CN216978317U - Building wind tunnel device - Google Patents

Abstract

The utility model discloses a building wind tunnel device, and belongs to the technical field of building wind tunnel tests. The device includes along the air current direction intake section, stable section, shrink section, test section, diffuser, power section and the diffusion exhaust section that is linked together in proper order, is equipped with honeycomb ware and a plurality of layers of damping net in the stable section, is equipped with the carousel in the test section, and the power section includes power section anterior segment and radome fairing. The utility model has the advantages of high safety level, compact structure, small occupied area and simple operation, and can be used for simulating outdoor wind environment of cities and buildings.

Description

Building wind tunnel device

Technical Field

The utility model relates to the technical field of building wind tunnel tests, in particular to a building wind tunnel device, belongs to a building wind tunnel with a small atmospheric boundary layer, and is convenient for researchers to simulate the outdoor wind environment of cities and buildings.

Background

Wind tunnels (wind tunnels), wind tunnel laboratories, are a tunnel-like experimental facility that artificially generates and controls air flows to simulate the flow of air around an aircraft or a solid body, and that can measure the effect of the air flows on the solid body and observe physical phenomena, and are one of the most common and effective tools for aerodynamic experiments. Wind tunnel experiments are an indispensable component in aircraft development work. The method plays an important role in the research and development of aviation and aerospace engineering, and is indispensable in the fields of transportation, building construction, wind energy utilization and the like along with the development of industrial aerodynamics. The experimental method has the advantage that the flow conditions are easy to control. During experiments, the model or the real object is often fixed in a wind tunnel for repeated blowing, and experimental data is obtained through measurement and control instruments and equipment.

At present, the problem of uncomfortable wind environment is brought by the high-rise development of urban buildings, the problem can be solved through the research of wind tunnel simulation tests, and the environment simulation is a scientific means for researching the building environment and exploring the atmospheric pollution convection diffusion rule. Therefore, a building wind tunnel device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a building wind tunnel device, which is beneficial to improving the quality of airflow at a test section and controlling the uniformity of wind speed and is mainly used for simulating the outdoor wind environment of cities and buildings. The device has the characteristics of small occupied area, compact structure, simplicity in operation, high safety level and good visibility. The inlet contraction section of the utility model is provided with a honeycomb rectifier 12:1 compression ratio, which can ensure that the airflow can smoothly enter the working section and is beneficial to improving the airflow quality of the test section. Be equipped with the carousel in the test section, the workspace of test section comprises transparent acrylic acid plastic material moreover, can clearly observe the model, and the lateral wall and the top of working section have suitable template tie point, are convenient for measure the installation and the dismantlement of tube head, and sealed effect is better, can not influence measuring result.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a building wind tunnel device, includes along air inlet section, stable section, shrink section, test section, diffusion section, power section and the diffusion exhaust section that the air current direction is linked together in proper order, is equipped with honeycomb ware and a plurality of layers of damping net in the stable section, is equipped with the carousel in the test section, and the power section includes power section anterior segment and radome fairing.

The utility model provides a building wind-tunnel device, includes along the air inlet section, stable section, shrink section, test section, diffuser, power section and the diffusion exhaust section that the air current direction is linked together in proper order, be equipped with honeycomb ware and a plurality of layers of damping net in the stable section, the shrink section includes entrance and outlet section, be equipped with honeycomb ware and a plurality of layers of damping net in the stable section, be equipped with the carousel in the test section, the power section includes power section anterior segment and radome fairing.

Preferably, a protective net is arranged in the air inlet section, the air inlet section comprises an air inlet end and an air outlet end, the air outlet end is connected with the stabilizing section, and the cross section area from the air inlet end of the air inlet section to the air outlet end is gradually reduced.

Preferably, be equipped with honeycomb ware and a plurality of layers of damping net in proper order along the air current direction in the stable section, the honeycomb ware chooses for use regular hexagon's tiny net to constitute, the damping net is woven by stainless steel wire and is formed.

Preferably, the contraction section comprises an inlet section and an outlet section, the inlet section is connected with the stabilization section, and the contraction section has a contraction ratio of 12: 1.

Preferably, a rotary table is arranged in the working area of the test section, and the rotary table is circular and rotatable.

Preferably, the cross section of the diffuser section is in a trapezoid shape, a door is arranged on the diffuser section, and a safety net is arranged at the downstream end of the diffuser section.

Preferably, the power section comprises a power section front section and a fairing, and the fairing comprises a fairing front section, a fairing middle section and a fairing rear section.

The utility model has the beneficial effects that:

(1) the air flow quality of the test section is improved, the air speed uniformity of the device is improved, the turbulence degree is reduced, the air flow deflection angle is reduced, and the noise of the device is reduced through the compression ratio of the honeycomb rectifier 12:1 of the inlet contraction section.

(2) The carousel that sets up in the device test section is circular, and is rotatable to make things convenient for different wind directions to get into, satisfy the requirement that a plurality of sensors wiring hole were inserted to the bottom simultaneously.

(3) The device has the transparent working section with excellent visibility, and is convenient for a researcher to observe the process of a test. The device has high safety level, and the control equipment and the measuring instrument are arranged on an independent workbench. And the whole device can also move, so that the use convenience is improved.

Drawings

FIG. 1 is a schematic front view of the present invention;

reference numerals: 1. the device comprises an air inlet section, a stabilizing section, a honeycomb device, a damping net, a contraction section, a test section, a diffusion section, a power section, a test section, a power section front section, a power section rear section, a power section, a stabilizing section, a section 21, a honeycomb device, 22, a damping net, 3, a contraction section, a power section front section, a power section front section, 62, a fairing, a 7 and a diffusion exhaust section.

Detailed Description

The technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

As shown in FIG. 1, the building wind tunnel device disclosed by the utility model comprises an air inlet section 1, a stable section 2, a contraction section 3, a test section 4, a diffusion section 5, a power section 6 and a diffusion exhaust section 7 which are sequentially communicated along the airflow direction.

The utility model provides a building wind-tunnel device, includes along air current direction intake section, stable section, shrink section, test section, diffuser, power section and the diffusion exhaust section that is linked together in proper order, be equipped with honeycomb ware and a plurality of layers of damping net in the stable section, be equipped with the carousel in the test section, the power section includes power section anterior segment and radome fairing.

The air inlet section is internally provided with a protective net and comprises an air inlet end and an air outlet end, the air outlet end is connected with the stabilizing section, and the cross section area from the air inlet end of the air inlet section to the air outlet end is gradually reduced.

The honeycomb device is characterized in that a honeycomb device and a plurality of layers of damping nets are sequentially arranged in the stabilizing section along the airflow direction, the honeycomb device is formed by small hexagonal grids, and the damping nets are formed by weaving stainless steel wires.

The contraction section comprises an inlet section and an outlet section, the inlet section is connected with the stabilization section, and the contraction ratio of the contraction section is 12: 1.

And a turntable is arranged in the working area of the test section, and the turntable is circular and rotatable.

The cross-section of diffuser section is trapezoidal form, be equipped with the door on the diffuser section, diffuser section downstream end is equipped with the safety net.

The power section comprises a power section front section and a fairing, and the fairing comprises a fairing front section, a fairing middle section and a fairing rear section.

The specific working principle is as follows: the air inlet section 1 is in a horn shape as a whole, and is used for enlarging the contact surface of air and better enabling airflow to enter the wind tunnel system. The stabilizing section 2 is a section of equal diameter pipe, and the downstream is connected with the contraction section 3. The flow stabilizing section 2 is internally provided with rectifying equipment such as a honeycomb device 21 and a plurality of layers of damping nets 22, and the airflow is gradually stabilized after passing through the honeycomb device 21 and the damping nets 22 and attenuates the residual small vortexes, so that the airflow is kept uniform and stable. The contraction section 3 is a contraction pipeline, so that the air flow is accelerated uniformly, and when the air flow flows along the contraction section 3, the separation does not occur on the hole wall. The air flow at the outlet of the contraction section 3 is required to be uniform, straight and stable, so that the contraction section 3 is not suitable for overlong, and the length of the contraction section is suitable, so that the cost of wind tunnel construction can be reduced, and the energy loss can be reduced. The inside of the test section 4 is provided with a turntable for experimental tests, the working area of the test section 4 is made of transparent acrylic plastic materials, the model can be clearly observed, and the side wall and the top of the working section are provided with appropriate template connection points. The diffuser section 5 is a diffuser duct that allows the gas flow to be uniformly diffused. The power section 6 is arranged at the tail part of the machine, a fan is arranged in the power section, is a power source of the wind tunnel and continuously supplements energy for the airflow in the wind tunnel so as to ensure that the airflow constantly flows in the wind tunnel at a certain speed. The diffusion exhaust section 7 is mainly used for diffusion, and is beneficial to improving the flow field quality.

As shown in fig. 1, a honeycomber 21 and a plurality of layers of damping nets 22 are sequentially arranged in the stabilizing section 2 along the airflow direction, wherein the honeycomber 21 is used for guiding and dividing airflow large vortexes, which is beneficial to accelerating the attenuation of the vortexes. The cross-sectional shape of the honeycomb lattice of the honeycomb unit 21 may be selected from one of a circular shape, a rectangular shape, and a hexagonal shape, but other shapes may be selected. In specific implementation, the cross-sectional shape of the honeycomb lattice is preferably a regular hexagon.

As shown in figure 1, the turntable in the test section 4 is circular and can rotate, so that the turntable can conveniently enter in different wind directions, and the requirement that a plurality of sensor wiring holes are inserted into the bottom of the turntable is met.

As shown in fig. 1, the power section 6 includes a power section front section 61 and a fairing 62, the fairing 62 has a fairing function, and is favorable for improving the flow field quality, the fairing 62 sequentially includes a front cover, a middle cover and a tail cover along the airflow direction, and the tail cover is in a streamline bullet shape, and is favorable for improving the flow field index.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the utility model is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (7)

1. The utility model provides a building wind tunnel device, its characterized in that includes air intake section, stable section, shrink section, test section, diffusion section, power section and the diffusion exhaust section that is linked together in proper order along the air current direction, be equipped with honeycomb ware and a plurality of layers of damping net in the stable section, be equipped with the carousel in the test section, the power section includes power section anterior segment and radome fairing.

2. The building wind tunnel device according to claim 1, wherein a protective net is arranged in the air inlet section, the air inlet section comprises an air inlet end and an air outlet end, the air outlet end is connected with the stabilizing section, and the cross sectional area of the air inlet end of the air inlet section to the air outlet end is gradually reduced.

3. The wind tunnel device for buildings according to claim 1, wherein a honeycomb device and a plurality of layers of damping nets are sequentially arranged in the stabilizing section along the airflow direction, the honeycomb device is formed by regular hexagonal fine grids, and the damping nets are formed by weaving stainless steel wires.

4. The building wind tunnel device according to claim 1, wherein the convergent section comprises an inlet section and an outlet section, the inlet section is connected with the stabilizing section, and the convergent ratio of the convergent section is 12: 1.

5. The building wind tunnel device according to claim 1, wherein a turntable is arranged in a working area of the test section, and the turntable is circular and rotatable.

6. The building wind tunnel device according to claim 1, wherein the diffuser section is trapezoidal in cross section, a door is arranged on the diffuser section, and a safety net is arranged at the downstream end of the diffuser section.

7. The building wind tunnel device according to claim 1, wherein the power section comprises a power section front section and a fairing, and the fairing comprises a fairing front section, a fairing middle section and a fairing rear section.

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