1. Okujwayelekile
Amavalvu alolu chungechunge asetshenziselwa ukuvala noma ukuvula amapayipi ohlelweni lwamapayipi ukuze kugcinwe ukusebenza okuvamile kohlelo.
2. Incazelo Yomkhiqizo
2.1 Imfuneko yobuchwepheshe
2.1.1 Dizayina futhi wenze: API600, API603, ASME B16.34, BS1414
2.1.2 Ubukhulu bokuphela kokuxhuma:ASME B16.5, ASME B16.47, ASME B16.25
2.1.3 Ubuso nobuso noma ekupheleni ukuya ekupheleni:ASME B16.10
2.1.4 Ukuhlola nokuhlola:API 598, API600
2.1.5 Osayizi Abazisholo:MPS2″～48″,Izilinganiso zekilasi lokuzisholo:Class150~2500
2.2 Amavalvu alolu chungechunge angama-manual (acushwe ngesondo lesandla noma ngebhokisi legiya) amavalvu esango aneziphetho ze-flange kanye nesiphetho sokushisela izinqe .Isiqu se-valve sinyakaza sibheke phezulu.Uma ujikisa isondo lesandla ngokwewashi, isango liyawa ukuze livale ipayipi;uma ujikisa isondo lesandla ngokuphambene newashi, isango liyaphakama ukuze livule ipayipi.
2.3 Isakhiwo bheka Fig.1, 2 and3.
2.4 Amagama nezinto zezingxenye ezisemqoka zibalwe kuThebula loku-1.
| Ingxenye Igama | Okubalulekile |
| Umzimba nebhonethi | I-ASTM A216 WCB,I-ASTM A352 LCB,I-ASTM A217 WC6, I-ASTM A217 WC9,I-ASTM A351 CF3,I-ASTM A351 CF3M I-ASTM A351 CF8,I-ASTM A351 CF8M,I-ASTM A351 CN7M I-ASTM A494 CW-2M,I-Monel |
| Isango | I-ASTM A216 WCB,I-ASTM A352 LCB,I-ASTM A217 WC6, I-ASTM A217 WC9,I-ASTM A351 CF3,I-ASTM A351 CF3M I-ASTM A351 CF8,I-ASTM A351 CF8M,I-ASTM A351 CN7M I-ASTM A494 CW-2M,I-Monel |
| isihlalo | I-ASTM A105,I-ASTM A350 LF2,F11,F22, I-ASTM A182 F304(304L）,I-ASTM A182 F316(316L） I-ASTM B462,Has.C-4,I-Monel |
| isiqu | I-ASTM A182 F6a,I-ASTM A182 F304(304L） ,I-ASTM A182 F316(316L）,I-ASTM B462,Has.C-4,I-Monel |
| Ukupakisha | I-graphite eboshwe kanye ne-graphite eguquguqukayo,I-PTFE |
| Isikhwama/inadi | I-ASTM A193 B7/A194 2H,I-ASTM L320 L7/A194 4, I-ASTM A193 B16/A194 4,I-ASTM A193 B8/A194 8, I-ASTM A193 B8M/A194 8M |
| I-Gasket | 304(316）+Igrafu,304(316）,Has.C-4, I-Monel,B462 |
| Isihlalo / Idiski / indawo | 13Kr,18Cr-8Ni,18Cr-8Ni-Mo,I-NiCu ingxubevange,25Cr-20Ni,I-STL |
3. Isitoreji, ukugcinwa, Ukufakwa kanye nokusebenza
3.1 Ukugcina nokunakekela
3.1.1 Amavalvu kufanele agcinwe egumbini elomile nelinomoya okahle.Iziphetho zephaseji kufanele zixhunywe ngekhava.
3.1.2 Amavalvu angaphansi kokugcinwa isikhathi eside kufanele ahlolwe futhi ahlanzwe njalo, ikakhulukazi ukuhlanzwa kwendawo yokuhlala ukuze kuvinjelwe umonakalo, futhi izindawo eziqediwe kufanele zigcotshwe ngamafutha avimbela ukugqwala.
3.1.3 Uma isikhathi sokugcina singaphezu kwezinyanga eziyi-18, amavalvu kufanele ahlolwe futhi kwenziwe amarekhodi.
3.1.4 Amavalvu afakiwe kufanele ahlolwe futhi alungiswe njalo.Amaphuzu okunakekela abalulekile ahlanganisa lokhu okulandelayo:
1) Ukuvala ubuso
2) Isiqu se-valve ne-valve stem nut.
3)Ukupakisha.
I-4) Ukungcola ebusweni bangaphakathi bomzimba we-valve kanye nebhonethi ye-valve
3.2 Ukufakwa
Ngaphambi kokufaka, qiniseka ukuthi ukuhlonzwa kwevalvu (okufana nemodeli, i-DN, 3.2.1PN nezinto ezibonakalayo) kumakwe ngokwezidingo zesistimu yamapayipi.
3.2.2 Ngaphambi kokufaka, hlola ngokucophelela iphaseji yevalvu kanye nobuso bokuvala.Uma kukhona ukungcola, kuhlanze kahle.
3.2.3 Ngaphambi kokufaka, qiniseka ukuthi wonke amabhawodi aboshwe ngokuqinile.
3.2.4 Ngaphambi kokufaka, qiniseka ukuthi ukupakisha kucindezelwe ngokuqinile.Nokho, ukunyakaza kwesiqu se-valve akufanele kuphazanyiswe.
3.2.5 Indawo yokufaka ivalvu kufanele yenze kube lula ukuhlola nokusebenza.Indawo ekhethwayo kufanele kube ukuthi ipayipi livundlile, isondo lesandla lingaphezulu, nesiqu se-valve sime mpo.
3.2.6 Ngevalvu evamise ukuvaleka, akufanelekile ukuyifaka endaweni lapho ingcindezi yokusebenza inkulu kakhulu ukugwema ukulimala kwesiqu se-valve.
3.2.7 Amavalvu ashiselwe amasokhethi kufanele okungenani ahlangabezane nezidingo ezilandelayo uma eshiselwe ukuze afakwe ohlelweni lwamapayipi esizeni:
1) Ukushisela kufanele kwenziwe ngumshiseli onesitifiketi sokufaneleka sokushisela esigunyazwe yiSigungu Sikahulumeni Sokushisela Nomshini Wokucindezela;noma umshiseli othole isitifiketi sokufaneleka sokushisela esichazwe ku-ASME Vol.Ⅸ.
I-2) Imingcele yenqubo ye-Welding kufanele ikhethwe njengoba kuchazwe kubhukwana lokuqinisekisa ikhwalithi yezinto zokushisela.
3) Ukwakheka kwamakhemikhali, ukusebenza kwemishini kanye nokumelana nokugqwala kwensimbi yokugcwalisa yomthungo wokushisela kufanele kuhambisane nesisekelo sensimbi.
3.2.8 Ivalvu ivamise ukufakwa, ingcindezi enkulu ngenxa yezisekelo, izesekeli namapayipi kufanele kugwenywe.
3.2.9 Ngemva kokufakwa, ngesikhathi sokuhlolwa kwengcindezi yohlelo lwamapayipi, i-valve kufanele ivuleke ngokugcwele.
3.2.10 Iphuzu okubelwa ngalo: uma ipayipi linamandla anele okuthwala isisindo sevalvu kanye netorque yokusebenza, lapho-ke akukho ndawo yokubhodla edingekayo, ngaphandle kwalokho i-valve kufanele ibe nephuzu lokushutheka.
3.2.11 Ukuphakamisa: ungasebenzisi isondo lesandla ukuze uphakamise futhi uphakamise ivalvu.
3.3 Ukusebenza nokusetshenziswa
3.3.1 Ngesikhathi sokusevisa, isango lamavalvu kufanele livuleke ngokuphelele noma livalwe ngokugcwele ukugwema ukulimala ngaphezulu kweringi yesihlalo nesango levalvu ngenxa yesivinini esikhulu.Angeke isetshenziselwe ukulungisa umthamo wokugeleza.
3.3.2 Uma uvula noma uvala ivalvu, sebenzisa isondo lesandla esikhundleni selever eyisiza noma sebenzisa elinye ithuluzi.
3.3.3 Ezingeni lokushisa lokusebenza, qiniseka ukuthi ingcindezi esheshayo ingaphansi kuka-1.1 izikhathi zengcindezi yokusebenza yezilinganiso zezinga lokushisa ku-ASME B16.34.
3.3.4 Izinto ezisetshenziswayo zokusiza ezokuphepha kufanele zifakwe epayipini ukuze kuvinjelwe ukucindezela kokusebenza kwevalvu ekushiseni okusebenzayo ukuthi kudlule ukucindezela okuphezulu okuvumelekile.
3.3.5 Ukushaywa nokushaqisa i-valve akuvunyelwe ngesikhathi sokuthutha, ukufakwa kanye nesikhathi sokusebenza.
3.3.6 Ukubola koketshezi olungaqinile, isibonelo, ukubola kolunye uketshezi kungabangela ukwanda kwevolumu futhi kuholele ekukhuphukeni komfutho osebenzayo, ngaleyo ndlela kulimaze i-valve futhi kubangele ukungena, ngakho-ke, sebenzisa amathuluzi okulinganisa afanelekile ukuze uqede noma unciphise izici ezingase zibangele ukubola. yoketshezi.
3.3.7 Uma uketshezi kuyi-condensate, lokhu kuzothinta ukusebenza kwevalvu, sebenzisa izinsimbi zokulinganisa ezifanele ukunciphisa izinga lokushisa loketshezi (isibonelo, ukuqinisekisa izinga lokushisa elifanele loketshezi) noma esikhundleni salo ufake olunye uhlobo lwevalvu.
3.3.8 Ngoketshezi oluzishisa ngokwalo, sebenzisa amathuluzi okulinganisa afanelekile ukuze uqinisekise indawo ezungezile kanye nengcindezi yokusebenza ingeqi indawo yayo yokuzikhela (ikakhulukazi qaphela ukukhanya kwelanga noma umlilo wangaphandle).
3.3.9 Uma kuba noketshezi oluyingozi, njengokuqhuma, oluvuthayo.Imikhiqizo enobuthi, i-oxidation, ayivunyelwe ukufaka esikhundleni sokupakisha ngaphansi kwengcindezi (nakuba i-valve inomsebenzi onjalo).
3.3.10 Qinisekisa ukuthi uketshezi alungcolile, okuthinta ukusebenza kwevalvu, aluqukethe izinto eziqinile, ngaphandle kwalokho amathuluzi okulinganisa afanele kufanele asetshenziselwe ukususa ukungcola nokuqinile, noma esikhundleni salo kufakwe olunye uhlobo lwevalvu.
3.3.11 Izinga lokushisa elivumelekile lokusebenza:
| Okubalulekile | izinga lokushisa | Okubalulekile | izinga lokushisa |
| I-ASTM A216 WCB | -29～425℃ | I-ASTM A217 WC6 | -29～538℃ |
| I-ASTM A352 LCB | -46～343℃ | I-ASTM A217 WC9 | --29～570℃ |
| I-ASTM A351 CF3(CF3M） | -196～454℃ | I-ASTM I-A494 CW-2M | -29～450℃ |
| I-ASTM A351 CF8(CF8M） | -196～454℃ | I-Monel | -29～425℃ |
| I-ASTM A351 CN7M | -29～450℃ |
| - |
3.3.12 Qinisekisa ukuthi i-material ye-valve yomzimba ifanele ukusetshenziswa endaweni ekwazi ukumelana nokugqwala kanye nokuvimbela ukugqwala.
3.3.13 Ngesikhathi sesevisi, hlola ukusebenza kokuvala njengokusho kwethebula elingezansi:
| Indawo yokuhlola | Ukuvuza |
| Ukuxhumana phakathi kwe-valve yomzimba nebhonethi | Uziro |
| Ukupakisha uphawu | Uziro |
| Isihlalo se-valve | Njengokucaciswa kobuchwepheshe |
3.3.14 Njalo uhlole ukuthi ubuso obuvaliwe bugqokile yini.Ukupakisha ukuguga nokulimala.Yenza ukulungisa noma ukushintshwa ngesikhathi uma ubufakazi butholakala.
3.3.15 Ngemva kokulungiswa, hlanganisa kabusha futhi ulungise ivalvu, ukusebenza kokuqina kokuhlola bese ubhala irekhodi.
3.3.16 Ukuhlolwa nokulungisa kwangaphakathi iminyaka emibili.
4. Izinkinga ezingenzeka, izimbangela kanye nezinyathelo zokulungisa
| Incazelo yenkinga | Okungaba imbangela | Izinyathelo zokulungisa |
| Ukuvuza ekupakisheni | Ukupakisha okucindezelwe ngokwanele | Phinda uqinise nati lokupakisha |
| Inani elanele lokupakisha | Engeza ukupakisha okwengeziwe | |
| Ukupakisha okonakele ngenxa yesevisi yesikhathi eside noma ukuvikelwa okungalungile | Shintsha ukupakisha | |
| Ukuvuza ebusweni obuhlezi bevalvu | Ubuso bezihlalo obungcolile | Susa ukungcola |
| Ubuso obugugile obuhlezi | Yilungise noma shintsha iringi yesihlalo noma isango levalvu | |
| Ubuso bezihlalo obonakele ngenxa yezinto eziqinile | Khipha izinto eziqinile oketshezini, lungisa noma shintsha iringi yesihlalo noma isango levalvu, noma ufake olunye uhlobo lwevalvu | |
| Ukuvuza ekuxhumekeni phakathi kwe-valve body nebhonethi yevalvu | Amabhawodi awaboshiwe kahle | Bopha amabhawodi ngendlela efanayo |
| Indawo yokuhlala eyonakele yomzimba we-valve kanye ne-valve bonnet flange | Yilungise | |
| I-gasket eyonakele noma ephukile | Faka esikhundleni i-gasket | |
| Ukuzungezisa okunzima kwesondo lesandla noma isango levalvu alikwazi ukuvuleka noma ukuvaleka | Ukupakisha okuqiniswe kakhulu | Khulula ngokufanelekile nati lokupakisha |
| Ukuguqulwa noma ukugoba kwe-gland evala uphawu | Lungisa indlala yokuvala uphawu | |
| I-valve stem nut elimele | Lungisa intambo futhi ususe ukungcola | |
| Intambo ye-valve stem nut egugile noma ephukile | Faka esikhundleni i-valve stem nut | |
| Isiqu se-valve egobile | Shintsha isiqu se-valve | |
| Indawo engcolile yomhlahlandlela wesango le-valve noma umzimba we-valve | Susa ukungcola endaweni yomhlahlandlela |
Qaphela: Umsebenzisi kufanele abe nolwazi olufanele kanye nesipiliyoni ngamavalvu.
5. Iwaranti
Ngemuva kokuthi i-valve isetshenzisiwe, isikhathi sewaranti yevalvu yizinyanga eziyi-12, kodwa asidluli izinyanga ezingama-24 ngemuva kosuku lokulethwa.Ngesikhathi sewaranti, umenzi uzohlinzeka ngesevisi yokukhanda noma izingxenye ezisele mahhala ngomonakalo odalwe yimpahla, ubungcweti noma umonakalo inqobo nje uma lokho kusebenza kulungile.
Isikhathi sokuthumela: May-19-2022