CN1834566A - Grill bearing baffler of shell-and-tube heat exchanger - Google Patents
Grill bearing baffler of shell-and-tube heat exchanger Download PDFInfo
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- CN1834566A CN1834566A CN 200610033934 CN200610033934A CN1834566A CN 1834566 A CN1834566 A CN 1834566A CN 200610033934 CN200610033934 CN 200610033934 CN 200610033934 A CN200610033934 A CN 200610033934A CN 1834566 A CN1834566 A CN 1834566A
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- heat exchanger
- shell
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- grid
- baffler
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Abstract
The present invention discloses a shell-and-tube heat exchanger grille support baffle device. It includes heat exchange tube and heat exchanger shell body, also includes grille and limited ring. The described grille is one which is formed from two gralled plates which are staggered at 90deg. and alternatively arranged and has four curved fasteners and eight supporting points. The described heat exchange tube is fastened and supported by said grille, so that the strength and rigidity of the heat exchange tube can be greatly raised, and the heat exchange efficiency of the heat exchanger also is raised.
Description
Technical field
The present invention relates to the heat transmission equipment technology, specifically is a kind of grill bearing baffler of shell-and-tube heat exchanger.
Background technology
Shell-and-tube heat exchanger is the heat transmission equipment of industrial extensive uses such as chemical industry, petrochemical industry, refrigeration, power, metallurgy, pharmacy.In order to improve the heat exchange efficiency of equipment, people exchange heat pipe and have had research extensively and profoundly, and multiple efficient heat-exchanging pipe has been realized commercialization, are widely used in phase-change heat transfer and strengthen, and no phase-change heat transfer is strengthened, heat transfer process such as gas, liquid, solid three-phase stream.The efficient that only solves heat exchanger tube as a kind of heat transmission equipment is not enough, and therefore the research heat conduction reinforced to shell side arranged.The supporting of shell side and baffle means are fit to various operation operating modes.Shell side at shell-and-tube heat exchanger is provided with the supporting baffle means, promptly plays a supporting role between the tube and tube of tube bank, can change the flow direction and the flow velocity of fluid in tube bank simultaneously, can make shell-side fluid assign turbulent flow at low flow velocity, has increased film coefficient of heat transfer.Along with development of modern industry, therefore the thermic load of process separate unit heat transmission equipment and the trend of the oriented large-scale development of weight press for heat exchange efficiency height, the heat transmission equipment that fluid flow resistance is little.The shell-and-tube heat exchanger critical technical problems is that the shell side supporting and the baffle means of heat exchanger tube and lower resistance efficiently will be arranged.
Existing shell side supporting baffle means is traditional arc baffle plate, the disc-annular shape baffle plate, and bouble-bow, three arc hydraulic barriers etc., its weak point mainly is to have flow blind angle, defective that fluid resistance is big.The rod baffle shell-and-tube heat exchanger can be realized the heat transfer process of single cylinder, pure adverse current, has opened up the compact heat exchanger pioneer, and its defective is the deficiency that big tube bank, big caliber is surpassed the long relief structures intensity of 6 mitrons.
In China's metallurgical industry, annual production surpasses the shell side DN of 100kt production system conversion heat transmission equipment heat exchanger usually more than 2 meters in the electricity zinc acid making system, contain a large amount of dust and other impurity in the process gas, have sour water to separate out with dust when low temperature and form acid and mix mud and make cause dust stratification incrustation on the supporting baffle of transition heat device by touching, the corrosion of having quickened heat exchanger tube has reduced heat transfer efficiency.Rod baffle shell side supporting structure, avoid and alleviated the degree of shell side dust stratification incrustation, realized the pure counter-current operation of monoshell journey, have the heat transfer efficiency height, the characteristics that fluid resistance is little, but along with the output of process units increases, under the standard pipe spacing, along with the increase in shell footpath, the rigidity and the intensity of rod baffle obviously reduce, and especially load-bearing is a hidden danger in a deadly defect and the transportation in horizontal shell-and-tube heat exchanger.If increase the line footpath of rod baffle, certainly will bring the increase and the installation cost in heat exchanger shell footpath to increase, the single heat exchange tube of single rod baffle device has only two supporting-points, adjacent two unit also only four fulcrums in large diameter shell-and-tube heat exchanger, unavoidably have tube vibration, especially horizontal heat exchanger might produce resonance, has a strong impact on the service life of operation of heat exchanger long period of operation and equipment.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and a kind of intensity height, rigidity is strong, heat exchange efficiency is high grill bearing baffler of shell-and-tube heat exchanger are provided.
Grill bearing baffler of shell-and-tube heat exchanger of the present invention, comprise heat exchanger tube, heat exchanger shell, be characterized in also comprising grid, limit annulus, described heat exchanger tube is seized supporting on both sides by the arms by the grid multiple spot, described grid is to be arranged in the grid with four card arcs, eight supporting-points repeatedly for staggered 90 ° by two flase floors, and described every pair of flase floor is arranged in parallel with uniform distances and is welded in and limits in the annulus.
The monolateral parcel of every flase floor of described grid supports heat exchanger tube, and the wrap angle sigma of formation is determined by following formula:
α＝180°-2〔tg(t-d)/(t/2)〕，
In the formula: t is the heat exchanger tube spacing, and d is the heat exchanger tube external diameter.
The grill bearing baffler of shell-and-tube heat exchanger that the present invention proposes does not change the basic structure of existing shell-and-tube heat exchanger, adopt the grill bearing baffle means at shell side, described heat exchanger tube is seized supporting on both sides by the arms by the grid multiple spot, intensity, the rigidity of the especially big tube bank of shell-and-tube heat exchanger tube bank have been improved, make shell-side fluid reach more even distribution, prevent that heat exchanger tube produces vibration under high flow rate, thereby reach stable operation, reduce the flow resistance of shell-side fluid, improved the heat exchanger heat exchange efficiency.
The present invention can be widely used in vertical and horizontal shell-and-tube heat exchanger, shell-and-tube cooler of axial flow etc.
The present invention compared with prior art has the following advantages and effect:
1. device of the present invention, can make the above shell-and-tube heat exchanger shell side supporting of diameter (DN＞1200) and the intensity of baffle means, the raising of rigidity, prevent and reduce the tube bank that causes under the high flow rate and the vibration of whole equipment, eliminate tube bank because of load-bearing generation amount of deflection to weight.
2. device of the present invention can effectively keep the pressure equiblibrium mass distribution of shell-side fluid, and then reduces the resistance of shell-side fluid significantly, for further improving rate of flow of fluid to the film coefficient of heat transfer of strengthening shell-side fluid.
3. the present invention uses in the large diameter pipe shell heat exchanger and has its excellent Pipe bundle structure intensity and the raising of rigidity promotion heat exchange efficiency.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention.
The specific embodiment
As shown in Figure 1, grill bearing baffler of shell-and-tube heat exchanger of the present invention comprises heat exchanger tube 3, heat exchanger shell 4, grid 1, limits annulus 2, described heat exchanger tube 3 is seized supporting on both sides by the arms by grid 1 multiple spot, described grid 1 is to be arranged in the grid 1 with four card arcs, eight supporting-points repeatedly for staggered 90 ° by two flase floors, and described every pair of flase floor is arranged in parallel with uniform distances and is welded in and limits in the annulus 2.
The present invention is on the basis of shell-and-tube heat exchanger, increases grid and limits annulus.Described grid can adopt sheet material or wire rod, during the design grid, determines heat exchanger tube spacing t earlier, chooses grid sheet metal thickness δ or gauge or diameter of wire φ according to tube pitch t, makes that δ or φ are 1/2 of t.After extrusion modling, use template to dock moulding in sheet material or wire rod, be placed on then to fix in the shell-and-tube heat exchanger and get final product with limiting annulus.
Claims (2)
1. grill bearing baffler of shell-and-tube heat exchanger, comprise heat exchanger tube, heat exchanger shell, it is characterized in that also comprising grid, limit annulus, described heat exchanger tube is seized supporting on both sides by the arms by the grid multiple spot, described grid is to be arranged in the grid with four card arcs, eight supporting-points repeatedly for staggered 90 ° by two flase floors, and described every pair of flase floor is arranged in parallel with uniform distances and is welded in and limits in the annulus.
2. grill bearing baffler of shell-and-tube heat exchanger according to claim 1 is characterized in that the monolateral parcel of every flase floor of described grid supports heat exchanger tube, and institute's wrap angle sigma that forms is definite by following formula:
α＝180°-2〔tg(t-d)/(t/2)〕，
In the formula: t is the heat exchanger tube spacing, and d is the heat exchanger tube external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610033934 CN1834566A (en) | 2006-02-28 | 2006-02-28 | Grill bearing baffler of shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610033934 CN1834566A (en) | 2006-02-28 | 2006-02-28 | Grill bearing baffler of shell-and-tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1834566A true CN1834566A (en) | 2006-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610033934 Pending CN1834566A (en) | 2006-02-28 | 2006-02-28 | Grill bearing baffler of shell-and-tube heat exchanger |
Country Status (1)
| Country | Link |
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| CN (1) | CN1834566A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564206A (en) * | 2012-02-17 | 2012-07-11 | 合肥通用机械研究院 | Grid type supporting baffling device of shell-and-tube heat exchanger |
| CN103261829A (en) * | 2010-12-21 | 2013-08-21 | 林哈特公司 | A shell and tube heat exchanger |
| CN103292609A (en) * | 2013-05-22 | 2013-09-11 | 湖北壮志石化设备科技有限公司 | Shell-tube air cooler |
-
2006
- 2006-02-28 CN CN 200610033934 patent/CN1834566A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103261829A (en) * | 2010-12-21 | 2013-08-21 | 林哈特公司 | A shell and tube heat exchanger |
| CN102564206A (en) * | 2012-02-17 | 2012-07-11 | 合肥通用机械研究院 | Grid type supporting baffling device of shell-and-tube heat exchanger |
| CN103292609A (en) * | 2013-05-22 | 2013-09-11 | 湖北壮志石化设备科技有限公司 | Shell-tube air cooler |
| CN103292609B (en) * | 2013-05-22 | 2016-05-11 | 湖北壮志石化设备科技有限公司 | Shell-and-tube air cooler |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |