CN113334807A - External reinforcement repair-free process for wind power blade - Google Patents
External reinforcement repair-free process for wind power blade Download PDFInfo
- Publication number
- CN113334807A CN113334807A CN202110482715.5A CN202110482715A CN113334807A CN 113334807 A CN113334807 A CN 113334807A CN 202110482715 A CN202110482715 A CN 202110482715A CN 113334807 A CN113334807 A CN 113334807A
- Authority
- CN
- China
- Prior art keywords
- layer
- blade
- vacuum bag
- bag film
- reinforcing
- 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
Links
- 230000002787 reinforcement Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 46
- 239000004744 fabric Substances 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000012986 modification Methods 0.000 claims abstract description 9
- 230000004048 modification Effects 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 9
- 239000003365 glass fiber Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000003292 glue Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 7
- 238000010248 power generation Methods 0.000 abstract description 5
- 239000000499 gel Substances 0.000 description 2
- 238000009787 hand lay-up Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009755 vacuum infusion Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/78—Moulding material on one side only of the preformed part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a repair-free process for external reinforcement of a wind power blade, which comprises the following steps: laying reinforcing cloth layer by layer at the position to be reinforced of the blade; covering a flow guide medium I on the outer side of the reinforcing cloth; a glue injection pipe and a first layer of vacuum bag film are arranged on the outer side of the diversion medium I; arranging an outer reinforcing mold on the first layer of vacuum bag film; arranging a second layer of vacuum bag film on the outer reinforcing mold; vacuumizing and pouring resin into the position to be reinforced of the blade; curing and molding the resin at the position to be reinforced of the blade; the first layer of vacuum bag film, the second layer of vacuum bag film and the outer reinforcing die are removed to obtain a finished product of the outer reinforcing of the blade, and the power generation efficiency of the wind power blade can be improved; the operation of shape modification after the outer reinforcement of the blade is formed is omitted, and the material cost and the labor cost are reduced.
Description
Technical Field
The invention relates to the technical field of composite material forming processes, in particular to a repair-free process for external reinforcement of a wind power blade.
Background
The pneumatic appearance of the wind power blade is extremely important, and whether the pneumatic appearance is qualified or not directly determines the power generation efficiency of the fan, so that the control of the pneumatic appearance is very critical in the manufacturing process of the wind power blade.
The external reinforcing method of the blade in the prior art is a flow chart, and the external reinforcing forming process of the blade in the prior art mainly comprises a hand pasting process and a hand pasting bag pressing process.
The existing patent uses a vacuum infusion molding process, controls the shape of external reinforcement by a scheme of adding a flexible plate, uses a flow guide material which is a flow guide net or a continuous felt, and has rough grains on the surface of the external reinforcement after molding due to the rough grains of the material, and the rough grains need to be removed by putty modification, so that the external reinforcement is not free of modification; in addition, the scheme uses a silica gel or rubber flexible plate to control the outer reinforcing molded surface, and the blade molded surface is influenced by many factors such as dislocation, clearance and the like and is a non-standard molded surface, so that the scheme cannot ensure that the outer reinforcing molded surface of the blade is consistent with the design.
The outer reinforcement method cannot make the aerodynamic shape of the outer reinforcement area of the blade consistent with the design requirement; the type of exempting from of wind-powered electricity generation blade outer reinforcement profile is accomplished, particularly, according to the outer reinforcement method of blade of prior art, because the influence of cloth layer step, water conservancy diversion medium line and non-standard profile, can't accomplish the target of exempting from the type of repairing behind the outer reinforcement shaping, the outer reinforcement profile of blade can't accomplish unanimously with the design.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a repair-free process for external reinforcement of a wind power blade, which can improve the power generation efficiency of the wind power blade; the operation of shape modification after the outer reinforcement of the blade is formed is omitted, and the material cost and the labor cost are reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows: a wind power blade external reinforcement repair-free process comprises the following steps:
step one, paving reinforcing cloth layer by layer at the position to be reinforced of the blade;
covering a flow guide medium I on the outer side of the reinforcing cloth;
thirdly, arranging a glue injection pipe and a first layer of vacuum bag film on the outer side of the diversion medium I;
arranging an external reinforcing mold on the first layer of vacuum bag film;
step five, arranging a second layer of vacuum bag film on the outer reinforcing mold;
step six, vacuumizing the mold and the position of the blade to be reinforced, and pouring resin into the position of the blade to be reinforced after vacuumizing;
step seven, curing and molding the resin at the position to be reinforced of the blade;
and step eight, removing the first layer of vacuum bag film, the second layer of vacuum bag film and the outer reinforcing mold to obtain a finished product of the outer reinforcement of the blade.
The manufacturing process of the external reinforcing die comprises the following steps: the method comprises the following steps:
selecting a die with a standard pneumatic shape of a blade outer reinforcement area;
secondly, laying glass fiber cloth at the reinforcing position of the mold;
thirdly, distributing a flow guide medium II on the outer side of the glass fiber cloth;
fourthly, distributing a vacuum bag film I on the outer side of the diversion medium II;
step five, vacuumizing and pouring resin into the reinforcing position of the die after vacuumizing;
sixthly, curing and molding the resin;
seventhly, removing the vacuum bag film I to obtain an outer reinforcing mold;
and step eight, coating the surface gel coat of the obtained external reinforcing mold, and performing surface modification.
Furthermore, the diversion medium I and the diversion medium II are diversion cloth.
Furthermore, the number of layers of the first layer of vacuum bag film, the second layer of vacuum bag film and the vacuum bag film I is 1-2.
The invention has the following beneficial effects: by adopting the process, the pneumatic appearance of the outer reinforcing area of the wind power blade can be ensured to meet the design requirement, and the power generation efficiency of the wind power blade is improved; the operation of shape modification after the outer reinforcement of the blade is formed is omitted, and the material cost and the labor cost are reduced.
Drawings
FIG. 1 is a flow chart of a prior art method of forming a blade outer reinforcement hand lay-up;
FIG. 2 is a flow chart of a prior art method for forming a reinforcing hand lay-up pocket for a blade;
FIG. 3 is a process flow diagram of the blade outer reinforcement of the present invention;
FIG. 4 is a schematic structural view of a ply for external reinforcement of a blade according to the present invention;
FIG. 5 is a flow chart of the manufacturing process of the mold for external reinforcement of the blade according to the present invention;
the labels in the figure are: 1. the blade 2, injecting glue pipe, 3, reinforcement cloth, 4, water conservancy diversion medium I, 5, first layer vacuum bag membrane, 6, outer reinforcement mould, 7, second floor vacuum bag membrane.
Detailed Description
The embodiments of the present invention are described in detail with reference to the accompanying drawings, and the embodiments and specific operations of the embodiments are provided on the premise of the technical solution of the present invention, but the scope of the present invention is not limited to the following embodiments.
According to the attached drawings, the repair-free process for the external reinforcement of the wind power blade comprises the following steps:
step one, paving reinforcing cloth 3 (C1) layer by layer at the position to be reinforced of the blade 1;
step two, covering a guide medium I4 (C2) on the outer side of the reinforcing cloth 3;
thirdly, arranging a glue injection pipe 2 and a first layer of vacuum bag film 5 (C3) on the outer side of the diversion medium I4; the first layer of vacuum bag film 5 completely covers the reinforcing cloth 3, and the first layer of vacuum bag film 5 enables a gap between the position to be reinforced of the blade 1 and the first layer of vacuum bag film 5 to form a closed space; one end of the glue injection pipe 2 is communicated with a device filled with glue injection materials, one end of the glue injection pipe 2 injects resin for glue injection onto the diversion medium I4, and the diversion medium I4 diverts the resin onto the whole reinforcing cloth 3; the diversion medium I4 is diversion cloth
Step four, arranging an outer reinforcing mold 6 on the first layer of vacuum bag film 5 (C4);
step five, arranging a second layer of vacuum bag film 7 on the outer reinforcing mold 6 (C5); the second layer of vacuum bag film 7 enables a gap between the position to be reinforced of the blade 1 and the second layer of vacuum bag film 7 to form a closed space for preparing for subsequent vacuum glue injection;
sixthly, vacuumizing the external reinforcing mold 6 and the position to be reinforced of the blade 1, and pouring resin (C6) into the position to be reinforced of the blade 1 after vacuumizing;
seventhly, curing and molding the resin at the position to be reinforced of the blade 1 (C7);
and step eight, removing the first layer of vacuum bag film 5, the second layer of vacuum bag film 7 and the outer reinforcing mold 6 to obtain a finished product of the outer reinforcement of the blade (C8).
The manufacturing process of the external reinforcing die 6 comprises the following steps: the method comprises the following steps:
step one, selecting a mould (D1) with a standard aerodynamic shape of a blade outer reinforcement area;
secondly, laying glass fiber cloth (D2) at the reinforcing position of the mould;
thirdly, distributing a flow guide medium II (D3) on the outer side of the glass fiber cloth; the diversion medium II is diversion cloth;
fourthly, distributing a vacuum bag film I (D4) on the outer side of the diversion medium II;
step five, vacuumizing and pouring resin (D5) into the reinforcing position of the mould after vacuumizing;
sixthly, curing and molding the resin (D6);
seventhly, removing the vacuum bag film I to obtain an outer reinforcing mold 6 (D7);
and step eight, coating the surface gel coat of the obtained outer reinforcing mold 6, and performing surface modification (D8).
The number of layers of the first layer of vacuum bag film 5, the second layer of vacuum bag film 7 and the vacuum bag film I is 1-2.
The invention can ensure that the pneumatic appearance of the outer reinforcing area of the wind power blade meets the design requirement and improve the power generation efficiency of the wind power blade; the operation of shape modification after the outer reinforcement of the blade is formed is omitted, and the material cost and the labor cost are reduced.
It is further noted that relational terms such as i, ii, and iii may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (4)
1. A wind power blade external reinforcement repair-free process is characterized in that: the method comprises the following steps:
step one, laying a reinforcing cloth layer on a position to be reinforced of the blade layer by layer;
covering a flow guide medium I on the outer side of the reinforcing cloth;
thirdly, distributing an adhesive injection pipeline and a first layer of vacuum bag film on the outer side of the diversion medium I;
arranging an external reinforcing mold on the first layer of vacuum bag film;
step five, arranging a second layer of vacuum bag film on the outer reinforcing mold;
step six, vacuumizing the mold and the position of the blade to be reinforced, and pouring resin into the position of the blade to be reinforced after vacuumizing;
step seven, curing and molding the resin at the position to be reinforced of the blade;
and step eight, removing the first layer of vacuum bag film, the second layer of vacuum bag film and the outer reinforcing mold to obtain a finished product of the outer reinforcement of the blade.
2. The wind power blade external reinforcement repair-free process according to claim 1, characterized in that: the manufacturing process of the external reinforcing die comprises the following steps: the method comprises the following steps:
selecting a die with a standard pneumatic shape of a blade outer reinforcement area;
secondly, laying glass fiber cloth at the reinforcing position of the mold;
thirdly, distributing a flow guide medium II on the outer side of the glass fiber cloth;
fourthly, distributing a vacuum bag film I on the outer side of the diversion medium II;
step five, vacuumizing and pouring resin into the reinforcing position of the die after vacuumizing;
sixthly, curing and molding the resin;
seventhly, removing the vacuum bag film I to obtain an outer reinforcing mold;
and step eight, coating the surface gel coat of the obtained external reinforcing mold, and performing surface modification.
3. The wind power blade external reinforcement repair-free process according to claim 2, characterized in that: the diversion medium I and the diversion medium II are diversion cloth.
4. The wind power blade external reinforcement repair-free process according to claim 2, characterized in that: the number of layers of the first layer of vacuum bag film, the second layer of vacuum bag film and the layer of the vacuum bag film I are all 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110482715.5A CN113334807A (en) | 2021-04-30 | 2021-04-30 | External reinforcement repair-free process for wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110482715.5A CN113334807A (en) | 2021-04-30 | 2021-04-30 | External reinforcement repair-free process for wind power blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113334807A true CN113334807A (en) | 2021-09-03 |
Family
ID=77469320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110482715.5A Pending CN113334807A (en) | 2021-04-30 | 2021-04-30 | External reinforcement repair-free process for wind power blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113334807A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201771690U (en) * | 2010-07-07 | 2011-03-23 | 山东长星风电科技有限公司 | Sand wind-resisting blade for wind generating set |
| CN202079787U (en) * | 2011-04-29 | 2011-12-21 | 昆山华风风电科技有限公司 | Internal binding reinforcement die used in internal binding die reinforcement technique for fan blades |
| JP2013170543A (en) * | 2012-02-22 | 2013-09-02 | Toshiba Corp | Repairing method for turbine blade, and turbine blade |
| CN107718607A (en) * | 2017-11-09 | 2018-02-23 | 国电联合动力技术(连云港)有限公司 | A kind of fan blade blade tip restorative procedure |
| CN108407339A (en) * | 2018-04-04 | 2018-08-17 | 重通成飞风电设备江苏有限公司 | A kind of wind wheel blade and its outer reinforcement pouring and molding method |
| CN109291468A (en) * | 2018-12-06 | 2019-02-01 | 国电联合动力技术有限公司 | Low wind speed wind electricity blade local strengthening method reinforces precast body and Wind turbines |
| CN109986802A (en) * | 2017-12-29 | 2019-07-09 | 北京金风科创风电设备有限公司 | Wind generating set blade internal reinforcement preparation method and wind generating set blade |
| CN110328866A (en) * | 2019-07-05 | 2019-10-15 | 国电联合动力技术(连云港)有限公司 | A kind of production method that wind turbine blade lengthening is covered with blade tip |
| CN110815854A (en) * | 2019-11-26 | 2020-02-21 | 航天海鹰(镇江)特种材料有限公司 | Manufacturing method and application of flexible tool for molding longitudinal and transverse T-shaped reinforcing rib workpieces |
| CN112677378A (en) * | 2020-12-11 | 2021-04-20 | 连云港中复连众复合材料集团有限公司 | Preparation method of prefabricated pasting angle of fan blade trailing edge and male die for preparation |
-
2021
- 2021-04-30 CN CN202110482715.5A patent/CN113334807A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201771690U (en) * | 2010-07-07 | 2011-03-23 | 山东长星风电科技有限公司 | Sand wind-resisting blade for wind generating set |
| CN202079787U (en) * | 2011-04-29 | 2011-12-21 | 昆山华风风电科技有限公司 | Internal binding reinforcement die used in internal binding die reinforcement technique for fan blades |
| JP2013170543A (en) * | 2012-02-22 | 2013-09-02 | Toshiba Corp | Repairing method for turbine blade, and turbine blade |
| CN107718607A (en) * | 2017-11-09 | 2018-02-23 | 国电联合动力技术(连云港)有限公司 | A kind of fan blade blade tip restorative procedure |
| CN109986802A (en) * | 2017-12-29 | 2019-07-09 | 北京金风科创风电设备有限公司 | Wind generating set blade internal reinforcement preparation method and wind generating set blade |
| CN108407339A (en) * | 2018-04-04 | 2018-08-17 | 重通成飞风电设备江苏有限公司 | A kind of wind wheel blade and its outer reinforcement pouring and molding method |
| CN109291468A (en) * | 2018-12-06 | 2019-02-01 | 国电联合动力技术有限公司 | Low wind speed wind electricity blade local strengthening method reinforces precast body and Wind turbines |
| CN110328866A (en) * | 2019-07-05 | 2019-10-15 | 国电联合动力技术(连云港)有限公司 | A kind of production method that wind turbine blade lengthening is covered with blade tip |
| CN110815854A (en) * | 2019-11-26 | 2020-02-21 | 航天海鹰(镇江)特种材料有限公司 | Manufacturing method and application of flexible tool for molding longitudinal and transverse T-shaped reinforcing rib workpieces |
| CN112677378A (en) * | 2020-12-11 | 2021-04-20 | 连云港中复连众复合材料集团有限公司 | Preparation method of prefabricated pasting angle of fan blade trailing edge and male die for preparation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7790082B2 (en) | Process for the production of a panel of composite material with stiffening strips and panel thus obtained | |
| CN102416700A (en) | Production technology of vane used for vertical shaft wind driven generator | |
| CN109203515B (en) | Wind power blade and manufacturing method thereof | |
| CN103042701B (en) | Integrated formation device and method for wind power blade | |
| CN109109341B (en) | Preparation method of wind power blade | |
| CN103963319A (en) | Prepreg/resin film infiltration co-curing forming method for composite stiffened wallboards | |
| CN105346100B (en) | A kind of preparation method of the big beam mould of wind electricity blade | |
| CN107696524A (en) | Glass fibre reinforced plastic nacelle cover production technology | |
| CN104441693A (en) | Molding process method for novel composite material adhesive film of wind power generation blades | |
| CN110524919A (en) | A method of bonding repairing being carried out to technique for aircraft composite component using separate type double vacuum bag hot press forming technologies | |
| CN110861318A (en) | Carbon fiber automobile front floor compression molding method | |
| CN110774623A (en) | Manufacturing method of simple-modeling carbon fiber composite part of hydrogen energy automobile | |
| CN112060633A (en) | Method for integrally manufacturing trailing edge web and third web of blade | |
| CN109203516B (en) | Manufacturing method of wind power blade | |
| CN105140326B (en) | A kind of structural member with photovoltaic module and preparation method thereof | |
| CN113334807A (en) | External reinforcement repair-free process for wind power blade | |
| CN110774615B (en) | Construction method for vacuum plastic-suction forming of glass fiber reinforced plastic theme prop | |
| CN112677378A (en) | Preparation method of prefabricated pasting angle of fan blade trailing edge and male die for preparation | |
| CN115027076A (en) | Manufacturing method of wind power blade bonding angle die | |
| CN211031288U (en) | Die assembly gap adjusting structure for direct bonding area of rear edge of wind power blade | |
| CN113942252A (en) | Method for integrally pouring and molding bonding flange die and blade skin | |
| CN211616673U (en) | Wind-powered electricity generation blade counter weight storehouse mounting structure | |
| CN210011372U (en) | Epoxy heating glass steel mould | |
| CN101234531A (en) | Bamboo composite material wind-driven generator blade root preformation indoctrination technique | |
| CN209633810U (en) | A kind of composite material mould |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210903 |
|
| RJ01 | Rejection of invention patent application after publication |