WO2018146584A1 - Wind power plant with low environmental impact - Google Patents

Wind power plant with low environmental impact Download PDF

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Publication number
WO2018146584A1
WO2018146584A1 PCT/IB2018/050631 IB2018050631W WO2018146584A1 WO 2018146584 A1 WO2018146584 A1 WO 2018146584A1 IB 2018050631 W IB2018050631 W IB 2018050631W WO 2018146584 A1 WO2018146584 A1 WO 2018146584A1
Authority
WO
WIPO (PCT)
Prior art keywords
duct
trench
turbine
power plant
wind power
Prior art date
Application number
PCT/IB2018/050631
Other languages
French (fr)
Inventor
Enrico Valditerra
Original Assignee
Enrico Valditerra
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 Enrico Valditerra filed Critical Enrico Valditerra
Publication of WO2018146584A1 publication Critical patent/WO2018146584A1/en

Links

Classifications

    • 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
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/04—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • 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
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/04—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • 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
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/30—Wind motors specially adapted for installation in particular locations
    • F03D9/48—Wind motors specially adapted for installation in particular locations using landscape topography, e.g. valleys
    • 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
    • F05B2240/133—Stators to collect or cause flow towards or away from turbines with a convergent-divergent guiding structure, e.g. a Venturi conduit
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • the present invention relates to a wind power plant with low environmental impact. More in particular, it concerns an improvement to the wind power plant with low environmental impact described and claimed in the Italian patent N° 1412898 filed by the same holder of this patent application, Mr. Enrico Valditerra.
  • This patent describes a wind power plant comprising a tubular duct carrying at each end a turbine and means to transmit the rotation of the turbines to an electricity generator supported at the centre of the duct, the duct being supported so that it can rotate about the central vertical axis thereof, on rotation supports and installable in a trench that extends opening from one side of a mountain ridge to the other, and said tubular duct being suitable to extend from one end of said trench to the other.
  • Another drawback is due to the fact that the idle turbine that is located at the end of the duct opposite the direction of the wind partially obstructs the wind exiting from the same duct, thereby preventing the plant from operating with optimum performance.
  • FIG. 1 and 2 are side elevation views with parts in section of the wind power plant according to the invention, illustrated with the tubular duct respectively in extended position and retracted position.
  • the letter C indicates the ridge of a mountain on which a trench F is excavated, which passes through the ridge from one side to the opposite side.
  • the wind power plant which comprises a tubular duct 1 , composed of various sections arranged coaxially and sliding on each other telescopically.
  • retraction and extension movement of these telescoping sections can be produced in any suitable way, for example by means of a rack and pinion assembly operated by a specific motor, or with an equivalent solution.
  • the telescoping sections are three in number, indicated with 101 , 201 and 301 , but it would also be possible to use a higher or lower number in relation to the effects of the outflow, also as a function of the size of the trench F in which the plant is assembled.
  • a turbine 2 is assembled, for example of the type used in the reaction motors of aircrafts or any other wind generator existing on the market, either with horizontal axis or vertical axis, in this latter case adapting the transmission of motion to the electricity generator, with respect to the structure and the shaft 3 of this turbine transmits the motion to an electricity generator 4 supported by specific supports 104, 204 provided inside the same duct.
  • This section 101 of the duct 1 is in turn supported so that it can rotate by slewing rings 5, 105 fixed inside the trench F.
  • the generator 4 is coaxially positioned with respect to the shaft 3 of the turbine, but it could also be in a different position such as to reduce to a minimum the interference with the wind flow that circulates inside the duct, so as to allow the plant to operate with optimum performance.
  • a further trench F2 is excavated to house a motor 8, which through a shaft 108 transmits motion to the slewing ring 5 that allows the duct 1 to rotate, this motor being governed by a processor 7 that receives a signal from a wind sensor 66 installed outside the trench F2 and orients the mouth of the duct provided with the turbine 2 in optimal direction with respect to the wind flow.
  • the duct 1 Before starting to rotate, the duct 1 is taken to the condition of minimum footprint with the telescoping sections of which it is composed positioned in the retracted position through the action of the movement unit thereof, which is preferably also governed by the processor 7.
  • the telescoping sections of the same duct are extended to a degree that ensures optimal discharge of the wind flow outside the same duct, with sliding of the sections that can also vary as a function of the shape of the ridge.
  • the wind flow entering the duct 1 places the turbine 2 in rotation, and the drive shaft 3 thereof can therefore activate the generator 4 for the production of electricity.
  • the areas of the trench F located at the side of the two inlet and outlet mouths of the duct 1 can be temporarily closed by specific shutters, not illustrated.
  • the trench F will be suitably closed and the area above it can undergo a reforestation operation that will reduce the environmental impact to a minimum.

Abstract

Wind power plant with low environmental impact, comprising a tubular duct (1) carrying at one end a turbine (2) and means (3) to transmit the rotation of the turbine (2) to an electricity generator (4) supported at the centre of the duct (1), the duct (1) being supported so that it can rotate about the central vertical axis thereof, on rotation supports (5, 105) inside a trench (F) that extends opening from one side of a mountain ridge to the other, said tubular duct (1) being composed of a plurality of coaxial sections (101, 201, 301) connected to each other telescopically, which in the position of extension of the telescoping tubular elements extend from one end of said trench (F) to the other, while in the retracted position thereof the horizontal footprint is drastically reduced so as to allow them to rotate inside the trench (F) in a horizontal plane with any angle from 0 to 360° to position the end of the duct (1) carrying the turbine (2) with optimal orientation with respect to the direction of the wind, characterized in that it comprises a motor (8) that controls the rotation of said duct (1) by means of a drive shaft (108).

Description

TITLE
WIND POWER PLANT WITH LOW ENVIRONMENTAL IMPACT
DESCRIPTION
The present invention relates to a wind power plant with low environmental impact. More in particular, it concerns an improvement to the wind power plant with low environmental impact described and claimed in the Italian patent N° 1412898 filed by the same holder of this patent application, Mr. Enrico Valditerra.
This patent describes a wind power plant comprising a tubular duct carrying at each end a turbine and means to transmit the rotation of the turbines to an electricity generator supported at the centre of the duct, the duct being supported so that it can rotate about the central vertical axis thereof, on rotation supports and installable in a trench that extends opening from one side of a mountain ridge to the other, and said tubular duct being suitable to extend from one end of said trench to the other.
The fact of having to provide both ends of the tubular duct of the turbines with related motion transmission means and the same number of electricity generators in order to exploit the winds coming from both north and south means a considerable increase in costs.
Another drawback is due to the fact that the idle turbine that is located at the end of the duct opposite the direction of the wind partially obstructs the wind exiting from the same duct, thereby preventing the plant from operating with optimum performance.
According to the present invention, it was decided to overcome the problems described above by rotating the tubular duct through 180°, so that the always same turbine is exposed to the wind, thereby eliminating one of the turbines.
Naturally, this solution means considerable savings can be made in the cost of the plant. However, such rotation of the plant would have required excessive widening of the excavation to allow the tubular duct to be rotated through 180°.
It was decided to solve this problem by producing this duct by means of a plurality of sections suitable to be retracted inside each other telescopically, so as to be able to reduce the horizontal footprint of the plant during rotation thereof to an acceptable level.
Further objects and advantages of the present invention will be more apparent from the following description of an embodiment thereof, made with reference to the accompanying drawings, wherein:
- Figs 1 and 2 are side elevation views with parts in section of the wind power plant according to the invention, illustrated with the tubular duct respectively in extended position and retracted position.
In these figures the letter C indicates the ridge of a mountain on which a trench F is excavated, which passes through the ridge from one side to the opposite side.
Installed inside this trench F is the wind power plant according to the invention, which comprises a tubular duct 1 , composed of various sections arranged coaxially and sliding on each other telescopically.
The retraction and extension movement of these telescoping sections can be produced in any suitable way, for example by means of a rack and pinion assembly operated by a specific motor, or with an equivalent solution.
In the embodiment illustrated in the figures, the telescoping sections are three in number, indicated with 101 , 201 and 301 , but it would also be possible to use a higher or lower number in relation to the effects of the outflow, also as a function of the size of the trench F in which the plant is assembled.
In the end mouth of a first section 101 , opposite the one carrying the other telescoping sections of the duct 1 , a turbine 2 is assembled, for example of the type used in the reaction motors of aircrafts or any other wind generator existing on the market, either with horizontal axis or vertical axis, in this latter case adapting the transmission of motion to the electricity generator, with respect to the structure and the shaft 3 of this turbine transmits the motion to an electricity generator 4 supported by specific supports 104, 204 provided inside the same duct.
This section 101 of the duct 1 is in turn supported so that it can rotate by slewing rings 5, 105 fixed inside the trench F.
In the figures, the generator 4 is coaxially positioned with respect to the shaft 3 of the turbine, but it could also be in a different position such as to reduce to a minimum the interference with the wind flow that circulates inside the duct, so as to allow the plant to operate with optimum performance.
Transmission of motion from the shaft 3 to this generator 4 is easily achievable by those skilled in the art and can, for example, consist of a gear assembly.
At the summit of the ridge a further trench F2 is excavated to house a motor 8, which through a shaft 108 transmits motion to the slewing ring 5 that allows the duct 1 to rotate, this motor being governed by a processor 7 that receives a signal from a wind sensor 66 installed outside the trench F2 and orients the mouth of the duct provided with the turbine 2 in optimal direction with respect to the wind flow.
Before starting to rotate, the duct 1 is taken to the condition of minimum footprint with the telescoping sections of which it is composed positioned in the retracted position through the action of the movement unit thereof, which is preferably also governed by the processor 7.
Once the inlet mouth of the rotating duct 1 has reached the desired position with respect to the direction of the wind, the telescoping sections of the same duct are extended to a degree that ensures optimal discharge of the wind flow outside the same duct, with sliding of the sections that can also vary as a function of the shape of the ridge.
The wind flow entering the duct 1 places the turbine 2 in rotation, and the drive shaft 3 thereof can therefore activate the generator 4 for the production of electricity.
The areas of the trench F located at the side of the two inlet and outlet mouths of the duct 1 can be temporarily closed by specific shutters, not illustrated.
After installation of the plant has been completed, the trench F will be suitably closed and the area above it can undergo a reforestation operation that will reduce the environmental impact to a minimum.
It is understood that all those variants and modifications that do not depart from the scope of protection of the present invention can be made to the plant as described, illustrated and claimed below.

Claims

1. A wind power plant with low environmental impact, comprising a tubular duct (1 ) carrying at one end a turbine (2) and means (3) to transmit the rotation of the turbine (2) to an electricity generator (4) supported at the centre of the duct (1 ), the duct (1 ) being supported so that it can rotate about the central vertical axis thereof on rotation supports (5, 105) inside a trench (F) that extends opening from one side of a mountain ridge to the other, and said tubular duct (1 ) being composed of a plurality of coaxial sections (101 , 201 , 301 ) connected to each other telescopically, which in the position of extension of the telescoping tubular elements extend from one end of said trench (F) to the other, while in the retracted position thereof the horizontal footprint is drastically reduced so as to allow them to rotate inside the trench (F) in a horizontal plane with any angle from 0 to 360° to position the end of the duct (1 ) carrying the turbine (2) with optimal orientation with respect to the direction of the wind, characterized in that it comprises a motor (8) that controls the rotation of said duct (1 ) by means of a drive shaft (108).
2. The wind power plant according to claim 1 , wherein said motor (8) is a stepping motor.
3. The wind power plant according to claim 2, wherein said motor (8) is in turn controlled by a microprocessor (7) that receives the signal from the wind sensor (6), installed outside of the underground structure.
PCT/IB2018/050631 2017-02-07 2018-02-01 Wind power plant with low environmental impact WO2018146584A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000013260 2017-02-07
IT102017000013260A IT201700013260A1 (en) 2017-02-07 2017-02-07 Low environmental impact wind farm

Publications (1)

Publication Number Publication Date
WO2018146584A1 true WO2018146584A1 (en) 2018-08-16

Family

ID=59067756

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2018/050631 WO2018146584A1 (en) 2017-02-07 2018-02-01 Wind power plant with low environmental impact

Country Status (2)

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IT (1) IT201700013260A1 (en)
WO (1) WO2018146584A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178124A (en) * 1978-04-17 1979-12-11 Alexander Puskas Turbine apparatus
JPS61132780A (en) * 1984-11-29 1986-06-20 Shunsuke Iizuka Wind force regulator for air duct wind force generator
US20110014038A1 (en) * 2007-03-23 2011-01-20 Flodesign Wind Turbine Corporation Wind turbine with skeleton-and-skin structure
KR20130102696A (en) * 2012-03-08 2013-09-23 미르텍알앤디 주식회사 Apparatus for opening and closing slide type inlet of wind power generator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178124A (en) * 1978-04-17 1979-12-11 Alexander Puskas Turbine apparatus
JPS61132780A (en) * 1984-11-29 1986-06-20 Shunsuke Iizuka Wind force regulator for air duct wind force generator
US20110014038A1 (en) * 2007-03-23 2011-01-20 Flodesign Wind Turbine Corporation Wind turbine with skeleton-and-skin structure
KR20130102696A (en) * 2012-03-08 2013-09-23 미르텍알앤디 주식회사 Apparatus for opening and closing slide type inlet of wind power generator

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Publication number Publication date
IT201700013260A1 (en) 2018-08-07

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