CN201429348Y

CN201429348Y - Corrugated tube type heat exchanger

Info

Publication number: CN201429348Y
Application number: CN2009200293401U
Authority: CN
Inventors: 张希孔; 韩吉中
Original assignee: Zibo Wanchang Chemical Equipment Co Ltd
Current assignee: Zibo Wanchang Chemical Equipment Co Ltd
Priority date: 2009-07-07
Filing date: 2009-07-07
Publication date: 2010-03-24
Anticipated expiration: 2019-07-07

Abstract

The utility model relates to a corrugated tube type heat exchanger. In the technical scheme, a heat exchanging tube bundle can consist of corrugated tubes which are provided with arcs with equal diameters and are alternatively arranged coaxially, continuously and tangentially with equal spacing or unequal spacing, or consist of corrugated tubes which are provided with arcs with equal or unequal diameters and are alternatively arranged coaxially, continuously and tangentially with equal spacing or unequal spacing. With the special design of wave peaks and troughs, the fluid can form strong turbulence during flowing, the heat transfer coefficient is improved by twice to three times compared with the traditional tube row type heat exchanger, no plugging or scaling can easily occur, and the solid particles in the medium can not easily deposit to form the scale in operation. Under the influence of the medium temperature difference, a minus amount of axial stretching deformation can be generated in operation, the linear expansion coefficients of the scale layer and the heat exchanging tube bundle are significantly different from each other, and the pull-off force can be generated, therefore the scale if any can automatically break and fall off. The utility model also has the advantages of large channel, low pressure drop and no congestion and also has the automatic compensation function. With the wave peaks and troughs, when being heated, the utility model can reduce the thermal stress with no requirements for additional expansion joints, thereby simplifying the product structureand improving the product reliability.

Description

A kind of corrugated tube heat exchanger

Technical field

The utility model belongs to the tubular heat exchanger category, is specifically related to a kind of corrugated tube heat exchanger.

Background technology

Now be on active service tubular heat exchanger in device, its heat exchanger tube mostly is traditional smooth straight greatly, and the deficiency of its existence is that heat exchange efficiency is lower, easily fouling and obstruction.

The utility model content

Goal of the invention of the present utility model is to improve prior art tubular heat exchanger above shortcomings, a kind of corrugated tube heat exchanger of design.

The utility model is implemented by following technical solution:

Design a kind of corrugated tube heat exchanger, comprise the heat-exchanging tube bundle that is arranged on the housing internal tube plate, it is characterized in that: described heat-exchanging tube bundle is made of helical corrugation tube bank or node tube bank.

Above-mentioned a kind of corrugated tube heat exchanger is characterized in that described helical corrugation tube bank is to be made of the tangent bellows of the coaxial equidistant continuously dislocation of isometrical circular arc.

Above-mentioned a kind of corrugated tube heat exchanger is characterized in that described helical corrugation tube bank is to be made of the coaxial tangent bellows that equidistantly do not misplace continuously of isometrical circular arc.

Above-mentioned a kind of corrugated tube heat exchanger is characterized in that described node tube bank is to be made of the coaxial continuously equidistant tangent bellows tube of not isometrical circular arc.

Above-mentioned a kind of corrugated tube heat exchanger is characterized in that described node tube bank is to be made of the coaxial not equidistant continuously tangent bellows tube of not isometrical circular arc.

The utility model has the advantages that:

1. heat transfer efficiency height

The utility model relies on helical bellows or special crest and the trough design of bellows tube, when being flowed, fluid forms strong turbulent flow because the inside and outside cross section of pipe continuously suddenlys change, form strong disturbance, improved the heat transfer coefficient of heat exchanger tube, its heat transfer coefficient is higher 2～3 times than traditional tubular heat exchanger.

2. be difficult for stopping up and fouling

The utility model is in running, and the inside and outside medium of pipe is in the high turbulence state, and the solia particle in the medium is difficult to deposit fouling; Be subjected to the medium temperature difference influence simultaneously, helical bellows or bellows tube can produce the axial stretching distortion of trace, the inside and outside curvature of pipe can change thereupon, because the linear expansion coefficient of dirt layer and helical bellows or bellows tube differs bigger, so can produce bigger pulling-out force between dirt and the heat exchanger tube, even there is the incrustation scale of deposition also can break automatically and come off; Pipe passage is big simultaneously, and pressure drop is little, energy-saving effect is obvious, does not also have blockage problem.

3. has automatic compensation function

Because the helical bellows that the utility model adopts or the special construction shape of bellows tube, the existence of crest and trough strengthens its axial stretching ability, make it under the situation of being heated, can effectively reduce thermal stress, need not add expansion joint, thereby simplified product structure, improved reliability of products.

Description of drawings

Fig. 1 is an overall structure form schematic diagram of the present utility model;

Fig. 2 is the structural form schematic diagram of its helical bellows;

Fig. 3 is the structural form schematic diagram of its bellows tube.

The specific embodiment

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

Among Fig. 1, the 1st, outer cover of heat exchanger; The 2nd, tube sheet; The 3rd, bobbin carriage (end socket); 4,5 is respectively the feed liquid import and export; 6, the 7th, the heat transferring medium import and export; The 8th, heat exchanger tube (helical bellows or bellows tube); 9-1,9-2 are the shell side deflection plates that is installed in respectively in the outer cover of heat exchanger; A portion shows heat exchanger tube installation form schematic diagram.

Among Fig. 2, the 10th, the crest portion of helical bellows; The 11st, the trough portion of helical bellows; B is the partial schematic sectional view of helical bellows.

Among Fig. 3, the 12nd, the crest portion of bellows tube; The 13rd, the trough portion of bellows tube.

Make for example: earlier according to instructions for use, process required helical bellows or bellows tube (heat exchanger tube) 8, the tubular heat exchanger manufacture method is made corrugated tube heat exchanger routinely again, the joint portion of heat exchanger tube 8 and tube sheet 2, can adopt welding or expand tube method to fix, again shell 1 is covered and connect bobbin carriage 3 (end socket) butt joint; Feed liquid import and

export

4,5 and heat transferring medium import and

export

6,7 are gone up in welding respectively, suppress, test, and the utility model manufacturing of qualified back is finished.

Through on probation in a plurality of clients, compare with routine common " light pipe " tubular heat exchanger, heat transfer rate improves about 2～3 times, Both inherit the advantages such as tubular heat exchanger is firm, durable, safe, reliable, overcome again poor, the easy knot of its exchange capability of heat simultaneously The shortcomings such as dirt; Reached energy efficient, raised the efficiency, be difficult for stopping up, less scaling, the expection goal of the invention that operates steadily.

Claims

1. a corrugated tube heat exchanger comprises the heat-exchanging tube bundle that is arranged on the housing internal tube plate, it is characterized in that: described heat-exchanging tube bundle is made of helical corrugation tube bank or node tube bank.

2. according to the described a kind of corrugated tube heat exchanger of claim 1, it is characterized in that described helical corrugation tube bank is to be made of the tangent bellows of the coaxial equidistant continuously dislocation of isometrical circular arc.

3. according to the described a kind of corrugated tube heat exchanger of claim 1, it is characterized in that described helical corrugation tube bank is to be made of the coaxial tangent bellows that equidistantly do not misplace continuously of isometrical circular arc.

4. according to the described a kind of corrugated tube heat exchanger of claim 1, it is characterized in that described node tube bank is to be made of the coaxial continuously equidistant tangent bellows tube of not isometrical circular arc.

5. according to the described a kind of corrugated tube heat exchanger of claim 1, it is characterized in that described node tube bank is to be made of the coaxial not equidistant continuously tangent bellows tube of not isometrical circular arc.