Casing type buried pipe

Abstract

The invention discloses a novel sleeve type buried pipe, belongs to the technical field of ground source heat pumps. The buried pipe comprises an inner pipe and an outer pipe which are coaxially arranged; a water outlet channel is formed between the inner pipe and the outer pipe; a water inlet channel is formed inside the inner pipe; a heat insulation pipe is arranged on the outer side of the inner pipe in a sleeving manner; an air heat insulation layer is formed between the heat insulation pipe and the inner pipe; the outer pipe and the heat insulation pipe, and the inner pipe and the heat insulation pipe are fixedly connected through baffles arranged therebetween; one ends of the baffles are connected with the outer pipe, and the other ends of the baffles penetrate through the heat insulation pipe and are connected with the inner pipe. According to the invention, the baffles are arranged and directly penetrate through the heat insulation pipe, so that the heat insulation pipe, the inner pipe and the outer pipe are connected into a whole, and meanwhile, the baffles and the outer pipe are identical in length, therefore, the fixation between the heat insulation pipe and the inner pipe, and the outer pipe and the heat insulation pipe is more reliable and the action force generated by the fluid can be effectively borne.

Description

technical field [0001] The invention belongs to the technical field of ground source heat pumps, and more specifically relates to a novel casing type buried pipe. Background technique [0002] The ground source heat pump is a device that utilizes the relatively stable temperature of the underground normal temperature soil and completes the heat exchange with the building through the buried tube heat exchanger buried around the building. In winter, heat is taken from the soil to heat the building; in summer, heat is released to the soil to cool the building. The soil is used as the heat source or cold source, and the building is heated or cooled by the heat pump unit. The ground source heat pump system can save energy by about 50% compared with conventional heating and air-conditioning systems. It is a new type of high-efficiency energy-saving air-conditioning system that utilizes renewable energy. [0003] Construct a new type of casing-type buried pipe, the middle pipe co...

AI Technical Summary

Problems solved by technology

In addition, the fixing method between the water inlet pipe and the water outlet pipe directly affects the service life and strength of the buried pipe. The existing connection structure, such as the patent for the casing type ground source heat pump buried pipe disclosed in the Chinese application number 201320470929.1, this patent The outer tube and the heat insulation tube are fixed by setting a limit ring, the limit ring includes an outer ring and an inner ring, the inner ring is set on the heat insulation tube, and a support bar is provided between the outer ring and the inner ring The outer ring is connected to the inner wall of the outer pipe; because the fixing method is indirect, the heat insulation pipe and the outer pipe cannot form a whole, and the cross-section of the inner ring and the outer ring itself increases the water flow to the limit. The impact of the bit ring, so it is easy to loosen in the actual working process

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