CN110701004A - Counterweight method of wind power blade root counterweight box and counterweight box - Google Patents
Counterweight method of wind power blade root counterweight box and counterweight box Download PDFInfo
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- CN110701004A CN110701004A CN201911157064.1A CN201911157064A CN110701004A CN 110701004 A CN110701004 A CN 110701004A CN 201911157064 A CN201911157064 A CN 201911157064A CN 110701004 A CN110701004 A CN 110701004A
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- counterweight
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- blade
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Classifications
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- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- 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
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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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
- 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
- F05B2230/00—Manufacture
- F05B2230/60—Assembly methods
-
- 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)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a counterweight method of a counterweight box at the root part of a wind power blade, which comprises the following steps: respectively measuring the volume of the required counterweight according to the density of the required counterweight and the weights of the multiple counterweights; correspondingly designing the size of the cavity of the counterweight box according to the measured volume of the counterweight; forming prefabricated counterweight boxes with various specifications according to different counterweight weights singly or in combination; measuring the position of the balance weight on the inner cavity of the blade, and marking the placing position of the balance weight box 1; fixing the weight box at the marking area; and fixing the periphery of the prefabricated counterweight box to complete the counterweight process of the blade. The invention also discloses a counterweight box of the counterweight box at the root part of the wind power blade, which comprises: the counterweight box sealing cover and the counterweight box cavity are both made of hand-pasted glass fiber reinforced plastic, the thickness of the formed counterweight box is 4-5 mm, and demoulding cloth for protection is arranged on the inner surface and the outer surface of the counterweight box; and the counterweight is filled in the cavity of the counterweight box. The invention has simple design and convenient installation, and reduces the hand pasting operation.
Description
Technical Field
The invention relates to the field of wind power blade structures, in particular to a balancing method and a balancing box for a balancing box at the root part of a wind power blade.
Background
In order to ensure the moment balance when the unit operates, the geometric shape, the size, the weight, the gravity center and other parameters of each blade are consistent. However, under the existing production process conditions, due to the influence of the resin dosage, the material density, the manual operation and other factors, the weight and the static moment of the wind power blade are balanced at the initial stage, and the blade with smaller static moment needs to be weighted.
In the prior art, the counterweight of the wind power blade is divided into a tip counterweight box counterweight and a root counterweight. The wind power blade root counterweight needs to be firstly prepared, processed and stacked, and then hand-pasted and fixed by using glass fiber cloth. This mode of operation has the following disadvantages: if the counterweight is metal, the interface bonding property with the blade is poor, and the falling-off condition is easy to occur; if the counterweight is a mixture of lead particles, hand-pasted resin, a thickening agent and the like, the weight needs to be accumulated for many times, the error is large, and the counterweight effect is influenced; meanwhile, a large amount of hand pasting operations are directly carried out in the blade cavity, the blades are easily polluted, the appearance is affected, the hand pasting adaptability is poor, and the defects of layering, bubbles and the like are easily generated.
Disclosure of Invention
The invention aims to provide a balancing method of a wind power blade root balancing weight box and the balancing weight box, which are simple in design, convenient and fast to install and capable of reducing manual operation by prefabricating the balancing weight box.
In order to achieve the purpose, the specific technical scheme of the counterweight method and the counterweight box for the wind power blade root counterweight box provided by the invention is as follows:
a counterweight method of a counterweight box at the root part of a wind power blade comprises the following steps: respectively measuring the volume of the required counterweight according to the density of the required counterweight and the weights of the multiple counterweights; correspondingly designing the size of the cavity of the counterweight box according to the measured volume of the counterweight; forming prefabricated counterweight boxes with various specifications according to different counterweight weights singly or in combination; measuring the position of the balance weight on the inner cavity of the blade, and marking the placing position of the prefabricated balance weight box; fixing the prefabricated weight box 1 in the marking area; and fixing the periphery of the prefabricated counterweight box to complete the counterweight process of the blade.
Further, when the volume is measured based on the weights of the plurality of weights, the volumes required for the weights of 1kg, 2kg, 3kg, 4kg, 5kg, 10kg, 15kg, 20kg, and 25kg are measured, respectively.
Further, when the size of the cavity of the counterweight box is designed, the weight of the cavity of the counterweight box and the weight of the sealing cover of the counterweight box are removed, and a deviation of-0.5 kg-0 kg is left.
Further, the height of the weight box is less than or equal to 100 mm.
Further, the counterweight position of the counterweight box in front of the starting point of the web plate is that the counterweight box is placed right above the blade girder.
Furthermore, the counterweight position of the counterweight box on the side surface of the web plate is that the counterweight box is tightly attached to the blade girder and the blade web plate.
Furthermore, a proper amount of mold closing glue is coated on the marking area of the counterweight box, so that the prefabricated counterweight box is fixed on the marking area through adhesion.
Further, the periphery of the weight box is fixed by hand pasting through the periphery reinforcing layer, and the periphery of the weight box exceeds the weight box by 200mm in all directions.
A counterweight box of wind power blade root counterweight box comprises: the counterweight box sealing cover and the counterweight box cavity are both made of hand-pasted glass fiber reinforced plastic, the thickness of the formed counterweight box is 4-5 mm, and demoulding cloth for protection is arranged on the inner surface and the outer surface of the counterweight box; and the counterweight is filled in the cavity of the counterweight box.
The counterweight method of the counterweight box at the root part of the wind power blade and the counterweight box have the advantages that:
1) the design is simple, the installation is convenient, the stability is high, and the falling is not easy;
2) the weighing times are reduced, the counterweight error is small, and the counterweight effect is good;
3) the production method has the advantages that the batch production can be realized, the production efficiency is improved, and the labor cost and the material waste are reduced;
4) the counterweight boxes with various specifications and models are arranged, and free matching in 30kg can be realized by using 1-2 counterweight boxes;
5) the prefabricated counterweight box reduces the manual pasting operation, and makes the inner cavity of the root part of the blade beautiful and tidy.
Drawings
FIG. 1 is a schematic structural diagram of a counterweight for a wind turbine blade in front of a starting point of a web;
FIG. 2 is a schematic structural diagram of a counterweight for a wind turbine blade web side in accordance with the present invention.
In the figure: 1. a weight box; 11. a counterweight box cover; 12. a counterweight box cavity; 13. a counterweight; 2. die assembling glue; 3. a peripheral reinforcing layer; 4. a blade girder; 5. a blade web.
Detailed Description
In order to better understand the purpose, structure and function of the invention, the counterweight method and counterweight box of the counterweight box at the root of the wind turbine blade of the invention are further described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 2, which illustrate a balancing method of a wind turbine blade root counterweight box according to the present invention, counterweight boxes of various specifications and models can be arranged to achieve free matching within 30kg, and hand lay-up operation is reduced by prefabricating the counterweight boxes, and the balancing method includes the following steps:
firstly, the volume of the required counterweight is respectively calculated according to the density of the required counterweight and the weights of the plurality of counterweights.
Specifically, since the maximum weight of a single point in the blade cavity is 30kg, the volumes required by different and multiple counterweight weights, for example, the volumes required by 1kg, 2kg, 3kg, 4kg, 5kg, 10kg, 15kg, 20kg and 25kg, are measured according to the density of the counterweight 13 used, and it should be noted that the invention discloses 9 weights, but is not limited to the above masses.
Further, according to the calculated volume of the counterweight 13, the size of the counterweight box cavity 12 is correspondingly designed.
Specifically, the invention also discloses a counterweight box of the wind power blade root counterweight box, the counterweight box comprises a counterweight box sealing cover 11, a counterweight 13 and a counterweight box cavity 12 formed between the counterweight box sealing cover 11 and the counterweight 13, the counterweight box cavity 12 and the counterweight box sealing cover 11 are both made of hand-pasted glass fiber reinforced plastic, the thickness of the formed counterweight box cavity is 4-5 mm, demoulding cloth for protection is arranged on the inner surface and the outer surface of the counterweight box cavity, and the demoulding cloth is removed before use to form a rough bonding surface. The counterweight 13 is filled in the counterweight box cavity 12 and is mixed by lead particles, hand-pasted resin, thickening agent and the like, or is made of metal objects such as iron blocks, lead blocks or copper blocks and the like. As shown in fig. 1 and 2, taking a mixture of lead particles, hand-pasted resin, and a thickener as an example, the shape of the weight box 1 appears as an arc; if a metal such as an iron block, a lead block, or a copper block is used, the outer shape of the weight box 1 is not limited to the illustrated one.
In addition, when the size of the counterweight box cavity 12 is designed, the weight of the counterweight box cavity 12 and the counterweight box sealing cover 11 needs to be removed, and a deviation of-0.5 kg-0 kg is left for compensating the weight of the mold closing glue 2 and the peripheral reinforcing layer 3; wherein, in order to guarantee the bonding effect, the height of the counterweight box 1 needs to be less than or equal to 100 mm.
Further, prefabricated weight boxes of various specifications are formed according to different weight weights singly or in combination.
Specifically, through experimental adjustment, a plurality of prefabricated counterweight boxes 1 can be finally formed, the invention can form 9 types of counterweight boxes according to different counterweight weights, and the counterweight weights can be completed by matching and combining two counterweight boxes 1.
Further, the counterweight position is measured out on the inner cavity of the blade, and the placing position of the prefabricated counterweight box 1 is marked.
Specifically, in the first embodiment shown in fig. 1, the weight box 1 is prefabricated in the weight position before the starting point of the web, and the weight box 1 is placed right above the blade girder 4; in the second embodiment shown in fig. 2, the prefabricated weight box 1 has the weight position on the web side where the weight box 1 abuts against the blade girder 4 and the blade web 5.
Further, the prefabricated weight cartridge 1 is fixed to the marking area.
Specifically, a proper amount of mold clamping glue 2 is coated on a marking area of the weight box, and the prefabricated weight box 1 is fixed on the marking area through adhesion. In the second embodiment shown in fig. 2, the counterweight box 1 and the blade web 5 are transited and bonded by the mold compound 2.
And finally, fixing the periphery of the counterweight box to complete the counterweight process of the blade.
Specifically, the blade balancing process is completed by hand-pasting and fixing the periphery of the weight box 1 using the periphery reinforcing layer 3 and extending 200mm in each direction beyond the weight box.
The counterweight method of the counterweight box at the root part of the wind power blade and the counterweight box are simple in design, convenient and fast to install, high in stability and not easy to fall off; the weighing times are reduced, the counterweight error is small, and the counterweight effect is good; the production method has the advantages that the batch production can be realized, the production efficiency is improved, and the labor cost and the material waste are reduced; the counterweight boxes with various specifications and models are arranged, and free matching in 30kg can be realized by using 1-2 counterweight boxes; the prefabricated counterweight box reduces the manual pasting operation, and makes the inner cavity of the root part of the blade beautiful and tidy.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (9)
1. A counterweight method of a counterweight box at the root part of a wind power blade is characterized by comprising the following steps:
respectively measuring the volume of the required counterweight according to the density of the required counterweight and the weights of the multiple counterweights;
correspondingly designing the size of the cavity of the counterweight box according to the measured volume of the counterweight;
forming prefabricated counterweight boxes with various specifications according to different counterweight weights singly or in combination;
measuring the position of the balance weight on the inner cavity of the blade, and marking the placing position of the prefabricated balance weight box 1;
fixing a prefabricated weight box at the marking area;
and fixing the periphery of the prefabricated counterweight box to complete the counterweight process of the blade.
2. The method for balancing weight of wind turbine blade root counterweight box according to claim 1, wherein when the volume is calculated according to the weights of multiple counterweights, the required volume of counterweight weights of 1kg, 2kg, 3kg, 4kg, 5kg, 10kg, 15kg, 20kg and 25kg is calculated respectively.
3. The method of claim 1, wherein the weight of the weight cartridge cavity and the weight cartridge cover are removed while sizing the weight cartridge cavity with a deviation of-0.5 kg to 0 kg.
4. The weighting method according to claim 1 or 3, wherein the height of the weight cartridge is 100mm or less.
5. A balancing method according to claim 1, characterized in that the balancing position of the balancing weight box (1) before the starting point of the web is that the balancing weight box (1) is placed directly above the blade girder (4).
6. A balancing method according to claim 1, characterized in that the balancing position of the balancing weight box (1) at the web side is where the balancing weight box (1) abuts against the blade girder (4) and the blade web (5).
7. A method according to claim 1, characterized in that the prefabricated weight box (1) is fixed on the marking area by gluing by applying a suitable amount of clamping glue (2) on the marking area of the weight box.
8. A weight counterbalance method according to claim 1, characterized in that the periphery of the weight box (1) is hand-pasted by the periphery reinforcing layer (3) and is beyond the weight box by 200mm in each direction.
9. The utility model provides a counter weight box of wind-powered electricity generation blade root counter weight box which characterized in that: the method comprises the following steps:
the counterweight box sealing cover (11) and the counterweight box cavity (12) are both made of hand-pasted glass fiber reinforced plastic, the thickness of the formed counterweight box is 4-5 mm, and demoulding cloth for protection is arranged on the inner surface and the outer surface of the counterweight box; and
and the counterweight (13) is filled in the counterweight box cavity (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157064.1A CN110701004A (en) | 2019-11-22 | 2019-11-22 | Counterweight method of wind power blade root counterweight box and counterweight box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157064.1A CN110701004A (en) | 2019-11-22 | 2019-11-22 | Counterweight method of wind power blade root counterweight box and counterweight box |
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| Publication Number | Publication Date |
|---|---|
| CN110701004A true CN110701004A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911157064.1A Pending CN110701004A (en) | 2019-11-22 | 2019-11-22 | Counterweight method of wind power blade root counterweight box and counterweight box |
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| CN (1) | CN110701004A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187675A (en) * | 2021-05-08 | 2021-07-30 | 天津龙嘉科技有限公司 | Method for adjusting dynamic balance of fan blade |
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| JP2004285939A (en) * | 2003-03-24 | 2004-10-14 | Matsushita Electric Ind Co Ltd | Blower fan |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187675A (en) * | 2021-05-08 | 2021-07-30 | 天津龙嘉科技有限公司 | Method for adjusting dynamic balance of fan blade |
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