CN104775022B - Combustion-supporting fan linkage control system and method - Google Patents
Combustion-supporting fan linkage control system and method Download PDFInfo
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- CN104775022B CN104775022B CN201410018031.XA CN201410018031A CN104775022B CN 104775022 B CN104775022 B CN 104775022B CN 201410018031 A CN201410018031 A CN 201410018031A CN 104775022 B CN104775022 B CN 104775022B
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Abstract
The invention discloses a combustion-supporting fan linkage control system and method, wherein the system includes an air pressure detection device, a throttle control device, a power control unit, a human-computer interaction interface and a PLC device. The PLC device controls an opening degree of throttles of combustion-supporting fans according to an air pressure value outputted by the air pressure detection device and judges whether a supplemental combustion-supporting fan is required to be started or a running combustion-supporting fan is required to be stopped according to the air pressure value and the opening degree of the throttles. According to the system and the method, the waste of electric energy brought because the best starting number of the combustion-supporting fans cannot be determined is reduced, at the same time, the choice difficulty of the combustion-supporting fans during load fluctuation is overcome, and the work load of operators is reduced.
Description
Technical field
The present invention relates to heating furnace meter Automated condtrol, the more particularly to control of heating furnace combustion fan.
Background technology
Effectively to heat to slab, hot rolling mill can typically configure many bar plate heating stoves, generally using Mixture Density Networks
Gas is used as fuel.To realize ideal burning, it is necessary to which the air capacity for being configured with combustion fan to provide continuous-stable realizes target empty
Combustion is than control.Under normal circumstances every heating furnace correspondence is configured with 2 combustion fans, configuration mode as shown in figure 1, air quantity it is big
It is little by damper aperture realizing, on the one hand guarantee the demand of air quantity during big load, the configuration that still further aspect is 2 is also convenient for
Safeguard and switch.It is such be configured in one combustion fan of every heating furnace cannot provide enough air quantity, with two it is combustion-supporting
Blower fan there are many air quantity more than needed again in the case that, the waste of the energy can be caused.When being especially equipped with many heating furnaces, than if any
3 heating furnaces, 6 combustion fans, when a heating furnace can not meet demand with a combustion fan, it is necessary to which 6 are helped
Combustion blower fan is all turned on, and the waste of the energy just becomes apparent from.
In order to solve this problem, the pipeline flowing of combustion fan is improved, the such as Fig. 2 of the configuration mode after improvement
It is shown.Without strict corresponding relation between combustion fan and heating furnace, but the pipeline that combustion fan is exported is connected to into one
Rise, provide air quantity for many heating furnaces jointly.So can neatly be selected to need what is started according to the demand of load and maintenance
Blower fan.Than if any 3 heating furnaces, 6 combustion fans, when a heating furnace can not meet demand with a combustion fan, can
According to circumstances only to open 4 or 5 combustion fans, and without 6 are all turned on.It is simultaneously also cleverer in terms of maintenance
It is living.So not only reduce power consumption but also facilitate the maintenance and switching of combustion fan.
With the use of such configuration mode, a difficult problem is gradually exposed, i.e., how to select most preferably opening for combustion fan
Dynamic number, could realize optimal energy-saving effect in the case where technological requirement and load variations is met.Actual operating mode is not
Disconnected change, with the fluctuation of load, the aperture of air door also can and then fluctuate, once too many, the throttle opening that load increases
Still demand cannot be effectively met when being adjusted to maximum, it is necessary to restart a combustion fan.Once load is reduced too
Many, air quantity still has more than needed when throttle opening is adjusted to minimum, it is necessary to stop a combustion fan.If heating furnace load becomes
Change frequently certainly will bring difficulty to the selection of combustion fan and control, while also increasing the workload of operating personnel.It is real
When border operates, generally to ensure that safe, operating personnel usually preferentially guarantee high level, such as current operating mode is opened 4 and helped
Combustion blower fan is more reasonable, and the aperture of air door is bigger than normal 60% or so, and now operating personnel typically can select to open 5 combustion fans,
Because accordingly even when load have fluctuation also without worry deficiency in draught, as air quantity more than needed, by heating furnace itself
The regulation of flow is controlling.Although this strategy for guaranteeing high level ensure that the work that is sufficient and reducing operating personnel of air quantity
Measure, but the waste of the energy can be caused.
The content of the invention
It is an object of the present invention in order to solve the above-mentioned problems in the prior art, and propose a kind of combustion air
Machine coordinated control system and method.
In one aspect of the invention, a kind of combustion fan coordinated control system is disclosed, the system includes, air pressure
Detection means, damper control, power control, human-computer interaction interface and PLC device, it is characterised in that
The air pressure detection means is arranged on combustion fan connection house steward, and the of its output port and the PLC device
One input port is communicated to connect, and the air pressure detection means is used for the air pressure that real-time detection combustion fan connects house steward,
And in real time export the air pressure value that combustion fan connects house steward to the PLC device；
The input port of the damper control is communicated to connect with the first output port of the PLC device, the airdoor control
The output port of device is communicated to connect with the second input port of the PLC device, the damper control in the PLC device the
The throttle opening of every combustion fan is independently controlled under the control of the output signal of one output port, and will be helped per platform
The throttle opening output of combustion blower fan is to the PLC device；
The input port of the power control is communicated to connect with the second output port of the PLC device, the power supply
Device carries out independent control under the control of the output signal of the second output port of the PLC device to the power supply of every combustion fan
System, that is, be turned on and off the power supply of combustion fan；
The input port of the human-computer interaction interface is communicated to connect with the 3rd output port of the PLC device, the man-machine interaction
The output port at interface is communicated to connect with the 3rd input port of the PLC device, to realize the friendship of the PLC device and operating personnel
Mutually；
And, the first input port of the PLC device is communicated to connect with the output port of the air pressure detection means, should
Second input port of PLC device is communicated to connect with the output port of the damper control, the 3rd input of the PLC device
Mouth is communicated to connect with the output port of the human-computer interaction interface, the first output port and the damper control of the PLC device
Input port communication connection, the second output port of the PLC device communicates to connect with the input port of the power control,
3rd output port of the PLC device is communicated to connect with the input port of the human-computer interaction interface.
In another aspect of the present invention, a kind of method of combustion fan coordinated signals is disclosed, the method includes regulation and control
Process P21 of combustion fan throttle opening, the throttle opening of one or more combustion fan that PLC device control is currently running is protected
Hold consistent, it is characterised in that process P21 comprises the steps：
S21. the air pressure of air pressure detection means real-time detection combustion fan connection house steward and by connection house steward
Air pressure value in real time output to the PLC device；
S22. the PLC device judges the air pressure value of connection house steward and the magnitude relationship of air pressure setting value, when
When the PLC device judges that the air pressure value of connection house steward is less than the air pressure setting value, execution step S23-1 is no
Then, execution step S23-2；
S23-1. the PLC device judges the throttle opening and throttle opening of one or more combustion fan being currently running
The magnitude relationship of higher limit, when the PLC device judges that the throttle opening of one or more combustion fan being currently running is little
When the throttle opening higher limit, execution step S24-1, otherwise, implementation procedure P22 is starting an additional combustion fan；
S24-1. the PLC device control damper control causes the air door of one or more combustion fan being currently running
Aperture increases；
S23-2. the PLC device judges the throttle opening and throttle opening of one or more combustion fan being currently running
The magnitude relationship of lower limit, when the PLC device judges that the throttle opening of one or more combustion fan being currently running is big
When the throttle opening lower limit, execution step S24-2, otherwise, implementation procedure P23 is stopping a combustion air being currently running
Machine；
S24-2. the PLC device control damper control causes the air door of one or more combustion fan being currently running
Aperture reduces.
Further, process P22 comprises the steps：
S31. the PLC device output starts the control signal of an additional combustion fan to the power control, should
Power control opens the power supply of an additional combustion fan；
S32-1. the PLC device controls the damper control so that the throttle opening of the additional combustion fan progressively increases
Greatly, to be close to the throttle opening of one or more combustion fan being currently running, when the air door of the additional combustion fan is opened
When degree is consistent with the throttle opening of one or more combustion fan that this is currently running, the PLC device controls the airdoor control dress
Put and cause the throttle opening of the additional combustion fan to stop increase；
S32-2. with step S32-1 simultaneously, the PLC device controls the damper control so that be currently running one
Or the throttle opening of multiple stage combustion fan progressively reduces, until the throttle opening of the additional combustion fan is currently running with this
When the throttle opening of one or more combustion fan is consistent, the PLC device controls the damper control so that this is currently running
One or more combustion fan throttle opening stop reduce；
S33. the air door of one or more combustion fan that the throttle opening of the additional combustion fan is currently running with this
Aperture Synchronization Control.
Further, process P23 comprises the steps：
S41. the PLC device output needs the indication signal for stopping a combustion fan being currently running to man-machine interaction circle
Face；
S42. human-computer interaction interface shows the indication signal, and operating personnel select a combustion fan for preparing to stop, people
The numbering output of the combustion fan that machine interactive interface stops the preparation is to the PLC device；
S43. the PLC device control the damper control so that the throttle opening of combustion fan that stops of the preparation gradually
Reduce until completely closing；
S44. the PLC device controls the power supply that the power control closes the combustion fan that the preparation stops.
Preferably, the air pressure setting value is 7Kpa～10Kpa, and the throttle opening higher limit is 60%～85%, the wind
Door aperture lower limit is 25%～45%.
Preferably, the PLC device control the damper control so that the throttle opening of the additional combustion fan progressively
Increase, the PLC device controls the damper control so that the throttle opening of one or more combustion fan being currently running
Progressively reduce.
Preferably, the speed that the throttle opening of the additional combustion fan is incrementally increased is 0.1 °～0.2 °/s, described
The speed that the throttle opening of one or more combustion fan being currently running progressively reduces is 0.1 °～0.2 °/s.
Preferably, the PLC device controls the damper control so that the throttle opening of the combustion fan of preparation stopping
Progressively reduce.
Preferably, the speed that the throttle opening of the combustion fan for preparing to stop progressively reducing is 0.1 °～0.2 °/s.
The combustion fan coordinated control system and method for the present invention, the air door for automatically controlling combustion fan with PLC device is opened
Degree, and the optimal combustion fan number that automatic discrimination is currently needed for, realize the coordinated signals of combustion fan, reduce due to combustion-supporting
The optimum start-up number of blower fan cannot determine the waste of the electric energy for bringing, while overcoming combustion fan choosing when load fluctuates
Difficulty is selected, and greatly reduces the workload of operating personnel.
It should be noted that each above-mentioned process can be mutually overlapping or mutually include and above-mentioned is each
The order of individual step can be overturned or exchanged.
Description of the drawings
Fig. 1 is the strict corresponding configuration mode schematic diagram of combustion fan and heating furnace of prior art；
The configuration mode schematic diagram that Fig. 2 is coupled together for the combustion fan wind tube outlet of prior art；
Fig. 3 is the structural representation of the combustion fan coordinated control system of the present invention；
Fig. 4 is the flow chart of the regulation and control combustion fan throttle opening of the present invention；
Fig. 5 is the flow chart of one additional combustion fan of startup of the present invention；
Fig. 6 is the flow chart of one combustion fan being currently running of stopping of the present invention.
Specific embodiment
The combustion fan coordinated control system and method for the present invention, the air door for automatically controlling combustion fan with PLC device is opened
Degree, and the optimal combustion fan number that automatic discrimination is currently needed for, realize the coordinated signals of combustion fan.
Specifically, it is the structural representation of the combustion fan coordinated control system of the present invention with reference to Fig. 3.The present invention's helps
Combustion fan linkage control system, including air pressure detection means, damper control, power control, man-machine interaction circle
Face and PLC device.
Air pressure detection means is arranged on combustion fan connection house steward, and its output port is defeated with the first of PLC device
Inbound port 11 is communicated to connect, and air pressure detection means is used for the air pressure that real-time detection combustion fan connects house steward, and will
Combustion fan is exported to the first input port 11 of PLC device when connecting the air pressure value Real-time of house steward.
The input port of damper control is communicated to connect with the first output port 21 of PLC device, damper control
Output port communicate to connect with the second input port 12 of PLC device, first output end of the damper control in PLC device
The throttle opening of every combustion fan is independently controlled under the control of mouthfuls 21 output signal, and by every combustion fan
Throttle opening output to PLC device the second input port 12.
The input port of power control is communicated to connect with the second output port 22 of PLC device, power control
The power supply of every combustion fan is independently controlled under the control of the output signal of the second output port 22 of PLC device,
It is turned on and off the power supply of combustion fan.
The input port of human-computer interaction interface is communicated to connect with the 3rd output port 23 of PLC device, human-computer interaction interface
Output port communicate to connect with the 3rd input port 13 of PLC device, to realize interacting for the system and operating personnel.
The first input port 11 of PLC device is communicated to connect with the output port of air pressure detection means, PLC device
Second input port 12 is communicated to connect with the output port of damper control, the 3rd input port 13 of PLC device with it is man-machine
The output port communication connection of interactive interface, the first output port 21 and the input port of damper control of PLC device lead to
Letter connection, the second output port 22 and the input port of power control of PLC device are communicated to connect, and the 3rd of PLC device the
Output port 23 is communicated to connect with the input port of human-computer interaction interface.
Coordinated signals are carried out to combustion fan with above-mentioned combustion fan coordinated control system, its core is with PLC device pair
Combustion fan is controlled.Control of the PLC device to combustion fan is described below by taking three processes as an example.Three process difference
For：Process P21 of regulation and control combustion fan throttle opening, starts process P22 of an additional combustion fan, is stopping one
The P23 excessively of the combustion fan of operation.
Process P21 is the process for regulating and controlling combustion fan throttle opening.The process is the control process of normality, and it is in First
When combustion fan is opened, just terminate after last combustion fan stops.
Specifically, with reference to Fig. 4, process P21 comprises the steps：Step S21, air pressure detection means real-time detection is helped
The air pressure of combustion blower fan connection house steward simultaneously in real time exports the air pressure value of connection house steward to the PLC device；Step
S22, the PLC device judges the air pressure value of connection house steward and the magnitude relationship of air pressure setting value, when the PLC device
Execution step S23-1 when judging that the air pressure value of connection house steward is less than the air pressure setting value, otherwise, execution step
S23-2；Step S23-1, the PLC device judges that the throttle opening of one or more combustion fan being currently running is opened with air door
The magnitude relationship of degree higher limit, when the PLC device judges the throttle opening of one or more combustion fan being currently running
During less than the throttle opening higher limit, execution step S24-1, otherwise, implementation procedure P22 is starting an additional combustion air
Machine；Step S24-1, the PLC device control damper control causes the air door of one or more combustion fan being currently running
Aperture increases；Step S23-2, the PLC device judges the throttle opening and wind of one or more combustion fan being currently running
The magnitude relationship of door aperture lower limit, when the PLC device judges the air door of one or more combustion fan being currently running
When aperture is more than the throttle opening lower limit, execution step S24-2, otherwise, implementation procedure P23 is currently running with stopping one
Combustion fan；Step S24-2, the PLC device control damper control causes one or more combustion fan being currently running
Throttle opening reduce.Also, under the control of PLC device, the throttle opening of the combustion fan being currently running is consistent.
Process P22 is the process for starting an additional combustion fan.Specifically, with reference to Fig. 5, process P22 includes as follows
Step：Step S31, PLC device output starts the control signal of an additional combustion fan to power control, power supply control
Device processed opens the power supply of an additional combustion fan；After the electric power starting of additional combustion fan, step S32-1, PLC
Device control damper control causes the throttle opening of additional combustion fan to incrementally increase, with helping of being close to that this is currently running
The throttle opening of combustion blower fan, at the same time, step S32-2, PLC device controls the damper control so that what this was currently running
The throttle opening of combustion fan progressively reduces；Step S33, until throttle opening and this of the additional combustion fan are currently running
Combustion fan throttle opening it is consistent when, PLC device start the throttle opening of the additional combustion fan of Synchronization Control with
The throttle opening of the combustion fan of operation.
During an additional combustion fan is started, if the throttle opening increase of additional combustion fan is too fast
Or the throttle opening reduction of the combustion fan being currently running is too fast, can all cause the fluctuation of the air pressure of connection house steward, from
And burning quality can be affected.Therefore, the speed and the combustion fan being currently running of the throttle opening increase of additional combustion fan
The speed that reduces of throttle opening be key in process P22.Preferably, PLC device controls the damper control and causes this
The throttle opening of additional combustion fan is incrementally increased, and PLC device controls the damper control so that the helping of being currently running
The throttle opening of combustion blower fan progressively reduces.Preferably, the speed that the throttle opening of additional combustion fan is incrementally increased is 0.1 °
～0.2 °/s, the speed that the throttle opening of one or more combustion fan being currently running progressively reduces is 0.1 °～0.2 °/s.
Wherein, progressively reduce can be according to PID for throttle opening（PID）Control strategy is continuously carried out.In the above described manner in mistake
The control of throttle opening is carried out in journey P22, the fluctuation of air pressure can be effectively prevented from, ensured burning quality.
Process P23 is the process for stopping a combustion fan being currently running.Specifically, with reference to Fig. 6, process P23 includes
Following steps：Step S41, PLC device output needs the indication signal for stopping a combustion fan being currently running to man-machine friendship
Mutual interface；Step S42, human-computer interaction interface shows the indication signal, and operating personnel select a combustion fan for preparing to stop,
Human-computer interaction interface will prepare the numbering output of the combustion fan for stopping to PLC device；Step S43, PLC device controls the air door
Control device causes throttle opening of combustion fan that this that operating personnel select prepares to stop to be progressively smaller until close completely
Close；Step S44, PLC device controls the power supply that the power control closes the combustion fan that the preparation stops.
If it is too fast that the throttle opening for preparing the combustion fan of stopping reduces, the air pressure of connection house steward is easily caused
Reduce too fast, so as to affect burning quality, therefore the control of the speed of the reduction of the throttle opening of the combustion fan for preparing to stop
It is critically important.Preferably, PLC device control damper control causes the throttle opening of the combustion fan for preparing stopping progressively subtracting
It is little.Preferably, the speed that the throttle opening of the combustion fan that preparation stops progressively reducing is 0.1～0.2 degree per second.
In process P23 of the present invention, when PLC device judges that the air pressure value for connecting house steward sets higher than air pressure
Definite value, and the throttle opening of the combustion fan being currently running, when being less than throttle opening lower limit, PLC device is not directly control
Power control processed removes the power supply for closing a combustion fan being currently running, but output needs stopping one to be currently running
Combustion fan indication signal to human-computer interaction interface.This scheme allows for PLC device and is automatically switched off combustion fan to be had
Certain risk, just in case erroneous judgement can cause irredeemable loss to burning quality, so needing exist for operating personnel according to existing
Field situation carries out artificial judgment.
If artificial judgment result also to need to stop a combustion fan being currently running, needs operating personnel in people
Input in machine interactive interface needs the numbering of the combustion fan for stopping to carry out subsequent operation to indicate PLC device.For preparation stops
The selection of combustion fan only, can be arbitrarily designated by operating personnel, it is also possible to be selected according to the situation of combustion fan itself,
The combustion fan for such as selecting working condition bad first stops to overhaul, while air output can also be ensured.
Preferably, in order to ensure the ideal burning of heating furnace fuel, air pressure setting value is 7Kpa～10Kpa, wind
Door aperture higher limit is 60%～85%, and throttle opening lower limit is 25%～45%.These parameters can preset, it is also possible to by
Operating personnel set in real time according to actual conditions such as operating modes.
It should be noted that, although for the consideration for being easy to describe, control of the PLC device to combustion fan has been divided into into mistake
Journey P21, P22 and P23, but these three processes are not isolated, exist between them and mutually overlap mutually or even include mutually.Than
Such as, the step of process P23 in S43, when PLC device control the damper control so that operating personnel select this preparation
The throttle opening of the combustion fan of stopping is progressively smaller until when completely closing that PLC device is also in process P21 for performing its normality
To adjust the throttle opening of the combustion fan being currently running.
Embodiment of above is only the illustrative embodiments of the present invention, is not used in the restriction present invention, the protection of the present invention
Scope is defined by the claims.Those skilled in the art can be in the flesh and blood and protection domain of the present invention, to this
Bright to make various modifications or equivalent, this modification or equivalent also should be regarded as being within the scope of the present invention.
Claims (7)
1. a kind of combustion fan inter-linked controlling method, it is based on combustion fan coordinated control system, and the system includes：Air pressure
Detection means, damper control, power control, human-computer interaction interface and PLC device, wherein,
The air pressure detection means is arranged on combustion fan connection house steward, and its output port is defeated with the first of the PLC device
Inbound port is communicated to connect, and the air pressure detection means is used for the air pressure that real-time detection combustion fan connects house steward, and will
The air pressure value of combustion fan connection house steward is exported in real time to the PLC device；
The input port of the damper control is communicated to connect with the first output port of the PLC device, the damper control
The second input port of output port and the PLC device communicate to connect, the damper control is first defeated the PLC device
The throttle opening of every combustion fan is independently controlled under the control of the output signal of exit port, and by every combustion air
The throttle opening output of machine is to the PLC device；
The input port of the power control is communicated to connect with the second output port of the PLC device, the power control
The power supply of every combustion fan is independently controlled under the control of the output signal of the second output port of the PLC device,
It is turned on and off the power supply of combustion fan；
The input port of the human-computer interaction interface is communicated to connect with the 3rd output port of the PLC device, the human-computer interaction interface
The 3rd input port of output port and the PLC device communicate to connect, to realize interacting for the PLC device and operating personnel；
And, the first input port of the PLC device is communicated to connect with the output port of the air pressure detection means, the PLC
Second input port of device is communicated to connect with the output port of the damper control, the 3rd input port of the PLC device
Communicate to connect with the output port of the human-computer interaction interface, the first output port and the damper control of the PLC device
Input port is communicated to connect, and the second output port of the PLC device is communicated to connect with the input port of the power control, should
3rd output port of PLC device is communicated to connect with the input port of the human-computer interaction interface, it is characterised in that
The method include regulation and control combustion fan throttle opening process P21, PLC device control be currently running one or more help
The throttle opening of combustion blower fan is consistent, it is characterised in that process P21 comprises the steps：
S21. the air pressure of air pressure detection means real-time detection combustion fan connection house steward and by the sky of connection house steward
The output in real time of air pressure force value is to the PLC device；
S22. the PLC device judges the air pressure value of connection house steward and the magnitude relationship of air pressure setting value, as the PLC
Execution step S23-1 when device judges that the air pressure value of connection house steward is less than the air pressure setting value, otherwise, performs
Step S23-2；
S23-1. the PLC device judges the throttle opening and the throttle opening upper limit of one or more combustion fan being currently running
The magnitude relationship of value, judges that the throttle opening of one or more combustion fan being currently running is less than and is somebody's turn to do when the PLC device
During throttle opening higher limit, execution step S24-1, otherwise, implementation procedure P22 is starting an additional combustion fan；
S24-1. the PLC device control damper control causes the throttle opening of one or more combustion fan being currently running
Increase；
S23-2. the PLC device judges the throttle opening and throttle opening lower limit of one or more combustion fan being currently running
The magnitude relationship of value, judges that the throttle opening of one or more combustion fan being currently running is more than and is somebody's turn to do when the PLC device
During throttle opening lower limit, execution step S24-2, otherwise, implementation procedure P23 is stopping a combustion fan being currently running；
S24-2. the PLC device control damper control causes the throttle opening of one or more combustion fan being currently running
Reduce.
2. combustion fan inter-linked controlling method according to claim 1, it is characterised in that process P22 includes as follows
Step：
S31. the PLC device output starts the control signal of an additional combustion fan to the power control, the power supply
Control device opens the power supply of an additional combustion fan；
S32-1. the PLC device controls the damper control so that the throttle opening of the additional combustion fan is incrementally increased,
To be close to the throttle opening of one or more combustion fan being currently running, when the additional combustion fan throttle opening with
When the throttle opening of one or more combustion fan being currently running is consistent, the PLC device controls the damper control to be made
The throttle opening for obtaining the additional combustion fan stops increase；
S32-2. with step S32-1 simultaneously, the PLC device controls the damper control so that be currently running one or many
The throttle opening of platform combustion fan progressively reduces, until one that the throttle opening of the additional combustion fan is currently running with this
Or multiple stage combustion fan throttle opening it is consistent when, the PLC device control the damper control so that this be currently running one
The throttle opening of platform or multiple stage combustion fan stops reducing；
S33. the throttle opening of one or more combustion fan that the throttle opening of the additional combustion fan is currently running with this
Synchronization Control.
3. combustion fan inter-linked controlling method according to claim 1, it is characterised in that process P23 includes as follows
Step：
S41. the PLC device output needs the indication signal for stopping a combustion fan being currently running to human-computer interaction interface；
S42. human-computer interaction interface shows the indication signal, and operating personnel select a combustion fan for preparing to stop, man-machine friendship
Mutually the numbering output of the combustion fan that interface stops the preparation is to the PLC device；
S43. the PLC device controls the damper control so that the throttle opening of the combustion fan of preparation stopping is gradually reduced
Until completely closing；
S44. the PLC device controls the power supply that the power control closes the combustion fan that the preparation stops.
4. combustion fan inter-linked controlling method according to claim 1, it is characterised in that the air pressure setting value is
7Kpa～10Kpa, the throttle opening higher limit is 60%～85%, and the throttle opening lower limit is 25%～45%.
5. combustion fan inter-linked controlling method according to claim 2, it is characterised in that the PLC device controls the air door
Control device causes the throttle opening of the additional combustion fan to incrementally increase with the speed of 0.1 °～0.2 °/s, the PLC dresses
Put control the damper control so that one or more combustion fan being currently running throttle opening with 0.1 °～
The speed of 0.2 °/s progressively reduces.
6. combustion fan inter-linked controlling method according to claim 3, it is characterised in that the PLC device controls the air door
Control device causes the throttle opening of the combustion fan of preparation stopping progressively reducing.
7. combustion fan inter-linked controlling method according to claim 6, it is characterised in that the combustion air that the preparation stops
The speed that the throttle opening of machine progressively reduces is 0.1 °～0.2 °/s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410018031.XA CN104775022B (en) | 2014-01-15 | 2014-01-15 | Combustion-supporting fan linkage control system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410018031.XA CN104775022B (en) | 2014-01-15 | 2014-01-15 | Combustion-supporting fan linkage control system and method |
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| Publication Number | Publication Date |
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| CN104775022A CN104775022A (en) | 2015-07-15 |
| CN104775022B true CN104775022B (en) | 2017-04-26 |
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| CN201410018031.XA Active CN104775022B (en) | 2014-01-15 | 2014-01-15 | Combustion-supporting fan linkage control system and method |
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| CN108277337A (en) * | 2018-02-27 | 2018-07-13 | 首钢京唐钢铁联合有限责任公司 | A kind of vertical continuous annealing furnace control method |
| CN114350867A (en) * | 2022-01-10 | 2022-04-15 | 广东韶钢松山股份有限公司 | Blast furnace operation system and combustion fan switching method |
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| CN87207125U (en) * | 1987-06-01 | 1988-08-17 | 西麓乡日用电器厂 | Energy-saving control device for water pump |
| CN103090410A (en) * | 2013-02-01 | 2013-05-08 | 莱芜钢铁集团电子有限公司 | Combustion air pressure control method, device and system for heating furnace |
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2014
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87207125U (en) * | 1987-06-01 | 1988-08-17 | 西麓乡日用电器厂 | Energy-saving control device for water pump |
| CN103090410A (en) * | 2013-02-01 | 2013-05-08 | 莱芜钢铁集团电子有限公司 | Combustion air pressure control method, device and system for heating furnace |
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