CN211028494U - Three-layer composite tube plate structure for heat exchanger - Google Patents
Three-layer composite tube plate structure for heat exchanger Download PDFInfo
- Publication number
- CN211028494U CN211028494U CN201920876873.7U CN201920876873U CN211028494U CN 211028494 U CN211028494 U CN 211028494U CN 201920876873 U CN201920876873 U CN 201920876873U CN 211028494 U CN211028494 U CN 211028494U
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- Prior art keywords
- tube sheet
- tube
- stainless steel
- heat exchanger
- tube plate
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- 239000002131 composite material Substances 0.000 title claims abstract description 39
- 239000010935 stainless steel Substances 0.000 claims abstract description 35
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 35
- 238000003466 welding Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000005269 aluminizing Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a three-layer composite tube plate structure for heat exchanger, include: basic unit's tube sheet, stainless steel tube sheet, a plurality of heat exchange tube and sealed billet, it is a plurality of the heat exchange tube penetrates the through-hole of opening on basic unit's tube sheet and the stainless steel tube sheet, form the vacuum layer between basic unit's tube sheet and the stainless steel tube sheet, basic unit's tube sheet and stainless steel tube sheet edge outside are provided with the sealed billet, the heat exchange tube all welds through seting up annular welding groove with the contact department of basic unit's tube sheet and stainless steel tube sheet, a plurality of exhaust holes have on the stainless steel tube sheet, the cooperation of exhaust hole department is equipped with sealed pin, solves the poor and poor technical problem of high temperature resistance of air seal nature among.
Description
Technical Field
The utility model belongs to the technical field of the heat transfer, especially, relate to a three-layer composite tube sheet structure for heat exchanger.
Background
The heat exchanger is a device for transferring partial heat of hot fluid to cold fluid, and plays an important role in industrial production such as metallurgy, chemical industry, petroleum, power and the like.
In a tubular (light pipe, finned tube) heat exchanger, the two ends of the heat exchange tube are generally fixed and sealed by tube plates, when tube pass fluid is high-temperature and corrosive gas, higher requirements are provided for the tightness, corrosion resistance, high temperature resistance and the like of the tube plates, and when the tube plates are made of stainless steel, the cost is greatly increased.
In the traditional design and manufacture of the double-layer composite tube plate, a composite steel plate is usually adopted or a surfacing composite steel plate is adopted to manufacture the composite tube plate, but in order to manufacture a single heat exchanger, a thicker composite steel plate is customized, so that the cost of the heat exchanger is increased; the surfacing composite tube plate is adopted, the surfacing process of the tube plate is complex, heat treatment is needed after surfacing, and the surfacing layer needs to be subjected to surface flaw detection, so that the cost is high.
In the manufacturing process of the heat exchanger, the welding process of the tube plate and the heat exchange tube is the most important welding process, and a structure that the heat exchange tube extends out of the tube plate for a certain length is often adopted, so that the flow resistance of a tube side medium of the heat exchanger is large in the using process, and dirt is easily accumulated between tube bridges; meanwhile, the root of the welding line is difficult to weld through, the strength of the welding joint is poor, and the welding line is easy to tear along with the micro vibration of the heat exchange tube in the use process, so that the air tightness is influenced.
In the traditional double-layer composite tube plate, because the two tube plates are in direct contact, the contact thermal resistance is small, the temperature born by the two tube plates is close to that of the two tube plates, the tube plate with poor temperature resistance determines the upper temperature resistance limit of the composite tube plate, and in order to reduce the manufacturing cost, carbon steel or low alloy steel is usually adopted as a base tube plate, so the high temperature resistance effect cannot be achieved.
In addition, the traditional double-layer composite tube plate can only carry out pressure testing on the double-layer tube plate at the same time, and the welding air tightness of each layer of tube plate cannot be guaranteed at the same time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a three-layer composite tube sheet structure for heat exchanger solves the poor technical problem with high temperature resistance of air-tightness among the above-mentioned prior art.
The utility model provides a technical scheme that its technical problem adopted is:
a three-layer composite tube sheet structure for a heat exchanger, comprising: basic unit's tube sheet, stainless steel tube sheet, a plurality of heat exchange tube and sealed billet, it is a plurality of the heat exchange tube penetrates the through-hole of opening on basic unit's tube sheet and the stainless steel tube sheet, form the vacuum layer between basic unit's tube sheet and the stainless steel tube sheet, basic unit's tube sheet and stainless steel tube sheet edge outside are provided with the sealed billet, the heat exchange tube all welds through seting up annular welding groove with the contact department of basic unit's tube sheet and stainless steel tube sheet, a plurality of exhaust holes have on the stainless steel tube sheet, exhaust hole department cooperation is equipped with sealed pin.
The utility model discloses a three-layer composite tube plate structure for heat exchanger, basic unit's tube sheet thickness is 30-50 mm.
The utility model discloses a three-layer composite tube plate structure for heat exchanger, the vacuum layer thickness is 5-10 mm.
The utility model discloses a three-layer composite tube plate structure for heat exchanger, basic unit's tube sheet welding groove angle is 40-50.
The utility model discloses a three-layer composite tube plate structure for heat exchanger, stainless steel tube sheet welding groove angle is 45-60.
The utility model discloses a three-layer composite tube plate structure for heat exchanger, the welding of heat exchange tube and basic unit's tube sheet adopts argon arc welding bottoming, electric arc welding capping, and twice welding play solder joint be separated by 100 and give other care 180.
The utility model discloses a three-layer composite tube plate structure for heat exchanger, the intraformational vacuum in vacuum adopts the heating evacuation mode to form.
The utility model discloses a three-layer composite tube sheet structure for heat exchanger, the material of heat exchange tube is 20# steel aluminizing pipe, 304 or 316.
The utility model discloses a three-layer composite tube plate structure for heat exchanger, basic unit's tube sheet material is Q245R, Q345B or Q345R.
The utility model discloses a three-layer composite tube plate structure for heat exchanger, stainless steel tube sheet material is 304 or 316.
The utility model discloses the beneficial effect who produces is: the utility model discloses a three-layer composite tube plate structure for heat exchanger, its simple structure, easily manufacturing, it is pleasing to the eye to weld back tube sheet surfacing, and basic unit's tube sheet and stainless steel tube sheet all can be the pressure testing alone, not only have good leakproofness and corrosion resistance, still can be high temperature resistant simultaneously, and this three-layer composite tube sheet both can satisfy the production technology requirement of heat exchanger, reduction cost that again can be very big.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, a three-layer composite tube plate structure for a heat exchanger includes: basic unit's tube sheet 7, stainless steel tube sheet 1, a plurality of heat exchange tube 2 and sealed billet 6, it is a plurality of the heat exchange tube 2 penetrates the through-hole of opening on basic unit's tube sheet 7 and the stainless steel tube sheet 1, form vacuum layer 3 between basic unit's tube sheet 7 and the stainless steel tube sheet 1, basic unit's tube sheet 7 and the 1 marginal outsides of stainless steel tube sheet are provided with sealed billet 6, the heat exchange tube 2 all welds through seting up annular welding groove with the contact department of basic unit's tube sheet 7 and stainless steel tube sheet 1, a plurality of exhaust holes 4 have on the stainless steel tube sheet 1, 4 departments of exhaust holes cooperate and are equipped with sealed pin.
In the preferred embodiment of the present invention, the thickness of the base layer tube plate 7 is 30-50 mm.
In the preferred embodiment of the present invention, the thickness of the vacuum layer 3 is 5-10 mm.
In the preferred embodiment of the present invention, the welding groove angle of the base layer tube plate 7 is 40 to 50 °.
In the preferred embodiment of the present invention, the welding bevel angle of the stainless steel tube plate 1 is 45 to 60 °.
In the preferred embodiment of the present invention, the heat exchange tube 2 and the base tube plate 7 are welded by argon arc welding for priming, arc welding for capping, and the welding spot is 100-180 ° apart for two times of welding.
In the preferred embodiment of the present invention, the vacuum in the vacuum layer 3 is formed by heating and evacuating.
In the preferred embodiment of the present invention, the heat exchange tube 2 is made of 20# steel aluminized pipe, 304 or 316.
In the preferred embodiment of the present invention, the base tube plate 7 is made of Q245R, Q345B or Q345R.
In the preferred embodiment of the present invention, the stainless steel tube plate 1 is made of 304 or 316.
The manufacturing process comprises the following steps: welding a base tube plate 7 and a heat exchange tube 2, welding a stainless steel tube plate 1 and a sealing steel bar 6 after the pressure test is qualified, testing the pressure through an exhaust hole 4 to check the air tightness, baking the stainless steel tube plate 1 by using flame after the pressure test is qualified, heating and evacuating, and finally nailing a sealing pin 5 and sealing and welding to form a vacuum layer 3.
Due to the adoption of the technical scheme, the beneficial effects are that: the utility model discloses a three-layer composite tube plate structure for heat exchanger, its simple structure, easily manufacturing, it is pleasing to the eye to weld back tube sheet surfacing, and basic unit's tube sheet and stainless steel tube sheet all can be the pressure testing alone, not only have good leakproofness and corrosion resistance, still can be high temperature resistant simultaneously, and this three-layer composite tube sheet both can satisfy the production technology requirement of heat exchanger, reduction cost that again can be very big.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (10)
1. A three-layer composite tube plate structure for a heat exchanger is characterized by comprising: basic unit's tube sheet, stainless steel tube sheet, a plurality of heat exchange tube and sealed billet, it is a plurality of the heat exchange tube penetrates the through-hole of opening on basic unit's tube sheet and the stainless steel tube sheet, form the vacuum layer between basic unit's tube sheet and the stainless steel tube sheet, basic unit's tube sheet and stainless steel tube sheet edge outside are provided with the sealed billet, the heat exchange tube all welds through seting up annular welding groove with the contact department of basic unit's tube sheet and stainless steel tube sheet, a plurality of exhaust holes have on the stainless steel tube sheet, exhaust hole department cooperation is equipped with sealed pin.
2. The three-layer composite tube plate structure for the heat exchanger as claimed in claim 1, wherein the thickness of the base layer tube plate is 30-50 mm.
3. The three-layer composite tube plate structure for the heat exchanger as claimed in claim 1, wherein the thickness of the vacuum layer is 5-10 mm.
4. The three-layer composite tube plate structure for the heat exchanger as claimed in claim 1, wherein the welding bevel angle of the base tube plate is 40-50 °.
5. The three-layer composite tube plate structure for the heat exchanger as claimed in claim 1, wherein the welding bevel angle of the stainless steel tube plate is 45-60 °.
6. The three-layer composite tube plate structure for the heat exchanger as claimed in claim 1, wherein the heat exchange tube and the base tube plate are welded by argon arc welding for bottoming and arc welding for capping, and the welding points of the two welding are separated by 100-180 °.
7. The three-layer composite tube plate structure for the heat exchanger as claimed in claim 1, wherein the vacuum in the vacuum layer is formed by heating and evacuating.
8. The three-layer composite tube plate structure for the heat exchanger as claimed in claim 1, wherein the material of the heat exchange tube is 20# steel aluminized tube, 304 or 316.
9. The three-layer composite tube plate structure for the heat exchanger as claimed in claim 1, wherein the base tube plate is made of Q245R, Q345B or Q345R.
10. The three-layer composite tube plate structure for the heat exchanger as claimed in claim 1, wherein the stainless steel tube plate is 304 or 316.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920876873.7U CN211028494U (en) | 2019-06-12 | 2019-06-12 | Three-layer composite tube plate structure for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920876873.7U CN211028494U (en) | 2019-06-12 | 2019-06-12 | Three-layer composite tube plate structure for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211028494U true CN211028494U (en) | 2020-07-17 |
Family
ID=71563675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920876873.7U Active CN211028494U (en) | 2019-06-12 | 2019-06-12 | Three-layer composite tube plate structure for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211028494U (en) |
-
2019
- 2019-06-12 CN CN201920876873.7U patent/CN211028494U/en active Active
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