CN2786330Y - Impeller of axial flow type pump and compressor - Google Patents

Impeller of axial flow type pump and compressor Download PDF

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Publication number
CN2786330Y
CN2786330Y CN 200520071067 CN200520071067U CN2786330Y CN 2786330 Y CN2786330 Y CN 2786330Y CN 200520071067 CN200520071067 CN 200520071067 CN 200520071067 U CN200520071067 U CN 200520071067U CN 2786330 Y CN2786330 Y CN 2786330Y
Authority
CN
China
Prior art keywords
axial flow
compressor
pump
axial
impeller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200520071067
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Chinese (zh)
Inventor
张兴林
齐兴珮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 200520071067 priority Critical patent/CN2786330Y/en
Priority to PCT/CN2006/000676 priority patent/WO2006111073A1/en
Application granted granted Critical
Publication of CN2786330Y publication Critical patent/CN2786330Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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 an impeller for an axial flow pump and an axial flow type compressor. The problem to be solved is to eliminate the instable operational area in the flow rate head curve of the axial flow pump and the axial flow type compressor. The utility model is characterized in that the working face of an impeller blade is an outwards protruding cambered surface, and the back side of the impeller blade is the corresponding concave cambered surface. The utility model eliminates the saddle shape in the flow rate head curve of the axial flow pump and the gradual speed loss and the sudden speed loss in the flow rate head curve of the axial flow type compressor, and thus, the former instable operational area operates stably as a centrifugal pump and a centrifugal compressor. The operational reliability of the axial flow pump and the axial flow type compressor is enhanced.

Description

Novel axial flow working machine impeller
Technical field
The utility model relates to axial-flow pump.
Background technique
Axial-flow pump, Axial Flow Compressor are widely used universal machines.The design of its impeller all is to use wing theory for a long time.Pump, compressor belong to working machine, and wing is similar to water turbine, belong to prime mover.
Use wing theory when design, do not consider the difference of working machine and prime mover essence, directly use impeller blade that wing theory designs and be concave surface along sense of rotation, promptly working surface is a concave surface; There is the basic reason place of peculiar defective in the flow lift curve of Here it is axial-flow pump and axial flow compressor.The flow lift curve of axial-flow pump is the shape of a saddle, and is extremely unstable at quite wide range of flow area operation; Axial Flow Compressor flow lift curve shows as progressive stall, sudden change stall.If operation is very harmful to machine in this scope.
Summary of the invention
The purpose of this utility model is: irregular operation district in a kind of flow lift curve of eliminating axial-flow pump, Axial Flow Compressor is provided, makes it good operation stability, the safer novel axial flow working machine impeller of operation.
The technical solution that realizes the foregoing invention purpose is as follows:
Novel axial flow working machine impeller comprises blade and wheel hub, it is characterized in that: the outer convex globoidal of the working surface of described blade for outwards protruding, the back side of blade is corresponding concave arc surface.
According to above-mentioned novel axial flow working machine impeller, it is characterized in that: described working machine is an axial-flow pump, is Axial Flow Compressor.
By Hydrodynamics Theory as can be known, fluid certainly exists the boundary layer when solid flow.One of boundary layer flow important phenomenon is a segregation phenomenon, and the vortex of its generation, resistance etc. are unfavorable to machine run.Therefore, prevent that boundary layer separation is very important.
The separation in boundary layer not only with stream object, relevant as the shape of wing, blade, but also with incoming flow with to stream the opposite direction of thing relevant.
Protruding, the concave arc surface at the front side of vane that the utility model is designed, the back side just in time blade with existing axial-flow pump, Axial Flow Compressor is opposite, and is just in time identical with the blade of the centrifugal pump that operates steadily, centrifugal compressor.Like this, irregular operation is distinguished from alleviating greatly, therefore, eliminates the shape of a saddle in the axial-flow pump flow lift curve, progressive stall in the flow lift curve of elimination Axial Flow Compressor, sudden change stall make former irregular operation district operate steadily as centrifugal pump, centrifugal compressor.
The utility model has improved the functional reliability of axial-flow pump, Axial Flow Compressor.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is blade section figure.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Referring to accompanying drawing, novel axial flow working machine impeller comprises blade 1 and wheel hub 2.The working surface 3 of blade 1 is the outer convex globoidal that outwards protrudes, and the back side 4 of blade is corresponding concave arc surface.

Claims (2)

1, novel axial flow working machine impeller comprises blade and wheel hub, it is characterized in that: the outer convex globoidal of the working surface of described blade for outwards protruding, the back side of blade is corresponding concave arc surface.
2, novel axial flow working machine impeller according to claim 1, it is characterized in that: described working machine is an axial-flow pump, is Axial Flow Compressor.
CN 200520071067 2005-04-20 2005-04-20 Impeller of axial flow type pump and compressor Expired - Fee Related CN2786330Y (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 200520071067 CN2786330Y (en) 2005-04-20 2005-04-20 Impeller of axial flow type pump and compressor
PCT/CN2006/000676 WO2006111073A1 (en) 2005-04-20 2006-04-14 A new type impeller for an axial flow machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520071067 CN2786330Y (en) 2005-04-20 2005-04-20 Impeller of axial flow type pump and compressor

Publications (1)

Publication Number Publication Date
CN2786330Y true CN2786330Y (en) 2006-06-07

Family

ID=36774904

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520071067 Expired - Fee Related CN2786330Y (en) 2005-04-20 2005-04-20 Impeller of axial flow type pump and compressor

Country Status (2)

Country Link
CN (1) CN2786330Y (en)
WO (1) WO2006111073A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2476669Y (en) * 2001-04-20 2002-02-13 升联科技股份有限公司 Improved structure of heat radiation fan
CN2539857Y (en) * 2002-01-28 2003-03-12 杨圣安 Vane of heat-radiating fan

Also Published As

Publication number Publication date
WO2006111073A1 (en) 2006-10-26

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Legal Events

Date Code Title Description
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: 20060607