CN109577292B - Energy dissipation runner structure for reducing flow velocity - Google Patents
Energy dissipation runner structure for reducing flow velocity Download PDFInfo
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- CN109577292B CN109577292B CN201811592428.4A CN201811592428A CN109577292B CN 109577292 B CN109577292 B CN 109577292B CN 201811592428 A CN201811592428 A CN 201811592428A CN 109577292 B CN109577292 B CN 109577292B
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- runner
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- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses an energy dissipation runner structure for reducing flow velocity, which comprises a runner hole, wherein a runner surface is arranged on the runner hole, one end of the runner surface is provided with a runner inlet, the other end of the runner surface is provided with a runner outlet, and a hump weir is arranged on the runner surface. By adopting the technical scheme of the invention, the plurality of humps of different shapes, heights and sizes are arranged on the flow passage surface, and the humps are staggered on the flow passage surface, so that after fluid flows through the humps, the fluid state disturbance phenomenon is kept, the hydraulic condition is improved, meanwhile, the flow section is suddenly contracted and suddenly expanded due to the humps, the energy loss of water flow is increased, the purposes of reducing the flow speed, adjusting the streamline and the flow state are achieved, the cavitation damage probability of the fluid in the flow passage hole is reduced, and the invention has the advantages of simple structure, convenient construction, low engineering cost and the like, and is suitable for various drainage structures needing energy dissipation treatment.
Description
Technical Field
The invention particularly relates to the technical field of flow passage flood discharge and energy dissipation in water conservancy and hydropower engineering, in particular to an energy dissipation flow passage structure for reducing flow velocity.
Background
As the runner that sets up in the hydraulic and hydroelectric engineering, except meeting the flood discharge ability, still should guarantee the safety of flood discharge building during the operation, well link up and can give full play to the due energy dissipation effect with former river stream to avoid down the stream and cause the scour damage to downstream riverbed and bank slope. The existing spillway energy dissipation design generally adopts an energy dissipation mode except an outlet, and in recent years, the design of a spillway tunnel body energy dissipation structure gradually develops, and various types such as step energy dissipation, hole plug energy dissipation, hollowed-out plate energy dissipation, ventilation bank energy dissipation and the like are sequentially presented, but all the types utilize abrupt changes of an overflow surface to eliminate part of energy in fluid, and the flow rate of the outlet is reduced. At present, various existing energy dissipation forms of the tunnel body have the common defect that the flow state of water flow is disordered when the water flow passes through the tunnel body for energy dissipation, the water flow condition is poor, and cavitation erosion is easy to occur at the contact part. Therefore, there is a need for a shaft energy dissipating structure that dissipates energy and reduces cavitation problems to reduce outlet flow rate and eliminate some of the energy of the water flow.
Disclosure of Invention
In order to solve the technical problems, the invention provides an energy dissipation runner structure for reducing the flow velocity.
The invention is realized by the following technical scheme.
The invention provides an energy dissipation runner structure for reducing flow velocity, which comprises a runner hole, wherein a runner surface for enabling fluid to flow is arranged on the runner hole, one end of the runner surface is provided with a runner inlet, the other end of the runner surface is provided with a runner outlet, and at least one hump weir is arranged on the runner surface.
The cross section outline of the runner hole is non-closed or closed, and the runner surface is formed by the inner wall of the runner hole.
The projection of the runner surface on the transverse section of the runner hole is one of an open channel section, an urban gate-shaped section, a round shape and a horseshoe shape.
The hump weirs are intermittently or continuously arranged along the length direction of the runner surface at proper intervals, wherein the projections of any two hump weirs on the cross section of the runner hole are staggered.
The projection of the hump weir profile on the cross section of the runner hole comprises a circular arc section A positioned at the left side, a circular arc section B positioned at the top and a circular arc section C positioned at the right side.
The central angles corresponding to the arc sections A and C are 0-180 degrees. The central angle corresponding to the arc section C is 0-180 degrees.
The projection of the hump weir profile on the section of the runner Kong Zong further comprises a straight line connecting section connected between the arc section A and the arc section B or between the arc section C and the arc section B.
The height of the hump weir is less than two thirds of the height of the flow passage surface.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, the plurality of humps of different shapes, heights and sizes are arranged on the flow passage surface, and the humps are staggered on the flow passage surface, so that after fluid flows through the humps, the fluid state disturbance phenomenon is kept, the hydraulic condition is improved, meanwhile, the flow section is suddenly contracted and suddenly expanded due to the humps, the energy loss of water flow is increased, the purposes of reducing the flow speed, adjusting the streamline and the flow state are achieved, the cavitation damage probability of the fluid in the flow passage hole is reduced, and the invention has the advantages of simple structure, convenient construction, low engineering cost and the like, and is suitable for various drainage structures needing energy dissipation treatment.
Drawings
FIG. 1 is a schematic longitudinal sectional view of a first embodiment of the present invention;
FIG. 2 is a schematic longitudinal sectional view of a second embodiment of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic diagram of a cross-sectional structure of a flow passage hole according to the present invention;
FIG. 5 is a schematic cross-sectional view of a hump weir according to the present invention.
In the figure: the flow channel comprises a flow channel hole 1, a hump weir 2, a flow channel surface 11, a flow channel inlet 12, a flow channel outlet 13, a circular arc section A21, a circular arc section C22 and a circular arc section B23.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings, but the scope of the claimed invention is not limited to the above.
The invention relates to an energy dissipation runner structure for reducing flow velocity, which comprises a runner hole 1, a runner surface 11 for enabling fluid to flow through is arranged on the runner hole 1, a runner inlet 12 is arranged at one end of the runner surface 11, a runner outlet 13 is arranged at the other end of the runner surface 11, and at least one hump weir 2 is arranged on the runner surface 11, as shown in fig. 1, 2, 3 and 4.
By adopting the technical scheme of the invention, the plurality of humps of different shapes, heights and sizes are arranged on the flow passage surface, and the humps are staggered on the flow passage surface, so that after fluid flows through the humps, the fluid state disturbance phenomenon is kept, the hydraulic condition is improved, meanwhile, the flow section is suddenly contracted and suddenly expanded due to the humps, the energy loss of water flow is increased, the purposes of reducing the flow speed, adjusting the streamline and the flow state are achieved, the cavitation damage probability of the fluid in the flow passage hole is reduced, and the invention has the advantages of simple structure, convenient construction, low engineering cost and the like, and is suitable for various drainage structures needing energy dissipation treatment.
Further, the cross-sectional profile of the runner hole 1 is non-closed or closed, and the runner surface 11 is formed by the inner wall of the runner hole 1. The projection of the channel surface 11 on the transverse section of the channel hole 1 is one of an open channel section, a gate-shaped section, a round shape and a horseshoe shape. By adopting the technical scheme of the invention, the energy dissipation structure can be applied to spillway structures with various structural forms and has wide application.
Furthermore, a plurality of hump weirs 2 are arranged intermittently or continuously at appropriate intervals along the length direction of the flow passage face 11, wherein projections of any two hump weirs 2 on the cross section of the flow passage hole 1 are staggered with each other. Preferably, the spacing between any two adjacent hump weirs 2 is not the same. The appearance volume of any two humps weir 2 is different. By adopting the technical scheme of the invention, because the hump weirs 2 are different in size and volume, when fluid flows, the flow passage surface through which the fluid flows is changed in a manner of high and low and wide and narrow, so that part of energy in the fluid is consumed, and meanwhile, because the hump weirs 2 are arranged in a staggered manner, the fluid state is not excessively disturbed, and better direction consistency is still maintained, the hydraulic condition is improved, and the probability of cavitation is reduced.
Further, as shown in fig. 5, the projection of the contour of the hump weir 2 on the cross section of the runner hole 1 includes a circular arc segment a21 on the left side, a circular arc segment B23 on the top, and a circular arc segment C22 on the right side. The central angles corresponding to the arc sections A21 and C22 are 0 DEG
180 deg.. The central angle corresponding to the arc section C22 is 0-180 degrees. The projection of the outline of the hump weir 2 on the longitudinal section of the runner hole 1 also comprises a straight line connecting section 24 connected between the arc section A21 and the arc section B23 or between the arc section C22 and the arc section B23. The height of the hump weir 2 is less than two-thirds of the height of the flow passage surface 11. Specifically, the hump weirs 2 may be disposed at any position on the channel surface, and the spacing between any two adjacent hump weirs 2 may be equal or different.
The technical scheme of the application is put into implementation and application by the limited company of Guiyang survey design institute of electric construction group in China, in the implementation, the technology item is supported by the energy technology item HNKJ15-H12, the Guizhou science and technology support plan technology item Qianke support [2019]201970966703X 20407, and after the implementation, the beneficial technical effects are obtained, and meanwhile, the social benefit is good.
Claims (5)
1. The utility model provides a reduce energy dissipation runner structure of velocity of flow which characterized in that: the device comprises a runner hole (1), wherein the inner wall of the runner hole (1) is used as a runner surface (11) for enabling fluid to flow through, one end of the runner surface (11) is provided with a runner inlet (12), the other end of the runner surface (11) is provided with a runner outlet (13), and at least one hump weir (2) is arranged on the runner surface (11); the projection of the outline of the hump weir (2) on the longitudinal section of the runner hole (1) comprises a straight line connecting section (24) connected between the arc section A (21) and the arc section B (23) or between the arc section C (22) and the arc section B (23), and the height of the hump weir (2) is less than two thirds of the height of the runner hole (1); the hump weirs (2) are arranged on the bottom surface and the side surface of the runner surface (11) and are intermittently or continuously arranged at proper intervals along the length direction of the runner surface (11), wherein the projections of the hump weirs (2) on the cross section of the runner hole (1) are staggered.
2. The reduced flow rate energy dissipating flow channel structure of claim 1, wherein: the cross section outline of the runner hole (1) is non-closed or closed.
3. The reduced flow rate energy dissipating flow channel structure of claim 1, wherein: the transverse section of the runner hole (1) is one of an open channel section, an urban gate-shaped section, a round shape and a horseshoe shape.
4. The reduced flow rate energy dissipating flow channel structure of claim 1, wherein: the projection of the outline of the hump weir (2) on the longitudinal section of the runner hole (1) comprises an arc section A (21) positioned at the left side, an arc section B (23) positioned at the top and an arc section C (22) positioned at the right side.
5. The reduced flow rate energy dissipating channel structure of claim 4 wherein: the central angles corresponding to the arc sections A (21) and C (22) are 0-180 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811592428.4A CN109577292B (en) | 2018-12-25 | 2018-12-25 | Energy dissipation runner structure for reducing flow velocity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811592428.4A CN109577292B (en) | 2018-12-25 | 2018-12-25 | Energy dissipation runner structure for reducing flow velocity |
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| Publication Number | Publication Date |
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| CN109577292A CN109577292A (en) | 2019-04-05 |
| CN109577292B true CN109577292B (en) | 2024-03-19 |
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| CN201811592428.4A Active CN109577292B (en) | 2018-12-25 | 2018-12-25 | Energy dissipation runner structure for reducing flow velocity |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343016A (en) * | 2020-11-10 | 2021-02-09 | 中铁第四勘察设计院集团有限公司 | Combined energy dissipation structure of flood discharge tunnel |
| CN113174973B (en) * | 2021-04-27 | 2022-10-28 | 长沙理工大学 | Soft rock side slope ecological protection structure and construction method thereof |
| CN113931144B (en) * | 2021-11-30 | 2024-10-29 | 中国水利水电建设工程咨询西北有限公司 | Energy dissipation anti-impact structure of diversion tunnel outlet |
Citations (5)
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|---|---|---|---|---|
| CN103437332A (en) * | 2013-09-05 | 2013-12-11 | 中国水电顾问集团中南勘测设计研究院 | Protruding body and discharge chute for mounting protruding body |
| DE102014008895A1 (en) * | 2014-11-03 | 2016-05-04 | Ottfried Arnold | Hydrodynamic weir to prevent erosion in rivers and maintain navigability at low tide |
| CN205314071U (en) * | 2015-12-09 | 2016-06-15 | 西华大学 | Multistage fan -shaped abrupt slope dissipation structure |
| CN108797530A (en) * | 2017-05-04 | 2018-11-13 | 国电大渡河沙坪水电建设有限公司 | A kind of multichannel bank stilling pond of dispersible energy dissipating |
| CN209603094U (en) * | 2018-12-25 | 2019-11-08 | 中国电建集团贵阳勘测设计研究院有限公司 | Low-speed fluid energy dissipation runner structure |
-
2018
- 2018-12-25 CN CN201811592428.4A patent/CN109577292B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437332A (en) * | 2013-09-05 | 2013-12-11 | 中国水电顾问集团中南勘测设计研究院 | Protruding body and discharge chute for mounting protruding body |
| DE102014008895A1 (en) * | 2014-11-03 | 2016-05-04 | Ottfried Arnold | Hydrodynamic weir to prevent erosion in rivers and maintain navigability at low tide |
| CN205314071U (en) * | 2015-12-09 | 2016-06-15 | 西华大学 | Multistage fan -shaped abrupt slope dissipation structure |
| CN108797530A (en) * | 2017-05-04 | 2018-11-13 | 国电大渡河沙坪水电建设有限公司 | A kind of multichannel bank stilling pond of dispersible energy dissipating |
| CN209603094U (en) * | 2018-12-25 | 2019-11-08 | 中国电建集团贵阳勘测设计研究院有限公司 | Low-speed fluid energy dissipation runner structure |
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| CN109577292A (en) | 2019-04-05 |
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