CN109909051A - A kind of cement factory raw material grinding system kiln system control method - Google Patents
A kind of cement factory raw material grinding system kiln system control method Download PDFInfo
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- CN109909051A CN109909051A CN201910184788.9A CN201910184788A CN109909051A CN 109909051 A CN109909051 A CN 109909051A CN 201910184788 A CN201910184788 A CN 201910184788A CN 109909051 A CN109909051 A CN 109909051A
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Abstract
The present invention provides a kind of cement factory raw material grinding system kiln system control method applied to clinker production of intelligent control technology field, the kiln system of the cement factory raw material grinding system kiln system control method stops the set-up procedure of feeding amount adjustment method when mill are as follows: enters lag setting delay numerical value after kiln bucket mentions returning ash, control unit, which is controlled, reduces by practical time grey numerical quantity into kiln feeding capacity, control unit, which monitors bucket again and mentions before whether electric current shuts down with raw material grinding system, to maintain an equal level, before if bucket proposes electric current actual numerical value lower than the shutdown of raw material grinding system, then reduce correction factor, maintain an equal level before bucket proposes electric current actual numerical value and raw material grinding system is shut down, cement factory raw material grinding system kiln system control method of the present invention, feeding capacity when can stop mill to kiln system is adjusted, to realize automation, intelligent operation, effectively drop The manual intervention of low operator, and by the automatically-monitored of system itself, meet feeding capacity adjust automatically.
Description
Technical field
The invention belongs to clinker production of intelligent control technology fields, are to be related to a kind of cement factory more specifically
Raw material grinding system kiln system control method.
Background technique
Raw material grinding is the master operation of clinker production raw material preparation, and production capacity configuration is generally big compared with kiln production capacity,
There is certain production capacity more than needed.Each cement production enterprise can be reasonable to arrange according to the warehouse compartment of homogenizing storehouse and the difference of time-of-use tariffs
Raw material mill keeps away peak production, reaches energy-efficient purpose.Shut down since raw material is ground, grey temperature that kiln tail was gathered dust return is higher, can accelerate into
Library bucket proposes adhesive tape aging, therefore, when raw material grinds shutdown, mentions adhesive tape for protection storage bucket, can be delivered to time ash and mention into kiln bucket,
It just needs to be adjusted kiln feeding capacity when stopping mill in this way.At the same time, because of raw material grinding system fan parking, to kiln
Systematic air flow has large effect, needs high-temperature blower adjustment revolving speed to increase absorbing quantity, it is ensured that outlet pressure is stablized.Raw material mill
When system opens mill sequence of movement again in turn, in this way, needing operator timely to kiln system when raw material grinding system start-stop is ground
Feeding capacity and be adjusted with air quantity.In this way, start-stop mill operator will expend a large amount of energy to carry out system tune every time
Whole, simultaneously because operator's adjustment is substantially according to the experience of oneself, everyone strategy and adjustment amplitude is variant, will lead to
System has biggish fluctuation.Therefore, the operation of start-stop mill is the main bottleneck for restricting the online rate of expert system.
Summary of the invention
The technical problems to be solved by the present invention are: it is simple to provide a kind of step, operator's labor intensity can be reduced, is increased
Adding system adjustment and running stability reduce the fluctuation in system operation procedure caused by operator judges according to personal experience,
Manipulation accuracy is improved, the cement factory raw material grinding system kiln system control of cement factory raw material grinding system operational reliability is met
Method.
Solve the problems, such as techniques discussed above, the technical scheme adopted by the invention is as follows:
The present invention is a kind of cement factory raw material grinding system kiln system control method, the cement factory raw material grinding system
Kiln system control method includes that kiln system stops feeding amount adjustment method when mill, and the kiln system stops feeding amount adjustment method when mill
Set-up procedure are as follows: the shutdown of raw material grinding system finishes, and operator prepares to stop storage bucket when mentioning, and library bucket is mentioned pneumatic operated valve and closed by operator
It closes, library bucket mentions pneumatic operated valve to control unit feedback signal, and control unit triggers back ash and enters the judgement of kiln condition, by returning grey machine for zipper
Current values are calculated reality and return grey numerical quantity, enter kiln bucket according to time ash and mention delay numerical value, enter kiln bucket in time ash
Lag setting delay numerical value after mentioning, control unit, which is controlled, returns grey numerical quantity into kiln feeding capacity reduction reality, and control unit monitors again
Whether bucket mentions electric current preceding fair with the shutdown of raw material grinding system, if before bucket proposes electric current actual numerical value lower than the shutdown of raw material grinding system,
Correction factor is then reduced, is maintained an equal level before bucket proposes electric current actual numerical value and raw material grinding system is shut down；If bucket mentions electric current actual number
Before value is higher than the shutdown of raw material grinding system, then increase correction factor, before bucket proposes electric current actual numerical value and raw material grinding system is shut down
Maintain an equal level.
The cement factory raw material grinding system kiln system control method further includes that raw material grinding system kiln system is fed when opening mill
Doses method of adjustment, the set-up procedure of feeding amount adjustment method when the raw material grinding system kiln system opens mill are as follows: raw material mill behaviour
Make personnel and start homogenizing storehouse top and storage conveying equipment, starting raw material grinds auxiliary system, starts circulating fan, and starting raw material mill is outer
The circulatory system, starting raw material grind main motor, start feed system, while adjust valve opening, grinding pressure, powder concentrator revolving speed and
For feeding capacity to the state that sets, raw material mill operator and kiln operator, which link up, at this time carries out back ash switching, former after obtaining answer
Material mill operator, which will return ash and be put in storage pneumatic flashboard, to open, return it is grey be put in storage, system receives after pneumatic operated valve opens limit, trigger
It executes, is Xt/h by returning grey machine for zipper electric current flow is calculated, kiln feeding capacity is increased Xt/h automatically, monitored into kiln by system
Bucket proposes current conditions, after bucket mentions operation lap time, if bucket mentions electric current than low YA before switching, before illustrating feeding capacity than switching
Low, being calculated from the formula correction value is Zt/h, then feeding capacity need to be further added by Zt/h, until bucket is held before proposing current values and switching
It is flat, into normal manipulation mode.Step operation in the prior art is manually completed by operator, and automatic behaviour is realized in the present invention
Make.For above-mentioned steps, be exemplified below: system receives after pneumatic operated valve opens limit, and trigger executes, and returns ash for example, passing through
It is 11.5t/h that flow, which is calculated, in machine for zipper electric current, and kiln feeding capacity is increased 11.5t/h automatically, monitors and mention electricity into kiln bucket by system
Situation is flowed, bucket, which mentions, runs a time general 4m enclosed, if bucket mentions electric current than low 1A before switching after 2m, illustrates that feeding capacity ratio is cut
Low before changing, being calculated from the formula correction value is 3.5t/h, then feeding capacity need to be further added by 3.5t/h, until bucket mention current values with
It remains basically stable before switching, into normal manipulation mode.In this way, mill air quantity is opened in convenient and reliable realization adjusts control.
The cement factory raw material grinding system kiln system control method further includes that raw material grinding system kiln system stops wind when mill
Amount adjustment method, the raw material grinding system kiln system stop the set-up procedure of air flow adjusting method when mill are as follows: when operator is controlled
When the grinding roller of raw material mill processed rises, control unit controls kiln system blower valve and closes to 5% hereinafter, system fan electric current is lower than
System fan current standard numerical value triggers high-temperature blower air quantity regularization condition at this time, if after kiln system blower valve is closed
High-temperature blower inlet pressure rolls average value numerical value before high-temperature blower inlet pressure actual numerical value is triggered lower than regularization condition, then controls
Component controls processed increase high-temperature blower revolving speed, the high-temperature blower inlet pressure actual numerical value after the closing of kiln system blower valve
Reach before regularization condition triggers until high-temperature blower inlet pressure rolling average value numberical range, if kiln system blower valve closes
High-temperature blower inlet pressure actual numerical value after closing is higher than high-temperature blower inlet pressure before regularization condition triggers and rolls average value number
Value, then control unit control reduce high-temperature blower revolving speed, the high-temperature blower inlet pressure after the closing of kiln system blower valve
Actual numerical value reaches before regularization condition triggers until high-temperature blower inlet pressure rolling average value numberical range.
The cement factory raw material grinding system kiln system control method further includes wind when raw material grinding system kiln system opens mill
Amount adjustment method, the set-up procedure of air flow adjusting method when the raw material grinding system kiln system opens mill are as follows: raw material grinds operator
Member starting homogenizing storehouse top and storage conveying equipment, starting raw material grind auxiliary system, start circulating fan, and starting raw material grinds outer circulation
System, starting raw material grind main motor, start feed system, adjust circulating fan inlet valve aperture, work as valve opening > 50% and
When circulating fan electric current is greater than 200A, trigger is executed, and judges high-temperature blower outlet pressure and the variation of preheater outlet pressure,
Reduce high-temperature blower revolving speed 5rpm, if the pressure is higher, then 5rpm drops, until the pressure and open grind before remain basically stable, simultaneously
Minimum speed limitation is set, rotation speed of fan is not less than the revolving speed when reducing, after adjustment, into normal operating state.
When practical time grey numerical quantity is calculated by returning grey machine for zipper electric current, the practical calculation formula for returning grey numerical quantity
Are as follows: practical to return ash numerical quantity=10+ (returning ash machine for zipper current values -20) * 2.5+ correction factor, correction factor is according to entering kiln bucket
Electric current is mentioned to be modified.
Returning ash to enter kiln bucket to mention delay numerical value is 2S, after time ash enters and lags 2S after kiln bucket mentions, control unit control
It makes and reduces by practical time grey numerical quantity into kiln feeding capacity, after time ash enters and lags 2S after kiln bucket mentions, control unit monitors bucket and mentions
Whether electric current actual numerical value maintains an equal level before shutting down with raw material grinding system.
When control unit control reduces high-temperature blower revolving speed, 5rpm is adjusted every time, after the closing of kiln system blower valve
High-temperature blower inlet pressure actual numerical value reach regularization condition trigger before high-temperature blower inlet pressure roll average value numerical value model
Until enclosing；When control unit control improves high-temperature blower revolving speed, 5rpm is adjusted every time, after the closing of kiln system blower valve
High-temperature blower inlet pressure actual numerical value reaches high-temperature blower inlet pressure before regularization condition triggers and rolls average value numberical range
Until.
General cement factory kiln feeding scale configuration is impact flow meter, and flow is a reference, and each factory can basis
Enter the practical feeding capacity of height judgement that kiln bucket mentions electric current, the bucket of 1A mentions electric current and probably corresponds to the flow of 3.5t/h (because of device configuration
Difference, can be variant).Therefore, in control method of the present invention, correction factor=(enter kiln bucket before time ash switching and mention electricity
Enter kiln bucket after fluxion value-time ash switching and propose current values) * 3.5.In this way, being calculated convenient for reliable.
Using technical solution of the present invention, can obtain it is below the utility model has the advantages that
Cement factory raw material grinding system kiln system control method of the present invention, in view of the problems of the existing technology,
The rate-determining steps of the control method through the invention, feeding capacity when can stop mill to kiln system are adjusted, thus real
The manual intervention of operator is effectively reduced in now automation, intelligent operation, and by the automatically-monitored of system itself, meet
Feeding capacity adjust automatically.In this way, set-up procedure is simple, operator's labor intensity can be reduced, increases system call interception and operation is flat
Stability reduces the fluctuation in system operation procedure caused by operator judges according to personal experience, improves manipulation accuracy, meets
Cement factory raw material grinding system operational reliability.
Detailed description of the invention
Brief description is made to content expressed by each attached drawing of this specification and the label in figure below:
Fig. 1 is the structural schematic diagram of cement factory raw material grinding system kiln system of the present invention；
Attached drawing acceptance of the bid note is respectively as follows: 1, system fan；2, kiln tail electricity dust collection device；3, conditioning Tower；4, chain-linked conveyer；5,
Circulating fan；6, screw conveyor；7, grey machine for zipper is returned；8, pneumatic operated valve；9, it is put in storage bucket elevator；10, enter kiln bucket elevator.
Specific embodiment
Below against attached drawing, by the description of the embodiment, to for example related each structure of a specific embodiment of the invention
The works such as the shape of part, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle are further
Detailed description:
As shown in Fig. 1, the present invention is a kind of cement factory raw material grinding system kiln system control method, the cement work
Factory's raw material grinding system kiln system control method includes that kiln system stops feeding amount adjustment method when mill, and the kiln system stops feeding when mill
The set-up procedure of doses method of adjustment are as follows: the shutdown of raw material grinding system finishes, and operator prepares to stop storage bucket when mentioning, and operator is by library
Bucket proposes pneumatic operated valve closing, and library bucket mentions pneumatic operated valve to control unit feedback signal, and control unit triggers back ash and enters the judgement of kiln condition, leads to
It crosses back grey machine for zipper current values and practical time grey numerical quantity is calculated, kiln bucket is entered according to time ash and mentions delay numerical value, is being returned
Ash enters to lag setting delay numerical value after kiln bucket mentions, and control unit, which is controlled, reduces practical time grey numerical quantity, control into kiln feeding capacity
Component processed, which monitors bucket again and mentions before whether electric current shuts down with raw material grinding system, to maintain an equal level, if bucket proposes electric current actual numerical value and grinds lower than raw material
Before system-down, then correction factor is reduced, maintained an equal level before bucket proposes electric current actual numerical value and raw material grinding system is shut down；If bucket mentions
Before electric current actual numerical value is higher than the shutdown of raw material grinding system, then increase correction factor, until bucket proposes electric current actual numerical value and raw material mill
Maintain an equal level before system-down.In view of the problems of the existing technology, by above-mentioned set-up procedure, when effectively can stop mill to kiln system
Feeding capacity be adjusted, to realize automation, intelligent operation, the manual intervention of operator is effectively reduced, and passes through and is
It unites the automatically-monitored of itself, meets feeding capacity adjust automatically.In this way, set-up procedure is simple, it is strong that operator's labour can be reduced
Degree increases system call interception and running stability, reduces in system operation procedure caused by operator judges according to personal experience
Fluctuation improves manipulation accuracy, meets cement factory raw material grinding system operational reliability.
Cement factory raw material grinding system kiln system control method of the present invention, is not required to change to situ hardware
It makes, carries out program processing using the existing signal measuring point of DCS system.Mainly there is the switch limit signal of pneumatic operated valve, return grey zipper
The operation of the current signal, raw material grinding system blower of machine and current signal, raw material grinding system fans entrance valve opening amount signal,
Raw material grinds grinding roller position signal, high-temperature blower outlet pressure signal.Manually adjusted for operator and expert system adjust mistake
Cheng Jinhang combing, control method of the invention sum up where controlling difficulties: when 1. start-stops are ground, kiln system feeding and air quantity are automatic
How adjusting opportunity judges.2. start-stop, which grinds back ash, enters the how many judgement of kiln amount.3. the start-stop mill kiln system air quantity amplitude of accommodation is sentenced
It is disconnected.On the basis of analyzing above-mentioned controlling difficulties, the present invention proposes effective reply solution.
The cement factory raw material grinding system kiln system control method further includes that raw material grinding system kiln system is fed when opening mill
Doses method of adjustment, the set-up procedure of feeding amount adjustment method when the raw material grinding system kiln system opens mill are as follows: raw material mill behaviour
Make personnel and start homogenizing storehouse top and storage conveying equipment, starting raw material grinds auxiliary system, starts circulating fan, and starting raw material mill is outer
The circulatory system, starting raw material grind main motor, start feed system, while adjust valve opening, grinding pressure, powder concentrator revolving speed and
For feeding capacity to the state that sets, raw material mill operator and kiln operator, which link up, at this time carries out back ash switching, former after obtaining answer
Material mill operator, which will return ash and be put in storage pneumatic flashboard, to open, return it is grey be put in storage, system receives after pneumatic operated valve opens limit, trigger
It executes, is Xt/h by returning grey machine for zipper electric current flow is calculated, kiln feeding capacity is increased Xt/h automatically, monitored into kiln by system
Bucket proposes current conditions, after bucket mentions operation lap time, if bucket mentions electric current than low YA before switching, before illustrating feeding capacity than switching
Low, being calculated from the formula correction value is Zt/h, then feeding capacity need to be further added by Zt/h, until bucket is held before proposing current values and switching
It is flat, into normal manipulation mode.Step operation in the prior art is manually completed by operator, and automatic behaviour is realized in the present invention
Make.For above-mentioned steps, be exemplified below: system receives after pneumatic operated valve opens limit, and trigger executes, and returns ash for example, passing through
It is 11.5t/h that flow, which is calculated, in machine for zipper electric current, and kiln feeding capacity is increased 11.5t/h automatically, monitors and mention electricity into kiln bucket by system
Situation is flowed, bucket, which mentions, runs a time general 4m enclosed, if bucket mentions electric current than low 1A before switching after 2m, illustrates that feeding capacity ratio is cut
Low before changing, being calculated from the formula correction value is 3.5t/h, then feeding capacity need to be further added by 3.5t/h, until bucket mention current values with
It remains basically stable before switching, into normal manipulation mode.In this way, mill air quantity is opened in convenient and reliable realization adjusts control.
The cement factory raw material grinding system kiln system control method further includes that raw material grinding system kiln system stops wind when mill
Amount adjustment method, the raw material grinding system kiln system stop the set-up procedure of air flow adjusting method when mill are as follows: when operator is controlled
When the grinding roller of raw material mill processed rises, control unit controls kiln system blower valve and closes to 5% hereinafter, system fan electric current is lower than
System fan current standard numerical value triggers high-temperature blower air quantity regularization condition at this time, if after kiln system blower valve is closed
High-temperature blower inlet pressure rolls average value numerical value before high-temperature blower inlet pressure actual numerical value is triggered lower than regularization condition, then controls
Component controls processed increase high-temperature blower revolving speed, the high-temperature blower inlet pressure actual numerical value after the closing of kiln system blower valve
Reach before regularization condition triggers until high-temperature blower inlet pressure rolling average value numberical range, if kiln system blower valve closes
High-temperature blower inlet pressure actual numerical value after closing is higher than high-temperature blower inlet pressure before regularization condition triggers and rolls average value number
Value, then control unit control reduce high-temperature blower revolving speed, the high-temperature blower inlet pressure after the closing of kiln system blower valve
Actual numerical value reaches before regularization condition triggers until high-temperature blower inlet pressure rolling average value numberical range.
The cement factory raw material grinding system kiln system control method further includes wind when raw material grinding system kiln system opens mill
Amount adjustment method, the set-up procedure of air flow adjusting method when the raw material grinding system kiln system opens mill are as follows: raw material grinds operator
Member starting homogenizing storehouse top and storage conveying equipment, starting raw material grind auxiliary system, start circulating fan, and starting raw material grinds outer circulation
System, starting raw material grind main motor, start feed system, adjust circulating fan inlet valve aperture, work as valve opening > 50% and
When circulating fan electric current is greater than 200A, trigger is executed, and judges high-temperature blower outlet pressure and the variation of preheater outlet pressure,
Reduce high-temperature blower revolving speed 5rpm, if the pressure is higher, then 5rpm drops, until the pressure and open grind before remain basically stable, simultaneously
Minimum speed limitation is set, rotation speed of fan is not less than the revolving speed when reducing, after adjustment, into normal operating state.
When practical time grey numerical quantity is calculated by returning grey machine for zipper electric current, the practical calculation formula for returning grey numerical quantity
Are as follows: practical to return ash numerical quantity=10+ (returning ash machine for zipper current values -20) * 2.5+ correction factor, correction factor is according to entering kiln bucket
Electric current is mentioned to be modified.
Returning ash to enter kiln bucket to mention delay numerical value is 2S, after time ash enters and lags 2S after kiln bucket mentions, control unit control
It makes and reduces by practical time grey numerical quantity into kiln feeding capacity, after time ash enters and lags 2S after kiln bucket mentions, control unit monitors bucket and mentions
Whether electric current actual numerical value maintains an equal level before shutting down with raw material grinding system.
When control unit control reduces high-temperature blower revolving speed, 5rpm is adjusted every time, after the closing of kiln system blower valve
High-temperature blower inlet pressure actual numerical value reach regularization condition trigger before high-temperature blower inlet pressure roll average value numerical value model
Until enclosing；When control unit control improves high-temperature blower revolving speed, 5rpm is adjusted every time, after the closing of kiln system blower valve
High-temperature blower inlet pressure actual numerical value reaches high-temperature blower inlet pressure before regularization condition triggers and rolls average value numberical range
Until.
General cement factory kiln feeding scale configuration is impact flow meter, and flow is a reference, and each factory can basis
Enter the practical feeding capacity of height judgement that kiln bucket mentions electric current, the bucket of 1A mentions electric current and probably corresponds to the flow of 3.5t/h (because of device configuration
Difference, can be variant).Therefore, in control method of the present invention, correction factor=(enter kiln bucket before time ash switching and mention electricity
Enter kiln bucket after fluxion value-time ash switching and propose current values) * 3.5.In this way, being calculated convenient for reliable.
Feeding capacity set-up procedure embodiment, by taking certain raw material grinding system as an example: by taking raw material grinding system stops mill as an example, working as raw material
Grinding system shutdown finishes, and operator prepares to stop storage bucket when mentioning, and can will enter homogenizing storehouse bucket and propose pneumatic operated valve closing, can trigger back at this time
Ash enters the judgement of kiln condition, and ash quantity such as is calculated back in 13t/h by returning grey machine for zipper electric current, enters kiln bucket according to time ash and mentions
The delay of general 2S will then enter kiln feeding capacity and reduce 13t/h after 2S, after 2m monitoring bucket mention electric current whether with maintain an equal level before switching, if
It is low, then reduce correction factor；Such as height, then increase correction factor.
Air quantity set-up procedure embodiment, by taking certain raw material grinding system as an example: by taking raw material grinding system stops mill as an example, when raw material is ground
Roller rises, and system fan valve is closed to 5% hereinafter, system fan electric current can trigger high-temperature blower air quantity lower than 200A at this time
Adjustable strategies, high-temperature blower inlet pressure rolls average value before being triggered according to the condition, such as current generally probably in -1800Pa
Value is -2000Pa, then needs to increase high-temperature blower revolving speed, because the adjustment of high-temperature blower revolving speed is larger to systematic influence, while being required again
System quick response, therefore the limitation of every successive step 5rpm is set, the high-temperature blower after the closing of kiln system blower valve enters
Mouth pressure actual numerical value reaches target value -1800Pa or so, carries out speed control by the O2 content target of original setting.
Cement factory raw material grinding system kiln system control method of the present invention, start-stop grind kiln system feeding and adjust opportunity
Judgement, according to enter homogenizing storehouse bucket mention pneumatic operated valve switch limit plus material conveying delay time judged；Kiln system
Air quantity adjusts the judgement on opportunity, according to raw material grinding system blower electric current and inlet baffle aperture, carries out in conjunction with raw material grinding roller position
Comprehensive descision.Start-stop grinds back the calculating of ash quantity, calculates according to grey machine for zipper electric current is returned, and set interval increases correction factor and carries out
Correction, calculates back ash quantity, proposes current value progress comprehensively control in combination with kiln bucket is entered before switching.For example, normal operating current
Low value is 20A, and normal operating current high level is 22A, combined kiln feeding capacity and enters kiln bucket and proposes the analysis of current history data, returns ash
Amount returns grey machine for zipper 1A electric current and corresponds to the ash that returns of 2.5t/h between 10-15t/h, therefore returns ash quantity=10+ and (return grey zipper
Machine present current value -20) * 2.5+ correction factor.Correction factor is according to entering kiln bucket and mention electric current to be modified.The adjustment of kiln system air quantity
The calculating of amplitude rolls average value according to high-temperature blower outlet pressure, as target value, sentences in conjunction with preheater outlet O2 content
The disconnected kiln system air quantity amplitude of accommodation, controls high-temperature blower revolving speed, it is ensured that high-temperature blower outlet pressure is stablized, and kiln system operating condition is reduced
Fluctuation, to effectively improve the intelligentized control method of kiln system.
Cement factory raw material grinding system kiln system control method of the present invention, in view of the problems of the existing technology,
The rate-determining steps of the control method through the invention, feeding capacity when can stop mill to kiln system are adjusted, thus real
The manual intervention of operator is effectively reduced in now automation, intelligent operation, and by the automatically-monitored of system itself, meet
Feeding capacity adjust automatically.In this way, set-up procedure is simple, operator's labor intensity can be reduced, increases system call interception and operation is flat
Stability reduces the fluctuation in system operation procedure caused by operator judges according to personal experience, improves manipulation accuracy, meets
Cement factory raw material grinding system operational reliability.
Above in conjunction with attached drawing, an exemplary description of the invention, it is clear that concrete implementation of the present invention is not by above-mentioned
The limitation of mode, as long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved by this
The conception and technical scheme of invention directly apply to other occasions, are within the scope of the invention.
Claims (8)
1. a kind of cement factory raw material grinding system kiln system control method, it is characterised in that: the cement factory raw material grinds system
System kiln system control method includes that kiln system stops feeding amount adjustment method when mill, and the kiln system stops feeding capacity adjustment side when mill
The set-up procedure of method are as follows: the shutdown of raw material grinding system finishes, and operator prepares to stop storage bucket when mentioning, and library bucket is mentioned pneumatic operated valve by operator
It closes, library bucket mentions pneumatic operated valve to control unit feedback signal, and control unit triggers back ash and enters the judgement of kiln condition, by returning grey zipper
Machine current values are calculated reality and return grey numerical quantity, enter kiln bucket according to time ash and mention delay numerical value, enter kiln in time ash
Bucket lags setting delay numerical value after mentioning, control unit, which is controlled, reduces by practical time grey numerical quantity into kiln feeding capacity, and control unit is supervised again
Control bucket, which mentions before whether electric current shuts down with raw material grinding system, to maintain an equal level, if bucket proposes electric current actual numerical value and shuts down lower than raw material grinding system
Before, then correction factor is reduced, is maintained an equal level before bucket proposes electric current actual numerical value and raw material grinding system is shut down；If bucket proposes electric current reality
Before numerical value is higher than the shutdown of raw material grinding system, then increase correction factor, until bucket proposes electric current actual numerical value and the shutdown of raw material grinding system
It is preceding to maintain an equal level.
2. cement factory raw material grinding system kiln system control method according to claim 1, it is characterised in that: the water
Mud factories grinding system kiln system control method further includes feeding amount adjustment method when raw material grinding system kiln system opens mill, described
Raw material grinding system kiln system feeding amount adjustment method when opening mill set-up procedure are as follows: raw material grinds operator and starts homogenizing storehouse top
And storage conveying equipment, starting raw material grind auxiliary system, start circulating fan, starting raw material grinds external circulating system, starts raw material
Main motor is ground, feed system is started, while adjusting valve opening, grinding pressure, powder concentrator revolving speed and feeding capacity to setting state,
Raw material mill operator and kiln operator, which link up, at this time carries out back ash switching, and after obtaining answer, raw material mill operator will be returned
Ash is put in storage pneumatic flashboard and opens, and returns ash storage, and system receives after pneumatic operated valve opens limit, and trigger executes, and passes through and returns ash and draw
It is X t/h that chain electromechanics stream calculation, which obtains outflow, and kiln feeding capacity is increased X t/h automatically, monitors and propose current conditions into kiln bucket by system,
After bucket mentions operation lap time, if bucket mentions electric current than low Y A before switching, illustrate that feeding capacity is lower than before switching, according to formula
Calculating correction value is Z t/h, then feeding capacity need to be further added by Z t/h, until bucket maintains an equal level before proposing current values and switching, into just
Normal operation mode.
3. cement factory raw material grinding system kiln system control method according to claim 1 or 2, it is characterised in that: described
Cement factory raw material grinding system kiln system control method further include raw material grinding system kiln system stop mill when air flow adjusting method, institute
The raw material grinding system kiln system stated stops the set-up procedure of air flow adjusting method when mill are as follows: when operator controls the grinding roller of raw material mill
When rise, control unit controls kiln system blower valve and closes to 5% hereinafter, system fan electric current is lower than system fan electric current mark
Quasi- numerical value triggers high-temperature blower air quantity regularization condition at this time, if the high-temperature blower entrance pressure after the closing of kiln system blower valve
High-temperature blower inlet pressure rolls average value numerical value before power actual numerical value is triggered lower than regularization condition, then control unit control increases
High-temperature blower revolving speed, the high-temperature blower inlet pressure actual numerical value after the closing of kiln system blower valve reach regularization condition touching
Until high-temperature blower inlet pressure rolls average value numberical range before sending out, if the high-temperature blower after the closing of kiln system blower valve
Inlet pressure actual numerical value is higher than high-temperature blower inlet pressure before regularization condition triggers and rolls average value numerical value, then control unit control
System reduces high-temperature blower revolving speed, and the high-temperature blower inlet pressure actual numerical value after the closing of kiln system blower valve reaches adjustment
Until high-temperature blower inlet pressure rolls average value numberical range before condition triggers.
4. cement factory raw material grinding system kiln system control method according to claim 1 or 2, it is characterised in that: described
Cement factory raw material grinding system kiln system control method further include air flow adjusting method when raw material grinding system kiln system opens mill, institute
The set-up procedure of air flow adjusting method when the raw material grinding system kiln system stated opens mill are as follows: raw material grinds operator and starts homogenizing storehouse top
And storage conveying equipment, starting raw material grind auxiliary system, start circulating fan, starting raw material grinds external circulating system, starts raw material
Main motor is ground, feed system is started, circulating fan inlet valve aperture is adjusted, works as valve opening > 50% and circulating fan electric current
When greater than 200A, trigger is executed, and is judged high-temperature blower outlet pressure and the variation of preheater outlet pressure, is reduced high-temperature blower
Revolving speed 5rpm if the pressure is higher, then drops 5rpm, until the pressure with open mill before remain basically stable, concurrently set minimum speed
Limitation, after adjustment, into normal operating state.
5. cement factory raw material grinding system kiln system control method according to claim 1 or 2, it is characterised in that: pass through
It returns grey machine for zipper electric current and practical when returning grey numerical quantity, the practical calculation formula for returning grey numerical quantity are as follows: practical to return ash quantity is calculated
Numerical value=10+ (return grey machine for zipper current values -20) * 2.5+ correction factor, correction factor is according to entering kiln bucket and mention electric current to be repaired
Just.
6. cement factory raw material grinding system kiln system control method according to claim 1 or 2, it is characterised in that: return ash
It is 2S into entering kiln bucket to mention delay numerical value, enters after kiln bucket mentions after lag 2S returning ash, control unit is controlled into kiln feeding capacity
Reduce by practical time grey numerical quantity, after time ash enters and lags 2S after kiln bucket mentions, control unit monitors bucket and proposes electric current actual numerical value
Maintain an equal level before whether being shut down with raw material grinding system.
7. cement factory raw material grinding system kiln system control method according to claim 4, it is characterised in that: control unit
When control reduces high-temperature blower revolving speed, 5rpm is adjusted every time, the high-temperature blower entrance pressure after the closing of kiln system blower valve
Power actual numerical value reaches before regularization condition triggers until high-temperature blower inlet pressure rolling average value numberical range；Control unit control
When system improves high-temperature blower revolving speed, 5rpm is adjusted every time, the high-temperature blower inlet pressure after the closing of kiln system blower valve
Actual numerical value reaches before regularization condition triggers until high-temperature blower inlet pressure rolling average value numberical range.
8. cement factory raw material grinding system kiln system control method according to claim 5, it is characterised in that: correction factor
=(return ash switching before enter kiln bucket mention after current values-return ash switching entering kiln bucket and proposing current values) * 3.5.
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