CN109732940B - Connecting method of composite material shell of segmented wind power blade mould - Google Patents
Connecting method of composite material shell of segmented wind power blade mould Download PDFInfo
- Publication number
- CN109732940B CN109732940B CN201811563273.1A CN201811563273A CN109732940B CN 109732940 B CN109732940 B CN 109732940B CN 201811563273 A CN201811563273 A CN 201811563273A CN 109732940 B CN109732940 B CN 109732940B
- Authority
- CN
- China
- Prior art keywords
- female die
- segmented
- female
- die
- plate
- 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.)
- Active
Links
Images
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Wind Motors (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a connecting method of a composite material shell for a segmented wind power blade mould, which comprises the following steps: the method has the advantages that the method has no need of performing additional injection or hand pasting operation on the composite material shell in the connecting and mounting process of the die, greatly shortens the operation time, can simultaneously keep the original die profile, and reduces the post-processing time.
Description
Technical Field
The invention relates to the field of wind turbine blade molds, in particular to a connecting method for a composite material shell of a segmented wind turbine blade mold.
Background
Wind energy is increasingly gaining attention as a clean renewable energy source in all countries of the world. The energy storage capacity is huge, the global wind energy is about 2.74 multiplied by 109MW, and the available wind energy is 2 multiplied by 107MW which is 10 times larger than the total amount of water energy which can be developed and utilized on the earth. Wind is utilized by people for a long time, mainly water pumping, surface grinding and the like are realized through windmills, people are interested in how to utilize wind to generate electricity at present, and the principle of wind power generation is that wind power is utilized to drive blades of the windmills to rotate, and then the rotating speed is increased through a speed increaser to promote a generator to generate electricity. According to the current wind power generation technology, the power generation can be started at a breeze speed of about three meters per second. Wind power generation is forming a hot tide in the world because it has no fuel problems and does not produce radiation or air pollution.
With the rapid development of clean energy in China, the wind power industry is rapidly developed, the megawatt level of the wind power blade is larger and larger, the length of the wind power blade is from forty meters originally to eighty meters now, and as the length of the wind power blade is gradually lengthened, the length of a die is lengthened; in order to facilitate the manufacture, transportation and installation of the mold, the mold is generally required to be manufactured and transported in a plurality of sections, and the segmentation of the mold, including the segmentation of the steel structure and the composite material shell, is increasingly common. When a traditional composite material shell subsection is installed in a mold, one or more process methods such as bonding, hand pasting and vacuum injection are generally used for manufacturing the composite material shell subsection, in order to achieve the profile precision of the shell, the composite material shell at the joint needs to be repeatedly polished for multiple times and other subsequent processing treatments, the operation is complex, the consumed time is long, and the quality is difficult to guarantee.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the defects of the prior art, the invention provides a method for connecting a composite material shell of a segmented wind power blade mould, so that the composite material shell does not need to be additionally injected or manually pasted in the process of connecting and installing the mould, the operation time is greatly shortened, the original mould profile can be kept, and the post-processing time is reduced.
The technical scheme is as follows: in order to achieve the above object, the present invention provides a method for connecting a composite shell of a segmented wind turbine blade mold, comprising the following steps:
the method comprises the following steps: laying a layer of prefabricated plate fiber fabric on the male die;
step two: the upper surface of the prefabricated plate fiber fabric is covered with a separation film layer;
step three: laying female die fiber fabric above the release film layer;
step four: respectively injecting resin into the prefabricated plate fiber fabric and the female die fiber fabric to obtain an integrally formed prefabricated plate and a female die;
step five: after the prefabricated plate and the female die are manufactured, fixing a steel frame connected with the female die by using a stroke limiter, separating the prefabricated plate from the female die and the male die, and removing a separation film layer coated on the prefabricated plate;
step six: the method comprises the following steps that a female die is processed in a segmented mode before the female die is required to be transported, then when the segmented female die is required to be installed and connected, a bonding material layer is uniformly coated on the surface of the segmented female die, and a prefabricated plate is placed above the bonding material layer coated on the female die;
step seven: after the bonding material layer is solidified, the size of the molded surface of the female die is corrected in a grinding and polishing mode so as to ensure that the molded surface of the die meets the requirements.
Preferably, the material of the release film layer in the second step is a release film or teflon cloth, and the thickness of the release film layer is 0.01 mm-5 mm.
As a further preferred aspect of the present invention, the thickness a of the prefabricated panel in the fourth step is more than 2mm, the length of the inclined edge b is more than or equal to 3 times of the thickness, and the length of the width c is more than or equal to 5 times of the thickness.
As a further preferred aspect of the present invention, the step of manufacturing the female mold in the fourth step is:
(a) the method comprises the following steps Vertically fixing the segmented plates above the prefabricated plates and at the pre-segmentation section of the female die;
(b) the method comprises the following steps Laying female die fiber fabrics on two sides of the segmented plate and above the prefabricated plate and the male die, and then pouring resin into the female die fiber fabrics to obtain a female die;
(c) the method comprises the following steps And pouring resin into the female die fiber fabrics positioned on the two sides of the segmented plate and above the female die to obtain the segmented connecting block.
As a further preferred embodiment of the present invention, the surface of the segmented plate is coated with a release film layer.
As a further preferred of the present invention, after the segment plate is removed from the female mold by an operator, the two segment connecting blocks on the female mold are fixed together by bolts, and the surfaces of the segment connecting blocks and the bolts are coated with a fabric to increase the reliability of the connection.
As a further preferred aspect of the present invention, the fiber fabric is a glass fiber reinforced plastic composite material, a carbon fiber composite material or an aramid fiber.
As a further preferred aspect of the present invention, the method for manufacturing the female mold in the fourth step comprises: and laying female mold fiber fabric above the prefabricated plate and the male mold, and then casting resin into the female mold fiber fabric to obtain a female mold.
As a further preferred aspect of the present invention, the segmentation process in the sixth step is to add a segmented plate at the pre-segmentation section of the female die and take out the segmented plate from the female die after the female die is manufactured, so as to realize the segmentation of the female die, or to cut off the female die and the prefabricated plate by a cutting machine, so as to realize the segmentation of the female die.
Has the advantages that: compared with the prior art, the connecting method of the composite material shell for the segmented wind power blade mould has the following advantages that:
(1) the segmented precast slab is convenient to manufacture, the manufacture is carried out and completed simultaneously with the manufacture of the main body of the shell made of the composite material of the mould, and no additional working hour is increased;
(2) the size of the prefabricated plate is limited, so that the reliability of female die connection is guaranteed, the prefabricated plate material is saved on the premise of bearing the maximum acting force during female die sectional connection, and the cost is reduced;
(3) the method for installing the segmented precast slabs on the composite material shell of the mould is simple, the procedures of hand pasting, vacuum injection and the like in the traditional composite material connecting method are eliminated, and the installation process is greatly simplified;
(4) and the sectional precast slabs and the female die are manufactured simultaneously, so that the installed molded surface is basically unchanged, and the integral molded surface precision of the blade die is ensured.
Drawings
FIG. 1 is a schematic structural view of a prefabricated panel;
FIG. 2 is a schematic structural view of a completed female mold;
FIG. 3 is a schematic structural view of the prefabricated plate separated from the female die;
FIG. 4 is a schematic structural view of a sectional connecting block fixed by bolts;
FIG. 5 is a schematic view of a structure in which a female mold is cut at a pre-staging position.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
The invention relates to a connecting method of a composite material shell for a segmented wind power blade mould, which comprises the following steps: and (3) manufacturing a prefabricated plate, coating a release film layer, manufacturing a female die, separating the prefabricated plate from the female die, coating an adhesive material layer, fixing the prefabricated plate and correcting.
Example 1
The method comprises the following steps: laying a layer of prefabricated plate fiber fabric on the male die 1;
step two: as shown in fig. 1, the upper surface of the prefabricated plate fiber fabric is covered with a separation film layer 3, the separation film layer 3 is made of a separation film or teflon cloth, and the thickness of the separation film layer 3 is 0.01 mm;
step three: laying female die fiber fabric above the separation film layer 3;
step four: respectively injecting resin into the precast slab fiber fabric and the female die fiber fabric to obtain an integrally formed precast slab 2 and a female die 4, wherein the thickness a of the precast slab 2 is more than 2mm, the length of the oblique edge b is more than or equal to 3 times of the thickness, and the length of the width c is more than or equal to 5 times of the thickness, as shown in figure 2;
step five: when the female die 4 is manufactured, the segmented plate 9 is vertically fixed above the prefabricated plate 2 and at the pre-segmentation section of the female die 4, and the surface of the segmented plate 9 is coated with the separation film layer 3; then laying female mold fiber fabrics on two sides of the segmented plate 9 and above the prefabricated plate 2 and the male mold 1, and then injecting resin into the female mold fiber fabrics to obtain a female mold 4; finally, resin is poured into the female mold fabric on both sides of the segmented plate 9 and above the female mold 4 to obtain the segmented joint blocks 5, as shown in fig. 3.
Step six: after the female die 4 is manufactured, when the female die 4 needs to be segmented before the female die 4 is transported, an operator manually takes the segmented plate 9 out of the female die 4, then fixes a steel frame 41 connected with the female die 4 by using a stroke limiter, then manually applies force to the prefabricated plate 2 by the operator and separates the prefabricated plate 2 from the female die 4 and the male die 1, as shown in fig. 4, and simultaneously removes a separation film layer 3 coated on the prefabricated plate 2;
step seven: then when the segmented female die 4 needs to be installed and connected, uniformly coating an adhesive material layer 8 on the surface of the segmented female die 4, placing the prefabricated plate 2 above the adhesive material layer 8 coated on the female die 4, fixing two segmented connecting blocks 5 on the female die 4 together through bolts 6, and coating fiber fabrics on the surfaces of the segmented connecting blocks 5 and the bolts 6 so as to increase the connection reliability, as shown in fig. 5;
step eight: after the bonding material layer 8 is cured, the size of the molded surface of the female die 4 is corrected in a grinding and polishing mode so as to ensure that the molded surface of the die meets the requirements.
Example 2
The method comprises the following steps: laying a layer of prefabricated plate fiber fabric on the male die 1;
step two: the upper surface of the prefabricated plate fiber fabric is covered with a separation film layer 3, as shown in fig. 1, the separation film layer 3 is made of an isolating film or teflon cloth, and the thickness of the separation film layer 3 is 5 mm;
step three: laying female die fiber fabric above the separation film layer 3;
step four: respectively injecting resin into the precast slab fiber fabric and the female die fiber fabric to obtain an integrally formed precast slab 2 and a female die 4, wherein the thickness a of the precast slab 2 is more than 2mm, the length of the oblique edge b is more than or equal to 3 times of the thickness, and the length of the width c is more than or equal to 5 times of the thickness, as shown in figure 2;
step five: when the female die 4 is manufactured, female die fiber fabrics are paved above the precast slab 2 and the male die 1, and then the female die 4 is obtained in the manner of pouring resin in the female die fiber fabrics.
Step six: after the female die 4 is manufactured, when the female die 4 needs to be segmented before the female die 4 is transported, an operator cuts off the female die 4 and the prefabricated plate 2 by using a cutting machine to realize segmentation of the female die 4, then fixes a steel frame connected with the female die 4 by using a stroke limiter, manually applies force to the prefabricated plate 2 by the operator, separates the prefabricated plate 2 from the female die 4 and the male die 1, and simultaneously removes a separation film layer 3 coated on the prefabricated plate 2;
step seven: then when the segmented female die 4 needs to be installed and connected, adhesive material layers 8 are respectively coated on the segmented female die 4 and the segmented prefabricated plate 2, and the prefabricated plate 2 is placed above the adhesive material layers 8 coated on the female die 4, so that the connection reliability is improved, as shown in fig. 6;
step seven: after the bonding material layer 8 is cured, the size of the molded surface of the female die 4 is corrected in a grinding and polishing mode so as to ensure that the molded surface of the die meets the requirements.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. A connecting method for a composite material shell of a segmented wind power blade mould is characterized by comprising the following steps:
the method comprises the following steps: laying a layer of prefabricated plate fiber fabric on the male die (1);
step two: the upper surface of the prefabricated plate fiber fabric is covered with a separation film layer (3);
step three: laying female die fiber fabric above the release film layer (3);
step four: respectively injecting resin into the precast slab fiber fabric and the female die fiber fabric to obtain an integrally formed precast slab (2) and a female die (4);
step five: after the prefabricated plate (2) and the female die (4) are manufactured, fixing a steel frame (41) connected with the female die (4) by using a stroke limiter, separating the prefabricated plate (2), the female die (4) and the male die (1), and removing a separation film layer (3) coated on the prefabricated plate (2);
step six: the method comprises the following steps that the female die (4) is processed in a segmented mode before the female die (4) needs to be transported, then when the segmented female die (4) needs to be installed and connected, a bonding material layer (8) is uniformly coated on the surface of the segmented female die (4), and a prefabricated plate (2) is placed above the bonding material layer (8) coated on the female die (4);
step seven: after the bonding material layer (8) is cured, the size of the molded surface of the female die (4) is corrected in a grinding and polishing mode so as to ensure that the molded surface of the die meets the requirements.
2. The method of joining a composite shell for a segmented wind blade mold according to claim 1, wherein: the material of the separation film layer (3) in the second step is an isolating film or Teflon cloth, and the thickness of the separation film layer (3) is 0.01-5 mm.
3. The method of joining a composite shell for a segmented wind blade mold according to claim 1, wherein: the thickness a of the precast slab (2) in the fourth step is more than 2mm, the length of the bevel edge b is more than or equal to 3 times of the thickness, and the length of the width c is more than or equal to 5 times of the thickness.
4. The method of joining a composite shell for a segmented wind blade mold according to claim 1, wherein: the manufacturing steps of the female die in the fourth step are as follows:
(a) the method comprises the following steps Vertically fixing the segmented plate (9) above the prefabricated plate (2) and at the pre-segmentation section of the female die (4);
(b) the method comprises the following steps Laying female mold fiber fabrics on two sides of the segmented plate (9) and above the prefabricated plate (2) and the male mold (1), and then obtaining a female mold (4) in the female mold fiber fabrics in a resin pouring mode;
(c) the method comprises the following steps And resin is poured into the female die fiber fabric on two sides of the segmented plate (9) and above the female die (4) to obtain the segmented connecting block (5).
5. The method of connecting a composite shell for a segmented wind blade mold according to claim 4, wherein: the surface of the segmented plate (9) is coated with a release film layer (3).
6. The method of connecting a composite shell for a segmented wind blade mold according to claim 4, wherein: after the segmented plate (9) is taken out of the female die (4) by an operator, the two segmented connecting blocks (5) on the female die (4) are fixed together through bolts (6), and the surfaces of the segmented connecting blocks (5) and the bolts (6) are coated with fiber fabrics so as to increase the reliability of connection.
7. The method of connecting a composite shell for a segmented wind blade mould according to claim 1 or 6, wherein: the fiber fabric is a glass fiber reinforced plastic fiber composite material, a carbon fiber composite material or an aramid fiber composite material.
8. The method of joining a composite shell for a segmented wind blade mold according to claim 1, wherein: the manufacturing method of the female die in the fourth step comprises the following steps: laying female mold fiber fabric above the prefabricated plate (2) and the male mold (1), and then casting resin in the female mold fiber fabric to obtain a female mold (4).
9. The method of joining a composite shell for a segmented wind blade mold according to claim 1, wherein: and in the step six, the segmentation treatment is to add a segmentation plate (9) at the pre-segmentation section of the female die (4), take the segmentation plate (9) out of the female die (4) after the female die (4) is manufactured, so that the segmentation of the female die (4) is realized, or cut off the female die (4) and the prefabricated plate (2) through a cutting machine, so that the segmentation of the female die (4) is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563273.1A CN109732940B (en) | 2018-12-20 | 2018-12-20 | Connecting method of composite material shell of segmented wind power blade mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563273.1A CN109732940B (en) | 2018-12-20 | 2018-12-20 | Connecting method of composite material shell of segmented wind power blade mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109732940A CN109732940A (en) | 2019-05-10 |
| CN109732940B true CN109732940B (en) | 2021-04-16 |
Family
ID=66360778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811563273.1A Active CN109732940B (en) | 2018-12-20 | 2018-12-20 | Connecting method of composite material shell of segmented wind power blade mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109732940B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821583B (en) * | 2019-12-05 | 2022-06-17 | 中国航发四川燃气涡轮研究院 | Edge connecting structure of cartridge receiver barrel and cartridge receiver |
| CN112976427A (en) * | 2021-02-07 | 2021-06-18 | 苏州天顺风电叶片技术有限公司 | Segmented position butt joint method for wind power blade mold with small temperature difference after heating |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2626652T3 (en) * | 2011-12-30 | 2017-07-25 | Vestas Wind Systems A/S | Mold shell section for a mold shell for a wind turbine blade, mold shell and method that uses mold shell sections |
| CN103407034B (en) * | 2013-08-05 | 2016-05-11 | 南京甬博数控科技有限公司 | The preparation method of composite former |
| CN103568161B (en) * | 2013-10-08 | 2016-01-06 | 东方电气（天津）风电叶片工程有限公司 | The method of processing megawatt wind turbine blade mould |
| CN205615026U (en) * | 2016-04-06 | 2016-10-05 | 上海华宜风电模具有限公司 | Novel wind power blade mould high -speed joint device |
-
2018
- 2018-12-20 CN CN201811563273.1A patent/CN109732940B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109732940A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111608852B (en) | Lightweight fan blade and manufacturing method thereof | |
| CN105346100B (en) | A kind of preparation method of the big beam mould of wind electricity blade | |
| CN109732940B (en) | Connecting method of composite material shell of segmented wind power blade mould | |
| CN106378942B (en) | A kind of preparation of blade of MW class wind turbine girder spar cap and its installation method | |
| CN203022980U (en) | Trailing edge prefabricated wind driven generator blade | |
| CN107246354B (en) | Wind power blade and manufacturing method thereof | |
| CN103419380B (en) | The pre-formed technique of MW class wind turbine blade blade root | |
| CN103600498A (en) | Methods for manufacturing and assembling sectional type wind power blade | |
| CN102320142A (en) | Trailing edge adhering method during a kind of blade of MW class wind turbine matched moulds | |
| CN104175570A (en) | Method for integrally preparing blade auxiliary beam and blade shell of megawatt wind turbine | |
| CN106965456A (en) | A kind of leafy composite propeller forming method | |
| CN104552994A (en) | Z-pin reinforced composite wind turbine blade and manufacturing method thereof | |
| CN113386368A (en) | Blade forming method for preventing glass fibers on two sides of die-assembling seam of blade root of wind power blade from being layered | |
| CN103264510B (en) | Molding method of embedded bolt sleeve at root of fan blade | |
| CN109551789A (en) | A kind of preparation method that stickup angle is supported with polyurethane of blade of MW class wind turbine | |
| CN103395213A (en) | Manufacturing process of megawatt blade tail edge splicing angle | |
| CN111136939A (en) | Prefabricated tail edge beam structure of large wind turbine blade and manufacturing method | |
| CN102672978B (en) | Technique for manufacturing blade of wind-driven generator | |
| CN107559155B (en) | Wind turbine generator system blade, paving bonding method thereof and wind turbine generator system | |
| CN211230696U (en) | Integrally formed wind driven generator blade | |
| CN113002016A (en) | Suction pouring forming method for web plate of megawatt wind power generation blade | |
| CN208452344U (en) | A kind of double big beam moulds of wind electricity blade | |
| CN113942252B (en) | Method for integrally pouring and forming adhesive flange mold and blade skin | |
| CN102689447A (en) | Air guide cover integral manufacturing method | |
| CN108638535A (en) | A kind of double beam moulds greatly of wind electricity blade and the method for preparing crossbeam using the mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |