A 1/3 sector spiral folded baffle heat exchanger

A baffle and heat exchanger technology, which is applied to the heat exchanger shell, heat exchange equipment, lighting and heating equipment, etc. Effect of medium flow rate, thermal performance factor improvement, and heat transfer performance improvement

Active Publication Date: 2015-11-25
永春县产品质量检验所福建省香产品质量检验中心国家燃香类产品质量监督检验中心福建
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure will form an obvious triangular gap when the straight sides of two adjacent baffles are overlapped, causing the shell side fluid to form a short circuit leakage, which reduces the heat transfer performance of the heat exchanger

Method used

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  • A 1/3 sector spiral folded baffle heat exchanger
  • A 1/3 sector spiral folded baffle heat exchanger
  • A 1/3 sector spiral folded baffle heat exchanger

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Experimental program
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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0017] Referring to Figure 1 and figure 2 , a 1 / 3 fan-shaped spiral baffle heat exchanger, including 1 / 3 fan-shaped baffles, 1 / 3 fan-shaped baffles are cut from a standard ellipse, 1 / 3 fan-shaped baffles The two straight sides of the surface baffle are equal and symmetrical to the minor axis of the standard ellipse, and the angle between the 1 / 3 fan-shaped baffle It is greater than 120°, and only changes with the helix angle β of 1 / 3 fan-shaped plane baffle as follows: The plane profile of the 1 / 3 fan-shaped plane baffle is determined by the arc and two straight sides OB′, OC′, and the equation of the standard ellipse satisfies That is, the major axis diameter a and the minor axis diameter b of the ellipse are respectively a=D / cosβ, b=D, and the 1 / 3 fan-shaped baffle is based on the 1 / 3 fan-shaped plane baffle. The straight line (FD or GE) corresponding to tw...

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PUM

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Abstract

A heat exchanger with 1 / 3 fan-shaped spiral folding surface baffles comprises the 1 / 3 fan-shaped folding surface baffle plates. The 1 / 3 fan-shaped folding surface baffle plates are formed by cutting a standard oval, and two straight edges of each 1 / 3 fan-shaped folding surface baffle plate are equal and are symmetrical with the short axis of the stand oval. Due to the structural characteristic that bending surfaces are formed on two sides of each 1 / 3 fan-shaped folding surface baffle plate, every two adjacent baffle plates can make close contact with each other, a triangular notch is sealed, leakage is blocked, the spiral flow of a shell pass is more obvious, and the heat transferring performance is obviously improved.

Description

technical field [0001] The invention relates to the technical field of shell-and-tube heat exchangers with spiral baffles, in particular to a 1 / 3 fan-shaped spiral baffle heat exchanger. Background technique [0002] Shell and tube heat exchangers are widely used in heat exchange equipment due to their simple structure, reliable operation, and wide application range. Traditional shell-and-tube heat exchangers mainly use bow-shaped baffles, but they have disadvantages such as large flow resistance, flow dead zone, easy scaling, and tube bundles are easy to induce vibration damage, especially at the gaps of bow-shaped baffles. [0003] The spiral baffle heat exchanger, as a potential substitute for the bow baffle heat exchanger, basically solves the above-mentioned shortcomings of the bow baffle heat exchanger. At present, the existing spiral baffle heat exchangers on the market mainly use 1 / 4 fan-shaped baffles, and four baffles form a spiral cycle. However, in this structu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F9/24
Inventor 文键杨辉著王斯民
Owner 永春县产品质量检验所福建省香产品质量检验中心国家燃香类产品质量监督检验中心福建
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