CN207622000U - Supercritical CFB Boiler water-cooling wall shoe - Google Patents
Supercritical CFB Boiler water-cooling wall shoe Download PDFInfo
- Publication number
- CN207622000U CN207622000U CN201721561338.XU CN201721561338U CN207622000U CN 207622000 U CN207622000 U CN 207622000U CN 201721561338 U CN201721561338 U CN 201721561338U CN 207622000 U CN207622000 U CN 207622000U
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- water
- cooling wall
- homogenizing plate
- vertical deflector
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Abstract
The utility model provides a kind of Supercritical CFB Boiler water-cooling wall shoe, the device is made of water-cooling wall, lateral homogenizing plate, vertical deflector, anti-friction protecting watt, water-cooling wall fin, along the multiple tracks of water-cooling wall circumferentially lateral homogenizing plate annular in shape, grid is reticulated with vertical deflector group, layering is mounted on four wall of burner hearth.It is characterized in that；The transverse direction homogenizing plate notch is corresponding with anti-friction protecting watt circular arc outer diameter, wherein anti-friction protecting watt is welded on the fin of water screen tube both sides, lateral homogenizing plate level is welded in the middle part of anti-friction protecting watt, the vertical deflector is vertically welded on water-cooling wall fin, the transverse direction homogenizing plate and vertical deflector design multiple air holes, and the lateral homogenizing plate being mounted on water-cooling wall must well-balanced distribution with vertical deflector.The utility model can reduce adherent reflux flow velocity and concentration, and eddy flow particle is prevented to be vortexed the concentrated wear to water-cooling wall, and can improve boiler bed temperature, reduce exhaust gas temperature, reduce attemperation water flow raising boiler efficiency, play the effect of energy-saving and emission-reduction.
Description
Technical field
The utility model is related to boiler water wall Anti-wear Technology fields, and in particular to a kind of Supercritical CFB Boiler water-cooling wall
Shoe
Background technology
Technology of Circulating Fluidized Bed Boiler is the new technology to grow up the 1970s, and the type boiler is with its unique combustion
The features such as burning mode has fuel tolerance wide, and Load Regulation is good, and burning, desulfurization are completed at the same time in stove, currently, China is most
Large capacity class 6 00MW Supercritical CFB Boilers have more power plant and go into operation operation, circulating fluidized bed boiler whether technology water
Flat or installed capacity, China are walked in the most forefront in the world, and development speed attracts people's attention.But recirculating fluidized bed
The wear rate of boiler is big compared with coal-powder boiler, and many boiler operation times are not long pipe abrasion leakage occurs, up to the present, not yet
Obtain effective, thorough solution.The existing Anti-wear Technology for circulating fluidized bed boiler abrading section has：1. being sprayed on pipe
Apply wear-resistant material；2. deposition；3. laying castable.4. installing abrasionproof beam additional.These above-mentioned methods are due to costly, structure design
It is unreasonable, so that heat transfer coefficient reduces after adherent ash flow velocity and the unreasonable decline of concentration, finally affect the on-load energy of boiler
Power.For current shoe because the bed material and flying dust of flowing are guided among burner hearth, fluid field in furnace changes the material for making reflux
Burning is quickly participated in again, boiler bed temperature is caused to increase, and exhaust gas temperature rises attemperation water flow and increases, and local waterwall tube cracking adds
Play, existing abrasionproof mode are all difficult to meet boiler long-term operation, cause CFB boiler problem for many years always cannot be fine
Solution.
Utility model content
For above-mentioned existing technological deficiency, the utility model provides a kind of Supercritical CFB Boiler water-cooling wall shoe,
Effectively solve all problems in background above technology.
The utility model is that following technical solution is realized；
To achieve the goals above：A kind of Supercritical CFB Boiler water-cooling wall shoe；The device is by water-cooling wall, transverse direction
Homogenizing plate, vertical deflector, anti-friction protecting watt, water-cooling wall fin composition, the transverse direction annular in shape along the multiple tracks of water-cooling wall circumferentially
Homogenizing plate reticulates grid with vertical deflector group, and layering is mounted on four wall of burner hearth.It is characterized in that；The transverse direction homogenizing plate lacks
Mouth is corresponding with anti-friction protecting watt circular arc outer diameter, and wherein anti-friction protecting watt is welded on the fin of water screen tube both sides, lateral homogenizing plate
Level is welded in the middle part of anti-friction protecting watt, and the vertical deflector is vertically welded on water-cooling wall fin, the transverse direction homogenizing plate and
Multiple air holes are designed on vertical deflector, the lateral homogenizing plate being mounted on water-cooling wall must well-balanced distribution with vertical deflector.
The sticking wall flow of carrying material flush water cold wall can be made effectively to be dredged up and down using the present apparatus, reach material stream flow direction,
Material stream flow velocity is reduced, the adjustment for evacuating material stream and water-cooling wall is collided, and greatly reduces material particles to water-cooling wall cutting abrasion
Purpose.
In the utility model；Lateral homogenizing plate level is welded in the middle part of anti-friction protecting watt, can be protected to water cooling tube 1, and
It can be used for lateral homogenizing plate to be reliably connected, reduce the chance that particle is contacted with water-cooling wall, prevent water screen tube upper and lower from going out current situation
It wears in portion.
In the utility model；Multiple air holes are designed on lateral homogenizing plate, can slow down the flow velocity of adherent ash stream and change edge
The direction of wall ash stream, make in stove part will not be formed high flow rate, high concentration particulate matter, existing abrasionproof beam rebounded due to flying dust
Conflagration causes bed temperature to increase, local Fast Wearing problem, using lateral homogenizing plate, effectively solves water-cooling wall concentrated wear
Problem, and improve heat-transfer effect, improve boiler efficiency.
In the utility model；Vertical deflector designs multiple air holes, can play the flow velocity slowed down along water-cooling wall material, and
Change along the direction of wall ash stream, the concentrated wear to water-cooling wall along side wall ash stream can be reduced.
The utility model has following advantageous effect compared with prior art：
The utility model changes abrasionproof beam design structure defect in existing technology, avoids the material of reflux quickly again
Secondary participation burning, can be effectively so that the material distribution of burner hearth be more uniform, and the solid material distriution declined along furnace height more becomes
Rationally, the sticking wall flow of water-cooling wall is effectively dredged up and down, to fundamentally solve water screen tube wear problem, is improved
Boiler bed temperature reduces exhaust gas temperature, reduces attemperation water flow raising boiler efficiency, plays the effect of energy-saving and emission-reduction.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；；
In figure：1. water-cooling wall；2. lateral homogenizing plate；3. vertical deflector；4. 5. air holes of anti-friction protecting watt, 6. fin
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.
The utility model is related to a kind of Supercritical CFB Boiler water-cooling wall shoes, as shown in Figure 1；The device is by water cooling
Wall 1, lateral homogenizing plate 2, vertical deflector 3, anti-friction protecting watt 4, water-cooling wall fin 6 form, along the multiple tracks of water-cooling wall 1 circumferentially
3 groups of lateral homogenizing plate 2 annular in shape and vertical deflector reticulate grid, and layering is mounted on four wall of burner hearth.It is characterized in that；
Transverse direction 2 notch of homogenizing plate is corresponding with 4 circular arc outer diameter of anti-friction protecting watt, and wherein anti-friction protecting watt 4 is welded on water screen tube both sides
Fin 6 on, 2 level of lateral homogenizing plate is welded on the middle part of anti-friction protecting watt 4, and the vertical deflector 3 is vertically welded in water-cooling wall
On fin 6, multiple air holes 5 are designed on the transverse direction homogenizing plate 2 and vertical deflector 3, the transverse direction on water-cooling wall flows
Plate 2 must well-balanced distribution with vertical deflector 3.
In embodiment shown in Fig. 1；Anti-friction protecting watt 4 is made according to 1 tube wall outer arc of water-cooling wall, and is welded on the fin of water screen tube
On piece 6, avoids welding with water screen tube, water cooling tube 1 can be protected.Secondly lateral 2 notch of homogenizing plate is justified with anti-friction protecting watt 4
Arc outer diameter is corresponding, and 2 level of lateral homogenizing plate is welded on 4 middle part of anti-friction protecting watt, it can be achieved that the welding of lateral homogenizing plate 2 is reliable
Property, and prevent flying dust rebound from causing water-cooling wall concentrated wear.
As shown in Figure 1；By designing multiple air holes 5 on lateral homogenizing plate 2 and vertical deflector 3, can make to flow downward
Fly ash granule slips down at lateral homogenizing plate 2, and it is zero that gliding speed, which lowers, soft landing, is just started again by air holes screening
Decline, so that the sticking wall flow of carrying material is effectively dredged up and down, prevent the concentrated wear to water-cooling wall along side wall ash stream,
Design installation in this way, furnace heat transfer coefficient will not reduce, fluid field in furnace does not have any change.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, although ginseng
The utility model is described in detail according to previous embodiment, it for those skilled in the art, still can be with
Technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features, all
Within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this practicality
Within novel protection domain.
Claims (3)
1. a kind of Supercritical CFB Boiler water-cooling wall shoe, the device by water-cooling wall (1), lateral homogenizing plate (2), vertically lead
Flowing plate (3), anti-friction protecting watt (4), water-cooling wall fin (6) composition, the transverse direction annular in shape along the multiple tracks of water-cooling wall (1) circumferentially is
Flowing plate (2) reticulates grid with vertical deflector (3) group, and layering is mounted on four wall of burner hearth, it is characterised in that；The transverse direction is equal
Flowing plate (2) notch is corresponding with anti-friction protecting watt (4) circular arc outer diameter, and wherein anti-friction protecting watt (4) is welded on the fin of water screen tube both sides
On piece (6), lateral homogenizing plate (2) level is welded in the middle part of anti-friction protecting watt (4), and the vertical deflector (3) is vertically welded in water
On cold wall fin (6), multiple air holes (5) are designed on the transverse direction homogenizing plate (2) and vertical deflector (3), are mounted on water-cooling wall
On lateral homogenizing plate (2) and vertical deflector (3) must well-balanced distribution.
2. Supercritical CFB Boiler water-cooling wall shoe according to claim 1, it is characterised in that；The transverse direction flows
Plate (2) level is welded in the middle part of anti-friction protecting watt (4).
3. Supercritical CFB Boiler water-cooling wall shoe according to claim 1, it is characterised in that；The transverse direction flows
Multiple air holes (5) are designed on plate (2) and vertical deflector (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721561338.XU CN207622000U (en) | 2017-11-12 | 2017-11-12 | Supercritical CFB Boiler water-cooling wall shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721561338.XU CN207622000U (en) | 2017-11-12 | 2017-11-12 | Supercritical CFB Boiler water-cooling wall shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207622000U true CN207622000U (en) | 2018-07-17 |
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ID=62829462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721561338.XU Active CN207622000U (en) | 2017-11-12 | 2017-11-12 | Supercritical CFB Boiler water-cooling wall shoe |
Country Status (1)
| Country | Link |
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| CN (1) | CN207622000U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730948A (en) * | 2018-09-12 | 2018-11-02 | 哈尔滨理工大学 | A kind of biomass boiler water-cooling wall damage-proof device |
| CN111678114A (en) * | 2020-05-19 | 2020-09-18 | 江苏科环新材料有限公司 | Method for enabling high-frequency remelting structure of water-cooled wall tube bank coating to be heated uniformly |
-
2017
- 2017-11-12 CN CN201721561338.XU patent/CN207622000U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730948A (en) * | 2018-09-12 | 2018-11-02 | 哈尔滨理工大学 | A kind of biomass boiler water-cooling wall damage-proof device |
| CN111678114A (en) * | 2020-05-19 | 2020-09-18 | 江苏科环新材料有限公司 | Method for enabling high-frequency remelting structure of water-cooled wall tube bank coating to be heated uniformly |
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