CN112665800A - Method for searching vacuum air leakage of wind power blade - Google Patents
Method for searching vacuum air leakage of wind power blade Download PDFInfo
- Publication number
- CN112665800A CN112665800A CN202011350553.1A CN202011350553A CN112665800A CN 112665800 A CN112665800 A CN 112665800A CN 202011350553 A CN202011350553 A CN 202011350553A CN 112665800 A CN112665800 A CN 112665800A
- Authority
- CN
- China
- Prior art keywords
- air leakage
- wind power
- container
- searching
- test solution
- 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
- 238000000034 method Methods 0.000 title claims abstract description 24
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000012085 test solution Substances 0.000 claims abstract description 21
- 238000005507 spraying Methods 0.000 claims abstract description 20
- 239000002390 adhesive tape Substances 0.000 claims abstract description 4
- 238000005429 filling process Methods 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000002950 deficient Effects 0.000 abstract 1
- 238000011161 development Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009755 vacuum infusion Methods 0.000 description 1
Abstract
The invention discloses a method for searching vacuum air leakage of a wind power blade, which comprises the following steps: step one, preparing a container; step two, filling phenolphthalein test solution into a container; step three, when air leakage occurs in the filling process, marking the air leakage range; step four, uniformly spraying the phenolphthalein test solution in a container filled with the phenolphthalein test solution within a defined range; fifthly, the spraying height is 200mm from the surface of the blade, and the distance between the spraying points along the length or width direction of the blade is 0.5 m; step six, observing whether the surface color of the spraying point changes; seventhly, if a local area turns red in the encircled air leakage range, immediately plugging the local area by using a vacuum adhesive tape, and plugging the red area; and step eight, after plugging, repeating the operation of the step five to recheck the surface and confirming whether the color changes. The method can accurately and efficiently search the air leakage position on the surface of the vacuum laying layer, reduces the defective rejection rate of the blade to the maximum extent, and is simple and effective.
Description
Technical Field
The invention relates to the field of wind power blade manufacturing, in particular to a method for searching vacuum air leakage of a wind power blade.
Background
With the increasing approach of the exhaustion schedules of traditional fossil energy sources such as coal, oil, natural gas and the like, the development and utilization of wind energy are more and more emphasized by people, and the development and utilization of wind energy become one of the projects with the most commercial popularization prospects in the energy field, at present, the development is rapid at home and abroad, the development of wind power generation depends on the production and manufacture of a large number of wind power generators, the wind power generators can not leave blades, because the wind power blades are usually manufactured by vacuum infusion molding, the general flow is to prepare a mold in advance, the shape of the mold is consistent with that of required components, then a release agent is coated on the mold, reinforcing materials such as glass fiber cloth, carbon fiber cloth, core materials and the like are laid according to a certain sequence, after the laying is finished, materials such as a flow guide net, an injection pipe and the like are arranged on the laid materials, materials such as an, two layers of vacuum systems are commonly used for cooperative work, and a vacuum pump is utilized to enable the whole system to reach a vacuum state; generally, tools such as a vacuum pressure gauge are adopted to check the vacuum degree of a vacuum system, when the pressure reaches a requirement and the descending amplitude within a certain time is smaller than a required value, the condition of filling is determined to be met, then resin is filled, and solidification forming is carried out. The air leakage remediation time is limited, a mode of quickly and accurately searching an air leakage point is not available, and the best remediation opportunity is often missed. And for the air leakage of the vacuum film sand hole, no good method is available at present for finding a leakage point, three-vacuum reverse pumping can be performed in a large range, and the waste force is not necessarily effective. In addition, the air leakage point is checked by experience, and is very good for new people
It is difficult to do so. Therefore, there is a need for an effective method for detecting air leakage.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for searching the vacuum air leakage of the wind power blade can accurately and efficiently search the air leakage position on the surface of the vacuum laying layer, reduces the poor rejection rate of the blade to the greatest extent, and is simple and effective.
The technical scheme adopted by the invention is as follows: it comprises the following steps:
step one, preparing a container;
step two, filling phenolphthalein test solution into a container;
step three, when air leakage occurs in the filling process, marking the air leakage range;
step four, uniformly spraying the phenolphthalein test solution in a container filled with the phenolphthalein test solution within a defined range;
fifthly, the spraying height is 200mm from the surface of the blade, and the distance between the spraying points along the length or width direction of the blade is 0.5 m;
step six, observing whether the surface color of the spraying point changes;
seventhly, if a local area turns red in the encircled air leakage range, immediately plugging the local area by using a vacuum adhesive tape, and plugging the red area;
and step eight, after plugging, repeating the operation of the step five to recheck the surface and confirming whether the color changes.
Preferably, in the first step, the container has a capacity of 2L-3L.
Preferably, in the step one, spraying is tried before filling operation, and it is confirmed that the guiding opening of the container is not blocked and can be sprayed or poured normally.
Preferably, in the second step, the phenolphthalein test solution is filled in the container to a position 2cm away from the guide opening of the container.
Preferably, in step four, the container containing phenolphthalein test solution is sprayed in a zigzag path within the range defined.
Preferably, in step five, the residence time at the same position does not exceed 2 s.
Preferably, in the seventh step, the plugging range is 2cm beyond the reddening zone.
Preferably, in step eight, the occlusion is complete and the time is observed for 5s after one surface spray.
According to the characteristic that the epoxy resin is alkaline, the principle that a phenolphthalein test solution does not change color when meeting an acid solution and a neutral solution and changes into red when meeting an alkaline solution is utilized, and when the phenolphthalein test solution meets the epoxy resin leaked from an air leakage opening, the phenolphthalein test solution changes from colorless to red, so that the air leakage opening is accurately positioned, and then the wind power blade surface layer with air leakage is repaired in time, so that the waste of consumables is reduced, and the rejection rate of the wind power blade is reduced to the maximum extent.
The present invention will be further described with reference to the following embodiments.
Detailed Description
The invention provides a method for searching vacuum air leakage of a wind power blade, which comprises the following steps:
step one, preparing a container with the capacity of about 2L-3L, preferably a container with a guiding opening like a watering pot, wherein the guiding opening has a spraying function and prevents the waste of solution, and except the guiding opening, the container can be stored in a sealing way preferably to prevent the evaporation or other accidents of the test solution;
secondly, filling phenolphthalein test solution into the container, and filling the phenolphthalein test solution to a position 2cm away from the guide port to prevent the phenolphthalein test solution from overflowing;
step three, when air leakage occurs in the filling process, namely, leakage points which cannot be identified by naked eyes, marking the air leakage range, wherein the range is an approximate range, and the specific range size is determined according to the actual situation;
step four, uniformly spraying the container filled with the phenolphthalein test solution in a Z-shaped path within a delineation range;
fifthly, the spraying height is 200mm from the surface of the blade, the distance between spraying points along the length direction or the width direction of the blade is 0.5m, the staying time at the same position is not more than 2s, because the length of the large-scale wind power blade is about 50m, the width of the large-scale wind power blade exceeds 1m, the spraying position can cover the whole delineation range with the phenolphthalein solution, and phenolphthalein waste is reduced to the maximum extent;
observing whether the color of the surface of the layer of the blade at the spraying point changes;
seventhly, if a local area turns red in the encircled air leakage range, indicating that the epoxy resin is reacted with phenolphthalein, namely indicating that air leakage exists in the area, immediately plugging the area by using a vacuum adhesive tape, and plugging the red area, wherein the area 2cm above the red area is a plugging range;
and step eight, after plugging, repeating the operation of the step five to recheck the surface, observing for 5s, and determining whether the color can be changed continuously.
The foregoing has described preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary, and various changes made within the scope of the independent claims of the present invention are within the scope of the present invention.
Claims (8)
1. A method for searching vacuum air leakage of a wind power blade is characterized by comprising the following steps:
step one, preparing a container;
step two, filling phenolphthalein test solution into a container;
step three, when air leakage occurs in the filling process, marking the air leakage range;
step four, uniformly spraying the phenolphthalein test solution in a container filled with the phenolphthalein test solution within a defined range;
fifthly, the spraying height is 200mm from the surface of the blade, and the distance between the spraying points along the length or width direction of the blade is 0.5 m;
step six, observing whether the surface color of the spraying point changes;
seventhly, if a local area turns red in the encircled air leakage range, immediately plugging the local area by using a vacuum adhesive tape, and plugging the red area;
and step eight, after plugging, repeating the operation of the step five to recheck the surface and confirming whether the color changes.
2. The method for searching the vacuum air leakage of the wind power blade according to claim 1, wherein the method comprises the following steps: in the first step, the capacity of the container is between 2L and 3L.
3. The method for searching the vacuum air leakage of the wind power blade according to claim 1, wherein the method comprises the following steps: in the first step, spraying is tried before filling operation, and the guide opening of the container is confirmed to be free from blockage and can be normally sprayed or poured.
4. The method for searching the vacuum air leakage of the wind power blade according to claim 1, wherein the method comprises the following steps: and in the second step, the phenolphthalein test solution is filled in the container until the position of 2cm of the guide opening of the container.
5. The method for searching the vacuum air leakage of the wind power blade according to claim 1, wherein the method comprises the following steps: in the fourth step, the container filled with phenolphthalein test solution is sprayed in a Z-shaped path within the range defined.
6. The method for searching the vacuum air leakage of the wind power blade according to claim 1, wherein the method comprises the following steps: in the fifth step, the residence time at the same position is not more than 2 s.
7. The method for searching the vacuum air leakage of the wind power blade according to claim 1, wherein the method comprises the following steps: and seventhly, blocking ranges are formed in positions 2cm above the reddening region.
8. The method for searching the vacuum air leakage of the wind power blade according to claim 1, wherein the method comprises the following steps: and step eight, after plugging is finished and the surface is sprayed once, observing for 5 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350553.1A CN112665800A (en) | 2020-11-26 | 2020-11-26 | Method for searching vacuum air leakage of wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350553.1A CN112665800A (en) | 2020-11-26 | 2020-11-26 | Method for searching vacuum air leakage of wind power blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112665800A true CN112665800A (en) | 2021-04-16 |
Family
ID=75403713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011350553.1A Pending CN112665800A (en) | 2020-11-26 | 2020-11-26 | Method for searching vacuum air leakage of wind power blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112665800A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706512A (en) * | 2011-06-07 | 2012-10-03 | 京东方科技集团股份有限公司 | Method and system for checking sealing effect of glass substrates |
| CN102825971A (en) * | 2011-12-02 | 2012-12-19 | 金朝阳 | Apparatus for carrying out artistic expression by color transfer and mixing |
| CN105459419A (en) * | 2016-01-19 | 2016-04-06 | 洛阳双瑞风电叶片有限公司 | Air leakage detecting device for vacuum infusion of composite and mounting and use method |
| CN107014567A (en) * | 2017-05-10 | 2017-08-04 | 冯浩 | A kind of reagent and application for being used to detect ammonia |
| CN108151978A (en) * | 2017-11-24 | 2018-06-12 | 重庆赛格尔汽车配件有限公司 | A kind of air-conditioning duct air-tightness rapid detection method |
| CN109540405A (en) * | 2018-11-07 | 2019-03-29 | 昌河飞机工业（集团）有限责任公司 | A kind of composite material shaping mould gas leakage test method |
| CN109974948A (en) * | 2019-04-23 | 2019-07-05 | 杭州铭铄机电科技有限公司 | It is a kind of for detecting the detection device of water-cooled motor shell leakproofness |
| CN211784122U (en) * | 2020-04-18 | 2020-10-27 | 宁波云达消防设备有限公司 | Rotatable leak hunting airtight equipment |
-
2020
- 2020-11-26 CN CN202011350553.1A patent/CN112665800A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706512A (en) * | 2011-06-07 | 2012-10-03 | 京东方科技集团股份有限公司 | Method and system for checking sealing effect of glass substrates |
| CN102825971A (en) * | 2011-12-02 | 2012-12-19 | 金朝阳 | Apparatus for carrying out artistic expression by color transfer and mixing |
| CN105459419A (en) * | 2016-01-19 | 2016-04-06 | 洛阳双瑞风电叶片有限公司 | Air leakage detecting device for vacuum infusion of composite and mounting and use method |
| CN107014567A (en) * | 2017-05-10 | 2017-08-04 | 冯浩 | A kind of reagent and application for being used to detect ammonia |
| CN108151978A (en) * | 2017-11-24 | 2018-06-12 | 重庆赛格尔汽车配件有限公司 | A kind of air-conditioning duct air-tightness rapid detection method |
| CN109540405A (en) * | 2018-11-07 | 2019-03-29 | 昌河飞机工业（集团）有限责任公司 | A kind of composite material shaping mould gas leakage test method |
| CN109974948A (en) * | 2019-04-23 | 2019-07-05 | 杭州铭铄机电科技有限公司 | It is a kind of for detecting the detection device of water-cooled motor shell leakproofness |
| CN211784122U (en) * | 2020-04-18 | 2020-10-27 | 宁波云达消防设备有限公司 | Rotatable leak hunting airtight equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101629024A (en) | Self-repairing fiber reinforced polymer matrix composite and preparation method thereof | |
| CN106641481B (en) | Fibrage winds pultrusion pipeline, processing unit (plant) and its production method | |
| CN103554840B (en) | A kind of room-temperature self-repairing type fibre enhancement epoxy composite material and preparation method thereof | |
| CN104167229A (en) | Passive containment shell condensed water injection system | |
| CN106833263A (en) | A kind of composite strengthens steel pipe and its manufacturing process | |
| CN103994031B (en) | A kind of carbon fibre fabric strengthens polymer matrix composites main beam cap and manufacture method thereof | |
| CN102234934A (en) | Laid fabric composite coil and manufacturing method thereof | |
| CN112665800A (en) | Method for searching vacuum air leakage of wind power blade | |
| CN109758910A (en) | Inspection method for repairing and mending for hollow fiber film assembly | |
| CN107891616A (en) | A kind of polymer matrix composites antenna house spraying forming device and method | |
| CN110682555A (en) | Preparation method of composite material pressure frame | |
| CN106429059A (en) | Composite material double-layer oil tank and manufacturing method | |
| CN108466437B (en) | Preparation and application of two-dimensional multidirectional prepreg cloth for containing casing with flange edge | |
| CN110549596A (en) | Embedded laminated structure preparation device and method | |
| CN204227025U (en) | Composites gas cylinder | |
| CN102721999B (en) | Polarization maintaining optical fiber for fiber-optic gyroscope | |
| CN101962109A (en) | Oil tank with two-wall structured inner anticorrosive layer and preparation method thereof | |
| CN109955504B (en) | Shape-following preparation mold and preparation method for three-dimensional porous heat-proof structure | |
| CN103668038A (en) | Metal transfer method for resin base and carbon fiber compound material | |
| CN102153981B (en) | High-strength impact-resistant composite repairing material and preparation method thereof | |
| CN110039797A (en) | A kind of ultraviolet light solidification pipeline material manufacturing process | |
| CN201626074U (en) | Male mold and female mold for wind turbine blade | |
| CN213598742U (en) | Glass fiber reinforced plastic fiber reinforced composite high-density polyethylene pipe | |
| CN105291432B (en) | Multiple degrees of freedom sprays photocuring 3D forming methods | |
| CN113510940A (en) | Preparation method of battery case based on composite material |
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: 20210416 |
|
| RJ01 | Rejection of invention patent application after publication |