa khona igobolondo eline-lining; i-elastomer ye-diaphragm/bladder ilinganiselwe uketshezi kanye nezinga lokushisa.
Q6: Kungani i-pre-charge ibalulekile?
A6: Ukushajwa kwangaphambili kwegesi kusethelwe ekucindezelweni kokugcwalisa okubandayo kweluphu ukuze isitsha siqale ukwamukela ukwanda ngesikhathi esifanele futhi sigcine iluphu ingaphezu kwezinga eliphansi le-cavitation/ukungena komoya.
Q7: Ingabe isitsha sidinga ukuxhumanisa kokukhululeka?
A7: Yebo. Ukuvikelwa kokucindezela ngokweqile kweluphu kucaciswa kanye nesitsha sokwanda ukuze ukwanda kuhlale ngaphakathi kwebhendi yokucindezela ephephile kungakhathaliseki isimo sekhodi.
Ithangi lokunweba le-HVAC yesikhungo sedatha iyisitsha esihlukaniswe ngengcindezi esimunca ukunweba kokushisa futhi sigcine ingcindezi eyisisekelo yomjikelezo ovaliwe — umkhiqizo ohlukile kuthangi lebhafa. Qinisekisa ukuhlukaniswa kwe-ASME Section VIII ngokumelene nengcindezi nomthamo womjikelezo, khetha isitsha se-diaphragm noma se-bladder ngensimbi engashayi lutha noma ene-epoxy-lined enokugcwaliswa kwangaphambili okuhambisana nokugcwaliswa okubandayo, futhi kulinganise ngokomthamo wamanzi wesistimu, ububanzi bokushisa kanye nebhendi yengcindezi. Kucacisiwe ngaleyo ndlela, isitsha sokunweba sigcina umjikelezo we-HVAC uphephile kuyo yonke imijikelezo.
Khuluma Nonjiniyela
Ukuze sithole ithangi lokunweba le-HVAC yesikhungo sedatha, sithumelele umthamo wamanzi wesistimu evaliwe, amazinga okushisa okugcwalisa ngokubanda kanye nokushisa okuphezulu kokusebenza, ibhendi yengcindezi yeluphu kanye nephoyinti lokukhulula, kanye noketshezi (amanzi noma i-glycol). Sizobuyisela usayizi nohlobo lwomkhumbi wokunweba (i-diaphragm noma i-bladder), incazelo ye-stainless noma i-epoxy-lined ene-pre-charge, isinqumo sokuhlukaniswa kwe-ASME Section VIII, kanye nemibhalo yezinto zokwakha nekhodi ukuze ibuyekezwe.
WhatsApp