CN106545847A - Circulating fluidized bed boiler water-cooling wall superconduction shoe - Google Patents
Circulating fluidized bed boiler water-cooling wall superconduction shoe Download PDFInfo
- Publication number
- CN106545847A CN106545847A CN201611123592.1A CN201611123592A CN106545847A CN 106545847 A CN106545847 A CN 106545847A CN 201611123592 A CN201611123592 A CN 201611123592A CN 106545847 A CN106545847 A CN 106545847A
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- Prior art keywords
- wear
- water
- resisting
- cooling wall
- resisting deflector
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention belongs to CFBB, more particularly to circulating fluidized bed boiler water-cooling wall superconduction shoe.Described device includes emulsion zone water screen tube（1）, horizontal wear-resisting deflector group（2）, vertical wear-resisting deflector group（3）, water-cooling wall connecting plate（4）, upper air vent（5）With wear-resistant temperature-resistant shield watt（6）.Horizontal wear-resisting deflector group（2）With vertical wear-resisting deflector group（3）Layering constitutes different netted grids on water-cooling wall wall installed in four wall of burner hearth.Emulsion zone water screen tube（1）It is vertically mounted on horizontal deflector group（2）Groove arc at；Vertical wear-resisting deflector group（3）It is vertically set on horizontal wear-resisting deflector group（2）On, it is parallel with water screen tube；Water-cooling wall connecting plate（4）It is arranged between two neighboring water screen tube.The device makes the rising of material and the vortex tangent line for the being formed not direct friction water-cooling wall pipeline that lands, so as to avoid face the wall and meditate stream angle, contact wear of the vortex to water-cooling wall.
Description
Technical field
The invention belongs to CFBB, more particularly to circulating fluidized bed boiler water-cooling wall superconduction shoe.
Background technology
CFB boiler has been subjected to the development course of more than two decades in China, with the popularization and application of CFBB,
Its high combustion efficiency, fuel tolerance are wide, combustion adjustment is simple, load adjustment amplitude is big, ash comprehensive utilization rate high, pollutant
Discharge the extensive approval that low advantage has been obtained for power industry.Meanwhile, CFB CFBBs are a kind of efficiently low dirts
The New-type boiler of dye, is mainly characterized by many circulations of imitation frosted glass and desulfurizing agent Jing and is repeated, can reach NOxDischarge, 90%
Desulfuration efficiency, and have the advantages that fuel tolerance is wide, lime-ash is easy to comprehensive utilization.
But some problems are also spilt cruelly, heating surface wear and refractory wear is mainly shown as.In the mill being heated
In damage, either water pipe, steam pipe, smoke pipe or airduct, the lighter's abrasion cause thermal stress to change so as to be heated uneven, severe one
Cause booster or heating surface to reveal, when serious, cause boiler shutdown；Refractory wear can make flame retardant coating come off, Air Leakage Into Boilers or
Increase the heating surface that weares and teares, these all will affect boiler normally to use and safety and economic operation in various degree.
Simultaneously as its special combustion system, makes water screen tube, superheater tube, the wear problem of coal saving tube become system
About CFB boiler is safe and stable, economical operation key factor, particularly water screen tube abrasion is especially prominent.Existing CFB
Boiler water wall abrasionproof mode has respective deficiency, cause CFB boiler waterwall tube cracking problem for many years always no
To solution well, therefore it is very urgent to study more safe and reliable shoe.
The content of the invention
For the problem in background technology, the present invention provides circulating fluidized bed boiler water-cooling wall superconduction shoe, so as to
Effect a radical cure the contact wear of stream of facing the wall and meditating, angle vortex to water-cooling wall.
For achieving the above object, the present invention proposes following technical scheme：
Circulating fluidized bed boiler water-cooling wall superconduction shoe, described device include emulsion zone water screen tube（1）, laterally wear-resisting lead
Stream plate group（2）, vertical wear-resisting deflector group（3）, water-cooling wall connecting plate（4）, the laterally wear-resisting deflector group（2）It is resistance to vertical
Mill deflector group（3）Layering is arranged on four wall of burner hearth, laterally wear-resisting deflector group（2）With vertical wear-resisting deflector group（3）In water
Different netted grids are constituted on cold wall wall；The emulsion zone water screen tube（1）It is vertically mounted on horizontal deflector group（2）It is recessed
Groove circular arc；
The vertical wear-resisting deflector group（3）It is vertically set on horizontal wear-resisting deflector group（2）On, it is parallel with water screen tube；Institute
State water-cooling wall connecting plate（4）It is arranged between two neighboring water screen tube, it is parallel with water screen tube；
Described device also includes upper air vent（5）, the upper air vent（5）It is arranged on the water of water-cooling wall superconduction shoe
Cold wall wall top.
Further, described device also includes wear-resistant temperature-resistant shield watt（6）, the wear-resistant temperature-resistant shield watt（6）It is arranged on and most goes up
One layer of horizontal wear-resisting deflector group（2）With vertical wear-resisting deflector group（3）Infall, it is corresponding with water screen tube external diameter, it is buckled in
On water screen tube.
Further, the laterally wear-resisting deflector group（2）By polylith, laterally wear-resisting deflector head and the tail level superposition is constituted；
The interposition of the laterally wear-resisting deflector side is equipped with 1/2nd groove arcs（2-2）, two ends have one it is first
End a quarter groove arc（2-1）With a tail end a quarter groove arc（2-3）；
The groove arc of the laterally wear-resisting deflector is corresponding with water screen tube external diameter.
Further, the vertical wear-resisting deflector group（3）It is made up of the vertical wear-resisting deflector of polylith；
The vertical wear-resisting deflector upper and lower ends are the inclined plane that can be mutually butted, and two neighboring vertical wear-resisting deflector inclines
The interlaced setting in inclined-plane, multiple vertical wear-resisting deflectors are vertically sequentially overlapped, and side section is welded in water-cooling wall connecting plate（4）On.
Further, the upper air vent（5）Both sides are per adjacent two vertical wear-resisting deflector groups（3）Between arrange
2 water screen tubes.
Further, the two neighboring laterally wear-resisting deflector group（2）Between at intervals of 600mm.
Further, the laterally wear-resisting deflector group（2）With vertical wear-resisting deflector group（3）By multi-element alloy casting
Shaping, the main component of the alloy is W5CrNi10MoMn3, and alloy the upper limit temperature of heat tolerance reaches 1250 °C, tensile strength >=
560MPa。
The present invention also aims to provide a kind of CFBB, the boiler includes above-described recycle stream
Fluidized bed boiler water-cooling wall superconduction shoe.
The beneficial effects of the present invention is：The wear-resisting deflector of superconduction used in the present invention is divided to two kinds of transverse slat and riser, horizontal
Plate（Comb plate, comb joint）Solution is faced the wall and meditated stream, and riser solves vortex, shield watt protection water-cooling wall and transverse slat root.Transverse slat and riser are in water-cooling wall
Different grids are constituted on wall, its essence is the flow direction to dredge burner hearth endoparticle thing so as to form interior circulation, change material face
Material particles flow direction in corner in wall flow direction and thorax, makes material stream tend to center, and the vortex that the rising and landing of material are formed is cut
Line is not directly contacted with not direct friction water-cooling wall pipeline, so as to effect a radical cure the contact wear of stream of facing the wall and meditating, angle vortex to water-cooling wall.
Description of the drawings
Fig. 1 is the arrangement figure of emulsion zone transverse slat of the present invention and riser；
Fig. 2 is the horizontal deflector front view of the present invention；
Fig. 3 is that boiler water wall Thermal Protective watt installs partial view；
Fig. 4 is the vertical wear-resisting deflector figure of the present invention；
Fig. 5 is the arrangement of the wear-resisting deflector of upper air vent partial lateral and vertical horizontal of the present invention to wear-resisting deflector
Figure；
Fig. 6 is the top view that the present invention installs vertical wear-resisting deflector group at boiler corner；
Fig. 7 is the front section view of the upper air vent of the present invention.
In figure, 1- emulsion zone water-cooling walls, the horizontal wear-resisting deflectors of 2-, the vertical wear-resisting deflectors of 3-, 4- water-cooling wall connecting plates,
5- upper air vents, 6- antiwear heat resistings shield watt, 7- refractory material insulation materials, 8-CFB boiler casings, 2-1- head end a quarters
Groove arc, 1/2nd groove arcs of 2-2-, 2-3- tail end a quarter groove arcs.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiments of the present invention are made with detailed elaboration.
Fig. 1 is the arrangement figure of emulsion zone transverse slat of the present invention and riser, as shown in Figure 1, circulating fluidized bed boiler water
Cold wall superconduction shoe includes emulsion zone water screen tube 1 in CFBB, horizontal wear-resisting deflector group
2nd, vertical wear-resisting deflector group 3, water-cooling wall connecting plate 4, upper air vent 5, antiwear heat resisting shield watt 6.
The emulsion zone water screen tube 1 is vertically mounted at the groove arc of horizontal deflector group 2.It is described vertical wear-resisting to lead
Stream plate group 3 is vertically set in horizontal wear-resisting deflector group 2, parallel with water screen tube；The water-cooling wall connecting plate 4 is arranged on phase
It is between adjacent two water screen tubes, parallel with water screen tube；The upper air vent 5 is arranged on the water of water-cooling wall superconduction shoe
Cold wall wall top.
Between the two neighboring laterally wear-resisting deflector group 2 at intervals of 600mm.
Fig. 2 is the horizontal deflector front view of the present invention.Laterally laterally wear-resisting deflector is first by polylith for wear-resisting deflector group 2
The flat superposition composition of tail water.As shown in Fig. 2 laterally wear-resisting deflector is by four points of 1/2nd groove arc 2-2, head end
One of groove arc 2-1 and tail end a quarter groove arc 2-3 compositions, wherein, 1/2nd groove arc 2-2 are in horizontal stroke
To the centre position of wear-resisting deflector, a quarter groove arc is at the two ends of horizontal wear-resisting deflector.As shown in figure 3, laterally
/ 2nd groove arc 2-2 of wear-resisting deflector are corresponding with water screen tube external diameter；Four points of the head end of horizontal wear-resisting deflector
One of groove arc 2-1 be superimposed composition with the tail end a quarter groove arc initial and end level of previous piece of horizontal wear-resisting deflector
Groove semi arch, it is corresponding with water screen tube external diameter；Laterally the tail end a quarter groove arc 2-3 of wear-resisting deflector with it is latter
The head end a quarter groove arc initial and end level superposition composition groove semi arch of the horizontal wear-resisting deflector of block, with water screen tube
External diameter is corresponding, constitutes laterally wear-resisting deflector group, and horizontal deflector concave-board pin is welded on water-cooling wall connecting plate.
As shown in figure 3, the wear-resistant temperature-resistant shield watt 6 is arranged on most last layer, and laterally wear-resisting deflector group 2 is wear-resisting with vertical
3 infall of deflector group, it is corresponding with water screen tube external diameter, it is buckled on water screen tube.
Fig. 4 is the vertical deflector front view of the present invention, as shown in figure 4, vertical in the vertical wear-resisting deflector group 3
Wear-resisting deflector upper and lower ends are the inclined plane that can be mutually butted；Multiple vertical wear-resisting deflectors are vertically welded on water-cooling wall successively
On connecting plate, the interlaced setting of inclined plane of two neighboring vertical wear-resisting deflector.So that two vertical wear-resisting deflectors enter
During row docking, two inclined planes are neither contacted, and overlapped, and this allows for vertical wear-resisting deflector group and can be very good to overcome
Horizontal material stream, have interval between two vertical wear-resisting deflectors, it is to avoid vertical wear-resisting deflector expands with heat and contract with cold the shadow for causing
Ring.
Fig. 5 is the arrangement knot of the horizontal wear-resisting deflector for upper air vent part of the present invention and vertical wear-resisting deflector
Composition, the boiler water wall upper air vent left and right sides is per adjacent two vertical wear-resisting deflector groups（3）Between arrange 2 water
Cold wall pipe, as shown in Figure 5.
Invention arranges vertical in the multiple laterally wear-resisting deflector groups of emulsion zone arrangement between two horizontal wear-resisting deflector groups
Wear-resisting deflector group, forms the protection zone of closing so that exhaust port area has obtained sufficient protection.
Fig. 6 is that the present invention installs vertical wear-resisting deflector top view at boiler corner.
Fig. 7 is the front section view of the upper air vent of the present invention.
The wear-resisting deflector of superconduction of the present invention is divided to two kinds of transverse slat and riser, transverse slat（Comb plate, comb joint）Solution is faced the wall and meditated stream, riser solution
Certainly it is vortexed, protects watt protection water-cooling wall and horizontal version root.Transverse slat constitutes different grids on water-cooling wall wall with riser, and its essence is
To dredge the flow direction of burner hearth endoparticle thing so as to form interior circulation, change material and face the wall and meditate corner material particles stream in flow direction and thorax
To, make material stream tend to center, the vortex tangent line that the rising and landing of material are formed is not directly contacted with not direct friction water-cooled
Wall pipeline, so as to effect a radical cure the contact wear of stream of facing the wall and meditating, angle vortex to water-cooling wall.
The deflector of the present invention is molded by wear-resisting, high temperature resistant multi-element alloy casting, and its alloying component is
The yttriums such as W5CrNi10MoMn3, alloy material the upper limit temperature of heat tolerance reach 1250 °C, tensile strength >=560MPa,
Service life in boiler is reached 6 years.
The wear-resisting deflector of superconduction of the present invention must be a kind of liquid with nano repairing liquid matching operation, nano repairing liquid,
Its major function is to supplement the abrasion of water screen tube sub-portion, and temperature is adapted to nature and fills up uneven face and impaired face.It
Abrasionproof effect is it was verified that thickness measuring record display in 3 years, less than 0.1mm, in 5 years, thickness measuring record shows waterwall tube cracking, water
Cold wall abrasion is less than 0.15mm.
The above-mentioned specific embodiment of the present invention is just for the sake of preferably illustrating design and the scheme of the present invention, and should not
It is considered as limiting the scope of the invention.Protection scope of the present invention is still defined by claim, including on this basis
Done replacement, deformation etc..
Claims (8)
1. circulating fluidized bed boiler water-cooling wall superconduction shoe, described device include emulsion zone water screen tube（1）, it is laterally wear-resisting
Deflector group（2）, vertical wear-resisting deflector group（3）, water-cooling wall connecting plate（4）, the laterally wear-resisting deflector group（2）With it is vertical
Wear-resisting deflector group（3）Layering is arranged on four wall of burner hearth, laterally wear-resisting deflector group（2）With vertical wear-resisting deflector group（3）
Different netted grids are constituted on water-cooling wall wall, it is characterised in that：
The emulsion zone water screen tube（1）It is vertically mounted on horizontal deflector group（2）Groove arc at；
The vertical wear-resisting deflector group（3）It is vertically set on horizontal wear-resisting deflector group（2）On, it is parallel with water screen tube；Institute
State water-cooling wall connecting plate（4）It is arranged between two neighboring water screen tube, it is parallel with water screen tube；
Described device also includes upper air vent（5）, the upper air vent（5）It is arranged on the water of water-cooling wall superconduction shoe
Cold wall wall top.
2. circulating fluidized bed boiler water-cooling wall superconduction shoe according to claim 1, it is characterised in that：Described device
Also include wear-resistant temperature-resistant shield watt（6）, the wear-resistant temperature-resistant shield watt（6）It is arranged on most last layer laterally wear-resisting deflector group（2）With
Vertical wear-resisting deflector group（3）Infall, it is corresponding with water screen tube external diameter, it is buckled on water screen tube.
3. circulating fluidized bed boiler water-cooling wall superconduction shoe according to claim 1, it is characterised in that it is described laterally
Wear-resisting deflector group（2）By polylith, laterally wear-resisting deflector head and the tail level superposition is constituted；
The interposition of the laterally wear-resisting deflector side is equipped with 1/2nd groove arcs（2-2）, two ends have one it is first
End a quarter groove arc（2-1）With a tail end a quarter groove arc（2-3）；
The groove arc of the laterally wear-resisting deflector is corresponding with water screen tube external diameter.
4. circulating fluidized bed boiler water-cooling wall superconduction shoe according to claim 1, it is characterised in that：It is described vertical
Wear-resisting deflector group（3）It is made up of the vertical wear-resisting deflector of polylith；
The vertical wear-resisting deflector upper and lower ends are the inclined plane that can be mutually butted, and two neighboring vertical wear-resisting deflector inclines
The interlaced setting in inclined-plane, multiple vertical wear-resisting deflectors are vertically sequentially overlapped, and side section is welded in water-cooling wall connecting plate（4）On.
5. circulating fluidized bed boiler water-cooling wall superconduction shoe according to claim 1, it is characterised in that：The top
Exhaust outlet（5）Both sides are per adjacent two vertical wear-resisting deflector groups（3）Between arrange 2 water screen tubes.
6. circulating fluidized bed boiler water-cooling wall superconduction shoe according to claim 1, it is characterised in that：It is two neighboring
The laterally wear-resisting deflector group（2）Between at intervals of 600mm.
7. circulating fluidized bed boiler water-cooling wall superconduction shoe according to claim 1, it is characterised in that：It is described horizontal
Wear-resisting deflector group（2）With vertical wear-resisting deflector group（3）It is molded by multi-element alloy casting, the main component of the alloy is
W5CrNi10MoMn3, alloy the upper limit temperature of heat tolerance reach 1250 °C, tensile strength >=560MPa.
8. a kind of CFBB, it is characterised in that the boiler is included in claim 1-7 described in any claim
Circulating fluidized bed boiler water-cooling wall superconduction shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123592.1A CN106545847A (en) | 2016-12-08 | 2016-12-08 | Circulating fluidized bed boiler water-cooling wall superconduction shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611123592.1A CN106545847A (en) | 2016-12-08 | 2016-12-08 | Circulating fluidized bed boiler water-cooling wall superconduction shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106545847A true CN106545847A (en) | 2017-03-29 |
Family
ID=58396877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611123592.1A Pending CN106545847A (en) | 2016-12-08 | 2016-12-08 | Circulating fluidized bed boiler water-cooling wall superconduction shoe |
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| CN (1) | CN106545847A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156539A (en) * | 2020-03-06 | 2020-05-15 | 郑州胜今耐磨科技有限公司 | Metal plate for eliminating vortex of boiler |
| CN113719819A (en) * | 2021-09-09 | 2021-11-30 | 北京华科同和科技有限公司 | Manhole door seal box and tower supercritical boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB368999A (en) * | 1931-03-21 | 1932-03-17 | Babcock & Wilcox Co | Improvements in water tube furnace walls of steam generators |
| CN202902263U (en) * | 2012-11-09 | 2013-04-24 | 瓮福（集团）有限责任公司 | Wear resisting device for walls of water cooling pipes of circulating fluidized bed boiler |
| CN203162936U (en) * | 2013-04-10 | 2013-08-28 | 郑州鑫地热能实业有限公司 | Circulating fluidized bed and wear-resistant device for water wall tubes thereof |
| CN204922959U (en) * | 2015-09-14 | 2015-12-30 | 郑州三众耐磨技术有限公司 | Whole abrasionproof structure of CFB boiler water wall |
| CN205782879U (en) * | 2016-06-16 | 2016-12-07 | 王玉壁 | Multidimensional water curtain type metal abrasionproof component |
-
2016
- 2016-12-08 CN CN201611123592.1A patent/CN106545847A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB368999A (en) * | 1931-03-21 | 1932-03-17 | Babcock & Wilcox Co | Improvements in water tube furnace walls of steam generators |
| CN202902263U (en) * | 2012-11-09 | 2013-04-24 | 瓮福（集团）有限责任公司 | Wear resisting device for walls of water cooling pipes of circulating fluidized bed boiler |
| CN203162936U (en) * | 2013-04-10 | 2013-08-28 | 郑州鑫地热能实业有限公司 | Circulating fluidized bed and wear-resistant device for water wall tubes thereof |
| CN204922959U (en) * | 2015-09-14 | 2015-12-30 | 郑州三众耐磨技术有限公司 | Whole abrasionproof structure of CFB boiler water wall |
| CN205782879U (en) * | 2016-06-16 | 2016-12-07 | 王玉壁 | Multidimensional water curtain type metal abrasionproof component |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156539A (en) * | 2020-03-06 | 2020-05-15 | 郑州胜今耐磨科技有限公司 | Metal plate for eliminating vortex of boiler |
| CN113719819A (en) * | 2021-09-09 | 2021-11-30 | 北京华科同和科技有限公司 | Manhole door seal box and tower supercritical boiler |
| CN113719819B (en) * | 2021-09-09 | 2024-03-26 | 北京华科同和科技有限公司 | Manhole door sealing box and tower type supercritical boiler |
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Application publication date: 20170329 |