A slot-type baffle lap joint structure and its calculation method for spiral baffle heat exchangers
A technology of helical baffles and baffles, applied in indirect heat exchangers, heat exchanger types, heat exchanger shells, etc. The effect of improving stability and enhancing heat exchange efficiency
Active Publication Date: 2022-05-13
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology
[0005] In order to overcome the above existing problems, the present invention provides a slot-type baffle lap joint structure and calculation method for spiral baffle heat exchangers, which can fix the baffle at the set helix angle and The degree of overlap can effectively solve the problem of unstable connection of the spiral baffles of the heat exchanger, improve the heat transfer efficiency of the heat exchanger, and reduce vibration
Method used
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[0019] The present invention will be described in detail below with reference to the accompanying drawings.
[0020] refer to figure 1 figure 2 , a slot-type baffle lap joint structure for a helical baffle heat exchanger, comprising a four-part baffle with symmetrical rectangular grooves on two straight sides and a U-shaped circular heat exchange matched with it. Tube. The quarter baffles are provided with rectangular overlapping grooves on the right-angled sides on both sides, the overlapping grooves of the baffles are staggered and overlapped, and the baffles are connected to form a spiral channel, so that the shell-side fluid flows in a spiral shape.
[0021] refer to figure 2 and image 3 , the position of the rectangular slot of the above-mentioned spiral baffle heat exchanger baffle lap joint structure needs to meet the following formula: the size of the rectangular slot needs to meet the following calculation requirements,
[0022] The vertical distance S from th...
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A slot-type baffle overlapping structure and calculation method for a spiral baffle heat exchanger, including a fan-shaped slot-type baffle and a round smooth U-shaped heat exchange tube matched with it, and a slot The calculation method of the size of the type baffle plate mainly solves the instability in the connection of the baffle plate of the existing heat exchanger, the failure to meet the user's requirements for the helix angle and the degree of overlap, the local short circuit is not conducive to heat transfer, and the heat transfer coefficient is low. question. The slot-type spiral baffle is used to replace the ordinary plane baffle, which achieves the purpose of stable connection of the spiral baffle and meets the requirements for the helix angle and the degree of overlap. The heat exchange tubes used in the heat exchanger are the same U-shaped heat exchange tubes as ordinary heat exchangers, which are arranged in a triangle without additional cost.
Description
technical field [0001] The invention relates to the technical field of helical baffle heat exchangers, in particular to a slot-type baffle lap joint structure. technical background [0002] The arcuate baffle is the most commonly used form of shell-and-tube heat exchanger baffles. It is the most widely used because of its simple form and low manufacturing cost. However, its shell-side pressure drop is large, heat transfer efficiency is low, and There are problems such as flow dead zone, which has been replaced by helical baffle heat exchangers in recent years. Helical baffle heat exchangers have the advantages of small pressure drop, high heat transfer efficiency, and not easy to scale. The two baffles are connected to each other through the sides to form a spiral channel, which improves the spiral flow degree of the fluid on the shell side, thereby increasing the comprehensive heat transfer coefficient of the heat exchanger. [0003] Spiral baffles are divided into continu...
Claims
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IPC IPC(8): F28D7/06F28F9/22F28F9/24
CPCF28D7/06F28F9/22F28F9/24F28F2009/228
Inventor 栾德玉石文昊王兆蕊卢冠龙孙立潮
Owner QINGDAO UNIV OF SCI & TECH