CN104791780A - Tube wall wearproof device of circulating fluidized bedboiler water wall dense phase area - Google Patents
Tube wall wearproof device of circulating fluidized bedboiler water wall dense phase area Download PDFInfo
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- CN104791780A CN104791780A CN201510245992.9A CN201510245992A CN104791780A CN 104791780 A CN104791780 A CN 104791780A CN 201510245992 A CN201510245992 A CN 201510245992A CN 104791780 A CN104791780 A CN 104791780A
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- Prior art keywords
- wall
- tube
- circulating fluidized
- water
- fin
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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
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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
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
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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 discloses a tube wall wearproof device of a circulating fluidized bedboiler water wall dense phase area, and relates to a tube wall wearproof device. The tube wall wearproof device aims to solve that the problems that the tube wall of the circulating fluidized bedboiler water wall dense phase area is easy to abrade, the boiler operation safety is poor and the operation cost is high. The tube wall wearproof device comprises multiple water wall tubes and multiple rows of fin groups, wherein the outer wall of each water wall tube is fixedly connected with multiple rows of fin groups along the axial direction, and each fin group is formed by multiple fins arranged along the axial direction of the corresponding water wall tube, and the fins on the two adjacent rows of fin groups are arranged in a staggered manner. Each fin comprises a rectangular sheet body and a triangular sheet body, the rectangular sheet body and the triangular sheet body are positioned in a same plane, and the wider edge of the triangular sheet body and the edge of the triangular sheet body are fixedly connected into a whole, and the long side of the triangular sheet body is fixedly connected at the outer wall of the corresponding water wall tube. The tube wall wearproof device is used in the circulating fluidized bedboiler water wall dense phase area.
Description
Technical field
The present invention is specifically related to a kind of tube wall shoe of circulating fluidized bed boiler water-cooling wall emulsion zone.
Background technology
Technology of Circulating Fluidized Bed Boiler is the high-efficiency low-pollution clean burning branch art developed rapidly in recent ten years.This technology has obtained business application widely in fields such as station boiler, Industrial Boiler and offal treatment utilizations in the world, in CFBB more than transport disengaging height (TDH), particle concentration in air-flow is lower, but is more evenly called dilute-phase zone; Below transport disengaging height, granule density is comparatively large, and reduces gradually along short transverse concentration, and this part region is referred to as emulsion zone.
Since the eighties in 20th century, CFBB obtains swift and violent development in China, and the power plant that China is a lot of and heat supply factory all use this kind of type of furnace.CFBB has economize energy, stable, fuel availability is high and be applicable to the features such as inferior fuel.Boiler heating surface wearing and tearing are that the waterwall tube cracking of power plant ubiquitous serious problems, particularly CFBB is particularly outstanding always, its wearing and tearing cause water-cooling wall to be revealed Probability is coal-powder boiler about 5 ~ 6 times.Wherein the transducer wall ' s abrasion of lower furnace portion wall with refractory lining, refracto and water screen tube transitional region transducer wall ' s abrasion, burner hearth four corner regions and the wearing and tearing of irregular area tube wall particularly serious.The wearing and tearing of water-cooling wall can cause the thinning even booster of the pipe of water-cooling wall, directly affect the safe operation of boiler.The detailed process of water screen tube wearing and tearing is the descending material flow that there is high concentration near water-cooling wall water-cooling wall, and more down its speed fallen and larger water-cooling wall emulsion zone of density of the bed of material.The material declined has certain souring to tube wall, but due to its direction of motion parallel with water screen tube, so to the wearing and tearing of this region water-cooling wall and not quite; When material by wall with refractory lining, refracto along stop and after turning to, the air-flow risen by emulsion zone in burner hearth and material hold up and form eddy current, thus change the direction of motion of material, that increase particle with angle of attack that is tube wall, and then the wearing and tearing added tube wall, and the concentration increase of material also accelerates the wearing and tearing of tube wall.In addition, manhole and the measured hole place horizontal plane form also owing to allowing tubular construction change tube wall, thus cause the formation of eddy current, change the direction of motion of material, increase the weight of the wearing and tearing to tube wall.
Summary of the invention
The invention provides a kind of tube wall shoe of circulating fluidized bed boiler water-cooling wall emulsion zone, easy to wear in order to solve at the tube wall of circulating fluidized bed boiler water-cooling wall emulsion zone, the problem that the poor stability of boiler operatiopn, operating cost are high.
The present invention solves the problems of the technologies described above the technical scheme taked to be:
A kind of tube wall shoe of circulating fluidized bed boiler water-cooling wall emulsion zone, it comprises multiple water screen tube and multiple row fins group, the outer wall of each water screen tube is fixedly connected with multiple row fins group along its axial direction, often row fins group to be arranged in order along water screen tube axial direction by multiple fin and to be formed, and the fin in adjacent two row fins group is crisscross arranged.
Fin comprises rectangle lamellar body and triangle lamellar body, described rectangle lamellar body and triangle lamellar body are in same plane, a broadside of described rectangle lamellar body is fixedly connected with a limit of triangle lamellar body and is made as one, and a long limit of described rectangle lamellar body is fixedly connected on the outer wall of the water screen tube of its correspondence.
Horizontal sextant angle between adjacent two row fins group is α, and the span of described α is 30 ° ~ 60 °.
The columns of described multiple row fins group is 3 ~ 6.
Fin is the lamellar body that 1Cr20Ni14Si2 or 0Cr25Ni20 makes.
Beneficial effect of the present invention:
1, scientific structure design of the present invention is reasonable, the outer wall by water screen tube each in wall with refractory lining, refracto is connected with multiple row fins group and effectively can stops that the eddy current that the air-flow that rises in wall with refractory lining, refracto and material hold up and formed directly impacts water screen tube.
2, the fin in the present invention in adjacent two row fins group is crisscross arranged the operator guards making water screen tube form continuous effective outward; the angle of inclination of water screen tube outer wall is fixed on by adjustment fin; make the present invention can realize changing the direction of motion of eddy current; the eddy current of wall with refractory lining, refracto position produces and seamlessly transits, thus effectively reduces the wearing and tearing to water-cooling wall tube wall.
3, the fin in the present invention can be chosen unlike material according to the temperature of residing environment and make, and by arranging the angle between fin and water screen tube axial direction, makes the present invention in the burner hearth having turning, realize the effect of protecting water screen tube.
4, the present invention is compared with prior art cheap for manufacturing cost, saves the manufacturing expense of more than 50%, and the present invention manufactures simply, security row is high, and avoid repeatedly changing the water screen tube worn and torn, the present invention is easy to use, applied widely.
Accompanying drawing explanation
Fig. 1 is the structural representation (in figure, filled arrows represents the descending with the direction of rising of material flow, and figure hollow core arrow represents the flow direction of eddy current) of the transducer wall ' s abrasion of existing circulating fluidized bed boiler water-cooling wall emulsion zone;
Fig. 2 is the outline drawing of circulating fluidized bed boiler water-cooling wall emulsion zone;
Fig. 3 is main TV structure schematic diagram of the present invention;
Fig. 4 is the plan structure profile of Fig. 2;
Fig. 5 is the main TV structure schematic diagram of fin 3;
Fig. 6 is the perspective view in the present invention when fin 3 is parallel with the axial direction of water screen tube 1;
Fig. 7 is the perspective view in the present invention when fin 3 has angle with the axial direction of water screen tube 1.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7 illustrate present embodiment, in present embodiment, it comprises multiple water screen tube 1 and multiple row fins group 2, the outer wall of each water screen tube 1 is fixedly connected with multiple row fins group 2 along its axial direction, often row fins group 2 to be arranged in order along water screen tube 1 axial direction by multiple fin 3 and to be formed, and the fin 3 in adjacent two row fins group 2 is crisscross arranged.
In present embodiment, often multiple fin 3 spaced set or head and the tail connect successively in row fins group 2.The detailed process of wearing and tearing at existing water screen tube is the descending material flow 4 that there is high concentration near water-cooling wall, and more down its speed fallen and density larger (water-cooling wall emulsion zone) of the bed of material.Descending material flow 4 pairs of tube walls have certain souring, but due to its direction of motion parallel with water screen tube, so little to the wearing and tearing of this regional water cold wall pipe 1; When material by wall with refractory lining, refracto along 5 stop and after turning to, the air-flow risen by emulsion zone in burner hearth and material hold up and form eddy current 6, thus change the direction of motion of material, that increase particle with angle of attack that is water screen tube 1, and then the wear area added water screen tube 1, and the expansion of the wear surface 7 of water screen tube 1 is also accelerated in the concentration increase of material.
The present invention is applied in lower furnace portion wall with refractory lining, refracto 8 and the shoe in water screen tube transitional region, in the present invention, the unilateral of fin 3 is set to the state parallel with water screen tube 1 axial direction, and also fin 3 unilateral can be set to is the angle of 30 ° ~ 60 ° with water screen tube 1 axial direction.Horizontal range in the present invention between adjacent two row fins group 2 is 30 ~ 50mm.
Detailed description of the invention two: composition graphs 3, Fig. 4 and Fig. 5 illustrate present embodiment, in present embodiment, fin 3 comprises rectangle lamellar body 3-1 and triangle lamellar body 3-2, described rectangle lamellar body 3-1 and triangle lamellar body 3-2 is in same plane, a broadside of described rectangle lamellar body 3-1 is fixedly connected with a limit of triangle lamellar body 3-2 and is made as one, and a long limit of described rectangle lamellar body 3-1 is fixedly connected on the outer wall of water screen tube 1 of its correspondence.In present embodiment, the long edge lengths of rectangle lamellar body 3-1 is 100 ~ 150mm, and width edge length is 20 ~ 40mm.Present embodiment intermediate cam shape lamellar body 3-2 is the triangle lamellar body of right angled triangle lamellar body, isosceles triangle lamellar body or other shape.In present embodiment the structure of NM component and detailed description of the invention one and annexation identical.
Detailed description of the invention three: composition graphs 4 illustrates present embodiment, the horizontal sextant angle in present embodiment between adjacent two row fins group 2 is α, and the span of described α is 30 ° ~ 60 °.In present embodiment the structure of NM component and detailed description of the invention one or two and annexation identical.
Detailed description of the invention four: composition graphs 3, Fig. 4 and Fig. 5 illustrate present embodiment, the columns of the fins group of multiple row described in present embodiment 2 is 3 ~ 6.Select concrete columns according to specific works situation, in present embodiment the structure of NM component and detailed description of the invention three and annexation identical.
Detailed description of the invention five: composition graphs 3, Fig. 4 and Fig. 5 illustrate present embodiment, the lamellar body that in present embodiment, fin 3 is made for 1Cr20Ni14Si2 or 0Cr25Ni20.In present embodiment the structure of NM component and detailed description of the invention four and annexation identical.
Claims (5)
1. the tube wall shoe of a circulating fluidized bed boiler water-cooling wall emulsion zone, it is characterized in that: it comprises multiple water screen tube (1) and multiple row fins group (2), the outer wall of each water screen tube (1) is fixedly connected with multiple row fins group (2) along its axial direction, often row fins group (2) to be arranged in order along water screen tube (1) axial direction by multiple fin (3) and to be formed, and the fin (3) in adjacent two row fins group (2) is crisscross arranged.
2. the tube wall shoe of a kind of circulating fluidized bed boiler water-cooling wall emulsion zone according to claim 1, it is characterized in that: fin (3) comprises rectangle lamellar body (3-1) and triangle lamellar body (3-2), described rectangle lamellar body (3-1) and triangle lamellar body (3-2) are in same plane, a broadside of described rectangle lamellar body (3-1) is fixedly connected with a limit of triangle lamellar body (3-2) and is made as one, and a long limit of described rectangle lamellar body (3-1) is fixedly connected on the outer wall of water screen tube (1) of its correspondence.
3. a kind of tube wall shoe of circulating fluidized bed boiler water-cooling wall emulsion zone according to claim 1 or 2, it is characterized in that: the horizontal sextant angle between adjacent two row fins group (2) is α, the span of described α is 30 ° ~ 60 °.
4. the tube wall shoe of a kind of circulating fluidized bed boiler water-cooling wall emulsion zone according to claim 3, is characterized in that: the columns of described multiple row fins group (2) is 3 ~ 6.
5. the tube wall shoe of a kind of circulating fluidized bed boiler water-cooling wall emulsion zone according to claim 4, is characterized in that: the lamellar body that fin (3) is made for 1Cr20Ni14Si2 or 0Cr25Ni20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510245992.9A CN104791780A (en) | 2015-05-14 | 2015-05-14 | Tube wall wearproof device of circulating fluidized bedboiler water wall dense phase area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510245992.9A CN104791780A (en) | 2015-05-14 | 2015-05-14 | Tube wall wearproof device of circulating fluidized bedboiler water wall dense phase area |
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| CN104791780A true CN104791780A (en) | 2015-07-22 |
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| CN201510245992.9A Pending CN104791780A (en) | 2015-05-14 | 2015-05-14 | Tube wall wearproof device of circulating fluidized bedboiler water wall dense phase area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285409A (en) * | 2019-06-14 | 2019-09-27 | 龙口矿业集团有限公司 | A kind of fluidized-bed combustion boiler staggeredly blocks abrasionproof method |
| CN112050201A (en) * | 2020-10-10 | 2020-12-08 | 清华大学 | Turbulent fluidized bed incinerator with special-shaped hearth structure |
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| JP2004019965A (en) * | 2002-06-12 | 2004-01-22 | Babcock Hitachi Kk | Fluidized bed combustion device |
| CN1587804A (en) * | 2004-08-27 | 2005-03-02 | 清华大学 | Fluidized bed boiler combustion room with anti-abration structure |
| 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 |
| CN103353111A (en) * | 2013-07-29 | 2013-10-16 | 刘欣 | Compound abrasion-proof device for water wall of circulating fluidized bed boiler |
| CN203560898U (en) * | 2013-11-22 | 2014-04-23 | 广东理文造纸有限公司 | Anti-wear device for side wall of water cooling wall of circulating fluidized bed boiler |
| CN204593378U (en) * | 2015-05-14 | 2015-08-26 | 哈尔滨哈锅锅炉工程技术有限公司 | A kind of tube wall shoe of circulating fluidized bed boiler water-cooling wall emulsion zone |
-
2015
- 2015-05-14 CN CN201510245992.9A patent/CN104791780A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004019965A (en) * | 2002-06-12 | 2004-01-22 | Babcock Hitachi Kk | Fluidized bed combustion device |
| CN1587804A (en) * | 2004-08-27 | 2005-03-02 | 清华大学 | Fluidized bed boiler combustion room with anti-abration structure |
| 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 |
| CN103353111A (en) * | 2013-07-29 | 2013-10-16 | 刘欣 | Compound abrasion-proof device for water wall of circulating fluidized bed boiler |
| CN203560898U (en) * | 2013-11-22 | 2014-04-23 | 广东理文造纸有限公司 | Anti-wear device for side wall of water cooling wall of circulating fluidized bed boiler |
| CN204593378U (en) * | 2015-05-14 | 2015-08-26 | 哈尔滨哈锅锅炉工程技术有限公司 | A kind of tube wall shoe of circulating fluidized bed boiler water-cooling wall emulsion zone |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285409A (en) * | 2019-06-14 | 2019-09-27 | 龙口矿业集团有限公司 | A kind of fluidized-bed combustion boiler staggeredly blocks abrasionproof method |
| CN112050201A (en) * | 2020-10-10 | 2020-12-08 | 清华大学 | Turbulent fluidized bed incinerator with special-shaped hearth structure |
| CN112050201B (en) * | 2020-10-10 | 2022-04-12 | 清华大学 | Turbulent fluidized bed incinerator with special-shaped hearth structure |
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Application publication date: 20150722 |