CN106761946A - Turbomachine arteries and veins flap-type blade - Google Patents
Turbomachine arteries and veins flap-type blade Download PDFInfo
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- CN106761946A CN106761946A CN201611162213.XA CN201611162213A CN106761946A CN 106761946 A CN106761946 A CN 106761946A CN 201611162213 A CN201611162213 A CN 201611162213A CN 106761946 A CN106761946 A CN 106761946A
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- veins
- arteries
- turbomachine
- blade
- impeller
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- 210000001367 Arteries Anatomy 0.000 title claims abstract description 62
- 210000003462 Veins Anatomy 0.000 title claims abstract description 61
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 230000001154 acute Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 1
- 210000002073 Venous Valves Anatomy 0.000 description 1
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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
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
-
- 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
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. 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
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
Abstract
The invention belongs to field of fluid machinery, it is related to a kind of turbomachine arteries and veins flap-type blade, it is the several arteries and veins leaflet pieces of interval setting in turbomachine primary blades, the primary blades refer to the blade of the diffuser at guide vane at impeller eye, impeller blade or impeller outlet, the arteries and veins leaflet piece is designed as laminated structure, its one end is connected with the side wall of primary blades, and opposite other end is extended in fluid passage, and the trend of arteries and veins leaflet piece is at an acute angle with the flow direction of fluid in runner.The present invention uses arteries and veins flap-type structure design, make the fluid working substance more olderly flowage of turbomachine, effectively mitigate and prevent unsteady vortex, turbulent flow from being formed, reduce the flow losses of fluid, and the U-shape structure that adjacent arteries and veins leaflet piece is constituted with original blade can be collected to the energy of fluid working substance fluctuation, reflect, realize recycling, so as to reduce flow losses, and then improve the energy conversion efficiency of turbomachine.
Description
Technical field
The invention belongs to field of fluid machinery, it is related to a kind of blade of turbomachine, specifically a kind of turbomachine arteries and veins flap-type
Blade.
Background technology
Turbomachine generally refers to make the energy of fluid working substance be converted to axle by impeller with continuous rotating vane as body
The dynamic power machine of power, such as gas turbine, steam turbine, wind energy conversion system, hydraulic turbine prime movers, it is also possible to refer to by axle power
Energy passes to the dynamic power machine of fluid working substance, such as air blower, water pump, centrifugal-flow compressor working machine by impeller.Impeller
Machinery occupy highly important status in national economy especially whole heavy industry system, be widely used to aviation, power station,
The field such as naval vessel and metallurgy, exploration, chemical industry, building.
Due to fluid working substance enter impeller before, it is between impeller blade or easy in the diffuser medium stage of impeller outlet
Unsteady vortex, turbulent flow are formed, causes the efficiency of existing conventional turbomachine to be generally lower than 90%, some turbomachines,
Such as centrifugal-flow compressor, compression efficiency is even below 85%, causes energy conversion, utilization ratio relatively low, to a certain degree the upper limit
Its range of application is made.For the relatively low present situation of efficiency of energy utilization, some turbomachines set up directing vane at impeller eye
Piece and/or blade is set up in the diffuser of impeller outlet, to improve the flow condition of fluid working substance, improve efficiency, but it is overall
Effect is still not ideal enough.
The content of the invention
It is an object of the invention to provide a kind of turbomachine arteries and veins flap-type blade, its blade uses arteries and veins flap-type structure design, makes
Fluid working substance more olderly flowage, effectively mitigates and prevents unsteady vortex, turbulent flow from being formed, and adjacent arteries and veins leaflet piece with
The U-shape structure that original blade is constituted can be collected to the energy of fluid working substance fluctuation, reflect, and realize recycling, so as to reduce
Flow losses, and then improve the energy conversion efficiency of turbomachine.
The technical solution adopted in the present invention：
A kind of turbomachine arteries and veins flap-type blade, it is characterized in that the several arteries and veins leaflets of interval setting in turbomachine primary blades
Piece, the length of arteries and veins leaflet piece is with away from that can be designed as needed, the spacing of adjacent blades is generally smaller each other.The main lobe
Piece refers to the blade of the diffuser at guide vane at impeller eye, impeller blade or impeller outlet.The arteries and veins leaflet piece sets
Laminated structure is calculated as, its one end is connected with the side wall (pressure face and/or suction surface) of primary blades, and opposite other end extends to fluid
In passage, the trend of arteries and veins leaflet piece is (generally less than 45 degree) at an acute angle with the flow direction of fluid in runner.The work of arteries and veins leaflet piece
It is similar with the effect of human body artery valve, venous valve with principle and function, therefore it is referred to as arteries and veins leaflet piece, arteries and veins leaflet piece on the one hand can
Flowed back in runner with preventing and mitigating fluid, on the other hand, unsteady vortex in runner, the generation of turbulent flow can be mitigated, subtracted
Few flow losses, meanwhile, the U-shape structure that adjacent arteries and veins leaflet piece and primary blades side wall are constituted can be to ripple complicated in runner
(such as shock wave) is collected, reflects, and the energy for being capable of achieving ripple is re-used, so that flow losses are reduced, the bottom of U-shape structure
Smooth semicircular arc is generally processed into, to improve the reflection efficiency to ripple.
As a further improvement on the present invention, arteries and veins leaflet piece is designed as elastic construction, can be using bullets such as spring steel, rubber
Property material make, it is deformed upon within the specific limits, so that arteries and veins leaflet piece can be according to refrigerant flow rate, pressure and other parameters
Change and change within the specific limits so that turbomachine steady operation in broader scope.
As a further improvement on the present invention, arteries and veins leaflet piece can be arranged on according to actual needs primary blades side it is (logical
It is often suction surface) or while it is arranged on the both sides (pressure face and suction surface) of primary blades.
As a further improvement on the present invention, one end that the arteries and veins leaflet piece is extended in fluid passage is designed as blade knot
Structure.
As a further improvement on the present invention, arteries and veins leaflet piece, one end of arteries and veins leaflet piece and impeller are set on the impeller vanes
Blade is connected, and the side pressed close to clock pulse leaflet piece and hub disk is solidly fixed with wheel disc, and can both play prevents and subtract
Lighter fluid is by the clearance backflow between arteries and veins leaflet piece and wheel disc and unsteady vortex, turbulent flow occurs, reduces flow losses, and
Bracing reinforcement effect can be played to original impeller blade, so as to improve the bulk strength of impeller blade.
As a further improvement on the present invention, in the U-shape structure space being made up of adjacent arteries and veins leaflet piece, primary blades side wall
It is partially filled with elastic material (a part of space in U-shaped space is filled with elastic material), such as rubber, rubber bubble, makes U-shaped
Structure can be reflected the ripple in more broad spectrum, so as to further reduce loss, improve efficiency, this improvement is mainly fitted
It is the situation of liquid working substance for working medium.
In theory, this design philosophy of arteries and veins leaflet piece can promote the use of any position of turbomachine fluid passage,
Fluid working substance speed in runner, pressure is applied to drastically to change, or fluid and mechanical component there may be separate position with
And there may be the position of shock wave, except the foregoing guide wheel being applied to before impeller eye, the expansion of the blade, impeller outlet of impeller
The positions such as depressor, can also use the positions such as the larger fluid line of camber, at this time arteries and veins leaflet piece can be arranged on into fluid
On the tube wall of pipeline, the trend of arteries and veins leaflet piece is at an acute angle with the flow direction of fluid working substance, and this design can also reduce bend
The flow losses at position, improve efficiency.
The beneficial effects are mainly as follows：
1st, efficiency higher is capable of achieving, arteries and veins leaflet piece is increased on existing turbomachine and is effectively reduced fluid in runner
Flow losses, be improved overall efficiency.
The 2nd, arteries and veins leaflet piece is set on the impeller vanes, and arteries and veins leaflet piece presses close to the side of hub disk and hub disk is connected,
So that arteries and veins leaflet piece plays a supportive role in primary blades side, due to being provided with multiple arteries and veins leaflet pieces so that overall transversal of blade
Area is greatly increased, and so as to increased the bulk strength of blade, can extend the service life of impeller blade.
Brief description of the drawings
Fig. 1 is the present invention in centrifugal-flow compressor impeller and the application schematic diagram of diffuser.
In figure：1st, hub disk；2nd, diffuser；3rd, diffuser vane；4th, diffuser arteries and veins leaflet piece；5th, impeller arteries and veins leaflet
Piece；6th, impeller blade.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings and by embodiment, but not as a limitation of the invention.
The present invention uses arteries and veins flap-type structure design, makes fluid working substance more olderly flowage, effectively mitigates and prevent non-fixed
Often vortex, turbulent flow are formed, reduction flow losses, and then improve the energy conversion efficiency of turbomachine, are with centrifugal-flow compressor
Example, as shown in Figure 1.Centrifugal-flow compressor of the present invention includes the impeller being made up of hub disk 1 and impeller blade 6, in leaf
Wheel exit sets diffuser 2, and diffuser vane 3 is set in diffuser.Several are set on the suction surface of impeller blade 6
Every impeller arteries and veins leaflet piece 5, impeller arteries and veins leaflet piece 5 is designed as laminated structure, is made using with the identical material of impeller blade 6,
Its one end is connected with the side wall of impeller blade 6, and the side for pressing close to hub disk is connected on hub disk 1, and opposite other end sets
In being calculated as edge structure and extending to the fluid course between impeller blade, its trend is in sharp with the flow direction of fluid in runner
Angle；The several diffuser arteries and veins leaflet pieces 4 of setting are respectively separated on the two side of diffuser vane 3, diffuser arteries and veins leaflet piece 4 is designed
It is laminated structure, is made using spring steel material, its one end is connected with the side wall of diffuser vane 3, and opposite other end is designed as
Edge structure simultaneously extends to the fluid course between diffuser vane, and its trend is in sharp with the flow direction of fluid in runner
Angle.In the presence of impeller arteries and veins leaflet piece 5, diffuser arteries and veins leaflet piece 4, gas flowing in impeller and diffuser can be substantially improved,
Gas flow loss is reduced, compressor efficiency is improved.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of the technology of the present invention principle is not departed from, some improvements and modifications can also be made, these improvements and modifications
Also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of turbomachine arteries and veins flap-type blade, it is characterized in that the several arteries and veins leaflet pieces of interval setting in turbomachine primary blades；
The primary blades refer to the blade of the diffuser at guide vane at impeller eye, impeller blade or impeller outlet；The arteries and veins
Leaflet piece is designed as laminated structure, and its one end is connected with the side wall of primary blades, and opposite other end is extended in fluid passage, arteries and veins valve
The trend of blade is at an acute angle with the flow direction of fluid in runner.
2. turbomachine arteries and veins flap-type blade according to claim 1, it is characterised in that：Arteries and veins leaflet piece is designed as elastic knot
Structure.
3. turbomachine arteries and veins flap-type blade according to claim 1, it is characterised in that：Arteries and veins leaflet piece is arranged on primary blades
Side is arranged on the both sides of primary blades simultaneously.
4. turbomachine arteries and veins flap-type blade according to claim 1, it is characterised in that：The arteries and veins leaflet piece extends to fluid
One end in passage is designed as edge structure.
5. turbomachine arteries and veins flap-type blade according to claim 1, it is characterised in that：The primary blades are impeller blades,
Arteries and veins leaflet piece is set on the impeller vanes, and one end and the impeller blade of arteries and veins leaflet piece are connected, with clock pulse leaflet piece and hub disk
The side pressed close to is solidly fixed with wheel disc.
6. turbomachine arteries and veins flap-type blade according to claim 1, it is characterised in that：By adjacent arteries and veins leaflet piece, main lobe
The U-shape structure interior volume point filling elastic material that piece side wall is constituted.
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| CN201611162213.XA CN106761946A (en) | 2016-12-15 | 2016-12-15 | Turbomachine arteries and veins flap-type blade |
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| CN201611162213.XA CN106761946A (en) | 2016-12-15 | 2016-12-15 | Turbomachine arteries and veins flap-type blade |
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| CN203548269U (en) * | 2013-10-29 | 2014-04-16 | 温岭市大洋电器厂 | Backward type centrifugal fan |
| CN103939148A (en) * | 2014-04-28 | 2014-07-23 | 哈尔滨工程大学 | Radial flow turbine with multiple splitter blades |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566164A (en) * | 2009-05-15 | 2009-10-28 | 林钧浩 | Multifunctional synchronous after flow ventilating compressor |
| CN101598138A (en) * | 2009-07-07 | 2009-12-09 | 西安交通大学 | Secondary splitter blade type centrifugal impeller |
| DE102010020307A1 (en) * | 2010-05-12 | 2011-11-17 | Daimler Ag | Rotor for fluid energy machine, particularly compressor of exhaust gas turbocharger, has base body and guide vane that is flowed by medium flowing in fluid energy machine |
| CN102691674A (en) * | 2011-03-25 | 2012-09-26 | 台达电子工业股份有限公司 | Impeller structure |
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Application publication date: 20170531 |