CN107355813A - Gas boiler burns furnace control system automatically - Google Patents
Gas boiler burns furnace control system automatically Download PDFInfo
- Publication number
- CN107355813A CN107355813A CN201710599024.7A CN201710599024A CN107355813A CN 107355813 A CN107355813 A CN 107355813A CN 201710599024 A CN201710599024 A CN 201710599024A CN 107355813 A CN107355813 A CN 107355813A
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- CN
- China
- Prior art keywords
- air
- control system
- boiler
- steam
- gas
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000003245 coal Substances 0.000 claims abstract description 15
- 239000003034 coal gas Substances 0.000 claims abstract description 15
- 239000000446 fuel Substances 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 54
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/022—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
- F22D5/34—Applications of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
- F23N2005/185—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of fuel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses gas boiler to burn furnace control system automatically,It is connected including blast furnace gas main pipe by some blast furnace gas branch pipes with boiler,High coal regulating valve is arranged with every blast furnace gas branch pipe,Every air-introduced machine is connected by air branch pipe with boiler respectively,Air control valve is arranged with every air branch pipe,Water source is connected by feed pump and feed pipe with drum,Feed pipe is provided with feed-regulating valve,Drum is connected by steam pipe with steam turbine,Also include internal preset optimum air-fuel ratio and the automatic burning stove PLC control system of drum safety level,It can automatically adjust according to optimum air-fuel ratio to each high coal regulating valve and each air control valve,The coal gas total amount into boiler is set to meet optimum air-fuel ratio with air total amount,Feed-regulating valve can also be automatically adjusted according to drum safety level,Water level in drum is set to be in safety level all the time.The present invention has the advantages of influence and high safety in operation that can eliminate blast furnace gas main pipe pressure oscillation.
Description
Technical field
The present invention relates to gas boiler to burn stove technical field, and in particular to gas boiler burns furnace control system automatically.
Background technology
The structure of gas boiler burning furnace system is at present:Drum, the blast furnace being connected including boiler, with heat exchanger tube in boiler
Gas main, some air-introduced machines, water source and the generator coaxially connected with steam turbine, blast furnace gas main pipe pass through some
Root blast furnace gas branch pipe is connected with boiler, and every air-introduced machine is connected by an air branch pipe with boiler respectively, and water source passes through
Feed pump and feed pipe are connected with the water inlet of drum, and the steam (vapor) outlet of drum passes through steam pipe and the steam inlet of steam turbine
It is connected.During work, the coal gas in blast furnace gas main pipe enters boiler by each blast furnace gas branch pipe, while air-introduced machine leads to air
Cross each air branch pipe and enter boiler, coal gas is changed pipe with air combustion heating in boiler, while feed pump can be by the water at water source
Drum is constantly entered by feed pipe, changes pipe through overheat again into the water in drum, water changes Guan Houhui through overheat and was heated to form
Vapours is returned in drum, then enters steam turbine from steam pipe, steam turbine drawing generator is generated electricity.The coal used at present
Gas boiler burns furnace system and had the drawback that:(1)When the ductwork pressure of blast furnace gas main pipe fluctuates, boiler can be caused to fire
Gas incomplete combustion, not only causes the waste of the energy, and also increases pollution of the blast furnace discharge to environment;(2)Can not be to vapour
Water level in bag control effectively, and reduces the operation stability and security of burning in boiler stove.
The content of the invention
It is an object of the invention to provide a kind of ductwork pressure that can effectively eliminate blast furnace gas main pipe to fluctuate to burning in boiler stove
Influence and operation stability and safe gas boiler burn furnace control system automatically.
To achieve the above object, present invention employs following technical scheme:Described gas boiler burns furnace control system automatically, bag
Include boiler, the drum being connected with heat exchanger tube in boiler, blast furnace gas main pipe, some air-introduced machines and water source and steam turbine
Coaxially connected generator, the blast furnace gas main pipe is connected by some blast furnace gas branch pipes with boiler, in every height
High coal regulating valve is respectively arranged with producer gas branch pipe, every air-introduced machine is connected by an air branch pipe with boiler respectively,
Air control valve, the water inlet phase that the water source passes through feed pump and feed pipe and drum are respectively arranged with every air branch pipe
Connection, is provided with feed-regulating valve, the steam (vapor) outlet of the drum is entered by the steam of steam pipe and steam turbine on feed pipe
Mouth is connected, in addition to internal preset has optimum air-fuel ratio and the automatic burning stove PLC control system of drum safety level, described automatic
Stove PLC control system is burnt to electrically connect with all high coal regulating valve, all air control valves and feed-regulating valve simultaneously, it is described
Automatic stove PLC control system of burning can gather the gas flow in each blast furnace gas branch pipe in real time and calculate the coal gas into boiler
Total amount, while the air mass flow in each air branch pipe can be gathered in real time and calculate the air total amount into boiler, and can root
Each high coal regulating valve and each air control valve are automatically adjusted according to the optimum air-fuel ratio of internal preset, make the coal into boiler
Gas total amount and air total amount meet optimum air-fuel ratio, it is described it is automatic burn stove PLC control system can also gather in real time drum water level,
And feed-regulating valve can be automatically adjusted according to the drum safety level of internal preset, the water level in drum is in all the time
Safety level.
Further, foregoing gas boiler burns furnace control system automatically, wherein:It is respectively provided with each blast furnace gas branch pipe
There is the gas flow meter electrically connected with burning stove PLC control system automatically, automatic stove PLC control system of burning passes through each gas flow meter
The gas flow in each blast furnace gas branch pipe is gathered in real time and calculates the coal gas total amount into boiler.
Further, foregoing gas boiler burns furnace control system automatically, wherein:Be provided with each air branch pipe with
The automatic mass air flow sensor for burning the electrical connection of stove PLC control system, automatic burning stove PLC control system are real-time by each mass air flow sensor
Gather the air mass flow in each air branch pipe and calculate the air total amount into boiler.
Further, foregoing gas boiler burns furnace control system automatically, wherein:It is provided with steam pipe by burning automatically
The steam control valve of stove PLC control system control.
Further, foregoing gas boiler burns furnace control system automatically, wherein:It is provided with steam pipe with burning automatically
The steam-flow meter of stove PLC control system electrical connection, automatic stove PLC control system of burning gather steam in real time by steam-flow meter
Steam flow in pipe.
Further, foregoing gas boiler burns furnace control system automatically, wherein:It is provided with drum and burns stove automatically
The water-level gauge of PLC control system electrical connection, the automatic water level for burning stove PLC control system and gathering drum in real time by water-level gauge.
The implementation of Pass through above-mentioned technical proposal, the beneficial effects of the invention are as follows:(1)Effectively eliminate the pipe of blast furnace gas main pipe
Influence of the net pressure oscillation to burning in boiler stove, will not occur the situation of boiler flue gas incomplete combustion again, not only reduce energy consumption,
And decrease pollution of the blast furnace discharge to environment;(2)The water level in drum 3 is in safety level all the time, greatly improve
The operation stability and security of burning in boiler stove.
Brief description of the drawings
Fig. 1 is the structural representation that gas boiler of the present invention burns furnace control system automatically.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, described gas boiler burns furnace control system automatically, including boiler 1, with the phase of heat exchanger tube 2 in boiler 1
Drum 3, blast furnace gas main pipe 4, some air-introduced machines 5, water source 6 and the generator 8 coaxially connected with steam turbine 7 of connection,
And automatic burning stove PLC control system 9, the blast furnace gas main pipe 4 is connected by some blast furnace gas branch pipes 10 with boiler 1
It is logical, high coal regulating valve 11 is respectively arranged with every blast furnace gas branch pipe 10, every air-introduced machine 5 passes through an air branch respectively
Pipe 12 is connected with boiler 1, and air control valve 13 is respectively arranged with every air branch pipe 12, and the water source 6 passes through feed pump
14 and feed pipe 15 be connected with the water inlet of drum 3, feed-regulating valve 16 is provided with feed pipe 15, the drum 3
Steam (vapor) outlet is connected by steam pipe 17 with the steam inlet of steam turbine 7, it is described it is automatic burn stove PLC control system 9 simultaneously with institute
High coal regulating valve 11, all air control valves 13 and the feed-regulating valve 16 having electrically connect, and the automatic stove PLC that burns controls system
9 internal presets of uniting have optimum air-fuel ratio and drum safety level, and the automatic stove PLC control system 9 of burning can gather each height in real time
Gas flow in producer gas branch pipe 10 simultaneously calculates the coal gas total amount into boiler 1, while can gather each air branch pipe in real time
Air mass flow in 12 simultaneously calculates the air total amount into boiler 1, and can be according to the optimum air-fuel ratio of internal preset to each
High coal regulating valve and each air control valve automatically adjust, and the coal gas total amount made into boiler 1 meets optimal with air total amount
Air-fuel ratio, the automatic burning stove PLC control system 9 can also gather the water level of drum 3 in real time and can be according to the drums of internal preset
Safety level automatically adjusts to feed-regulating valve 16, the water level in drum 3 is in safety level all the time;In the present embodiment
In, gas flow meter 18 is provided with each blast furnace gas branch pipe 10, all gas flow meters 18 control with the automatic stove PLC that burns
System 9 is electrically connected, and automatic stove PLC control system 9 of burning is gathered in each blast furnace gas branch pipe 10 in real time by each gas flow meter 18
Gas flow and calculate the coal gas total amount into boiler 1;In the present embodiment, it is respectively provided with each air branch pipe 12 free
Air-flow gauge 19, all mass air flow sensor 19 electrically connect with automatic stove PLC control system 9 of burning, automatic to burn stove PLC control system 9
Air mass flow in each air branch pipe 12 is gathered by each mass air flow sensor 19 in real time and calculates the air total amount into boiler;
In the present embodiment, the steam control valve 20 controlled by burning stove PLC control system 9 automatically is provided with steam pipe 17;At this
In embodiment, the steam-flow meter 21 electrically connected with burning stove PLC control system 9 automatically is provided with steam pipe 17, it is automatic to burn
Stove PLC control system 9 gathers the steam flow in steam pipe 17 by steam-flow meter 21 in real time;In the present embodiment, in vapour
The water-level gauge 22 electrically connected with burning stove PLC control system 9 automatically is provided with bag 3, automatic stove PLC control system 9 of burning passes through water
Position meter 22 gathers the water level of drum 3 in real time;
The operation principle of the present invention is as follows:
During work, coal gas in blast furnace gas main pipe 4 enters boiler 1 by each blast furnace gas branch pipe 10, while air-introduced machine 5 is by sky
Gas enters boiler by each air branch pipe 12, coal gas is changed pipe 2 with air combustion heating in boiler, while feed pump 14 can incite somebody to action
The water at water source 6 constantly enters drum 3 by feed pipe 15, changes pipe 2 through overheat again into the water in drum 3, water changes pipe 2 through overheat
After can be heated to form superheated steam and return in drum 3, then enter steam turbine 7 from steam pipe 17, make the drawing generator 8 of steam turbine 7
Generated electricity;In whole work process, automatic stove PLC control system 9 of burning gathers each height in real time by each gas flow meter 18
Gas flow in producer gas branch pipe 10 simultaneously calculates the coal gas total amount into boiler 1 while real by each mass air flow sensor 19
When gather the air mass flow in each air branch pipe 12 and calculate the air total amount into boiler 1, and can be according to internal preset
Optimum air-fuel ratio each high coal regulating valve 11 and each air control valve 13 are automatically adjusted, make the coal gas into boiler 1 total
Amount meets optimum air-fuel ratio with air total amount, and the ductwork pressure that so can effectively eliminate blast furnace gas main pipe is fluctuated to burning in boiler
The influence of stove, will not occur the situation of boiler flue gas incomplete combustion again, not only reduce energy consumption, and decrease high fire grate
It is rivals in a contest the pollution of environment;And the water level of drum 3 can also be gathered in real time and according to internal preset by burning stove PLC control system 9 automatically
Drum safety level feed-regulating valve 16 is automatically adjusted, the water level in drum 3 is in safety level all the time, significantly
Improve the operation stability and security of burning in boiler stove.
Claims (8)
1. gas boiler burns furnace control system automatically, it is characterised in that:The vapour being connected including boiler, with heat exchanger tube in boiler
Bag, blast furnace gas main pipe, some air-introduced machines, water source and the generator coaxially connected with steam turbine, the blast furnace gas are total
Pipe is connected by some blast furnace gas branch pipes with boiler, and high coal regulation is respectively arranged with every blast furnace gas branch pipe
Valve, every air-introduced machine are connected by an air branch pipe with boiler respectively, and air tune is respectively arranged with every air branch pipe
Valve is saved, the water source is connected by feed pump and feed pipe with the water inlet of drum, and feedwater regulation is provided with feed pipe
Valve, the steam (vapor) outlet of the drum is connected by steam pipe with the steam inlet of steam turbine, in addition to internal preset has optimal sky
The automatic burning stove PLC control system of combustion when drum safety level, it is described it is automatic burn stove PLC control system simultaneously with all height
Coal regulating valve, all air control valves and feed-regulating valve electrical connection, the automatic stove PLC control system of burning can gather in real time
Gas flow in each blast furnace gas branch pipe simultaneously calculates the coal gas total amount into boiler, while can gather each air branch pipe in real time
In air mass flow and calculate the air total amount into boiler, and can be according to the optimum air-fuel ratio of internal preset to each high coal
Regulating valve and each air control valve automatically adjust, and the coal gas total amount into boiler is met optimal air-fuel with air total amount
Than the automatic burning stove PLC control system can also gather the water level of drum in real time and can be according to the drum safe water of internal preset
Position automatically adjusts to feed-regulating valve, the water level in drum is in safety level all the time.
2. gas boiler according to claim 1 burns furnace control system automatically, it is characterised in that:In each blast furnace gas branch pipe
On be provided with burning the gas flow meter that electrically connect of stove PLC control system automatically, automatic burning stove PLC control system passes through each coal
Air-flow gauge gathers the gas flow in each blast furnace gas branch pipe and calculates the coal gas total amount into boiler in real time.
3. gas boiler according to claim 1 or 2 burns furnace control system automatically, it is characterised in that:In each air branch pipe
On be provided with burning the mass air flow sensor that electrically connect of stove PLC control system automatically, automatic burning stove PLC control system passes through each sky
Air-flow gauge gathers the air mass flow in each air branch pipe and calculates the air total amount into boiler in real time.
4. gas boiler according to claim 1 or 2 burns furnace control system automatically, it is characterised in that:Set on steam pipe
It is equipped with the steam control valve by burning the control of stove PLC control system automatically.
5. gas boiler according to claim 4 burns furnace control system automatically, it is characterised in that:It is provided with steam pipe
It is real-time by steam-flow meter with the automatic steam-flow meter for burning stove PLC control system and electrically connecting, automatic burning stove PLC control system
Gather the steam flow in steam pipe.
6. gas boiler according to claim 3 burns furnace control system automatically, it is characterised in that:It is provided with steam pipe
By the steam control valve for burning the control of stove PLC control system automatically.
7. gas boiler according to claim 6 burns furnace control system automatically, it is characterised in that:It is provided with steam pipe
It is real-time by steam-flow meter with the automatic steam-flow meter for burning stove PLC control system and electrically connecting, automatic burning stove PLC control system
Gather the steam flow in steam pipe.
8. gas boiler according to claim 1 or 2 burns furnace control system automatically, it is characterised in that:Set in drum
There is the water-level gauge electrically connected with burning stove PLC control system automatically, automatic stove PLC control system of burning gathers vapour in real time by water-level gauge
The water level of bag.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710599024.7A CN107355813A (en) | 2017-07-21 | 2017-07-21 | Gas boiler burns furnace control system automatically |
Applications Claiming Priority (1)
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CN201710599024.7A CN107355813A (en) | 2017-07-21 | 2017-07-21 | Gas boiler burns furnace control system automatically |
Publications (1)
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CN107355813A true CN107355813A (en) | 2017-11-17 |
Family
ID=60285325
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CN201710599024.7A Pending CN107355813A (en) | 2017-07-21 | 2017-07-21 | Gas boiler burns furnace control system automatically |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109184840A (en) * | 2018-09-29 | 2019-01-11 | 四川德胜集团钒钛有限公司 | Saturated steam generating set control system and control method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202993157U (en) * | 2012-12-25 | 2013-06-12 | 陕西奥托科技发展有限公司 | Steam boiler controlled by programmable logic controller (PLC) |
CN104197324A (en) * | 2014-09-24 | 2014-12-10 | 北京中科润东节能技术有限公司 | Combustion optimization regulating and controlling method and device of fluidized bed boiler |
CN105485716A (en) * | 2015-12-25 | 2016-04-13 | 中冶南方工程技术有限公司 | Blast furnace gas combustion control method |
CN105627356A (en) * | 2015-12-31 | 2016-06-01 | 北京和隆优化科技股份有限公司 | Combustion optimization control system of metallurgical gas boiler |
CN207214122U (en) * | 2017-07-21 | 2018-04-10 | 江苏永钢集团有限公司 | Gas boiler burns furnace control system automatically |
-
2017
- 2017-07-21 CN CN201710599024.7A patent/CN107355813A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202993157U (en) * | 2012-12-25 | 2013-06-12 | 陕西奥托科技发展有限公司 | Steam boiler controlled by programmable logic controller (PLC) |
CN104197324A (en) * | 2014-09-24 | 2014-12-10 | 北京中科润东节能技术有限公司 | Combustion optimization regulating and controlling method and device of fluidized bed boiler |
CN105485716A (en) * | 2015-12-25 | 2016-04-13 | 中冶南方工程技术有限公司 | Blast furnace gas combustion control method |
CN105627356A (en) * | 2015-12-31 | 2016-06-01 | 北京和隆优化科技股份有限公司 | Combustion optimization control system of metallurgical gas boiler |
CN207214122U (en) * | 2017-07-21 | 2018-04-10 | 江苏永钢集团有限公司 | Gas boiler burns furnace control system automatically |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109184840A (en) * | 2018-09-29 | 2019-01-11 | 四川德胜集团钒钛有限公司 | Saturated steam generating set control system and control method |
CN109184840B (en) * | 2018-09-29 | 2021-11-26 | 四川德胜集团钒钛有限公司 | Saturated steam generator set control system and control method |
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Application publication date: 20171117 |