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Corrosion resistant enamel hot pipe

A corrosion-resistant and enamel technology, which is applied in the field of corrosion-resistant enamel heat pipes, can solve problems such as decarburization, single-sided porcelain tube interior, oxidation, etc., achieve low strength loss, increase resistance to cold and heat shocks, and reduce processes.

Inactive Publication Date: 2008-01-30
NANJING SHENGNUO HEAT PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing enamel heat pipes are all single-sided enamel, which is easy to cause oxidation and decarburization in the tube, and to invent a corrosion-resistant enamel heat pipe that is manufactured by a specific method and is coated with enamel inside and outside.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] As shown in Figures 1, 4, 5, and 6.

[0029] A corrosion-resistant enamel heat pipe, which mainly includes a carbon steel base pipe composed of a cooling section 3 and a heating section 5, and fins 6 are connected to the outer surfaces of the cooling section 3 and the heating section 5, and the edges of the fins are arc-shaped Structure (shown in Figure 4 or Figure 5), the heating section 5 and the cooling section 3 are connected through the sealing installation body 4, the other end of the cooling section 3 is equipped with an upper head 2, and the upper head 2 is equipped with a protective cap 1 Inner enamel layer 9 with a thickness of 0.05-0.3 mm is enamelled on the inner surface of cooling section 3 and heating section 5, and the outer surface of cooling section 3 and heating section 5 and the outer surface of fin 6 are enamelled An outer enamel layer 8 with a thickness of 0.05-0.3 mm is fired, as shown in FIG. 1 .

[0030] During specific manufacturing, at first, ...

Embodiment 2

[0034] As shown in Figures 2, 4, 5, and 6.

[0035] A corrosion-resistant enamel heat pipe, which mainly includes a cooling section 3 made of carbon steel and a heating section 5 also made of carbon steel. A loop structure is formed between the cooling section 3 and the heating section 5 through connecting pipes 401 and 402. Cooling The upper end of the section 3 is equipped with an upper head 2, the upper head 2 is equipped with a protective cap 1, the lower end of the cooling section 3 is installed with a lower head 7, and the lower end of the cooling section 3 is connected with the lower end of the heating section 5 through a connecting pipe 401 , the upper end of the heating section 5 is connected to the upper end of the cooling section 3 through a connecting pipe 402, and fins 6 are connected to the outer surfaces of the cooling section 3 and the heating section 5, and the edges of the fins 6 on the heating section 5 are arc-shaped (see Figure 4 or Figure 5, the edge of t...

Embodiment 3

[0041] As shown in Figures 3, 4, 5, and 6.

[0042] A corrosion-resistant enamel heat pipe, which mainly includes a cooling section tube row 301 made of carbon steel and a heating section tube row 302 also made of carbon steel. The cooling section tube row 301 and the heating section tube row 302 are connected by connecting pipes 303 and 304 Form a ring structure, the lower end of each cooling section in the cooling section pipe row 301 is connected with the lower end of each cooling section in the heating section pipe row 302 through the connecting pipe 303, and the upper end of each cooling section in the cooling section pipe row 301 is connected with the connecting pipe 304. The upper ends of the cooling sections in the tube row 302 of the heating section are connected, and the inner and outer surfaces of the outer heating sections in the tube row 302 of the heating section are all enamelled with a thickness of 0.05-0.3 mm, as shown in FIG. 3 .

[0043] During the specific ...

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Abstract

A corrosion resistant enamel heat pipe pertains to heat pipe technical field, and is characterized in that the invention is made by the method: firstly, a basic pipe is produced with carbon steel and the edges of fins on the surface of the basic pipe are made in arch structures; secondly, an enamel layer with a thickness of 0.05-0.3 mm is coated on the inner and outer surfaces of the basic pipe and the surfaces of the fins; thirdly, the basic pipe coated with enamel is vertically put in a heating furnace for enameling burning, with the enameling burning temperature being controlled at 700-950 DEG C and the enameling burning time at 5-15 minutes, so as to fully vitrify the enamel layer, then the corrosion resistant heat pipe of the invention is obtained after cooling. The invention solves the problem of low production cost of the corrosion resistant heat pipe and has the advantages of simple production, good corrosion resistant performance and a cost that is far lower than the cost of a stainless steel heat pipe.

Description

technical field [0001] The invention relates to a heat pipe, in particular to a heat pipe with good corrosion resistance and low cost which can replace stainless steel, in particular to a corrosion-resistant enamel heat pipe. Background technique [0002] At present, industrial heat pipe elements are generally made of steel, aluminum, and copper, and their corrosion resistance is not high. In some cases, even using stainless steel often cannot solve the problem. As a corrosion-resistant heat transfer element, the enamel heat pipe can be used in many fields, especially when there is sulfuric acid dew point corrosion, it will show great advantages. The manufacturing cost of carbon steel coated with enamel is much lower than that of stainless steel, and the corrosion resistance is much higher than that of stainless steel, and the heat transfer performance is not reduced much. At present, the existing technology does not consider the oxidation and decarburization in the tube du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F19/06
CPCF28D15/02F28F19/02
Inventor 李来所徐德新范红途杨峻严励
Owner NANJING SHENGNUO HEAT PIPE
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