Double-walled helical corrugation metal tube and method of processing the same

A technology of spiral corrugated pipe and metal pipe, which is applied in the field of double-walled multi-head spiral corrugated metal pipe and its processing field, can solve the problems of low heat exchange efficiency and low safety factor, and achieves high yield, enhanced pressure bearing capacity, and high processing efficiency. simple craftsmanship

Active Publication Date: 2009-02-18
HANGZHOU SHENSHI ENERGY CONSERVATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly provides a double-wall spiral corrugated metal tube with simple structure, high heat exchange efficiency, durability and high safety factor and its processing method; Single layer, low safety factor, low heat transfer efficiency technical problems

Method used

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  • Double-walled helical corrugation metal tube and method of processing the same
  • Double-walled helical corrugation metal tube and method of processing the same
  • Double-walled helical corrugation metal tube and method of processing the same

Examples

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Effect test

Embodiment 1

[0019] Such as figure 1 and 2 As shown in and 5, a double-wall spiral corrugated metal pipe includes two inner and outer pipe bodies, and the inner pipe 1 and the outer pipe 2 are both made of copper material. Both the inner tube 1 and the outer tube 2 are spiral corrugated tubes, the gap distance between the inner tube wall and the outer tube wall is 2mm, the tube wall thickness of the inner tube 1 and the outer tube 2 is 0.2mm, the inner tube 1 and the outer tube The corrugations of the pipe 2 coincide, the diameter of the inner pipe is Φ6mm, the angle α between the tangent line of the thread of the inner pipe 1 and the outer pipe 2 and the cross section of the pipe body is 15°, the depth H of the thread is 3mm, and the head of the thread The number is 2 heads. During processing, first set the pitch and depth of the twisted tube on the equipment according to the outer diameter and technical requirements of the tube to be twisted, and then thread the two-layered tube body t...

Embodiment 2

[0021] As shown in Figures 3, 4 and 5, a double-wall spiral corrugated metal pipe includes two layers of pipe bodies, the inner pipe and the outer pipe are made of copper material. The inner tube 1 is a smooth tube, the outer tube 2 is a spiral corrugated tube, the inner tube wall is close to the outer tube wall, and the inner tube wall abuts against the thread protrusion of the outer tube wall, thereby fixing the inner tube. The wall thickness of the inner tube 1 and the outer tube 2 is 1.5 mm, the diameter of the inner tube 1 is Φ50 mm, the angle α between the tangent line of the thread of the outer tube 2 and the cross section of the tube body is 30°, and the depth H of the thread is 8mm, the number of threads is 5. During processing, first set the pitch and depth of the twisted tube on the equipment according to the outer diameter and technical requirements of the tube to be twisted, and then thread the two-layered tube body to be drawn. The lengths of the two layers are t...

Embodiment 3

[0023] Such as figure 1 and 2 As shown in and 5, a double-wall spiral corrugated metal pipe includes two inner and outer pipe bodies, and the inner pipe 1 and the outer pipe 2 are both made of copper material. The inner tube 1 and the outer tube 2 are both spiral corrugated tubes, the gap distance between the inner tube wall and the outer tube wall is 15mm, the tube wall thickness of the inner tube 1 and the outer tube 2 is 3mm, the inner tube 1 and the outer tube 2 The corrugations coincide, the diameter of the inner pipe 1 is Φ80mm, the angle α between the tangent line of the thread of the inner pipe 1 and the outer pipe 2 and the cross section of the pipe body is 45°, the depth H of the thread is 12.5mm, and the thread The number of heads is 12. All the other are the same with embodiment 1.

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Abstract

The invention relates to a heat exchange component, in particular to a double-wall multi-head spiral corrugated metal pipe used for a heat exchanger and a machining method thereof. The pipe body comprises an inner pipe body and an outer pipe body; the outer pipe is a spiral corrugated pipe, while the inner pipe is a smooth pipe or a spiral corrugated pipe; and a gap is arranged between the inner pipe wall and the outer pipe wall. The invention mainly provides a durable double-wall spiral corrugated metal pipe which has simple structure, high heat exchange efficiency and high safety coefficient, and a machining method thereof so as to solve the technical problems in the prior art that the metal pipe in the existing heat exchanger is single-layered and has low safety factor and heat exchange efficiency.

Description

technical field [0001] The invention relates to a heat exchange component, in particular to a double-wall multi-head spiral corrugated metal tube for a heat exchanger and a processing method thereof. Background technique [0002] With the development of society, heat exchangers are used more and more widely, and their shapes and materials change a lot. The heat exchange tubes in most heat exchanger equipment generally adopt ordinary metal tubes, which are relatively simple in structure and convenient in processing, but the heat exchange effect is low and the metal consumption is large. There are also heat exchangers that use knurls, threads, fins, folds and other reinforced surfaces to enhance the heat exchange effect, but the processing technology is relatively complicated. Moreover, most of the current heat exchange tubes use single-layer tubes, such as the Chinese patent application: "spiral corrugated metal tube (CN2837760)". The safety and reliability of single-layer h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/42B21D15/04
CPCF28D7/106F28F1/08
Inventor 沈卫立
Owner HANGZHOU SHENSHI ENERGY CONSERVATION TECH
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