CN210089971U - Multi-fan array wind tunnel for simulating multiple extreme wind fields - Google Patents
Multi-fan array wind tunnel for simulating multiple extreme wind fields Download PDFInfo
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- CN210089971U CN210089971U CN201920549910.3U CN201920549910U CN210089971U CN 210089971 U CN210089971 U CN 210089971U CN 201920549910 U CN201920549910 U CN 201920549910U CN 210089971 U CN210089971 U CN 210089971U
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Abstract
The utility model relates to a many fans array wind-tunnel of multiple extreme wind field of simulation, including wind tower, many fans array, exhaust apparatus, rotating device and flange. The top single fan is installed at the center of the top layer of the wind tower, the single-layer first bottom single fan is installed at the bottom of the wind tower along the circumferential direction, the multiple second bottom single fans are installed on one side of the side wall of the wind tower, and the exhaust device is arranged on the other side of the side wall of the wind tower. The top single fan and the first bottom single fan are connected with the wind tower wall through the rotating device, all the single fans can achieve blowing and air suction functions, and simulation of tornadoes, downburst flows, normal winds and pulsating winds (particularly typhoons with high turbulence intensity) can be achieved. The single fan section rotates, so that the vortex ratio of a tornado and downburst storm wind field can be adjusted, and a wind column can be distorted; the pulsating wind field simulation of different turbulence characteristics can be realized by controlling the pulsation parameters of the single fan section.
Description
Technical Field
The utility model relates to a hydrodynamics technical field especially relates to a many fans array wind-tunnel.
Background
The tornado is a high-speed rotating mobile storm generated by violent air convection, and has the characteristics of short duration, large wind power, strong destructive power, difficult prediction and the like. At present, most of the physical simulation devices for the tornado laboratory are built based on the principle of the Ward type simulation system. The Ward type simulation system can simulate various tornado-like vortex wind fields, but the system has difficulty in adjusting the vortex ratio of the tornado. With the development of scientific technology, a multi-fan array wind tunnel is developed by a.nishi of the kawasaki university in japan, and the wind tunnel can mainly simulate normal wind and pulsating wind fields. The multi-fan array wind tunnel of the American IBHS research center is mainly used for simulating a typhoon wind field. The multi-fan array wind tunnel (TJ-5) of the university of Tongji in China is similar to the multi-fan array wind tunnel of the university of Kawasaki in Japan, and can mainly simulate normal wind and fluctuating wind fields. A tornado wind tunnel (windEEE Dome) of the university of Western Ann, Canada has 106 fans, adopts a regular hexagon design, and can simulate tornado and downburst storm wind fields, but the wind tunnel cannot simulate the tornado wind field with a tornado wind column which can be distorted and deformed and a variable vortex ratio. The wind tunnel simulation function of the multi-fan array is single, and the application field is limited.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention aims to provide a novel multi-fan array wind tunnel for simulating various extreme wind fields, which can simulate tornado wind, downburst, normal wind and pulsating wind (especially typhoon with high turbulence intensity) wind fields. The vortex ratio of the tornado and downburst storm wind field can be adjusted, the wind column is enabled to generate distortion deformation, and the simulation of the pulsating wind field with different turbulence characteristics can be realized.
The technical scheme is as follows: in order to achieve the purpose, the multi-fan array wind tunnel adopts the following technical scheme.
A multi-fan array wind tunnel simulating various extreme wind fields comprises a wind tower, a top single fan positioned in the center of the top of the wind tower, and a plurality of bottom single fans positioned at the bottom of the side wall of the wind tower; the top of the wind tower is provided with an opening for accommodating the top single fan, the top single fan is arranged in the opening, and the top single fan blows or inhales air inside the wind tower; two sides of the opening are provided with first rotating devices for driving the top single fan to rotate in a pitching manner;
the bottom single fans comprise a plurality of first bottom single fans and a plurality of second bottom single fans, wherein the lowest ends of the first bottom single fans are arranged in a circle along the circumferential direction of the wind tower, and the second bottom single fans are arranged in multiple rows and columns from bottom to top; the second bottom single fans are positioned on one side of the wind tower, and the other side of the wind tower is provided with an exhaust device opposite to the second bottom single fans;
and the side wall of the wind tower is also provided with second rotating devices which are in one-to-one correspondence with the first bottom single fans, and the second rotating devices drive the axial directions of the first bottom single fans to swing between the horizontal direction and the vertical direction.
Furthermore, first rotating device includes first motor, first worm gear system, first connecting piece, top single fan outside circumference is connected with the flange, first connecting piece and flange joint, and first motor forms the linkage through first worm gear system and first connecting piece, and first connecting piece rotates drive top single fan every single move through first motor and rotates.
Further, the output shaft of the first motor is coaxially connected with a worm in a first worm and gear system through a first coupler, and a worm wheel in the first worm and gear system is axially connected with the first connecting piece.
Furthermore, the second rotating device comprises an arc-shaped movable base and two supporting arms positioned on the inner sides of two ends of the arc-shaped movable base, wherein the supporting arms comprise a second motor, a second worm and gear system and a second connecting piece, and the second connecting piece is connected with the second bottom single fan; the second motor forms linkage with the second connecting piece through a second worm gear system, and the second connecting piece drives the axial direction of the first bottom single fan to swing between the vertical directions through rotation of the second motor.
Further, the output shaft of the second motor is coaxially connected with a worm in a second worm gear system through a second coupler, and a worm wheel in the second worm gear system is axially connected with the second connecting piece.
Has the advantages that: the multi-fan array wind tunnel of the utility model is provided with a top single fan, a first bottom single fan and a second bottom single fan; the top single fan can rotate in a pitching mode, and the axial direction of the second bottom single fan swings between the horizontal direction and the vertical direction, so that a tornado wind column distortion deformation and a tornado and downburst storm wind field with variable vortex ratio are simulated; the pulsating wind field simulation of different turbulence characteristics can be realized by controlling the pulsation parameters of the single fan section. Compared with the prior art, the wind tunnel with the multi-fan array has the advantages of multiple functions and wide application field.
Drawings
FIG. 1 is a schematic structural view of a wind tunnel with multiple fan arrays according to the present invention;
FIG. 2 is an assembly view of the first rotary device and the top single fan;
FIG. 3 is a schematic structural view of a first rotating device;
FIG. 4 is a schematic structural view of a second rotating device;
FIG. 5 is a view taken along line A of FIG. 4;
FIG. 6 is a schematic view of the rotating device in the fixed base;
FIG. 7 is an assembly view of a second rotating device and a second bottom single fan;
fig. 8 is a schematic diagram of the types of wind fields that can be simulated by the multi-fan array wind tunnel.
In the figure: 1. 2-1 of a wind tower, 2-2 of a top single fan, 2-3 of a first bottom single fan, 2-3 of a second bottom single fan, 3 of an exhaust device, 4 of a first rotating device, 4-1 of a first motor, 4-2 of a first coupler, 4-3 of a first worm gear system, 4-4 of a first connecting piece, 4-5 of a first bearing seat, 5 of a flange, 6 of a second rotating device, 6-1 of a fixed base, 6-2 of an arc movable base, 6-3 of a supporting arm, 6-3-1 of a second motor, 6-3-2 of a second coupler, 6-3-3 of a second worm gear system, 6-3-4 of a second connecting piece, 6-3-5 of a second bearing seat, 6-4-1 of a second motor, 6-4-2 parts of a third motor, 6-4-3 parts of a third coupler, 6-4-4 parts of a third worm gear system, 6-4-5 parts of a third connecting piece, 6-4-6 parts of a third bearing seat and a bolt.
Detailed Description
Referring to fig. 1 to 7, the present disclosure will be described in detail with reference to the accompanying drawings, wherein the preferred embodiments of the present disclosure are described in detail for the purpose of illustration and explanation, and are not intended to limit the present disclosure.
Fig. 1 shows a multi-fan array wind tunnel for simulating various extreme wind fields, which includes a wind tower 1 with a cylindrical structure, a top single fan 2 located at the center of the top of the wind tower, and a plurality of bottom single fans located at the bottom of the side wall of the wind tower 1. The top of the wind tower 1 is provided with an opening for accommodating a top single fan 2-1, the top single fan 2-1 is installed in the opening, and the top single fan 2-1 has a blowing or suction function on the interior of the wind tower 1, and the blowing or suction function is realized by the reverse rotation of a fan motor and the reverse installation of blades and a propeller hub. The two sides of the opening are provided with first rotating devices 4 for driving the top single fan 2-1 to rotate in a pitching way.
The bottom single fans comprise a plurality of first bottom single fans 2-2 and a plurality of second bottom single fans 2-3, wherein the lowest ends of the first bottom single fans are arranged in a circle along the circumferential direction of the wind tower 1, and the second bottom single fans are arranged in multiple rows and columns from bottom to top. The second bottom single fans 2-3 gather at one side of the wind tower 1, and the other side of the wind tower 1 is provided with an exhaust device 3 opposite to the second bottom single fans 2-3. The first bottom single fan 2-2 and the second bottom single fan 2-3 have air blowing and air suction functions, and are specifically realized by the reverse rotation of a fan motor and the reverse installation of blades and a hub.
The side wall of the wind tower 1 is also provided with second rotating devices 6 which are in one-to-one correspondence with the first bottom single fans 2-2, and the second rotating devices 6 drive the axial direction of the first bottom single fans 2-2 to swing between the horizontal direction and the vertical direction, so that the first bottom single fans 2-2 independently realize the effect of horizontally blowing or obliquely downward blowing to the interior of the wind tower 1.
Referring to fig. 3, the first rotating device includes a first motor 4-1, a first coupling 4-2, a first worm gear system 4-3, a first connecting member 4-4, and a first bearing seat 4-5. The outer side of the top single fan 2-1 is circumferentially connected with a flange 5, and the first connecting piece 4-4 is connected with the flange 5. An output shaft of the first motor 4-1 is coaxially connected with a worm in the first worm and gear system 4-3 through a coupler 4-2, and a worm gear in the first worm and gear system 4-3 is axially connected with the first connecting piece 4-4. The first motor 4-1 is linked with the first connecting piece 4-4 through the first worm gear system 4-3, and the first connecting piece 4-4 drives the top single fan 2-1 to rotate in a pitching mode through the rotation of the first motor 4-1.
Referring to fig. 4 and 5, the second rotating device 6 includes an arc-shaped movable base 6-2 and two supporting arms 6-3 located at the inner sides of two ends of the arc-shaped movable base 6-2. The supporting arm 6-3 comprises a second motor 6-3-1, a second coupling 6-3-2, a second worm and gear system 6-3-3, a second connecting piece 6-3-4 and a second bearing seat 6-3-5, and the second connecting piece 6-3-4 is connected with a second bottom single fan 2-3. The second motor 6-3-1 is linked with the second connecting piece 6-3-4 through the second worm gear system 6-3-3. An output shaft of the second motor 6-3-1 is coaxially connected with a worm in a second worm and gear system 6-3-3 through a second coupling 6-3-2, and a worm gear in the second worm and gear system 6-3-3 is axially connected with the second connecting piece 6-3-4. The second connecting piece 6-3-4 drives the axial direction of the first bottom single fan 2-2 to swing between the vertical directions through the rotation of the second motor 6-3-1. In the embodiment, the second rotating device further comprises a fixed base 6-1, and the arc-shaped movable base 6-2 rotates left and right on the fixed base 6-1; a base motor which drives the arc-shaped movable base 6-2 to rotate left and right, namely a third motor 6-4-1, is arranged in the fixed base 6-1.
Referring to fig. 6, the rotating device in the fixed base 6-1 includes a third motor 6-4-1, a third coupling 6-4-2, a third worm gear system 6-4-3, a third connecting member 6-4-4, and a third bearing seat 6-4-5. An output shaft of the third motor 6-4-1 is coaxially connected with a worm in a third worm gear system 6-4-3 through a third coupler 6-4-2, and a turbine in the third worm gear system 6-4-3 is axially connected with the third connecting piece 6-4-4. And the third connecting piece 6-4-4 is fixed on the arc-shaped movable base 6-2 through a bolt 6-4-6, wherein the third connecting piece 6-4-4 is a motor shaft connector standard component. The third motor 6-4-1 is linked with the third connecting piece 6-4-4 through the third worm gear system 6-4-3, and the third connecting piece 6-4-4 rotates through the third motor 6-4-1 to drive the arc-shaped movable base 6-2 to rotate left and right.
Referring to fig. 8, the wind field simulation in multiple modes, which cannot be realized in the prior art, can be realized by the wind tunnel with multiple fan arrays provided in the present invention. The following simulation modes are included:
(1) the air is sucked by the top single fan 2-1, the first bottom single fan 2-2 blows air, the exhaust device 3 is closed, air flows flow in from the bottom of the wind tower 1 and flow out from the top layer of the wind tower 1, and the simulation of a tornado wind field is realized; as shown in fig. 8 (a).
(2) Blowing air through a top single fan 2-1, sucking air through a first bottom single fan 2-2, closing an exhaust device 3, and enabling airflow to flow in from the top layer of a wind tower 1 and flow out from the bottom of the wind tower 1 to realize downdraught storm flow field simulation; as shown in fig. 8 (b).
(3) And the top single-top single fan 2-1 is driven to rotate in a pitching mode through the first rotating device 4, so that the tornado wind column is distorted and deformed, and the tornado wind field simulation of natural distortion is realized.
(4) The second rotating device 6 drives the axial direction of the first bottom single fan 2-2 to swing between the horizontal direction and the vertical direction, and the incident angle of airflow in the inflow area of the first bottom single fan 2-2 is adjusted, so that the vortex ratio of a tornado field to a downdraft storm field is adjusted;
(5) blowing air through a second bottom single fan 2-3, opening an exhaust device 3, and using the wind tunnel as a conventional multi-fan array wind tunnel to realize simulation of a normal wind field and a pulsating wind field; the pulsating wind field simulation of different turbulence characteristics is realized by controlling the pulsation parameters of the second bottom single fan 2-3; as in fig. 8(c) - (f). By controlling the pulsation parameters of the fan sections 2-3, a pulsating wind field simulation of different turbulence characteristics can be achieved, as shown in fig. 8 (f).
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A multi-fan array wind tunnel for simulating various extreme wind fields is characterized in that: the system comprises a wind tower, a top single fan positioned in the center of the top of the wind tower and a plurality of bottom single fans positioned at the bottom of the side wall of the wind tower; the top of the wind tower is provided with an opening for accommodating the top single fan, the top single fan is arranged in the opening, and the top single fan blows or inhales air inside the wind tower; two sides of the opening are provided with first rotating devices for driving the top single fan to rotate in a pitching manner;
the bottom single fans comprise a plurality of first bottom single fans and a plurality of second bottom single fans, wherein the lowest ends of the first bottom single fans are arranged in a circle along the circumferential direction of the wind tower, and the second bottom single fans are arranged in multiple rows and columns from bottom to top; the second bottom single fans are positioned on one side of the wind tower, and the other side of the wind tower is provided with an exhaust device opposite to the second bottom single fans;
and the side wall of the wind tower is also provided with second rotating devices which are in one-to-one correspondence with the first bottom single fans, and the second rotating devices drive the axial directions of the first bottom single fans to swing between the horizontal direction and the vertical direction.
2. The wind tunnel of claim 1, wherein: the first rotating device comprises a first motor, a first worm and gear system and a first connecting piece, the flange is connected to the outer side of the top single fan in the circumferential direction, the first connecting piece is connected with the flange, the first motor is linked with the first connecting piece through the first worm and gear system, and the first connecting piece drives the top single fan to rotate in a pitching mode through the rotation of the first motor.
3. The wind tunnel of claim 2, wherein: the first motor output shaft is coaxially connected with a worm in a first worm and gear system through a first coupler, and a worm wheel in the first worm and gear system is axially connected with the first connecting piece.
4. The wind tunnel of claim 1, wherein: the second rotating device comprises an arc-shaped movable base and two supporting arms positioned on the inner sides of two ends of the arc-shaped movable base, wherein the supporting arms comprise a second motor, a second worm and gear system and a second connecting piece, and the second connecting piece is connected with a second bottom single fan; the second motor forms linkage with the second connecting piece through a second worm gear system, and the second connecting piece drives the axial direction of the first bottom single fan to swing between the vertical directions through rotation of the second motor.
5. The wind tunnel of claim 4, wherein: the output shaft of the second motor is coaxially connected with a worm in a second worm gear system through a second coupler, and a worm wheel in the second worm gear system is axially connected with the second connecting piece.
6. A wind tunnel according to claim 4 or claim 5 with multiple fan arrays, wherein: the arc-shaped movable base rotates left and right on the fixed base; and a base motor for driving the arc-shaped movable base to rotate left and right is arranged in the fixed base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920549910.3U CN210089971U (en) | 2019-04-22 | 2019-04-22 | Multi-fan array wind tunnel for simulating multiple extreme wind fields |
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| CN201920549910.3U CN210089971U (en) | 2019-04-22 | 2019-04-22 | Multi-fan array wind tunnel for simulating multiple extreme wind fields |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082058A (en) * | 2019-04-22 | 2019-08-02 | 南京航空航天大学 | A kind of multi-fan array wind-tunnel that simulating a variety of extreme wind fields and simulation of wind method |
| CN113465957A (en) * | 2021-05-17 | 2021-10-01 | 中国人民解放军第六九O五工厂 | Antenna lift mast wind-resistant simulation test system |
-
2019
- 2019-04-22 CN CN201920549910.3U patent/CN210089971U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082058A (en) * | 2019-04-22 | 2019-08-02 | 南京航空航天大学 | A kind of multi-fan array wind-tunnel that simulating a variety of extreme wind fields and simulation of wind method |
| CN110082058B (en) * | 2019-04-22 | 2023-12-15 | 南京航空航天大学 | Multi-fan array wind tunnel for simulating multiple extreme wind fields and wind field simulation method |
| CN113465957A (en) * | 2021-05-17 | 2021-10-01 | 中国人民解放军第六九O五工厂 | Antenna lift mast wind-resistant simulation test system |
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