CN207471523U - A kind of abrasion-proof structure of boiler water wall - Google Patents
A kind of abrasion-proof structure of boiler water wall Download PDFInfo
- Publication number
- CN207471523U CN207471523U CN201720920982.5U CN201720920982U CN207471523U CN 207471523 U CN207471523 U CN 207471523U CN 201720920982 U CN201720920982 U CN 201720920982U CN 207471523 U CN207471523 U CN 207471523U
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- China
- Prior art keywords
- baffle plate
- abrasion
- boiler water
- proof structure
- water wall
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Abstract
The utility model discloses a kind of abrasion-proof structures of boiler water wall, and including water screen tube, installed part and baffle plate, installed part is equipped with the groove of annular, and baffle plate is arc elastic plate, and baffle plate is connected with groove.The shape of baffle plate itself includes the round and smooth globoidal structure in many places, and good guide functions can be played to ash particle, avoid excessive bump stroke, play the role of good abrasionproof, improve the service life of baffle plate；Dismountable baffle plate can bring more easily effect to installing and overhauling simultaneously, and installation junction is more smooth, reduces the friction with ash particle, abrasionproof effect is more preferable.
Description
Technical field
The utility model is related to a kind of boiler water wall Anti-wear Technologies, and in particular to a kind of abrasionproof knot of boiler water wall
Structure.
Background technology
Recirculating fluidized bed (CFB) boiler is a kind of new combustion equipment to grow up in recent years in China, with it efficiently
The high-performance of rate low stain is advanced by leaps and bounds.But CFB is worn compared with other boilers than more serious.The common abrasion of boiler is
High speed grey particle washes away many variations caused by collision heating surface from different angles, 3.22 powers of wear extent and cigarette speed into
Direct ratio, and increase with the concentration of grey particle and increase.Since fluidized-bed combustion boiler is using fluidized bed combustion mode, the coal particle shape in stove
Form into cluster of grains moves in stove, the solid material (stream of facing the wall and meditating) to flow down along wall surface and the solid material moved upwards in stove
(center stream) direction of motion is on the contrary, generate vortex flow, along the solid material that burner hearth wall surface flows down in juncture area generation flowing side
To change, to water screen tube generation wash away.Big additionally, due to emulsion zone material concentration, flow velocity is high, and the frictional force of formation is larger,
Easily cause the abrasion of water screen tube.Being seriously worn for water screen tube causes the boiler operatiopn period short, frequently opens, stops boiler and make
Into the increase of operating cost.
In view of the above problems, usually setting baffle plate inside burner hearth, change the path that ash content falls in this way,
To achieve the purpose that reduce the abrasion of equipment heating surface.But there is the defects of abrasion dispersion and abrasion displacement in this mode, i.e.,：
Welding baffle plate will seriously change equipment surface planarization, and fluid will generate vortex, vortex at random geometry structure
Generation is several times as much as wear extent caused by advection, single bottom abrasion is distributed to multiple positions, every one of baffle plate root
The base material in portion will all generate abrasion, and one of baffle plate root abrasion topmost is particularly acute.
In addition, also there is the defects of construction gap in the prior art, i.e.,：The equipment gone into operation through operation after a period of time,
Heated part surface has deformed upon, and the baffle plate made according to mechanical drawing can not be completely whole with water-cooling wall shape
Into slitless connection.Gap under the prior art between baffle plate and base material, it is impossible to eliminate, abrasive material falls from top to bottom, in this portion
Position will generate base material larger abrasion, the insecurity and pipe explosion accident rate of increase equipment operation.
The above-described prior art uses the baffle arrangement of non-dismountable formula, when being installed mostly using welding
Mode, mounting process is more numerous and diverse, and installation accuracy can not ensure；When needing to overhaul and extremely inconvenient, renovation technique when safeguarding
Complexity, time-consuming, and the work surface intensity by repairing cannot be guaranteed, and be more easy to be worn during subsequent use.
Utility model content
To solve the above-mentioned problems, the utility model is provided based on RTWP (recombination technology of
Wear plate) Anti-wear Technology a kind of boiler water wall abrasion-proof structure, it is desirable to provide a kind of abrasionproof is functional, dismounting side
Just, the abrasion-proof structure of easy access.
The technical solution of the utility model is：
A kind of abrasion-proof structure of boiler water wall, including water screen tube, installed part and baffle plate, installed part is circular gold
Belong to part and be fixed on water screen tube, installed part is equipped with the groove of annular.
Specifically, the groove face of groove is sunk type arcwall face；Baffle plate is arc elastic plate, and baffle plate and groove
It is connected；For evagination arcwall face at the outer of baffle plate, and baffle plate upper surface is concave curved surface, the lower surface of baffle plate
Equipped with muscle structure, muscle structure is located at the boundary of lower surface and outer；The interior of baffle plate is evagination arcwall face at.
Groove uses the groove face of sunk type, and in the concave surface for the sinking that weight bearing area is concentrated, load-bearing capacity is strong, works as baffle plate
It installs and stablizes when being fixed in groove, disclosure satisfy that great shock loading requirement.
Baffle plate and the principle of groove cooperation are similar to the principle of snap ring, and baffle plate is the annular element disconnected, therefore
Baffle plate, which has, is similar to the performance that snap ring can be shunk.The state juxtaposition shunk is at when installing baffle plate
Entering water screen tube, baffle plate is caught in groove when slipping down to groove along installed part, under the action of baffle plate natural resiliency power, folding
Flowing plate and groove cooperation are close.Using same method when taking out baffle plate, baffle plate contraction is first made to exit groove, then by baffling
Plate takes out.
The concave curved surface structure design of baffle plate upper surface is in order to play good guiding role to ash particle, simultaneously
Arcwall face reduces bump stroke of the ash particle to baffle plate, is conducive to improve the service life of baffle plate.
Muscle structure on baffle plate can be continous way arrangement or arranged for interval, its role is to：Keep baffle plate with
Stablizing relatively for groove, avoids baffle plate from deflecting in vertical direction；Muscle structure is by baffle plate and groove contact surface simultaneously
The gap of lower end covers, and ash particle is avoided to enter the joint face of groove and baffle plate, baffle plate and water screen tube are caused to wear.
Further, the muscle feature cross-section be rectangle or triangle, and muscle structure have one side it is tight with installed part
Closely connected conjunction.
Further, the interior edge of the baffle plate is bent to lower surface.The meaning set in this way is to play ash particle
Ash particle is guided into the axial location of water screen tube by guiding role, avoids generating vortex.
Further, the bending place transition face on edge is cambered surface in the baffle plate.Setting baffle plate in this way is to ash particle
Guide effect is more preferable.
Further, the baffle plate is equipped with sandblasting layer, the upper surface of sandblasting layer covering baffle plate and closing baffling
Plate and the gap of installed part junction.
Further, the height of sandblasting layer covering baffle plate top water screen tube is at least 200mm.
It generally requires and the surface roughness processing of sandblasting layer is reached Sa3 grades, the meaning of setting sandblasting layer is for resistance to height
Warm layer provides attachment surface, makes the longer life expectancy of high-temperature-resistant layer.
Further, the sandblasting layer is equipped with high-temperature-resistant layer.
Further, the high-temperature-resistant layer is the cermet material layer of spraying, and thickness is at least 1mm, high-temperature-resistant layer
Top edge covers the top edge of sandblasting layer and is contacted with water screen tube, and high-temperature-resistant layer is with water screen tube junction to seamlessly transit
Inclined-plane or rounding off cambered surface.
Further, it is additionally provided with scuff-resistant coating on the high-temperature-resistant layer.The scuff-resistant coating is made of inorganic wear-preventing paint
Cured coating layer, the upper end of scuff-resistant coating is less than the upper end of high-temperature-resistant layer, and the connection of scuff-resistant coating upper end and high-temperature-resistant layer upper end
Locate the inclined-plane or the cambered surface of rounding off to seamlessly transit.
Scuff-resistant coating is in direct contact with ash particle, and the surface of scuff-resistant coating is identical with baffle plate upper surface concave arc, Ke Yi
Have the function of to be oriented to during ash particle contacts, less bump stroke prolongs the service life.
Compared with prior art, the beneficial effects of the utility model are：
1. the utility model uses dismountable baffle arrangement, convenient for the installation and maintenance of baffle plate, less baffling
The time cost of plate installation maintenance, and the effect for dismantling the more ordinary repair and maintenance of effect of repair and maintenance is more preferable.
2. the groove of the utility model setting sunk type and the baffle plate with groove cooperation, installation is reliable and stable, exempts
The defects of abrasion dispersion present in original technology and abrasion displacement.
3. the utility model setting sandblasting layer, high-temperature-resistant layer, scuff-resistant coating enclose the seam of baffle plate and installed part junction
Gap overcomes in original technology and there is the defects of construction gap.
4. the upper surface of the utility model baffle plate is concave curved surface, while the interior edge of baffle plate is equipped with bending structure,
Two kinds of structures play good guiding role, and positive effect is played to avoiding being formed to be vortexed inside wall-cooling surface.
Description of the drawings
Fig. 1 is the whole composition sectional view of water screen tube and baffle plate.
Fig. 2 is the first partial sectional view at A in Fig. 1.
Fig. 3 is second of partial sectional view at A in Fig. 1.
In the figures above, reference numeral is corresponding entitled：1- water screen tubes, 2- baffle plates, edge in 201-, 202- muscle
Structure, 203- outers, 3- high-temperature-resistant layers, 4- scuff-resistant coatings, 5- installed parts.
Specific embodiment
The technical solution of the utility model is described in detail below, it should be noted that following is only this practicality
Novel preferred embodiment for those of ordinary skill in the art, design is created not departing from the utility model
Under the premise of, various modifications and improvements can be made, these should belong to the scope of protection of the utility model.
Embodiment one
As shown in Figure 1 and Figure 2, present embodiment discloses a kind of abrasion-proof structure of boiler water wall, including water screen tube 1, peace
Piece installing 5 and baffle plate 2, installed part 5 are circular metalwork and are fixed on water screen tube 1 that installed part 5 is equipped with annular
Groove, the groove face of groove is sunk type arcwall face；Baffle plate 2 is arc elastic plate, and baffle plate 2 is connected with groove；
It is evagination arcwall face at the outer 203 of baffle plate 2, and 2 upper surface of baffle plate is concave curved surface, the lower surface of baffle plate 2 is set
There is muscle structure 202, muscle structure 202 is located at the lower surface of baffle plate 2 and the boundary of 2 outer 203 of baffle plate；Baffle plate 2 it is interior
It is evagination arcwall face at along 201.
Preferably, baffle plate 2 is the annular element disconnected, two endpoint is equipped with snap collar, and snap collar is compressed for clamping
Baffle plate 2.
202 cross section of muscle structure is rectangle or triangle, and muscle structure 202 has one side to be fitted closely with installed part 5.
Preferably, 202 cross section of muscle structure is triangle, and muscle structure 202 is set for continous way.
The interior of baffle plate 2 is bent along 201 to lower surface, and bending place transition face is cambered surface.
Preferably, bending place is 90 °.
Baffle plate 2 is equipped with sandblasting layer, and sandblasting layer covers the upper surface of baffle plate 2 and closing baffle plate 2 connects with installed part 5
Connect the gap at place.
Preferably, sandblasting layer uses quartz sand material in this implementation.
The height of sandblasting layer covering 2 top water screen tube 1 of baffle plate is at least 200mm.
Preferably, the height of sandblasting layer covering 2 top water screen tube 1 of baffle plate is 200mm.
Sandblasting layer is equipped with high-temperature-resistant layer 3, and high-temperature-resistant layer 3 is the cermet material layer of spraying, and thickness is at least 1mm,
3 top edge of high-temperature-resistant layer covers the top edge of sandblasting layer and is contacted with water screen tube 1, and high-temperature-resistant layer 3 is connect with water screen tube 1
Locate the inclined-plane or the cambered surface of rounding off to seamlessly transit.
Preferably, high-temperature-resistant layer 3 is cemented carbide material, is covered on sandblasting layer using arc spraying technology.
Preferably, high-temperature-resistant layer 3 and water-cooling wall junction are the inclined-plane seamlessly transitted.
Scuff-resistant coating 4 is additionally provided on high-temperature-resistant layer 3.
Scuff-resistant coating 4 is cured coating layer made of inorganic wear-preventing paint, and the upper end of scuff-resistant coating 4 is upper less than high-temperature-resistant layer 3
End, and 4 upper end of scuff-resistant coating and the junction of 3 upper end of high-temperature-resistant layer are the inclined-plane seamlessly transitted or the cambered surface of rounding off.
Embodiment two
As shown in Figure 1, Figure 3, present embodiment discloses a kind of abrasion-proof structure of boiler water wall, including water screen tube 1, peace
Piece installing 5 and baffle plate 2.
The present embodiment and embodiment one the difference lies in：
202 cross section of muscle structure is rectangle or triangle, and muscle structure 202 has one side to be fitted closely with installed part 5.
Preferably, 202 cross section of muscle structure is rectangle, and muscle structure 202 is set for continous way.
The interior of baffle plate 2 is bent along 201 to lower surface, and bending place transition face is cambered surface.
Preferably, bending place is obtuse angle.
The structure of other component and connection relation are identical with embodiment one in the present embodiment, and details are not described herein again.
According to above-described embodiment, the utility model can be realized well.What deserves to be explained is based on above-mentioned design original
Reason, to solve the technical issues of similary, even if some made on architecture basics disclosed in the utility model are without substance
Change or polishing, used technical solution essence is still as the utility model, therefore it should also be as in the utility model
In protection domain.
Claims (10)
1. a kind of abrasion-proof structure of boiler water wall, which is characterized in that including water screen tube (1), installed part (5) and baffle plate
(2), installed part (5) is circular metalwork and is fixed on water screen tube (1) that installed part (5) is equipped with the groove of annular, recessed
The groove face of slot is sunk type arcwall face；Baffle plate (2) is arc elastic plate, and baffle plate (2) is connected with groove；Baffling
For evagination arcwall face at the outer (203) of plate (2), and baffle plate (2) upper surface is concave curved surface, the following table of baffle plate (2)
Face is equipped with muscle structure (202), and muscle structure (202) is positioned at the boundary of the lower surface of baffle plate (2) and outer (203)；Baffle plate
(2) it is evagination arcwall face at interior edge (201).
A kind of 2. abrasion-proof structure of boiler water wall according to claim 1, which is characterized in that the muscle structure
(202) cross section is rectangle or triangle, and muscle structure (202) has one side to be fitted closely with installed part (5).
3. the abrasion-proof structure of a kind of boiler water wall according to claim 1, which is characterized in that the baffle plate (2)
Interior edge (201) bends to lower surface.
4. the abrasion-proof structure of a kind of boiler water wall according to claim 1, which is characterized in that in the baffle plate (2)
Bending place transition face along (201) is cambered surface.
A kind of 5. abrasion-proof structure of boiler water wall according to claim 1, which is characterized in that the baffle plate (2)
It is equipped with sandblasting layer, the upper surface of sandblasting layer covering baffle plate (2) and closing baffle plate (2) and the seam of installed part (5) junction
Gap.
A kind of 6. abrasion-proof structure of boiler water wall according to claim 5, which is characterized in that the sandblasting layer covering
The height of baffle plate (2) top water screen tube (1) is at least 200mm.
7. the abrasion-proof structure of a kind of boiler water wall according to claim 5, which is characterized in that set on the sandblasting layer
There is high-temperature-resistant layer (3).
A kind of 8. abrasion-proof structure of boiler water wall according to claim 7, which is characterized in that the high-temperature-resistant layer
(3) the cermet material layer for spraying, thickness are at least 1mm, and high-temperature-resistant layer (3) top edge covers the top edge of sandblasting layer
And contacted with water screen tube (1), high-temperature-resistant layer (3) and water screen tube (1) junction are the inclined-plane or round and smooth mistake seamlessly transitted
The cambered surface crossed.
A kind of 9. abrasion-proof structure of boiler water wall according to claim 7, which is characterized in that the high-temperature-resistant layer
(3) scuff-resistant coating (4) is additionally provided on.
A kind of 10. abrasion-proof structure of boiler water wall according to claim 9, which is characterized in that the scuff-resistant coating (4)
For cured coating layer made of inorganic wear-preventing paint, the upper end of scuff-resistant coating (4) is less than the upper end of high-temperature-resistant layer (3), and scuff-resistant coating
(4) junction of upper end and high-temperature-resistant layer (3) upper end is the inclined-plane seamlessly transitted or the cambered surface of rounding off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720920982.5U CN207471523U (en) | 2017-07-26 | 2017-07-26 | A kind of abrasion-proof structure of boiler water wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720920982.5U CN207471523U (en) | 2017-07-26 | 2017-07-26 | A kind of abrasion-proof structure of boiler water wall |
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| Publication Number | Publication Date |
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| CN207471523U true CN207471523U (en) | 2018-06-08 |
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| CN201720920982.5U Active CN207471523U (en) | 2017-07-26 | 2017-07-26 | A kind of abrasion-proof structure of boiler water wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237054A (en) * | 2021-04-14 | 2021-08-10 | 充松峰 | Scaly lapping type wear-resistant plate and matching lapping method |
-
2017
- 2017-07-26 CN CN201720920982.5U patent/CN207471523U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237054A (en) * | 2021-04-14 | 2021-08-10 | 充松峰 | Scaly lapping type wear-resistant plate and matching lapping method |
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