Prefabricated reinforced concrete pile with low temperature geothermal energy conversion function

Abstract

The invention relates to a reinforced concrete square post prefabricated by low temperature and terrestrial heat. It embeds post heat exchangers in variable shapes into the prefabricated reinforced concrete square post to support, baffle sand and reinforce the groundsill; processes the lower-layer lower temperature terrestrial heat exchanger to directly embed the post heat exchanger with pile and heat pump. It binds U-shape pipe heat exchanger, screw coiler heat exchanger or the pipe heat exchanger in other shape on the inner edge of prefabricated reinforced concrete square post with welding method or flange method to be embedded into sand; the pipe heat exchangers inside the prefabricated reinforced concrete square post are connected to the ground pipeline while the pipeline of heat exchanger is filled by fluid via which the heat exchange between steel cage, post concrete and around sand-water system can be processed to form a closed underground low-temperature terrestrial heat exchange.

Description

Technical field: [0001] The invention relates to a concrete prefabricated solid cross-section pile that utilizes a prefabricated reinforced concrete square pile to embed a tubular heat exchanger device in the pile body to convert low-temperature geothermal energy. Capability of multifunctional prefabricated reinforced concrete square piles. Background technique: [0002] At present, the known prefabricated reinforced concrete square piles mainly refer to concrete square cross-section piles containing steel cages prefabricated in factories or construction sites. The product categories of prefabricated reinforced concrete square piles are divided into: hammered whole piles, hammered welded piles and static pressure whole piles, static pressure welded piles, static pressure anchored piles, the size and performance of different types of prefabricated reinforced concrete square piles , material and structure requirements, design, selection, production, acceptance standards, pile...

AI Technical Summary

Problems solved by technology

Although some people in foreign countries have mentioned the concept of pile-buried heat exchangers, they are all based on high-strength polyethylene U-shaped pipe perfusion solid section piles (Laloui Lyesse, Moreni Matteo, Vulliet Laurent, Behavior of a bi-functional pile, foundation and heat exchanger, Canadian Geotechnical Journal, v 40, n 2, April, 2003, p 388-402.), these disadvantages based on drilling or embedding tubular heat exchangers in various cast-in-place piles are: the cost of drilling is high, and the pour-in type The construction of the tubular heat exchanger in the pile is complicated, and it is necessary to bind the tubular heat exchanger to the steel cage on site. Lowering the grouting pipe, pouring concrete and other processes will affect the construction efficiency

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