CN102927051A - Improved blade of large-sized air cooling axial flow fan - Google Patents
Improved blade of large-sized air cooling axial flow fan Download PDFInfo
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- CN102927051A CN102927051A CN2012104591302A CN201210459130A CN102927051A CN 102927051 A CN102927051 A CN 102927051A CN 2012104591302 A CN2012104591302 A CN 2012104591302A CN 201210459130 A CN201210459130 A CN 201210459130A CN 102927051 A CN102927051 A CN 102927051A
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- blade
- wing surface
- air cooling
- reinforced plastic
- glass reinforced
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Abstract
The invention discloses an improved blade of a large-sized air cooling axial flow fan, which is characterized in that the blade comprises an upper wing surface and a lower wing surface, wherein the whole blade of the fan is formed by gluing front and back edges of the upper wing surface and the lower wing surface, the upper wing surface and the lower wing surface are in sandwich structures, the upper wing surface and the lower wing surface both comprise glass reinforced plastic outer layers and glass reinforced plastic inner layers, a hollow inner cavity is formed between each glass reinforced plastic inner layer and each glass reinforced plastic inner layer, and the hollow inner cavities is filled with foam. The improved blade has the advantages that as the upper wing surface and the lower wing surface are in the sandwich structures, the flexural rigidity is tens of times of that of a single-plate wing surface, the deformation and instability of the wing surfaces on the surface of the blade in an operational process of the air cooling fan, and violent vibration of the blade caused by the deformation and instability are prevented effectively, the safety and reliability of the blade are improved, the blade in a sandwich structure is lighter, the cost of blade materials is saved greatly, 70% of foamed plastic is saved compared with a blade filled completely with the foamed plastic, and consumption of heavier glass reinforced plastic beams and adhesive is saved compared with a hollow blade.
Description
Technical field
The present invention relates to a kind of improved large-scale air cooling axial-flow fan blade.
Background technique
Major diameter air cooling axial-flow blower is Large Direct-air-cooling thermal power generation unit key equipment, directly have influence on generator set reliability of operation and Security, and fiberglass blade is the critical component of air cooling axial-flow blower.The problem that conventional air-cooled fan blade exists is: the fiberglass blade aerofoil profile of large-scale air cooling blower fan is all more roomy, and length of blade can reach 5 meters, and width can reach 2 meters, and the glass fibre reinforced plastics thickness of blade airfoil is then thinner.After the moulding of the upper and lower blade profile difference of present conventional air-cooled fan blade, glued joint in the edge with binder again and help hollow-core construction, in aerofoil bosom part buttress brace is set.This structure blade is relatively poor in the hollow aerofoil position rigidity that does not have beam to strengthen.Thereby in the fan operation process, be easy to cause that the blade surface aerofoil is out of shape, unstability.Thereby cause aeroperformance to reduce; Hollow blade causes the blower fan equilibrium response to descend because the aerofoil buckling deformation, during operation vibration larger, the destruction that easily causes blade directly affects the fan operation reliability, in the Practical Project glass fiber reinforced plastics hollow leaf destruction accident occurs repeatedly at present.Therefore, should provide a kind of new technological scheme to address the above problem.
Summary of the invention
The objective of the invention is: for above-mentioned deficiency, provide a kind of improved large-scale air cooling axial-flow fan blade.
For achieving the above object, the technical solution used in the present invention is:
Improved large-scale air cooling axial-flow fan blade, comprise top airfoil and lower aerofoil, described top airfoil and lower aerofoil front and rear edge gummed form whole fan blade, described top airfoil and lower aerofoil are sandwich structure, described top airfoil and lower aerofoil include glass fibre reinforced plastics skin and glass fibre reinforced plastics internal layer, form hollow cavity between described glass fibre reinforced plastics skin and the glass fibre reinforced plastics internal layer, described hollow cavity inside is filled with foam.
The material of described foam is polyurethane foam.
Advantage of the present invention is: top airfoil and lower aerofoil are sandwich structure, and flexural rigidity is the decades of times of veneer aerofoil.Thereby effectively prevented distortion and the unstability of air cooling blower fan running Leaf surface aerofoil, and the blade high vibration that causes thus, thereby guaranteed the aeroperformance of blower fan, improved the safety reliability of blade; The interlayer blade can alleviate leaf weight, greatly saves the blade material cost.Blade than full-filling foamed plastics is saved 70% foamed plastics consumption; The materials of heavier glass fiber reinforced plastic beam and the consumption of adhesive have been saved than the empty stomach blade.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is structural representation of the present invention.
Wherein: 1, top airfoil, 2, lower aerofoil, 3, glass fibre reinforced plastics is outer, 4, the glass fibre reinforced plastics internal layer, 5, hollow cavity, 6, foam.
Embodiment
The improved large-scale air cooling axial-flow fan blade of the present invention, comprise top airfoil 1 and lower aerofoil 2, top airfoil 1 and lower aerofoil 2 front and rear edges gummed form whole fan blade, top airfoil 1 and lower aerofoil 2 are sandwich structure, top airfoil 1 and lower aerofoil 2 include glass fibre reinforced plastics outer 3 and glass fibre reinforced plastics internal layer 4, form hollow cavity 5 between glass fibre reinforced plastics outer 3 and the glass fibre reinforced plastics internal layer 4, hollow cavity 5 inside are filled with foam 6, and the material of foam 6 is polyurethane foam.
The improved large-scale air cooling axial-flow fan blade of the present invention, top airfoil 1 and lower aerofoil 2 are sandwich structure, and flexural rigidity is the decades of times of veneer aerofoil.Thereby effectively prevented distortion and the unstability of air cooling blower fan running Leaf surface aerofoil, and the blade high vibration that causes thus, thereby guaranteed the aeroperformance of blower fan, improved the safety reliability of blade; The interlayer blade can alleviate leaf weight, greatly saves the blade material cost.Blade than full-filling foamed plastics is saved 70% foamed plastics consumption; The materials of heavier glass fiber reinforced plastic beam and the consumption of adhesive have been saved than the empty stomach blade.
Claims (2)
1. improved large-scale air cooling axial-flow fan blade, it is characterized in that: comprise top airfoil and lower aerofoil, described top airfoil and lower aerofoil front and rear edge gummed form whole fan blade, described top airfoil and lower aerofoil are sandwich structure, described top airfoil and lower aerofoil include glass fibre reinforced plastics skin and glass fibre reinforced plastics internal layer, form hollow cavity between described glass fibre reinforced plastics skin and the glass fibre reinforced plastics internal layer, described hollow cavity inside is filled with foam.
2. described improved large-scale air cooling axial-flow fan blade according to claim 1, it is characterized in that: the material of described foam is polyurethane foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104591302A CN102927051A (en) | 2012-11-15 | 2012-11-15 | Improved blade of large-sized air cooling axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104591302A CN102927051A (en) | 2012-11-15 | 2012-11-15 | Improved blade of large-sized air cooling axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927051A true CN102927051A (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104591302A Pending CN102927051A (en) | 2012-11-15 | 2012-11-15 | Improved blade of large-sized air cooling axial flow fan |
Country Status (1)
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| CN (1) | CN102927051A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113830287A (en) * | 2021-10-11 | 2021-12-24 | 贵州贵飞飞机设计研究院有限公司 | Control surface with separated beam body edge strip and web plate surface and manufacturing method thereof |
Citations (11)
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| US3799701A (en) * | 1972-02-28 | 1974-03-26 | United Aircraft Corp | Composite fan blade and method of construction |
| CN2783004Y (en) * | 2004-10-11 | 2006-05-24 | 南通市净海暖通设备厂 | Large air cooling fan vane made of glass fibre reinforced plastics |
| US20090169392A1 (en) * | 2006-03-24 | 2009-07-02 | Mitsubishi Heavy Industries Ltd. | Wind turbine blade with sufficiently high strength and light weight |
| CN201330728Y (en) * | 2008-12-05 | 2009-10-21 | 江苏中联风能机械有限公司 | Blade of large scale air cooling fan |
| CN201621099U (en) * | 2010-03-26 | 2010-11-03 | 保定惠阳航空螺旋桨制造厂 | Fan blade |
| JP2011127481A (en) * | 2009-12-16 | 2011-06-30 | Mitsubishi Heavy Ind Ltd | Blade for axial blower |
| CN102575649A (en) * | 2009-12-25 | 2012-07-11 | 三菱重工业株式会社 | Windmill rotary vane |
| EP2518314A1 (en) * | 2009-12-25 | 2012-10-31 | Mitsubishi Heavy Industries, Ltd. | Windmill rotary vane |
| CN202520651U (en) * | 2012-04-28 | 2012-11-07 | 上虞市奥帅制冷工业有限公司 | Cooling tower draught fan wing-shaped vane |
| CN202520649U (en) * | 2011-12-29 | 2012-11-07 | 惠阳航空螺旋桨有限责任公司 | Large diameter cooling tower fan blade |
| CN202883479U (en) * | 2012-11-15 | 2013-04-17 | 江苏中联风能机械有限公司 | Improved large air-cooling axial flow fan blade |
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2012
- 2012-11-15 CN CN2012104591302A patent/CN102927051A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799701A (en) * | 1972-02-28 | 1974-03-26 | United Aircraft Corp | Composite fan blade and method of construction |
| CN2783004Y (en) * | 2004-10-11 | 2006-05-24 | 南通市净海暖通设备厂 | Large air cooling fan vane made of glass fibre reinforced plastics |
| US20090169392A1 (en) * | 2006-03-24 | 2009-07-02 | Mitsubishi Heavy Industries Ltd. | Wind turbine blade with sufficiently high strength and light weight |
| CN201330728Y (en) * | 2008-12-05 | 2009-10-21 | 江苏中联风能机械有限公司 | Blade of large scale air cooling fan |
| JP2011127481A (en) * | 2009-12-16 | 2011-06-30 | Mitsubishi Heavy Ind Ltd | Blade for axial blower |
| CN102575649A (en) * | 2009-12-25 | 2012-07-11 | 三菱重工业株式会社 | Windmill rotary vane |
| EP2518314A1 (en) * | 2009-12-25 | 2012-10-31 | Mitsubishi Heavy Industries, Ltd. | Windmill rotary vane |
| CN201621099U (en) * | 2010-03-26 | 2010-11-03 | 保定惠阳航空螺旋桨制造厂 | Fan blade |
| CN202520649U (en) * | 2011-12-29 | 2012-11-07 | 惠阳航空螺旋桨有限责任公司 | Large diameter cooling tower fan blade |
| CN202520651U (en) * | 2012-04-28 | 2012-11-07 | 上虞市奥帅制冷工业有限公司 | Cooling tower draught fan wing-shaped vane |
| CN202883479U (en) * | 2012-11-15 | 2013-04-17 | 江苏中联风能机械有限公司 | Improved large air-cooling axial flow fan blade |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113830287A (en) * | 2021-10-11 | 2021-12-24 | 贵州贵飞飞机设计研究院有限公司 | Control surface with separated beam body edge strip and web plate surface and manufacturing method thereof |
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Application publication date: 20130213 |