Double-walled helical corrugation metal tube and method of processing the same
A metal tube and spiral technology, which is applied in the field of double-wall multi-head spiral corrugated metal tube and its processing, can solve the problems of low safety factor and low heat exchange efficiency, and achieve high yield, enhanced pressure bearing capacity, and optimized surface structure. Effect
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Embodiment 1
[0019] As shown in Figures 1, 2 and 5, a double-walled spiral corrugated metal tube includes inner and outer two-layer tube bodies, and the inner tube 1 and the outer tube 2 are 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 wall thickness of the inner tube 1 and the outer tube 2 is 0.2mm, and the inner tube 1 and the outer tube are 0.2mm thick. The corrugations of the pipe 2 overlap, the diameter of the inner pipe is Φ6mm, the angle α between the tangent 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 is 15°. The number is 2. 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 twisted tube, and then thread the two layers of the tube to ...
Embodiment 2
[0021] As shown in Figures 3, 4 and 5, a double-walled helical corrugated metal pipe includes inner and outer two-layer pipe bodies, and the inner and outer pipes are made of copper material. The inner tube 1 is a smooth tube, and the outer tube 2 is a spiral corrugated tube. The wall thickness of the inner tube 1 and the outer tube 2 is 1.5mm, the diameter of the inner tube 1 is Φ50mm, the angle α between the tangent 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 twisted tube, and then thread the two layers of the tube to be drawn, the lengths of the two layers are the same, the ends are aligned, and then The aligned double-layer pipe body is passed through the equipment, and the ends of the two-layer pipes are fixed. The threa...
Embodiment 3
[0023] As shown in Figures 1, 2 and 5, a double-walled spiral corrugated metal tube includes inner and outer two-layer tube bodies, and the inner tube 1 and the outer tube 2 are 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 wall thickness of the inner tube 1 and the outer tube 2 is 3mm, and the inner tube 1 and the outer tube are 3mm thick. 2 The corrugations overlap, the diameter of the inner pipe 1 is Φ80mm, the angle α between the tangent 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 The number of heads is 12. The rest are the same as in Example 1.
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