CN108071425A - Axial flow turbine - Google Patents
Axial flow turbine Download PDFInfo
- Publication number
- CN108071425A CN108071425A CN201711307503.3A CN201711307503A CN108071425A CN 108071425 A CN108071425 A CN 108071425A CN 201711307503 A CN201711307503 A CN 201711307503A CN 108071425 A CN108071425 A CN 108071425A
- Authority
- CN
- China
- Prior art keywords
- center hub
- leading edge
- trailing edge
- axial flow
- connection strap
- 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.)
- Granted
Links
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
- F01D5/146—Shape, i.e. outer, aerodynamic form of blades with tandem configuration, split blades or slotted blades
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- 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
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
-
- 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
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Architecture (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of axial flow turbines, multiple hollow blades including center hub and in the circumferential direction of center hub, hollow blade extends radially outwardly along center hub, and hollow blade includes upper surface, lower surface, leading edge, trailing edge and the corresponding tip of fixing end with hollow blade；The middle part of lower surface is equipped with bolt hole, and the inner wall of upper surface is equipped with to be bolted with the corresponding bolt joint seat of bolt hole, bolt hole with bolt joint seat；Upper surface, leading edge and trailing edge are integrally formed, and the upper and lower ends of lower surface are respectively equipped with the first connection strap and the second connection strap, and leading edge is equipped with is equipped with the second link slot to match with the second connection strap with matched first link slot of the first connection strap, trailing edge.Present invention alleviates the weight of axial flow turbine entirety, improve fuel efficiency, pass through the elastic of adjusting bolt, the radian of minor alteration upper and lower surface, so as to adjust axial flow turbine to optimum working efficiency.
Description
Technical field
The present invention relates to a kind of axial flow turbines.
Background technology
Gas-turbine unit is a kind of vane machine that the energy of high-temperature high-pressure fuel gas stream is converted to mechanical energy, including whirlpool
Shell and turbine.Mechanical energy is exported in the form of turbine shaft power, for driving compressor in gas-turbine unit and other
Attachment (generator, oil pump etc.) is also used for driving air propeller or fan on turbo-propeller or turbofan,
Also it is used for driving the rotor of helicopter on turboaxle motor.
Turbine is divided into two class of radial turbine and axial turbine.
Radial turbine
Combustion gas is primarily radially flowed in radial turbine, and radial turbine is made of the part such as guider, radial-flow turbine, and one
As be used for Small Gas Turbine Engine or the power as hydraulic pump.
Axial turbine
Combustion gas is predominantly axially flowed in axial turbine, is made of guider and axial flow turbine two parts.One row leads
To device blade and row's axial flow turbine blade composition level-one axial direction turbine.Stator blade and most axial flow turbine blade institute
The gas channel of composition is convergent contour, and high-temperature high-pressure fuel gas, which initially enter to expand in guider, to be accelerated, with close or bigger
Axial flow turbine blade is rushed in the speed of local velocity of sound, rotates axial flow turbine；Combustion gas is in the convergent passage of axial flow turbine blade
In continue to expand, and to axial flow turbine with driving force, make active wheel rotation and output power at a high speed.
It is known that axial flow turbine blade is the solid construction cast using metal material, axial flow turbine entirety has been which increased
Weight, cause decrease in fuel efficiency.
The content of the invention
According to the technical issues of set forth above, and provide a kind of axial flow turbine.The technological means that the present invention uses is as follows：
A kind of axial flow turbine, multiple hollow blades including center hub and in the circumferential direction of the center hub, the sky
Lobus cardiacus piece extends radially outwardly along the center hub, the hollow blade include upper surface, lower surface, leading edge, trailing edge and with
The corresponding tip of fixing end of the hollow blade；
The beginning of the trailing edge is located at the lower section of the beginning line of two adjacent leading edges, and the leading edge is along the center
Hub extends radially outwardly, and the trailing edge extends radially outwardly along the center hub, the upper end of the upper surface and it is described under
The upper end on surface is intersected in the leading edge, and the upper surface and the lower surface are respectively from the leading edge along the axis of the center hub
It is bent to extension and to the direction of rotation of the axial flow turbine, the lower end of the lower end of the upper surface and the lower surface is intersected in
The trailing edge, the friendship of one end away from the center hub of one end and the lower surface away from the center hub of the upper surface
It is compiled in the tip；
The middle part of the lower surface is equipped with bolt hole, and the inner wall of the upper surface is equipped with and the corresponding spiral shell of the bolt hole
Joint chair is tethered, the bolt hole is bolted with the bolt joint seat, passes through the elastic of adjusting bolt, minor alteration institute
The radian of upper surface and the lower surface is stated, so as to adjust the work efficiency of the axial flow turbine；
The upper surface, the leading edge and the trailing edge are integrally formed, and the upper and lower ends of the lower surface are respectively equipped with
First connection strap and the second connection strap, the leading edge be equipped with matched first link slot of first connection strap, after described
Edge is equipped with the second link slot to match with second connection strap.
The leading edge and the trailing edge are respectively provided with arc-shaped transitional surface, and the setting of arc-shaped transitional surface is played better water conservancy diversion and made
With.
The material hardness of the lower surface is more than the material hardness of the upper surface, the leading edge and the trailing edge, is adjusting
Save bolt it is elastic during so that the upper surface obtains the deformation of bigger.
The material of the upper surface, the leading edge and the trailing edge is 1Cr13；
The material of the lower surface is 1Cr12MoWV.
Compared with prior art, present invention alleviates the weight of axial flow turbine entirety, fuel efficiency is improved, passes through adjusting
Elastic, the radian of minor alteration upper and lower surface of bolt, so as to adjust axial flow turbine to optimum working efficiency.
The present invention can be widely popularized in fields such as gas-turbine units for the foregoing reasons.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the front view of 1 Axial-Flow turbine of the embodiment of the present invention.
Fig. 2 is the rearview of 1 Axial-Flow turbine of the embodiment of the present invention.
Fig. 3 is that (section is by bolt axially bored line and parallel in for the longitudinal section of hollow blade in the embodiment of the present invention 1
The axis of heart hub).
Fig. 4 is I portions enlarged diagram in Fig. 3.
Fig. 5 is II portions enlarged diagram in Fig. 3.
Fig. 6 is that (section is by bolt axially bored line and parallel in for the longitudinal section of hollow blade in the embodiment of the present invention 2
The axis of heart hub).
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work belong to the scope of protection of the invention.
Embodiment 1
As Figure 1-Figure 5, a kind of axial flow turbine, it is multiple including center hub 1 and in the circumferential direction of the center hub 1
Hollow blade 2, the extending radially outwardly along the center hub 1 of hollow blade 2, the hollow blade 2 include upper surface 21,
Lower surface 22, leading edge 23, trailing edge 24 and the corresponding tip 25 of fixing end with the hollow blade 2；
The beginning of the trailing edge 24 is located at the lower section of the beginning line of two adjacent leading edges 23, and the leading edge 23 is along institute
State extending radially outwardly for center hub 1, the extending radially outwardly along the center hub 1 of trailing edge 24, the upper surface 21
The upper end of upper end and the lower surface 22 is intersected in the leading edge 23, and the upper surface 21 and the lower surface 22 are respectively from described
Leading edge 23 is bent along the axially extending of the center hub 1 and to the direction of rotation of the axial flow turbine, under the upper surface 21
The lower end of end and the lower surface 22 is intersected in the trailing edge 24, one end away from the center hub 1 of the upper surface 21 and
One end away from the center hub 1 of the lower surface 22 is intersected in the tip 25；
The middle part of the lower surface 22 is equipped with bolt hole, and the inner wall of the upper surface 21 is equipped with corresponding with the bolt hole
Bolt joint seat 26, the bolt hole is connected with the bolt joint seat 26 by bolt 27；
The upper surface 21, the leading edge 23 and the trailing edge 24 are integrally formed, the upper and lower ends of the lower surface 22
It is respectively equipped with the first connection strap 28 and the second connection strap 29, the leading edge 23 is equipped with and first connection strap 28 matched the
One link slot, the trailing edge 24 are equipped with the second link slot to match with second connection strap 29.
The material that the material hardness of the lower surface 22 is more than the upper surface 21, the leading edge 23 and the trailing edge 24 is hard
Degree.
Embodiment 2
As shown in fig. 6, a kind of a kind of distinguishing characteristics of axial flow turbine in axial flow turbine, with embodiment 1 is, it is described
Leading edge 23 and the trailing edge 24 are respectively provided with arc-shaped transitional surface 3.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme.
Claims (3)
- A kind of 1. axial flow turbine, which is characterized in that multiple hollow leaves including center hub and in the circumferential direction of the center hub Piece, the hollow blade extend radially outwardly along the center hub, the hollow blade include upper surface, lower surface, leading edge, Trailing edge and the corresponding tip of fixing end with the hollow blade；The beginning of the trailing edge is located at the lower section of the beginning line of two adjacent leading edges, and the leading edge is along the center hub It extends radially outwardly, the trailing edge extends radially outwardly along the center hub, the upper end of the upper surface and the lower surface Upper end be intersected in the leading edge, the upper surface and the lower surface are prolonged respectively from the leading edge along the axial direction of the center hub It stretches and is bent to the direction of rotation of the axial flow turbine, the lower end of the lower end of the upper surface and the lower surface is intersected in described Trailing edge, one end of the separate center hub and one end away from the center hub of the lower surface of the upper surface are intersected in The tip；The middle part of the lower surface is equipped with bolt hole, and the inner wall of the upper surface connects equipped with bolt corresponding with the bolt hole Joint chair, the bolt hole are bolted with the bolt joint seat；The upper surface, the leading edge and the trailing edge are integrally formed, and the upper and lower ends of the lower surface are respectively equipped with first Connection strap and the second connection strap, the leading edge is equipped with to be set with matched first link slot of first connection strap, the trailing edge There is the second link slot to match with second connection strap.
- 2. axial flow turbine according to claim 1, it is characterised in that：The leading edge and the trailing edge are respectively provided with arc transition Face.
- 3. axial flow turbine according to claim 1, it is characterised in that：The material hardness of the lower surface is more than the upper table The material hardness in face, the leading edge and the trailing edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711307503.3A CN108071425B (en) | 2017-12-11 | 2017-12-11 | Axial flow turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711307503.3A CN108071425B (en) | 2017-12-11 | 2017-12-11 | Axial flow turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071425A true CN108071425A (en) | 2018-05-25 |
| CN108071425B CN108071425B (en) | 2019-11-12 |
Family
ID=62157993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711307503.3A Active CN108071425B (en) | 2017-12-11 | 2017-12-11 | Axial flow turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108071425B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5498133A (en) * | 1995-06-06 | 1996-03-12 | General Electric Company | Pressure regulated film cooling |
| CN1170079A (en) * | 1996-05-02 | 1998-01-14 | 亚瑞亚·勃朗勃威力有限公司 | Blades of fluid machine affected by hot loading |
| CN201650865U (en) * | 2010-04-16 | 2010-11-24 | 浙江明新风机有限公司 | Fan blade of cooling fan |
| US8851421B2 (en) * | 2009-09-01 | 2014-10-07 | Rolls-Royce Plc | Aerofoil with erosion resistant leading edge |
| CN204591580U (en) * | 2015-05-13 | 2015-08-26 | 中国科学院工程热物理研究所 | H type blade of vertical axis wind turbine and support connection structure |
-
2017
- 2017-12-11 CN CN201711307503.3A patent/CN108071425B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5498133A (en) * | 1995-06-06 | 1996-03-12 | General Electric Company | Pressure regulated film cooling |
| CN1170079A (en) * | 1996-05-02 | 1998-01-14 | 亚瑞亚·勃朗勃威力有限公司 | Blades of fluid machine affected by hot loading |
| US8851421B2 (en) * | 2009-09-01 | 2014-10-07 | Rolls-Royce Plc | Aerofoil with erosion resistant leading edge |
| CN201650865U (en) * | 2010-04-16 | 2010-11-24 | 浙江明新风机有限公司 | Fan blade of cooling fan |
| CN204591580U (en) * | 2015-05-13 | 2015-08-26 | 中国科学院工程热物理研究所 | H type blade of vertical axis wind turbine and support connection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108071425B (en) | 2019-11-12 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191015 Address after: 116023 G3013, 3rd floor, 12 Renxian Street, Qixianling, Lingshui Town, Dalian High-tech Park, Liaoning Province Applicant after: Dalian Science and Technology Co., Ltd. Address before: 116000 Haimao Village Agricultural Team, Ganjingzi District, Dalian City, Liaoning Province Applicant before: Dalian Tongya Heavy Industry Co. Ltd. |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |