CN202501490U - Non-mechanical coal feeding device - Google Patents
Non-mechanical coal feeding device Download PDFInfo
- Publication number
- CN202501490U CN202501490U CN2012200973892U CN201220097389U CN202501490U CN 202501490 U CN202501490 U CN 202501490U CN 2012200973892 U CN2012200973892 U CN 2012200973892U CN 201220097389 U CN201220097389 U CN 201220097389U CN 202501490 U CN202501490 U CN 202501490U
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- China
- Prior art keywords
- coal
- spout
- coal feeding
- nozzle
- feeder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a non-mechanical coal feeding device, and relates to a coal feeding device. The non-mechanical coal feeding device comprises a coal drop pipe, a top end thereof is a coal drop pipe inlet, and a bottom is a coal feeding nozzle; and the device also comprises a coal spreading air chamber which is arranged under a bottom part of the coal feeding nozzle of the coal drop pipe, and is communicated with the coal drop pipe through a coal spreading air nozzle towards the coal feeding nozzle. The non-mechanical coal feeding device is suitable for fuel input of circulating fluidized bed boilers of various capacity levels, and can prevent the problems of partial slag-bonding near a coal feeding port and burning loss of the coal feeding port.
Description
Technical field
The utility model relates to a kind of coal feeder, relates in particular to the coal feeder that is used for CFBB.
Background technology
Coal feeder is one of capital equipment of CFBB, in large circulating fluidized bed boiler, has generally adopted on-mechanical formula coal feeder; At the on-mechanical formula coal feeder that uses now, owing to reasons such as structures, near the fresh fuel enrichment coal feeding hole usually appears, form localized hyperthermia, cause near the local slagging scorification coal feeding hole, and problem such as coal feeding hole scaling loss.
The utility model content
The purpose of the utility model is: proposes a kind of novel on-mechanical formula coal feeder, avoids near fresh fuel enrichment the coal feeding hole that prior art exists, form localized hyperthermia, cause near the local slagging scorification coal feeding hole, and problem such as coal feeding hole scaling loss.
The purpose of the utility model realizes through following technical proposals:
A kind of on-mechanical formula coal feeder comprises coal spout, and its top is the coal spout inlet; The bottom is the coal supply spout; Also comprise the coal spread wind air compartment, said coal spread wind air compartment is located at coal spout coal supply spout bottom, and is communicated with coal spout through the coal spread wind nozzle towards the coal supply spout.
As optimal way, said coal spout coal spout entrance also is provided with sealing wind air compartment, and it is communicated with coal spout through sealing wind nozzle.
This coal feeder entrance is provided with sealing wind nozzle, can prevent that flue gas is played a reversed role through coal spout in the burner hearth.
As optimal way, said coal supply spout both sides are provided with the slagging-off nozzle.
These coal feeder coal supply spout both sides are provided with the slagging-off nozzle, as subsequent use measure, when slagging scorification or putty occurring in coal supply spout exit, can blow down with compressed air or steam fast.
As optimal way, said coal supply spout and coal spread wind nozzle average level direction are provided with.
This coal feeder has adopted level to get into coal supply spout and the horizontal direction coal spread wind nozzle of boiler furnace, can avoid near the fresh fuel enrichment coal feeding hole, and formation localized hyperthermia causes near the local slagging scorification coal feeding hole, and problem such as coal feeding hole scaling loss.
As optimal way, said coal spout is a round tube.
Adopted circular coal spout, made fuel be difficult for piling up, got into boiler furnace smoothly, quickly at coal spout.
The workflow of the utility model: coal supply gets into coal feeder through the coal spout inlet, gets into boiler furnace through coal spout, coal supply spout; Be provided with sealing wind air compartment at the coal spout entrance sealing wind is provided, to prevent that flue gas is played a reversed role in the burner hearth; Be provided with the coal spread wind air compartment in coal supply spout bottom coal spread wind is provided, so that fuel gets into burner hearth smoothly and avoid fresh fuel in the enrichment of spout annex; Be provided with the slagging-off nozzle in coal supply spout both sides, can insert compressed air or steam in case of necessity, blow down the slagging scorification or the putty in coal supply spout exit.
The beneficial effect of the utility model: the fuel input of various capacitance grade CFBBs can be adapted to, near local slagging scorification coal feeding hole can be avoided, and problem such as coal feeding hole scaling loss.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is that the P of Fig. 1 is to structural representation;
Fig. 3 is that the K of Fig. 1 is to structural representation;
Among the figure, 1, coal spout inlet 2, sealing wind air compartment 3, sealing wind nozzle 4, coal spout 5, coal supply spout
6, coal spread wind air compartment 7, coal spread wind nozzle 8, slagging-off nozzle.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing the utility model is further described.
Like Fig. 1,2, shown in 3; A kind of on-mechanical formula coal feeder comprises coal spout 4, and its top is a coal spout inlet 1; The bottom is a coal supply spout 5; Also comprise coal spread wind air compartment 6, coal spread wind air compartment 6 is located at coal spout 4 coal supply spouts 5 bottoms, and is communicated with coal spout 4 through the coal spread wind nozzle 7 towards coal supply spout 5.As optimal way, shown in present embodiment, coal supply spout 5 is provided with coal spread wind nozzle 7 average level directions.Coal spout 4 coal spouts inlet also is provided with sealing wind air compartment 2 for 1 section, and it is communicated with coal spout 4 through sealing wind nozzle 3, can prevent that flue gas is played a reversed role through coal spout 4 in the burner hearth.Coal supply spout 5 both sides are provided with slagging-off nozzle 8, as subsequent use measure, when slagging scorification or putty occurring in coal supply spout 5 exits, can blow down with compressed air or steam fast.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. an on-mechanical formula coal feeder comprises coal spout, and its top is the coal spout inlet; The bottom is the coal supply spout; It is characterized in that: also comprise the coal spread wind air compartment, said coal spread wind air compartment is located at coal spout coal supply spout bottom, and is communicated with coal spout through the coal spread wind nozzle towards the coal supply spout.
2. on-mechanical formula coal feeder as claimed in claim 1 is characterized in that: said coal spout coal spout entrance also is provided with sealing wind air compartment, and it is communicated with coal spout through sealing wind nozzle.
3. on-mechanical formula coal feeder as claimed in claim 1 is characterized in that: said coal supply spout both sides are provided with the slagging-off nozzle.
4. on-mechanical formula coal feeder as claimed in claim 1 is characterized in that: said coal supply spout and coal spread wind nozzle average level direction are provided with.
5. the on-mechanical formula coal feeder described in arbitrary claim in the claim 1 to 4, it is characterized in that: said coal spout is a round tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200973892U CN202501490U (en) | 2012-03-15 | 2012-03-15 | Non-mechanical coal feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200973892U CN202501490U (en) | 2012-03-15 | 2012-03-15 | Non-mechanical coal feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202501490U true CN202501490U (en) | 2012-10-24 |
Family
ID=47038103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200973892U Expired - Lifetime CN202501490U (en) | 2012-03-15 | 2012-03-15 | Non-mechanical coal feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202501490U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997229A (en) * | 2012-12-17 | 2013-03-27 | 江联重工股份有限公司 | Slight fuel accumulation ignition increasing mechanical feeding method |
-
2012
- 2012-03-15 CN CN2012200973892U patent/CN202501490U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997229A (en) * | 2012-12-17 | 2013-03-27 | 江联重工股份有限公司 | Slight fuel accumulation ignition increasing mechanical feeding method |
| CN102997229B (en) * | 2012-12-17 | 2015-07-22 | 江联重工股份有限公司 | Slight fuel accumulation ignition increasing mechanical feeding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121024 |
|
| CX01 | Expiry of patent term |