CN108223023A - Flow control method and device based on groove jet stream - Google Patents
Flow control method and device based on groove jet stream Download PDFInfo
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- CN108223023A CN108223023A CN201810022093.6A CN201810022093A CN108223023A CN 108223023 A CN108223023 A CN 108223023A CN 201810022093 A CN201810022093 A CN 201810022093A CN 108223023 A CN108223023 A CN 108223023A
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- groove
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- jet stream
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- flow control
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Classifications
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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
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/20—Specially-shaped blade tips to seal space between tips and stator
-
- 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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
-
- 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
- F04D29/18—Rotors
-
- 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
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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 invention discloses a kind of flow control method and device based on groove jet stream, perforation groove is opened in vane tip and chord of foil position away from blade edge pre-determined distance, to form fluting jet stream, wherein, method includes the following steps：The first governing equation curve based on quadratic function is obtained according to vane thickness；The second governing equation curve based on quadratic function is obtained according to the width of groove and vane thickness；It controls the both sides molded line of groove respectively according to the first governing equation curve and the second governing equation curve, is gradually reduced from face of blade to vacuum side of blade with the width for controlling groove so that fluting jet stream is impacted with major leak volute into nearly right angle, weakens leakage vortex.This method can be while blade energy response be ensured, notable weak clearance leakage of blade tip whirlpool, so as to optimize nowed forming in runner, and notching construction is simple, easily realizes, can preferably ensure the efficient stable operation using all kinds of impellers of blade.
Description
Technical field
The present invention relates to impeller blade technical field, more particularly to a kind of flow control method and dress based on groove jet stream
It puts.
Background technology
The energy is the basic of human survival and development, how to utilize and convert the energy as the mankind concern hot issue it
One.Core conversion equipment of the impeller blade as the energy, performance quality have critical impact to energy conversion efficiency.Its
In, blade tip clearance is the gap between vane tip and inner walls, and size is usually smaller, but its caused leakage flow and
Phenomena such as vorticla motion to impeller internal nowed forming have great influence, and and then influence impeller operational efficiency and stabilization
Property.
At present, more in-depth study has been expanded, but for impeller internal lobe top for the mechanism of blade tip clearance flowing
The method of gap flowing control is also rarely found.For optimization Flow in Impeller form, the influence of its performance of clearance leakage vortex pair is reduced,
There is an urgent need to flow the new method of control.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide a kind of flow control method based on groove jet stream, it can be more preferable
Guarantee using blade all kinds of impellers efficient stable operation.
It is another object of the present invention to propose a kind of flow control apparatus based on groove jet stream.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of flowing controlling party based on groove jet stream
Method opens perforation groove in vane tip and chord of foil position away from blade edge pre-determined distance, to form fluting jet stream, wherein, institute
The method of stating includes the following steps：The first governing equation curve based on quadratic function is obtained according to vane thickness；According to described recessed
The width of slot and the vane thickness obtain the second governing equation curve based on quadratic function；According to first governing equation
Curve and the second governing equation curve control the both sides molded line of the groove respectively, to control the width of the groove from leaf
Piece front is gradually reduced to vacuum side of blade so that the fluting jet stream is impacted with major leak volute into nearly right angle, weakens leakage vortex.
The flow control method based on groove jet stream of the embodiment of the present invention, can be according to the first governing equation curve and
Two governing equation curves control the both sides molded line of groove respectively, to control the width of groove gradual from face of blade to vacuum side of blade
Reduce so that fluting jet stream is impacted with major leak volute into nearly right angle, significantly weak while blade energy response is ensured
Clearance leakage of blade tip whirlpool so as to optimize nowed forming in runner, preferably ensures to use the efficient steady of all kinds of impellers of blade
Fixed operation.
In addition, the flow control method according to the above embodiment of the present invention based on groove jet stream can also have it is following attached
The technical characteristic added：
Further, in one embodiment of the invention, the first governing equation curve is
Wherein, t3For the thickness of the corresponding blade of first curve, b is quadratic function coefficient, and z is sat for Descartes
Z-axis direction coordinate in mark system.
Further, in one embodiment of the invention, the second governing equation curve is：
Wherein, t4For the thickness of the blade corresponding to second curve, w is recess width.
Further, in one embodiment of the invention, it further includes：The depth of the groove is adjusted, with according to
Quadratic function coefficient, the width of the groove, the depth of the groove, the rotation angle ensure it is described fluting jet stream with it is described
The function and effect in major leak whirlpool.
Further, in one embodiment of the invention, 20%- of the depth of the groove for taken blade tip clearance value
50%, and the chord of foil position of the pre-determined distance is the position away from blade inlet edge 10%-30% chord of foils.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of flowing control dress based on groove jet stream
It puts, perforation groove is opened in vane tip and chord of foil position away from blade edge pre-determined distance, to form fluting jet stream, wherein, institute
Device is stated to include：First acquisition module, for obtaining the first governing equation curve based on quadratic function according to vane thickness；The
Two acquisition modules obtain the second governing equation based on quadratic function for the width according to the groove and the vane thickness
Curve；Control module, described in being controlled respectively according to the first governing equation curve and the second governing equation curve
The both sides molded line of groove, is gradually reduced with the width for controlling the groove from face of blade to vacuum side of blade so that the fluting
Jet stream is impacted with major leak volute into nearly right angle, weakens leakage vortex.
The flow control apparatus based on groove jet stream of the embodiment of the present invention, can be according to the first governing equation curve and
Two governing equation curves control the both sides molded line of groove respectively, to control the width of groove gradual from face of blade to vacuum side of blade
Reduce so that fluting jet stream is impacted with major leak volute into nearly right angle, significantly weak while blade energy response is ensured
Clearance leakage of blade tip whirlpool so as to optimize nowed forming in runner, preferably ensures to use the efficient steady of all kinds of impellers of blade
Fixed operation.
In addition, the flow control apparatus according to the above embodiment of the present invention based on groove jet stream can also have it is following attached
The technical characteristic added：
Further, in one embodiment of the invention, the first governing equation curve is
Wherein, t3For the thickness of the corresponding blade of first curve, b is quadratic function coefficient, and z is sat for Descartes
Z-axis direction coordinate in mark system.
Further, in one embodiment of the invention, the second governing equation curve is：
Wherein, t4For the thickness of the blade corresponding to second curve, w is recess width.
Further, in one embodiment of the invention, it further includes：Module is adjusted, for adjusting the depth of the groove
Degree, with according to the quadratic function coefficient, the groove width, the depth of the groove, the rotation angle ensure described in
Fluting jet stream and the function and effect in the major leak whirlpool.
Further, in one embodiment of the invention, 20%- of the depth of the groove for taken blade tip clearance value
50%, and the chord of foil position of the pre-determined distance is the position away from blade inlet edge 10%-30% chord of foils.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
It obtains significantly or is recognized by the practice of the present invention.
Description of the drawings
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Significantly and it is readily appreciated that, wherein：
Fig. 1 is the flow chart according to the flow control method based on groove jet stream of the embodiment of the present invention；
Fig. 2 is the schematic diagram according to the groove both sides molded line of one embodiment of the invention；
Fig. 3 is according to the blade 3D shape of one embodiment of the invention and the schematic diagram of groove structure；
Fig. 4 is to be shown according to the simulation result of the flow control method based on groove jet stream of one embodiment of the invention
It is intended to；
Fig. 5 is the structure diagram according to the flow control apparatus based on groove jet stream of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
The flow control method and dress based on groove jet stream proposed according to embodiments of the present invention is described with reference to the accompanying drawings
It puts, describes the flow control method based on groove jet stream proposed according to embodiments of the present invention with reference to the accompanying drawings first.
Fig. 1 is the flow chart of the flow control method based on groove jet stream of the embodiment of the present invention.
As shown in Figure 1, flowing control that should be based on groove jet stream includes the following steps：
In step S101, the first governing equation curve based on quadratic function is obtained according to vane thickness.
Wherein, in one embodiment of the invention, the first governing equation curve is
Wherein, t3For the thickness of the corresponding blade of the first curve, b is quadratic function coefficient, and z is z in cartesian coordinate system
Axis direction coordinate, i.e., along vane thickness direction coordinate.
It is understood that as shown in Fig. 2, the embodiment of the present invention in order to control effluxvelocity and jet direction, groove
Both sides molded line can be by two curve controlleds based on quadratic function so that recess width w gradually subtracts from face of blade to the back side
It is small.
Wherein, 3 governing equation of sideline, i.e. the first governing equation curve aret3For corresponding to sideline 3
Vane thickness, the embodiment of the present invention can realize different sideline forms by changing the value of b, wherein
In step s 102, the second governing equation song based on quadratic function is obtained according to the width of groove and vane thickness
Line.
Wherein, in one embodiment of the invention, the second governing equation curve is：
Wherein, t4For the thickness of the blade corresponding to the second curve, w is recess width.
It is understood that as shown in Fig. 2, in groove structure, 4 governing equation of sideline, i.e. the second governing equation curve
It is by curveIt is obtained around A point rotation angles α, t4For the vane thickness corresponding to sideline 4, b values and the
It is consistent in one governing equation curve,
In step s 103, the both sides of groove are controlled respectively according to the first governing equation curve and the second governing equation curve
Molded line is gradually reduced with the width for controlling groove from face of blade to vacuum side of blade so that fluting jet stream and major leak volute into
Nearly right angle impact, weakens leakage vortex.
Further, in one embodiment of the invention, the method for the embodiment of the present invention further includes：Adjust the depth of groove
Degree, with width, the depth of groove, rotation angle guarantee fluting jet stream and the major leak whirlpool according to quadratic function coefficient, groove
Function and effect.
It is understood that as shown in Fig. 2, with the variation of operating mode, the embodiment of the present invention can be by changing groove
The quadratic function coefficient b of both sides molded line, recess width w, rotation angle α, depth of groove h change fluting jet stream and major leak whirlpool
Function and effect.
Further, in one embodiment of the invention, 20%- of the depth of groove for taken blade tip clearance value
50%, and the chord of foil position of pre-determined distance is the position away from blade inlet edge 10%-30% chord of foils.
It is understood that the embodiment of the present invention can be in vane tip, the position away from blade inlet edge 10%-30% chord of foils
Perforation groove is opened, forms fluting jet stream, which impacts with major leak volute into nearly right angle, is obviously reduced leakage vortex, groove
Depth h is adjusted, 20%-50%s of the depth of groove h for taken blade tip clearance value δ.
In addition, as shown in figure 3, x is opened up for blade to y is leaf chord length direction, and z is vane thickness direction, and the present invention is implemented
Example can open perforation groove 2 at 1 top of blade, the position away from blade inlet edge 10%-30% chord of foils, form fluting jet stream, this is penetrated
Stream is impacted with major leak volute into nearly right angle, is obviously reduced leakage vortex, in one particular embodiment of the present invention, the present invention
The step of flow control method based on groove jet stream of embodiment, is as follows：
With reference to shown in Fig. 2 and Fig. 3, effluxvelocity and jet direction in order to control of the embodiment of the present invention, the both sides molded line of groove
By two curve controlleds based on quadratic function so that recess width w is gradually reduced from face of blade to the back side.Wherein first control
Equation processed ist3For the vane thickness corresponding to the first governing equation；It can be realized not by the value for changing b
Same sideline form, whereinSecond governing equation can be by curveAround A
Point rotation angle α is obtained, t4For the vane thickness corresponding to the second governing equation, wherein, b values and in the first governing equation one
It causes,
(determined as shown in figure 4, leakage vortex three-dimensional structure of the embodiment of the present invention in runner is shown in Fig. 4 by Q criterion
Justice, value are 3 × 107s-2).Wherein, Fig. 4 (a) is unslotted schematic diagram, and Fig. 4 (b) is that the fluting of the embodiment of the present invention is illustrated
Figure, it can be seen from figure 4 that slot caused by groove 2 jet stream and major leak volute impact (dotted line frame in Fig. 4 (b) into nearly right angle
Shown in), nearly 20% is reduced by the amount in whirlpool in runner after calculating discovery increase groove 2, so that major leak whirlpool is significantly declined
Subtract.
In addition, 2 depth h of groove is adjusted, 20%-50%s of the 2 depth h of groove for taken blade tip clearance value δ；With operating mode
Variation, quadratic function coefficient b, recess width w, rotation angle α, the depth of groove h of the both sides molded line for changing groove can be passed through
To change fluting jet stream and the function and effect in major leak whirlpool.
The flow control method based on groove jet stream proposed according to embodiments of the present invention, can be according to the first governing equation
Curve and the second governing equation curve control the both sides molded line of groove respectively, to control the width of groove from face of blade to blade
The back side is gradually reduced so that fluting jet stream is impacted with major leak volute into nearly right angle, while blade energy response is ensured, is shown
It has write clearance leakage of blade tip whirlpool weak, so as to optimize nowed forming in runner, has preferably ensured all kinds of impellers using blade
Efficient stable operation, and groove structure is simple, influences very little on blade construction, easy processing manufacture, and applied widely, can
For the blade in all kinds of impellers.
The flow control apparatus based on groove jet stream proposed according to embodiments of the present invention referring next to attached drawing description.
Fig. 5 is the structure diagram of the flow control apparatus based on groove jet stream of the embodiment of the present invention.
Include as shown in figure 5, being somebody's turn to do the flow control apparatus 10 based on groove jet stream：First acquisition module 100, second obtains
Module 200 and control module 300.
Wherein, the first acquisition module 100 is used to obtain the first governing equation song based on quadratic function according to vane thickness
Line.Second acquisition module 200 is used to obtain the second governing equation based on quadratic function according to the width and vane thickness of groove
Curve.Control module 300 is used to control the both sides of groove respectively according to the first governing equation curve and the second governing equation curve
Molded line is gradually reduced with the width for controlling groove from face of blade to vacuum side of blade so that fluting jet stream and major leak volute into
Nearly right angle impact, weakens leakage vortex.The device 10 of the embodiment of the present invention can significantly decline while blade energy response is ensured
Weak clearance leakage of blade tip whirlpool, so as to optimize nowed forming in runner, and notching construction is simple, easily realizes, can be better
Ensure the efficient stable operation using all kinds of impellers of blade.
Further, in one embodiment of the invention, the first governing equation curve is
Wherein, t3For the thickness of the corresponding blade of the first curve, b is quadratic function coefficient, and z is z in cartesian coordinate system
Axis direction coordinate, i.e., along vane thickness direction coordinate.
Further, in one embodiment of the invention, the second governing equation curve is：
Wherein, t4For the thickness of the blade corresponding to the second curve, w is recess width.
Further, in one embodiment of the invention, the device 10 of the embodiment of the present invention further includes：Adjust module.
Wherein, adjustment module is used to adjust the depth of groove, with according to quadratic function coefficient, groove width, the depth of groove, rotation
Angle ensures fluting jet stream and the function and effect in major leak whirlpool.
Further, in one embodiment of the invention, 20%- of the depth of groove for taken blade tip clearance value
50%, and the chord of foil position of pre-determined distance is the position away from blade inlet edge 10%-30% chord of foils.
It should be noted that the aforementioned explanation to the flow control method embodiment based on groove jet stream is also applied for
The flow control apparatus based on groove jet stream of the embodiment, details are not described herein again.
The flow control apparatus based on groove jet stream proposed according to embodiments of the present invention, can be according to the first governing equation
Curve and the second governing equation curve control the both sides molded line of groove respectively, to control the width of groove from face of blade to blade
The back side is gradually reduced so that fluting jet stream is impacted with major leak volute into nearly right angle, while blade energy response is ensured, is shown
It has write clearance leakage of blade tip whirlpool weak, so as to optimize nowed forming in runner, has preferably ensured all kinds of impellers using blade
Efficient stable operation, and groove structure is simple, influences very little on blade construction, easy processing manufacture, and applied widely, can
For the blade in all kinds of impellers.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be based on orientation shown in the drawings or
Position relationship is for only for ease of the description present invention and simplifies description rather than instruction or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature right over second feature or oblique upper or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " example ", " is specifically shown " some embodiments "
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It is combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the different embodiments or examples described in this specification and the feature of different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of flow control method based on groove jet stream, which is characterized in that vane tip and away from blade edge preset away from
From chord of foil position open perforation groove, to form fluting jet stream, wherein, the described method comprises the following steps：
The first governing equation curve based on quadratic function is obtained according to vane thickness；
The second governing equation curve based on quadratic function is obtained according to the width of the groove and the vane thickness；And
Control the both sides molded line of the groove respectively according to the first governing equation curve and the second governing equation curve,
It is gradually reduced from face of blade to vacuum side of blade with the width for controlling the groove so that the fluting jet stream and major leak volute
It is impacted into nearly right angle, weakens leakage vortex.
2. the flow control method according to claim 1 based on groove jet stream, which is characterized in that first controlling party
Journey curve is
Wherein, t3For the thickness of the corresponding blade of first curve, b is quadratic function coefficient, and z is cartesian coordinate system
Middle z-axis direction coordinate.
3. the flow control method according to claim 2 based on groove jet stream, which is characterized in that second controlling party
Journey curve is：
Wherein, t4For the thickness of the blade corresponding to second curve, w is recess width.
4. the flow control method according to claim 3 based on groove jet stream, which is characterized in that further include：
Adjust the depth of the groove, with according to the quadratic function coefficient, the groove width, the depth of the groove,
The rotation angle ensures the fluting jet stream and the function and effect in the major leak whirlpool.
5. the flow control method according to claim 4 based on groove jet stream, which is characterized in that the depth of the groove
For the 20%-50% of taken blade tip clearance value, and the chord of foil position of the pre-determined distance is away from blade inlet edge 10%-30% chord of foils
Position.
6. a kind of flow control apparatus based on groove jet stream, which is characterized in that vane tip and away from blade edge preset away from
From chord of foil position open perforation groove, to form fluting jet stream, wherein, described device includes：
First acquisition module, for obtaining the first governing equation curve based on quadratic function according to vane thickness；
Second acquisition module obtains the second control based on quadratic function for the width according to the groove and the vane thickness
Equation curve processed；And
Control module is described recessed for being controlled respectively according to the first governing equation curve and the second governing equation curve
The both sides molded line of slot, is gradually reduced with the width for controlling the groove from face of blade to vacuum side of blade so that the fluting is penetrated
Stream is impacted with major leak volute into nearly right angle, weakens leakage vortex.
7. the flow control apparatus according to claim 6 based on groove jet stream, which is characterized in that first controlling party
Journey curve is
Wherein, t3For the thickness of the corresponding blade of first curve, b is quadratic function coefficient, and z is cartesian coordinate system
Middle z-axis direction coordinate.
8. the flow control apparatus according to claim 7 based on groove jet stream, which is characterized in that second controlling party
Journey curve is：
Wherein, t4For the thickness of the blade corresponding to second curve, w is recess width.
9. the flow control apparatus according to claim 8 based on groove jet stream, which is characterized in that further include：
Adjust module, for adjusting the depth of the groove, with according to the quadratic function coefficient, the groove width, institute
State the depth of groove, the rotation angle ensures the fluting jet stream and the function and effect in the major leak whirlpool.
10. the flow control apparatus according to claim 9 based on groove jet stream, which is characterized in that the depth of the groove
The 20%-50% for taken blade tip clearance value is spent, and the chord of foil position of the pre-determined distance is away from blade inlet edge 10%-30% leaves
The position of string.
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|---|---|---|---|
| CN201810022093.6A CN108223023B (en) | 2018-01-10 | 2018-01-10 | Flow control method and device based on groove jet flow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810022093.6A CN108223023B (en) | 2018-01-10 | 2018-01-10 | Flow control method and device based on groove jet flow |
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| CN108223023A true CN108223023A (en) | 2018-06-29 |
| CN108223023B CN108223023B (en) | 2019-12-17 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07253003A (en) * | 1993-12-23 | 1995-10-03 | United Technol Corp <Utc> | Gas-turbine engine |
| US5997251A (en) * | 1997-11-17 | 1999-12-07 | General Electric Company | Ribbed turbine blade tip |
| US6027306A (en) * | 1997-06-23 | 2000-02-22 | General Electric Company | Turbine blade tip flow discouragers |
| US20120230818A1 (en) * | 2009-09-30 | 2012-09-13 | Andrew Shepherd | Airfoil and corresponding guide vane, blade, gas turbine and turbomachine |
| US8313287B2 (en) * | 2009-06-17 | 2012-11-20 | Siemens Energy, Inc. | Turbine blade squealer tip rail with fence members |
| CN107246285A (en) * | 2017-05-19 | 2017-10-13 | 燕山大学 | A kind of turbomachine clearance leakage of blade tip is combined passive control methods |
-
2018
- 2018-01-10 CN CN201810022093.6A patent/CN108223023B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07253003A (en) * | 1993-12-23 | 1995-10-03 | United Technol Corp <Utc> | Gas-turbine engine |
| US6027306A (en) * | 1997-06-23 | 2000-02-22 | General Electric Company | Turbine blade tip flow discouragers |
| US5997251A (en) * | 1997-11-17 | 1999-12-07 | General Electric Company | Ribbed turbine blade tip |
| US8313287B2 (en) * | 2009-06-17 | 2012-11-20 | Siemens Energy, Inc. | Turbine blade squealer tip rail with fence members |
| US20120230818A1 (en) * | 2009-09-30 | 2012-09-13 | Andrew Shepherd | Airfoil and corresponding guide vane, blade, gas turbine and turbomachine |
| CN107246285A (en) * | 2017-05-19 | 2017-10-13 | 燕山大学 | A kind of turbomachine clearance leakage of blade tip is combined passive control methods |
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| Publication number | Publication date |
|---|---|
| CN108223023B (en) | 2019-12-17 |
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