CN2359652Y

CN2359652Y - Heat exchanger tube with internal spread fin

Info

Publication number: CN2359652Y
Application number: CN 99223325
Authority: CN
Inventors: 张甲贵
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-31
Filing date: 1999-03-31
Publication date: 2000-01-19
Anticipated expiration: 2009-03-31

Abstract

The utility model relates to a heat exchanger tube, particularly a heat exchanger tube with internal spread fins, in which the side having high heat conductive coefficient has small surface area, and the side having low medium heat conductive coefficient has large surface area so that the heat exchange of different media is basically balanced. The utility model is composed of a tube and fins, wherein, the fins and a fin supporting tube are arranged in the tube, and one end of the fin supporting tube, which is arranged on the center of the tube, is provided with a tube plug, the fin supporting tube supports the fins, the fins are arranged on the periphery of the inner wall of the tube to form a cylinder, and the fins are closely matched with the tube and the fin supporting tube. The utility model has the advantages of high heat exchange efficiency, increase of the temperature of cooling water, water saving, low cost, etc.

Description

Inside Spreading Wing Heat Exchanger Tube

The utility model relates to the heat exchanger tube that carries out the heat transmission between a kind of tube fluid and extratubal fluid, and Inside Spreading Wing Heat Exchanger Tube is a kind of heat exchanger tube with the inner surface that can improve the pipe heat transfer performance.It is applicable to that thermal conductivity factor differs tens times friendship thermal medium, to guarantee exchange equilibrium, is mainly used in the gas-liquid exchange, is widely used in the compressed-air actuated cooling of industries such as chemical pharmaceutical, power plant, weaving.

The heat exchanger that present domestic routine is used is tubular heat exchanger, spiral-plate heat exchanger, owing to above-mentioned heat exchanger is the specific characteristic that pipe is inside and outside and heat exchange area equates, causes thermal conductivity factor two exchange medias exchange imbalance mutually far short of what is expected and do not reach desirable switching purpose.Thereby need secondary, three exchanges.Example: compressor need dispose charge air cooler and aftercooler, can not once exchange success.Secondly owing to hand over thermal power not high, the cold that makes cooling water can not make full use of and cause a large amount of wastes.The exhaust temperature of national regulation cooling water permission at present is 30 ℃, can not hand over heat to come in the water of same volume most of heat of compression.

The exchanged form that adopts the abduction fin is arranged at present, though strengthened area but neither be very desirable, because the air resistance that ordinary circumstance is cooled is little, and it is straight-through to walk the tube side straight line, cooling water is walked shell side, misses one's aim like this, if gas is walked shell side, cooling water is walked tube side, and then air drag is big and bulky.

The purpose of this utility model is to overcome the shortcoming and defect that existing Tube Sheet of Heat Exchanger exists, a kind of Inside Spreading Wing Heat Exchanger Tube is proposed, a kind of must pass through to manage inboard and the extremely low present situation of thermal conductivity factor are arranged in two kinds of heat exchange mediums, hand over hot side to amass in addition balance by adding in the bassoon, reach basic perfect condition.Improve exchange power, improve the temperature of cooling water, save the consumption of cooling water.

The utility model major technique content is, the side surface area that thermal conductivity factor is high is little, and the side surface area that the medium heat conduction coefficient is low wants big, thereby reaches the basic perfect condition of different medium heat exchange, improves heat exchanger effectiveness.

Structure of the present utility model is, this Inside Spreading Wing Heat Exchanger Tube is made up of pipe and fin, fin and fin stay pipe are housed in the pipe, the central authorities that the fin stay pipe is positioned at pipe support fin, fin is the garden column around being positioned at tube wall, and fin closely cooperates with the fin stay pipe with pipe and contacts.

For preventing that the wing stay pipe is not equipped with pipe plug through the medium shoot through of heat exchange at wing stay pipe one end.

Technique effect of the present utility model is, owing in the pipe fin is housed, has therefore strengthened the inner surface of tube area, thereby has improved exchange power, has also improved the temperature of cooling water simultaneously greatly.

Reached the purpose of saving water and energy in addition, cooling water can recycle, and has improved water temperature, and cooling water outlet temperature is 50 ℃, and water temperature and environment mean temperature 50 ℃ the time differ 30 ℃ for 20 ℃, and cooling tower can come into operation, and can reach recycling.Also solved simultaneously secondary cooling problem, reduced volume has reduced floor space, has reduced cost, and its economic benefit, social benefit are very considerable, can reach 50% than the common heat exchangers water saving.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a view profile of the present utility model;

Fig. 3 is the utility model fin structure schematic diagram.

1 pipe, 2 fins, 3 fin stay pipes, 4 pipe plugs.

Realize embodiment of the present utility model as shown in the figure, this Inside Spreading Wing Heat Exchanger Tube is made up of pipe 1 and fin 2, fin 2 and fin stay pipe 3 are housed in the pipe 1, fin stay pipe 3 is positioned at pipe central authorities and supports fin, fin 2 is positioned at pipe 1 periphery of inner wall and is the garden column, and fin 2 contacts for closely cooperating with fin stay pipe 3 with pipe 1.

Fin stay pipe 2 one ends are equipped with pipe plug 4, in order to prevent from not pass through the medium shoot through of heat exchange.

The area of fin is decided on exchange media thermal conductivity factor difference.The side surface area that the medium heat conduction coefficient is high is little, and the side surface area that the medium heat conduction coefficient is low is big.For example water and air heat conduction ratio is 0.575-0.648/0.0259-0.0378 ≈ 19: 1, and area ratio in heat conducting wall both sides should be 1: 19 so.

Claims

1, Inside Spreading Wing Heat Exchanger Tube, be made up of pipe and fin, it is characterized in that being equipped with in the pipe fin and fin stay pipe, the central authorities that the fin stay pipe is positioned at pipe support fin, fin is the garden column around being positioned at tube wall, and fin closely cooperates with the fin stay pipe with pipe and contacts.

2,, it is characterized in that fin stay pipe one end is equipped with pipe plug according to the described Inside Spreading Wing Heat Exchanger Tube of claim 1.

3, according to the described Inside Spreading Wing Heat Exchanger Tube of claim 1, it is characterized in that the area of fin is decided on exchange media thermal conductivity factor difference, the side surface area that the medium heat conduction coefficient is high is little, and the side surface area that the medium heat conduction coefficient is low is big.