CN205447733U - Water cold wall pipe's protection architecture and circulating fluidized bed boiler - Google Patents
Water cold wall pipe's protection architecture and circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN205447733U CN205447733U CN201620313627.7U CN201620313627U CN205447733U CN 205447733 U CN205447733 U CN 205447733U CN 201620313627 U CN201620313627 U CN 201620313627U CN 205447733 U CN205447733 U CN 205447733U
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- Prior art keywords
- screen tube
- water screen
- water
- counter
- cooling wall
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 238000001816 cooling Methods 0.000 claims abstract description 49
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 16
- 239000007787 solid Substances 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
The utility model discloses a water cold wall pipe's protection architecture and circulating fluidized bed boiler, the radial both sides of water cold wall pipe (3) are equipped with water -cooling wall fin (4) respectively, water cold wall pipe's protection architecture includes protection shield (1) and support piece (2), the one end of protection shield (1) is connected the counter -fire face one side of water cold wall pipe (3) on water -cooling wall fin (4), extend with the shroud in the other end slant of protection shield (1) the counter -fire face, and protection shield (1) is passed through support piece (2) support in water cold wall pipe (3) for the opposite side of counter -fire face on water -cooling wall fin (4). This water cold wall pipe's protection architecture can reduce and flows granule and solid particle among the furnace to the impact abrasion and the impact damage of the outer pipe wall of the water -cooling wall of counter -fire face, has lengthened the life and the cycle of operation of water -cooling wall.
Description
Technical field
This utility model relates to boiler, in particular it relates to the protection structure of a kind of water screen tube and there is the CFBB of protection structure of this water screen tube.
Background technology
Water-cooling wall is arranged on being mainly used on boiler furnace internal face the heating surface of water cooling.Water-cooling wall is the main heated portion of boiler, and it is made up of the row's of number steel pipe, is distributed in the surrounding of boiler furnace.Its inside is water or the steam of flowing, and the external world accepts the flame heat regulating of boiler furnace.
In CFBB, use the mode of CFBC so that coal grain carries out burning and discharging heat under fluidized state.High-temperature material in burner hearth and flue gas all heating surfaces with water-cooling wall carry out heat exchange.Flue gas carries substantial amounts of material from bottom to top from upper furnace outlet two cyclone separator of tangential entrance, and carries out the separation of flue gas and solid particle in cyclone separator.
Flue gas carries substantial amounts of material from bottom to top during upper furnace outlet two cyclone separator of tangential entrance, the material work surface to the left and right wall of combustor water-cooling wall and the water-cooling wall work surface near separator inlet under the drive of air-flow carry out erosive wear and impact damage, easily cause this position heating surface tube wall the most thinning, even there is booster blowing out accident, this problem hidden danger has had a strong impact on normal production, constrain the performance of CFBB superiority, consuming the CFBB start and stop energy, the cost of overhaul adding equipment is used.
Utility model content
The purpose of this utility model is to provide protection structure and the CFBB of a kind of water screen tube; the protection structure of this water screen tube can reduce flow particles and solid particle in burner hearth to the impact wear of the outer tube wall of the water-cooling wall in counter-fire face and impact injury, extends service life and the cycle of operation of water-cooling wall.
To achieve these goals, according to one side of the present utility model, provide the protection structure of a kind of water screen tube, the radially opposite sides of water screen tube are respectively equipped with water-cooling wall fin, the protection structure of described water screen tube includes protection board and support member, on the described water-cooling wall fin of the side, counter-fire face that one end of described protection board is connected to described water screen tube, the other end of described protection board extends with counter-fire face described in cover cap obliquely, and described protection board by described supports support on the described water-cooling wall fin relative to the opposite side in described counter-fire face of described water screen tube.
Preferably, described protection board includes that arc section, the bottom of described arc section are connected on the described water-cooling wall fin that the counter-fire face with described water screen tube connects, and the top of described arc section upwardly extends around described counter-fire face.
Preferably, the vertically height of described arc section is not less than the pipe radius of described water screen tube.
Preferably, described protection board also includes the straight plate section extended obliquely from the top of described arc section, with the counter-fire face of the described water screen tube of the adjacent side of cover cap.
Preferably, the bending member that described protection board is formed in one.
Preferably, described support member is the spaced apart many support bars of axial direction along described water screen tube.
Preferably, described protection board and described support member are made by chromium nickel heat-resistance stainless steel.
Preferably, the lateral wall of described protection board is provided with wearing layer.
In addition; according to another aspect of the present utility model; provide a kind of CFBB; this CFBB includes the water-cooling wall that burner hearth and the internal face along described burner hearth are arranged; described water-cooling wall includes the many water screen tubes that spacing side by side is arranged; all it is connected by water-cooling wall fin between two described water screen tubes of arbitrary neighborhood, at least part of described water screen tube is provided with the protection structure of described water screen tube.
Preferably, it is connected by spot welding between the protection structure of described water screen tube with described water-cooling wall fin.
By technique scheme, the protection structure design of water screen tube of the present utility model includes protection board and support member, and one end of protection board is connected on the water-cooling wall fin of side, counter-fire face of water screen tube, to be fixed on water-cooling wall fin by protection board；The other end of protection board extends obliquely, on the one hand for the counter-fire face of cover cap water screen tube, on the other hand for changing the direction of fluidized wind flowing, thus reduces the abrasion to the counter-fire face of water screen tube of the flow particles in fluidized wind and solid particle.Support member is used for supporting protection board so that protection board can keep the angle extended obliquely, prevents protection board from deforming upon.So that the protection structure of water screen tube of the present utility model can effectively extend service life and the cycle of operation of water-cooling wall.
Other features and advantages of the utility model will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, but is not intended that restriction of the present utility model together with detailed description below.In the accompanying drawings:
Fig. 1 is the structural representation of the protection structure of the water screen tube according to preferred implementation of the present utility model.
Description of reference numerals
1 protection board 2 support member
3 water screen tube 4 water-cooling wall fins
The 11 straight plate sections of arc section 12
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains this utility model, it is not limited to this utility model.
In this utility model, in the case of illustrating on the contrary, the noun of locality of use such as " upper and lower " is typically for for direction shown in the drawings or for each parts mutual alignment relationship description word on vertical, vertical or gravity direction.
See Fig. 1; Fig. 1 shows the protection structure according to a kind of water screen tube in preferred implementation of the present utility model; the radially opposite sides of water screen tube 3 are respectively equipped with water-cooling wall fin 4; the protection structure of water screen tube includes protection board 1 and support member 2; one end of protection board 1 is connected on the water-cooling wall fin 4 of side, counter-fire face of water screen tube 3; the other end of protection board 1 extends obliquely with cover cap counter-fire face, and protection board 1 passes through on the water-cooling wall fin 4 of the opposite side relative to counter-fire face that support member 2 is supported in water screen tube 3.
It should be noted that in CFBB, the counter-fire face of water screen tube 3 is the wall of the directly outer tube wall of the water screen tube 3 of impact being positioned at burner hearth inside and fluidized wind.
The protection structure design of water screen tube of the present utility model includes protection board 1 and support member 2, and one end of protection board 1 is connected on the water-cooling wall fin 4 of side, counter-fire face of water screen tube 3, to be fixed on water-cooling wall fin 4 by protection board 1；The other end of protection board 1 extends obliquely, on the one hand for the counter-fire face of cover cap water screen tube 3, on the other hand for changing the direction of fluidized wind flowing, thus reduces the abrasion to the counter-fire face of water screen tube 3 of the flow particles in fluidized wind and solid particle.Support member 2 is used for supporting protection board 1 so that protection board 1 can keep the angle extended obliquely, prevents protection board 1 from deforming upon, so that the protection structure of water screen tube of the present utility model can effectively extend service life and the cycle of operation of water-cooling wall.
The structure of protection board 1 is specifically described below in conjunction with Fig. 1.In FIG, protection board 1 includes that arc section 11, the bottom of arc section 11 are connected on the water-cooling wall fin 4 that the counter-fire face with water screen tube 3 connects, and the top of arc section 11 upwardly extends around counter-fire face.Arc section 11 can be effectively protected the counter-fire face of water screen tube 3, prevents the abrasion to the counter-fire face of water screen tube of the flow particles in fluidized wind and solid particle.This arc section 11 is one end of protection board 1, and it is mainly used in flow particles and the impact wear of solid particle replacing the counter-fire face of water screen tube to accept in fluidized wind.
In preferred implementation of the present utility model, especially, the vertically height of arc section 11 is not less than the pipe radius of water screen tube 3.Make arc section 11 can live the counter-fire face of water screen tube 3 by cover cap.It should be noted that see Fig. 1, the vertical height of arc section 11 is the height of the length direction along paper.
In order to the counter-fire face of the water screen tube 3 of the adjacent side of cover cap, especially, protection board 1 also includes the straight plate section 12 extended obliquely from the top of arc section 11.Acting as of straight plate section 12: the on the one hand counter-fire face of the water screen tube 3 for the adjacent side of cover cap; on the other hand for changing the direction of fluidized wind flowing; the direction that fluidized wind is extended with straight plate section 12 is blown; even if the flow particles in fluidized wind and solid particle fall downwards due to action of gravity; also only can fall on the protection board 1 of protection structure of next adjacent water screen tube, thus integrally reduce the flow particles in fluidized wind and the solid particle abrasion to the counter-fire face of water screen tube 3.
In this utility model, protection board 1 can be that splice, i.e. protection board 1 are spliced by the one end on the top of arc section 11 with straight plate section 12.But the protection board 1 of splicing easily produces stress and concentrates so that protection board 1 is easily broken off or deforms upon.It is therefore especially preferred that ground, the bending member that protection board 1 is formed in one.Integrated protection board 1 further ensures the intensity of himself so that extend the service life of protection board 1.
So that water screen tube 3 does not the most affect the endothermic effect of device self after the protection structure being mounted with water screen tube.Especially, in preferred implementation of the present utility model, support member 2 is the spaced apart many support bars of axial direction along water screen tube 3.A heat part in burner hearth can pass to water screen tube 3 by protection board 1, and a part can enter between the gap between many support bars in the protection structure of water screen tube so that heat is directly and water screen tube 3 carries out heat exchange.
Owing to the fusing point of chromium nickel heat-resistance stainless steel is high, high temperature resistant, its ductility and conductivity of heat are all good, and easily process, and therefore in preferred implementation of the present utility model, especially, protection board 1 and support member 2 are made by chromium nickel heat-resistance stainless steel.
Especially, in order to extend the cycle changing protection board 1 further, it is also possible to be provided with wearing layer on the lateral wall of protection board 1.For example, it is possible at the lateral wall upper of protection board 1 or spraying wear-resistant materials.
This utility model additionally provides a kind of CFBB; this CFBB includes the water-cooling wall that burner hearth and the internal face along burner hearth are arranged; water-cooling wall includes the many water screen tubes 3 that spacing side by side is arranged; all it is connected by water-cooling wall fin 4 between two water screen tubes 3 of arbitrary neighborhood, at least part of water screen tube 3 is provided with the protection structure of water screen tube.
In CFBB, flue gas carries a large amount of material from bottom to top during the rear wall of upper furnace exports tangential entrance cyclone separator, material is bigger to the impact wear of the water-cooling wall in burner hearth under the drive of air-flow, the especially burner hearth of boiler and the junction of cyclone separator, the counter-fire surface wear of the entrance of i.e. close cyclone separator and the water screen tube 3 of both sides thereof is serious, therefore, the protection structure of water screen tube of the present utility model is especially placed on the water screen tube 3 of above-mentioned easy impact wear, to extend service life and the cycle of operation of water screen tube 3, thus also ensure that the properly functioning of CFBB, reduce the maintenance number of times of CFBB.But this utility model is not limited to be provided only on the place of above-mentioned easily abrasion, it is also possible to according to the concrete abrasion condition of CFBB, select the position of the protection structure of water screen tube.
It is particularly preferred that in preferred implementation of the present utility model, the protection structure of water screen tube is connected by spot welding between water-cooling wall fin 4.I.e. protection board 1 and support member 2 be all connected to by spot welding institute's cover cap water screen tube 3 both sides water-cooling wall fin 4 on.
In sum, this utility model is by arranging the protection structure of water screen tube on the counter-fire face of water screen tube 3, to eliminate the impact wear in the counter-fire face of water screen tube 3.Specifically; one end of the protection board 1 of the protection structure of water screen tube is connected on the water-cooling wall fin 4 of side, counter-fire face of water screen tube 3; the other end of protection board 1 extends obliquely; with the counter-fire face of cover cap water screen tube 3, and the other end of protection board 1 is supported by the support member 2 of the protection structure of water screen tube and on the water-cooling wall fin 4 of the opposite side relative to counter-fire face that is connected to water screen tube 3.Thus reach the counter-fire face of cover cap water screen tube 3, prevent the counter-fire face of water screen tube 3 by the purpose of impact wear, to extend service life and the cycle of operation of water-cooling wall.
Preferred implementation of the present utility model is described in detail above in association with accompanying drawing; but; this utility model is not limited to the detail in above-mentioned embodiment; in technology concept of the present utility model; the technical solution of the utility model can be carried out multiple simple variant, these simple variant belong to protection domain of the present utility model.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in the case of reconcilable, can be combined by any suitable means, in order to avoid unnecessary repetition, various possible compound modes are illustrated by this utility model the most separately.
Additionally, can also carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. the protection structure of a water screen tube, the radially opposite sides of water screen tube (3) are respectively equipped with water-cooling wall fin (4), it is characterized in that, the protection structure of described water screen tube includes protection board (1) and support member (2), one end of described protection board (1) is connected on the described water-cooling wall fin (4) of the side, counter-fire face of described water screen tube (3), the other end of described protection board (1) extends with counter-fire face described in cover cap obliquely, and described protection board (1) is supported on the described water-cooling wall fin (4) relative to the opposite side in described counter-fire face of described water screen tube (3) by described support member (2).
The protection structure of water screen tube the most according to claim 1; it is characterized in that; described protection board (1) includes arc section (11); the bottom of described arc section (11) is connected on the described water-cooling wall fin (4) that connects with the counter-fire face of described water screen tube (3), and the top of described arc section (11) upwardly extends around described counter-fire face.
The protection structure of water screen tube the most according to claim 2, it is characterised in that the vertically height of described arc section (11) is not less than the pipe radius of described water screen tube (3).
The protection structure of water screen tube the most according to claim 2; it is characterized in that; described protection board (1) also includes the straight plate section (12) extended obliquely from the top of described arc section (11), with the counter-fire face of the described water screen tube (3) of the adjacent side of cover cap.
The protection structure of water screen tube the most according to claim 2, it is characterised in that the bending member that described protection board (1) is formed in one.
The protection structure of water screen tube the most according to claim 1, it is characterised in that described support member (2) is the spaced apart many support bars of axial direction along described water screen tube (3).
The protection structure of water screen tube the most according to claim 1, it is characterised in that described protection board (1) and described support member (2) are made by chromium nickel heat-resistance stainless steel.
The protection structure of water screen tube the most according to claim 1, it is characterised in that the lateral wall of described protection board (1) is provided with wearing layer.
9. a CFBB; this CFBB includes the water-cooling wall that burner hearth and the internal face along described burner hearth are arranged; described water-cooling wall includes the many water screen tubes (3) that spacing side by side is arranged; all it is connected by water-cooling wall fin (4) between two described water screen tubes (3) of arbitrary neighborhood; it is characterized in that, at least part of described water screen tube (3) is provided with the protection structure of water screen tube as claimed in any of claims 1 to 8.
CFBB the most according to claim 9, it is characterised in that be connected by spot welding between the protection structure of described water screen tube with described water-cooling wall fin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620313627.7U CN205447733U (en) | 2016-04-14 | 2016-04-14 | Water cold wall pipe's protection architecture and circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620313627.7U CN205447733U (en) | 2016-04-14 | 2016-04-14 | Water cold wall pipe's protection architecture and circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205447733U true CN205447733U (en) | 2016-08-10 |
Family
ID=56607117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620313627.7U Active CN205447733U (en) | 2016-04-14 | 2016-04-14 | Water cold wall pipe's protection architecture and circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205447733U (en) |
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2016
- 2016-04-14 CN CN201620313627.7U patent/CN205447733U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |