Izinhlobo Zamavavu Asetshenziswa Embonini Kawoyela Negesi

Izinhlobo Zamavavu Asetshenziswa Embonini Kawoyela Negesi

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Funda ngezinhlobo ezahlukene zamavalvu asetshenziswa embonini kawoyela negesi kanye nomehluko wawo: I-API kanye nesango le-ASME, imbulunga, isheke, ibhola, nemiklamo yovemvane (okwenziwa ngesandla noma okucushiwe, ngemizimba efojiwe kanye neyabalingisi).Kafushane nje, ama-valve angamathuluzi emishini asetshenziswa ekufakweni kwamapayipi ukulawula, ukulawula nokuvula/ukuvala ukugeleza nokucindezela koketshezi.Amavalvu afojiwe asetshenziselwa amapayipi amancane noma amapayipi anomfutho ophezulu, amavalvu asakazwa amapayipi angaphezu kwamayintshi angu-2.

IYINI IVALVI?

Izinhlobo ezahlukene zamavalvu asetshenziswa embonini ye-petrochemical zihambisana nanoma yikuphi okulandelayo:
1. Qala/misa ukugeleza koketshezi (ama-hydrocarbon, uwoyela negesi, isitimu, amanzi, ama-asidi) ngepayipi (isibonelo: i-valve yesango, i-valve yebhola, i-butterfly valve, i-valve yesango lommese, noma i-valve yepulaki)
2. Linganisa ukugeleza koketshezi ngepayipi (isibonelo: i-globe valve)
3. Lawula ukugeleza koketshezi (i-valve yokulawula)
4. Shintsha isiqondiso sokugeleza (isibonelo ivalvu yebhola enezinhlangothi ezi-3)
5. Lawula ingcindezi yenqubo (i-valve yokunciphisa ingcindezi)
6. Vikela isistimu yamapayipi noma idivayisi (ipompo, injini, ithangi) ekucindezelweni ngokweqile (ukuphepha noma ukukhululeka kokucindezela) noma ukucindezela emuva (i-valve yokuhlola)
7. Hlunga udoti ogeleza epayipini, ukuvikela okokusebenza okungenzeka konakaliswe izingxenye eziqinile (y nezihlungi zikabhasikidi)

I-valve ikhiqizwa ngokuhlanganisa izingxenye eziningi zemishini, eziyisihluthulelo kube umzimba (igobolondo elingaphandle), i-trim (inhlanganisela yezingxenye ezimanzi ezithathelwanayo), isiqu, ibhonethi, kanye nomshini wokusebenza (i-lever manual, igiya noma i-actuator).

Amavalvu anosayizi omncane wokubhoboza (ngokuvamile ama-intshi angu-2) noma adinga ukumelana okuphezulu nokucindezela kanye nezinga lokushisa akhiqizwa ngemizimba yensimbi eyenziwe ngomgunyathi;amavalvu okuthengisa angaphezu kwamayintshi angu-2 ububanzi afaka izinto ezisansimbi zomzimba.

IVALIVU NGOKWENZIWA

● IMVAVELI YEsango: Lolu hlobo lusetshenziswa kakhulu ekufakweni kwamapayipi namapayipi.Amavalvu esango ayimishini yokunyakaza eqondile esetshenziswa evula futhi avale ukugeleza koketshezi (i-valve yokuvala).Amavalvu esango angeke asetshenziselwe ukufaka i-throttling, okungukuthi ukulawula ukugeleza koketshezi (iglobhu noma amavalvu ebhola kufanele asetshenziswe kulokhu).Ngakho-ke, i-valve yesango ivuleka noma ivalwe ngokugcwele (ngamasondo ashintshwayo, amagiya noma ama-actuator kagesi, i-pneumatic kanye ne-hydraulic)
● I-GLOBE VALVE: Lolu hlobo lwevalvu lusetshenziselwa ukumpintsha (ukulawula) ukugeleza koketshezi.Ama-valve e-globe nawo angavala ukugeleza, kodwa kulo msebenzi, ama-valve esango ayakhethwa.Ivalvu yembulunga idala ukwehla komfutho epayipini, njengoba uketshezi kufanele ludlule ephasejini elingewona umugqa.
● HLOLA IVAVAVU: lolu hlobo lwevalvu lusetshenziselwa ukugwema ukugeleza emuva ohlelweni lwamapayipi noma ipayipi elingase kulimaze izinto ezisebenza ezansi nomfula njengamaphampu, ama-compressor, njll. Uma uketshezi lunomfutho owanele, luvula ivalvu;uma ibuya (i-reverse flow) ekucindezelweni kokuklama, ivala i-valve - ukuvimbela ukugeleza okungafuneki.
● I-VALVE YEBHOLA: Ivalvu yeBhola iyivalvu yokujika kwekota esetshenziselwa ukufaka isicelo sokuvala.Ivalvu ivula futhi ivale ukugeleza koketshezi ngebhola elakhelwe ngaphakathi, elizungeza ngaphakathi komzimba wevalvu.Amavalvu ebhola ayindinganiso yemboni yezinhlelo zokusebenza ezivaliwe futhi alula futhi aminyene kakhulu kunamavalvu esango, asebenza ngezinjongo ezifanayo.Imiklamo emibili eyinhloko iyantanta kanye ne-trunnion (uhlangothi noma ukungena okuphezulu)
● IVAVA YOBUTHEMBEKA: Lena ivalvu eguquguqukayo, eyongayo, yokulungisa noma yokuvula/ukuvala ukugeleza koketshezi.Amavalvu ovemvane ayatholakala ngedizayini eqondile noma eyi-eccentric (okukabili/kathathu), anomumo ohlangene futhi aya ngokuya aqhudelana ngokuqhathaniswa namavalvu ebhola, ngenxa yokwakhiwa kwawo okulula kanye nezindleko.
● I-PINCH VALVE: Lolu wuhlobo lwevalvu enyakazayo eqondile engasetshenziselwa ukucisha nokuvala uhlelo lokusebenza lwamapayipi aphatha izinto eziqinile, ama-slurries noketshezi oluminyene.I-valve yokuncinza ineshubhu lokuncinza ukuze lilawule ukugeleza.
● I-PLUG VALVE: I-valve yokuxhuma ihlukaniswa njenge-valve yokujika kwekota yezinhlelo zokusebenza zokuvala.Ama-valve amapulaki okuqala alethwa amaRoma ukuze alawule amapayipi amanzi.
● IVAVAZI YOKUVIKELA: Ivalvu yokuphepha isetshenziselwa ukuvikela uhlelo lwamapayipi emicindezelweni eyingozi ngokweqile engasongela ukuphila komuntu noma ezinye izimpahla.Empeleni, i-valve yokuphepha ikhulula ingcindezi njengoba inani elibekiwe leqiwa.
● IVALIVA LOKULAWULA: lawa amavalvu okwenza izinqubo eziyinkimbinkimbi ze-petrochemical.
● I-Y-STRAINERS: nakuba ingezona i-valve ngendlela efanele, izihlungi ze-Y zinomsebenzi obalulekile wokuhlunga udoti futhi zivikele izinto ezisetshenziswa ezansi nomfula ezingase zonakaliswe ngenye indlela.


Isikhathi sokuthumela: Oct-26-2019