CN201145508Y

CN201145508Y - High-efficiency aluminum fin heat exchange tube

Info

Publication number: CN201145508Y
Application number: CNU2007201886462U
Authority: CN
Inventors: 陈善地; 舒奎林; 周杰
Original assignee: CHONGQING TIANRUI CHEMICAL ENGINEERING EQUIPMENT Co Ltd
Current assignee: CHONGQING TIANRUI CHEMICAL ENGINEERING EQUIPMENT Co Ltd
Priority date: 2007-12-25
Filing date: 2007-12-25
Publication date: 2008-11-05
Anticipated expiration: 2017-12-25

Abstract

The utility model relates to an efficient aluminum fin heat exchange pipe, which comprises planar fins (1) sleeved on the outside circumference of a parent tube (4) and provided with a plurality of parallel slits (2) and is characterized in that: the upper end or/and the lower end of each planar fin (1) is/are provided with waved fin skirt(s) (3) connected integrately with the planar fin. Because the fin-sleeved efficient aluminum fin heat exchange pipe adds waved skirts at the upper end and the lower end of each fin, turbulent flow is generated when cold air passes through the edges of the fins, thereby improving the flow characteristic of air between the fins and reinforcing heat exchange; meanwhile, the annular holes, positioned at the slits of the fins and alternately protruding towards both sides, also increase the frequency at which air flows through the fins; moreover, the efficient aluminum fin heat exchange pipe can adopt the prior hydraulic integral expansion tube process to ensure that the fins and the parent tube are formed into an interference close fit structure, thereby greatly reducing the additional contact thermal resistance generated by the slit structure on the prior fin-sleeved parent tube; in addition, the heat exchange pipe does not generate looseness and has high heat exchange efficiency and low additional contact thermal resistance.

Description

Efficient aluminium wing heat exchanger tube

Technical field

The utility model relates to a kind of aluminium wing heat exchanger tube that is used for the aerial cooler of chemical industry process for cooling, is specifically related to a kind of aluminium wing heat exchanger tube of nest plate.

Background technology

At present, the aerial cooler that is used for the petroleum chemical industry process for cooling, the aluminium wing heat exchanger tube of nest plate is that some planes aluminium fin directly is enclosed within on the parent tube of steel, and have many parallel cracking on the surface of plane fin, when cold airflow is crossed fin, the part cold airflow can be by cracking, and to increase contacting of cold air and fin, improves the heat exchange effect.Its weak point is: because fin integral body is plane, and need a pitch of fins relatively large because of what suit was processed between fin, crack though processed, but fin contacts still insufficient with heat exchange between the cold air, the heat exchange poor effect adopts the simple area that increases fin, and its effect is also little; Fin cooperates with parent tube and itself also has the gap in addition, produces bigger additional thermal contact resistance, also influences the heat exchange effect, and often loosening situation occurs.

Summary of the invention

The efficient aluminium wing heat exchanger tube that the purpose of this utility model is to provide a kind of heat exchange efficiency height, adds the little nest plate of thermal contact resistance.

The purpose of this utility model is achieved in that a kind of efficient aluminium wing heat exchanger tube, comprise the some parallel plane fins that crack that have that are enclosed within on the parent tube outer circumference, it is characterized in that: the upper end of described plane fin is or/and the corrugated fin shirt rim that is connected as a single entity is with it set up in the lower end.

Can be symmetry or asymmetric setting in the described fin shirt rim of the top and bottom of above-mentioned plane fin.

Above-mentioned plane fin also can be located alternately to protrude to both sides described cracking.

Above-mentioned plane fin can be the interference tight fit with described parent tube and is connected.

The efficient aluminium wing heat exchanger tube of the nest plate that the utility model provides is owing to the upper and lower end at the aluminium fin increases the waveform shirt rim, cold air can produce turbulent flow during by fin edges, increased disturbance, strengthened the flow behavior of air between fin, enhanced heat exchange, simultaneously fin the place of cracking be the looping pit that alternately protrudes to both sides also increased air flow through fin time number of times, destroyed the boundary layer of air of fin surface, if crack is 2, then equal 3 heat exchange, improve 7% than 1 time traditional efficient; In addition, can adopt the whole expansion tube process of existing hydraulic pressure, make fin and parent tube become interference tight fit structure, greatly reduce the aluminum current fin and be sleeved on the additional thermal contact resistance that gap structure produced on the parent tube, and can not produce loosening, it is about 10% that heat exchange efficiency improves, and the whole heat exchange efficiency of efficient aluminium wing heat exchanger tube of the present utility model improves about 18%.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the end face structure schematic diagram of embodiment of the present utility model;

Fig. 2 be Fig. 1 A-A to the sectional structure schematic diagram;

Fig. 3 is the structural representation of the heat-exchanger rig of the efficient aluminium wing heat exchanger tube composition among employing Fig. 1.

The specific embodiment

Embodiment: referring to Fig. 1, Fig. 2, a kind of efficient aluminium wing heat exchanger tube, comprise some parallel 2 the plane fins 1 of cracking that have that are enclosed within on parent tube 4 outer circumference, it is characterized in that: the corrugated fin shirt rim 3 that is connected as a single entity is with it set up in the top and bottom of described plane fin 1.

In the described fin shirt rim 3 of the top and bottom of described plane fin 1 for being symmetrical arranged.

Described plane fin 1 alternately protrudes to both sides at described 2 places of cracking.

Described plane fin 1 is connected for the interference tight fit with described parent tube 4.

In the present embodiment, some identical holes and described parent tube 4 evenly are set on the every described plane fin 1 are full of tight fit and connect to form efficient aluminium wing heat-exchanging tube bundle 7, describedly crack 2 on the described plane fin 1 between the described parent tube 4.

Heat-exchanger rig among Fig. 3 adopts the efficient aluminium wing heat-exchanging tube bundle 7 among four row Fig. 1, fixedly connected with front header 5, rear header 6 respectively in the two ends of described efficient aluminium wing heat-exchanging tube bundle 7, be connected with working medium inlet pipe 5-1 and working medium outlet pipe 5-2 respectively in the upper and lower of described front header 5, working medium enters the efficient aluminium wing heat-exchanging tube bundle 7 of last two rows by the working medium inlet pipe 5-1 of front header 5 and carries out heat exchange, the efficient aluminium wing heat-exchanging tube bundle 7 of two rows carries out heat exchange again under rear header 6 conversions flow into, after the working medium outlet pipe 5-2 outflow of front header 5.

Claims

1, a kind of efficient aluminium wing heat exchanger tube, comprise the plane fin (1) with some parallel cracking (2) that is enclosed within on parent tube (4) outer circumference, it is characterized in that: the upper end of described plane fin (1) is or/and the corrugated fin shirt rim (3) that is connected as a single entity is with it set up in the lower end.

2, efficient aluminium wing heat exchanger tube as claimed in claim 1 is characterized in that: the described fin shirt rim (3) in the top and bottom of described plane fin (1) is symmetry or asymmetric setting.

3, efficient aluminium wing heat exchanger tube as claimed in claim 1 or 2, it is held to levy and is: described plane fin (1) is located alternately to protrude to both sides described cracking (2).

4, efficient aluminium wing heat exchanger tube as claimed in claim 1 or 2, it is held to levy and is: described plane fin (1) is connected for the interference tight fit with described parent tube (4).

5, efficient aluminium wing heat exchanger tube as claimed in claim 3, it is held to levy and is: described plane fin (1) is connected for the interference tight fit with described parent tube (4).