CN104697360A - Longitudinal-flow heat exchanger supported by flow equalization helix of shell pass - Google Patents
Longitudinal-flow heat exchanger supported by flow equalization helix of shell pass Download PDFInfo
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- CN104697360A CN104697360A CN201510094142.3A CN201510094142A CN104697360A CN 104697360 A CN104697360 A CN 104697360A CN 201510094142 A CN201510094142 A CN 201510094142A CN 104697360 A CN104697360 A CN 104697360A
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Abstract
The invention discloses a longitudinal-flow heat exchanger supported by a flow equalization helix of a shell pass. The longitudinal-flow heat exchanger comprises a shell, flow equalization plates, helix supporting heat exchange pipes, distance rods, pipe boxes, a pipe pass inlet pipe, a pipe pass outlet pipe, a shell pass inlet pipe and a shell pass outlet pipe, wherein the two flow equalization plates are respectively mounted at an inlet section and an outlet section in the shell and are used as support for a pipe beam, and the flow equalization plates have the functions of uniform distribution and diversion on fluid at the inlet section and the outlet section of the shell pass, so that the fluid of the shell pass longitudinally flows in the direction of the center line of the pipe beam, and besides the leaked fluid between the pipe beam and the shell can also be decreased; the helix supporting heat exchange pipes are smooth pipes, helix support strips are winded on the outer surfaces of the helix supporting heat exchange pipes, the helix supporting heat exchange pipes are mutually supported by the helix support strips, and besides the helix support strips have a turbulent flow effect on the fluid of the shell pass, so that the convective heat exchange of the fluid of the shell pass is facilitated, no support plate is mounted at the middle parts of the whole heat exchange pipes, and the flow resistance of the fluid of the shell pass is reduced; the shell pass inlet pipe, the shell pass outlet pipe and the shell of the heat exchanger adopt tangential arrangement. The heat exchanger is simple in structure and can be widely applied to each industrial sector.
Description
Technical field
The present invention relates to a kind of shell-and-tube heat exchanger, particularly relate to a kind of shell side current-sharing spiral support longitudinal-flow heat exchanger.
Background technology
Heat exchanger in industrial processes be ensure to produce normal to run, the key equipment of recovery waste heat and economize energy, and in whole engineering, occupy comparatively great share at metal consumption, power consumption and investing.In modern chemical industry and petroleum chemical enterprise, heat exchanger weight accounts for 30 ~ 40% of gross weight of equipment, and maintenance load accounts for more than 50% of total maintenance load.Visible, the efficient design of heat exchanger and good run industrial production is economized on the use of funds, the energy and space all very important, have more significant economic benefit and social benefit in today of energy shortage increasingly.
Shell-and-tube heat exchanger with the reliability of its height and applicability, selection widely extensively, low cost and other advantages, in industry department extensive uses such as chemical industry, petrochemical industry, light industry, food, the energy and power.Along with the development of heat transfer enhancement technology, the combination property of shell-and-tube heat exchanger improves constantly.Traditional shell-and-tube heat exchanger adopts smooth pipe and single arcuate baffle plate support structure, fluid does the lateral flow perpendicular to pipe axis at shell side, there is larger transient flow zone dead band in region before and after deflection plate, make that the overall heat exchange efficiency of heat exchanger reduces, flow resistance increases, and often under large Reynold number Flow-induced vibration occurs and causes heat exchanger failure.In order to make up above-mentioned defect, develop the Novel tube bundles such as rod baffle, cavity ring and helical baffles at present both at home and abroad to support, and the Novel heat exchange pipe such as band pipe, spiral grooved tube, bellows tube, shaped telescopic tube, spiral flat tube, but these new structures have certain accommodation and condition.Importing and exporting the heat exchange area of section in order to make full use of heat exchanger shell pass, having designed external flow guiding cylinder, inner draft tube and variable cross-section diversion cylinder etc., but guide shell complex structure, during production, workload increases, and difficulty of processing increases, and the bearing capacity of shell side decreases.Therefore, the stuctures and properties of shell-and-tube heat exchanger needs to be further improved and improves, and especially makes full use of the heat exchange area that shell side imports and exports section, simplifies tube bundle support structure in shell side, improve the convection transfer rate of shell side, reduce shell-side fluid flow resistance.
Summary of the invention
The object of the invention is the technological deficiency overcoming conventional tube shell heat exchanger, the shell side current-sharing spiral support longitudinal-flow heat exchanger that a kind of structure is simple, enhanced heat exchange efficiency is high, fluid flow resistance is little is provided.
The present invention adopts following technical scheme: a kind of shell side current-sharing spiral support longitudinal-flow heat exchanger, comprises housing, homogenizing plate, spiral support heat exchanger tube, distance rod, bobbin carriage, tube side inlet/outlet pipe and shell side inlet/outlet pipe; Described homogenizing plate has two pieces, is installed on the import and export section in housing respectively; Described spiral support heat exchanger tube be its outer surface in the same way or the plain tube of reverse-winding spiral support bar, mutually support by spiral support bar between heat exchanger tube.
Described homogenizing plate is whole circular orifice, and its external diameter is slightly less than housing inner diameter 1 ~ 2mm, adopts distance rod to be fixed in housing.
No matter heat-exchanging tube bundle adopts triangle stringing or square stringing, institute's grooved hole of homogenizing plate is all along the same direction of tube core line, and slotted eye center line is horizontal direction, and the width of slotted eye equals heat exchanger tube external diameter.
The spiral support bar that described spiral support heat exchanger tube is wound around, it is highly tube pitch, and can adjust according to shell-side fluid flow during the design of its helical angle, the scope of general helical angle is at 30 ~ 60 °.
The part that described spiral support heat exchanger tube is positioned at shell side import and export section does not fill spiral support bar, and the mid portion of whole heat-exchanging tube bundle does not fill any gripper shoe.
Shell side inlet/outlet pipe and housing adopt and tangentially arrange, and namely the outer side bus of shell side inlet/outlet pipe is all tangent with housing exterior walls face.
After the present invention adopts technique scheme, compared with prior art there is following beneficial effect: one is that import and export section in heat exchanger shell installs one piece of homogenizing plate respectively, section fluid is imported and exported to shell side and produces uniform and guide functions, the leakage flow between tube bank and housing can also be reduced simultaneously; Two is that institute's grooved hole of homogenizing plate is all along the same direction of tube hub line, slotted eye center line is horizontal direction, the width of slotted eye equals heat exchanger tube external diameter, shell-side fluid is flow through from the both sides of heat exchanger tube at homogenizing plate place, and doing longitudinal flow along tube bank centerline direction, homogenizing plate also has supporting role to tube bank simultaneously; Three is described spiral support heat exchanger tubes supports mutually by spiral support bar, and spiral support bar can make shell-side fluid spin along every root heat exchanger tube surface flowing, enhances the disturbance of fluid around tube wall, energy efficient hardening shell-side fluid heat convection; Four is that whole heat-exchanging tube bundle mid portion does not fill any gripper shoe, can effectively reduce shell-side fluid flow resistance; Five is that shell side inlet/outlet pipe and housing adopt and tangentially arrange, be conducive to shell side import and export section fluid chemical field evenly and with the abundant heat exchange of this place's heat exchanger tube.
Accompanying drawing explanation
Fig. 1 is shell side current-sharing spiral support longitudinal-flow heat exchanger structural representation;
The structural representation of homogenizing plate when Fig. 2 is triangle stringing;
The structural representation of homogenizing plate when Fig. 3 is square stringing;
Fig. 4 is the three-dimensional structure schematic diagram of spiral support heat exchanger tube.
Marginal data: 1-housing; 2-self-supporting heat exchanger tube; 3-homogenizing plate; 4-distance rod; 5-tube sheet; 6-bobbin carriage; 7-shell side inlet tube; 8-shell-side outlet pipe; 9-tube side inlet tube; 10-tube side outlet; 11-plain tube; 12-spiral support bar.
Detailed description of the invention
Below in conjunction with accompanying drawing, describe the embodiment of shell side current-sharing spiral support longitudinal-flow heat exchanger in detail.
Shell side current-sharing spiral support longitudinal-flow heat exchanger, comprises housing, homogenizing plate, spiral support heat exchanger tube, distance rod, bobbin carriage, tube side inlet/outlet pipe and shell side inlet/outlet pipe.Described homogenizing plate is whole circular orifice, and its external diameter is slightly less than housing inner diameter 1 ~ 2mm, and the slotted eye center line of homogenizing plate is horizontal direction, and the width of slotted eye equals heat exchanger tube external diameter; Described spiral support heat exchanger tube is that it is highly tube pitch at plain tube outer surface in the same way or reverse-winding spiral support bar, and can adjust according to shell-side fluid flow during the design of its helical angle, the scope of general helical angle is at 30 ~ 60 °; The part that described spiral support heat exchanger tube is positioned at shell side import and export section does not fill spiral support bar, so that install homogenizing plate and connect with tube sheet.Shell side inlet/outlet pipe and housing adopt and tangentially arrange.
During heat exchanger assembling, first with at least four distance rods, the homogenizing plate of shell-side fluid entrance point and tube sheet are fixed, then homogenizing plate is inserted in housing, and tube sheet together with case weld; Then the poling from level to level from the other end of housing from bottom toward top, supports mutually by spiral support bar between heat exchanger tube, and carries out end support by the homogenizing plate exchange heat pipe of shell side fluid outlet end; After poling completes, another block tube sheet is installed, and heat exchanger tube one one is imported this tube sheet, then this tube sheet is welded with housing; Finally by the two ends bobbin carriage of Flange joint holder housing.
Above-mentioned spiral support heat exchanger tube is also replaceable is the self-supporting pipes such as bellows tube, shaped telescopic tube, spiral flat tube, but the part that all heat exchanger tubes are positioned at shell side import and export section should be smooth straight, so that install homogenizing plate and connect with tube sheet.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the present invention discloses a kind of shell side current-sharing spiral support longitudinal-flow heat exchanger, comprises housing, homogenizing plate, spiral support heat exchanger tube, distance rod, bobbin carriage, tube side inlet/outlet pipe and shell side inlet/outlet pipe; Described homogenizing plate has two pieces, is installed on the import and export section in housing respectively; Described spiral support heat exchanger tube be its outer surface in the same way or the plain tube of reverse-winding spiral support bar, mutually support by spiral support bar between heat exchanger tube.
2. shell side current-sharing spiral support longitudinal-flow heat exchanger according to claim 1, it is characterized in that, described homogenizing plate is whole circular orifice, and its external diameter is slightly less than housing inner diameter 1 ~ 2mm, adopts distance rod to be weldingly fixed in housing.
3. shell side current-sharing spiral support longitudinal-flow heat exchanger according to claim 1, it is characterized in that, no matter heat-exchanging tube bundle adopts triangle stringing or square stringing, institute's grooved hole of homogenizing plate is all along the same direction of tube core line, and slotted eye center line is horizontal direction, the width of slotted eye equals heat exchanger tube external diameter.
4. shell side current-sharing spiral support longitudinal-flow heat exchanger according to claim 1, it is characterized in that, the spiral support bar that described spiral support heat exchanger tube is wound around, it is highly tube pitch, can adjust according to shell-side fluid flow during the design of its helical angle, the scope of general helical angle is at 30 ~ 60 °.
5. shell side current-sharing spiral support longitudinal-flow heat exchanger according to claim 1, is characterized in that, the part that described spiral support heat exchanger tube is positioned at shell side import and export section does not fill spiral support bar, and the mid portion of whole heat-exchanging tube bundle does not fill any gripper shoe.
6. shell side current-sharing spiral support longitudinal-flow heat exchanger according to claim 1, is characterized in that, shell side inlet/outlet pipe and housing adopt and tangentially arrange, and namely the outer side bus of shell side inlet/outlet pipe is all tangent with housing exterior walls face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094142.3A CN104697360B (en) | 2015-03-03 | 2015-03-03 | Shell side current-sharing spiral support longitudinal-flow heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094142.3A CN104697360B (en) | 2015-03-03 | 2015-03-03 | Shell side current-sharing spiral support longitudinal-flow heat exchanger |
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| CN104697360A true CN104697360A (en) | 2015-06-10 |
| CN104697360B CN104697360B (en) | 2016-09-14 |
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| CN201510094142.3A Expired - Fee Related CN104697360B (en) | 2015-03-03 | 2015-03-03 | Shell side current-sharing spiral support longitudinal-flow heat exchanger |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823349A (en) * | 2016-05-19 | 2016-08-03 | 郑州大学 | Double-pipe-pass mixed pipe bundle heat exchanger |
| CN105823348A (en) * | 2016-05-19 | 2016-08-03 | 郑州大学 | Double-flow mixed tube bundle shell and tube heat exchanger |
| CN106802026A (en) * | 2015-11-26 | 2017-06-06 | 四川捷元科技有限公司 | Absorption refrigeration unit shallow-slot type heat exchange mechanisms |
| CN106802030A (en) * | 2015-11-26 | 2017-06-06 | 四川捷元科技有限公司 | Absorption refrigeration unit is without circulating pump refrigerant evaporator |
| CN113776375A (en) * | 2021-08-27 | 2021-12-10 | 核动力运行研究所 | Flexible support system for heat transfer tube bundle of heat exchanger |
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| JPS5811392A (en) * | 1981-07-10 | 1983-01-22 | Hitachi Ltd | Supporting structure of heat transmitting pipe for heat exchanger of heat |
| CN2760486Y (en) * | 2004-11-30 | 2006-02-22 | 中国石油化工集团公司 | Finned pipe and finned pipe type external heat collector |
| CN101040164A (en) * | 2004-10-12 | 2007-09-19 | 埃克森美孚研究工程公司 | Support system for tube bundle devices |
| CN201314800Y (en) * | 2008-10-30 | 2009-09-23 | 吴植仁 | Helical baffling fin shell and tube heat exchanger |
| CN202216587U (en) * | 2011-07-11 | 2012-05-09 | 上海科米钢管有限公司 | Heat exchanger adopting oval flat spiral heat exchange tube |
| CN204461147U (en) * | 2015-03-03 | 2015-07-08 | 郑州大学 | Shell side current-sharing spiral support longitudinal-flow heat exchanger |
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2015
- 2015-03-03 CN CN201510094142.3A patent/CN104697360B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811392A (en) * | 1981-07-10 | 1983-01-22 | Hitachi Ltd | Supporting structure of heat transmitting pipe for heat exchanger of heat |
| CN101040164A (en) * | 2004-10-12 | 2007-09-19 | 埃克森美孚研究工程公司 | Support system for tube bundle devices |
| CN2760486Y (en) * | 2004-11-30 | 2006-02-22 | 中国石油化工集团公司 | Finned pipe and finned pipe type external heat collector |
| CN201314800Y (en) * | 2008-10-30 | 2009-09-23 | 吴植仁 | Helical baffling fin shell and tube heat exchanger |
| CN202216587U (en) * | 2011-07-11 | 2012-05-09 | 上海科米钢管有限公司 | Heat exchanger adopting oval flat spiral heat exchange tube |
| CN204461147U (en) * | 2015-03-03 | 2015-07-08 | 郑州大学 | Shell side current-sharing spiral support longitudinal-flow heat exchanger |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802026A (en) * | 2015-11-26 | 2017-06-06 | 四川捷元科技有限公司 | Absorption refrigeration unit shallow-slot type heat exchange mechanisms |
| CN106802030A (en) * | 2015-11-26 | 2017-06-06 | 四川捷元科技有限公司 | Absorption refrigeration unit is without circulating pump refrigerant evaporator |
| CN105823349A (en) * | 2016-05-19 | 2016-08-03 | 郑州大学 | Double-pipe-pass mixed pipe bundle heat exchanger |
| CN105823348A (en) * | 2016-05-19 | 2016-08-03 | 郑州大学 | Double-flow mixed tube bundle shell and tube heat exchanger |
| CN105823349B (en) * | 2016-05-19 | 2018-11-02 | 郑州大学 | Two-tube-pass mixed tube bundle heat exchanger |
| CN105823348B (en) * | 2016-05-19 | 2018-11-13 | 郑州大学 | Bifilar stream mixed tube bundle shell-and-tube heat exchanger |
| CN113776375A (en) * | 2021-08-27 | 2021-12-10 | 核动力运行研究所 | Flexible support system for heat transfer tube bundle of heat exchanger |
| CN113776375B (en) * | 2021-08-27 | 2024-03-19 | 核动力运行研究所 | Flexible supporting system for heat transfer tube bundle of heat exchanger |
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| CN104697360B (en) | 2016-09-14 |
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