Efficient spiral fin heat exchange device

A technology of spiral fin and heat exchange device, which is applied in the field of boiler flue gas heat exchange, can solve the problems of low heat exchange efficiency, the heat exchange efficiency of spiral fin tubes needs to be improved, etc., and achieve the effect of improving heat exchange efficiency.

Inactive Publication Date: 2016-07-27
LIANYUNGANG ZHENGHANG ELECTRIC ENERGY CONSERVATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the current existing heat exchange equipment, spiral finned tubes are widely used because they have greatly improved the effect of expanding the heating surface and enhancing heat transfer compared with traditional finned tubes. However, because the fins are integrated in the base tube In general, the fins and the base tube are fixed, so the part of the fins that are not facing th

Method used

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  • Efficient spiral fin heat exchange device
  • Efficient spiral fin heat exchange device
  • Efficient spiral fin heat exchange device

Examples

Experimental program
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Example Embodiment

[0018] Example 1, reference Figure 1-3 , A high-efficiency spiral fin heat exchange device, comprising: a closed shell 2 with an air inlet 21 connected to the boiler flue gas pipe 1 on one side of the shell 2;

[0019] The helical fin heat exchanger whose axial direction is perpendicular to the air inlet 21 includes a water inlet tank 6 and a water outlet tank 4 respectively connected to the water inlet pipe 61 and the water outlet pipe 41, between the water inlet tank 6 and the water inlet pipe 61 A water inlet chamber 60 for buffering the flow rate of water is also provided, and a water outlet chamber 40 is provided between the outlet pipe 41 and the outlet tank 4, and a plurality of spiral fin replacements are provided between the inlet tank 6 and the outlet tank 4 Heat pipe 3, the two ends of the spiral fin heat exchange pipe 3 are respectively connected to the water inlet tank 6 and the water outlet tank 4 through roller bearings 30;

[0020] The length of the spiral fin hea...

Example Embodiment

[0023] In the second embodiment, in the high-efficiency spiral fin heat exchange device described in the first embodiment, the roller bearing 30 is a cylindrical roller bearing 30.

Example Embodiment

[0024] In embodiment 3, in the high-efficiency spiral fin heat exchange device described in embodiment 1 or 2, the spiral fin heat exchange tubes 3 are evenly distributed on the sides of the water inlet tank 6 and the water outlet tank 4.

[0025] The working principle of the invention: because the velocity of boiler flue gas from the boiler flue gas pipeline can reach 12-15m / s, it has great kinetic energy, and by setting the power heat exchange tube section, the boiler flue gas impacts the power heat exchange tube section to drive The spiral fin heat exchange tube rotates, which can reduce the kinetic energy of the boiler flue gas, reduce the speed of the boiler flue gas, and increase the number of turns of the spiral fin heat exchange tube per unit time to make the spiral fin fully contact the boiler flue gas Heat exchange increases the heat exchange area between boiler flue gas and spiral fins, and improves heat exchange efficiency; and because the rotating spiral fin heat exch...

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Abstract

The invention discloses an efficient spiral fin heat exchange device. The efficient spiral fin heat exchange device comprises a sealed shell, a spiral fin heat exchanger which is axially vertical to an air inlet, and an air outlet formed in the side, opposite to the air inlet, of the shell, wherein the air inlet connected with a boiler smoke pipeline is formed in one side of the shell; the spiral fin heat exchanger comprises a water inlet tank and a water outlet tank which are respectively connected with a water inlet pipe and a water outlet pipe; a plurality of spiral fin heat exchange tubes are arranged between the water inlet tank and the water outlet tank; the two ends of the spiral fin heat exchange tubes are respectively connected with the water inlet tank and the water outlet tank through roller bearings; the length of the spiral fin heat exchange tubes is larger than the width of the air inlet; the spiral fin heat exchange tubes comprise dynamic heat exchange tube sections opposite to the air inlet and exhaust heat exchange tube sections positioned on one side of the air inlet; and the air outlet is opposite to the exhaust heat exchange tube sections. According to the efficient spiral fin heat exchange device, the spiral fin heat exchanger can ensure that spiral fins are in full contact with boiler smoke for heat exchange, flue gas is promoted to form a turbulent current, and the heat exchange area is relatively enlarged, so that the heat exchange efficiency is improved.

Description

technical field [0001] The invention belongs to the field of boiler flue gas heat exchange, and relates to a heat exchanger, in particular to a high-efficiency spiral fin heat exchange device. Background technique [0002] In the current existing heat exchange equipment, spiral finned tubes are widely used because they have greatly improved the effect of expanding the heating surface and enhancing heat transfer compared with traditional finned tubes. However, because the fins are integrated in the base tube In general, the fins and the base tube are fixed, so the part of the fins that are not facing the front of the boiler flue gas cannot fully contact with the boiler flue gas, and the surface of the fins is smooth, and when the air passes through, the fins are easy to A boundary layer is formed, and the heat exchange efficiency between the air in the boundary layer and the fins is very low. It can be seen that the heat transfer efficiency of the spiral finned tube still ne...

Claims

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Application Information

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IPC IPC(8): F28D11/04F28F1/36
CPCF28D11/04F28F1/36
Inventor 何乃昌何星何乃通
Owner LIANYUNGANG ZHENGHANG ELECTRIC ENERGY CONSERVATION TECH
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