CN108758684A - A kind of boiler secondary air baffle opening desired value kinetic-control system and method - Google Patents
A kind of boiler secondary air baffle opening desired value kinetic-control system and method Download PDFInfo
- Publication number
- CN108758684A CN108758684A CN201810434865.7A CN201810434865A CN108758684A CN 108758684 A CN108758684 A CN 108758684A CN 201810434865 A CN201810434865 A CN 201810434865A CN 108758684 A CN108758684 A CN 108758684A
- Authority
- CN
- China
- Prior art keywords
- secondary air
- air damper
- control
- module
- aperture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/005—Regulating air supply or draught using electrical or electromechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/10—Correlation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/02—Air or combustion gas valves or dampers
- F23N2235/06—Air or combustion gas valves or dampers at the air intake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/16—Controlling secondary air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/10—Generating vapour
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention discloses a kind of boiler secondary air baffle opening desired value kinetic-control system and methods, including the first control logic module, the second Logic control module, controller, adder and the acquisition module for acquiring the AGC instructions that electric energy management system is sent out；The output end of the acquisition module is connected with the input terminal of the second Logic control module, the output end of second Logic control module is connected with the output end of the first control logic module with the input terminal of adder, the output end of adder is connected with the input terminal of controller, and the output end of controller is connected with secondary air damper control terminal.The present invention can effectively improve the Steam Temperature Characteristics during boiler varying duty under Researched of Air Staging Combustion Burning Pulverized Coal state, prevents Steam Temperature for Boiler overtemperature or serious deficient temperature, significantly improves the safety in operation and economy of boiler.
Description
Technical field
The invention belongs to field of thermal power, be related to a kind of boiler secondary air baffle opening desired value kinetic-control system and
Method.
Background technology
Researched of Air Staging Combustion Burning Pulverized Coal is the mainstream technology that tengentially fired furnace reduces that NOx generates concentration.It is fired in air classification
Under burning state, the flame mechanism of fuel is elongated, and steam temperature Parameters variation is violent during causing boiler varying duty, is susceptible to
Application of load steam temperature overtemperature or the serious relatively low situation of load shedding steam temperature, safety and economy to boiler operatiopn are brought significantly
Adverse effect.
Invention content
It is an object of the invention to overcome the above-mentioned prior art, a kind of secondary air damper aperture desired value is provided
Kinetic-control system and method, the system and method can be effectively improved the Steam Temperature Characteristics of boiler during varying duty.
In order to achieve the above objectives, secondary air damper aperture desired value kinetic-control system of the present invention includes control
Device, adder, the first control logic module of preset value for generating benchmark secondary air damper aperture, for generating additional two
Second Logic control module of the preset value of secondary windshield plate aperture and the AGC instructions sent out for acquiring electric energy management system
Acquisition module.
Secondary air damper aperture desired value intelligent control method of the present invention includes the following steps：
1) when the variation of generating set load within a preset range when, the first control logic module generate the secondary windscreen of benchmark
The preset value of plate aperture, the output of the second Logic control module is " 0 ", and controller is pre- according to the benchmark secondary air damper aperture
If being worth the opening size of control baffle；
When the variation of generating set load is not in preset range, acquisition module obtains the AGC that electric energy management system is sent out
Instruction, the AGC instructions that acquisition module acquisition electric energy management system is sent out, and AGC instructions are forwarded to the second logic control
In module, the second Logic control module generates the preset value for adding secondary air damper aperture；First control logic module production simultaneously
The preset value of raw benchmark secondary air damper aperture, the preset value of the additional secondary air damper aperture are opened with benchmark secondary air damper
After the preset value of degree is added by adder, the preset value of practical secondary air damper aperture is obtained, controller is according to the reality two
The opening size of the given value control secondary air damper of secondary windshield plate aperture.
The invention has the advantages that：
Secondary air damper aperture desired value kinetic-control system and method for the present invention during the work time, generator
Group is when steady load moves, the preset value of secondary air damper aperture on the basis of the preset value of practical secondary air damper aperture, when
The variation of generating set load not within a preset range when, the preset value of practical secondary air damper aperture is additional secondary air damper
It is that the preset value of aperture is added with the preset value of benchmark secondary air damper aperture as a result, the function of additional secondary air damper aperture can
Quickly to change the allocation of the amount of air of boiler secondary wind system, (load shedding process) is raised in advance or reduces (application of load process) fire
Flame centre-height reaches improvement steam temperature to efficiently control the amplitude of variation of furnace flame outlet temperature during varying duty
The purpose of characteristic.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 it is acquisition module, 2 be the second Logic control module, 3 be the first control logic module, 4 is adder, 5
Device in order to control.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, this law secondary air damper aperture desired value kinetic-control system of the present invention include controller 5,
Adder 4, the first control logic module 3 of preset value for generating benchmark secondary air damper aperture, for generating additional two
Second Logic control module 2 of secondary windshield plate aperture preset value and for acquiring AGC instructions that electric energy management system sends out
Acquisition module 1；The output end of the acquisition module 1 is connected with the input terminal of the second Logic control module 2, the second logic control
The output end of module 2 is connected with the output end of the first control logic module 3 with the input terminal of adder 4, the output of adder 4
End is connected with the input terminal of controller 5, and the output end of controller 5 is connected with the control terminal of secondary air damper.
Secondary air damper aperture desired value dynamic control method of the present invention includes the following steps：
1) when the variation of generating set load within a preset range when, the first control logic module 3 generate benchmark Secondary Air
The preset value of baffle opening desired value, the output of the second Logic control module 2 is " 0 ", and controller 5 is according to the secondary windscreen of the benchmark
The preset value of plate aperture desired value is opened by controlling the aperture of hot-air damper in an air duct to adjust corresponding secondary air damper
Degree；
When the variation of generating set load is not in preset range, acquisition module 1 obtains the AGC that electric energy management system is sent out
Instruction, acquisition module 1 acquires the AGC instructions that electric energy management system is sent out, and AGC instructions are forwarded to the second logic control
In module 2, the second Logic control module 2 generates the preset value for adding secondary air damper aperture；First control logic module 3 simultaneously
Generate the preset value of benchmark secondary air damper aperture, preset value and the benchmark secondary air damper of the additional secondary air damper aperture
After the preset value of aperture is added by adder 4, the preset value of practical secondary air damper aperture is obtained, controller 5 is according to the reality
The given value of border secondary air damper aperture adjusts corresponding secondary air damper aperture.
During generating set load is pressurized, the sum of benchmark secondary air damper aperture and additional secondary air damper aperture
The practical secondary air damper aperture during varying duty is constituted, when generating set is when steady load is run, only benchmark two
Secondary windshield plate aperture works.
Claims (2)
1. a kind of boiler secondary air baffle opening desired value kinetic-control system, which is characterized in that including controller (5), addition
Device (4), the first control logic module (3) of preset value for generating benchmark secondary air damper aperture, for generating additional two
The second Logic control module (2) of the preset value of secondary windshield plate aperture and refer to for acquiring the AGC that electric energy management system is sent out
The acquisition module (1) of order；
The output end of the acquisition module (1) is connected with the control terminal of the second Logic control module (2), the second logic control mould
The output end of block (2) and the output end of the first control logic module (3) are connected with the input terminal of adder (4), adder (4)
Output end be connected with the input terminal of controller (5), the output end of controller (5) is connected with the control terminal of secondary air damper
It connects.
2. a kind of boiler secondary air baffle opening desired value dynamic control method, which is characterized in that based on described in claim 1
Secondary air damper aperture desired value dynamic control, includes the following steps：
When the variation of generating set load within a preset range when, the first control logic module (3) generate benchmark secondary air damper
The preset value of aperture, the second Logic control module (2) output is " 0 ", and controller (5) is according to the benchmark secondary air damper aperture
Preset value adjusted by controlling the aperture of secondary air damper；
When the variation of generating set load is not in preset range, the AGC that acquisition module (1) acquisition electric energy management system is sent out refers to
It enables, and AGC instructions is forwarded in the second Logic control module (2), the second Logic control module (2) generates additional secondary
The preset value of windshield plate aperture；The first control logic module (3) generates the preset value of benchmark secondary air damper aperture simultaneously, described
After the preset value of additional secondary air damper aperture is added with the preset value of benchmark secondary air damper aperture by adder (4), obtain
The preset value of practical secondary air damper aperture, controller (5) control two according to the given value of the practical secondary air damper aperture
Baffle opening in secondary air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810434865.7A CN108758684A (en) | 2018-05-09 | 2018-05-09 | A kind of boiler secondary air baffle opening desired value kinetic-control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810434865.7A CN108758684A (en) | 2018-05-09 | 2018-05-09 | A kind of boiler secondary air baffle opening desired value kinetic-control system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108758684A true CN108758684A (en) | 2018-11-06 |
Family
ID=64009362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810434865.7A Pending CN108758684A (en) | 2018-05-09 | 2018-05-09 | A kind of boiler secondary air baffle opening desired value kinetic-control system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108758684A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110288161A (en) * | 2019-06-28 | 2019-09-27 | 新奥数能科技有限公司 | The adjusting method and device of the blow valve of gas fired-boiler |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848250A (en) * | 2015-04-17 | 2015-08-19 | 西安热工研究院有限公司 | Intelligent primary air pressure target value control system and method |
-
2018
- 2018-05-09 CN CN201810434865.7A patent/CN108758684A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848250A (en) * | 2015-04-17 | 2015-08-19 | 西安热工研究院有限公司 | Intelligent primary air pressure target value control system and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110288161A (en) * | 2019-06-28 | 2019-09-27 | 新奥数能科技有限公司 | The adjusting method and device of the blow valve of gas fired-boiler |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181106 |
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