Ivalvu yeglobhu ye-SDNR yoMzi-mveliso oMgangatho oPhezulu Umvelisi woMzi-mveliso waseTshayina
Yintoni ivalvu yeglobhu ye-SDNR?
Ivalvu yeglobhu ye-SDNRYenzelwe kwaye yenziwa ngokwemigangatho yangaphambili yaseJamani, iDIN kunye nemigangatho yaseYurophu yanamhlanje i-EN13709.Isetyenziswa kakhulu kumazwe akwiManyano yaseYurophu.
yivalvu yayo yokuvala ehamba ngomgca esetyenziselwa ukuqala, ukumisa okanye ukulawula ukuhamba kusetyenziswa ilungu lokuvala elibizwa ngokuba yidiski. Ukuvulwa kwesihlalo kutshintsha ngokulinganayo ngokuhamba kwediski efanelekileyo kwimisebenzi ebandakanya ukulawulwa kokuhamba. Iivalvu zeDIN-EN Globe zezona zifanelekileyo kwaye zisetyenziswa kakhulu ukulawula okanye ukumisa ukuhamba kolwelo okanye igesi ngepayipi ukuze kuthintelwe kwaye kulawulwe ukuhamba kolwelo kwaye zihlala zisetyenziswa kwiipayipi ezincinci.
iIvalvu yeglobhu ye-SDNRingasetyenziselwa 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 ukuze kutshintshwe uphawu lokuhamba okanye kubonelelwe ngokuhamba komthamo ophantsi, ukuncitshiswa kwengxolo, okanye ukunciphisa okanye ukususa i-cavitation.
ngokwesiqhelo kukho iipateni ezintathu eziphambili zomzimba okanye uyiloIvalvu yeglobhu ye-SDNR:
- 1). Ipateni eQhelekileyo (kwakhona njengeTee Pattern okanye uT – Ipateni okanye uZ – Ipateni)
- 2). Ipateni ye-Oblique (ekwaziwa ngokuba yiWye Pattern okanye iY – Pattern)
Iimpawu eziphambili zevalvu yeglobhu ye-SDNR?
Ipateni esemgangathweni (ipateni ethe tye)
Ipateni ye-engile
Ipateni eqhelekileyo enetywina leentsimbi
- 1). Umgama omfutshane wokuhamba kwediski (stroke) phakathi kweendawo ezivulekileyo nezivaliweyo,Iivalvu zeglobhu zeDIN-ENzilungele ukuba ivalvu kufuneka ivulwe kwaye ivalwe rhoqo;
- 2) .Izakhono ezilungileyo zokutywina
- 3). Kukho uluhlu olubanzi lwezakhono njengoko zifumaneka kwipateni esemgangathweni (ipateni eyomeleleyo), ipateni ye-Angle, kunye nepateni ye-Wye (ipateni ye-Y).
- 5). Kulula ukulungisa nokulungisa izihlalo, ngeenjongo ezahlukeneyo.
- 6). Ikwazi ukuthomalalisa kakuhle, ngokutshintsha ulwakhiwo lwesihlalo kunye nediski.
- 7). Isetyenziswa kakhulu kuwo onke amazwe akwimanyano yaseYurophu, nakwamanye amazwe.
- 8). Itywina le-Bellows liyafumaneka xa liceliwe.
Ukulawula uyilo lweediski
Ukulinganisela uyilo lwediski, i-DN200 nangaphezulu
Iinkcukacha zevalvu yeglobhu ye-SDNR
Iinkcukacha zevalvu yeDIN-EN Globe
| Uyilo kunye noMveliso | BS1873, DIN3356, EN13709 |
| Ububanzi obuqhelekileyo (DN) | DN15-DN400 |
| Uvavanyo loxinzelelo (PN) | PN16-PN40 |
| Ubuso ngobuso | I-DIN3202,BS EN558-1 |
| Ubukhulu beFlange | I-BS EN1092-1, GOST 12815 |
| Ubukhulu bokuwelda kwempundu | DIN3239,EN12627 |
| Uvavanyo kunye nokuhlolwa | I-DIN3230,BS EN12266 |
| Umzimba | 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 |
| IGAMA LENXALENYE | IZINTO EZISETYENZISWAYO | ||
| Umzimba o-1 | 1.0619(GS-C25) | 1.4308(CF8) | 1.4408(CF8M) |
| Umphezulu wesihlalo sediski esi-2 | X20Cr13 (1) | 1.4301(F304)+(1) | 1.4401(F316)+(1) |
| * Umphezulu wesihlalo | 13Cr (1) | SS304+(1) | SS316+(1) |
| Isiqu esi-3 | X20Cr13 (2) | 1.4301(F304)(2) | 1.4401(F316)(2) |
| I-Gasket ezi-4 | I-SS+grafayithi(4) | I-SS+grafayithi(4) | I-SS+grafayithi(4) |
| * Isihlalo esingasemva (esidibeneyo) | 13Cr(1) | SS304+(1) | SS316+(1) |
| Ibhonethi ezi-5 | 1.0619(GS-C25) | 1.4308(CF8) | 1.4408(CF8M) |
| Ukupakisha oku-6 | Igrafayithi(4) | Igrafayithi(4) | Igrafayithi(4) |
| I-7 Gland | 1.0619(GS-C25) | 1.4308(CF8) | 1.4408(CF8M) |
| I-nut yesiqu esi-8 | GGG40.3 (3) | GGG40.3 (3) | GGG40.3 (3) |
| 9 Ivili lesandla | Intsimbi | Intsimbi | Intsimbi |
| 10 Shim | SS304 | SS304 | SS304 |
| 11 I-nut ye-handwheel | SS304 | SS304 | SS304 |
| 12 Isikrufu | CK35 | CK35 | CK35 |
| Iibholiti zamehlo ezili-13 | A193 B7 | A193 B8 | A193 B8M |
| Iinati ezili-14 | A194 2H | A193 8 | A193 8M |
| Iphini yebholiti yeliso eli-15 | CK35 | CK35 | A2-70 |
| 16 Shim | CK35 | SS304 | SS304 |
| Iinati ezili-17 | A193 B7 | A193 B8 | A193 B8M |
| Iibholti ezili-18 | A194 2H | A193 8 | A193 8M |
- (1) Xa uceliwe: ujongene neStellite - Monel - Hastelloy - ezinye izinto
- (2) Xa uceliwe: 17 Cr - Monel - Hastelloy - ezinye izinto
- (3) Xa uceliwe: I-Cu Alloy
- (4) Xa uceliwe: PTFE - ezinye izinto
Umboniso weMveliso: ivalvu yeglobhu ye-SDNR
Usetyenziso lwevalvu yeglobhu ye-SDNR
Ivalvu yeGlobe yeDIN-EN isetyenziswa kakhulu kwiuluhlu olubanzi lweenkonzo, zombini iinkonzo zoxinzelelo oluphantsi kunye nolwelo oluphezulu.
- 1). Ulwelo: Amanzi, umphunga, umoya, ipetroliyam ekrwada kunye neemveliso zepetroliyam, igesi yendalo, igesi econdensate, izisombululo zobuchwepheshe, ioksijini, iigesi ezingamanzi nezingenalo ugonyamelo
- 2). Iinkqubo zamanzi ezipholileyo ezifuna ukwahlulwahlulwa kunye nokulawulwa kokuhamba kwamanzi.
- 3). Inkqubo yeoyile yepetroli efuna ukuvaleka.
- 4). Ioyile negesi, Amanzi okuhambisa amanzi, ukutya kweekhemikhali, iRefinery, ukukhupha umoya we-condenser, kunye neenkqubo zokukhupha amanzi amdaka.
- 5). Yenzelwe imibhobho ekhutshwa rhoqo, okanye ukuthomalalisa ulwelo kunye negesi ephakathi
