CN114046528A - Boiler fuel temperature control method - Google Patents
Boiler fuel temperature control method Download PDFInfo
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- CN114046528A CN114046528A CN202111290036.4A CN202111290036A CN114046528A CN 114046528 A CN114046528 A CN 114046528A CN 202111290036 A CN202111290036 A CN 202111290036A CN 114046528 A CN114046528 A CN 114046528A
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- fuel temperature
- value
- time
- boiler
- rotating speed
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- 239000000446 fuel Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 238000012937 correction Methods 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000012935 Averaging Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 230000001276 controlling effect Effects 0.000 claims abstract description 4
- 239000013256 coordination polymer Substances 0.000 claims description 12
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/14—Details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/02—Liquid fuel
- F23K5/14—Details thereof
- F23K5/147—Valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/005—Regulating fuel supply using electrical or electromechanical means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/025—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electrical or electromechanical means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention aims to provide a boiler fuel temperature control method, which is characterized by comprising the following steps: the method comprises the following steps: determining a fuel temperature range and a target value SP; acquiring a boiler fuel temperature value T at the moment T by adopting 2 fuel temperature monitoring sensors1(T) and T2(t); the fuel temperature value T at the moment T1(T) and T2(T) averaging to obtain the average value T of the fuel temperatureV(t); acquiring the rotating speed R (t) of the steam turbine set at the time t, and converting the rotating speed R (t) into a corrected value Q (t) through linearization processing; calculating the difference between the average value TV (t) of the fuel temperature at the time t and the target value SP, and then taking an absolute value to obtain a deviation value E (t); converting the deviation value E (t) into a proportionality coefficient C through linearization processingP(t) and the differential coefficient CD(t)(ii) a And calculating and outputting the opening K (t) of the fuel temperature regulating valve according to the following formula, and controlling the fuel temperature regulating valve in real time so as to further realize the control of the fuel temperature. The fuel temperature is monitored by adopting 2 fuel temperature monitoring sensors, so that the fuel temperature measurement error can be reduced; the control accuracy can be improved by using the rotating speed of the steam turbine unit as a correction value.
Description
Technical Field
The invention relates to a boiler control method, in particular to a boiler fuel temperature control method.
Background
The oil-fired boiler can generate larger heat energy and is widely applied to the fields of petrifaction, ships, heating and the like. The fuel oil used by the oil-fired boiler is sprayed out from a supply pipeline through an oil sprayer and is combusted in the combustor, and the water is burnt into steam to push the steam turbine unit to do work, so that the industrial production is developed. The oil in the fuel line must be heated to a certain temperature to be fully combusted to achieve maximum benefit. Otherwise, the combustion effect can not be achieved, and resource waste is easily caused. Particularly, under the condition of low temperature, fuel oil is easy to condense and cannot be sprayed out, so that the boiler cannot work, and even danger is easy to occur. Therefore, control of the fuel temperature is important.
Disclosure of Invention
The invention aims to provide a boiler fuel temperature control method capable of solving the problem of boiler fuel temperature control.
The purpose of the invention is realized as follows:
the invention discloses a boiler fuel temperature control method, which is characterized by comprising the following steps:
(1) determining a fuel temperature range and a target value SP according to historical data of the boiler fuel temperature;
(2) acquiring a boiler fuel temperature value T at the moment T by adopting 2 fuel temperature monitoring sensors1(T) and T2(t)；
(3) The fuel temperature value T at the moment T1(T) and T2(T) averaging to obtain the average value T of the fuel temperatureV(t)：
(4) Acquiring the rotating speed R (t) of the steam turbine set at the time t, and converting the rotating speed R (t) into a corrected value Q (t) through linearization processing;
(5) and (3) subtracting the average value TV (t) of the fuel temperature at the time t from the target value SP, and then taking an absolute value to obtain a deviation value E (t):
E(t)＝|TV(t)-SP|；
(6) converting the deviation value E (t) into a proportionality coefficient C through linearization processingP(t) and the differential coefficient CD(t)；
(7) Calculating and outputting the opening K (t) of the fuel temperature regulating valve according to the following formula, and regulating the fuel temperature in real time
Control is carried out, and then fuel temperature control is realized:
K(t)＝CP(t)×E(t)+CD(t)×[E(t)-E(t-1)]+Q(t)
wherein, CP(t)、CDAnd (t), E (t), Q (t) and E (t-1) are respectively a proportional coefficient, a differential coefficient, a deviation value and a correction value at the time t, and the deviation value at the time t-1 is shown in the specification.
The invention has the advantages that:
1. the invention adopts 2 fuel temperature monitoring sensors to monitor the fuel temperature, and can reduce the measurement error of the fuel temperature.
2. The invention takes the rotating speed of the steam turbine set as a correction value, and can improve the control precision.
3. The invention can quickly and accurately control the fuel temperature through real-time operation.
4. The invention has simple operation and convenient realization.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
referring to fig. 1, the technical scheme adopted by the invention is a boiler fuel temperature control method, which comprises the following steps:
(1) and determining the fuel temperature range and the target value SP according to the historical data of the fuel temperature of the boiler.
(2) Acquiring a boiler fuel temperature value T at the moment T by adopting 2 fuel temperature monitoring sensors1(T) and T2(t)。
(3) Fuel temperature at t momentValue T1(T) and T2(T) averaging to obtain the average value T of the fuel temperatureV(t)。
(4) And acquiring the rotating speed R (t) of the steam turbine set at the time t, and converting the rotating speed R (t) into a correction value Q (t) through linearization processing.
| Turboset speed R (t) | Correction value Q (t) |
| R(1) | Q(1) |
| … | … |
| R(n) | Q(n) |
(5) Averaging the fuel temperature T at the moment TV(t) taking the absolute value after the difference between the target value SP and the value SP to obtain a deviation value E (t).
E(t)＝|TV(t)-SP| (2)
(6) Converting the deviation value E (t) into a proportionality coefficient C through linearization processingP(t) and the differential coefficient CD(t)。
| Deviation value E (t) | Coefficient of proportionality CP(t) | Coefficient of differentiation CD(t) |
| E(1) | CP(1) | CD(1) |
| E(2) | CP(2) | CD(2) |
| … | … | … |
| E(n) | CP(n) | CD(n) |
(7) And calculating and outputting the opening K (t) of the fuel temperature regulating valve according to the following formula, and controlling the fuel temperature regulating valve in real time so as to realize the control of the fuel temperature.
K(t)＝CP(t)×E(t)+CD(t)×[E(t)-E(t-1)]+Q(t) (3)
Wherein, CP(t)、CDAnd (t), E (t), Q (t) and E (t-1) are respectively a proportional coefficient, a differential coefficient, a deviation value and a correction value at the time t, and the deviation value at the time t-1 is shown in the specification.
The practical problems are solved by the method of the invention:
the existing boiler system composed of boiler and steam turbine set controls the fuel temperature.
(1) According to the historical data of the boiler fuel temperature, the fuel temperature range is determined to be 0.0-160.0 ℃, and the target value SP is 80.0 ℃.
(2) Acquiring a boiler fuel temperature value T at the moment T by adopting 2 fuel temperature monitoring sensors1(T) 65.5 ℃ C, T2(t) 65.9 ℃.
(3) The fuel temperature value T at the moment T1(T) and T2(T) averaging to obtain the average value T of the fuel temperatureV(t)。
(4) And acquiring the rotating speed R (t) of the steam turbine set at the time t, and converting the rotating speed R (t) into a correction value Q (t) through linearization processing.
| Turboset speed R (t) | Correction value Q (t) |
| 0.0 | 0.0 |
| … | … |
| 300r/min | 4.0 |
When the rotating speed R (t) of the steam turbine set at the time t is 200r/min, a corrected value Q (t) is obtained by contrasting the upper table and is 2.70.
(5) Averaging the fuel temperature T at the moment TV(t) taking the absolute value after the difference between the target value SP and the value, and obtaining a deviation value E (t))。
E(t)＝|TV(t)-SP|＝|65.7-80|＝14.3℃
(6) Obtaining a proportionality coefficient C by linearizing the deviation value E (t)P(t) and the differential coefficient CD(t)。
The table is compared to obtain the proportionality coefficient CP(t) is 0.18 and a differential coefficient CD(t) was 0.04.
(7) And (4) calculating and outputting the opening K (t) of the fuel temperature regulating valve according to a formula (3), and controlling the fuel temperature regulating valve in real time so as to realize the control of the fuel temperature.
K(t)＝CP(t)×E(t)+CD(t)×[E(t)-E(t-1)]+Q(t)
＝0.18×14.3+0.04×14.3+2.7
＝5.8。
Claims (1)
1. A boiler fuel temperature control method is characterized in that:
(1) determining a fuel temperature range and a target value SP according to historical data of the boiler fuel temperature;
(2) acquiring a boiler fuel temperature value T at the moment T by adopting 2 fuel temperature monitoring sensors1(T) and T2(t)；
(3) The fuel temperature value T at the moment T1(T) and T2(T) averaging to obtain the average value T of the fuel temperatureV(t)：
(4) Acquiring the rotating speed R (t) of the steam turbine set at the time t, and converting the rotating speed R (t) into a corrected value Q (t) through linearization processing;
(5) and (3) subtracting the average value TV (t) of the fuel temperature at the time t from the target value SP, and then taking an absolute value to obtain a deviation value E (t):
E(t)＝|TV(t)-SP|；
(6) converting the deviation value E (t) into a proportionality coefficient C through linearization processingP(t) and the differential coefficient CD(t)；
(7) And (3) calculating and outputting the opening K (t) of the fuel temperature regulating valve according to the following formula, and controlling the fuel temperature regulating valve in real time so as to realize fuel temperature control:
K(t)＝CP(t)×E(t)+CD(t)×[E(t)-E(t-1)]+Q(t)
wherein, CP(t)、CDAnd (t), E (t), Q (t) and E (t-1) are respectively a proportional coefficient, a differential coefficient, a deviation value and a correction value at the time t, and the deviation value at the time t-1 is shown in the specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111290036.4A CN114046528A (en) | 2021-11-02 | 2021-11-02 | Boiler fuel temperature control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111290036.4A CN114046528A (en) | 2021-11-02 | 2021-11-02 | Boiler fuel temperature control method |
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| Publication Number | Publication Date |
|---|---|
| CN114046528A true CN114046528A (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111290036.4A Pending CN114046528A (en) | 2021-11-02 | 2021-11-02 | Boiler fuel temperature control method |
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| CN (1) | CN114046528A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0842801A (en) * | 1994-07-29 | 1996-02-16 | Mitsubishi Heavy Ind Ltd | Method for controlling quantity of exhaust gas from boiler |
| JPH1097325A (en) * | 1996-09-24 | 1998-04-14 | Ishikawajima Harima Heavy Ind Co Ltd | Steam temperature control method and apparatus in pressurized fluidized bed boiler |
| KR20030054484A (en) * | 2001-12-26 | 2003-07-02 | 주식회사 포스코 | A method for controlling a dcs type fuel supply to a boiler |
| CN104534503A (en) * | 2014-12-23 | 2015-04-22 | 云南航天工业有限公司 | Automatic altitude and temperature correcting control method for diesel combustor |
| CN105423334A (en) * | 2015-12-31 | 2016-03-23 | 中冶南方工程技术有限公司 | Intelligent control system and method for combustion process of hot-blast stove |
| CN105910131A (en) * | 2016-06-16 | 2016-08-31 | 河北工程大学 | Fuel gas temperature control method and system of high-temperature combustion system |
| CN110207133A (en) * | 2018-12-31 | 2019-09-06 | 上海康恒环境股份有限公司 | A kind of incinerator fire box temperature precise controlling method |
| CN111779585A (en) * | 2020-06-30 | 2020-10-16 | 无锡威孚高科技集团股份有限公司 | Control method, device and system of engine for power generation |
-
2021
- 2021-11-02 CN CN202111290036.4A patent/CN114046528A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0842801A (en) * | 1994-07-29 | 1996-02-16 | Mitsubishi Heavy Ind Ltd | Method for controlling quantity of exhaust gas from boiler |
| JPH1097325A (en) * | 1996-09-24 | 1998-04-14 | Ishikawajima Harima Heavy Ind Co Ltd | Steam temperature control method and apparatus in pressurized fluidized bed boiler |
| KR20030054484A (en) * | 2001-12-26 | 2003-07-02 | 주식회사 포스코 | A method for controlling a dcs type fuel supply to a boiler |
| CN104534503A (en) * | 2014-12-23 | 2015-04-22 | 云南航天工业有限公司 | Automatic altitude and temperature correcting control method for diesel combustor |
| CN105423334A (en) * | 2015-12-31 | 2016-03-23 | 中冶南方工程技术有限公司 | Intelligent control system and method for combustion process of hot-blast stove |
| CN105910131A (en) * | 2016-06-16 | 2016-08-31 | 河北工程大学 | Fuel gas temperature control method and system of high-temperature combustion system |
| CN110207133A (en) * | 2018-12-31 | 2019-09-06 | 上海康恒环境股份有限公司 | A kind of incinerator fire box temperature precise controlling method |
| CN111779585A (en) * | 2020-06-30 | 2020-10-16 | 无锡威孚高科技集团股份有限公司 | Control method, device and system of engine for power generation |
Non-Patent Citations (4)
| Title |
|---|
| YUXIN ZHAO: "《A novel method of fleet deployment based on route risk evaluation》", 《INFORMATION SCIENCES》 * |
| 梅升;郝德锋;: "配循环流化床锅炉的300MW机组控制策略", 热力发电, no. 07 * |
| 白钰: "《电站甩负荷情况下动力系统的协调控制策略研究》", 《热能动力工程》, vol. 36, no. 1 * |
| 金维武;陈才旺;何冬林;田明全;: "某电站燃气轮机温控系统故障分析", 热能动力工程, no. 05 * |
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