Quasi-trapezoidal inclined baffle shell and tube heat exchanger

A shell-and-tube heat exchanger and baffle technology, which is applied to indirect heat exchangers, heat exchanger types, heat exchanger shells, etc., can solve the complex process and difficult production of continuous spiral baffle heat exchangers. and other problems, to achieve the effect of improving the heat transfer coefficient and comprehensive performance, reducing the pressure drop on the shell side, and improving the heat transfer coefficient

Active Publication Date: 2019-01-01
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing technology of the continuous spiral baffle heat exchanger is relatively complicated, and it is not easy to produce

Method used

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  • Quasi-trapezoidal inclined baffle shell and tube heat exchanger
  • Quasi-trapezoidal inclined baffle shell and tube heat exchanger
  • Quasi-trapezoidal inclined baffle shell and tube heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a trapezoidal inclined baffle shell-and-tube heat exchanger, including a shell, a heat exchange tube 1, a tube sheet, tie rods and a trapezoidal baffle 2, such as Figure 1~5 As shown, two adjacent sets of trapezoidal baffles 2 are arranged orthogonally, and two sets of trapezoidal baffles 2 are arranged in parallel, each group includes two parallel trapezoidal baffles 2, and the trapezoidal baffles The flow plate 2 corresponds to the heat exchange tube 1 with several holes 5 evenly distributed, the heat exchange tube 1 is arranged through the hole 5, the trapezoidal baffle 2 is arranged obliquely, and the trapezoidal baffle 2 and The heat exchange tube 1 includes an angle α=45°, and the flow state schematic diagram when the shell-side fluid flows through a set of trapezoidal baffles 2, as shown in Figure 9 As shown, after the shell-side fluid flows in one direction in one set of trapezoidal baffles 2, it flows in another direction after flowin...

Embodiment 2

[0034] Such as Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that two sets of alternate trapezoidal baffles 2 are arranged symmetrically;

Embodiment 3

[0036] Such as Figure 8 As shown, the difference between this embodiment and the above-mentioned embodiment is that each group includes three trapezoidal baffles 2, and the distance between the trapezoidal baffles 2 in each group is The quasi-trapezoidal baffles 2 in the middle of each group are cut from the two ends of the major axis by the elliptical plate, and the height is The bow-shaped plate is made; the trapezoidal baffles 2 at both ends of each group are cut from the two ends of the long axis of the elliptical plate with a height of He Gaowei made of a segmented plate, where R is the radius of the shell and the major axis of the ellipse is The minor axis is 2R.

[0037] In other embodiments, the difference from the above embodiments is that: the angle α between the trapezoidal baffle plate 2 and the heat exchange tube 1 can be set according to requirements.

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Abstract

The invention provides a trapezoidal tilted baffle plate shell and tube type heat exchanger. The exchanger comprises a shell body, heat exchange tubes, tube sheets, pull rods and trapezoidal baffle plates. Two groups of adjacent trapezoidal baffle plates are in perpendicular arrangement. Each group of trapezoidal baffle plates includes at least tow parallel trapezoidal baffle plates. The trapezoidal baffle plate is provided with a plurality of evenly distributed holes for mounting the heat exchange tubes correspondingly, which pass through the holes. The trapezoidal baffle plates are placed in a tilted mode. The rims of the trapezoidal baffle plates are provided with evenly distributed tube fixing holes for mounting the pull rods correspondingly which pass through the tube fixing holes. The pull rods are covered by the tube distance fixers in a sleeve mode. The tube distance fixers are fixed to the pull rods by bolts. The heat exchanger has the advantage of being able to effectively enhance the heat exchanging efficiency, being easily processed, and having broad application prospect.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to a trapezoidal inclined baffle shell-and-tube heat exchanger. Background technique [0002] With the rapid development of economy and industry, countries all over the world are facing the problem of energy shortage, so how to efficiently use existing energy is the focus of people's increasing attention. 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 most widely used heat exchanger is the shell and tube heat exchanger. However, due to structural reasons, there is a large flow dead zone and pressure drop along the shell side. [0003] In order to solve the above problems, in recent years, some new shell-and-tube heat exchangers using spiral baffles have been developed in the industry. The disadvan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/16F28F9/24
CPCF28D7/1607F28F9/24
Inventor 古新罗元坤熊晓朝王永庆秦晓柯
Owner ZHENGZHOU UNIV
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