CN217380782U - Structure for preventing runner chamber from being damaged by scouring - Google Patents
Structure for preventing runner chamber from being damaged by scouring Download PDFInfo
- Publication number
- CN217380782U CN217380782U CN202220610648.0U CN202220610648U CN217380782U CN 217380782 U CN217380782 U CN 217380782U CN 202220610648 U CN202220610648 U CN 202220610648U CN 217380782 U CN217380782 U CN 217380782U
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- China
- Prior art keywords
- distribution ring
- water distribution
- ring pipe
- nozzle
- water
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- 238000009991 scouring Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 160
- 239000011150 reinforced concrete Substances 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims 2
- 239000004567 concrete Substances 0.000 description 9
- 238000005406 washing Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
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Classifications
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- 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
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- Hydraulic Turbines (AREA)
Abstract
The utility model belongs to the technical field of impulse turbine, in particular to avoid runner room to erode structure of damage. The technical scheme is as follows: the utility model provides an avoid runner room to erode structure of damaging, includes the runner room lining, is connected with the water distribution ring canal on the runner room lining, and the other end of water distribution ring canal is connected with the nozzle, is connected with efflux protection baffle on the nozzle, is connected with on the water distribution ring canal to be used for blockking from the water distribution ring canal protection board of efflux protection baffle reflection rivers. The utility model provides a structure for avoiding runner chamber to erode and damage.
Description
Technical Field
The utility model belongs to the technical field of impulse turbine, in particular to avoid runner room to erode structure of damage.
Background
The inside of the runner chamber of the impulse turbine is gas-liquid two-phase flow, and no clear boundary line exists between the fluids. The inside of the runner chamber also comprises metal structural parts with complicated geometrical structures such as a nozzle and the like. The computer fluid simulation calculation software is huge in calculation amount, and is usually mainly focused on hydraulic calculation of important flow passage components such as a runner, and model experiments are focused on the components.
The metal structural components inside the runner chamber are generally designed according to the traditional arrangement scheme. Therefore, the influence of the changed component structure on water flow or unreasonable water flow reflection to cause the low efficiency of the unit can be avoided. As shown in figure 5, the traditional arrangement mode that the outlet flange of the water distribution ring pipe is directly connected with the nozzle flange is simple in connection, additional structural parts are not added, and water flow is prevented from being influenced.
However, the high-speed concentrated water flow from the jet flow protection baffle can erode and wear the lining of the runner chamber, and in a high-sediment power station, the water flow can continuously erode and wear the lining of the runner chamber, and after the metal lining is worn, the water flow can continuously erode the reinforced concrete foundation of the water distribution ring pipe, so that the water distribution ring pipe is displaced, and the safety of the pressure-bearing part of the water distribution ring pipe is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a structure for avoiding the runner chamber to erode and damage.
The utility model discloses the technical scheme who adopts does:
the utility model provides a avoid runner room to erode structure of damaging, includes the runner room lining, is connected with the water distribution ring canal on the runner room lining, and the other end of water distribution ring canal is connected with the nozzle, is connected with efflux protection baffle on the nozzle, is connected with on the water distribution ring canal to be used for blockking from the water distribution ring canal protection shield that efflux protection baffle reflected rivers.
When high-pressure water flow in the water distribution ring pipe flows through the nozzle, the high-pressure water flow is converted into high-speed jet flow at the nozzle opening, the outlet of the nozzle is at standard atmospheric pressure, and in a high-water-head power station, if the water pressure in the water distribution ring pipe is 10Mpa, the flow speed of the water spray opening is close to 150 m/s. The jet flow can reach the outer surface of the nozzle after passing through other parts, and a jet flow protective baffle is arranged on the nozzle in order to avoid the influence of water flow on the jet flow of the nozzle opening. The water flow after the water flow is reflected by the jet flow protection baffle can be blocked by the water distribution ring pipe protection plate, so that the water flow is prevented from scouring the lining of the runner chamber and the concrete of the water distribution ring pipe foundation, and the structure safety is ensured. Moreover, the arrangement of the water distribution ring pipe protection plate can not influence the conditions of water outflow and water turbine efficiency.
As the utility model discloses a preferred scheme, the water distribution ring canal passes through flange joint with the nozzle, and water distribution ring canal protection shield is connected on the flange of water distribution ring canal. The outlet flange of the water distribution ring pipe is directly connected with the nozzle flange, so that the connection is simple, additional structural parts are not added, and the influence on water flow is avoided.
As the preferred scheme of the utility model, the shape of water distribution ring canal protection shield is fan-shaped. The fan-shaped water distribution ring pipe protection plate can block water flow in a corresponding area, so that the water flow is prevented from washing the lining of the runner chamber and the concrete of the water distribution ring pipe foundation.
As the preferred scheme of the utility model, efflux protection baffle and water distribution ring canal protection shield are located the same side of nozzle. The water flow reflected by the jet flow protection baffle can reach the water distribution ring pipe protection plate on the same side, so that the water distribution ring pipe protection plate can fully block the water flow.
As the preferred scheme of the utility model, the shape of water distribution ring canal protection shield is tubaeform. The flared water distribution ring pipe protection plate can block water flow from all directions, and high-speed water flow is prevented from directly washing the lining of the runner chamber and the concrete of the water distribution ring pipe foundation.
As the utility model discloses a preferred scheme, one side that the nozzle was kept away from to runner room lining sets up water distribution ring canal reinforced concrete basis, and the one end that the nozzle was kept away from to the water distribution ring canal inserts in water distribution ring canal reinforced concrete basis, and the one end that the nozzle was kept away from to water distribution ring canal protection shield inserts in water distribution ring canal reinforced concrete basis after passing runner room lining. The water distribution ring pipe and the water distribution ring pipe protection plate are inserted into the water distribution ring pipe reinforced concrete foundation, and reliable connection is guaranteed.
As the preferred scheme of the utility model, the tip of water distribution ring canal protection shield and the flange joint of water distribution ring canal.
The utility model has the advantages that:
the utility model discloses a water distribution ring canal protection shield can block the rivers of efflux protection baffle reflection, avoids rivers to erode runner room lining and water distribution ring canal basis concrete, guarantees structure safety. Moreover, the arrangement of the water distribution ring pipe protection plate can not influence the conditions of water outflow and water turbine efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention in embodiment 1;
FIG. 2 is a view from the direction A-A in FIG. 1;
FIG. 3 is a schematic structural view of the present invention in example 2;
FIG. 4 is a view from the direction B-B in FIG. 3;
fig. 5 is a schematic diagram of a prior art structure.
In the figure: 1-jet flow protection baffle; 2-a nozzle; 3-water distribution ring pipe protection plate; 4-water distribution ring pipe; 5-lining of the runner chamber; 6-water distribution ring pipe foundation concrete.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
Example 1:
as shown in fig. 1 and fig. 2, the structure for preventing the runner chamber from being damaged by washing comprises a runner chamber lining 5, a water distribution ring pipe 4 is connected to the runner chamber lining 5, the other end of the water distribution ring pipe 4 is connected with a nozzle 2, a jet protection baffle plate 1 is connected to the nozzle 2, and a water distribution ring pipe protection plate 3 for blocking water flow reflected from the jet protection baffle plate 1 is connected to the water distribution ring pipe 4.
When the high-pressure water flow in the water distribution ring pipe 4 flows through the nozzle 2, the high-pressure water flow is converted into high-speed jet flow at the nozzle 2, the outlet of the nozzle 2 has standard atmospheric pressure, and in a high-water-head power station, if the water pressure in the water distribution ring pipe 4 is 10Mpa, the flow speed of a water spray opening is close to 150 m/s. The jet flow reaches the outer surface of the nozzle 2 after passing through other parts, and in order to avoid the influence of the water flow on the jet flow of the nozzle 2, a jet flow protective baffle plate 1 is arranged on the nozzle 2. The rivers after the reflection of efflux protection baffle 1 can be blockked by water distribution ring canal protection shield 3, avoid rivers to wash runner room lining 5 and 4 basic concrete of water distribution ring canal, guarantee structure safety. Moreover, the arrangement of the water distribution ring pipe protection plate 3 can not influence the water outflow flow and the efficiency of the water turbine.
The water distribution ring pipe 4 is connected with the nozzle 2 through a flange, and the water distribution ring pipe protection plate 3 is connected to the flange of the water distribution ring pipe 4. The outlet flange of the water distribution ring pipe 4 is directly connected with the flange of the nozzle 2, the connection is simple, no additional structural part is added, and the influence on water flow is avoided.
Specifically, the water distribution ring pipe protection plate 3 is in a horn shape. The small end of the water distribution ring pipe protection plate 3 is connected with the flange of the water distribution ring pipe 4. The flared water distribution ring pipe protection plate 3 can stop water flow from all directions, and the high-speed water flow is prevented from directly washing the basic concrete of the runner chamber lining 5 and the water distribution ring pipe 4.
One side of the runner chamber lining 5, which is far away from the nozzle 2, is provided with a water distribution ring pipe reinforced concrete foundation 6, one end of the water distribution ring pipe 4, which is far away from the nozzle 2, is inserted into the water distribution ring pipe reinforced concrete foundation 6, and one end of the water distribution ring pipe protection plate 3, which is far away from the nozzle 2, is inserted into the water distribution ring pipe reinforced concrete foundation 6 after penetrating through the runner chamber lining 5. And the water distribution ring pipe 4 and the water distribution ring pipe protection plate 3 are inserted into the water distribution ring pipe reinforced concrete foundation 6, so that reliable connection is ensured. The water distribution ring pipe protection plate 3 extends to the inside of the water distribution ring pipe reinforced concrete foundation 6, so that the rigidity of a cantilever part is improved, and the bending stress of a pipe joint is reduced.
Example 2:
as shown in fig. 3 and 4, the structure for preventing the runner chamber from being damaged by washing comprises a runner chamber lining 5, a water distribution ring pipe 4 is connected to the runner chamber lining 5, the other end of the water distribution ring pipe 4 is connected with a nozzle 2, a jet protection baffle plate 1 is connected to the nozzle 2, and a water distribution ring pipe protection plate 3 for blocking water flow reflected from the jet protection baffle plate 1 is connected to the water distribution ring pipe 4.
When the high-pressure water flow in the water distribution ring pipe 4 flows through the nozzle 2, the high-pressure water flow is converted into high-speed jet flow at the nozzle 2, the outlet of the nozzle 2 has standard atmospheric pressure, and in a high-water-head power station, if the water pressure in the water distribution ring pipe 4 is 10Mpa, the flow speed of a water spray opening is close to 150 m/s. The jet flow reaches the outer surface of the nozzle 2 after passing through other parts, and in order to avoid the influence of the water flow on the jet flow of the nozzle 2, a jet flow protective baffle plate 1 is arranged on the nozzle 2. The rivers after the reflection of efflux protection baffle 1 can be blockked by water distribution ring canal protection shield 3, avoid rivers to wash runner room lining 5 and 4 basic concrete of water distribution ring canal, guarantee structure safety. Moreover, the arrangement of the water distribution ring pipe protection plate 3 can not influence the water outflow flow and the efficiency of the water turbine.
The water distribution ring pipe 4 is connected with the nozzle 2 through a flange, and the water distribution ring pipe protection plate 3 is connected to the flange of the water distribution ring pipe 4. An outlet flange of the water distribution ring pipe 4 is directly connected with a flange of the nozzle 2, so that the connection is simple, an additional structural part is not added, and the influence on water flow is avoided.
Specifically, the water distribution ring pipe protection plate 3 is fan-shaped. The fan-shaped water distribution ring pipe protection plate 3 can block water flow in the corresponding area, so that the water flow is prevented from washing the basic concrete of the runner chamber lining 5 and the water distribution ring pipe 4.
The jet protection baffle 1 and the distribution ring pipe protection plate 3 are positioned on the same side of the nozzle 2. The water flow reflected by the jet flow protection baffle 1 can reach the water distribution ring pipe protection plate 3 on the same side, so that the water distribution ring pipe protection plate 3 can fully block the water flow.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (7)
1. The utility model provides an avoid runner room to erode structure of damaging which characterized in that: the water distributor comprises a runner chamber lining (5), wherein a water distribution ring pipe (4) is connected to the runner chamber lining (5), the other end of the water distribution ring pipe (4) is connected with a nozzle (2), a jet flow protection baffle (1) is connected to the nozzle (2), and a water distribution ring pipe protection plate (3) used for blocking water flow reflected from the jet flow protection baffle (1) is connected to the water distribution ring pipe (4).
2. A structure for preventing a runner chamber from being washed and damaged according to claim 1, wherein: the water distribution ring pipe (4) is connected with the nozzle (2) through a flange, and the water distribution ring pipe protection plate (3) is connected to the flange of the water distribution ring pipe (4).
3. A structure for preventing a runner chamber from being washed and damaged according to claim 2, wherein: the water distribution ring pipe protection plate (3) is fan-shaped.
4. A structure for preventing a runner chamber from being washed and damaged according to claim 3, wherein: the jet flow protection baffle (1) and the water distribution ring pipe protection plate (3) are positioned on the same side of the nozzle (2).
5. A structure for preventing a runner chamber from being washed and damaged according to claim 2, wherein: the shape of the water distribution ring pipe protection plate (3) is horn-shaped.
6. The structure for avoiding the flushing damage of the runner chamber, according to claim 5, wherein: one side of the runner chamber lining (5) far away from the nozzle (2) is provided with a water distribution ring pipe reinforced concrete foundation (6), one end of the water distribution ring pipe (4) far away from the nozzle (2) is inserted into the water distribution ring pipe reinforced concrete foundation (6), and one end of the water distribution ring pipe protective plate (3) far away from the nozzle (2) penetrates through the runner chamber lining (5) and then is inserted into the water distribution ring pipe reinforced concrete foundation (6).
7. The structure for avoiding the flushing damage of the runner chamber, according to claim 5, wherein: the small end of the water distribution ring pipe protection plate (3) is connected with the flange of the water distribution ring pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220610648.0U CN217380782U (en) | 2022-03-21 | 2022-03-21 | Structure for preventing runner chamber from being damaged by scouring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220610648.0U CN217380782U (en) | 2022-03-21 | 2022-03-21 | Structure for preventing runner chamber from being damaged by scouring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217380782U true CN217380782U (en) | 2022-09-06 |
Family
ID=83101525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220610648.0U Active CN217380782U (en) | 2022-03-21 | 2022-03-21 | Structure for preventing runner chamber from being damaged by scouring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217380782U (en) |
-
2022
- 2022-03-21 CN CN202220610648.0U patent/CN217380782U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |