US3024366A - Electric generator system - Google Patents

Electric generator system Download PDF

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Publication number
US3024366A
US3024366A US741249A US74124958A US3024366A US 3024366 A US3024366 A US 3024366A US 741249 A US741249 A US 741249A US 74124958 A US74124958 A US 74124958A US 3024366 A US3024366 A US 3024366A
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electric generator
casing
working substance
generator system
generator
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US741249A
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Yanagimachi Masanosuke
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    • 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
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/18—Lubricating arrangements
    • F01D25/22—Lubricating arrangements using working-fluid or other gaseous fluid as lubricant

Definitions

  • One object of this invention is to provide an electric generator and prime mover system which may be appreciably reduced in size.
  • Another object of this invention is to provide an electric generator which may be cooled easily and efficiently.
  • an electric generator is enclosed inside a casing together with a prime mover.
  • the prime mover is an expanding fluid powered mechanism, such as a turbine in Which a working substance may be expanded so as to drive the electric generator.
  • the working substance is a dielectric, such as a member of a group of fluorinated hydrocarbons, Vfor example, tri- Chloromonouoromethane commonly known by the trade name Freon-ll, the dielectric constant of vapor of which is 1.0019 (26 C., 0.5 atm.).
  • FIGURE is an axial sectional view of a unit comprising a prime mover and an electric generator embodying this invention, together with a diagrammatic layout of pipe lines ybelonging to the unit.
  • a casing 1 encloses a vapor turbine E, as a prime mover, and an electric generator D.
  • the rotor 2 of the turbine E and the rotor 3 of the electric generator D are secured on a common shaft 4 which is journaled rotatably inside the casing 1.
  • An inlet for a working substance F for example, Freon-ll, is provided through the wall of the casing 1 at the end thereof which faces the high pressure side of the turbine E, the low pressure side of the turbine E facing the electric generator D.
  • an outlet is provided through the wall of the casing 1 so as to exhaust the working substance F out ofthe casing 1.
  • the exhausted working substance F is then admitted into a condenser C in which the same is cooled and condensed by cooling pipes 5.
  • the liquefied working substance F is then delivered into a boiler B through a pump P.
  • the boiler B vaporizes the Working substance F so as to feed the vapor into the inlet of turbine E.
  • the working substance such as Freon-ll may be substituted for the hydrogen gas to cool the electric generator D in the following easy and simplified manner.
  • the pipe line to circulate the working substance F may have a branch extending from a point between the pump P and the boiler B and directed to an opening provided through the end wall of the casing 1 remote from the turbine E.
  • a part of the working substance F pumped may be fed Iinto the electric generator D, being regulated by an expansion valve V provided in the branch line.
  • the vapor of the working substance thus admitted inside the casing 1 at the end remote from the turbine E flows over the rotor 3 and the stator 6 of the electric generator D so as to cool the generator D.
  • a fan 7 provided on the shaft 4 serves to exhaust the cooling vapor through the outlet, described hereinbefore, to the condenser C.
  • This invention may be adapted to a low-pressure cycle of a binary vapor cycle system for driving the electric generator.
  • the boiler B may be operated as a heat exchanger in which another working substance such as steam for the high-pressure cycle is condensed and the working substance such as Freon-ll for the lowpressure cycle is vaporised by the heat transferred from the condensing steam.
  • An electric generator system comprising an electric generator; an expansible fluid powered engine drivingly connected to said generator; a single substantially sealed casing enclosing said generator and said engine and providing internal bearing support therefor; a fluid vaporzing means; an inlet in said casing adjacent said engine and connected to said vaporizing means to supply vaporized fluid to said engine to drive the latter by expansion of said fluid; an outlet in said casing in communication with said generator and said engine; condensing means connected to said outlet; and means connecting said condensing means to said vaporizing means, the expansible fluid being a dielectric uorinated hydrocarbon.
  • said dielectric fluorinated hydrocarbon being trichloromonouoromethane.
  • An electric generator system as claimed in claim 3 in which said engine and said generator have a common drive shaft; and a fan mounted on said drive shaft between said engine and said generator, and effecting ow of expanded iiuid from said generator to said outlet.

Description

March 6, 1962 MAsANosUKE YANAGIMACHI 3,024,366
ELECTRIC GENERATOR SYSTEM Filed June l1, 1958 INVENTOR.
MASANOSUKE YANAGiN/XCHL United States Patent Gfiiee 3,024,366 Patented Mar. 6, 1962 3,024,366 ELECTRIC GENERATOR SYSTEM Masanosuke Yanagimachi, 536 7-chome, Ebara, Shinagawa-ku, Tokyo, Japan Filed June 11, 1958, Ser. No. 741,249 6 Claims. (Cl. 290-2) This invention relates to an electric generator system.
In the prior art, electric generators have not been enclosed within a casing also enclosing a prime mover, due to the high electrical conductivity of the working substance, such as steam, for the prime mover. As a result, it has not been possible Ito effect a substantial reduction in the size of the overall electric generator system, and it has further been necessary to provide means for sealing the shaft of the prime mover which extends from the inside of the prime mover casing to the electric generator.
One object of this invention is to provide an electric generator and prime mover system which may be appreciably reduced in size.
Another object of this invention is to provide an electric generator which may be cooled easily and efficiently.
According Ito this invention, an electric generator is enclosed inside a casing together with a prime mover. The prime mover is an expanding fluid powered mechanism, such as a turbine in Which a working substance may be expanded so as to drive the electric generator. The working substance is a dielectric, such as a member of a group of fluorinated hydrocarbons, Vfor example, tri- Chloromonouoromethane commonly known by the trade name Freon-ll, the dielectric constant of vapor of which is 1.0019 (26 C., 0.5 atm.).
The invention will be better understood and other objects and additional advantages of this invention will become apparent upon perusal of the following description taken in connection with the drawing, and the scope of the invention will be defined in the appended claims.
In describing the invention, reference will be made to the single FIGURE of the accompanying drawing in which the single FIGURE is an axial sectional view of a unit comprising a prime mover and an electric generator embodying this invention, together with a diagrammatic layout of pipe lines ybelonging to the unit.
Referring to the drawing, a casing 1 encloses a vapor turbine E, as a prime mover, and an electric generator D. The rotor 2 of the turbine E and the rotor 3 of the electric generator D are secured on a common shaft 4 which is journaled rotatably inside the casing 1. An inlet for a working substance F, for example, Freon-ll, is provided through the wall of the casing 1 at the end thereof which faces the high pressure side of the turbine E, the low pressure side of the turbine E facing the electric generator D. Between the turbine E and the electric generator D, an outlet is provided through the wall of the casing 1 so as to exhaust the working substance F out ofthe casing 1. The exhausted working substance F is then admitted into a condenser C in which the same is cooled and condensed by cooling pipes 5. The liquefied working substance F is then delivered into a boiler B through a pump P. The boiler B vaporizes the Working substance F so as to feed the vapor into the inlet of turbine E.
In the past, hydrogen gas has been used to cool electric generators. According to this invention, the working substance such as Freon-ll may be substituted for the hydrogen gas to cool the electric generator D in the following easy and simplified manner. The pipe line to circulate the working substance F may have a branch extending from a point between the pump P and the boiler B and directed to an opening provided through the end wall of the casing 1 remote from the turbine E. A part of the working substance F pumped may be fed Iinto the electric generator D, being regulated by an expansion valve V provided in the branch line. The vapor of the working substance thus admitted inside the casing 1 at the end remote from the turbine E flows over the rotor 3 and the stator 6 of the electric generator D so as to cool the generator D. A fan 7 provided on the shaft 4 serves to exhaust the cooling vapor through the outlet, described hereinbefore, to the condenser C.
This invention may be adapted to a low-pressure cycle of a binary vapor cycle system for driving the electric generator. In such a case, the boiler B may be operated as a heat exchanger in which another working substance such as steam for the high-pressure cycle is condensed and the working substance such as Freon-ll for the lowpressure cycle is vaporised by the heat transferred from the condensing steam.
By virtue of the arrangement in accordance with this invention, it becomes possible to minimize the size of an electric generator system and eliminate the troublesome shaft seal problem. By virtue of the property of the specied working substance, the whole system may be kept thoroughly insulated electrically.
While particular embodiments of the invention have been illustra-ted and described, modifications thereof will readily occur to those skilled in the art. It should be understood therefore that the invention is not limited to the particular arrangements disclosed but that the appended claims are intended to cover all modifications which do not depart from the true spirit and scope of the invention.
What is claimed as newand desired to be secured by Letters Patent of the United States is:
l. An electric generator system comprising an electric generator; an expansible fluid powered engine drivingly connected to said generator; a single substantially sealed casing enclosing said generator and said engine and providing internal bearing support therefor; a fluid vaporzing means; an inlet in said casing adjacent said engine and connected to said vaporizing means to supply vaporized fluid to said engine to drive the latter by expansion of said fluid; an outlet in said casing in communication with said generator and said engine; condensing means connected to said outlet; and means connecting said condensing means to said vaporizing means, the expansible fluid being a dielectric uorinated hydrocarbon.
2. Electric generator system, according to claim 1, said working substance being trichloromonofluoromethane.
3. An electric generator system as claimed in claim l in which said casing has a second inlet adjacent said generator; a conduit having one end connected to the means connecting said condensing means to said vaporizing means and its other end connected to said second outlet; and an expansion valve in said conduit for expanding iinid from said condensing means into said casing to ilow through said generator to cool the same and to flow out of said outlet.
4. Electric generator system according to claim 3, said dielectric fluorinated hydrocarbon being trichloromonouoromethane.
5. An electric generator system as claimed in claim 3 in which said engine and said generator have a common drive shaft; and a fan mounted on said drive shaft between said engine and said generator, and effecting ow of expanded iiuid from said generator to said outlet.
3 4 6. Electric genera-tor according to clairn 5 said work- 1,741,605 Baumann Dec. 31, 1929 ing substance being trichloromonofiuoromethane. 2,411,347 Trumpler Nov. 19, 1946 2,452,581 Lehmann Nov. 2, 1948 References Cited in the le of this patent 2,495,745 Litton Jan, 31, 1950 UNITED STATES PATENTS 5 2,768,511 Moody OCt- 30, 1956 748,215 Porter et a1 Dec. 29, 1903
US741249A 1958-06-11 1958-06-11 Electric generator system Expired - Lifetime US3024366A (en)

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122894A (en) * 1962-07-05 1964-03-03 American Radiator & Standard Hermetic motor cooling by direct expansion of system refrigerant into motor
US3177369A (en) * 1961-05-02 1965-04-06 Martin Marietta Corp Cryogenic expander
US3216199A (en) * 1962-05-15 1965-11-09 United Aircraft Corp Power conversion system
US3684413A (en) * 1969-09-24 1972-08-15 Beloit College Engine
US3783614A (en) * 1972-02-10 1974-01-08 H Walker Turbine engine
US3816751A (en) * 1971-11-08 1974-06-11 Bbc Brown Boveri & Cie Apparatus for cooling an electrical generator
US3935488A (en) * 1973-10-30 1976-01-27 Siemens Aktiengesellschaft Method of operating a fluid-cooled hydropower generator
US4079263A (en) * 1974-03-18 1978-03-14 Inoue-Japan Research Incorporated Power producing system
FR2438158A1 (en) * 1978-10-05 1980-04-30 Acec RELAXATION TURBINE ASSEMBLY - CURRENT GENERATOR
EP0026584A1 (en) * 1979-09-05 1981-04-08 Robert Williams Needham Improvements in and relating to turbo electric generators
US4293777A (en) * 1979-07-30 1981-10-06 Joseph Gamell Industries, Inc. Turbo-electric power plant and process
US4301375A (en) * 1980-01-02 1981-11-17 Sea Solar Power, Inc. Turbo-generator unit and system
US4362020A (en) * 1981-02-11 1982-12-07 Mechanical Technology Incorporated Hermetic turbine generator
US4503682A (en) * 1982-07-21 1985-03-12 Synthetic Sink Low temperature engine system
US4513213A (en) * 1981-11-16 1985-04-23 Mitsubishi Denki Kabushiki Kaisha Pressure density equalizing apparatus for two vessels
US4577116A (en) * 1983-11-14 1986-03-18 The Boeing Company System for providing electrical energy to a missile and the like
US4638173A (en) * 1985-05-14 1987-01-20 The United States Of America As Represented By The Secretary Of The Navy Electromechanical power source
US5118961A (en) * 1990-09-14 1992-06-02 S & W Holding, Inc. Turbine generator
EP1821392A2 (en) * 2006-02-21 2007-08-22 Honeywell International, Inc. High power generator with enhanced heat removal
JP2011106316A (en) * 2009-11-16 2011-06-02 Ihi Corp Heat recovery system for rotary machine
JP2012207559A (en) * 2011-03-29 2012-10-25 Kobe Steel Ltd Binary generator
US20130160450A1 (en) * 2011-12-22 2013-06-27 Frederick J. Cogswell Hemetic motor cooling for high temperature organic rankine cycle system
CN103248171A (en) * 2012-02-14 2013-08-14 株式会社神户制钢所 Power generation apparatus
JP2013160059A (en) * 2012-02-01 2013-08-19 Ihi Corp Heat recovery power generation device
WO2014104294A1 (en) * 2012-12-28 2014-07-03 三菱重工業株式会社 Power generation system, power generation method
CN104074566A (en) * 2013-03-25 2014-10-01 株式会社神户制钢所 Power generation apparatus and power generation system
US20150322811A1 (en) * 2012-09-11 2015-11-12 Concepts Eti, Inc. ORC Turbine and Generator, And Method Of Making A Turbine
CN105756731A (en) * 2016-03-01 2016-07-13 合肥通用机械研究院 Organic Rankine cycle system capable of effectively improving efficiency of expansion machine
US20160319691A1 (en) * 2013-12-16 2016-11-03 Orcan Energy Ag Device and method for operating volumetric expansion machines
GB2619711A (en) * 2022-06-13 2023-12-20 Aker Solutions As Turbine-generator, power plant and method
GB2619778A (en) * 2022-06-13 2023-12-20 Aker Solutions As Power plant and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US748215A (en) * 1903-09-14 1903-12-29 Edwin Hitchins Porter Turbine electric generator.
US1741605A (en) * 1925-05-04 1929-12-31 Bbc Brown Boveri & Cie Power-plant installation
US2411347A (en) * 1940-11-27 1946-11-19 Carrier Corp Refrigerant vapor system
US2452581A (en) * 1944-06-07 1948-11-02 Standard Telephones Cables Ltd Turbogenerator
US2495745A (en) * 1946-02-20 1950-01-31 Standard Telephones Cables Ltd Small turbine generator
US2768511A (en) * 1955-03-21 1956-10-30 Trane Co Motor compressor cooling in refrigerating apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US748215A (en) * 1903-09-14 1903-12-29 Edwin Hitchins Porter Turbine electric generator.
US1741605A (en) * 1925-05-04 1929-12-31 Bbc Brown Boveri & Cie Power-plant installation
US2411347A (en) * 1940-11-27 1946-11-19 Carrier Corp Refrigerant vapor system
US2452581A (en) * 1944-06-07 1948-11-02 Standard Telephones Cables Ltd Turbogenerator
US2495745A (en) * 1946-02-20 1950-01-31 Standard Telephones Cables Ltd Small turbine generator
US2768511A (en) * 1955-03-21 1956-10-30 Trane Co Motor compressor cooling in refrigerating apparatus

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177369A (en) * 1961-05-02 1965-04-06 Martin Marietta Corp Cryogenic expander
US3216199A (en) * 1962-05-15 1965-11-09 United Aircraft Corp Power conversion system
US3122894A (en) * 1962-07-05 1964-03-03 American Radiator & Standard Hermetic motor cooling by direct expansion of system refrigerant into motor
US3684413A (en) * 1969-09-24 1972-08-15 Beloit College Engine
US3816751A (en) * 1971-11-08 1974-06-11 Bbc Brown Boveri & Cie Apparatus for cooling an electrical generator
US3783614A (en) * 1972-02-10 1974-01-08 H Walker Turbine engine
US3935488A (en) * 1973-10-30 1976-01-27 Siemens Aktiengesellschaft Method of operating a fluid-cooled hydropower generator
US4079263A (en) * 1974-03-18 1978-03-14 Inoue-Japan Research Incorporated Power producing system
FR2438158A1 (en) * 1978-10-05 1980-04-30 Acec RELAXATION TURBINE ASSEMBLY - CURRENT GENERATOR
US4293777A (en) * 1979-07-30 1981-10-06 Joseph Gamell Industries, Inc. Turbo-electric power plant and process
EP0026584A1 (en) * 1979-09-05 1981-04-08 Robert Williams Needham Improvements in and relating to turbo electric generators
US4301375A (en) * 1980-01-02 1981-11-17 Sea Solar Power, Inc. Turbo-generator unit and system
US4362020A (en) * 1981-02-11 1982-12-07 Mechanical Technology Incorporated Hermetic turbine generator
US4513213A (en) * 1981-11-16 1985-04-23 Mitsubishi Denki Kabushiki Kaisha Pressure density equalizing apparatus for two vessels
US4503682A (en) * 1982-07-21 1985-03-12 Synthetic Sink Low temperature engine system
US4577116A (en) * 1983-11-14 1986-03-18 The Boeing Company System for providing electrical energy to a missile and the like
US4638173A (en) * 1985-05-14 1987-01-20 The United States Of America As Represented By The Secretary Of The Navy Electromechanical power source
US5118961A (en) * 1990-09-14 1992-06-02 S & W Holding, Inc. Turbine generator
EP1821392A2 (en) * 2006-02-21 2007-08-22 Honeywell International, Inc. High power generator with enhanced heat removal
EP1821392A3 (en) * 2006-02-21 2009-03-18 Honeywell International Inc. High power generator with enhanced heat removal
JP2011106316A (en) * 2009-11-16 2011-06-02 Ihi Corp Heat recovery system for rotary machine
JP2012207559A (en) * 2011-03-29 2012-10-25 Kobe Steel Ltd Binary generator
US20130160450A1 (en) * 2011-12-22 2013-06-27 Frederick J. Cogswell Hemetic motor cooling for high temperature organic rankine cycle system
US9689281B2 (en) * 2011-12-22 2017-06-27 Nanjing Tica Air-Conditioning Co., Ltd. Hermetic motor cooling for high temperature organic Rankine cycle system
JP2013160059A (en) * 2012-02-01 2013-08-19 Ihi Corp Heat recovery power generation device
US20130207396A1 (en) * 2012-02-14 2013-08-15 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Power generation apparatus
JP2013169029A (en) * 2012-02-14 2013-08-29 Kobe Steel Ltd Power generator
CN103248171A (en) * 2012-02-14 2013-08-14 株式会社神户制钢所 Power generation apparatus
US9083215B2 (en) * 2012-02-14 2015-07-14 Kobe Steel, Ltd. Power generation apparatus
CN103248171B (en) * 2012-02-14 2015-09-23 株式会社神户制钢所 Blast Furnace Top Gas Recovery Turbine Unit (TRT)
EP2628908A3 (en) * 2012-02-14 2017-07-05 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Power generation apparatus
US20150322811A1 (en) * 2012-09-11 2015-11-12 Concepts Eti, Inc. ORC Turbine and Generator, And Method Of Making A Turbine
US10069378B2 (en) 2012-09-11 2018-09-04 Concepts Nrec, Llc ORC turbine and generator, and method of making a turbine
US9543808B2 (en) 2012-12-28 2017-01-10 Mitsubishi Heavy Industries, Ltd. Power generation system, power generation method
WO2014104294A1 (en) * 2012-12-28 2014-07-03 三菱重工業株式会社 Power generation system, power generation method
CN104074566A (en) * 2013-03-25 2014-10-01 株式会社神户制钢所 Power generation apparatus and power generation system
CN104074566B (en) * 2013-03-25 2017-01-04 株式会社神户制钢所 TRT and electricity generation system
US20160319691A1 (en) * 2013-12-16 2016-11-03 Orcan Energy Ag Device and method for operating volumetric expansion machines
US10968766B2 (en) * 2013-12-16 2021-04-06 Orcan Energy Ag Device and method for operating volumetric expansion machines
US11585231B2 (en) 2013-12-16 2023-02-21 Bitzer Kühlmaschinenbau Gmbh Device and method for operating volumetric expansion machines
CN105756731A (en) * 2016-03-01 2016-07-13 合肥通用机械研究院 Organic Rankine cycle system capable of effectively improving efficiency of expansion machine
GB2619711A (en) * 2022-06-13 2023-12-20 Aker Solutions As Turbine-generator, power plant and method
GB2619778A (en) * 2022-06-13 2023-12-20 Aker Solutions As Power plant and method
WO2023244119A1 (en) * 2022-06-13 2023-12-21 Aker Solutions As Turbine-generator, power plant and method

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