Iimveliso
Ivalvu yeSango leNtsimbi eyenziweyo
✧ Inkcazo
Iivalvu zesango lentsimbi eziqingqiweyo zisetyenziswa kakhulu kwizicelo zoshishino ngenxa yokwakhiwa kwazo okuqinileyo kunye nokukwazi ukumelana neemeko zoxinzelelo oluphezulu kunye nobushushu. Zihlala zikhethwa kwizicelo kwishishini leoyile negesi, kwizityalo zamandla, nakwizityalo zepetrochemical. Nazi ezinye zeempawu eziphambili kunye neenzuzo zeevalvu zesango lentsimbi eziqingqiweyo: Zomelele kwaye Zihlala ixesha elide: Iivalvu zesango lentsimbi eziqingqiweyo zenziwa kusetyenziswa inkqubo yokuqingqa, ezenza zibe namandla kakhulu kwaye zimelane noxinzelelo loomatshini. Oku kuzenza zilungele iindawo ezifuna kakhulu apho ukuqina kubaluleke kakhulu. Ukumelana noxinzelelo oluphezulu kunye nobushushu: Ezi valve zenzelwe ukusingatha izicelo zoxinzelelo oluphezulu kunye nobushushu obuphezulu, zibonelela ngesisombululo esithembekileyo sokulawula ukuhamba kwamanzi kwiimeko ezinzima zokusebenza. Iipropati eziBalaseleyo zokuQinisa: Zibonelela ngeempawu ezilungileyo zokutywina, zithintela ngokufanelekileyo ukuvuza xa ivalvu ivaliwe. Oku kubalulekile ekugcineni ukuthembeka kwenkqubo kunye nokuthintela ukulahleka kolwelo. Ukulahleka okuncinci koxinzelelo: Xa zivuliwe ngokupheleleyo, iivalvu zesango lentsimbi eziqingqiweyo zibonelela ngokulahleka okuncinci koxinzelelo, okuvumela ulawulo lokuhamba kakuhle kunye nokusetyenziswa kwamandla okuncitshisiweyo. Ukuguquguquka: Zifanelekile kuluhlu olubanzi lweziselo, nto leyo ezenza zibe luncedo kwiindlela ezahlukeneyo zokusebenza kwimizi-mveliso. Ukuthobela iMigangatho: Iivalvu zesango lentsimbi eziqingqiweyo zihlala ziyilwa kwaye zenziwe ngokuhambelana nemigangatho yemizi-mveliso, ukuqinisekisa ukuthembeka kwazo kunye nokusebenza ngokukhuselekileyo. Ngokubanzi, iivalvu zesango lentsimbi eziqingqiweyo zixatyiswa ngamandla azo, ukuqina, ukumelana noxinzelelo oluphezulu kunye nobushushu, iimpawu ezibalaseleyo zokutywina, kunye nokuguquguquka, okwenza zibe lukhetho olukhethwayo kwiindawo zoshishino ezifuna kakhulu.
✧ Iimpawu zevalvu yesango lentsimbi eyenziwe nge-API 602
1. Ulwakhiwo lulula kunevalvu yesango, kwaye kulula ngakumbi ukuyenza nokuyigcina ikwimeko entle.
2. Umphezulu wokutywina akulula ukuwunxiba nokukrwela, kwaye ukusebenza kokutywina kulungile. Akukho kutyibilika phakathi kwediski yevalvu kunye nomphezulu wokutywina womzimba wevalvu xa uvula naxa uvala, ngoko ke ukukrala nokukrwela akukubi kangako, ukusebenza kokutywina kulungile, kwaye ubomi benkonzo bude.
3.Xa uvula kwaye uvala, ukubetheka kwediski kuncinci, ngoko ke ukuphakama kwevalvu yokumisa kuncinci kunokwevalvu yesango, kodwa ubude besakhiwo bude kunobo bevalvu yesango.
4.I-torque yokuvula nokuvala inkulu, ukuvulwa nokuvala kunzima, kwaye ixesha lokuvula nokuvala lide.
5. Ukumelana nolwelo kukhulu, kuba umjelo ophakathi emzimbeni wevalvu uyagungqa, ukumelana nolwelo kukhulu, kwaye ukusetyenziswa kwamandla kukhulu.
6. Icala eliphakathi lokuhamba komoya Xa i-nominal pressure PN ≤ 16MPa, idla ngokuthatha ukuhamba phambili, kwaye i-medium inyuka isuka ezantsi kwe-valve disc; xa i-nominal pressure PN ≥ 20MPa, idla ngokuthatha ukuhamba okuchaseneyo, kwaye i-medium ihla isuka phezulu kwe-valve disc. Ukwandisa ukusebenza kwe-seal. Xa isetyenziswa, i-globe valve medium inokuhamba kwicala elinye kuphela, kwaye icala lokuhamba alinakutshintshwa.
7. Idiski idla ngokubola xa ivuliwe ngokupheleleyo.
✧ Iingenelo zevalvu yesango lentsimbi eyenziwe nge-API 602
Ngexesha lenkqubo yokuvula nokuvala ivalvu yeglobhu yentsimbi eyenziweyo, kuba ukungqubana phakathi kwediski nomphezulu wokutywina womzimba wevalvu kuncinci kunokwevalvu yesango, ayigugi.
I-stroke yokuvula okanye yokuvala yesiqu sevalvu imfutshane kakhulu, kwaye inomsebenzi wokunqunyulwa othembekileyo kakhulu, kwaye ngenxa yokuba utshintsho lwesango lesihlalo sevalvu luhambelana ne-stroke yediski yevalvu, lufanelekile kakhulu ekulungiseni isantya sokuhamba. Ke ngoko, olu hlobo lwevalvu lufanelekile kakhulu ekunqunyulweni okanye ekulawuleni nasekugobeni.
✧Iiparameter zeValve yeSango leNtsimbi eQhekeziweyo eFlanged End
| Imveliso | Ivalvu yeSango leNtsimbi eyenziweyo |
| Ububanzi obuqhelekileyo | I-NPS 1/2”, 3/4”, 1”, 1 1/2”, 1 3/4” 2”, 3”, 4” |
| Ububanzi obuqhelekileyo | Iklasi 600, 900, 1500, 2500. |
| Phelisa uQhagamshelo | I-flange edibeneyo, i-flange edibeneyo |
| Umsebenzi | Ivili lesiPhatho, i-Pneumatic Actuator, i-Electric Actuator, i-Bare Stem |
| Izixhobo | A105, A350 LF2, A182 F5, F11, F22, A182 F304 (L), F316 (L), F347, F321, F51, Alloy 20, Monel, Inconel, Hastelloy, Aluminium Bronze kunye nezinye ii-alloy ezikhethekileyo. |
| Ulwakhiwo | I-Screw & Yoke yangaphandle (OS&Y), Ibhonethi eneBolti, Ibhonethi eWelded okanye Ibhonethi yeSeal yoxinzelelo |
| Uyilo kunye noMvelisi | I-API 602, i-ASME B16.34 |
| Ubuso ngobuso | Umgangatho woMvelisi |
| Phelisa uQhagamshelo | I-SW (ASME B16.11) |
| I-BW (ASME B16.25) | |
| I-NPT (ASME B1.20.1) | |
| I-RF, i-RTJ (ASME B16.5) | |
| Uvavanyo kunye nokuhlolwa | I-API 598 |
| Okunye | NACE MR-0175, NACE MR-0103, ISO 15848 |
| Ikwafumaneka nge | I-PT, UT, RT,MT. |
✧ Inkonzo Emva Kokuthengisa
Njengomenzi weevalvu zentsimbi ezibunjiweyo kunye nomthengisi ngaphandle, sithembisa ukubonelela abathengi ngenkonzo esemgangathweni emva kokuthengisa, kuquka oku kulandelayo:
1.Nika isikhokelo sokusetyenziswa kwemveliso kunye neengcebiso zokugcinwa kwayo.
2. Ngeengxaki zomgangatho wemveliso, sithembisa ukubonelela ngenkxaso yobugcisa kunye nokusombulula iingxaki ngexesha elifutshane kangangoko.
3. Ngaphandle komonakalo obangelwe kukusetyenziswa okuqhelekileyo, sinikezela ngeenkonzo zokulungisa nokutshintsha zasimahla.
4.Sithembisa ukuphendula ngokukhawuleza kwiimfuno zenkonzo yabathengi ngeli xesha lewaranti yemveliso.
5. Sinikezela ngenkxaso yobugcisa yexesha elide, iinkonzo zokubonisana kwi-intanethi kunye noqeqesho. Injongo yethu kukubonelela abathengi ngamava enkonzo angcono kwaye senze amava abathengi abe mnandi kwaye abe lula.
