CN114279672A - Intensive wind tunnel structure capable of changing wind speed in layering manner - Google Patents
Intensive wind tunnel structure capable of changing wind speed in layering manner Download PDFInfo
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- 238000012360 testing method Methods 0.000 claims abstract description 88
- 238000009423 ventilation Methods 0.000 claims abstract description 20
- 238000009792 diffusion process Methods 0.000 claims abstract description 18
- 230000008602 contraction Effects 0.000 claims abstract description 12
- 230000006641 stabilisation Effects 0.000 claims abstract description 8
- 238000011105 stabilization Methods 0.000 claims abstract description 8
- 238000013016 damping Methods 0.000 claims description 39
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- 241000264877 Hippospongia communis Species 0.000 description 25
- 238000000034 method Methods 0.000 description 9
- 238000009826 distribution Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
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- 239000012141 concentrate Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The invention relates to the technical field of wind tunnel equipment, and provides an intensive wind tunnel structure capable of changing wind speed in a layering way, which comprises: the dynamic section, the diffusion section, the stabilization section, the contraction section and the test section are connected in sequence; a plurality of rows of fan sets are arranged in the power section along the length direction, each fan set comprises a plurality of fans, and the fans are distributed in an array manner along the radial direction; the fan is controlled by the controller; and a ventilation pipe is arranged on the inner wall of the power section and between two adjacent rows of fan sets, and the ventilation pipe is provided with a plurality of air channels corresponding to the fans. The invention can produce the incoming wind with different characteristics in special test environment, the wind speed adjusting range is wider, and the accuracy of test data is higher; and overall structure can be dismantled, is convenient for install in different experimental environment.
Description
Technical Field
The invention relates to the technical field of wind tunnel equipment, in particular to an intensive wind tunnel structure capable of changing wind speed in a layering mode.
Background
The wind tunnel is a pipeline-shaped experimental device which is used for generating and controlling airflow in an artificial mode, is mainly used for simulating the flowing condition of air around an aircraft or a solid body and can measure the action effect of the solid body on the airflow, and is used for researching aerodynamics. Because natural observation is limited by various factors such as time, wind power, earth surface and the like, the aerodynamic condition of a research object is difficult to carry out systematic and deep research, and the problems can be well solved by using the wind tunnel. However, the existing wind tunnel has large overall mass, and is inconvenient to integrally assemble, disassemble and build during testing. And the wind tunnel power section is generally provided with a large fan, so that the wind tunnel power section has the advantages of single driving mode, high energy consumption, smaller wind speed adjusting range and single adjusting mode, and cannot adapt to diversified test requirements. Therefore, the wind tunnel structure which is simple to disassemble and assemble, can meet the requirements of wind speeds with different characteristics and different ranges and is low in energy consumption is designed to solve the problem that needs to be solved urgently at present.
Disclosure of Invention
The invention provides an intensive wind tunnel structure capable of changing wind speed in a layering way, which can be used for manufacturing incoming wind with different characteristics in a special test environment, has wider wind speed adjusting range and higher test data accuracy; and overall structure can be dismantled, is convenient for install in different experimental environment.
The invention provides an intensive wind tunnel structure capable of changing wind speed in a layering way, which comprises: the dynamic section, the diffusion section, the stabilization section, the contraction section and the test section are connected in sequence; a plurality of rows of fan sets are arranged in the power section along the length direction, each fan set comprises a plurality of fans, and the fans are distributed in an array manner along the radial direction; the fan is controlled by the controller; and a ventilation pipe is arranged on the inner wall of the power section and between two adjacent rows of fan sets, and the ventilation pipe is provided with a plurality of air channels corresponding to the fans.
According to the intensive wind tunnel structure capable of changing wind speed in a layered mode, a filter screen is arranged in the power section and is arranged at the wind inlet end of the fan unit.
According to the intensive wind tunnel structure capable of changing wind speed in a layering manner, a first damping net, a honeycomb device and a second damping net are sequentially arranged in the stabilizing section at intervals along the length direction.
According to the intensive wind tunnel structure capable of changing wind speed in a layering mode, the spacing distances between the first damping net and the honeycomb device and between the honeycomb device and the second damping net are 50-100 cm respectively.
According to the intensive wind tunnel structure capable of changing wind speed in a layering mode, the honeycomb device comprises a plurality of regular hexagonal ventilation holes with the diameter of an outer circle being 10-30 mm.
According to the intensive wind tunnel structure capable of changing the wind speed in a layered mode, which is provided by the invention, the fan sets comprise two rows, and each row of fan sets comprises fans distributed in three rows and three columns.
According to the intensive wind tunnel structure capable of changing wind speed in a layering mode, the wind tunnel structure is a detachable connection structure.
According to the intensive wind tunnel structure capable of changing wind speed in a layered mode, the test section comprises a plurality of test cabins which are detachably connected, the test cabins are surrounded by baffles, and the baffles at the bottoms of the test cabins are detachable.
The intensive wind tunnel structure capable of changing wind speed in a layering mode further comprises an outlet diffusion section, and the outlet diffusion section is detachably connected with the test section.
According to the intensive wind tunnel structure capable of changing wind speed in a layering mode, the bottom of the power section is provided with the heightening base, and the bottoms of the stabilizing section, the contraction section, the test section and the outlet diffusion section are provided with the supporting seats.
According to the intensive wind tunnel structure capable of changing wind speed in a layered mode, the power section, the diffusion section, the stabilization section, the contraction section and the test section are sequentially connected, so that the wind condition in the field can be well simulated, the stable laminar flow in layered distribution is provided, and the accuracy of test data is improved; the fans of the power section are distributed in a multi-row, multi-column and multi-row mode, intensive air speed adjustment is achieved through the controller, each fan can perform independent air speed control, incoming air with different characteristics in a special test environment is manufactured, the thickness of the boundary layer in the test process is larger, and the air speed adjustment range is wider; compared with the traditional wind tunnel which adopts a power section of a single large fan, the wind tunnel provided by the invention is provided with a plurality of small fans according to the wind tunnel inlet, the single body is lighter in weight, and the whole energy consumption is lower under the same test condition; in addition, the whole wind tunnel adopts a module sectional type detachable design, so that the wind tunnel is convenient to disassemble, assemble and build on site without the assistance of large machinery in the using process.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the related art, the drawings needed to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of an intensive wind tunnel structure with a layered variable wind speed according to the present invention;
FIG. 2 is a schematic structural view of a fan unit provided by the present invention;
FIG. 3 is a schematic cross-sectional view of a vent provided by the present invention;
FIG. 4 is a schematic structural view of a first damping mesh and a second damping mesh provided by the present invention;
FIG. 5 is a schematic structural diagram of a honeycomb structure provided by the present invention;
FIG. 6 is one of the schematic cross-sectional structural views of the test section provided by the present invention;
FIG. 7 is a second schematic view of an intensive wind tunnel structure with layered variable wind speed according to the present invention;
FIG. 8 is a second schematic cross-sectional view of a test section provided by the present invention;
reference numerals:
1: a fan unit; 101: a fan; 2: a vent pipe; 201: an air duct; 3: a filter screen;
4: a first damping mesh; 5: a cellular device; 6: a second damping mesh; 7: a test chamber;
8: a baffle plate; 9: a subject of study; 10: heightening the base; 11: a supporting seat;
i: a power section; II: a diffuser section; III: a stabilization section; IV: a contraction section;
v: a test section; VI: an outlet diffuser section.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The intensive wind tunnel structure capable of changing wind speed in a layering way is described in the following with the accompanying drawings. Where reference herein to "a plurality of rows" is to be understood as: at least two rows, at least two.
According to an embodiment of the present invention, as shown in fig. 1 to 8, the intensive wind tunnel structure capable of changing wind speed in a layered manner provided by the present invention mainly includes: the device comprises a power section I, a diffusion section II, a stabilization section III, a contraction section IV and a test section V which are sequentially connected. Wherein, set up multirow fan group 1 along length direction in the power section I, fan group 1 includes a plurality of fans 101, a plurality of fans 101 are the array distribution along radially, can provide the incoming air flow of different wind speeds according to the experimental requirement, power section I is used for producing the air current that flows promptly, diffuser section II is used for integrating the multibeam air current that I a plurality of fans 101 of power section produced, stabilizer section III is used for stabilizing the air current after the integration, the steady state laminar flow that provides the layering distribution, the contraction section IV is used for improving the air current velocity of flow, be convenient for get into test section V fast, improve test efficiency, test section V is used for placing research object 9 and carries out experimental study. The wind tunnel structure can well simulate the field wind condition by arranging the working sections, provide the stable laminar flow with layered distribution, and further improve the accuracy of test data.
The wind tunnel structure still includes the controller (not shown in the figure), and multirow fan group 1 links to each other with a controller, and fan 101 can be controlled alone to the controller, also can the unified control fan group 1, and the controller links to each other with each fan 101 of fan group 1 promptly, can concentrate through the controller and carry out independent or unified control to a plurality of fans 101, realizes the unified management and control of intensive formula.
The wind tunnel structure still includes ventilation pipe 2, and ventilation pipe 2 sets up in the inner wall of power section I and is located between two adjacent rows of fan group 1, and ventilation pipe 2 is equipped with a plurality of wind channels 201 that correspond with a plurality of fans 101, that is to say, the wind channel 201 of ventilation pipe 2 and the setting mode and the quantity one-to-one of fan 101 also are array distribution. The draught fans 101 in two adjacent rows are connected through the ventilation pipes 2, so that airflow generated by different draught fans 101 can be separated and guided conveniently, the influence of the airflow with different wind speeds on each other is avoided, the incoming airflow meeting the test conditions can be accurately manufactured, and the test accuracy is effectively improved.
Therefore, the intensive wind tunnel structure capable of changing wind speed in a layered manner provided by the embodiment of the invention can well simulate field wind conditions and provide stable laminar flow in layered distribution by arranging the power section I, the diffusion section II, the stabilization section III, the contraction section IV and the test section V which are sequentially connected, so that the accuracy of test data is improved; in addition, the fans 101 of the power section I are distributed in a multi-row and multi-column multi-row mode, intensive air speed adjustment is achieved through the controller, each fan 101 can perform independent air speed control, incoming air with different characteristics in a special test environment is manufactured, the thickness of a boundary layer in the test process is larger, and the air speed adjustment range is wider; compared with the traditional wind tunnel which adopts a power section of a single large fan, the wind tunnel is divided into a plurality of small fans 101 according to the wind tunnel inlet, the single body is lighter in weight, and the overall energy consumption is lower under the same test condition.
According to the embodiment of the invention, as shown in fig. 1, the cross sections of the power section i, the stabilizing section iii and the testing section v are constant, the cross section is generally square, the cross section of the diffuser section ii is gradually increased along the wind direction, the cross section of the contraction section iv is gradually decreased along the wind direction, the cross section can be the shape shown in the figure, specifically, the upper side of the contraction section iv is gradually reduced, and the lower side is constant, so that the power section i, the stabilizing section iii and the testing section v are conveniently installed on the supporting seat 11.
According to the embodiment of the invention, as shown in fig. 1, a filter screen 3 is arranged in the power section i, and the filter screen 3 is arranged at the air inlet end (front end) of the fan unit 1, and is mainly used for filtering impurities in air flow and preventing the impurities from entering the wind tunnel structure, so that on one hand, a plurality of fans 101 of the fan unit 1 can be protected, and the impurities are prevented from being clamped into the fans 101 to cause damage; on the other hand, the uniformity of the airflow entering the wind tunnel structure can be improved, and the accuracy of the test is further improved.
According to the embodiment of the invention, as shown in fig. 1, the inner wall of the stabilizing section iii is provided with a first damping net 4, a honeycomb device 5 and a second damping net 6 at intervals in sequence along the length direction. The first damping net 4 is mainly used for reducing the unevenness and turbulence of the air flow, and can also play a role in secondary filtration and protection of the honeycombs 5 so as to prevent the honeycombs 5 from being damaged; the honeycomb device 5 has a certain thickness and is mainly used for rectifying and straightening the airflow passing through the first damping net 4 to ensure that the airflow is smooth and stable; the second damping network 6 is mainly used to further stabilize the air flow, reduce the air flow unevenness and turbulence, and protect the honeycomb 5. Therefore, the first damping net 4, the honeycomb device 5 and the second damping net 6 are arranged in sequence, so that the smoothness and the stability of the airflow can be effectively improved.
According to the embodiment of the present invention, as shown in fig. 4, the first damping net 4 and the second damping net 6 have the same structure, and each of the first damping net 4 and the second damping net 6 includes a frame and a wire mesh disposed on the frame, the frame is disposed on the inner wall of the stabilizing section iii, and the wire mesh has a plurality of vent holes.
In an actual test working condition, when the spacing distance between the first damping net 4, the honeycomb device 5 and the second damping net 6 is set to be too large, the flow stabilizing effect of the first damping net 4, the honeycomb device 5 and the second damping net 6 is poor, even the flow stabilizing effect cannot be achieved, so that the incoming flow is disordered, and the error of a test result is large; when the spacing distance between the first damping net 4, the honeycomb device 5 and the second damping net 6 is too small, the first damping net 4 and the second damping net 6 on the two sides cannot play a role, only the honeycomb device 5 plays a role, similarly, the steady flow effect is poor, the incoming flow is disordered, and the error of the test result is large. According to the invention, the spacing distances between the first damping net 4 and the honeycomb device 5 and between the honeycomb device 5 and the second damping net 6 are respectively set to be 50-100 cm, so that the first damping net 4, the honeycomb device 5 and the second damping net 6 can have good step-by-step progressive rectification effect, the smoothness and stability of incoming flow are effectively increased, and the test accuracy is further improved.
According to the embodiment of the invention, as shown in fig. 5, the honeycomb device 5 comprises a frame and a ventilation net, the frame is arranged on the inner wall of the stabilizing section iii, and the ventilation net is provided with a plurality of regular hexagonal ventilation holes with the circumscribed circle diameter of 10-30 mm, so that the rectification is facilitated, the smaller the ventilation holes are, the better the rectification effect is, but the higher the manufacturing process requirement is, the larger the wind resistance is.
According to the embodiment of the invention, the thickness of the honeycomb device 5 is 10-15 cm, correspondingly, the regular hexagonal vent holes are changed into vent channels with a certain length, when incoming flow passes through the honeycomb device 5, rectification can be performed in the vent channels for a certain time, and the rectification effect is further improved, wherein the longer the length of the honeycomb device 5 is, the thicker the honeycomb device is, the better the rectification and flow guide effects are, but the larger the wind energy attenuation is.
According to the embodiment of the invention, the first damping net 4, the honeycomb device 5 and the second damping net 6 can be arranged at different positions of the wind tunnel structure stabilizing section III according to actual working conditions.
In an embodiment of the present invention, as shown in fig. 1 and fig. 2, the fan set 1 includes two rows, and each exhaust fan set 1 includes fans 101 distributed in three rows and three columns, so that the wind speed can be adjusted and the boundary layer thickness can be increased; specifically, the method comprises the following steps: the thickness of the boundary layer is only 15cm from the original 1m high wind tunnel to be extended to the thickness of the boundary layer of 25 cm from the original 90 cm high wind tunnel, namely the thickness of the boundary layer can be effectively improved on the premise of reducing the height of the wind tunnel.
Correspondingly, as shown in fig. 3, the air duct 201 of the ventilation pipe 2 may be consistent with the arrangement of the fans 101 according to the use requirement, and a multi-row and multi-column arrangement manner is adopted, that is, the ventilation pipe 2 is provided with square air ducts 201 arranged in three rows and three columns.
According to the embodiment of the invention, the whole wind tunnel structure is of a detachable connection structure, namely, all the working sections of the wind tunnel structure are detachably connected, and a module sectional detachable design is adopted, so that the wind tunnel structure does not need the assistance of large machinery in the use process, and is convenient to disassemble, assemble and build on the spot in different test environments.
It should be understood that, in the related art, the wind tunnel structure is an integral structure, and when a certain working section of the wind tunnel structure is damaged, the whole wind tunnel cannot be used; by arranging the detachable multi-section structure, when a certain working section is damaged, only the section needs to be replaced, and the whole wind tunnel structure can be repeatedly used for a long time, so that the cost is saved.
According to the embodiment of the invention, as shown in fig. 1 and fig. 6, the test section V comprises a plurality of detachably connected test chambers 7, the test chambers 7 are surrounded by baffle plates 8, and the baffle plates 8 at the bottoms of the test chambers 7 are detachable, so that the baffle plates 8 can be detached according to indoor or outdoor use requirements. For example: the test chamber 7 with the bottom baffle 8 removed can be directly covered on a field study object 9 to ensure the integrity of the study object 9, as shown in fig. 8.
According to the embodiment of the invention, as shown in fig. 1, the wind tunnel structure further comprises an outlet diffusion section VI, the outlet diffusion section VI is detachably connected with the test section V, and the tested air flow is discharged through the outlet diffusion section VI. The sectional area of the outlet diffusion section VI is gradually increased along the wind direction, the sectional shape can be the shape shown in the figure, specifically, the upper side of the outlet diffusion section VI is gradually expanded, and the lower side is constant, so that the outlet diffusion section VI can be conveniently installed on the supporting seat 11.
According to the embodiment of the invention, the height-adjusting base 10 is arranged at the bottom of the power section I, the height position of the power section I is adjusted according to the use and installation requirements, and the influence on the installation of the diffusion section II is avoided; the bottom of stabilizing section III, contraction section IV, test section V and export diffuser VI can be dismantled and be equipped with supporting seat 11, and it can be understood that supporting seat 11 can be one, corresponds and supports above-mentioned each working section, also can set up supporting seat 11 respectively in above-mentioned each working section bottom that corresponds, specifically can design according to operating condition. As shown in fig. 1, when the wind tunnel structure is used in an indoor environment, a support seat 11 is arranged at the bottom of each working section, and the whole wind tunnel structure is convenient to assemble by adjusting a height-adjusting base 10 of a power section i; as shown in fig. 7, when the wind tunnel structure is used in a field environment, the supporting seat 11 can be removed, and the power section i is supported by adjusting the height-adjustable base 10 of the power section i, so that the diffusion section ii and other working sections can be located on the ground, and the wind tunnel structure can be assembled conveniently on the premise of not affecting the research object 9.
The working principle of the intensive wind tunnel structure capable of changing wind speed in a layering manner provided by the invention is described below, and the intensive wind tunnel structure mainly comprises an indoor test environment and a field test environment.
And (4) indoor test: as shown in fig. 1, in this embodiment, when the wind tunnel structure is used in an indoor environment, the whole wind tunnel structure is installed on a height-adjusting base 10 and a support base 11, external air is firstly filtered by a filter screen 3 at the front end of a power section i and enters a front row of fan sets 1, the front row of fan sets 1 accelerates, the accelerated air flow is conveyed to a rear row of fan sets 1 by a ventilation pipe 2 connected with the front row of fan sets for secondary acceleration, a plurality of air flows are integrated by a diffusion section ii and then sequentially pass through a first damping net 4, a honeycomb device 5 and a second damping net 6 of a stabilization section iii to increase the smoothness and stability of the incoming air flow, and then rapidly enter a test section v by a compression section iv, the cross-sectional structure of the test section v in the test process is shown in fig. 6, a research object 9 for test is fixed on a baffle plate 8 at the bottom of the test chamber 7, and a test is carried out in the test section v, the gas flow is finally discharged from the outlet diffuser section vi.
In the test process, the independent adjustment or the integral adjustment of different exhaust fans 101 in different rows and different columns can be realized, and the incoming wind requirements with different characteristics in the test environment are met.
And (3) field test: as shown in fig. 7, in this embodiment, based on the above embodiment, the whole wind tunnel structure is moved to the field for testing, before the test, the baffle 8 at the bottom of the test compartment 7 of the test section v needs to be removed, so that the object 9 is placed in the test compartment 7 of the test section v without being affected, as shown in fig. 8. The quantity of test cabins 7 in the test section V is increased or decreased according to test requirements, different test length requirements are met, the different working sections of the wind tunnel structure are sequentially assembled, and other different working sections can be located on the ground by adjusting the height-adjusting base 10 of the power section I, so that the overall building of the field wind tunnel structure is completed.
In the test process, the fan 101 is driven to rotate by an external power supply, a field wind tunnel test is carried out, and after the test is finished, all working sections are sequentially disassembled and separated, so that preparation is made for the next field wind tunnel test.
In conclusion, the intensive wind tunnel structure capable of changing wind speed in a layering manner can well simulate field wind conditions and provide steady laminar flow in a layering manner, so that the accuracy of test data is improved; the wind with different characteristics in a special test environment can be produced, the thickness of the boundary layer in the test process is larger, the wind speed adjusting range is wider, and the overall energy consumption is lower; in addition, the whole detachable design of module sectional type that adopts of wind-tunnel is convenient for dismouting on the spot and is built, adapts to different test environment.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An intensive wind tunnel structure capable of changing wind speed in a layering manner is characterized by comprising:
the dynamic section, the diffusion section, the stabilization section, the contraction section and the test section are connected in sequence;
a plurality of rows of fan sets are arranged in the power section along the length direction, each fan set comprises a plurality of fans, and the fans are distributed in an array manner along the radial direction;
the fan is controlled by the controller;
and a ventilation pipe is arranged on the inner wall of the power section and between two adjacent rows of fan sets, and the ventilation pipe is provided with a plurality of air channels corresponding to the fans.
2. The intensive wind tunnel structure capable of changing wind speeds in a layering manner according to claim 1, wherein a filter screen is arranged in the power section, and the filter screen is arranged at a wind inlet end of the fan unit.
3. The intensive wind tunnel structure capable of changing wind speeds in layers according to claim 1, wherein a first damping net, a honeycomb device and a second damping net are sequentially arranged in the stabilizing section at intervals along the length direction.
4. The intensive stratified variable wind speed wind tunnel structure according to claim 3, wherein the spacing distances between the first damping net and the honeycomb device and between the honeycomb device and the second damping net are respectively 50-100 cm.
5. The intensive stratified variable wind speed wind tunnel structure according to claim 3, wherein the honeycomb device comprises a plurality of regular hexagonal ventilation holes with the circumscribed circle diameter of 10-30 mm.
6. The intensive scalable variable wind speed wind tunnel structure according to claim 1, wherein the fan sets comprise two rows, each row comprising three rows and three columns of fans.
7. The intensive stratifiable wind-tunnel structure of variable wind speed according to claim 1, wherein the wind-tunnel structure is a detachable connection structure.
8. The intensive stratified variable wind speed wind tunnel structure according to claim 1, wherein the test section comprises a plurality of detachably connected test chambers, the test chambers are surrounded by baffles, and the baffles at the bottom of the test chambers are detachable.
9. The intensive stratifiable wind tunnel structure of claim 1-8, further comprising an outlet diffuser section, wherein the outlet diffuser section is detachably connected to the test section.
10. The intensive wind tunnel structure capable of changing wind speeds in a layering manner according to claim 9, wherein a height-adjusting base is arranged at the bottom of the power section, and supporting seats are arranged at the bottoms of the stabilizing section, the contracting section, the testing section and the outlet diffusing section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111501567.3A CN114279672A (en) | 2021-12-09 | 2021-12-09 | Intensive wind tunnel structure capable of changing wind speed in layering manner |
| NL2031796A NL2031796B1 (en) | 2021-12-09 | 2022-05-08 | Intensive wind tunnel structure with stratified variable wind speed |
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| CN202111501567.3A CN114279672A (en) | 2021-12-09 | 2021-12-09 | Intensive wind tunnel structure capable of changing wind speed in layering manner |
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| CN117782509A (en) * | 2024-02-27 | 2024-03-29 | 中国空气动力研究与发展中心低速空气动力研究所 | Fixing assembly of icing wind tunnel replaceable test device |
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| CN117782509A (en) * | 2024-02-27 | 2024-03-29 | 中国空气动力研究与发展中心低速空气动力研究所 | Fixing assembly of icing wind tunnel replaceable test device |
| CN117782509B (en) * | 2024-02-27 | 2024-04-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Fixing assembly of icing wind tunnel replaceable test device |
Also Published As
| Publication number | Publication date |
|---|---|
| NL2031796A (en) | 2023-06-26 |
| NL2031796B1 (en) | 2023-12-08 |
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