CN112959697B - Post-defect-adhesive-shortage maintenance method for nondestructive inspection girder of wind power blade - Google Patents
Post-defect-adhesive-shortage maintenance method for nondestructive inspection girder of wind power blade Download PDFInfo
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- CN112959697B CN112959697B CN202110336318.7A CN202110336318A CN112959697B CN 112959697 B CN112959697 B CN 112959697B CN 202110336318 A CN202110336318 A CN 202110336318A CN 112959697 B CN112959697 B CN 112959697B
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- Prior art keywords
- glue
- magnet
- shortage
- shell
- wind power
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Classifications
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- 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
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/02—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using liquid or paste-like material
- B29C73/025—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using liquid or paste-like material fed under pressure
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- 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
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
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- 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
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
-
- 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
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
- B29C2073/268—Apparatus or accessories not otherwise provided for for mechanical pretreatment for drilling holes in the area to be repaired
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- 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
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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
Abstract
The invention discloses a maintenance method for a wind power blade after nondestructive inspection girder, which comprises the following steps of S1, positioning outside a glue shortage point: marking the glue shortage point on the outer surface of the first shell plate by using a first magnet; s2, positioning in a glue shortage point: the second shell plate and the first shell plate are oppositely arranged, a second magnet is conveyed into a web plate where a glue shortage point is located through the second shell plate, the first magnet and the second magnet are attracted, and a glue shortage mark is made at the second magnet; s3, glue supplementing: and drilling a glue injection hole at the glue shortage mark and injecting glue. The method for repairing the wind power blade after the nondestructive inspection girder has the advantages that the shell does not need to be windowed, the shell is prevented from being damaged in a large range, operators do not need to enter the shell to use equipment, the method is simple and convenient, the maintenance efficiency is greatly improved, and the success rate of repair is improved.
Description
Technical Field
The invention relates to a method for maintaining a wind power blade after nondestructive inspection of a girder in a glue shortage way.
Background
Wind energy is a green renewable energy source, has good development prospect, and has potential to become an important component in future energy structures. Therefore, the development of wind power generation is also focused, and the fan blade is an important component of the wind turbine generator, and the wind power blade is a composite material product, which is formed by vacuum infusion by taking resin as a matrix and glass fiber cloth as a reinforcement. The shell area is also filled with some Balsa and PVC, while the seam area is bonded with an adhesive. From a macroscopic view, the wind power blade mainly comprises a shell and a web plate, wherein the bonding between the web plate and the shell plays a very important role in the structure of the blade. Once the bonding area of the wind power blade has defects, the service life of the blade can be greatly influenced, so that very strict rules are provided for bonding the wind power blade, the bonding condition of the shell and the web plate is inspected through strict nondestructive inspection at the present stage, and if the bonding condition exists, the repair maintenance is required.
Because the glue shortage area is positioned in the blade shell, operators cannot enter the shell to operate, and the general maintenance method is to cut the outside of the shell to form a window which can be conveniently operated by related personnel, and the operators stretch into the related area to carry out glue supplementing maintenance. This maintenance method has the following disadvantages:
1. after finding some point out the lacked through nondestructive test, need to open the window at this lacked point face casing, the lacked point position again can not accurate determination simultaneously and for convenient operation, the window must be a bit bigger, and the casing will cause great destruction, still need repair this window again, has both influenced blade intensity, spends a large amount of time and material to mend this window again.
2. After windowing, because the relevant adhesive shortage area of the opposite shell cannot be effectively and accurately found, operators stretch into the relevant adhesive shortage area, and the possible adhesive shortage areas are ground by using a manual grinding machine until adhesive shortage points are found, and the adhesive shortage points are difficult to find due to the fact that the grinding is the general area, so that the repairing success rate is very low.
3. After finding out the lack of glue point, carry on the manual glue-supplementing, then the fibrous cloth of the re-bag pressing will grind the area of glue-supplementing back originally. The operation that casing inner space is narrow and small, polishes, mends and glue and press again is very difficult, and the risk of maintenance failure is very high, and in the regional operation polishing equipment of such narrow and small moreover, still there is uncontrollable security risk.
Disclosure of Invention
The invention aims to overcome the defect that in the prior art, the adhesive shortage repair of a web plate and a shell is difficult, and provides a method for repairing the adhesive shortage after a girder for nondestructive inspection of a wind power blade.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the method for maintaining the wind power blade after the nondestructive inspection of the girder is characterized by comprising the following steps of:
s1, positioning outside a glue shortage point: marking the glue shortage point on the outer surface of the first shell plate by using a first magnet;
s2, positioning in a glue shortage point: the second shell plate and the first shell plate are oppositely arranged, a second magnet is conveyed into a web plate support leg where a glue shortage point is located through the second shell plate, the first magnet and the second magnet are attracted, and a glue shortage mark is made at the second magnet;
s3, glue supplementing: and drilling a glue injection hole at the glue shortage mark and injecting glue.
Preferably, in the step S2, an operation hole is formed in the second housing plate, and the second magnet is sent to the web where the glue shortage point is located through the operation hole.
Preferably, in the step S2, an illumination hole is formed in the second housing plate, and the light source is inserted into the illumination hole to illuminate the interior of the housing.
Preferably, in S2, an observation hole is formed in the second housing plate, and the interior of the housing is observed.
Preferably, in S3, a long drill is extended from the operation hole to the glue-deficient mark to drill a glue injection hole using a drilling machine equipped with the long drill.
Preferably, the glue injection holes are provided with a row, glue is injected into one of the glue injection holes until the adjacent glue injection holes come out, and the glue injection is stopped.
Preferably, after the glue injection hole is completed, a glue injection gun with a long gun barrel is used, and the long gun barrel stretches into the glue injection hole from the operation hole to perform glue injection.
Preferably, in the step S2, the second magnet is fed into the operation hole by using a magnet positioning tool, the magnet positioning tool includes a guide tube, a control wire and a control rod, the control wire is inserted into the guide tube, two ends of the control wire are exposed out of the guide tube, and the second magnet and the control rod are respectively fixed at two ends of the control wire.
Preferably, after S3 is completed, nondestructive inspection is carried out on the blade, and after the blade is qualified, the surface of the shell is repaired.
The technical scheme can obtain the following beneficial effects:
(1) The method is simple and convenient, the maintenance efficiency is greatly improved, and the success rate of repair is improved.
(2) By utilizing the attraction characteristic of the magnets, the small magnets are simultaneously used at two sides of the glue shortage point, so that the glue shortage position can be accurately found.
(3) Because the operation holes are only needed to be drilled on the second shell plate, the lighting holes and the observation holes can be drilled according to the situation without extending the hands of operators into the blades and operating equipment, the number of the drilling holes is about 3-6, the holes can be used for feeding second magnets, drilling machines, glue injection guns, lighting and observation and the like, the shell is prevented from being damaged by windowing, and only the drilling holes are needed to be repaired later, so that the maintenance efficiency is greatly improved.
(4) Because the glue shortage point is accurately found in the blade, manual glue supplementing can be omitted after polishing, a glue injection hole is formed in the glue shortage mark, and a glue injection machine extends into the glue injection hole to perform glue injection, so that the maintenance efficiency and the success rate are greatly improved.
(5) The glue injection hole is provided with a row, when glue is injected, the glue injection machine injects glue into one glue injection hole until the adjacent small holes are overflowed, the glue shortage area is proved to be filled with glue, the glue injection process is visual, the glue injection quantity is easy to grasp, and the glue supplementing is full and cannot cause waste.
(6) A special magnet positioning tool is used for feeding the second magnet from the operation hole, the guide pipe is made of hard materials, and the second magnet can be fed into the approximate area of the glue shortage point; the control wire is made of flexible materials, and under the action of the attraction of the first magnet opposite to the second magnet, the second magnet can actively approach to the direction of the first magnet to pull the control wire to the position; the control rod is connected at the control rope other end, is convenient for control second magnet, can feel the pulling of second magnet to control rope simultaneously, cooperates the second magnet, better finding the lack of glue position.
Drawings
Fig. 1 is a schematic view of the present invention when a second magnet is fed into the interior of the housing.
FIG. 2 is a schematic diagram of the present invention after the completion of the injection hole drilling.
Fig. 3 is a schematic view of an injection gun according to another embodiment of the present invention.
Fig. 4 is a schematic view of a magnet positioning tool of the present invention.
In the figure:
1. the device comprises a first shell plate, 2, a second shell plate, 3, a web plate, 4, a glue shortage point, 5, a first magnet, 6, an operation hole, 7, an observation hole, 8, an illumination hole, 9, a glue injection hole, 10, a glue injection gun, 11, a long gun tube, 12, a guide tube, 13, a control wire, 14, a second magnet, 15 and a control rod.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
Example 1
The invention discloses a method for maintaining a wind power blade after nondestructive inspection of a girder in a glue shortage way. The invention comprises the following steps:
s1, positioning outside a glue shortage point: as shown in fig. 1, after the blade passes through the nondestructive inspection, the adhesive shortage of the bonding area between a certain part of the first shell plate 1 and the web plate 3 is found, the position of the adhesive shortage point 4 is analyzed through the detection waveform of the nondestructive inspection equipment, the adhesive shortage position is easily found, the adhesive shortage position is marked on the outer surface of the first shell plate 1 by using a marker pen, and then a first magnet 5 is placed.
S2, positioning in a glue shortage point: with continued reference to fig. 1, the second casing plate 2 is a casing surface opposite to the first casing plate 1, the second magnet 14 is fed into the web 3 where the glue shortage point 4 is located through the second casing plate 2, the first magnet 5 and the second magnet 14 attract each other, and a glue shortage mark is made at the second magnet 14; in the step, the second magnet 14 is fed from the other surface of the glue shortage point 4, and according to the principle of attraction of the magnets, the second magnet 14 can quickly realize accurate positioning of two sides of the glue shortage point 4 through attraction with the first magnet 5.
Before conveying the second magnet 14 into the shell, firstly, a row of larger holes, 3-6 in number, are drilled on the second shell plate 2 at one time, wherein the diameters and the intervals of the holes are consistent, the holes comprise operation holes 6, and secondly, the second magnet 14 is conveyed into the web plate 3 where the glue shortage points 4 are located through the operation holes 6, so that the glue shortage points 4 are conveniently located. In addition, the hole comprises an illumination hole 8, a light source is inserted into the illumination hole 8 to illuminate the inside of the shell, so that the second magnet 14 is conveniently fed into the shell and the subsequent glue injection operation is convenient, and in the embodiment, the light source is a small flashlight; in addition, the above holes include the observation holes 7, and other holes except the illumination holes 8 and the operation holes 6 can be used as the observation holes 7 to observe the internal condition of the shell, thereby further facilitating the operation.
In the whole maintenance process, only need stretch into copper pipe, drill bit (see follow-up step) and magnet to the casing inside, consequently can not need open a big window at the casing, only need bore a row of great hole, these holes can be used for stretching into the drill bit, copper pipe, little flashlight or as observing hole etc. avoid opening the window and destroy the casing, follow-up only need repair these apertures, promote maintenance efficiency greatly.
S3, glue supplementing: because the glue shortage point is found accurately, manual glue filling can be performed without polishing, firstly, as shown in fig. 2, a drilling machine provided with a long drill bit is used, the long drill bit is extended from an operation hole to a glue shortage mark to drill a row of glue injection holes 9, then a glue injection gun with a long gun barrel is used, the long gun barrel is extended from the operation hole to one of the glue injection holes to inject glue until the adjacent glue injection hole is out, the glue shortage area is proved to be filled with glue, the glue injection is stopped, the maintenance success rate is greatly improved, and in the embodiment, the long gun barrel 11 is a specially-made long copper pipe and is convenient for glue injection. The aperture and the spacing of the glue injection holes 9 can be automatically adjusted according to the size of the glue shortage area and different used equipment, and are all within the protection scope of the invention.
Because of the different positions of the glue-starved spots, the web shapes are slightly different, and in other embodiments, as shown in fig. 3, the glue-starved spots are located between the webs, the operation holes are formed in the shell plate between the webs, and the long gun 11 is inserted into one of the glue injection holes 9 from the operation hole 6 for injecting glue by using the glue injection gun 10 with the long gun barrel, and the above embodiments are also within the scope of the present invention.
And S3, detecting again by using nondestructive inspection equipment, and plugging the holes of the shell by using related materials after the pass of the inspection is confirmed, so as to repair the surface.
It should be noted that, in S2, the second magnet 14 is fed into the operation hole 6 by using a magnet positioning tool, which includes a guide tube 12, a control wire 13 and a control rod 15, wherein the control wire 13 is inserted into the guide tube 12, the length of the control wire 13 is far longer than that of the guide tube 12, two ends of the control wire 13 are exposed out of the guide tube 12, and the second magnet 14 and the control rod 15 are respectively fixed at two ends of the control wire 13, as shown in fig. 1 and 4. In this embodiment the conduit 12 is a thin hollow copper tube, the control wire 13 is a thin wire, and the control rod 15 is a small thin rod. When the device is used, the copper pipe is connected with the magnet and is sent into the web plate glue shortage area from the operation hole, the copper pipe is swung back and forth outside, and the thin wire is far longer than the copper pipe, so that the magnet can move freely, the magnet is driven to find the opposite magnet in the possible glue shortage area, after the two magnets are attracted mutually, the small thin rod and the copper pipe are removed, and the slender marker pen stretches into the position of the marked magnet, so that a glue shortage point is found accurately. After marking, the small magnet is pulled out to finish the positioning of the glue shortage point.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (6)
1. A method for maintaining a wind power blade after nondestructive inspection of a girder is characterized by comprising the following steps: the method comprises the following steps:
s1, positioning outside a glue shortage point: marking the glue shortage point on the outer surface of the first shell plate by using a first magnet;
s2, positioning in a glue shortage point: the second shell plate and the first shell plate are oppositely arranged, a second magnet is conveyed into a web plate support leg where a glue shortage point is located through the second shell plate, the first magnet and the second magnet are attracted, and a glue shortage mark is made at the second magnet;
s3, glue supplementing: drilling a glue injection hole at the glue shortage mark and injecting glue;
in the step S2, an operation hole is formed in the second shell plate, and the second magnet is sent to a web plate where the glue shortage point is located through the operation hole; a lighting hole is formed in the second shell plate, and a light source is inserted into the lighting hole to illuminate the inside of the shell; and an observation hole is formed in the second shell plate for observing the internal condition of the shell.
2. The method for repairing the post-failure glue shortage of the nondestructive inspection girder of the wind power blade according to claim 1, which is characterized by comprising the following steps: in the step S3, a drilling machine provided with a long drill bit is used, and the long drill bit extends into the position of the adhesive shortage mark from the operation hole to drill an adhesive injection hole.
3. The method for repairing the post-failure glue shortage of the nondestructive inspection girder of the wind power blade according to claim 2, which is characterized in that: and the glue injection holes are arranged in a row, glue is injected into one of the glue injection holes until the glue is discharged from the adjacent glue injection holes, and the glue injection is stopped.
4. The method for repairing the post-failure glue shortage of the nondestructive inspection girder of the wind power blade according to claim 3, which is characterized by comprising the following steps: after the glue injection hole is finished, the long gun barrel is extended into the glue injection hole from the operation hole by using the glue injection gun with the long gun barrel, so that glue injection is performed.
5. The method for repairing the post-failure glue shortage of the nondestructive inspection girder of the wind power blade according to claim 4 is characterized in that: in S2, the second magnet is sent into the operation hole by using a magnet positioning tool, the magnet positioning tool comprises a guide pipe, a control wire and a control rod, the control wire is arranged in the guide pipe in a penetrating mode, the guide pipe is exposed out of two ends of the control wire, and the second magnet and the control rod are respectively fixed at two ends of the control wire.
6. The method for repairing the post-failure glue shortage of the nondestructive inspection girder of the wind power blade according to claim 1, which is characterized by comprising the following steps: and S3, performing nondestructive inspection on the blade, and repairing the surface of the shell after the blade is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110336318.7A CN112959697B (en) | 2021-03-29 | 2021-03-29 | Post-defect-adhesive-shortage maintenance method for nondestructive inspection girder of wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110336318.7A CN112959697B (en) | 2021-03-29 | 2021-03-29 | Post-defect-adhesive-shortage maintenance method for nondestructive inspection girder of wind power blade |
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| Publication Number | Publication Date |
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| CN112959697A CN112959697A (en) | 2021-06-15 |
| CN112959697B true CN112959697B (en) | 2023-07-25 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8091229B2 (en) * | 2011-03-08 | 2012-01-10 | General Electric Company | Method of repairing a subsurface void or damage for a wind turbine blade |
| CN105134505A (en) * | 2015-07-03 | 2015-12-09 | 上海长知实业有限公司 | Glue injection template and method for blade |
| CN105775162A (en) * | 2016-03-25 | 2016-07-20 | 哈尔滨飞机工业集团有限责任公司 | Method used for repairing local debonding fault of main paddle skin |
| CN108614034A (en) * | 2016-12-09 | 2018-10-02 | 苏州天顺风电叶片技术有限公司 | Wind power generation blade molds the ultrasonic detection method of trailing web and crossbeam bonding defect |
| CN109623460B (en) * | 2018-12-25 | 2020-06-05 | 上海艾港风电科技发展有限公司 | Screw installation, punching and positioning method for wind power blade lightning receptor |
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