CN114576065B - Water pump turbine runner with turn-around characteristic - Google Patents
Water pump turbine runner with turn-around characteristic Download PDFInfo
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- CN114576065B CN114576065B CN202210206688.3A CN202210206688A CN114576065B CN 114576065 B CN114576065 B CN 114576065B CN 202210206688 A CN202210206688 A CN 202210206688A CN 114576065 B CN114576065 B CN 114576065B
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- blade
- runner
- pressure side
- rotating wheel
- water pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000013461 design Methods 0.000 abstract description 10
- 238000005452 bending Methods 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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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
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention provides a water pump turbine runner with a bending and twisting characteristic, and belongs to the field of hydroelectric power generation equipment. The problem that the existing water pump turbine cannot meet the requirements of simultaneously controlling hump characteristics and S characteristics in a single design space is solved. The water pump turbine comprises an upper crown, a lower ring and a plurality of runner blades, the runner blades are arranged along the Z axis of the rotating shaft and arranged between the upper crown and the lower ring, the runner blades take the rotating direction of the water pump as the positive direction, the side edges at the two ends of the runner blades are respectively a runner blade high-pressure edge and a runner blade low-pressure edge, the runner blade high-pressure edge is projected on the axial plane to be a straight line or a secondary curve or an arc which is not parallel to the Z axis, the runner blade high-pressure edge is projected on the cylindrical surface to be a straight line or a secondary curve or an arc which is not parallel to the Z axis, and the blade placing angles of the runner blades are linearly distributed along the extending direction of the runner blade high-pressure edge. It is mainly used for the rotating wheel of water pump and water turbine.
Description
Technical Field
The invention belongs to the field of hydroelectric power generation equipment, and particularly relates to a water pump turbine runner with a twisting and sweeping characteristic.
Background
The pumped storage unit operates to generate power under the working condition of a water turbine when the power consumption of the power grid is high, so that the pressure of the power grid is reduced; and the energy storage system operates under the working condition of a water pump when electricity is used in a valley, and stores the surplus energy consumption in the power grid in the form of water potential energy. In the current form, the installed capacity of new energy sources (such as wind energy, solar energy and the like) is increased year by year, and the fluctuation of a power grid is also increased, so that the pump storage unit is more frequently switched between the working condition of a water pump and the working condition of a water turbine in order to ensure the stability of the power grid, and therefore, the rated working condition operation efficiency of the pump storage unit is improved, and the unstable characteristic of the pump storage unit is particularly important.
As the core component of the pumped storage unit, the water pump turbine has two typical unstable characteristics of hump characteristics and S-shaped characteristics when the water pump working condition and the water turbine working condition are operated, and researches show that the two unstable characteristics are closely related to the transient process stability of the water pump turbine. In recent years, pumped storage power stations are evolving toward ultra-high heads and low specific speeds. With the development of the pumped-storage unit, the water pump turbine is inevitably switched between different operation conditions more frequently, and the existence of the two unstable areas under the ultra-high head operation condition brings greater challenges to the safe and stable operation of the pumped-storage unit.
The research shows that the hump characteristic and the S characteristic are related to complex flow field change in the no-leaf area of the water pump turbine. The high-pressure side of the runner of the water pump turbine is used as an inlet of a bladeless area under the working condition of the pump, and the design of an outlet of the bladeless area under the working condition of the water turbine is related to the performance of the whole unit. In the conventional design, the design parameters related to the high-pressure side of the runner of the water pump turbine are single, and the requirement of simultaneously controlling hump characteristics and S characteristics cannot be met in a single design space.
Disclosure of Invention
In view of this, the present invention aims to provide a water pump turbine runner with a twist and sweep characteristic, so as to solve the problem that the existing water pump turbine cannot meet the requirements of controlling hump characteristics and S characteristics at the same time in a single design space.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a water pump hydraulic turbine runner with turn-around characteristic, the water pump hydraulic turbine includes crown, lower ring and runner blade, runner blade quantity is a plurality of, and a plurality of runner blades are arranged along rotation axis Z axle and set up between crown and lower ring, runner blade uses the water pump rotation direction as the positive direction, runner blade both ends side is runner blade high-pressure side and runner blade low-pressure side respectively, runner blade high-pressure side is projected as straight line or secondary curve or circular arc that is not parallel with the Z axle at the axial face, runner blade high-pressure side is projected and is expanded as straight line or secondary curve or circular arc that is not parallel with the Z axle at the face of cylinder, runner blade's blade setting angle is along runner blade high-pressure side exhibition linear distribution.
Further, the projection geometry of the high-pressure edge of the rotating wheel blade projected on the axial plane is defined by the diameter D of the crown of the high-pressure edge of the rotating wheel blade A Diameter D at midpoint of high-pressure side of runner blade B And diameter D of lower ring of high-pressure side of runner blade C Three parameters are controlled.
Further, the diameter D of the high-pressure upper crown of the runner blade A Diameter D at midpoint of high-pressure side of runner blade B And diameter D of lower ring of high-pressure side of runner blade C The range of the value of (2) is 0.80-0.9D 0 ，D 0 The circle diameter is distributed for the movable guide vane.
Further, the projection geometry of the high-pressure edge of the rotating wheel blade projected on the cylindrical surface is defined by the circumferential position coordinate theta of the crown of the high-pressure edge of the rotating wheel blade A Circumferential position coordinate theta at midpoint of high-pressure side of runner blade B And the circumferential position coordinate theta of the lower ring of the high-pressure side of the runner blade C Three parameters are controlled.
Further, the circumferential position coordinate theta of the high-pressure upper crown part of the runner blade A Circumferential position coordinate theta at midpoint of high-pressure side of runner blade B And the circumferential position coordinate theta of the lower ring of the high-pressure side of the runner blade C The value of (2) satisfies the following conditionθ max 、θ min Respectively is theta A 、θ B 、θ C Maximum and minimum of (B) 0 D is the height of the high-pressure side of the runner blade 0 The circle diameter is distributed for the movable guide vane.
Further, the blade setting angle of the runner blade passes through the runner bladeBlade mounting angle beta at upper crown of high-pressure edge of sheet A And a blade placing angle beta at the lower ring of the high-pressure edge of the rotating wheel blade C And controlling.
Further, the blade placement angle beta at the high-pressure upper crown of the rotating wheel blade A And a blade placing angle beta at the lower ring of the high-pressure edge of the rotating wheel blade C Satisfy |beta A -β C |≤10°。
Further, the high-pressure side of the runner blade is chamfered with an elliptical angle.
Further, the ellipticity of the ellipticity angle varies from 1 to 10.
Compared with the prior art, the invention has the beneficial effects that: in the conventional design, the high-pressure side position of the rotating wheel is the origin of the circumferential position. The invention adjusts the linear distribution rule of the setting angle on the high-pressure side of the runner blade and changes the ellipticity of the high-pressure side of the runner blade by controlling the curve shape of the projection expansion of the high-pressure side of the runner blade on the axial plane and the high-pressure side cylindrical plane, thereby achieving the purpose of parameterizing the high-pressure side of the runner of the water pump turbine. Numerical simulation results prove that the optimal design of the invention provides the runner with the characteristics of skimming, bending and torsion, so that the hydraulic loss in a vaneless area and a runner basin under the design working condition can be reduced, and the running efficiency of the water pump and the water turbine can be further improved; the law of the hydraulic loss along with the change of the flow is changed, so that the unstable characteristic of the working condition S of the water turbine and the unstable characteristic of the working condition hump of the water pump are reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of an assembly structure of a water pump turbine runner according to the present invention;
FIG. 2 is a schematic view of the axial plane structure of a conventional runner blade of the pump turbine according to the present invention;
FIG. 3 is a schematic view of the axial plane structure of a turbine runner blade of a pump turbine with twist and sweep characteristics according to the present invention;
fig. 4 is a schematic view of a cylindrical surface projection of a conventional runner blade of the water pump turbine according to the present invention;
FIG. 5 is a perspective view of a cylindrical surface of a turbine runner blade of the pump with twist and sweep characteristics according to the present invention;
FIG. 6 is a schematic view of a conventional blade Z-Y plane of the pump turbine according to the present invention;
FIG. 7 is a schematic view of the Z-Y plane of a turbine runner blade of the pump with torsional characteristics according to the present invention;
FIG. 8 is a schematic view of a high-pressure side inverted elliptical angle of a runner blade of a water pump turbine according to the present invention;
FIG. 9 is a schematic view of the Z-Y plane of a pump turbine runner blade with twist sweep feature according to the present invention;
FIG. 10 is a schematic view of a conventional blade Z-X of a pump turbine according to the present invention;
FIG. 11 is a schematic view of the Z-X plane of a pump turbine runner blade with twist sweep feature according to the present invention;
FIG. 12 is a schematic view of a movable guide vane distribution circle of a water pump turbine according to the present invention;
FIG. 13 is a schematic view of a high pressure side mounting angle of a turbine runner blade of a pump turbine according to the present invention;
fig. 14 is a second schematic view of a high-pressure side mounting angle of a runner blade of a water pump turbine according to the present invention.
1-upper crown, 2-lower ring, 3-blade, 4-runner blade high-pressure side and 5-runner blade low-pressure side.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, in the case of no conflict, embodiments of the present invention and features of the embodiments may be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-14 for illustrating the present embodiment, a water pump turbine runner with twist sweep characteristics includes a crown 1, a lower ring 2, and runner blades 3, where the number of runner blades 3 is plural, and plural runner blades 3 are arranged along a Z axis of a rotation axis and are disposed between the crown 1 and the lower ring 2, the runner blades 3 use a rotation direction of the water pump as a positive direction, two end sides of the runner blades 3 are respectively a runner blade high-pressure side 4 and a runner blade low-pressure side 5, and the runner blade high-pressure side 4 is a water inlet side running under a working condition of the water turbine, and a water outlet side running under a working condition of the water pump. The purpose of increasing the design space of the water pump turbine runner is achieved by proposing to control the geometric shape parameters and the parameter variation range of the high-pressure side 4 of the runner blade.
The connection point of the high-pressure side 4 of the runner blade and the upper crown 1 is A point, the connection point of the high-pressure side 4 of the runner blade and the lower ring 2 is C point, the midpoint between the A point and the C point is B point, the projection of the high-pressure side 4 of the runner blade on the axial plane is a straight line, a secondary curve or an arc which is not parallel to the Z axis, and the blade has the characteristic of glancing. The high-pressure edge 4 of the runner blade is projected and unfolded on the cylindrical surface to form a straight line, a secondary curve or an arc which is not parallel to the Z axis, and the blade has the characteristic of bending. The blade setting angles of the runner blades 3 are linearly distributed along the spanwise direction of the high-pressure edges 4 of the runner blades, and the blades have torsion characteristics.
The projection geometry of the high-pressure edge 4 of the rotating wheel blade projected on the axial plane is defined by the diameter D of the crown part of the high-pressure edge of the rotating wheel blade A Diameter D at midpoint of high-pressure side of runner blade B And diameter D of lower ring of high-pressure side of runner blade C Three parameters are controlled, and the diameter D of the high-pressure upper crown of the runner blade A Diameter D at midpoint of high-pressure side of runner blade B And diameter D of lower ring of high-pressure side of runner blade C The range of the value of (2) is 0.80-0.9D 0 ，D 0 The circle diameter is distributed for the movable guide vane.
The projection geometry of the projection of the high-pressure edge 4 of the runner blade on the cylindrical surface is represented by the circumferential position coordinate theta of the crown part of the high-pressure edge of the runner blade A Circumferential position coordinate theta at midpoint of high-pressure side of runner blade B And the circumferential position coordinate theta of the lower ring of the high-pressure side of the runner blade C Three parameters are controlled, and circumferential position coordinates theta of high-pressure edge crowns of runner blades A Circumferential position coordinate theta at midpoint of high-pressure side of runner blade B And the circumferential position coordinate theta of the lower ring of the high-pressure side of the runner blade C The value of (2) satisfies the following conditionθ max 、θ min Respectively is theta A 、θ B 、θ C Maximum and minimum of (B) 0 D is the height of the high-pressure side 4 of the runner blade 0 The circle diameter is distributed for the movable guide vane.
The blade setting angle of the runner blade 3 passes through the blade setting angle beta at the crown of the high-pressure edge of the runner blade A And a blade placing angle beta at the lower ring of the high-pressure edge of the rotating wheel blade C Control is carried out on the blade placing angle beta at the high-pressure edge crown of the rotating wheel blade A And a blade placing angle beta at the lower ring of the high-pressure edge of the rotating wheel blade C Satisfy |beta A -β C |≤10°。
The high-pressure side 4 of the runner blade is chamfered with an elliptic angle, and the change range of the elliptic rate of the elliptic angle is 1-10.
The embodiments of the invention disclosed above are intended only to help illustrate the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention.
Claims (7)
1. The utility model provides a water pump hydroturbine runner with turn-around characteristic, the water pump hydroturbine includes crown (1), lower ring (2) and runner blade (3), runner blade (3) quantity is a plurality of, and a plurality of runner blades (3) are arranged and are set up between crown (1) and lower ring (2) along rotation axis Z axle, runner blade (3) use water pump rotation direction to be the positive direction, its characterized in that: the two end side edges of the rotating wheel blade (3) are respectively a rotating wheel blade high-pressure side (4) and a rotating wheel blade low-pressure side (5), the rotating wheel blade high-pressure side (4) is projected to be a straight line or a secondary curve or an arc which is not parallel to the Z axis on the axial plane, the rotating wheel blade high-pressure side (4) is projected to be a cylindrical surface to be unfolded to be a straight line or a secondary curve or an arc which is not parallel to the Z axis, and the blade placing angle of the rotating wheel blade (3) is along the unfolding direction line of the rotating wheel blade high-pressure side (4)Sex distribution, the projection geometry of the high-pressure edge (4) of the rotating wheel blade projected on the cylindrical surface is defined by circumferential position coordinates theta of the crown of the high-pressure edge of the rotating wheel blade A Circumferential position coordinate theta at midpoint of high-pressure side of runner blade B And the circumferential position coordinate theta of the lower ring of the high-pressure side of the runner blade C Three parameters are controlled, and the circumferential position coordinate theta of the crown on the high-pressure side of the rotating wheel blade A Circumferential position coordinate theta at midpoint of high-pressure side of runner blade B And the circumferential position coordinate theta of the lower ring of the high-pressure side of the runner blade C The value of (2) satisfies the following conditionθ max 、θ min Respectively is theta A 、θ B 、θ C Maximum and minimum of (B) 0 D is the height of the high-pressure side (4) of the runner blade 0 The circle diameter is distributed for the movable guide vane.
2. A pump turbine runner having a twist and sweep characteristic as claimed in claim 1 wherein: the projection geometry of the high-pressure edge (4) of the rotating wheel blade projected on the axial plane is represented by the diameter D of the crown part of the high-pressure edge of the rotating wheel blade A Diameter D at midpoint of high-pressure side of runner blade B And diameter D of lower ring of high-pressure side of runner blade C Three parameters are controlled.
3. A pump turbine runner having a twist and sweep characteristic as claimed in claim 2 wherein: diameter D of high-pressure upper crown of runner blade A Diameter D at midpoint of high-pressure side of runner blade B And diameter D of lower ring of high-pressure side of runner blade C The range of the value of (2) is 0.80-0.9D 0 ，D 0 The circle diameter is distributed for the movable guide vane.
4. A pump turbine runner having a twist and sweep characteristic as claimed in claim 1 wherein: the blade placing angle of the rotating wheel blade (3) passes through the blade placing angle beta at the upper crown of the high-pressure side of the rotating wheel blade A And under the high pressure side of the runner bladeBlade mounting angle beta at ring C And controlling.
5. The pump turbine runner with twist and sweep characteristics of claim 4 wherein: blade placement angle beta at high-pressure edge crown of rotating wheel blade A And a blade placing angle beta at the lower ring of the high-pressure edge of the rotating wheel blade C Satisfy |beta A -β C |≤10°。
6. A pump turbine runner having a twist and sweep characteristic as claimed in claim 1 wherein: the high-pressure edge (4) of the runner blade is chamfered into an elliptic fillet.
7. The pump turbine runner with twist and sweep characteristics of claim 6, wherein: the ellipticity of the elliptical angle ranges from 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210206688.3A CN114576065B (en) | 2022-03-03 | 2022-03-03 | Water pump turbine runner with turn-around characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210206688.3A CN114576065B (en) | 2022-03-03 | 2022-03-03 | Water pump turbine runner with turn-around characteristic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114576065A CN114576065A (en) | 2022-06-03 |
| CN114576065B true CN114576065B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210206688.3A Active CN114576065B (en) | 2022-03-03 | 2022-03-03 | Water pump turbine runner with turn-around characteristic |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2766054Y (en) * | 2004-06-04 | 2006-03-22 | 哈尔滨电机厂有限责任公司 | Wheel with L-type blades of mixed flow turbine |
| CN102562651A (en) * | 2012-03-08 | 2012-07-11 | 江苏大学 | High-efficiency wind-powered centrifugal pump impeller |
| CN103485958A (en) * | 2013-10-12 | 2014-01-01 | 南京泉腾冷却设备有限公司 | Low-water-head turbine runner and application |
| CN103649524A (en) * | 2011-04-20 | 2014-03-19 | 阿尔斯通再生能源技术公司 | Runner for a hydraulic machine, hydraulic machine provided with such a runner, and power-conversion equipment including such a hydraulic machine |
| CN208619176U (en) * | 2018-08-02 | 2019-03-19 | 中国科学院工程热物理研究所 | A kind of molding radial-flow type hollow impeller structure of 3D printing |
| CN110410259A (en) * | 2019-08-07 | 2019-11-05 | 东方电气集团东方电机有限公司 | A kind of leaf head cantilever type runner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560936B (en) * | 2009-05-27 | 2010-12-08 | 南京星飞冷却设备有限公司 | Runner used for direct connection low-speed small-scale mixed-flow turbine of hydrodynamic energy-saving cooling tower |
| CN110454310B (en) * | 2019-08-07 | 2021-04-27 | 东方电气集团东方电机有限公司 | Bionics hydraulic turbine |
-
2022
- 2022-03-03 CN CN202210206688.3A patent/CN114576065B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2766054Y (en) * | 2004-06-04 | 2006-03-22 | 哈尔滨电机厂有限责任公司 | Wheel with L-type blades of mixed flow turbine |
| CN103649524A (en) * | 2011-04-20 | 2014-03-19 | 阿尔斯通再生能源技术公司 | Runner for a hydraulic machine, hydraulic machine provided with such a runner, and power-conversion equipment including such a hydraulic machine |
| CN102562651A (en) * | 2012-03-08 | 2012-07-11 | 江苏大学 | High-efficiency wind-powered centrifugal pump impeller |
| CN103485958A (en) * | 2013-10-12 | 2014-01-01 | 南京泉腾冷却设备有限公司 | Low-water-head turbine runner and application |
| CN208619176U (en) * | 2018-08-02 | 2019-03-19 | 中国科学院工程热物理研究所 | A kind of molding radial-flow type hollow impeller structure of 3D printing |
| CN110410259A (en) * | 2019-08-07 | 2019-11-05 | 东方电气集团东方电机有限公司 | A kind of leaf head cantilever type runner |
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| Publication number | Publication date |
|---|---|
| CN114576065A (en) | 2022-06-03 |
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