CN206600230U - A kind of mixed-flow water turbine runner seals structure - Google Patents
A kind of mixed-flow water turbine runner seals structure Download PDFInfo
- Publication number
- CN206600230U CN206600230U CN201621415774.1U CN201621415774U CN206600230U CN 206600230 U CN206600230 U CN 206600230U CN 201621415774 U CN201621415774 U CN 201621415774U CN 206600230 U CN206600230 U CN 206600230U
- Authority
- CN
- China
- Prior art keywords
- wall
- mixed
- lower ring
- turbine runner
- ring
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Hydraulic Turbines (AREA)
Abstract
The utility model discloses a kind of mixed-flow water turbine runner seals structure, including with blade（1）Crown（2）, in the blade（1）Bottom be provided with lower ring（3）, in the lower ring（3）Outside and the lower ring of correspondence（3）Outer wall is provided with and lower ring（3）The seal ring of cooperation（4）, in the lower ring（3）With seal ring on outer wall（4）On be provided with sealing mechanism.The utility model has the advantages that smart structural design, manufacturing cost are cheap, current are extended using it and pass through the stroke between runner and seal ring, increase the linear loss between this trip and volumetric loss, so as to obtain the effect of sealing current, make to be greatly decreased by sealed water leakage, improve the economy of power station operation.
Description
Technical field
The utility model is related to a kind of mixed-flow water turbine runner, particularly a kind of mixed-flow water turbine runner seals structure.
Background technology
At present, on mixed-flow water turbine runner, sealed frequently with non-contact type, i.e., pressure is changed using gap and volume change
Power is sealed.The reduced pressure sealing groove that a plurality of size is different is set on seal, the flowing into sealing current is increased
Stroke, while changing the volume for entering sealing current, be allowed to flow velocity and pressure reduces simultaneously, increase exclusion resistance, makes to enter close
The current of envelope reduce to play sealed effect.But, it is right because the sealing structure of the type has no active force to water (flow) direction
The sealing effectiveness of current is then relative to be weakened, and there are a large amount of drainages, meanwhile, the considerable part current that do not do work is directly discharged into tail
Water, causes the waste of unit energy, the high efficiency and economy of the operation of influence power station.
Utility model content
The purpose of this utility model is just to provide a kind of mixed-flow water turbine runner seals structure of good sealing effect.
The purpose of this utility model realized by such technical scheme, a kind of mixed-flow water turbine runner seals knot
Structure, including blade-carrying crown, lower ring is provided with the bottom of the blade, ring outer wall on the outside of the lower ring and under correspondence
The seal ring coordinated with lower ring is provided with, with being provided with sealing mechanism on seal ring on the lower ring outer wall.
Wherein, the sealing mechanism can be labyrinth seal；The sealing sealing includes the fan being arranged on lower ring outer wall
The palace water channel A and labyrinth water channel B being arranged on seal ring outer wall, the sealing water channel A include the multiple tank A be arrangeding in parallel,
The sealing water channel B includes the multiple tank B be arrangeding in parallel, and the tank A is corresponding one by one with tank B, and tank A and tank
There is gap between B.
Wherein, sealing mechanism can also be stepped sealed；The stepped sealed seam including being arranged on lower ring outer wall
With the step being arranged on seal ring outer wall, the seam and the step are engaged, and have gap between seam and step.
Certainly, the sealing mechanism can also be labyrinth seal；The labyrinth seal includes being arranged on lower ring outer wall lower end
The groove in face and the boss being arranged on seal ring outer wall, the boss are stretched into the groove and fit depressions, described convex
There is gap between platform and groove.
By adopting the above-described technical solution, the utility model has the advantages that smart structural design, manufacturing cost are cheap,
Current are extended by the stroke between runner and seal ring using it, increase the linear loss between this trip and volumetric loss, from
And the effect of sealing current is obtained, make to be greatly decreased by sealed water leakage, improve the economy of power station operation.
Brief description of the drawings
Brief description of the drawings of the present utility model is as follows：
Fig. 1 is the first structural representation of the present utility model；
Fig. 2 is second of structural representation of the present utility model；
Fig. 3 is the third structural representation of the present utility model.
Embodiment
Embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings, but the utility model
These embodiments are not limited to, any improvement or replacement on the present embodiment essence spirit still falls within the utility model
Claim scope claimed.
Embodiment 1：As shown in figure 1, a kind of mixed-flow water turbine runner seals structure, including the crown 2 with blade 1,
The bottom of the blade 1 is provided with lower ring 3, and the outer wall of ring 3 is provided with what is coordinated with lower ring 3 under the lower outside of ring 3 and correspondence
Seal ring 4, with being provided with sealing mechanism on seal ring 4 on the lower outer wall of ring 3.
Wherein, the sealing mechanism is labyrinth seal；The sealing sealing includes the labyrinth water being arranged on the lower outer wall of ring 3
The road A and labyrinth water channel B being arranged on the outer wall of seal ring 4, the sealing water channel A include the multiple tank A5 be arrangeding in parallel, institute
Multiple tank B6 that sealing water channel B includes be arrangeding in parallel are stated, the tank A5 is corresponding one by one with tank B6, and tank A5 and water
There is gap between groove B6.
Embodiment 2：As shown in Fig. 2 the sealing mechanism is stepped sealed；It is described stepped sealed including being arranged on lower ring 3
Seam 7 and the step 8 being arranged on the outer wall of seal ring 4 on outer wall, the seam 7 and the step 8 are engaged, and seam 7
There is gap between step 8.
Embodiment 3：As shown in figure 3, the sealing mechanism is labyrinth seal；The labyrinth seal includes being arranged on lower ring 3
The groove 9 of outer wall lower surface and the boss 10 being arranged on the outer wall of seal ring 4, the boss 10 stretch into the groove 9 with it is recessed
Groove 9 is engaged, and has gap between the boss 10 and groove 9.
In the utility model, current can be extended by the stroke between runner and seal ring by sealing mechanism, increased
Current can be formed powerful resistance by linear loss and volumetric loss between big this trip, are prevented the entrance of current and are quickly led to
Cross, the leak do not done work is greatly decreased, so as to strengthen the effect effect of sealing current.
Claims (7)
1. a kind of mixed-flow water turbine runner seals structure, including with blade（1）Crown（2）, in the blade（1）Bottom
It is provided with lower ring（3）, in the lower ring（3）Outside and the lower ring of correspondence（3）Outer wall is provided with and lower ring（3）The seal ring of cooperation
（4）, it is characterized in that：In the lower ring（3）With seal ring on outer wall（4）On be provided with sealing mechanism.
2. mixed-flow water turbine runner seals structure as claimed in claim 1, it is characterized in that：The sealing mechanism is that labyrinth is close
Envelope.
3. mixed-flow water turbine runner seals structure as claimed in claim 2, it is characterized in that：The sealing sealing includes being arranged on
Lower ring（3）The labyrinth water channel A and labyrinth water channel B being arranged on the outer wall of seal ring 4 on outer wall, the sealing water channel A includes flat
Multiple tank A that row is set（5）, it is described to seal multiple tank B that water channel B includes be arrangeding in parallel（6）, the tank A（5）With water
Groove B（6）It is corresponding one by one, and tank A（5）With tank B（6）Between have gap.
4. mixed-flow water turbine runner seals structure as claimed in claim 1, it is characterized in that：The sealing mechanism is that ladder is close
Envelope.
5. mixed-flow water turbine runner seals structure as claimed in claim 4, it is characterized in that：It is described stepped sealed including being arranged on
Lower ring（3）Seam 7 on outer wall and it is arranged on seal ring（4）Step on outer wall（8）, the seam（7）With the step（8）
It is engaged, and seam（7）With step（8）Between have gap.
6. mixed-flow water turbine runner seals structure as claimed in claim 1, it is characterized in that：The sealing mechanism is that broach is close
Envelope.
7. mixed-flow water turbine runner seals structure as claimed in claim 6, it is characterized in that：The labyrinth seal includes being arranged on
Lower ring（3）The groove of outer wall lower surface（9）Be arranged on seal ring（4）Boss on outer wall（10）, the boss（10）Stretch into
The groove（9）Interior and groove（9）It is engaged, the boss（10）With groove（9）Between have gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621415774.1U CN206600230U (en) | 2016-12-22 | 2016-12-22 | A kind of mixed-flow water turbine runner seals structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621415774.1U CN206600230U (en) | 2016-12-22 | 2016-12-22 | A kind of mixed-flow water turbine runner seals structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206600230U true CN206600230U (en) | 2017-10-31 |
Family
ID=60148383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621415774.1U Expired - Fee Related CN206600230U (en) | 2016-12-22 | 2016-12-22 | A kind of mixed-flow water turbine runner seals structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206600230U (en) |
-
2016
- 2016-12-22 CN CN201621415774.1U patent/CN206600230U/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 |
Granted publication date: 20171031 |