CN207454032U - Steam turbine high efficiency erosion resistance Frequency Adjustable turns round leaf - Google Patents
Steam turbine high efficiency erosion resistance Frequency Adjustable turns round leaf Download PDFInfo
- Publication number
- CN207454032U CN207454032U CN201721171784.XU CN201721171784U CN207454032U CN 207454032 U CN207454032 U CN 207454032U CN 201721171784 U CN201721171784 U CN 201721171784U CN 207454032 U CN207454032 U CN 207454032U
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- China
- Prior art keywords
- leaf
- steam turbine
- round leaf
- frequency adjustable
- high efficiency
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Abstract
The utility model is related to a kind of steam turbines to turn round leaf, and leaf is turned round more particularly, to a kind of steam turbine high efficiency erosion resistance Frequency Adjustable.Its turbine blade mainly present in the solution prior art is when in use since the impact force being subject to is larger, the centrifugal force born is smaller, and water conservancy diversion is ineffective, therefore service life is shorter, can not use steam turbine Frequency Adjustable turn round leaf in, production cost it is higher wait the technical issues of.The utility model includes turning round leaf body（1）, the torsion leaf body（1）Upper and lower ends be designed with a shroud（2）, polylith connecting plate is connected with positioned at the shroud lower part of lower end（3）, connecting plate is in a parallel set, and the locating slot of arc is provided on the two sides of connecting plate（4）, the middle part for turning round leaf body is equipped with the reinforcement fin arranged in a crossed manner with turning round leaf body（5）, the upper end end face generally X-type of leaf body is turned round, there are two the larger big blades of width for tool（6）And two smaller vanelets of width（7）.
Description
Technical field
The utility model is related to a kind of steam turbines to turn round leaf, is turned round more particularly, to a kind of steam turbine high efficiency erosion resistance Frequency Adjustable
Leaf.
Background technology
Steam turbine blade is mounted on turbine rotor, and generates torque under the vapor action of high temperature and pressure, 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 blade to be made to form the shroud of whole circle self-locking, blade is equipped with lacing wire boss, and the molded line of blade is variable cross-section distortion type
Line has 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
When in use since the impact force being subject to is larger, the centrifugal force born is smaller, and water conservancy diversion is ineffective, therefore service life is shorter,
It can not use in steam turbine Frequency Adjustable turns round leaf, production cost is higher.
Utility model content
The utility model is to provide a kind of steam turbine high efficiency erosion resistance Frequency Adjustable and turns round leaf, mainly solves the prior art
Existing turbine blade is larger due to the impact force being subject to when in use, and the centrifugal force born is smaller, and water conservancy diversion is ineffective,
Therefore service life it is shorter, can not use steam turbine Frequency Adjustable turn round leaf in, production cost it is higher wait the technical issues of.
The above-mentioned technical problem of the utility model is mainly what is be addressed by following technical proposals：
The steam turbine high efficiency erosion resistance Frequency Adjustable of the utility model turns round leaf, including turning round leaf body, the torsion leaf body
Upper and lower ends be designed with a shroud, be connected with polylith connecting plate positioned at the shroud lower part of lower end, connecting plate is in a parallel set,
And the locating slot of arc is provided on the two sides of connecting plate, turn round leaf body middle part be equipped with turn round leaf body it is arranged in a crossed manner plus
Strong fin turns round the upper end end face generally X-type of leaf body, and there are two the larger big blade of width and two width are smaller for tool
Vanelets.By improved blade root and double-deck shroud blade is made to bear very big centrifugal force and also larger safety
Coefficient.The external form for reducing whole steam turbine reduces the whole efficiency of materials'use increase steam turbine.Turn round the upper end end face of leaf body
Generally X-type, so into vapour and go out vapour efficiency it is all higher.
Preferably, the outer surface of the torsion leaf body is equipped with into vapour intrados, it is equipped with into the outer surface of vapour intrados
Several water conservancy diversion fins, water conservancy diversion fin are arc-shaped.Steam flow can be guided, increased into vapour efficiency by water conservancy diversion fin.
Preferably, one of them described big blade a side and the angle α of vertical plane are 22-27 ° of another big blade
The angle β of a side and vertical plane is 35-40 °.Two angles in this way, so that into vapour efficiency highest, and at the same time can reach
The degree most saved to material.
Preferably, being equipped with water conservancy diversion arc groove between the big blade and vanelets, caulking groove is equipped in water conservancy diversion arc groove,
It is equipped in caulking groove and strengthens alloy-layer.It sets and strengthens alloy-layer, it is ensured that the entire abrasion-resistance for turning round leaf prolongs the service life.
Reinforcement alloy-layer can be commercially available wear-resistant material and be made.
Therefore, the blade angle that the utility model is set as best angle, and using strengthen alloy-layer cause rotation when
The erosion being subject to is smaller, higher into vapour efficiency, therefore service life is longer, and production cost is relatively low, simple and reasonable for structure.
Description of the drawings
Attached drawing 1 is a kind of structure diagram of the utility model；
Attached drawing 2 is the side structure schematic diagram of Fig. 1；
Attached drawing 3 is the A-A cross-sectional views of Fig. 2；
Attached drawing 4 is the W of Fig. 2 to structure diagram；
Attached drawing 5 is the upper end end structure illustration of the utility model blade.
Parts, position and number in figure：Turn round leaf body 1, shroud 2, connecting plate 3, locating slot 4, reinforcement fin 5, great Ye
Piece 6, vanelets 7, into vapour intrados 8, water conservancy diversion fin 9, water conservancy diversion arc groove 10, strengthen alloy-layer 11.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：The steam turbine high efficiency erosion resistance Frequency Adjustable of this example turns round leaf, as shown in Figure 1, Figure 2, Fig. 3, Fig. 4, including turning round leaf
Body 1, the upper and lower ends for turning round leaf body are designed with a shroud 2, polylith connecting plate 3 are connected with positioned at the shroud lower part of lower end,
Connecting plate is in a parallel set, and the locating slot 4 of arc is provided on the two sides of connecting plate, and the middle part for turning round leaf body is equipped with and torsion
Leaf body reinforcement fin 5 arranged in a crossed manner turns round the upper end end face generally X-type of leaf body, and there are two larger big of width for tool
Blade 6 and the smaller vanelets 7 of two width.The outer surface for turning round leaf body is equipped with into vapour intrados 8, into the outer of vapour intrados
Surface is equipped with several water conservancy diversion fins 9, and water conservancy diversion fin is arc-shaped.Such as Fig. 5, the folder of one of them big 6 a side of blade and vertical plane
Angle α is 25 °, and the angle β of another big blade a side and vertical plane is 38 °.Water conservancy diversion circular arc is equipped between blade and vanelets greatly
Slot 10, water conservancy diversion arc groove is interior to be equipped with caulking groove, is equipped in caulking groove and strengthens alloy-layer 11.
In use, the utility model is encased in the rotor of steam turbine.
Structure feature the foregoing is merely specific embodiment of the utility model, but the utility model is not limited to
This, any those skilled in the art in the field of the utility model, all cover in this practicality newly by the variation or modification made
Among the scope of the claims of type.
Claims (4)
1. a kind of steam turbine high efficiency erosion resistance Frequency Adjustable turns round leaf, including turning round leaf body（1）, it is characterised in that the torsion leaf sheet
Body（1）Upper and lower ends be designed with a shroud（2）, polylith connecting plate is connected with positioned at the shroud lower part of lower end（3）, connecting plate
It is in a parallel set, and the locating slot of arc is provided on the two sides of connecting plate（4）, the middle part for turning round leaf body is equipped with turning round leaf sheet
Body reinforcement fin arranged in a crossed manner（5）, the upper end end face generally X-type of leaf body is turned round, there are two the larger great Ye of width for tool
Piece（6）And two smaller vanelets of width（7）.
2. steam turbine high efficiency erosion resistance Frequency Adjustable according to claim 1 turns round leaf, it is characterised in that the torsion leaf sheet
The outer surface of body is equipped with into vapour intrados（8）, several water conservancy diversion fins are equipped with into the outer surface of vapour intrados（9）, water conservancy diversion fin is
It is arc-shaped.
3. steam turbine high efficiency erosion resistance Frequency Adjustable according to claim 1 or 2 turns round leaf, it is characterised in that it is described wherein
One big blade（6）The angle α of a side and vertical plane is 22-27 °, and the angle β of another big blade a side and vertical plane is 35-
40°。
4. steam turbine high efficiency erosion resistance Frequency Adjustable according to claim 1 or 2 turns round leaf, it is characterised in that the great Ye
Piece（6）With vanelets（7）Between be equipped with water conservancy diversion arc groove（10）, water conservancy diversion arc groove is interior to be equipped with caulking groove, is equipped in caulking groove and strengthens conjunction
Layer gold（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171784.XU CN207454032U (en) | 2017-09-13 | 2017-09-13 | Steam turbine high efficiency erosion resistance Frequency Adjustable turns round leaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171784.XU CN207454032U (en) | 2017-09-13 | 2017-09-13 | Steam turbine high efficiency erosion resistance Frequency Adjustable turns round leaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207454032U true CN207454032U (en) | 2018-06-05 |
Family
ID=62282959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721171784.XU Expired - Fee Related CN207454032U (en) | 2017-09-13 | 2017-09-13 | Steam turbine high efficiency erosion resistance Frequency Adjustable turns round leaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207454032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109101722A (en) * | 2018-08-09 | 2018-12-28 | 东方电气集团东方汽轮机有限公司 | A kind of turbine blade composite molding design method |
-
2017
- 2017-09-13 CN CN201721171784.XU patent/CN207454032U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109101722A (en) * | 2018-08-09 | 2018-12-28 | 东方电气集团东方汽轮机有限公司 | A kind of turbine blade composite molding design method |
| CN109101722B (en) * | 2018-08-09 | 2022-03-22 | 东方电气集团东方汽轮机有限公司 | Composite forming design method for turbine blade |
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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 |
Granted publication date: 20180605 Termination date: 20200913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |