CN201330728Y - Blade of large scale air cooling fan - Google Patents
Blade of large scale air cooling fan Download PDFInfo
- Publication number
- CN201330728Y CN201330728Y CNU2008200609664U CN200820060966U CN201330728Y CN 201330728 Y CN201330728 Y CN 201330728Y CN U2008200609664 U CNU2008200609664 U CN U2008200609664U CN 200820060966 U CN200820060966 U CN 200820060966U CN 201330728 Y CN201330728 Y CN 201330728Y
- Authority
- CN
- China
- Prior art keywords
- blade
- air cooling
- cooling fan
- polyurethane foam
- hard polyurethane
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model dicloses a blade of a large-scale air cooling fan, which comprises a moulding surface of a blade body and a blade root, wherein both the moulding surface of the blade body and the blade root adopt hollow structures, and hard polyurethane foam is filled in the hollow structures; the interior of the blade is filled with light and hard polyurethane foam in a foaming manner, so that the integral stiffness of the blade and the natural frequency of the blade are improved greatly; resonance is not easy to be produced within a range of application frequency; the reliability is improved; a counter weight is fixed in the hard polyurethane foam and is firmly glued in the polyurethane foam by resin; and the counter weight can not shift during the running of the fan, so that the balancing reliability is improved.
Description
Technical field
The utility model relates to a kind of axial-flow fan blade, particularly a kind of large-scale direct air cooling thermal power generation unit large-scale air cooling blower fan fiberglass blade.
Background technique
Major diameter air cooling axial-flow blower is large-scale 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 the air-cooled fan blade of present domestic use exists is: 1, existing air cooling fiberglass blower fan blade, all take hollow-core construction, easy local buckling, integral rigidity is relatively poor, its hollow-core construction blade natural frequency is lower, easily produce resonance in the fan frequency conversion operation, directly influence the fan operation reliability.2, existing air cooling fiberglass blower fan blade is owing to take hollow-core construction, and its counterweight thing does not have secure support in blower fan, easily be shifted when fan operation, thereby influence the blower fan balance quality, vibrates bigger.
Summary of the invention
The utility model large-scale air cooling fan blade, its purpose are to provide a kind of integrated type large-scale air cooling fan blade structure that can address the above problem.
The utility model large-scale air cooling fan blade, it is by blade profile (1), and blade root (2) is formed, and its blade profile and blade root are cancelled structure, filling hard polyurethane foams (3) in it, hard polyurethane foams (3) internal fixation has the counterweight thing.
The utility model beneficial effect is: blade interior foam filling hard lightweight polyamine fat vacuole foam, the integral rigidity and the blade natural frequency of blade have been increased substantially, in using speed range, be difficult for resonance, improved reliability, reliably glued joint in the polyamine ester foam with resin, mass can not be shifted when fan operation, has improved the balance reliability.
Description of drawings
Fig. 1 is the utility model large-scale air cooling fan blade structure schematic representation.
Embodiment
The utility model large-scale air cooling fan blade, it is by blade profile (1), and blade root (2) is formed, and its blade profile and blade root are cancelled structure, filling hard polyurethane foams (3) in it, hard polyurethane foams (3) internal fixation has the counterweight thing.
Claims (2)
1, large-scale air cooling fan blade, it is by the blade profile, and blade root is formed, and it is characterized in that: blade profile and blade root are cancelled structure, interior filling hard polyurethane foams.
2, large-scale air cooling fan blade according to claim 1, it is characterized in that: the hard polyurethane foams internal fixation has the counterweight thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200609664U CN201330728Y (en) | 2008-12-05 | 2008-12-05 | Blade of large scale air cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200609664U CN201330728Y (en) | 2008-12-05 | 2008-12-05 | Blade of large scale air cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201330728Y true CN201330728Y (en) | 2009-10-21 |
Family
ID=41224108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200609664U Expired - Fee Related CN201330728Y (en) | 2008-12-05 | 2008-12-05 | Blade of large scale air cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201330728Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781452A (en) * | 2010-03-05 | 2010-07-21 | 飞虎(厦门)聚氨酯制品有限公司 | Product of polyurethane-glass fiber resin compound material and method for preparing same |
| CN102927051A (en) * | 2012-11-15 | 2013-02-13 | 江苏中联风能机械有限公司 | Improved blade of large-sized air cooling axial flow fan |
| CN106812723A (en) * | 2015-11-30 | 2017-06-09 | 中航商用航空发动机有限责任公司 | blade, turbine and compressor |
-
2008
- 2008-12-05 CN CNU2008200609664U patent/CN201330728Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781452A (en) * | 2010-03-05 | 2010-07-21 | 飞虎(厦门)聚氨酯制品有限公司 | Product of polyurethane-glass fiber resin compound material and method for preparing same |
| CN102927051A (en) * | 2012-11-15 | 2013-02-13 | 江苏中联风能机械有限公司 | Improved blade of large-sized air cooling axial flow fan |
| CN106812723A (en) * | 2015-11-30 | 2017-06-09 | 中航商用航空发动机有限责任公司 | blade, turbine and compressor |
| CN106812723B (en) * | 2015-11-30 | 2019-05-03 | 中国航发商用航空发动机有限责任公司 | Blade, turbine and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20101205 |