CN2718411Y - Water cooled wall with wear prevention material and pipe structure - Google Patents

Water cooled wall with wear prevention material and pipe structure Download PDF

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Publication number
CN2718411Y
CN2718411Y CN 200420077720 CN200420077720U CN2718411Y CN 2718411 Y CN2718411 Y CN 2718411Y CN 200420077720 CN200420077720 CN 200420077720 CN 200420077720 U CN200420077720 U CN 200420077720U CN 2718411 Y CN2718411 Y CN 2718411Y
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CN
China
Prior art keywords
water
cooling wall
pipeline section
water cooled
cooled wall
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Expired - Lifetime
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CN 200420077720
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Chinese (zh)
Inventor
吕清刚
包绍麟
那永洁
孙运凯
贺军
高鸣
贠小银
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Institute of Engineering Thermophysics of CAS
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Institute of Engineering Thermophysics of CAS
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Priority to CN 200420077720 priority Critical patent/CN2718411Y/en
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Publication of CN2718411Y publication Critical patent/CN2718411Y/en
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Abstract

The utility model relates to a water cooled wall with a wear prevention material and tube structure, comprising a water cooled wall tube and intertube fins. The middle section of the water cooled wall tube is an outward oblique water cooled wall tube section, which inclines toward the oblique upper part of the outside of a furnace wall. The outward oblique water cooled wall tube section and the vertical plane form an included angle alpha, and the alpha =15-35 degrees . The water cooled wall tube under the outward oblique water cooled wall tube section is a vertical water cooled wall tube section, and the water cooled wall tube under the vertical water cooled wall tube section is an inward oblique water cooled wall tube section. The inward oblique water cooled wall tube section and the vertical plane form the included angle beta, and the beta =10-18 degrees . The water cooled wall with the wear prevention material and pipe structure overcomes the defects of the wear prevention structure of the prior art. The water cooled wall with the wear prevention material and pipe structure is convenient to lay the wear resistance material and can greatly lessen the abrasion of the water cooled wall of the lower part of the hearth.

Description

A kind of water-cooling wall with wear prevention material and pipe structure
Invention field
The utility model relates to the water-cooling wall of CFBB, particularly relates to a kind of water-cooling wall with wear prevention material and pipe structure.
Technical field
The burner hearth of CFBB is surrounded by fin panel casing usually and forms, and by Fig. 1-a and Fig. 1-b as can be known, described fin panel casing is made up of fin 11 between water screen tube 1 and pipe.Lower furnace portion is the emulsion zone of bed, the granule density height, and fluidisation is violent; The particle that is fluidized not only has motion upwards, also has a large amount of particles to move downward near water-cooling wall.Therefore, need lay high-abrasive material usually on the water-cooling wall of lower furnace portion, prevent the water-cooling wall wearing and tearing.But this nothing allows directly lays high-abrasive material on the vertical water-cooling wall of pipe, and its upper bound place forms outstanding end face (13 places among Fig. 1-b); The particle that the existence of this end face can cause to fall and break produces serious wearing and tearing near the water-cooling wall it.This wearing and tearing cause the boiler maintenance number of times to increase, and the water screen tube maintenance is frequent, have reduced the availability of boiler.In addition, burner hearth front-back wall water-cooling wall is usually designed to the inclined-plane that shrinks in stove, and this inclined-plane can cause eddy current in downward grain flow, and warp gets on, and causes the vertical water-cooling wall of turning angle (A place among Fig. 2) top to be worn.
U.S. patent of invention US309563 has proposed a kind of band and has allowed the water-cooling wall of tubular construction, referring to Fig. 2, its principal character is: the interlude of water-cooling wall is bent to the oblique below in the outside, furnace wall, itself and perpendicular are had angle, and lay wear-resistant material layer on the water-cooling wall under the bending place.Though this structure has been eliminated the wear problem that the wear-resistant material layer end face brings, the vertical water-cooling wall that is close to top, front-back wall water-cooling wall contraction inclined-plane still can be subjected to by heavy wear owing to do not lay high-abrasive material.In addition, because the angle of its water-cooling wall and perpendicular is normally certain in actual use, therefore lower furnace portion scuff-resistant coating height is certain also.Along with the amplification of boiler capacity, this height can not satisfy abrasionproof needs in the stove, and its top water-cooling wall still can be worn.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of above-mentioned circulating fluidized bed boiler water-cooling wall, and a kind of water-cooling wall of novel band wear prevention material and pipe structure is provided, and is convenient to lay high-abrasive material, alleviates the wearing and tearing of lower furnace portion water-cooling wall.
The technical solution of the utility model is:
The water-cooling wall of band wear prevention material and pipe structure provided by the invention, comprise fin 11 between water screen tube 1 and pipe, the water-cooling wall part is covered with wear-resistant material layer 12, the interlude of described water screen tube 1 is outside oblique water-cooling wall pipeline section BC, should tilt to the oblique below in the outside, furnace wall by outwards oblique water-cooling wall pipeline section BC, become the α angle with perpendicular, it is characterized in that, water screen tube under the described outwards oblique water-cooling wall pipeline section BC is vertical water-cooling wall pipeline section CD, water screen tube under the described vertical water-cooling wall pipeline section CD is inside oblique water-cooling wall pipeline section DE, and described inwardly oblique water-cooling wall pipeline section DE becomes the β angle with perpendicular; All be covered with wear-resistant material layer 12 on the fin 11 between described outwards oblique water-cooling wall pipeline section BC, vertical water-cooling wall pipeline section CD, inside oblique water-cooling wall pipeline section DE and pipe.
The described outwards height h1=130-300mm of oblique water-cooling wall pipeline section BC; The height h3=1000-1800mm of described vertical water-cooling wall pipeline section CD.
The thickness h 2=50-90mm of described wear-resistant material layer 12.
Described α=15-35 °; Described β=10-18 °.
Be coated with the carbide alloy scuff-resistant coating on the 300-400mm water-cooling wall section FG up and down of described wear-resistant material layer 12 tops.
The band abrasionproof that the utility model provides allows the abrasionproof principle of water-cooling wall of pipe be:
Water screen tube 1 is provided with wear prevention material and pipe structure, water screen tube 1 adopts twice bending of turning back, turn back for the first time and utilize water-cooling wall outwards allow the space of pipe, hold the thickness of high-abrasive material, thus the end face that makes its top and water-cooling wall junction can not exist the aggravation water-cooling wall to wear and tear; Turn back for the second time and realize the contraction of water-cooling wall in stove.The angle of wherein turning back for the second time can change according to the burner hearth needs, with the scuff-resistant coating height that obtains to be fit to.Simultaneously, this structure has improved lower furnace portion scuff-resistant coating height than the structure that U.S. patent of invention US309563 provides, and makes the vertical water-cooling wall that does not lay high-abrasive material shrink the inclined-plane away from water-cooling wall.In addition can be with water-cooling wall bottom pad design vertical section middle and upper part between turning back for the first time and turning back for the second time, be hidden in high-abrasive material after, avoid the wearing and tearing that cause by pad; The pad that has also guaranteed this pad top simultaneously can be arranged De Genggao, and farther from emulsion zone, the wearing and tearing that may bring are littler.
Description of drawings
Fig. 1-a and Fig. 1-b for not with abrasionproof allow manage the structural representation of fin panel casing;
Fig. 2 is the structural representation of U.S. patent of invention US309563;
Fig. 3 allows the structural representation of water-cooling wall of pipe for the utility model abrasionproof;
Fig. 4 is that the part band abrasionproof of first specific embodiment allows the water-cooling wall schematic diagram of pipe;
Fig. 5 is that the part band abrasionproof of second specific embodiment allows the water-cooling wall schematic diagram of pipe.
Fig. 6 is that the part band abrasionproof of the 3rd specific embodiment allows the water-cooling wall schematic diagram of pipe.
Wherein: water screen tube 1 wear-resistant material layer 12
Wear-resistant material layer end face 13 water-cooling wall bottom pads 14
The outside oblique vertical water-cooling wall pipeline section of water-cooling wall pipeline section BC CD
Inwardly oblique water-cooling wall pipeline section DE carbide alloy spraying pipeline section FG
Height h1 angle [alpha], β, the γ of outwards oblique water-cooling wall pipeline section BC
Vertically the height h3 water-cooling wall of water-cooling wall pipeline section CD inwardly shrinks the A of place that turns back
Water-cooling wall pipeline section BC goes up the distance h 5 on plane, fin 11 place between wearing layer 12 outer surfaces and pipe
The specific embodiment
As shown in Figure 3, the water-cooling wall of band wear prevention material and pipe structure of the present utility model, comprise fin 11 between water screen tube 1 and pipe, the water-cooling wall part is covered with wear-resistant material layer 12, the interlude of described water screen tube 11 is outside oblique water-cooling wall pipeline section BC, should tilt to the oblique below in the outside, furnace wall by outwards oblique water-cooling wall pipeline section BC, and become the α angle, α=15-35 ° with perpendicular; Water screen tube under the described outwards oblique water-cooling wall pipeline section BC is vertical water-cooling wall pipeline section CD, water screen tube under the described vertical water-cooling wall pipeline section CD is inside oblique water-cooling wall pipeline section DE, and described inwardly oblique water-cooling wall pipeline section DE becomes the β angle with perpendicular.All be covered with wear-resistant material layer 12 on the fin 11 between described outwards oblique water-cooling wall pipeline section BC, vertical water-cooling wall pipeline section CD, inside oblique water-cooling wall pipeline section DE and pipe.
The described outwards height h1 of oblique water-cooling wall pipeline section BC is 130-300mm; The height h3 of described vertical water-cooling wall pipeline section CD is 1000-1800mm.
The β angle can be determined according to lower furnace portion scuff-resistant coating design total height, in 10-18 ° of scope; The thickness h 2 of wear-resistant material layer 12 is 50-90mm.
Water-cooling wall is positioned at the middle and upper part of vertical water-cooling wall section CD at the pad 14 of lower furnace portion.
Be coated with the carbide alloy scuff-resistant coating on the water-cooling wall section FG of described wear-resistant material layer 12 tops height overall 300-400mm up and down.
Embodiment 1
The water-cooling wall of the band wear prevention material and pipe structure of present embodiment comprises fin 11 between water screen tube 1 and pipe, and the caliber of water screen tube 1 is 51mm;
The interlude of described water screen tube 1 is outwards oblique water-cooling wall pipeline section BC (height 300mm), should tilt to the oblique below in the outside, furnace wall by outwards oblique water-cooling wall pipeline section BC, and become the α angle with perpendicular, α=15 °, water screen tube under the described outside oblique water-cooling wall pipeline section BC is vertical water-cooling wall pipeline section CD (height 1000mm), water screen tube under the described vertical water-cooling wall pipeline section CD is inside oblique water-cooling wall pipeline section DE, described inwardly oblique water-cooling wall pipeline section DE becomes the β angle with perpendicular, β=18 °;
All be covered with wear-resistant material layer 12 on the fin 11 between described outwards oblique water-cooling wall pipeline section BC, vertical water-cooling wall pipeline section CD, inside oblique water-cooling wall pipeline section DE and pipe, its high-abrasive material is a wear-resistant castable, and the thickness of wear-resistant material layer 12 is 80mm.
The C place, lower end of described outwards oblique water-cooling wall pipeline section BC is vertical water-cooling wall pipeline section CD downwards, and vertically the D place of water-cooled tube wall section CD is downwards inside oblique water-cooling wall pipeline section DE, extends to air distribution plate, forms the lower furnace portion structure of inwardly shrinking.
From the wear-resistant material layer that a B begins to lay, its outer surface and select that fin 11 is on same perpendicular between the VERTICAL TUBE of B top, its transition is smooth smooth.Like this, high-abrasive material is inserted the space that allows pipe form, and has eliminated the end face of high-abrasive material upper end.
Embodiment 2
The water-cooling wall of the band wear prevention material and pipe structure of present embodiment comprises fin 11 between water screen tube 1 and pipe, and the caliber of water screen tube 1 is 60mm.
The interlude of described water screen tube 1 is outside oblique water-cooling wall pipeline section BC, it highly is 130mm, should tilt to the oblique below in the outside, furnace wall by outwards oblique water-cooling wall pipeline section BC, and become the α angle with perpendicular, α=35 °, water screen tube under the described outwards oblique water-cooling wall pipeline section BC is vertical water-cooling wall pipeline section CD, it highly is 1800mm, water screen tube under the described vertical water-cooling wall pipeline section CD is inside oblique water-cooling wall pipeline section DE, described inwardly oblique water-cooling wall pipeline section DE becomes the β angle with perpendicular, β=10 °;
All be covered with wear-resistant material layer 12 on the fin between described outwards oblique water-cooling wall pipeline section BC, vertical water-cooling wall pipeline section CD, inside oblique water-cooling wall pipeline section DE and pipe, high-abrasive material is a wear-resistant castable, and the thickness of wear-resistant material layer 12 is 90mm.
The C place, lower end of described outwards oblique water-cooling wall pipeline section BC is vertical water-cooling wall pipeline section CD downwards, and vertically the D place of water-cooled tube wall section CD is downwards inside oblique water-cooling wall pipeline section DE, extends to air distribution plate, forms the lower furnace portion structure of inwardly shrinking.
The wear-resistant material layer top is a sloped top face, and this sloped top face becomes the γ angle with outwards oblique water-cooling wall pipeline section BC, γ=100 °; Wear-resistant material layer 12 outer surfaces on the outwards oblique water-cooling wall pipeline section BC, and B select between the pipe of top fin 11 on same perpendicular, but continuous; Or more outer than plane, 11 place of fin between pipe, two planes are at a distance of h5,0＜h5＜30mm.The point B water-cooling wall section FG of height overall 300-400mm up and down goes up coated with hard alloy scuff-resistant coating, and its latter half overlaps with high-abrasive material.The height h4 of its water-cooling wall section FG sets as required.The advantage of this laying structure is that the space of arranging pin, high-abrasive material difficult drop-off are also arranged in the high-abrasive material top; And the high-abrasive material end face tilts in stove, can with the grain flow that moves downward to the wear control of top water-cooling wall in very little scope.Present embodiment γ=100 °, h4 is 300mm, h5 is 30mm.
Embodiment 3
The water-cooling wall of the band wear prevention material and pipe structure of present embodiment comprises fin 11 between water screen tube 1 and pipe, and the caliber of water screen tube 1 is 51mm.
The interlude of described water screen tube 1 is outside oblique water-cooling wall pipeline section BC, it highly is 190mm, should tilt to the oblique below in the outside, furnace wall by outwards oblique water-cooling wall pipeline section BC, and become the α angle with perpendicular, α=15 °, water screen tube under the described outwards oblique water-cooling wall pipeline section BC is vertical water-cooling wall pipeline section CD, it highly is 1200mm, water screen tube under the described vertical water-cooling wall pipeline section CD is inside oblique water-cooling wall pipeline section DE, described inwardly oblique water-cooling wall pipeline section DE becomes the β angle with perpendicular, β=15 °;
All be covered with wear-resistant material layer 12 on the fin between described outwards oblique water-cooling wall pipeline section BC, vertical water-cooling wall pipeline section CD, inside oblique water-cooling wall pipeline section DE and pipe, high-abrasive material is a corrosive-proof plastic material, and the thickness of wear-resistant material layer 12 is 50mm.
The C place, lower end of described outwards oblique water-cooling wall pipeline section BC is vertical water-cooling wall pipeline section CD downwards, and vertically the D place of water-cooled tube wall section CD is downwards inside oblique water-cooling wall pipeline section DE, extends to air distribution plate, forms the lower furnace portion structure of inwardly shrinking.
The wear-resistant material layer top is a sloped top face, and this sloped top face becomes the γ angle with outwards oblique water-cooling wall pipeline section BC, γ=120 °; Wear-resistant material layer outer surface on the outwards oblique water-cooling wall pipeline section BC and B selects between the pipe of top fin 11 on same perpendicular, but continuous.The point B water-cooling wall section FG of height overall 400mm up and down goes up coated with hard alloy scuff-resistant coating, and its latter half overlaps with high-abrasive material.

Claims (4)

1, a kind of water-cooling wall with wear prevention material and pipe structure, comprise fin (11) between water screen tube (1) and pipe, the interlude of described water screen tube (1) is outside oblique water-cooling wall pipeline section (BC), should tilt to the oblique below in the outside, furnace wall by outwards oblique water-cooling wall pipeline section (BC), and become the α angle with perpendicular, it is characterized in that, water screen tube under the described outwards oblique water-cooling wall pipeline section (BC) is a vertical water-cooling wall pipeline section (CD), water screen tube under the described vertical water-cooling wall pipeline section (CD) is inside oblique water-cooling wall pipeline section (DE), and described inwardly oblique water-cooling wall pipeline section (DE) becomes the β angle with perpendicular; All be covered with wear-resistant material layer (12) on the fin (11) between described outwards oblique water-cooling wall pipeline section BC, vertical water-cooling wall pipeline section CD, inside oblique water-cooling wall pipeline section DE and pipe.
2, by the water-cooling wall of the described band wear prevention material and pipe structure of claim 1, it is characterized in that described (α)=15-35 °.
3, by the water-cooling wall of the described band wear prevention material and pipe structure of claim 1, it is characterized in that described (β)=10-18 °.
4, by the water-cooling wall of the described band wear prevention material and pipe structure of claim 1, it is characterized in that the described outwards height h1=130-300mm of oblique water-cooling wall pipeline section (BC); The height h3=1000-1800mm of described vertical water-cooling wall pipeline section (CD).
CN 200420077720 2004-07-07 2004-07-07 Water cooled wall with wear prevention material and pipe structure Expired - Lifetime CN2718411Y (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100575782C (en) * 2007-02-07 2009-12-30 中国科学院工程热物理研究所 The boiler hearth of circulating fluidized bed of band heating screen
CN101382282B (en) * 2007-09-04 2011-11-23 江苏太湖锅炉股份有限公司 Improved pipe structure for preventing nonhomogeneous degradation of flue gas
CN103553007A (en) * 2013-10-16 2014-02-05 欧萨斯能源环境设备(南京)有限公司 Water-cooled wall of ammonia oxidation furnace
CN105444161A (en) * 2016-01-26 2016-03-30 哈尔滨红光锅炉总厂有限责任公司 Environmentally-friendly energy-saving type circulating fluidized bed boiler
EP3589888B1 (en) 2017-03-03 2021-04-07 Sumitomo SHI FW Energia Oy Watertube panel portion and a method of manufacturing a watertube panel portion in a fluidized bed reactor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100575782C (en) * 2007-02-07 2009-12-30 中国科学院工程热物理研究所 The boiler hearth of circulating fluidized bed of band heating screen
CN101382282B (en) * 2007-09-04 2011-11-23 江苏太湖锅炉股份有限公司 Improved pipe structure for preventing nonhomogeneous degradation of flue gas
CN103553007A (en) * 2013-10-16 2014-02-05 欧萨斯能源环境设备(南京)有限公司 Water-cooled wall of ammonia oxidation furnace
CN105444161A (en) * 2016-01-26 2016-03-30 哈尔滨红光锅炉总厂有限责任公司 Environmentally-friendly energy-saving type circulating fluidized bed boiler
CN105444161B (en) * 2016-01-26 2017-07-07 哈尔滨红光锅炉总厂有限责任公司 Environment-friendly and energy-efficient CFBB
EP3589888B1 (en) 2017-03-03 2021-04-07 Sumitomo SHI FW Energia Oy Watertube panel portion and a method of manufacturing a watertube panel portion in a fluidized bed reactor

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C14 Grant of patent or utility model
GR01 Patent grant
C53 Correction of patent for invention or patent application
CB03 Change of inventor or designer information

Inventor after: Lv Qinggang

Inventor after: Bao Shaolin

Inventor after: the ever clean

Inventor after: Sun Yunkai

Inventor after: He Jun

Inventor after: Gao Ming

Inventor before: Lv Qinggang

Inventor before: Bao Shaolin

Inventor before: Sun Yunkai

Inventor before: Na Yongjie

Inventor before: He Jun

Inventor before: Gao Ming

Inventor before: Yun Xiao Yin

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: LV QINGGANG; BAO SHAOLIN; NA YONGJIE; SUN YUNKAI; HE JUN; GAO MING; SMALLSILVER TO: LV QINGGANG; BAO SHAOLIN; NA YONGJIE; SUN YUNKAI; HE JUN; GAO MING

C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20140707

Granted publication date: 20050817