CN105805722A - Boiler pressure monitoring method and system - Google Patents
Boiler pressure monitoring method and system Download PDFInfo
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- CN105805722A CN105805722A CN201410842706.2A CN201410842706A CN105805722A CN 105805722 A CN105805722 A CN 105805722A CN 201410842706 A CN201410842706 A CN 201410842706A CN 105805722 A CN105805722 A CN 105805722A
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Abstract
The invention discloses a boiler pressure monitoring method and system. The boiler pressure monitoring method comprises the steps that the main steam pressure of a boiler is detected; whether the main steam pressure exceeds a first preset value or not is judged; if the main steam pressure exceeds the first preset value, the main steam pressure is used as a parameter, and a pressure value by which the pressure of a primary wind pipe needs to be adjusted and a load value by which the load of a unit needs to be adjusted are calculated according to the fuzzy control theory; and the pressure of the primary wind pipe is adjusted according to the pressure value, and the load of the unit is adjusted according to the load valve. The main steam pressure of the boiler is used as the parameter, and the pressure value and the load value needing to be adjusted are calculated instead of operating by the aid of manual work, so that the accuracy of the adjustment amount is improved, and the human resources are saved.
Description
Technical field
The present invention relates to power plant boiler control field, particularly relate to a kind of boiler pressure monitoring method and system.
Background technology
In the power supply mode that the many area thermal power generation of China are main.In recent years, along with the development of science and technology, the power consumption of society's every field is also greatly increased.Therefore, at needs, generating set is carried out increase-volume.At present, boiler, while generating set increase-volume, is not but adjusted by many power plants, when unit load exceedes certain value, owing to ature of coal fluctuation or burning of coal situation change, often cause boiler side superpressure, and then bring very big hidden danger to the safe operation of generating set.
For pressure release as early as possible after boiler superpressure, often by reducing coal amount manually, reduce primary air fan and exert oneself, even need to allow turbine main control adjust boiler pressure, open high-pressure governing valve pressure release.But the mode manually adjusted not only adjustment amount inaccuracy, and waste human resources.
Summary of the invention
It is an object of the invention to provide the monitoring method and system of a kind of boiler pressure, to realize accurately adjusting boiler pressure and saving the purpose of human resources.
A kind of boiler pressure monitoring method, including:
Detect the main steam pressure of described boiler；
Judge that whether described main steam pressure is more than the first preset value；
If described main steam pressure exceedes described first preset value, then using described main steam pressure as parameter, calculate according to fuzzy control theory and need the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted；
Adjust described wind main-piping pressure according to described force value and adjust described unit load according to described load value.
Preferably, also include:
The first stage pressure of detection steam turbine；
Judge that whether described first stage pressure is more than the second preset value；
If described first stage pressure is more than the second preset value, then the master controller of block increase steam turbine.
Preferably, also include: if described main steam pressure exceedes described first preset range or described first stage pressure more than the second preset range, then report to the police.
Preferably, also include: show the main steam pressure of described boiler.
Preferably, also include: show the first stage pressure of described steam turbine.
A kind of boiler pressure monitoring system, including:
First detection unit, for detecting the main steam pressure of described boiler；
First judging unit, is used for judging that whether described main steam pressure is more than the first preset value；
Computing unit, if exceeding described first preset value for described main steam pressure, then using described main steam pressure as parameter, calculating according to fuzzy control theory and needs the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted；With
First regulon, for adjusting described wind main-piping pressure according to described force value and adjusting described unit load according to described load value.
Preferably, also include:
Second detection unit, for detecting the first stage pressure of steam turbine；
Second judging unit, is used for judging that whether described first stage pressure is more than the second preset value；
Second regulon, if for described first stage pressure more than the second preset value, then the master controller of block increase steam turbine.
Preferably, also include: alarm unit, for when described main steam pressure exceedes described first preset range or described first stage pressure more than the second preset range, reporting to the police.
Preferably, also include: the first display unit, for showing the main steam pressure of described boiler.
Preferably, also include: the second display unit, for showing the first stage pressure of described steam turbine.
Therefore, there is advantages that
Boiler pressure provided by the invention monitoring method and system.In boiler pressure monitoring method, first detect the main steam pressure of described boiler and then judge that whether described main steam pressure is more than the first preset value.If described main steam pressure exceedes described first preset value, then using described main steam pressure as parameter, calculate according to fuzzy control theory and need the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted.Adjust described wind main-piping pressure finally according to described force value and adjust described unit load according to described load value.The present invention is by using main vapour pressure of boiler value as parameter, calculating the force value and load value that should adjust, rather than dependence is operated manually, improves the degree of accuracy of adjustment amount, has saved human resources.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of a kind of boiler pressure provided by the invention monitoring method；
Fig. 2 is the schematic flow sheet of another kind of boiler pressure monitoring method provided by the invention；
Fig. 3 is the structural representation of a kind of boiler pressure provided by the invention monitoring system；
Fig. 4 is the structural representation of another kind of boiler pressure monitoring system provided by the invention.
Detailed description of the invention
The core of the present invention is to provide a kind of boiler pressure monitoring method and system.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Elaborate detail in the following description so that fully understanding the present invention.But the present invention can be different from alternate manner described here implement with multiple, and those skilled in the art can do similar popularization when without prejudice to intension of the present invention.Therefore the present invention is not by the following public restriction being embodied as.
In a kind of boiler pressure monitoring method disclosed by the invention, referring to Fig. 1, this embodiment comprises the following steps:
S101, detect the main steam pressure of described boiler.
S102, judge that whether described main steam pressure is more than the first preset value.
Under a concrete scene, main vapour pressure value often repeatedly more than one particular value at short notice, can make this particular value is the first preset value.Concrete, when unit capacity is 645MW, can make the first preset value is 26.15Mpa.In general, main vapour pressure is higher is likely to be breached 27.55Mpa.Certainly, under other scene, it is also possible to adjust the first preset value according to practical situation, this is not made restriction by the present invention.
If the described main steam pressure of S103 exceedes described first preset value, then using described main steam pressure as parameter, calculate according to fuzzy control theory and need the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted.
For the first concrete preset value for 26.15Mpa, when main steam pressure is 26.15Mpa, corresponding load adjustment amount is 0, and corresponding blower fan main-piping pressure adjustment amount is 0Kpa；When reaching 27.55Mpa, corresponding load value reaches 23MW, and corresponding blower fan main-piping pressure adjustment amount is-0.3Kpa.
S104, according to described force value adjust described wind main-piping pressure and according to described load value adjust described unit load.
In boiler pressure monitoring method provided by the invention, first detect the main steam pressure of described boiler and then judge that whether described main steam pressure is more than the first preset value.If described main steam pressure exceedes described first preset value, then using described main steam pressure as parameter, calculate according to fuzzy control theory and need the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted.Adjust described wind main-piping pressure finally according to described force value and adjust described unit load according to described load value.The present invention is by using main vapour pressure of boiler value as parameter, calculating the force value and load value that should adjust, rather than dependence is operated manually, improves the degree of accuracy of adjustment amount, has saved human resources.
In a kind of boiler pressure monitoring method disclosed by the invention, referring to Fig. 2, this embodiment comprises the following steps:
S201, detect the main steam pressure of described boiler.
S202, judge that whether described main steam pressure is more than the first preset value.
If the described main steam pressure of S203 exceedes described first preset value, then using described main steam pressure as parameter, calculate according to fuzzy control theory and need the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted.
S204, according to described force value adjust described wind main-piping pressure and according to described load value adjust described unit load.
S205, detection steam turbine first stage pressure.
S206, judge that whether described first stage pressure is more than the second preset value.
Concrete, in one scenario, when the unit capacity of thermal power plant is 645MW, can make the second preset value is 20.3Mpa.Certainly, it is necessary to explanation, the setting of the second concrete preset value, it is possible to according to practical situation adjustment, the present invention does not limit at this.
If the described first stage pressure of S207 is more than the second preset value, then the master controller of block increase steam turbine.
It should be noted that the sequence number of each step above-mentioned, it is only embodiment in a specific embodiment, does not represent in method provided by the invention, it is necessary to carry out each step by sequence number.In method provided by the invention, the execution sequence that concrete each portion is rapid, it is necessary to determine according to actual content, not there is between step number and the execution sequence of step strict corresponding relation.
In a specific embodiment, if described main steam pressure exceedes described first preset range or described first stage pressure more than the second preset range, then report to the police.Concrete warning is, it is possible to be sound, it is also possible to be light, does not limit in this present invention.
In other a embodiment, also include the main steam pressure showing described boiler and the first stage pressure showing described steam turbine.
In the monitoring system of a kind of boiler pressure disclosed by the invention, referring to Fig. 3, this embodiment includes herein below:
First detection unit 10, for detecting the main steam pressure of described boiler.First judging unit 20, is used for judging that whether described main steam pressure is more than the first preset value.Computing unit 30, if exceeding described first preset value for described main steam pressure, then using described main steam pressure as parameter, calculating according to fuzzy control theory and needs the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted.First regulon 40, for adjusting described wind main-piping pressure according to described force value and adjusting described unit load according to described load value.
The present invention is by using main vapour pressure of boiler value as parameter, calculating the force value and load value that should adjust, rather than dependence is operated manually, improves the degree of accuracy of adjustment amount, has saved human resources.
In the monitoring system of a kind of boiler pressure disclosed by the invention, referring to Fig. 4, this embodiment includes herein below:
First detection unit 10, for detecting the main steam pressure of described boiler.
First judging unit 20, is used for judging that whether described main steam pressure is more than the first preset value.
Computing unit 30, if exceeding described first preset value for described main steam pressure, then using described main steam pressure as parameter, calculating according to fuzzy control theory and needs the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted.
First regulon 40, for adjusting described wind main-piping pressure according to described force value and adjusting described unit load according to described load value.
Second detection unit 50, for detecting the first stage pressure of steam turbine.
Second judging unit 60, is used for judging that whether described first stage pressure is more than the second preset value.
Second regulon 70, if for described first stage pressure more than the second preset value, then the master controller of block increase steam turbine.
In other examples, also include: alarm unit, for when described main steam pressure exceedes described first preset range or described first stage pressure more than the second preset range, reporting to the police.Certainly, concrete type of alarm can select audible alarm or light warning according to practical situation, and the present invention does not limit at this.
In another specific embodiment, also include: the first display unit, for showing the main steam pressure of described boiler.
In other examples, also include: the second display unit, for showing the first stage pressure of described steam turbine.
The principle that realizes of each embodiment of concrete provided by the invention a kind of boiler pressure monitoring system refer to the embodiment description of aforesaid boiler pressure monitoring method, and the present invention does not repeat them here.
Above a kind of boiler pressure monitoring method and system provided by the present invention is described in detail.Principles of the invention and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help and understands principles of the invention and core concept thereof.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to the present invention carries out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.
Claims (10)
1. a boiler pressure monitoring method, it is characterised in that including:
Detect the main steam pressure of described boiler；
Judge that whether described main steam pressure is more than the first preset value；
If described main steam pressure exceedes described first preset value, then using described main steam pressure as parameter, calculate according to fuzzy control theory and need the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted；
Adjust described wind main-piping pressure according to described force value and adjust described unit load according to described load value.
2. boiler pressure according to claim 1 monitoring method, it is characterised in that also include:
The first stage pressure of detection steam turbine；
Judge that whether described first stage pressure is more than the second preset value；
If described first stage pressure is more than the second preset value, then the master controller of block increase steam turbine.
3. boiler pressure according to claim 2 monitoring method, it is characterised in that also include: if described main steam pressure exceedes described first preset range or described first stage pressure more than the second preset range, then report to the police.
4. boiler pressure according to claim 2 monitoring method, it is characterised in that also include: show the main steam pressure of described boiler.
5. boiler pressure according to claim 4 monitoring method, it is characterised in that also include: show the first stage pressure of described steam turbine.
6. a boiler pressure monitoring system, it is characterised in that including:
First detection unit, for detecting the main steam pressure of described boiler；
First judging unit, is used for judging that whether described main steam pressure is more than the first preset value；
Computing unit, if exceeding described first preset value for described main steam pressure, then using described main steam pressure as parameter, calculating according to fuzzy control theory and needs the force value to wind main-piping pressure adjustment and need the load value that unit load is adjusted；With
First regulon, for adjusting described wind main-piping pressure according to described force value and adjusting described unit load according to described load value.
7. boiler pressure according to claim 6 monitoring system, it is characterised in that also include:
Second detection unit, for detecting the first stage pressure of steam turbine；
Second judging unit, is used for judging that whether described first stage pressure is more than the second preset value；
Second regulon, if for described first stage pressure more than the second preset value, then the master controller of block increase steam turbine.
8. boiler pressure according to claim 7 monitoring system, it is characterised in that also include: alarm unit, for when described main steam pressure exceedes described first preset range or described first stage pressure more than the second preset range, reporting to the police.
9. boiler pressure according to claim 7 monitoring system, it is characterised in that also include: the first display unit, for showing the main steam pressure of described boiler.
10. boiler pressure according to claim 9 monitoring system, it is characterised in that also include: the second display unit, for showing the first stage pressure of described steam turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410842706.2A CN105805722A (en) | 2014-12-30 | 2014-12-30 | Boiler pressure monitoring method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410842706.2A CN105805722A (en) | 2014-12-30 | 2014-12-30 | Boiler pressure monitoring method and system |
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| CN105805722A true CN105805722A (en) | 2016-07-27 |
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| CN201410842706.2A Pending CN105805722A (en) | 2014-12-30 | 2014-12-30 | Boiler pressure monitoring method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113741175A (en) * | 2021-09-14 | 2021-12-03 | 华电电力科学研究院有限公司 | Method and system for coordinated control of machine and furnace |
| CN114817835A (en) * | 2022-04-21 | 2022-07-29 | 西安热工研究院有限公司 | Real-time calculation method for three-level over-limit safety risk of main steam pipeline pressure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114817835A (en) * | 2022-04-21 | 2022-07-29 | 西安热工研究院有限公司 | Real-time calculation method for three-level over-limit safety risk of main steam pipeline pressure |
| CN114817835B (en) * | 2022-04-21 | 2024-03-01 | 西安热工研究院有限公司 | Real-time calculation method for three-level overrun safety risk of main steam pipeline pressure |
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