CN207196478U - CFB boiler water screen tube abrasion-resistant diversion - Google Patents
CFB boiler water screen tube abrasion-resistant diversion Download PDFInfo
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- CN207196478U CN207196478U CN201721225360.7U CN201721225360U CN207196478U CN 207196478 U CN207196478 U CN 207196478U CN 201721225360 U CN201721225360 U CN 201721225360U CN 207196478 U CN207196478 U CN 207196478U
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- wear strip
- screen tube
- shaped wear
- water screen
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Abstract
It the utility model is related to a kind of CFB boiler water screen tube abrasion-resistant diversion, structure is to be provided with rows of L-shaped wear strip laterally outside in the water screen tube being longitudinally arranged side by side, the L-shaped wear strip is in strip structure, L-shaped wear strip bottom bottom surface and side bottom surface angle are towards water screen tube, the bottom bottom surface of L-shaped wear strip is provided with fixed feet, L-shaped wear strip is fixed on by fixed feet on the fin between water screen tube, L-shaped wear strip is away from leaving certain interval between water screen tube, friction-proof piece has laterally been set in a row between rows of L-shaped wear strip, friction-proof piece side is provided with the groove to match with water screen tube profile, friction-proof piece is fixedly welded on fin.With water screen tube service life can be increased, while the heat transfer effect of water-cooling wall is maintained to greatest extent.
Description
Technical field
The Anti-wear Technology of CFB boiler is the utility model is related to, is specifically related to a kind of CFB boiler water screen tube abrasionproof water conservancy diversion
Device.
Background technology
CFB (recirculating fluidized bed) combustion technologies are by the clean coal combustion technology of market highly recognition, with it efficiently, low dirt
Dye, load regulatory control good the advantages that strong to coal adaptability, at home and abroad it is widely used and develops.And such as
What prevents CFB boiler furnace wall cooling abrasion booster to be their ability to long-term safety, the key of stable operation.And for water screen tube
Abrasion mainly have following several situations：Abrasion, lower furnace portion wall with refractory lining, refracto and the water screen tube transitional region tube wall of water screen tube
Four corner regions of abrasion and burner hearth transducer wall's abrasion, specific the reason for being formed is by coal ash, unreacted stone in boiler
The impurity particles such as lime stone, limestone desulfurization reaction product, in the presence of boiler is sent into wind-force, these particles are entrained in by flue gas
Moved upwards in burner hearth, form the particle flux of high speed, will fallen in the different height portions bulky grain of burner hearth along burner hearth side wall,
The interior circulation of material is formed, the material of these adherent whereabouts forms sticking wall flow, is the most important original of boiler water-wall tube abrasion
Cause.Existing wear strip Anti-wear Technology is exactly to make to destroy the flow velocity of sticking wall flow particle and flow direction so as to serve certain abrasionproof
With, improve the service life of boiler to a certain extent, but the life-span that overall abrasionproof effect is not high, wear strip uses in itself
Also do not grow and the heat exchange of water-cooling wall can be influenceed again if the density for increasing wear strip in a row, and pyrolytic coating Anti-wear Technology needs
Substantial amounts of fund is put into, and service life is short, and concentrated wear is caused after coming off, and finds even booster blowing out not in time.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of CFB boiler water screen tube abrasionproof water conservancy diversion that is used for and filled
Put, buffering and guide functions can be played to the flow velocity of the material particles in boiler, reduce the abrasion of water screen tube, extend water cooling
The service life of wall.
In order to solve the above technical problems, the technical solution adopted in the utility model is：In the water-cooling wall being longitudinally arranged side by side
Pipe is provided with rows of L-shaped wear strip laterally outside, and the L-shaped wear strip be in strip structure, L-shaped wear strip bottom bottom surface with
Side bottom surface angle is provided with fixed feet towards water screen tube, the bottom bottom surface of L-shaped wear strip, and L-shaped wear strip is fixed by fixed feet
On fin between water screen tube, L-shaped wear strip away from leaving certain interval between water screen tube, rows of L-shaped wear strip it
Between laterally set friction-proof piece in a row, friction-proof piece side is provided with the groove to match with water screen tube profile, and friction-proof piece is fixed
It is welded on fin.
As a kind of preferred scheme of the present utility model, distance is 15-60 centimetres between rows of L-shaped wear strip, and L-shaped is prevented
The side bottom surface of nog plate and the width of bottom bottom surface are 5-20 centimetres, the side bottom surface of L-shaped wear strip and bottom bottom surface angle be 90 degree-
160 degree, wherein L-shaped wear strip bottom bottom surface is fixed with fixed feet, and side bottom surface is vertical with horizontal direction, and its width of side bottom surface is less than
Bottom bottom surface.
As another preferred scheme of the present utility model, the bottom bottom width of the rows of L-shaped wear strip is under
Up and L-shaped wear strip is incremented by successively from top to bottom apart from water screen tube spacing in a row and L-shaped wear strip bottom bottom surface and abrasionproof
Piece projects do not coincide in the horizontal direction.
As another preferred scheme of the present utility model, the L-shaped wear strip is polylith, and fixed feet is arranged on bottom bottom
Middle face position, the overlapping coincidence of part, described friction-proof piece between two blocks of adjacent L-shaped wear strips in adjacent side be present
Between set in overlapping fitting.
There is advantages below using the utility model of above-mentioned technical proposal：Water screen tube is provided with rows of laterally outside
That the wear strip of L-shaped structure, the L-shaped wear strip bottom surface respectively arranged and side can keep out and disperse in the gas of high temperature high fever
Grain, the effect of collecting can be played for the particle for passing through top, can be collided when the particle of these high speeds runs into wear strip
Or collect and change original trend, it can also be collided between the particle of these conversion trends and the particle for not having change trend
And then the quantity of impurity particle grain and the impulsive force to water screen tube in sticking wall flow are reduced, it can be good at cooperateing with friction-proof piece to enter
The overall abrasionproof of row the heat exchange influence on water-cooling wall but also very little not only；The width of L-shaped wear strip and apart from water screen tube length in a row
Change the prevention particle stream that can reach optimal while reduce the influence to water-cooling wall heat exchange as far as possible；Two pieces of adjacent L-shaped abrasionproofs
Exist between plate in adjacent side part overlapping coincidence and friction-proof piece between set in overlapping fitting, so also can further hinder
Keep off particle flux and improve abrasionproof effect；And wherein, distance, the width of side bottom surface and bottom bottom surface, side between rows of L-shaped wear strip
The setting of bottom surface and bottom bottom surface angle concrete numerical value and further improve abrasionproof effect, while side as the case may be
Bottom surface is vertical with horizontal direction, its width of side bottom surface is less than such set in bottom bottom surface can also strengthen overall abrasionproof effect.
In a word, the L-shaped friction-proof piece installed in this way, can making particle, whereabouts reduces when rising and by its
Movement velocity and kinetic energy so that the particle on top is collected, and is reduced the impact to water screen tube and is added service life, together
When maintain the heat transfer effect of water-cooling wall to greatest extent.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, drawings in the following description are only the utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is CFB boiler water screen tube abrasion-resistant diversion structural representation；
Fig. 2 is Fig. 1 right view；
Fig. 3 is the utility model L-shaped wear strip and the structural representation of fixed feet；
The structural representation of the single friction-proof pieces of Fig. 4 and water screen tube.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Embodiment one, as shown in Fig. 1, be provided with rows of L-shaped laterally outside in the water screen tube 1 being longitudinally arranged side by side
Wear strip 3, the L-shaped wear strip 3 are in strip structure, the bottom bottom surface 301 of L-shaped wear strip 3 and the angle of side bottom surface 302 towards water
Cold wall pipe 1, the bottom bottom surface 301 of L-shaped wear strip 3 are provided with fixed feet 4, and L-shaped wear strip 3 is fixed on water-cooling wall by fixed feet 4
On fin 2 between pipe 1, L-shaped wear strip 3 is horizontal between rows of L-shaped wear strip 3 away from leaving certain interval between water screen tube 1
To friction-proof piece 5 has been set in a row, the side of friction-proof piece 5 is provided with the groove to match with the profile of water screen tube 1, and friction-proof piece 5 is fixed
It is welded on fin 2.
Embodiment two, as shown in Figures 2 to 4, on the basis of embodiment one, the bottom bottom surface of rows of L-shaped wear strip 3
301 width are from lower to upper and L-shaped wear strip 3 is incremented by successively from top to bottom apart from the spacing of water screen tube 1 in a row, while L-shaped abrasionproof
The bottom bottom surface 301 of plate 3 projects in the horizontal direction with friction-proof piece 5 does not coincide, and specially friction-proof piece 5 is projected in bottom bottom surface
Between 301 projections and water screen tube 1, so that when particle granules fall from L-shaped wear strip 3 or friction-proof piece 5 as far as possible again
Erosive wear is carried out to L-shaped wear strip 3 or friction-proof piece 5.L-shaped wear strip 3 can be polylith, and fixed feet 4 is arranged on bottom bottom surface 301
Medium position, the overlapping coincidence of part between two blocks of adjacent L-shaped wear strips 3 in adjacent side be present, be also between friction-proof piece 5
Overlapping fitting is set, so that rows of L-shaped wear strip 3 and friction-proof piece 5 fitting itself is close, reduction particle granules by
Flushing of the gap to water screen tube.Abrasionproof effect it is fine or not between above-mentioned each part specifically apart from size and L-shaped wear strip 3
There is also certain contact for the bottom width setting of body.Distance is 15-60 centimetres between rows of L-shaped wear strip 3, L-shaped abrasionproof
The side bottom surface 302 of plate 3 and the width of bottom bottom surface 301 are 5-20 centimetres, the side bottom surface 302 and bottom bottom surface of L-shaped wear strip 3
301 angles are 90 degree of -160 degree, and wherein bottom bottom surface 301 is fixed with fixed feet 4, and side bottom surface 302 is vertical with horizontal direction, side bottom
Its width of face 302 is less than bottom bottom surface 301, and after above-mentioned setting, these wear strips can form one being capable of maximum magnitude
Stop the barrier of particle, the particle stream of high-speed and high-temperature in stove is cached and water conservancy diversion, and then reduce particle stream to water screen tube
Abrasion is rinsed, also takes into account the heat transfer effect of water screen tube simultaneously.
When boiler works, impurity particle brushes with air-flow, is flowed up by centre, during flowing up not
Break and moved to boiler periphery, then partly start to fall because the upward buoyancy being subject to is reduced.The particle of rising runs into L-shaped abrasionproof
When plate 3 is by the outside of bottom bottom surface 301 and side bottom surface 302, slow down due to collision, L-shaped wear strip 3 also functions to shunting and made
With, also begin to whereabouts because upward buoyancy reduces by the particle on its top and collect bottom bottom surface 301, then partial particulate arrival
Not water screen tube 1, the particle of part pass through the stop of friction-proof piece again, do not become at water screen tube 1 particle flux or only
There is seldom particle, greatly reduced so that water screen tube 1 wears.L-shaped wear strip 3 is not bonded water screen tube 1, and has one
Fixed gap is smaller for the flow effect of hot-air at water screen tube 1, so as to farthest reduce setting for abrasionproof equipment
Put the influence of the heat exchange to water screen tube 1.
The schematical embodiment of the utility model is the foregoing is only, is not limited to model of the present utility model
Enclose, any those skilled in the art on the premise of the utility model design and principle is not departed from the equivalent variations made and
Modification, the scope of the utility model protection all should be belonged to.
Claims (4)
- A kind of 1. CFB boiler water screen tube abrasion-resistant diversion, it is characterised in that：On the outside of the water screen tube being longitudinally arranged side by side Rows of L-shaped wear strip is horizontally arranged with, the L-shaped wear strip is in strip structure, L-shaped wear strip bottom bottom surface and side bottom surface Angle is provided with fixed feet towards water screen tube, the bottom bottom surface of L-shaped wear strip, and L-shaped wear strip is fixed on water cooling by fixed feet On fin between wall pipe, L-shaped wear strip is away from certain interval is left between water screen tube, between rows of L-shaped wear strip laterally Friction-proof piece is set in a row, friction-proof piece side is provided with the groove to match with water screen tube profile, and friction-proof piece is fixedly welded on On fin.
- 2. CFB boiler water screen tube abrasion-resistant diversion according to claim 1, it is characterised in that：Rows of L-shaped abrasionproof Distance is 15-60 centimetres between plate, and the side bottom surface of L-shaped wear strip and the width of bottom bottom surface are 5-20 centimetres, L-shaped wear strip Side bottom surface and bottom bottom surface angle are 90 degree of -160 degree, and wherein L-shaped wear strip bottom bottom surface is fixed with fixed feet, side bottom surface and water Square to vertical, its width of side bottom surface is less than bottom bottom surface.
- 3. CFB boiler water screen tube abrasion-resistant diversion according to claim 1, it is characterised in that：The rows of L-shaped The bottom bottom width of wear strip from lower to upper and L-shaped wear strip it is incremented by successively from top to bottom apart from water screen tube spacing in a row and L-shaped wear strip bottom bottom surface projects in the horizontal direction with friction-proof piece not to coincide.
- 4. CFB boiler water screen tube abrasion-resistant diversion according to claim 1, it is characterised in that：The L-shaped wear strip For polylith, fixed feet is arranged on bottom bottom surface medium position, portion be present in adjacent side between two blocks of adjacent L-shaped wear strips Point overlapping coincidence, set in overlapping fitting between described friction-proof piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721225360.7U CN207196478U (en) | 2017-09-22 | 2017-09-22 | CFB boiler water screen tube abrasion-resistant diversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721225360.7U CN207196478U (en) | 2017-09-22 | 2017-09-22 | CFB boiler water screen tube abrasion-resistant diversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207196478U true CN207196478U (en) | 2018-04-06 |
Family
ID=61786680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721225360.7U Active CN207196478U (en) | 2017-09-22 | 2017-09-22 | CFB boiler water screen tube abrasion-resistant diversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207196478U (en) |
-
2017
- 2017-09-22 CN CN201721225360.7U patent/CN207196478U/en active Active
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| GR01 | Patent grant | ||
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Address after: 450000 Zhengzhou high tech Industrial Development Zone, Henan, Holly Street, No. 7 Patentee after: Zhengzhou Sanzhong Energy Technology Co., Ltd. Address before: 450000 Zhengzhou high tech Industrial Development Zone, Henan, Holly Street, No. 7 Patentee before: Zhengzhou Sanzhong Wear-resisting Technology Co., Ltd. |