Butterfly valve nimdeɛ nkɔmmɔbɔ

Wɔ mfe 30 mu no, na...nwansena valvewɔyɛɛ no ​​wɔ United States, wɔde baa Japan wɔ 50 mfe no mu, na wɔde dii dwuma kɛse wɔ Japan wɔ 60 mfe no mu, na wɔhyɛɛ ho nkuran wɔ China wɔ 70 mfe no akyi. Mprempren, ntontom valve ahorow a ɛboro DN300 mm wɔ wiase no de nkakrankakra asi apon valve ahorow ananmu. Sɛ wɔde toto ho aapon ano valve ahorow, butterfly valves wɔ bere tiaa a wobue ne to mu, adwumayɛ torque ketewaa, beae ketewaa a wɔde besisi ne emu duru a emu yɛ hare. Sɛ yɛfa DN1000 sɛ nhwɛsoɔ a, ntontom valve no bɛyɛ 2T, na gate valve no bɛyɛ 3.5T, na butterfly valve no yɛ mmerɛw sɛ wɔde bɛka mfiri ahorow a wɔde ka kar ho, a ɛtra hɔ kyɛ yiye na wotumi de ho to so.

Mfomso a ɛwɔ rɔba nsɔano no sonwansena valvene sɛ sɛ wɔde yɛ throttling a, cavitation bɛba esiane sɛ wɔmfa nni dwuma yiye nti, na ɛno bɛma rɔba nkongua no atutu na asɛe. Wɔ nnansa yi mfe mu no, China nso ayɛ dade a wɔatoto mu ntontom valves, na nnansa yi mfe mu no, Japan nso ayɛ comb-shaped butterfly valves a cavitation resistance, low vibration ne low dede.

Nkwa nna a ɛwɔ general sealing seat no yɛ mfe 15-20 ma rɔba ne mfe 80-90 ma dade wɔ tebea horow a ɛfata mu. Nanso, sɛnea wɔbɛpaw nneɛma yiye no gyina adwumayɛ tebea horow a wɔhwehwɛ so.

Abusuabɔ a ɛda anwansena valvena nsuo a ɛsen no yɛ linear ne proportional titiriw. Sɛ wɔde di dwuma de hwɛ nsuo a ɛsen no so a, ne nsuo a ɛsen no nso ne nsuo a ɛsene a ɛwɔ nsuo afiri no mu no wɔ abusuabɔ kɛseɛ, te sɛ nsuo afiri a wɔde ahyɛ nsuo afiri mmienu no mu no ntwemu ne ne su yɛ pɛ, na nsuo afiri no mu adehwereɛ nsusuiɛ yɛ soronko, na nsuo a ɛsen fa nsuo afiri no mu no bɛyɛ soronko koraa.

Sɛ valve no wɔ tebea a ɛyɛ throttling kɛse mu a, valve mprɛte no akyi taa yɛ cavitation, na ebetumi aba sɛ ɛbɛsɛe valve no, enti wɔtaa de di dwuma wɔ 15° akyi.

Sɛ ntontom valve no wɔ mfinimfini bue no mu a, bue nsusuwii a ɛyɛvalvenipadua ne ntontom mprɛte no anim awiei wɔ mfinimfini wɔ valve shaft no so, na afã abien no yɛ tebea horow, ntontom mprɛte no anim awiei wɔ ɔfã biako no fa nsu a ɛsen no kwan so, na ɔfã foforo no kɔ so tia nsu a ɛsen no kwankyerɛ, enti, valve nipadua a ɛwɔ ɔfã biako ne valve mprɛte no yɛ nozzle-shaped opening, na ɔfã foforo no te sɛ throttle hole-shaped opening, nozzle no ɔfã no yɛ ntɛmntɛm sen throttle fã no, na nhyɛso bɔne no bɛba wɔ throttle afã valve no ase, na rɔba nsɔano no taa hwe ase.

Adwumayɛ torque a butterfly valve, esiane sɛ ɛsono bue ne bue kwankyerɛ a valve no, ne bo yɛ soronko, na horizontal butterfly valve, titiriw kɛse-diameter valve, esiane nsu no mu dɔ nti, torque a nsonsonoe a ɛda soro ne ase ti ntam valve shaft no, wontumi mmu ani ngu so. Afei nso, sɛ wɔde nsateaa bi si valve no fã a ɛkɔ mu no so a, deflection flow ba, na torque no kɔ soro. Sɛ valve no wɔ mfinimfini bue no mu a, ɛsɛ sɛ adwumayɛ afiri no ankasa to mu esiane nsu a ɛsen no torque no dwumadi nti.