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Spiral filler strip type winding pipe heat exchanger

A wound tube type and spiral type technology, which is applied in the field of spiral pad type wound tube heat exchangers to achieve the effects of enhanced heat transfer performance, enhanced heat transfer, and increased tangential velocity

Active Publication Date: 2016-09-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of these phenomena make it impossible for the existing structure of the coiled tube heat exchanger to give full play to the characteristics of small temperature difference and high-efficiency heat transfer.

Method used

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  • Spiral filler strip type winding pipe heat exchanger
  • Spiral filler strip type winding pipe heat exchanger
  • Spiral filler strip type winding pipe heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] refer to figure 1 and figure 2 , a spiral gasket type wound tube heat exchanger, including the i-th layer of heat exchange tubes 1 and the i-1th layer of heat exchange tubes 2, the i-th layer of heat exchange tubes 1 and the i-1th layer of heat exchange tubes 2 The i-th layer of spiral flat gasket 3 and the i-th layer of spiral special-shaped gasket 4 are arranged between them, and the i-th layer of spiral flat gasket 3 controls the layer spacing P between different layers of heat exchange tubes l , the i-th layer of spiral special-shaped gasket 4 controls the tube spacing P between the heat exchange tubes of the same layer t , the i-th layer of spiral-shaped flat pads 3, the i-th layer of spiral-shaped special-shaped pads 4 make the flow channel formed between the heat exchange tube layers perpendicular to the heat exchange tubes of this layer, and the i-t...

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Abstract

A spiral filler strip type winding pipe heat exchanger comprises spiral flat filler strips and spiral special-shaped filler strips. Flow channels formed between layers of heat exchange tubes and flow channels formed between the spiral filler strips should be perpendicular to the layer of heat exchange tubes in the mounting process. According to the mounting mode of the spiral winding pipe heat exchanger, as for the ith layer, after the winding pitch and the inclination angle of locating slots of the ith layer of spiral flat filler strips and the winding pitch and the inclination angle of locating slots of the ith layer of spiral special-shaped filler strips are calculated, the number of required spiral flat filler strips of the ith layer and the number of required spiral special-shaped filler strips of the ith layer are selected; one faces of the spiral flat filler strips of the ith layer are attached to the upper surface of heat exchange tubes of the (i-1)th layer and are evenly distributed and mounted in the circumferential direction; after completion of mounting, the ith layer of heat exchange tubes are mounted in a reverse spiral mode, and mounting is carried out repeatedly in this way until the outermost layer is mounted. The spiral filler strip type winding pipe heat exchanger is good in heat transfer performance and small in resistance drop.

Description

technical field [0001] The invention relates to the technical field of wound tube heat exchangers, in particular to a spiral pad type wound tube heat exchanger. technical background [0002] The wound tube heat exchanger has the advantages of compact structure, large heat exchange area per unit volume, high pressure resistance, high heat transfer efficiency, multi-stream heat exchange, and good thermal compensation ability. The wound tube heat exchanger is formed by winding the heat exchange tubes alternately in the shape of a helix in the space between the core cylinder and the outer cylinder. The helical direction of the adjacent two layers of spiral heat exchange tubes is opposite, and a certain Shaped pads are spaced to keep a certain distance. Because its heat transfer element is a round tube, the coiled tube heat exchanger has less requirements on the pressure difference and temperature difference between different media, which reduces the difficulty of operation of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D7/02F28F13/06
CPCF28D7/024F28F13/06
Inventor 王斯民简冠平文键顾昕王声文
Owner XI AN JIAOTONG UNIV
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