CN219862683U - Pressurized side type water inlet and outlet structure of underground reservoir - Google Patents
Pressurized side type water inlet and outlet structure of underground reservoir Download PDFInfo
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- CN219862683U CN219862683U CN202320838981.1U CN202320838981U CN219862683U CN 219862683 U CN219862683 U CN 219862683U CN 202320838981 U CN202320838981 U CN 202320838981U CN 219862683 U CN219862683 U CN 219862683U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000009792 diffusion process Methods 0.000 claims abstract description 22
- 238000009499 grossing Methods 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 description 6
- 238000011160 research Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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 relates to a pressurized side type water inlet and outlet structure of an underground reservoir. The utility model is suitable for the field of pumped storage power station engineering. The utility model aims to solve the technical problems that: provides a pressure side type water inlet and outlet structure of an underground reservoir. The technical scheme adopted by the utility model is as follows: the utility model provides a there is pressure side formula water inlet outlet structure of underground reservoir which characterized in that includes: the reservoir tunnel gentle slope section is a water storage main body of the underground reservoir; the upper end of the reservoir tunnel abrupt slope section is connected with the lower end of the reservoir tunnel gentle slope section, and the length and the abrupt slope gradient ensure that the highest running water level and the lowest running water level of the underground reservoir are in the section when the underground reservoir normally runs; one end of the straight section of the reservoir tunnel is connected with the lower end of the steep slope section of the reservoir tunnel and is used for smoothing water flow; the large-diameter end of the water inlet and outlet diffusion section is connected with the other end of the straight section of the reservoir tunnel; and the water inlet and outlet tunnel is connected with the small diameter end of the water inlet and outlet diffusion section.
Description
Technical Field
The utility model relates to a pressurized side type water inlet and outlet structure of an underground reservoir. The method is suitable for the engineering of the pumped storage power station.
Background
With the continuous deepening of energy reforms in China, more and more pumped storage power stations are put into early survey design and construction stages, and as stations with excellent sites are fewer and fewer, particularly in some areas with fewer mountains, the difficulty in building the pumped storage power stations is greater and greater.
In recent years, research on construction needs of waste mine holes or mineral resource exploitation combined with pumped storage power stations in China is continuously emerging, the most serious problems encountered in construction of the type of pumped storage power stations at present are that the selected mine holes are required to have anti-seepage characteristics, can bear relatively frequent water level fluctuation, and are stable and safe in structure, and moreover, because the mine holes are used as reservoirs and required to be underground, the underground space is mostly millions of cubic meters, limited space can be fully used, the problems of important attention of constructors are also solved, in addition, the water inlet and outlet arrangement structure combined with the mine holes is required to meet the requirement of small water head loss of water flowing into and out of the tunnel, and the generation of air suction vortex is prevented, so that the pumped storage power station is one of key difficulties of whether to truly apply. Related researches are still in a starting stage at present, and no mature cases or excellent scientific research results are displayed at present.
Disclosure of Invention
The utility model aims to solve the technical problems that: aiming at the problems, the pressure side type water inlet and outlet structure of the underground reservoir is provided, so that the water inlet can be guaranteed to have a good inflow and outflow flow state, and the reservoir capacity of the underground reservoir can be effectively stored and fully utilized.
The technical scheme adopted by the utility model is as follows: the utility model provides a there is pressure side formula water inlet outlet structure of underground reservoir which characterized in that includes:
the reservoir tunnel gentle slope section is a water storage main body of the underground reservoir;
the upper end of the reservoir tunnel abrupt slope section is connected with the lower end of the reservoir tunnel gentle slope section, and the length and the abrupt slope gradient ensure that the highest running water level and the lowest running water level of the underground reservoir are in the section when the underground reservoir normally runs;
one end of the straight section of the reservoir tunnel is connected with the lower end of the steep slope section of the reservoir tunnel and is used for smoothing water flow;
the large-diameter end of the water inlet and outlet diffusion section is connected with the other end of the straight section of the reservoir tunnel;
and the water inlet and outlet tunnel is connected with the small diameter end of the water inlet and outlet diffusion section.
The bottom plate of the straight section of the reservoir tunnel is lower than the bottom plate of the water inlet and outlet diffusion section, and a sill is formed at the bottom between the straight section of the reservoir tunnel and the water inlet and outlet diffusion section.
And the height drop of the bottom plate of the straight section of the reservoir tunnel and the bottom plate of the diffusion section of the water inlet and outlet is about 0.5m.
The length of the straight section of the reservoir tunnel is 3 times of the diameter of the water inlet and outlet tunnel.
The length of the steep slope section of the reservoir tunnel is about 20 times that of the water inlet and outlet tunnel, and the steep slope gradient is 8% -10%.
The section gradient of the reservoir tunnel gentle slope is 2%.
The beneficial effects of the utility model are as follows: according to the utility model, the water inlet and outlet diffusion section, the straight section of the reservoir tunnel and the steep slope section of the reservoir tunnel are arranged, so that the water inlet and outlet has good water flow state, the storage capacity of the underground reservoir can be fully utilized, the construction difficulty is low, and the engineering investment and the construction period are more controllable.
Drawings
Fig. 1 is a schematic elevation layout of an embodiment.
Fig. 2 is a schematic plan view of an embodiment.
1. A water inlet and outlet tunnel; 2. a water inlet and outlet diffusion section; 3. a straight section of the reservoir tunnel; 4. steep slope sections of reservoir tunnels; 5. and a gentle slope section of the reservoir tunnel.
Detailed Description
As shown in fig. 1 and 2, the embodiment is a pressure side water inlet and outlet structure of an underground reservoir, which comprises a reservoir tunnel gentle slope section, a reservoir tunnel steep slope section, a reservoir tunnel straight section, a water inlet and outlet diffusion section, a water inlet and outlet tunnel and the like which are sequentially connected and communicated,
in the embodiment, the slow slope section of the tunnel of the water reservoir is a water storage main body of the underground reservoir, and if the underground reservoir is a newly built tunnel reservoir, the longitudinal slope can be about 2%, so that the aim of fully utilizing the underground space storage capacity is fulfilled; if the reservoir is an established underground tunnel and is transformed into an underground reservoir, the water inlet and outlet diffusion section, the straight section of the reservoir tunnel and the steep slope section of the reservoir tunnel can be smoothly connected by fully considering the elevation and the storage capacity characteristics of the established underground reservoir during arrangement.
In the embodiment, the water storage main body of the underground reservoir is a gentle slope section and has a free water surface, so that a relatively large free water surface area is formed, a true lower reservoir is formed, the relative stability of a water head of a unit is ensured, the water level amplitude is reduced, and the operation stability of the whole water delivery power generation system is facilitated.
In this embodiment, the upper end of the slope of the steep slope section of the reservoir tunnel is connected with the lower end of the slope of the gentle slope section of the reservoir tunnel, the length of the steep slope section of the reservoir tunnel is about 20 times the diameter of the water inlet and outlet tunnel, the slope of the steep slope is used for ensuring that the highest running water level and the lowest running water level of the reservoir are both in the section when the reservoir is normally running, and the value can be generally 8% -10%, and is determined according to engineering characteristics.
The steep slope section of the tunnel in the water reservoir is a demarcation section of the underground reservoir from a pressurized state to an pressureless state in the embodiment, and the advantages of fixing the steep slope section in the section are that the pressurized and pressureless conversion area is fixed in a certain area, and the suction vortex can be prevented from entering the tunnel due to the longer length of the steep slope section, so that the structure safety and the cost are ensured by the processing of the reinforcing structure in the area, and the elevation of the water inlet and outlet area is lower, and the steep slope section is in a pressurized state, so that the occurrence of a high pressureless section of the underground reservoir can be avoided.
In the embodiment, one end of a straight section of the water reservoir tunnel is connected with the lower end of a slope of a steep slope section of the reservoir tunnel, and the length of the straight section is 3 times of the diameter of the water inlet and outlet tunnel so as to smooth water flow.
In the embodiment, the large-diameter end of the water inlet and outlet diffusion section is connected with the other end of the straight section of the reservoir tunnel, the pressure side water inlet and outlet of the underground reservoir uses the diffusion section with smooth water flow state, a vortex-preventing beam for preventing the air suction vortex from entering the tunnel is not required to be arranged, engineering investment is saved, the construction difficulty of the underground engineering is reduced, and the air suction vortex is prevented from happening by using the diffusion section which is a part of the underground reservoir.
In the embodiment, the bottom plate of the straight section of the reservoir tunnel is lower than the bottom plate of the diffusion section of the water inlet and outlet by about 0.5m, and a sill of about 0.5m is formed at the bottom between the straight section of the reservoir tunnel and the diffusion section of the water inlet and outlet, so that the effect of blocking the ballast is achieved.
In the embodiment, the highest operating water level and the lowest operating water level are both in the steep slope section of the reservoir tunnel when the water reservoir normally operates, so that the water inlet and outlet diffusion section and the straight section of the reservoir tunnel are ensured to be always in all pressurized operating states in the operation process of the power station.
The above embodiments are only for illustrating the inventive concept of the present utility model and not for limiting the protection of the claims of the present utility model, and all the insubstantial modifications of the present utility model using the concept shall fall within the protection scope of the present utility model.
Claims (6)
1. The utility model provides a there is pressure side formula water inlet outlet structure of underground reservoir which characterized in that includes:
the reservoir tunnel gentle slope section is a water storage main body of the underground reservoir;
the upper end of the reservoir tunnel abrupt slope section is connected with the lower end of the reservoir tunnel gentle slope section, and the length and the abrupt slope gradient ensure that the highest running water level and the lowest running water level of the underground reservoir are in the section when the underground reservoir normally runs;
one end of the straight section of the reservoir tunnel is connected with the lower end of the steep slope section of the reservoir tunnel and is used for smoothing water flow;
the large-diameter end of the water inlet and outlet diffusion section is connected with the other end of the straight section of the reservoir tunnel;
and the water inlet and outlet tunnel is connected with the small diameter end of the water inlet and outlet diffusion section.
2. The pressurized-side water inlet and outlet structure of an underground reservoir according to claim 1, wherein: the bottom plate of the straight section of the reservoir tunnel is lower than the bottom plate of the water inlet and outlet diffusion section, and a sill is formed at the bottom between the straight section of the reservoir tunnel and the water inlet and outlet diffusion section.
3. The pressurized-side water inlet and outlet structure of an underground reservoir according to claim 2, wherein: and the height drop of the bottom plate of the straight section of the reservoir tunnel and the bottom plate of the diffusion section of the water inlet and outlet is about 0.5m.
4. The pressurized-side water inlet and outlet structure of an underground reservoir according to claim 1, wherein: the length of the straight section of the reservoir tunnel is 3 times of the diameter of the water inlet and outlet tunnel.
5. The pressurized-side water inlet and outlet structure of an underground reservoir according to claim 1, wherein: the length of the steep slope section of the reservoir tunnel is about 20 times that of the water inlet and outlet tunnel, and the steep slope gradient is 8% -10%.
6. The pressurized-side water inlet and outlet structure of an underground reservoir according to claim 1, wherein: the section gradient of the reservoir tunnel gentle slope is 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320838981.1U CN219862683U (en) | 2023-04-06 | 2023-04-06 | Pressurized side type water inlet and outlet structure of underground reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320838981.1U CN219862683U (en) | 2023-04-06 | 2023-04-06 | Pressurized side type water inlet and outlet structure of underground reservoir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219862683U true CN219862683U (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320838981.1U Active CN219862683U (en) | 2023-04-06 | 2023-04-06 | Pressurized side type water inlet and outlet structure of underground reservoir |
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| CN (1) | CN219862683U (en) |
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2023
- 2023-04-06 CN CN202320838981.1U patent/CN219862683U/en active Active
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