CN103375433A - Hollow fan blade and designing and manufacturing method thereof - Google Patents
Hollow fan blade and designing and manufacturing method thereof Download PDFInfo
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- CN103375433A CN103375433A CN2012101162697A CN201210116269A CN103375433A CN 103375433 A CN103375433 A CN 103375433A CN 2012101162697 A CN2012101162697 A CN 2012101162697A CN 201210116269 A CN201210116269 A CN 201210116269A CN 103375433 A CN103375433 A CN 103375433A
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- fixed block
- shape fixed
- fan blade
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Abstract
A hollow fan blade comprises a first panel forming a pressure surface, a second panel forming a suction surface and H-shaped fixing pieces positioned between the first panel and the second panel. Each H-shaped fixing piece comprises a web plate in the middle and two side plates arranged at two ends of the web plate respectively, and one of the side plates of each H-shaped fixing piece is fixedly connected with the first panel while the other one is fixedly connected with the second panel. Since the H-shaped fixing pieces are fixedly connected with the first panel and the second panel, stress concentration of the hollow fan blade is reduced.
Description
Technical field
The present invention relates to the design and production method of a kind of hollow fan blade and hollow fan blade.
Background technique
The extensive metal hollow fan blade that adopts in civil aviation field mainly contains two kinds of structures at present, a kind of is Britain Rools-Royce disclosed Wahlen structure in U.S. Patent application US6979180B2, a kind of to be U.S. Alexandre Desplat Whitney company mill groove structure in blade interior in that patent application EP1754857A3 is disclosed, and material all adopts titanium alloy.
Chinese patent application CN200810146550.9 also discloses a kind of hollow fan blade of aeroengine, blade is the fabricated structure that blade body adds local panel, blade body comprises blade and complete tenon, groove is left at the middle part of the one side of blade on blade body, the edge of blade is solid body, local panel is the curved surface flat board corresponding with the shape face of blade body slotted zones, the welding of the edge of the rib of groove and slotted zones and local panel forms hollow blade on the blade of blade body.
The problem that above-mentioned structure exists is, perhaps the quality of blade is larger, and cost is high, stress perhaps occurs easily in the diffusion welding joint of blade interior Wahlen and wallboard concentrate and cause losing efficacy.
Summary of the invention
In order to address the above problem, the invention provides a kind of hollow fan blade, it comprises: the first panel of mineralization pressure face, the second panel that forms suction surface and " worker " shape fixed block between the first panel and the second panel; Wherein, " worker " shape fixed block comprises web part and two plate portion that lay respectively at the two ends, web part in the middle of being positioned at, and one of them of two plate portion is fixedly connected with the first panel, and another is fixedly connected with the second panel.
More preferably, be formed with chamber between the first panel, the second panel and " worker " shape fixed block, be filled with damping material in the chamber.
More preferably, the first panel, the second panel and " worker " shape fixed block are made by titanium alloy.
More preferably, plate portion gradually attenuation ground extension from the web part to two ends.
The present invention also provides a kind of method for the manufacture of hollow fan blade, comprises the steps:
(a) align successively the first panel, " worker " shape fixed block and the second panel, make " worker " shape fixed block between the first panel and the second panel and plate portion that will " worker " shape fixed block and first another plate portion of panel butt and the second panel butt with the formation assemblying body;
(b) diffusion welding connects described assemblying body, so that the first panel, the second panel are fixed together with " worker " shape fixed block respectively;
(c) assemblying body that has been fixed together of superplastic forming;
(d) form hollow fan blade.
More preferably, " worker " shape fixed block step (a) be shaped as first before its plate portion from the joint of plate portion and web part to two ends the shape of attenuation gradually.
More preferably, step (c) afterwards step (d) also comprise before the step of filling damping material in the first panel, " worker " shape fixed block and the formed chamber of the second panel.
Owing to adopt in the present invention " worker " shape fixed block and the first panel and be connected panel and be connected, can reduce so its stress is concentrated; And also be provided with damping material in blade interior, therefore can absorb better the energy of hollow fan blade vibration.
Description of drawings
In order to explain the present invention, its illustrative embodiments will be described with reference to the drawings hereinafter, in the accompanying drawing:
Fig. 1 shows the overlap assembly schematic representation before of the first panel, the second panel and " worker " shape fixed block;
Fig. 2 shows the be assembled together inside partial schematic diagram of rear formed hollow fan blade of the first panel shown in Figure 1, the second panel and " worker " shape fixed block, wherein, and the shell around having removed;
Fig. 3 shows the schematic sectional view of " worker " shape fixed block among Fig. 1;
Fig. 4 shows the schematic sectional view of another kind of hollow fan blade.
Similar features among the different figure is by similar reference character indication.
Embodiment
Each assembly that Fig. 1 shows a kind of hollow fan blade 100 is not assembled in state together, and these assemblies comprise: the first panel 102, the second panel 104 and " worker " shape fixed block 106 between the first panel 102 and the second panel 104.Wherein, the first panel 102, the second panel 104 and " worker " shape fixed block 106 are made by titanium alloy material.With reference to figure 3, should be consisted of by web part 106a and two plate portion 106b that lay respectively at this web part 106a one side in the middle of being positioned at by " worker " shape fixed block 106.
When making hollow fan blade 100, carry out following steps:
At first, the first panel 102, " worker " shape fixed block 106 and the second panel 104 successively align, the plate portion 106b that makes " worker " shape fixed block 106 between the first panel 102 and the second panel 104 and will " worker " shape fixed block 106 and the first panel 102 butts are simultaneously with another plate portion 106b and the second panel 104 butts, with the formation assemblying body;
Secondly, the first panel 102, the second panel 104 carry out diffusion welding with " worker " shape fixed block 106 respectively and are connected, and like this, the first panel 102, the second panel 104 are fixed together with " worker " shape fixed block 106 respectively;
Again, the assemblying body that has been fixed together of superplastic forming;
At last, form the hollow fan blade that is assembled together 100 shown in Figure 2.
With reference to figure 2, in this hollow fan blade 100, the first panel 102 mineralization pressure faces, the second panel 104 forms suction surface, the plate portion 106b of one side of " worker " shape fixed block 106 is fixed on the first panel 102, and the plate portion 106b of opposite side is fixed on the second panel 104.
As shown in the figure, in more excellent mode of execution, the thickness of the plate portion 106b of " worker " shape fixed block 106 is from web part 106a gradually attenuation ground extension to two ends, and this can make concentrated the reducing of stress of the joint of " worker " shape fixed block 106 and the first panel 102 and the second panel 104.Therefore, in order in the process of making hollow fan blade, to use this preferred " worker " shape fixed block 106, those skilled in the art should be appreciated that above-mentioned steps (a) need before first " worker " shape fixed block 106 to be configured as its plate portion 106b from the joint of plate portion 106b and web part 106a to two ends the shape of attenuation gradually.
Those skilled in the art should be appreciated that the first panel 102, the second panel 104 and " worker " shape fixed block 106 are not limited to be made by titanium alloy material.
Fig. 4 shows another kind and has made the hollow fan blade 200 of finishing, and this hollow fan blade 200 comprises following assembly: the first panel 102, the second panel 104, " worker " shape fixed block 106 and damping material 108 between the first panel 102 and the second panel 104.Wherein, the first panel 102, the second panel 104 and " worker " shape fixed block 106 are made by titanium alloy material.Should be consisted of by web part and two plate portion that lay respectively at this web part one side in the middle of being positioned at by " worker " shape fixed block 106.Damping material 108 is limited in the chamber of the first panel 102, the second panel 104 and 106 formation of " worker " shape fixed block.
When making hollow fan blade 200, carry out following steps:
At first, the first panel 102, " worker " shape fixed block 106 and the second panel 104 successively align, make " worker " shape fixed block 106 between the first panel 102 and the second panel 104, and with plate portion of " worker " shape fixed block 106 and the first panel 102 butts simultaneously with another plate portion and the second panel 104 butts, to form assemblying body;
Secondly, the first panel 102, the second panel 104 carry out diffusion welding with " worker " shape fixed block 106 respectively and are connected, and like this, the first panel 102, the second panel 104 are fixed together with " worker " shape fixed block 106 respectively;
Then, the assemblying body that has been fixed together of superplastic forming;
Then, in the first panel 102, " worker " shape fixed block 106 and the second panel 104 formed chambers, fill damping material 108;
At last, Formation cross-section hollow fan blade 200 as shown in Figure 4.In preferrred embodiment of the present invention, the thickness of the plate portion of " worker " shape fixed block 106 is gradually attenuation ground extension from the web part to two ends, and this can make concentrated the reducing of stress of the joint of " worker " shape fixed block 106 and the first panel 102 and the second panel 104; Therefore, those skilled in the art should be appreciated that, if in making above-mentioned hollow fan blade, use this more excellent " worker " shape fixed block 106, then need to above-mentioned steps (a) before " worker " shape fixed block 106 is configured as its plate portion from the joint of plate portion and web part to two ends the shape of attenuation gradually.
In addition, damping material can absorb the energy of hollow fan blade 200 vibrations better.
The present invention is limited to the illustrative embodiments that presents never in any form in specification and accompanying drawing.All combinations of the mode of execution that illustrates and describe (part) are interpreted as clearly to incorporate within this specification and be interpreted as clearly and fall within the scope of the present invention.And in the scope of the present invention of summarizing such as claims, a lot of distortion are possible.In addition, any reference mark in claims should be configured to limit the scope of the invention.
Claims (7)
1. hollow fan blade, it comprises: the first panel of mineralization pressure face, the second panel that forms suction surface and " worker " shape fixed block between described the first panel and described the second panel; Wherein, described " worker " shape fixed block comprises web part and two plate portion that lay respectively at two ends, described web part in the middle of being positioned at, one of them of two plate portion is fixedly connected with described the first panel, and another is fixedly connected with described the second panel.
2. hollow fan blade according to claim 1 is characterized in that, described plate portion is gradually attenuation ground extension from described web part to two ends.
3. hollow fan blade according to claim 1 and 2 is characterized in that, is formed with chamber between described the first panel, described the second panel and described " worker " shape fixed block, is filled with damping material in the described chamber.
4. hollow fan blade according to claim 1 and 2 is characterized in that, described the first panel, described the second panel and described " worker " shape fixed block are made by titanium alloy.
5. the method for the manufacture of hollow fan blade comprises the steps:
(a) align successively the first panel, " worker " shape fixed block and the second panel, make described " worker " shape fixed block between described the first panel and described the second panel and with a plate portion of described " worker " shape fixed block and described first another plate portion of panel butt and described the second panel butt with the formation assemblying body;
(b) diffusion welding connects described assemblying body, so that described the first panel, described the second panel are fixed together with described " worker " shape fixed block respectively;
(c) assemblying body that has been fixed together of superplastic forming;
(d) form hollow fan blade.
6. method according to claim 5 is characterized in that, described " worker " shape fixed block step (a) be shaped as first before its plate portion from the joint of described plate portion and web part to two ends the shape of attenuation gradually.
7. according to claim 5 or 6 described methods, it is characterized in that, described method step (c) afterwards step (d) also comprise before the step of filling damping material in described the first panel, " worker " shape fixed block and the formed chamber of described the second panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101162697A CN103375433A (en) | 2012-04-19 | 2012-04-19 | Hollow fan blade and designing and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101162697A CN103375433A (en) | 2012-04-19 | 2012-04-19 | Hollow fan blade and designing and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN103375433A true CN103375433A (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101162697A Pending CN103375433A (en) | 2012-04-19 | 2012-04-19 | Hollow fan blade and designing and manufacturing method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4971521A (en) * | 1988-04-28 | 1990-11-20 | Matsushita Electric Industrial Co., Ltd. | Airfoil blade for impeller fan and manufacturing method thereof |
| EP0902165A2 (en) * | 1997-09-10 | 1999-03-17 | United Technologies Corporation | Impact resistant hollow airfoils |
| CN101131099A (en) * | 2006-08-23 | 2008-02-27 | 西门子公司 | Coated turbine blade |
| CN201347893Y (en) * | 2008-12-30 | 2009-11-18 | 保定惠阳航空螺旋桨制造厂 | Light alloy axial-flow fan blade |
| CN102076957A (en) * | 2008-06-24 | 2011-05-25 | 丹麦技术大学 | Reinforced wind turbine blade |
-
2012
- 2012-04-19 CN CN2012101162697A patent/CN103375433A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4971521A (en) * | 1988-04-28 | 1990-11-20 | Matsushita Electric Industrial Co., Ltd. | Airfoil blade for impeller fan and manufacturing method thereof |
| EP0902165A2 (en) * | 1997-09-10 | 1999-03-17 | United Technologies Corporation | Impact resistant hollow airfoils |
| CN101131099A (en) * | 2006-08-23 | 2008-02-27 | 西门子公司 | Coated turbine blade |
| CN102076957A (en) * | 2008-06-24 | 2011-05-25 | 丹麦技术大学 | Reinforced wind turbine blade |
| CN201347893Y (en) * | 2008-12-30 | 2009-11-18 | 保定惠阳航空螺旋桨制造厂 | Light alloy axial-flow fan blade |
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Application publication date: 20131030 |
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| RJ01 | Rejection of invention patent application after publication |