CN201526473U - Axial flow compressor formed by connecting a plurality of single-stage axial flow fans in series - Google Patents
Axial flow compressor formed by connecting a plurality of single-stage axial flow fans in series Download PDFInfo
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- CN201526473U CN201526473U CN2009202112631U CN200920211263U CN201526473U CN 201526473 U CN201526473 U CN 201526473U CN 2009202112631 U CN2009202112631 U CN 2009202112631U CN 200920211263 U CN200920211263 U CN 200920211263U CN 201526473 U CN201526473 U CN 201526473U
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- axial flow
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Abstract
The utility model relates to the field of fans used for closed circulation wind tunnels, in particular to an axial flow compressor formed by connecting a plurality of single-stage axial flow fans in series, which comprises a machine shell, three or more impellers, a fairing and a diffusion cone, wherein the impellers, the fairing and the diffusion cone are arranged in the machine shell; the impellers are coaxially and progressively arranged in series; the fairing is arranged at an airflow inlet, and the diffusion cone is arranged at an airflow outlet; each stage of impeller comprises a movable impeller and a guide impeller, and after the guide impeller is fixedly arranged behind the movable impeller along the airflow direction, each stage of movable impellers are independently equipped with a main motor; the inner diameters of all stages of the movable impellers are same and adopt identical installation angles, and the outer diameters of all stages of movable impellers are progressively reduced along the airflow direction. The utility model connects a plurality of single-stage axial flow fans in series for running, thus meeting the requirement of high flow and being capable of achieving higher compression ratio; and by changing the hub ratio, the axial flow compressor realizes uniformity of surge points of all stages of impellers and ensures the running stability of the axial flow compressor.
Description
Technical field
The utility model relates to the closed cycle wind-tunnel and uses the blower fan field, relates in particular to a kind of axial flow compressor of many axial-flow blowers series connection.
Background technique
Wind-tunnel is manually to produce and to control air-flow, with flowing of simulated flight device or object ambient gas, and can measure air-flow to the effect of object and a kind of pipe-like experimental facilities of observing physical phenomenon, it is to carry out the most frequently used, the most effective instrument of aerodynamic experiment.Tunnel test is an indispensable constituent element in the aircraft development work.It not only plays an important role in the research and development of aerospace engineering, along with the development of industrial aerodynamics, also obtains application more and more widely in departments such as communications and transportation, building construction, Wind Power Utilization and environmental protection.
Will use blower fan when making wind-tunnel, existing blower fan generally comprises the motor of impeller and drives impeller, can roughly be divided into axial flow compressor and axial-flow blower.The pressure ratio that axial flow compressor can reach is bigger, and the flow that passes through is less relatively, is suitable for the duty parameter of high pressure, small flow; The flow-rate ratio that axial-flow blower can pass through is bigger, and the pressure ratio that can reach is smaller, is suitable for the duty parameter of big strength, low-pressure.Need large-scale experiment will satisfy the parameter demand that flow is big, pressure ratio is big but run into, existing axial flow compressor and axial-flow blower all have deficiency, so need a novel axial-flow blower (compressor), have both satisfied big flow, can reach higher pressure ratio again.
The model utility content
Technical problem to be solved in the utility model provides a kind of axial flow compressor of multiple single-stage axial flow fans series connection, and is the supporting independently main motor of impeller of each grade, has both satisfied big flow, can reach higher pressure ratio again.
The utility model is achieved in that the axial flow compressor that a kind of multiple single-stage axial flow fans is in series, comprise casing, three or three above impellers, cowling and diffusion awls, described impeller, cowling and diffusion awl are installed in the casing, all impeller coaxial lines are installed in series and arrange step by step, cowling is arranged in the air flow inlet place, and the diffusion awl is arranged in air flow outlet; Every grade of impeller all comprises a movable vane and a stator, stator along the airflow direction fixed and arranged after movable vane, every grade of movable vane all independently is furnished with a main motor, and movable vane internal diameters at different levels are identical and adopt identical established angle, dwindle step by step along airflow direction movable vane external diameters at different levels.
Described impeller has four.
The utility model had both satisfied big flow with the multiple single-stage axial flow fans series operation, can reach higher pressure ratio again.Every impeller is joined a main motor separately, and impeller directly is connected in motor shaft extension section, motor driving high-power, high pulling torque can be become many simple fan impellers and built-in motor and drive, and can reduce the difficulty that manufactures and designs of motor greatly.Profile IDs at different levels are identical, adopt identical established angle, successively decrease step by step along airflow direction impeller outer diameters at different levels, by changing the unification that hub ratio has realized impeller pumping points at different levels, guaranteed the stability of axial flow compressor operation.
Description of drawings
The axial flow compressor structural representation that Fig. 1 is in series for the utility model multiple single-stage axial flow fans.
Among the figure: 1 casing, 3 impellers, 31 movable vanes, 32 stators, 33 main motors, 4 cowlings, 5 diffusions awl.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiments only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model statement, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 1, the axial flow compressor that a kind of multiple single-stage axial flow fans is in series, comprise casing 1, four impellers 3, cowling 4 and diffusion awls 5, described impeller 3, cowling 4 and diffusion awl 5 are installed in the casing 1, four impeller 3 coaxial lines are installed in series and form the level Four axial flow compressor, cowling 4 is arranged in the air flow inlet place of axial flow compressor, and diffusion awl 5 is arranged in the air flow outlet of axial flow compressor; Every grade of impeller all comprises a movable vane 31 and a stator 32, and after movable vane 31, every grade of movable vane 31 all independently is furnished with a main motor 33 to stator 32 along the airflow direction fixed and arranged, by the unified control of control system; Movable vane 31 internal diameters at different levels are identical and adopt identical established angle, dwindle step by step along airflow direction movable vane 31 external diameters at different levels.
When multiple single-stage axial flow fans is connected, if select an impeller that main motor driving is all for use, will need slow-revving superhigh power drive motor, the design of this motor and manufacturing are very difficult, so in the utility model, to join a main motor separately for every impeller, impeller directly is connected in motor shaft extension section, can be with high-power, the motor driving of high pulling torque becomes many simple fan impellers and built-in motor drives, reduce the difficulty that manufactures and designs of motor greatly, and cancelled jack shaft and coupling, impellers at different levels guarantee the run-in synchronism of impellers at different levels and motor by the unified control of control system.
Because air-flow is after the compression of first order impeller, the density that enters second level impeller is bigger than first order impeller inlet, second level impeller inlet volume flow is littler than first order import, under the identical condition of first and second grade impeller size, (comprise that blade angle is identical), second level operating point is compared with the first order, moves to the small flow direction, and second level pressure coefficient increases, dwindle from characteristic curve of fan pumping point distance, promptly the both stage impellers blower fan than single-stage fan impeller pumping point in advance.Therefore, in order to guarantee the unification of impeller pumping points at different levels, operating points at different levels are dropped on the same point of performance curve, profile IDs at different levels are identical in the utility model, and impeller moving vanes at different levels adopt identical established angle, successively decrease step by step along airflow direction impeller outer diameters at different levels,, guaranteed the stability of axial flow compressor operation by changing the unification that hub ratio has realized impeller pumping points at different levels.
For axial flow compressor by the series connection of two single-stage axial flow fans, because the impeller of series connection is less, so the skimble-scamble influence of operating point is limited, when selecting impeller in order to simplify, directly select for use identical impeller to get final product, so not in limit of consideration of the present utility model.
Claims (2)
1. axial flow compressor that multiple single-stage axial flow fans is in series, it is characterized in that: comprise casing, three or three above impellers, cowling and diffusion awls, described impeller, cowling and diffusion awl are installed in the casing, all impeller coaxial lines are installed in series and arrange step by step, cowling is arranged in the air flow inlet place, and the diffusion awl is arranged in air flow outlet; Every grade of impeller all comprises a movable vane and a stator, stator along the airflow direction fixed and arranged after movable vane, every grade of movable vane all independently is furnished with a main motor, and movable vane internal diameters at different levels are identical and adopt identical established angle, dwindle step by step along airflow direction movable vane external diameters at different levels.
2. the axial flow compressor that multiple single-stage axial flow fans as claimed in claim 1 is in series is characterized in that: described impeller has level Four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202112631U CN201526473U (en) | 2009-10-23 | 2009-10-23 | Axial flow compressor formed by connecting a plurality of single-stage axial flow fans in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202112631U CN201526473U (en) | 2009-10-23 | 2009-10-23 | Axial flow compressor formed by connecting a plurality of single-stage axial flow fans in series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526473U true CN201526473U (en) | 2010-07-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202112631U Expired - Lifetime CN201526473U (en) | 2009-10-23 | 2009-10-23 | Axial flow compressor formed by connecting a plurality of single-stage axial flow fans in series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526473U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606500A (en) * | 2012-04-11 | 2012-07-25 | 上海飞和压缩机制造有限公司 | Aerotechnical air-concentrated high-yield air compressor with stepped shell and helical blade |
| CN103032348A (en) * | 2013-01-08 | 2013-04-10 | 张建中 | Axial flow type fluid supercharger with independent adjustable moving plate |
| CN108105150A (en) * | 2017-12-26 | 2018-06-01 | 沈阳透平机械股份有限公司 | Wind tunnel compressor rotor assembling method |
| CN111912596A (en) * | 2020-07-27 | 2020-11-10 | 西北工业大学 | Small-sized straight-flow wind tunnel diffusion section with ultra-long fairing and annular separation-preventing net |
| CN113740021A (en) * | 2021-08-27 | 2021-12-03 | 大连透平机械技术发展有限公司 | Centrifugal compressor performance test experiment table |
-
2009
- 2009-10-23 CN CN2009202112631U patent/CN201526473U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606500A (en) * | 2012-04-11 | 2012-07-25 | 上海飞和压缩机制造有限公司 | Aerotechnical air-concentrated high-yield air compressor with stepped shell and helical blade |
| CN103032348A (en) * | 2013-01-08 | 2013-04-10 | 张建中 | Axial flow type fluid supercharger with independent adjustable moving plate |
| CN108105150A (en) * | 2017-12-26 | 2018-06-01 | 沈阳透平机械股份有限公司 | Wind tunnel compressor rotor assembling method |
| CN111912596A (en) * | 2020-07-27 | 2020-11-10 | 西北工业大学 | Small-sized straight-flow wind tunnel diffusion section with ultra-long fairing and annular separation-preventing net |
| CN113740021A (en) * | 2021-08-27 | 2021-12-03 | 大连透平机械技术发展有限公司 | Centrifugal compressor performance test experiment table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100714 |