CN103697747A - Device and method for strengthened heat transfer of U-shaped tube heat exchanger bend section - Google Patents
Device and method for strengthened heat transfer of U-shaped tube heat exchanger bend section Download PDFInfo
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- CN103697747A CN103697747A CN201310715977.7A CN201310715977A CN103697747A CN 103697747 A CN103697747 A CN 103697747A CN 201310715977 A CN201310715977 A CN 201310715977A CN 103697747 A CN103697747 A CN 103697747A
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Abstract
The invention relates to a device and method for strengthened heat transfer of a U-shaped tube heat exchanger bend section. For a U-shaped tube heat exchanger with a shell pass being a single pass, due to the fact that the flow velocity is greatly reduced when fluid of the shell pass flows to the U-shaped tube bend section, heat transfer efficiency of the bend section is not high. The device comprises a flow guide plate body, the body comprises a flat plate (1) and a bent plate (2), the flat plate is connected with the bent plate, and the length of the lower edge of the bent plate is larger than that of the upper edge connected with the flat plate. The device and the method are used for strengthened heat transfer of the U-shaped tube heat exchanger bend section.
Description
technical field:
the present invention relates to a kind of U-shaped heat exchange of heat pipe bend loss strengthening and heat transferring device and heat transfer enhancing method.
background technology:
a key factor evaluating heat exchanger performance is heat exchange efficiency, in a heat exchanger, when heat exchanger tube length, gives regularly, and its effective heat exchange area is just constant, if will increase the heat exchange efficiency of heat exchanger, only can realize from improving the method for tube side, shell side flow velocity.The U-shaped heat exchange of heat pipe that is one way for shell side, while flowing to U-shaped pipe bend loss due to shell-side fluid, flow velocity reduces greatly, and the heat exchange efficiency of bend loss is not high, so its effective heat exchange area is generally only considered straight length, and does not consider the bend loss of U-shaped pipe.If heat exchange area does not reach expection heat transfer effect, conventional method is the length that increases straight length, or the quantity of heat exchanger tube, and in the situation that these two kinds of methods are all difficult for realizing, the heat exchange efficiency that increases pressure U shape tube bend loss is a kind of effective measures.
summary of the invention:
the object of this invention is to provide a kind of U-shaped heat exchange of heat pipe bend loss strengthening and heat transferring device and heat transfer enhancing method.
above-mentioned object realizes by following technical scheme:
a kind of U-shaped heat exchange of heat pipe bend loss augmentation of heat transfer deflector, its composition comprises: deflector body, described body comprises flat board, twisted plate, and described flat board is connected with described twisted plate, and the lower limb length of described twisted plate is greater than the length of upper edge being connected with described flat board.
a kind of heat transfer enhancing method of U-shaped heat exchange of heat pipe bend loss augmentation of heat transfer deflector, when the 4-6% of the distance shell-side cylinder interior diameter of outermost layer heat exchanger tube and shell-side cylinder internal diameter, last piece baffle gap region in U-shaped pipe one end of U-shaped heat exchange of heat pipe, four augmentation of heat transfer deflectors are set by different level, the twisted plate bending radius of deflector A is 14 ~ 15% of shell-side cylinder interior diameter, the twisted plate bending radius of deflector B is 12 ~ 13% of shell-side cylinder interior diameter, the twisted plate bending radius of deflector C is 8 ~ 9% of shell-side cylinder interior diameter, the twisted plate bending radius of deflector D is 4 ~ 6% of shell-side cylinder interior diameter, the clearance distance retaining between adjacent baffle straight section is 1.0 ~ 1.1 times of heat exchanger tube centre-to-centre spacing, fluid four the described augmentation of heat transfer deflectors of flowing through are guided the bend loss of heat exchanger tube into, fluid velocity is improved, thereby reach the effect of strong structured thermal transfer, four described augmentation of heat transfer deflectors are connected with shell-side cylinder welding or bolt.
beneficial effect:
advantage of the present invention is simple in structure, and the flow through speed of U-shaped pipe bend loss of fluid is improved, and reduces near the circulation area of fluid deflection plate, increases flow velocity, reaches the effect of strong structured thermal transfer.Do not increasing under the prerequisite of heat exchanger tube quantity, improving the heat exchange efficiency of U-shaped heat exchange of heat pipe.The straight section end layout straggly of every layer of deflector of the present invention, is convenient to fluid and flows along each layer of deflector.
accompanying drawing explanation:
accompanying drawing 1 is the structural representation of deflector of the present invention.
accompanying drawing 2 is side views of accompanying drawing 1.
accompanying drawing 3 is that baffle arrangement of the present invention is at the structural representation of U-shaped heat exchange of heat pipe bend loss.
the specific embodiment:
embodiment 1:
a kind of U-shaped heat exchange of heat pipe bend loss augmentation of heat transfer deflector, its composition comprises: deflector body, described body comprises flat board 1, twisted plate 2, and described flat board is connected with described twisted plate, and the lower limb length of described twisted plate is greater than the length of upper edge being connected with described flat board.
embodiment 2:
the heat transfer enhancing method of above-mentioned U-shaped heat exchange of heat pipe bend loss augmentation of heat transfer deflector, when the 4-6% of the distance shell-side cylinder interior diameter of outermost layer heat exchanger tube and shell-side cylinder internal diameter, last piece baffle gap region in U-shaped pipe one end of U-shaped heat exchange of heat pipe, four augmentation of heat transfer deflectors are set by different level, the twisted plate bending radius of deflector A is 14 ~ 15% of shell-side cylinder interior diameter, the twisted plate bending radius of deflector B is 12 ~ 13% of shell-side cylinder interior diameter, the twisted plate bending radius of deflector C is 8 ~ 9% of shell-side cylinder interior diameter, the twisted plate bending radius of deflector D is 4 ~ 6% of shell-side cylinder interior diameter, the clearance distance retaining between adjacent baffle straight section is 1.0 ~ 1.1 times of heat exchanger tube centre-to-centre spacing, fluid four the described augmentation of heat transfer deflectors of flowing through are guided the bend loss of heat exchanger tube into, fluid velocity is improved, thereby reach the effect of strong structured thermal transfer, four described augmentation of heat transfer deflectors are connected with shell-side cylinder welding or bolt.
embodiment 3:
described U-shaped heat exchange of heat pipe bend loss augmentation of heat transfer deflector, in order to realize above object, near last piece baffle gap of U-shaped pipe one end, arranges the structure of spiral deflector by different level in non-tube distributing area.Space size according to non-tube distributing area in shell-side cylinder radial direction, can arranging multiplayer deflector, reduces near the circulation area of fluid deflection plate, increases flow velocity.Deflector containing straight section and bending section, the straight section end layout straggly of every layer of deflector, is convenient to fluid and flows along each layer of deflector.Between adjacent baffle straight section, retain suitable gap, the size in gap equates to be advisable with the gap length between heat exchanger tube outer wall, the formed like this fluid new passage that circulates, the new resistance of circulation passage is suitable with the resistance of heat exchanger tube convection cell, is convenient to the passage that fluid enters deflector formation.Fluid after the bending section of deflector will speed up is guided the bend loss of heat exchanger tube into, and the bending radius of the deflector bending section of different levels is different, minimum near the deflector bending radius of heat exchanger tube, maximum away from the deflector bending radius of heat exchanger tube.
Claims (2)
1. a U-shaped heat exchange of heat pipe bend loss augmentation of heat transfer deflector, its composition comprises: deflector body, it is characterized in that: described body comprises flat board, twisted plate, described flat board is connected with described twisted plate, and the lower limb length of described twisted plate is greater than the length of upper edge being connected with described flat board.
2. a heat transfer enhancing method that utilizes the U-shaped heat exchange of heat pipe bend loss augmentation of heat transfer deflector described in claim 1, it is characterized in that: when the 4-6% of the distance shell-side cylinder interior diameter of outermost layer heat exchanger tube and shell-side cylinder internal diameter, last piece baffle gap region in U-shaped pipe one end of U-shaped heat exchange of heat pipe, four augmentation of heat transfer deflectors are set by different level, the twisted plate bending radius of deflector A is 14 ~ 15% of shell-side cylinder interior diameter, the twisted plate bending radius of deflector B is 12 ~ 13% of shell-side cylinder interior diameter, the twisted plate bending radius of deflector C is 8 ~ 9% of shell-side cylinder interior diameter, the twisted plate bending radius of deflector D is 4 ~ 6% of shell-side cylinder interior diameter, the clearance distance retaining between adjacent baffle straight section is 1.0 ~ 1.1 times of heat exchanger tube centre-to-centre spacing, fluid four the described augmentation of heat transfer deflectors of flowing through are guided the bend loss of heat exchanger tube into, fluid velocity is improved, thereby reach the effect of strong structured thermal transfer, four described augmentation of heat transfer deflectors are connected with shell-side cylinder welding or bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310715977.7A CN103697747B (en) | 2013-12-23 | 2013-12-23 | U-shaped heat exchange of heat pipe bend loss strengthening and heat transferring device and heat transfer enhancing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310715977.7A CN103697747B (en) | 2013-12-23 | 2013-12-23 | U-shaped heat exchange of heat pipe bend loss strengthening and heat transferring device and heat transfer enhancing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103697747A true CN103697747A (en) | 2014-04-02 |
| CN103697747B CN103697747B (en) | 2016-02-10 |
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| CN201310715977.7A Active CN103697747B (en) | 2013-12-23 | 2013-12-23 | U-shaped heat exchange of heat pipe bend loss strengthening and heat transferring device and heat transfer enhancing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312998A (en) * | 2018-07-03 | 2019-02-05 | 株式会社小松制作所 | Heat exchanger |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59225299A (en) * | 1983-06-06 | 1984-12-18 | Hitachi Ltd | Heat exchanger |
| JPS6060492A (en) * | 1983-09-14 | 1985-04-08 | Mitsubishi Heavy Ind Ltd | Heat exchanger |
| CN2372651Y (en) * | 1999-06-10 | 2000-04-05 | 江苏双良锅炉有限公司 | Changeable cross-section positive displacement heat exchanger |
| CN2378358Y (en) * | 1999-06-22 | 2000-05-17 | 王勇 | Powdery or granular materials fluidization pneumatic transport pipeline |
| CN101949659A (en) * | 2010-08-08 | 2011-01-19 | 姚光纯 | High-efficiency U-shaped heat exchanger |
| CN202403572U (en) * | 2011-12-30 | 2012-08-29 | 廊坊广厦新源石化设备制造有限公司 | Corrugated u-shaped tube bundle heat exchanger |
| CN202869314U (en) * | 2012-09-23 | 2013-04-10 | 大庆市天能波纹管制造有限公司 | Binding type wave node heat pipe exchanger |
-
2013
- 2013-12-23 CN CN201310715977.7A patent/CN103697747B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59225299A (en) * | 1983-06-06 | 1984-12-18 | Hitachi Ltd | Heat exchanger |
| JPS6060492A (en) * | 1983-09-14 | 1985-04-08 | Mitsubishi Heavy Ind Ltd | Heat exchanger |
| CN2372651Y (en) * | 1999-06-10 | 2000-04-05 | 江苏双良锅炉有限公司 | Changeable cross-section positive displacement heat exchanger |
| CN2378358Y (en) * | 1999-06-22 | 2000-05-17 | 王勇 | Powdery or granular materials fluidization pneumatic transport pipeline |
| CN101949659A (en) * | 2010-08-08 | 2011-01-19 | 姚光纯 | High-efficiency U-shaped heat exchanger |
| CN202403572U (en) * | 2011-12-30 | 2012-08-29 | 廊坊广厦新源石化设备制造有限公司 | Corrugated u-shaped tube bundle heat exchanger |
| CN202869314U (en) * | 2012-09-23 | 2013-04-10 | 大庆市天能波纹管制造有限公司 | Binding type wave node heat pipe exchanger |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312998A (en) * | 2018-07-03 | 2019-02-05 | 株式会社小松制作所 | Heat exchanger |
| CN109312998B (en) * | 2018-07-03 | 2021-05-18 | 株式会社小松制作所 | Heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN103697747B (en) | 2016-02-10 |
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