CN102304912A - Sink-type top inflow sand flushing gallery structure - Google Patents
Sink-type top inflow sand flushing gallery structure Download PDFInfo
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- CN102304912A CN102304912A CN201110210961A CN201110210961A CN102304912A CN 102304912 A CN102304912 A CN 102304912A CN 201110210961 A CN201110210961 A CN 201110210961A CN 201110210961 A CN201110210961 A CN 201110210961A CN 102304912 A CN102304912 A CN 102304912A
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- gallery
- sand flushing
- sink
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- type top
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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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Abstract
The invention relates to a sink-type top inflow sand flushing gallery structure, aiming to solve the technical problem of providing a sink-type top inflow sand flushing gallery structure which has simple structure and is convenient to construct. Silt along the sand flushing gallery can be removed; meanwhile, no dirt is accumulated on a power generation water inlet; during the working condition of flood discharge, suction eddy appearing above the sand flushing gallery can be eliminated to guarantee the safety of sand flushing cave structure. The technical problem for solving the problems is that the sink-type top inflow sand flushing gallery structure comprises a gallery main body, wherein the top of the gallery body is provided with one group of inflow holes. The sink-type top inflow sand flushing gallery structure is characterized in that one group of eddy beams is evenly distributed above the gallery body. The sink-type top inflow sand flushing gallery structure is mainly used in the hydropower station engineering, especially in the hydropower stations of rivers with more sand.
Description
Technical field
The present invention relates to a kind of scour gallery structure, particularly a kind of sunk type top influent stream scour gallery structure mainly is applicable in the Hydropower Project, is specially adapted to the power station of fully-loaded stream.
Background technology
For the power station of building on fully-loaded stream,, arrange the sand surfing hole before the water inlet of being everlasting for keeping generating water inlet " clear in front of the door ".When water channeling type power station, bank has many diversion tunnels, water inlet horizontal spreading broad, can adopt and arrange many sand surfing holes, enlarge the mode of sand surfing scope; Also can only arrange a sand surfing hole, and in the sand surfing hole the anterior scour gallery of arranging, make the sand surfing effect extend to a plurality of generating water inlets before.Latter's flexible arrangement is invested lower.When flood discharge need be participated in the sand surfing hole, because flow velocity is higher in the flood discharge operation condition hole, the scour gallery top was prone to produce air-breathing whirlpool, jeopardizes the safety of sand surfing hole structure.Therefore, the sand surfing hole water inlet structure that has sand surfing and flood discharge function simultaneously concurrently is arranged, should satisfy the hydraulics requirement of sand surfing operation, and hydraulics requirement when satisfying the flood discharge operation again has special requirement to the layout of scour gallery.
Summary of the invention
The technical problem that the present invention will solve is: the sunk type top influent stream scour gallery structure that a kind of simple in structure, easy construction is provided; Can get rid of scour gallery silt along the line; Keep generating water inlet " clear in front of the door " simultaneously; And when the flood discharge operating mode; Can eliminate the air-breathing whirlpool that the scour gallery top occurs, guarantee the safety of sand surfing hole structure.
The technical scheme that the present invention adopted is: sunk type top influent stream scour gallery structure, comprise the gallery main body, and one group of drainage hole is offered at its top, it is characterized in that: one group of whirlpool beam that disappears is evenly arranged in said gallery main body top.
Said drainage hole is rectangular, and the width of each drainage hole diminishes along water (flow) direction gradually.
The center line of said drainage hole and the angle of horizontal plane are 45 degree, and its incline direction is downward-sloping along water (flow) direction.
Said gallery body cross-section is the shape of falling the gateway opening of square top and round bottom.
Said gallery main body integral arrangement is in the rock mass of sand trap bottom.
The whirlpool beam that respectively disappears is positioned on the same horizontal plane, and arranges perpendicular to gallery main center line.
The invention has the beneficial effects as follows: the present invention evenly arranges one group of whirlpool beam that disappears above the scour gallery main body; Air-breathing whirlpool appears in the scour gallery top in the time of can effectively preventing the flood discharge of sand surfing hole; Thereby prevent that the sand surfing hole from cavitation erosion taking place, and has guaranteed the safety of sand surfing hole structure; In addition, the present invention adopts the arrangement form in scour gallery combination wall scroll sand surfing hole, can solve the problem of a plurality of generating diversion water inlets " clear in front of the door " simultaneously, has reduced construction investment.
Description of drawings
Fig. 1 is an outline inboard profile of the present invention.
Fig. 2 is that the 1-1 of Fig. 1 is to sectional drawing.
Fig. 3 is the disappear structural layout plan of whirlpool beam of the present invention.
Fig. 4 is a layout plan of the present invention.
The specific embodiment
For the power station of building on fully-loaded stream, get into the power station hydraulic turbine for avoiding bulky grain silt, before water inlet, build sand trap usually.Like Fig. 1-shown in Figure 4; Present embodiment comprises and is positioned at the anterior and integral arrangement in sand surfing hole in the gallery main body 1 (adopting the concreting of C50 impact-resisting wear-resisting to form) of sand trap bottom rock mass; It is 70～90 ° that its center line generally is controlled at generating diversion water (flow) direction angle; Keeping certain distance with the water inlet leading edge (is simplified structure; Scour gallery is as far as possible away from water inlet; But guarantee that water inlet is in the scope of sand surfing funnel), its current delivery outlet is communicated with the import of sand surfing hole.Said gallery main body 1 cross section is the shape of falling the gateway opening of square top and round bottom; Offer one group of not wide rectangle drainage hole 2 (width of each drainage hole diminishes along water (flow) direction gradually in this example) at this gallery main body 1 top; The center line of this drainage hole and the angle of horizontal plane are 45 degree; Its incline direction is downward-sloping along water (flow) direction, helps taking in the balanced entering gallery main body 1 of husky current.
When the sand surfing hole is used for flood discharge; For eliminating the air-breathing whirlpool that the scour gallery top occurs; Bilateral symmetry is arranged some vertical posts 4 above gallery main body 1; Each capital end is positioned on the same horizontal plane; Between two also adjacent posts 4 of the same side, adopt the beam 5 of horizontal arrangement to connect; Form two long beams that are parallel to each other; Simultaneously; The two ends of two long beams are connected respectively; Form the rectangular beam framework of a horizontal arrangement, in this beam framework, evenly arrange one group of whirlpool beam 3 that disappears, the whirlpool beam 3 that respectively disappears is positioned at same plane with said beam framework; And directly arrange the harmful whirlpool when being used to eliminate influent stream in gallery main body 1 center line.
Technical scheme of the present invention hydraulic model test checking, confirmation is feasible, can get a desired effect.
Claims (6)
1. a sunk type top influent stream scour gallery structure comprises gallery main body (1), and one group of drainage hole (2) is offered at its top, it is characterized in that: one group of whirlpool beam (3) that disappears is evenly arranged in said gallery main body (1) top.
2. sunk type according to claim 1 top influent stream scour gallery structure is characterized in that: said drainage hole (2) is rectangular, and the width of each drainage hole (2) diminishes along water (flow) direction gradually.
3. sunk type according to claim 1 and 2 top influent stream scour gallery structure is characterized in that: the center line of said drainage hole (2) and the angle of horizontal plane are 45 degree, and its incline direction is downward-sloping along water (flow) direction.
4. sunk type according to claim 1 top influent stream scour gallery structure is characterized in that: said gallery main body (1) cross section is the shape of falling the gateway opening of square top and round bottom.
5. according to claim 1 or 4 described sunk type top influent stream scour gallery structures, it is characterized in that: said gallery main body (1) integral arrangement is in the rock mass of sand trap bottom.
6. sunk type according to claim 1 top influent stream scour gallery structure is characterized in that: the whirlpool beam (3) that respectively disappears is positioned on the same horizontal plane, and arranges perpendicular to gallery main body (1) center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110210961A CN102304912A (en) | 2011-07-21 | 2011-07-21 | Sink-type top inflow sand flushing gallery structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110210961A CN102304912A (en) | 2011-07-21 | 2011-07-21 | Sink-type top inflow sand flushing gallery structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102304912A true CN102304912A (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110210961A Pending CN102304912A (en) | 2011-07-21 | 2011-07-21 | Sink-type top inflow sand flushing gallery structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882838A (en) * | 2014-02-27 | 2014-06-25 | 黄河水利委员会黄河水利科学研究院 | Sediment releasing method for water intake of low-head river channel pivotal power station |
| CN105089022A (en) * | 2014-05-07 | 2015-11-25 | 天津虹炎科技有限公司 | Sediment disposal method for water inlets of power station |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628583Y (en) * | 2003-07-29 | 2004-07-28 | 谭培根 | Self-removing sand gallery |
| CN201473935U (en) * | 2009-08-19 | 2010-05-19 | 中国水电顾问集团华东勘测设计研究院 | Diversion tunnel stone-pit structure |
| CN202187326U (en) * | 2011-07-21 | 2012-04-11 | 中国水电顾问集团华东勘测设计研究院 | Sinking-mode top inflow sand-scouring gallery structure |
-
2011
- 2011-07-21 CN CN201110210961A patent/CN102304912A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2628583Y (en) * | 2003-07-29 | 2004-07-28 | 谭培根 | Self-removing sand gallery |
| CN201473935U (en) * | 2009-08-19 | 2010-05-19 | 中国水电顾问集团华东勘测设计研究院 | Diversion tunnel stone-pit structure |
| CN202187326U (en) * | 2011-07-21 | 2012-04-11 | 中国水电顾问集团华东勘测设计研究院 | Sinking-mode top inflow sand-scouring gallery structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882838A (en) * | 2014-02-27 | 2014-06-25 | 黄河水利委员会黄河水利科学研究院 | Sediment releasing method for water intake of low-head river channel pivotal power station |
| CN103882838B (en) * | 2014-02-27 | 2015-12-02 | 黄河水利委员会黄河水利科学研究院 | A kind of sand discharge method of low water head river channel hinge powerplant intakes |
| CN105089022A (en) * | 2014-05-07 | 2015-11-25 | 天津虹炎科技有限公司 | Sediment disposal method for water inlets of power station |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |