CN214836838U - Pumped storage electricity storage system for dam - Google Patents
Pumped storage electricity storage system for dam Download PDFInfo
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- CN214836838U CN214836838U CN202121347002.XU CN202121347002U CN214836838U CN 214836838 U CN214836838 U CN 214836838U CN 202121347002 U CN202121347002 U CN 202121347002U CN 214836838 U CN214836838 U CN 214836838U
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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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- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
A pumped storage and electricity storage system for a dam relates to an energy storage and electricity storage system. The water outlet end of the reversible pump water turbine is connected with a tail water tunnel, a lower reservoir is arranged on the tail water tunnel, a bypass overflowing channel is arranged on the water outlet end of the reversible pump water turbine, a pressure regulating valve is arranged on the bypass overflowing channel, and the outlet end of the pressure regulating valve is communicated with the tail water tunnel. The utility model discloses a set up the surge shaft on the export section of upper reservoir and set up the air-vent valve on reversible pump hydraulic turbine's export bypass passageway, through the antithetical couplet of surge shaft and air-vent valve transfers the protection, has effectively reduced the terminal rivers pressure of reversible pump hydraulic turbine and its rotational speed rate of rise.
Description
Technical Field
The utility model relates to an energy-conserving power generation technical field, concretely relates to dam is with pumped storage electricity storage system.
Background
The energy storage and power storage system becomes the most reasonable, economic and reliable peak shaving power supply recognized by countries in the world nowadays. The construction of the energy storage and storage power station is a reliable measure for meeting the peak load demand increase of the power grid and the consumption of the residual electric energy of the power grid, is the need of improving the structure and the operation condition of the power grid and reducing the operation cost, is the need of enhancing the emergency capacity of the power grid, is the need of matching with the operation of a nuclear power station, wind power and the like, has larger ecological and environmental benefits when being used for constructing the pumped storage power station, and has less engineering investment and shorter construction period when being used for constructing the pumped storage power station.
The water hammer generated in the running process of the energy storage and electricity storage system becomes a main factor of safe running of the system, in the current application and the engineering of the system, a manostat is mostly adopted as a regulation and protection measure for a system pipeline, however, the manostat scheme inevitably has the factors of large investment, long construction period and the like, so that the manostat can not meet the requirements of current construction of energy-saving power stations more and more, meanwhile, for some small and medium-sized hydropower stations with longer water diversion systems, the manostat can not meet the regulation and protection requirements when the manostat is independently arranged for protection, and if only the scheme of replacing the manostat with a pressure regulating valve is adopted, the small dynamic working condition of the water diversion systems is difficult to stabilize, the hydraulic interference phenomenon among units is serious, and the safe running of the units can not be ensured.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a dam is with pumped storage electricity storage system, it sets up the surge shaft and sets up the air-vent valve on reversible pump hydraulic turbine's export bypass passageway through setting up on the export section of upper reservoir, transfers the protection through the antithetical couplet of surge shaft and air-vent valve, has effectively reduced the terminal water pressure of reversible pump hydraulic turbine and its rotational speed rate of rise.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a pumped storage and electricity storage system for a dam comprises an upper reservoir 1, a pressure tunnel 2 is arranged at the outlet end of the upper reservoir 1, a surge shaft 3 is arranged on the pressure tunnel 2, a water channel 4 is connected with the downstream section of the pressure tunnel 2, a reversible pump water turbine 5 is arranged at the bottom end of the water channel 4, the water outlet end of the reversible pump turbine 5 is connected with a tail water tunnel 7, a lower reservoir 8 is arranged on the tail water tunnel 7, a bypass flow passage is arranged at the water outlet end of the reversible pump turbine 5, a pressure regulating valve 6 is arranged on the bypass flow passage, the outlet end of the pressure regulating valve 6 is communicated with a tail water tunnel 7, the pressure regulating well 3 comprises a pressure regulating well body 31, a choke 32 and a flow guide block 33, the pressure tunnel 2 is communicated with the pressure regulating well body 31 through the choke 32, the flow guide block 33 is arranged around the top of the throttling opening 32, and the inner side surface of the flow guide block 33 is an arc concave surface.
Further, a speed regulator is arranged on the reversible pump turbine 5, and the speed regulator controls a guide vane of the reversible pump turbine 5 and the pressure regulating valve 6.
Furthermore, the diameter of the pressure regulating valve 6 is 0.8-1.0 m.
Further, the water head difference between the lower reservoir 8 and the upper reservoir 1 is 60-100 m.
The utility model discloses a theory of operation:
the utility model discloses upper reaches department at the dam sets up reservoir 1, install reversible water pump turbine 5 on the dam, set up surge shaft 3 on the rivers export section of upper reservoir 1, the water on the dam has been utilized when the power consumption peak is gone down through pressure tunnel 2 and is located its downstream reversible water pump turbine 5 under the action of gravity, reversible water pump turbine 5 is as power generation facility this moment, and when being located the power consumption valley, the unnecessary electric energy that utilizes reversible water pump turbine 5 to produce drives its water pump operation, precipitation takes out upper reservoir 1 from lower reservoir 8 and stores, then discharge the electricity generation with the water of upper reservoir 1 on daytime next day.
The utility model discloses well air-vent valve 6 receives the speed regulator control on the reversible pump hydraulic turbine 5, makes the stator in air-vent valve 6 and the reversible pump hydraulic turbine 5 be the linkage relation through the speed regulator for when the load of the reversible pump hydraulic turbine 5 changes, when its stator is closed, air-vent valve 6 opens rapidly, makes the reduction of total flow in the reduction system.
After the technical scheme is adopted, the utility model discloses beneficial effect does:
1. the utility model effectively reduces the water flow pressure at the tail end of the reversible water pump turbine and the rotating speed increasing rate thereof through the joint regulation protection of the pressure regulating well and the pressure regulating valve by arranging the pressure regulating well on the outlet section of the upper reservoir and arranging the pressure regulating valve on the outlet bypass channel of the reversible water pump turbine;
2. the utility model discloses the surge shaft that sets up on pressure tunnel adopts impedance formula surge shaft, and through the water conservancy diversion piece device in throttle department, the water level fluctuation amplitude that further makes rivers go into the surge and produce when advancing is less, and the undulant decay is very fast.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a schematic structural diagram of the surge tank 3 of the present invention.
Description of reference numerals: the system comprises an upper reservoir 1, a pressure tunnel 2, a pressure regulating well 3, a pressure regulating well body 31, a choke 32, a flow guide block 33, a water channel 4, a reversible water pump and turbine 5, a pressure regulating valve 6, a tailwater tunnel 7 and a lower reservoir 8.
Detailed Description
Referring to fig. 1 to 2, the technical solution adopted by the present embodiment is: it contains upper reservoir 1, is equipped with pressure tunnel 2 on the exit end of upper reservoir 1, is equipped with surge shaft 3 on pressure tunnel 2, and the downstream section of pressure tunnel 2 is connected with water course 4, is equipped with reversible pump turbine 5 on the bottom of water course 4, and the play water end of reversible pump turbine 5 is connected with tail water tunnel 7, is equipped with down reservoir 8 on the tail water tunnel 7, and the play water end of reversible pump turbine 5 is equipped with the bypass and overflows the passageway, the bypass overflow and be equipped with air-vent valve 6 on the passageway, air-vent valve 6's exit end and tail water tunnel 7 intercommunication, surge shaft 3 contain surge shaft body 31, throttle mouth 32 and water conservancy diversion piece 33, pressure tunnel 2 through throttle mouth 32 and surge shaft body 31 intercommunication, water conservancy diversion piece 33 set up around the top of throttle mouth 32, and water conservancy diversion piece 33's medial surface arc concave surface.
The reversible pump water turbine 5 is provided with a speed regulator, the speed regulator controls a guide vane of the reversible pump water turbine 5 and a pressure regulating valve 6, and the pressure regulating valve 6 is controlled by full oil pressure.
The diameter of the pressure regulating valve 6 is 1.0m, so that when a guide vane of the reversible water pump turbine 5 is quickly closed, the rotating speed rise and the pressure rise of the unit can meet the regulation guarantee requirements.
The water head difference between the lower reservoir 8 and the upper reservoir 1 is 100 m.
This embodiment sets up upper reservoir 1 in the upper reaches department of dam, install reversible pump hydraulic turbine 5 on the dam, set up pressure regulating well 3 on the rivers export section of upper reservoir 1, the water on the dam has been utilized and reversible pump hydraulic turbine 5 that is located its low reaches is rushed down through pressure tunnel 2 under the action of gravity when the power consumption peak, reversible pump hydraulic turbine 5 is as power generation facility this moment, power generation facility sends to transmission line after the transformer conversion, and when being located the power consumption valley, the unnecessary electric energy that utilizes reversible pump hydraulic turbine 5 to produce drives its pump operation, precipitation takes out upper reservoir 1 from lower reservoir 8 and stores, then discharge the electricity generation with the water of upper reservoir 1 on the daytime next day.
In this embodiment, the pressure regulating valve 6 is controlled by a speed regulator on the reversible pump turbine 5, and the pressure regulating valve 6 and the guide vane in the reversible pump turbine 5 are in linkage relationship through the speed regulator, so that when the load of the reversible pump turbine 5 changes, the guide vane is closed, and the pressure regulating valve 6 is rapidly opened, so as to reduce the reduction of the total flow in the system.
After adopting above-mentioned technical scheme, this embodiment beneficial effect does:
1. in the embodiment, the pressure regulating well is arranged on the outlet section of the upper reservoir, the pressure regulating valve is arranged on the outlet bypass channel of the reversible water pump turbine, and the water flow pressure at the tail end of the reversible water pump turbine and the rotating speed rising rate of the reversible water pump turbine are effectively reduced through the joint regulation protection of the pressure regulating well and the pressure regulating valve;
2. the surge shaft that this embodiment set up on the pressure tunnel adopts impedance formula surge shaft, and through the water conservancy diversion piece device at throttle department, the water level fluctuation amplitude that produces when further making rivers enter the surge and advance is less, and the wave attenuation is very fast.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (4)
1. The utility model provides a pumped storage electricity storage system for dam which characterized in that: the pressure regulating device comprises an upper reservoir (1), a pressure tunnel (2) is arranged at the outlet end of the upper reservoir (1), a pressure regulating well (3) is arranged on the pressure tunnel (2), a water channel (4) is connected at the downstream section of the pressure tunnel (2), a reversible water pump turbine (5) is arranged at the bottom end of the water channel (4), a tail water tunnel (7) is connected at the water outlet end of the reversible water pump turbine (5), a lower reservoir (8) is arranged on the tail water tunnel (7), a bypass flow passage is arranged at the water outlet end of the reversible water pump turbine (5), a pressure regulating valve (6) is arranged on the bypass flow passage, the outlet end of the pressure regulating valve (6) is communicated with the tail water tunnel (7), the pressure regulating well (3) comprises a pressure regulating well body (31), a throttling port (32) and a flow guide block (33), the pressure tunnel (2) is communicated with the pressure regulating well body (31) through the throttling port (32), the flow guide block (33) is arranged around the top of the throttling opening (32), and the inner side surface of the flow guide block (33) is an arc-shaped concave surface.
2. The pumped-storage electricity storage system for dams of claim 1, wherein: the reversible water pump turbine (5) is provided with a speed regulator, and the speed regulator controls a guide vane of the reversible water pump turbine (5) and the pressure regulating valve (6).
3. The pumped-storage electricity storage system for dams of claim 1, wherein: the diameter of the pressure regulating valve (6) is 0.8-1.0 m.
4. The pumped-storage electricity storage system for dams of claim 1, wherein: the water head difference between the lower reservoir (8) and the upper reservoir (1) is 60-100 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121347002.XU CN214836838U (en) | 2021-06-17 | 2021-06-17 | Pumped storage electricity storage system for dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121347002.XU CN214836838U (en) | 2021-06-17 | 2021-06-17 | Pumped storage electricity storage system for dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214836838U true CN214836838U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121347002.XU Active CN214836838U (en) | 2021-06-17 | 2021-06-17 | Pumped storage electricity storage system for dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214836838U (en) |
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2021
- 2021-06-17 CN CN202121347002.XU patent/CN214836838U/en active Active
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