Snkuzi naTịgba ọsọProperties nkePokwaEjector dabere naDobeleVenturiEmmetụta

The venturi ejector nwere ike ịmepụta oghere oghere iji bufee irighiri ihe n'ihi mmetụta venturi. Arụ ọrụ ụgbọ njem nke ejectors ntụ ntụ dabere na mmetụta otu na nke abụọ-venturi na mmetụta nke ọnọdụ nozzle na arụmọrụ ụgbọ njem ka a na-enyocha ya site na usoro nnwale na simulation ọnụọgụ dabere na usoro njikọ CFD-DEM. Nsonaazụ ugbu a na-egosiifufe ọsọnke urughuru mbata na-abawanye ruru ka okpukpu abụọ-venturi mmetụta, nke bara uru maka ahụ n'imeinjector; ike ịnya ụgbọ ala na-eme n'ahụ site na mmiri mmiri na-abawanye, nke pụtara na enwere ike ibuga ụmụ irighiri ihe n'ebe dị anya; na nso nozzle bụ mbupụ, ka ukwuuifufe ọsọnke urughuru ntinye bụ na ukwuu nke suction ike na-arụ na ahụ bụ; ka nozulu dị nso na mbupụ, ka ọnụ ọgụgụ ntinye nke ụmụ irighiri ihe dị na ya na-ebelatainjectorbụ; Otú ọ dị, enwere ike igbochi irighiri ihe n'ime tube venturi ma ọ bụrụ na nozzle dị nso na mbupụ. Na mgbakwunye, iji belata ntinye urughuru, ewepụtara ihe ngwọta kachasị mma ebe a, ya bụ, ọnọdụ nozzle pụọ na mbupụ,y∗ = 30 mm.

Okwu mmalite

Teknụzụ na-ebufe pneumatic nwere ọtụtụ uru, dị ka okirikiri nhọrọ ukwuu, enweghị mmetọ uzuzu, ọnụ ahịa ọrụ dị ala yana mmezi dị mfe. Ya mere, a na-eji teknụzụ na-ebufe pneumatic eme ihe n'ọtụtụ ebe na mmanụ ala, kemịkalụ, metallurgical, ọgwụ, nri na ụlọ ọrụ nhazi ịnweta. Venturi ntụ ntụ ejector bụ gas siri ike nke dabeere na mmetụta venturi. Emere ụfọdụ nyocha nnwale na ọnụọgụ ọnụọgụ na injector venturi n'ime afọ iri gara aga iji ghọta njirimara njem ya.

Onye nyochaduziri nnwale na ọnụọgụ ọnụọgụ nke tube jet dabere na venturi ma nyochaa mmekọrịta dị n'etiti paramita dị iche iche na ụzọ nnwale na ọnụọgụ.Onye nyocha mere usoro nyocha nke nyocha maka ma otu gas na ngwakọta gas-coal na-agafe na venturi, ma gosi na mbelata dị nkọ na nrụgide static na oke ntinye volumetric ka a hụrụ n'ime venturi.Onye nyochamere nnyocha mgbakọ na mwepụ na omume eruba maka gas siri ike injector site Eulerian obibia, na-egosi na oge nkezi axial urughuru ngwa ngwa na-abawanye na mbụ wee na-ebelata.Onye nyochanyochara omume nke venturi gas siri ike nke akụkụ abụọ jiri usoro nnwale na ọnụọgụgụ.Onye nyochajiri usoro ihe pụrụ iche (DEM) mụọ ihe injector siri ike nke gas, wee chọpụta na ihe ndị ahụ siri ike na-agbakọta nke ọma n'akụkụ ala nke mpaghara aka ekpe nke injector n'ihi ike ndọda na ikuku gas.

Ihe ọmụmụ ndị a dị n'elu lekwasịrị anya na ejector nwere otu usoro venturi, ya bụ, mmetụta otu-venturi ka ekwuru na ejector. N'ebe a na-ahụ maka ikuku gas, a na-eji ngwaọrụ ahụ dabere na mmetụta abụọ na-eme ka ọ dịkwuo elu dị iche iche nrụgide na iji melite nha nha. Otú ọ dị, a naghị etinye ejector nwere mmetụta abụọ-venturi na-ebufe ihe. Ihe nyocha ebe a bụ venturi powder ejector dabere na mmetụta abụọ-venturi. The ejector mejupụtara a nozulu na a dum venturi tube. Ma nke nozzle na venturi tube nwere ike ịmepụta mmetụta venturi, ọ pụtara na mmetụta abụọ-venturi dị na ejector. Igwe ikuku nke nwere nnukwu ụgbọ elu na-agba ọsọ site na nozzle nke venturi ejector, nke na-emepụta oghere oghere n'ihi mmetụta nke venturi na ihe ndị na-eme ihe ike na-abanye n'ime ụlọ ahụ n'okpuru mmetụta nke ike ndọda na entrainment. Mgbe ahụ, ụmụ irighiri ihe na-eji ikuku na-ebugharị.

Usoro njikọ njikọta nke Fluid Dynamics-Discrete Element Method (CFD-DEM) ejirila nke ọma rụọ ọrụ na sistemu ikuku siri ike siri ike.Onye nyochanakweere usoro CFD-DEM iji ṅomie gas-particle ụzọ abụọ na-erugharị, a na-emeso usoro gas ahụ dị ka ihe na-aga n'ihu ma mee ya na ihe mgbagwoju anya (CFD), mmegharị ahụ na nkukota na koodu DEM.Onye nyochanakweere usoro CFD-DEM iji mee ka ikuku siri ike na-asọpụta, a na-arụ DEM ka ọ na-eṅomi akụkụ ahụ nke granular ma jiri CFD oge gboo mee ka mmiri na-asọ.Onye nyochaewepụtara simulations CFD-DEM nke akwa mmiri siri ike nke gas ma tụpụta ụdị ịdọrọ ọhụrụ.Onye nyochamepụtara usoro ọhụrụ maka nkwado nke ịme anwansị nke akwa mmiri siri ike nke gas site na CFD-DEM.Onye nyochaetinyere usoro CFD-DEM jikọtara ọnụ iji mee ka njirimara ikuku siri ike nke gas dị n'ime mgbasa ozi fibrous iji mụọ mmetụta nke nhazi eriri na njirimara urughuru na ntinye ihe na agglomeration na usoro nzacha.

N'ime akwụkwọ a, a na-enyocha ihe ndị na-ebufe ihe ndị ejectors ntụ ntụ na-adabere na mmetụta nke otu-na abụọ-venturi na mmetụta nke ọnọdụ nozzle na ọrụ ụgbọ njem na-enyocha ya site na usoro nnwale na simulation ọnụọgụ dabere na CFD-DEM njikọ njikọ.

Mkpebi

Arụ ọrụ njem nke ejectors dabere na mmetụta otu na nke abụọ-venturi n'otu n'otu site na usoro nnwale na simulation ọnụọgụ dabere na usoro njikọ CFD-DEM. Nsonaazụ dị ugbu a na-egosi ọsọ ikuku nke ntinye ntinye ihe na-abawanye n'ihi mmetụta abụọ-venturi, nke bara uru maka ụmụ irighiri ihe n'ime injector. Ike ịkwọ ụgbọala maka ihe ndị sitere na mmiri na-abawanye, nke bara uru maka ihe ndị a na-ebufe n'ebe dị anya.