CN101261097A - Graphite longitudinal fin flue gas heat exchange tube and its manufacture method - Google Patents
Graphite longitudinal fin flue gas heat exchange tube and its manufacture method Download PDFInfo
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- CN101261097A CN101261097A CNA2007100137771A CN200710013777A CN101261097A CN 101261097 A CN101261097 A CN 101261097A CN A2007100137771 A CNA2007100137771 A CN A2007100137771A CN 200710013777 A CN200710013777 A CN 200710013777A CN 101261097 A CN101261097 A CN 101261097A
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Abstract
The invention discloses a graphite vertical fin flue gas heat exchange tube and a production method thereof, and in particular relates to an element of a common heat exchange or transmission device and a production method thereof, belonging to the heat exchange device. The heat exchange tube comprises a tube body and a connector, and is characterized in that the tube body consists of graphite fins which are distributed lengthways on the inner graphite tube and the outside surface, the two ends of the inner graphite tube are provided with metal connectors. The heat exchange tube is made of graphite and the two ends are provided with metal connectors, the graphite is the nonmetal material with the best thermal conductivity which is about twice of the raw steel material and has good anticorrosion performance and the metal connectors solve the problem of connecting a tube or a box; therefore, the heat exchange device assembled by the graphite vertical fin flue gas heat exchange tube has the advantages of high heat exchange efficiency, corrosion resistance, small flue gas resistance force, great circulation area of the cross section, small volume of the device, low possibility of the accumulation of ash and scale, small necessary fan power, low electricity consumption and convenient maintenance, etc.
Description
Affiliated technical field
The invention belongs to a kind of heat-exchange apparatus, parts of particularly a kind of interchangeable heat exchange or heat-transfer equipment and preparation method thereof.
Background technology
The generally well-known smoke heat replacing device that generally is used for desulfurization project, in its heat exchanger tube with water as heat transfer medium, in order to strengthen the heat transfer of fume side, make the heat-exchanger rig compact conformation, install fin additional in heat exchanger tube tube bank outside usually, adopt the stagger arrangement arrangement, the shortcoming of this smoke heat replacing device is that the fume side resistance is bigger, dust stratification stops up easily, and structure is not compact, causes equipment cost and operating cost all than higher.CN2682368 discloses a kind of longitudinal finned tube smoke heat replacing device that can cool off or heat flue gas in the boiler exhaust gas desulfurization project.Its heat exchanger tube is made up of interior pipe and fin, and the outer surface of interior pipe radially is evenly equipped with a plurality of fins radially; Each fin extends along the straight line that vertically carries out of interior pipe.Because this utility model adopts longitudinal finned tube as heat exchange element, cool off or the flue gas that heats vertically flowing of finned tube longitudinally, its flue gas flow channel is axial through type, and parallels with the flow path of heat transferring medium water, it is little to have flue gas resistance, is difficult for dust stratification and obstruction; The outer rim shaped design of radially analysing and observe of longitudinal finned tube is a rectangle, and heat exchanger tube can closely be arranged, and not only compact equipment more makes flow of flue gas unobstructed, the heat transfer efficiency height.But be to use middle the discovery because the use aluminum is made heat-transfer pipe, poor corrosion resistance is not suitable for containing in the flue gas user's use of the stronger gas of various corrosivity.
Summary of the invention
It is unobstructed to the purpose of this invention is to provide a kind of flow of flue gas, the technical scheme of the novel longitudinal fin flue gas heat exchange tube of heat transfer efficiency height and corrosion-resistant long service life, and another object of the present invention provides the preparation method of this longitudinal fin flue gas heat exchange tube.
Technical scheme of the present invention is, a kind of graphite longitudinal fin flue gas heat exchange tube, this heat exchanger tube comprises body, joint, it is characterized in that: described body is made up of the graphite fins that longitudinally distributes on pipe and the outer surface in the graphite, and metal joint is equipped with at the pipe two ends in the graphite.
Pipe adopts being connected of screw thread and/or binding agent with metal joint in described.Pipe internal surface is the light face or vertical fin is arranged in the described graphite.
The described body cross section of being made up of the graphite fins that longitudinally distributes on pipe and the outer surface in the graphite is that circular inner tube outer surface is equipped with the graphite fins that longitudinally distributes radially, the terminal line track of fin is circle or rectangle, or the horizontal fin of symmetry is equipped with in the interior pipe both sides of cross section square-outside and round-inside.
The preparation method of graphite longitudinal fin flue gas heat exchange tube is characterized in that: the continuous fin that vertically distributes of the interior pipe of described body and appearance adopts an extrusion molding of mould or after inner tube outer surface processes groove the strip fin is bonded in the groove in the special-purpose extruder of inside and outside heating.
The continuous fin that vertically distributes of the interior pipe of body and appearance adopts the concrete steps of an extrusion molding of mould to be in the special-purpose extruder of inside and outside heating:
A. modulate graphite raw material,
B. raw material is added special-purpose extruder for shaping,
C. baking and curing.
The preparation method of graphite longitudinal fin flue gas heat exchange tube the special equipment of usefulness, comprise outer zone of heating, heat-insulation layer, mould, internal mold, it is characterized in that: interior zone of heating is housed in the pipe of tubulose internal mold.
Because heat exchange tube body is graphite making two ends metal joint is housed, graphite is the twice that its thermal conductivity factor of the best nonmetallic materials of thermal conductivity is about steel, and has an excellent corrosion resisting performance, metal joint has solved the connectivity problem with pipe (company) case again, therefore use the heat-exchanger rig of graphite longitudinal fin heat exchanger tube assembling disclosed by the invention to have the heat exchange efficiency height, corrosion-resistant, flue gas resistance is little, the section circulation area is big, equipment volume is little, be difficult for ash deposit and slag buildup, advantage such as demand blower fan power trifle is economized electric energy, and is easy to maintenance.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention,
Fig. 2, Fig. 3, Fig. 4, Fig. 5 are the cross sectional view of different embodiments of the invention,
Fig. 6 is the extrusion equipment schematic diagram,
Fig. 7 is that the A of Fig. 6 is to view.
Among the figure, 1. metal joint, 2. connecting thread, 3. in pipe, 4. fin, 5. fin, 6. external thermal insulation, 7. outer zone of heating 8. is heated graphite raw material, 9. tubulose internal mold, 10 interior zones of heating, 11. moulds.
The specific embodiment
The specific embodiment of the present invention is, as shown in the figure:
Embodiment 1, a kind of graphite longitudinal fin flue gas heat exchange tube, and this heat exchanger tube comprises body, joint, and its structure is: described body is made up of the graphite fins 4 that longitudinally distributes on pipe 3 and the outer surface in the graphite, and metal joint 1 is equipped with at the pipe two ends in the graphite.Metal joint adopts with interior pipe and is threaded, and between the internal thread of interior pipe and the external screw thread of metal joint adhesive layer is arranged.
Embodiment 2, a kind of graphite longitudinal fin flue gas heat exchange tube, this heat exchanger tube comprises body, joint, its structure is: described body is that the graphite fins 4 that longitudinally distributes on pipe 3 and the outer surface in the circular graphite is formed by cross section, the fin that the interior pipe of described body and outer surface prolong vertical distribution adopts an extrusion molding of mould in the special-purpose extruder of inside and outside heating, its concrete steps are:
A. modulate graphite raw material,
B. raw material is added special-purpose extruder for shaping,
C. baking and curing.
The preparation method of graphite longitudinal fin flue gas heat exchange tube the special equipment of usefulness, comprise outer zone of heating 7, heat-insulation layer 6, mould 11, internal mold 9, zone of heating 10 in wherein being equipped with in the pipe of tubulose internal mold.Manage two ends installation metal joint 1 after extruding body in graphite, metal joint adopts with interior pipe and is threaded, and between the internal thread of interior pipe and the external screw thread of metal joint adhesive layer is arranged.
Claims (7)
1. graphite longitudinal fin flue gas heat exchange tube, this heat exchanger tube comprises body, joint, it is characterized in that: described body is made up of the graphite fins that longitudinally distributes on pipe and the outer surface in the graphite, and metal joint is equipped with at the interior two ends of managing of graphite.
2. according to the determined graphite longitudinal fin flue gas heat exchange tube of claim 1, it is characterized in that: pipe adopts being connected of screw thread and/or binding agent with metal joint in described.
3. according to the determined graphite longitudinal fin flue gas heat exchange tube of claim 1, it is characterized in that: pipe internal surface is the light face or vertical fin is arranged in the described graphite.
4. according to the determined graphite longitudinal fin flue gas heat exchange tube of claim 1, it is characterized in that: the described body cross section of being made up of the graphite fins that longitudinally distributes on pipe and the outer surface in the graphite is that circular inner tube outer surface is equipped with the graphite fins that longitudinally distributes radially, the terminal line track of fin is circle or rectangle, or the horizontal fin of symmetry is equipped with in the interior pipe both sides of cross section square-outside and round-inside.
5. the preparation method of the determined graphite longitudinal fin flue gas heat exchange tube of claim 1 is characterized in that: the be continuous fin that vertically distributes of the interior pipe of described body and appearance adopts an extrusion molding of mould or after inner tube outer surface processes groove the strip fin is bonded in the groove in the special-purpose extruder of inside and outside heating.
6. according to the preparation method of the determined graphite longitudinal fin flue gas heat exchange tube of claim 5, it is characterized in that: the continuous fin that vertically distributes of the interior pipe of described body and appearance adopts an extrusion molding of mould in the special-purpose extruder of inside and outside heating, concrete steps are:
A. modulate graphite raw material,
B. raw material is added special-purpose extruder for shaping,
C. baking and curing.
7. the used special equipment of the preparation method of the determined graphite longitudinal fin flue gas heat exchange tube of claim 6 comprises outer zone of heating, heat-insulation layer, mould, internal mold, it is characterized in that: interior zone of heating is housed in the pipe of tubulose internal mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100137771A CN101261097A (en) | 2007-03-09 | 2007-03-09 | Graphite longitudinal fin flue gas heat exchange tube and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100137771A CN101261097A (en) | 2007-03-09 | 2007-03-09 | Graphite longitudinal fin flue gas heat exchange tube and its manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101261097A true CN101261097A (en) | 2008-09-10 |
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| CNA2007100137771A Pending CN101261097A (en) | 2007-03-09 | 2007-03-09 | Graphite longitudinal fin flue gas heat exchange tube and its manufacture method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458810A (en) * | 2014-12-18 | 2015-03-25 | 山东大学 | Thermodynamic method based flue gas engineering acid dew point measurement device |
| CN105806100A (en) * | 2016-04-18 | 2016-07-27 | 刘利平 | Coaxial fin type heat exchanger |
| CN107152674A (en) * | 2017-06-23 | 2017-09-12 | 江西南方锅炉股份有限公司 | A kind of My heat recovery |
| CN108592058A (en) * | 2018-04-15 | 2018-09-28 | 杨静民 | A kind of pipe heat exchanger structure and its manufacturing method |
| CN108800724A (en) * | 2018-08-15 | 2018-11-13 | 天津商业大学 | The air-cooler that six sides of pipe triangular fin one are arranged symmetrically |
| CN110425920A (en) * | 2019-08-28 | 2019-11-08 | 南通晨光石墨设备有限公司 | Graphite heat exchanger |
-
2007
- 2007-03-09 CN CNA2007100137771A patent/CN101261097A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458810A (en) * | 2014-12-18 | 2015-03-25 | 山东大学 | Thermodynamic method based flue gas engineering acid dew point measurement device |
| CN105806100A (en) * | 2016-04-18 | 2016-07-27 | 刘利平 | Coaxial fin type heat exchanger |
| CN107152674A (en) * | 2017-06-23 | 2017-09-12 | 江西南方锅炉股份有限公司 | A kind of My heat recovery |
| CN108592058A (en) * | 2018-04-15 | 2018-09-28 | 杨静民 | A kind of pipe heat exchanger structure and its manufacturing method |
| CN108800724A (en) * | 2018-08-15 | 2018-11-13 | 天津商业大学 | The air-cooler that six sides of pipe triangular fin one are arranged symmetrically |
| CN110425920A (en) * | 2019-08-28 | 2019-11-08 | 南通晨光石墨设备有限公司 | Graphite heat exchanger |
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Open date: 20080910 |