CN2379770Y

CN2379770Y - Corrugated heat exchange tube

Info

Publication number: CN2379770Y
Application number: CN 99216010
Authority: CN
Inventors: 严培义; 郑建岳
Original assignee: NINGBO GUANGSHA HEATING POWER COMPLETE SET EQUIPMENT CO Ltd
Current assignee: Sinopec Luoyang Guangzhou Engineering Co Ltd
Priority date: 1999-07-14
Filing date: 1999-07-14
Publication date: 2000-05-24
Anticipated expiration: 2009-07-14

Abstract

The utility model relates to a corrugated heat exchange tube, which is especially suited for being used in the heat exchangers used in the petrochemical engineering industry, the thermal power industry, the metallurgy industry, the petroleum industry, etc. The utility model is composed of a tube body with corrugation, and the tube wall thickness S of the tube body is not less than 1 mm. The longitudinal section of the tube body is in a continuous double corrugated arrangement that a circular arc-shaped wave peak is smoothly connected with two adjacent circular arc-shaped wave troughs through two connection lines. The maximum distance epsilon between the wave peak and the wave troughs is from 0.5 mm to 3 mm, and the wave peak occupies 1/3-1/6 of the whole wave distance. The utility model is aptly made of the material of tube wall with any thickness and has the advantages of easy manufacture, low cost, high heat transfer coefficient, small thermal stress, large use range, larger bearing pressure and small tube voltage drop, and is suitable for the pass of more ropy medium.

Description

Corrugated tube

The utility model relates to the major part in a kind of heat exchanger, is specially adapted to industries such as petrochemical industry, thermoelectricity, metallurgy, oil and uses corrugated tube in the heat exchanger.

The patent No. 96206042.9 " slim dual damascene shape heat exchange element " also provides a kind of corrugated tube, but it only is suitable for using under the less situation of in light-wall pipe and the pipe viscosity of institute's flow media, otherwise will produce clogging, so limitation is arranged.

The purpose of this utility model is to provide a kind of corrugated tube, and thermal stress is little, the heat transfer coefficient height, and non-scaling, suitable material with any thickness tube wall is made, and the scope of application is wide.

The utility model be achieved in that corrugated tube by the band ripple body form, and its pipe thickness of described body S 〉=1mm, the longitudinal section of body is for being arranged the continuous dual damascene shape that the trough slyness of the crest of circular arc and two adjacent circular arcs connects into by two connecting lines, ultimate range between crest, trough is ε=0.5～3mm, and crest accounts for the 1/3-1/6 of the whole pitch of waves.

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

Fig. 2. the partial enlarged drawing of Fig. 1.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

Pitch of waves P=5～40mm, pipe thickness S 〉=1mm.

Crest (2) is the circular arc that shape is identical, both sides are symmetrical, and maximum is body (a 4) outer diameter D, and crest (2) accounts for the 1/3-1/6 of whole pitch of waves P.

Trough (3) is the circular arc that shape is identical, both sides are symmetrical, and the ultimate range between crest (2), trough (3) is ε=0.5～3mm.

The radius of curvature of crest (2), trough (3) can be identical, also can be different.

Connecting line (1) is the oblique line of the identical symmetry of slope.

The cross section of body (4) is circular, and the longitudinal section is for being arranged the continuous dual damascene shape that trough (3) slyness of the crest (2) of circular arc and two adjacent circular arcs connects into by two connecting lines (1).

This heat exchanger tube can be installed and used on the heat exchanger of various different structures.

The utility model is compared with prior art: because of between the crest on this heat exchanger tube, trough apart from peak value Little, so the not quite suitable material by any thickness tube wall of ripple magnitude is made, therefore enlarged the scope of application, And easily make, reduced processing charges, and thermal stress is little, heat transfer coefficient height, no limitation. Simultaneously than The medium of suitable thickness is by heat exchanger tube, can bear big pressure, tube voltage drop is little.

Claims

1. corrugated tube, body by the band ripple is formed, it is characterized in that body (4) pipe thickness S 〉=1mm, the longitudinal section of body (4) is for being arranged the continuous dual damascene shape that trough (3) slyness of the crest (2) of circular arc and two adjacent circular arcs connects into by two connecting lines (1), ultimate range between crest (2), trough (3) is ε=0.5～3mm, and crest (2) accounts for the 1/3-1/6 of the whole pitch of waves.

2. heat exchanger tube according to claim 1, the cross section that it is characterized in that body (4) is for circular, connecting line (1) is the oblique line of the identical symmetry of slope, trough (3) is that shape is identical, the circular arc of both sides symmetry, and crest (2) is the circular arc that shape is identical, both sides are symmetrical, maximum is body (a 4) outer diameter D, the radius of curvature of crest (2), trough (3) can be identical, also can be different, and pitch of waves P=5～40mm.