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A high head high specific speed mixed flow pump

A high specific speed, mixed-flow pump technology, applied in the components, pumps, pump components of pumping devices for elastic fluids, etc., can solve problems such as increased cost, high manufacturing process, and insufficiency, and achieves improved work efficiency, vibration and vibration. and the effect of low noise and reduced hydraulic loss

Active Publication Date: 2019-03-01
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent application 201611078143.X discloses "a high-power submersible mixed-flow pump impeller structure". The device includes a cylindrical base on which six evenly distributed first centrifugal impellers are arranged. The second centrifugal impeller, by setting two sets of centrifugal impellers, greatly improves the efficiency of the mixed-flow pump and solves the technical problem of low transmission efficiency of the traditional centrifugal impellers, but setting two sets of centrifugal impellers makes the manufacturing process more demanding. The cost of
[0005] In summary, for the development of mixed-flow pumps, the existing hydraulic design methods still have obvious deficiencies

Method used

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  • A high head high specific speed mixed flow pump
  • A high head high specific speed mixed flow pump
  • A high head high specific speed mixed flow pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1. The outlet size of the elbow-shaped water inlet channel 1 is equal to the inlet size of the impeller chamber 7, and the corresponding cross-sections are all circular with a diameter of 1680mm, and the height of the impeller chamber 4 is 1450mm; the outlet size of the impeller chamber 7 is the same as that of the guide vane chamber The inlet size of 8 is the same, and the diameter is 2410mm; the height of guide vane chamber 8 is 2400mm; the distance between guide vane 3 and the outlet end of blade 2 is 668mm; The corresponding sections are all circular, with a diameter of 2410mm; the maximum thickness of the blade 2 is 32mm, the minimum thickness of the blade 2 is 12mm, the number of the blade 2 is 3 pieces, and the placement angle of the blade 2 is 38°.

Embodiment 2

[0066] Example 2. The outlet size of the elbow-shaped water inlet channel 1 is equal to the inlet size of the impeller chamber 7, and the corresponding cross-sections are all circular with a diameter of 1680mm, and the height of the impeller chamber 4 is 1450mm; the outlet size of the impeller chamber 7 is the same as that of the guide vane chamber The inlet size of 8 is the same, and the diameter is 2410mm; the height of guide vane chamber 8 is 2400mm; the distance between guide vane 3 and the outlet end of blade 2 is 668mm; The corresponding sections are all circular, with a diameter of 2410mm; the maximum thickness of the blade 2 is 32mm, the minimum thickness of the blade 2 is 12mm, the number of the blade 2 is 4 pieces, and the placement angle of the blade 2 is 38°.

Embodiment 3

[0067] Example 3. The outlet size of the elbow-shaped water inlet channel 1 is equal to the inlet size of the impeller chamber 7, and the corresponding cross-sections are all circular with a diameter of 1680mm, and the height of the impeller chamber 4 is 1450mm; the outlet size of the impeller chamber 7 is the same as that of the guide vane chamber The inlet size of 8 is the same, and the diameter is 2410mm; the height of guide vane chamber 8 is 2400mm; the distance between guide vane 3 and the outlet end of blade 2 is 668mm; The corresponding sections are all circular, with a diameter of 2410mm; the maximum thickness of the blade 2 is 32mm, the minimum thickness of the blade 2 is 12mm, the number of blades 2 is 5, and the placement angle of the blade 2 is 38°.

[0068] The implementation process of the present invention is as follows: the motor 11 is arranged directly above the mixed-flow pump of the present invention, and the motor 11 is connected with the impeller 5 through...

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Abstract

The invention relates to a high-lift and high-specific-speed mixed flow pump. The mixed flow pump comprises an elbow-shaped water inlet flow channel, an impeller, guiding blades, a water outlet bent pipe and a water outlet flow channel, and is characterized in that the impeller comprises blades, a hub and a water guiding cone, the asymmetric wing-shaped blades are uniformly arranged on the hub in a circumferential direction, and the water guiding cone is arranged at the front end of the hub; and the blades are in shapes being thick in the middle and thin on the two sides, and are provided with three-dimensional twisted curved surfaces. According to the mixed flow pump, the operation efficiency of the mixed flow pump can be effectively improved, and the mixed flow pump is suitable for a high-lift pump station.

Description

technical field [0001] The invention belongs to the technical field of fluid machinery and engineering equipment, in particular to a high-lift high-specific-speed mixed-flow pump used in high-lift pumping stations. Background technique [0002] A water pump is an extremely versatile machine that can be used to transport various fluids. The water pump mainly transmits the energy of the motor to the water by increasing the water pressure, and finally achieves the purpose of lifting and transporting water. The function of the water pump is to transfer the energy of the power machine to the water, so as to achieve the purpose of lifting water and increasing water pressure. The vane type water pump is mainly used in high specific speed water pumps, the main part is the impeller and the vane body. The impeller is the most critical part of the water pump, which determines the performance of the pump body. The fluid passes through the high-speed rotation of the impeller to comple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22F04D29/24F04D29/66F04D13/06
CPCF04D13/06F04D29/22F04D29/242F04D29/666
Inventor 张玉全蒋文青郑源孙奥冉高瑾瑾高成昊张付林
Owner HOHAI UNIV