Heat exchanging pipe with reinforced heat transfer elements

A technology for enhancing heat transfer and heat exchange tubes, applied in the field of heat exchange tubes, can solve problems such as fouling on the inner wall of the tubes, difficulty in cleaning and maintenance, etc., achieve the possibility of eliminating the dirt layer, easy cleaning and maintenance, and improve heat transfer efficiency Effect

Active Publication Date: 2014-01-29
PETROCHINA CO LTD +1
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  • Abstract
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  • Claims
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Problems solved by technology

Since the fins in the tube are inclined relative to the axis of the tube and are distributed in a spiral shape, it has a good effect in terms of small pressure loss and enhanced heat transfe

Method used

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  • Heat exchanging pipe with reinforced heat transfer elements
  • Heat exchanging pipe with reinforced heat transfer elements
  • Heat exchanging pipe with reinforced heat transfer elements

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Example

[0038] Comparing Example 2 and Example 3, the arrangement and spacing of the enhanced heat transfer elements in the two embodiments are the same, the height and length of the enhanced heat transfer elements in Example 3 are greater than the size of the enhanced heat transfer elements in Example 2, However, its heat transfer capacity is lower than that of Example 2; compared with Example 2, the length of the enhanced heat transfer element in Example 4 is reduced, and its heat transfer capacity is lower than that of Example 2. The results are similar to the above. From the comparison results of the above two groups, it can be seen that the external dimensions of the enhanced heat transfer element have a significant impact on the pressure drop and heat transfer effect. Since the enhanced heat transfer element in Example 2 is closer to the streamlined shape, the pressure drop must At the same time, the heat transfer effect is better than that of Example 4, so it is very important t...

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Abstract

The invention relates to a heat exchanging pipe with reinforced heat transfer elements. The reinforced heat transfer elements are of a water-drop-shaped streamline type, or are in a triangular pyramid shape or a semi-oval-ball shape, and are distributed on the inner wall of the heat exchanging pipe in a scattered mode. When the inner surface of the heat exchanging pipe is spread, the reinforced heat transfer elements are distributed on the inner wall of the heat exchanging pipe in a triangular shape or distributed in a mode that a plurality of triangles are combined or distributed in the mode that the reinforced heat transfer elements can be divided into a plurality of triangles. The water-drop-shaped streamline type is that the heads are round and the tails are pointed, the heads are opposite to the fluid direction, and the tails are arranged in the fluid direction. The pointed heads of the triangular-pyramid-shaped reinforced heat transfer elements are opposite to the fluid direction, and the wide heads of the triangular-pyramid-shaped reinforced heat transfer elements are in the fluid direction. By means of the heat exchanging pipe, the heat transfer efficiency can be improved, formation of deposit layers on the inner surface of the heat exchanging pipe is reduced, and the heat exchanging pipes can be applied to the conditions of high temperature, high pressure and processing solid impurities or deposit matter in the pipe, and is especially suitable for industrial furnace pipes under high-temperature conditions.

Description

technical field [0001] The invention relates to a heat exchange tube, in particular to a heat exchange tube used in the fields of chemical industry, thermal power plant, metallurgy and food processing, which has enhanced heat transfer effect and reduced fouling on the inner wall of the tube. The inner surface of the heat exchange tube is provided with Enhanced heat transfer elements. Background technique [0002] It is widely used in practical engineering to realize the energy exchange between the inner and outer media of the tube through the heat exchange tube wall. The ordinary heat exchange tube is a smooth tube, the inner and outer tube walls are relatively smooth, the structure is simple, the processing is convenient, and it is widely used. It can be used in harsh conditions such as high temperature and high pressure It can be used under certain conditions and is easy to overhaul. However, in practical applications, there are defects such as low thermal efficiency, and...

Claims

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Application Information

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IPC IPC(8): F28F1/40
Inventor 李锦辉孙长庚韦刘柯杨庆兰张来勇郭慧波宋学明吴德娟毕克珍胡仲才
Owner PETROCHINA CO LTD
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