CN107684971A - Coal pulverizer energy-saving control system - Google Patents
Coal pulverizer energy-saving control system Download PDFInfo
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- CN107684971A CN107684971A CN201710898415.9A CN201710898415A CN107684971A CN 107684971 A CN107684971 A CN 107684971A CN 201710898415 A CN201710898415 A CN 201710898415A CN 107684971 A CN107684971 A CN 107684971A
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- Prior art keywords
- coal pulverizer
- fuzzy
- controller
- coal
- control device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The present invention relates to a kind of coal pulverizer energy-saving control system, including fuzzy coordinated control device, the temperature fuzzy controller being connected with the fuzzy coordinated control device, negative pressure fuzzy controller, load obscurity controller, the fuzzy coordinated control device is connected with coal pulverizer.Compared with prior art, it is controlled because coal pulverizer employs the present invention, reduces coal pulverizer power consumption 8% 25%, improve pulverizer capacity >=10%, reduce coal pulverizer steel consumption >=10%.
Description
Technical field
The application is related to control device technical field, and in particular to a kind of coal pulverizer energy-saving control system.
Background technology
Boiler milling system is the large electricity consumer of thermal power plant, and its power consumption is up to 25% of station service or so, to reduce system
The power consumption of powder system, it is necessary to reduce the powder power consumption processed of pulverized coal preparation system, i.e., reduce the electricity consumption often ground needed for 1 ton of coal as far as possible
Amount.In fact, when the operational factor difference of pulverized coal preparation system (when pulverized coal preparation system is in different operating modes), powder power consumption and coal processed
Powder fineness etc. can have a greater change, therefore reduce powder power consumption processed, it is necessary to maintain the optimized operation work of pulverized coal preparation system as far as possible
Condition.How maintaining pulverized coal preparation system, this is current thermal power plant very concern in optimum operating condition.Solve this problem, it is real
While further must solve the problems, such as two correlations on border.First, what is the optimum operating condition of pulverized coal preparation system, how grasped simultaneously
Determine the optimum operating condition of pulverized coal preparation system.Another problem is after research obtains the optimum operating condition of pulverized coal preparation system, how to maintain
In this operating mode, this is an operating conditions problem, because the main purpose for maintaining optimum operating condition is energy-conservation, lowered consumption, therefore, this
Scheme it be referred to as Energy Saving Control.Really to realize energy-conservation, the consumption reduction of pulverized coal preparation system, it is necessary to while solve two problems above.
It is past at present for the optimized operation operating mode of pulverized coal preparation system but current domestic thermal power plant nearly all independently gets up the two problems
Toward being boiler operatiopn personnel problem of concern, boiler personnel by being likely to be obtained after analysis of experiments one " optimum operating condition ", but
This operating mode is often one and qualitatively described, it is difficult to realize such operating mode by automatic control system；On the other hand,
For the control problem of pulverized coal preparation system, often and simply Power Plant Thermal Process personnel problem of concern, but because coal pulverizer is one
Multivariable with non-linear, large time delay and uncertain disturbances, automatically controlling for one side pulverized coal preparation system have in itself
Larger difficulty, automatically controlled even if some power plant realize, but nor using maintain the optimized operation operating mode of pulverized coal preparation system as
Purpose, actual powder power consumption processed also are difficult to lower.
The content of the invention
For the above situation, to solve the defect of prior art, there is provided a kind of coal pulverizer energy-saving control system, including mould
Paste tuning controller, the temperature fuzzy controller being connected with the fuzzy coordinated control device, negative pressure fuzzy controller, load obscurity
Controller, the fuzzy coordinated control device are connected with coal pulverizer.
Further, the output u of the temperature fuzzy controller1, the output u of the negative pressure fuzzy controller2, it is described negative
The output u of lotus fuzzy controller3Together constitute the input of the coal pulverizer fuzzy coordinated control device, the coal pulverizer Fuzzy Control
The output variable U of device processed1、U2、U3The aperture of the hot air disperser of the coal pulverizer is controlled respectively, recycles the aperture of air door, to coal
Amount.
Compared with prior art, it is controlled because coal pulverizer employs the present invention, reduces coal pulverizer power consumption 8%-25%,
Pulverizer capacity >=10% is improved, reduces coal pulverizer steel consumption >=10%.
Brief description of the drawings
The features and advantages of the present invention can be more clearly understood by reference to accompanying drawing, accompanying drawing is schematically without that should manage
Solve to carry out any restrictions to the present invention, in the accompanying drawings：
Fig. 1 is a kind of structural representation of coal pulverizer energy-saving control system in some embodiments of the invention.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be different from other modes described here using other to implement, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
The optimized operation operating mode and automatically controlling for pulverized coal preparation system for studying pulverized coal preparation system have great importance.Only two
On the Research foundation of person, the Energy Saving Control of the research of pulverized coal preparation system optimized operation operating mode and pulverized coal preparation system could organically be joined
System gets up, and boiler of power plant technical staff and heat power engineering personnel are organically combined, and is saved from pulverized coal preparation system global optimization
Angle go to study and implement brand-new control operational mode, the energy-saving of pulverized coal preparation system is really realized, so as to ensure power plant
Economical operation, and improve the automaticity of power plant.
Coal pulverizer belongs to the large-scale visual plant of power plant, and power consumption is big.Conventional pulverizer control system is typically designed 3 phases
Mutually independent pid control circuit is controlled, and this three loops are coal pulverizer load control system respectively, hot blast gate control mill
Coal machine outlet temperature, reduced air gate control coal pulverizer inlet negative pressure.Because exist seriously in this three loop control systems
The problems such as non-linear, retardance, coal pulverizer is set often to occur chute blockage in the process of running, run the accidents such as powder.And due to running people
Member controls the running status of coal pulverizer using manual manipulation mode and experience, it is difficult to ensure that Mill Systems normal table is transported
OK, it is impossible to be maintained at optimal operating condition for a long time, add power plant's power consumption cost.By the analysis to pulverizer control system with
Research, devises a kind of fuzzy controller herein, and is applied in pulverizer control system, successfully solves coal mill control
The problems such as mission nonlinear, Multivariable Coupling, hysteresis quality, realize coal pulverizer and operate in optimum condition steadily in the long term, it is economical
Performance greatly improves.
As shown in figure 1, the invention provides a kind of coal pulverizer energy-saving control system, including fuzzy coordinated control device 4, with institute
State fuzzy coordinated control device 4 connection temperature fuzzy controller 1, negative pressure fuzzy controller 2, load obscurity controller 3, the mould
Paste tuning controller 4 is connected with coal pulverizer 5.
The output u of the temperature fuzzy controller1, the output u of the negative pressure fuzzy controller2, the load obscurity control
The output u of device3Together constitute the input of the coal pulverizer fuzzy coordinated control device, the output of the coal pulverizer fuzzy controller
Variable U1、U2、U3The aperture of the hot air disperser of the coal pulverizer, the aperture for recycling air door, coal-supplying amount are controlled respectively.
Fuzzy coordinated control device realizes pulverizing process optimal control using original DCS software and hardwares, and control is fully immersed into DCS,
Operation operation is simplified, reduces maintenance workload.
In the present invention, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or
Imply relative importance.Term " multiple " refers to two or more, is limited unless otherwise clear and definite.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (2)
1. a kind of coal pulverizer energy-saving control system, it is characterised in that including fuzzy coordinated control device, with the fuzzy coordinated control
The temperature fuzzy controller of device connection, negative pressure fuzzy controller, load obscurity controller, the fuzzy coordinated control device and coal-grinding
Machine connects.
2. coal pulverizer energy-saving control system according to claim 1, it is characterised in that the temperature fuzzy controller it is defeated
Go out u1, the output u of the negative pressure fuzzy controller2, the output u of the load obscurity controller3Together constitute the coal pulverizer
The input of fuzzy coordinated control device, the output variable U of the coal pulverizer fuzzy controller1、U2、U3The coal pulverizer is controlled respectively
Hot air disperser aperture, recycle the aperture of air door, coal-supplying amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898415.9A CN107684971A (en) | 2017-09-28 | 2017-09-28 | Coal pulverizer energy-saving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710898415.9A CN107684971A (en) | 2017-09-28 | 2017-09-28 | Coal pulverizer energy-saving control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107684971A true CN107684971A (en) | 2018-02-13 |
Family
ID=61156857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710898415.9A Withdrawn CN107684971A (en) | 2017-09-28 | 2017-09-28 | Coal pulverizer energy-saving control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107684971A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542088A (en) * | 1990-11-26 | 1993-02-23 | Matsushita Electric Ind Co Ltd | Controller for electric system |
| US6260030B1 (en) * | 1997-12-01 | 2001-07-10 | Talib Janabi | Multi grade fuzzy logic controller |
| CN1836785A (en) * | 2006-04-24 | 2006-09-27 | 西安交通大学 | Powder-making system automatic control method for heat engine plant steel ball coal grinding mill |
| CN101269350A (en) * | 2008-04-25 | 2008-09-24 | 东南大学 | Operation optimizing and energy-saving control method for intermediate storage iron shot mill flour milling system |
| CN106423526A (en) * | 2016-11-29 | 2017-02-22 | 柴庆宣 | Intelligent control method of steel ball coal mill wind system and module |
| CN207076543U (en) * | 2017-09-28 | 2018-03-09 | 中国华电科工集团有限公司 | Coal pulverizer energy-saving control system |
-
2017
- 2017-09-28 CN CN201710898415.9A patent/CN107684971A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542088A (en) * | 1990-11-26 | 1993-02-23 | Matsushita Electric Ind Co Ltd | Controller for electric system |
| US6260030B1 (en) * | 1997-12-01 | 2001-07-10 | Talib Janabi | Multi grade fuzzy logic controller |
| CN1836785A (en) * | 2006-04-24 | 2006-09-27 | 西安交通大学 | Powder-making system automatic control method for heat engine plant steel ball coal grinding mill |
| CN101269350A (en) * | 2008-04-25 | 2008-09-24 | 东南大学 | Operation optimizing and energy-saving control method for intermediate storage iron shot mill flour milling system |
| CN106423526A (en) * | 2016-11-29 | 2017-02-22 | 柴庆宣 | Intelligent control method of steel ball coal mill wind system and module |
| CN207076543U (en) * | 2017-09-28 | 2018-03-09 | 中国华电科工集团有限公司 | Coal pulverizer energy-saving control system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180213 |