CN112161293A - Optimization control method for improving boiler fuel oil automatic ignition success rate - Google Patents
Optimization control method for improving boiler fuel oil automatic ignition success rate Download PDFInfo
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- CN112161293A CN112161293A CN202010839866.7A CN202010839866A CN112161293A CN 112161293 A CN112161293 A CN 112161293A CN 202010839866 A CN202010839866 A CN 202010839866A CN 112161293 A CN112161293 A CN 112161293A
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- oil
- ignition
- control loop
- igniter
- fuel oil
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- 239000000295 fuel oil Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005457 optimization Methods 0.000 title claims abstract description 8
- 239000003921 oil Substances 0.000 claims abstract description 76
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 238000010926 purge Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 12
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000004200 deflagration Methods 0.000 abstract 1
- 238000003911 water pollution Methods 0.000 abstract 1
- 238000000889 atomisation Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
- F23Q3/006—Details
Abstract
The invention discloses an optimization control method for improving the success rate of boiler fuel oil automatic ignition, which belongs to the technical field of boiler fuel oil automatic ignition control and comprises an oil angle comprehensive control loop, an oil gun control loop, an igniter control loop, an oil angle valve control loop, a flame detector control loop and other sub-control loops. The technical scheme of the invention is that the ignition time of the igniter is properly advanced and prolonged on the basis of basically not changing the principle of the automatic ignition sequence control of the existing oil system, so as to prevent the problems of short circuit caused by water pollution in fuel oil and insufficient stable combustion energy in the early stage of ignition of an oil gun, ensure the one-time success of automatic ignition and prevent the safety risk of boiler deflagration caused by the prolongation of the automatic ignition time and fuel oil accumulation caused by unsuccessful ignition. The optimization control method has the advantages of simple logic system and convenient modification, and can effectively improve the automatic ignition success rate of the boiler fuel.
Description
Technical Field
The invention relates to an optimization control method for improving the boiler fuel oil automatic ignition success rate, and belongs to the technical field of boiler fuel oil automatic ignition control of coal-fired power plants.
Background
At present, a coal-fired power plant adopts an oil angle automatic sequence control mode on the basis of using a high-energy high-frequency electric spark igniter so as to realize full-automatic ignition.
The working principle is that the cathode and the anode discharge under the action of high voltage to generate high-frequency and high-energy electric sparks to quickly ignite the atomized light diesel oil sprayed by a special oil gun with a mechanical atomization function. If the metal cathode and anode of the igniter are shorted, no spark is generated, and therefore, during manufacture, the metal cathode and anode are separated by a layer of insulating material.
Referring to fig. 1, the fuel oil automatic ignition function is realized by an oil angle integrated control circuit, and when an oil angle automatic sequential ignition starting instruction is sent, an oil gun control circuit, an igniter control circuit, an oil valve control circuit and a flame detector control circuit are started in sequence. The control logic flow of the automatic ignition is as follows: an oil angle starting instruction is sent out, and an oil gun is propelled; after the oil gun is pushed in place, the igniter is pushed; after the igniter is pushed in place, the oil angle valve starts to be opened, and fuel oil is atomized through the atomizing sheet of the oil gun head and then is sprayed into the hearth; when the oil angle valve leaves the closed position, the igniter starts to strike fire, and the igniter automatically returns after the ignition lasts for 10 seconds; during the ignition period of the igniter, if the fuel is ignited, the flame detector continues for 2 seconds after monitoring the flame, and an ignition success signal is sent out; if the flame detector does not detect a flame or the detected flame does not last for 2 seconds, a misfire signal is issued.
Engineering practice shows that: under the common condition, water is accumulated at the bottom of a fuel storage tank or a small amount of water is often remained in a fuel conveying pipeline; when the oil angle valve starts to be opened, the water can be sprayed to the high-energy ignition head in the atomization range of the oil gun; under the action of high voltage, water molecules are ionized to generate electrons, so that the anode and the cathode of the ignition head are short-circuited and no spark can be generated; until the ignition logic flow is started for many times, the moisture in the oil is completely discharged, and the ignition can be successfully ignited after the moisture on the ignition head is dried. The resulting effect not only prolongs the auto-ignition time of the boiler, but also causes a great deal of fuel oil to be sprayed into the hearth when not burnt, and the fuel oil is accumulated at the bottom of the hearth, so that detonation is easily caused, and great safety risk is caused.
China with publication number CN 205156029U specially adapted to 2016, 04, 13 discloses an electronic automatic ignition system of a biomass boiler, which is mainly used for blowing heat generated by an electric heating wire into a boiler combustion chamber by a blower to ignite biomass. China special for 2018, 07, 17.8 discloses a boiler safety automatic ignition device with the publication number of CN 207622068U, which is mainly used for automatically judging whether a burner is in a safety state, whether the burner can be ignited or not and automatically restarting after abnormal flameout. China with publication number CN 205425008U specially used for 2016, 08 and 03 discloses a high-energy ignition device with adjustable spark frequency, which mainly selects proper spark frequency according to the working condition requirements of fuels with different properties, thereby ensuring the ignition success rate while ensuring energy conservation. China special for 2019, 08 and 23 months and with the publication number of CN 209295193U discloses a boiler ignition oil saving device, compressed air atomization is mainly adopted, and the atomization effect is remarkably improved compared with mechanical atomization.
Generally, the current technical scheme does not relate to the problems that water in fuel oil pollutes an ignition head at the initial stage of ignition, so that an electrode is short-circuited and ignition cannot be carried out, the automatic ignition time is prolonged, and a large amount of fuel oil is accumulated.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an optimized control method which is reasonable in design, simple, convenient and feasible and has good effect and can improve the automatic ignition success rate of boiler fuel.
The technical scheme adopted by the invention for solving the problems is as follows: an optimization control method for improving the success rate of automatic ignition of boiler fuel oil is characterized by comprising an oil angle comprehensive control loop, an oil gun control loop, an igniter control loop, an oil angle valve control loop, a flame detector control loop and other sub-control loops; the oil angle comprehensive control loop sends an oil angle starting instruction, and an oil gun starts to advance after the oil gun control loop receives the instruction; after the oil gun is pushed to the proper position, a signal is sent to an igniter control loop, and the igniter starts to push; after the igniter is pushed to the right position, the igniter starts to strike fire, and after 3 seconds of delay, a signal is sent to the oil angle valve control loop, and the oil angle valve starts to open; in the ignition process of fuel oil, a flame signal emitted by oil combustion is detected by a flame detector control loop, and after the flame signal lasts for 2 seconds, the oil angle comprehensive control loop judges that the oil angle is successfully ignited and emits an ignition success signal.
Furthermore, in an oil angle ignition control flow, if the feedback signal of any sub-control loop is not verified or the flame signal cannot be maintained for 2 seconds, the oil angle comprehensive control loop sends an ignition failure signal; and starting a purging program by the oil angle comprehensive control loop, and restarting an ignition program according to needs after purging is finished.
Preferably, the igniter is pushed into position, the igniter starts firing and lasts for 3 seconds before the oil angle valve starts to open.
Preferably, the ignition time of the igniter is set to be 15-25 seconds, and ignition energy sources are continuously provided for a period of time at the early stage of fuel ignition so as to ensure stable combustion of fuel flame.
Compared with the prior art, the invention has the following advantages and effects:
1. the existing method that the oil angle valve is opened first and then the ignition is changed into the method that the igniter is ignited first for 3 seconds and then the oil angle valve is opened. After the control sequence is adjusted, the electrodes can be preheated after being fully ignited and discharged, a high-temperature environment is generated, the ignition head is kept dry, and moisture in fuel oil is not easy to attach to the electrodes, so that the problem that the electrodes cannot be ignited due to short circuit between the cathode and the anode of the ignition head is solved.
2. The ignition time of the igniter is prolonged from the existing 10 seconds to 15-25 seconds, so that the ignition energy can be continuously supplied under the condition that the initial combustion of the oil valve is unstable, and the oil gun is prevented from frequently extinguishing.
Drawings
FIG. 1 is a schematic diagram of a control flow of a prior art boiler fuel auto-ignition sequence.
FIG. 2 is a schematic flow chart of the optimized control of the fuel oil auto-ignition sequence of the boiler in the present invention.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Referring to fig. 2, an optimized control method for improving the success rate of automatic ignition of boiler fuel includes an oil angle integrated control loop, an oil gun control loop, and sub-control loops such as an igniter control loop, an oil angle valve control loop, and a flame detector control loop.
The oil angle comprehensive control loop sends an oil angle starting instruction, and an oil gun starts to advance after the oil gun control loop receives the instruction; after the oil gun is pushed to the proper position, a signal is sent to an igniter control loop, and the igniter starts to push; after the igniter is pushed to the right position, the igniter starts to strike fire, and after 3 seconds of delay, a signal is sent to the oil angle valve control loop, and the oil angle valve starts to open; in the ignition process of fuel oil, a flame signal emitted by oil combustion is detected by a flame detector control loop, and after the flame signal lasts for 2 seconds, the oil angle comprehensive control loop judges that the oil angle is successfully ignited and emits an ignition success signal.
Specifically, in an oil angle ignition control flow, if a feedback signal of any sub-control loop is not verified or a flame signal cannot be maintained for 2 seconds, an oil angle comprehensive control loop sends an ignition failure signal; and starting a purging program by the oil angle comprehensive control loop, and restarting an ignition program according to needs after purging is finished.
Specifically, the igniter was pushed into position, the igniter started firing and continued for 3 seconds before the oil angle valve started opening.
Specifically, the ignition time of the igniter is set to be 15-25 seconds, and ignition energy sources are continuously provided for a period of time at the early stage of fuel ignition so as to guarantee stable combustion of fuel flame.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (4)
1. An optimization control method for improving the success rate of automatic ignition of boiler fuel oil is characterized by comprising an oil angle comprehensive control loop, an oil gun control loop, an igniter control loop, an oil angle valve control loop, a flame detector control loop and other sub-control loops; the oil angle comprehensive control loop sends an oil angle starting instruction, and an oil gun starts to advance after the oil gun control loop receives the instruction; after the oil gun is pushed to the proper position, a signal is sent to an igniter control loop, and the igniter starts to push; after the igniter is pushed to the right position, the igniter starts to strike fire, and after 3 seconds of delay, a signal is sent to the oil angle valve control loop, and the oil angle valve starts to open; in the ignition process of fuel oil, a flame signal emitted by oil combustion is detected by a flame detector control loop, and after the flame signal lasts for 2 seconds, the oil angle comprehensive control loop judges that the oil angle is successfully ignited and emits an ignition success signal.
2. The optimization control method for improving the boiler fuel oil automatic ignition success rate according to the claim 1, characterized in that in the oil angle ignition control flow, the feedback signal of any sub-control loop is not verified or the flame signal can not be maintained for 2 seconds, and the oil angle comprehensive control loop sends out an ignition failure signal; and starting a purging program by the oil angle comprehensive control loop, and restarting an ignition program according to needs after purging is finished.
3. The optimal control method for improving the boiler fuel oil automatic ignition success rate according to the claim 1, characterized in that, the igniter is pushed to the right position, the igniter starts to ignite and lasts for 3 seconds, and the oil angle valve starts to open.
4. The optimal control method for improving the boiler fuel oil automatic ignition success rate according to the claim 1, is characterized in that the ignition time of an igniter is set to be 15-25 seconds, and ignition energy is continuously provided for a period of time in the early stage of fuel oil ignition so as to ensure the stable combustion of fuel oil flame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839866.7A CN112161293A (en) | 2020-08-19 | 2020-08-19 | Optimization control method for improving boiler fuel oil automatic ignition success rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839866.7A CN112161293A (en) | 2020-08-19 | 2020-08-19 | Optimization control method for improving boiler fuel oil automatic ignition success rate |
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| CN112161293A true CN112161293A (en) | 2021-01-01 |
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| CN202010839866.7A Pending CN112161293A (en) | 2020-08-19 | 2020-08-19 | Optimization control method for improving boiler fuel oil automatic ignition success rate |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT7967085A0 (en) * | 1979-01-16 | 1979-01-16 | Iao Industrie Riunite Spa | ELECTRIC CIGARETTE LIGHTER FOR VEHICLES |
| FR2429971A1 (en) * | 1978-06-29 | 1980-01-25 | Vaillant Sarl | IGNITION DEVICE |
| CN1550715A (en) * | 2003-03-19 | 2004-12-01 | 丹福斯有限公司 | A method and device for igniting an oil burner |
| CN101619858A (en) * | 2009-08-06 | 2010-01-06 | 广东电网公司电力科学研究院 | Automatic control method for boiler oil burner and device thereof |
| CN102829487A (en) * | 2012-09-25 | 2012-12-19 | 鞍钢股份有限公司 | Ignition device and ignition method for sinter pot test |
| CN104479759A (en) * | 2014-12-19 | 2015-04-01 | 刘晓军 | Method for enhancing ignition success rate of gasification furnace start burner |
| CN107726362A (en) * | 2017-09-19 | 2018-02-23 | 河钢股份有限公司邯郸分公司 | A kind of closed combustion furnace method for controlling automatic ignition |
| CN108800203A (en) * | 2018-07-05 | 2018-11-13 | 济南市琦泉热电有限责任公司 | The oil ignition system and method for circulating fluidized bed boiler |
| CN110360594A (en) * | 2019-06-19 | 2019-10-22 | 张勇 | A kind of preheating igniting method and device for electric melting furnace |
| CN111765631A (en) * | 2020-06-24 | 2020-10-13 | 北京高鑫伟业科技有限公司 | Novel gas heating boiler and ignition method thereof |
-
2020
- 2020-08-19 CN CN202010839866.7A patent/CN112161293A/en active Pending
Patent Citations (10)
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|---|---|---|---|---|
| FR2429971A1 (en) * | 1978-06-29 | 1980-01-25 | Vaillant Sarl | IGNITION DEVICE |
| IT7967085A0 (en) * | 1979-01-16 | 1979-01-16 | Iao Industrie Riunite Spa | ELECTRIC CIGARETTE LIGHTER FOR VEHICLES |
| CN1550715A (en) * | 2003-03-19 | 2004-12-01 | 丹福斯有限公司 | A method and device for igniting an oil burner |
| CN101619858A (en) * | 2009-08-06 | 2010-01-06 | 广东电网公司电力科学研究院 | Automatic control method for boiler oil burner and device thereof |
| CN102829487A (en) * | 2012-09-25 | 2012-12-19 | 鞍钢股份有限公司 | Ignition device and ignition method for sinter pot test |
| CN104479759A (en) * | 2014-12-19 | 2015-04-01 | 刘晓军 | Method for enhancing ignition success rate of gasification furnace start burner |
| CN107726362A (en) * | 2017-09-19 | 2018-02-23 | 河钢股份有限公司邯郸分公司 | A kind of closed combustion furnace method for controlling automatic ignition |
| CN108800203A (en) * | 2018-07-05 | 2018-11-13 | 济南市琦泉热电有限责任公司 | The oil ignition system and method for circulating fluidized bed boiler |
| CN110360594A (en) * | 2019-06-19 | 2019-10-22 | 张勇 | A kind of preheating igniting method and device for electric melting furnace |
| CN111765631A (en) * | 2020-06-24 | 2020-10-13 | 北京高鑫伟业科技有限公司 | Novel gas heating boiler and ignition method thereof |
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| Title |
|---|
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Application publication date: 20210101 |
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