CN207568662U - Steam turbine is adjustable steam flow nozzle vane - Google Patents
Steam turbine is adjustable steam flow nozzle vane Download PDFInfo
- Publication number
- CN207568662U CN207568662U CN201721171172.0U CN201721171172U CN207568662U CN 207568662 U CN207568662 U CN 207568662U CN 201721171172 U CN201721171172 U CN 201721171172U CN 207568662 U CN207568662 U CN 207568662U
- Authority
- CN
- China
- Prior art keywords
- vapour
- blade body
- blade
- steam turbine
- nozzle vane
- 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
The utility model is related to a kind of turbine blade, more particularly, to a kind of adjustable steam flow nozzle vane of steam turbine.Its turbine blade mainly present in the solution prior art is when in use since the impact force being subject to is larger, and steam flow adjusting is more not easy, and wearability is poor, it is ineffective to spray vapour, therefore service life it is shorter, can not use in nozzle of steam turbine blade, production cost it is higher wait the technical issues of.The utility model includes blade body（1）, the blade body（1）One end is equipped with connector（2）, connection head width is more than blade body width, and the height h of blade body is 28 32mm, and the outer surface of blade body is equipped with into vapour intrados（3）, the outer surface of connector is equipped with into vapour face（4）, the vapour angle that enters for entering vapour face is 18 22 °.
Description
Technical field
The utility model is related to a kind of turbine blade, more particularly, to a kind of adjustable steam flow nozzle vane of steam turbine.
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, steam flow adjusting is more not easy, and wearability is poor, and spray vapour is ineffective, therefore makes
It is shorter with the service life, it can not use in nozzle of steam turbine blade, production cost is higher.
Utility model content
The utility model is to provide a kind of adjustable steam flow nozzle vane of steam turbine, mainly solves present in the prior art
Turbine blade when in use since the impact force being subject to is larger, steam flow adjusting be more not easy, wearability is poor, spray vapour effect
It is bad, therefore service life is shorter, can not use in nozzle of steam turbine blade, production cost higher the technical issues of waiting.
The above-mentioned technical problem of the utility model is mainly what is be addressed by following technical proposals：
The adjustable steam flow nozzle vane of steam turbine of the utility model, including blade body, described blade body one end is set
There is a connector, connection head width is more than blade body width, and the height h of blade body is 28-32mm, the outer surface of blade body
Equipped with being equipped with into the outer surface of vapour intrados, connector into vapour face, the vapour angle that enters for entering vapour face is 18-22 °.It is smaller enter vapour angle,
Greatly reduce steam flow with practical completely the same leaf height and enter the loss before turning to guide vane.
Preferably, the outer surface into vapour intrados is equipped with several water conservancy diversion fins, water conservancy diversion fin is helically arranged
Cloth.Water conservancy diversion fin is helically arranged.Steam flow can be guided, increased into vapour efficiency by water conservancy diversion fin.
Preferably, the edge into vapour intrados is equipped with zigzag caulking groove, it is embedded in caulking groove and strengthens alloy
Layer.Put reinforcement alloy-layer, it is ensured that abrasion-resistance during into vapour prolongs the service life.Strengthening alloy-layer can be commercially available
Wear-resistant material is made.
Preferably, the side of the blade body is inclined-plane, the angle α with vertical plane is 2-5 °.Set inclined-plane can
To be preferably directed into vapour, angle α most preferably can be 3.4 °.
Therefore, the utility model setting blade height and enter vapour angle all for optimal parameter set, and using strengthen close
Layer gold so that the erosion that nozzle vane is subject to when rotated is smaller, higher into vapour efficiency, therefore service life is longer, production cost
It is relatively low, it is 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 A of Fig. 1 to structure diagram；
Attached drawing 3 is the B-B cross-sectional views of Fig. 1.
Parts, position and number in figure：Blade body 1, connector 2, into vapour intrados 3, enter vapour face 4, water conservancy diversion fin
5th, caulking groove 6, reinforcement alloy-layer 7.
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 adjustable steam flow nozzle vane of steam turbine of this example, as shown in Figure 1, Figure 2, Fig. 3, including blade body 1, blade
Ontology one end is equipped with connector 2, and connection head width is more than blade body width, and the height h of blade body is 30mm, blade body
Outer surface be equipped with into vapour intrados 3, the outer surface of connector is equipped with into vapour face 4, and enter vapour face enters vapour angle for 20 °.Into in vapour
The outer surface of cambered surface is equipped with several water conservancy diversion fins 5, and water conservancy diversion fin is helically arranged.Zigzag is equipped with into the edge of vapour intrados
Caulking groove 6, embedded with strengthening alloy-layer 7 in caulking groove.The side of blade body is inclined-plane, and the angle α with vertical plane is 3.4 °.
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 adjustable steam flow nozzle vane of steam turbine, including blade body（1）, it is characterised in that the blade body（1）
One end is equipped with connector（2）, connection head width is more than blade body width, and the height h of blade body is 28-32mm, blade sheet
The outer surface of body is equipped with into vapour intrados（3）, the outer surface of connector is equipped with into vapour face（4）, enter vapour face enters vapour angle for 18-
22°。
2. the adjustable steam flow nozzle vane of steam turbine according to claim 1, it is characterised in that described into vapour intrados（3）
Outer surface be equipped with several water conservancy diversion fins（5）, water conservancy diversion fin helically arranges.
3. the adjustable steam flow nozzle vane of steam turbine according to claim 1 or 2, it is characterised in that described into vapour intrados
（3）Edge be equipped with zigzag caulking groove（6）, caulking groove is interior to be embedded with reinforcement alloy-layer（7）.
4. the adjustable steam flow nozzle vane of steam turbine according to claim 1 or 2, it is characterised in that the blade body
（1）Side for inclined-plane, the angle α with vertical plane is 2-5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171172.0U CN207568662U (en) | 2017-09-13 | 2017-09-13 | Steam turbine is adjustable steam flow nozzle vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171172.0U CN207568662U (en) | 2017-09-13 | 2017-09-13 | Steam turbine is adjustable steam flow nozzle vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207568662U true CN207568662U (en) | 2018-07-03 |
Family
ID=62697210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721171172.0U Expired - Fee Related CN207568662U (en) | 2017-09-13 | 2017-09-13 | Steam turbine is adjustable steam flow nozzle vane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207568662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617117A (en) * | 2019-08-02 | 2019-12-27 | 中国航发贵阳发动机设计研究所 | Method for adjusting throat area of turbine guider |
-
2017
- 2017-09-13 CN CN201721171172.0U patent/CN207568662U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617117A (en) * | 2019-08-02 | 2019-12-27 | 中国航发贵阳发动机设计研究所 | Method for adjusting throat area of turbine guider |
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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: 20180703 Termination date: 20200913 |