Heat exchange equipment using elliptical spiral heat exchange tubes

Abstract

The invention discloses a heat exchange device using elliptical spiral heat exchange tubes, which at least includes a tube bundle body, on which a tube sheet is arranged, and a plurality of elliptical spiral heat exchange tubes are pierced through the tube sheet; The heat pipe at least includes a pipe body, and the pipe body is surrounded to form a medium passage; the pipe body has an elliptical cross section and a spiral outer surface; the elliptical cross section divides the medium passage into two side heat exchange areas and a middle heat exchange area; The cross-sectional areas of the two side heat exchange areas are approximately the same as the cross-sectional areas of the middle heat exchange area. The heat exchange equipment using the elliptical spiral heat exchange tube of the present invention greatly improves the heat exchange efficiency of the intermediate heat exchange area because the elliptical spiral heat exchange tube is used, and the overall heat exchange efficiency of the heat exchange equipment is much higher than that of The existing heat exchange equipment has beneficial effects such as low cost and convenient manufacture, and is suitable for various industries such as petroleum, chemical industry, chemical fertilizer, boiler, pharmaceutical, food, electric power, nuclear energy, environmental protection, and heat supply.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to a heat exchange device for heat exchange. Background technique [0002] Heat exchange equipment is an important equipment widely used in many industries, and it is also one of the key equipment for energy saving and consumption reduction. As we all know, the core of the efficiency and energy saving of heat exchange equipment lies in the heat exchange tubes. [0003] At present, the most used in the world is the seamless tube of various materials, but its effectiveness has been brought into full play, so the emergence of special-shaped tubes for high-efficiency heat exchangers has greatly improved the efficiency of various heat exchange equipment , its main features are as follows: [0004] According to the GB / T24590-2009 "Heat Exchange Equipment for High Efficiency Heat Exchangers" standard, my country's current high-efficiency heat exchange tubes for heat exchange...

AI Technical Summary

Problems solved by technology

[0013] 1. Due to the specifications of cold processing equipment, the finished heat exchange tubes are greatly limited in terms of specifications and length;

[0014] 2. Due to the cold processing steps, the loss of raw materials is relatively large;

[0015] 3. Due to the complex cold processing process, the processing accuracy of the product is uneven;

[0016] 4. It is difficult to guarantee the quality of the finished product by the inspection method and inspection method of the cold processing process;

[0017] 5. Limited by the processing technology, the tube making efficiency is not high;

[0018] 6. Most of these four types of heat exchange tubes have special shapes, which bring a lot of inconvenience to the production of heat exchanger equipment such as the disposal of bellows and baffles of outer grooved tubes;

[0019]7. These four types of heat exchange tubes have been cold-worked, and there is residual stress on the tube body, which will form turbulence when the medium passes through, which strengthens the heat exchange tubes. Localized corrosion, thus having a certain negative impact on the service life of the heat exchanger equipment

[0020] Due to the above reasons, the heat exchange equipment in the prior art has entered a technical bottleneck, and it is difficult to greatly increase the heat exchange area and heat exchange efficiency, which restricts the heat exchange The development of equipment is difficult to meet the needs of the market

Images