CN208983314U - Water screen tube fin with buffering thermal stress and raising heat exchange efficiency - Google Patents
Water screen tube fin with buffering thermal stress and raising heat exchange efficiency Download PDFInfo
- Publication number
- CN208983314U CN208983314U CN201821332152.1U CN201821332152U CN208983314U CN 208983314 U CN208983314 U CN 208983314U CN 201821332152 U CN201821332152 U CN 201821332152U CN 208983314 U CN208983314 U CN 208983314U
- Authority
- CN
- China
- Prior art keywords
- fin
- circular arc
- water screen
- screen tube
- heat exchange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 230000008646 thermal stress Effects 0.000 title claims abstract description 25
- 230000003139 buffering effect Effects 0.000 title claims abstract description 18
- 238000001816 cooling Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 235000019628 coolness Nutrition 0.000 claims 1
- 238000003466 welding Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 241001503991 Consolida Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a kind of with buffering thermal stress and improve the water screen tube fin of heat exchange efficiency.Currently, fin is parallel between being mostly two water screen tubes with the form that water screen tube connects to be welded with fin, fin is in line-styled.This arrangement easily forms booster, and influences heat exchange efficiency.The utility model includes No.1 water screen tube, No. two water screen tubes, No.1 circular arc fin and No. two circular arc fins, the side of No.1 circular arc fin is connect with the side of No. two circular arc fins, the other side of No.1 circular arc fin is connect with No.1 water screen tube, and the other side of No. two circular arc fins is connect with No. two water screen tubes；No.1 circular arc fin and No. two circular arc fins are arcuate structure, No.1 circular arc fin and No. two circular arc fin Opposite direction connections, and No.1 circular arc fin and No. two circular arc fins are connected to form the S type fin of " S " type structure.The utility model increases scope of thermal expansion and heat exchange area, reduces thermal stress, improves heat exchange efficiency.
Description
Technical field
The utility model relates to a kind of with buffering thermal stress and improve the water screen tube fin of heat exchange efficiency, be widely applied
In station boiler field.
Background technique
In order to improve coal-fired power station boiler heat exchange efficiency, saving fuel is used, and improves power generation field economic benefit,
In the manufacture of large medium-size boiler furnace wall cooling, the form for mostly using fin to connect with water screen tube greatly is arranged.This arrangement is most
For H-type structure, i.e. it is welded with fin in parallel between two water screen tubes, fin is in line-styled, such as application number in terms of axial end face
For 201721833814.9 Chinese patent.In actual operation, when Combustion Operation of Boilers changes greatly, temperature deviation with it is swollen
The swollen unsmooth larger thermal stress of generation at fin and water screen tube solder design, easily causes water screen tube and fin weld seam to draw
It splits, forms booster.In addition, during water screen tube and fin actual welding, since welding personnel weld horizontal is not high, weld seam matter
Measure it is low reduce weld strength, undoubtedly encouraged Waterwall tube failure leakage generation.Meanwhile adjacent two water screen tubes spacing is small,
Above-mentioned arrangement heat exchange area is smaller, influences heat exchange efficiency.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and it is reasonable to provide a kind of design
Water screen tube fin with buffering thermal stress and raising heat exchange efficiency, increases scope of thermal expansion and heat exchange area, reduces
Thermal stress improves heat exchange efficiency.
The technical scheme in the invention for solving the above technical problem is: one kind, which having buffering thermal stress and improves, to exchange heat
The water screen tube fin of efficiency, including No.1 water screen tube and No. two water screen tubes；It is characterized in that, further including No.1 circular arc fin
Piece and No. two circular arc fins, the side of the No.1 circular arc fin are connect with the side of No. two circular arc fins, the No.1 circular arc
The other side of fin is connect with No.1 water screen tube, and the other side of No. two circular arc fins is connect with No. two water screen tubes；Institute
Stating No.1 circular arc fin and No. two circular arc fins is arcuate structure, and the No.1 circular arc fin and No. two circular arc fins reversely connect
It connects, the No.1 circular arc fin and No. two circular arc fins are connected to form the S type fin of " S " type structure.
Furthermore, the No.1 circular arc fin and No. two circular arc fins are fixed on No.1 water screen tube respectively in axial direction
On the outer wall of No. two water screen tubes, the No.1 circular arc fin, No. two circular arc fins, No.1 water screen tube and No. two water-cooling walls
The length of pipe is identical.
Furthermore, the No.1 water screen tube, S type fin and No. two water screen tubes are alternately arranged；Multiple No.1 water
In cold wall pipe and No. two water screen tubes, a S type fin is arranged between each No.1 water screen tube and No. two water screen tubes.
Furthermore, the material of the No.1 water screen tube and No. two water screen tubes be SA-210C, specification be Φ 70 ×
8.1mm。
Furthermore, the material of the No.1 circular arc fin and No. two circular arc fins is 12Cr1MoV.
Furthermore, the No.1 circular arc fin and No. two circular arc fin structures are identical, the No.1 circular arc fin and
The inside radius of No. two circular arc fins is 65mm, and outer radius is 71 mm, with a thickness of 6mm.
A kind of processing method of the water screen tube fin as described above that there is buffering thermal stress and improve heat exchange efficiency,
It is characterized in that, the processing method is as follows: respectively radially by the side of No.1 circular arc fin and the side of No. two circular arc fins
45 ° of grooves are made a call in the two sides of end face, later adopt the side of the side of No.1 circular arc fin and No. two circular arc fins at groove
Welded with the mode of two-sided docking, obtain S type fin, by S type fin respectively with No.1 water screen tube and No. two water screen tubes
Outer wall welding, so that the symmetrical centre point of the intersection point and S type fin of S type fin and No.1 water screen tube and No. two water screen tubes
On same straight line, distance is 200mm between S type fin and No.1 water screen tube and the intersection point of No. two water screen tubes.
Furthermore, the intersection point and No.1 circular arc fin of S type fin and No.1 water screen tube and No. two water screen tubes or
The tangent line of No. two circular arc fins is in 45° angle, is formed using the type fin end face two sides S and No.1 water screen tube or No. two water screen tubes
Angle carry out two-sided welding.
Furthermore, two radial end face of S type fin is vertical with the tangent line at the top of end arc.
A kind of working method of the water screen tube fin as described above that there is buffering thermal stress and improve heat exchange efficiency,
Be characterized in that, the working method is as follows: when the variation of boiler furnace thermic load, S type fin passes through perpendicular to wall-cooling surface side
To expansion discharge thermal stress, prevent weld seam from cracking because pulling force is excessive, cause water screen tube explosion leakage；Meanwhile S type fin
Piece increases heat exchange area, improves heat exchange compared to line-styled fin in the case where adjacent water screen tube spacing is certain
Efficiency.
The utility model compared with prior art, has the following advantages that and effect: the fin between adjacent water screen tube is in S
Type, curved structure are conducive to absorbing thermal expansion amount compared to original linear structure, reduce fin and water screen tube weld seam pulling force；Together
When, increase heat exchange area, improves heat exchange efficiency.Furthermore the advantages of it is simple to have both structure, is conducive to processing, can be improved station boiler
Safety and economy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
In figure: 1, No. two circular arc fin 2 of No.1 circular arc fin, No.1 water screen tube 3, No. two water screen tubes 4, No.1 fillet welding
Stitch 5, two bugle weld seams 6, butt weld 7.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1, a kind of water screen tube fin with buffering thermal stress and raising heat exchange efficiency, including No.1 water-cooling wall
Pipe 3 and No. two water screen tubes 4；It further include No.1 circular arc fin 1 and No. two circular arc fins 2, the side of the No.1 circular arc fin 1
It being connect with the side of No. two circular arc fins 2, the other side of the No.1 circular arc fin 1 is connect with No.1 water screen tube 3, and described two
The other side of number circular arc fin 2 is connect with No. two water screen tubes 4；The No.1 circular arc fin 1 and No. two circular arc fins 2 are arc
Shape structure, the No.1 circular arc fin 1 and No. two 2 Opposite direction connections of circular arc fin, the No.1 circular arc fin 1 and No. two circular arc fins
Piece 2 is connected to form the S type fin of " S " type structure.
In the present embodiment, the No.1 circular arc fin 1 and No. two circular arc fins 2 are fixed on No.1 water-cooling wall respectively in axial direction
On the outer wall of pipe 3 and No. two water screen tubes 4, the No.1 circular arc fin 1, No. two circular arc fin 2, No.1 water screen tube 3 and two
The length of number water screen tube 4 is identical.
In the present embodiment, the No.1 water screen tube 3, S type fin and No. two water screen tubes 4 are alternately arranged；Multiple No.1s
In water screen tube 3 and No. two water screen tubes 4, a S is arranged between each No.1 water screen tube 3 and No. two water screen tubes 4
Type fin.
In the present embodiment, the material of the No.1 water screen tube 3 and No. two water screen tubes 4 is SA-210C, and specification is Φ 70
×8.1mm。
In the present embodiment, the material of the No.1 circular arc fin 1 and No. two circular arc fins 2 is 12Cr1MoV.
In the present embodiment, the No.1 circular arc fin 1 is identical with No. two 2 structures of circular arc fin, the No.1 circular arc fin 1
Inside radius with No. two circular arc fins 2 is 65mm, and outer radius is 71 mm, with a thickness of 6mm.
Above-mentioned has buffering thermal stress and the processing method for the water screen tube fin for improving heat exchange efficiency as follows:
Water screen tube fin with buffering thermal stress and raising heat exchange efficiency, including size and thickness No.1 all the same
Circular arc fin 1 and No. two circular arc fins 2, fin material are 12Cr1MoV, and length 800mm, fin chord length is 96mm, with a thickness of
6mm.By No.1 circular arc fin 1 and No. two circular arc fins 2, reversely docking carries out two-sided welding, and weld seam is butt weld 7, before welding
45 ° of grooves are made a call to docking site is two-sided, and postwelding No.1 circular arc fin 1 and No. two circular arc fins 2 are centrosymmetric structure, from axial direction
End face sees that S type fin two-end-point and symmetrical centre point are in straight line, and distance is 190mm between endpoint in " S " type.Choose material
For the No.1 water screen tube 3 of SA-201C and No. two water screen tubes 4, specification is 70 × 8.1mm of Φ, length 800mm, is fixed
No.1 water screen tube 3 and No. two water screen tubes 4, so that the plane of its composition is rectangle, No.1 water screen tube 3 and No. two water-cooling walls
The distance of center circle of pipe 4 is 270mm.S type fin molding after butt welding is placed on No.1 water screen tube 3 and No. two water screen tubes 4
Between, S type fin radial direction both ends of the surface are completely coincident with two water screen tubes, outer arc end face line and No.1 water screen tube 3 and No. two
The outer wall of water screen tube 4 contacts, and when welding forms nature groove, is handled using two-sided welding mode, the type fin both ends S point
No.1 fillet weld 5 and two bugle weld seams 6 are formed not between No.1 water screen tube 3 and No. two water screen tubes 4.In large medium-size boiler water
When cold wall manufactures, alternately welding is carried out to water screen tube and S type fin by the requirement.
In the present embodiment, the intersection point and No.1 circular arc fin 1 of S type fin and No.1 water screen tube 3 and No. two water screen tubes 4
Or the tangent line of No. two circular arc fins 2 is in 45° angle, utilizes the type fin end face two sides S and No.1 water screen tube 3 or No. two water screen tubes
4 angles formed carry out two-sided welding.
Above-mentioned has buffering thermal stress and the working method for the water screen tube fin for improving heat exchange efficiency as follows: working as boiler
When furnace load changes, S type fin discharges thermal stress by the expansion perpendicular to wall-cooling surface direction, prevents weld seam because of pulling force
It is excessive to crack, cause water screen tube explosion leakage；Meanwhile in the case where adjacent water screen tube spacing is certain, there is arc
The S type fin of degree increases heat exchange area, improves heat exchange efficiency.
In boiler actual motion, S type fin side affected by hot loading influences, No.1 circular arc fin 1 and No. two circular arc fins 2
Arc radius will increase, and arc top extends to 3, No. two water screen tubes 4 of No.1 water screen tube of two sides, passes through to contract, chord length
Good expansion reduces root run thermal stress caused by temperature change, and playing prevents water screen tube root run because of thermal stress mistake
The accident of drawing crack booster is caused greatly.Meanwhile the arcuate structure of 1, No. two circular arc fin 2 of No.1 circular arc fin, increase heat-transfer surface
Product, improves the thermal efficiency, can play energy-saving effect.
Although the utility model is disclosed as above with embodiment, its protection scope being not intended to limit the utility model,
Any technical staff for being familiar with this technology, it is made in the conception and scope for not departing from the utility model to change and retouch,
It all should belong to the protection range of the utility model.
Claims (6)
1. a kind of water screen tube fin with buffering thermal stress and raising heat exchange efficiency, including No.1 water screen tube and No. two water
Cold wall pipe；It is characterized in that, further including No.1 circular arc fin and No. two circular arc fins, the side and two of the No.1 circular arc fin
The side connection of number circular arc fin, the other side of the No.1 circular arc fin are connect with No.1 water screen tube, No. two circular arcs
The other side of fin is connect with No. two water screen tubes；The No.1 circular arc fin and No. two circular arc fins are arcuate structure, institute
No.1 circular arc fin and No. two circular arc fin Opposite direction connections are stated, the No.1 circular arc fin and No. two circular arc fins are connected to be formed
The S type fin of " S " type structure.
2. the water screen tube fin according to claim 1 for having buffering thermal stress and improving heat exchange efficiency, feature exist
It is fixed on No.1 water screen tube and No. two water screen tubes respectively in axial direction in, the No.1 circular arc fin and No. two circular arc fins
On outer wall, the No.1 circular arc fin, No. two circular arc fins, the length of No.1 water screen tube and No. two water screen tubes are identical.
3. the water screen tube fin according to claim 1 for having buffering thermal stress and improving heat exchange efficiency, feature exist
In the No.1 water screen tube, S type fin and No. two water screen tubes are alternately arranged；Multiple No.1 water screen tubes and No. two water coolings
In wall pipe, a S type fin is arranged between each No.1 water screen tube and No. two water screen tubes.
4. the water screen tube fin according to claim 1 for having buffering thermal stress and improving heat exchange efficiency, feature exist
In the material of the No.1 water screen tube and No. two water screen tubes is SA-210C, and specification is 70 × 8.1mm of Φ.
5. the water screen tube fin according to claim 1 for having buffering thermal stress and improving heat exchange efficiency, feature exist
In the material of the No.1 circular arc fin and No. two circular arc fins is 12Cr1MoV.
6. the water screen tube fin according to claim 1 for having buffering thermal stress and improving heat exchange efficiency, feature exist
In, the No.1 circular arc fin and No. two circular arc fin structures are identical, the No.1 circular arc fin and No. two circular arc fins it is interior
Radius is 65mm, and outer radius is 71 mm, with a thickness of 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821332152.1U CN208983314U (en) | 2018-08-17 | 2018-08-17 | Water screen tube fin with buffering thermal stress and raising heat exchange efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821332152.1U CN208983314U (en) | 2018-08-17 | 2018-08-17 | Water screen tube fin with buffering thermal stress and raising heat exchange efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208983314U true CN208983314U (en) | 2019-06-14 |
Family
ID=66781712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821332152.1U Active CN208983314U (en) | 2018-08-17 | 2018-08-17 | Water screen tube fin with buffering thermal stress and raising heat exchange efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208983314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185857A (en) * | 2018-08-17 | 2019-01-11 | 华电电力科学研究院有限公司 | Water screen tube fin and its processing and working method with buffering thermal stress and raising heat exchange efficiency |
-
2018
- 2018-08-17 CN CN201821332152.1U patent/CN208983314U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185857A (en) * | 2018-08-17 | 2019-01-11 | 华电电力科学研究院有限公司 | Water screen tube fin and its processing and working method with buffering thermal stress and raising heat exchange efficiency |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201900403U (en) | Boiler membrane type wall edge flat steel welding tooling | |
| CN202485527U (en) | H-shaped finned tube | |
| CN103791479B (en) | A kind of novel full tube panel formula high efficiency fuel gas fired-boiler | |
| CN106090865B (en) | Supercritical carbon dioxide boiler radiation heating surface arrangement method | |
| CN208983314U (en) | Water screen tube fin with buffering thermal stress and raising heat exchange efficiency | |
| CN109029015A (en) | A kind of derotation is to formula Laser Welding finned tube | |
| CN105737132B (en) | A kind of device for reducing the deformation of supercritical circulating fluidized bed boiler monowall tube | |
| CN102958214A (en) | Protection screen of submerged arc furnace | |
| CN205228244U (en) | Reinforce heat transfer arc extended surface tube | |
| CN209013816U (en) | High heat-exchange performance serpentine fin heat exchange pipe | |
| CN109185857A (en) | Water screen tube fin and its processing and working method with buffering thermal stress and raising heat exchange efficiency | |
| CN202907250U (en) | Protection screen of submerged arc furnace | |
| CN108871017B (en) | An absorption type fully welded plate and shell heat exchanger | |
| CN207991351U (en) | Spiral fin coil and heat exchanger | |
| CN203550637U (en) | Plate-type preheating device for aluminum-fusing shaft furnace | |
| CN104654588B (en) | The stainless heat exchanger of gas water heater or wall-hung boiler | |
| CN204176675U (en) | A kind of New-type boiler water-cooling wall | |
| CN105066437B (en) | The complete wet back of the body central flame flame boiler of integral type | |
| CN202648477U (en) | Radiation type high temperature heat-exchanger | |
| CN202582290U (en) | Detachable all-welded plate-shell heat exchanger | |
| CN205678650U (en) | A kind of boiler water wall | |
| CN107356149B (en) | Inner finned tube heat exchanger with micro-wedge structure | |
| CN207123209U (en) | Fixed tube-sheet exchanger | |
| CN202422771U (en) | Membrane wall structure for passive heat dissipation system heat exchanger of containment vessel | |
| CN110566995A (en) | Sealing structure for nozzle tube panel of vertical water wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |