Inner heat exchange pipe device of solar heat collecting pipe

Abstract

The invention discloses an inner heat exchange pipe device of a solar heat collecting pipe. The device comprises a special-shaped pipe head, and a heat exchange pipe body with one blocked end; the special-shaped pipe head is a corrosion-resistance overall metal part; a clamping convex ring is arranged on the special-shaped pipe head of the device; a sealing straight neck pipe is arranged below theclamping convex ring; a straight neck short pipe is arranged on the clamping convex ring; or, the straight neck short pipe is formed by overturning into the pipe below the sealing straight neck pipe;and a heat exchange pipe body is connected to the straight neck short pipe. As pipe head vertical surfaces of two pipes are welded, the problems of easy welding penetration and welding missing of thepipe walls of stainless steel thin-wall pipes in butt joint welding of pipe head to pipe head and pipe insertion welding of pipe head to pipe wall in the prior art cannot be generated, the phenomenonof incapability of normally performing the argon arc welding process due to easy welding penetration and welding missing of the pipe walls cannot be generated, and the phenomenon of weak corrosion resistance and easy water leakage of anti-leakage heat exchange pipes due to segregation of carbon in the welding places cannot generated.

Description

Technical field [0001] The invention belongs to the field of solar water heating devices, in particular to a heat exchange tube device in a solar heat collecting tube used in a solar water heating device. Background technique [0002] In the past, the heat collection device on the solar water heating device used in people's life used a direct-heating vacuum heat collection tube, and the heat absorption film on the vacuum heat collection tube can absorb sunlight to heat the water in the tube. The disadvantage is that the pipe contains a lot of water, the temperature rises slowly, and the heat exchange rate with the water in the water tank of the solar water heating device is slow. In addition, the vacuum heat collection tube is made of glass, which is relatively fragile. Therefore, it is easy to break when there is a big difference between the cold and heat of the water or the impact of heavy objects. This will cause all the water in the water tank of the solar hot water device to...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a new type of heat exchange tube device used in the vacuum heat collection tube on the solar water heating device, which solves the problems of high production cost, complicated process and thin Corrosion and water leakage at the welding point of the metal heat exchange tube device of the wall stainless steel tube and the heat exchange tube body

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