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Plate and tube type heat exchanger

A tube heat exchanger, heat exchanger technology, applied in the direction of heat exchange equipment, heat exchanger type, indirect heat exchanger, etc., can solve the problem of heat exchange efficiency reduction

Inactive Publication Date: 2013-07-03
HANGZHOU AISHIDE ENVIRONMENTAL PROTECTION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the two gases that need heat exchange flow in and out in the same direction, the heat exchange efficiency will be significantly reduced

Method used

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  • Plate and tube type heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0015] Embodiment 1: The high-temperature gas enters the heat exchanger through 3 and is discharged through 4; the low-temperature gas to be heated enters from the inlet 2 and is discharged from the outlet 1. At the bottom of 1 and 2, there is an arc-shaped transition plate, so that the gas passes through When 1 flows to 2, the wind resistance is small. The low-temperature gas flows in a sealed tube with a hexagonal structure, two ends forming a triangle, and an angle of 60 degrees. It is sealed with the vertically flowing high-temperature gas and will not cross each other. The positions of the front and rear rows of sealing tubes are mutually staggered, and the rear triangle is just in the 60 ° angle formed by the front two 60 degree angle triangles. Many rows are arranged in this way to form the section of the air inlet direction of the present invention.

[0016] This device has been used in the organic waste gas treatment device of Hangzhou Aishide Environmental Protection ...

Embodiment approach 2

[0018] Embodiment 2: On the basis of Embodiment 1, the air inlet 2 enters, and the 2 cycles before and after exiting from the outlet 1 are changed to 3, 4, and 5 cycles, so that the heat exchange efficiency is higher; when the wind direction changes, There are arc transition plates to reduce wind resistance. However, the more times the wind changes direction, the more wind resistance will increase.

Embodiment approach 3

[0019] Embodiment 3: The plate surface is pressurized with lentil-shaped pattern 5, which not only has the effect of strengthening the plate surface, but also can be used as a wind diversion and diversion function. The cross-sectional view is as follows image 3 As shown, the lentil-shaped pattern is as Figure 4 shown.

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Abstract

The invention provides a plate and tube type heat exchanger. Heat exchange elements are formed by pressing cold rolled plates or stainless steel plates; and the plate and tube type heat exchanger has the characteristics of a plate type heat exchanger and a tube type heat exchanger. The plate and tube type heat exchanger is characterized in that each heat exchange element adopts a hexagon structure after being formed; the two ends of the heat exchange element are triangular, have the angle of 60 degrees and serve an air distributing function; under the guide of the two ends, the six edges of the heat exchange element can be fully in contact with a fluid so as to improve the utilization ratio of heat exchange plate faces; and a lentil-type pattern is pressed on each heat exchange plate face, not only has the function of strengthening the plate face, but also can serve air distributing and flow guiding functions. Therefore, compared with an ordinary plate type exchanger, the exchanger with the structure has the advantages that the strength of the plate faces are high, the thermal deformation is small, the contact area between the plate faces and the fluid is large, the usable area of heat exchange is enlarged, the air distributing effect is good, and the fluid is subjected to air distribution and redistribution repeatedly, flows in S-shaped directions, stays for a long time and is distributed uniformly so as to improve the efficiency of heat exchange.

Description

technical field [0001] The invention relates to a plate-tube heat exchanger, which is applied to heat exchange between gas and gas, especially to a heat exchange device for preheating hot gas treated by a waste gas treatment device and waste gas to be treated, and belongs to the technical field of energy saving. Background technique [0002] With the rapid development of the domestic printing and packaging industry, the number of coating machines, paint coating lines, iron printing coating lines, and color aluminum coating production lines is increasing. According to statistics, China accounts for 60% of the world's single-color aluminum coating production lines. . Existing coating machines, paint coating lines, iron printing coating lines, and color aluminum coating production lines have low intake and exhaust concentrations, and catalytic combustion cannot reach the concentration of reactive power operation. Improving the heat exchange efficiency between the hot gas treat...

Claims

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Application Information

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IPC IPC(8): F28D7/00F28F3/04
Inventor 王永桂
Owner HANGZHOU AISHIDE ENVIRONMENTAL PROTECTION EQUIP
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