CN111855128A

CN111855128A - Tornado simulator

Info

Publication number: CN111855128A
Application number: CN201910899085.4A
Authority: CN
Inventors: 王浩; 郎天翼; 张寒; 徐梓栋; 梁旭东
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-10-30
Anticipated expiration: 2039-09-23
Also published as: CN111855128B

Abstract

The invention discloses a tornado simulator, which comprises an electromechanical transmission air control device, an air supply pipeline, an inflow connecting port, a tornado generating space and an outflow surface. The wind control device is composed of a servo motor and a blower, the servo motor is controlled by compiling a speed function, the relation between the motor speed and the wind speed is established, the wind speed is ensured to be input into the wind supply pipeline according to a preset mode, and the inflow wind in all directions is accurately controlled. The inflow connecting port can flexibly rotate, and inflow air can flow into the tornado generating space in multiple angles. The tornado generation space is formed by splicing transparent organic glass (PMMA) materials, the installation and the disassembly are simple and convenient, and meanwhile, an experimenter can visually observe the wind field condition by penetrating through the organic glass. The simulated tornado wind field environment can meet the requirements of engineering tests, and the defects that the conventional artificial tornado simulator is large in size, not easy to move and not easy to change the size are overcome.

Description

Tornado simulator

Technical Field

The invention relates to a tornado simulator, in particular to a tornado simulator which is convenient, detachable, controllable in inflow wind and capable of observing an inner space.

Background

The tornado is a funnel-shaped vortex appearing in a strong convection cloud, and has strong destructive power and remarkable characteristics. It is a storm with central vortex, great speed, spiral rising, accompanied by hail, lightning, heavy rainfall and other extreme weather, which can cause great damage to the infrastructure and buildings, resulting in casualties. In China, about dozens of tornadoes occur every year, the tornadoes can be observed in the eastern area and the Guangdong area of China, the duration of the tornadoes in China is short, about ten minutes, and the moving path is between hundreds of meters and thousands of meters. During normal use of buildings and infrastructure, there is a low probability of being hit by tornadoes, but once tornadoes occur, life and property loss is caused, and the consequences are serious.

The accuracy of the existing means for tornado prediction is very low, and the duration of Chinese tornado generation is short, so that the real conditions cause that the tornado cannot be effectively tracked and valuable data are acquired. And the judgment means and disaster assessment of the tornadoes are mainly carried out after disasters, when the tornadoes occur, the determination and continuous tracking of the conventional meteorological radar on the tornadoes are weak, and meanwhile, the intuitive observation of the tornadoes has certain dangerousness. Therefore, experimental studies and numerical simulations have become the main means and means for our understanding of the study of tornadoes. The experimental study has authenticity, intuition and comprehensiveness, and is an indispensable part in engineering study.

Most of the existing tornado simulators are in Ward type as prototype and are composed of a fan generating ascending air flow and a guide plate generating rotary air flow, and a wind field which rotates to ascend and has tangential speed and radial speed is generated in a tornado generating space. However, the existing Ward simulator is mainly realized by the movement of the generator or the bottom bearing platform in the horizontal movement of the simulated tornado, is not really a vortex active movement, has few changeable parameters and cannot observe the condition of the internal space.

In order to further research the effect of tornadoes on buildings and infrastructure, and also to improve the internal observation and monitoring of the existing tornado simulator in a mode of simulating mobile tornadoes, a new solution needs to be developed objectively.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects of the conventional tornado simulator in the mode of simulating and moving tornados and break through the limitations that the tornado simulator cannot be observed visually and the like, the invention provides the tornado simulator which can be flexibly installed and detached, is transparent and visible and can be changed in size at will so as to be conveniently used for engineering experiments to research the wind field characteristics of the tornados and the effect of the tornados on the structure.

The invention relates to a tornado simulator convenient to construct and visualize, which comprises an air blower controlled by a servo motor, an inflow port with an adjustable angle, an organic glass shell and an air outlet with a rotatable and lateral top. A blower linked with a controllable motor is used for forming a function editing controllable wind speed; the condition of a tornado wind-forming area is visually observed through transparent organic glass; placing pigment powder at the bottom of the platform to form colored tornado; the construction and assembly are simple and easy to realize by the connection mode of the jointed boards; the movable outflow opening is formed by a rotationally movable outflow panel. The wind field is monitored in real time by adopting a TFI cobra probe to collect wind data in a tornado generating space.

The adjustable servo motor is connected with the air blower, and the controllable air speed can be obtained. Firstly, the relation between the rotating speed and the air speed of the air blower is found, a functional relation is established, the speed function of the servo motor is compiled by considering the conversion relation between the rotating speed and the air speed, and the inflow air speed with controllable speed is obtained.

At the air inlet, the air inlet pipe is flexibly connected with the tornado generating space, the angle of the air inlet pipe can be regulated, and the angle of inflow air can be regulated. Because the tornado simulator is mainly formed by splicing organic glass plates, each air inlet pipe represents an inflow surface, and the polygonal prism is approximately fitted to a cylinder, the inflow surface of the polygonal prism with adjustable angle and speed is approximately a cylindrical surface with adjustable speed.

The tornado takes place the space and comprises two parts, and one is the inflow region of bottom, and the emergence region in the middle of the other, the shell of whole mechanism mainly is formed by the organic glass concatenation, vertical direction by hinge connection, horizontal plate spare and vertical plate are connected by the angle bar, and the gap between the plate is closely knit by the foamer, is convenient for be under construction and clearance, is fit for repetitious application.

The bottom of the tornado generating space is provided with the pigment powder, the pigment powder flows along with the wind field under the action of the wind field and presents a spirally rising color state, and the tornado generator is mainly formed by connecting transparent organic glass, so the morphological characteristics of the tornado can be directly observed from the outside.

And a TFI cobra probe is adopted in the tornado generating space to acquire data of a tornado wind field, so that the judgment of the wind field is realized, and the adjustment of inflow of the wind field is fed back. The distribution positions of the cobra probes comprise a position close to the inflow port, a position near the central area of the bottom, boundary areas of the upper part, the middle part and the lower part of the tornado generating space and the central area.

The wind field surface of outflowing, optional setting on side panel and top panel, when setting up on the top panel, the available bearing connection of top panel rotates around the center pin, and the outflowing port sets up in non-central zone, and rotatory outflowing panel forms the air outlet of removal, and the tornado top is realized around central rotary motion.

Drawings

FIG. 1 is a wind field space of a tornado simulator of the present invention;

FIG. 2 is a cross-sectional view of a tornado generation space and TFI eye-magic probe distribution;

fig. 3 is a schematic diagram of the hinge connection between the organic glass vertical plate and the flat plate, and the angle steel connection between the vertical plate and the horizontal plate.

Fig. 4 is a sectional view of the rotatable top plate.

FIG. 5 shows a servo motor linked blower controlled by a computer.

Fig. 6 is a schematic view of the inlet to the supply air duct connection.

Reference numerals: a

1. An inlet port; 2. a tornado generating space; 3. a side panel; 4. a top plate; 5. a hinge; 6. a foaming joint mixture; 7. nailing; 8. an air supply duct; 9. a blower; 10. a servo motor; 11. a multipoint roller; 12. a computer; 13. a rotating bearing; 14. a windproof brush; 15. TFI cobra probe.

Detailed Description

The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in a very simplified form and are not to precise scale, and are provided solely for the purpose of facilitating and clearly aiding in the description of the invention.

As shown in fig. 1, 2, 3, 4, 5 and 6, the invention relates to a tornado simulator, which comprises an electromechanical transmission air control device, an air supply pipeline, a tornado generating space and an outflow surface. The wind control device is composed of a servo motor controlled by a computer and a blower linked with the motor, and ensures that the wind speed is input into the tornado generating space in a set function mode. The inflow port connected with the air supply pipeline flexibly rotates through the rotating bearing and the windproof hairbrush, inflow air flows in from multiple angles, the tornado generating space is formed by splicing transparent organic glass materials, and the tornado generating space is flexible to install and disassemble. The outflow surface can be arranged on the side panel and the top panel. The top plate is provided with an annular groove, is guaranteed to be fixed by a multipoint rolling shaft and can rotate around a midpoint, and the top of the tornado can move. In addition, an exhaust fan can be installed on the outflow surface to control the wind speed of the outflow surface. Pigment powder is placed on the bottom surface of the tornado generating space, the shape of the tornado can be visually observed, and a TFI cobra probe is arranged inside the tornado generating space to monitor the wind speed. The distribution positions of the cobra probes comprise a position close to the inflow port, a position near the bottom central region, a lower boundary region, a middle boundary region, an upper boundary region of the tornado generation space, a lower central region, a middle central region and an upper central region.

In the invention, because the main plate organic glass has light weight, high strength and good light transmission, a connection mode of hinges and angle steel is adopted, the vertical plate and the plane plate are connected by the hinges, the vertical plate and the horizontal plate are connected by the angle steel, and in addition, gaps between the plates are compacted by foaming gap fillers, so that the secondary utilization of the plates can be realized without being influenced.

In the invention, if the weight of the equipment is large due to the size of the equipment, a frame can be arranged to assist the load bearing.

In the invention, the design and development of all hardware components are premised on the adaptability to the field environment.

In the present invention, the size of the apparatus and the size of the parts are not limited, and are considered in the implementation process.

The above-mentioned embodiments are only preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, various modifications and equivalents can be made without departing from the principle of the present invention, and those modifications and equivalents which are made to the claims of the present invention fall within the protection of the present invention.

Claims

1. A tornado simulator comprises an electromechanical transmission air control device, an air supply pipeline, a tornado generating space and an outflow surface; the method is characterized in that: the electromechanical transmission air control device comprises a servo motor controlled by a computer and a motor linked blower, wherein an air inlet is arranged above the air supply pipeline, and a rotating bearing and an air-proof brush are arranged inside the air supply pipeline; the tornado generating space is formed by splicing transparent organic glass, and the outflow surfaces are arranged on the side panels and the top plate; an annular groove is formed between the top plate and the side panel, is fixed by a multi-point rolling shaft and can rotate around a middle point; an exhaust fan can be installed on the outflow surface.

2. A tornado simulator as claimed in claim 1, wherein: the controllable motor linked blower forms a function editing controllable wind speed.

3. A tornado simulator as claimed in claim 1, wherein: the bottom surface of the tornado generating space is provided with pigment powder.

4. A tornado simulator as claimed in claim 1, wherein: the organic glass plates are connected through hinges and angle steels, the horizontal plates and the vertical plates are connected through the angle steels, and gaps between the plates are compacted through foaming agents.

5. A tornado simulator as claimed in claim 1, wherein: inside TFI cobra probe that sets up in space takes place for the tornado, and cobra probe distribution position includes: the position close to the inflow opening, the position close to the bottom central area, the lower boundary area of the tornado generating space, the middle boundary area, the upper boundary area, the lower central area, the middle central area and the upper central area.