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A hydraulic design method for high viscosity centrifugal pump impeller

A centrifugal pump impeller, hydraulic design technology, applied to the components, pumps, pump components, etc. of the pumping device used for elastic fluids, can solve the problems affecting the performance characteristics and optimization of high-viscosity centrifugal pumps

Active Publication Date: 2017-07-11
JIANGSU GUOQUAN PUMP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The impeller is the main flow-passing part of the high-viscosity centrifugal pump, which directly affects the performance characteristics of the high-viscosity centrifugal pump. The traditional hydraulic design methods of centrifugal pumps include velocity coefficient method, similar model conversion method, and flow increase method. The hydraulic model has been similarly converted and improved, and the design of the pump has not been optimized theoretically.

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  • A hydraulic design method for high viscosity centrifugal pump impeller
  • A hydraulic design method for high viscosity centrifugal pump impeller
  • A hydraulic design method for high viscosity centrifugal pump impeller

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Embodiment Construction

[0040] The specific implementation process of the inventive method will be provided below, and the design is applicable to liquid viscosity and is that the centrifugal pump impeller step of 40mPa s is as follows:

[0041] The diameter of the impeller outlet is determined by formulas (1), (2) and (3) according to the required head H, flow Q, and speed n of the high-viscosity centrifugal pump:

[0042]

[0043]

[0044] D. 21 = 1.5·D 2 (3)

[0045] The impeller inlet diameter is determined by the formula (4) according to the corresponding specific speed and the outlet diameter calculated in step 1:

[0046] D. 1 =0.04087n s 0.5353 D. 21 (4)

[0047] The width of the outlet edge of the impeller blade is determined by the formula (5):

[0048]

[0049] The impeller blade wrap angle is based on the inlet and outlet diameter D 1 、D 2 and specific speed, determined by formula (6):

[0050]

[0051] There is a certain relationship between the number of impelle...

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Abstract

The invention relates to a hydraulic design method of a high-viscosity centrifugal pump impeller. The present invention considers the physical characteristics of the high-viscosity fluid, appropriately increases the flow area of ​​the flow channel, adopts the velocity coefficient method and integrates the theoretical knowledge of fluid mechanics and the design characteristics of excellent hydraulic models in the past to carry out the hydraulic design of the impeller of the high-viscosity centrifugal pump. It has high efficiency and good non-blocking performance. The invention provides a hydraulic design method for the impeller of a high-viscosity centrifugal pump. The main design parameters mainly include: 1. The diameter of the impeller inlet D 1 , 2. The diameter of the impeller hub d h , 3. Blade inlet placement angle β 1 , 4. Blade outlet placement angle β 2 , 5. Impeller outlet diameter D 2 , 6. Blade outlet width b 2 , 7. The number of blades z, 8. Blade wrapping angle φ and so on. Its advantages are: stable work, high efficiency, good non-blocking performance, and wider application range.

Description

technical field [0001] The invention relates to a hydraulic design method of a high-viscosity centrifugal pump, which is mainly used in industries to transport high-viscosity liquids, and can also be used in industries such as electric power, metallurgy, and coal to transport slurry containing solid particles, and ensure its high efficiency and Good non-blocking performance. Background technique [0002] High-viscosity pumps are mainly used for the transportation of high-viscosity liquids in industrial production. The domestic demand is huge, and industrial high-viscosity pumps mostly adopt the structural design of gear pumps and screw pumps. This kind of high-viscosity pump has low efficiency, small flow, large pulsation, and loud noise. and other shortcomings. The invention of the high-viscosity centrifugal pump solves the shortcomings of the traditional high-viscosity pump. It has the characteristics of large and adjustable flow, high efficiency and stable operation. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22F04D7/04
Inventor 朱荣生卢永刚
Owner JIANGSU GUOQUAN PUMP MFG CO LTD