CN206707771U - A kind of marine turbing erosion resistance movable vane piece - Google Patents
A kind of marine turbing erosion resistance movable vane piece Download PDFInfo
- Publication number
- CN206707771U CN206707771U CN201720509145.3U CN201720509145U CN206707771U CN 206707771 U CN206707771 U CN 206707771U CN 201720509145 U CN201720509145 U CN 201720509145U CN 206707771 U CN206707771 U CN 206707771U
- Authority
- CN
- China
- Prior art keywords
- blade body
- movable vane
- vane piece
- section
- erosion resistance
- 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
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Abstract
A kind of turbine blade is the utility model is related to, more particularly, to a kind of marine turbing erosion resistance movable vane piece.Its movable vane piece mainly present in solution prior art is when in use because the angle of rotation is larger, and stress is larger, and so as to which the erosion being subject to is also larger, therefore service life is shorter, when can not use in first pressure level, the technical problem of the higher grade of production cost.The utility model includes blade body（1）, described blade body（1）On both sides of the middle be provided with groove（2）, the bottom of blade body is provided with breach（3）, the section on the top of blade body is crescent, and the line at crescent moon both ends and the angle α of plane are 10 14 °, and the section of blade body indentation, there is the quadrangle being obliquely installed.
Description
Technical field
A kind of turbine blade is the utility model is related to, more particularly, to a kind of marine turbing erosion resistance movable vane piece.
Background technology
Steam turbine blade is mounted on turbine rotor, and produces moment of torsion under the vapor action of HTHP, is made
The important component of turbine rotor high-speed rotation.Chinese patent discloses a kind of final stage moving blade of feed pump industrial steam turbine
（Publication number：CN106256993A）, a kind of final stage moving blade of feed pump industrial steam turbine, including be sequentially connected blade root,
Blade and for making blade form the shroud of whole circle self-locking, blade is provided with lacing wire boss, and the molded line of blade is variable cross-section distortion type
Line, have relative torsion between the two neighboring section of blade, along blade root to shroud short transverse, with blade with respect to the high H of leaf by
0% monotonicallys increase up to 100%, and the pitch to chord length in tea residue section to leaf top section is than T/b changing rule：0.2≤T/b≤
1.0, the pitch from tea residue section to leaf top section is than T/B changing rule with blade profile section axial width：0.2≤T/B≤
4.0；Pitch from tea residue section to leaf top section is than T/Dmax changing rule with blade profile section maximum gauge：2.4≤T/
Dmax≤17.6；Pitch from tea residue section to leaf top section is than T/A changing rule with blade profile area of section：0.02≤T/A
≤0.3；Blade profile leading-edge radius R0 changing rules from tea residue section to leaf top section are：1.6mm≤R0≤2.2mm；From tea residue
The blade profile trailing edge radius R1 changing rules of section to leaf top section are：0.7mm≤R1≤1.1mm.But this movable vane piece makes
Used time, stress was larger because the angle of rotation is larger, and so as to which the erosion being subject to is also larger, therefore service life is shorter, can not make
In used time first pressure level, production cost is higher.
Utility model content
The utility model is to provide a kind of marine turbing erosion resistance movable vane piece, and it is mainly solved present in prior art
Movable vane piece when in use because the angle of rotation is larger, stress is larger, so as to which the erosion being subject to is also larger, therefore service life
It is shorter, when can not use in first pressure level, the technical problem of the higher grade of production cost.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：
A kind of marine turbing erosion resistance movable vane piece of the present utility model, including blade body, described blade body
On both sides of the middle is provided with groove, and the bottom of blade body is provided with breach, and the section on the top of blade body is crescent, and crescent moon
The line at both ends and the angle α of plane are 10-14 °, and the section of blade body indentation, there is the quadrangle being obliquely installed.Angle α
It can be 12 °, after setting this angle, when rotated, the steam erosion area that it is subject to is smaller, therefore resistance to punching for whole movable vane piece
The effect of erosion is preferable, and service life lengthens significantly.
Preferably, the bottom surface of described blade body is provided with guiding gutter, the width of the bottom surface of guiding gutter is open less than it
Width.By guiding gutter, blade body when rotated, can carry out water conservancy diversion, such steam will not be in large area to some vapor
Blade body is contacted, so that movable vane piece can increase the service life.
Preferably, the upper end of described groove is provided with protuberance, the outer surface of protuberance is provided with cutting groove, and cutting groove is
Triangle, fin is provided with it.By cutting groove the air-flow of steam can be cut open come, so that a part of steam will not
Directly impinge in movable vane piece so that the erosion resistant effect of movable vane piece is preferable.
Therefore, the blade angle that the utility model is set is best angle so that the erosion that movable vane piece is subject to when rotated
It is smaller, therefore service life is longer, when can use in first pressure level, production cost is relatively low, simple and reasonable for structure.
Brief description of the drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model；
Accompanying drawing 2 is Fig. 1 A-A cross-sectional views；
Accompanying drawing 3 is Fig. 1 B-B cross-sectional views；
Accompanying drawing 4 is Fig. 1 C-C cross-sectional views；
Accompanying drawing 5 is a kind of structural representation of the utility model guiding gutter；
Accompanying drawing 6 is a kind of structural representation of the utility model protuberance.
Parts, position and numbering in figure：Blade body 1, groove 2, breach 3, guiding gutter 4, protuberance 5, cutting groove 6,
Fin 7.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：A kind of marine turbing erosion resistance movable vane piece of this example, as shown in Figure 1, Figure 2, including blade body 1, blade
The on both sides of the middle of body is provided with groove 2, and the bottom of blade body is provided with breach 3, and such as Fig. 3, the section on the top of blade body is
Crescent, and the line at crescent moon both ends and the angle α of plane are 12 °, and such as Fig. 4, the section of blade body indentation, there is inclination
The quadrangle of setting.Such as Fig. 5, the bottom surface of blade body is provided with guiding gutter 4, and the width of the bottom surface of guiding gutter is less than its opening width
Degree.Such as Fig. 6, the upper end of groove is provided with protuberance 5, and the outer surface of protuberance is provided with cutting groove 6, and cutting groove is triangle, in it
Provided with fin 7.
In use, the utility model is encased in the rotor of steam turbine.
Specific embodiment of the utility model is the foregoing is only, but architectural feature of the present utility model is not limited to
This, any those skilled in the art in field of the present utility model, all cover in this practicality newly by the change or modification made
Among the scope of the claims of type.
Claims (3)
1. a kind of marine turbing erosion resistance movable vane piece, including blade body（1）, it is characterised in that described blade body（1）
On both sides of the middle be provided with groove（2）, the bottom of blade body is provided with breach（3）, the section on the top of blade body is crescent,
And the line at crescent moon both ends and the angle α of plane are 10-14 °, and the section of blade body indentation, there is four sides being obliquely installed
Shape.
A kind of 2. marine turbing erosion resistance movable vane piece according to claim 1, it is characterised in that described blade body
（1）Bottom surface be provided with guiding gutter（4）, the width of the bottom surface of guiding gutter is less than its A/F.
A kind of 3. marine turbing erosion resistance movable vane piece according to claim 1 or 2, it is characterised in that described groove
（2）Upper end be provided with protuberance（5）, the outer surface of protuberance is provided with cutting groove（6）, cutting groove is triangle, and it is interior provided with convex
Rib（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720509145.3U CN206707771U (en) | 2017-05-09 | 2017-05-09 | A kind of marine turbing erosion resistance movable vane piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720509145.3U CN206707771U (en) | 2017-05-09 | 2017-05-09 | A kind of marine turbing erosion resistance movable vane piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206707771U true CN206707771U (en) | 2017-12-05 |
Family
ID=60465744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720509145.3U Expired - Fee Related CN206707771U (en) | 2017-05-09 | 2017-05-09 | A kind of marine turbing erosion resistance movable vane piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206707771U (en) |
-
2017
- 2017-05-09 CN CN201720509145.3U patent/CN206707771U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171205 Termination date: 20200509 |