CN111923455A - Large wind power blade pouring method - Google Patents
Large wind power blade pouring method Download PDFInfo
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- CN111923455A CN111923455A CN202010625482.5A CN202010625482A CN111923455A CN 111923455 A CN111923455 A CN 111923455A CN 202010625482 A CN202010625482 A CN 202010625482A CN 111923455 A CN111923455 A CN 111923455A
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- flow channel
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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
- 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
- B29C70/681—Component parts, details or accessories; Auxiliary operations
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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
- 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
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- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a large-scale wind power blade perfusion method, which comprises the following steps: laying an annular flow channel in an annular area of the whole blade skin close to a blade root; laying a flow channel as a main flow channel along the axial direction of the blade and close to the edge of the main girder at the rear edge; laying a flow channel, namely a first flow channel, in the area of the front edge close to the frustum pyramid; laying a flow channel, namely a second flow channel, in the middle area of the front edge, close to the edge of the front edge; laying a flow passage from the root to the leaf of the trailing edge, namely a third flow passage; and simultaneously or alternatively opening the valves on the flow passages. According to the invention, the flow passages are reasonably laid according to the actual length of the blade, so that the flow passages are small in number and simple in structure, the pouring time is shortened by a synchronous pouring mode, and the pouring efficiency is improved.
Description
Technical Field
The invention relates to the technical field of wind power blades, in particular to a large-scale wind power blade perfusion method.
Background
The traditional glue pouring system for the wind power blade is characterized in that runners are axially laid on the surface of an inner skin, but the axial runners of a large-sized blade are more in number requirement, the runners are difficult to lay, the distance between the runners is difficult to control, air inclusion is easy to form in the pouring process, and other quality problems exist; due to the negative pressure trend, the glue injection pipe can be opened only when the glue solution completely permeates all cloth layers between the runners and the glue solution exceeds the next runner by 10-20cm, the phenomenon of difficult gluing in a certain area is easily caused, and the time of filling waiting is long.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for pouring the large-scale wind power blade has the advantages that the flow channels are reasonably paved according to the actual length of the blade, the number of the flow channels is small, the structure is simple, the pouring time is shortened by a synchronous pouring mode, and the pouring efficiency is improved.
The technical scheme adopted by the invention is as follows: it comprises the following steps:
step one, laying an annular flow channel in an annular area of the whole blade skin close to a blade root;
step two, laying a flow channel as a main flow channel along the axial direction of the blade and close to the edge of the main girder at the rear edge;
thirdly, laying a flow channel, namely a first flow channel, in the area of the front edge close to the frustum pyramid;
fourthly, laying a flow channel, namely a second flow channel, in the middle area of the front edge, close to the front edge;
step five, paving a flow channel from the root to the leaf area of the trailing edge, namely a third flow channel;
and step six, simultaneously or at intervals opening valves on the flow channels.
Preferably, the number of the main flow channels is more than one, and the main flow channels are positioned at the rear edge or the front edge of the main beam.
Preferably, the main flow channel is respectively provided with a first valve, a second valve, a third valve, a fourth valve and a fifth valve along the axial direction, the first valve is provided with a sixth valve, the second valve is provided with a seventh valve, the third valve is provided with an eighth valve, the first valve is located at a position 1.3m away from the blade root, the second valve is located at a position 1.8m away from the blade root, the third valve is located at a position 12.5m away from the blade root, the fourth valve is located at a position 29.5m away from the blade root, the fifth valve is located at a position 47m away from the blade root, the sixth valve is located at a position 4m away from the blade root, the seventh valve is located at a position 16m away from the blade root, and the eighth valve is located at a position 12.5.
Preferably, the first flow channel, the second flow channel and the third flow channel are all parallel to the main flow channel, and the first flow channel is 1.6m away from the main flow channel, the second flow channel is 0.8m away from the main flow channel, and the third flow channel is 1.6m away from the main flow channel.
Preferably, the circumferential flow path is 1.5m from the blade root.
Preferably, the first flow channel is close to the blade root end and is merged with the annular flow channel, the main flow channel is close to the blade root end and is merged with the annular flow channel, and an air suction bag is paved at each of the two merged parts.
The invention has the following advantages: the circumferential flow channel is laid at the blade root, then two flow channels, namely a first flow channel and a second flow channel, are laid at the front edge along the axial direction, and two flow channels, namely a main flow channel and a third flow channel, are laid at the rear edge, so that the number of the flow channels is reduced as much as possible, the number of glue injection ports is correspondingly reduced, the construction is simple and convenient, and the waste of resin glue is reduced; the valves on the flow passages can be opened simultaneously, so that the whole filling time is reduced, the valves can also be opened indirectly, the valves are flexibly applied according to different working conditions, the filling time is shortened, the probability of problems in the filling process is reduced, and the filling quality is improved; the runner junction is equipped with the air pumping bag, and the resin glue of junction forms the package gas defect easily because the flow is great, and the air pumping bag then can avoid the package gas to form, reduces the gas leakage risk simultaneously, improves and fills the quality.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Wherein, 1, a blade; 2. a blade root; 3. leaf, leaf; 4. a blade tip; 5. a leading edge; 6. a trailing edge; 7. a prismatic table area; 8. an annular flow passage; 9. a main flow channel; 10. a first flow passage; 11. a second flow passage; 12. a third flow path; 13. a first valve; 14. a second valve; 15. a third valve; 16. a fourth valve; 17. a fifth valve; 18. a sixth valve; 19. a seventh valve; 20. an eighth valve; 21. and (6) air pumping.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
The invention relates to a pouring method for a large-scale wind power blade, which comprises the following steps:
firstly, laying an annular flow channel 8 and an annular flow channel 8 in an annular area close to a blade root 2 on a skin of the whole blade 1;
secondly, laying a flow channel as a main flow channel 9 along the axial direction of the blade 1 and close to the main beam edge of the rear edge 6;
thirdly, laying a flow channel, namely a first flow channel 10, on the front edge 5 close to the frustum region 7;
fourthly, laying a runner, namely a second runner 11, in the middle area of the front edge 5 close to the edge of the front edge 5;
fifthly, laying a flow channel, namely a third flow channel 12, in the region from the root 2 to the leaf 3 of the trailing edge 6;
and step six, simultaneously or at intervals opening valves on the flow channels.
In this embodiment, the total length of blade 1 is about 70m, and sprue 9 quantity is one, lays near to girder department, certainly, sprue 9 quantity can carry out the moderate degree according to operating condition and increase, and there is large tracts of land turning and the cloth layer is thicker if the blade 1 that fills, and the process of filling produces easily and blocks, consequently can be appropriate add sprue 9 and supply to glue.
As shown in fig. 1, the main flow channel 9 is provided with a first valve 13, a second valve 14, a third valve 15, a fourth valve 16 and a fifth valve 17 along the axial direction, the first flow channel 10 is provided with a sixth valve 18, the second flow channel 11 is provided with a seventh valve 19, the third flow channel 12 is provided with an eighth valve 20, the first valve 13 is located 21.3m away from the blade root, the second valve 14 is located 21.8m away from the blade root, the third valve 15 is located 212.5m away from the blade root, the fourth valve 16 is located 229.5m away from the blade root, and the fifth valve 17 is located 247m away from the blade root.
The first flow channel 10, the second flow channel 11 and the third flow channel 12 are all parallel to the main flow channel 9, the distance from the first flow channel 10 to the main flow channel 9 is 1.6m, the distance from the second flow channel 11 to the main flow channel 9 is 0.8m, the distance from the third flow channel 12 to the main flow channel 9 is 1.6m, and the distance from the circumferential flow channel 8 to the blade root 2 is 1.5 m.
In this embodiment, one end of the main flow channel 9 joins the annular flow channel 8, and the other end is close to the blade tip 4, and the length of the main flow channel 9 may be adjusted according to actual conditions, and is not necessarily distributed to the blade tip 4 from the blade root 2.
In this embodiment, the main runner 9 is an uninterrupted whole pipeline, and certainly, the main runner 9 can be laid in a segmented manner, and the segmented manner is suitable for the condition that the surface of the blade 1 is uneven, and meanwhile, the valve is correspondingly added, so that the main runner 9 is more comfortable when laid on the blade 1, the main runner 9 is prevented from being bent, resin adhesive waste is caused, and the filling risk is increased.
In this embodiment, the first flow channel 10 and the second flow channel 11, i.e., the third flow channel 12, are all disposed parallel to the main flow channel 9, but of course, the flow channels may not be parallel to the main flow channel 9, and the moving length, angle and position between the flow channels may be appropriately adjusted according to the size and shape of the actual blade 1.
In this embodiment, taking the blade 1 with a total length of 70m and a width of 4.6m as an example, the specific positions of the glue injection ports, i.e. the valves, are as described above, and the flow rates of the corresponding glue injection ports are respectively set as: the first valve 13 to the fifth valve 13 on the main channel 9 are 3.1, 3.7, 4.9 and 5.5kg/min, the sixth valve 18 is 2.1kg/min, the seventh valve 19 is 2.6kg/min, the eighth valve 20 is 5.0kg/min, the opening time of the first valve 13 to the eighth valve 20 is 0, 3 to 5, 10, 15, 20, 5 to 10, 35 to 40 and 5 to 10min, according to the speed and time, all the valves are opened simultaneously, the skin of the whole blade 1 is expected to be filled for about 50min, and the conventional filling method generally arranges a plurality of channels in a vein-shaped structure, the middle main channel is the most main channel, and the filling time of the same blade 1 and speed is about 1h30min approximately on the premise that the blade 1 and the speed are filled, but the method saves nearly half time.
In addition, the end of the first flow passage 10 close to the blade root 2 is merged with the annular flow passage 8, the end of the main flow passage 9 close to the blade root 2 is merged with the annular flow passage 8, an air exhaust bag 21 is respectively laid at the junction of the two positions, the air exhaust bag 21 can be detached, the air exhaust bag 21 exhausts the interior of the flow passage to prevent the defect of glue and air mixing generated under the condition of large flow at the junction, the size and the installation mode of the air exhaust bag 21 are needless, and the driving force of the air exhaust bag generally adopts related electric auxiliary equipment.
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 (7)
1. A large-scale wind power blade perfusion method is characterized by comprising the following steps:
step one, laying an annular flow channel in an annular area of the whole blade skin close to a blade root;
step two, laying a flow channel as a main flow channel along the axial direction of the blade and close to the edge of the main girder at the rear edge;
thirdly, laying a flow channel, namely a first flow channel, in the area of the front edge close to the frustum pyramid;
fourthly, laying a flow channel, namely a second flow channel, in the middle area of the front edge, close to the front edge;
step five, paving a flow channel from the root to the leaf area of the trailing edge, namely a third flow channel;
and step six, simultaneously or at intervals opening valves on the flow channels.
2. The method for pouring the large-scale wind power blade according to claim 1, wherein the method comprises the following steps: the total length of the blade is 70 m.
3. The method for pouring the large-scale wind power blade according to claim 1, wherein the method comprises the following steps: the number of the main flow channels is more than one, and the main flow channels are positioned at the rear edge or the front edge of the main beam.
4. The method for pouring the large-scale wind power blade according to claim 1 or 3, wherein the method comprises the following steps: the main runner is respectively provided with a first valve, a second valve, a third valve, a fourth valve and a fifth valve along the axial direction, the first valve is provided with a sixth valve, the second valve is provided with a seventh valve, the third valve is provided with an eighth valve, the first valve is located at a position 1.3m away from the blade root, the second valve is located at a position 1.8m away from the blade root, the third valve is located at a position 12.5m away from the blade root, the fourth valve is located at a position 29.5m away from the blade root, the fifth valve is located at a position 47m away from the blade root, the sixth valve is located at a position 4m away from the blade root, the seventh valve is located at a position 16m away from the blade root, and the eighth valve is located at a position 12.5.
5. The method for pouring the large-scale wind power blade according to claim 4, wherein the method comprises the following steps: the first flow channel, the second flow channel and the third flow channel are all parallel to the main flow channel, the distance between the first flow channel and the main flow channel is 1.6m, the distance between the second flow channel and the main flow channel is 0.8m, and the distance between the third flow channel and the main flow channel is 1.6 m.
6. The method for pouring the large-scale wind power blade according to claim 1, wherein the method comprises the following steps: the distance between the annular flow channel and the blade root is 1.5 m.
7. The method for pouring the large-scale wind power blade according to claim 1 or 6, wherein the method comprises the following steps: the first flow channel is close to the blade root end and is converged with the annular flow channel, the main flow channel is close to the blade root end and is converged with the annular flow channel, and an air suction bag is paved at each of the two converged positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010625482.5A CN111923455A (en) | 2020-07-02 | 2020-07-02 | Large wind power blade pouring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010625482.5A CN111923455A (en) | 2020-07-02 | 2020-07-02 | Large wind power blade pouring method |
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| CN111923455A true CN111923455A (en) | 2020-11-13 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456256A (en) * | 2009-01-09 | 2009-06-17 | 中材科技风电叶片股份有限公司 | Megawatt level composite material wind electricity blade vacuum guiding and forming technique |
| CN102294833A (en) * | 2011-09-14 | 2011-12-28 | 上海尔华杰机电装备制造有限公司 | Vacuum pump station system for vacuum infusion |
| CN107160711A (en) * | 2016-03-07 | 2017-09-15 | 上海艾郎风电科技发展（集团）有限公司 | Vacuum infusion method for blade |
| CN108262996A (en) * | 2018-01-31 | 2018-07-10 | 江苏金风科技有限公司 | Priming by vacuum control system and its control method |
| CN209409356U (en) * | 2018-12-13 | 2019-09-20 | 东方电气（天津）风电叶片工程有限公司 | Pipe laying structure is perfused in composite material wind-power blade shell |
-
2020
- 2020-07-02 CN CN202010625482.5A patent/CN111923455A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456256A (en) * | 2009-01-09 | 2009-06-17 | 中材科技风电叶片股份有限公司 | Megawatt level composite material wind electricity blade vacuum guiding and forming technique |
| CN102294833A (en) * | 2011-09-14 | 2011-12-28 | 上海尔华杰机电装备制造有限公司 | Vacuum pump station system for vacuum infusion |
| CN107160711A (en) * | 2016-03-07 | 2017-09-15 | 上海艾郎风电科技发展（集团）有限公司 | Vacuum infusion method for blade |
| CN108262996A (en) * | 2018-01-31 | 2018-07-10 | 江苏金风科技有限公司 | Priming by vacuum control system and its control method |
| CN209409356U (en) * | 2018-12-13 | 2019-09-20 | 东方电气（天津）风电叶片工程有限公司 | Pipe laying structure is perfused in composite material wind-power blade shell |
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Application publication date: 20201113 |
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