CN2188745Y

CN2188745Y - Bidirectional strengthening efficient heat exchanger

Info

Publication number: CN2188745Y
Application number: CN 94228267
Authority: CN
Inventors: 王胜江; 姜国华; 张晔
Original assignee: ENGINEERING MACHINERY PLANT OF LIMING ENGINE-MAKING Co SHENYANG
Current assignee: ENGINEERING MACHINERY PLANT OF LIMING ENGINE-MAKING Co SHENYANG
Priority date: 1994-04-08
Filing date: 1994-04-08
Publication date: 1995-02-01
Anticipated expiration: 2004-04-08

Abstract

The utility model relates to an improvement of a shell-and-tube type heat exchanger. Based on the existing shell-and-tube type heat exchanger, the utility model adopts diameter change tube type heat exchange tube bundles which are designed along the waveform asymmetrically. A shell side adopts baffling rods which are disposed between tube bundles. The utility model has easy and feasible property and long service life and is capable of reducing the noise of the vibration. Because the flow resistance is reduced, the zoom effect is increased greatly, the onflow state is pricked up, the heat exchange efficiency can be improved five times and the energy consumption is reduced.

Description

Bidirectional strengthening efficient heat exchanger

The utility model relates to oil, chemical industry, pharmacy, thermoelectric engineering with the improvement of various shell-and-tube heat exchanger structures and the raising of technical performance.

Shell-and-tube heat exchanger mainly is made up of the heat-exchanging tube bundle in housing and the housing, and the inside and outside stream respectively of heat exchanger tube has the cold medium of thermal medium and circulation.As everyone knows, common heat exchanger tube is to be made by smooth pipe, and the heat exchange effect is bad.Chinese patent CN90213536.8 discloses a kind of new construction, has projection on its heat exchanger tube, and the heat exchange effect increases, and still, this projection generally has straightway and along the waveform symmetry setting.Like this, the out-of-date convergent-divergent effect of MEDIA FLOW is little, and especially the very little stress that causes easily of its switching R is concentrated.In addition, this patent adopts deflector means, and the shell side flow resistance is bigger, and heat exchanger tube passes deflection plate, during work between pipe and the plate vibrations cause very big noise, pipe easy damaged.The pipe heat exchanger that Fushun machinery plant produces, the shell side flow resistance is less after the employing rod baffle, but its heat exchanger tube tube wall is level and smooth, the out-of-date convergent-divergent effect of MEDIA FLOW is very little.

The purpose of this utility model is to provide a kind of scaling effect very big, and the shell side flow resistance is less, high-efficient low-noise, bidirectional strength metalized envelope formula heat exchanger simple in structure.

The purpose of this utility model is achieved in that the projection on the heat exchanger tube is set to asymmetric shape along waveform, promptly by three waney garden arc R ₁, R ₂, R ₃Form R ₁＜R ₂＜R ₃, value and the caliber of these three R are proportional.It is out-of-date that this has guaranteed when MEDIA FLOW, can form very big convergent-divergent effect, and be difficult for causing stress to concentrate.In order further to increase turbulence state, shell side adopts between the tube bank and arranges rod baffle.The cross section of rod baffle adopts oblate, makes waney heat exchanger tube be easy to assembling, and guarantees when work, and heat exchanger tube has a crest to be under the fixing of rod baffle all the time.Adopt this device not only to reduce flow resistance, and eliminated the vibrations that the side knock tube bank causes.

The utility model is owing to adopted asymmetric reducing type heating surface bank, and shell side adopts interbank layout rod baffle, so flow resistance significantly reduces, and heat exchange efficiency can improve five times, the operating energy resource consumption of the equipment that greatly reduces.The utility model is simple for structure, has both made under big thermal (temperature difference) stress effect, also expansion joint can be set, and reduces the vibrations noise, has prolonged service life.

Further specify below in conjunction with accompanying drawing.

Fig. 1 is the utility model vapour--the structural representation of water-to-water heat exchanger.

Fig. 2 is the A portion schematic diagram of Fig. 1.

Fig. 3 is the utility model heat exchanger tube partial schematic diagram.

In the accompanying drawings, 1. be housing, 2. for guide shell, 4. for the thermal medium import, 8. for thermal medium outlet, 6. for cold medium import, 7. be cold media outlet, 5. be the rod baffle of flat garden tee section, being right-angled intersection in housing arranges, its width B equals the numerical value of a wavelength L, be B=L, thickness t=0.25L.Certainly, the rod baffle cross section can be solid, also can be hollow.For guaranteeing that heat exchanger tube has a crest to be fixed by rod baffle all the time, can get B greater than L.3. be the heat exchanger tube made from materials such as stainless steels, wherein along waveform by R ₁, R ₂, R ₃Constitute projection 9., L is the waveform pitch, and D is a caliber.These three R sizes depend on D and R ₁＜R ₂＜R ₃Specifically can be with reference to following table:

Claims

1, a kind of by housing 1., guide shell 2., heat exchanger tube 3., the thermal medium import 4., rod baffle 5., cold medium import 6., cold media outlet 7., the shell-and-tube heat exchanger 8. formed of thermal medium outlet, it is characterized in that:

The projection that 3. a, heat exchanger tube are gone up is 9. by three not isometrical garden arc R ₁, R ₂, R ₃, form;

It is oblate that b, rod baffle cross section 5. is.

2, according to the described shell-and-tube heat exchanger of claim 1., it is characterized in that R ₁＜R ₂＜R ₃

3, according to claim 1. and 2. described shell-and-tube heat exchangers, it is characterized in that: rod baffle cross section 5. can be the arc switching of garden, rectangle two ends, and the long limit of rectangle is t for the B minor face.

4, according to claim 1. and 2. described shell-and-tube heat exchangers, it is characterized in that 5. width B 〉=L of rod baffle.