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Brek mmiri

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Ihe osise mmiri brek na dynamometer
Ntuziaka 'otú ọ si arụ ọrụ vidiyo' nke na-akọwa etu ihe na-agbanye mmiri na brek nke injin si arụ ọrụ.

brek mmiri bụ ụdị njikọ mmiri eji eme ihe iji mịkọrọ ike igwe ma na-enwekarị turbine ma ọ bụ propeller a na-etinye n'ime oghere jupụtara na mmiri.

Ka turbine ma ọ bụ propeller na-atụgharị, a na-ebufe ike igwe na mmiri n'ihi turbulence na friction. Ihe mgbagwoju anya nke mmiri na-agba ọsọ ka ọ na-esi n'akpa uwe dị na stator gaa n'akpa ume dị na rotor na-agbagharị chọrọ ike. Ike ahụ na-eme ka mmiri na-ekpo ọkụ n'ihi mkpakọ ka mmiri na na-agafe brek mmiri. Ihe fọrọ nke nta ka ọ bụrụ ike ịnyịnya niile nke usoro na-atụgharị rotor (na-abụkarị injin ọkụ dị n'ime) na-agbanwe ka ọ bụrụ mgbanwe okpomọkụ nke mmiri. A na-ewere obere ike site na ihe ndị na-eme ka ọ dị n'ime unit ahụ. Ya mere, mmiri ga-agagharị mgbe niile site na ngwaọrụ ahụ na ọnụego kwekọrọ na ike ịnyịnya a na-amị. A ghaghị idebe okpomọkụ mmiri na-apụ na unit ahụ n'okpuru 120-160 °F (50-70 °C) iji gbochie mmepụta na cavitation. Mmiri na-abanye n'etiti ngwaọrụ ahụ ma mgbe ọ gafere n'akpa uwe dị na stator na rotor na-apụ n'èzí ụlọ ahụ site na oghere a na-achịkwa. Ọnụ ọgụgụ nke loading na-adabere na ọkwa mmiri dị n'ime ụlọ ahụ. Ụfọdụ brek mmiri na-agbanwe ibu site n'ịchịkwa ọnụ ọgụgụ mmiri na-abanye naanị ma nwee ọnụ ọgụgụ oghere dị iche iche dabere na hp achọrọ ka a ga-amị ma ụfọdụ na-achịkwa ma oghere ntinye na mmepụta n'otu oge ahụ nke na-enye ohere ịchịkwa okpomọkụ mmiri na-apụ apụ. A na-ebugharị ụlọ ahụ n'èzí iji kwe ka ikuku wepụ mmiri ka mmiri dị na unit ahụ na-arị elu ma na-ada.

[1]5 na-akọwa ọnụọgụ nke torque nke enwere ike ịmịkọrọ site na usoro T = kN2 ebe T = torque, N = RPM, D = dayameta nke rotor na k = ihe na-adịgide adịgide dabere na nha na ọdịdị na akụkụ nke akpa rotor / stator.

Usoro ndị chọrọ torque nke usoro a na-anwale iji tụọ ya na-ejikarị gauge nrụgide a na-etinye na ogwe aka torque nke a na-agbakwunye na ụlọ ahụ na-aga n'ihu na ogwe ntinye. A na-etinye ụlọ / stator na roller bearings ma na-etinye rotor na roller bearing n'ime ụlọ / stater ka o wee nwee ike ịtụgharị n'onwe ya na rotor na etiti. Ihe mgbochi ahụ na-ejikọta ogwe aka torque na mkpokọta etiti ma na-eme ka ụlọ ahụ ghara ịnyagharị ka ụlọ na-anwa ịtụgharị n'otu ụzọ nke turbine. (Iwu nke atọ nke Newton).

Ọnụ ọgụgụ nke nguzogide nwere ike ịdị iche iche site n'ịgbanwe oke mmiri n'ime ogige ahụ n'otu oge. A na-eme nke a site na valvụ mmiri ejiri aka ma ọ bụ nke eletrọnịkị na-achịkwa. Ka ọkwa mmiri dị n'ime breeki ka ọ na-ebuwanye ibu. A na-ejikarị breeki mmiri eme ihe n'ụdị dynamometer ụfọdụ mana ejiriwokwa ya n'ụgbọ okporo ígwè dị ka British Advanced Passenger Train.

Ihe owuwu hydrokinetic (mmetụta torque)

[dezie | dezie ebe o si]

Froude waterbrake dabeere na hydrokinetic construction ma ọ bụ (torque absorption).

Igwe ahụ nwere impeller (rotor) nke na-eme ka mmiri pụta ìhè site na ntụgharị ya. Mmiri ahụ nwere ọsọ ọsọ ya gbanwere site na stator nke na-eme ka mmiri ahụ laghachi na dayameta dị n'ime nke rotor. na ike. Ike a na-eme n'oge ụfọdụ n'ime rotor na stator bụ ebe dị anya site na etiti oghere, na ike nke a na-amụba site n'ebe dị anya na-emepụta torque.

  • Onye na-agbanwe ntụgharị

Edensibia

[dezie | dezie ebe o si]
  1. Rao. The Basic Theory of Hydraulic Dynamometers and Retarders. India: SAE paper 680178.