CN201795518U - Coal combustion economic analysis device - Google Patents
Coal combustion economic analysis device Download PDFInfo
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- CN201795518U CN201795518U CN2010202496367U CN201020249636U CN201795518U CN 201795518 U CN201795518 U CN 201795518U CN 2010202496367 U CN2010202496367 U CN 2010202496367U CN 201020249636 U CN201020249636 U CN 201020249636U CN 201795518 U CN201795518 U CN 201795518U
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Abstract
The utility model discloses a coal combustion economic analysis device, which comprises a data acquisition system, a data storage subsystem, an online economic analysis subsystem and an historical economic analysis subsystem. The data acquisition system is used for online acquiring of hearth temperature field data, carbon content in fly ash and other boiler running parameters, the data storage subsystem stores real-time running parameters and economic analysis results with a certain sampling frequency, the online economic analysis subsystem predicts critical fire extinguishing temperature under a current working condition in real time, predicts optimal values of the boiler running parameters and consumption difference between real-time values and the optimal values, assesses the current boiler running parameters and provides adjustment suggestion, and the historical economic analysis subsystem analyzes running conditions of a boiler within a period of time in history and realizes automation of employee performance assessment. The coal combustion economic analysis device assesses ignitability of coal by the aid of detection of the furnace temperature field and the boiler running parameters, builds a real-time specialist running guidance system, and overcomes the shortcoming that coal quality needs to be known in advance in the existing combustion optimization technology.
Description
Technical field
The utility model belongs to station boiler economic analysis technology, relates in particular to a kind of coal combustion economic analysis device.
Background technology
At present, all there is the problem of burning coal off-design coal in overwhelming majority power plant, and the ature of coal line Measurement Technique can't reach required precision, coal analysis will postpone a talent at least and can obtain, process of coal combustion in the boiler is in " black box " state, and the operations staff can only operate by rule of thumb, because existing burning optimization technology all needs to know in advance ature of coal, ature of coal can't accomplish in time to optimize operation when changing, more difficultly accomplish real-time economic analysis.
Therefore, the real-time estimate ature of coal, the whole life of coal combustion process carried out on-line monitoring realize that burning optimization and economy on-line analysis are most important to the development of power plant.
Summary of the invention
The purpose of this utility model is, a kind of coal combustion economic analysis device is provided, and this device can be by the whole process of on-line monitoring coal combustion, and feedback optimized operational factor guarantees that boiler is stable, economical operation, and the inquiry of historical data is provided.
For realizing above-mentioned task, the utility model is taked following technical solution:
A kind of coal combustion economic analysis device comprises:
One data acquisition subsystem is used for gathering real time data with certain cycle;
One data storage subsystem is used to store historical data to be checked;
One economy on-line analysis subsystem, be used for online evaluation catch fire state, estimation objective optimization parameter and analyze consumption poor, assess operating condition;
One economy historical analysis subsystem is used for the query history parameter trend, realizes the automation of performance appraisal;
Data acquisition subsystem is connected with data storage subsystem, economy on-line analysis subsystem respectively, and data storage subsystem is connected with economy on-line analysis subsystem, economy historical analysis subsystem respectively.
Some other characteristics of the present utility model are that described data acquisition subsystem comprises:
The boiler operating parameter acquisition system is used for gathering the every operational factor of boiler in real time from Power Plant DCS System.
Fire box temperature field acquisition system is made of infrared radiation thermometer, and each infrared detecting set distributes at various height, in order to gather the fire box temperature field data.
The unburned carbon in flue dust acquisition system is used for the online acquisition unburned carbon in flue dust, the after-flame rule of reflection coal dust.
Interface unit, for economy on-line analysis subsystem and data storage subsystem provide data access service, this interface unit obtains real time data, and data is offered economy on-line analysis subsystem and data storage subsystem from boiler operating parameter acquisition system, fire box temperature field acquisition system, fire box temperature field acquisition system.
Described economy on-line analysis subsystem comprises:
The assessment unit that catches fire is used for predicted critical fire extinguishing temperature, even is lower than this temperature, then can cause fire extinguishing.
The objective optimization value of every operational factor by the analysis of history data, is predicted in the power consumption analysis unit, obtain under target operating condition and real-time working condition under coal consumption poor.
The expert diagnosis unit is used for real-time assessment operational factor and feedback adjusting suggestion.
Described economy historical analysis subsystem comprises:
The parameter trend query unit is used to inquire about operational factor historical trend.
The performance appraisal unit, the automation and the automatic printing function of form of realization performance appraisal.
The technique effect that the utility model brings is:
1, the whole life of real-time estimate ature of coal, monitoring coal combustion is carried out on-line monitoring to the whole life of coal combustion process.Thereby make burning no longer be in " black box " state, solved the difficult point that existing burning optimization technology all needs to know in advance ature of coal.
2, output-input ratio height.System utilizes original DCS system of power plant, adds the temperature field acquisition system and can realize the economic analysis of coal combustion, thereby save the cost of annual more than one hundred million units for power plant.
3, software operation is simple, and the function design meets power plant's demand.Help to improve the employee's of power plant accuracy and operating efficiency such as functions such as performance appraisal automation, expert diagnosis.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The utility model is described in further detail below in conjunction with accompanying drawing.
The specific embodiment
With reference to figure 1, the implementation case provides coal combustion economic analysis device, comprising: data acquisition subsystem, economy on-line analysis subsystem, data storage subsystem and economy historical analysis subsystem.
Wherein, data acquisition subsystem comprises boiler operating parameter acquisition system, fire box temperature field acquisition system, unburned carbon in flue dust acquisition system and interface unit.
The boiler operating parameter acquisition system can utilize existing DCS system of power plant to gather the every operational factor of boiler in real time; The fire box temperature acquisition system is made of infrared detection sensor and infrared radiation thermometer, and infrared detection sensor is distributed in the burner hearth differing heights; The unburned carbon in flue dust acquisition system adopts the flying dust carbonmeter of Xi'an Communications University's research and development.Interface unit is a server that database platform is housed.Interface unit links to each other with three acquisition systems by serial ports of computers, and real time data is read to database; Interface unit links to each other with data storage subsystem with economy on-line analysis subsystem by serial ports of computers, and the data of needs are read from database.
Economy on-line analysis subsystem comprises the assessment unit that catches fire, power consumption analysis unit and expert diagnosis unit.
Catch fire assessment unit at first by the analysis to historical data, set up operational factor and ature of coal parameter relationship, this relational expression is that input parameter is calculated coal characteristic (comprising ash content, low heat valve and fugitive constituent) with powder machine rotating speed, fire box temperature, boiler capacity and first and second wind speed; Secondly, the analysis of history data are set up the relational expression of ature of coal, operational factor and critical fire extinguishing temperature, and this relational expression serves as an input predicted critical fire extinguishing temperature with coal characteristic, pulverized-coal concentration, wind powder temperature, have only fire box temperature is remained on this temperature, boiler just can safely and steadily run.Above real-time parameter is read from interface unit in the course of the work by system, and the anti-ature of coal that pushes away of substitution ature of coal parameter relationship formula is again with the critical fire extinguishing temperature relation of ature of coal parameter substitution formula.
The power consumption analysis unit is used to predict the objective optimization value of every operational factor, obtain under target operating condition and real-time working condition under coal consumption poor; Its process is, at first by analyzing a large amount of historical data in the data storage subsystem, predicts the optimization target values of each operational factor under different atures of coal, the different load, boiler operatiopn under this operating mode, economy the best; Read real-time boiler operating parameter from the interface unit of data acquisition subsystem again, calculate the coal consumption under the current operational factor and optimize the poor of parameter, the analysis result with the power consumption analysis unit writes data storage subsystem at last, uses for historical query.
Real-time parameter is read in the expert diagnosis unit from interface unit, according to working as preload and ature of coal, data in the contrast expert advice database, diagnose current operational factor, if parameter is undesired, then report to the police, and enumerate out abnormal parameter, cause abnormal reason of parameter and rational adjustment scheme to the staff.Wherein, the data in the expert advice database are classification foundation with coal and load, have stored the upper and lower bound of every operational factor, and parameter is normal within this scope; This upper and lower bound is the analysis of history data.
Data acquisition subsystem is only stored parameter current, data storage subsystem is chosen has the parameter that performance appraisal is worth, store a large amount of historical datas, for the foundation of the assessment models of catching fire, power consumption analysis model and expert diagnosis model provides material and reference, for economy historical analysis subsystem provides the data that can inquire about.
Economy historical analysis subsystem comprises parameter trend unit and performance appraisal unit.
User's order is accepted in the parameter trend unit, as the time period of inquiry, the clauses and subclauses of inquiry etc., takes out related data from data storage subsystem, and draws correlation curve.The automatic computing performance appraisal in performance appraisal unit value realizes the automation of performance appraisal.
To sum up, the utility model can be widely used in the thermal power plant of coal frequent variations.But the whole life of real-time estimate ature of coal, monitoring coal combustion is carried out on-line monitoring to the whole life of coal combustion process.Thereby make burning no longer be in " black box " state, solved the difficult point that existing burning optimization technology all needs to know in advance ature of coal.The utility model output-input ratio height.Device can utilize original DCS system of power plant, adds the temperature field acquisition system and can realize the economic analysis of coal combustion, thereby save the cost of annual more than one hundred million units for power plant.Software operation is simple, and the function design meets power plant's demand.Help to improve the employee's of power plant accuracy and operating efficiency such as functions such as performance appraisal automation, expert diagnosis.
Claims (8)
1. coal combustion economic analysis device is characterized in that this device comprises:
One data acquisition subsystem is used for gathering real time data with certain cycle;
One data storage subsystem is used to store historical data to be checked;
One economy on-line analysis subsystem, be used for online evaluation catch fire state, estimation objective optimization parameter and analyze consumption poor, assess operating condition;
One economy historical analysis subsystem is used for the query history parameter trend, realizes the automation of performance appraisal;
Data acquisition subsystem is connected with data storage subsystem, economy on-line analysis subsystem respectively, and data storage subsystem is connected with economy historical analysis subsystem, economy historical analysis subsystem respectively.
2. coal combustion economic analysis device as claimed in claim 1 is characterized in that described data acquisition subsystem comprises:
The boiler operating parameter acquisition system is used for gathering the every operational factor of boiler in real time from Power Plant DCS System;
Fire box temperature field acquisition system is in order to gather the fire box temperature field data; This fire box temperature field acquisition system is made of infrared detection sensor and infrared radiation thermometer, and infrared detection sensor is distributed in the different height of burner hearth;
The unburned carbon in flue dust acquisition system is used for the online acquisition unburned carbon in flue dust, the after-flame rule of reflection coal dust;
Interface unit is used to economy on-line analysis subsystem and data storage subsystem that data access service is provided;
Boiler operating parameter acquisition system, fire box temperature field acquisition system all are connected with interface unit with the unburned carbon in flue dust acquisition system.
3. coal combustion economic analysis device as claimed in claim 1 is characterized in that, described economy on-line analysis subsystem comprises:
The assessment unit that catches fire is used for predicted critical fire extinguishing temperature, even is lower than this temperature, then can cause fire extinguishing;
The power consumption analysis unit is used to predict the objective optimization value of every operational factor, obtain under target operating condition and real-time working condition under coal consumption poor;
The expert diagnosis unit is used for real-time assessment operational factor and feedback adjusting suggestion.
4. coal combustion economic analysis device as claimed in claim 1 is characterized in that, described economy historical analysis subsystem comprises:
The parameter trend query unit is used to inquire about operational factor historical trend;
The performance appraisal unit is used to realize the automation and the automatic printing function of form of performance appraisal.
5. coal combustion economic analysis device as claimed in claim 2 is characterized in that, described interface unit adopts the computer serial line interface to link to each other with economy on-line analysis system and data storage subsystem.
6. coal-fired economic analysis device as claimed in claim 3 is characterized in that, the described assessment unit that catches fire is used for according to the online anti-ature of coal that pushes away of operating condition, according to the anti-ature of coal that pushes away, and the assessment of catching fire.
7. coal-fired economic analysis device as claimed in claim 3 is characterized in that, the objective optimization value of described parameter is with reference in history with the optimized parameter of the parameter estimation of operating mode.
8. coal-fired economic analysis device as claimed in claim 3 is characterized in that, described expert diagnosis unit, and it is fixed to be used for the assessment of operational factor and operating mode nation, but Realtime Alerts during abnormal parameters.
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CN103148473A (en) * | 2013-03-12 | 2013-06-12 | 华北电力科学研究院有限责任公司 | Optimal operation method and system for utility boiler based on CO |
CN103235986A (en) * | 2013-05-03 | 2013-08-07 | 上海发电设备成套设计研究院 | Operation and consumption optimization method based on boiler safety analysis |
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CN103267771A (en) * | 2013-05-09 | 2013-08-28 | 西安交通大学 | Test based critical ignition temperature determination method |
CN103345213A (en) * | 2013-06-09 | 2013-10-09 | 华电电力科学研究院 | Device and method for fire coal management and combustion strategy optimization in variable coal quality conditions of coal-fired thermal power generating unit |
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