DE2547503A1 - Double impeller wind power unit - has higher speed small impeller geared to lower speed larger impeller to produce sum output - Google Patents

Double impeller wind power unit - has higher speed small impeller geared to lower speed larger impeller to produce sum output

Info

Publication number
DE2547503A1
DE2547503A1 DE19752547503 DE2547503A DE2547503A1 DE 2547503 A1 DE2547503 A1 DE 2547503A1 DE 19752547503 DE19752547503 DE 19752547503 DE 2547503 A DE2547503 A DE 2547503A DE 2547503 A1 DE2547503 A1 DE 2547503A1
Authority
DE
Germany
Prior art keywords
impeller
wind power
geared
wind
power unit
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.)
Pending
Application number
DE19752547503
Other languages
German (de)
Inventor
Hans-Joachim Prof Dr Brockmann
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.)
BROCKMANN HANS JOACHIM PROF DR
Original Assignee
BROCKMANN HANS JOACHIM PROF DR
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 BROCKMANN HANS JOACHIM PROF DR filed Critical BROCKMANN HANS JOACHIM PROF DR
Priority to DE19752547503 priority Critical patent/DE2547503A1/en
Publication of DE2547503A1 publication Critical patent/DE2547503A1/en
Pending legal-status Critical Current

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 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors coaxially arranged
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

The arrangement is intended to make better use of the available wind power in installations whose maximum impeller dia. is pre-determined. For an impeller (3) of given dia. the optimism speed is a function of the wind velocity, and most of the energy is generated in the area away from the hub. To make better use of the wind velocity nearer the hub, a second, smaller impeller (1) is arranged, co-axial relative to the first, mains impeller (3). The optimism speed of the second impella is greater than that of the first. The two impellers are coupled by gearing (2) and jointly drive a generator (4).

Description

Windkraftanlage zur besseren Ausnutzung des Luftstromes Wind power plant for better utilization of the air flow

Die Erfindung betrifft Windkraftanlagen, deren maximaler Windraddurchmesser vorgegeben ist, und bezweckt die bessere Ausnutzung des antreibenden Luftstromes.The invention relates to wind turbines, the maximum wind turbine diameter is given, and aims to better utilize the driving air flow.

Es ist bekannt, daß die Leistung von Windrädern mit geringer Flügel zahl und großer Flügellänge hauptsächlich in den nabenfernen Bereichen der Windflügel erzeugt wird. Dies ist vor allem dadurch bedingt, daß es für jedes Flügelprofil ein vom Anstellwinkel (Winkel zwischen relativer Anströmrichtung und Profilsehne) abhängiges optimales Verhältnis der Wiudradumfangsgeschwindigkeit zur Windgeschwindigkeit gibt. Theorie und Praxis der Windräder zeigen, daß die optimalen Verhältnisse der Radumfangsgeschwindigkeit zur Windgeschwindigkeit verhältnismäßig groß sind. Die günstigsten Umfangsgeschwindigkeiten liegen beträchtlich über den Windgeschwindigkeiten. Wegen der geringen Umfangsgeschwindigkeiten in Nabennähe ist es deshalb bei unverwundenen oder nur gering verwundenen Windflügeln üblich, den leistungserzeugenden profilierten Teil erst in einiger radialer Entfernung von der Windraddrehachse anzusetzen. Wenn er bei stärker verwundenen Flügeln bis nahe an die Raddrehachse heranreicht, so wird damit meist eine Erhöhung des Anfahrmomentes durch den großen Einstellwinkel (Winkel zwischen Profilsehne und Raddrehebene) angestrebt. Auf Jeden Fall wird aber bei allen Windrädern dieser Bauart die Windenergie in der Nähe der Windradnabe wegen der hier geringen Umfangsgeschwindigkeit schlecht ausgenutzt.It is known that the performance of wind turbines with smaller blades number and length of the blades mainly in the areas of the blades remote from the hub is produced. This is mainly due to the fact that it is necessary for each wing profile one of the angle of attack (angle between relative direction of flow and profile chord) dependent optimal ratio of the peripheral speed of the wheel to the wind speed gives. The theory and practice of wind turbines show that the optimal proportions of the The peripheral speed of the wheel is relatively large to the wind speed. the The most favorable circumferential speeds are considerably higher than the wind speeds. Because of the low circumferential speeds near the hub, it is therefore not twisted or only slightly twisted wind blades are common, the power-generating profiled Part only to be applied at a certain radial distance from the wind turbine axis of rotation. if If the wings are more twisted, it comes close to the wheel's axis of rotation, see above This usually results in an increase in the starting torque due to the large setting angle (Angle between profile chord and wheel turning plane) aimed. In any case, it will in all wind turbines of this type, the wind energy in the vicinity of the wind turbine hub because of the low peripheral speed here is poorly exploited.

Ziel der Erfindung ist eine bessere Nutzung der Windenergie über die gesamte radiale Erstreckung des Windrades bis in Naben.The aim of the invention is a better use of wind energy over the entire radial extension of the wind turbine up to the hubs.

nähe.vicinity.

Dies wird dadurch erreicht, daß vor einem Windrad, nachfolgend als Hauptrotor bezeichnet, ein zweites Windrad von kleinerem Durchmesser, nachfolgend als Hilfsrotor bezeichnet, koaxial angeordnet wird. Der Hilfsrotor ist über ein Getriebe mit dem Hauptrotor so gekuppelt, daß er mit größerer Drehzahl als der Hauptrotor umläuft. Die Leistung der Windkraftanlage ergibt sich durch Summierung der Leistung des Hauptrotors und der Leistung des Hilfsrotors.This is achieved in that in front of a wind turbine, hereinafter referred to as Main rotor referred to, a second wind turbine of smaller diameter, hereinafter referred to as an auxiliary rotor, is arranged coaxially. The auxiliary rotor is about a Gearbox coupled to the main rotor so that it rotates at a higher speed than the main rotor running around. The output of the wind turbine is obtained by adding up the output of the main rotor and the power of the auxiliary rotor.

Die Erfindung wird anhand einiger Abbildungen erläutert.The invention is explained with the aid of a few figures.

Abbildung 1 zeigt schematisch eine Windkraftanlage. Der Hilfsrotor (1) ist durch ein Getriebe (2) mit dem Hauptrotor (3) gekuppelt. Beide Rotoren treiben gemeinsam die Arbeitsmaschine (4) an.Figure 1 shows a schematic of a wind turbine. The auxiliary rotor (1) is coupled to the main rotor (3) by a gear (2). Both rotors are driving jointly the working machine (4).

Abbildung 2 zeigt schematisch den Hilfsrotor (1) und den Hauptrotor (3) einer Windkraftanlage in Vorderansicht. Die Drehkreise beider Rotoren sind strichpunktiert eingezeichnet.Figure 2 shows schematically the auxiliary rotor (1) and the main rotor (3) a wind turbine in front view. The circles of rotation of both rotors are dash-dotted drawn.

LeerseiteBlank page

Claims (1)

Patentansprchq 1. Windkraftanlage zur besseren Ausnutzung des Luftstromes, dadurch gekennzeichnet, daß vor einem Windrad koaxial ein zweites Windrad von kleinerem Durchmesser angeordnet ist, das mit höherer Drehzahl als das größere Windrad umläuft und über ein Getriebe mit dem größeren Windrad so gekuppelt ist, daß die Leistung der Windkraftanlage sich aus der Summe der Leistungen beider Windräder ergibt. Patent claim 1. Wind power plant for better utilization of the air flow, characterized in that a second wind turbine of a smaller size coaxially in front of a wind turbine Diameter is arranged, which rotates at a higher speed than the larger wind turbine and is coupled to the larger wind turbine via a transmission so that the power of the wind turbine results from the sum of the outputs of both wind turbines.
DE19752547503 1975-10-21 1975-10-21 Double impeller wind power unit - has higher speed small impeller geared to lower speed larger impeller to produce sum output Pending DE2547503A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752547503 DE2547503A1 (en) 1975-10-21 1975-10-21 Double impeller wind power unit - has higher speed small impeller geared to lower speed larger impeller to produce sum output

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752547503 DE2547503A1 (en) 1975-10-21 1975-10-21 Double impeller wind power unit - has higher speed small impeller geared to lower speed larger impeller to produce sum output

Publications (1)

Publication Number Publication Date
DE2547503A1 true DE2547503A1 (en) 1977-04-28

Family

ID=5959922

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752547503 Pending DE2547503A1 (en) 1975-10-21 1975-10-21 Double impeller wind power unit - has higher speed small impeller geared to lower speed larger impeller to produce sum output

Country Status (1)

Country Link
DE (1) DE2547503A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726357A1 (en) * 1994-10-26 1996-05-03 Sauvestre Jean Claude TELESCOPED BOOM HUNTING BALL, COMPRISING A SUB-PROJECTILE ASSOCIATED WITH A LAUNCHER
DE29706980U1 (en) * 1997-01-29 1997-07-10 Schulte, Walter, 37688 Beverungen Gondola of a wind turbine
JP2006177370A (en) * 2000-01-26 2006-07-06 Aloys Wobben Wind power generating device
CN108331704A (en) * 2018-02-13 2018-07-27 佛山科学技术学院 A kind of horizontally-opposed twin turbines hydraulic drive type energy by ocean current electricity generation system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726357A1 (en) * 1994-10-26 1996-05-03 Sauvestre Jean Claude TELESCOPED BOOM HUNTING BALL, COMPRISING A SUB-PROJECTILE ASSOCIATED WITH A LAUNCHER
WO1996013697A1 (en) * 1994-10-26 1996-05-09 Sauvestre Jean Claude Telescoping arrow-type hunting bullet with a sub-projectile combined with a launching element
US5804759A (en) * 1994-10-26 1998-09-08 Sauvestre; Jean-Claude Hunting bullet having a telescoping flechette and comprising a sub-projectile connected to a launcher
DE29706980U1 (en) * 1997-01-29 1997-07-10 Schulte, Walter, 37688 Beverungen Gondola of a wind turbine
JP2006177370A (en) * 2000-01-26 2006-07-06 Aloys Wobben Wind power generating device
US7074011B1 (en) 2000-01-26 2006-07-11 Aloys Wobben Wind power installation with two rotors in tandem
CN108331704A (en) * 2018-02-13 2018-07-27 佛山科学技术学院 A kind of horizontally-opposed twin turbines hydraulic drive type energy by ocean current electricity generation system
CN108331704B (en) * 2018-02-13 2023-12-26 佛山科学技术学院 Horizontal opposite double-turbine hydraulic transmission type ocean current energy power generation system

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