Pipe-in-pipe structure and machining method and installing method thereof

Abstract

The invention relates to a pipe-in-pipe structure which comprises an outer pipe and an inner pipe arranged in the outer pipe, wherein a plurality of connection plates are sleeved on the inner pipe and fixed in the outer pipe, a column top sleeve and a column bottom sleeve are arranged on the inner pipe, the column top sleeve is sleeved at the top end of the inner pipe, the inner diameter of the column top sleeve is larger than the outer diameter of the column bottom sleeve, the column bottom sleeve is sleeved at the bottom end of the inner pipe, and the inner diameter of the column bottom sleeve is larger than the outer diameter of the inner pipe; the top end of the inner pipe protrudes out of the column top sleeve, and the column bottom sleeve protrudes out of the bottom end of the inner pipe. The pipe-in-pipe structure has the advantages of being high in machining precision and convenient in butt joint. The invention further provides a machining method and an installing method of the pipe-in-pipe structure.

Description

technical field [0001] The invention belongs to the field of building construction, and in particular relates to a pipe-in-pipe structure, a manufacturing method and an installation method thereof. Background technique [0002] With the vigorous development of the domestic construction industry, domestic architects began to give some new design concepts to modern buildings. Arranging equipment pipes in structural columns not only optimizes the appearance of the building, but also reduces the chance of equipment pipes being damaged by external forces during use. At the same time, it provides a new way of thinking for the layout of construction equipment pipes. It has been widely used in reinforced concrete in recent years. in structure. [0003] Based on this idea, some designers in steel structure engineering also set equipment pipelines in steel pipe columns. Structural steel pipe columns and equipment pipes must be butted in sections during construction. During the const...

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Problems solved by technology

[0005] (1) During construction, operators need to enter inside the outer pipe (steel pipe column). However, the layout of pipes and stiffeners inside the outer pipe is complicated, and the operating space is narrow. The safety of operators and the connection quality of the inner pipe (rainwater pipe) cannot be effectively guaranteed

[0006] (2) After the outer tube is installed and fixed, it needs to be connected to the inner tube, which requires very high precision. Once the accuracy deviation of the outer tube or inner tube is slightly larger, it will be difficult to implement adjustment and modification work

[0007] (3) This technology has great limitations in its implementation. The welded connection of the inner pipe depends on the size of the inner space of the outer pipe, and the socket construction of the inner pipe from top to bottom is only applicable to the construction of the inner pipe with only the main pipe. If the inner pipe has For branch pipes that pass through the wall of the outer pipe, this method will not work

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