CN206567076U - A kind of system controlled for fineness of pulverized coal - Google Patents
A kind of system controlled for fineness of pulverized coal Download PDFInfo
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- CN206567076U CN206567076U CN201621005526.XU CN201621005526U CN206567076U CN 206567076 U CN206567076 U CN 206567076U CN 201621005526 U CN201621005526 U CN 201621005526U CN 206567076 U CN206567076 U CN 206567076U
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Abstract
The utility model is related to a kind of system controlled for fineness of pulverized coal, and the system includes parameter acquisition module, analysis and processing module, regulation control module, fineness of pulverized coal on-line measurement module.The utility model carries out on-line analysis by exporting the variation tendency of fineness of pulverized coal to coal pulverizer, and then realization accurately adjusts separator rotating speed online according to fineness of pulverized coal and variation tendency, by fineness of pulverized coal closed-loop control in default scope, the stable output of fineness of pulverized coal and uniformity is realized.
Description
Technical field
The present invention relates to milling equipment technical field, and in particular to a kind of system controlled for fineness of pulverized coal.
Background technology
Coal pulverizer is one of important subsidiary engine in thermal power plant, and its operation conditions directly affects the safety economy fortune of boiler
OK, pulverizer capacity and fineness of pulverized coal directly affect the combustion position of boiler, and its mill processes and coal dust separation process are influences
One of final deciding factor exerted oneself with fineness of pulverized coal of coal pulverizer.
Coal dust is thinner, and ash content carbon is lower, and efficiency of combustion is higher, but powder power consumption processed is bigger simultaneously；Therefore, there is one most
Good fineness of pulverized coal, now the heat loss due to incomplete combustion of unit and powder power consumption summation processed reach minimum.Therefore, no matter in what operating mode
Under, the fineness of pulverized coal of coal pulverizer remains economic, the complete burning that desired value is just conducive to coal dust, but at present absolutely mostly
In number power plant, fineness of pulverized coal is consistent not with the runing adjustment of boiler, and which results in economic loss to a certain extent.
For this reason, it is necessary to provide a kind of system of fineness of pulverized coal control, to be controlled regulation to fineness of pulverized coal, make coal dust
Fineness meets boiler operatiopn needs.The Chinese patent open source literature of Publication No. " 103100477A " discloses a kind of middling speed coal-grinding
The method that machine automatically adjusts fineness of pulverized coal, this method is the parameter by obtaining coal-supplying amount, is then adjusted according to certain rule
Separator, controls the fineness of coal dust.But the fineness of pulverized coal of coal pulverizer with coal-supplying amount except having outside the Pass, also by separator rotating cage rotating speed
（Or baffle opening）, ventilation, the influence of the factor such as grinding roller thrust, separator rotating speed（Or baffle opening）If these can not be followed
Factor adjust automatically, may result in fineness of pulverized coal and is among fluctuation, it is impossible to meet the requirement of economical combustion.
The content of the invention
The present invention is in view of the above-mentioned problems, aim to provide a kind of system controlled for fineness of pulverized coal, to be exported to coal pulverizer
The variation tendency of fineness of pulverized coal carries out on-line analysis, and then realizes that accurately adjustment is separated online according to fineness of pulverized coal and variation tendency
Device rotating speed, by fineness of pulverized coal closed-loop control in default scope, realizes the stable output of fineness of pulverized coal and uniformity.
Technical scheme is as follows：
A kind of system controlled for fineness of pulverized coal, it includes parameter acquisition module, analysis and processing module, regulation control
Module, fineness of pulverized coal on-line measurement module；
Wherein, parameter acquisition module：For power plant's operational factor acquisition system, the parameter for obtaining coal pulverizer coal-supplying amount；
Adjust control module：It is that the tune of control dynamic separator rotating speed or static separation device baffle opening can be adjusted
Save control system；
Fineness of pulverized coal on-line measurement module：For to fineness of pulverized coal carry out on-line analysis, measurement, draw fineness of pulverized coal or its
Variation tendency；
Analysis and processing module：Difference Connecting quantity acquisition module, regulation control module and fineness of pulverized coal on-line measurement module,
It adjusts separator according to the parameter of the coal-supplying amount, and feedback data is used as using the fineness of pulverized coal drawn or its variation tendency
Further to adjust separator, the closed-loop control of fineness of pulverized coal is realized, fineness of pulverized coal is controlled in claimed range.
Beneficial effects of the present invention are embodied in：It is divided online by exporting the variation tendency of fineness of pulverized coal to coal pulverizer
Analysis, and then realization accurately adjusts separator rotating speed online according to fineness of pulverized coal and variation tendency, and fineness of pulverized coal closed-loop control is existed
In default scope, the stable output of fineness of pulverized coal and uniformity is realized.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the functional frame composition of fineness of pulverized coal control system.
Fig. 2 is the schematic flow sheet of fineness of pulverized coal control method.
Embodiment
Accompanying drawing is specific embodiment of the invention.
As shown in figure 1, the embodiment includes parameter acquisition module, analysis and processing module, regulation control module and coal dust
Fineness on-line measurement module；Wherein, parameter acquisition module：For power plant's operational factor acquisition system, for obtaining coal pulverizer to coal
The parameter of amount；Adjust control module：Control can be adjusted to dynamic separator rotating speed or static separation device baffle opening
Regulation and control system；Fineness of pulverized coal on-line measurement module：For carrying out on-line analysis, measurement to fineness of pulverized coal, show that coal dust is thin
Degree or its variation tendency；Analysis and processing module：Connecting quantity acquisition module, regulation control module and fineness of pulverized coal are surveyed online respectively
Measure module, it adjusts separator according to the parameter of the coal-supplying amount, using the fineness of pulverized coal drawn or its variation tendency as
Feedback data further adjusts separator, realizes the closed-loop control of fineness of pulverized coal, fineness of pulverized coal is controlled in claimed range
It is interior.
As shown in Fig. 2 the control method of the embodiment is as follows：
The parameter of coal pulverizer coal-supplying amount is obtained by parameter acquisition module；
Fineness of pulverized coal on-line measurement module carries out on-line analysis, measurement to fineness of pulverized coal, draws fineness of pulverized coal or its change
Trend；
Analysis and processing module receives the parameter of the coal-supplying amount and adjusts separator by adjusting control module（Dynamic point
From device rotating speed or static separation device baffle opening）, analysis and processing module using the fineness of pulverized coal drawn or its variation tendency as
Feedback data further adjusts separator, realizes the closed-loop control of fineness of pulverized coal, fineness of pulverized coal is controlled in claimed range
It is interior；
Wherein, the side of separator is further adjusted using the fineness of pulverized coal drawn or its variation tendency as feedback data
Method is that regulation is performed as follows:
When the claimed range or fineness of pulverized coal value for being more than fineness of pulverized coal in surveyed fineness of pulverized coal value have the trend for becoming big, from
The dynamic aperture for reducing static separation device baffle plate or the rotating speed for increasing dynamic separator motor；It is less than coal dust in surveyed fineness of pulverized coal value
When the claimed range or fineness of pulverized coal value of fineness have the trend diminished, aperture or the reduction of static separation device baffle plate are automatically increased
The rotating speed of dynamic separator motor.
Above-mentioned on-line analysis, measurement on fineness of pulverized coal is to influence the various factors of fineness of pulverized coal as modeling data base
Plinth, using pulverized coal preparation system and the simulation model of coal dust piece-rate system as model basis, using many data vector analog algorithms, to coal dust
Fineness carries out on-line analysis and prediction.
Claims (1)
1. a kind of system controlled for fineness of pulverized coal, it is characterised in that：Include parameter acquisition module, analysis and processing module,
Adjust control module, fineness of pulverized coal on-line measurement module；
Wherein, the parameter acquisition module：For power plant's operational factor acquisition system, the parameter for obtaining coal pulverizer coal-supplying amount；
The regulation control module：For that control can be adjusted to the rotating speed of dynamic separator or the baffle opening of static separation device
Regulation and control system；
The fineness of pulverized coal on-line measurement module：For to fineness of pulverized coal carry out on-line analysis, measurement, draw fineness of pulverized coal or its
Variation tendency；
The analysis and processing module：Difference Connecting quantity acquisition module, regulation control module and fineness of pulverized coal on-line measurement module,
It adjusts separator according to the parameter of the coal-supplying amount, and feedback data is used as using the fineness of pulverized coal drawn or its variation tendency
Further to adjust separator, the closed-loop control of fineness of pulverized coal is realized, fineness of pulverized coal is controlled in claimed range.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621005526.XU CN206567076U (en) | 2016-08-31 | 2016-08-31 | A kind of system controlled for fineness of pulverized coal |
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| CN201621005526.XU CN206567076U (en) | 2016-08-31 | 2016-08-31 | A kind of system controlled for fineness of pulverized coal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108636586A (en) * | 2018-04-12 | 2018-10-12 | 中国神华能源股份有限公司 | Determine the method and device of pulverizer capacity correction factor |
| CN109855113A (en) * | 2018-12-24 | 2019-06-07 | 新奥数能科技有限公司 | A kind of method and apparatus preventing station boiler slagging |
| CN110296431A (en) * | 2019-06-26 | 2019-10-01 | 西安热工研究院有限公司 | A kind of fineness of pulverized coal automatic regulating system and method based on static separation device |
| CN110976060A (en) * | 2019-11-18 | 2020-04-10 | 国网河北省电力有限公司电力科学研究院 | Dynamic separator adjusting method based on fly ash online monitoring device |
| CN114004301A (en) * | 2021-11-03 | 2022-02-01 | 江苏博泰环保工程有限公司 | Ash conveying system and control method based on cluster analysis |
-
2016
- 2016-08-31 CN CN201621005526.XU patent/CN206567076U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108636586A (en) * | 2018-04-12 | 2018-10-12 | 中国神华能源股份有限公司 | Determine the method and device of pulverizer capacity correction factor |
| CN109855113A (en) * | 2018-12-24 | 2019-06-07 | 新奥数能科技有限公司 | A kind of method and apparatus preventing station boiler slagging |
| CN110296431A (en) * | 2019-06-26 | 2019-10-01 | 西安热工研究院有限公司 | A kind of fineness of pulverized coal automatic regulating system and method based on static separation device |
| CN110976060A (en) * | 2019-11-18 | 2020-04-10 | 国网河北省电力有限公司电力科学研究院 | Dynamic separator adjusting method based on fly ash online monitoring device |
| CN114004301A (en) * | 2021-11-03 | 2022-02-01 | 江苏博泰环保工程有限公司 | Ash conveying system and control method based on cluster analysis |
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