CN2614340Y

CN2614340Y - A heat exchange finned tube

Info

Publication number: CN2614340Y
Application number: CNU032449186U
Authority: CN
Inventors: 张慧君
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-09
Filing date: 2003-04-09
Publication date: 2004-05-05
Anticipated expiration: 2013-04-09

Abstract

The utility model has the name of heat transfer finned pipe which belongs to the field of the heat transfer technology. The utility model is utilized for providing a heat transfer finned pipe with high heat transfer rate, the fin is difficult for adhering the impurity and the utilizing life of the production can be prolonged. The utility model comprises a pipe body and a fin fixedly arranged at the inner side of the pipe body, the fin divides the pipe cavity into one or more than one through-holes and an embossment is arranged on the surface of the fin. The utility model adapts the mode of inner fin, has stronger heat conductance performance, the fin with embossment is adapted with high heat conductance performance, the surface temperature and the burning rate of the fin can be reduced and the utilizing life of the fin is prolonged. In the same condition, the heat transfer pipe of the utility model can reduce the utilizing quantity of the finned pipe, decreases the volume of the equipment and drops the manufacturing cost. The fin range direction of the inner finned pipe is same with the pipe body and the pipe cavity is divided to through-holes, when the smoke gas crosses the through hole, the fin surface with embossment is not easy to adhere with the impurity.

Description

A kind of heat-exchange finned tube

Technical field:

The utility model relates to a kind of finned tube, particularly a kind of heat-exchange finned tube.

Technical background:

At present, the heat-exchange finned tube of boiler that is used for the waste heat recovery of flue gas, waste gas is generally the pipe external finned tube, promptly adds fin in the heat exchanger tube tube wall outside, the outer side contacts of the flue gas in the cavity and finned tube, and managing the inboard is heat exchanger fluid.Because have impurity in the flue gas, the direction of motion of managing outer fin and flue gas forms an angle,, influence the heat exchange effect so the finned tube outside adheres to impurity easily.

Summary of the invention:

The purpose of this utility model is: a kind of heat-exchange finned tube is provided, and the heat exchange efficiency height be difficult for to adhere to impurity on the fin, prolongs product service life.

The utility model is achieved in that a kind of heat-exchange finned tube, comprises body and fin, and described fin is fixedly set in the body inboard, and fin is divided into one or more through hole with tube chamber.

Described fin surface has projection.

Described projection is a corrugation shape, and stupefied is parallel to body.

Described fin is parallel to each other, and the fin cross section is centre that the relative semilune combs of two crowns form and is arranged in the tube chamber with the circle of irregular through hole.

Described fin is interlaced with each other, and the fin cross section is grid-shaped and is arranged in the tube chamber.

Described fin cross section is arranged in the tube chamber radially.

Described body is tight two different metal tubes of thermal conductivity factor of socket each other.

The utility model is owing to adopt the form of pipe inner fin, this pipe external finned tube has stronger heat-conductive characteristic, show after tested, the heat conduction efficiency of pipe external finned tube is 3 times of light pipe, and the pipe internally finned tube is 5 times of light pipe, because the utility model adopts the fin that has projection, the heat-conductive characteristic height, can reduce the fin surface temperature, reduce the scaling loss degree of fin, prolong fin service life.Under equal conditions, use heat exchanger tube of the present utility model can reduce the usage quantity of finned tube, reduce equipment volume, reduce cost.The fin orientation of Qu Yuguan internally finned tube is identical with body, and tube chamber is separated into through hole, and when flue gas passed from through hole, the fin surface that has projection was difficult for adhering to impurity.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is described further.

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

Fig. 2 is the right view of Fig. 1.

Fig. 3 is a fin structure schematic diagram of the present utility model.

Fig. 4 is a kind of example structure schematic diagram of the present utility model.

Fig. 5 is an another kind of example structure schematic diagram of the present utility model.

The specific embodiment:

As depicted in figs. 1 and 2, fin 2 is fixedly set in body 1 inboard.3 through holes for the tube chamber that is separated out by fin.

Fig. 3 shows the structure of fin, and fin 2 surfaces have projection 21.

The embodiment pipe inner fin that Fig. 1 and Fig. 2 show is parallel to each other, and the fin cross section is centre that two relative semilune combs of crown form and is arranged in the tube chamber with the circle of irregular through hole.It is two half modules that the product of this shape adds man-hour, two half modules is overstock to link together again, forms the pipe inner fin, at fin overcoat upper tube body, that's all, processing technology is simple, and cost is minimized.And as can be seen from Figure 2, fin is divided into a through hole in irregular shape with tube chamber; Have corrugation shape projection on the fin, stupefied is parallel to body.

Fig. 4 is another embodiment of the present utility model, and pipe inner fin cross section is arranged in the official jargon radially.Fin is divided into 8 through holes with tube chamber.Body is tight two different metal tubes of thermal conductivity factor of socket each other.

Fig. 5 is another embodiment of the present utility model, and the pipe inner fin is interlaced with each other, and the fin cross section is grid-shaped and is arranged in the official jargon.Fin is divided into many through holes with tube chamber.

When the actual use of the utility model, this product is arranged at the position that needs heat exchange, heat-exchange gas is passed through from the body inboard, and heat exchanger fluid passes through from the body outside, and the body inner fins increases at least 5 times with heat exchange area, guarantees that heat exchange efficiency improves.Particularly the projection of fin surface scientifically increases heat exchange area, reduces small product size, easy making process.The utility model uses aluminum pipe to contact with gas interface with the aluminium fin usually, can also such as stainless steel tube, can effectively prevent electrochemical corrosion like this at metal tube that thermal conductivity factor is different of aluminum pipe outside cover certainly.The utility model product can be widely used in steam generator system and the various heat exchanger.

Claims

1. a heat-exchange finned tube comprises body and fin, it is characterized in that: described fin is fixedly set in the body inboard, and fin is divided into one or more through hole with tube chamber.

2. heat-exchange finned tube according to claim 1 is characterized in that: described fin surface has projection.

3. heat-exchange finned tube according to claim 2 is characterized in that: described projection is a corrugation shape, and stupefied is parallel to body.

4. according to claim 1 or 2 or 3 described heat-exchange finned tubes, it is characterized in that: described fin is parallel to each other, and the fin cross section is centre that the relative semilune combs of two crowns form and is arranged in the tube chamber with the circle of irregular through hole.

5. according to claim 1 or 2 or 3 described heat-exchange finned tubes, it is characterized in that: described fin is interlaced with each other, and the fin cross section is grid-shaped and is arranged in the tube chamber.

6. according to claim 1 or 2 or 3 described heat-exchange finned tubes, it is characterized in that: described fin cross section is arranged in the tube chamber radially.

7. according to claim 1 or 2 or 3 described heat-exchange finned tubes, it is characterized in that: described body is tight two different metal tubes of thermal conductivity factor of socket each other.