CN100557364C - A kind of curved surface segmental baffle shell-and-tube heat exchanger - Google Patents
A kind of curved surface segmental baffle shell-and-tube heat exchanger Download PDFInfo
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- CN100557364C CN100557364C CNB2007100655747A CN200710065574A CN100557364C CN 100557364 C CN100557364 C CN 100557364C CN B2007100655747 A CNB2007100655747 A CN B2007100655747A CN 200710065574 A CN200710065574 A CN 200710065574A CN 100557364 C CN100557364 C CN 100557364C
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Abstract
The present invention relates to a kind of curved surface segmental baffle shell-and-tube heat exchanger, comprise: the heat exchanger cylindrical shell, cylindrical shell is connected with tube sheet, heat-exchanging tube bundle is arranged in the cylindrical shell, the pore of one group of segmental baffle is passed in tube bank, the axis secured in parallel is between tube sheet, deflection plate is parallel vertically uniform fixing by pull bar and distance sink tube, pull bar and distance sink tube are fixed on the tube sheet, the tube sheet outside connects bobbin carriage, and wherein segmental baffle is the curved surface segmental baffle, and every deflection plate curved surface convex side is towards the shell-side fluid import, one group of segmental baffle breach level up and down or the arrangement of staggering of vertical left right septum forms the circuitous flow channel of fluid in cylindrical shell.The present invention has improved segmental baffle shell-side fluid velocity flow profile, increases valid circulation area, reduces " dead band ", obviously improves heat exchange efficiency, reduces pressure and fall than flat segmental baffle.
Description
Technical field
The present invention relates to a kind of shell-and-tube heat exchanger, be specifically related to improvement the segmental baffle of shell-and-tube heat exchanger.
Background technology
Shell-and-tube heat exchanger has advantages such as reliability height, adaptability, design, manufacturing and use be simple, is widely used in industrial circles such as petrochemical industry, electric power, environmental protection.Shell-and-tube heat exchanger is made up of bobbin carriage, tube sheet, housing, deflection plate, heat exchanger tube, pull bar, distance sink tube and technology adapter etc. usually.Wherein deflection plate also plays making fluid by specific channel flow except that support tube bank in the horizontal heat exchanger housing, improve shell-side fluid flow velocity, increase turbulent extent, improve the effect of heat-transfer character.Shape and the form that makes fluid flow channel in heat exchanger shell according to the heat exchanger deflection plate, existing heat exchanger deflection plate has segmental baffle and helical baffles, traditional segmental baffle is flat, it is arc to be that circular flat board is cut into breach, perpendicular to heat exchanger shell and the parallel discharging of heat exchanger tube axis, make fluid in housing, form circuitous flowing along axis, this flat segmental baffle causes that the shell-side fluid flowing velocity distribution is unreasonable, " dead band " is bigger, valid circulation area is less, and flow resistance is big.Helical baffles is that the polylith deflection plate is arranged to approximate helicoid along the housing axis, makes the shape continuous-flow in the shape of a spiral of heat exchanger shell pass fluid.As Chinese patent 200320106763.1 disclosed helical deflecting plate pipe and shell type heat exchangers, be spliced into approximate helicoid by two or four fan-shaped flat boards, though this class helical baffles makes the fluid liquid form the most reasonable, but difficulty is installed than segmental baffle, processing cost height, precision are difficult to guarantee, are unfavorable for industrial standardization, and there is leakage current in the helical flow path by the fan-shaped dull and stereotyped splicing of polylith, increases fluid resistance.
Summary of the invention
The objective of the invention is for improving segmental baffle shell-and-tube heat exchanger shell-side fluid velocity flow profile, increase valid circulation area, reducing flow resistance and " dead band " a kind of processing, installation is convenient, heat-transfer effect is good curved surface segmental baffle shell-and-tube heat exchanger are provided.
Main technical schemes: heat exchanger of the present invention comprises: the heat exchanger cylindrical shell, the side, two ends has shell-side fluid import and shell-side fluid outlet on the cylindrical shell, cylindrical shell is connected with tube sheet, heat-exchanging tube bundle is arranged in the cylindrical shell, the pore of one group of segmental baffle is passed in tube bank, the axis secured in parallel is between tube sheet, deflection plate is parallel vertically uniform fixing by pull bar and distance sink tube, pull bar and distance sink tube are fixed on the tube sheet, the tube sheet outside connects bobbin carriage, wherein said segmental baffle is a curved surface shape segmental baffle, every deflection plate curved surface convex side is towards the shell-side fluid import, segmental baffle breach level up and down or the arrangement of staggering of vertical left right septum forms the circuitous flow channel of fluid in cylindrical shell.
The composite surface that the curved surface of above-mentioned curved surface segmental baffle can be formed for arc surface, ellipsoid, by plane and arc surface or by the curved surface of different radii arc surface combination.The preferred arc surface that adopts, arc radius are according to the decision of heat exchanger cylinder internal diameter, and the arc surface radius is 0.6-3 a times of cylinder internal diameter.
Curved surface segmental baffle of the present invention is applied to shell-and-tube heat exchanger, comprises fixed tube sheet type, floating head type and U-shaped pipe heat exchanger.
Effect of the present invention: the present invention adopts curved surface shape segmental baffle, make the shell-side fluid streamline after diversed be tending towards smooth, and and two curved surface shape segmental baffles between the runner unanimity, thereby obviously improve the shell-side fluid velocity flow profile, increase valid circulation area, reduce " dead band ".Compare with flat segmental baffle, the present invention had both increased film coefficient of heat transfer and effective heat exchange area, had reduced flow resistance again.For the heat exchanger of same heat transferring medium, same specification and pattern, curved surface segmental baffle board heat exchangers provided by the invention improves 10% than common dull and stereotyped segmental baffle board heat exchangers heat exchange efficiency, and pressure falls 10%.Kept segmental baffle processing, easy for installation simultaneously, suitable standardization, the advantage that cost is low.
Description of drawings
Fig. 1 curved surface segmental baffle shell-and-tube heat exchanger structure chart
The specific embodiment:
The present invention is further described with embodiment below.But the invention is not restricted to following examples.
As shown in Figure 1, shell-and-tube heat exchanger of the present invention comprises: be placed in the cylindrical shell 3 on the saddle 9, the side, two ends has shell-side fluid import 7 and shell-side fluid outlet 11 on the cylindrical shell, the cylindrical shell two ends are fixed with tube sheet 2, the two tube sheets outside connects two bobbin carriages 1 respectively, have tube side fluid import 12 and outlet 8 on two bobbin carriages, heat-exchanging tube bundle 6 is arranged in the cylindrical shell, the pore of a suite face arch shape traverse baffle 4 is passed in tube bank, what axis was parallel is fixed between the tube sheet, the curved surface segmental baffle is by the circular dull and stereotyped breach that cuts, be processed into dull and stereotyped segmental baffle, be pressed into curved surface shapes such as circular arc or ellipse again, deflection plate is uniform vertically fixing by pull bar 10 and distance sink tube 5, every deflection plate curved surface convex side is towards the shell-side fluid import, and arrangement that segmental baffle circle lack of water is put down up and down or the vertical left right septum staggers forms the circuitous flow channel of fluid in cylindrical shell.Deflection plate shown in Figure 1 is that level is arranged up and down, that is: first segmental baffle of close shell-side fluid import pressed close to the barrel installation of inlet tube, the circle breach is level down, the suitable downward water conservancy diversion of deflection plate curved surface of fluid, second deflection plate pressed close to barrel installation down, the circle lack of water is flat up, and other deflection plates by the breach arrangement of staggering at interval, make fluid form upper and lower circuitous flow channel in cylindrical shell down or up successively.Segmental baffle arranges that promptly baffle gap is arranged vertically towards the left-hand cylinder wall or the right barrel of cylindrical shell, makes fluid form left and right circuitous flow channel in cylindrical shell about also can be vertically.
The present invention is easy for installation from processing, and the curved surface of curved surface segmental baffle preferably adopts arc surface, and the arc surface radius is 0.6-3 a times of cylinder internal diameter.Also can adopt by plane and arc surface or by the curved surface of different radii arc surface combination.
Fluid heat exchange principle of the present invention: when the present invention adopts the deflection plate level to arrange up and down, shell-side fluid enters heat exchanger shell pass by the shell-side fluid import, behind first curved surface segmental baffle water conservancy diversion, produce downward cross-current, after fluid flows to next piece deflection plate, produce cross-current upwards again, but because front and back curved surface segmental baffle composition is a curved channel, flow to consistent with the shell-side fluid behind the baffling, thereby improved the shell-side fluid velocity flow profile, increased valid circulation area, reduced " dead band ".Pass through the water conservancy diversion of a suite face arch shape traverse baffle of the layout that interlaces in housing, up and down, shell-side fluid is flowed and tube side fluid is carried out heat exchange along tubular axis is circuitous up and down, shell-side fluid after the heat exchange is from below shell side outlet outflow heat exchanger, and tube side fluid enters and discharge heat exchanger by the import and export pipe on the bobbin carriage respectively.When arranging about vertical, shell-side fluid water conservancy diversion principle is identical, the flow direction of shell-side fluid be about laterally circuitous flowing, with the tube side fluid heat exchange.
The fixed tube-sheet exchanger of petrochemical refining's station-service, heat transferring medium tube side fluid are water, and inlet temperature is that 20 ℃ of shell-side fluid are C6 oil, and inlet temperature is 120 ℃.The housing internal diameter is 800mm; Heat exchanger tube is φ 25 * 2, radical is 490, pass 8 arc surface segmental baffles, the axis secured in parallel is on the tube sheet at two ends, deflection plate circular arc camber radius is 800mm, and deflection plate thickness is 10mm, and folding segmental baffle breach level is between the upper and lower every the arrangement of staggering, baffle(s) spacing is 660mm, forms the circuitous up and down flow channel of fluid in cylindrical shell.The C6 oil temperature drops to 80 ℃ after the heat exchange.
Claims (3)
1, a kind of curved surface segmental baffle shell-and-tube heat exchanger, comprise: the heat exchanger cylindrical shell, the side, two ends has shell-side fluid import and shell-side fluid outlet on the cylindrical shell, cylindrical shell is connected with tube sheet, heat-exchanging tube bundle is arranged in the cylindrical shell, the pore of one group of segmental baffle is passed in tube bank, the axis secured in parallel is between tube sheet, deflection plate is parallel vertically uniform fixing by pull bar and distance sink tube, pull bar and distance sink tube are fixed on the tube sheet, the tube sheet outside connects bobbin carriage, it is characterized in that: described segmental baffle is a curved surface shape segmental baffle, every deflection plate curved surface convex side is towards the shell-side fluid import, and segmental baffle breach level up and down or the arrangement of staggering of vertical left right septum forms the circuitous flow channel of fluid in cylindrical shell.
According to the heat exchanger of claim 1, it is characterized in that 2, the curved surface of described curved surface segmental baffle is an arc surface, the arc surface radius is 0.6-3 a times of cylinder internal diameter.
According to the heat exchanger of claim 1, it is characterized in that 3, the curved surface of described curved surface segmental baffle is by plane and arc surface or by the curved surface of different radii arc surface combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100655747A CN100557364C (en) | 2007-04-17 | 2007-04-17 | A kind of curved surface segmental baffle shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100655747A CN100557364C (en) | 2007-04-17 | 2007-04-17 | A kind of curved surface segmental baffle shell-and-tube heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101290199A CN101290199A (en) | 2008-10-22 |
| CN100557364C true CN100557364C (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100655747A Expired - Fee Related CN100557364C (en) | 2007-04-17 | 2007-04-17 | A kind of curved surface segmental baffle shell-and-tube heat exchanger |
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| CN (1) | CN100557364C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706227B (en) * | 2009-11-27 | 2013-01-02 | 北京化工大学 | Shell-and-tube heat exchanger with un-notched traverse baffles |
| CN103256854A (en) * | 2013-06-05 | 2013-08-21 | 苏州市金翔钛设备有限公司 | Heat exchanger with supporting plates |
| CN103808175A (en) * | 2014-01-26 | 2014-05-21 | 浙江大学 | Horizontal high-pressure heat exchanger applicable to cleaning medium evaporation |
| CN103822508A (en) * | 2014-03-05 | 2014-05-28 | 宣城亨泰化工科技有限公司 | Tubular shell type heat exchanger |
| CN104132566B (en) * | 2014-07-24 | 2016-03-30 | 广州赛唯热工设备有限公司 | A kind of axial flow shell-and-plate heat recovery heat exchanger |
| CN104359344B (en) * | 2014-11-11 | 2016-05-25 | 无锡蓝海工程设计有限公司 | S type baffle heat exchanger |
| CN106017126A (en) * | 2016-07-06 | 2016-10-12 | 张家港市科华化工装备制造有限公司 | Condenser with quick baffle plate assembly and disassembly functions |
| CN106440883A (en) * | 2016-12-06 | 2017-02-22 | 无锡优耐特净化装备有限公司 | Horizontal type shell-and-tube heat exchanger |
| CN108413783B (en) * | 2017-02-10 | 2019-11-22 | 中国石化工程建设有限公司 | A kind of and tower function heat exchanger |
| CN107202037A (en) * | 2017-07-19 | 2017-09-26 | 陈宗良 | A kind of centrifugal compressed oil cooler |
| CN109539854A (en) * | 2018-11-19 | 2019-03-29 | 珠海格力电器股份有限公司 | baffle plate and shell-and-tube heat exchanger |
| CN114963802A (en) * | 2022-05-20 | 2022-08-30 | 浙江尔格科技股份有限公司 | Curved surface baffle assembly for shell-and-tube heat exchanger and shell-and-tube heat exchanger |
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2007
- 2007-04-17 CN CNB2007100655747A patent/CN100557364C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
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| CN101290199A (en) | 2008-10-22 |
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Granted publication date: 20091104 Termination date: 20180417 |