Mpɛn pii no, ntontom valve ahorow no nkwa nna tenten yɛ ahe?

Ɔsom nkwa nna anwansena valve ahorownneɛma pii a ɛka bom na ɛka no, na mpɛn pii no ɛsakrasakra wɔ mfe 5 kosi 20 mu. 

Ɛsɛ sɛ wogyina nneɛma a wɔde yɛ adwuma, adwumayɛ tebea, mpɛn dodow a wɔde yɛ adwuma, ne sɛnea wosiesie no so bu atɛn pɔtee. Nsonsonoe a ɛwɔ core nkwa nna mu no fi nsonsonoe a ɛwɔ nhyehyɛe mu wɔ nsɔano nhyehyɛe mu: ntontom valve a wɔatoto mu a ɛyɛ mmerɛw no de wɔn ho to nneɛma a ɛyɛ den te sɛ rɔba anaa polytetrafluoroethylene so na ama wɔanya nsɔano. Ɛwom sɛ saa nneɛma yi yɛ adwuma yiye wɔ nsɔano mu de, nanso ɛyɛ mmerɛw sɛ ɛwea na ɛbɔ akwakoraa bere a wɔde nhyɛso a emu yɛ den, ɔhyew sesa, na ɛtaa bue na ɛto mu, na ɛma nsɔano no ani sɛe anaasɛ ɛpaapae. Sɛ nhwɛso no, wɔ ɔhyew a ɛfata ne nsu a ɛho tew tebea mu no, wobetumi abue ntontom valve a wɔatoto mu a ɛyɛ mmerɛw no na wɔato mu bɛboro mpɛn 50000, na ɛtra hɔ bɛyɛ mfe 5 kosi 8; Sɛ wɔde di dwuma wɔ conveying system a granular media wom mu a, particle erosion bɛma sealing surface no asɛe ntɛmntɛm, na wobetumi atew service nkwa nna so akodu mfe 3 kosi 5. Nwansena valve a wɔatoto mu denneennen no gye dade to dade a wɔde hyɛ mu (te sɛ dade a ɛnyɛ den, chromium molybdenum dade), na ne nsɛe a ɛko tia no tu mpɔn denam welding a ɛyɛ den a wɔde afra anaasɛ wɔde petepete ade a ɛmma ɛnsɛe so. Ne abiɛsa eccentric nhyehyɛe no nya frictionless bue ne closing nhyehyɛe denam abiɛsa-afã offset of axis, cone soro ne contact point, kɛse tew wear rate. Wɔ nsuo a ɛyɛ hyew ne nhyɛsoɔ kɛseɛ mu no, berɛ a wɔde bue na wɔto mu wɔ ntontom valve a wɔatoto mu denneennen no tumi boro mpɛn 100000, na wɔn nkwa nna tumi du mfeɛ 10 kɔsi 20; Sɛ aduru no yɛ nnuru a ɛyɛ hyew kɛse a, ɛsɛ sɛ wɔde nneɛma a ɛtumi nsɛe te sɛ Hastelloy di dwuma. Ɛwom sɛ ebia nkwa nna no bɛtew kakra esiane nneɛma ho ka a anohyeto wom nti de, nanso ɛda so ara tumi yɛ adwuma denneennen mfe 8 kosi 15.

Adwumayɛ tebea yɛ ade titiriw foforo a ɛkyerɛ nkwa nna a...nwansena valve ahorow. Wɔ nsɛm ho amanneɛbɔ a ɛho tew, mmeae a ɛnyɛ den, ne adwumayɛ tebea horow a ɛnyɛ den mu no, wɔde ahoɔden a ɛyɛ pɛ na ɛhyɛ valve afã horow no ase, a ɛho ntew a ɛba fam na mpɛn pii no nkwa nna bɛn anohyeto a ɛwɔ soro a wɔkyerɛ sɛ ɛwɔ hɔ no. Sɛ nhwɛso no, wɔ nkurow akɛse mu nsu nhyehyɛe mu no, wobetumi abue ntontom valve ahorow a wɔatoto mu a ɛyɛ mmerɛw na wɔato mu a ennu mpɛn 5 da biara, na sɛ wosiesie no yiye a, wɔn nkwa nna betumi adu mfe 8 kosi 10. Nea ɛne eyi bɔ abira no, wɔ adwumayɛ tebea horow a emu yɛ den te sɛ dade ne nnuruyɛ mu no, ɔhyew a ɛkɔ soro (bɛboro 400 °C), nhyɛso a ɛkɔ soro (boro 10MPa), nsɛe a ano yɛ den (te sɛ acid-base solutions), anaasɛ nea ɛho asɛe kɛse (te sɛ slurry ne ash) media betumi ama nneɛma no anyin ntɛmntɛm na asɛe ne nhyehyɛe. Sɛ nhwɛso no, wɔ fononoo a ɛyɛ hyew mu mframa afiri a ɛwɔ dade adwumayɛbea bi mu no, ɛsɛ sɛ ntontom valve a wɔatoto mu denneennen no gyina ɔhyew a ɛkɔ soro a ɛyɛ 800 °C ne mframa a mfutuma wom a wɔhoro no ano. Sɛ wɔde dɔte a wɔde kata so ho ban mpo a, wobetumi akura ne nkwa nna mu mfe 5 kosi 8 pɛ.

Wontumi mmu ani ngu nkɛntɛnso a oprehyɛn su ne sɛnea wosiesie no nya wɔ nkwa nna so no so. Sɛ wɔtaa bue na wɔto mu (bɛboro mpɛn 10 da biara) a, ebetumi ama nneɛma a wɔde fa nsu mu te sɛ valve ntini ne bearing ahorow no asɛe ayɛ kɛse, na ama torque a ɛbue ne nea ɛto mu no akɔ soro na mpo ayɛ jamming; Sɛ wɔanhwɛ so sɛnea wɔakyerɛ no (te sɛ wɔmfa srade nhyɛ mu daa anaasɛ wɔmfa nsiesie efĩ a ɛwɔ nsɔano no ani) a, ɛbɛma nsɔano no anyin ntɛmntɛm na ama valve no nkwa nna nyinaa ayɛ tiaa. Sɛ nhwɛso no, wɔ nnuruyɛbea bi no, sɛ wɔantumi ansesa valve seat sealing ring no daa a, ɛmaa valve no mu nsu fii mu kɛse bere a wɔde mfe 3 ayɛ adwuma akyi, bere a valve a wɔhwɛ so sɛnea mmara kyerɛ wɔ adwumayɛ tebea koro no ara mu no betumi adi mfe 12. Enti, paw a ntease wom, adwumayɛ a wɔahyɛ da ayɛ, ne nsiesie daa ne akwan titiriw a wɔfa so trɛw ɔsom nkwa nna munwansena valve ahorow.