CN101696695B - Axial flow compressor serially connected by multiple single-stage axial flow fans in L-shaped arrangement - Google Patents
Axial flow compressor serially connected by multiple single-stage axial flow fans in L-shaped arrangement Download PDFInfo
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- CN101696695B CN101696695B CN2009101976443A CN200910197644A CN101696695B CN 101696695 B CN101696695 B CN 101696695B CN 2009101976443 A CN2009101976443 A CN 2009101976443A CN 200910197644 A CN200910197644 A CN 200910197644A CN 101696695 B CN101696695 B CN 101696695B
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Abstract
The invention relates to the field of fans used for closed type circular wind tunnels, in particular to an axial flow compressor formed by serially connecting by multiple fans, i.e. an axial flow compressor formed by serially connecting by multiple single-stage axial flow fans in L-shaped arrangement, comprising a casing, a fairing, an I-stage impeller, an II-stage impeller, an III-stage impeller, an IV-stage impeller and a diffuser, wherein the casing is a long pipeline with two orthogonal corners, which is arranged along the air flow direction of the wind tunnel; the whole axial flow compressor is arranged in an L shape, the diffuser is arranged behind the second corner after the fairing is arranged at the first corner; all the impellers are serially connected between the faring and the diffuser, the I-stage impeller and the II-stage impeller form a group to be connected with a first main motor through an intermediate shaft, and the III-stage impeller and the IV-stage impeller form a group to be connected with a second main motor through an intermediate shaft. The whole axial flow compressor is in L-shaped arrangement, is easy to arrange in the closed type circular wind tunnel and has low design and manufacture difficulty of the motors, consistent impeller pumping points and reliable working performance, thereby meeting the requirements on both mass flow and higher pressure ratio.
Description
Technical field
The present invention relates to the closed cycle wind-tunnel and use the blower fan field, relate in particular to a kind of axial flow compressor of many 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.
For the closed cycle wind-tunnel, axial flow compressor generally is arranged between wind-tunnel first and second turnings or behind second turning, still because be subjected to the restriction of wind-tunnel overall dimension, causes some long axial flow compressors to arrange.
Summary of the invention
Technical problem to be solved by this invention has provided the axial flow compressor that a kind of multiple single-stage axial flow fans of L shaped layout is in series, the L shaped layout of the whole one-tenth of this axial flow compressor, and the axial-flow blower of four series connection is divided into two sections, join a main motor for per two, shorten the axial dimension of axial flow compressor, can be used for the less closed cycle wind-tunnel of size.
The present invention is achieved in that the axial flow compressor that a kind of multiple single-stage axial flow fans of L shaped layout is in series, comprise casing, cowling, I level axial flow fan vane wheel, II level axial flow fan vane wheel, III level axial flow fan vane wheel, IV level axial flow fan vane wheel and Diffuser, described casing is a microscler pipeline of arranging along the tunnel airstream direction with two right angle corner, described two right angle corner are first turning and second turning, all are equipped with in first turning of casing and second turning and turn to stator; The casing of whole axial flow compressor becomes L shaped layout, after cowling is installed in first turning, after Diffuser is installed in second turning, is positioned at the tail end of casing; Along airflow direction, described I level axial flow fan vane wheel, II level axial flow fan vane wheel, III level axial flow fan vane wheel, IV level axial flow fan vane wheel in-sequence are installed between cowling and the Diffuser, wherein I, II level axial flow fan vane wheel are one group and connect the first main motor by jack shaft, and III, IV level axial flow fan vane wheel connect the second main motor for another group and by jack shaft.
Along airflow direction, described I level axial flow fan vane wheel, II level axial flow fan vane wheel, III level axial flow fan vane wheel, coaxial being arranged in turn between first turning and second turning of IV level axial flow fan vane wheel series connection, first main motor shaft is to the head that is installed in I level axial flow fan vane wheel, and second main motor shaft is to the afterbody that is installed in IV level axial flow fan vane wheel; Be furnished with stator between II level axial flow fan vane wheel and the III level axial flow fan vane wheel.
Along airflow direction, described I, coaxial being arranged in turn between first turning and second turning of II level axial flow fan vane wheel series connection, III, coaxial being arranged in turn after second turning of IV level axial flow fan vane wheel series connection, the first main motor is installed in the axial head of I level axial flow fan vane wheel, the second main motor is installed in the axial head of III level axial flow fan vane wheel, and the output shaft of the output shaft of the second main motor and the first main motor is perpendicular.
Every grade of axial flow fan vane wheel comprises a movable vane and a stator respectively, and along airflow direction, stator is arranged in after the movable vane, and the internal diameter of each movable vane is all identical with blade angle, but the external diameter of the movable vane of axial flow fan vane wheels at different levels successively decreases step by step.
The L shaped layout of the whole one-tenth of axial flow compressor of the present invention has been dwindled axial length, and the equipment that makes is easy to be arranged in the closed cycle wind-tunnel; Simultaneously two impellers are one group, configuration main motor separately respectively, make the separate unit drive motor power and the original level Four of torque ratio is coaxial reduces half, the moment of torsion that jack shaft transmits also than original minimizing half, can reduce the difficulty that manufactures and designs of motor greatly; By the hub ratio (ratio of external diameter in the impeller) that changes impeller, be that axial flow fan vane wheel internal diameters at different levels are identical, blade angle is identical, and external diameter successively decreases step by step, realize the unification of axial flow fan vane wheel pumping points at different levels, guaranteed the reliability of the performance of axial flow compressor of the present invention.The axial flow compressor that obtains has so not only satisfied big flow requirements but also has satisfied the demand of higher pressure ratio.
Description of drawings
The axial flow compressor embodiment's 1 that Fig. 1 is in series for the multiple single-stage axial flow fans of the L shaped layout of the present invention structural representation;
The axial flow compressor embodiment's 2 that Fig. 2 is in series for the multiple single-stage axial flow fans of the L shaped layout of the present invention structural representation;
Among the figure: 1 casing, 2 cowlings, 3I level axial flow fan vane wheel, 4II level axial flow fan vane wheel, 5III level axial flow fan vane wheel, 6IV level axial flow fan vane wheel, 7 Diffusers, 81 first main motors, 82 second main motors, 91 first turnings, 92 second turnings, 10 turn to stator, 11 movable vanes, 12 stators, 13 jack shafts.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's statement, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
As shown in Figure 1, the axial flow compressor that a kind of multiple single-stage axial flow fans of L shaped layout is in series, comprise casing 1, cowling 2, I level axial flow fan vane wheel 3, II level axial flow fan vane wheel 4, III level axial flow fan vane wheel 5, IV level axial flow fan vane wheel 6 and Diffuser 7, described casing 1 is a microscler pipeline of arranging along the tunnel airstream direction with two right angle corner, described two right angle corner are first turning 91 and second turning 92, all are equipped with in first turning 91 of casing 1 and second turning 92 and turn to stator 10; The casing of whole axial flow compressor becomes L shaped layout, and cowling 2 is installed in behind first turning 91, and Diffuser 7 is positioned at the tail end of casing 1 after being contained in second turning 92; Every grade of axial flow fan vane wheel comprises a movable vane 11 and a stator 12 respectively, along airflow direction, stator 12 is arranged in after the movable vane 11, the internal diameter of each movable vane 11 is all identical with blade angle, but the external diameter of the movable vane 11 of axial flow fan vane wheels at different levels successively decreases step by step, and I level axial flow fan vane wheel 3, II level axial flow fan vane wheel 4, III level axial flow fan vane wheel 5, IV level axial flow fan vane wheel 6 in-sequences are installed between cowling 2 and the Diffuser 7.
In the present embodiment, axial flow compressor becomes L shaped layout, described I level axial flow fan vane wheel 3, II level axial flow fan vane wheel 4, III level axial flow fan vane wheel 5, coaxial being arranged in turn between first turning 91 and second turning 92 of IV level axial flow fan vane wheel 6 series connection, four impellers and cowling 2 constitute L shaped one side together, and Diffuser 7 is L shaped another side; Wherein I level axial flow fan vane wheel 3 and II level axial flow fan vane wheel 4 are one group and are connected the head that first main motor 81, the first main motors 81 axially are installed in I level axial flow fan vane wheel 3 by jack shaft 13; III level axial flow fan vane wheel 5 and IV level axial flow fan vane wheel 6 are one group and are connected the afterbody that second main motor 82, the second main motors 82 axially are installed in IV level axial flow fan vane wheel 6 by jack shaft 13; Be furnished with stator 12 between II level axial flow fan vane wheel 4 and the III level axial flow fan vane wheel 5.
As shown in Figure 2, the axial flow compressor that a kind of multiple single-stage axial flow fans of L shaped layout is in series, embodiment 2 and embodiment's 1 difference is, along airflow direction, described I level axial flow fan vane wheel 3 and coaxial being arranged in turn between first turning 91 and second turning 92 of II level axial flow fan vane wheel 4 series connection, I, II level axial flow fan vane wheel and cowling 2 constitute L shaped one side together, series connection is coaxial is arranged in after second turning 92 III in turn for described III level axial flow fan vane wheel 5 and IV level axial flow fan vane wheel 6, IV level axial flow fan vane wheel and Diffuser 7 constitute L shaped another side together; Wherein I level axial flow fan vane wheel 3 and II level axial flow fan vane wheel 4 are one group and are connected first main motor 81, the first main motors 81 by jack shaft 13 and are installed in the axial head of I level axial flow fan vane wheel 3; III level axial flow fan vane wheel 5 and IV level axial flow fan vane wheel 6 are one group and are connected the second main motor 82 by jack shaft 13, the second main motor 82 is installed in the axial head of III level axial flow fan vane wheel 5, the output shaft of the output shaft of the second main motor 82 and the first main motor 81 is perpendicular, the internal diameter of each movable vane 11 is all identical with blade angle, but the external diameter of the movable vane 11 of axial flow fan vane wheels at different levels successively decreases step by step.
Claims (4)
1. the axial flow compressor that is in series of the multiple single-stage axial flow fans of a L shaped layout, it is characterized in that: comprise casing, cowling, I level axial flow fan vane wheel, II level axial flow fan vane wheel, III level axial flow fan vane wheel, IV level axial flow fan vane wheel and Diffuser, described casing is a microscler pipeline of arranging along the tunnel airstream direction with two right angle corner, described two right angle corner are first turning and second turning, all are equipped with in first turning of casing and second turning and turn to stator; The casing of whole axial flow compressor becomes L shaped layout, after cowling is installed in first turning, after Diffuser is installed in second turning, is positioned at the tail end of casing; Along airflow direction, described I level axial flow fan vane wheel, II level axial flow fan vane wheel, III level axial flow fan vane wheel, IV level axial flow fan vane wheel in-sequence are installed between cowling and the Diffuser, wherein I, II level axial flow fan vane wheel are one group and connect the first main motor by jack shaft, and III, IV level axial flow fan vane wheel connect the second main motor for another group and by jack shaft.
2. the axial flow compressor that is in series of the multiple single-stage axial flow fans of L shaped layout as claimed in claim 1, it is characterized in that: along airflow direction, described I level axial flow fan vane wheel, II level axial flow fan vane wheel, III level axial flow fan vane wheel, coaxial being arranged in turn between first turning and second turning of IV level axial flow fan vane wheel series connection, first main motor shaft is to the head that is installed in I level axial flow fan vane wheel, and second main motor shaft is to the afterbody that is installed in IV level axial flow fan vane wheel; Be furnished with stator between II level axial flow fan vane wheel and the III level axial flow fan vane wheel.
3. the axial flow compressor that is in series of the multiple single-stage axial flow fans of L shaped layout as claimed in claim 1, it is characterized in that: along airflow direction, described I, coaxial being arranged in turn between first turning and second turning of II level axial flow fan vane wheel series connection, III, coaxial being arranged in turn after second turning of IV level axial flow fan vane wheel series connection, the first main motor is installed in the axial head of I level axial flow fan vane wheel, the second main motor is installed in the axial head of III level axial flow fan vane wheel, and the output shaft of the output shaft of the second main motor and the first main motor is perpendicular.
4. the axial flow compressor that is in series as the multiple single-stage axial flow fans of the described L shaped layout of any claim in the claim 1～3, it is characterized in that: every grade of axial flow fan vane wheel comprises a movable vane and a stator respectively, along airflow direction, stator is arranged in after the movable vane, the internal diameter of each movable vane is all identical with blade angle, but the external diameter of the movable vane of axial flow fan vane wheels at different levels successively decreases step by step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101976443A CN101696695B (en) | 2009-10-23 | 2009-10-23 | Axial flow compressor serially connected by multiple single-stage axial flow fans in L-shaped arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101976443A CN101696695B (en) | 2009-10-23 | 2009-10-23 | Axial flow compressor serially connected by multiple single-stage axial flow fans in L-shaped arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN101696695A CN101696695A (en) | 2010-04-21 |
| CN101696695B true CN101696695B (en) | 2011-11-23 |
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| CN2009101976443A Expired - Fee Related CN101696695B (en) | 2009-10-23 | 2009-10-23 | Axial flow compressor serially connected by multiple single-stage axial flow fans in L-shaped arrangement |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968059A (en) * | 2010-11-01 | 2011-02-09 | 杭州洪裕重工机械有限公司 | Light fan |
| CN102900686B (en) * | 2012-09-11 | 2018-10-16 | 曾德邻 | A kind of two-dimensional array pipeline fan |
| CN103852119A (en) * | 2014-03-10 | 2014-06-11 | 西北工业大学 | Continuous wind tunnel compressor inlet flow measurement method |
| CN103852234A (en) * | 2014-03-10 | 2014-06-11 | 西北工业大学 | Surge limit measurement method for continuous transonic wind tunnel |
| CN108240342A (en) * | 2016-12-23 | 2018-07-03 | 上海鼓风机厂有限公司 | Ultra-large type two-part multistage axial flow compressor |
| CN108663188B (en) * | 2018-05-14 | 2019-05-07 | 东北大学 | It is a kind of with vibration isolation it is heat-insulated and absorb deformation function flexible support mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2896255Y (en) * | 2006-06-06 | 2007-05-02 | 刘晓萌 | Down-fitted vertical wind-tunnel of power system |
| CN101071091A (en) * | 2007-06-14 | 2007-11-14 | 同济大学 | Low frequency flutter suppression structure for open closed-circuit pneumatic-acoustic wind tunnel |
| US20070274821A1 (en) * | 2006-05-29 | 2007-11-29 | Nidec Corporation | Axial fan unit having coaxially arranged axial fans |
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2009
- 2009-10-23 CN CN2009101976443A patent/CN101696695B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070274821A1 (en) * | 2006-05-29 | 2007-11-29 | Nidec Corporation | Axial fan unit having coaxially arranged axial fans |
| CN2896255Y (en) * | 2006-06-06 | 2007-05-02 | 刘晓萌 | Down-fitted vertical wind-tunnel of power system |
| CN101071091A (en) * | 2007-06-14 | 2007-11-14 | 同济大学 | Low frequency flutter suppression structure for open closed-circuit pneumatic-acoustic wind tunnel |
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Granted publication date: 20111123 Termination date: 20191023 |