CN210086195U - Shaft type tail canal of hydropower station - Google Patents
Shaft type tail canal of hydropower station Download PDFInfo
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- CN210086195U CN210086195U CN201920065138.8U CN201920065138U CN210086195U CN 210086195 U CN210086195 U CN 210086195U CN 201920065138 U CN201920065138 U CN 201920065138U CN 210086195 U CN210086195 U CN 210086195U
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- tailrace
- shaft
- tail water
- tail
- vertical shaft
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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 utility model discloses a vertical shaft formula tailrace of power station, including tail horizontal hole, the tailrace shaft of connecting the export of factory building tailrace and being located the peripheral sand bank that blocks in tailrace shaft top. The tail horizontal holes are horizontally arranged side by side and are connected with the tail water vertical shaft, and the periphery of the tail water vertical shaft shares a sand blocking ridge. The tail water vertical shaft direction is a vertical direction. The utility model has compact structure arrangement and small engineering investment; the shaft type tail water channel is combined with the sand blocking ridge on the downstream side of the shaft, the problem of sediment deposition of the reverse slope type tail water channel when the absolute value of the suction height of a bank factory building, particularly a hydroelectric generating set, is large can be thoroughly solved, unsafe factors influencing flood traveling due to the fact that the sand blocking ridge arranged on the periphery of the reverse slope type tail water channel excessively occupies the cross section of a river channel are avoided, and meanwhile the sand blocking ridge can be used as a cofferdam in the construction period. Wide application range and obvious technical and economic advantages.
Description
Technical Field
The utility model belongs to the technical field of the hydropower station tail canal engineering technique and specifically relates to a vertical shaft formula tail canal structure of hydropower station.
Background
The tail water channel is a channel for discharging the power generation tail water of the hydropower station to a downstream river channel from a tail water pipe or a tail water tunnel outlet. The bottom plate of the outlet of the draft tube or the draft tunnel is lower than the height of the rear riverbed, a reverse slope type tail water channel is generally adopted for connection, the reverse slope ratio is determined by the condition of the foundation at the bottom of the channel, the rock-based slope ratio is generally 1: 3-1: 4, and the non-rock-based slope ratio is generally 1: 4-1: 5.
In order to avoid cavitation of the hydroelectric generating set and guarantee stable operation of the hydroelectric generating set, the outlet elevation of the draft tube needs to be located at a sufficient depth below the tail water level, a larger height difference exists between the outlet of the draft tube and the tail end of the draft channel, a reverse slope type draft channel is generally adopted to be connected with a river channel, the reverse slope at the bottom of the channel is slower, and the length of the draft channel is longer.
Because the length of the reverse slope type tail water channel is longer, the height difference between the outlet of the tail water pipe and the tail end of the tail water channel is larger, silt is easy to deposit in the tail water channel in the operation period, the silt deposit problem is solved by arranging a sand blocking bank at the periphery of the tail water channel, and the flood section of the river channel can be excessively occupied, so that the flood safety of the river channel is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a arrange compact, influence little, the wide hydropower station shaft formula tailrace of application scope to river course flood passage is provided.
In order to solve the technical problem, the utility model discloses a technical scheme is: a vertical shaft type tail water channel of a hydropower station comprises a tail horizontal hole connected with a tail water outlet of the hydropower station, a tail water vertical shaft connected with the tail horizontal hole and a sand blocking ridge positioned on the periphery of the top of the tail water vertical shaft.
The tail horizontal tunnel is a plurality of that the level set up side by side, and the tail water shaft is a plurality of that vertical set up side by side, and every tail horizontal tunnel links to each other with a tail water shaft, and a plurality of tail water shafts that set up side by side share one and block the sand bank.
The tail water vertical shaft direction is a vertical direction.
The utility model has the advantages that: compared with the prior art, the structure is arranged compactly, and the engineering investment is small; the shaft type tail water channel is combined with the sand blocking ridge on the downstream side of the shaft, the problem of sediment deposition of the reverse slope type tail water channel when the absolute value of the suction height of a bank factory building, particularly a hydroelectric generating set, is large can be thoroughly solved, unsafe factors influencing flood traveling due to the fact that the sand blocking ridge arranged on the periphery of the reverse slope type tail water channel excessively occupies the cross section of a river channel are avoided, and meanwhile the sand blocking ridge can be used as a cofferdam in the construction period. Wide application range and obvious technical and economic advantages.
Drawings
Fig. 1 is a schematic structural view of a shaft type tail canal of a hydropower station of the utility model;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a sectional view taken along line B-B of fig. 1.
Detailed Description
As shown in fig. 1, the utility model discloses a vertical shaft type tailrace of hydropower station, including the tailrace horizontal hole 1 of connecting the export of factory building tailrace, the tailrace vertical shaft 2 of being connected with tailrace horizontal hole 1 and be located the peripheral sand blocking bank 3 in tailrace vertical shaft top.
The tail horizontal tunnel 1 is a plurality of that the level set up side by side, and tail water shaft 2 is a plurality of that vertical set up side by side, and every tail horizontal tunnel 1 links to each other with a tail water shaft 2, and a plurality of tail water shaft 2 that set up side by side share one sand blocking bank 3.
Preferably, the direction of the tail water shaft 2 is a vertical direction.
As shown in fig. 2, the tailrace horizontal tunnel 1 is composed of a tailrace horizontal tunnel top plate 12, a tailrace horizontal tunnel bottom plate 13, a tailrace horizontal tunnel partition wall 14, and tailrace horizontal tunnel side walls 11. As shown in fig. 3, the tail water shaft 2 is composed of a tail water shaft side wall 22, a tail water shaft partition wall 23 and a tail water shaft end wall 21.
The power generation tail water enters a river channel after passing through a tail horizontal tunnel 1 of the shaft type tail water channel, a tail water vertical shaft 2 and a sand blocking bank 3.
The direction of tail water shaft 2 is vertical direction, arranges compactly, reduces tail water channel excavation and tail water channel bank protection engineering volume, and it is little to encroach on river course bank flood section, guarantees river course bank flood safety, and application scope is wide.
The sand blocking ridge 3 is arranged on the periphery of the top of the tail water shaft 2, so that sediment accumulation is not easy to generate in the tail water channel, and the operation safety and stability are ensured. 4 is tail water retaining wall, 3 is sand blocking bank which can be used as cofferdam in construction period, and the combination is always on.
The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, the scope of the present invention should not be limited by the embodiment, that is, all equivalent changes or modifications made by the spirit of the present invention should still fall within the scope of the present invention.
Claims (2)
1. The utility model provides a power station shaft formula tailrace, a serial communication port, including tail horizontal hole (1) of connecting the export of factory building tailrace, tailrace vertical shaft (2) be connected with tail horizontal hole (1) and be located peripheral sand blocking bank (3) in tailrace vertical shaft top, tail horizontal hole (1) are a plurality of that the level set up side by side, tailrace vertical shaft (2) are a plurality of that vertical set up side by side, every tail horizontal hole (1) links to each other with a tailrace vertical shaft (2), a plurality of tailrace vertical shaft (2) that set up side by side share one and block sand bank (3).
2. The shaft tailrace of a hydroelectric power station according to claim 1, wherein the tailrace shaft (2) is oriented in a vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065138.8U CN210086195U (en) | 2019-01-15 | 2019-01-15 | Shaft type tail canal of hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920065138.8U CN210086195U (en) | 2019-01-15 | 2019-01-15 | Shaft type tail canal of hydropower station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210086195U true CN210086195U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920065138.8U Active CN210086195U (en) | 2019-01-15 | 2019-01-15 | Shaft type tail canal of hydropower station |
Country Status (1)
| Country | Link |
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| CN (1) | CN210086195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750644A (en) * | 2019-01-15 | 2019-05-14 | 中国电建集团北京勘测设计研究院有限公司 | Power station vertical shaft type tailwater channel |
-
2019
- 2019-01-15 CN CN201920065138.8U patent/CN210086195U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750644A (en) * | 2019-01-15 | 2019-05-14 | 中国电建集团北京勘测设计研究院有限公司 | Power station vertical shaft type tailwater channel |
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