US3185440A - Limiting the speed of the starting turbine of a pump-turbine or accumulator pump - Google Patents

Limiting the speed of the starting turbine of a pump-turbine or accumulator pump Download PDF

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Publication number
US3185440A
US3185440A US330415A US33041563A US3185440A US 3185440 A US3185440 A US 3185440A US 330415 A US330415 A US 330415A US 33041563 A US33041563 A US 33041563A US 3185440 A US3185440 A US 3185440A
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United States
Prior art keywords
turbine
pump
runner
starting
speed
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.)
Expired - Lifetime
Application number
US330415A
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English (en)
Inventor
Hullmann Heinrich
Baumann Kurt
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Sulzer Escher Wyss AG
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Escher Wyss AG
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Filing date
Publication date
Application filed by Escher Wyss AG filed Critical Escher Wyss AG
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Publication of US3185440A publication Critical patent/US3185440A/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
    • F03B15/00—Controlling
    • F03B15/02—Controlling by varying liquid flow
    • F03B15/04—Controlling by varying liquid flow of turbines
    • F03B15/06—Regulating, i.e. acting automatically
    • F03B15/18—Regulating, i.e. acting automatically for safety purposes, e.g. preventing overspeed
    • 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
    • F03B3/12—Blades; Blade-carrying rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0044—Varying behaviour or the very pump by introducing a gas
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/91—Reversible between pump and motor use

Definitions

  • the invention now relates to a method for limiting the speed of a starting turbine of a hydraulic machine
  • the invention furthermore relates to a device for carrying out the said method.
  • the said device is so designed that it produces an additional circulation of liquidthrough the machine set.
  • FIGS. 1 and 2 of the accompanying drawings each represent in simplified form a construction example of a device for carrying out the method according to the invention. The method will be explained by way of example with reference to this device.
  • the runner 1 of a pump-turbine 2 is coupled by a shaft 3 to a synchronous electrical machine 4.
  • the pump-turbine 2 On the high-pressure side, the pump-turbine 2 has a spiral casing 5 and on the low-pressure side a suction tube 6. The casing of the pump-turbine 2 can be emptied through a pipe 7.
  • a starting turbine 9 connected to the runner 1 of the pump-turbine 2 by a shaft 10, serves for starting.
  • the starting turbine 9 receives water under pressure through a supply connection 11. Its exhaust water fiows through a draft tube 12 into the suction tube 6 of the pump-turbine 2.
  • a shut-oii valve 13 is provided in the supply connection 11 and on the outlet side a shut-off valve 14 is provided in the draft tube 12.
  • the pump-turbine is provided with pressure-water pipes 16 opening into its runner chamber 15, which pipes are connected by an annular pipe 17 and another pipe 18 to a point of the supply connection 11 situated after the shut-off valve 13.
  • shut-oh valves 13 and 14 are open, and water under pressure passes through the pipes 18, 17 and 16 to the empty runner chamber of the pumpturbine.
  • the outlets of the pipes 16 are provided with nozzles 19, which spray the water supplied.
  • the runner 1 then rotates in a water-air mixture. By additional liquid circulation, therefore, a braking torque is exerted on the machine set.
  • an additional possibility of exerting a braking torque on the machine set is provided by the fact that the runner gaps and labyrinth gaps of the pump-turbine 2 are connected by pipes 22 and 23 and 24 to the supply connection 11 of the starting turbine. Water under pressure in increased quantity can be supplied through these pipes 22, 23, 24 to the runner gaps and runner labyrinths of the machine which is to be started. This step also provides an additional circulation of liquid with the application of a braking torque on the machine set.
  • a throttling member 25 and non-return valve 26 are incorporated in the pipe 24. These members 25 and 26 serve the same purpose as the members 20 and 21.
  • FIG. 2 shows such an embodiment.
  • the starting turbine is constructed as Francis turbine. 27 is the runner of the starting turbine and 28 the runner of the circulating pump.
  • the runner 28 of the circulating pump is built directly on to the runner 27 of the starting turbine on the coupling side. Connected thereto is the driving shaft 19 for the pump-turbine or accumulator pump to be driven, which is not shown.
  • the working water flows to the runner 27 of the starting turbine through a spiral casing 29 and flows away through a draft tube 30.
  • the suction side of the circulating pump 28 is connected to the outlet chamber of the starting turbine, that is to say to the draft tube 30 by a passage 31 passing through the runner hub of the starting turbine.
  • the spiral casing 29 acts as pressure casing common to the starting turbine and circulating pump, that is to say, it forms the inlet chamber for the starting turbine and the outlet chamber for the circulating pump.
  • the runner 28 of the circulation pump is so designed that it begins to deliver on exceeding a predetermined speed below the runaway speed of the machine to be started, but advantageously only above the working speed of the machine to be started.
  • a non-return valve 32 is included in the passage 31 as closure member, which,
  • the non-return valve 32 opens automatically and the circulating pump begins to pump Water from the discharge chamber of the starting turbine to the inlet chamber thereof and thus to circulate it additionally while exercising a braking torque on the machine set.
  • a machine set comprising a hydraulic machine having a housing and a runner in said housing, and a starting turbine drivingly connected with said runner of the hydraulic machine, said starting turbine having a supply connection for driving water including a shut-off valve, and a speed limiting device comprising at least one pipe issuing from a point of said supply connection situated after said shut-oil valve and opening into said housing of the hydraulic machine so as to withdraw Water from said supply connection and to direct it toward the runner of said hydraulic machine.
  • a machine set comprising an hydr-aulic machine having a housing and a runner in said housing, and a starting turbine having a runner drivingly connected with the runner of said hydraulic machine and means defining a flow passage for driving water through said starting turbine, comprising a supply connection including a shut-off valve and a discharge connection for the Water leaving the runner of the starting turbine; and a speed limiting device comprising a flow connection, issuing from said flow passage at a point downstream from said shut-01f valve, for deriving part of the driving water of the starting turbine; and means, eifective when the speed of the machine reaches a speed which approaches the runaway speed of the hydraulic machine, causing the derived water to exert a hydro-dynamic drag on the machine set.
  • the means causing the derived water to exert a hydro-dynamic drag on the machine set comprises a centrifugal pump connected to be driven by said starting turbine and in which said flow connection opens into the inlet side of said centrifugal pump, said centrifugal pump being efifective to deliver water only when its speed exceeds a speed which approaches the runaway speed of said hydraulic machine.
  • shutoff valve is incorporated in the liquid flow path of the centrifugal pump; said shut-oil? valve being designed so as to open automatically when a predetermined speed below the runaway speed of the hydraulic machine is exceeded.
  • shut-off valve incorporated in the liquid flow path of the centrifugal pump is a non-return valve designed to open as soon as the liquid pressure produced by the speed limiting pump has reached a predetermined value.
  • suction side of the centrifugal pump is connected to the discharge side of the starting turbine and the pressure side of the centrifugal pump is connected to the inlet side of the starting turbine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Water Turbines (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Hydraulic Turbines (AREA)
US330415A 1963-01-18 1963-12-13 Limiting the speed of the starting turbine of a pump-turbine or accumulator pump Expired - Lifetime US3185440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH61663A CH400043A (de) 1963-01-18 1963-01-18 Verfahren und Einrichtung zur Begrenzung der Drehzahl der Anwurfturbine einer Pumpenturbine oder Speicherpumpe

Publications (1)

Publication Number Publication Date
US3185440A true US3185440A (en) 1965-05-25

Family

ID=4191136

Family Applications (1)

Application Number Title Priority Date Filing Date
US330415A Expired - Lifetime US3185440A (en) 1963-01-18 1963-12-13 Limiting the speed of the starting turbine of a pump-turbine or accumulator pump

Country Status (7)

Country Link
US (1) US3185440A (https=)
AT (1) AT244881B (https=)
CH (1) CH400043A (https=)
ES (1) ES294055A1 (https=)
GB (1) GB1074690A (https=)
LU (1) LU45028A1 (https=)
NO (1) NO116318B (https=)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447473A (en) * 1966-06-17 1969-06-03 English Electric Co Ltd Pumps and reversible pump turbines
US20040265117A1 (en) * 2003-06-25 2004-12-30 General Electric Canada Inc. Hydraulic turbine draft tube with enhanced dissolved oxygen
US20130266445A1 (en) * 2010-11-02 2013-10-10 Bernd Mayr Francis-Type Pump for a Hydroelectric Power Plant
CN103498749A (zh) * 2013-09-27 2014-01-08 河海大学 一种用于低水头抽水蓄能电站的小型混流式水泵水轮机
WO2023143795A1 (de) * 2022-01-25 2023-08-03 Voith Patent Gmbh Pumpe für ein wasserkraftwerk

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58148278A (ja) * 1982-02-26 1983-09-03 Toshiba Corp 可逆水力機械のガイドベーン漏水排出方法
FR2669968B1 (fr) * 1990-11-30 1995-01-20 Sithe Procede de regulation de la vitesse de rotation d'une turbine hydraulique, et dispositif pour la mise-en-óoeuvre de ce procede.
CN112576429B (zh) * 2021-01-13 2021-09-24 宁夏隆丰园林景观工程有限公司 一种具有超速保护功能的水下水利发电装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US810955A (en) * 1904-03-09 1906-01-30 Andreas Lund Means for regulating turbines.
US1307703A (en) * 1919-06-24 Paul sagbebg and eelif mikdeltholt
GB277433A (en) * 1926-06-18 1927-09-19 English Electric Co Ltd Improvements connected with hydraulic turbines
US2781831A (en) * 1952-09-11 1957-02-19 Thompson Prod Inc Pumping assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1307703A (en) * 1919-06-24 Paul sagbebg and eelif mikdeltholt
US810955A (en) * 1904-03-09 1906-01-30 Andreas Lund Means for regulating turbines.
GB277433A (en) * 1926-06-18 1927-09-19 English Electric Co Ltd Improvements connected with hydraulic turbines
US2781831A (en) * 1952-09-11 1957-02-19 Thompson Prod Inc Pumping assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447473A (en) * 1966-06-17 1969-06-03 English Electric Co Ltd Pumps and reversible pump turbines
US20040265117A1 (en) * 2003-06-25 2004-12-30 General Electric Canada Inc. Hydraulic turbine draft tube with enhanced dissolved oxygen
US6971843B2 (en) * 2003-06-25 2005-12-06 General Electric Canada Inc. Hydraulic turbine draft tube with enhanced dissolved oxygen
US20130266445A1 (en) * 2010-11-02 2013-10-10 Bernd Mayr Francis-Type Pump for a Hydroelectric Power Plant
CN103498749A (zh) * 2013-09-27 2014-01-08 河海大学 一种用于低水头抽水蓄能电站的小型混流式水泵水轮机
CN103498749B (zh) * 2013-09-27 2016-03-02 河海大学 一种用于低水头抽水蓄能电站的小型混流式水泵水轮机
WO2023143795A1 (de) * 2022-01-25 2023-08-03 Voith Patent Gmbh Pumpe für ein wasserkraftwerk

Also Published As

Publication number Publication date
ES294055A1 (es) 1964-01-16
AT244881B (de) 1966-01-25
NO116318B (https=) 1969-03-03
GB1074690A (en) 1967-07-05
CH400043A (de) 1965-09-30
LU45028A1 (https=) 1964-02-17

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