CN207177977U - The steam turbine high efficiency high life turns round leaf - Google Patents
The steam turbine high efficiency high life turns round leaf Download PDFInfo
- Publication number
- CN207177977U CN207177977U CN201721172365.8U CN201721172365U CN207177977U CN 207177977 U CN207177977 U CN 207177977U CN 201721172365 U CN201721172365 U CN 201721172365U CN 207177977 U CN207177977 U CN 207177977U
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- China
- Prior art keywords
- leaf
- steam turbine
- turns round
- leaf body
- intrados
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- Expired - Fee Related
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Abstract
It the utility model is related to a kind of steam turbine and turn round leaf, leaf is turned round more particularly, to a kind of steam turbine high efficiency high life.Its turbine blade for mainly solving present in prior art is more not easy when in use because the impulsive force received is larger, during steering, and wearability is poor, water conservancy diversion is ineffective, therefore service life is shorter, can not use in steam turbine turns round leaf, the technical problem of the higher grade of production cost.The utility model includes turning round leaf body（1）, described torsion leaf body（1）Bottom be provided with connector（2）, mounting hole is provided with connector（3）, the crescent that leaf body generally reverses is turned round, the outer surface for turning round leaf body is provided with into vapour intrados（4）, enter vapour intrados indent and its top and bottom be all inclined-plane, the inclined-plane angle α for entering vapour intrados bottom is 10 15 °, enters and zigzag caulking groove is provided with the edge air intake of vapour intrados（5）, caulking groove is interior to be embedded with reinforcement alloy-layer（6）.
Description
Technical field
It the utility model is related to a kind of steam turbine and turn round leaf, leaf is turned round more particularly, to a kind of steam turbine high efficiency high life.
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 turbine blade
More it is not easy when in use because the impulsive force received is larger, during steering, wearability is poor, and water conservancy diversion is ineffective, therefore uses
Life-span is shorter, can not use in steam turbine turns round leaf, production cost is higher.
Utility model content
The utility model is to provide a kind of steam turbine high efficiency high life torsion leaf, and it is mainly solved present in prior art
Turbine blade be more not easy when in use because the impulsive force received is larger, during steering, wearability is poor, water conservancy diversion effect
It is bad, therefore service life is shorter, can not use in steam turbine turns round leaf, 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：
The steam turbine high efficiency high life of the present utility model turns round leaf, including turns round leaf body, the bottom of described torsion leaf body
Provided with connector, mounting hole is provided with connector, turns round the crescent that leaf body generally reverses, the outer surface for turning round leaf body is provided with
Enter vapour intrados, enter vapour intrados indent and its top and bottom is all inclined-plane, the inclined-plane angle α for entering vapour intrados bottom is 10-
15 °, enter and zigzag caulking groove is provided with the edge air intake of vapour intrados, embedded with reinforcement alloy-layer in caulking groove.Connector can
For each torsion leaf body is fixed together with first stator, last stator, to ensure the fastness of connection, set groove can be significantly
Material therefor is reduced, saves production cost.Vapour can be directed into by entering vapour intrados, and blade profile of the present utility model makes steam flow more suitable
Freely, laser alloying is carried out at the top of leading edge leaf and greatly improves blade whole service life.Set and strengthen alloy-layer, it is ensured that
Enter abrasion-resistance during vapour, increase the service life.It can be made of commercially available high-abrasive material to strengthen alloy-layer.
Preferably, the described outer surface for entering vapour intrados is provided with some water conservancy diversion fins, water conservancy diversion fin spirality row
Cloth.Steam flow can be guided, increased into vapour efficiency by water conservancy diversion fin.
Preferably, the side of described torsion leaf body is inclined-plane, the angle of itself and vertical plane is 5-10 °.Set inclined-plane can
To be preferably directed into vapour, angle most preferably can be 6 °.
Preferably, described connector position is provided with deflector, deflector is provided with trapezoidal guiding gutter.Deflector not only may be used
To play the intensity for strengthening junction, moreover it is possible to have the effect of water conservancy diversion.
Therefore, the blade angle that the utility model is set is best angle, and using strengthening alloy-layer so that steering is led
The erosion that leaf is subject to when rotated is smaller, and it is higher to enter vapour efficiency, therefore service life is longer, and production cost is relatively low, simple in construction,
Rationally.
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 side structure schematic diagram；
Accompanying drawing 3 is Fig. 1 overlooking the structure diagram.
Parts, position and numbering in figure：Turn round leaf body 1, connector 2, mounting hole 3, enter vapour intrados 4, caulking groove 5 plus
Strong alloy-layer 6, water conservancy diversion fin 7, deflector 8, trapezoidal guiding gutter 9.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：Steam turbine high efficiency high life of this example turns round leaf, as shown in Figure 1, Figure 2, Fig. 3, including turns round leaf body 1, turns round leaf
The bottom of body is provided with connector 2, and mounting hole 3 is provided with connector, and the outer surface for turning round leaf body is provided with into vapour intrados 4, is entered
Vapour intrados indent and its top and bottom is all inclined-plane, the inclined-plane angle α for entering vapour intrados bottom is 10-15 °, enters vapour intrados
Edge air intake at be provided with zigzag caulking groove 5, embedded with strengthening alloy-layer 6 in caulking groove.The outer surface for entering vapour intrados is set
There are some water conservancy diversion fins 7, the arrangement of water conservancy diversion fin spirality.The side for turning round leaf body is inclined-plane, and the angle of itself and vertical plane is 5-
10°.Connector position is provided with deflector 8, and deflector is provided with trapezoidal guiding gutter 9.
Used time, 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 (4)
1. a kind of steam turbine high efficiency high life turns round leaf, including turns round leaf body（1）, it is characterised in that described torsion leaf body（1）
Bottom be provided with connector（2）, mounting hole is provided with connector（3）, the crescent that leaf body generally reverses is turned round, turns round leaf body
Outer surface be provided with into vapour intrados（4）, enter vapour intrados indent and its top and bottom be all inclined-plane, enter vapour intrados bottom
Inclined-plane angle α is 10-15 °, enters and zigzag caulking groove is provided with the edge air intake of vapour intrados（5）, in caulking groove embedded with plus
Strong alloy-layer（6）.
2. the steam turbine high efficiency high life according to claim 1 turns round leaf, it is characterised in that described enters vapour intrados（4）
Outer surface be provided with some water conservancy diversion fins（7）, the arrangement of water conservancy diversion fin spirality.
3. the steam turbine high efficiency high life according to claim 1 or 2 turns round leaf, it is characterised in that described torsion leaf body
（1）Side be inclined-plane, the angle of itself and vertical plane is 5-10 °.
4. the steam turbine high efficiency high life according to claim 1 or 2 turns round leaf, it is characterised in that described connector（2）
Place is provided with deflector（8）, deflector is provided with trapezoidal guiding gutter（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721172365.8U CN207177977U (en) | 2017-09-13 | 2017-09-13 | The steam turbine high efficiency high life turns round leaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721172365.8U CN207177977U (en) | 2017-09-13 | 2017-09-13 | The steam turbine high efficiency high life turns round leaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207177977U true CN207177977U (en) | 2018-04-03 |
Family
ID=61746237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721172365.8U Expired - Fee Related CN207177977U (en) | 2017-09-13 | 2017-09-13 | The steam turbine high efficiency high life turns round leaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207177977U (en) |
-
2017
- 2017-09-13 CN CN201721172365.8U patent/CN207177977U/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: 20180403 Termination date: 20200913 |