CN112228270A - Hydropower station tail water secondary power generation device - Google Patents

Hydropower station tail water secondary power generation device Download PDF

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Publication number
CN112228270A
CN112228270A CN202011253028.8A CN202011253028A CN112228270A CN 112228270 A CN112228270 A CN 112228270A CN 202011253028 A CN202011253028 A CN 202011253028A CN 112228270 A CN112228270 A CN 112228270A
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China
Prior art keywords
floating body
hydropower station
generator set
power generation
generation device
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Pending
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CN202011253028.8A
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Chinese (zh)
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沈福昌
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Individual
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Individual
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Priority to CN202011253028.8A priority Critical patent/CN112228270A/en
Publication of CN112228270A publication Critical patent/CN112228270A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/08—Machine or engine aggregates in dams or the like; Conduits therefor, e.g. diffusors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/16—Stators
    • F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433—Floating structures carrying electric power plants
    • B63B2035/4466—Floating structures carrying electric power plants for converting water energy into electric energy, e.g. from tidal flows, waves or currents
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Hydraulic Turbines (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention discloses a hydropower station tail water secondary power generation device, which comprises an impeller and a generator; the water power station tail water flows out of the front branch diversion water channel and the rear branch diversion water channel to respectively drive the impellers in the front row of the power generating sets and the impellers in the rear row of the power generating sets to rotate, and the rotation directions of the impellers in the front row of the power generating sets and the impellers in the rear row of the power generating sets are opposite. The invention does not need to be installed on a dam body, and does not need to be fixed by a pile foundation or anchored, and can utilize the maximum fall potential energy of tail water to generate electricity.

Description

Hydropower station tail water secondary power generation device
Technical Field
The invention relates to a hydropower station power generation device, in particular to a device for secondary power generation by using tail water of a hydropower station, and belongs to the technical field of hydroelectric power generation.
Background
China is one of countries with abundant hydraulic resources in the world and is also one of countries with large installed capacity of water and electricity, numerous hydropower stations are distributed all over the country, in the existing hydropower stations, tail water discharged by a primary generator set has quite large water pressure, the flow and the water pressure are quite stable, secondary power generation is carried out on the residual tail water potential energy after the primary hydraulic power generation, and precious hydraulic resources can be fully and fully utilized.
The existing hydropower station tail water secondary power generation device, such as the Chinese utility model patent, a structure disclosed in patent No. 200520001130.3, includes that each water wheel and cross shaft are fixedly installed between every two tile seats, each tile seat is fixed on the dam body of the dam by bolts, the cross shaft and the cross shaft are connected with each other by flange discs, bevel gears fixed on the cross shaft are crossed at 90 degrees with bevel gears installed on the lower head of the transmission shaft, each pair of bevel gears are installed and fixed in bevel gear boxes, the bevel gear boxes are fixed on the dam body of the dam, the middle of the transmission shaft is supported by at least one tile seat which is fixed with the dam body of the dam by bolts, the lower head end surface of each anti-string sleeve sleeved on the transmission shaft is contacted with the upper plane of the bearing in the corresponding tile seat, the lower head end surface of each anti-string sleeve is contacted with the upper plane of the bearing in the corresponding tile seat, the middle position of each anti-string sleeve is provided with a round hole which is matched with the through pin and is arranged on the transmission shaft, the flange plate at the upper head part of each transmission shaft is connected with the flange plate at the lower head part of the generator, the base of the generator is fixed with the dam body of the dam by using bolts, the installation height of each generator is basically consistent with that of the original generator, a weather enclosure is correspondingly arranged right above each generator, and the transverse shaft of the system and the axis of the transmission shaft are approximately parallel to the surface of the dam. Although the secondary power generation device can utilize the residual tail water resource after the hydraulic turbine of the hydropower station generates electricity to carry out secondary power generation, the purpose that the original hydropower station can not fully utilize the hydraulic resource is achieved, the secondary power generation device with the structure has the following three defects in the use process: (1) because each generator base, each tile base and the bevel gear box body base are fixed on the dam body of the dam by bolts, when the generator bases are installed, more installation holes need to be drilled on the dam body, and therefore the dam body is damaged, and the safety performance of the dam body is affected; (2) the device adopts more parts, the whole equipment is huge, the structure is complex, the manufacturing, using and installing costs are high, the installation is difficult, and time and labor are wasted; (3) the water wheels are arranged on the dam body, so that the power generation can not be carried out by utilizing the maximum fall potential energy of tail water, and the power generation capacity is greatly reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the hydropower station tail water secondary power generation device which has the advantages of simple structure, low equipment investment and operation cost, no need of installation on a dam body, no need of pile foundation fixation or anchor fixation, capability of generating power by utilizing the maximum fall potential energy of tail water, capability of greatly improving the generated energy and low manufacturing and using cost.
In order to solve the technical problem, the invention adopts the hydropower station tail water secondary power generation device which comprises an impeller and a generator; the rotation shaft of the impeller is connected with the rotation shaft of the generator, the impeller and the generator are combined to form a generator set, the hydropower station tail water secondary power generation device further comprises a floating body and a diversion water tank arranged on the floating body, the floating body is arranged on the water surface at the bottom of the hydropower station, a front-row generator set and a rear-row generator set which are formed by arranging a plurality of generator sets are arranged on the floating body, the front-row generator set and the rear-row generator set are arranged in parallel along the length direction of the floating body, the impeller in the front-row generator set and the impeller in the rear-row generator set are symmetrically arranged in the width direction of the floating body, the diversion water tank is provided with a main diversion water tank arranged along the length direction of the floating body and a plurality of front branch diversion water tanks and a plurality of rear branch diversion water tanks which are arranged in pairs at the bottom of the main diversion water tank and are symmetrically arranged in the width direction of And when the tail water of the hydropower station flows out from the front branch diversion water tank and the rear branch diversion water tank to drive the impellers in the front row of generating sets and the impellers in the rear row of generating sets to rotate respectively, the rotating directions of the impellers in the front row of generating sets and the impellers in the rear row of generating sets are opposite.
In a preferred embodiment of the present invention, the cross section of the floating body is trapezoidal, the shell of the floating body is surrounded by stainless steel plates, and the shell of the floating body is filled with a lightweight foam material.
As a preferred embodiment of the present invention, the lightweight foamed material is a polyethylene foam or a polyurethane foam.
As a preferred embodiment of the present invention, a cross-sectional shape of a joint of the main water flowing groove, the front branch water guiding groove and the rear branch water guiding groove is an inverted Y shape.
In a preferred embodiment of the present invention, a propeller driven by a motor is further installed on the floating body, and the motor is connected with an electric controller on a hydropower station or a land through a wireless signal.
In a preferred embodiment of the present invention, a position sensor is further mounted on the floating body, and the position sensor is connected with an electric controller on a hydropower station or a land through a wireless signal.
In the invention, the electric controller is preferably a PLC programmable controller or a digital controller.
After adopting the structure, the invention has the following beneficial effects:
the floating body provided with the secondary generator set is directly arranged on the water surface at the bottom of the hydropower station, so that on one hand, the height of the fall between the secondary generator set and the primary generator set at the top of the hydropower station is the largest, and the secondary generator set can generate electricity by utilizing the largest fall potential energy of tail water, thereby greatly improving the generating capacity; on the other hand, the secondary generator set does not need to be installed on the dam body, so that the installation hole can be prevented from being drilled on the dam body, and the defects that the dam body is damaged and the safety of the dam body is influenced in the prior art are effectively avoided.
The invention arranges a front row generator set and a rear row generator set which are arranged in parallel on a floating body, impellers in the front row generator set and impellers in the rear row generator set are symmetrically arranged in the width direction of the floating body, a diversion flume is arranged on the floating body, the diversion flume is provided with a main diversion flume and a plurality of paired front branch diversion flumes and rear branch diversion flumes, the paired front branch diversion flumes and rear branch diversion flumes are respectively arranged corresponding to the impellers in the front row generator set and the impellers in the rear row generator set, when in operation, tail water of a hydropower station firstly enters the main diversion flume and then respectively flows out from the front branch diversion flume and the rear branch diversion flume, the tail water flowing out from the front branch diversion flume and the tail water flowing out from the rear branch diversion flume respectively drive the impellers in the front row generator set and the impellers in the rear row generator set to rotate, and the impellers in the front row generator set and the rear row generator set rotate, therefore, the force of the floating body relative to the fore-and-aft direction of tail water is always kept balanced, so that the floating body cannot move back and forth on the water surface, and the floating body can continuously generate electricity without fixing a pile foundation or anchoring or fixing in other modes.
The floating body is provided with the propeller, so that when the strength of tail water changes, and the front and rear positions of a tail water falling point relative to the main water flowing groove change, the electric controller can control the motor to drive the propeller to work, so that the floating body moves front and back, the position of the main water flowing groove relative to the tail water is adjusted, and the tail water falling point is positioned in the main water flowing groove. In the invention, the distance of the floating body moving back and forth is preferably monitored in real time through the position sensor, so that accurate movement is realized.
The invention has the advantages of fewer parts, simple structure, simple and convenient manufacture and low cost, and greatly reduces the equipment investment and the operating cost.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a hydropower station tail water secondary power generation device.
Fig. 2 is a schematic plan view of the hydropower station tail water secondary power generation device of the invention.
Fig. 3 is a schematic view of an installation structure of a front-row generator set, a rear-row generator set and a diversion water tank according to the present invention.
Fig. 4 is a side view of fig. 3.
Fig. 5 is a schematic top view of the floating body according to the present invention.
Fig. 6 is a schematic cross-sectional view taken along line D-D in fig. 5.
Detailed Description
Referring to fig. 1 to 6, the hydropower station tail water secondary power generation device comprises an impeller 1 and a generator 2; the rotation shaft of the impeller 1 is connected with the rotation shaft of the generator 2, the impeller 1 and the generator 2 are combined to form a generator set A, the hydropower station tail water secondary power generation device further comprises a floating body 3 and a diversion water tank 4 arranged on the floating body 3, the floating body 3 is preferably in a ship shape or a rectangular shape with equal length, the floating body 3 is arranged on the water surface at the bottom of the hydropower station, a front-row generator set B and a rear-row generator set C which are formed by arranging a plurality of generator sets A are arranged on the floating body 3, the front-row generator set B and the rear-row generator set C are arranged in parallel along the length direction of the floating body 3, the impeller 1 in the front-row generator set B and the impeller 1 in the rear-row generator set C are symmetrically arranged in the width direction of the floating body 3, the diversion water tank 4 is provided with a main diversion water tank 4-1 arranged along the length direction of the floating body 3 and a plurality of front-branch diversion water 2 and a rear branch diversion flume 4-3, wherein the main diversion flume 4-1 is preferably fixedly arranged on the floating body 3 by a V-shaped support plate 7 through bolts or welding, the front branch diversion flume 4-2 and the rear branch diversion flume 4-3 which are arranged in pairs are arranged at intervals along the length direction of the main diversion flume 4-1, the front branch diversion flume 4-2 and the rear branch diversion flume 4-3 which are arranged in pairs are respectively arranged corresponding to the impeller 1 in the front row of generating set B and the impeller 1 in the rear row of generating set C, and when the tail water 8 of the hydropower station flows out of the front branch diversion flume 4-2 and the rear branch diversion flume 4-3 to respectively drive the impeller 1 in the front row of generating set B and the impeller 1 in the rear row of generating set C to rotate, the rotation directions of the impeller 1 in the front row of generating set B and the impeller 1 in the rear row of generating. In implementation, as shown in fig. 3 and 4, the water outlet of the front branch diversion water tank 4-2 can be directed to the rear side of the impeller 1 in the front-row generator set B, so that the tail water flowing out of the front branch diversion water tank 4-2 drives the impeller 1 in the front-row generator set B to rotate counterclockwise, and the water outlet of the rear branch diversion water tank 4-3 is directed to the front side of the impeller 1 in the rear-row generator set C, so that the tail water flowing out of the rear branch diversion water tank 4-3 drives the impeller 1 in the rear-row generator set C to rotate clockwise, and the rotation directions of the two are opposite, so that the force of the floating body 3 relative to the front and rear directions of the tail water is always kept; of course, the water outlet of the front branch diversion water tank 4-2 may also face the front side of the impeller 1 in the front row generator set B, so that the tail water flowing out of the front branch diversion water tank 4-2 drives the impeller 1 in the front row generator set B to rotate clockwise, and the water outlet of the rear branch diversion water tank 4-3 faces the rear side of the impeller 1 in the rear row generator set C, so that the tail water flowing out of the rear branch diversion water tank 4-3 drives the impeller 1 in the rear row generator set C to rotate counterclockwise, which is not shown in the figure.
As shown in fig. 3, 5 and 6, the cross section of the floating body 3 is trapezoidal, the shell of the floating body 3 is surrounded by a stainless steel plate 3-1, the shell of the floating body 3 is filled with a light foaming material 3-2, and during implementation, the front-row generator set B and the rear-row generator set C can be fixedly connected with the stainless steel plate 3-1 through connecting pieces such as bolts and the like, which are not shown in the figure. In the present invention, the floating body 3 may have a shape of an elongated trapezoid, a rectangular body, or the like.
As a preferred embodiment of the present invention, the lightweight foamed material 3-2 is a polyethylene foam or a polyurethane foam.
As a preferred embodiment of the invention, the cross section of the joint of the main water guiding groove 4-1, the front branch water guiding groove 4-2 and the rear branch water guiding groove 4-3 is in an inverted Y shape.
In a preferred embodiment of the present invention, a propeller 5 driven by a motor is further installed on the floating body 3, and the motor is connected with an electric controller on a hydropower station or on land through a wireless signal. When the floating body 3 moves forwards and backwards, the position of the main water flowing groove 4-1 relative to the tail water 8 is adjusted, and the water falling point of the tail water 8 is located in the main water flowing groove 4-1, wherein the motor and the electric controller are not shown in the figure.
In a preferred embodiment of the present invention, a position sensor 6 is further mounted on the floating body 3, and the position sensor 6 is connected with an electric controller on a hydropower station or a land through a wireless signal. When the device works, the distance of the floating body 3 moving back and forth can be monitored in real time through the position sensor 6, so that accurate movement is realized.
In the present invention, the electric controller is preferably a PLC programmable controller or a digital controller such as a DDC digital controller.
When in use, the hydropower station tail water secondary power generation device can be directly placed on the water surface 10 at the bottom of a hydropower station 9 or a dam and the like, and the water falling point of the tail water 8 is positioned in the main water flowing groove 4-1, so that continuous power generation can be carried out, and the hydropower station tail water secondary power generation device is convenient to use.

Claims (7)

1. A hydropower station tail water secondary power generation device comprises an impeller (1) and a generator (2); the pivot of impeller (1) is connected with the pivot of generator (2), and impeller (1) forms a generating set (A) with generator (2) combination, its characterized in that: the hydropower station tail water secondary power generation device further comprises a floating body (3) and a diversion water tank (4) arranged on the floating body (3), the floating body (3) is arranged on the water surface at the bottom of the hydropower station, a front row generator set (B) and a rear row generator set (C) which are formed by arranging a plurality of generator sets (A) are arranged on the floating body (3), the front row generator set (B) and the rear row generator set (C) are arranged in parallel along the length direction of the floating body (3), an impeller (1) in the front row generator set (B) and an impeller (1) in the rear row generator set (C) are symmetrically arranged in the width direction of the floating body (3), the diversion water tank (4) is provided with a main diversion water tank (4-1) arranged along the length direction of the floating body (3) and a plurality of front branch diversion water tanks (4-2) and rear branch diversion water tanks (4-2) which are arranged in pairs at the bottom of the main diversion water tank (4-1) and are symmetrically arranged in the width direction 3) The front branch diversion water tanks (4-2) and the rear branch diversion water tanks (4-3) which are arranged in pairs are arranged at intervals along the length direction of the main diversion water tank (4-1), the front branch diversion water tanks (4-2) and the rear branch diversion water tanks (4-3) which are arranged in pairs are respectively arranged corresponding to the impellers (1) in the front row generator set (B) and the impellers (1) in the rear row generator set (C), and when the tail water of the hydropower station flows out of the front branch diversion water tanks (4-2) and the rear branch diversion water tanks (4-3) to respectively drive the impellers (1) in the front row generator set (B) and the impellers (1) in the rear row generator set (C) to rotate, the rotation directions of the impellers (1) in the front row generator set (B) and the impellers (1) in the rear row generator set (C) are opposite.
2. The hydropower station tail water secondary power generation device according to claim 1, characterized in that: the cross section of the floating body (3) is trapezoidal, the shell of the floating body (3) is surrounded by stainless steel plates, and the shell of the floating body (3) is filled with light foaming materials.
3. The hydropower station tail water secondary power generation device according to claim 2, characterized in that: the light foaming material is polyethylene foam plastic or polyurethane foam plastic.
4. The hydropower station tail water secondary power generation device according to claim 1, characterized in that: the cross section of the joint of the main water guiding groove (4-1), the front branch water guiding groove (4-2) and the rear branch water guiding groove (4-3) is in an inverted Y shape.
5. The hydropower station tail water secondary power generation device according to any one of claims 1 to 4, characterized in that: a propeller (5) driven by a motor is also arranged on the floating body (3), and the motor is connected with an electric controller on a hydropower station or land through a wireless signal.
6. The hydropower station tail water secondary power generation device according to claim 5, characterized in that: and a position sensor (6) is also arranged on the floating body (3), and the position sensor (6) is connected with an electric controller on a hydropower station or a land through a wireless signal.
7. The hydropower station tail water secondary power generation device according to claim 5, characterized in that: the electric controller is a PLC programmable controller or a digital controller.
CN202011253028.8A 2020-11-11 2020-11-11 Hydropower station tail water secondary power generation device Pending CN112228270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011253028.8A CN112228270A (en) 2020-11-11 2020-11-11 Hydropower station tail water secondary power generation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011253028.8A CN112228270A (en) 2020-11-11 2020-11-11 Hydropower station tail water secondary power generation device

Publications (1)

Publication Number Publication Date
CN112228270A true CN112228270A (en) 2021-01-15

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ID=74123100

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011253028.8A Pending CN112228270A (en) 2020-11-11 2020-11-11 Hydropower station tail water secondary power generation device

Country Status (1)

Country Link
CN (1) CN112228270A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112901402A (en) * 2021-03-24 2021-06-04 赵荣 Secondary hydroelectric generation equipment and method for water outlet of three gorges dam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112901402A (en) * 2021-03-24 2021-06-04 赵荣 Secondary hydroelectric generation equipment and method for water outlet of three gorges dam

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