Through-type evacuated collector tube machining process and inner tube forming device thereof

Abstract

The invention discloses a through-type evacuated collector tube machining process and an inner tube forming device. According to the process, a brand-new production process and special auxiliary equipment are adopted, variable-diameter areas of the inner tube are formed, a tail tube is connected to the outer pipe at the same time, the inner tube and the outer tube are combined after being cleaned,and vacuumizing and drying treatment are realized when the inner tube and the outer pipe are combined; the tail tube is removed and a getter module is subjected to high temperature after the combination is completed, so that the internal air is completely exhausted to realize vacuum treatment. Through an evacuated collector tube as shown through the process, the forming efficiency can be effectively improved and the damage rate can be reduced by matching with a special variable-diameter area forming device. According to the evacuated collector tube formed through the production process and the auxiliary device thereof, the heat collection and heat preservation are greatly improved compared with existing products, meanwhile, the inner diameter of the variable-diameter areas is increased compared with that of an existing product, so that the ventilation quantity is greatly improved, meanwhile, the outer diameter size of the outer pipe is unchanged, so that the close-coupled number in unit area can be effectively increased.

Description

technical field [0001] The invention belongs to the technical field of solar lighting devices, and in particular relates to a processing technology of a through-type vacuum heat collecting tube and an inner tube forming device thereof. Background technique [0002] As we all know, in the field of solar heating and heat exchange technology, with the improvement of solar heat exchange technology, the industry has gradually improved from a simple one-way heating pipe to a two-way penetration method. At present, there are some improved products on the market, but such improved products There are still technical constraints and deficiencies in the actual use process: for example, improved products such as the solar vacuum tube of 201180003241.6, which use expansion joints to realize the residual absorption of the diameter change of the glass tube when it is heated, so as to prevent the vacuum tube from being heated. In the actual production process, the vacuum tube with this stru...

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Problems solved by technology

[0002] As we all know, in the field of solar heating and heat exchange technology, with the improvement of solar heat exchange technology, the industry has gradually improved from a simple one-way heating pipe to a two-way penetration method. At present, there are some improved products on the market, but such improved products There are still technical constraints and deficiencies in the actual use process: for example, improved products such as the solar vacuum tube of 201180003241.6, which use expansion joints to realize the residual absorption of the diameter change of the glass tube when it is heated, so as to prevent the vacuum tube from being heated. In the actual production process, the vacuum tube with this structure cannot completely evacuate the inside of the vacuum chamber, and it is easy to introduce air when the ends are fused, causing a false vacuum and affecting the heat preservation effect; moreover, the vacuum tube is set on the outer diameter Multiple protrusions will seriously affect the number of heat-absorbing tubes installed per unit area, which will bring great technical disadvantages to the actual product assembly

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