I-DBB Valve Ichazwa: Kungani Ama-Double Ball Ball Valve Esetshenziselwa Ukuhlukaniswa Okubalulekile

Ezikhungweni zikawoyela negesi, ezitshalweni zamakhemikhali, ezikhumulweni ze-LNG, nasezinkundleni zasogwini lolwandle, ukuhlukaniswa akuyona nje into evamile. Kuyimfuneko yokuphepha. Ngaphambi kokuba kuqale ukulungiswa kwephampu, i-compressor, ithuluzi, noma ingxenye yamapayipi engezansi komfula, abaqhubi kudingeka bazi ukuthi ingcindezi ihlukaniswe ngokuphelele futhi ayikwazi ukuvuza emuva endaweni yokusebenza.

Yilapho-keI-valve ye-DBBkuba yinto ebalulekile.

I-DBB imele ukuthiVimba kabili futhi wopha igazi. Lo mqondo ulula: izithiyo ezimbili zokuvala ezizimele ezinephuzu lokuphuma kwegazi phakathi kwazo. Empeleni, leli lungiselelo linikeza opharetha indlela ethembekile yokuqinisekisa ukuhlukaniswa ngaphambi kokuba umsebenzi wokulungisa noma wokuhlola uqale.

Phakathi kwezilungiselelo ezahlukene ze-DBB, i-ivalvu yebhola ephindwe kabiliisibe ngesinye sezixazululo ezisetshenziswa kakhulu ngoba ihlanganisa ukwakheka okuqinile, ukuvala okuthembekile, kanye nokufakwa okulula kube yinhlanganisela eyodwa ehlanganisiwe.

Ezinhlelweni eziningi zamapayipi zesimanje, ikakhulukazi ukusetshenziswa kolwandle kanye nokucindezela okuphezulu, ama-valve e-DBB ahlanganisiwe manje akhethwa kakhulu kunokufaka ama-valve amabili ebhola ahlukene anepayipi elengeziwe phakathi kwawo.

Iyini i-DBB Valve?

A I-valve ye-DBBinikeza:

• amaphuzu amabili okuzihlukanisa azimele
• uxhumano olulodwa lokukhipha igazi noma umoya phakathi kwazo

Inhloso ilula. Ngemva kokuba zombili izithiyo zokuzihlukanisa zivaliwe, umgodi ophakathi kwazo ungangeniswa umoya ngembobo yokuphuma kwegazi. Uma kungekho ngcindezi noma imidiya ephumayo, abaqhubi bayazi ukuthi zombili izivalo zibambe kahle.

Lesi sinyathelo sokuqinisekisa sibalulekile ezimweni zangempela zokusebenza. Ngisho nokuvuza okuncane ngesihlalo esigugile kungadala izingozi ezinkulu zokuphepha ngesikhathi sokulungiswa.

Ekufakweni okudala, ukusebenza kwe-DBB kwakuvame ukufezwa kusetshenziswa:

• amavalvu amabili ebhola ahlukene
• isigaba se-spool
• i-valve eyengeziwe yokuphuma kwegazi

Lelo lungiselelo lisekhona ezitshalweni eziningi. Kodwa-ke, liyakhula:

• ubunzima bokufaka amapayipi
• ukuxhumeka kwe-flange
• isisindo sokufakwa
• amaphuzu angaphandle okuvuza angaba khona

A ivalvu yebhola ephindwe kabiliihlanganisa izindlela ezimbili zebhola ngaphakathi komzimba we-valve eyodwa ene-central bleed port. Uhlelo lonke luba luncane kakhulu futhi kube lula ukulunakekela.

Kumaphrojekthi asogwini kanye nezinhlelo ze-modular skid, lokho kuncipha kwenani lamapayipi kanye ne-flange kungenza umehluko obonakalayo.

Indlela I-Double Ball Ball Valve Esebenza Ngayo

Isimiso sokusebenza asiyinkimbinkimbi.

Ngaphakathi komzimba wevalvu kunezivalo ezimbili ezihlukene zamabhola ezibekwe ngokulandelana. Phakathi kwazo kukhona umgodi oxhunywe kuvalvu ephuma igazi.

Uma ibhola lokuqala livala, ukugeleza kuyavinjelwa ohlangothini oluphezulu. Ibhola lesibili linikeza esinye isithiyo sokuvala esizimele ngezansi komfula. Ukuvula ivalvu ephuma igazi phakathi kwabo kukhulula ingcindezi ebambekile futhi kuqinisekisa ukuthi zombili izivalo zisebenza kahle yini.

Ezimweni zangempela zezitshalo, abaqhubi bavame ukusebenzisa i-bleed port ukuze:

• qinisekisa ukuhlukaniswa ngaphambi kokulungiswa
• imithombo yokudonsa amanzi evalelekile
• hlola ukuvuza kwesihlalo
• nciphisa ukucindezeleka ngokuphephile emgodini

Lesi esinye sezizathu ezenza ama-valve e-DBB asetshenziswe kabanzi emigqeni yesevisi eyingozi:

• ama-hydrocarbon
• igesi enomfutho ophezulu
• amakhemikhali anobuthi
• i-hydrogen
• I-LNG

I-valve yebhola eyodwa ejwayelekile ingahlukanisa ukugeleza, kodwa ayinikezi izinga elifanayo lokuqinisekisa.

Imiklamo ye-Floating vs Trunnion Double Ball Valve

Akuwona wonke ama-valve e-DBB ebhola eliphindwe kabili asebenzisa ukwakheka kwangaphakathi okufanayo. Imiklamo emibili evame kakhulu ukwakheka kwebhola elintantayo kanye nebhola elifakwe ku-trunnion.

Umklamo Webhola Elintantayo

Ukwakhiwa kwamabhola antantayo kuvamile ngobukhulu obuncane kanye nokusetshenziswa kokucindezela okuphakathi.

Kulo mklamo, ukucindezela komugqa kusunduza ibhola esihlalweni esingezansi ukuze kudalwe amandla okuvala. Isakhiwo silula kakhulu, okusiza ukunciphisa izindleko zokukhiqiza.

Ama-valve ebhola eliphindwe kabili antantayo asetshenziswa kabanzi ku:

• inqubo ejwayelekile yokuhambisa amapayipi
• izinhlelo zamanzi
• isevisi ye-hydrocarbon enomfutho ophakathi
• izinhlelo zokusebenza zosizo

Ezinhlelweni eziningi zezimboni, imiklamo entantayo isebenza kahle futhi kulula ukuyinakekela.

Kodwa-ke, i-torque yokusebenza iyanda njengoba usayizi wama-valve kanye nokucindezela kukhuphuka. Ezinhlelweni zamapayipi amakhulu, lokhu kuba umkhawulo osebenzayo.

Umklamo Ofakwe I-Trunnion

Amavalvu ebhola eliphindwe kabili afakwe ku-trunnion avame ukusetshenziswa ku:

• amapayipi amakhulu
• izinhlelo zegesi ezinomfutho ophezulu
• ukufakwa kwasogwini lolwandle
• izimo zesevisi ezinzima

Kulo mklamo, ibhola lisekelwa ngomshini ngama-trunnion bearings aphezulu naphansi. Esikhundleni sokuba ibhola liye esihlalweni, isihlalo sihambela ebholeni.

Lokhu kunikeza izinzuzo eziningana zokusebenza:

• i-torque yokusebenza ephansi
• ukuvalwa okuzinzile kakhulu ngaphansi kokushintshashintsha kwengcindezi
• ukusebenza okuthuthukisiwe ngobukhulu obukhulu
• ukulawula okungcono ngesikhathi sokusebenza komjikelezo ophezulu

Kumasistimu e-Class 600, 900, 1500, noma anengcindezi ephezulu, ama-valve e-DBB afakwe ku-trunnion ngokuvamile ayathandwa.

Onjiniyela abaningi bamapayipi bakhetha nemiklamo ye-trunnion yezinhlelo ezenzakalelayo ngoba ubukhulu be-actuator buba lula ukulawuleka.

Kungani Kufanele Usebenzise I-Double Ball Ball Valve Esikhundleni Sama-Valve Amabili Ahlukene?

Ngobuchwepheshe, ama-ball valve amabili ahlukene anoxhumano oluphuma igazi anganikeza ukusebenza kwe-DBB. Kodwa ama-DBB valve ahlanganisiwe anikeza izinzuzo eziningana ezisebenzayo eziba ezibalulekile kumaphrojekthi angempela.

Izindlela Ezimbalwa Zokuvuza

Ukuxhumeka ngakunye kwe-flange kudala elinye iphuzu lokuvuza langaphandle.

Ilungiselelo lendabuko elinama-valve amabili ahlukene livame ukudinga:

• ama-flange engeziwe
• ama-gasket engeziwe
• izingxenye ze-spool
• ukubhoboza okwengeziwe

I-valve yebhola ephindwe kabili ehlanganisiwe inciphisa inani lokuxhumeka kwangaphandle. Ezindaweni ezinkulu ezinama-valve angamakhulu, lokhu kunciphisa kakhulu ukukhishwa okungaba khona komoya ophumayo kanye nomsebenzi wokulungisa.

Izidingo Zesisindo Esincishisiwe Nesikhala

Ezinkundleni zasogwini kanye nama-FPSO, isikhala silinganiselwe futhi isisindo sesakhiwo sithinta ngqo izindleko zephrojekthi.

Izinkontileka eziningi ze-EPC zasogwini zisebenzisa ama-valve e-DBB ahlanganisiwe ikakhulukazi ngoba enza kube lula ukuhlelwa kwamapayipi futhi anciphise isisindo sokufakwa.

Uma kuqhathaniswa nezinhlangano zama-valve ezihlukene, ama-valve e-DBB aqinile avame ukudinga:

• insimbi esekela kancane
• ubude bokufakwa obufushane
• umsebenzi omncane wokuvikela ukushisa
• ukushintshwa kwamapayipi ambalwa

Ezinhlelweni zangaphansi kolwandle kanye nama-modular process skid, ukwakheka okufushane ngokuvamile kuyinzuzo enkulu.

Ukuqinisekiswa Kokuzihlukanisa Okulula

Enye yezinzuzo ezinkulu zokusebenza yikhono lokuqinisekisa ngokushesha ubuqotho bokuvala.

Ngemva kokuvala womabili amabhola, opharetha bavele bavule ivalvu ephuma igazi. Uma kungakhishwa ingcindezi, zombili izithiyo zokuvala zisebenza kahle.

Le nqubo ishesha futhi ilula kunokuhlola ingcindezi amavalvu amabili ahlukene ngamanye.

Ezimweni zokuvalwa lapho amaqembu okulungisa edinga ukuqinisekiswa okusheshayo kokuhlukaniswa, lokhu kuba usizo kakhulu.

Imiklamo Yomzimba Yezingcezu Ezintathu vs Eyokungena Ephezulu vs Eyodwa

Ukwakhiwa komzimba kuthinta kokubili ukufinyelela kokugcinwa kanye nezindleko zokusebenza zesikhathi eside.

Umzimba Onezingcezu Ezintathu

Amavalvu e-DBB anezicucu ezintathu asebenzisa izivalo zokugcina ezinamabholidi ezixhunywe emzimbeni ophakathi.

Lo mklamo uvumela ochwepheshe ukuthi basuse izingxenye zangaphakathi ngaphandle kokusika ivalvu epayipini. Ezindaweni zokuhluza kanye nezitshalo zamakhemikhali, lokhu kunganciphisa kakhulu isikhathi sokungasebenzi kokulungisa.

Ukwakhiwa kwezingxenye ezintathu kuvamile lapho kulindeleke ukuthi kushintshwe izihlalo ngezikhathi ezithile.

Umklamo Ongena Kakhulu

Amavalvu e-DBB angena phezulu avumela zonke izingxenye zangaphakathi ukuthi zifinyelelwe kusukela phezulu komzimba wevalvu.

Lo mklamo usetshenziswa kabanzi ku:

• izinhlelo zangaphansi kolwandle
• amapayipi okudlulisa
• amapulatifomu aphesheya kwezilwandle
• izinhlelo zamapayipi ezihlanganisiwe

Umzimba wevalvu uhlala uxhunywe epayipini ngesikhathi sokulungiswa, okusiza ukunciphisa isikhathi sokungasebenzi.

Emigqeni yesevisi ebalulekile enobubanzi obukhulu, ukwakhiwa okuphezulu ngokuvamile kuyindlela ekhethwayo.

Umzimba Onengxenye Eyodwa

Amavalvu e-DBB engxenye eyodwa aqinile futhi alula kodwa ngokuvamile awakwazi ukulungiswa ku-inthanethi.

Zivame ukusetshenziswa ku:

• isevisi yosizo
• imigqa yenqubo emincane
• izinhlelo zokusebenza ezingabizi kakhulu

Ngenkonzo yokuhlukaniswa ebalulekile, opharetha abaningi basathanda ukwakheka kwemizimba okulungisekayo.

Amavalvu e-DBB Ahlala Kahle Uma Eqhathaniswa Nawensimbi

Ukukhethwa kwezinto zesihlalo kuthinta:

• ukusebenza kokuvuza
• ikhono lokushisa
• ukumelana nokuguguleka
• impilo yesevisi

Amavalvu Ahlala Kahle

Amavalvu ebhola eliphindwe kabili ahlala phansi avame ukusebenzisa:

• I-PTFE
• i-PTFE eqinisiwe
• UKUBHEKA

Lezi zinto zinikeza ukuvala okuqinile kakhulu kanye ne-torque ephansi yokusebenza.

Amavalvu e-DBB athambile asetshenziswa kabanzi ku:

• isevisi yephethiloli
• izinhlelo zikawoyela
• ukucubungula amakhemikhali
• ukusetshenziswa kwe-hydrogen

Kodwa-ke, izinto ezithambile zinemikhawulo yokushisa futhi zingaguga ngokushesha uma zisetshenziswa ngendlela yokukhuhla.

Amavalvu Ahlala Ngensimbi

Amavalvu e-DBB ahlala ngensimbi aklanyelwe lokhu okulandelayo:

• izinhlelo zokushisa okuphezulu
• imidiya ehlukumezayo
• izimo zokucindezeleka okukhulu
• izinhlelo zokusebenza eziphephile emlilweni

Izihlalo nezindawo zebhola zivame ukumbozwa ngokuqinile kusetshenziswa izinto ezifana nalezi:

• I-Stellite
• I-Inconel
• i-tungsten carbide

Uma kuqhathaniswa nezihlalo ezithambile, izihlalo zensimbi zinikeza ukuqina okungcono ngaphansi kwezimo zokusebenza ezinzima.

Ama-valve amaningi e-DBB ahlala ngensimbi nawo aqinisekisiwe ukuthi:

• I-API 607
• I-API 6FA

ukusebenza okuphephile emlilweni.

Lapho Ama-valve e-DBB Evame Ukusetshenziswa Khona

I-valve yebhola eliphindwe kabili manje isetshenziswa kabanzi emikhakheni eminingana lapho ukuthembeka kokuhlukaniswa kubaluleke kakhulu.

Amapayipi kawoyela negesi

Kusetshenziswa ku:

• amakhanda emithombo
• iziteshi ze-compressor
• izinhlelo zokuqalisa ingulube
• amapulazi amathangi
• ama-skid enqubo

Abaqhubi bamapayipi basebenzisa ama-valve e-DBB ukuthuthukisa ukuphepha kokugcinwa nokunciphisa ingozi yokuvuza.

Amapulatifomu ase-Offshore kanye nama-FPSO

Izinhlangano ze-DBB ezincane zisiza ekunciphiseni:

• ukuminyana kwamapayipi
• isisindo sesakhiwo
• ubunzima bokulungisa

Amavalvu e-DBB afakwe ezinqeni eziqinile avame kakhulu ezinhlelweni zokukhiqiza zasogwini.

Isevisi ye-LNG kanye ne-Cryogenic

Ama-valve e-DBB e-cryogenic aklanyelwe amazinga okushisa afinyelela ku--196°C.

Izinto ezikhethekile kanye nokwakhiwa kwebhonethi ende kusiza ukuvimbela izinkinga zokuvala izinga lokushisa eliphansi.

Izinhlelo ze-Hydrogen

Ama-molecule e-hydrogen mancane kakhulu futhi kunzima ukuwagcina.

Ama-valve e-DBB anezinhlelo zokuvala ezisezingeni eliphezulu asetshenziswa kakhulu ku:

• iziteshi zokugcwalisa i-hydrogen
• izinhlelo zokuthutha i-hydrogen
• amaphrojekthi wamandla ahlanzekile

Izitshalo Zamakhemikhali Neze-Petrochemical

Izikhungo zamakhemikhali zivame ukudinga ukuhlukaniswa kabili kwe:

• imithombo yezindaba enobuthi
• uketshezi olubhubhisayo
• imigqa yenqubo eyingozi

Ukuxhumeka kokuphuma kwegazi kuvumela nokukhishwa kwamanzi okuphephile emgodini kanye nokuqinisekiswa kwengcindezi ngaphambi kokulungiswa.

Imininingwane Ebalulekile Okufanele Uyibukeze Ngaphambi Koku-oda

Lapho bekhetha ivalvu ye-DBB, onjiniyela bavame ukuhlola amapharamitha alandelayo ngokucophelela.

Onjiniyela kufanele futhi baqinisekise imininingwane yevalvu ephumayo. Kwezinye izinhlangano ezisezingeni eliphansi, ivalvu ephumayo iba yingxenye ebuthakathaka kakhulu ohlelweni.

Amaphutha Avamile Lapho Ukhetha I-DBB Valve

Amaphutha amaningana okucacisa avela ngokuphindaphindiwe kumaphrojekthi ezimboni.

Ukucabanga ukuthi wonke ama-valve e-DBB afana

Eminye imikhiqizo ethengiswa njengama-valve e-DBB isebenzisa ibhola elilodwa kuphela elinezihlalo ezimbili kunokuba amabhola amabili azimele.

Ukuze uthole isevisi yokuhlukaniswa okubucayi, hlala ubuyekeza umdwebo wesigaba se-valve ngokucophelela.

Ukunganaki Ukucindezela Komgodi Wokushisa

Uma uketshezi lubambeka phakathi kwamabhola amabili avaliwe, ukwanda kokushisa kungadala umfutho ophezulu kakhulu womgodi.

Ukuvikelwa okufanele kokukhululeka kwesikhala kubalulekile.

Ukukhetha Umklamo Womzimba Ongalungile

Ezinhlelweni zamapayipi ahlanganisiwe, ukufaka esikhundleni se-valve eyodwa kungaba kubi kakhulu futhi kudle isikhathi.

Ukufinyeleleka kokulungiswa kufanele kucatshangelwe ekuqaleni kwephrojekthi.

Ukubuka Ikhwalithi Yevalvu Egaziwe

Ukuhlanganiswa okopha kufanele kuhambisane nesilinganiso sokucindezela kanye nokumelana nokugqwala komzimba wevalvu eyinhloko.

Le mininingwane ngezinye izikhathi ayinakwa ngesikhathi sokuthenga.

Imicabango Yokugcina

Kumasistimu okusebenza anomfutho ophansi, ivalvu yebhola elilodwa elijwayelekile linganele.

Kodwa kuzicelo ezihilela:

• imithombo yezindaba eyingozi
• umfutho ophezulu
• izinhlelo zasogwini lolwandle
• ukudluliswa kwegesi
• ukuhlukaniswa kokugcinwa okubucayi

iklanywe kahleI-valve ye-DBBinikeza ikhambi eliphephile kakhulu nelinokwethenjelwa kakhulu.

Iivalvu yebhola ephindwe kabiliKusengenye yezindlela ezisebenziseka kakhulu zokulungiselela i-DBB ngoba ihlanganisa:

• ukufakwa okuncane
• izindlela ezincishisiwe zokuvuza
• ukuqinisekiswa kokuhlukaniswa okuthembekile
• ukufinyelela okulula kokulungisa

Njengoba izidingo zokuphepha ziqhubeka nokwanda kuzo zonke izimboni zikawoyela negesi, i-LNG, i-hydrogen, kanye namakhemikhali, izinhlelo zamavalvu e-DBB ezihlanganisiwe seziba yindlela ejwayelekile kunokuthuthukiswa okuzithandela.

Konjiniyela abakhetha ama-valve esevisi ebalulekile, ukubuyekeza ukwakheka kwangaphakathi kwangempela, ukwakhiwa kwezihlalo, isilinganiso sokucindezela, kanye nokufinyeleleka kokulungiswa ngokuvamile kubaluleke kakhulu kunokuqhathanisa intengo yodwa.