CN103453524A - Rectangular coal feeding pipe for circulating fluidized bed boiler - Google Patents
Rectangular coal feeding pipe for circulating fluidized bed boiler Download PDFInfo
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- CN103453524A CN103453524A CN2013103994851A CN201310399485A CN103453524A CN 103453524 A CN103453524 A CN 103453524A CN 2013103994851 A CN2013103994851 A CN 2013103994851A CN 201310399485 A CN201310399485 A CN 201310399485A CN 103453524 A CN103453524 A CN 103453524A
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Abstract
The invention provides a rectangular coal feeding pipe for a circulating fluidized bed boiler, which guarantees that the flowing direction of grains only has a two-dimensional change when fuel grains enter an inclined pipe section from a vertical section of a coal feeding pipe, so that movement directions of the fuel grains are only in one plane, and congestion and blocking caused by mutually squeezing due to left and right movement of the grains can be avoided, and the problem that a coal falling pipe is blocked by high-water-content fuel is effectively solved; meanwhile, the grains have no tendency of flowing to the same point so that the abrasion problem of a bottom line of a coal feeding inclined pipe is also solved; moreover, the cost of raw materials of the structure is low. The rectangular coal feeding pipe comprises a coal feeding vertical pipe and a coal feeding inclined pipe; the lower end of the coal feeding vertical pipe is communicated with the upper end of the coal feeding inclined pipe; the outlet end of the lower part of the coal feeding inclined pipe is communicated with a hearth; the rectangular coal feeding pipe is characterized in that the sections of the coal feeding vertical pipe and the coal feeding inclined pipe are rectangular; the bottom faces of the coal feeding vertical pipe and the coal feeding inclined pipe are made of stainless steel sheet materials.
Description
Technical field
The present invention relates to the coal-feeding tube technical field of structures of boiler, be specially a kind of coal-feeding tube of the rectangle for CFBB.
Background technology
Current CFBB adopts the standpipe after stokehold or stove to add the coal-feeding mode of inclined tube mostly, and all adopted circular coal-feeding tube structure, seen Fig. 1～3, the mobile meeting of coal particle causes wearing and tearing to the coal spout bottom, therefore whole coal spout all must adopt stainless steel material, and cost of manufacture is high.Particularly in the large situation of fuel moisture very easily in the inclined tube section blockage phenomenon of coal spout, and easily at the lower limb of inclined tube, wear and tear, the long-term stability that affects boiler is moved.This obstruction and wear problem are to be caused by himself circular configuration, see Fig. 3, particles all in the downslide process of fuel particle all can flow to the minimum point of pipeline, the fuel itself that moisture is larger just has certain adhesive, add and pour in a large number a bit, just be easy to stop up, also cause the lower side of pipeline to be worn simultaneously, wear and tear too concentrated, the working life of coal-feeding tube is short.
Summary of the invention
For the problems referred to above, the invention provides a kind of coal-feeding tube of the rectangle for CFBB, it guarantees that the flow direction of fuel particle particle when the vertical section from coal-feeding tube enters the inclined tube section two dimension only occurs and changes, guarantee that the direction of motion of fuel particle is only in a plane, can not form crowded obstruction because the particle side-to-side movement produces extruding mutually, can effectively solve the problem that high moisture fuel stops up coal spout; Do not flow to the trend of same point simultaneously due to particle, solved the wear problem of coal supply inclined tube bottom line yet; In addition, the cost of raw material of this structure is low.
A kind of coal-feeding tube of the rectangle for CFBB, its technical scheme is such: it comprises into the coal standpipe, advances the coal inclined tube, the described lower end of advancing the coal standpipe is communicated with the described upper end of advancing the coal inclined tube, the described lower part outlet end that advances the coal inclined tube is communicated with burner hearth, it is characterized in that: the cross section of describedly advance the coal standpipe, advancing the coal inclined tube is rectangle, and the bottom surface of describedly advance the coal standpipe, advancing the coal inclined tube is specially the bottom surface of stainless steel materials.
It is further characterized in that: describedly advance the coal standpipe, advance the sheet material that its excess-three mask body except bottom surface of coal inclined tube is carbon steel material, the both sides of describedly advance the coal standpipe, entering the bottom surface of coal inclined tube two sides adjacent with it are welded to connect respectively;
Describedly advance the coal inclined tube and comprise two, be specially that the coal inclined tube is advanced on top, the coal inclined tube is advanced in bottom, the gradient that coal inclined tube and horizontal plane are advanced in described top is greater than the gradient that coal inclined tube and horizontal plane are advanced in bottom, the lower end that the coal inclined tube is advanced on described top is communicated with the upper end that the coal inclined tube is advanced in described bottom, and described outlet of advancing the coal standpipe is communicated with the upper end that the coal inclined tube is advanced on described top;
All outer air inlets that is equipped with of upper end that coal inclined tube, bottom advance the coal inclined tube, lower end are advanced on described top.
After adopting structure of the present invention, when fuel particle enters the inclined tube section at the vertical section from coal-feeding tube, the two dimension variation only occurs in the flow direction of particle, the extruding of Bu Huixiang center, guarantee that the direction of motion of fuel particle is only in a plane, can not form crowded obstruction because the particle side-to-side movement produces extruding mutually, can effectively solve the problem that high moisture fuel stops up coal spout; Do not flow to the trend of same point simultaneously due to particle, solved the wear problem of coal supply inclined tube bottom line yet; All fuel particles are all on a declining curve, and itself and whole bottom surface form wear surface, and only needing bottom surface is that stainless steel materials gets final product, and all the other can be carbon steel material, and the cost of raw material of this structure is low.
The accompanying drawing explanation
The front view structural representation that Fig. 1 is prior art;
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1;
Fig. 3 is the B-B sectional structure schematic diagram of Fig. 1;
Fig. 4 is structural representation of the present invention;
Fig. 5 is the C-C sectional structure schematic diagram of Fig. 4;
Fig. 6 is the D-D sectional structure schematic diagram of Fig. 4.
The specific embodiment
See Fig. 4～Fig. 6, it comprises into coal standpipe 1, advances the coal inclined tube, the lower end of advancing coal standpipe 1 is communicated with into the upper end of coal inclined tube, the lower part outlet end that advances the coal inclined tube is communicated with burner hearth 2, the cross section of advance coal standpipe 1, advancing the coal inclined tube is rectangle, and the bottom surface of advance coal standpipe 1, advancing the coal inclined tube is specially the bottom surface 3 of stainless steel materials.Advance coal standpipe 1, advance the sheet material 4 that its excess-three mask body except bottom surface of coal inclined tube is carbon steel material, the both sides of advance coal standpipe 1, entering the bottom surface of coal inclined tube two sides adjacent with it are welded to connect respectively; Advance the coal inclined tube and comprise two, be specially that coal inclined tube 5 is advanced on top, coal inclined tube 6 is advanced in bottom, the gradient that coal inclined tube 5 and horizontal plane are advanced in top is greater than the gradient that coal inclined tube 6 and horizontal plane are advanced in bottom, the upper end of coal inclined tube 6 is entered in the connection bottom, lower end that coal inclined tube 5 is advanced on top, and the outlet of advancing coal standpipe 1 is communicated with the upper end that coal inclined tube 5 is advanced on top; All outer air inlets 7 that is equipped with of upper end that coal inclined tube 5, bottom advance coal inclined tube 6, lower end are advanced on top.
Claims (4)
1. the coal-feeding tube of the rectangle for CFBB, it comprises into the coal standpipe, advances the coal inclined tube, the described lower end of advancing the coal standpipe is communicated with the described upper end of advancing the coal inclined tube, the described lower part outlet end that advances the coal inclined tube is communicated with burner hearth, it is characterized in that: the cross section of describedly advance the coal standpipe, advancing the coal inclined tube is rectangle, and the bottom surface of describedly advance the coal standpipe, advancing the coal inclined tube is specially the bottom surface of stainless steel materials.
2. a kind of coal-feeding tube of the rectangle for CFBB according to claim 1, it is characterized in that: describedly advance the coal standpipe, advance the sheet material that its excess-three mask body except bottom surface of coal inclined tube is carbon steel material, the both sides of describedly advance the coal standpipe, entering the bottom surface of coal inclined tube two sides adjacent with it are welded to connect respectively.
3. a kind of coal-feeding tube of the rectangle for CFBB according to claim 2, it is characterized in that: describedly advance the coal inclined tube and comprise two, be specially that the coal inclined tube is advanced on top, the coal inclined tube is advanced in bottom, the gradient that coal inclined tube and horizontal plane are advanced in described top is greater than the gradient that coal inclined tube and horizontal plane are advanced in bottom, the lower end that the coal inclined tube is advanced on described top is communicated with the upper end that the coal inclined tube is advanced in described bottom, and described outlet of advancing the coal standpipe is communicated with the upper end that the coal inclined tube is advanced on described top.
4. a kind of coal-feeding tube of the rectangle for CFBB according to claim 3 is characterized in that: all outer air inlets that is equipped with of upper end that coal inclined tube, bottom advance the coal inclined tube, lower end are advanced on described top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399485.1A CN103453524B (en) | 2013-09-05 | 2013-09-05 | A kind of rectangle coal-feeding tube for CFBB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399485.1A CN103453524B (en) | 2013-09-05 | 2013-09-05 | A kind of rectangle coal-feeding tube for CFBB |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103453524A true CN103453524A (en) | 2013-12-18 |
| CN103453524B CN103453524B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310399485.1A Active CN103453524B (en) | 2013-09-05 | 2013-09-05 | A kind of rectangle coal-feeding tube for CFBB |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912870A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Wear-resistant type coal supply pipe structure for circulating fluidized bed boiler |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547764U (en) * | 2009-10-21 | 2010-08-11 | 中国铝业股份有限公司 | Circulating fluidized bed boiler coal falling pipe |
| CN202303357U (en) * | 2011-10-13 | 2012-07-04 | 邹城市圣瑞达能源有限公司 | Square multi-stage stepped air supply and anti-clogging coal drop pipe |
| CN202414739U (en) * | 2012-02-03 | 2012-09-05 | 四川吉兴达热能设备有限责任公司 | Corner coal conduit |
| CN203464267U (en) * | 2013-09-05 | 2014-03-05 | 无锡华光锅炉股份有限公司 | Rectangular coal feeding pipe for circulation fluidized bed boiler |
-
2013
- 2013-09-05 CN CN201310399485.1A patent/CN103453524B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547764U (en) * | 2009-10-21 | 2010-08-11 | 中国铝业股份有限公司 | Circulating fluidized bed boiler coal falling pipe |
| CN202303357U (en) * | 2011-10-13 | 2012-07-04 | 邹城市圣瑞达能源有限公司 | Square multi-stage stepped air supply and anti-clogging coal drop pipe |
| CN202414739U (en) * | 2012-02-03 | 2012-09-05 | 四川吉兴达热能设备有限责任公司 | Corner coal conduit |
| CN203464267U (en) * | 2013-09-05 | 2014-03-05 | 无锡华光锅炉股份有限公司 | Rectangular coal feeding pipe for circulation fluidized bed boiler |
Non-Patent Citations (1)
| Title |
|---|
| 孔环等: "圆形落煤管的改造", 《山东工业技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912870A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Wear-resistant type coal supply pipe structure for circulating fluidized bed boiler |
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| Publication number | Publication date |
|---|---|
| CN103453524B (en) | 2016-04-06 |
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Address after: 214028 No. 3 Chengnan Road, new Wu District, Jiangsu, Wuxi Patentee after: Wuxi Huaguang Environmental Protection Energy Group Co., Ltd Address before: 214028 No. 3 Chengnan Road, New District, Jiangsu, Wuxi Patentee before: WUXI HUAGUANG BOILER Co.,Ltd. |
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