Windbreak grid wall

Abstract

It relates to a device for cutting air flow, reducing wind speed and stable flow field, particularly a windbreak grid. It solves the shore endurance and low strength of existing wind shielding material, together with secondary pollution of hard degradation, complicated processing and higher cost. The curve grid plate is divided into C shape, S shape and omega shape. The curvature direction can be the same or in reverse alternatively. It cuts the head on whirlwind into air flows in various angles and interfering with each other, making the best of the drive and energy of the wind, reducing the turbulence degree and wind pressure, forming a low wind speed flat flow zone at the lee side of the grid wall, avoiding interference of the air current to certain area of the lee side.

Description

technical field [0001] The invention relates to a facility for cutting airflow, reducing wind speed and stabilizing the flow field, in particular to a windbreak fence wall. Background technique [0002] Many bulk powdered raw materials in metallurgy, mining, construction, transportation and other industries are stored in an open environment directly in the open storage yard. Because it is usually stacked in the open air, when the wind blows, the powdery materials will be rolled up. On the one hand, it will cause serious pollution to the environment. On the other hand, it will also cause a large amount of materials to be lost, causing considerable economic losses to the enterprise. The way to solve this problem at present has tarpaulin, solid wall, strip orifice plate or butterfly-shaped orifice plate and polyester fiber or nylon fiber weaving mesh structure fence. Among them, the use of thatch or other things to cover the operation of the yard has a greater impact; if a sol...

AI Technical Summary

Problems solved by technology

Among them, the use of thatch or other things to cover the operation of the yard has a greater impact; if a solid windbreak is directly established, when the high-speed wind jumps over the windbreak, a cyclone flow will be formed in the negative pressure area on the leeward side (such as Shown in accompanying drawing 6) makes the air flow in the field more turbulent; and the windshield wall (the general opening rate is 30% to 35%. Generally, at least hundreds of thousands of ventilation holes must be processed in each windshield wall of the stockyard, which is complicated to process and high in cost). The leeward side interferes with each other to reduce the speed and energy of the wind, preventing the wind from rolling up the powdery materials, which has a good dust suppression effect, but due to the large amount of folding, the consumption of materials per unit area is large; and due to the disc-shaped orifice plate Due to the limitation of the opening direction and the position of the ventilation hole, it only has a good windproof effect on the wind coming from one side, so when the wind blows out from the enclosure, a part of the material will still be brought out

However, the butterfly-shaped or crepe-shaped plate structure of FRP and the mesh material woven by polyester fiber or nylon fiber are all chemical materials, with poor weather resistance and low strength, and are difficult to degrade and cannot be recycled. When discarded, they will become industrial waste.

From the point of view of the use effect, because the butterfly orifice plate is made of glass fiber reinforced plastic, its aging resistance and mechanical strength are low, especially in the cold and windy environment, the material becomes hard and brittle, and it is easy to break and damage

Due to its high elasticity, the mesh flexible material often bulges or even shakes the flag when encountering strong winds. The load on the wall increases, and the stability of the wall is greatly threatened; coal ash and dust are easily mixed between the fibers, and the wall is very Difficult to clean, so the entire wall becomes unsightly after a period of use

Considering the processing technology, the orifice plate structure material needs to drill a large number of holes, and the processing is complicated and costly

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