CN202598502U - Coal blockage and smoke return resistant coal feeding device - Google Patents
Coal blockage and smoke return resistant coal feeding device Download PDFInfo
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- CN202598502U CN202598502U CN 201220272314 CN201220272314U CN202598502U CN 202598502 U CN202598502 U CN 202598502U CN 201220272314 CN201220272314 CN 201220272314 CN 201220272314 U CN201220272314 U CN 201220272314U CN 202598502 U CN202598502 U CN 202598502U
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- feeding tube
- pipe
- coal feeding
- feeding pipe
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Abstract
The utility model discloses a coal blockage and smoke return resistant coal feeding device. The coal blockage and smoke return resistant coal feeding device comprises a coal feeding pipe and a coal falling pipe, wherein the coal feeding pipe is obliquely connected to a hearth wall of a boiler; the coal falling pipe is connected to the coal feeding pipe; the coal falling pipe is obliquely connected to the coal feeding pipe; an upper port of the coal feeding pipe is connected with a sealing cover; an air blowing pipe extending into the coal feeding pipe is connected to the sealing cover; a blowing air inlet, which is formed above the connection of the coal feeding pipe and the coal falling pipe, is formed in the coal feeding pipe; a blowing air cover positioned on the lower side of the air blowing pipe is connected to the inner wall of the coal feeding pipe; and a blowing air passage communicated with a cavity of the coal feeding pipe and the blowing air inlet is enclosed by the blowing air cover and the pipe wall of the lower side of the coal feeding pipe. The coal blockage and smoke return resistant coal feeding device disclosed by the utility model has the advantages that a simple structure is obtained and high temperature smoke return phenomenon and coal blockage phenomenon can be prevented.
Description
Technical field
The utility model relates to a kind of device of in the burner hearth of boiler, carrying coal, is specifically related to a kind of anti-chute blockage and the anti-cigarette coal feeder that returns.
Background technology
At present, mostly adopt belt-type Gravimetric Coal Feeders and coal feeder to give the CFBB coal supply.Coal feeder is made up of coal-feeding tube and the vertical coal spout that is connected on the coal-feeding tube that inclination is connected on the burner hearth thorax wall.The belt-type Gravimetric Coal Feeders is delivered to coal in the coal spout, delivers in the burner hearth through coal-feeding tube again.Mainly there is following problem in the coal feeder of said structure.The one, CFBB is when the coal of burning high-moisture, and coal-feeding tube the chute blockage phenomenon occurs through regular meeting, when chute blockage is serious even cause boiler shutdown; The 2nd, high-temperature flue gas usually can seal in feeder through coal spout, and belt is burnt out.
Summary of the invention
The technical problem that the utility model will solve is to provide a kind of anti-chute blockage and anti-flue gas to return the coal feeder of string to above-mentioned defective.
In order to solve the problems of the technologies described above; The utility model provides a kind of anti-chute blockage and the anti-cigarette coal feeder that returns with following structure; Comprise the coal-feeding tube on the hearth wall that tilts to be connected boiler and be connected the coal spout on the coal-feeding tube; Its design feature is being connected on the coal-feeding tube of coal spout inclination, and the coal-feeding tube port is connected with seal cover, is connected with the blower that stretches in the coal-feeding tube on the seal cover; Coal-feeding tube is provided with the purging wind inlet that is positioned at coal-feeding tube and top, coal spout junction; Be connected with the purging fan housing that is positioned at the blower downside on the coal-feeding tube inwall, sweep fan housing and surround the purging wind passage that is communicated with coal-feeding tube inner chamber and purging wind inlet with coal-feeding tube downside tube wall.
Be connected with the coal spread wind cover that is positioned at coal-feeding tube and below, coal spout junction on the said coal-feeding tube, coal spread wind cover and coal-feeding tube downside tube wall surround the coal spread wind passage, and coal spread wind passage lower end is communicated with burner hearth, and coal spread wind passage upper end is provided with the coal spread wind import.
Said coal spout is made up of two sections, is connected with expansion joint between the two sections.
During use blower, purging wind inlet are linked to each other with blower fan respectively with the coal spread wind import, the wind that blower blows out requires to be high speed winds.After the high speed winds that blower blows out got into coal-feeding tube, because dilatation, dynamic pressure reduced, and static pressure increases, thereby had played the effect of offsetting malleation in the burner hearth, can effectively stop the string that returns of high-temperature flue gas.Purge wind after the entering of purging wind inlet; Form stable direct projection air-flow at purging wind passage; With the coal-feeding tube tube wall of coal-feeding tube and coal spout delivery position corresponding position on form one deck air film pad, coal drops on here and will be blown away from coal spout, thereby has solved the chute blockage problem.Coal spout is obliquely installed, and the angle of coal breakage inclined tube and coal-feeding tube increases, and makes coal supply more smooth and easy, also plays the chute blockage problem that prevents.
In sum, the advantage of the utility model is: simple in structure, can prevent that high-temperature flue gas from returning string and the chute blockage phenomenon takes place.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further to specify:
Fig. 1 is the structural representation of the utility model;
Fig. 2 dissects and postrotational profile along A-A line among Fig. 1.
The specific embodiment
As depicted in figs. 1 and 2, anti-chute blockage comprises the coal-feeding tube 1 on the hearth wall 12 that tilts to be connected boiler with the anti-cigarette coal feeder that returns, and is connected with the coal spout 2 that is obliquely installed on the coal-feeding tube 1.Coal-feeding tube 1 port is connected with seal cover 3, is connected with the blower 4 that stretches in the coal-feeding tube 1 on the seal cover 3; Coal-feeding tube 1 is provided with the purging wind inlet 5 that is positioned at coal-feeding tube 1 and top, coal spout 2 junctions; Be connected with the purging fan housing 6 that is positioned at blower 4 downsides on coal-feeding tube 1 inwall, sweep fan housing 6 and surround the purging wind passage 7 that is communicated with coal-feeding tube 1 inner chamber and purging wind inlet 5 with coal-feeding tube 1 downside tube wall.The outlet air end of purging wind passage 7 is corresponding with the position of coal-feeding tube 1 and coal spout 2 junctions, and the outlet air end of blower 4 is positioned at the front side that purges wind passage 7 outlet air ends.Be connected with the coal spread wind cover 8 that is positioned at coal-feeding tube 1 and below, coal spout 2 junctions on the above-mentioned coal-feeding tube 1; Coal spread wind cover 8 surrounds coal spread wind passage 9 with coal-feeding tube 1 downside tube wall; Coal spread wind passage 9 lower ends are communicated with burner hearth, and coal spread wind passage 9 upper ends are provided with coal spread wind import 10.Coal spread wind forms the stable direct projection air-flow of high speed after getting into from coal spread wind import 10 in coal spread wind passage 9, can the fire coal that in coal-feeding tube, flows out be sowed equably in the combustion chamber, can significantly strengthen combustion efficiency.For the obstruction that prevents that coal spout 2 from possibly occur, said coal spout 2 is made up of two sections, is connected with expansion joint 11 between the two sections.
Claims (3)
1. anti-chute blockage and the anti-cigarette coal feeder that returns; Comprise the coal-feeding tube (1) on the hearth wall that tilts to be connected boiler and be connected the coal spout (2) on the coal-feeding tube (1); It is characterized in that being connected on the coal-feeding tube (1) of coal spout (2) inclination; Coal-feeding tube (1) port is connected with seal cover (3), is connected with the blower (4) that stretches in the coal-feeding tube (1) on the seal cover (3); Coal-feeding tube (1) is provided with the purging wind inlet (5) that is positioned at coal-feeding tube (1) and top, coal spout (2) junction; Be connected with the purging fan housing (6) that is positioned at blower (4) downside on coal-feeding tube (1) inwall, sweep fan housing (6) and surround the purging wind passage (7) that is communicated with coal-feeding tube (1) inner chamber and purging wind inlet (5) with coal-feeding tube (1) downside tube wall.
2. anti-chute blockage as claimed in claim 1 and the anti-cigarette coal feeder that returns; It is characterized in that being connected with on the said coal-feeding tube (1) the coal spread wind cover (8) that is positioned at coal-feeding tube (1) and below, coal spout (2) junction; Coal spread wind cover (8) surrounds coal spread wind passage (9) with coal-feeding tube (1) downside tube wall; Coal spread wind passage (9) lower end is communicated with burner hearth, and coal spread wind passage (9) upper end is provided with coal spread wind import (10).
3. according to claim 1 or claim 2 anti-chute blockage returns the cigarette coal feeder with anti-, it is characterized in that said coal spout (2) is made up of two sections, is connected with expansion joint (11) between the two sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220272314 CN202598502U (en) | 2012-06-11 | 2012-06-11 | Coal blockage and smoke return resistant coal feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220272314 CN202598502U (en) | 2012-06-11 | 2012-06-11 | Coal blockage and smoke return resistant coal feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202598502U true CN202598502U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220272314 Expired - Fee Related CN202598502U (en) | 2012-06-11 | 2012-06-11 | Coal blockage and smoke return resistant coal feeding device |
Country Status (1)
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| CN (1) | CN202598502U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953923A (en) * | 2014-05-04 | 2014-07-30 | 四川省宜宾惠美线业有限责任公司 | Coal distribution device |
| CN104266181A (en) * | 2014-10-14 | 2015-01-07 | 济南锅炉集团有限公司 | Scattering type coal supply device |
| CN104266180A (en) * | 2014-10-14 | 2015-01-07 | 济南锅炉集团有限公司 | Air cushion type coal spreading air device |
| CN107166378A (en) * | 2017-06-08 | 2017-09-15 | 哈尔滨锅炉厂有限责任公司 | A kind of coal feeder for CFB boiler |
| CN112325277A (en) * | 2020-12-16 | 2021-02-05 | 无锡华光环保能源集团股份有限公司 | Coal-spreading air arrangement structure for boiler spiral coal feeder |
| CN112377897A (en) * | 2020-12-29 | 2021-02-19 | 金沂蒙集团有限公司 | Adjustable coal feeder pipe connecting device of coal feeding system of circulating fluidized bed boiler |
-
2012
- 2012-06-11 CN CN 201220272314 patent/CN202598502U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953923A (en) * | 2014-05-04 | 2014-07-30 | 四川省宜宾惠美线业有限责任公司 | Coal distribution device |
| CN103953923B (en) * | 2014-05-04 | 2016-02-10 | 四川省宜宾惠美线业有限责任公司 | A kind of coal sorting feeder |
| CN104266181A (en) * | 2014-10-14 | 2015-01-07 | 济南锅炉集团有限公司 | Scattering type coal supply device |
| CN104266180A (en) * | 2014-10-14 | 2015-01-07 | 济南锅炉集团有限公司 | Air cushion type coal spreading air device |
| CN107166378A (en) * | 2017-06-08 | 2017-09-15 | 哈尔滨锅炉厂有限责任公司 | A kind of coal feeder for CFB boiler |
| CN112325277A (en) * | 2020-12-16 | 2021-02-05 | 无锡华光环保能源集团股份有限公司 | Coal-spreading air arrangement structure for boiler spiral coal feeder |
| CN112377897A (en) * | 2020-12-29 | 2021-02-19 | 金沂蒙集团有限公司 | Adjustable coal feeder pipe connecting device of coal feeding system of circulating fluidized bed boiler |
| CN112377897B (en) * | 2020-12-29 | 2022-07-15 | 金沂蒙集团有限公司 | Adjustable coal feeder pipe connecting device of coal feeding system of circulating fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20190611 |