Ubude besakhiwo seevalvu zetsimbi kwiinkqubo zemibhobho eneflanged Imibhobho kunye noxinzelelo lwezixhobo kunye nesikimu sovavanyo lokuvuza

Ubude besakhiwo seevalvu zetsimbi kwiinkqubo zemibhobho eneflanged Imibhobho kunye noxinzelelo lwezixhobo kunye nesikimu sovavanyo lokuvuza

Izalathiso zibandakanyiwe KWISICATSHULWA SOMGANGATHO WAseYurophu KWINDAWO EZIFANELEKILEYO, KUHLANGANISA IMIGANGATHO YOKUBHEKISISA OKANYE NGAPHANDLE KWEMIHLA, KUNYE NAMANQAKU AVELA KWEZINYE IIMPAPASHO (IMIGANGATHO EKHANJWAYO INQATSHELWE NGEZANTSI). Kwimeko yomgangatho we-REFERENCE ephawulwe ngomhla wokugqibela, ukulungiswa kunye nokuhlaziywa kuya kusebenza kuphela ukuba lo MGANGATHO waseYurophu ubonelela ngokwamkelwa kwenguqu elandelayo eguqulweyo okanye elungisiweyo yoMgangatho wesalathiso. Ngemigangatho yereferensi engaphawulwanga ngomhla wokugqibela, inguqulelo ye-*** iyasetyenziswa. (ubuso ngobuso (FTF)) ubude bokwakha (kwivalvu ethe ngqo) bubonakaliswa ngeemilimitha...
Intshayelelo
Iitafile zobude besakhiwo (ubuso ngobuso kunye neziko ngobuso) zilungiselelwe i-EN 558-1 i-valve ze-metric series kunye ne-EN 558- 2 iivalvu ze-intshi ze-intshi.
Uthotho olusisiseko kulo MGANGATHO luthatyathwe KWISIHLOMELO A (ULWAZI).
Utshintsho kuthotho lwangaphambili alufakwanga ngokuzenzekelayo kulo mgangatho.
Ukubalwa koluhlu olusisiseko luhambelana nelo 1SO/DIS 5752:1993.
1 umda
Eli nqaku lixela i-intshi yobuso ngobuso (FTF) ubude boKWAKHIWA kunye neziko kubuso (CTF) ukwakhiwa kweevalvu zetsimbi kwiinkqubo zemibhobho eneflanged.
Ubude.
Eli candelo libandakanya iivalvu ezinolu didi lwephawundi lulandelayo kunye nobukhulu obuqhelekileyo (DN).
– Iiklasi 125, 150, 250, 300 kunye 600 phawundi.
DN10, DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125,DN150, DN200, DN250, DN300, DN50, DN50, DN50, DN50, DN50, DN800, DN900, DN1000, I-DN1200, DN1400, DN1600, DN1800 kunye ne-DN2000.
I-EN 26554 ichaza ubuso-ubude bokwakha ubuso bemigibe ezenzekelayo yomphunga.
2 ImiGangatho yeeReferensi
Izalathiso zibandakanyiwe KWISICATSHULWA SOMGANGATHO WAseYurophu KWINDAWO EZIFANELEKILEYO, KUHLANGANISA IMIGANGATHO YOKUBHEKISISA OKANYE NGAPHANDLE KWEMIHLA, KUNYE NAMANQAKU AVELA KWEZINYE IIMPAPASHO (IMIGANGATHO EKHANJWAYO INQATSHELWE NGEZANTSI). Kwimeko yomgangatho we-REFERENCE ephawulwe ngomhla wokugqibela, ukulungiswa kunye nokuhlaziywa kuya kusebenza kuphela ukuba lo MGANGATHO waseYurophu ubonelela ngokwamkelwa kwenguqu elandelayo eguqulweyo okanye elungisiweyo yoMgangatho wesalathiso. Kwimigangatho yereferensi engaphawulwanga ngomhla wokugqibela, inguqulelo yabo isetyenziswa.
Isigama seValve En736-1
Isahluko 1 Inkcazo yohlobo lweValve
I-TS EN 26554 Imigibe yomphunga ezenzekelayo eneflange - ubude besakhiwo esisecaleni
3 chaza
Ngenjongo yalo mgangatho, i-PrEN 736-1 kunye nezi nkcazo zilandelayo ziyasebenza.
3.1 (Ubuso ngobuso (FTF)) ubude bokwakha (ngokuthe ngqo ngokusebenzisa iivalvu) Umgama kwiimilimitha phakathi kweenqwelomoya ezimbini eziku ** ekupheleni komjelo womzimba kunye ne-perpendicular kumgca we-axis womzimba. Okanye njengoko kuchaziwe kumgangatho ofanelekileyo wemveliso yevalve (jonga iMifanekiso 1 kunye ne-2).
3.2(Iziko lobuso (CTF)) Ubude boKwakha (kwiivalvu ze-angular) Umgama kwiimilimitha phakathi kwenye yeendiza ezimbini ekupheleni kwendlela yomzimba kunye ne-perpendicular kumgca we-axis wendlela yokuhamba kunye nomgca we-axis kwelinye icala. yesicatshulwa somzimba (jonga iMifanekiso 1 kunye ne-2)
Ubude besakhiwo kunye nokunyamezela
4.1 Uthotho olusisiseko
Uluhlu olusisiseko lobuso-ngobuso (FTF) kunye nobude besakhiwo se-center-to-face (CTF) buya kuhambelana neenkcukacha ezikwiThebhile 1. IINKQUBO EZISISEKELO EZIZA KUQWALASELWA KUHLOBO NGALUNYE LWEVALIVI ZINIKWE KWITHEYBHILE 3 UKUYA KU-17 .
4.2 Ubude besakhiwo seevalvu ezingafakwanga
4.2.1 Iflethi eflethi ilungele iflenge yevalve:
- i-gray cast iron flanges, iklasi ye-125;
- Iiflange ze-alloy ze-Copper kwiiklasi ze-150 kunye ne-300 LBS.
Ubude bobuso bobuso (FTF) kunye neziko-buso (CTF) izakhiwo kufuneka zihambelane neMifanekiso 1 kunye ne-2.
4.2.2 Iiflange zeconvex ezisebenza kwivalvu ziquka:
– Flange nge 1.6mm phezulu kwetafile convex
- i-gray cast iron flange, iklasi ye-250 LBS.;
-Iintsimbi eziphoswe ngokuthambileyo kwiiklasi ze-150 kunye ne-300:
-Iintsimbi zentsimbi kwiiklasi ze-150 kunye ne-300.
– Flange nge 6.4mm phezulu itheyibhile convex
- Iiflange zentsimbi, iklasi ye-600 LBS.
Ubude be-face-face (FTF) kunye ne-center-face (CTF) izakhiwo kufuneka zihambelane neFigure 1 kunye ne-3.
4.2.3 Iiflange zokudityaniswa kweringi zifanelekile kwiivalvu ezenzelwe ukudibanisa ubuso beflange kunye nezangqa zetsimbi ezine-octagonal okanye i-elliptical profile structure. Ubude be-FTF kunye ne-CTF izakhiwo kufuneka zihambelane ne-FIG. 4.
4.2.4 Obunye ubuso be-flange bufanelekile kwi-Class 150, i-300 kunye ne-600 iivalve ezinemisonto yangaphakathi kunye yangaphandle okanye kunye neendawo ze-convex kunye ne-concave. Ubude bobuso ngobuso (FTF) kunye ne-center-to-face izakhiwo (CTF) kufuneka zihambelane neMifanekiso 1 kunye ne-5.
4.3 Ubude besakhiwo seevalvu ezinemigca
4.3.1 Kwiivalvu ezinegaskets eziqhagamshelwe kwi-elastic lining matching flanges, ubuso. Ubuso (FTF) KUNYE NEZIKO – UBUSO (CTF) UBUDE WOKWAKHIWA BUYA KUBA NGUMDA PHAKATHI KWEZIPHELO EZIMBINI ZIVALI PHANTSI KWEEMEKO ZOKUFAKWA. Umenzi uya kubonelela ngobude bonke bevalve phambi kokuhlanganisa.
4.3.2 Kwi-elasto-lined okanye i-valve ene-hard-lined njengophawu oluqhelekileyo lokuvelisa, ubukhulu be-lining kumphezulu ohambelanayo buya kubandakanywa phakathi kobude bobuso ngobuso (FTF) kunye nombindi-nobuso ( CTF) ulwakhiwo, ngaphandle kokuba uyilo lwevalvu ayibandakanyi le nxalenye. Ukuba UBUSO-BUSO (FTF) KUNYE NOBUDLA-BUSO (CTF) UBUDE obunikwe KWITHEYIBHILE 1 ABUYAYILWA UKUBANDAKANYEKA AMACANDELO ENTLANGANISO, KE UBUDE BOKULEKA OKU BUYA KONGEZWA KWI-BASE DIMENSIONS.
4.3.3 Kwiivalvu ezinelastiki okanye i-lining eqinile engeyiyo imbonakalo yesiqhelo yemveliso, ubukhulu be-lining kubuso be-flange bungongezwa kubuso ngobuso (F”TF) kunye ne-center-to-face (CTF) ubude besakhiwo bunikwe kwiTheyibhile yoku-I.
4.4 Ukunyamezelana (Tolerances) Ukunyamezelwa kobude bobuso-kubuso (FTF) kunye nezakhiwo ze-center-to-surface (CTF) zinikwe kwiThebhile 2.
Umfanekiso woku-1
IKHIWANE. 2 iflethi ecaba
IKHIWANE. 3 iflange econvex
(ubuso – ubuso) Ubude besakhiwo = Itheyibhile 1 imilinganiselo +X
(Icala eliphakathi) Ubude besakhiwo = Itheyibhile 1 imilinganiselo + 0.5x unit mm
Umzobo 4.
Qaphela.FTF=(ubuso – ubuso) ubude besakhiwo; CTF=(ubuso obuphakathi) ubude besakhiwo.
Iyunithi yimilimitha.
Imilinganiselo kwiTheyibhile yoku-1.
Umfanekiso wesi-5
Umbhobho kunye noxinzelelo lwezixhobo kunye neskimu sovavanyo lokuvuza 1, isiseko sokulungiselela 1. Gb50235-2003 "Iindustrial metal pipeline engineering Code Construction and acceptance Code" 2. Gb50236-2001 "Izixhobo zentsimi, inkqubo ye-welding welding engineering kunye neKhowudi yokwamkelwa" 2, injongo Uvavanyo loxinzelelo kunye nokuvuza kunye nokusetyenziswa okuphakathi emva kokwakhiwa kunye nokufakelwa kwaso nasiphi na isixhobo, umbhobho, Ukuze kuvavanywe umgangatho wokwakha kunye nokuthintela iingozi ezibangelwa ukubaleka, ukuqhuba, ukuvuza kunye nokuvuza ngexesha lemveliso, uvavanyo loxinzelelo kunye novavanyo lokuvuza kufuneka lwenziwe. kwiindawo ze-welding, iivalve kunye ne-flange joints phambi kovavanyo lokumisela. Ngokuqhelekileyo, isitya soxinzelelo kunye nombhobho wokuvavanya uxinzelelo lwamanzi njengento ephakathi
Okokuqala, isiseko sokulungiselela
1. Ikhowudi ye-Gb50235-2003 yoLwakhiwo kunye noKwamkelwa koBunjineli boMbhobho weMetal
2. I-Gb50236-2001 "Ikhowudi yoLwakhiwo kunye noKwamkeleka kobuNjineli be-Welding yeZixhobo zeNdawo kunye neNkqubo yePipeline"
Eyesibini, injongo yoxinzelelo kunye novavanyo lokuvuza kunye nokusetyenziswa kwe-medium
Emva kokwakhiwa kunye nokufakelwa kwaso nasiphi na isixhobo kunye nombhobho, ukwenzela ukujonga umgangatho wokwakha kunye nokuthintela iingozi ezibangelwa ukuqhuba, ukuqhuba, ukuvuza kunye nokuvuza ngexesha lemveliso, uvavanyo loxinzelelo kunye novavanyo lokuvuza kufuneka luqhutywe kwindawo yokuwelda, i-valve kunye ne-flange. uxhulumaniso phambi kovavanyo lokugunyazisa.
Ngokubanzi, isikhephe soxinzelelo kunye nombhobho wovavanyo loxinzelelo lwamanzi njengendawo ephakathi, kwaye ayisayi kusebenzisa ulwelo oluyingozi. Kumbhobho werhasi onedayamitha yegesi engaphezulu kwe-500mm, umthamo wokhuseleko wepaseji yombhobho unokunganeli xa uvavanyo loxinzelelo luqhutywa ngamanzi, ngoko ke umoya okanye initrogen ingasetyenziswa njengendawo yovavanyo loxinzelelo.
Ekubeni umngcipheko wovavanyo loxinzelelo lomoya mkhulu kakhulu kunovavanyo loxinzelelo lwamanzi, ngaphandle kweemfuno ezichazwe kumzobo woyilo lokubuyisela ulwelo kuvavanyo loxinzelelo kwaye uthathe amanyathelo athembekileyo okhuseleko, ezinye izixhobo kunye nemibhobho ayivumelekanga ukusebenzisa igesi yoxinzelelo. uvavanyo.
Ntathu. Ukulungiswa ngaphambi kovavanyo loxinzelelo kunye novavanyo lokuvuza
1. Ukufakwa kunye nokuhlolwa kwemibhobho yezixhobo kunye nezixhobo;
2. Jonga ngokuphindaphindiweyo izixhobo kunye nombhobho phantsi kovavanyo loxinzelelo ukuze ubone ukuba inkqubo ichanekile;
3. Ngaphambi kovavanyo loxinzelelo, zonke iivalve zokhuseleko kunye ne-pressure gauges kufuneka zivalwe kwi-valve yengcambu, kwaye izixhobo ezifanelekileyo kufuneka zibekwe zodwa okanye zisuswe ukuze zithintele ukukhupha okanye umonakalo ogqithiseleyo;
4. Coca indawo yovavanyo loxinzelelo kunye novavanyo lokuvuza
5. Abasebenzi abathatha inxaxheba kuvavanyo loxinzelelo kunye novavanyo lokuvuza baphumelele uqeqesho lobugcisa;
6. Lungisa ipompo yoxinzelelo lwamanzi, ipompo yoxinzelelo lomoya kunye nezinye izixhobo zovavanyo loxinzelelo kunye nerekhodi yovavanyo loxinzelelo;
7. Ukuba kukho ukugquma kwangaphandle, kufuneka kuqhutywe emva kovavanyo loxinzelelo.
Isine, iimfuno zokwakha zovavanyo
1. Ukongeza kwipeyinti kunye nokufakwa kwe-thermal, ukufakwa kombhobho kusebenza ngaphakathi kwendawo yokuvavanya kugqitywe ngokwemizobo, kwaye kuphumelele ukuhlolwa ngokusuphavayiza kunye nabasebenzi bezobugcisa be-site.
2. Ngexesha lovavanyo loxinzelelo, ixesha lokuvavanya, uxinzelelo kunye nexesha lokuzinza kufuneka lihlangabezane neemfuno zoyilo kwaye lwenziwe ngokuhambelana nemimiselo efanelekileyo.
3. Xa uhlola izixhobo kunye nemibhobho yemoto, icala kunye necala elichasene ne-flange kunye ne-flange cover ayikwazi ukuma.
4. Umbhobho ufanelekile ekuhlolweni okungonakalisi kwaye ufikelela kumlinganiselo wokufumanisa.
5. I-gauge yoxinzelelo lovavanyo ifanelekile, kwaye ukuchaneka kwayo akukho ngaphantsi kwe-1.5 grade ngexesha lovavanyo. Umlinganiselo opheleleyo wetheyibhile kufuneka ube ngamaxesha angama-1.5 ~ 2 oxinzelelo lokuvavanya, kwaye i-gauge yoxinzelelo lwecandelo lombhobho akufanele libe ngaphantsi kweengcezu ezi-2.
6. Ukwahlula ngokufanelekileyo umbhobho ophantsi kovavanyo kwiisistim ezingabalulekanga ezineebhodi ezingaboniyo okanye eminye imilinganiselo, iipleyiti zesignali ezijingayo kwindawo eyedwa, kunye nokudibanisa imibhobho okwethutyana kunye nezixhobo zokuqinisa zigqityiwe.
7. Zonke iimvavanyo zoxinzelelo kunye noomatshini bomoya-moya balungile.
I-8 kwinkqubo yovavanyo loxinzelelo, izixhobo zoxinzelelo, umbhobho onjengengxolo engaqhelekanga, ukuhla koxinzelelo, ukuxobula ipeyinti yomphezulu, isalathisi sokulinganisa uxinzelelo asishukumi okanye sijingi sibuye sibuye naphambili kunye nezinye iimeko ezingaqhelekanga, kufuneka luyeke ngokukhawuleza uvavanyo, ukunciphisa uxinzelelo ukufumana. phandle unobangela, yimeko ethile ekugqibeni ukuba uqhubeke novavanyo.
Isihlanu, imigangatho yomgangatho wovavanyo loxinzelelo lokuvuza
1. Isixhobo sokugcina ulwelo phantsi koxinzelelo lwe-atmospheric siya kukhululeka ekuvuzeni ngexesha lovavanyo lokutofa kwamanzi.
2. Kwizixhobo ezinoxinzelelo lokusebenza ngaphantsi kwe-50KPa (uxinzelelo lwe-gauge), i-weld seams iya kuhlolwa nge-** shuo oil. Ukuba kukho nasiphi na isiphene, siya kupheliswa kwaye uvavanyo lokuqina luya kwenziwa phantsi koxinzelelo lokusebenza emva kokupheliswa. Ixesha ziiyure ezingama-24, kwaye umyinge wokuvuza awudluli kwi-0.25% ngeyure.
3. Uxinzelelo olusebenzayo kwi-50-700 kpa yoxinzelelo (itafile) yezixhobo, kunye noxinzelelo olulingana namaxesha angama-1.25 uvavanyo lwamandla ovavanyo, ixesha lemizuzu emi-5, emva koko lawela kuxinzelelo lokusebenza lokuhlola, ukuba kukho iziphene, ukuphelisa. , Ukuphelisa uvavanyo kuxinzelelo lokusebenza ngokusondeleyo amadigri, emva kwexesha leeyure ze-24, ixabiso eliqhelekileyo lokuvuza aliyi kudlula i-0.25% ngeyure.
4. Izixhobo ze-vacuum kufuneka zibe kwi-200KPa (uxinzelelo lwe-gauge) uvavanyo lwamandla kwimizuzu emi-5, kwaye uphelise iziphene ezifunyenwe kuvavanyo, kwaye emva koko i-100KPa (i-gauge pressure) yovavanyo loxinzelelo lovavanyo lokuqina, ixesha leeyure ezingama-24, ukuvuza okuphakathi akwenzi. ngaphaya kwe-0.25% ngeyure.
5. Kwizixhobo ezineemfuno ezikhethekileyo zokuyila, uvavanyo luya kwenziwa ngokweemfuno zoyilo.
Isithandathu, uvavanyo lokuvuza koxinzelelo lomoya
1. Uxinzelelo lovavanyo luyi-1.25 ngamaxesha oxinzelelo loyilo
I-2 yovavanyo loxinzelelo lwesantya sokunyusa akufunekanga ibe nkulu kune-50KPa / min, inyuse kuxinzelelo lovavanyo lwe-50% yeka i-3min yokukhangela, ukuba akukho nto ingaqhelekanga, ngoko i-10% yoxinzelelo lovavanyo lwesinyathelo ngesinyathelo sokunyusa. Yeka i-10min kwinqanaba ngalinye, yima i-10min emva kokufikelela kuxinzelelo oluyilwe, kwaye uhlolisise ngokucophelela zonke iindawo ukuba kusekho ukungaqhelekanga, uxinzelelo lunokunyuswa kuxinzelelo lovavanyo. Yeka i-10min ukuba akukho nyathelo-phantsi, akukho kuvuza kwaye akukho deformation ebonakalayo, ifanelekile.
3. Emva kokuba uvavanyo lwamandla oxinzelelo lufanelekile, uxinzelelo luyancitshiswa kuxinzelelo loyilo, kwaye ukuqina kuhlolwe ngokuxubha amanzi anesepha.
4. Ixesha lokumisa uxinzelelo loxinzelelo luya kuqinisekisa ukuba yonke inkqubo inexesha elaneleyo lokuhlola, apho kungabikho ukuvuza okanye i-depressurization phenomenon iya kwenzeka.
5 emva kokuba uvavanyo kufuneka lucuthwe kancinane uxinzelelo, ukukhupha izibuko kufuneka uzame ukusebenzisa inkqubo yombhobho ongenanto, njengombhobho wexeshana kufuneka uqhagamshelwe kwizinto ezikhutshwayo zangaphandle, ukukhutshwa kwezibuko akufanele kubekwe kwindawo rhoqo ngabasebenzi.
6. Kwimeko yokuvuza ngexesha lovavanyo loxinzelelo, akuvumelekanga ukulungiswa ngoxinzelelo. Kuyimfuneko ukukhulula uxinzelelo kunye nokuvavanya kwakhona uxinzelelo emva kokuba isiphene sipheliswe.
7. Uvavanyo lokuvuza kufuneka lugxininise ekuhlolweni kwebhokisi yokufaka i-valve, i-flange okanye uqhagamshelo lwentambo, ivalve ye-vent, ivalve yokukhupha, ivalve yokukhupha amanzi, i-gasket, i-welding port, akukho kuvuza kuvavanyo lwe-arhente yokuvuthela.
Uqhagamshelo lovavanyo lunokwenziwa ngokulula ngakumbi, ngokukhawuleza nangokukhuselekileyo kusetyenziswa isidibanisi esitywiniweyo OKUQINISEKILEYO seHeimple Machinery.
Tianjin Haiyipu Machinery Co., LTD. Lishishini lokuvelisa elikhethekileyo ekuboneleleni ngezinxibelelanisi ezikhawulezayo kunye nezisombululo. Inkampani ibeka uphando kunye nophuhliso, imveliso, ukuthengisa kunye nenkonzo emva kokuthengisa njengenye, ukubonelela abathengi ngesisombululo esihambelanayo sokudibanisa ngokukhawuleza. Emva kweminyaka yophuhliso, inkampani ibibambelele kwifilosofi yeshishini "umthengi kuqala, ukugqwesa", ibambelele kumgaqo othi "umthengi kuqala" ukubonelela ngeenkonzo ezisemgangathweni kubathengi bethu.