CN103223371A - Coal mill air duct heating device - Google Patents
Coal mill air duct heating device Download PDFInfo
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- CN103223371A CN103223371A CN2013101286529A CN201310128652A CN103223371A CN 103223371 A CN103223371 A CN 103223371A CN 2013101286529 A CN2013101286529 A CN 2013101286529A CN 201310128652 A CN201310128652 A CN 201310128652A CN 103223371 A CN103223371 A CN 103223371A
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- oil
- coal pulverizer
- signal input
- air channel
- air duct
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Abstract
The invention discloses a coal mill air duct heating device, which includes an electronic igniter and an oil gun deep in a coal mill air duct. The air inlet and oil inlet of the oil gun are respectively connected to a gas source and an oil source through an atomizing gas electromagnetic quick closing valve and a fuel oil electromagnetic quick closing valve. The device also includes a PLC. The first signal output end, the second signal output end and the third signal output end of the PLC are respectively connected to the signal input ends of the electronic igniter, the atomizing gas electromagnetic quick closing valve and the fuel oil electromagnetic quick closing valve. The first signal input end and the second signal input end of the PLC are respectively in connection with an air volume probe and a temperature probe disposed in the coal mill air duct. The coal mill air duct heating device disclosed in the invention has the characteristics of simple structure, quick start, low cost, fuel oil saving, and high degree of automation, and can be widely applied in the technical field of thermal power generation.
Description
Technical field
The present invention relates to the thermal power generating technology field, particularly relate to a kind of coal pulverizer air channel heating apparatus.
Background technology
Domestic heat power plant boiler all obtains heat by burning coal, because the burning-point of coal is higher, so generally all can use the light diesel fuel coal dust that ignites during ignition of the boiler.At present, the used coal dust of boiler combustion prepares by coal pulverizer, and coal pulverizer need have at least 150 ℃ hot blast can start powder process, this just caused the boiler startup needs a large amount of use light diesel fuel, just start coal pulverizer powder process and in boiler, drop into coal dust when hot blast temperature arrives more than 150 ℃ by the time, coal dust after the burning progressively substitutes light diesel fuel, at last until the supply of cutting off light diesel fuel.In this course, can a large amount of consume the more expensive light diesel fuels of prices, not only cause a large amount of consumption of fuel resource, be unfavorable for that also the thermal power plant controls cost.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of above-mentioned background technology, a kind of coal pulverizer air channel heating apparatus be provided, have simple in structure, start fast, cost is low, save fuel oil, characteristics that automaticity is high.
A kind of coal pulverizer provided by the invention air channel heating apparatus, comprise the ignition and the oil gun that go deep in the coal pulverizer air channel, the air inlet of described oil gun links to each other with oil sources with source of the gas with the electromagnetic fuel fast valve by atomization gas electromagnetism fast valve respectively with oil-in, also comprise PLC, first signal output part of described PLC, secondary signal output and the 3rd signal output part respectively with ignition, the signal input part of atomization gas electromagnetism fast valve and electromagnetic fuel fast valve links to each other, first signal input part of described PLC and secondary signal input respectively be located at the coal pulverizer air channel in the air quantity probe link to each other with temp probe.
In technique scheme, also comprise the flame detecting probe of being located in the coal pulverizer air channel, described flame detecting probe links to each other with the 3rd signal input part of described PLC.
In technique scheme, the muzzle of described oil gun is fixed with stabilizer.
Coal pulverizer of the present invention air channel heating apparatus, have following beneficial effect: this device is the wind-warm syndrome of heating coal pulverizer directly, the coal-grinding function can be started at any time, and the wind-warm syndrome that needn't wait until whole boiler could start when reaching 150 ℃, can drop into coal dust in advance in boiler, substitute light fuel oil with coal dust in advance, reduced dependence to the required light fuel oil of the coal dust that ignites, not only simple in structure, start soon, reduced cost, saved fuel oil, and the automaticity height.
Description of drawings
Fig. 1 is the structural representation of coal pulverizer of the present invention air channel heating apparatus.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples, but this embodiment should not be construed as limitation of the present invention.
Referring to Fig. 1, coal pulverizer of the present invention air channel heating apparatus comprises ignition 2, oil gun 3, atomization gas electromagnetism fast valve 4, electromagnetic fuel fast valve 5, PLC6, air quantity probe 7, temp probe 8, flame detecting probe 9 and stabilizer 10.
Described ignition 2 and oil gun 3 go deep in the coal pulverizer air channel 1, and the air inlet of described oil gun 3 links to each other with the oil sources (not shown) with the source of the gas (not shown) with electromagnetic fuel fast valve 5 by atomization gas electromagnetism fast valve 4 respectively with oil-in.Described PLC6(programmable logic controller (PLC)) first signal output part 6.1, secondary signal output 6.2 and the 3rd signal output part 6.3 link to each other with the signal input part of ignition 2, atomization gas electromagnetism fast valve 4 and electromagnetic fuel fast valve 5 respectively, first signal input part 6.4 of described PLC6 and secondary signal input 6.5 respectively be located at coal pulverizer air channel 1 in air quantity probe 7 link to each other with temp probe 8.
Described flame detecting probe 9 is located in the coal pulverizer air channel 1, and flame detecting probe 9 links to each other with the 3rd signal input part 6.6 of described PLC6.The muzzle of described oil gun 3 is fixed with stabilizer 10.
The job step of described coal pulverizer air channel heating apparatus is as follows: when the coal pulverizer (not shown) need start powder process, open total air door (not shown) in coal pulverizer air channel 1 and blow in coal pulverizer air channel 1.When detecting air quantity, air quantity probe 7 surpasses setting value, when simultaneous temperature probe 8 detects wind-warm syndrome and also is lower than 150 ℃---satisfy the condition that can light a fire and heat, at this moment start PLC6, PLC6 at first unlocking electronic igniter 2 strikes sparks, and then open atomization gas electromagnetism fast valve 4 and electromagnetic fuel fast valve 5, fuel oil and atomizing air sent in the oil gun 3 atomize, the fuel oil mist of oil that has atomized through oil gun 3 is ignited by the electric spark of ignition 2, after the flame of oil inflame is detected by flame detecting probe 9, stabilizer 10 is maintained the statusquo and is kept burning, finishes an ignition procedure; Do not detect flame as flame detecting probe 9, showing that igniting is unsuccessful, PLC6 closes electromagnetic fuel fast valve 5 immediately, stops igniting, wait for the maintenance personal ascertain the reason after point again.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
The content that is not described in detail in this specification belongs to this area professional and technical personnel's known prior art.
Claims (3)
1. coal pulverizer air channel heating apparatus, comprise the ignition (2) and the oil gun (3) that go deep in the coal pulverizer air channel (1), the air inlet of described oil gun (3) links to each other with oil sources with source of the gas with electromagnetic fuel fast valve (5) by atomization gas electromagnetism fast valve (4) respectively with oil-in, it is characterized in that: also comprise PLC(6), described PLC(6) first signal output part (6.1), secondary signal output (6.2) and the 3rd signal output part (6.3) respectively with ignition (2), atomization gas electromagnetism fast valve (4) links to each other described PLC(6 with the signal input part of electromagnetic fuel fast valve (5)) first signal input part (6.4) and secondary signal input (6.5) respectively be located at coal pulverizer air channel (1) in air quantity probe (7) link to each other with temp probe (8).
2. coal pulverizer according to claim 1 air channel heating apparatus is characterized in that: also comprise the flame detecting probe of being located in the coal pulverizer air channel (1) (9), described flame detecting probe (9) and described PLC(6) the 3rd signal input part (6.6) link to each other.
3. coal pulverizer according to claim 1 and 2 air channel heating apparatus is characterized in that: the muzzle of described oil gun (3) is fixed with stabilizer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128652.9A CN103223371B (en) | 2013-04-15 | 2013-04-15 | A kind of coal pulverizer air channel heating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128652.9A CN103223371B (en) | 2013-04-15 | 2013-04-15 | A kind of coal pulverizer air channel heating apparatus |
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| CN103223371A true CN103223371A (en) | 2013-07-31 |
| CN103223371B CN103223371B (en) | 2015-09-02 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01207147A (en) * | 1988-02-12 | 1989-08-21 | Mitsubishi Heavy Ind Ltd | Blasting device for coal crusher |
| CN2337408Y (en) * | 1998-07-10 | 1999-09-08 | 牡丹江电力技术研究所 | Directly-firing coal burner |
| CN201196485Y (en) * | 2008-03-25 | 2009-02-18 | 中国计量学院 | Strong turbulent motion ventiduct type combustion device used for micro-oil ignition |
| CN102032592A (en) * | 2009-09-27 | 2011-04-27 | 烟台龙源电力技术股份有限公司 | Coal dust ignition system and control method thereof |
| CN202494130U (en) * | 2012-03-10 | 2012-10-17 | 郴州市三联路面机械有限责任公司 | Automation control coal powder burning machine for bituminous mixing plant |
| CN203264833U (en) * | 2013-04-15 | 2013-11-06 | 刘冰玉 | Air channel heating device for coal mill |
-
2013
- 2013-04-15 CN CN201310128652.9A patent/CN103223371B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01207147A (en) * | 1988-02-12 | 1989-08-21 | Mitsubishi Heavy Ind Ltd | Blasting device for coal crusher |
| CN2337408Y (en) * | 1998-07-10 | 1999-09-08 | 牡丹江电力技术研究所 | Directly-firing coal burner |
| CN201196485Y (en) * | 2008-03-25 | 2009-02-18 | 中国计量学院 | Strong turbulent motion ventiduct type combustion device used for micro-oil ignition |
| CN102032592A (en) * | 2009-09-27 | 2011-04-27 | 烟台龙源电力技术股份有限公司 | Coal dust ignition system and control method thereof |
| CN202494130U (en) * | 2012-03-10 | 2012-10-17 | 郴州市三联路面机械有限责任公司 | Automation control coal powder burning machine for bituminous mixing plant |
| CN203264833U (en) * | 2013-04-15 | 2013-11-06 | 刘冰玉 | Air channel heating device for coal mill |
Non-Patent Citations (5)
| Title |
|---|
| 吕建军: "小油枪点火及稳燃技术在330MW机组烟煤锅炉上的应用", 《全国火电大机组（300MW级）竞赛第37届年会论文集 》, 1 May 2008 (2008-05-01), pages 157 - 168 * |
| 张春菊: "气化小油枪点火技术的应用研究", 《太原理工大学学报》, vol. 39, 15 May 2008 (2008-05-15), pages 171 - 174 * |
| 李鹏: "微油点火稳燃技术在华电红雁池发电厂的应用", 《全国火电100-200MW级机组技术协作会2009年年会论文集 》, 1 July 2009 (2009-07-01), pages 173 - 176 * |
| 王开柱: "少油点火在国产超临界600MW机组的应用", 《全国火电600MW机组技术协作会第13届年会论文集》, 4 May 2009 (2009-05-04), pages 700 - 707 * |
| 金非等: "微油点火技术在直吹式制粉系统锅炉上的应用", 《中国电力》, no. 9, 5 September 2009 (2009-09-05), pages 66 - 69 * |
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| CN103223371B (en) | 2015-09-02 |
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Effective date of registration: 20170523 Address after: Optics Valley No. 303 Optics Valley Wuhan 430000 core center of East Lake New Technology Development Zone, Hubei province road three 4-02-703 room Patentee after: Wuhan Siqi Environmental Protection Technology Co., Ltd. Address before: 430080 Hubei Province, Wuhan City Qingshan District of Wuhan City, the forty-ninth middle school (high school) Patentee before: Liu Bingyu |