CN201739099U - Blade structure of wind generator - Google Patents

Blade structure of wind generator Download PDF

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Publication number
CN201739099U
CN201739099U CN2010202160341U CN201020216034U CN201739099U CN 201739099 U CN201739099 U CN 201739099U CN 2010202160341 U CN2010202160341 U CN 2010202160341U CN 201020216034 U CN201020216034 U CN 201020216034U CN 201739099 U CN201739099 U CN 201739099U
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CN
China
Prior art keywords
wind
steel wire
blade
consuming
blade structure
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Expired - Lifetime
Application number
CN2010202160341U
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Chinese (zh)
Inventor
吴东垠
姚季
朱良松
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Xian Jiaotong University
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Xian Jiaotong University
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Priority to CN2010202160341U priority Critical patent/CN201739099U/en
Application granted granted Critical
Publication of CN201739099U publication Critical patent/CN201739099U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

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Abstract

The utility model discloses a wind generator blade structure which comprises a plurality of wind consuming holes, baffle plates, a D-shaped longitudinal steel beam, elastic hinges, a long steel wire, short steel wires, perforated baffle plates, wind consuming hole cover plate and hooks, wherein the wind consuming holes are formed in a region with larger windward area in the axial direction of the blade; one side of each wind consuming hole cover plate is connected with the D-shaped longitudinal steel beam through the corresponding elastic hinge; each hook is arranged in the middle of the corresponding wind consuming hole cover plate; the two ends of each short steel wire are connected with the corresponding hooks; and one end of the long steel wire is connected with the middle parts of the short steel wires, while the other end of the long steel wire is connected with a motor at the root of the blade. The blade structure of the utility model can reduce the energy capturing of a wind wheel, so as to keep the rotational speed of the wind wheel under the rated value. At the same time, the blade structure reduces the load on the blade and the impact on the whole wind machine, so as to ensure the wind machine from being damaged.

Description

A kind of blade structure for wind driven generator
Technical field
The utility model relates to technical field of wind power generating equipment, relates in particular to a kind of power-driven generator leaf structure.
Background technique
Along with the mankind to the requirement of ecotope with to the needs of the energy, the exploitation exploitation of wind energy comes into one's own day by day, wind-power electricity generation will become a kind of renewable and clean energy resource of 21 century large-scale development.Wind energy is a kind of as renewable energy sources, and is quite abundant the reserves of China.Along with improve constantly the continuous maturation with small-size wind power-generating technology of people to wind-power electricity generation understanding, its application also more and more widely.
Wind-driven generator is to utilize the wind energy of occurring in nature to make it to be converted into the electricity generating device of electric energy.Wind power generating set is operated in certain wind speed range, under a lot of situations, no matter require the wind energy conversion system wind speed how to change, always rotating speed keeps constant or is no more than a certain limit value.Wind power generating set is after surpassing rated wind speed, because the restriction of mechanical strength and physical properties such as generator, power electronics capacity, must reduce the energy capture of wind wheel, reduce blade and bear the impact that load and whole wind machine are received, power output is remained near the rating value, guarantee that wind energy conversion system does not suffer damage.Wind speed is an amount that randomness is very big, all may change with changes of seasons in time, in addition fast changing.The formula of energy in the wind: W=1/2 ρ v 3In the F formula, W is a wind power, kg-m 2/ s 3ρ is an air density, kg-m 3V is a wind speed, m/s; F is the section area that air flows through, m 2From then on formula as can be seen, cube being directly proportional of area, air density and the airspeed that the size of wind energy and air communication are crossed.Wind speed doubles, and wind energy can increase octuple, and like this surprising energy changing has proposed high requirement to the reliability of wind-driven generator etc.Present power mode mainly can be divided into two kinds of stall-adjusted and feathers.Though stall-adjusted is simple in structure, easy to maintenance, the cabin is heavier, and transportation and hoisting difficulty are big, and the basis is big, cost is high; Feather structure stress minimum, main frame and pylon are in light weight, and transportation and hoisting difficulty are little, but the system architecture complexity of feather, rate of fault is high slightly, and is higher to operation, administrative staff's competency profiling.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned prior art deficiency, and a kind of blade structure for wind driven generator is provided, and is that rotating speed makes wheel speed more stable thereby can regulate wind-exposuring area automatically.The new blade that the utility model relates to is the blade perforation structure, promptly along the bigger place punching of the axial direction wind-exposuring area of blade, to reduce the wind-exposuring area of blade, reaches the purpose that reduces wind speed.
The technical solution of the utility model is to solve like this: this blade structure comprises consumption wind hole, blade body, baffle plate, D shaped steel longeron, elastic hinge, long steel wire, short steel wire, porose baffle plate, consumption wind blind patch and hook, be provided with a plurality of consumption wind hole in the big place of the axial direction wind-exposuring area of blade body, one side of consumption wind blind patch is connected by elastic hinge with D shaped steel longeron, centre at consumption wind blind patch is provided with hook, and short steel wire two ends are connected with the hook of the centre of consuming the wind blind patch respectively.
Arrange baffle plate and porose baffle plate around consumption wind hole, be symmetric arrangement, long steel wire passes from porose baffle plate respectively with short steel wire.
Adopt the utility model to reduce the energy capture of wind wheel, wheel speed is remained on below the rating value.Reduce blade simultaneously and bear load and the whole wind machine impact of receiving, the assurance wind energy conversion system does not suffer damage.
Description of drawings
Fig. 1 structural representation of the present utility model; Fig. 2 is Figure 1A-A blade radial schematic cross-section; Fig. 3 is that Figure 1B-B sharf is to (consumption wind bore closure) schematic cross-section; Fig. 4 is that sharf is to (open in consumption wind hole) schematic cross-section; Label among the figure is represented respectively: 1, consumption wind hole; 2, blade body; 3, baffle plate; 4, D shaped steel longeron; 5, thin plate girt strip; 6, foamed plastics; 7, glass fibre reinforced plastics covering; 8, elastic hinge; 9, long steel wire; 10, lack steel wire; 11, porose baffle plate; 12, consumption wind blind patch; 13, hook.
Below in conjunction with accompanying drawing content of the present utility model is described in further detail.
Embodiment
Shown in Fig. 1-4, this blade structure comprises consumption wind hole 1, baffle plate 3, D shaped steel longeron 4, thin plate girt strip 5, foamed plastics 6, glass fibre reinforced plastics covering 7, elastic hinge 8, long steel wire 9, short steel wire 10, porose baffle plate 11, consumption wind blind patch 12 and links up with 13.Wherein, as shown in Figure 1, be provided with a plurality of consumption wind hole 1 in the bigger place of the axial direction wind-exposuring area of blade; As shown in Figure 2, on D shaped steel longeron 4, be provided with consumption wind hole 1, filling foamed plastics 6 between thin plate girt strip 5 and the glass fibre reinforced plastics covering 7; As shown in Figure 3, one side of consumption wind blind patch 12 and D shaped steel longeron 4 are connected by elastic hinge; Short steel wire 10 two ends are connected with the hook 13 of the centre of consuming the wind blind patch respectively; One end of long steel wire 9 is connected with the intermediate point of short steel wire 10, and the other end links to each other with the motor at blade body 2 blade roots place; Arrange baffle plate 3 and porose baffle plate 11 around consumption wind hole, be symmetric arrangement, long steel wire 9 passes from porose baffle plate respectively with short steel wire 10; As shown in Figure 4, long steel wire 9 passes from porose baffle plate respectively with short steel wire 10, when open in consumption wind hole 1, can guarantee wind from consumption wind hole 1 smoothly by and do not enter the cavity of blade 2 inside.
When impeller hub place wind speed surpasses the rated wind speed certain value, electric motor starting and the long steel wire 9 of pulling are opened consumption wind hole 1, and (aperture in consumption wind hole 1 can change with the size of wind speed) reduces the wind-exposuring area of blade, reduce the energy capture of wind wheel, wind speed round is remained on below the rating value.When impeller hub place wind speed is lower than or during less than rated wind speed, the motor unloading, normal state is recovered in consumption wind hole under the effect of elastic hinge.

Claims (2)

1. blade structure for wind driven generator, this blade structure comprises consumption wind hole (1), blade body (2), baffle plate (3), D shaped steel longeron (4), elastic hinge (8), long steel wire (9), short steel wire (10), porose baffle plate (11), consumption wind blind patch (12) and hook (13), it is characterized in that, the big place of axial direction wind-exposuring area at blade body (2) is provided with a plurality of consumption wind holes (1), one side of consumption wind blind patch (12) is connected by elastic hinge (8) with D shaped steel longeron (4), centre at consumption wind blind patch (12) is provided with hook (13), and short steel wire (10) two ends are connected with the hook (13) of the centre of consuming wind blind patch (12) respectively.
2. according to claims 1 described blade structure, it is characterized in that, arrange baffle plate (3) and porose baffle plate (11) all around in consumption wind hole (1), be symmetric arrangement, long steel wire (9) passes from porose baffle plate (11) respectively with short steel wire (10).
CN2010202160341U 2010-06-04 2010-06-04 Blade structure of wind generator Expired - Lifetime CN201739099U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202160341U CN201739099U (en) 2010-06-04 2010-06-04 Blade structure of wind generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202160341U CN201739099U (en) 2010-06-04 2010-06-04 Blade structure of wind generator

Publications (1)

Publication Number Publication Date
CN201739099U true CN201739099U (en) 2011-02-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202160341U Expired - Lifetime CN201739099U (en) 2010-06-04 2010-06-04 Blade structure of wind generator

Country Status (1)

Country Link
CN (1) CN201739099U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101825070A (en) * 2010-06-04 2010-09-08 西安交通大学 Blade structure for wind driven generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101825070A (en) * 2010-06-04 2010-09-08 西安交通大学 Blade structure for wind driven generator
CN101825070B (en) * 2010-06-04 2012-11-28 西安交通大学 Blade structure for wind driven generator

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20110209

Effective date of abandoning: 20130227

RGAV Abandon patent right to avoid regrant