CN109879570A - Bottom-mud dewatering desiccation Optimal Control System - Google Patents
Bottom-mud dewatering desiccation Optimal Control System Download PDFInfo
- Publication number
- CN109879570A CN109879570A CN201910183479.XA CN201910183479A CN109879570A CN 109879570 A CN109879570 A CN 109879570A CN 201910183479 A CN201910183479 A CN 201910183479A CN 109879570 A CN109879570 A CN 109879570A
- Authority
- CN
- China
- Prior art keywords
- mud
- sheet frame
- blender
- board
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The present invention provides a kind of bottom-mud dewatering desiccation Optimal Control System, belongs to industrial control field.The present invention can be controlled according to the real-time concentration of mud in the slurry transportation pipeline of blender front end, the total amount for being delivered to mud in blender in conjunction with the accurate optimization for the weight of material information realization material addition that weighing sensor measures；According to concentration of hydraulic mixture in balancing reservoir after conditioning and it is delivered to the total amount of mud in board and frame machine, realizes that the optimal control of sheet frame charging (mud) process completes sheet frame charging that is, after feedstock quality reaches setting desired value；Go out water inventory according to board and frame machine feedstock quality, tail water, the moisture content of real-time monitoring board and frame machine internal cake completes squeezing after moisture content reaches desired value, realizes the optimal control of sheet frame expressing process；It improves process efficiency, reduce material, energy cost.
Description
Technical field
The present invention is suitable for industrial control field, is related to a kind of bottom-mud dewatering desiccation Optimal Control System.
Background technique
With the quickening of urban development speed, urban industry, sanitary sewage are largely discharged into rivers and lakes, cause river
Stream, bottom mud in lake eutrophication, bed mud siltation becomes and the water-holding capacity of rivers and lakes is declined, and then may cause in city
Flood.The Sediment Dredging engineering in urban river lake is largely carried out in recent years, and the bed mud after dredging can be taken off in several ways
Water desiccation, relatively conventional technique are the dehydration of sheet frame machinery press type, but be not yet disclosed in the prior art it is a whole set of it is full automatic,
The control system and method for process optimization.
Traditional control method is squeezed three processes and is independently carried out in mud conditioning, sheet frame charging, sheet frame, and respective process
Mostly controlled with empirical value.During mud conditioning, operator rule of thumb judges concentration of hydraulic mixture in pipeline, manually adjusts
Material adding speed and additive amount；Sheet frame charging, expressing process are all rule of thumb to set the corresponding time, when reaching setting
Between after stop charging or squeezing.The control mode of experience is poor for applicability for different shales, and production efficiency is lower, production cost
It is higher.
Chinese patent application (publication number CN104529128A) disclosed on 04 22nd, 2015, disclosure of the invention one kind
Sludge concentration desiccation press filteration system is mainly mixed by sequentially connected sludge gravity concentration tank, dewatered sludge feed pump, reaction
Device, Stacked sludge dewatering machine, sludge specific resistance conditioning device, intermediate delivery pump, sludge reaction tank, charging pressure dredge pump and diaphragm type
Plate and frame filter press composition, it is characterised in that: the dosing mouth of the sludge specific resistance conditioning device is filled by pipeline and conditioner dosing
Set connection；The diaphragm type plate and frame filter press is provided with diaphragm type sheet frame, and filter cloth, diaphragm type plate are enclosed with outside diaphragm type sheet frame
Frame inner cavity is connect by the branch pipe that pressurizes with pressurised water tank, and is provided with pressure on the general pipeline between pressurization branch pipe and pressurised water tank
Regulating device.System integration sludge condensation, mechanical dehydration, resistivity conditioning, solidification conditioning, drying process, have automation
The characteristics of operation, automatic discharging, but the technical solution is not suitable for carrying out dehydration and drying to the bed mud after dredging.
Chinese patent application (publication number CN103435239A) disclosed on December 11st, 2013 is related to a kind of changing sludge
Property desiccation be generative fuel equipment and its course of work, equipment includes: ortho states sludge weighing hopper, ortho states sludge charging belt
Machine, solid additives weigh-hatching plant, sludge stirring device, sludge feeding material-distributing system, dewatered sludge metering delivery device,
Dewatered sludge feed intake belt feeder, auxiliary material storage transmission measurement system, main website, be stirred host, finished fuels discharging skin
Band machine and control system, can save manual operation and intervention, the items such as properties of product and burning refer to after controlling using control system
The requirement that can be up to state standards is marked, is the ideal style of sewage sludge harmlessness, recycling treatment disposition.Equally, the document is draped over one's shoulders
The system and course of work technical solution of dew are not suitable for carrying out dehydration and drying to the bed mud after dredging yet.
Summary of the invention
It is an object of the present invention to overcome the deficiencies of the prior art and provide a kind of bottom-mud dewatering desiccation optimal control system
System.
In order to achieve the above objectives, the present invention provides the following technical scheme that
A kind of bottom-mud dewatering desiccation Optimal Control System, the system include data acquisition unit, process optimization processing unit,
Execution unit, wherein process optimization processing unit by based on programmable logic controller (PLC) (PLC) automatic control system come real
It is existing.
Wherein, execution unit includes conveyer, discharge valve, blender, dredge pump, board and frame machine, and above-mentioned working equipment combines dense
Contracting pond, balancing reservoir, material pot complete mud conditioning process jointly；Along the outbound course of mud, concentration basin, blender, balancing reservoir,
Board and frame machine passes sequentially through the connection of slurry transportation pipeline；River, lake-bottom mud by slagging-off after by dredging vessel conveying
It to concentration basin, and is further concentrated in concentration basin, the mud after concentration is twisted using environmental protection to be inhaled ship pump and be delivered in blender, object
Batch can is for placing material, and the material in material pot is added in the mud of blender by conveyer, discharge valve, mud
It is flow in balancing reservoir certainly after uniform stirring in blender with material and carries out secondary response, complete conditioning process；After conditioning
Mud is delivered in board and frame machine by dredge pump, and through board and frame machine dehydration and drying；The each equipment sheet of execution unit is normal as this field
See equipment.
Wherein, the output end of data acquisition unit is connect with the process optimization processing unit comprising various kinds of sensors,
Respectively flowmeter, ultrasonic wave densimeter, weighing sensor, ultrasonic level gage, liquid-level switch；Flowmeter and ultrasonic wave concentration
There are two meter is each, first flowmeter, the first ultrasonic wave densimeter are mounted on the slurry transportation pipeline between concentration basin and blender
On, to detect the flow f for entering the mud of blender1, concentration c1；Second flowmeter, the second ultrasonic wave densimeter are mounted on
Change on the slurry transportation pipeline between pond and board and frame machine, to detect the flow f for entering the mud of board and frame machine2, concentration c2；It is described
Weighing sensor is mounted on material pot tank foot bottom, is used for metering material tank weight W；The ultrasonic level gage is mounted on sheet frame
Tail sink top, for monitoring sheet frame tail water water yield；The liquid-level switch is mounted on above balancing reservoir, for detecting
Change pond mud level.
Wherein, process optimization processing unit is connect with data acquisition unit and execution unit respectively comprising programmable to patrol
Collect controller (PLC), touch screen (HMI)；The touch screen is human-computer interaction device, passes through programmable logic controller (PLC)
(PLC) it is connect respectively with data acquisition unit and execution unit, for showing sensing data, and the touch by being arranged thereon
The work of button manipulations execution unit；Process optimization software module is additionally provided in the programmable logic controller (PLC), for realizing
Process optimization；
Further, the process optimization software module is used for: (a) according to mud in the slurry transportation pipeline of blender front end
Real-time concentration c1, the mud total flow that is delivered in blenderIn conjunction with the physical weight letter of weighing sensor metering
Breath realizes the accurate optimization control of material addition, and optimization conditioning process is to do synchronous preparation into board and frame machine charging in real time；(b) root
According to concentration of hydraulic mixture c in balancing reservoir after conditioning2And it is delivered to the mud total flow in board and frame machineIt calculates sheet frame and feeds (mud
Slurry) mass MMaterial, when sheet frame feeds (mud) gross mass MAlways into slurryReach setting desired value MPhaseAfterwards, sheet frame charging is completed, realizes sheet frame
The optimal control of (mud) process of charging；(c) (mud) mass M is fed according to board and frame machineAlways into slurry, tail water go out water inventory MTotal tail water, real
When monitor sheet frame internal cake moisture content ω, when moisture content ω reaches desired value ωPhaseSqueezing is completed afterwards, realizes that sheet frame squeezed
The optimal control of journey.
Further, bottom-mud dewatering desiccation Optimal Control System proposed by the present invention, workflow are as follows:
(1) acquisition enters the concentration of hydraulic mixture c of blender1, flow f1, material pot weight W, sheet frame fill process and sheet frame
Tail water water yield in expressing process, obtains the running state data of balancing reservoir liquid-level switch and working equipment, and judges to be homogenized
Whether pond mud level is " low " signal, if so, (2) are thened follow the steps, if it is not, thening follow the steps (3)；
(2) mud improves optimization process:
2.1) successively start " blender ", " screw conveyor ", " discharge valve " in sequence；
2.2) the mud density ρ for entering blender is calculated1And mud integrated flow
2.3) according to the concentration of hydraulic mixture c for entering blender1, mud density ρ1, integrated flowComputation of mud over dry base
Mass MOver dry；
2.4) material addition mass M is calculatedMaterial, and trigger and execute material addition, and calculate material after material addition
Tank weight change amount Δ W；
2.5) it calculates material and adds mass MMaterialWith the difference of material pot weight change amount Δ W, discharge valve is provided with third gear tune
The critical difference of speed, when the two difference difference critical greater than top gear, discharge valve full speed running, when the two difference is less than low or first gear
When critical difference, the operation of discharge valve low speed, when difference is between top gear and low or first gear, discharge valve middling speed operation, with this
Realize the automatic speed regulation of discharge valve；
2.6) judge whether balancing reservoir liquid-level switch is "high" signal, if so, executing 2.7), if it is not, then mud adjusts
Process continues, and judges whether balancing reservoir liquid-level switch is "high" signal again, until balancing reservoir liquid-level switch is "high" signal；
2.7) further judge that material adds mass MMaterialWhether the difference with material pot weight change amount Δ W is zero, if
It is then successively to stop " discharge valve ", " conveyer ", " blender ", completes mud and improve optimal control, and execute step (3)；If
It is no, then continue to add materials, and judge that material adds mass MMaterialWhether the difference with material pot weight change amount Δ W is zero, directly
Mass M is added to materialMaterialDifference with material pot weight change amount Δ W is zero, starts to execute step (3)；
(3) sheet frame feed optimization process:
3.1) whether ready board and frame machine is judged, if so, thening follow the steps 3.2), if it is not, then continuing waiting for until plate
Frame machine is ready；
3.2) start " dredge pump "；
3.3) the mud density ρ for entering board and frame machine is calculated2And mud integrated flow
3.4) it calculates tail water in sheet frame fill process and goes out water inventory MTail water 1；
3.5) according to the mud density ρ for entering board and frame machine2And mud integrated flowCalculate sheet frame charging (mud)
Gross mass MAlways into slurry, and judge that sheet frame feeds (mud) gross mass MAlways into slurryWhether setting expectation feedstock quality M is reachedPhase, if so, holding
Row step 3.6) if it is not, then continuing to feed, and judges that sheet frame feeds (mud) gross mass MAlways into slurryWhether setting expectation charging is reached
Mass MPhase, until sheet frame feeds (mud) gross mass MAlways into slurryFeedstock quality M it is expected with settingPhaseIt is equal；
3.6) stop " dredge pump ", complete sheet frame feed optimization control process, and execute step (4)；
(4) sheet frame squeezes optimization process:
4.1) it calculates tail water in sheet frame expressing process and goes out water inventory MTail water 2, and tail water in the sheet frame expressing process is discharged
Total amount MTail water 2Go out water inventory M with tail water in sheet frame fill process obtained in step 3.4)Tail water 1Added up, obtains accumulative tail
Water goes out water inventory MTotal tail water；
4.2) according to the exhausted butt quality M of combined feedCombined feed over dry, sheet frame feed (mud) gross mass MAlways into slurry, accumulative tail water goes out
Water inventory MTotal tail waterCalculate the moisture content ω of sheet frame internal cake；
4.3) judge the moisture content ω and setting expectation moisture content ω of sheet frame internal cakePhaseIt is whether equal, if so, executing
Step 4.4) if it is not, then continuing to squeeze, and continues to judge the moisture content ω and setting expectation moisture content ω of sheet frame internal cakePhase
It is whether equal, until the moisture content ω of sheet frame internal cake and setting expectation moisture content ωPhaseIt is equal；
4.4) continue to judge whether the sheet frame squeezing time is more than setting upper limit value, if it is not, then stopping " squeezing ", complete sheet frame
Optimal control process is squeezed, if so, triggering material additive amount abnormality alarm.
Compared with prior art, the method for the present invention have the beneficial effect that by concentration of hydraulic mixture, flow, material pot weight,
The detection of board and frame machine tail water realizes that mud conditioning in bottom-mud dewatering drying process, sheet frame charging, sheet frame squeeze the excellent of three processes
Change control, improves process efficiency, reduces material, energy cost.
Detailed description of the invention
Fig. 1 is the frame diagram of bottom-mud dewatering desiccation Optimal Control System provided in an embodiment of the present invention；
Fig. 2 is the work main flow chart of bottom-mud dewatering desiccation Optimal Control System provided in an embodiment of the present invention；
Fig. 3 bottom-mud dewatering desiccation Optimal Control System provided in an embodiment of the present invention carries out the process of mud conditioning process
Figure；
Fig. 4 bottom-mud dewatering desiccation Optimal Control System provided in an embodiment of the present invention carries out the process of sheet frame fill process
Figure；
Fig. 5 bottom-mud dewatering desiccation Optimal Control System provided in an embodiment of the present invention carries out the process of sheet frame expressing process
Figure；
Fig. 6 is the application scenarios schematic diagram of bottom-mud dewatering desiccation Optimal Control System provided in an embodiment of the present invention.
Specific embodiment
The following further describes the specific embodiments of the present invention with reference to the drawings.
As shown in Figures 1 to 6, the present invention provides a kind of bottom-mud dewatering desiccation Optimal Control System, including data acquisition list
Member, process optimization processing unit, execution unit, wherein process optimization processing unit is by based on programmable logic controller (PLC)
(PLC) automatic control system is realized.
Further, execution unit includes screw conveyor 5, discharge valve 4, blender 6, dredge pump 7, board and frame machine 8, above equipment
Mud is completed jointly in conjunction with concentration basin 1, balancing reservoir 2, material pot 3 improves process；Along the outbound course of mud, concentration basin 1, stirring
Machine 6, balancing reservoir 2, board and frame machine 8 pass sequentially through the connection of slurry transportation pipeline 9；Grout outlet is provided on blender 6, balancing reservoir 2 is set
It is equipped with stock inlet, the grout outlet of blender 6 is higher than the stock inlet of balancing reservoir 2；River, the mud of lake-bottom are logical after slagging-off
It crosses dredging vessel and is delivered to concentration basin 1, and be further concentrated in concentration basin 1, the mud after concentration is twisted using environmental protection inhales ship pump
10 are delivered in blender 6, and for material pot 3 for placing material, the material in material pot 3 passes through screw conveyor 5, discharge valve 4
Be added to blender 6, mud and material in blender 6 by uniform stirring after carry out secondary response again from flowing in balancing reservoir 2, it is complete
At conditioning process；Mud after conditioning is delivered in board and frame machine 8 by dredge pump 7, and through 8 dehydration and drying of board and frame machine；Execution unit
Each equipment sheet is as this field common device.
Further, there are two material pot 3 can be set, in order to which two different materials can be added when mud conditioning,
Keep mud conditioning effect more preferable, and then keeps slurry dewatering desiccation effect also more preferable.
Further, data acquisition unit includes various kinds of sensors, and output is connect with the process optimization processing unit, point
It Wei not flowmeter, ultrasonic wave densimeter, weighing sensor, ultrasonic level gage, liquid-level switch；Flowmeter and ultrasonic wave densimeter
There are two each, the mud that first flowmeter 111, the first ultrasonic wave densimeter 121 are mounted between concentration basin 1 and blender 6 is defeated
It send on pipeline 9, to detect the flow f for entering the mud of blender 61, concentration c1；Second flowmeter 112, the second ultrasonic wave are dense
Degree meter 122 is mounted on the slurry transportation pipeline 9 between balancing reservoir 2 and board and frame machine 8, to detect the mud for entering board and frame machine 8
Flow f2, concentration c2；The weighing sensor is mounted on material pot tank foot bottom, is used for metering material tank weight W；It is described super
Sonic liquid-level meter is mounted on the tail water slot top of board and frame machine 8, for detecting sheet frame tail water；The liquid-level switch 13 is mounted on
2 top of balancing reservoir, for detecting balancing reservoir mud level.
Further, process optimization processing unit is connect with data acquisition unit and execution unit respectively comprising programmable
Logic controller (PLC), touch screen (HMI)；The touch screen is human-computer interaction device, passes through programmable logic controller (PLC)
(PLC) it is connect respectively with data acquisition unit and execution unit, for showing sensing data, and the touch by being arranged thereon
The work of button manipulations execution unit；Process optimization software module is additionally provided in the programmable logic controller (PLC), to realize
Process optimization.
Further, process optimization software module to: (a) according in the slurry transportation pipeline of blender front end mud it is real-time
Concentration c1, the mud total flow that is delivered in blenderIt is real in conjunction with the physical weight information of weighing sensor metering
The accurate optimization control that existing material adds, optimizes conditioning process, does synchronous preparation in real time to feed into board and frame machine；(b) basis
Concentration of hydraulic mixture c in balancing reservoir after conditioning2And it is delivered to the mud total flow in board and frame machineCalculate sheet frame charging (mud)
Mass MMaterial, when sheet frame feeds (mud) gross mass MAlways into slurryReach setting desired value MPhaseAfterwards, complete sheet frame charging, realize sheet frame into
Expect the optimal control of (mud) process；(c) (mud) mass M is fed according to board and frame machineAlways into slurry, tail water go out water inventory MTotal tail water, in real time
The moisture content ω for monitoring sheet frame internal cake, when moisture content ω reaches desired value ωPhaseSqueezing is completed afterwards, realizes sheet frame expressing process
Optimal control.
Wherein, process optimization software module is write by PLC program, mainly includes data acquisition routines, mud conditioning
Optimal control subprogram, sheet frame feed optimization control subprogram, sheet frame squeeze optimal control subprogram.
Wherein, data acquisition routines are to acquire concentration of hydraulic mixture, flow, material pot weight, tail water flow, balancing reservoir liquid
The running state data of bit switch and equipment, and judge whether balancing reservoir mud level is " low " signal；Mud conditioning optimization control
Subprogram includes material equipment control subprogram, density counting subroutine, flux cumulating subprogram, the sub- journey of over dry base calculating again
Sequence, material addition quality subprogram, discharge valve adjust the speed subprogram automatically, mud conditioning terminates to judge subprogram；Sheet frame charging is excellent
Change control subprogram includes board and frame machine communication subprogram, dredge pump control subprogram, density counting subroutine, the sub- journey of flux cumulating again
Sequence, tail water add up subprogram, feedstock quality counting subroutine；It includes tail water flux cumulating that sheet frame squeezes optimal control subprogram again
Subprogram, moisture content of the cake counting subroutine, sheet frame squeezing terminate to judge subprogram.
Further, the working method of the bottom-mud dewatering desiccation Optimal Control System is as follows:
(1) start control system starting, execute data acquisition routines, acquire concentration of hydraulic mixture c1, flow f1, material pot
Weight W, tail water flow obtain the running state data of balancing reservoir liquid-level switch and equipment, whether judge balancing reservoir mud level
For " low " signal, if so, (2) are thened follow the steps, if it is not, thening follow the steps (3)；
(2) control system executes mud conditioning optimal control subprogram automatically:
2.1) it calls material equipment to control subprogram, successively starts " blender " in sequence, " screw conveyor ", " unloads
Expect valve "；
2.2) density counting subroutine computation of mud density p is called1, call the accumulative stream of flux cumulating subprogram computation of mud
Amount
2.3) over dry base counting subroutine is called, according to concentration of hydraulic mixture c1, density p1, integrated flowComputation of mud
Exhausted butt quality MOver dry；
2.4) material addition quality subprogram is called to calculate material addition mass MMaterial, and trigger and execute material addition, with
And material pot weight change amount Δ W is calculated after material addition；
2.5) it calls discharge valve to adjust the speed subprogram automatically, calculates material and add mass MMaterialWith material pot weight change amount Δ W
Difference, discharge valve is provided with third gear and adjusts the speed critical difference, and when the two difference is greater than the critical difference of top gear, discharge valve is at full speed
Operation, when the two difference is less than the critical difference of low or first gear, the operation of discharge valve low speed, when difference between top gear and low or first gear it
Between when, discharge valve middling speed operation, the automatic speed regulation of discharge valve is realized with this；
2.6) it calls mud conditioning to terminate to judge subprogram, judges whether balancing reservoir liquid-level switch is "high" signal, if so,
It then executes 2.7), if it is not, then mud adjustment process continues, and judges whether balancing reservoir liquid-level switch is "high" signal again, directly
It is "high" signal to balancing reservoir liquid-level switch；
2.7) continuing through mud conditioning terminates to judge subprogram, further judges material additive amount MMaterialWith material pot weight
Whether the difference for measuring variation delta W is zero, if so, successively stopping " discharge valve ", " conveyer ", " blender ", completes mud
Optimal control is improved, and returns to main program and executes step (3), if it is not, then continuing to add materials, and judges material additive amount MMaterial
Whether the difference with material pot weight change amount Δ W is zero, until the difference of additive amount and material pot weight change amount is zero.
(3) when board and frame machine is fed, system executes sheet frame feed optimization control subprogram automatically:
3.1) whether ready board and frame machine communication subprogram is called to judge board and frame machine, if so, then follow the steps 3.2), if
It is no, then it continues waiting for until board and frame machine is ready；
3.2) subprogram starting " dredge pump " is controlled by dredge pump；
3.3) density counting subroutine computation of mud density p is called2, call the accumulative stream of flux cumulating subprogram computation of mud
Amount
3.4) it calls tail water to add up subprogram and calculates tail water total amount M in sheet frame fill processTail water 1；
3.5) feedstock quality counting subroutine is called, according to fed feed density ρ2, integrated flowCalculate sheet frame charging
(mud) gross mass MAlways into slurry, and judge that sheet frame feeds (mud) gross mass MAlways into slurryWhether setting expectation feedstock quality M is reachedPhaseIf
It is to then follow the steps 3.6), if it is not, then continuing to feed, and judges that sheet frame feeds (mud) gross mass MAlways into slurryWhether setting is reached
It is expected that feedstock quality MPhase, until sheet frame feeds (mud) gross mass MAlways into slurryFeedstock quality M it is expected with settingPhaseIt is equal；
3.6) it calls dredge pump control subprogram to stop " dredge pump ", completes the control of sheet frame feed optimization, and return to main program and hold
Row step (4).
(4) when sheet frame squeezes, system executes sheet frame squeezing optimal control subprogram automatically:
4.1) tail water flux cumulating subprogram is called, tail water total amount M in sheet frame expressing process is calculatedTail water 2, and by the plate
Tail water total amount M in frame expressing processTail water 2With tail water total amount M in sheet frame fill process obtained in step 3.4)Tail water 1Added up,
Obtain accumulative tail water total amount MTotal tail water；
4.2) moisture content of the cake counting subroutine is called, according to the exhausted butt quality M of chargingCombined feed over dry, sheet frame charging (mud)
Gross mass MAlways into slurry, accumulative tail water total amount MTotal tail waterCalculate the moisture content ω of sheet frame internal cake；
4.3) it calls sheet frame squeezing to terminate to judge subprogram, judges moisture content ω and setting expectation moisture content ωPhaseWhether phase
Deng if it is not, then continuing to squeeze, and continuing to judge moisture content ω and setting expectation moisture content ω if so, then follow the steps 4.4)Phase
It is whether equal, until moisture content ω and setting expectation moisture content ωPhaseIt is equal；
4.4) continuing through sheet frame squeezing terminates to judge subprogram, continues to judge whether the sheet frame squeezing time is more than in setting
Limit value completes sheet frame and squeezes optimal control, and return to main program if it is not, then stopping " squeezing ", if so, triggering material addition
Measure abnormality alarm.
(5) control system work terminates.
In summary, it is related to mud conditioning process, sheet frame fill process, sheet frame expressing process when the invention works.
River, lake-bottom mud are delivered to concentration basin after slagging-off by dredging vessel, are further concentrated in concentration basin,
Mud after concentration twists suction ship by environmental protection and is pumped to blender, adds materials in blender, for changing the physics of bed mud
Structure reduces moisture content, and material additive amount is the mass percent of mud over dry base, is added by discharge valve and screw conveyor
To blender；Mud after adding materials sufficiently reacts in balancing reservoir from balancing reservoir is flow to, further decreases moisture content,
Above procedure is known as mud conditioning process.Each mud conditioning meets design requirement (i.e. balancing reservoir with mud level in balancing reservoir
It is full) stop afterwards, mud conditioning is carried out when mud amount is very few again and mends slurry.
Further, the mud of balancing reservoir is delivered in board and frame machine by dredge pump is squeezed, and tail water enters in expressing process
To tail water slot and concentration basin is converged into, mud cake falls off after the completion of squeezing.Above is referred to sheet frame charging, sheet frames to squeeze two processes.
Primary bottom-mud dewatering desiccation optimization technological process is illustrated below, is related to help the understanding course of work of the present invention
And mud the conditioning process, sheet frame fill process, sheet frame expressing process arrived.
(1) it when mud improves, detects in the t period and enters the exhausted butt quality in blender
Calculate the mass M that should add material in the t periodMaterial=α * MOver dry, the weight change of material pot is Δ W within the t period, as Δ W
=MMaterialWhen, material addition is completed；When the value of t is infinitely small, it is believed that this t time phase is transients；Each mud tune
Reason process guarantees that this process materials tank weight change total amount is equal to total butt multiplied by addition percentage before terminating.
(2) when sheet frame is fed, the quality of mud fluid in the t period is detectedWhen t value is infinitely small
When, it is believed that it is instantaneous density and flow；Total feedWork as MAlways into slurry=MPhaseWhen, stop charging.
(3) when sheet frame feeds and squeezes, the exhausted butt quality that mud inside board and frame machine is entered in the t period is detectedWhen t value is infinitely small, it is believed that be instantaneous concentration, density and flow；Entirely fed
Cheng ZhongThe real-time moisture content of board and frame machine internal cake in the process
As ω=ωPhaseAfterwards, stop squeezing.Wherein, MTotal tail water=MTail water 1+MTail water 2。
Wherein, blender front end slurry transportation pipeline quality of mud fluid percentage concentration c1It indicates, mud density ρ1, the pipe
Road instantaneous flow f1It indicates；Material addition percentage indicates that material pot weight is indicated with W with α；Balancing reservoir quality of mud fluid percentage
Concentration c2It indicates, mud density ρ2, flow through dredge pump pipeline instantaneous flow f2It indicates；Tail water is discharged in sheet frame fill process
Total amount MTail water 1, tail water goes out water inventory M in sheet frame expressing processTail water 2, accumulative tail water go out water inventory MTotal tail water, board and frame machine charging expectation
Quality MPhaseIt indicates, sheet frame squeezing expectation moisture content ωPhaseWith indicating.
The above are preferred embodiments of the present invention, is not intended to limit the present invention in any form, all foundations
Technical spirit of the invention any simple modification, equivalent change and modification made to the above embodiment, belong to inventive technique
In the range of scheme.
Claims (1)
1. a kind of bottom-mud dewatering desiccation Optimal Control System, it is characterised in that: including data acquisition unit, process optimization processing is single
Member, execution unit, wherein process optimization processing unit by based on programmable logic controller (PLC) (PLC) automatic control system come real
It is existing；
Wherein, execution unit includes conveyer, discharge valve, blender, dredge pump, board and frame machine, above-mentioned working equipment combination concentration basin,
Balancing reservoir, material pot complete mud conditioning process jointly；Along the outbound course of mud, concentration basin, blender, balancing reservoir, sheet frame
Machine passes sequentially through the connection of slurry transportation pipeline；River, lake-bottom mud be delivered to after slagging-off by dredging vessel it is dense
Contracting pond, and be further concentrated in concentration basin, the mud after concentration twists suction ship pump by environmental protection and is delivered in blender；Material pot
For placing material, the material in material pot is added to blender by conveyer, discharge valve；Mud and material are in blender
It is sufficiently reacted by being flow in balancing reservoir certainly after uniform stirring, completes conditioning process；Mud after conditioning is conveyed by dredge pump
Into board and frame machine, and through board and frame machine dehydration and drying；
Wherein, the output end of data acquisition unit is connect with the process optimization processing unit comprising various kinds of sensors, respectively
For flowmeter, ultrasonic wave densimeter, weighing sensor, ultrasonic level gage, liquid-level switch；Flowmeter and ultrasonic wave densimeter are each
There are two, first flowmeter, the first ultrasonic wave densimeter are mounted on the slurry transportation pipeline between concentration basin and blender, are used
To detect the flow f for the mud for entering blender1, concentration c1；Second flowmeter, the second ultrasonic wave densimeter are mounted on balancing reservoir
On slurry transportation pipeline between board and frame machine, to detect the flow f for entering the mud of board and frame machine2, concentration c2；The weighing
Sensor is mounted on material pot tank foot bottom, is used for metering material tank weight W；The ultrasonic level gage is mounted on sheet frame tail
Sink top, for monitoring sheet frame tail water water yield；The liquid-level switch is mounted on above balancing reservoir, for detecting balancing reservoir
Mud level；
Wherein, process optimization processing unit is connect with data acquisition unit and execution unit respectively comprising programmable logic control
Device (PLC) processed, touch screen (HMI)；The touch screen is human-computer interaction device, is passed through programmable logic controller (PLC) (PLC) point
It is not connect with data acquisition unit and execution unit, for showing sensing data, and the touch button by being arranged thereon is grasped
Control execution unit work；Process optimization software module is additionally provided in the programmable logic controller (PLC), it is excellent for realizing technique
Change；
The process optimization software module for realizing:
(a) according to the real-time concentration c of mud in the slurry transportation pipeline of blender front end1, the mud total flow that is delivered in blenderIn conjunction with the accurate optimization control of the physical weight information realization material addition of weighing sensor metering, optimization conditioning
Process does synchronous preparation in real time to feed into board and frame machine；
(b) according to concentration of hydraulic mixture c in balancing reservoir after conditioning2And it is delivered to the mud total flow in board and frame machineCalculate sheet frame
Feed (mud) mass MMaterial, when sheet frame feeds (mud) gross mass MAlways into slurryReach setting desired value MPhaseAfterwards, sheet frame charging is completed,
Realize the optimal control of sheet frame charging (mud) process；
(c) (mud) mass M is fed according to board and frame machineAlways into slurry, tail water go out water inventory MTotal tail water, real-time monitoring sheet frame internal cake contains
Water rate ω, when moisture content ω reaches desired value ωPhaseSqueezing is completed afterwards, realizes the optimal control of sheet frame expressing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183479.XA CN109879570B (en) | 2019-03-12 | 2019-03-12 | Intelligent control system for dewatering and drying bottom mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183479.XA CN109879570B (en) | 2019-03-12 | 2019-03-12 | Intelligent control system for dewatering and drying bottom mud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109879570A true CN109879570A (en) | 2019-06-14 |
| CN109879570B CN109879570B (en) | 2021-11-16 |
Family
ID=66931753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910183479.XA Active CN109879570B (en) | 2019-03-12 | 2019-03-12 | Intelligent control system for dewatering and drying bottom mud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109879570B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498581A (en) * | 2019-08-16 | 2019-11-26 | 中交疏浚技术装备国家工程研究中心有限公司 | A kind of movable type slurry dewatering anhydration system |
| CN113860688A (en) * | 2021-10-22 | 2021-12-31 | 江苏科技大学 | Dewatering-brick making integrated system for high-water-content waste slurry and implementation method |
| CN114455215A (en) * | 2022-02-16 | 2022-05-10 | 中交疏浚技术装备国家工程研究中心有限公司 | Accurate addition system of mud conditioner |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936089A (en) * | 2012-11-28 | 2013-02-20 | 广州中国科学院沈阳自动化研究所分所 | Automatic control system of sludge deep dewatering overall process and treatment method |
| CN103984378A (en) * | 2013-07-18 | 2014-08-13 | 俞元洪 | Control apparatus suitable for mud rapid dehydration system |
| CN103979773A (en) * | 2013-07-18 | 2014-08-13 | 俞元洪 | Flocculant mixing device suitable for sludge rapid dewatering system |
| CN104163548A (en) * | 2014-08-07 | 2014-11-26 | 深圳市丰绿环保科技有限公司 | Zero discharge sewage treatment method |
| CN204918344U (en) * | 2015-08-26 | 2015-12-30 | 成都泰宏节能环保设备有限公司 | Processing system of mud degree of depth dehydration |
| CN106284465A (en) * | 2016-08-16 | 2017-01-04 | 中电建水环境治理技术有限公司 | Lake, river is gushed polluted bed mud and is processed intelligent environment protection dredging system |
| CN107285584A (en) * | 2017-08-17 | 2017-10-24 | 山东省环科院环境工程有限公司 | A kind of ephemeral stream heavy metal polluted bed mud elution processing method and system |
| CN107938737A (en) * | 2017-11-15 | 2018-04-20 | 中交天津港航勘察设计研究院有限公司 | A kind of dystrophication sediment dredging cures disposal continuous treatment method |
| CN109422441A (en) * | 2017-08-31 | 2019-03-05 | 宁波弘海众创空间服务有限公司 | A kind of dredged sediment dehydration and drying integral treatment method |
| CN110498581A (en) * | 2019-08-16 | 2019-11-26 | 中交疏浚技术装备国家工程研究中心有限公司 | A kind of movable type slurry dewatering anhydration system |
| CN112851075A (en) * | 2021-01-19 | 2021-05-28 | 中建八局西南建设工程有限公司 | Automatic dosing method of plate-and-frame filter press for sludge dewatering and solidification |
-
2019
- 2019-03-12 CN CN201910183479.XA patent/CN109879570B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936089A (en) * | 2012-11-28 | 2013-02-20 | 广州中国科学院沈阳自动化研究所分所 | Automatic control system of sludge deep dewatering overall process and treatment method |
| CN103984378A (en) * | 2013-07-18 | 2014-08-13 | 俞元洪 | Control apparatus suitable for mud rapid dehydration system |
| CN103979773A (en) * | 2013-07-18 | 2014-08-13 | 俞元洪 | Flocculant mixing device suitable for sludge rapid dewatering system |
| CN104163548A (en) * | 2014-08-07 | 2014-11-26 | 深圳市丰绿环保科技有限公司 | Zero discharge sewage treatment method |
| CN204918344U (en) * | 2015-08-26 | 2015-12-30 | 成都泰宏节能环保设备有限公司 | Processing system of mud degree of depth dehydration |
| CN106284465A (en) * | 2016-08-16 | 2017-01-04 | 中电建水环境治理技术有限公司 | Lake, river is gushed polluted bed mud and is processed intelligent environment protection dredging system |
| CN107285584A (en) * | 2017-08-17 | 2017-10-24 | 山东省环科院环境工程有限公司 | A kind of ephemeral stream heavy metal polluted bed mud elution processing method and system |
| CN109422441A (en) * | 2017-08-31 | 2019-03-05 | 宁波弘海众创空间服务有限公司 | A kind of dredged sediment dehydration and drying integral treatment method |
| CN107938737A (en) * | 2017-11-15 | 2018-04-20 | 中交天津港航勘察设计研究院有限公司 | A kind of dystrophication sediment dredging cures disposal continuous treatment method |
| CN110498581A (en) * | 2019-08-16 | 2019-11-26 | 中交疏浚技术装备国家工程研究中心有限公司 | A kind of movable type slurry dewatering anhydration system |
| CN112851075A (en) * | 2021-01-19 | 2021-05-28 | 中建八局西南建设工程有限公司 | Automatic dosing method of plate-and-frame filter press for sludge dewatering and solidification |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110498581A (en) * | 2019-08-16 | 2019-11-26 | 中交疏浚技术装备国家工程研究中心有限公司 | A kind of movable type slurry dewatering anhydration system |
| CN113860688A (en) * | 2021-10-22 | 2021-12-31 | 江苏科技大学 | Dewatering-brick making integrated system for high-water-content waste slurry and implementation method |
| CN114455215A (en) * | 2022-02-16 | 2022-05-10 | 中交疏浚技术装备国家工程研究中心有限公司 | Accurate addition system of mud conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109879570B (en) | 2021-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109879570A (en) | Bottom-mud dewatering desiccation Optimal Control System | |
| CN109879571A (en) | Bottom-mud dewatering desiccation optimal control method | |
| CN206568343U (en) | A kind of concrete mixing plant concrete construction matches real-time regulating system | |
| CN206924747U (en) | Full-automatic reactor charging water-adding system | |
| CN110221087B (en) | System and method for testing automatic suction filtration and dehydration performance of gold mine tailing slurry | |
| CN101172372A (en) | Automatic mixture making pulping system | |
| CN205914084U (en) | System for can control starch solution concentration | |
| CN209851302U (en) | Surplus thick liquid density automatic regulating apparatus | |
| CN205941079U (en) | Invariable useless thick liquid concentration detection device of volume | |
| CN204583110U (en) | A kind of automatic recipe maker for superhard material synthesis raw and auxiliary material | |
| CN206645995U (en) | The medicament adding device of high-efficiency concentrator | |
| CN215102791U (en) | Intelligent coal slime high-efficiency concentration treatment system | |
| CN209974581U (en) | Sediment dehydration mummification control facility | |
| CN210699969U (en) | Proportional mixing device for pipeline infusion | |
| CN210022021U (en) | Automatic liquid control system that joins in marriage of bleaching water with measurement function | |
| CN212292949U (en) | Coal slime water concentration system with concentration detection function | |
| CN210699674U (en) | Brewing device for powdery amphoteric dry strength agent | |
| CN209259944U (en) | A kind of automatic size mixing device of continuous milk of lime | |
| CN207578724U (en) | A kind of concrete proportioning device | |
| CN205865787U (en) | Whitewashed system is joined in marriage in succession automatically to flour -mixing machine | |
| CN218724619U (en) | Metering tank of accurate moisturizing | |
| CN209714882U (en) | A kind of device added automatically for industrial solid powder | |
| CN207446055U (en) | Slow release fertilizer sustained release agent intelligence dosage device | |
| CN214261555U (en) | Quantitative feeding and mixing device for dyeing and finishing machinery | |
| CN220649749U (en) | Multichannel raw materials ratio weighing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221226 Address after: No. 12 Gucui Road, Xinchang Town, Pudong New Area, Shanghai, 201314 Patentee after: NATIONAL ENGINEERING RESEARCH CENTER OF DREDGING TECHNOLOGY AND EQUIPMENT Patentee after: CCCC Jianghe Huhai (Shanghai) Technology Co.,Ltd. Address before: No. 12 Gucui Road, Xinchang Town, Pudong New Area, Shanghai, 201314 Patentee before: NATIONAL ENGINEERING RESEARCH CENTER OF DREDGING TECHNOLOGY AND EQUIPMENT |
|
| TR01 | Transfer of patent right |