Valve naatsii ji valve muu lɛ fɛɛ fã ko ni he hiaa waa, eyiŋtoo titri ji ni ekɛtsi nu ni hoɔ lɛ naa,valve lɛatsɛɔ sealing seat lɛ hu akɛ sealing ring, eji gbɛjianɔtoo ko ni kɛ tsɔne ni yɔɔ paipii lɛ mli lɛ kpaa gbee tɛ̃ɛ ni etsĩɔ tsɔne lɛ naa koni ekaho. Kɛji akɛ akɛ valve lɛ miitsu nii lɛ, nibii srɔtoi yɛ paipii lɛ mli, tamɔ nu, gas, mu, nibii ni fiteɔ nii, kɛ ekrokomɛi, ni akɛ valve srɔtoi lɛ a-seals lɛ tsuɔ nii yɛ hei srɔtoi ni ebaanyɛ ekɛ ehe awo nibii srɔtoi amli.
TWSValvekaiɔ bo akɛ abaanyɛ aja nibii ni akɛfeɔ valve lɛ mli awo kui enyɔ mli, ni ji dade nibii kɛ nibii ni jeee dade nibii. Akɛ dade ni jeee dade ni akɛwoɔ paipii amli lɛ tsuɔ nii yɛ paipii amli yɛ hulutsoo kɛ latsaa ni sa mli, yɛ be mli ni dade ni akɛwoɔ mli lɛ yɛ nitsumɔi srɔtoi babaoo ni abaanyɛ akɛtsu nii yɛ hulutsoo be ni mli wa mli. nɔnyɛɛ ni nɔ kwɔ.
Rɔba ni akɛfee lɛ hi fe adebɔɔ mli rɔba yɛ mu ni nyɛɔ eshiɔ, hulutsoo ni nyɛɔ eshiɔ kɛ ŋmeii ni nyɛɔ eshiɔ lɛ he. Yɛ gbɛ ni waaa nɔ lɛ, tsɔne ni akɛfee rɔbɔt lɛ nitsumɔ mli latsaa ji t≤150°C, adebɔɔ mli rɔba ji t≤60°C, ni akɛ rɔba tsuɔ nii kɛtswaa globo valvɛi, shinaa valvɛi, diaphragm valvɛi, ŋmei valvɛi, kwɛmɔ valvɛi, pinch valvɛi kɛ valvɛi krokomɛi ni yɔɔ nominal pressure PN .≤1MPa.
2. Nailon
Nylon yɛ sui ni ji ŋmɔlɔ bibioo kɛ ŋmɔlɔ ni hi jogbaŋŋ. Nylon ji nɔ ni akɛtsuɔ nii babaoo kɛhaa bɔɔlu valvɛ kɛ globe valvɛ ni hulutsoo t yɔɔ mli≤90°C kɛ nɔnyɛɛ ni ji PN≤32MPa.
PTFE ji nɔ ni akɛtsuɔ nii babaoo kɛha globe valves, shinaa valves, bɔɔlu valves, kɛ ekrokomɛi ni hulutsoo t .≤232°C kɛ nɔnyɛɛ ni ji PN≤6.4 MPa.
4. Dade ni akɛwo mli
Akɛ dade ni akɛwo mli lɛ tsuɔ nii kɛhaa shinaa naa tsɔnei, shikpɔŋ nɔ tsɔnei, plɔg tsɔnei, kɛ ekrokomɛi kɛha dɔlɛ t .≤100°C, nɔnyɛɛ ni ji PN≤1.6MPa, kɔɔyɔɔ kɛ mu.
5. Babbitt dade ni akɛfee nii
Akɛ Babbitt aloi tsuɔ nii kɛhaa ammonia shikpɔŋ valv ni mli edɔ t-70~150°Ckɛ nɔnyɛɛ ni ji gbɛi PN≤2.5 MPa.
6. Akɔɔble ni akɛfee ekome
Nibii ni akɛfeɔ akɔɔble ni akɛfee akɔɔble ji 6-6-3 tin akɔɔble kɛ 58-2-2 manganese akɔɔble. Akɔɔble aloi lɛ yɛ tsɔne ni hi ni ekɛteɔ shi ewoɔ tsɔne lɛ, ni ehi kɛha nu kɛ lasu ni mli edɔ t≤200°Ckɛ nɔnyɛɛ ni ji gbɛi PN≤1.6 MPa. Bei pii lɛ akɛtsuɔ nii yɛ shinaa valvɛi, globe valvɛi, kwɛmɔ valvɛi, plɔg valvɛi, kɛ ekrokomɛi amli.
7. Chrome dade ni bɛ ŋmɔlɔ
Chromium dade ni akɛtsuɔ nii ni afɔɔ nitsumɔ ji 2Cr13 kɛ 3Cr13, ni agbe amɛ ni afee amɛ la, ni amɛhe wa jogbaŋŋ ni nyɛɔ amɛshiɔ ŋmeii. Bei pii lɛ, akɛtsuɔ nii yɛ nu, lasu kɛ mu ni mli edɔ t≤450°Ckɛ nɔnyɛɛ ni ji gbɛi PN≤32MPa.
8. Krom-nikel-titanium dade ni bɛ ŋmɔlɔ
1Cr18Ni9ti, ni yɔɔ dade ni sɛɛ tsɛɔ ni ji chromium-nickel-titanium ni akɛtsuɔ nii babaoo lɛ ji dade ni hi jogbaŋŋ ni nyɛɔ eshiɔ ŋmeii, ŋmeii ni efiteɔ kɛ dɔlɛ ni nyɛɔ eshiɔ. Ehi kɛha steam kɛ adafitswaa woji krokomɛi ni hulutsoo t≤600°C kɛ nɔnyɛɛ ni ji PN≤6.4MPa, ni akɛtsuɔ nii kɛhaa globe valves, bɔɔlu valves, kɛ ekrokomɛi.
9. Dade ni akɛ nitrid woɔ mli
Nitriding dade ni afɔɔ nitsumɔ ji 38CrMoAlA, ni yɔɔ ŋmei ni hi jogbaŋŋ kɛ ŋmei ni nyɛɔ eshiɔ ŋmei yɛ carburizing helatsamɔ sɛɛ. Bei pii lɛ, akɛtsuɔ nii yɛ tsɔne ni akɛwoɔ tsɔne mli lɛ shinaa mli valves ni hulutsoo t yɔɔ mli lɛ amli≤540°Ckɛ nɔnyɛɛ ni ji gbɛi PN≤10MPa.
10. Boronfeemɔ
Boronizing tsuɔ ŋwɛi ŋta lɛ he nii tɛ̃ɛ kɛjɛɔ nibii ni yɔɔ valve gbɔmɔtso lɛ loo disc gbɔmɔtso lɛ mli lɛ mli, ni no sɛɛ lɛ etsuɔ boronizing ŋwɛi ŋta lɛ he nii. Nɔ ni akɛfiɔ naa lɛ yɛ nɔ ni hi jogbaŋŋ ni teɔ shi ewoɔ fitemɔ. Kɛha tsɔne ni haa hulu tsoɔ valve.
Kɛ́ akɛ valve lɛ miitsu nii lɛ, saji ni esa akɛ agbala jwɛŋmɔ kɛya nɔ ji nɔ ni nyiɛ sɛɛ nɛɛ:
1. Esa akɛ aka bɔ ni valve lɛ tsuɔ nii ehaa lɛ lɛ akwɛ koni ana bɔ ni etsuɔ nii ehaa.
2. Kwɛmɔ kɛji akɛ valve lɛ nɔ ni tsiɔ tsɔne lɛ naa lɛ efite, ni osaa loo okɛtsake yɛ shihilɛ lɛ naa.
Be ni akɛmajeɔ: Aharabata-04-2023
