CN204458513U - Wind-tunnel axial flow compressor fan - Google Patents
Wind-tunnel axial flow compressor fan Download PDFInfo
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- CN204458513U CN204458513U CN201420783399.0U CN201420783399U CN204458513U CN 204458513 U CN204458513 U CN 204458513U CN 201420783399 U CN201420783399 U CN 201420783399U CN 204458513 U CN204458513 U CN 204458513U
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Abstract
The utility model discloses a kind of wind-tunnel axial flow compressor fan, it comprises wheel hub and 16 ~ 30 composite material blades; The dovetail configuration of root of blade is 30 °-90 ° near the angle of the bi-side of blade body, fixes dottle pin on the surface of these bi-side and bottom surface; Wheel hub has bottom surface has two and above in have the dovetail groove of the spring-housing groove of spring; The dovetail configuration of root of blade is placed in the dovetail groove of wheel hub, and its forward and backward both ends of the surface are fixedly clamped by the baffle plate be fixed on wheel hub; Root of blade, except the bi-side being mutually 30 ° of-90 ° of angles contact with dovetail groove wall, leaves gap between all the other each and dovetail groove wall; Dottle pin is fixed with at the root of blade with two baffle plate contact positions.The linkage structure connection reliability of rotor blade of the present utility model and wheel hub is high, and structure is more reasonable, longer service life, installs, Measuring error convenient disassembly, blade design and moulding process more simple.
Description
Technical field
The utility model relates to a kind of wind-tunnel axial flow compressor fan.
Background technique
Wind-tunnel axial flow compressor is generally 2 ~ moderate breeze fan, every grade of fan has 16 ~ 30 blades, it is the core of wind-tunnel power, the key technology of design is except pneumatic design, the linkage structure of rotor blade and wheel hub is also one of object of emphasis consideration in the design, along with the application on the compressor of composite material rotor blade, the linkage structure design significance of rotor blade and wheel hub highlights more.
Existing displacement rotor blade, generally that rotor blade is fixed in pitch change axes by bearing pin, pitch change axes is connected on wheel hub, this linkage structure simplicity of design, assembles, repair demolition is convenient and manufacturability is better, but for the blade of composite material, perforate on blade, aperture can produce microdefect in mechanical processing process, and in blade working loading process, microdefect can be expanded gradually, thus reduces the working life of blade; And in wind-tunnel rotor operation process, due to reasons such as air and hole wall frictions, the temperature of compressor assembly can raise gradually, because metal pin is different with the thermal expansion factor of the composite material of blade, the two is again drive fit, so blade can produce larger internal stress in the position in hole, this is also one of reason affecting blade working life.Linkage structure form for non-displacement rotor blade and wheel hub is more, some linkage structures are directly inserted by root of blade in the connection straight trough of wheel hub, be bolted connection, its connection is relatively reliable, assembling, repair demolition are conveniently, for the blade of composite material, there is above-mentioned shortcoming equally in the drive fit of punching and blade and bolt on composite material blade; And be and tunnel airstream rectification devise chimb at root of blade, this makes troubles not only to the global design of blade structure, and makes blade forming technique also suitable loaded down with trivial details.Another kind of linkage structure is that wheel hub has interior oval connecting groove young greatly, and blade lower end and this connecting groove of composite material are connected completely, and is and tunnel airstream rectification, devises chimb at root of blade; The connection reliability of this structure is good, but because root of blade and wheel hub mounting groove are drive fit, installation, maintenance dismounting is inconvenient, and in wind-tunnel rotor operation process, due to reasons such as air and hole wall frictions, the temperature of compressor assembly can raise gradually, produces internal stress, cause the reduction in working life between friction tight composite material blade and metal wheel hub because thermal expansion factor is different; And the increase of root of blade chimb, this makes troubles not only to the global design of blade structure, and makes blade forming technique also suitable loaded down with trivial details.A kind of linkage structure is also had not punch on composite material blade, but directly respectively mold a bolt blocked hole at the forward and backward two ends of root of blade, this place is connected across on wheel hub, lower end is bolted on wheel hub, its connection reliability is very high, but installation, maintenance dismounting is inconvenient, the structural design of blade is heavy, and blade forming is very difficult.
Model utility content
The purpose of this utility model solves the above-mentioned problems in the prior art exactly, a kind of wind-tunnel axial flow compressor fan is provided, the rotor blade of this fan and the linkage structure connection reliability of wheel hub high, structure is more reasonable, longer service life, install, Measuring error convenient disassembly, blade design and moulding process more simple.
For achieving the above object, technical solution of the present utility model is: a kind of wind-tunnel axial flow compressor fan, it comprises wheel hub and 16 ~ 30 composite material blades, the root thickness Cross section Design of blade becomes Hexagon dovetail configuration, this Hexagon dovetail configuration is 30 °-90 ° near the angle of the bi-side of blade body, fixes the dottle pin of layer of glass material on the surface of these bi-side and bottom surface; Wheel hub evenly has the dovetail groove that with the dovetail configuration of root of blade match identical with blade number, the bottom surface of dovetail groove has two and above spring-housing groove, spring is placed in spring-housing groove; The dovetail configuration of root of blade is placed in the dovetail groove of wheel hub, and its forward and backward both ends of the surface are fixedly clamped by the baffle plate be bolted on wheel hub; The dovetail configuration of root of blade is except the bi-side being mutually 30 ° of-90 ° of angles contact with dovetail groove wall, and leave gap between all the other each and dovetail groove wall, bottom surface is by the spring top clamping in dovetail groove bottom surface; The dottle pin of layer of glass material is fixed with at the root of blade with two baffle plate contact positions.
Root of blade Hexagon dovetail configuration described above is 60 ° near the angle of the bi-side of blade body.The gentle dynamical bending moment best results of centrifugal force of blade is born in the bi-side of this angle, both ensure that the centrifugal force force structure intensity of root of blade, and meet again blade carbon fiber principal direction load angle, this angle equals 150 °.
The gap that root of blade described above and dovetail groove wall leave is 3 ~ 4mm.Both leave space for the heat of blade of composite material rises, in turn ensure that join strength.
The bi-side of 30 °-90 ° are become to bear the gentle dynamical bending moment of centrifugal force of blade by the angle of root of blade dovetail configuration during blade working of the present utility model, so both ensure that the centrifugal force force structure intensity of root of blade, meet again carbon fiber principal direction load angle; Principal direction load angle is larger, and the power that principal direction can be born is larger, but the fixing reliability of root of blade and wheel hub is poorer; Principal direction load angle is less, and the power that principal direction can be born is less, but the fixing reliability of root of blade and wheel hub is higher; So 150 ° is the best angle of this angle, the bi-side angle 60 ° of root of blade is optimum efficiency, extends blade working life.Run in temperature rise process for avoiding wind-tunnel in work, due to the internal stress of the wheel hub of metallic material and the inconsistent generation of blade thermal expansion factor of composite material, gap has been reserved between the dovetail configuration and wheel hub dovetail groove of root of blade, 3 ~ 4mm is best clearance space, same extends blade working life.Simultaneously for avoiding because heat moves back the existence in gap, during start/stop of compressor, contacted the kinetic friction produced with dovetail groove on wheel hub by root of blade dovetail configuration, two and above spring-housing groove place the Compress Spring of support blade root dovetail configuration at wheel hub dovetail groove floor design, extend blade working life further.For avoiding directly contacting between the blade of composite material and metal wheel hub, at the dottle pin of root of blade dovetail configuration place design glass fibre material, improving the wear-resisting property of blade, extending its working life.For ensureing that the axial position of work Leaf relativeatoeterahub does not move, at the both ends of the surface design baffle plate of wheel hub, using bolt radial direction to tighten, improve connection reliability.The utility model eliminates the rib design on blade, and enormously simplify design procedure and the process step of blade, making is more prone to.
In a word, the linkage structure connection reliability of the utility model rotor blade and wheel hub is high, and structure is more reasonable, long service life, installs, Measuring error convenient disassembly, blade design and moulding process more simple.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is II structure for amplifying schematic diagram of Fig. 1;
Fig. 3 is plan view of the present utility model;
Fig. 4 is that the A of the individual blade of Fig. 3 is to schematic diagram;
Fig. 5 is the BB sectional view of Fig. 4;
Fig. 6 is the CC sectional view of Fig. 4;
Fig. 7 is I enlarged view of Fig. 6.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the present embodiment comprises wheel hub 2 and 16 ~ 30 composite material blades 1.The root thickness Cross section Design of blade 1 becomes Hexagon dovetail configuration, this Hexagon dovetail configuration is any angle between 30 °-90 ° near the angle of the bi-side 4 and 5 of blade 1 main body, the best is 60 °, fixes the dottle pin 3 of layer of glass material on the surface of these bi-side 4 and 5 and bottom surface 8.Wheel hub 2 evenly has the dovetail groove 9 that with the dovetail configuration of blade 1 root match identical with blade 1 number, the bottom surface of dovetail groove 9 has two and above spring-housing groove, spring 10 is placed in spring-housing groove.The dovetail configuration of blade 1 root is placed in the dovetail groove 9 of wheel hub 2, and its forward and backward both ends of the surface are fixedly clamped by by the fixing baffle plate 11 on the hub 2 of bolt 12.The dovetail configuration of blade 1 root is except the bi-side 4 being mutually 30 ° of-90 ° of angles to contact with dovetail groove 9 wall with 5, and leave gap 13 between all the other each face 6,7,8 and dovetail groove 9 walls, gap optimum size is 3 ~ 4mm; Bottom surface 8 is held out against by the spring 10 in dovetail groove 9 bottom surface.The dottle pin 3 of layer of glass material is fixed with at blade 1 root with two baffle plate 11 contact positions.
Above-described embodiment is only preferred and exemplary, and those skilled in the art can do equivalent technologies according to the spirit of this patent and improve, and these all covered by the protection domain of this patent.
Claims (3)
1. a wind-tunnel axial flow compressor fan, it comprises wheel hub and 16 ~ 30 composite material blades, it is characterized in that: the root thickness Cross section Design of blade becomes Hexagon dovetail configuration, this Hexagon dovetail configuration is 30 °-90 ° near the angle of the bi-side of blade body, fixes the dottle pin of layer of glass material on the surface of these bi-side and bottom surface; Wheel hub evenly has the dovetail groove that with the dovetail configuration of root of blade match identical with blade number, the bottom surface of dovetail groove has two and above spring-housing groove, spring is placed in spring-housing groove; The dovetail configuration of root of blade is placed in the dovetail groove of wheel hub, and the baffle plate that its forward and backward both ends of the surface are bolted on wheel hub is fixedly clamped; The dovetail configuration of root of blade is except the bi-side being mutually 30 ° of-90 ° of angles contact with dovetail groove wall, and leave gap between all the other each and dovetail groove wall, bottom surface is by the spring top clamping in dovetail groove bottom surface; The dottle pin of layer of glass material is fixed with at the root of blade with two baffle plate contact positions.
2. wind-tunnel axial flow compressor fan according to claim 1, is characterized in that: described root of blade Hexagon dovetail configuration is 60 ° near the angle of the bi-side of blade body.
3. wind-tunnel axial flow compressor fan according to claim 1 and 2, is characterized in that: the gap that described root of blade and dovetail groove wall leave is 3 ~ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783399.0U CN204458513U (en) | 2014-12-14 | 2014-12-14 | Wind-tunnel axial flow compressor fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783399.0U CN204458513U (en) | 2014-12-14 | 2014-12-14 | Wind-tunnel axial flow compressor fan |
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| Publication Number | Publication Date |
|---|---|
| CN204458513U true CN204458513U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420783399.0U Active CN204458513U (en) | 2014-12-14 | 2014-12-14 | Wind-tunnel axial flow compressor fan |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500447A (en) * | 2014-12-14 | 2015-04-08 | 惠阳航空螺旋桨有限责任公司 | Wind tunnel axial flow compressor fan |
| CN105386997A (en) * | 2015-11-27 | 2016-03-09 | 无锡市天力五金弹簧厂 | Elastic fan blade |
| CN105904901A (en) * | 2016-06-08 | 2016-08-31 | 尚艳燕 | Decorative cup |
| CN107120308A (en) * | 2016-02-25 | 2017-09-01 | 奇鋐科技股份有限公司 | Fan wheel structure of fan |
| CN109083798A (en) * | 2017-06-13 | 2018-12-25 | 国网江苏省电力公司常州供电公司 | Fluid power generation device |
| CN109139551A (en) * | 2018-09-20 | 2019-01-04 | 江门市桑尼光电科技有限公司 | It is vented fan blade and the exhaust fan with it |
-
2014
- 2014-12-14 CN CN201420783399.0U patent/CN204458513U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500447A (en) * | 2014-12-14 | 2015-04-08 | 惠阳航空螺旋桨有限责任公司 | Wind tunnel axial flow compressor fan |
| CN105386997A (en) * | 2015-11-27 | 2016-03-09 | 无锡市天力五金弹簧厂 | Elastic fan blade |
| CN107120308A (en) * | 2016-02-25 | 2017-09-01 | 奇鋐科技股份有限公司 | Fan wheel structure of fan |
| CN107120308B (en) * | 2016-02-25 | 2019-11-26 | 奇鋐科技股份有限公司 | Fan wheel structure of fan |
| CN105904901A (en) * | 2016-06-08 | 2016-08-31 | 尚艳燕 | Decorative cup |
| CN105904901B (en) * | 2016-06-08 | 2021-11-09 | 尚艳燕 | Decorative cup |
| CN109083798A (en) * | 2017-06-13 | 2018-12-25 | 国网江苏省电力公司常州供电公司 | Fluid power generation device |
| CN109083798B (en) * | 2017-06-13 | 2024-02-06 | 国网江苏省电力公司常州供电公司 | Fluid power generation device |
| CN109139551A (en) * | 2018-09-20 | 2019-01-04 | 江门市桑尼光电科技有限公司 | It is vented fan blade and the exhaust fan with it |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |