CN105889973A - Sealing fin for boiler furnace wall - Google Patents
Sealing fin for boiler furnace wall Download PDFInfo
- Publication number
- CN105889973A CN105889973A CN201610512414.1A CN201610512414A CN105889973A CN 105889973 A CN105889973 A CN 105889973A CN 201610512414 A CN201610512414 A CN 201610512414A CN 105889973 A CN105889973 A CN 105889973A
- Authority
- CN
- China
- Prior art keywords
- fin
- sealing
- sealing fin
- fin body
- opening
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a sealing fin for a boiler furnace wall. The sealing fin comprises a sealing fin body, wherein the size of the sealing fin body is matched with that of a clearance between adjacent water wall tubes on the boiler furnace wall; the sealing fin body and the water wall tubes are made of the same material; the sealing fin body is welded between the adjacent water wall tubes; the middle of the sealing fin body is provided with an opening; a heat-resistant plate material for sealing the opening is fixedly arranged on the opening. The device is capable of improving the stability of safe operation of a boiler, effectively preventing the sealing fin from leaking air, reducing deformation caused by thermal expansion and chilling shrink, and prolonging the service life of the sealing fin.
Description
Technical field
The present invention relates to a kind of boiler setting and seal fin.
Background technology
The furnace wall in existing boiler furnace region is overall a connection with water screen tube to form entirety, but due to water
The laying of cold wall pipe is the most uneven, and particularly at water screen tube bending area, the gap between water screen tube adds
Greatly so that the sealing fin that this furnace wall is formed has both sides defect: 1, owing to needs sealing area is bigger
Position, seal distance between fin middle part and water-cooling wall tube wall and can not get more greatly sufficiently cool, time long
Between in high temperature environments easily scaling loss and produce air leakage phenomena so that water screen tube external environment condition herein occurs anxious
Drastic change.2, it is global formation due to existing sealing fin, it is impossible to become along with expanding with heat and contract with cold of water-cooling wall
, easily there is crackle in shape, thus in boiler repeatedly shutdown process, along with water-cooling wall expand with heat and contract with cold crackle by
Step extends to wall section, causes water screen tube to be revealed.
Summary of the invention
The present invention is directed to the deficiencies in the prior art and provide a kind of stability improving safe operation of the boiler, have
The preventing and treating of effect seals fin and leaks out, and reduces generation deformation of expanding with heat and contract with cold, a kind of Boiler Furnace increased the service life
Wall, with sealing fin, is particularly well-suited to subcritical, super (super-) critical boiler spiral water walls and vertical water wall
Intersection furnace wall seals, effectively solve helical water-cooled wall to the pipe bent position of intermediate header sealing scaling loss,
The problem of tear.
The present invention adopts the following technical scheme that realization: a kind of boiler setting seals fin, including sealing fin
Body, the size phase in gap between the size water screen tube adjacent with on boiler setting of described sealing fin body
Coupling, the material of described sealing fin body is identical with the material of water screen tube, and described sealing fin body welds
Being connected between adjacent water screen tube, the middle part of described sealing fin body is provided with opening, fixing on described opening
There is the heat proof material plate sealing described opening.
Described heat proof material plate is fixed on the outside sealing fin body.
The size of described heat proof material plate uses monolateral point more than the size of described opening, described heat proof material plate
Weldering mode is fixed on sealing fin body.
Described heat proof material plate is heat-resisting steel sheet and plate.
Described sealing fin body is arranged on the elbow region of the helical water-cooled wall pipe of boiler.
The opening of described sealing fin body with the width sealing the edge that this outer rim of fin is formed is
4-7mm。
The preferable width at the edge of described sealing fin body is 5mm.
Owing to using said structure, present invention have the advantage that
1, fin body is sealed identical with water screen tube material, it is ensured that seal fin body and water screen tube
Welding performance, it is to avoid the situation that unlike material welding easily cracks occurs.
2, the middle part sealing fin body hollows out formation opening, and opening forms edge with sealing fin body edges,
Edge is for identical with water screen tube material with water screen tube welding and holding, and opening is close by heat-resisting steel sheet and plate
Envelope, on the one hand, heat-resisting steel sheet and plate can not be burnt, thus improve and seal fin body
Heat-resisting quantity, on the other hand heat-resisting steel sheet and plate closure seals fin body middle cavity, it is to avoid air leakage phenomena；
3, heat-resisting steel sheet and plate and sealing fin body use monolateral spot welding mode, thus remain sealing fin body
Deformation behavior, make sealing this physical ability of fin more adapt to water screen tube produce deformation.
4, heat-resisting steel sheet and plate is welded on the back side (i.e. hearth outer wall) sealing fin body, in unit operation, logical
Cross the tiny structure in burner hearth can tightly be adsorbed by heat-resisting steel sheet and plate on sealing fin body.
In sum, this device, in boiler spiral water walls elbow region, utilizes middle part perforate to adapt to
The deformation of water-cooling wall, seals fin body and uses the material identical with tubing, it is to avoid unlike material welding performance
Difference and crack.Use heat resisting steel sheet material to carry out blocking middle cavity, and only carry out with fin profile
Monolateral welding, it is thus possible to make sealing fin can more adapt to the deformation that bend pipe produces, heat-resisting steel sheet and plate is welded on close
The back side of envelope fin, the tiny structure of available burner hearth so that it is preferably fit with sealing fin, effectively solve
Determined helical water-cooled wall to the sealing scaling loss of the pipe bent position of intermediate header, the problem of tear.
Accompanying drawing explanation
Fig. 1 is one embodiment of the present invention structural representation.
Fig. 2 is the sectional view of the present invention.
Fig. 3 is the structural representation that the present invention is arranged on boiler setting.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
As shown in Figures 1 to 3, a kind of boiler setting is with sealing fin, including sealing fin body 1, described
Seal the size in gap between the size water screen tube 4 adjacent with on boiler setting of fin body 1 to match,
In this example, described sealing fin body 1 is arranged on the elbow region of the helical water-cooled wall pipe 4 of boiler, described
The material sealing fin body 1 is identical with the material of water screen tube 4, and described sealing fin body 1 is welded on
Between adjacent water screen tube 4, the middle part of described sealing fin body 1 is provided with opening, described heat-resisting steel sheet and plate 2
Size more than the size of described opening, described heat-resisting steel sheet and plate 2 uses monolateral spot welding mode to be fixed on sealing fin
On sheet body 1.Described heat-resisting steel sheet and plate 2 is fixed on the back side (i.e. hearth outer wall side) sealing fin body.Institute
The width stating the edge 3 that the opening sealing fin body is formed with sealing this outer rim of fin is 5mm.
Detailed description of the invention is, in FIG according to real space size and the position of bend pipe of on-the-spot bend pipe,
Measure size and the position of top circular arc sealing fin body 1 outline.Then fin body 1 will be sealed
Centre position hollows out, and cuts out size and the shape of heat-resisting steel sheet and plate 2 according to the size and shape hollowing out position.
In Fig. 2, by monolateral for the heat-resisting steel sheet and plate back being spot welded to seal fin, and by the laminating of other positions closely.
Claims (7)
1. boiler setting is with sealing a fin, including sealing fin body, it is characterised in that: described sealing
Between the size of fin body water screen tube adjacent with on boiler setting, the size in gap matches, described sealing
The material of fin body is identical with the material of water screen tube, and described sealing fin body is welded on adjacent water-cooling wall
Between pipe, the middle part of described sealing fin body is provided with opening, and described opening is fixed with the described opening of sealing
Heat proof material plate.
Boiler setting the most according to claim 1 seals fin, it is characterised in that: described heat-resisting material
Flitch is fixed on the outside sealing fin body.
Boiler setting the most according to claim 2 seals fin, it is characterised in that: described heat-resisting material
The size of flitch is more than the size of described opening, and described heat proof material plate uses monolateral spot welding mode to be fixed on close
On envelope fin body.
Boiler setting the most according to claim 3 seals fin, it is characterised in that: described heat-resisting material
Flitch is heat-resisting steel sheet and plate.
Boiler setting the most according to claim 4 seals fin, it is characterised in that: described sealing fin
Sheet body is arranged on the elbow region of the helical water-cooled wall pipe of boiler.
6. according to the boiler setting one of claim 1 to 5 Suo Shu with sealing fin, it is characterised in that: institute
The width stating the edge that the opening sealing fin body is formed with sealing this outer rim of fin is 4-7mm.
Boiler setting the most according to claim 6 seals fin, it is characterised in that: described sealing fin
The preferable width at the edge of sheet body is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512414.1A CN105889973A (en) | 2016-07-01 | 2016-07-01 | Sealing fin for boiler furnace wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610512414.1A CN105889973A (en) | 2016-07-01 | 2016-07-01 | Sealing fin for boiler furnace wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105889973A true CN105889973A (en) | 2016-08-24 |
Family
ID=56718586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610512414.1A Pending CN105889973A (en) | 2016-07-01 | 2016-07-01 | Sealing fin for boiler furnace wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105889973A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791759A (en) * | 2015-03-31 | 2015-07-22 | 中国神华能源股份有限公司 | Connection fins for being connected among water-cooled tubes on water-cooled boiler wall, method and boiler |
-
2016
- 2016-07-01 CN CN201610512414.1A patent/CN105889973A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791759A (en) * | 2015-03-31 | 2015-07-22 | 中国神华能源股份有限公司 | Connection fins for being connected among water-cooled tubes on water-cooled boiler wall, method and boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |