CN2784587Y - Impeller of centrifugal, mixed-flow type pump and compressor - Google Patents

Impeller of centrifugal, mixed-flow type pump and compressor Download PDF

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Publication number
CN2784587Y
CN2784587Y CN 200520071066 CN200520071066U CN2784587Y CN 2784587 Y CN2784587 Y CN 2784587Y CN 200520071066 CN200520071066 CN 200520071066 CN 200520071066 U CN200520071066 U CN 200520071066U CN 2784587 Y CN2784587 Y CN 2784587Y
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CN
China
Prior art keywords
impeller
blade
mixed
centrifugal
flow
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Expired - Fee Related
Application number
CN 200520071066
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Chinese (zh)
Inventor
张兴林
齐兴珮
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Individual
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Individual
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Priority to CN 200520071066 priority Critical patent/CN2784587Y/en
Priority to PCT/CN2006/000675 priority patent/WO2006111072A1/en
Application granted granted Critical
Publication of CN2784587Y publication Critical patent/CN2784587Y/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
    • F01D5/043—Blade-carrying members, e.g. rotors for radial-flow machines or engines of the axial inlet- radial outlet, or vice versa, type
    • F01D5/048—Form or construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/70—Shape

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The utility model relates to a novel impeller of a centrifugal and mixed-flow type working machine. The problem to be solved is to enhance the efficiency and the pump lift coefficient of the impeller and lower the power consumption. The utility model is characterized in that from the middle part of an impeller blade to the exit edge of the impeller blade, the mounting angle of the back side of the impeller blade is larger than the mounting angle of a working face, and the difference of the two angles is 2 DEG to 18 DEG. In the utility model, the energy transformation degree of the region near the back side of the impeller blade, which occupies a major quota in a total flow is enhanced, and the loss of whirlpool around the impeller is obviously decreased. Consequently, the total flow efficiency is increased by about 3% to 8%, and the pump lift coefficient is increased by about 8% to 30%. Simultaneously, the pulsation of the running impeller is decreased and the operational reliability is raised. The outer diameter of the impeller and the volume of a pump are decreased, and material is saved.

Description

Novel centrifugal type, mixed-flow working machine impeller
Technical field
The utility model relates to a kind of impeller, the impeller of specifically centrifugal, mixed-flow working machine.
Background technique
Pump, compressor are not only application universal machine extremely widely, and are key equipments, even are called as " industry heart ".The power consumption of pump, compressor accounts for 1/3rd of national total power consumption.Kinds such as that pump, compressor all can be divided into is centrifugal, mixed-flow, axial flow and positive displacement.The wherein centrifugal ratio maximum that accounts for, for example centrifugal pump accounts for 80% of all pumps.
Impeller is a heart centrifugal and mixed-flow pump, compressor, and blade is the core technology place of impeller.But the impeller internal flow is not entirely people so far as yet and grasps, and the design of blade still is on semiempirical, the semi-theoretical basis, has defective, and promptly efficient, lift have much room for improvement, and energy consumption remains to be reduced.
Summary of the invention
The purpose of this utility model is: a kind of novel centrifugal type, mixed-flow working machine impeller are provided.
The technical solution that realizes the foregoing invention purpose is as follows:
Novel centrifugal type, mixed-flow working machine impeller comprise wheel cap, blade and wheel disc, it is characterized in that: to the exit edge of blade, the vacuum side of blade laying angle is greater than the working surface laying angle from the blade middle part, and two jiaos difference is 2 degree-18 degree.
According to above-mentioned novel centrifugal type, mixed-flow working machine impeller, it is characterized in that: described working machine is centrifugal pump, is mixed-flow pump, is centrifugal compressor, is mix-flow compressor.
The front side of vane laying angle is the angle of blade working surface tangent line and circumferencial direction, and the vacuum side of blade laying angle is the angle of vacuum side of blade surface tangent line and circumferencial direction, and exit edge of blade is the edge at impeller outer diameter place.
Known Blade Design is just designed front side of vane molded lines or bone line, again according to manufacturing process, intensity etc., given vane thickness.There is not this notion of vacuum side of blade laying angle at all.Front side of vane laying angle and back side laying angle are almost equal on whole molded lines in fact.But, by research, find that the vacuum side of blade laying angle is more more remarkable than working surface laying angle to the influence of efficient and head coefficient to the importances such as transformation of energy degree of impeller internal flow and blade and medium, be of paramount importance design considerations.So because of the working surface and the back side are referred to as two interareas.
One of important feature in the impeller is: the speed of related movement size of medium increases progressively from the working surface to the back side.The Changing Pattern of decision axis plane velocity also increases progressively from the working surface to the back side like this.So near the flow-rate ratio working surface the back side is big, and the peripheral compoent of velocity of reflection head coefficient increases progressively from the back side to the working surface gradually.Obviously, the laying angle of vacuum side of blade is bigger than working surface to the influence of the efficient of impeller and head coefficient.
Design of the present utility model makes and accounts for total discharge and improve than the head coefficient of the vacuum side of blade near zone of great share, and the transformation of energy degree improves, and, the losses such as vortex of impeller periphery are obviously reduced, thereby, the efficient and the head coefficient of total discharge improved; Efficient improves about 3%-8%, and head coefficient improves about 8%-30%.Simultaneously, the pulsation when having reduced the impeller operation has improved reliability of operation; Impeller outer diameter reduces, and pump volume reduces, and saves material.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment 1:
This novel centrifugal type, mixed-flow working machine impeller comprise wheel cap 1, blade 2 and wheel disc 3.To the exit edge of blade, the vacuum side of blade laying angle is greater than the working surface laying angle from blade 2 middle parts, and two jiaos difference is the 2-10 degree, sees Fig. 1, Fig. 2.
The front side of vane laying angle is the angle of blade working surface tangent line and circumferencial direction, and the vacuum side of blade laying angle is the angle of vacuum side of blade surface tangent line and circumferencial direction, and exit edge of blade is the edge at impeller outer diameter place.
Described working machine is a centrifugal pump.
Embodiment 2:
To the exit edge of blade, the vacuum side of blade laying angle is greater than the working surface laying angle from blade 2 middle parts, and two jiaos difference is the 3-16 degree, and other is with embodiment 1.
Described working machine is a mixed-flow pump.
Embodiment 3:
To the exit edge of blade, the vacuum side of blade laying angle is greater than the working surface laying angle from blade 2 middle parts, and two jiaos difference is the 2-8 degree, and other is with embodiment 1.
Described working machine is a centrifugal compressor.
Embodiment 6:
To the exit edge of blade, the vacuum side of blade laying angle is greater than the working surface laying angle from blade 2 middle parts, and two jiaos difference is the 2-15 degree, and other is with embodiment 1.
Described working machine is a mix-flow compressor.

Claims (2)

1, novel centrifugal type, mixed-flow working machine impeller comprise wheel cap, blade and wheel disc, it is characterized in that: to the exit edge of blade, the vacuum side of blade laying angle is greater than the working surface laying angle from the blade middle part, and two jiaos difference is 2 degree-18 degree.
2, novel centrifugal type according to claim 1, mixed-flow working machine impeller is characterized in that: described working machine is centrifugal pump, is mixed-flow pump, is centrifugal compressor, is mix-flow compressor.
CN 200520071066 2005-04-20 2005-04-20 Impeller of centrifugal, mixed-flow type pump and compressor Expired - Fee Related CN2784587Y (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 200520071066 CN2784587Y (en) 2005-04-20 2005-04-20 Impeller of centrifugal, mixed-flow type pump and compressor
PCT/CN2006/000675 WO2006111072A1 (en) 2005-04-20 2006-04-14 Impeller of centrifugal or mixed flow working machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520071066 CN2784587Y (en) 2005-04-20 2005-04-20 Impeller of centrifugal, mixed-flow type pump and compressor

Publications (1)

Publication Number Publication Date
CN2784587Y true CN2784587Y (en) 2006-05-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520071066 Expired - Fee Related CN2784587Y (en) 2005-04-20 2005-04-20 Impeller of centrifugal, mixed-flow type pump and compressor

Country Status (2)

Country Link
CN (1) CN2784587Y (en)
WO (1) WO2006111072A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103047174A (en) * 2012-12-26 2013-04-17 合肥通用机械研究院 Design method of efficient low-cavitation overload-free centrifugal pump impeller
CN106949088A (en) * 2017-05-20 2017-07-14 江苏斯别特制泵有限公司 A kind of high-power submerged mixed-flow pump impeller of special adaptations

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102086885B (en) * 2010-04-19 2014-07-30 江苏大学 Five working condition point design method of impeller of non-overloading centrifugal pump
CN103775377B (en) * 2013-12-31 2017-03-01 江苏大学 One kind adopts deviated splitter vane Turo pump Hydraulic Design Method
CN107491567B (en) * 2016-06-12 2023-04-07 上海瑜科环境工程有限公司 Design method of impeller of wide-efficiency energy-saving centrifugal pump

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964841A (en) * 1974-09-18 1976-06-22 Sigma Lutin, Narodni Podnik Impeller blades
CN2143268Y (en) * 1993-01-16 1993-10-06 清华大学 Centrifugal pump paddle with spiral surface
CN2345758Y (en) * 1998-05-13 1999-10-27 高歌 Centrifugal pump impeller with twisted salix-leaf-type blade
DE59801139D1 (en) * 1998-12-18 2001-09-06 Lothar Reckert Fan wheel with low specific speed
US20040156717A1 (en) * 2002-12-02 2004-08-12 Volvo Lastvagnar Ab Centrifugal pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103047174A (en) * 2012-12-26 2013-04-17 合肥通用机械研究院 Design method of efficient low-cavitation overload-free centrifugal pump impeller
CN106949088A (en) * 2017-05-20 2017-07-14 江苏斯别特制泵有限公司 A kind of high-power submerged mixed-flow pump impeller of special adaptations

Also Published As

Publication number Publication date
WO2006111072A1 (en) 2006-10-26

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20060531