Ukwethulwa kwezinto zokuvala ivalvu—Ivalvu ye-TWS

Iinsetjenziswa zokuvala ivalvu ziyingcenye eqakathekileko yokuvala ivalvu. Ngiziphi izinto zokuvala ivalvu? Siyazi bona izinto zokuvala indandatho yevalvu zihlukaniswe zaba ziinkoro ezimbili: zensimbi nezingasi zensimbi. Okulandelako kusingeniso esifitjhani semibandela yokusetjenziswa kwezinto ezihlukahlukeneko zokuvala, kanye nemihlobo yamavalvu asetjenziswa khulu.

1. Irabha yokwenziwa

Iimpawu ezipheleleko zerabha yokwenziwa ezifana nokujamelana namafutha, ukujamelana nokutjhisa nokujamelana nokugqwala zingcono kunalezo zerabha yemvelo. Ngokuvamileko, izinga lokutjhisa lokusetjenziswa kwerabha yokwenziwa li-t≤150°C, begodu izinga lokutjhisa lerabha yemvelo liyi-t≤60°C. Irabha isetjenziselwa ukuvala amavalvu we-globe,ivalvu yesango elihlezi ngerabha, amavalvu we-diaphragm,rubber seated butterfly valve, ri-ubber ehlezi i-swing check valve (amavalvu wokuhlola), amavalvu wokunciphisa namanye amavalvu anomfutho omncani we-PN≤1MPa.

2. Inayiloni

I-nylon ineempawu zokukhukhumala okuncani nokujamelana nokugqwala okuhle. Inayiloni isetjenziselwa khulu amavalvu webholo kanye namavalvu we-globe anezinga lokutjhisa t≤90°C kanye nomfutho omncani we-PN≤32MPa.

3. PTFE

I-PTFE isetjenziselwa khulu amavalvu we-globe,amavalvu wesango, amavalvu webhola, njll. ngezinga lokutjhisa t≤232°C kanye nomfutho ophasi PN≤6.4MPa.

4. Insimbi

I-cast iron isetjenziselwaivalvu yesango, i-globe valve, i-plug valve, njll. malungana namazinga womtjhiso t≤100℃, umfutho we-PN≤1.6MPa, igesi namafutha.

5. I-Babbitt alloy

I-Babbitt alloy isetjenziselwa i-ammonia globe valve enezinga lokutjhisa t-70 ~ 150°C kanye nomtjhini omncani we-PN≤2.5MPa.

6. I-aloyi yekhopha

Iinsetjenziswa ezijayelekileko ze-copper alloys yi-6-6-3 tin bronze kanye ne-58-2-2 manganese brass. I-alloy yekhopha inokujamelana nokuguga okuhle begodu ilungele amanzi nomtjhiso ngezinga lokutjhisa t≤200°C kanye nomfutho omncani we-PN≤1.6MPa. Ivamise ukusetjenziswaamavalvu wesango, amavalvu we-globe,amavalvu wokuhlola, amavalvu wepulagi, njll.

7. Insimbi engagqwali ye-Chrome

Amagreyidi we-chromium stainless steel asetjenziswa khulu yi-2Cr13 kanye ne-3Cr13, ezicimileko begodu zitjhugululwe, begodu zinokujamelana nokugqwala okuhle. Ivamise ukusetjenziswa emavalvini wemidiya efana namanzi, umtjhiso kanye nephethroliyamu enamazinga womtjhiso t≤450°C kanye nomfutho we-PN≤32MPa.

8. I-Chromium-nickel-titanium insimbi engagqwali

Izinga elisetjenziswa khulu le-chromium-nickel-titanium stainless steel yi-1Cr18Ni9ti, enokujamelana nokugqwala okuhle, ukujamelana nokuguguleka nokujamelana nokutjhisa. Ilungele umtjhiso, i-nitric acid neminye imidiya enamazinga womtjhiso t≤600°C kanye nomfutho omncani we-PN≤6.4MPa, esetjenziselwa i-globe valve, i-ball valve, njll.

9. Insimbi ene-nitride

Igreyidi esetjenziswa khulu yensimbi ene-nitride yi-38CrMoAlA, enokujamelana nokugqwala okuhle nokujamelana nokuklwebheka ngemva kokwelatjhwa nge-carburizing. Isetjenziswa ngokuvamileko esiteshini samandla segeyidi enamazinga womtjhiso t≤540°C kanye nomfutho omncani PN≤10MPa.

10. Ukwenza i-boroni

I-boronizing isebenza ngqo indawo yokuvala ukusuka entweni yomzimba wevalvu nofana umzimba wediski, bese yenza ukwelatjhwa kwendawo yokuvala, indawo yokuvala inokujamelana nokuguga okuhle. Isetjenziswa esitetjhini samandla.