CN104613128A - Balancing weight for wind-power blade - Google Patents
Balancing weight for wind-power blade Download PDFInfo
- Publication number
- CN104613128A CN104613128A CN201410749920.3A CN201410749920A CN104613128A CN 104613128 A CN104613128 A CN 104613128A CN 201410749920 A CN201410749920 A CN 201410749920A CN 104613128 A CN104613128 A CN 104613128A
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- Prior art keywords
- balancing weight
- blade
- resin composite
- rubber
- weight
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/32—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/32—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
- F16F15/34—Fastening arrangements therefor
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention belongs to the technical field of wind power generation, and discloses a balancing weight for a wind-power blade. The balancing weight for the wind-power blade are made of prefabricated composite materials; metal with close density or rubber with high density is served as an inner core (1) of the interior of the balance weight; the exterior of the balance weight adopts fiber reinforced resin composite materials, and an outer layer (2) of an external protective layer and a bonding layer is formed by the fiber reinforced resin composite materials in a way of vacuum perfusion forming or a way of hand lay-up forming; the balancing weight formed by the close density metal or high density rubber inner core (1) and the fiber reinforced resin composite material outer layer (2) is of a small-end-up structure; the bottom of the balancing weight is served as a bonding joint face bonded with a blade shell (3). According to the balancing weight for the wind-power blade, the overall density of the balancing weight is increased, the balancing weight is pre-formed outside the blade, and the labor intensity of interior balancing of the blade is reduced.
Description
Technical field
The invention belongs to technical field of wind power generation, be specifically related to a kind of wind electricity blade balancing weight.
Background technique
Current, wind-power electricity generation, as the utilization of new energy resources form of clean environment firendly, is subject to attention and the exploitation of various countries day by day, and installation total amount is also progressively improving.Wind-driven generator includes many parts, and wherein, the effect of blade is the most important.The wind wheel be made up of blade has promoted the running of blower fan, finally produces electric energy.
A wind power generating set, is generally made up of 1,2,3 or branched wind electricity blade.The rotation of wind wheel, requires that branched interlobate weight, center of gravity mutual deviation are all in certain scope of design, can not be greater than this requirement, otherwise the wind wheel of blower fan rotates then uneven, can have a strong impact on the generating efficiency of blower fan, increase the loss of blower fan.In addition, the gross weight of wind wheel also needs to reach certain value, and then makes wind wheel have enough bearing capacitys, also ensures that the natural frequency of wind wheel is different from the natural frequency of blower fan, makes blower fan smooth running; But the production of wind electricity blade, its each process can have an impact to final weight, often props up the weight of blade, center of gravity and all can be different; In order to make, wind electricity blade weight, the center of gravity of same wind wheel are tending towards identical, gross weight reaches designing requirement, then will carry out balancing to wind electricity blade.
At present, the balancing process of wind electricity blade is as described below: first, carries out root tip 2 weighing, obtain the weight of blade to blade, in conjunction with blade length thus calculate the information such as center of gravity, quality, and judge whether these information and data can meet wind wheel requirement; Next, a qualified wind wheel is formed in order to branched blade can be made, balancing need be carried out to the blade of wherein or branched blade, the mode of balancing is at the balancing weight needing the blade of gaining in weight increases constant weight, thus reach the adjustment of weight between blade, center of gravity, and form qualified wind wheel; Balancing weight is generally the metals such as iron block, lead, copper billet, can gain in weight significantly; These metals also have deficiency, and first, metal is easy to be corroded in the environment; Moreover metal can not be well bonding with the composite material casing of blade.As shown in Figure 1, in order to overcome above problem, usually sticking with glue agent 4 and inner core 1 is first bonded on blade shell 3, and use the skin 4 be made up of fibre reinforced composites to be covered by metal weights block, strengthen the bonding (see figure 2) with blade shell 3; But this process need, in blade interior long-time operation, exists following shortcoming: the first, increase the weight of the on-the-spot composite material hand of process need and stick with paste reinforcement, solidification, process is numerous and diverse, and efficiency is low; The second, blade interior narrow space, air flow property are poor, and when reaching 2 hours bonding, chien shih counterweight task difficulty strengthens, and especially in summer and weather hot area, operator is fatiguability comparatively; In addition, the Counter weight metal block side of mostly being plate shape, is not easy to operation and moves.
Summary of the invention
For solving the problems of the technologies described above, the object of the invention is to propose a kind of wind electricity blade balancing weight.
The present invention adopts following technological scheme for completing above-mentioned purpose:
A kind of wind electricity blade balancing weight, described balancing weight is prefabricated composite material balancing weight; The inside of described balancing weight is using the metal of large density or high density rubber as inner core, the outside of described balancing weight adopts fiber-resin composite, and fiber-resin composite forms the skin as exterior cover sheets and adhesive layer in the mode of vacuum infusion molding or hand pasting forming; Using the metal of large density or high density rubber as inner core, in order to the weight making the weight of balancing weight reach counterweight needed for blade shell; Using fiber-resin composite as exterior cover sheets, inner core can be avoided to be corroded in the environment, play a protective role; Using fiber-resin composite as adhesive layer, with blade shell, there is good adhesive bond, make the bonding more firm of balancing weight and blade shell; The balancing weight that the inner core of large density metal or high density rubber and the skin of fiber-resin composite are formed is up-small and down-big structure; The bottom surface of described balancing weight, as the bonded joints bonding with blade shell, because balancing weight bottom area is comparatively large, increases the bond area with blade shell, further increases the adhesive bond performance of balancing weight and blade shell; Time bonding, need the position of increasing the weight of to carry out the coarse process of surface finish outer field for described balancing weight bottom surface and blade shell, and clean out; Then take a certain amount of adhesive, spread upon the binding site of balancing weight, blade shell; Finally balancing weight is bonded in blade shell inside.
Described large density metal is iron, copper, lead.
Described high density rubber is one or more in polyethylene rubber, isoprene rubber, butyl rubber, nitrile butadiene rubber, ethylene propylene rubber, urethane rubber, polystyrene rubber, neoprene.
Described fiber-resin composite is one or more in glass fiber reinforcement unsaturated resin composite material, glass fiber reinforced polyester resin composite material, glass fiber reinforced polyester ammonia ester resin composite materials, glass fiber reinforced epoxy resin composite material.
Described adhesive can select epoxy adhesive or polyurethane adhesive or acrylate adhesive.
A kind of wind electricity blade balancing weight that the present invention proposes, the inner core of balancing weight adopts metal inside or high density rubber inner core, improves the global density of balancing weight; Balancing weight adopts fiber-resin composite as the skin of exterior cover sheets and adhesive layer; Using fiber-resin composite as exterior cover sheets, inner core can be avoided to be corroded in the environment, play a protective role; Using fiber-resin composite as adhesive layer, with blade shell, there is good adhesive bond, make the bonding more firm of balancing weight and blade shell; The balancing weight that the inner core of large density metal or high density rubber and the skin of fiber-resin composite are formed is up-small and down-big structure; The bottom surface of described balancing weight, as the bonded joints bonding with blade shell, because balancing weight bottom area is comparatively large, increases the bond area with blade shell, further increases the adhesive bond performance of balancing weight and blade shell; Adopt balancing weight of the present invention can bond to the relevant position of blade shell fast, after treat adhesive solidification, play balancing blade effect; This balancing process is easy, the time is short, in environment poor blade interior operating time within 30 minutes, greatly reduces labor intensity.
Accompanying drawing explanation
Fig. 1 is the bonding schematic diagram of balancing weight in traditional balancing process.
Fig. 2 is that in traditional balancing process, hand sticks with paste mulching composite layer schematic diagram.
Fig. 3 is the structural representation of balancing weight of the present invention.
Fig. 4 is the another kind of structural representation of balancing weight of the present invention.
Fig. 5 is for adopting the bonding schematic diagram of blade balancing that described in Fig. 4, balancing weight carries out.
In figure, 1, inner core, 2, outer, 3, blade shell, 4, adhesive.
Embodiment
With specific embodiment, the present invention is illustrated by reference to the accompanying drawings:
As shown in Figure 3, a kind of wind electricity blade balancing weight, described balancing weight is prefabricated composite material balancing weight; The inside of described balancing weight is using the metal of large density or high density rubber as inner core 1, the outside of described balancing weight adopts fiber-resin composite, and fiber-resin composite forms the skin 2 as exterior cover sheets and adhesive layer in the mode of vacuum infusion molding or hand pasting forming; Using the metal of large density or high density rubber as inner core 1, in order to the weight making the weight of balancing weight reach balancing weight needed for blade shell; Using fiber-resin composite as exterior cover sheets, inner core can be avoided to be corroded in the environment, play a protective role; Using fiber-resin composite as adhesive layer, make balancing weight can well carry out bonding with blade shell, there is good associativity, make the bonding more firm of balancing weight and blade shell; The balancing weight that inner core 1 and the skin 2 of fiber-resin composite of large density metal or high density rubber are formed is up-small and down-big structure; In this embodiment, the cross section of described balancing weight is trapezoidal; As shown in Figure 4, the cross section of described balancing weight can also be Pear Shaped or triangle; The weight of size balancing weight needed for blade shell of described balancing weight determines; The bottom surface of described balancing weight, as the bonded joints bonding with blade shell 3, because balancing weight bottom area is comparatively large, increases the bond area with blade shell 3, is convenient to the rapid link of balancing weight; Time bonding, need the position of counterweight to carry out the coarse process of surface finish outer field for described balancing weight bottom surface and blade shell 3, and clean out; Then take a certain amount of adhesive 4, spread upon the binding site of balancing weight, blade shell 3; Finally balancing weight is bonded in blade shell inside, and treats that adhesive 4 solidifies.
Described large density metal is iron, copper, lead.
Described high density rubber is one or more in polyethylene rubber, isoprene rubber, butyl rubber, nitrile butadiene rubber, ethylene propylene rubber, urethane rubber, polystyrene rubber, neoprene.
Described fiber-resin composite is one or more in glass fiber reinforcement unsaturated resin composite material, glass fiber reinforced polyester resin composite material, glass fiber reinforced polyester ammonia ester resin composite materials, glass fiber reinforced epoxy resin composite material.
Described adhesive 4 can select epoxy adhesive or polyurethane adhesive or acrylate adhesive.
As shown in Figure 5, utilize above-mentioned balancing weight to carry out the method for balancing, its step is as follows:
1), first inner core 1 is processed into the rectangular of up-small and down-big shape, the weight of length balancing weight needed for blade shell of balancing weight determines;
2), in inner core 1 outer wrap by fiber-resin composite, and outer 4 are formed by the mode of vacuum infusion molding or hand pasting forming;
3), by calculating, the position that blade needs to increase the weight of is obtained, and the weight that each position increases the weight of;
4) weight that, need increase the weight of according to blade each position selects the balancing weight of different quality;
5), by coarse for outer 2 bottom surface polishings, and process is clean, makes outer bottom surface free from dust, greasy dirt;
6), at blade shell 3 need the position of increasing the weight of to carry out the coarse process of surface finish, and clean out;
7), take a certain amount of adhesive 4, spread upon the binding site of balancing weight, blade shell;
8), by balancing weight be bonded in blade shell inside, and treat adhesive solidification;
9), same method carries out increasing the weight of of other position of blade, completes the balancing of blade successively.
Claims (6)
1. a wind electricity blade balancing weight, is characterized in that: described balancing weight is prefabricated composite material balancing weight; The inside of described balancing weight is using the metal of large density or high density rubber as inner core (1), the outside of described balancing weight adopts fiber-resin composite, and fiber-resin composite forms the skin (2) as exterior cover sheets and adhesive layer in the mode of vacuum infusion molding or hand pasting forming; Using the metal of large density or high density rubber as inner core (1), in order to the weight making the weight of balancing weight reach counterweight needed for blade shell; Using fiber-resin composite as exterior cover sheets, inner core can be avoided to be corroded in the environment, play a protective role; Using fiber-resin composite as adhesive layer, with blade shell, there is good adhesive bond, make the bonding more firm of balancing weight and blade shell; The balancing weight that the inner core (1) of large density metal or high density rubber and the skin (2) of fiber-resin composite are formed is up-small and down-big structure; The bottom surface of described balancing weight, as the bonded joints bonding with blade shell, increases the bond area with blade shell, improves the adhesive bond performance of balancing weight and blade shell further; Time bonding, need the position of increasing the weight of to carry out the coarse process of surface finish outer field for described balancing weight bottom surface and blade shell, and clean out; Then take a certain amount of adhesive (4), spread upon the binding site of balancing weight, blade shell; Finally balancing weight is bonded in blade shell (3) inner.
2. a kind of wind electricity blade balancing weight according to claim 1, is characterized in that: described large density metal is iron, copper, lead.
3. a kind of wind electricity blade balancing weight according to claim 1, is characterized in that: described high density rubber is one or more in polyethylene rubber, isoprene rubber, butyl rubber, nitrile butadiene rubber, ethylene propylene rubber, urethane rubber, polystyrene rubber, neoprene.
4. a kind of wind electricity blade balancing weight according to claim 1, is characterized in that: described fiber-resin composite is one or more in glass fiber reinforcement unsaturated resin composite material, glass fiber reinforced polyester resin composite material, glass fiber reinforced polyester ammonia ester resin composite materials, glass fiber reinforced epoxy resin composite material.
5. a kind of wind electricity blade balancing weight according to claim 1, is characterized in that: the cross section of described balancing weight is trapezoidal or Pear Shaped or triangle.
6. a kind of wind electricity blade balancing weight according to claim 1, is characterized in that: described adhesive (4) is epoxy adhesive or polyurethane adhesive or acrylate adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749920.3A CN104613128B (en) | 2014-12-10 | 2014-12-10 | A kind of wind electricity blade balancing weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749920.3A CN104613128B (en) | 2014-12-10 | 2014-12-10 | A kind of wind electricity blade balancing weight |
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| CN104613128A true CN104613128A (en) | 2015-05-13 |
| CN104613128B CN104613128B (en) | 2017-03-01 |
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| CN201410749920.3A Active CN104613128B (en) | 2014-12-10 | 2014-12-10 | A kind of wind electricity blade balancing weight |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108795372A (en) * | 2018-06-13 | 2018-11-13 | 高邮市康胜机械有限公司 | A kind of epoxy resin toughened bonding discarded metal bits of dimethyl silicone rubber prepare the preparation method of high tenacity clump weight |
| CN110701004A (en) * | 2019-11-22 | 2020-01-17 | 国电联合动力技术(保定)有限公司 | Counterweight method of wind power blade root counterweight box and counterweight box |
| CN110720029A (en) * | 2017-04-12 | 2020-01-21 | 西门子歌美飒可再生能源公司 | Weighing device for a wind turbine rotor blade |
| CN114953501A (en) * | 2022-04-29 | 2022-08-30 | 国能联合动力技术(保定)有限公司 | Blade counterweight box manufacturing method and wind power blade |
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| JPH07279818A (en) * | 1994-04-01 | 1995-10-27 | Mitsubishi Heavy Ind Ltd | Windmill blade |
| TW200839092A (en) * | 2007-03-27 | 2008-10-01 | Chu-Fu Lin | An energy-saving wind-powered electric generating system using weight-balanced fan |
| EP2014869A1 (en) * | 2007-07-13 | 2009-01-14 | Rolls-Royce plc | Bladed rotor balancing |
| CN101649818A (en) * | 2009-09-17 | 2010-02-17 | 秦皇岛耀华玻璃钢股份公司 | Sound insulation and noise reduction type cabin cover of wind power generator |
| CN201891561U (en) * | 2010-12-03 | 2011-07-06 | 珠海高新区和田复合材料有限公司 | Wind power generation blade |
| CN203404024U (en) * | 2013-07-19 | 2014-01-22 | 上海艾郎风电科技发展有限公司 | Wind turbine blade |
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2014
- 2014-12-10 CN CN201410749920.3A patent/CN104613128B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07279818A (en) * | 1994-04-01 | 1995-10-27 | Mitsubishi Heavy Ind Ltd | Windmill blade |
| TW200839092A (en) * | 2007-03-27 | 2008-10-01 | Chu-Fu Lin | An energy-saving wind-powered electric generating system using weight-balanced fan |
| EP2014869A1 (en) * | 2007-07-13 | 2009-01-14 | Rolls-Royce plc | Bladed rotor balancing |
| CN101649818A (en) * | 2009-09-17 | 2010-02-17 | 秦皇岛耀华玻璃钢股份公司 | Sound insulation and noise reduction type cabin cover of wind power generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110720029A (en) * | 2017-04-12 | 2020-01-21 | 西门子歌美飒可再生能源公司 | Weighing device for a wind turbine rotor blade |
| US11333129B2 (en) | 2017-04-12 | 2022-05-17 | Siemens Gamesa Renewable Energy A/S | Weighing device for a wind turbine rotor blade |
| CN108795372A (en) * | 2018-06-13 | 2018-11-13 | 高邮市康胜机械有限公司 | A kind of epoxy resin toughened bonding discarded metal bits of dimethyl silicone rubber prepare the preparation method of high tenacity clump weight |
| CN110701004A (en) * | 2019-11-22 | 2020-01-17 | 国电联合动力技术(保定)有限公司 | Counterweight method of wind power blade root counterweight box and counterweight box |
| CN114953501A (en) * | 2022-04-29 | 2022-08-30 | 国能联合动力技术(保定)有限公司 | Blade counterweight box manufacturing method and wind power blade |
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| CN104613128B (en) | 2017-03-01 |
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