CN203464267U - Rectangular coal feeding pipe for circulation fluidized bed boiler - Google Patents
Rectangular coal feeding pipe for circulation fluidized bed boiler Download PDFInfo
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- CN203464267U CN203464267U CN201320549192.2U CN201320549192U CN203464267U CN 203464267 U CN203464267 U CN 203464267U CN 201320549192 U CN201320549192 U CN 201320549192U CN 203464267 U CN203464267 U CN 203464267U
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- inclined tube
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Abstract
The utility model provides a rectangular coal feeding pipe for a circulation fluidized bed boiler, which guarantees that the flowing direction of particles is only subjected to two-dimensional change when fuel particles enter an oblique pipe section from the vertical section of the coal feeding pipe, not only guarantees that the motion direction of the fuel particles is only within a plane, and the congestion and blocking cannot be formed through the mutual extrusion because of the leftward and rightward motion of particles, and the problem that high-moisture fuels block a coal drop pipe can be solved effectively; meanwhile the problem of the abrasion of a bottom line of a coal feeding oblique pipe is also solved because of the trend that the particles do not flow to the same point; in addition, raw materials of the structure are low in cost; the rectangular coal feeding pipe comprises a coal feeding vertical pipe and the coal feeding oblique pipe, wherein the lower end of the coal feeding vertical pipe is communicated with the upper end of the coal feeding oblique pipe; a lower part outlet end of the coal feeding oblique pipe is communicated with a hearth. The rectangular coal feeding pipe for the circulation fluidized bed boiler is characterized in that cross sections of the coal feeding vertical pipe and the coal feeding oblique pipe are rectangular; the bottom surfaces of the coal feeding vertical pipe and the coal feeding oblique pipe are particularly bottom surfaces of stainless steel plates.
Description
Technical field
The utility model relates to the coal-feeding tube technical field of structures of boiler, is specially a kind of rectangle coal-feeding tube 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 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, be just 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 utility model provides a kind of rectangle coal-feeding tube for CFBB, it guarantees that the flow direction of fuel particle particle when the vertical section from coal-feeding tube enters 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 particle side-to-side movement produces extruding mutually, can effectively solve the problem that high moisture fuel stops up coal spout; Due to particle, do not flow to the trend of same point simultaneously, 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 rectangle coal-feeding tube for CFBB, its technical scheme is such: it comprises into coal standpipe, enters coal inclined tube, described in being communicated with, the described lower end of entering coal standpipe enters the upper end of coal inclined tube, the described lower part outlet end that enters coal inclined tube is communicated with burner hearth, it is characterized in that: described in enter coal standpipe, the cross section of entering coal inclined tube is rectangle, described in enter coal standpipe, bottom surface that the bottom surface of entering coal inclined tube is specially stainless steel materials.
It is further characterized in that: described in enter coal standpipe, enter the sheet material that its excess-three mask body except bottom surface of coal inclined tube is carbon steel material, described in enter coal standpipe, the both sides of entering the bottom surface of coal inclined tube two sides adjacent with it are welded to connect respectively;
Describedly enter coal inclined tube and comprise two, be specially that coal inclined tube is entered on top, coal inclined tube is entered in bottom, the gradient that coal inclined tube and horizontal plane are entered in described top is greater than the gradient that coal inclined tube and horizontal plane are entered in bottom, the lower end that coal inclined tube is entered on described top is communicated with the upper end that coal inclined tube is entered in described bottom, described in enter coal standpipe outlet be communicated with the upper end that coal inclined tube is entered on described top;
All outer air inlets that is equipped with of upper end that coal inclined tube, bottom enter coal inclined tube, lower end are entered on described top.
Adopt after structure of the present utility model, two dimension only occurs the flow direction of fuel particle particle when the vertical section from coal-feeding tube enters inclined tube section changes, 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 particle side-to-side movement produces extruding mutually, can effectively solve the problem that high moisture fuel stops up coal spout; Due to particle, do not flow to the trend of same point simultaneously, 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 stainless steel materials, and all the other can be carbon steel material, and the cost of raw material of this structure is low.
Accompanying drawing explanation
Fig. 1 is the front view structural representation of 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 utility model;
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, enters coal inclined tube, the lower end of entering coal standpipe 1 is communicated with into the upper end of coal inclined tube, the lower part outlet end that enters coal inclined tube is communicated with burner hearth 2, the cross section of enter coal standpipe 1, entering coal inclined tube is rectangle, and the bottom surface of enter coal standpipe 1, entering coal inclined tube is specially the bottom surface 3 of stainless steel materials.Enter coal standpipe 1, enter 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 enter coal standpipe 1, entering the bottom surface of coal inclined tube two sides adjacent with it are welded to connect respectively; Enter coal inclined tube and comprise two, be specially that coal inclined tube 5 is entered on top, coal inclined tube 6 is entered in bottom, the gradient that coal inclined tube 5 and horizontal plane are entered in top is greater than the gradient that coal inclined tube 6 and horizontal plane are entered in bottom, the upper end of coal inclined tube 6 is entered in the connection bottom, lower end that coal inclined tube 5 is entered on top, and the outlet of entering coal standpipe 1 is communicated with the upper end that coal inclined tube 5 is entered on top; All outer air inlets 7 that is equipped with of upper end that coal inclined tube 5, bottom enter coal inclined tube 6, lower end are entered on top.
Claims (4)
1. the rectangle coal-feeding tube for CFBB, it comprises into coal standpipe, enters coal inclined tube, described in being communicated with, the described lower end of entering coal standpipe enters the upper end of coal inclined tube, the described lower part outlet end that enters coal inclined tube is communicated with burner hearth, it is characterized in that: described in enter coal standpipe, the cross section of entering coal inclined tube is rectangle, described in enter coal standpipe, bottom surface that the bottom surface of entering coal inclined tube is specially stainless steel materials.
2. a kind of rectangle coal-feeding tube for CFBB according to claim 1, it is characterized in that: described in enter coal standpipe, enter the sheet material that its excess-three mask body except bottom surface of coal inclined tube is carbon steel material, described in enter coal standpipe, the both sides of entering the bottom surface of coal inclined tube two sides adjacent with it are welded to connect respectively.
3. a kind of rectangle coal-feeding tube for CFBB according to claim 2, it is characterized in that: described in enter coal inclined tube and comprise two, be specially that coal inclined tube is entered on top, coal inclined tube is entered in bottom, the gradient that coal inclined tube and horizontal plane are entered in described top is greater than the gradient that coal inclined tube and horizontal plane are entered in bottom, the lower end that coal inclined tube is entered on described top is communicated with the upper end that coal inclined tube is entered in described bottom, described in enter coal standpipe outlet be communicated with the upper end that coal inclined tube is entered on described top.
4. a kind of rectangle coal-feeding tube 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 enter coal inclined tube, lower end are entered on described top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549192.2U CN203464267U (en) | 2013-09-05 | 2013-09-05 | Rectangular coal feeding pipe for circulation fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549192.2U CN203464267U (en) | 2013-09-05 | 2013-09-05 | Rectangular coal feeding pipe for circulation fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203464267U true CN203464267U (en) | 2014-03-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320549192.2U Withdrawn - After Issue CN203464267U (en) | 2013-09-05 | 2013-09-05 | Rectangular coal feeding pipe for circulation fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203464267U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453524A (en) * | 2013-09-05 | 2013-12-18 | 无锡华光锅炉股份有限公司 | Rectangular coal feeding pipe for circulating fluidized bed boiler |
| CN105927974A (en) * | 2016-06-24 | 2016-09-07 | 无锡华光锅炉股份有限公司 | Coal clogging-resistant coal feeder of circulating fluidized bed |
| CN108826280A (en) * | 2018-06-29 | 2018-11-16 | 无锡华光锅炉股份有限公司 | A kind of circulating fluidized bed boiler using Indonesia coal |
-
2013
- 2013-09-05 CN CN201320549192.2U patent/CN203464267U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453524A (en) * | 2013-09-05 | 2013-12-18 | 无锡华光锅炉股份有限公司 | Rectangular coal feeding pipe for circulating fluidized bed boiler |
| CN103453524B (en) * | 2013-09-05 | 2016-04-06 | 无锡华光锅炉股份有限公司 | A kind of rectangle coal-feeding tube for CFBB |
| CN105927974A (en) * | 2016-06-24 | 2016-09-07 | 无锡华光锅炉股份有限公司 | Coal clogging-resistant coal feeder of circulating fluidized bed |
| CN108826280A (en) * | 2018-06-29 | 2018-11-16 | 无锡华光锅炉股份有限公司 | A kind of circulating fluidized bed boiler using Indonesia coal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20160406 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20160406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |