Ukuhlukaniswa okuyinhloko kanye nezimo zesevisi zezinto zokuvala ama-valve

Ukuvalwa kwevalvu kuyingxenye ebalulekile yevalvu yonke, inhloso yayo eyinhloko ukuvimbela ukuvuza,ivalvuIsihlalo sokuvala sibizwa nangokuthi indandatho yokuvala, kuyinhlangano ethintana ngqo ne-medium epayipini futhi ivimbele i-medium ukuthi ingagelezi. Uma i-valve isetshenziswa, kunezinhlobo ezahlukene zemidiya epayipini, njengoketshezi, igesi, uwoyela, i-corrosive media, njll., futhi izivalo zama-valve ahlukene zisetshenziswa ezindaweni ezahlukene futhi zingazivumelanisa nezinhlobo ezahlukene zemidiya.

I-TWSVi-alvekukukhumbuza ukuthi izinto zokuvala ama-valve zingahlukaniswa ngezigaba ezimbili, okungukuthi izinto zensimbi nezinto ezingezona ezensimbi. Izivalo ezingezona ezensimbi zivame ukusetshenziswa emapayipini ekushiseni okuvamile kanye nengcindezi, kuyilapho izivalo zensimbi zinezinhlelo zokusebenza eziningi futhi zingasetshenziswa ekushiseni okuphezulu.

1. Irabha yokwenziwa

Irabha yokwenziwa ingcono kunerabha yemvelo maqondana nokumelana namafutha, ukumelana nokushisa kanye nokumelana nokugqwala. Ngokuvamile, izinga lokushisa lokusebenza lerabha yokwenziwa lingu-t≤150°C, irabha yemvelo i-t≤60°I-C, kanye nerabha isetshenziselwa ukuvala amavalvu embulunga, amavalvu esango, amavalvu e-diaphragm, amavalvu e-butterfly, amavalvu okuhlola, amavalvu okuncinza kanye namanye amavalvu ane-PN yokucindezela okujwayelekile.≤1MPa.

2. Inayiloni

Inayiloni inezici zokulingana okuncane kokungqubuzana kanye nokumelana okuhle nokugqwala. Inayiloni isetshenziswa kakhulu kuma-valve ebhola kanye nama-valve e-globe anezinga lokushisa elingu-t≤90°I-C kanye nengcindezi ejwayelekile ye-PN≤32MPa.

3. I-Polytetrafluoroethylene

I-PTFE isetshenziswa kakhulu kuma-valve embulunga, ama-valve esango, ama-valve ebhola, njll. anezinga lokushisa elingu-t≤232°I-C kanye ne-PN yokucindezela okujwayelekile≤6.4MPa.

4. Insimbi ephothiwe

Insimbi ephothiwe isetshenziselwa ama-valve esango, ama-valve embulunga, ama-valve epulaki, njll. ukuze kusetshenziswe izinga lokushisa≤100°C, ingcindezi ejwayelekile ye-PN≤1.6MPa, igesi kanye nowoyela.

5. Ingxubevange yeBabbitt

I-alloy ye-Babbitt isetshenziselwa i-valve ye-ammonia globe enezinga lokushisa elingu-t-70~150℃kanye nengcindezi ejwayelekile ye-PN≤2.5MPa.

6. Ingxubevange yethusi

Izinto ezivame ukusetshenziswa kuma-alloy ethusi yi-6-6-3 tin bronze kanye ne-58-2-2 manganese brass. I-Copper alloy inokumelana okuhle nokuguguleka futhi ifanelekela amanzi kanye nomusi nge-t yokushisa.≤200℃kanye nengcindezi ejwayelekile ye-PN≤I-1.6MPa. Ivame ukusetshenziswa kuma-valve esango, ama-valve e-globe, ama-valve okuhlola, ama-valve e-plug, njll.

7. Insimbi engagqwali ye-Chrome

Izinhlobo ezivame ukusetshenziswa zensimbi engagqwali ye-chromium yi-2Cr13 kanye ne-3Cr13, ezicinyiwe futhi zaqiniswa, futhi zinokumelana okuhle nokugqwala. Ivame ukusetshenziswa kuma-valve amanzi, umusi kanye ne-petroleum anezinga lokushisa elingu-t≤450℃kanye nengcindezi ejwayelekile ye-PN≤32MPa.

8. Insimbi engagqwali ye-Chrome-nickel-titanium

Uhlobo oluvame ukusetshenziswa lwensimbi engagqwali ye-chromium-nickel-titanium yi-1Cr18Ni9ti, enokumelana okuhle nokugqwala, ukumelana nokuguguleka kanye nokumelana nokushisa. Ifanele umusi kanye nezinye izinto ezisebenzisa izinga lokushisa elingu-t.≤600°I-C kanye ne-PN yokucindezela okujwayelekile≤6.4MPa, futhi isetshenziselwa ama-globe valve, ama-ball valve, njll.

9. Insimbi ekhipha i-nitriding

Izinga elivame ukusetshenziswa lensimbi ye-nitriding yi-38CrMoAlA, enokumelana okuhle nokugqwala kanye nokumelana nokuklwebheka ngemva kokwelashwa nge-carburizing. Ivame ukusetshenziswa kuma-valve esango lesiteshi sikagesi anezinga lokushisa elingu-t≤540℃kanye nengcindezi ejwayelekile ye-PN≤10MPa.

10. Ukuzinza kwe-Boronizing

I-Boronizing icubungula ngqo indawo yokuvala kusukela ezintweni zomzimba we-valve noma umzimba wediski, bese yenza ukwelashwa kwendawo yokuvala i-boronizing. Indawo yokuvala inamandla okuhle okuguga. Ye-valve yokubhoboza esiteshini samandla.

Uma i-valve isetshenziswa, izinto okufanele ziqashelwe yilezi ezilandelayo:

1. Ukusebenza kokuvala kwevalvu kufanele kuhlolwe ukuqinisekisa ukusebenza kwayo.

2. Hlola ukuthi indawo yokuvala ivalvu igugile yini, bese uyilungisa noma uyishintshe ngokwesimo.