CN201837515U

CN201837515U - Wedge grid combination device for simulating atmospheric wind tunnel boundary layers

Info

Publication number: CN201837515U
Application number: CN2010205508027U
Authority: CN
Inventors: 余世策; 冀晓华; 胡志华; 蒋建群
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2011-05-18
Anticipated expiration: 2020-09-30

Abstract

The utility model discloses a wedge grid combination device for simulating atmospheric wind tunnel boundary layers. One side of one of two equilateral steel angles having lengths equal to a width of a wind tunnel test section and one side of the other are respectively fixed to the upper wall and the lower wall of a section of a wind tunnel, the outsides of the outer sides of the two equilateral steel angles are respectively provided with an elongated slot along the length direction, a plurality of T-shaped steel bars are perpendicularly mounted between the equilateral steel angles, short sides of the T-shaped steel bars are slidably connected with the inner sides of the elongated slots on the other sides of the two equilateral steel angles and are fixed, two sides of each long side of the corresponding T-shaped steel bar are respectively provided with a right-angled triangular wood board, a slide base is mounted inside each elongated slot on two sides of the long side of the corresponding T-shaped steel bar, the slide bases are hinged with bearing blocks mounted on short sides of the right-angled triangular wood boards, and the short side of each T-shaped steel bar is provided with a row of bolt holes along the length direction for mounting transverse baffles and vertical baffles. By changing corners of the right-angled triangular wood boards, windward states of wedges can be adjusted and the transverse baffles and the vertical baffles are changed to adjust wind screening effects at different positions so as to meet simulation requirements of different landforms.

Description

The wedge barrier composite set of a kind of wind-tunnel boundary layer simulation

Technical field

The utility model relates to the test unit of Structural Wind Engineering technology, especially relates to the wedge barrier composite set of a kind of wind-tunnel boundary layer simulation.

Background technology

Wind tunnel test is a main research means of carrying out Structural Wind Engineering research, and accurately simulation of atmospheric boundary layer is to carry out the basic premise of building wind load test.Roughness element, wedge and barrier are the most common atmospheric boundary layer passive simulation devices, and roughness element is mainly used to form subaerial wind profile and turbulivity section, and wedge and barrier are mainly used to simulate the Field Characteristics of whole wind-tunnel.Regulation according to China's loading code for design of building structures, China's surface roughness type is divided into A, B, four kinds of landforms of C, D, simulate landforms and other special landforms of different scaling factors in addition according to the testing requirements needs, therefore need the geomorphic type of simulating very many in the actual engineering, this just requires the in good time changes shape of passive simulation device energy in the wind-tunnel, to adapt to the simulation needs of different landforms.Regrettably domestic most of wind-tunnel all do not have a cover can adapt to the analogue means that multiple landforms simulation requires at present, can only both cause huge waste according to the specific requirement change analogue means of each simulation, have reduced work efficiency again.

Summary of the invention

The purpose of this utility model is to provide the wedge barrier composite set of a kind of wind-tunnel boundary layer simulation, makes it can be used in the multiple surface roughness type of simulation and other special landforms, thereby lays the foundation for carrying out the Wind Engineering test.

The technical scheme that its technical matters that solves the utility model adopts is:

One side that length equals two equal angles of test chamber width is fixed on the last lower wall surface of wind-tunnel section, the outside of the another side of two equal angles is over against the flow path direction that comes of wind, the equal along its length symmetry of the another side of two equal angles has kidney slot, be vertically installed with many T steels between two equal angles, the minor face of every T steel is connected with the kidney slot inner slide of two equal angle another sides and is fixing, both sides on the long limit of every T steel are installed the right-angle triangle plank respectively, after the long limit of the long right-angle side of right-angle triangle plank and T steel is hinged, the right-angle triangle plank can inwardly overturn, below the both sides on the long limit of every T steel, in the kidney slot of equal angle glide base is installed respectively, glide base is hinged with the bearing seat that is installed in right-angle triangle plank minor face by straight-bar, has row's screw along its length at every T steel minor face.

The shape of the right-angle triangle plank that install the both sides on the long limit of described every T steel is identical.

A described every T steel minor face row along its length is equipped with that width equates or the unequal horizontal plate washer of width forms horizontal barrier in the screw.

A described every T steel minor face row along its length is equipped with width in the screw and is formed vertical barrier greater than a vertical plate washer of T steel minor face width, and vertical barrier is along wind-tunnel section center line symmetric arrangement.

The beneficial effect that the utlity model has is:

The utility model is combined formation one cover multifunction quilt dynamic simulated device with movable wedge and movable barrier, regulate the form of facining the wind of wedge by the link position that changes straight-bar and kidney slot, regulate blockage ratio by the quantity and the installation site that change T-steel, by different vertical plate washers and the laterally shelves wind scorpion of plate washer adjusting diverse location are installed, to adapt to the simulation requirement of different landforms.This device can improve the quality and the efficient of wind-tunnel boundary layer simulation greatly, reduces the waste of material, reaches the unification of economic benefit and social benefit.

Description of drawings

Fig. 1 is a structural principle front view of the present utility model.

Fig. 2 is the sectional view of Figure 1A-A.

Fig. 3 is the sectional view of Figure 1B-B.

Fig. 4 is the sectional view of Fig. 1 C-C.

Fig. 5 is the enlarged drawing of Fig. 1 D.

Fig. 6 is the enlarged drawing of Fig. 2 E.

Fig. 7 is the enlarged drawing of Fig. 2 F.

Fig. 8 is the enlarged drawing of Fig. 3 G.

Fig. 9 is the enlarged drawing of Fig. 4 H.

Among the figure: 1, equal angle, 2, L shaped steel, 3, T steel, 4, the right-angle triangle plank, 5, hinge, 6, straight-bar, 7, bearing, 8, kidney slot, 9, horizontal plate washer, 10, vertical plate washer, 11, bolt, 12, screw.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, shown in Figure 9, two length of the present utility model equal one side of two equal angles 1 of test chamber width by on the last lower wall surface that is bolted to a section of wind-tunnel, the outside of the another side of two equal angles 1 is over against the flow path direction that comes of wind, the another side of two equal angles 1 along its length all symmetry have kidney slot 8, kidney slot 8 can segmentation or whole section.Two 1 of equal angles are vertically installed with many T steels 3, and T steel 3 is close to by two L shaped steel 2 long limits and combines.The minor face of every T steel is connected with kidney slot 8 inner slide of two equal angle 1 another sides and is fixing, in the both sides on every T steel 3 long limits right-angle triangle plank 4 is installed respectively, forms wedge.The long right-angle side of right-angle triangle plank 4 and T steel 3 long limits with hinge 5 hinged after, right-angle triangle plank 4 can inwardly overturn, in the kidney slot 8 of the equal angle 1 below the both sides on every T steel 3 long limits glide base is installed respectively, glide base is hinged with the bearing 7 in the bearing seat that is installed in right-angle triangle plank 4 minor faces by straight-bar 6, adjust the corner of the position adjustments triangle plank 4 of glide base, thereby change the form of facining the wind of wedge around hinge.Have row's screw 12 along its length at every T steel 3 minor faces.

The shape of the right-angle triangle plank 4 that install the both sides on the long limit of described every T steel is identical, and right-angle triangle plank 4 minor faces flush with following equal angle medial surface, and the length of side of right-angle triangle plank 4 can be changed as required.

With bolt 11 equal the or horizontal barrier of unequal horizontal plate washer 9 formation of width of width is housed in described every T steel minor face row's screw 12 along its length, laterally barrier can evenly distribute or uneven distribution as required.

With bolt 11 the vertical plate washer 10 formation vertical barrier of width greater than T steel minor face width is housed in described every T steel minor face row's screw 12 along its length, vertical barrier is along wind-tunnel section center line symmetric arrangement.

Principle of work of the present utility model is as follows:

As shown in Figure 1, at certain concrete wind field debugging, the utility model adopts four T steels 3 and eight right-angle triangle planks 4 to install along wind-tunnel section center line symmetry, the form of facining the wind of the corner adjusting wedge of adjustment right-angle triangle plank 4 is simulated the average wind section along height change, the turbulence intensity of four vertical plate washers 10 raising wind-tunnel integral body is installed, three horizontal plate washers 9 is installed is improved the turbulence intensity on wind-tunnel tops.

Above-mentioned concrete principle of work is used for illustrating the utility model; rather than the utility model limited; in the protection domain of spirit of the present utility model and claim, any modifications and changes to the utility model is made all fall into protection domain of the present utility model.

Claims

1. the wedge barrier composite set of wind-tunnel boundary layer simulation, it is characterized in that: one side length equals on the last lower wall surface that is fixed on the wind-tunnel section of two equal angles of test chamber width, the outside of the another side of two equal angles is over against the flow path direction that comes of wind, the equal along its length symmetry of the another side of two equal angles has kidney slot, be vertically installed with many T steels between two equal angles, the minor face of every T steel is connected with the kidney slot inner slide of two equal angle another sides and is fixing, both sides on the long limit of every T steel are installed the right-angle triangle plank respectively, after the long limit of the long right-angle side of right-angle triangle plank and T steel is hinged, the right-angle triangle plank can inwardly overturn, below the both sides on the long limit of every T steel, in the kidney slot of equal angle glide base is installed respectively, glide base is hinged with the bearing seat that is installed in right-angle triangle plank minor face by straight-bar, has row's screw along its length at every T steel minor face.

2. the wedge barrier composite set of a kind of wind-tunnel according to claim 1 boundary layer simulation is characterized in that: the shape of the right-angle triangle plank that install the both sides on the long limit of described every T steel is identical.

3. the wedge barrier composite set of a kind of wind-tunnel according to claim 1 boundary layer simulation is characterized in that: be equipped with in described every T steel minor face row's screw along its length that width equates or the unequal horizontal plate washer of width forms horizontal barrier.

4. the wedge barrier composite set of a kind of wind-tunnel according to claim 1 boundary layer simulation, it is characterized in that: a described every T steel minor face row along its length is equipped with width in the screw and is formed vertical barrier greater than a vertical plate washer of T steel minor face width, and vertical barrier is along wind-tunnel section center line symmetric arrangement.