Ivalvu yeglobe yokuthambisa ekumgangatho ophezulu yoMzi-mveliso oPhezulu Umthengisi wefektri waseTshayina Umvelisi
Yintoni ivalvu yeglobe yeThrottling?
Iivalvu zeglobe ziivalvu zokuvala ezihamba ngomgca ezisetyenziselwa ukuqala, ukumisa okanye ukulawula ukuhamba kusetyenziswa ilungu lokuvala elibizwa ngokuba yidiski. Isihlalo sevalvu yeglobe siphakathi kwaye sihambelana nombhobho, kwaye ukuvulwa kwesihlalo kuvalwa ngediski okanye iplagi. Idiski yevalvu yeglobe ingavala ngokupheleleyo indlela yokuhamba okanye ingasuswa ngokupheleleyo. Ukuvulwa kwesihlalo kutshintsha ngokulinganayo ngokuhamba kwediski, nto leyo efanelekileyo kwimisebenzi ebandakanya ukulawulwa kokuhamba. Iivalvu zeglobe zifanelekile kwaye zisetyenziswa kakhulu ukulawula okanye ukumisa ukuhamba kolwelo okanye igesi kumbhobho ukuze kuthintelwe kwaye kulawulwe ukuhamba kolwelo kwaye zihlala zisetyenziswa kwiipayipi ezincinci.
Ivalvu yeglobhu yokutshayela yenye yezona ndlela zidumileyo zoyilo lweevalvu zeglobe, zenkqubo ye-US kunye ne-API. Ububanzi bangaphakathi, izixhobo, ubuso ngobuso, ubukhulu bodonga, ubushushu boxinzelelo, zichazwa yi-ASME B16.34.
Ukongeza, kuxhomekeke kuyilo lwesihlalo kunye nediski, umthwalo wezihlaloIvalvu yeglobhu yokutshayelainokulawulwa kakuhle ngesiqu esikrufulwe ngezikrufu. Amandla okutywinaIvalvu yeglobhu yokutshayelaziphezulu kakhulu. Zingasetyenziselwa umsebenzi xa ungekho emsebenzini. Ngenxa yomgama omfutshane wokuhamba kwediski phakathi kweendawo ezivulekileyo nezivaliweyo,Ivalvu yeglobhu yokutshayelaZilungele ukuba ivalvu kufuneka ivulwe kwaye ivalwe rhoqo. Ngoko ke, iivalvu zeglobe zingasetyenziselwa imisebenzi eyahlukeneyo.
iIvalvu yeglobhu yokutshayelaingasetyenziselwa neenjongo zokuqhobosha. Iivalvu ezininzi ezihlala umntu omnye zisebenzisa ulwakhiwo lwekheji okanye uhlobo lwe-retainer ukugcina iringi yesihlalo, ukubonelela ngesikhokelo seplagi yevalvu, kunye nokubonelela ngeendlela zokuseka iimpawu ezithile zokuhamba kwevalvu. Ingatshintshwa ngokulula ngokutshintsha iindawo zokusika ukutshintsha uphawu lokuhamba okanye ukubonelela ngomthamo ophantsi.ukuhamba, ukunciphisa ingxolo, okanye ukunciphisa okanye ukuphelisa i-cavitation.
Eyona nto iphambili kwi-Throttling globe valve
- 1) .Izakhono ezilungileyo zokutywina
- 2). Umgama omfutshane wokuhamba kwediski (stroke) phakathi kweendawo ezivulekileyo nezivaliweyo,Iivalvu zeglobhu ze-ASMEzilungele ukuba ivalvu kufuneka ivulwe kwaye ivalwe rhoqo;
- 3).Ivalvu yeglobhu ye-ASME ingasetyenziswa njengevalvu yokujonga ukumisa ngokutshintsha uyilo kancinci.
- 4).TNazi iindlela ezahlukeneyo zobuchule ezifumanekayo kwiindlela ze-tee, Wye, kunye ne-angle body.
- 5).Ukuyilungisa nokuyifaka kwakhona izihlalo ngokulula, ngeenjongo ezahlukeneyo.
Iinkcukacha zobugcisa zevalvu yeglobe yeThrottling
| Uyilo kunye noMveliso | BS1873/ASME B16.34 |
| I-NPS | 2"-30" |
| Uvavanyo loxinzelelo (Udidi) | Iklasi150-Iklasi4500 |
| Ubuso ngobuso | I-ANSI B16.10 |
| Ubukhulu beFlange | I-AMSE B16.5 |
| Ubukhulu bokuwelda kwempundu | I-ASME B16.25 |
| Uvavanyo lobushushu boxinzelelo | I-ASME B16.34 |
| Uvavanyo kunye nokuhlolwa | I-API598 |
| Bdoy | Intsimbi yekhabhoni, Intsimbi engatyiwayo, Intsimbi ye-alloy |
| Isihlalo | intsimbi engatyiwayo, intsimbi ye-alloy, i-Stellite coating. |
| Umsebenzi | ivili lesandla, igiya lesandla, i-actuator yombane, i-actuator yomoya |
| Ipateni yomzimba | Ipateni eqhelekileyo (iphethini ka-T okanye uhlobo luka-Z), ipateni ye-Angle, ipateni ka-Y |
Izinto zokuHlola eziQhelekileyo kwi-API 600
| Ikhowudi yokuHlola | Umphezulu weRingi yeSihlalo Inxalenye yeSibini | Umphezulu weWedge Icandelo 3 | Isiqu Inxalenye yeNombolo 4 | Isihlalo esingasemva Inxalenye yeSigaba 9 |
| 1 | F6 | F6 | F6 | F6 |
| 2 | F304 | F304 | F304 | F304 |
| 5 | I-Stellite | I-Stellite | F6 | F6 |
| 8 | I-Stellite | F6 | F6 | F6 |
| 9 | IMonel | IMonel | IMonel | IMonel |
| 10 | F316 | F316 | F316 | F316 |
| 13 | I-alloy 20 | I-alloy 20 | I-alloy 20 | I-alloy 20 |
Iimveliso zibonisa: Ivalvu yeglobe ethontsizayo
Ukusetyenziswa kwevalvu yeglobhu yeThrottling
Ivalvu yeGlobe ye-ASMEIsetyenziswa kakhulu kwiinkonzo ezahlukeneyo; zombini iinkonzo zoxinzelelo oluphantsi kunye nolwelo oluphezulu. Iindlela eziqhelekileyo zokusetyenziswa kweevalvu zeglobe zezi:
- 1). Yenzelwe imibhobho ekhutshwa rhoqo, okanye ukuthomalalisa ulwelo kunye negesi ephakathi
- 2). Ulwelo: Amanzi, umphunga, umoya, ipetroliyam ekrwada kunye neemveliso zepetroliyam, igesi yendalo, igesi econdensate, izisombululo zobuchwepheshe, ioksijini, iigesi ezingamanzi nezingenalo ugonyamelo
- 3).Iinkqubo zamanzi okupholisa ezifuna ukulawulwa kokuhamba kwamanzi.
- 4).Inkqubo yeoyile yepetroli efuna ukuvaleka.
- 5).Iinkqubo zokulawula ivalvu.
- 6).Iiventilasi eziphezulu kunye needreyini ezisezantsi.
