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Apakah pompa sentrifugal? Bagaimana cara kerjanya?

Di pompa sentrifugal, seperti semua turbomachines, ada sebuah elemen utama yang disebut impeller, berputar kecepatan sudut di sekitar sumbu tetap. Bentuk yang paling sederhana sentrifugal impeller diperoleh dengan sentral (radial) wings antaradua discs paralel. Selain itu, salah satu disk penebalan di sekitar sumbu dan menghubungkan mil. Seperti yang dinyatakan dalam gambar berikut, partikel cairan di dalam impeller berputar di sekitar sumbu rotasi dengan kecepatan U = rωwith roda, sementara di sisi lain, bergerak menurut roda dengan W-kecepatan dan daun. U mendapat nama kecepatan relatif lingkungan kecepatan, W.

 

Ketika sebuah impeller yang berisi cairan mulai berputar di sekitar sumbu, itu mulaimuncul dari permukaan cairan B di bawah pengaruh kekuatan sentrifugal. Dengan demikian, cairan diserap dari permukaan E dicetak dari B. permukaan

 

Aliran terlihat oleh pengamat yang berputar dengan roda akan berbeda dari aliranpengamat dalam lingkungan bergerak. Kecepatan partikel bergerak dalam aliran, menurut seorang pengamat stasioner dalam lingkungan bergerak, memiliki kecepatan mutlak, kecepatan relatif kecepatan yang roda melihat pada titik mana pengamatberputar dengan roda.

 

Kecepatan adalah jumlah vectorial c, W, dan Anda kecepatan. Dengan intensitas dan arah W dan Anda kecepatan, mereka membentuk tepi yang persegi panjang. Batas ini mewakili kecepatan mutlak diagonal persegi tersebut. Ujung-ujungnya persegi panjang menunjukkan kecepatan relatif w dan ambient kecepatan Anda, tergantung pada intensitas dan arah kekerasan. Dengan demikian, kecepatan tiga bentuk segitiga. Dalam perhitungan, jumlah tak terbatas sangat tipis sayap bertindak pemikiran.Dalam kasus ini, ianya dapat diterima bahwa benang aliran sepenuhnya dimonitor dan bahwa feed adalah salah satu dimensi. Dalam kasus non-dampak masukan, awalsayap adalah bersinggungan dengan kecepatan relatif masukan. Dengan lain ekspresi, tingkat W1, yang membuat sudut β1 dengan ruang asupan pompa, berada di arah yang sama seperti profil sayap. Demikian pula, kecepatan W2, yang membuat sudut β2 dengan akhir pintu keluar sayap, adalah dalam arah yang sama. Arah dari masukan tergantung pada arah elemen sayap pertama dalam entri dan orientasi kecepatan masuk ketika entri diminta untuk dilakukan tanpa distorsi dan dengan demikianmencegah kerugian. Di pompa, pisau berakhir di bawah sudut β2 kecepatan relatifW2.

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