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An Inclined and Vertical Composite Bow-Shaped Baffle Heat Exchanger with No Flow Dead Zone

A flow dead zone and baffle technology, applied in indirect heat exchangers, heat exchanger types, heat exchanger shells, etc., can solve the problem of insufficient space utilization in the shell side, large flow dead zone on the shell side, heat transfer efficiency reduction and other problems, to achieve the effect of eliminating the flow dead zone problem, reducing the pressure drop on the shell side, and enhancing the heat transfer capacity

Active Publication Date: 2021-07-27
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the traditional bow-shaped baffle heat exchanger has a simple structure and is widely used as a heat exchanger. However, the bow-shaped baffle heat exchangers in the prior art often have many shortcomings, such as: large flow dead zone on the shell side, The flow resistance is large, and the fluid vertically scouring the tube bundle will cause the tube bundle to vibrate. The existence of the shell-side flow dead zone makes the shell-side easy to foul and the space in the shell-side is not fully utilized, resulting in a decrease in heat transfer efficiency.

Method used

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  • An Inclined and Vertical Composite Bow-Shaped Baffle Heat Exchanger with No Flow Dead Zone
  • An Inclined and Vertical Composite Bow-Shaped Baffle Heat Exchanger with No Flow Dead Zone
  • An Inclined and Vertical Composite Bow-Shaped Baffle Heat Exchanger with No Flow Dead Zone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] according to Figure 1 to Figure 13 A tilted and vertical compound bow-shaped baffle heat exchanger shown without flow dead zone includes a shell 1 and a head 2, the shell 1 is connected to the head 2, and the shell The body 1 is respectively connected with the shell-side fluid inlet connection pipe 3 and the shell-side fluid outlet connection pipe 4, and the said head 2 is respectively connected with the tube-side fluid inlet connection pipe 5 and the tube-side fluid outlet connection pipe 6, and it is characterized in that the shell The body 1 is provided with several groups of compound arcuate baffle groups and several longitudinally arranged heat exchange tubes 7, and said compound arcuate baffle groups are provided with heat exchange tubes arranged in cooperation with said heat exchange tubes 7. The heat pipe hole, each group of said compound bow-shaped baffle group main body includes inclined baffles 8 and vertical baffles 9 arranged in an up-and-down dislocation,...

Embodiment 2

[0052] Such as Figure 9 and Figure 10 As shown, the difference between this embodiment and Embodiment 1 is that the vertical baffles 9 and the inclined baffles 8 occupy the full circle of the radial projection of each group of compound arc baffles. 70%-80%, and there is an axial overlap area of ​​20%-30% between the vertical baffle 9 and the inclined baffle 8.

[0053] Compared with Embodiment 1, this embodiment further restricts the inclined baffles 8 and vertical baffles 9 to avoid reverse leakage of fluid, thereby avoiding the situation that seriously affects the performance of the heat exchanger.

Embodiment 3

[0055] Such as image 3 , Figure 11 and Figure 13 As shown, the heat exchange tubes 7 are dislocated up and down in the shell side in an equilateral triangle distribution, and the vertical baffles 9 and the inclined baffles 8 pass through the One side of the body 1 is connected to the pull rod 13 in the axial overlapping area, and the pull rod 13 between two adjacent vertical baffles 9 or the inclined baffles 8 is sleeved with a sleeve 14, so The casing 14 is connected with the vertical baffle 9 and the inclined baffle 8 .

[0056] Compared with Embodiment 1, this embodiment further limits the heat exchange tube 7, thereby optimizing the heat exchange capacity of the heat exchanger, and through the tie rod 13 and the sleeve 14, the vertical baffle 9 and the inclined baffle are connected. The baffles 8 are fixed to prevent the vertical baffles 9 and the inclined baffles 8 from moving.

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PUM

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Abstract

The invention relates to an inclined and vertical compound bow-shaped baffle heat exchanger without flow dead zone, which includes a shell and a head, the shell is connected to the head, and it is characterized in that the shell is equipped with Several groups of composite arched baffles and several longitudinally arranged heat exchange tubes, the composite arched baffles are provided with heat exchange tube holes, and each group of composite arched baffles includes oblique baffles plate and vertical baffles, vertical baffles are arranged on the inclined baffles, inclined baffles are arranged on the vertical baffles, and each group of composite arcuate baffles is close to the shell A tapered drainage hole is provided obliquely on one side. The invention provides a non-conductive pump with reduced flow dead zone, reduced shell-side fluid pressure drop, reduced pump power loss, suppressed tube bundle vibration, simple structure, convenient manufacturing and processing, easy engineering promotion and application, and high overall heat transfer efficiency. Inclined and vertical compound bow-shaped baffle heat exchanger with flow dead zone.

Description

technical field [0001] The invention relates to a shell-and-tube heat exchanger, in particular to an inclined and vertical compound bow-shaped baffle heat exchanger with excellent structure and no flow dead zone. Background technique [0002] With the rapid development of economy and industry, energy shortage has become a bigger and bigger problem, so energy conservation, emission reduction and effective use of energy have become a topic that cannot be ignored. Among them, the heat exchanger can not only reasonably adjust the temperature of the process medium to meet the needs of the process, but also an effective device for waste heat and waste heat recovery and utilization. At present, the traditional bow-shaped baffle heat exchanger has a simple structure and is widely used as a heat exchanger. However, the bow-shaped baffle heat exchangers in the prior art often have many shortcomings, such as: large flow dead zone on the shell side, The flow resistance is relatively la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/16F28F9/22F28F9/24
CPCF28D7/1638F28F9/22F28F9/24F28F2009/228
Inventor 董聪丁铭叶阳辉叶超卜钟鸣郭文文李珂黄永丽
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY