Uphuhliso loshishino lwangoku lubeke iimfuno ezongezelelekileyo kubume bokulinga, uphando kunye nemveliso. Indlela ephambili yokufezekisa le mfuneko kukusebenzisa ngokubanzi izihluzi zomoya kwiinkqubo zokucoca umoya. Phakathi kwazo, izihlungi ze-HEPA kunye ne-ULPA zilukhuselo lokugqibela lwamasuntswana othuli angena kwigumbi elicocekileyo. Ukusebenza kwayo kuhambelana ngokuthe ngqo kwinqanaba legumbi elicocekileyo, elichaphazela inkqubo kunye nomgangatho wemveliso. Ke ngoko, kunentsingiselo ukwenza uphando lovavanyo kwisihluzi. Ukusebenza kokuxhathisa kunye nokusebenza kokucoca kwezihluzo ezimbini zithelekiswe kwizantya zomoya ezahlukeneyo ngokulinganisa ukusebenza kakuhle kwesihluzo sefayibha yeglasi kunye ne-PTFE yokucoca i-0.3 μm, 0.5 μm, 1.0 μm amasuntswana e-PAO. Iziphumo zibonisa ukuba isantya somoya yeyona nto ibaluleke kakhulu echaphazela ukusebenza kakuhle kohluzo lwe-HEPA. Ukuphakama kwesantya somoya, kokukhona kusezantsi ukusebenza kakuhle kokucoca, kunye nesiphumo sibonakala ngakumbi kwizihluzi ze-PTFE.
Amagama angundoqo:Isihluzi somoya se-HEPA;Ukusebenza kokuchasa; ukusebenza kohluzo; iphepha lokucoca i-PTFE; iphepha lokucoca iglasi; isihluzo sefayibha yeglasi.
Inombolo ye-CLC: X964 Ikhowudi yesazisi yoxwebhu: A
Ngophuhliso oluqhubekayo lwesayensi kunye nethekhinoloji, ukuveliswa kunye nokuphuculwa kweemveliso zanamhlanje ziye zafuna ngakumbi ukucoceka komoya wangaphakathi. Ngokukodwa, i-microelectronics, unyango, ikhemikhali, ibhayoloji, ukulungiswa kokutya kunye namanye amashishini afuna i-miniaturization. Ukuchaneka, ukucoceka okuphezulu, umgangatho ophezulu kunye nokuthembeka okuphezulu kokusingqongileyo kwangaphakathi, okubeka iimfuno eziphezulu kunye eziphezulu ekusebenzeni kwe-HEPA yokucoca umoya, ngoko ke indlela yokwenza isihluzo se-HEPA ukuhlangabezana nemfuno yabathengi ibe yimfuno engxamisekileyo yabavelisi. Enye yeengxaki ezisonjululwe [1-2]. Kuyaziwa ukuba ukusebenza kokumelana kunye nokusebenza kakuhle kokucoca zizalathisi ezibini ezibalulekileyo zokuvavanya isihluzi. Eli phepha lizama ukuhlalutya ukusebenza kokucoca kunye nokusebenza kokuchasana kwe-HEPA yokucoca umoya wezinto ezahlukeneyo zokucoca ngovavanyo [3], kunye nezakhiwo ezahlukeneyo zezinto ezifanayo zokucoca. Ukusebenza kokucoca kunye neempawu zokuchasana zesihluzi zibonelela ngesiseko sethiyori kumenzi wokucoca.
1 Uhlalutyo lwendlela yokuvavanya
Zininzi iindlela zokubona izihluzi zomoya ze-HEPA, kwaye amazwe ahlukeneyo anemigangatho eyahlukeneyo. Kwi-1956, iKomishoni yoMkhosi yase-US yavelisa i-USMIL-STD282, umgangatho wokuvavanya umoya we-HEPA, kunye nendlela ye-DOP yokuvavanya ukusebenza kakuhle. Ngo-1965, umgangatho waseBritani we-BS3928 wasekwa, kwaye indlela yomlilo yesodium yokufumanisa ukusebenza kakuhle yasetyenziswa. Kwi-1973, i-European Ventilation Association yaphuhlisa umgangatho we-Eurovent 4/4, owalandela indlela yokukhangela i-sodium flame. Kamva, i-American Society for Environmental Testing and Filter Efficiency Science yaqulunqa uluhlu lwemigangatho efanayo yeendlela zokuvavanya ezicetyiswayo, zonke zisebenzisa indlela yokubala i-DOP caliper. Ngo-1999, iYurophu yaseka umgangatho we-BSEN1822, osebenzisa ubungakanani besuntswana obungafihliyo (MPPS) ukubona ukusebenza kakuhle kokucoca [4]. Umgangatho wokufumanisa waseTshayina wamkela indlela yomlilo yesodium. Inkqubo yokukhangela ukusebenza kwesihluzo somoya we-HEPA esetyenziswa kolu vavanyo iphuhliswe ngokusekelwe kumgangatho we-US 52.2. Indlela yokufumanisa isebenzisa indlela yokubala i-caliper, kwaye i-aerosol isebenzisa iinqununu ze-PAO.
1. 1 isixhobo esiphambili
Olu lingelo lusebenzisa izixhobo zokubala zamasuntswana ezibini, ezilula, ezilungeleyo, ezikhawulezayo kwaye ezinengqondo xa kuthelekiswa nezinye izixhobo zovavanyo loxinaniso lwamasuntswana [5]. Ezi zibonelelo zingasentla zekhawuntara yesuntswana iyenza ithathe indawo yezinye iindlela kwaye ibe yeyona ndlela yokuvavanya yoxinzelelo lwamasuntswana. Bangakwazi ukubala zombini inani lamasuntswana kunye nokusabalalisa ubungakanani bamasuntswana (oko kukuthi, ukubala ukubala), eyona sixhobo esingundoqo solu vavanyo. Isantya sokuhamba kwesampulu yi-28.6 LPM, kunye nepompo yayo ye-carbonless vacuum ineempawu zengxolo ephantsi kunye nokusebenza okuzinzile. Ukuba ukhetho lufakiwe, ubushushu kunye nokufuma kunye nesantya somoya sinokulinganiswa kwaye isihluzo sinokuvavanywa.
Inkqubo yokufumanisa isebenzisa i-aerosols isebenzisa i-PAO particles njengothuli oluza kuhluzwa. Sisebenzisa i-aerosol generators (izizukulwana ze-Aerosol) zemodeli ye-TDA-5B eveliswa e-United States. Uluhlu lwenzeka ngu-500 - 65000 cfm (1 cfm = 28.6 LPM), kwaye ugxininiso ngu-100 μg / L, 6500 cfm; 10 μg / L, 65000 cfm.
1. 2 igumbi elicocekileyo
Ukuze kuphuculwe ukuchaneka kovavanyo, ilebhu yenqanaba le-10,000 yenzelwe kwaye yahonjiswa ngokwe-US Federal Standard 209C. Umgangatho wokugcoba usetyenziswa, obonakaliswe ngeenzuzo ze-terrazzo, ukuxhatshazwa kokugqoka, ukutywinwa kakuhle, ukuguquguquka kunye nokwakhiwa okunzima. Izinto eziphathekayo ziyi-epoxy lacquer kwaye udonga lwenziwe ngegumbi elicocekileyo elidibeneyo. Igumbi lixhotyiswe nge-220v, i-2 × 40w yokucoca izibane ezi-6 kwaye ihlelwe ngokweemfuno zokukhanyisa kunye nezixhobo zentsimi. Igumbi elicocekileyo lineendawo ezi-4 eziphezulu zomoya kunye ne-4 air return ports. Igumbi leshawari yomoya lenzelwe ulawulo olulodwa oluqhelekileyo. Ixesha leshawa yomoya yi-0-100s, kwaye isantya somoya sayo nayiphi na i-nozzle yomthamo womoya olungelelaniswayo ojikelezayo mkhulu okanye ulingana ne-20ms. Ngenxa yokuba indawo yegumbi elicocekileyo i-<50m2 kwaye abasebenzi
1. 3 iisampulu zovavanyo
Imifuziselo yesihluzo sefayibha yeglasi zezi: 610 (L) × 610 (H) × 150 (W) mm, uhlobo lwe-baffle, 75 imibimbi, ubukhulu 610 (L) × 610 (H) × 90 (W) Mm, kunye ne-200 pleats, PTFE ubungakanani bokucoca 480 × 8 mm (H) (H) 480 × 8 mm (H) uhlobo baffle, kunye 100 imibimbi.
2 Imigaqo esisiseko
Umgaqo osisiseko webhentshi yokuvavanya kukuba i-fan ivuthelwa emoyeni. Ekubeni i-HEPA/UEPA ikwaxhotyiswe nge-HEPA yokucoca umoya, kunokuqwalaselwa ukuba umoya ube ngumoya ococekileyo ngaphambi kokufikelela kwi-HEPA/UEPA evavanyiweyo. Isixhobo sikhupha amasuntswana e-PAO kumbhobho ukwenza ugxininiso olunqwenelekayo lwerhasi equlathe uthuli kwaye sisebenzisa isibali sesuntswana lelaser ukumisela ukuxinana kwamasuntswana. I-gas equkethe uthuli emva koko ihamba nge-HEPA / UEPA evavanyiweyo, kwaye i-particle concentration ye-particle emoyeni ehluzwe yi-HEPA / UEPA iphinda ilinganiswe ngokusebenzisa i-laser particle counter, kunye noxinzelelo lothuli lomoya ngaphambi nangemva kokuba isihluzo sifaniswa, ngaloo ndlela simisela i-HEPA / UEPA. Ukusebenza kwesihluzi. Ngaphezu koko, imingxunya yesampulu icwangciswe ngokulandelelanayo phambi nasemva kwesihluzo, kwaye ukuxhathisa kwesantya somoya ngasinye kuvavanywa ngokusebenzisa igeyiji yokuthambeka yoxinzelelo oluncinci apha.
3 uthelekiso lokumelana nesihluzi
Uphawu lokumelana ne-HEPA yenye yeempawu ezibalulekileyo ze-HEPA. Ngaphantsi kwesiseko sokuhlangabezana nokusebenza kakuhle kwemfuno yabantu, iimpawu zokuchasana zihambelana neendleko zokusetyenziswa, ukuchasana kuncinci, ukusetyenziswa kwamandla kuncinci, kwaye iindleko zigcinwa. Ngoko ke, ukusebenza kokuchasana kwesihluzi kuye kwaba yinkxalabo. Esinye sezibonakaliso ezibalulekileyo.
Ngokwedatha yovavanyo lovavanyo, unxulumano phakathi komndilili wesantya somoya kwizihluzi ezibini ezahlukeneyo zesakhiwo sefayibha yeglasi kunye nesihluzo se-PTFE kunye nomahluko woxinzelelo lokucoca ufunyenwe.Ubudlelwane buboniswe kuMfanekiso 2:
Inokubonwa kwidatha yovavanyo ukuba njengoko isantya somoya sinyuka, ukuxhathisa kwesihluzo kunyuka ngokulandelelana ukusuka ezantsi ukuya phezulu, kwaye imigca emibini ethe tye yezihluzo ezimbini zefiber yeglasi ihambelana kakhulu. Kulula ukubona ukuba xa isantya somoya sokuhluza siyi-1 m/s, ukuxhathisa kwesihluzo sefayibha yeglasi malunga nokuphinda-phindwe kane kwe-PTFE.
Ukwazi indawo yesihluzi, ubudlelwane phakathi kwesantya sobuso kunye nomahluko woxinzelelo lokucoca unokufumaneka:
Inokubonwa kwidatha yovavanyo ukuba njengoko isantya somoya sinyuka, ukuxhathisa kwesihluzo kunyuka ngokulandelelana ukusuka ezantsi ukuya phezulu, kwaye imigca emibini ethe tye yezihluzo ezimbini zefiber yeglasi ihambelana kakhulu. Kulula ukubona ukuba xa isantya somoya sokuhluza siyi-1 m/s, uxhathiso lwesihluzo sefayibha yeglasi malunga nokuphinda-phindwe kane kwe-PTFE yokucoca.
Ukwazi indawo yesihluzi, ubudlelwane phakathi kwesantya sobuso kunye nomahluko woxinzelelo lokucoca unokufumaneka:
Ngenxa yomahluko phakathi kwesantya somphezulu weentlobo ezimbini zezihluzi kunye noxinzelelo loxinzelelo lohlulo umahluko wamaphepha amabini okucoca, ukuxhathisa kwesihluzo kunye nokucaciswa kwe-610 × 610 × 90mm kwisantya somphezulu ofanayo kuphezulu kune-610 × . Ukumelana ne-610 x 150mm yokucoca.
Nangona kunjalo, kucacile ukuba kwisantya esifanayo somphezulu, ukuchasana kwefiber yeglasi yokucoca kuphezulu kunokumelana ne-PTFE. Ibonisa ukuba i-PTFE ingaphezulu kwi-glass fiber filter ngokwemigaqo yokusebenza yokumelana. Ukuze uqonde ngakumbi iimpawu zesihluzo sefayibha yeglasi kunye nokumelana ne-PTFE, imifuniselo eyongezelelweyo yenziwa. Funda ngokuthe ngqo ukuxhathisa kwamaphepha amabini okucoca njengoko isantya somoya sitshintsha, iziphumo zovavanyo ziboniswe ngezantsi:
Oku kuqinisekisa ngakumbi isiphelo sangaphambili sokuba ukuxhathisa kwephepha lokucoca i-glass fiber kuphezulu kunolo lwe-PTFE phantsi kwesantya somoya esifanayo [6].
4 uthelekiso lokucoca ulwelo
Ngokweemeko zovavanyo, ukusebenza kakuhle kokucoca kwesihluzo samasuntswana anobungakanani besuntswana le-0.3 μm, 0.5 μm, kunye ne-1.0 μm kwizantya zomoya ezahlukeneyo kunokulinganiswa, kwaye itshathi elandelayo ifunyenwe:
Ngokucacileyo, ukusebenza kakuhle kokucoca kwezihluzi zeglasi ezimbini ze-1.0 μm zamasuntswana kwizantya zomoya ezahlukeneyo yi-100%, kunye nokusebenza kakuhle kokucoca kwe-0.3 μm kunye ne-0.5 μm yamasuntswana kuncipha ngokunyuka kwesantya somoya. Ingabonwa ukuba ukusebenza kakuhle kokucoca isihlunu kwiinqununu ezinkulu kuphezulu kuneencinci ezincinci, kunye nokusebenza kokucoca kwe-610 × 610 × 150 mm yokucoca iphezulu kwi-filter ye-specification 610 × 610 × 90 mm.
Ukusebenzisa indlela enye, igrafu ebonisa unxulumano phakathi kobuchule bokucoca kwe-480×480×70 mm PTFE yokucoca njengomsebenzi wesantya somoya ifunyenwe:
Ukuthelekisa i-Fig. 5 kunye ne-Fig. 6, i-filtration effect ye-0.3 μm, i-0.5 μm i-glass particle filter ingcono, ngakumbi kwi-0.3 μm isiphumo sokungafani kothuli. Umphumo wokuhluza amaqhekeza amathathu kwi-1 μm yayiyi-100%.
Ukuze uthelekise ngakumbi ukusebenza kokucoca kwefiber yeglasi kunye nezinto zokucoca i-PTFE, iimvavanyo zentsebenzo yesihluzi zenziwa ngokuthe ngqo kumaphepha amabini okucoca, kwaye itshathi elandelayo yafunyanwa:
Itshathi engentla ifunyenwe ngokulinganisa isiphumo sokuhluza kwe-PTFE kunye nephepha leglasi lokucoca ifayibha kumasuntswana angama-0.3 μm kwizantya zomoya ezahlukeneyo [7-8]. Kucacile ukuba ukusebenza kakuhle kokucoca kwephepha le-PTFE lokucoca lisezantsi kunelo leglasi yephepha lokucoca ifayibha.
Ukuqwalasela iimpawu zokuxhathisa kunye neempawu zokuhluza izinto zokucoca, kulula ukubona ukuba izinto zokucoca i-PTFE zifaneleke ngakumbi ukwenza izihluzo ezirhabaxa okanye eziphantsi kwe-HEPA, kunye ne-glass fiber filter material ifaneleke ngakumbi ukwenza i-HEPA okanye i-ultra-HEPA filters.
5 Isiphelo
Ithemba lezicelo zokucoca ezahlukeneyo zijongiwe ngokuthelekisa iipropati zokumelana kunye neempawu zokuhluza izihluzo ze-PTFE ezinezihluzo zeglasi zefiber. Kuvavanyo sinokufikelela kwisigqibo sokuba isantya somoya yinto ebaluleke kakhulu echaphazela ifuthe lokucoca umoya we-HEPA. Ukuphakama kwesantya somoya, okukhona kusezantsi ukusebenza kakuhle kokucoca, kokukhona kucace ngakumbi isiphumo kwi-PTFE lokucoca, kwaye iyonke Isihluzo se-PTFE sinesiphumo esisezantsi sokuhluza kune-fiberglass filter, kodwa ukuxhathisa kuphantsi kunoko kwefiber yeglasi yokucoca. Ke ngoko, izinto zokucoca i-PTFE zifaneleke ngakumbi ukwenza isihluzo esirhabaxa okanye esisezantsi-phezulu esisebenzayo, kunye nezinto zokucoca ifayibha zeglasi zifanelekile ngakumbi kwimveliso. Isihluzo esisebenzayo okanye esisebenza kakhulu. Isihluzo seglasi yefayibha HEPA enokucaciswa kwe-610×610×150mm ingaphantsi kune-610×610×90mm yeglasi yefayibha ye-HEPA yokucoca, kwaye ukusebenza kohluzo kubhetele kune-610×610×90mm yeglasi yefiber HEPA filter. Okwangoku, ixabiso lezinto zokucoca ezicocekileyo ze-PTFE liphezulu kunelo leglasi yefayibha. Nangona kunjalo, xa kuthelekiswa nefiber yeglasi, i-PTFE inokumelana nobushushu obungcono, ukuxhathisa kwe-corrosion kunye ne-hydrolysis kunefiber yeglasi. Ngoko ke, izinto ezahlukeneyo kufuneka ziqwalaselwe xa kusenziwa isihluzo. Hlanganisa ukusebenza kobugcisa kunye nokusebenza kwezoqoqosho.
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Ixesha lokuposa: Jan-06-2019