Movable scrub-grassland field test wind tunnel device

A wind tunnel equipment and field testing technology, applied in aerodynamic tests, machine/structural component testing, measuring devices, etc., can solve the problem that wind erosion wind tunnels cannot carry out ground test and external blowing test, and affect the air in the wind tunnel Airflow uniformity and stability, large structure and other issues

Active Publication Date: 2016-06-01
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following problems in borrowing wind erosion wind tunnels: First, wind erosion wind tunnels are all inverted "U" structures without a bottom plate, which will inevitably affect the uniformity and stability of air flow in the wind tunnel; secondly, wind erosion wind tunnels are all large Medium-sized equipment, with huge structure and high power, is not easy to carry and operate in the field; the third is that the test space is inside the wind tunnel, and the wind tunnel test in the outer area of ​​the wind tunnel cannot be realized
However, the height of the whole plant of large shrubs such as salix...

Method used

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  • Movable scrub-grassland field test wind tunnel device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] Embodiment 1: Field test wind tunnel equipment of movable bushes and grasses of the present invention

[0100] The wind tunnel equipment consists of a power section 1, a transition section 2, a first test section 3, a second test section 4, a sanding device 5, a swing mechanism 6 and a base support frame;

[0101] The power section 1 is composed of a controllable motor unit with a motor power of 3kw installed in a circular tube and a fan with an axial flow structure driven by it; the transition section 2 is formed by connecting a circular tube with a square cone tube, and one end of it is It is a circular air inlet, and its other section is a square cone pipe end, which is connected in series with the first test section 3 and the second test section 4 in sequence; one end of the transition section 2 connected to the first test section 3, Both the first test section 3 and the second test section 4 are square tubes; the lower part of the first test section 3 and the secon...

Embodiment 2

[0107] Embodiment 2: Field test wind tunnel equipment of movable bushes and grasses of the present invention

[0108] The implementation of this embodiment is the same as Example 1, except that the power of the motor installed in the circular tube is 3kw; the length of the transparent organic glass observation window is 50cm, and the width is 30cm; power section 1, transition section 2, first test The length ratio of section 3, the second test section 4 and the swing mechanism 6 is 1:2.8:2.5:2.5:1.8. The ratio of the total length of the field test wind tunnel equipment to the width of the first test section 3 is 1.0:0.1. The effective diameter ratio of the first stepping motor 6-1 to the first pinion 6-2 is 1:4; the effective diameter ratio of the large ring gear 6-3 to the first pinion 6-2 is 12.5:1; the second The effective diameter ratio of the stepping motor 6-5 and the second pinion 6-6 is 1:4; the adjustable height of the mechanically adjustable base support frame is 75...

Embodiment 3

[0109] Embodiment 3: Field test wind tunnel equipment of movable type shrubs and grasses of the present invention

[0110] The implementation of this embodiment is the same as Example 1, except that the power of the motor installed in the circular tube is 4kw; the length of the transparent plexiglass observation window is 50cm, and the width is 25cm; power section 1, transition section 2, first test The length ratio of section 3, the second test section 4 and the swing mechanism 6 is 1:3.5:3.1:3.1:2.2. The ratio of the total length of the field test wind tunnel equipment to the width of the first test section 3 is 1.3:0.1. The effective diameter ratio of the first stepping motor 6-1 to the first pinion 6-2 is 1:6; the effective diameter ratio of the large ring gear 6-3 to the first pinion 6-2 is 9:1; the second The effective diameter ratio of the stepping motor 6-5 and the second pinion 6-6 is 1:6; the adjustable height of the mechanically adjustable base support frame is 100...

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Abstract

The present invention relates to a movable scrub-grassland field test wind tunnel device. The wind tunnel device is composed of a power section 1, a power section 2, a first test section 3, a second test section 4, a sand feeding device 5, a swing mechanism 6 and a pedestal support frame. Through adoption of a peripheral enclosed-type structure, the movable scrub-grassland field test wind tunnel device solve the problem that a traditional U-shaped structure causes an uniform air-flow flow field, simulate natural wind in various states such as direct flow wind, whirlwind, inclination wind and complex wind with various combination and complete the whole plant salix shrub field blowing test, may perform repeated tests, and provides a lot of real and efficient data for scientific research.

Description

【Technical field】 [0001] The invention belongs to the technical field of forest protection. More specifically, the present invention relates to a wind tunnel device for field testing of movable bushes and grass. 【Background technique】 [0002] Research papers on the ecological harvesting theory of Salix salix and other shrub forests are rarely reported, and the harvesting theory is in the early stage of exploration. The existing shrub harvesting theory uses the whole shrub as the minimum stubble unit for regional clearcutting, which has many disadvantages, such as the decrease of surface vegetation coverage, resulting in excessive water loss and the disappearance of the "fat island effect" , soil desertification intensifies, and shrubs grow slowly and degrade overall after logging. [0003] It is a feasible research route to conduct multidisciplinary and systematic scientific research on the structural parameters and ecological functions of whole shrubs and shrubs. Taking...

Claims

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Application Information

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IPC IPC(8): G01M9/02G01M9/04
CPCG01M9/02G01M9/04
Inventor 裴志永丁海泉黄萨仁韩宝生李阳范乐
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
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