CN104460741B - Outlet temperature for evaporation cooler control system and method - Google Patents
Outlet temperature for evaporation cooler control system and method Download PDFInfo
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- CN104460741B CN104460741B CN201410428126.9A CN201410428126A CN104460741B CN 104460741 B CN104460741 B CN 104460741B CN 201410428126 A CN201410428126 A CN 201410428126A CN 104460741 B CN104460741 B CN 104460741B
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Abstract
EC outlet temperature control system disclosed by the invention, including the second cooling device by pipeline Yu described first cooling device parallel join, and the second flue gas flow detection device being disposed adjacent with described first flue gas flow detection device；When described target temperature value does not meets pre-conditioned, described controller obtains described second flue gas flow detection device and detects the second flue gas flow value of obtaining, and carries out computing according to described second flue gas flow value and obtain target temperature value；When the described target temperature value obtained according to the second flue gas flow value computing do not meet described pre-conditioned time, described controller obtains the second cooling parameter that described second cooling device detection obtains, and carries out computing obtain target temperature value according to described second cooling parameter.The invention also discloses EC outlet temperature control method.Outlet temperature for evaporation cooler control system provided by the present invention and method, it is possible to quickly fix a breakdown, it is ensured that the carrying out that technological process is continual and steady.
Description
Technical field
The present invention relates to dry dedusting technology field, more specifically, relate to a kind of outlet temperature for evaporation cooler and control system
System and method.
Background technology
Convertor steelmaking process can produce a large amount of 900 DEG C～the high-temperature flue gas of 1200 DEG C, and containing a large amount of powder in high-temperature flue gas
Dirt, therefore, before carrying out reclaiming or diffusing process by high-temperature flue gas, needs to remove the dust in high-temperature flue gas, dry
Method dedusting is conventional dust collection method.
In dust removal process, in order to meet the operating temperature of electrostatic precipitator (Electrostatic Precipitator, EP),
Before by flue gas suction EP, first flue gas is inputted devaporizer (Evaporative Cooling, EC), by spray
The mode of water and input steam reduces the temperature of flue gas in EC, and the outlet temperature of flue gas drops to about 200 DEG C, then,
Use the blower fan being arranged on EP exit the flue gas suction EP after cooling will to carry out dedusting.In the process, if EC
Outlet temperature is the highest, then the flue-gas temperature entering EP is the highest, and the ratio resistance of dust reduces, and affects the use of EP, directly
Affect efficiency of dust collection；If EC outlet temperature is the lowest, it is possible to cause the flue gas water content entering EP too high, coarse granule powder
Dirt humidity is excessive, easily produces wet ash phenomenon, and can produce condensation, and condensation can cause housing corrosion or high pressure creepage,
Cause device damage.As can be seen here, the EC outlet temperature control of flue gas is the key link of dust removing effects.
Traditional E C outlet temperature control system includes: the arrival end of EC, EC connects exhanst gas outlet and steam mixing tube is said
Mouthful, steam mixing duct entrance parallel join water pipeline and jet chimney；The outlet of EC connects the outlet of EP, EP even
Give a dinner for a visitor from afar machine；EC outlet temperature passes through programmable logic controller (PLC) (Programmable Logic Controller, PLC)
Control.
It is controlled EC outlet temperature being the regulation current outlet temperature of EC, makes EC Current Temperatures in setting range.
Owing in EC, the temperature of flue gas reduces by the way of water spray, when spray flow is relatively large, EC currently exports temperature
Spend relatively low；When spray flow is relatively small, the current outlet temperature of EC is of a relatively high；Same, when PLC detects
To the current outlet temperature of EC higher time, by control spray flow valve aperture increase, increase spray flow；Work as PLC
Detect when the current outlet temperature of EC is higher, reduced by the aperture controlling spray flow valve, reduce spray flow.Additionally,
Owing to the flue gas in EC needs by blower fan suction EP, the air quantity of blower fan produces temperature and pressure compensation, blower fan wind to flue gas in EC
Amount and the temperature of flue gas in EC and spray flow shape proportion relation, when fan delivery changes, spray flow also with
Change；Meanwhile, the effect of blower fan is that therefore, fan delivery is with powder in flue gas by the flue gas suction EP in EC
Dirt and spray flow and the change of steam content and change.
Seen from the above description, in traditional E C outlet temperature control system, between the current outlet temperature of EC and spray flow
Influence each other, also influence each other between fan delivery and spray flow meanwhile.Owing to control system currently exporting with EC
In temperature, spray flow and fan delivery, any parameter is also affected by other parameters, and logical relation is complicated, Qi Zhongren
The fluctuation of what parameter all can cause the fluctuation of EC outlet temperature, and each parameter all exists a lot of disturbance factor, when
During EC current outlet temperature exception, it is impossible to investigation fault, affect the properly functioning of technological process.
Summary of the invention
In view of this, the outlet temperature for evaporation cooler control system of embodiment of the present invention offer and method, when EC is current
During outlet temperature exception, it is possible to investigate fault fast and accurately, it is ensured that the operation that technological process is continual and steady.
First aspect, embodiments provides a kind of outlet temperature for evaporation cooler control system, including: controller,
Devaporizer EC and electrostatic precipitator EP being connected with described EC outlet, described EC sidewall is provided with the first cooling device,
Described EP outlet connects the first flue gas flow detection device；Also include: by pipeline and described first cooling device parallel join
The second cooling device, and with described first flue gas flow detection device be disposed adjacent second flue gas flow detection device；Wherein,
It is open-minded that described controller controls described first cooling device, and described second cooling device is closed；Described first cooling device detects
The the first cooling parameter arrived, the first flue gas flow obtained with described first flue gas flow detection device detection inputs described control
Device, described controller carries out computing according to described first cooling parameter with described first flue gas flow and obtains target temperature value；Work as institute
State target temperature value when not meeting pre-conditioned, described controller obtain that described second flue gas flow detection device detection obtains the
Two flue gas flow values, and carry out computing according to described second flue gas flow value and obtain target temperature value；When described according to the second flue gas
The target temperature value that flow value computing obtains do not meet described pre-conditioned time, described controller obtain described second cooling device inspection
The the second cooling parameter recorded, and carry out computing obtain target temperature value according to described second cooling parameter.
Preferably, described first cooling device includes the first water pipeline and first jet chimney of parallel join；Described second
Cooling device includes and the second water pipeline of described first water pipeline parallel join, and connects parallel with described first jet chimney
The second jet chimney connect；Described first cooling parameter includes the first spray flow of described first water pipeline, and described first
First steam flow of jet chimney；Described second cooling parameter includes the second spray flow of described second water pipeline, and institute
State the second steam flow of the second jet chimney；Described controller obtains the second cooling ginseng that described second cooling device detection obtains
Amount, including: described controller controls described first water pipeline and cuts out, and described second water pipeline is open-minded, obtains described second
Spray flow, obtains target temperature value according to described second spray flow computing；Obtain according to the second spray flow computing when described
Target temperature value do not meet described pre-conditioned time, described controller control described first jet chimney close, described second steam
Steam pipe road is open-minded, obtains described second steam flow, and obtains target temperature value according to described second steam flow computing.
Preferably, described first cooling device includes the first water pipeline and first jet chimney of parallel join；Described second
Cooling device includes and the second water pipeline of described first water pipeline parallel join, and connects parallel with described first jet chimney
The second jet chimney connect；Described first cooling parameter includes the first spray flow of described first water pipeline, and described first
First steam flow of jet chimney；Described second cooling parameter includes the second spray flow of described second water pipeline, and institute
State the second steam flow of the second jet chimney；Described controller obtains the second cooling ginseng that described second cooling device detection obtains
Amount, including: described controller controls described first water pipeline and described first jet chimney simultaneously closes off, described second water spray
Pipeline and described second jet chimney are opened simultaneously, obtain described second spray flow and described second steam flow, and according to institute
State the second spray flow and described second steam flow computing obtains target temperature value.
Preferably, described first water pipeline is provided with the first water spray stop valve and for detecting the of described first spray flow
One water jet amount detecting device；The second water spray stop valve it is provided with and for detecting described second water spray on described second water pipeline
Second water jet amount detecting device of flow；The first steam stop valve and described for detecting it is provided with on described first jet chimney
First steam flow detection device of the first steam flow；Be provided with on described second jet chimney the second steam stop valve and for
Detect the second steam flow detection device of described second steam flow；Wherein, described first water jet amount detecting device, described
Second water jet amount detecting device, described first water spray stop valve, described second water spray stop valve, described first steam flow inspection
Survey device, described second steam flow detection device, described first steam stop valve and described second steam stop valve and described control
Device signal processed connects；Described controller by control described first water spray stop valve, described second water spray stop valve, described first
Being open and shut off of steam stop valve and described second steam stop valve controls corresponding pipeline and opens and close.
Preferably, the pressure pipeline of described first flue gas flow detection device is provided with the first pipe rupture valve；Described second cigarette
It is provided with the second pipe rupture valve on the pressure pipeline of air flow detecting device；Described first pipe rupture valve and described second pipeline
Stop valve is connected with described controller signals, obtain that described second flue gas flow detection device detection obtains at described controller the
Before two flue gas flow values, it is open-minded that described controller controls described second pipe rupture valve, and described first pipe rupture valve is closed.
Second aspect, the embodiment of the present invention additionally provides a kind of outlet temperature for evaporation cooler control method, including: obtain
First cooling parameter of the first cooling device input and the first storage address；Read in described first storage address the of storage
One flue gas flow；Carry out computing obtain target temperature according to described first cooling parameter and described first flue gas flow；Work as institute
State target temperature when not meeting pre-conditioned, obtain the second storage address；Read in described second storage address the of storage
Two flue gas flows；Target temperature value is obtained according to described second flue gas flow computing；When described according to the second flue gas flow fortune
The target temperature value obtained do not meet described pre-conditioned time, obtain described second cooling device input second cooling ginseng
Number；Target temperature value is obtained according to described second cooling parameter computing.
Preferably, the second cooling parameter of described acquisition the second cooling device input, including: send to the first water pipeline
Out code, sends provisioning instruction to the second water pipeline；Obtain the second spray flow of described second water pipeline；Root
Target temperature value is obtained according to described second spray flow computing；When the described target temperature obtained according to the second spray flow computing
Angle value do not meet described pre-conditioned time, to first jet chimney send out code, to second jet chimney send open
Instruction；Obtain the second steam flow of described second jet chimney.
Preferably, the second cooling parameter of described acquisition the second cooling device input, including: to described first water pipeline
Send out code with described first jet chimney simultaneously；To described second water pipeline and described second jet chimney while
Send OPEN；Obtain described second spray flow and described second steam flow.
Preferably, described out code is sent specifically, on described first water pipeline to described first water pipeline
First water spray stop valve sends out code；Described send out code specifically, to described to described first jet chimney
The first steam stop valve on first jet chimney sends out code；Described transmission to described second water pipeline opens finger
Order is specifically, the second water spray stop valve on described second water pipeline sends OPEN；Described to described second steaming
Steam pipe road sends OPEN specifically, the second steam stop valve on described second jet chimney sends OPEN.
Preferably, before obtaining the second storage address, described method also includes: sends to the second pipe rupture valve and opens
Instruction；Out code is sent to the first pipe rupture valve.
As seen from the above description, outlet temperature for evaporation cooler control system provided by the present invention and method, it is provided with two
The cooling device of set parallel join, and two set flue gas flow detection devices.When EC outlet temperature exception, will the most
The device run switches to the stand-by provision of this device, compared with prior art, regardless of the ginseng affecting EC outlet temperature
Impact between amount, it is possible to quickly fix a breakdown, it is ensured that the carrying out that technological process is continual and steady.And, if switching
Rear EC outlet temperature is normal, then can determine and cause the factor that EC outlet temperature is abnormal to be produced by the equipment being switched；
Compared with prior art, additionally it is possible to determine the factor causing EC outlet temperature abnormal fast and accurately.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to required in embodiment
Accompanying drawing to be used is briefly described, it should be apparent that, the accompanying drawing in describing below is only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to attached according to these
Figure obtains other accompanying drawing.Shown in accompanying drawing, above and other purpose, feature and the advantage of the present invention will become apparent from.
The part that reference instruction identical in whole accompanying drawings is identical.The most deliberately draw attached by actual size equal proportion scaling
Figure, it is preferred that emphasis is illustrate the purport of the present invention.
The structural representation of the EC outlet temperature control system that Fig. 1 provides for the embodiment of the present invention；
The second embodiment structural representation of the EC outlet temperature control system that Fig. 2 provides for the embodiment of the present invention；
The EC outlet temperature control method flow chart that Fig. 3 provides for the embodiment of the present invention.
Detailed description of the invention
According to relation between each parameter in control system, spray flow, steam flow and EP exiting flue gas flow three
Individual parameter is the Important Parameters affecting EC outlet temperature, and in three parameters, EC all can be exported by the fluctuation of any one parameter
Temperature causes the biggest impact.Therefore, in the embodiment of the present invention, redundant loop is set for above three parameter, specifically
Scheme is as follows.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Description, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Base
Embodiment in the present invention, it is all that those of ordinary skill in the art are obtained under not making creative work premise
Other embodiments, broadly fall into the scope of protection of the invention.
When occurring abnormal in order to avoid EC outlet temperature, it is impossible to investigation reason, the present embodiment provides following scheme.Please join
See that Fig. 1, Fig. 1 show the EC outlet temperature control system structure chart that the embodiment of the present invention provides, described control system bag
Include: controller 11, EC12, and EP13, the EC12 sidewall being connected with EC12 outlet is provided with the first cooling device 14, EP13
Outlet connects the first flue gas flow detection device 15.Described control system also includes, with the first cooling device 14 by pipeline also
The second cooling device 16 that row connects, and the second flue gas flow detection dress being disposed adjacent with the first flue gas flow detection device 15
Put 17.
During process operation, the first cooling device 14 is in opening state under the regulation of controller 11, the second cooling
Device 16 is closed under the regulation of controller 11, and meanwhile, detection is obtained by the first flue gas flow detection device 15
The first flue gas flow input controller 11, the first cooling parameter and that the first cooling device 14 detection is obtained by controller 11
One flue gas flow carries out computing according to the program write in advance, obtains target temperature value, and judges whether this target temperature value meets
Pre-conditioned.
According to actual production technique, EC outlet temperature is affected bigger parameter be spray flow, steam flow and
EP exiting flue gas flow, in the present embodiment, by spray flow and steam flow collectively as cooling parameter.And three ginsengs
In amount, EP exiting flue gas flow produces the maximum probability of fluctuation, therefore, when target temperature value does not meets pre-conditioned,
First flue gas flow produces the maximum probability of impact, and first, controller 11 reads the second flue gas flow detection device 17 and detects
The second flue gas flow obtained, and the second flue gas flow is carried out computing according to the program write in advance, obtain target temperature value；
If meeting pre-conditioned according to the target temperature value that the second flue gas flow computing obtains, then technological process proceeds；Otherwise,
Controller controls the first cooling device 14 and cuts out, and controls the second cooling device 16 open-minded, obtains the second cooling device 16 and detects
The the second cooling parameter obtained, row operation of going forward side by side obtains target temperature value.
It is noted that in the embodiment of the present invention, do not meet pre-conditioned including: in Preset Time, target temperature value
Always more than the maximum of preset temperature range, or always less than the minimum of a value of preset temperature range, or beyond pre-
If fluctuating in the range of temperature range.
Additionally, during process operation, the parameter of each device input controller 11 is being constantly updated, controller 11
Constantly obtaining new parameter and carry out computing, obtain new target temperature value, controller 11 constantly detects target temperature simultaneously
It is pre-conditioned whether angle value meets.
The EC outlet temperature control system that the present embodiment is provided, is provided with the cooling device of two set parallel joins, and two
Set flue gas flow detection device.When EC outlet temperature exception, the device being currently running is switched to the standby of this device
With device, compared with prior art, regardless of the impact affected between the parameter of EC outlet temperature, it is possible to quickly arrange
Except fault, it is ensured that the carrying out that technological process is continual and steady.And, if EC outlet temperature is normal after Qie Huan, then can be true
Surely the factor causing EC outlet temperature abnormal is produced by the equipment being switched；Compared with prior art, additionally it is possible to quickly accurate
True determination causes the factor that EC outlet temperature is abnormal.
In art production process, by the high-temperature flue gas in EC being carried out cold by the way of EC spraying water and inputs steam
But lower the temperature, therefore, in order to make the more clear detailed understanding technical scheme of those skilled in the art, also please join
See the second embodiment structural representation of the EC outlet temperature control system that Fig. 2, Fig. 2 provide for the embodiment of the present invention,
On the basis of above-described embodiment, the present embodiment will be described in conjunction with Fig. 2.
In the present embodiment, the first cooling device 14 includes the first water pipeline 141 and the first jet chimney 142 of parallel join,
Second cooling device 16 includes and the second water pipeline 161 of the first water pipeline 141 parallel join, and with the first steam pipe
Second jet chimney 162 of road 142 parallel join.First water pipeline the 141, first jet chimney the 142, second water pipeline
161 and second jet chimney 162 outlet connect steam mixing duct, by steam mixing duct, steam is mixed and delivered to
In EC, therefore, the first cooling parameter includes: the first spray flow of the first water pipeline 141, and described first jet chimney
First steam flow of 142；Second cooling parameter includes: the first spray flow of the second water pipeline 161, and described first
First steam flow of jet chimney 162.
Owing to, in cooling parameter, the probability of spray flow fluctuation is relatively large, the probability of steam flow fluctuation is relatively small,
Therefore, controller controls the first cooling device 14 and cuts out, and controls the second cooling device 16 open-minded, obtains the second cooling device 16
The second cooling parameter that detection obtains, can be to switch over one by one according to the probability of parameter fluctuation, particularly as follows: controller 11
Controlling the first water pipeline 141 to close, the second water pipeline 161 is open-minded, obtains the second spray flow, and according to the second water spray
Flow computing obtains target temperature value；If meeting pre-conditioned according to the target temperature value that the second spray flow computing obtains, technique
Flow process continues；If this target temperature value does not meets pre-conditioned, controller 11 controls the first jet chimney 142 and cuts out, second
Jet chimney 162 is open-minded, obtains the second steam flow, and obtains target temperature value according to the second steam flow computing.This control
The mode of system switching, not only can regulate target temperature value, additionally it is possible to lock shadow quickly and accurately by the way of switching pipeline
Ring the factor of target temperature value.
Certainly, above-mentioned control mode is only a preferred exemplary of the present invention, and technical solution of the present invention is not limited to this, this
The another kind of preferred embodiment of the second cooling parameter that acquisition the second cooling device 16 detection that invention provides obtains includes: controller
11 control the first water pipelines 141 and the first jet chimney 142 simultaneously close off, the second water pipeline 161 and the second jet chimney
162 open simultaneously, obtain the second spray flow and the second steam flow, and transport according to the second spray flow and the second steam flow
Calculation obtains target temperature value.This control mode, it is possible to target temperature value is adjusted to pre-conditioned within the shortest time,
Thus ensure the carrying out of technological process fast and stable.
It is noted that the control mode of the embodiment of the present invention is not limited only to above two, it is also possible to do not meet at target temperature value
Time pre-conditioned, flue gas flow detected device, water jet amount detecting device and steam flow detection device and switches simultaneously, this
Bright without limitation.
Owing to traditional E C outlet temperature control system is by controlling spray flow governor valve control spray flow, need not close
Whole piece pipeline, and the EC outlet temperature control system that the embodiment of the present invention provides needs to open pipeline and closedown is adjusted
Joint, therefore, the EC outlet temperature control system concrete structure that the embodiment of the present invention provides is as follows: the first water pipeline 141
On be provided with the first water jet adjustable valve 1411, for detecting the first water jet amount detecting device 1412 of the first spray flow
With the first water spray stop valve 1413；The second water jet adjustable valve 1611 it is provided with, for examining on second water pipeline 161
Survey the second water jet amount detecting device 1612 and the second water spray stop valve 1613 of the second spray flow；First jet chimney 142
On be provided with the first steam flow detection device 1421 and the first steam stop valve 1422 for detecting described first steam flow；
The second steam flow detection device 1621 for detecting described second steam flow and it is provided with on second jet chimney 162
Two steam stop valves 1622.
Wherein, controller 11 regulates the spray of the first water pipeline by the aperture regulating the first water jet adjustable valve 1411
Discharge, regulates the spray flow of the first water pipeline by the aperture regulating the second water jet adjustable valve 1611, the
One water jet amount detecting device the 1412, second water jet amount detecting device the 1612, first steam flow detection device 1421 and
The corresponding parameter input controller 11 that detection is obtained by two steam flow detection devices 1621, controller 11 is according to calculated
Target temperature value constantly adjusts the first water jet adjustable valve 1411 or aperture of the second water jet adjustable valve 1611.
When target temperature value does not meets pre-conditioned, controller 11 is cut by controlling first water spray stop valve the 1413, second water spray
Being open and shut off of disconnected valve the 1613, first steam stop valve 1422 and the second steam stop valve 1622 controls corresponding pipeline
Open and close.Concrete operations order to pipeline, as described above, here is omitted for the present invention.
The present embodiment is by arranging stop valve on different pipelines, it is possible to when target temperature value does not meets pre-conditioned, cut in time
Change pipeline, thus ensure being normally carried out of technological process；And corresponding functional devices is set on pipeline, if pipeline fault,
The device producing fault can be checked accurately such that it is able to reason of fixing a breakdown in time.
It is noted that owing to flue gas flow detection device detects EP by pressure pipeline pressure and by the way of calculating pressure reduction
Exiting flue gas flow, after a period of time, the particle in flue gas can be infected with on pressure pipeline, thus affects the accurate of pressure
Property.In order to solve the problems referred to above, on the pressure pipeline of the first flue gas flow detection device 15 that the embodiment of the present invention is provided
It is provided with the first pipe rupture valve；It is provided with the second pipe rupture valve on the pressure pipeline of the second flue gas flow detection device 17.
When controller 11 obtains the first flue gas flow, controller 11 can control the second pipe rupture valve and cut out, and makes the second flue gas stream
Amount detecting device 17 quits work, and then can purge the pressure pipeline of the second flue gas flow detection device 17；Work as control
When device 11 processed obtains the second flue gas flow, the first pipe rupture valve can be controlled and close, make the first flue gas flow detection device 15
Quit work, and the pressure pipeline of the second flue gas flow detection device 17 is purged.In the present embodiment, cut by pipeline
Flue gas flow detection device is switched over by disconnected valve, is not affecting in the case of technological process is normally carried out, additionally it is possible to cut-off
Flue gas flow detection device pressure pipeline clear up by purging such that it is able to holding pressure line clear, make flue gas stream
The data that amount detecting device detection obtains are more accurate, also are able to extend the service life of flue gas flow detection device simultaneously.
Additionally, the mode that above-described embodiment arranges Redundant Control loop for flue gas flow, spray flow and steam flow is retouched
State, technological thought based on the present invention, EC outlet temperature can be produced the factor of impact and also include other factors, such as,
EP exiting flue gas pressure etc., the embodiment of the present invention can also arrange redundant loop for the loop of other factors, and the present invention is to this not
Limit.Certainly, above are only the optimal technical scheme that the present invention provides, wherein, the redundant loop of each parameter not only may be used
Think one, can also be for some in the case of technological process is normally carried out not affecting, the present invention is without limitation.
According to foregoing description, outlet temperature for evaporation cooler control system provided by the present invention, it is provided with two sets and connects parallel
The cooling device connect, and two set flue gas flow detection devices.When EC outlet temperature exception, the dress that will be currently running
Put the stand-by provision switching to this device, compared with prior art, regardless of affecting between the parameter of EC outlet temperature
Impact, it is possible to quickly fix a breakdown, it is ensured that the carrying out that technological process is continual and steady.And, if EC outlet after Qie Huan
Temperature is normal, then can determine and cause the factor that EC outlet temperature is abnormal to be produced by the equipment being switched；With prior art
Compare, additionally it is possible to determine the factor causing EC outlet temperature abnormal fast and accurately.
Based on said apparatus, the embodiment of the present invention additionally provides outlet temperature for evaporation cooler control method, sees Fig. 3,
The EC outlet temperature control method flow chart that Fig. 3 provides for the embodiment of the present invention, said method comprising the steps of:
Step S101: obtain the first cooling parameter and the first storage address of the first cooling device input.
The controller of the embodiment of the present invention is that PLC, PLC and EC outlet temperature control system is set up signal and is connected, and receives EC
The parameter of outlet temperature control system input.During carrying out due to technological process, only one of which cooling device is in fortune all the time
OK, and two flue gas flow detection devices can run simultaneously, and now PLC can be simultaneously received two flue gas flows,
Therefore, PLC is when programming, and respectively two flue gas flows arrange two different storage addresses, one of them is stored
Address reads address by default.
Step S102: read the first flue gas flow of storage in the first storage address.
Wherein, in first flue gas flow write the first storage address that the first flue gas flow detection device detection is obtained by PLC
Storage；Second flue gas flow write the second storage address that second flue gas flow detection device detection is obtained stores,
The first flue gas flow in the present embodiment, when PLC reads flue gas flow, during first acquiescence reads the first storage address.When
So, it is also possible to acquiescence reads the second flue gas flow in the second storage address, and the present invention is without limitation.
Step S103: carry out computing obtain target temperature according to the first cooling parameter and the first flue gas flow.
PLC is programmed in advance according to the relation between each parameter of control system, when reading each of control system
During the parameter that device inputs, carry out computing according to the program write in advance, obtain target temperature value, simultaneously to target temperature
Value detects.
Step S104: when target temperature does not meets pre-conditioned, obtains the second storage address.
Target temperature value carried out detection specifically include described in the embodiment of the present invention: judge whether target temperature value is being preset
In temperature range, if not in preset temperature range, if beyond Preset Time, if in Preset Time, target temperature
Angle value is not the most in preset temperature range, then it is assumed that target temperature value does not meets pre-conditioned.
In the present embodiment, target temperature value does not include situations below in preset range: target temperature value is more than preset temperature
The maximum of scope, or the minimum of a value less than preset temperature range, or beyond ripple in the range of preset temperature range
Dynamic.
Step S105: read the second flue gas flow of storage in the second storage address.
Owing to flue gas flow is the factor of maximum probability of fluctuating in the factor affecting EC outlet temperature, therefore, when target temperature
When angle value does not meets pre-conditioned, read the second flue gas flow.
During it is noted that PLC reads the second flue gas flow, can be to the first pipeline of the first flue gas flow detection device
Stop valve sends out code, is cut off by the pressure pipeline of the first flue gas flow detection device, makes the first flue gas flow detection
Device quits work, and can send purging instruction simultaneously, in order to clear up the pressure pipeline of the first flue gas flow detection device.
Certainly, if now the pressure pipeline of the second flue gas flow detection device is closed, it is necessary first to the second pipeline
Stop valve sends OPEN, and detects whether the second flue gas flow detection device can be used.
Step S106: obtain target temperature value according to the second flue gas flow computing.
Step S107: when the target temperature value obtained according to the second flue gas flow computing does not meets pre-conditioned, obtains the
Second cooling parameter of two cooling device inputs.
According to the above-mentioned description to device, in the present embodiment, obtain the second cooling parameter of the second cooling device input
Including: send out code to the first water pipeline, send provisioning instruction to the second water pipeline；Obtain the second sparge pipe
Second spray flow in road；Target temperature value is obtained according to the second spray flow computing；When according to the second spray flow computing
When the target temperature value obtained does not meets pre-conditioned, send out code to the first jet chimney, to the second jet chimney
Send OPEN；Obtain the second steam flow of the second jet chimney；Or, to the first water pipeline and the first steam
Pipeline sends out code simultaneously；Send OPEN to the second water pipeline and the second jet chimney simultaneously；Obtain second
Spray flow and the second steam flow.
Certainly, PLC sends out code by the first water spray stop valve on the first water pipeline and closes the first sparge pipe
Road；Send OPEN by the second water spray stop valve on the second water pipeline and open the second water pipeline；By to
The first steam stop valve on first jet chimney sends out code and closes the first jet chimney；By to the second steam pipe
The second steam stop valve on road sends OPEN and opens the second jet chimney.
Step S108: obtain target temperature value according to the second cooling parameter computing.
After control loop all switches, when the target temperature value that PLC computing obtains still does not meets pre-conditioned, it is believed that
Technological process fault.
Summary, outlet temperature for evaporation cooler control system provided by the present invention and method, it is provided with two sets parallel
The cooling device connected, and two set flue gas flow detection devices.When EC outlet temperature exception, by be currently running
Device switches to the stand-by provision of this device, compared with prior art, regardless of affecting between the parameter of EC outlet temperature
Impact, it is possible to quickly fix a breakdown, it is ensured that the carrying out that technological process is continual and steady.And, if EC after Qie Huan
Outlet temperature is normal, then can determine and cause the factor that EC outlet temperature is abnormal to be produced by the equipment being switched；With existing
Technology is compared, additionally it is possible to determine the factor causing EC outlet temperature abnormal fast and accurately.
It is understood that the present invention can be used in numerous general or special purpose computing system environment or configuration.Such as: individual
People's computer, server computer, handheld device or portable set, laptop device, multicomputer system, based on
The system of microprocessor, set top box, programmable consumer-elcetronics devices, network PC, minicom, mainframe computer,
DCE including any of the above system or equipment etc..
The present invention can be described in the general context of computer executable instructions, such as program mould
Block.Usually, program module include perform particular task or realize the routine of particular abstract data type, program, object,
Assembly, data structure etc..The present invention can also be put into practice in a distributed computing environment, at these DCEs
In, the remote processing devices connected by communication network perform task.In a distributed computing environment, program
Module may be located in the local and remote computer-readable storage medium including storage device.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to an entity
Or operation separates with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant
It is intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only
Including those key elements, but also include other key elements being not expressly set out, or also include for this process, method,
Article or the intrinsic key element of equipment.In the case of there is no more restriction, statement " including ... " limit
Key element, it is not excluded that in including the process of described key element, method, article or equipment, there is also other identical want
Element.
The above is only the detailed description of the invention of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also
Should be regarded as protection scope of the present invention.
Claims (10)
1. outlet temperature for evaporation cooler control system, including: controller, devaporizer EC and with described EC outlet even
Electrostatic precipitator EP connect, described EC sidewall is provided with the first cooling device, and described EP outlet connects the first flue gas flow detection
Device, it is characterised in that also include:
By the second cooling device of pipeline Yu described first cooling device parallel join, and fill with described first flue gas flow detection
Put the second flue gas flow detection device being disposed adjacent；
Wherein, it is open-minded that described controller controls described first cooling device, and described second cooling device is closed；Described first cooling
The first cooling parameter that device detection obtains, the first flue gas flow input obtained with described first flue gas flow detection device detection
Described controller, described controller carries out computing according to described first cooling parameter with described first flue gas flow and obtains target temperature
Value；
When described target temperature value does not meets pre-conditioned, described controller obtains described second flue gas flow detection device detection
The the second flue gas flow value obtained, and carry out computing according to described second flue gas flow value and obtain target temperature value；When described basis
The target temperature value that second flue gas flow value computing obtains do not meet described pre-conditioned time, described controller obtains described second cold
The second cooling parameter that radiator cooler detection obtains, and carry out computing obtain target temperature value according to described second cooling parameter.
2. control system as claimed in claim 1, it is characterised in that described first cooling device includes the first of parallel join
Water pipeline and the first jet chimney；Described second cooling device includes the second water spray with described first water pipeline parallel join
Pipeline, and with the second jet chimney of described first jet chimney parallel join；Described first cooling parameter includes described first spray
First spray flow of waterpipe, and the first steam flow of described first jet chimney；Described second cooling parameter includes described
Second spray flow of the second water pipeline, and the second steam flow of described second jet chimney；
Described controller obtains the second cooling parameter that described second cooling device detection obtains, including:
Described controller controls described first water pipeline and cuts out, and described second water pipeline is open-minded, obtains described second water jet
Amount, obtains target temperature value according to described second spray flow computing；
When the described target temperature value obtained according to the second spray flow computing do not meet described pre-conditioned time, described controller control
Making described first jet chimney to close, described second jet chimney is open-minded, obtains described second steam flow, and according to described the
Two steam flow computings obtain target temperature value.
3. control system as claimed in claim 1, it is characterised in that described first cooling device includes the first of parallel join
Water pipeline and the first jet chimney；Described second cooling device includes the second water spray with described first water pipeline parallel join
Pipeline, and with the second jet chimney of described first jet chimney parallel join；Described first cooling parameter includes described first spray
First spray flow of waterpipe, and the first steam flow of described first jet chimney；Described second cooling parameter includes described
Second spray flow of the second water pipeline, and the second steam flow of described second jet chimney；
Described controller obtains the second cooling parameter that described second cooling device detection obtains, including:
Described controller controls described first water pipeline and described first jet chimney and simultaneously closes off, described second water pipeline and
Described second jet chimney is opened simultaneously, obtains described second spray flow and described second steam flow, and according to described second
Spray flow and described second steam flow computing obtain target temperature value.
4. control system as claimed in claim 2 or claim 3, it is characterised in that be provided with the first spray on described first water pipeline
Water stop valve and for detecting the first water jet amount detecting device of described first spray flow；Arrange on described second water pipeline
There is the second water spray stop valve and for detecting the second water jet amount detecting device of described second spray flow；Described first steam pipe
The first steam stop valve it is provided with and for detecting the first steam flow detection device of described first steam flow on road；Described
The second steam stop valve it is provided with and for detecting the second steam flowrate testing dress of described second steam flow on two jet chimneys
Put；
Wherein, described first water jet amount detecting device, described second water jet amount detecting device, described first water spray stop valve,
Described second water spray stop valve, described first steam flow detection device, described second steam flow detection device, described first
Steam stop valve and described second steam stop valve are connected with described controller signals；Described controller is by controlling described first spray
Being open and shut off of water stop valve, described second water spray stop valve, described first steam stop valve and described second steam stop valve
Control corresponding pipeline to open and close.
5. control system as claimed in claim 1, it is characterised in that the pressure pipeline of described first flue gas flow detection device
On be provided with the first pipe rupture valve；It is provided with the second pipeline on the pressure pipeline of described second flue gas flow detection device to cut off
Valve；
Described first pipe rupture valve and described second pipe rupture valve are connected with described controller signals, obtain at described controller
Before the second flue gas flow value that described second flue gas flow detection device detection obtains, described controller controls described second pipeline
Stop valve is open-minded, and described first pipe rupture valve is closed.
6. outlet temperature for evaporation cooler control method, it is characterised in that including:
Obtain the first cooling parameter and the first storage address of the first cooling device input；
Read the first flue gas flow of storage in described first storage address；
Carry out computing obtain target temperature according to described first cooling parameter and described first flue gas flow；
When described target temperature does not meets pre-conditioned, obtain the second storage address；
Read the second flue gas flow of storage in described second storage address；
Target temperature value is obtained according to described second flue gas flow computing；
When the described target temperature value obtained according to the second flue gas flow computing do not meet described pre-conditioned time, obtain second
Second cooling parameter of cooling device input；
Target temperature value is obtained according to described second cooling parameter computing.
7. control method as claimed in claim 6, it is characterised in that the second of described acquisition the second cooling device input
Cooling parameter, including:
Send out code to the first water pipeline, send provisioning instruction to the second water pipeline；
Obtain the second spray flow of described second water pipeline；
Target temperature value is obtained according to described second spray flow computing；
When the described target temperature value obtained according to the second spray flow computing do not meet described pre-conditioned time, to first steam
Steam pipe road sends out code, sends OPEN to the second jet chimney；
Obtain the second steam flow of described second jet chimney.
8. control method as claimed in claim 6, it is characterised in that the second of described acquisition the second cooling device input
Cooling parameter, including:
Send out code to the first water pipeline and the first jet chimney simultaneously；
Send OPEN to the second water pipeline and the second jet chimney simultaneously；
Obtain described second spray flow and described second steam flow.
9. control method as claimed in claim 7 or 8, it is characterised in that described to described first water pipeline transmission
Out code is specifically, the first water spray stop valve on described first water pipeline sends out code；
Described send out code to described first jet chimney specifically, the first steam on described first jet chimney
Stop valve sends out code；
Described to described second water pipeline send OPEN specifically, on described second water pipeline second water spray
Stop valve sends OPEN；
Described send OPEN to described second jet chimney specifically, the second steam on described second jet chimney
Stop valve sends OPEN.
10. control method as claimed in claim 6, it is characterised in that before obtaining the second storage address, described
Method also includes:
OPEN is sent to the second pipe rupture valve；
Out code is sent to the first pipe rupture valve.
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| CN106048130B (en) * | 2016-06-27 | 2018-01-12 | 中冶华天南京电气工程技术有限公司 | A kind of converter dry dedusting devaporizer exit gas temperature control system and method |
| CN108531681B (en) * | 2018-05-08 | 2020-02-18 | 中冶东方工程技术有限公司 | Automatic control method for dry dedusting of converter flue gas |
| CN114345049A (en) * | 2022-01-11 | 2022-04-15 | 南京钢铁股份有限公司 | Converter flue spraying control method for dynamically monitoring flue gas speed and temperature |
| CN114935955B (en) * | 2022-06-27 | 2023-08-04 | 福建三钢闽光股份有限公司 | Method for controlling outlet temperature of evaporative cooler of converter |
| CN116505169B (en) * | 2023-06-20 | 2023-09-26 | 宁波齐云新材料技术有限公司 | High-integration lithium battery pack packaging structure and work control method thereof |
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