CN204703141U - Contraction type import flush gallery - Google Patents
Contraction type import flush gallery Download PDFInfo
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- CN204703141U CN204703141U CN201520423784.9U CN201520423784U CN204703141U CN 204703141 U CN204703141 U CN 204703141U CN 201520423784 U CN201520423784 U CN 201520423784U CN 204703141 U CN204703141 U CN 204703141U
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- import
- water inlet
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- height
- rear port
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 13
- 239000004576 sand Substances 0.000 abstract description 13
- 210000003414 Extremities Anatomy 0.000 abstract description 7
- 230000000903 blocking Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000009991 scouring Methods 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
Abstract
The utility model discloses a kind of contraction type import flush gallery, relate to Hydraulic and Hydro-Power Engineering field, provide a kind of water inlet not easily to block, the flush gallery that before each water inlet, silt all can be drained.Multiple water inlets that contraction type import flush gallery comprises Main Corridor road and arranges along water (flow) direction, water inlet is communicated with Main Corridor road; Water inlet comprises the import front port of rectangle and the import rear port of rectangle; Each import front port shape is identical with size, and import front port height is greater than width; Import rear port width is consistent with import front port width, and import rear port height is less than import front port height, and the import rear port height being positioned at current downstream is less than the import rear port height being positioned at current upstream.Water inlet shrinkage ratio is different, and the flow velocity difference of each water inlet is obviously reduced, and the water inlet of gallery upstream extremity also can meet sand discharge requirement; Water inlet height is comparatively large, not easily occurs the situation of the complete shutoff of silt.
Description
Technical field
The utility model relates to Hydraulic and Hydro-Power Engineering field, particularly relates to a kind of contraction type import flush gallery.
Background technology
For the water channeling type power station of heavily silt-carrying river, the water diversion and sand control problem of head pivot is very outstanding, directly affects the safe operation of unit.In order to avoid rough sand crosses machine, need to arrange sand prevention desilting works, most silt can be tackled side by side to downstream in the defence line be made up of sediment trapping bank, bundle waterwall and scouring sluice, but fraction silt climbs over sediment trapping bank to be difficult to avoid, if unconditional sand discharge after intake, then need to arrange desilting works before intake.
Due to intake and the riverbed discrepancy in elevation less, conventional sand duct is difficult to play a role, desilting works many employings flush gallery before intake, it is arranged in below intake, adopt dispersion import, concentrate the pattern of outlet, arrange multiple import along water (flow) direction, the sand surfing funnel that each import is formed is connected with each other, although the sand surfing of single import is limited in scope, the sand surfing problem before multiple import connects together and can solve intake.
In the engineering that built water intaking width is less, the water inlet that flush gallery many employings the ratio of width to height is suitable or vertical seam type water inlet, there is following problem in these two kinds of import patterns: water inlet easy silt, blocking when flood season, sand content was larger that 1 the ratio of width to height is suitable; Though 2 conventional vertical seam type water inlets not easily silt up, along with the increase of water inlet quantity, each water inlet inbound traffics distributional difference increases, and the flow velocity of gallery upstream extremity reduces, and the silt before part water inlet can not be drained.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of water inlet not easily to block, the flush gallery that before each water inlet, silt all can be drained.
In order to solve the problem, the technical scheme adopted is: multiple water inlets that contraction type import flush gallery comprises Main Corridor road and arranges along water (flow) direction, and water inlet is communicated with Main Corridor road; Water inlet comprises the import front port of rectangle and the import rear port of rectangle; Each import front port shape is identical with size, and import front port height is greater than width; Import rear port width is consistent with import front port width, and import rear port height is less than import front port height, and the import rear port height being positioned at current downstream is less than the import rear port height being positioned at current upstream.
Further: the upper wall surface of water inlet is plane or arcwall face.
Further: the lower wall surface of water inlet is plane or arcwall face.
The beneficial effects of the utility model are: 1 in a fairly large number of situation of water inlet, because water inlet adopts different shrinkage ratios, the flow velocity difference of each water inlet is obviously reduced, and the water inlet of gallery upstream extremity also can meet sand discharge requirement, can drain the silt before whole intake; 2 due to highly comparatively large, and the situation of the complete shutoff of silt not easily appears in water inlet.
Accompanying drawing explanation
Fig. 1 is contraction type import flush gallery top view;
Fig. 2 is contraction type import flush gallery sectional view;
Be labeled as in figure: intake 1, water inlet 2, import front port 2-1, upper wall surface 2-2, import rear port 2-3, lower wall surface 2-4, Main Corridor road 3, gate 4.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
As depicted in figs. 1 and 2, multiple water inlets 2 that contraction type import flush gallery comprises Main Corridor road 3 and arranges along water (flow) direction, water inlet 2 is communicated with Main Corridor road 3; Water inlet 2 comprises the import front port 2-1 of rectangle and the import rear port 2-3 of rectangle; Each import front port 2-1 shape is identical with size, and import front port 2-1 is highly greater than width; Import rear port 2-3 width is consistent with import front port 2-1 width, and import rear port 2-3 is highly less than import front port 2-1 height, and the import rear port 2-3 being positioned at current downstream is highly less than the import rear port 2-3 height being positioned at current upstream.Main Corridor road 3 and water inlet 2 are arranged to be got below water inlet 1, and gate 4 is for controlling the break-make in Main Corridor road 3.
When the gate 4 of Main Corridor road 3 afterbody is opened, before each water inlet 2, flow rate of water flow all exceedes the initial velocity of shoal materials, silt imports Main Corridor road 3 with current by different water inlets 2, and water sand helically flows advance in Main Corridor road 3, and is exported discharged to downstream by Main Corridor road 3.
Import front port 2-1 refers to the current inlet port of water inlet 2, and import rear port 2-3 refers to the river conjunction in water inlet 2 and Main Corridor road 3.
" import front port 2-1 is highly greater than width " refers to that water inlet 2 is for perps structure, and namely water inlet 2 of the present utility model increases relative to prior art height, and the situation of the complete shutoff of silt not easily appears in gallery import.
" import rear port 2-3 is highly less than import front port 2-1 height; the import rear port 2-3 being positioned at current downstream is highly less than the import rear port 2-3 height being positioned at current upstream " refers to that water inlet 2 is the structure of shrinking to direction, Main Corridor road 3, and it is different along water (flow) direction shrinkage ratio, upstream water inlet 2 shrinkage ratio is large, and downstream water inlet 2 shrinkage ratio is little.Because Main Corridor road 3 length is larger, each water inlet 2 is according to same shape, the inbound traffics of downstream water inlet 2 can obviously be greater than upstream extremity water inlet 2, cause upstream extremity water inlet 2 flow velocity less than normal, and adopt the contraction type shape that import rear port 2-1 highly successively decreases, the inbound traffics of upstream extremity water inlet 2 can be increased and reduce the inbound traffics of downstream water inlet 2, reach the object of water inlet 2 flow velocity homogenising, the flow velocity difference of each water inlet 2 is obviously reduced, the water inlet 2 of upstream extremity also can meet sand discharge requirement, can drain the silt before whole intake 1
Water inlet 2 can adopt straight line shrink form usually, but also can adopt curve shrinkage form.Namely the upper wall surface 2-2 of water inlet 2 and lower wall surface 2-4 can be plane or arcwall face.
Claims (3)
1. contraction type import flush gallery, the multiple water inlets (2) comprising Main Corridor road (3) and arrange along water (flow) direction, water inlet (2) is communicated with Main Corridor road (3); It is characterized in that: water inlet (2) comprises the import front port (2-1) of rectangle and the import rear port (2-3) of rectangle; Each import front port (2-1) shape is identical with size, and import front port (2-1) is highly greater than width; Import rear port (2-3) width is consistent with import front port (2-1) width, import rear port (2-3) is highly less than import front port (2-1) highly, the import rear port (2-3) being positioned at current downstream be highly less than be positioned at current upstream import rear port (2-3) highly.
2. contraction type import flush gallery according to claim 1, is characterized in that: the upper wall surface (2-2) of water inlet (2) is plane or arcwall face.
3. contraction type import flush gallery according to claim 1, is characterized in that: the lower wall surface (2-4) of water inlet (2) is plane or arcwall face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423784.9U CN204703141U (en) | 2015-06-18 | 2015-06-18 | Contraction type import flush gallery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423784.9U CN204703141U (en) | 2015-06-18 | 2015-06-18 | Contraction type import flush gallery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204703141U true CN204703141U (en) | 2015-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520423784.9U Active CN204703141U (en) | 2015-06-18 | 2015-06-18 | Contraction type import flush gallery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204703141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144861A (en) * | 2019-06-05 | 2019-08-20 | 黄河勘测规划设计研究院有限公司 | A kind of the sand discharge structure and method of heavily silt-carrying river natural flow station |
-
2015
- 2015-06-18 CN CN201520423784.9U patent/CN204703141U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144861A (en) * | 2019-06-05 | 2019-08-20 | 黄河勘测规划设计研究院有限公司 | A kind of the sand discharge structure and method of heavily silt-carrying river natural flow station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |