CN201251385Y - Shell and tube heat exchanger of trisection ellipse spiral fold baffle - Google Patents
Shell and tube heat exchanger of trisection ellipse spiral fold baffle Download PDFInfo
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- CN201251385Y CN201251385Y CNU2008200421477U CN200820042147U CN201251385Y CN 201251385 Y CN201251385 Y CN 201251385Y CN U2008200421477 U CNU2008200421477 U CN U2008200421477U CN 200820042147 U CN200820042147 U CN 200820042147U CN 201251385 Y CN201251385 Y CN 201251385Y
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Abstract
The utility model relates to a shell and tube heat exchanger of a trisection ellipse spiral fold baffle, which belongs to the field of spiral fold baffle shell and tube heat exchangers, in particular to the technical field of shell and tube heat exchangers with tubes lined in a regular triangle. In the heat exchanger, tube plates are arranged concentrically and welded on both ends of a cylindrical shell; each fold baffle is inclined in the cylindrical shell; the projection of each fold baffle accounts for about one third of the inner cross sectional circle of the cylindrical shell; each fold baffle consists of an elliptical curved side and two straight sides, wherein, one straight side which is superposed or in parallel with a major semi-axis of an ellipse tangental to the fold baffle is a reference side; the reference side is in parallel with the central connecting line of a tube hole in the tubes lined in the regular triangle, the other straight side is a bevel side; the reference side of one fold baffle of the adjacent two fold baffles is connected with the bevel side of the other fold baffle end to end; and the tube holes of each fold baffle correspond to the tube holes on the tube plates one by one. The shell and tube heat exchanger achieves the goals of high heat exchange efficiency, lower resistance loss and applicability to the form of tubes lined in the regular triangle.
Description
Technical field
The utility model relates to helical deflecting plate pipe and shell type heat exchanger, relates in particular to the technical field of the shell-and-tube heat exchanger of positive triangle arrangement stringing.
Background technology
Shell-and-tube heat exchanger is simple in structure because of it, bears the main flow pattern that the high characteristics of pressure still are heat-exchange apparatus.Though segmental baffle form processing and manufacturing commonly used is simple, has flow dead, flow resistance is bigger, and it is bigger in indentation, there tube bundle support span, shortcomings such as easy induced vibration destruction, thereby expedite the emergence of many new tube bundle support schemes, helical baffles is exactly one of them.Theoretic helical baffles is a curved surface, is difficult to make, existing abroad 1/4 ellipse/sector shaped helical baffle plate improvement project, and every layer of deflection plate is made up of 4 1/4 ellipse/segmental baffles, and headtotail can be formed the shell-side helical duct.Because what use in a large number in the shell-and-tube heat exchanger is the tube bank that the compactest equilateral triangle is arranged, and this just causes bigger difficulty to the line location at the enterprising line tilt pore of 1/4 ellipse/segmental baffle, has influenced the popularization and application of this type deflection plate.
Summary of the invention
The utility model purpose provides a kind of heat exchange efficiency height, reduces drag losses, is suitable for the trisection ellipse spiral traverse baffle shell type heat exchanger that equilateral triangle is arranged stringing.
The utility model adopts following technical scheme for achieving the above object:
The utility model comprises that cylindrical shell, tube bank, left tube sheet, right tube sheet, fluid inlet are taken over, fluid issuing is taken over, two tube sheet arranged concentric also are welded on the two ends of cylindrical shell, every pipe of tube bank all penetrates from an end tube sheet, stretch out from right tube sheet, the pipe end of each pipe all welds or expanded joint with tube sheet again; Fluid inlet is taken over, fluid issuing is taken over the side, two ends that is arranged in cylindrical shell; It is characterized in that: also comprise some deflection plates, every deflection plate is in tilted layout in cylindrical shell, the projection of every deflection plate occupy approximately cylindrical shell interior cross section circle 1/3rd, every deflection plate is made of a bent limit of ellipse and two straight flanges, wherein one overlaps with the semi-major axis of the tangent ellipse of this deflection plate or parallel straight flange is a true edge, and a pore line of centres of the equilateral triangle arrangement stringing that comprises of true edge and this deflection plate is parallel; Another is a hypotenuse; The true edge of every deflection plate and the position of hypotenuse are all in the interval naturally of tube bank; The true edge of a wherein deflection plate of adjacent two deflection plates and the hypotenuse of another piece deflection plate are end to end, and the pore on every deflection plate is corresponding one by one with the pore on the tube sheet.
Reasonablely be: the scallop of deflection plate of the present utility model is stepped.
Reasonablely be: interconnective deflection plate of the present utility model connects for the twin-feed spiral mode.
The shape of deflection plate of the present utility model is the part that the formed ellipse of housing inner cylinder face is cut on the deflection plate plane of inclination, is made of a bent limit of ellipse and two straight flanges, and wherein a straight flange is a true edge, and another is a hypotenuse; The angle on deflection plate plane and tube sheet plane is an angle of inclination beta, and the projection of every deflection plate that is in tilted layout occupies 1/3rd of the interior cross section of cylindrical shell circle approximately; The true edge that makes every deflection plate overlaps with the semi-major axis of ellipse or is parallel, and to arrange the pore line of centres of stringing parallel with the equilateral triangle that this deflection plate comprises; True edge will be a bit larger tham 120 ° with the angle of hypotenuse with the different of angle of inclination beta; The position of true edge and hypotenuse is all in the interval naturally of tube bank; The true edge of a back plate of adjacent 2 deflection plates and the hypotenuse of last block of plate are end to end.The deflection plate of trisection ellipse spiral traverse baffle shell type heat exchanger also can not strictly be separated by trisection, but the principle of pressing trisection can adopt the stairstepping limit to adapt to the interval naturally of tube bank according to the separation nearby at interval naturally of tube bank arrangement with tube bank in case of necessity.Trisection ellipse spiral traverse baffle also can adopt the twin-feed spiral mode.When being used for the U type tube bank shell-and-tube heat exchanger of equilateral triangle arrangement stringing, the interval naturally that deflection plate is restrained by the U type can be divided into 2 120 ° of subregions and 2 60 ° of subregions, and they are arranged to the center symmetry, perhaps further are reduced to 2 180 ° of subregions.
The utility model adopts technique scheme, compared with prior art has following advantage:
1, shell fluid becomes the helical flow of this programme by snakelike the flowing of segmental baffle scheme.The former flow direction constantly changes, and causing does not have the local resistance loss of contribution to conducting heat, and the latter's flow direction is constant substantially, does not have extra drag losses.Because each deflection plate has covered whole fluid passages, and strong point spacing is constant, the position progressively changes, avoided that the flow dead of segmental baffle scheme and part tube bundle support span are excessive to be easy to generate resonance and to cause the problem of flutter failure, make this programme not only heat transfer efficiency improve, flow resistance reduces, and strength condition improves.For the bigger occasion of shell-side volumetric flow rate, can adopt the twin-feed spiral deflection plate, to reduce a layer distance, dwindle the support interval of tube bank.
2, arrange the scheme of pore for equilateral triangle, owing to be arranged in the position in round one third sector shaped district with three deflection plates of one deck, a pore line of centres of the equilateral triangle arrangement stringing that the true edge that can make every deflection plate all comprises with the tangent oval semi-major axis in this deflection plate plane and with this deflection plate is parallel, because the angle of true edge and circular section is an angle of inclination beta, the spacing of vertical each the pore line of centres of direction does not change therewith, pore spacing along this direction is then slightly amplified, need be divided by cos β, the angle of true edge and hypotenuse is the monotropic function of angle of inclination beta, and hypotenuse is also parallel with the pore line of centres of other direction, thus to the line of the location of pore on the inclination deflection plate and processing than being easier to.If certainly the pore arrangement can be designed to the trisection symmetric arrangement, then rule and just process and more simplify.Even reserve certain intervals and make the situation that can not be linked to be straight line naturally at interval of the tube bank that is distributed in two zones for needs, still can solve with the method for ladder broken line.
3, compare with 1/4th ellipses/sector shaped helical baffle plate, trisection ellipse spiral traverse baffle not only is fit to the scheme that equilateral triangle is arranged pore, and finish appointed task with deflection plate number still less, bring convenience for processing, the assembling of deflection plate, because equilateral triangle is arranged the overwhelming majority that the scheme of stringing accounts for shell-and-tube heat exchanger, the utility model scheme will effectively overcome before to spiral baffle heat exchanger because of the psychology of being afraid of difficulty that deflection plate pore location difficulty causes, promote its development and popularization and application greatly.
Description of drawings
Fig. 1 is a kind of perspective view of the present utility model.
Fig. 2 is the end to end layout schematic perspective view of the utility model deflection plate.
Fig. 3 is the utility model deflection plate projection front view.
Fig. 4 is the vertical view of the utility model deflection plate.
Fig. 5 is that the A of Fig. 4 is to cutaway view.
Fig. 6 is the projection view that the deflection plate of the utility model embodiment 2 is arranged in heat exchanger.
Fig. 7 is the projection view that the deflection plate of the utility model embodiment 3 is arranged in heat exchanger.
The specific embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated:
Embodiment 1: shown in Fig. 1-5, the utility model comprises cylindrical shell 1, tube bank 2, left tube sheet 31, right tube sheet 32, fluid inlet adapter 5, fluid issuing adapter 6, left side tube sheet 31, right tube sheet 32 arranged concentric also are welded on the two ends of cylindrical shell 1, every pipe of tube bank 2 all penetrates from left tube sheet 31, stretch out from right tube sheet 32, the pipe end of each pipe all welds or expanded joints with tube sheet 3 again; Fluid inlet takes over 5, fluid issuing is taken over 6 and made things convenient for fluid to enter the even distribution behind the housing and conveniently compile fluid to be principle, to be arranged in the two ends lateral location of cylindrical shell 1; Also comprise some deflection plates 4, every deflection plate 4 is in tilted layout in cylindrical shell 1, the projection of every deflection plate 4 occupy approximately cylindrical shell 1 interior cross section circle 1/3rd; Every deflection plate 4 is made of a bent limit of ellipse and two straight flanges, and wherein a straight flange is a true edge, and another is a hypotenuse; True edge overlaps with the semi-major axis of the tangent ellipse of this deflection plate or is parallel; The true edge of a wherein deflection plate of adjacent two deflection plates 4 and the hypotenuse of another piece deflection plate are oppositely arranged, and the pore on every deflection plate 4 is corresponding one by one with the pore on the tube sheet 3.
The shape of deflection plate 4 of the present utility model is parts that the formed ellipse of housing inner cylinder face is cut on the deflection plate plane of inclination, the angle on deflection plate 4 planes and tube sheet 3 planes is an angle of inclination beta, and the projection of every deflection plate that is in tilted layout occupies 1/3rd of the interior cross section of housing circle approximately; The true edge that makes every deflection plate 4 overlaps with the semi-major axis of ellipse or is parallel, and parallel with a line of centres of each pore; True edge will be a bit larger tham 120 degree with the angle of another hypotenuse with the different of angle of inclination beta;
The position of true edge of the present utility model and the position of hypotenuse are all in the interval naturally of tube bank; The hypotenuse of the true edge of a back plate of adjacent 2 deflection plates and last block of plate is end to end on perspective view.
Embodiment 2:
As shown in Figure 6, deflection plate 4 of the present utility model also can not strictly be separated by trisection, but by the principle of trisection according to the tube bank arrangement with the separating nearby at interval naturally of tube bank, the straight flange of deflection plate 4 can adopt the stairstepping limit to adapt to the interval naturally of tube bank in case of necessity.For example need for arranging because of the multitube journey, leave at interval between some tube bank, thereby have the situation that can not be linked to be straight line naturally at interval of the tube bank that is distributed in two zones, can solve this moment according to the method with ladder broken line limit shown in Figure 6.
Embodiment 3:
As shown in Figure 7, the structure of present embodiment is applicable to the U type tube bank shell-and-tube heat exchanger of equilateral triangle arrangement stringing, this heat exchanger is mainly used in the high-temperature medium heat exchange, has less swelling heat stress, deflection plate is divided into 2 120 ° of subregions and 2 60 ° of subregions, and they are arranged to the center symmetry; Perhaps further be reduced to 2 180 ° of subregions.
Claims (3)
1, a kind of trisection ellipse spiral traverse baffle shell type heat exchanger, comprise that cylindrical shell (1), tube bank (2), left tube sheet (31), right tube sheet (32), fluid inlet are taken over (5), fluid issuing is taken over (6), two tube sheet (3) arranged concentric also are welded on the two ends of cylindrical shell (1), every pipe of tube bank (2) all penetrates from left tube sheet (31), stretch out from right tube sheet (32), the pipe end of each pipe all welds or expanded joint with tube sheet (3) again; Fluid inlet is taken over (5), fluid issuing is taken over the side, two ends that (6) are arranged in cylindrical shell (1); It is characterized in that: also comprise some deflection plates (4), every deflection plate (4) is in tilted layout in cylindrical shell (1), the projection of every deflection plate (4) occupy approximately cylindrical shell (1) interior cross section circle 1/3rd; Every deflection plate (4) is made of a bent limit of ellipse and two straight flanges, wherein one overlaps with the semi-major axis of the tangent ellipse of this deflection plate or parallel straight flange is a true edge, and a pore line of centres of the equilateral triangle arrangement stringing that comprises of true edge and this deflection plate is parallel; Another is a hypotenuse; The true edge of every deflection plate (4) and the position of hypotenuse are all in the interval naturally of tube bank; The true edge of a wherein deflection plate of adjacent two deflection plates (4) and the hypotenuse of another piece deflection plate are end to end, and the pore on the every deflection plate (4) is corresponding one by one with pore on the tube sheet (3).
2, trisection ellipse spiral traverse baffle shell type heat exchanger according to claim 1 is characterized in that the limit of above-mentioned deflection plate (4) is stepped.
3, trisection ellipse spiral traverse baffle shell type heat exchanger according to claim 1 is characterized in that above-mentioned interconnective deflection plate (4) connects for the twin-feed spiral mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200421477U CN201251385Y (en) | 2008-08-01 | 2008-08-01 | Shell and tube heat exchanger of trisection ellipse spiral fold baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200421477U CN201251385Y (en) | 2008-08-01 | 2008-08-01 | Shell and tube heat exchanger of trisection ellipse spiral fold baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251385Y true CN201251385Y (en) | 2009-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200421477U Expired - Fee Related CN201251385Y (en) | 2008-08-01 | 2008-08-01 | Shell and tube heat exchanger of trisection ellipse spiral fold baffle |
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|---|---|
| CN (1) | CN201251385Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806102A (en) * | 2016-05-31 | 2016-07-27 | 中冶焦耐工程技术有限公司 | Heat exchanger with flow guide device adopting self-supporting structure |
| CN105910462A (en) * | 2016-04-15 | 2016-08-31 | 东南大学 | Baffle plate support method using small inclination angle helical baffle plate to realize large helical lead |
-
2008
- 2008-08-01 CN CNU2008200421477U patent/CN201251385Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910462A (en) * | 2016-04-15 | 2016-08-31 | 东南大学 | Baffle plate support method using small inclination angle helical baffle plate to realize large helical lead |
| CN105806102A (en) * | 2016-05-31 | 2016-07-27 | 中冶焦耐工程技术有限公司 | Heat exchanger with flow guide device adopting self-supporting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20120801 |