Large-span greenhouse

Abstract

The invention relates to a large-span greenhouse which comprises a greenhouse steel arch structure, a north wall double-layer heat preservation structure, a gable wall heat preservation structure, a stand column structure, a deep soil heat storage and release device, a heat brewing and air supplementing device and a built-in aerobic fermentation bin. The gable wall heat preservation structures are arranged on the two sides of the greenhouse steel arch frame structure and the north wall double-layer heat preservation structure, the greenhouse steel arch frame structure is supported through the stand column structure, and the north wall double-layer heat preservation structure comprises an outer layer arch frame, an inner layer arch frame, a pull rod, a heat preservation quilt, a transverse pull pipe and an arch frame connecting plate. The deep soil heat storage and release device is arranged in soil below the large-span greenhouse, the heating and air supplementing device is arranged outside the large-span greenhouse, and the built-in aerobic fermentation bin is arranged in the large-span greenhouse. The large-span layout is adopted, the land utilization rate is increased, and mechanical operation is facilitated; meanwhile, the heat preservation performance of the greenhouse is improved through the biological heating and underground deep heat storage and release system and the double-layer heat preservation structure of the rear wall.

Description

technical field [0001] The invention belongs to the technical field of agricultural facilities, in particular to a large-span greenhouse. Background technique [0002] With the continuous development of agricultural facilities construction technology, new types of shed structures emerge in an endless stream; in terms of wall structure, many greenhouses still use brick walls and earth walls as the back wall and gable structure. Although this kind of wall has good thermal insulation performance, However, the amount of civil engineering is quite large, and the construction cost is relatively high. [0003] On the steel arch, in order to improve the safety of the greenhouse, a truss structure is often used, which consumes a lot of steel, has high welding costs, and has a long construction period; if a single-chord arch is used, the number of columns in the greenhouse will be increased to improve the greenhouse structure. Stability, this method is not conducive to mechanized ope...

AI Technical Summary

Problems solved by technology

[0005] 1) The height of the back wall of the existing solar greenhouse is too high, which leads to shading, and the distance between the greenhouses is very large, which wastes land and the land utilization rate is still not high

[0006] 2) The construction cost of the solar greenhouse is high, and the wall structure always occupies a large proportion

[0007] 3) The ventilation form of greenhouses and solar greenhouses is easy to form water pockets, which affects the structure and indoor crop growth

[0008] 4) The greenhouse structure is weaker than the solar greenhouse in terms of wind and snow load resistance, and is prone to structural weaknesses

[0009] 5) There is no additional heating and cooling device, which affects the growth of indoor crops

Aerobic fermentation can produce a high temperature of 60-70°C under suitable conditions. Although there are many studies on heat recovery and utilization, there are not many studies on the combination of aerobic fermentation and heat production without affecting the cultivation area. At the same time, most of the researches are mostly aimed at the treatment of harmful gases from aerobic fermentation, and there is no CO produced by it. 2 In-depth research combined with cultivation

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