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Plate-fin heat exchanger of brazed clamping pipe

A plate-fin heat exchanger and brazing technology, which is applied in the field of plate-fin heat exchangers, can solve the problems of high temperature resistance, poor heat transfer efficiency, and high cost, and achieve a widened material selection range, expanded application range, and high durability. Pressure boosting effect

Pending Publication Date: 2021-02-02
李建明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing plate-fin heat exchanger, because its channel is made of aluminum fins, the strength of the aluminum material is obviously reduced when the temperature is above 60°C, and it is not resistant to corrosion, so the existing plate-fin heat exchanger is not resistant high pressure, not resistant to high temperature, not resistant to corrosion, and easy to block, can withstand up to 15Mpa, and its use is limited
Therefore, in the case of high pressure, high temperature or corrosive fluids on the market, only coil heat exchangers with high cost and much poorer heat transfer efficiency can be used.

Method used

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  • Plate-fin heat exchanger of brazed clamping pipe
  • Plate-fin heat exchanger of brazed clamping pipe
  • Plate-fin heat exchanger of brazed clamping pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment one: see Figure 1~4 Shown:

[0019] A plate-fin heat exchanger with brazed pinch tubes comprises an integrally brazed plate bundle body 1 and a sealing head 2 arranged on the plate bundle body 1 .

[0020] see Figure 1~4 As shown, the plate bundle body 1 is composed of two or more layer channel units alternately stacked, at least one of the two or more layer channel units is a tube layer channel unit 11, and the other channels The unit adopts the existing ordinary layer channel unit 12 composed of fins 121, deflectors 122, seals 123 and partitions 124, such as Figure 4 shown.

[0021] see Figure 1~4 As shown, the tube layer channel unit 11 includes multiple straight tubes 111 , multiple brackets 112 and multiple connecting bars 113 .

[0022] The straight tubes 111 are arranged in parallel on a plane, and one end of each straight tube is connected to the collective inlet, and the other end is connected to the collective outlet, so that the lumens of ...

Embodiment 2

[0029] Embodiment two: see Figure 5 Shown:

[0030] A plate-fin heat exchanger with brazed pinch tubes, including an integrally brazed plate bundle body 1 and a head 2 arranged on the plate bundle body 1, the only difference from its embodiment is that: A plurality of straight pipes 111 are juxtaposed and leaned together to form a group, specifically four leaned together as a group. The support 112 and the straight pipe 111 are arranged one-to-many, Figure 5 The example is a pair of four, and the number of grooves 11211 on the bracket bar 1121 of each bracket 112 is four, corresponding to the four straight pipes 111 leaning together.

[0031] Others are the same as those in Embodiment 1, and will not be repeated here.

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PUM

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Abstract

A plate-fin heat exchanger of a brazed clamping pipe comprises a plate bundle body (1) which is formed by alternately stacking two or more than two of layer channel units, and is characterized in thatat least one of the two or more than two of layer channel units is a pipe layer channel unit (11), and the pipe layer channel unit (11) comprises a plurality of straight pipes (111), a plurality of brackets (112) and a plurality of connecting strips (113); the brackets (112) clamp the straight pipes (111) from two sides; the connecting strips (113) are linear battens and are embedded between theadjacent brackets (112); the brackets (112) and the connecting strips (113) are spliced to form a plate-shaped body; and after integral brazing forming, the two sides of the connecting strips (113) are connected with the adjacent layer channel units in a brazing mode so that the brackets (112) can clamp and fix the straight pipes (111), and the whole pipe layer channel unit (11) becomes a whole.

Description

technical field [0001] The invention relates to a plate-fin heat exchanger, in particular to a plate-fin heat exchanger with brazed clamp tubes. Background technique [0002] Plate-fin heat exchanger is a high-efficiency heat exchanger with fins as heat transfer elements. It has the characteristics of high heat transfer efficiency, compact structure, expandable heat exchange channels, large adaptability, and light weight. Therefore, , It is widely used in gas-gas, gas-liquid and liquid-liquid two or more heat exchange equipment, and is usually used in the field of air separation equipment at present. [0003] For the existing technology, please refer to the technical standard "NB / T 47006-2019 Aluminum Plate-fin Heat Exchanger". The standard plate-fin heat exchanger is composed of plate bundle body, head, connecting pipe, support and other accessories. The plate bundle body is composed of two or more layer channel units alternately stacked and integrally brazed. Taking two ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D9/00F28F9/013F28F9/26
CPCF28D9/0031F28F9/0132F28F9/26F28F2275/06F28F2275/14
Inventor 李建明
Owner 李建明