US20130266445A1 - Francis-Type Pump for a Hydroelectric Power Plant - Google Patents

Francis-Type Pump for a Hydroelectric Power Plant Download PDF

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Publication number
US20130266445A1
US20130266445A1 US13/879,692 US201113879692A US2013266445A1 US 20130266445 A1 US20130266445 A1 US 20130266445A1 US 201113879692 A US201113879692 A US 201113879692A US 2013266445 A1 US2013266445 A1 US 2013266445A1
Authority
US
United States
Prior art keywords
francis
counter
type pump
pump according
swirl generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/879,692
Other languages
English (en)
Inventor
Bernd Mayr
Martin Giese
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Assigned to VOITH PATENT GMBH reassignment VOITH PATENT GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GIESE, MARTIN, MAYR, BERND
Publication of US20130266445A1 publication Critical patent/US20130266445A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
    • 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
    • F03B3/02—Machines or engines of reaction type; Parts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines
    • 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
    • F03B15/00—Controlling
    • F03B15/005—Starting, also of pump-turbines
    • 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
    • F03B3/10—Machines or engines of reaction type; Parts or details peculiar thereto characterised by having means for functioning alternatively as pumps or turbines
    • F03B3/103—Machines or engines of reaction type; Parts or details peculiar thereto characterised by having means for functioning alternatively as pumps or turbines the same wheel acting as turbine wheel and as pump wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • F05B2240/13—Stators to collect or cause flow towards or away from turbines
    • F05B2240/132—Stators to collect or cause flow towards or away from turbines creating a vortex or tornado effect
    • 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

Definitions

  • the invention relates to a Francis-type pump for a hydroelectric power plant for pumping water from a downstream reservoir to an upstream reservoir.
  • Such a pump comprises a blade wheel, a spiral housing and a suction pipe.
  • It can be a component of a pump-storage power station. It can be operated as a turbine when the water flows from the upstream reservoir to the downstream reservoir (see WO 2010/094887 A1).
  • Such a pump is designed to meet certain parameters that are based on the power station, especially a specific pumping head and a specific throughput.
  • the inventors have recognized the following:
  • the problems occur when the pumping head exceeds a magnitude on which the construction is based. This may occur for example when the upstream water level is especially high or the downstream water level is especially low, or if both occur simultaneously. They have therefore recognized the pumping head as an especially critical quantity.
  • the invention is based on the object of providing a pump of the kind mentioned above in such a way that the flow is also stable in the case of high pumping heads and the start-up of the pump will be enabled.
  • the guide elements can be moved back again once a stable flow has been produced by the counter-swirl during start-up.
  • FIG. 1 shows a Francis-type pump as a component of a hydroelectric power plant in a vertical sectional view
  • FIG. 2 shows a schematic axially sectional view of the part of the suction pipe adjacent to the blade wheel
  • FIG. 3 shows the subject matter of FIG. 2 in a view along III-III;
  • FIG. 4 schematically shows an axially vertical sectional view through the suction pipe with a plurality of hydraulic swirl generators.
  • FIG. 5 shows a suction pipe according to the state of the art with streamlines.
  • the Francis-type pump as shown in FIG. 1 comprises a blade wheel 1 which is enclosed by a spiral housing 2 .
  • a suction pipe 3 is arranged upstream of the blade wheel 1 .
  • the volume flow produced by the blade wheel 1 will be supplied from the spiral housing to an ascending pipe 4 .
  • the end of the suction pipe on the inlet side immerses into a downstream reservoir (not shown).
  • the end of the ascending pipe on the outlet side opens into an upstream reservoir (not shown).
  • the pump is driven by an electric motor 5 .
  • the blade wheel 1 and the electric motor 5 are arranged coaxially and are in drive connection with each other via a shaft 6 .
  • the suction pipe 3 comprises an inlet section 3 . 1 , an elbow 3 . 2 and an outlet section 3 . 3 provided upstream of the blade wheel 1 .
  • the relevant component is a device for producing a swirl in opposite direction to the blade wheel 1 .
  • This device comprises a plurality of counter-swirl generators 7 . They are arranged on the outlet section 3 . 3 of the suction pipe (see FIGS. 2 and 3 ).
  • the counter-swirl generator 7 as shown in FIG. 2 is arranged as follows:
  • the wall of the outlet section 3 . 3 comprises a pocket 3 . 4 in its region close to the blade wheel.
  • a guide element 7 . 1 is displaceable by means of an adjusting device 3 . 5 with more or less distance from the rotational axis 1 . 1 of the blade wheel 1 .
  • the guide element can be arranged in the shape of a blade.
  • FIG. 3 shows that the guide element 7 . 1 is inclined against the plane of the rotational axis 1 . 1 . This is the precondition that a swirl will be produced in the flow in the outlet section 3 . 3 .
  • the counter-swirl generator can also have a shape that differs from the one that is shown. Consequently, the guide element can also be arranged as a rotatable element, comprising a rotational axis and a plurality of blades disposed on the rotational axis.
  • a non-mechanical solution can also be considered.
  • Nozzles can be provided for example with which the suction pipe is equipped, e.g. in its outlet section 3 . 3 .
  • the nozzles can be connected to a flowable medium (generally water) and are directed in such a way that the desired counter-swirl is produced in the flow in the suction tube 3 .
  • FIG. 4 schematically illustrates a hydraulic solution.
  • Several swirl-generating nozzles 8 are arranged in the wall of suction pipe 3 . Water jets are introduced here. The direction of the jets is illustrated by the arrows.
  • FIG. 5 schematically shows a suction pipe 3 of a hydraulic pump with a streamline diagram.
  • the suction pipe is not provided with the counter-swirl generators in accordance with the invention.
  • the illustration shows that separations X occur on the inner wall regions of the curvature of the suction pipe.
  • the invention can also be applied to pump turbines.
  • the counter-swirl generators will be activated in pumping operation in such a case, which again only occurs during start-up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Hydraulic Turbines (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Water Turbines (AREA)
US13/879,692 2010-11-02 2011-10-14 Francis-Type Pump for a Hydroelectric Power Plant Abandoned US20130266445A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010050001.1 2010-11-02
DE102010050001A DE102010050001A1 (de) 2010-11-02 2010-11-02 Pumpe in Francis-Bauweise für ein Wasserkraftwerk
PCT/EP2011/005156 WO2012059174A2 (de) 2010-11-02 2011-10-14 Pumpe in francis-bauweise für ein wasserkraftwerk

Publications (1)

Publication Number Publication Date
US20130266445A1 true US20130266445A1 (en) 2013-10-10

Family

ID=44872270

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/879,692 Abandoned US20130266445A1 (en) 2010-11-02 2011-10-14 Francis-Type Pump for a Hydroelectric Power Plant

Country Status (6)

Country Link
US (1) US20130266445A1 (zh)
EP (1) EP2635800A2 (zh)
JP (1) JP2013543074A (zh)
CN (1) CN103228908A (zh)
DE (1) DE102010050001A1 (zh)
WO (1) WO2012059174A2 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102720622B (zh) * 2012-06-21 2015-02-04 河海大学 一种水轮机尾水管涡流发生器
CA2908772A1 (en) * 2013-04-08 2014-10-16 Voith Patent Gmbh Device and method for reducing pressure fluctuations in the suction pipe of a water turbine or water pump or water pump turbine
AT521415B1 (de) 2018-07-03 2021-01-15 Andritz Hydro Gmbh Anlage zur energiegewinnung
DE102022101640B3 (de) 2022-01-25 2023-01-19 Voith Patent Gmbh Pumpe für ein Wasserkraftwerk

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616663A (en) * 1945-06-16 1952-11-04 Karlstad Mekaniska Ab Water turbine and propeller pump
US3185440A (en) * 1963-01-18 1965-05-25 Escher Wyss Ag Limiting the speed of the starting turbine of a pump-turbine or accumulator pump
US20110293400A1 (en) * 2009-02-18 2011-12-01 Alstom Hydro France Installation for converting hydraulic energy, and a method of controlling such an installation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306742A (en) * 1940-06-26 1942-12-29 Lewis F Moody Pump
GB1006299A (en) * 1962-10-15 1965-09-29 English Electric Co Ltd Improvements in or relating to hydraulic pumps and reversible pump turbines
GB1006365A (en) * 1962-10-15 1965-09-29 English Electric Co Ltd Improvements in or relating to hydraulic pumps and reversible pump turbines
DD100105A1 (zh) * 1972-10-31 1973-09-05
JPH0742932B2 (ja) * 1985-11-26 1995-05-15 株式会社東芝 揚水水力機械の運転制御装置
JPS6388278A (ja) * 1986-10-02 1988-04-19 Mitsubishi Heavy Ind Ltd 水柱分離抑制方法
DE3707723A1 (de) * 1987-03-11 1988-09-22 Messerschmitt Boelkow Blohm Vorrichtung zur drallerzeugung in der anstroemung von turbo-maschinen
NO20044391D0 (no) * 2004-10-18 2004-10-18 Troms Kraft Produksjon As Anordning og fremgangsmate ved sugeror
DE102009004599A1 (de) * 2009-01-12 2010-07-15 Sunder-Plaßmann, Christoph, Dipl.-Ing. Gehäuselose, radialwirkende Strömungs-Arbeitsmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616663A (en) * 1945-06-16 1952-11-04 Karlstad Mekaniska Ab Water turbine and propeller pump
US3185440A (en) * 1963-01-18 1965-05-25 Escher Wyss Ag Limiting the speed of the starting turbine of a pump-turbine or accumulator pump
US20110293400A1 (en) * 2009-02-18 2011-12-01 Alstom Hydro France Installation for converting hydraulic energy, and a method of controlling such an installation

Also Published As

Publication number Publication date
WO2012059174A3 (de) 2013-05-10
EP2635800A2 (de) 2013-09-11
WO2012059174A2 (de) 2012-05-10
JP2013543074A (ja) 2013-11-28
CN103228908A (zh) 2013-07-31
DE102010050001A1 (de) 2012-05-03

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AS Assignment

Owner name: VOITH PATENT GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MAYR, BERND;GIESE, MARTIN;REEL/FRAME:030543/0432

Effective date: 20130517

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION