(1) Understand and can explain the operating principle, structure and performance of the swirl pump. (Learning and Education Objective D-2)
(2) Understand the given design specifications, and can perform basic design calculations, and obtain design documents. (Learning and Education goals D-2, F-1)
(3) Understand the concrete structure of the machine being designed, and can present in a drawing with a harmonious structure and high maturity. (F-1, G-1 Learning and Education goals)
Outline:
The aim is to develop a high-quality design drawing capability by understanding the principles of operation, structure, and performance calculations of a fluid machine, and by achieving harmonized coupling of each component, targeting pumps widely used in human society. The object of the design is a single-stage spiral pump with transverse shaft pull-in. Each student will complete the assignment of design specifications consistently from the creation of the design document to the part drawing and assembly drawings.
Style:
After explaining the design theory of the swirl pump in lectures, students will design the main components. Students will use CAD to create drawings of key parts based on the design.
Notice:
This course's content will amount to 180 hours of study in total. These hours include the learning time guaranteed in classes and the standard self-study time required for pre-study / review, and completing assignment reports. The first half of the first semester will involve lectures and explanation of the basic theory of pumps. Each student is then given a design specification to begin specific design calculations and drafting. Students should produce a calculation sheet, part drawing, or assembly drawing for use as a product to market level in a defined process.
Students who miss 1/4 or more of classes will not be eligible for a passing grade.
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Theme |
Goals |
| 1st Semester |
| 1st Quarter |
| 1st |
Fluid mechanics and fluid dynamics |
Understand the various fluid machines, the basic flow equation and Bernoulli's theorem.
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| 2nd |
Pump classification, and impeller theory |
Understand and can explain the types and applications of pumps and the structure of centrifugal pumps. Also, understand and can apply Euler's equation.
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| 3rd |
Shaft thrust, and leak loss |
Understand vane exit flow and axial thrust.
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| 4th |
Pump similarity, and cavitation |
Understand the concept of similarities, cavitation issues, and the prevention methods.
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| 5th |
Pump design procedures |
Understand the steps to specifically design a swirl pump.
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| 6th |
Vane design calculation (1) |
Understand how to calculate the performance of the impeller and make calculations based on individual specifications.
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| 7th |
Vane design calculation (2) |
Same as above
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| 8th |
No midterm exam
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| 2nd Quarter |
| 9th |
Liner ring gap design and calculation
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Understand the treatment of small gaps and the leak rate of those parts, and can calculate them based on their own specifications.
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| 10th |
Axial primary (key and electric motor) design calculation |
Understand how to select keys and electric motors, and can calculate and make selections based on individual specifications.
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| 11th |
Spiral ventricle design calculation |
Understand how to design the whirlpool chamber, and calculate them based on different specifications.
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| 12th |
Front plan view primary |
Draw a plan for the area around the impeller.
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| 13th |
Design calculation for the swirl chamber lateral wall thickness, lid flange thickness, and tightening bolt. |
Understand the swirl chamber lateral wall thickness, lid flange thickness, and fastening bolts, and calculate them based on individual specifications.
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| 14th |
Design calculation (1) for axial diameter secondary (axial diameter and dangerous velocity) |
Understand the shaft diameter and the danger speed, and can calculate them based on the individual specifications.
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| 15th |
Design calculation (2) for axial diameter secondary (axial diameter and dangerous velocity) |
Same as above
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| 16th |
Final exam
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| 2nd Semester |
| 3rd Quarter |
| 1st |
Front plan view secondary |
Draw a planning drawing of the periphery of the main spindle.
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| 2nd |
Side plan view |
Draw the casing as viewed from the inlet side of the pump. Check the balance with the overall view.
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| 3rd |
Front plan view tertiary |
Complete the overall plan. Check the balance between bearing size and large shaft length. Determine the other dimensions.
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| 4th |
Detailed drawing of the swirl chamber (1) |
Draw the circumference curve of the swirl chamber to create a smooth circular curve.
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| 5th |
Detailed drawing of the swirl chamber (2) |
Same as above
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| 6th |
Detailed drawing of the bearing block (1) |
Determine the table on the pump side after placing it on the table at the electric motor side. Leaks from the ground packing should be drainable.
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| 7th |
Detailed drawing of the bearing block (2) |
Same as above
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| 8th |
No midterm exam
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| 4th Quarter |
| 9th |
Design calculation document (1) |
Calculate the dimensions of each part of the pump according to the design instructions, and summarize the main values in a table.
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| 10th |
Design Calculation (2) |
Same as above
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| 11th |
Detailed drawing of the impeller (1) |
Show the vane curve on the vane diagram and make sure that the diffuser is between the two vanes.
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| 12th |
Detailed drawing of the impeller (2) |
Same as above
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| 13th |
Complete assembly section view (1) |
Modify the plan and draw the final drawing. The shaft fittings should be JIS-standard.
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| 14th |
Complete assembly section view drawing (2) |
Same as above
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| 15th |
Complete assembly section view drawing (3) |
Same as above
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| 16th |
No final exam
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