CN114382631A - Energy dissipation method and device for hydraulic and hydroelectric engineering - Google Patents

Energy dissipation method and device for hydraulic and hydroelectric engineering Download PDF

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Publication number
CN114382631A
CN114382631A CN202111564275.4A CN202111564275A CN114382631A CN 114382631 A CN114382631 A CN 114382631A CN 202111564275 A CN202111564275 A CN 202111564275A CN 114382631 A CN114382631 A CN 114382631A
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CN
China
Prior art keywords
plate
energy dissipation
intercepting
impeller
intercepting plate
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Pending
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CN202111564275.4A
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Chinese (zh)
Inventor
邹俊杰
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Sichuan Xinyuan Construction Group Co ltd
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Sichuan Xinyuan Construction Group Co ltd
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Priority to CN202111564275.4A priority Critical patent/CN114382631A/en
Publication of CN114382631A publication Critical patent/CN114382631A/en
Pending legal-status Critical Current

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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
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/121—Blades, their form or construction
    • 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
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • 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
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/02—Casings
    • 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
    • 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
    • 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
    • F03B3/183—Adjustable vanes, e.g. wicket gates
    • 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)
  • Hydraulic Turbines (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention discloses an energy dissipation method and device for water conservancy and hydropower engineering, which comprises the following steps: firstly, arranging an intercepting plate which inclines rightwards above the downstream of a dam, then installing a hydraulic support column below the right side of the intercepting plate, supporting and adjusting the right end of the intercepting plate through the hydraulic support column, and adjusting the inclination angle of the intercepting plate so as to adjust the flow direction of a water source on the intercepting plate; and then an impeller and an energy dissipation plate are arranged on the right upper part of the cut-off plate, wherein the impeller is arranged on the oblique upper part of the cut-off plate, the energy dissipation plates are arranged on two sides of the impeller, the energy dissipation plate is obliquely arranged, a generator is arranged on the rear side of the impeller, and energy dissipation treatment is carried out on partial water flow cut off by the cut-off plate through the impeller and the energy dissipation plate. The invention can effectively perform large-amplitude energy dissipation treatment on the water flow, thereby reducing the scouring force of the water flow on the downstream.

Description

Energy dissipation method and device for hydraulic and hydroelectric engineering
Technical Field
The invention relates to the technical field of hydraulic and hydroelectric engineering, in particular to an energy dissipation method and device for hydraulic and hydroelectric engineering.
Background
Along with the development of scientific technology and the progress of human life, people gradually begin to utilize water flow to generate electricity, the electricity generation mode has the advantages of energy conservation, environmental protection, high efficiency and the like, the water energy utilized by hydroelectric power generation is mainly potential energy accumulated in a water body, different types of hydropower stations need to be built for converting the water energy into electric energy, the original river structure can be damaged when the hydropower stations are built, the discharged water flow has high flow velocity and large kinetic energy when the water is drained for electricity generation, and energy dissipation treatment needs to be carried out on a water source for reducing the scouring of a downstream river channel;
most energy dissipation methods and devices for hydraulic and hydroelectric engineering in the market are simple in design, most of the energy dissipation methods and devices can only utilize partial water potential to carry out lateral impact energy dissipation on the rest of the water potential, although the energy dissipation method can achieve the energy dissipation effect, the energy dissipation effect is not ideal, and after actual energy dissipation, a water source still has a high flow speed and can also cause great influence on downstream, so that the energy dissipation method and device for the hydraulic and hydroelectric engineering are provided for solving the problems.
Disclosure of Invention
The invention aims to provide an energy dissipation method and device for water conservancy and hydropower engineering, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an energy dissipation device for water conservancy and hydropower engineering comprises a shutoff plate, a fixed shaft, a hydraulic support column, a fixed seat, a fixed frame, an energy dissipation plate, a generator, an impeller, a guide plate, a support column, an energy dissipation pier and an anechoic chamber; the left side of the bottom end of the intercepting plate is rotatably connected with a fixed shaft through a hinged support, the right side of the bottom end of the intercepting plate is rotatably connected with a hydraulic support column through the hinged support, and the bottom end of the hydraulic support column is rotatably connected with a fixed seat; the fixing frame is obliquely arranged at the right upper part of the intercepting plate, a main shaft of the generator is rotationally connected to the central position of the inner side of the fixing frame, the impeller is arranged on the main shaft of the generator, and the energy dissipation plates are arranged on the fixing frame and positioned at two sides of the impeller; the flow guide plate is obliquely arranged below the fixing frame, supporting columns are uniformly arranged on the bottom surface of the flow guide plate, the left side of the flow guide plate and the right side of the intercepting plate are positioned in the same vertical plane, and the horizontal distance from the right side of the flow guide plate to the right side of the fixing frame is 1 m; the energy dissipation pier (11) is arranged at the lower right side of the guide plate (9).
Furthermore, the fixed shaft is arranged on one fifth of the left side of the intercepting plate, the hydraulic supporting column is arranged on one fifth of the right side of the intercepting plate, and the inclination angle of the intercepting plate can be adjusted to be 15-45 degrees.
Furthermore, the number of the energy dissipation plates is a plurality, the energy dissipation plates are uniformly arranged on two sides of the impeller, and the angle between each energy dissipation plate and the vertical plane is 10 degrees.
Furthermore, the anechoic chamber is arranged at the outer sides of the intercepting plate, the energy dissipation plate, the impeller and the guide plate, and the fixed shaft, the fixed seat, the fixed frame, the generator and the support column are arranged at the inner side of the anechoic chamber.
An energy dissipation method for hydraulic and hydroelectric engineering comprises the following steps:
s1 water source intercepting treatment: firstly, arranging an intercepting plate which inclines rightwards above the downstream of a dam, then installing a hydraulic support column below the right side of the intercepting plate, supporting and adjusting the right end of the intercepting plate through the hydraulic support column, and adjusting the inclination angle of the intercepting plate so as to adjust the flow direction of a water source on the intercepting plate;
s2 intercepting energy dissipation treatment: then an impeller and an energy dissipation plate are arranged on the right upper side of the cut-off plate, wherein the energy dissipation plate is arranged on two sides of the impeller, the energy dissipation plate is arranged in a right-inclined manner from top to bottom, a generator is arranged on the rear side of the impeller, and energy dissipation treatment is carried out on partial water flow cut off by the cut-off plate through the impeller and the energy dissipation plate;
s3 recoil energy dissipation treatment: then, the lower sides of the impeller and the energy dissipation plate are provided with guide plates which are obliquely arranged in a left-low-right-high manner, the bottom surfaces of the guide plates are uniformly provided with support columns, water flows fall on the guide plates on the lower sides due to gravity after rushing towards the impeller and the energy dissipation plate through the intercepting plate, and the water sources are guided by the guide plates, so that the water flows which flow towards the lower left and right without passing through the intercepting plate and do not pass through the intercepting plate are rushed towards the right, and the energy dissipation treatment is carried out on the water flows without passing through the intercepting plate;
s4 wake flow energy dissipation treatment: and finally, the water flow after the back flushing energy dissipation treatment rushes to the energy dissipation pier at the rear side, and the water flow flows to the lower right through the fall after passing through the energy dissipation pier, so that the last energy dissipation treatment is realized.
The invention can effectively carry out large-scale energy dissipation treatment on the water flow by arranging the shutoff plate, the energy dissipation plate, the impeller, the guide plate and the like, thereby reducing the scouring force of the water flow on the downstream.
Drawings
Fig. 1 is a schematic view of the overall structure of the energy dissipater for water conservancy and hydropower engineering provided by the invention.
In the figure: 1. a shutoff plate; 2. a fixed shaft; 3. a hydraulic prop; 4. a fixed seat; 5. a fixed mount; 6. an energy dissipation plate; 7. a generator; 8. an impeller; 9. a baffle; 10. a support pillar; 11. energy dissipation piers; 12. a sound-deadening chamber.
Detailed Description
Example 1
As shown in fig. 1, the energy dissipation device for water conservancy and hydropower engineering provided by this embodiment includes a cut-off plate 1, a fixed shaft 2, a hydraulic support column 3, a fixed seat 4, a fixed mount 5, an energy dissipation plate 6, a generator 7, an impeller 8, a guide plate 9, a support column 10, an energy dissipation pier 11, and an anechoic chamber 12;
the left side of the bottom end of the intercepting plate 1 is connected with a fixing piece arranged in a riverbed through a hinged support and a fixed shaft 2, the right side of the bottom end of the intercepting plate 1 is rotatably connected with a hydraulic support column 3 through the hinged support, the bottom end of the hydraulic support column 3 is rotatably connected with a fixing seat 4, and the fixing seat 4 is connected with the fixing piece arranged in the riverbed. The fixed shaft 2 is arranged at one fifth of the left side of the intercepting plate 1, the hydraulic support column 3 is arranged at one fifth of the right side of the intercepting plate 1, when the flow rate of a water source is large, the retraction of the hydraulic support column 3 is controlled, the inclination angle of the intercepting plate 1 is further driven to be small, the included angle between the intercepting plate and the horizontal plane is adjusted to be 15 degrees, so that the impact force borne by the intercepting plate 1 is reduced, the service life of the device is ensured, the water flow tripping height of the intercepting plate 1 is reduced, and the burden of the energy dissipation plate 6 can be reduced. When the flow rate of a water source is general, the retraction of the hydraulic support column 3 is controlled, so that the inclination angle of the intercepting plate 1 is driven to be moderate, and the included angle between the intercepting plate and the horizontal plane is adjusted to be 30 degrees, so that the impact force borne by the intercepting plate 1 is balanced, and the balance is made between energy dissipation and the service life of the device. When the velocity of flow at water source is less, through the extension of control hydraulic support post 3, and then drive 1 inclination grow of closure plate, adjust the contained angle of closure plate and horizontal plane and be 45 degrees to realize the energy dissipation effect of great degree.
The fixing frame 5 is obliquely arranged at the upper right of the intercepting plate 1, a main shaft of the generator 7 is rotatably connected to the central position of the inner side of the fixing frame 5, the impeller 8 is arranged on the main shaft of the generator 7, the number of the energy dissipation plates 6 is a plurality, and the energy dissipation plates 6 are uniformly arranged on the fixing frame 5 and positioned at two sides of the impeller 8; the angle between the energy dissipation plate 6 and the vertical plane is 10 degrees, and the impact force of the water source is subjected to energy dissipation treatment through the energy dissipation plate 6 and the impeller 8, so that the impact potential energy is reduced.
The guide plate 9 is obliquely arranged below the fixing frame 5, the bottom surface of the guide plate is uniformly provided with the supporting columns 10, the left side of the guide plate 9 and the right side of the intercepting plate 1 are located on the same vertical plane, the horizontal distance from the right side of the guide plate 9 to the right side of the fixing frame 5 is 1m, and the arrangement can guide water flow after energy dissipation, so that the water source without the intercepting plate 1 is guided to perform energy dissipation treatment. The energy dissipation pier 11 is arranged at the lower right side of the guide plate 9, and the subsequent energy dissipation treatment effect is ensured by the arrangement. The silencing chamber 12 is arranged on the outer side of the cut-off plate 1, the energy dissipation plate 6, the impeller 8 and the guide plate 9, and the fixed shaft 2, the fixed seat 4, the fixed frame 5, the generator 7 and the support column 10 are all arranged on the inner side of the silencing chamber 12.
In this embodiment, the fixed mount 5 and the deflector 9 are both mounted on a fixed member in the riverbed downstream of the dam.
Example 2
The energy dissipation method for the hydraulic and hydroelectric engineering provided by the embodiment comprises the following steps:
the method comprises the following steps: water source interception treatment: firstly, arranging an intercepting plate 1 which is inclined rightwards above the downstream of a dam, then installing a hydraulic support column 3 below the right side of the intercepting plate 1, supporting and adjusting the right end of the intercepting plate 1 through the hydraulic support column 3, adjusting the inclination angle of the intercepting plate 1, and further adjusting the flow direction of a water source on the intercepting plate 1;
step two: intercepting and energy dissipating treatment: then an impeller 8 and an energy dissipation plate 6 are arranged on the right upper part of the cut-off plate 1, wherein the energy dissipation plate 6 is arranged on two sides of the impeller 8, the energy dissipation plate 6 is arranged in a right-inclined manner from top to bottom, a generator 7 is arranged on the rear side of the impeller 8, and energy dissipation treatment is carried out on part of water flow intercepted by the cut-off plate 1 through the impeller 8 and the energy dissipation plate 6;
step three: back flushing energy dissipation treatment: then a guide plate 9 which is obliquely arranged from left to right and is low in height is arranged on the lower sides of the impeller 8 and the energy dissipation plate 6, support columns 10 are uniformly arranged on the bottom surface of the guide plate 9, water flows fall on the guide plate 9 on the lower side due to gravity after flowing towards the impeller 8 and the energy dissipation plate 6 through the intercepting plate 1, and the guide plate 9 guides the water flow, so that the water flows towards the right from the left lower side without passing through the intercepting plate 1, and the water flow without passing through the intercepting plate 1 is subjected to energy dissipation treatment;
step four: wake flow energy dissipation treatment: and finally, the water flow after the back flushing energy dissipation treatment rushes to the energy dissipation pier at the rear side, and the water flow flows to the lower right through the fall after passing through the energy dissipation pier, so that the last energy dissipation treatment is realized.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the scope of the present invention.

Claims (5)

1. The utility model provides an energy absorber for hydraulic and hydroelectric engineering which characterized in that: the device comprises a shutoff plate (1), a fixed shaft (2), a hydraulic support column (3), a fixed seat (4), a fixed frame (5), an energy dissipation plate (6), a generator (7), an impeller (8), a guide plate (9), a support column (10), an energy dissipation pier (11) and a silencing chamber (12);
the left side of the bottom end of the intercepting plate (1) is rotatably connected with a fixed shaft (2) through a hinged support, the right side of the bottom end of the intercepting plate (1) is rotatably connected with a hydraulic supporting column (3) through the hinged support, and the bottom end of the hydraulic supporting column (3) is rotatably connected with a fixed seat (4);
the fixing frame (5) is obliquely arranged at the upper right of the intercepting plate (1), a main shaft of the generator (7) is rotatably connected to the central position of the inner side of the fixing frame (5), the impeller (8) is arranged on the main shaft of the generator (7), and the energy dissipation plates (6) are arranged on the fixing frame (5) and located on two sides of the impeller (8);
the guide plate (9) is obliquely arranged below the fixing frame (5), supporting columns (10) are uniformly arranged on the bottom surface of the guide plate, the left side of the guide plate (9) and the right side of the intercepting plate (1) are positioned in the same vertical plane, and the horizontal distance from the right side of the guide plate (9) to the right side of the fixing frame (5) is 1 m;
the energy dissipation pier (11) is arranged at the lower right side of the guide plate (9).
2. The energy dissipater for water conservancy and hydropower engineering according to claim 1, characterized in that: the fixed shaft (2) is arranged on one fifth of the left side of the intercepting plate (1), the hydraulic supporting column (3) is arranged on one fifth of the right side of the intercepting plate (1), and the adjustable inclination angle of the intercepting plate (1) is 15-45 degrees.
3. The energy dissipater for water conservancy and hydropower engineering according to claim 1, characterized in that: the number of the energy dissipation plates (6) is a plurality, the energy dissipation plates (6) are uniformly arranged on two sides of the impeller (8), and the angle between each energy dissipation plate (6) and the vertical plane is 10 degrees.
4. The energy dissipater for water conservancy and hydropower engineering according to claim 1, characterized in that: the silencing chamber (12) is arranged on the outer sides of the intercepting plate (1), the energy dissipation plate (6), the impeller (8) and the guide plate (9), and the fixed shaft (2), the fixed seat (4), the fixed frame (5), the generator (7) and the support column (10) are all arranged on the inner side of the silencing chamber (12).
5. An energy dissipation method for hydraulic and hydroelectric engineering is characterized in that: the method comprises the following steps:
s1 water source intercepting treatment: firstly, arranging an intercepting plate (1) which is inclined rightwards above the downstream of a dam, then installing a hydraulic support column (3) below the right side of the intercepting plate (1), supporting and adjusting the right end of the intercepting plate (1) through the hydraulic support column (3), adjusting the inclination angle of the intercepting plate (1), and further adjusting the water source flowing direction on the intercepting plate (1);
s2 intercepting energy dissipation treatment: then an impeller (8) and an energy dissipation plate (6) are arranged on the right upper side of the intercepting plate (1), wherein the energy dissipation plate (6) is arranged on two sides of the impeller (8), the energy dissipation plate (6) is arranged in a right-inclined manner from top to bottom, a generator (7) is arranged on the rear side of the impeller (8), and energy dissipation treatment is carried out on partial water flow intercepted by the intercepting plate (1) through the impeller (8) and the energy dissipation plate (6);
s3 recoil energy dissipation treatment: then, a guide plate (9) which is obliquely arranged from low left to high right is arranged on the lower side of the impeller (8) and the energy dissipation plate (6), support columns (10) are uniformly arranged on the bottom surface of the guide plate (9), water flows through the intercepting plate (1) and then towards the impeller (8) and the energy dissipation plate (6) and then falls onto the guide plate (9) on the lower side due to gravity, and the guide plate (9) guides the water source, so that the water flows towards the lower left and towards the right without passing through the intercepting plate (1), and the water flow which does not pass through the intercepting plate (1) is subjected to energy dissipation treatment;
s4 wake flow energy dissipation treatment: and finally, the water flow after the back flushing energy dissipation treatment rushes to the energy dissipation pier (11) at the rear side, and the water flow flows to the lower right through the fall after passing through the energy dissipation pier (11), so that the last energy dissipation treatment is realized.
CN202111564275.4A 2021-12-20 2021-12-20 Energy dissipation method and device for hydraulic and hydroelectric engineering Pending CN114382631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111564275.4A CN114382631A (en) 2021-12-20 2021-12-20 Energy dissipation method and device for hydraulic and hydroelectric engineering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111564275.4A CN114382631A (en) 2021-12-20 2021-12-20 Energy dissipation method and device for hydraulic and hydroelectric engineering

Publications (1)

Publication Number Publication Date
CN114382631A true CN114382631A (en) 2022-04-22

Family

ID=81198633

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111564275.4A Pending CN114382631A (en) 2021-12-20 2021-12-20 Energy dissipation method and device for hydraulic and hydroelectric engineering

Country Status (1)

Country Link
CN (1) CN114382631A (en)

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