WO2015046704A1 - 반작용식 스팀 터빈용 노즐 회전체 - Google Patents
반작용식 스팀 터빈용 노즐 회전체 Download PDFInfo
- Publication number
- WO2015046704A1 WO2015046704A1 PCT/KR2014/004627 KR2014004627W WO2015046704A1 WO 2015046704 A1 WO2015046704 A1 WO 2015046704A1 KR 2014004627 W KR2014004627 W KR 2014004627W WO 2015046704 A1 WO2015046704 A1 WO 2015046704A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- exhaust flow
- section
- body portion
- guide
- Prior art date
Links
Images
Classifications
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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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/32—Non-positive-displacement machines or engines, e.g. steam turbines with pressure velocity transformation exclusively in rotor, e.g. the rotor rotating under the influence of jets issuing from the rotor, e.g. Heron turbines
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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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/31—Application in turbines in steam turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/10—Manufacture by removing material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/50—Building or constructing in particular ways
- F05D2230/53—Building or constructing in particular ways by integrally manufacturing a component, e.g. by milling from a billet or one piece construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
- F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/24—Rotors for turbines
- F05D2240/242—Rotors for turbines of reaction type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/15—Two-dimensional spiral
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/22—Three-dimensional parallelepipedal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/29—Three-dimensional machined; miscellaneous
- F05D2250/291—Three-dimensional machined; miscellaneous hollowed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/70—Shape
- F05D2250/71—Shape curved
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
Definitions
- the present invention relates to a nozzle rotating body in which a rotational motion is performed by ejecting a fluid in a reaction steam turbine.
- a steam turbine is a prime mover that converts a mechanical work using steam in a high temperature and high pressure state, and is widely used as a main engine for thermal power generation or a ship.
- Steam turbines include impulse turbines using only the impact force generated by the jet by ejecting high pressure steam from the nozzle and ejecting them to the blades, and reaction turbines using the reaction force generated by changing the cross-sectional area between the blades in addition to the jet.
- reaction steam turbines using reactions by steam injection from the rotor itself have been proposed, and the reaction steam turbine obtains rotational energy by reaction of the discharged steam energy, while the structure is simple. It is suitable for small and medium capacity prime movers because of its high thermal efficiency.
- Patent Publication No. 10-2012-47709 (published date: May 14, 2012), Patent Publication No. 10-2013-42250 (published date: April 26, 2013) and Patent No. 10-1229575 (registration date) (January 29, 2013) shows a reaction turbine system.
- Such a reaction turbine device includes a housing having a housing flow passage, a turbine shaft rotatably coupled to the housing to transmit rotational force, and rotatably disposed in the housing flow passage of the housing coupled to the turbine shaft to inject high pressure fluid in the circumferential direction. And a plurality of nozzle assemblies to generate rotational force.
- FIG. 1 is a view showing a planar structure of the nozzle plate for the reaction steam turbine according to the prior art, the nozzle plate is a disk-like cover of the same size is assembled on the top to constitute one nozzle assembly.
- the conventional nozzle plate 1 has a shaft hole 11 coupled to a rotating shaft (turbine shaft) at the center of a disc-shaped body portion 10, and is formed around the shaft hole 11.
- a plurality of injection communication port 12 is formed.
- the spray communication port 12 has a first spray communication hole 12a which communicates with a spray suction hole of a cover (not shown), and a second spray communication hole which connects the first spray communication hole 12a and the jet discharge port 13 to each other. It consists of 12b.
- the jet communication port 12 and the jet discharge port 13 are provided by a square (or rectangular) groove by a milling operation on a disc-shaped body part having a constant thickness.
- the nozzle 20 Adjacent to the jet discharge port 13, the nozzle 20 is assembled with the body portion 10 by bolts or rivets.
- Reference numeral 23 is a bolt fastening hole for bolt assembly.
- the nozzle 20 has a nozzle hole 21 formed therethrough, and a part of the nozzle hole 21 has a small diameter portion 22 having a small diameter.
- the nozzle 20 is assembled separately from the body portion 10 is formed with a nozzle hole by a drilling (drilling) operation.
- the injection communication hole 12 and the injection discharge port 13 of the body portion 10 is manufactured by milling operation and the nozzle hole of the nozzle is manufactured by drilling operation, the injection communication port has a rectangular cross section (or Rectangular nozzle, the nozzle hole of the nozzle has a circular cross section. Therefore, a step is inevitably generated between the circular nozzle hole 21 and the square jet discharge port 13, and this step may be a great obstacle to the flow of the fluid, and a decrease in efficiency may occur due to the pressure drop in the corresponding part. .
- the nozzle 20 should be fixed at the outermost side of the body portion 10 in order to obtain a large rotational force, and thus, a bolt fastening portion (bolt fastening hole) of the nozzle 20 assembled with the body portion 10. (A region) is supported only on the inside, and the outside of the nozzle 20 to which the centrifugal force acts is not supported on the body portion.
- the bolt is vulnerable to shear stress, so when the nozzle 20 is assembled only with the bolt, the nozzle 20 is exposed to a large pressure and impact along with the centrifugal force during the long-term operation of the turbine. The 20 may be dislodged from the body 10 and cause serious damage to the turbine.
- the present invention is to solve the problems of the prior art, in the nozzle plate for the reaction steam turbine (hereinafter referred to as "nozzle rotor"), to improve the nozzle structure to minimize the pressure drop of the fluid on the flow path, It is an object of the present invention to provide a nozzle rotor for a reaction steam turbine that can increase the durability of the nozzle.
- the nozzle rotor for the reaction steam turbine according to the present invention for achieving the above object is a disk-shaped body portion is formed with a shaft hole coupled to the rotating shaft in the center; A guide part integrally protruding in the vertical direction integrally with the body part to have a guide side surface which provides a plurality of exhaust flow paths that are equal to each other in a spiral direction with respect to the shaft hole; A nozzle piece having a cross section of the same shape as the cross section of the exhaust flow path and positioned at each end of the exhaust flow path to be assembled with the body portion so as to have a section in which the width is narrowed; And a fastening member including at least one bolt and an assembly pin for coupling the nozzle piece to the body portion.
- the nozzle piece is characterized in that the exhaust passage of the narrow section with the guide side surface of the guide portion which is fixed to the outer side at the tip of the exhaust passage facing the nozzle piece.
- the guide portion further includes a release prevention jaw to support the outer surface of the nozzle piece in the radial direction of the body portion.
- the cross section of the exhaust flow path is characterized in that the square, more preferably, the edge of the exhaust flow path is characterized in that the curved surface.
- the guide portion is characterized in that the hollow hole is formed in the guide side surface.
- Nozzle rotor for reaction steam turbine according to the present invention, the nozzle portion constituting the nozzle portion in the body portion can be replaced so that the capacity of the turbine can be easily changed while improving the nozzle structure to minimize the pressure drop due to fluid resistance It can be, and there is an effect that can increase the durability of the nozzle portion.
- FIG. 1 is a view showing a planar structure of a nozzle plate for a reaction steam turbine according to the prior art
- FIG. 2 is a plan view of a nozzle rotating body for a reaction steam turbine according to the present invention
- FIG. 3 is a perspective view of a nozzle rotor for a reaction steam turbine according to the present invention.
- Figure 4 (a) (b) (c) (d) is a view showing the cross-sectional configuration A-A and B-B of Figure 2,
- FIG. 5 is a plan view of a nozzle rotating body for a reaction steam turbine according to another embodiment of the present invention.
- FIG. 6 is a cross-sectional view taken along the line C-C of FIG.
- first and / or second in the present invention may be used to describe various components, but the components are not limited to the terms.
- the above terms are for the purpose of distinguishing one component from other components only, for example, within the scope not departing from the scope of the right according to the concept of the present invention, the first component may be called a second component, Similarly, the second component may also be referred to as the first component.
- FIG. 2 is a plan view of a nozzle rotor for a reaction steam turbine according to the present invention
- Figure 3 is a perspective view of a nozzle rotor for a reaction steam turbine according to the present invention.
- the nozzle rotating body 100 of the present invention has a disk-shaped body portion 110, and the flow path guide side 121a protruding in a vertical direction integrally with the body portion 110.
- the body portion 110 is formed in the center of the shaft hole 111 in the form of a disk of a predetermined thickness, the guide portion 120 to provide a plurality of exhaust passage 121 around the shaft hole 111 is the body portion ( It is configured to protrude integrally with the 110, and preferably the exhaust passage 121 is provided by the guide side surface GS of the groove formed by the milling operation on the disk substrate to constitute the guide portion 120.
- the inner circumferential surface of the shaft hole 111 may be formed with a key groove 111a that is engaged with the rotation shaft (turbine shaft).
- Exhaust flow passage 121 is formed with a plurality of each is formed in a spiral with each other around the shaft hole 111, the nozzle piece 130 is assembled by a fastening member on one end of each exhaust flow passage 121.
- the nozzle piece 130 is narrow in width with the guide side surface GS of the guide part 120 which is fixed to the outer side at the tip of each exhaust passage 121 to face the nozzle piece 130.
- the nozzle piece 130 has a fastening hole 131 is formed, and may be assembled with the body portion 110 by a known bolt or rivet as a fastening member.
- the nozzle piece 130 assembled to the body part 110 by the fastening member can be easily replaced in the body part 110, so that only the nozzle piece 130 is replaced in the turbine device to change the width of the exhaust flow path. Turbine capacity can be easily changed.
- Figure 4 (a) (b) is a view showing the cross-sectional configuration of A-A and B-B of Figure 2, respectively, (c) (d) is a view showing a different embodiment respectively.
- the exhaust passage 121 has a rectangular (or rectangular) cross section, and as illustrated in (b), the nozzle piece 130 fixed to the outer side at the tip side of the exhaust passage and
- a rectangular (or rectangular) exhaust passage 121 may be provided by the guide side GS facing the same, thereby minimizing fluid resistance discharged along the exhaust passage 121.
- the lower edge of the exhaust passage 121 may have a curved surface rather than a right angle.
- the guide part 120 may further include a departure preventing jaw 122 contacting the outer surface of the nozzle piece 130.
- the release prevention jaw 122 can firmly support the nozzle piece 130 against the centrifugal force of the nozzle piece 130 that acts in the radial direction during the rotational drive of the nozzle rotor, thereby preventing the nozzle piece from being detached from the body portion. have.
- FIG. 5 is a plan view of a nozzle rotating body for a reaction steam turbine according to another embodiment of the present invention.
- the nozzle rotating body 200 is provided with a disc-shaped body portion 210 and a body having a plurality of exhaust passages 221 integrally provided with the body portion 210.
- Including the portion 220 and the nozzle piece 230 positioned at each tip of the exhaust passage 221 and assembled with the body portion 210 is substantially the same as the above-described embodiment (see FIGS. 2 and 3). The same will be described below based on the differences.
- the nozzle piece 230 is fixed inward at the tip of each exhaust flow path 221 and has a narrow section along with the guide side surface GS of the guide part 220 facing the nozzle piece 230.
- An exhaust passage is provided to eject the fluid.
- the guide part 220 has a hollow hole 222 provided therein to minimize the turbine startup time by reducing the weight of the rotor, and reduce the frictional loss of the bearing for supporting the rotor to reduce the efficiency of the turbine. It can be improved.
- the nozzle piece 230 in the present embodiment is characterized in that the assembly with the body portion 210 by a fastening member including at least one or more bolts, at least one assembly pin.
- one side of the nozzle piece 230 is in close contact with the guide part 220, and is assembled with the body part 210 by two bolts 241 and one assembly pin 242. .
- the assembly pin 242 supports a shear stress greater than that of the bolt 241, the assembly pin 242 can be firmly fixed to the nozzle piece 230 even under a large impact load acting on the nozzle piece 230 as compared with the case of using only the bolt. .
- Reference numeral CV is a cover which is combined with the nozzle rotating body to constitute the nozzle assembly.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Nozzles (AREA)
Abstract
Description
Claims (6)
- 중앙에 회전축과 결합되는 축공이 형성되는 디스크 형상의 몸체부와;상기 축공에 대해 나선 방향으로 서로 등각을 이루는 다수의 배기유로를 제공하게 되는 가이드측면을 갖도록 상기 몸체부와 일체로 연직 방향으로 돌출 형성된 가이드부와;상기 배기유로의 단면과 동일한 형상의 단면을 갖고 폭이 좁아지는 구간을 갖도록 상기 배기유로의 각 선단에 위치하여 상기 몸체부와 조립되는 노즐편과;상기 노즐편과 상기 몸체부를 결합하는 최소한 하나 이상의 볼트 및 조립핀을 포함하는 체결부재;를 포함하는 반작용식 스팀 터빈용 노즐 회전체.
- 제1항에 있어서, 상기 노즐편은 배기유로의 선단에서 바깥 측에 고정되어 노즐편과 대면하게 되는 가이드부의 가이드측면과 함께 폭이 좁은 구간의 배기유로를 제공하게 되는 것을 특징으로 하는 반작용식 스팀 터빈용 노즐 회전체.
- 제1항 또는 제2항에 있어서, 상기 가이드부는 상기 몸체부의 반경방향에 대해 상기 노즐편의 바깥 면을 지지하게 되는 이탈방지턱을 더 포함하는 반작용식 스팀 터빈용 노즐 회전체.
- 제1항에 있어서, 상기 배기유로의 단면은 사각형인 것을 특징으로 하는 반작용식 스팀 터빈용 노즐 회전체.
- 제4항에 있어서, 상기 배기유로의 모서리는 곡면인 것을 특징으로 하는 반작용식 스팀 터빈용 노즐 회전체.
- 제1항에 있어서, 상기 가이드부는 가이드측면 안쪽으로 중공홀이 형성되는 것을 특징으로 하는 반작용식 스팀 터빈용 노즐 회전체.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/025,692 US20160245085A1 (en) | 2013-09-30 | 2014-05-23 | Rotation body of nozzle for reaction-type steam turbine |
EP14848080.9A EP3054087A4 (en) | 2013-09-30 | 2014-05-23 | Rotation body of nozzle for reaction-type steam turbine |
JP2016540785A JP2016530449A (ja) | 2013-09-30 | 2014-05-23 | 反作用式スチームタービン用ノズル回転体 |
CN201480044248.6A CN105452606B (zh) | 2013-09-30 | 2014-05-23 | 用于反动式汽轮机的喷嘴旋转体 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR20130115982A KR20150038770A (ko) | 2013-09-30 | 2013-09-30 | 반작용식 스팀 터빈용 노즐 회전체 |
KR10-2013-0115982 | 2013-09-30 |
Publications (1)
Publication Number | Publication Date |
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WO2015046704A1 true WO2015046704A1 (ko) | 2015-04-02 |
Family
ID=52743797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/KR2014/004627 WO2015046704A1 (ko) | 2013-09-30 | 2014-05-23 | 반작용식 스팀 터빈용 노즐 회전체 |
Country Status (6)
Country | Link |
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US (1) | US20160245085A1 (ko) |
EP (1) | EP3054087A4 (ko) |
JP (1) | JP2016530449A (ko) |
KR (1) | KR20150038770A (ko) |
CN (1) | CN105452606B (ko) |
WO (1) | WO2015046704A1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3124784A1 (de) | 2015-07-30 | 2017-02-01 | Sabine Hilpert | Vorrichtung zur energieumwandlung |
RU2759465C1 (ru) * | 2021-05-18 | 2021-11-15 | Матвей Романович Желудков | Паротурбинный двигатель с электрогенератором |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US10519858B2 (en) * | 2016-07-22 | 2019-12-31 | Brent Wei-Teh LEE | Engine, rotary device, power generator, power generation system, and methods of making and using the same |
KR20180109172A (ko) * | 2017-03-27 | 2018-10-08 | 송길봉 | 노즐을 감싸는 폐쇄형 터빈장치 |
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- 2014-05-23 CN CN201480044248.6A patent/CN105452606B/zh not_active Expired - Fee Related
- 2014-05-23 JP JP2016540785A patent/JP2016530449A/ja active Pending
- 2014-05-23 WO PCT/KR2014/004627 patent/WO2015046704A1/ko active Application Filing
- 2014-05-23 US US15/025,692 patent/US20160245085A1/en not_active Abandoned
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3124784A1 (de) | 2015-07-30 | 2017-02-01 | Sabine Hilpert | Vorrichtung zur energieumwandlung |
DE102015112569A1 (de) * | 2015-07-30 | 2017-02-02 | Sabine Hilpert | Vorrichtung zur Energieumwandlung |
RU2759465C1 (ru) * | 2021-05-18 | 2021-11-15 | Матвей Романович Желудков | Паротурбинный двигатель с электрогенератором |
Also Published As
Publication number | Publication date |
---|---|
US20160245085A1 (en) | 2016-08-25 |
CN105452606A (zh) | 2016-03-30 |
KR20150038770A (ko) | 2015-04-09 |
JP2016530449A (ja) | 2016-09-29 |
EP3054087A1 (en) | 2016-08-10 |
CN105452606B (zh) | 2017-09-08 |
EP3054087A4 (en) | 2017-05-17 |
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