CN105021252A - Level gage for pulverized coal bunker of pulverized coal fired boiler - Google Patents
Level gage for pulverized coal bunker of pulverized coal fired boiler Download PDFInfo
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- CN105021252A CN105021252A CN201510113133.4A CN201510113133A CN105021252A CN 105021252 A CN105021252 A CN 105021252A CN 201510113133 A CN201510113133 A CN 201510113133A CN 105021252 A CN105021252 A CN 105021252A
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- pulverized coal
- coal bin
- flue gas
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- coal bunker
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Abstract
The invention discloses a level gage for a pulverized coal bunker of a pulverized coal fired boiler. The side wall of the pulverized coal bunker is provided with pipe holes, in which pressure gages and pressure sensors are arranged. The pressure sensors are connected with a controller. The pulverized coal bunker is connected with a flue gas dispersing cylinder by means of the pipe holes. The flue gas dispersing cylinder is connected with an induced draft fan by means of a flue gas conveying pipeline. The other end of the induced draft fan is connected with a horizontal gas duct by means of the flue gas conveying pipeline. The induced draft fan is used for conveying fuel gas at the tail portion of the boiler to the flue gas dispersing cylinder and then conveying fuel gas into the pulverized coal bunker by means of the flue gas conveying pipeline and the pipe holes. The level gage for the pulverized coal bunker of the pulverized coal fired boiler has following beneficial effects: based on variation in gas pressure of the pipe holes, coal supply can be controlled; when the pulverized coal bunker is filled up with coal, feeding operation is stopped; when powder storage amount of the pulverized coal bunker decreases to certain position, material supply operation is started so that a function of controlling coal feeding according to need is fulfilled, thereby conveniently controlling powder amount of the pulverized coal bunker and the position of powder; flue gas instead of nitrogen gas, with low content of combustion-supporting gas, is piped into the pulverized coal bunker so that operation cost is decreased and powder detonation in the pulverized coal bunker is avoided; and the level gage for the pulverized coal bunker of the pulverized coal fired boiler is safe and reliable.
Description
Technical field
The invention belongs to Pulverized Coal Bin equipment technical field, particularly relate to a kind of pulverized coal firing boiler Pulverized Coal Bin level-sensing device.
Background technology
The feature of China's energy resources is rich coal, oil starvation, weak breath, coal at present and in the future quite over a long time in will be all the leading of China's energy structure.Pulverized coal firing boiler is one of main coal equipment of China, and Pulverized Coal Bin will by heavy demand.The exact position of Pulverized Coal Bin material level is the important topic of research at present.At present, the mode of common test pulverized coal firing boiler coal storage powder storehouse material level has supercritical ultrasonics technology, radar method, weight method.Supercritical ultrasonics technology and radar method require high to storage Pulverized Coal Bin environment, and internal gas must be clean, because Pulverized Coal Bin environment condition is poor, directly has influence on test accuracy, and therefore supercritical ultrasonics technology and radar method test are difficult to realize; Weight method complicated operation, there is potential safety hazard.
Summary of the invention
In order to solve the problems of the prior art, the object of the present invention is to provide a kind of pulverized coal firing boiler Pulverized Coal Bin level-sensing device, structure is convenient to control the powder amount in Pulverized Coal Bin, is conducive to again the powder detonation prevented in Pulverized Coal Bin.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of pulverized coal firing boiler Pulverized Coal Bin level-sensing device, it is characterized in that: comprise Pulverized Coal Bin, pore, tensimeter, pressure transducer, divide flue gas cylinder, smoke conveying duct, induced draft fan, horizontal flue and controller, described Pulverized Coal Bin is cylinder type steel plate structure, Pulverized Coal Bin sidewall arranges a pore every 0.5m, described point of flue gas cylinder is that steel pipe is made, be connected every the pore of 0.5m perforate with Pulverized Coal Bin sidewall, divide the end sealing of flue gas cylinder, be connected with smoke conveying duct bottom it, setting pressure table and pressure transducer on the pore of described Pulverized Coal Bin sidewall, pressure transducer is connected with controller, one end of described induced draft fan is connected with a point flue gas cylinder by smoke conveying duct, the other end of described induced draft fan connects horizontal flue.
Further, the diameter of described Pulverized Coal Bin is set to 3 ~ 5m, is highly set to 6 ~ 10m.
Further, the gas passed in described Pulverized Coal Bin is flue gas, can replace nitrogen, and combustion-supporting gas component content is low.
Further, equal setting pressure table and pressure transducer on each pore, pressure signal sends controller to through pressure transducer.
Further, when gaseous tension in the position pore having powder is large in described Pulverized Coal Bin, on controller, pilot lamp is set to green (or other colors), and when little without gaseous tension in the pore of powder position, on controller, pilot lamp becomes redness (or other colors).
Further, described horizontal flue is boiler tail smoke discharging pipe.
The beneficial effect of patent of the present invention is:
The tensimeter that the pore of Pulverized Coal Bin sidewall is installed receives the gaseous tension signal in pore, pressure signal is sent to controller through pressure transducer, signalization lamp and switch on controller, open according to gas pressure change in pore, close feeder, control coal supply, and can effectively provide the accurate location of Pulverized Coal Bin powder: expire stopping feed to Pulverized Coal Bin; When dropping to certain position to Pulverized Coal Bin powder reserves, start feed; Achieve control on demand coal supply function.
When gaseous tension in the position pore that Pulverized Coal Bin has powder is large, on controller, pilot lamp is set to green (or other colors); When in the pore of coal dust free position, gaseous tension is little, on controller, pilot lamp becomes redness (or other colors), is convenient to control the powder amount of Pulverized Coal Bin and understand the position of powder.
The gas passed in Pulverized Coal Bin of the present invention is flue gas, and in flue gas, combustion-supporting gas comparision contents is low, can reduce operating cost, can prevent again powder detonation in Pulverized Coal Bin, safe and reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, Pulverized Coal Bin, 2, pore, 3, tensimeter, 4, pressure transducer, 5, point flue gas cylinder, 6, smoke conveying duct, 7, induced draft fan, 8, horizontal flue, 9, controller.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described.
As shown in Figure 1, a kind of pulverized coal firing boiler Pulverized Coal Bin level-sensing device, comprise Pulverized Coal Bin 1, pore 2, tensimeter 3, pressure transducer 4, point flue gas cylinder 5, smoke conveying duct 6, induced draft fan 7, horizontal flue 8 and controller 9, described induced draft fan 7 is connected with horizontal flue 8 by smoke conveying duct 6, and is connected with a point flue gas cylinder 5 by smoke conveying duct 6; Divide flue gas cylinder 5 to be connected with the pore 2 on Pulverized Coal Bin 1 sidewall, setting pressure table 3 and pressure transducer 4 on pore 2, pressure signal is sent to controller 9 through pressure transducer 4.
Further, described Pulverized Coal Bin 1 is cylinder type steel plate structure, and arranging diameter is 3 ~ 5m, is highly 6 ~ 10m, and a pore 2 is made a call to every 0.5m in the longitudinal appropriate location of cylindrical shell, and pore 2 is connected with a point flue gas cylinder 5.
Further, setting pressure table 3 and pressure transducer 4 on described pore 2, and through pressure transducer 4, pressure signal is sent to controller 9, control Pulverized Coal Bin 1 powder position according to gas pressure change in pore 2.
Further, described flue gas enters a point flue gas cylinder 5 by smoke conveying duct 6, and flue gas is sent in the longitudinal pore 2 of Pulverized Coal Bin 1 sidewall by a point flue gas cylinder 5 respectively, has gaseous tension in the position pore 2 of powder large in Pulverized Coal Bin 1; Little without gaseous tension in the position pore 2 of powder; Flue gas directly enters in Pulverized Coal Bin 1, and in flue gas, combustion-supporting gas comparision contents is low, replaces nitrogen, can reduce operating cost, can prevent again powder detonation in Pulverized Coal Bin 1.
Further, when in described pore 1, gaseous tension is large, on controller 9, pilot lamp is set to green (or other colors), gaseous tension hour in pore 2, and on controller 9, pilot lamp becomes redness (or other colors).
Described by the flue gas (less than 100 DEG C) in boiler tail horizontal flue 8, input Pulverized Coal Bin 1 by induced draft fan 7 by smoke conveying duct 6.On the one hand, in flue gas, combustion-supporting gas comparision contents is low, can prevent powder detonation in Pulverized Coal Bin 1; On the other hand, flue gas replaces nitrogen, reduces operating cost; In addition, by dress tensimeter 3 and pressure transducer 4 on the pore 2 of input Pulverized Coal Bin 1 sidewall, when in the position pore 2 having powder, gaseous tension is large, on controller 9, pilot lamp is set to green (or other colors), when little without gaseous tension in the position pore 2 of powder, on controller 9, pilot lamp becomes redness (or other colors).The gaseous tension signal in pore 2 is imported into controller 9, control on demand coal supply system through pressure transducer 4.Expire stopping feed to Pulverized Coal Bin 1, when dropping to certain position to Pulverized Coal Bin 1 powder reserves, start feed.
The embodiment of patent of the present invention is stated, and is not limited thereto, and is anyly familiar with those skilled in the art in the technical scope that the present invention discloses, and can expect change easily or replace, within the protection domain that all should be encompassed in patent of the present invention.
Claims (6)
1. a pulverized coal firing boiler Pulverized Coal Bin level-sensing device, it is characterized in that: comprise Pulverized Coal Bin, pore, tensimeter, pressure transducer, divide flue gas cylinder, smoke conveying duct, induced draft fan, horizontal flue and controller, described Pulverized Coal Bin is cylinder type steel plate structure, Pulverized Coal Bin sidewall arranges a pore every 0.5m, described point of flue gas cylinder is that steel pipe is made, be connected every the pore of 0.5m perforate with Pulverized Coal Bin sidewall, divide the end sealing of flue gas cylinder, be connected with smoke conveying duct bottom it, setting pressure table and pressure transducer on the pore of described Pulverized Coal Bin sidewall, pressure transducer is connected with controller, one end of described induced draft fan is connected with a point flue gas cylinder by smoke conveying duct, the other end of described induced draft fan connects horizontal flue.
2. pulverized coal firing boiler Pulverized Coal Bin level-sensing device according to claim 1, is characterized in that: the diameter of described Pulverized Coal Bin is set to 3 ~ 5m, is highly set to 6 ~ 10m.
3. pulverized coal firing boiler Pulverized Coal Bin level-sensing device according to claim 1, is characterized in that: the gas passed in described Pulverized Coal Bin is flue gas, can replace nitrogen, and combustion-supporting gas component content is low.
4. pulverized coal firing boiler Pulverized Coal Bin level-sensing device according to claim 1, is characterized in that: equal setting pressure table and pressure transducer on each pore, pressure signal sends controller to through pressure transducer.
5. pulverized coal firing boiler Pulverized Coal Bin level-sensing device according to claim 1, it is characterized in that: when there being gaseous tension in the position pore of powder large in described Pulverized Coal Bin, on controller, pilot lamp is set to green (or other colors), when little without gaseous tension in the pore of powder position, on controller, pilot lamp becomes redness (or other colors).
6. pulverized coal firing boiler Pulverized Coal Bin level-sensing device according to claim 1, is characterized in that: described horizontal flue is boiler tail smoke discharging pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510113133.4A CN105021252A (en) | 2015-03-14 | 2015-03-14 | Level gage for pulverized coal bunker of pulverized coal fired boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510113133.4A CN105021252A (en) | 2015-03-14 | 2015-03-14 | Level gage for pulverized coal bunker of pulverized coal fired boiler |
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| CN105021252A true CN105021252A (en) | 2015-11-04 |
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| CN201510113133.4A Pending CN105021252A (en) | 2015-03-14 | 2015-03-14 | Level gage for pulverized coal bunker of pulverized coal fired boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765232A (en) * | 2016-12-16 | 2017-05-31 | 大唐东北电力试验研究所有限公司 | The dry deslagging controlled using resistance variation tendency locks wind system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11325397A (en) * | 1998-05-18 | 1999-11-26 | Katsura Seiki Seisakusho:Kk | Remaining liquid amount measuring method for bulk supply |
| CN1344888A (en) * | 2000-11-07 | 2002-04-17 | 王敏 | Multiway dense coal power phase conveying system for industrial furnaces |
| CN201653490U (en) * | 2010-05-06 | 2010-11-24 | 攀钢集团钢铁钒钛股份有限公司 | Material level detecting system |
| CN103062786A (en) * | 2013-01-25 | 2013-04-24 | 福建永恒能源管理有限公司 | Novel pulverized coal metered pneumatic storage system |
| CN103162306A (en) * | 2011-12-14 | 2013-06-19 | 佛山市国保节能环保技术有限公司 | Coal powder long-range conveying and combustion system |
| CN203349293U (en) * | 2013-05-16 | 2013-12-18 | 昆明理工大学 | Blended pulverized coal combustion controlling device |
| CN203705972U (en) * | 2014-01-28 | 2014-07-09 | 莱芜市泰山焦化有限公司 | Automatic monitoring device for dry quenching ash bin material level |
| CN204575165U (en) * | 2015-03-14 | 2015-08-19 | 青岛青义锅炉有限公司 | A kind of pulverized coal firing boiler Pulverized Coal Bin level-sensing device |
-
2015
- 2015-03-14 CN CN201510113133.4A patent/CN105021252A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11325397A (en) * | 1998-05-18 | 1999-11-26 | Katsura Seiki Seisakusho:Kk | Remaining liquid amount measuring method for bulk supply |
| CN1344888A (en) * | 2000-11-07 | 2002-04-17 | 王敏 | Multiway dense coal power phase conveying system for industrial furnaces |
| CN201653490U (en) * | 2010-05-06 | 2010-11-24 | 攀钢集团钢铁钒钛股份有限公司 | Material level detecting system |
| CN103162306A (en) * | 2011-12-14 | 2013-06-19 | 佛山市国保节能环保技术有限公司 | Coal powder long-range conveying and combustion system |
| CN103062786A (en) * | 2013-01-25 | 2013-04-24 | 福建永恒能源管理有限公司 | Novel pulverized coal metered pneumatic storage system |
| CN203349293U (en) * | 2013-05-16 | 2013-12-18 | 昆明理工大学 | Blended pulverized coal combustion controlling device |
| CN203705972U (en) * | 2014-01-28 | 2014-07-09 | 莱芜市泰山焦化有限公司 | Automatic monitoring device for dry quenching ash bin material level |
| CN204575165U (en) * | 2015-03-14 | 2015-08-19 | 青岛青义锅炉有限公司 | A kind of pulverized coal firing boiler Pulverized Coal Bin level-sensing device |
Non-Patent Citations (4)
| Title |
|---|
| 刘蓉莉: "《火电厂动力设备》", 30 September 2014, 中国电力出版社 * |
| 吕太，王媛: "中储式制粉系统煤粉仓防爆研究与设计", 《山西电力》 * |
| 张磊: "《单元机组集控运行》", 28 February 2013, 北京：中国电力出版社 * |
| 赵宁刚: "锅炉制粉系统煤粉燃爆事故致因分析及防治对策研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765232A (en) * | 2016-12-16 | 2017-05-31 | 大唐东北电力试验研究所有限公司 | The dry deslagging controlled using resistance variation tendency locks wind system |
| CN106765232B (en) * | 2016-12-16 | 2023-04-07 | 大唐东北电力试验研究所有限公司 | Dry slag discharging and air locking system controlled by resistance variation trend |
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Application publication date: 20151104 |