CN108479438A - A kind of urea for vehicle solution manufacturing method - Google Patents

A kind of urea for vehicle solution manufacturing method Download PDF

Info

Publication number
CN108479438A
CN108479438A CN201810397408.5A CN201810397408A CN108479438A CN 108479438 A CN108479438 A CN 108479438A CN 201810397408 A CN201810397408 A CN 201810397408A CN 108479438 A CN108479438 A CN 108479438A
Authority
CN
China
Prior art keywords
urea
density
vehicle solution
vehicle
solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810397408.5A
Other languages
Chinese (zh)
Inventor
蔡建清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Green Force Environmental Protection Science And Technology Development Co Ltd
Original Assignee
Guizhou Green Force Environmental Protection Science And Technology Development Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guizhou Green Force Environmental Protection Science And Technology Development Co Ltd filed Critical Guizhou Green Force Environmental Protection Science And Technology Development Co Ltd
Priority to CN201810397408.5A priority Critical patent/CN108479438A/en
Publication of CN108479438A publication Critical patent/CN108479438A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F21/00—Dissolving
    • B01F21/10—Dissolving using driven stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F21/00—Dissolving
    • B01F21/02—Methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F21/00—Dissolving
    • B01F21/30—Workflow diagrams or layout of plants, e.g. flow charts; Details of workflow diagrams or layout of plants, e.g. controlling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/213—Measuring of the properties of the mixtures, e.g. temperature, density or colour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/2134—Density or solids or particle number
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2209—Controlling the mixing process as a whole, i.e. involving a complete monitoring and controlling of the mixing process during the whole mixing cycle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Accessories For Mixers (AREA)

Abstract

The invention discloses a kind of urea for vehicle solution makers, are related to field of environment protection, and the method produces urea for vehicle solution for urea for vehicle solution manufacturing device, the method includes：Whether in running order monitor the agitating device in real time；If the agitating device is in halted state, detect whether the detected liquid level of the liquid level detection device institute is stablized；Then, in the case of level stability, consecutive intervals acquire the density value measured by the described at least two density acquisition sensors；Then, it according to the density value, controls the first material and module or second material addition module is added, increase first material or second material to the teeter chamber.The present invention is in the case where stirring evenly, and by current density value compared with the second solution density pre-set interval of standard, to judge whether urea for vehicle solution is qualified, and further charging processing is done, to improve the qualification rate of whole urea for vehicle concentration.

Description

A kind of urea for vehicle solution manufacturing method
Technical field
The present invention relates to field of environment protection, more particularly to a kind of urea for vehicle solution manufacturing method.
Background technology
Urea for vehicle solution (AdBlue) is prepared together with the high-purity urea and pure water for being free of other any additives Solution, urea content is 32.5% (mass fraction) in the solution.Most of domestic and international large diesel engine producer uses SCR (selective catalytic reduction) technology meets the requirement of Europe IV, V vehicle emission standards of Europe.Select the vehicle of SCR technology must Urea liquid must be added as catalytic reducer, make vehicle qualified discharge.
In the prior art, the production of urea for vehicle solution is mixed and is formed using high purity water and high-purity urea proportioning , the ratio of the two is obtained by calculated in advance.Due to being calculated in advance, in moisture evaporation or material in the two production process It is not easy to be adjusted urea for vehicle solution concentration in the case of pan feeding inaccuracy.
Invention content
In view of the above-mentioned at least part of defect of the prior art, the technical problem to be solved by the present invention is to automobile-used urine Plain solution is in process of production since the factors such as material evaporation or material pan feeding inaccuracy cause urea for vehicle solution and expection Compared to changing, it is unable to on-line tuning and stirs indoor urea for vehicle solution concentration.The present invention is intended to provide a kind of automobile-used urine Plain solution manufacturing method can realize on-line tuning urea for vehicle solution concentration.
To achieve the above object, a kind of urea for vehicle solution manufacturing method is provided in the present invention, and the method is used for vehicle Urea for vehicle solution is produced with urea liquid manufacturing device, the urea for vehicle solution manufacturing device includes teeter chamber, described to stir It mixes interior and is provided with agitating device；It is automobile-used for detecting that the indoor following different height of liquid level of stirring is equipped at least two The density of urea solution density acquires sensor；Teeter chamber's madial wall is equipped with the level sensing for detecting liquid level and fills It sets；The urea for vehicle solution manufacturing device further includes that module is added in first material, module, master controller mould is added in second material Block；First output end of the master controller connects the first material and module, the second output terminal of the master controller is added It connects the second material and module is added, the third input section of the master controller connects the density and acquires sensor；It is described 4th input terminal of master controller connects the liquid level detection device；The method includes：
Step S1, whether in running order the agitating device is monitored in real time；If the agitating device is in work shape State thens follow the steps S1；If the agitating device is in halted state, S2 is thened follow the steps；
Step S2, detect whether the detected liquid level of the liquid level detection device institute is stablized；If the liquid level is in steady Determine state and then follow the steps S3, otherwise executes step S2；
Step S3, consecutive intervals acquire the density value ρ measured by the described at least two density acquisition sensorsij；It holds Row step S4；Wherein, the i is the label that the density acquires sensor, and the j is that this density value is acquired marked as i's J-th of density value that the density acquisition sensor is acquired；The i is positive integer, and the j is positive integer；
Step S4, according to the density value ρij, the corresponding region of at least two density acquisition sensor Between density variation；It is more than the first pre-set density difference value in response to the density variation, starts the agitating device, executes The stirring operation instruction of a length of T when stirring, and step S2 is executed after the stirring operation instruction execution is complete；In response to described close It spends difference and is less than or equal to the first pre-set density difference value, execute step S5；
Step S5, according to the density value ρij, judge whether the indoor urea for vehicle solution of the stirring meets the Two solution density pre-set intervals；If the urea for vehicle solution meets the second solution density pre-set interval, this batch is completed Secondary automobile-used urea liquid manufacturing operation；Conversely, then according to the density value ρij, control the first material and module or described be added Module is added in second material, increases first material or second material to the teeter chamber.
In the technical scheme, by being in halted state and automobile-used urea for vehicle solution level balance in agitating device In the case of, the density value of different location is measured, solution flowing is avoided to impact single locus density value measurement； It in the technical solution, is measured by the density value of different location, effectively differentiates and stir whether indoor urea for vehicle solution stirs Uniformly, to be stirred again；In the technical scheme, in the case where stirring evenly, by current density value and standard Second solution density pre-set interval compares, and to judge whether urea for vehicle solution is qualified, and does further charging processing, with Just the qualification rate of whole urea for vehicle concentration is improved.
In a specific embodiment, the urea for vehicle solution manufacturing device further includes for weighing in the stir chamber The Weighing module of urea for vehicle solution gross mass, it is described according to the density value ρij, control the first material be added module or Module is added in the second material, increases first material or second material to the teeter chamber, further includes：
According to the density value ρij, it is close to judge whether the indoor urea for vehicle solution of stirring meets the second solution Spend pre-set interval；
In response to the density value ρijMean value be less than the second solution density pre-set interval minimum value, stirred to described It is M to mix room to increase qualityadd_1First material；It is describedOr in response to the density value ρijMean value be more than the second solution density pre-set interval maximum value, to the teeter chamber increase quality be Madd_2 Two materials；It is described
Wherein, the MallFor current automobile-used urea liquid gross mass；The nsetFor the more excellent concentration set point of urea for vehicle； The ρ is the density value ρijMean value, the KTem、bTemCONCENTRATION DENSITY respectively in the case where temperature is the atmospheric pressure environment of Tem Relation curve ρ=KTemn+bTemStraight slope and curve and ρ y-intercepts.
In the technical scheme, feeding quantity solution is carried out by density value, effectively improves the accuracy of feeding quantity.By close Angle value obtains the existing concentration of urea for vehicle solutionAnd further solve obtain first material or second material plus Doses improves charging accuracy.
Optionally, at 20 DEG C, the second solution density pre-set interval is [1087kg/m3, 1093kg/m3]。
In a specific embodiment, the urea for vehicle solution manufacturing device further includes that setting and the stirring are indoor In the temperature sensor of detection urea for vehicle solution temperature, the 5th input terminal and the temperature sensor of the master controller Output end connects；Described automobile-used the method further includes：
The first temperature for acquiring the urea for vehicle solution determines the CONCENTRATION DENSITY relationship according to first temperature The straight slope K of curveTemAnd the curve and ρ y-intercepts bTem。
In the technical scheme, by knowing the temperature of current solution, parameter of curve at this temperature is obtained, to obtain CONCENTRATION DENSITY relation curve.
In a specific embodiment, the method further includes：According to agitating device described in the main controller controls Control operation, knows the working condition of the agitating device.
In a specific embodiment, the urea for vehicle solution process units further includes being installed on the agitating device Vibration acquisition device, the working condition for acquiring the agitating device.
In a specific embodiment, the first material is urea for vehicle particle, and the second material is high purity water.
The beneficial effects of the invention are as follows：1), by being in halted state and automobile-used urea for vehicle solution in agitating device In the case of liquid level equilibrium, the density value of different location is measured, solution flowing is avoided to make single locus density value measurement At influence；2) it, is measured by the density value of different location, effectively differentiates and stir whether indoor urea for vehicle solution stirs It is even, to be stirred again；3), in the case where stirring evenly, the second solution density of current density value and standard is pre- If section is compared, to judge whether urea for vehicle solution is qualified, and further charging processing is done, it is whole automobile-used to improve The qualification rate of urea concentration；4) feeding quantity solution, is carried out by density value, effectively improves the accuracy of feeding quantity.Pass through density Value obtains the existing concentration of urea for vehicle solutionAnd further solve the charging for obtaining first material or second material Amount improves charging accuracy.
Description of the drawings
Fig. 1 is a kind of flow diagram for urea for vehicle solution manufacturing method that the embodiment of the invention provides；
Fig. 2 is the CONCENTRATION DENSITY matched curve under different temperatures in the embodiment of the invention；
Fig. 3 is a kind of structural schematic diagram for urea for vehicle solution maker that the embodiment of the invention provides；
Fig. 4 is the schematic block circuit diagram of the urea for vehicle solution manufacturing method of the embodiment of the invention.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples：
Include only two kinds of raw materials of high-purity urea and high purity water since urea for vehicle production supplied materials is fixed.Material composition is fixed And it is simple, it can effectively know the ingredient ratio in urea for vehicle solution by measuring urea for vehicle solution density, and do further Concentration adjustment.
Going out in GB29518-2013 documents, the best urea quality of urea for vehicle is 31.8%-33.2% than content, and And at 20 DEG C, density value 1087kg/m3-1093kg/m3, and the desired value of the two is 32.5% and 1090kg/m3。
As shown in Figs 1-4, in the first embodiment of the invention, a kind of urea for vehicle solution manufacturing method, the side are provided Method produces urea for vehicle solution for urea for vehicle solution manufacturing device, and the urea for vehicle solution manufacturing device includes stirring Room is provided with agitating device in the teeter chamber；The indoor following different height of liquid level of stirring is equipped at least two use Sensor is acquired in the density of detection urea for vehicle solution density；Teeter chamber's madial wall is equipped with the liquid for detecting liquid level Level detecting apparatus；The urea for vehicle solution manufacturing device further includes that module is added in first material, module, master is added in second material Controller module；First output end of the master controller connects the first material and is added module, and the of the master controller Two output ends connect the second material and module are added, and the third input section of the master controller connects the density acquisition sensing Device；4th input terminal of the master controller connects the liquid level detection device；The method includes：
Step S1, whether in running order the agitating device is monitored in real time；If the agitating device is in work shape State thens follow the steps S1；If the agitating device is in halted state, S2 is thened follow the steps；
Step S2, detect whether the detected liquid level of the liquid level detection device institute is stablized；If the liquid level is in steady Determine state and then follow the steps S3, otherwise executes step S2；
Step S3, consecutive intervals acquire the density value ρ measured by the described at least two density acquisition sensorsij；It holds Row step S4；Wherein, the i is the label that the density acquires sensor, and the j is that this density value is acquired marked as i's J-th of density value that the density acquisition sensor is acquired；The i is positive integer, and the j is positive integer；
Step S4, according to the density value ρij, the corresponding region of at least two density acquisition sensor Between density variation；It is more than the first pre-set density difference value in response to the density variation, starts the agitating device, executes The stirring operation instruction of a length of T when stirring, and step S2 is executed after the stirring operation instruction execution is complete；In response to described close It spends difference and is less than or equal to the first pre-set density difference value, execute step S5；
Step S5, according to the density value ρij, judge whether the indoor urea for vehicle solution of the stirring meets the Two solution density pre-set intervals；If the urea for vehicle solution meets the second solution density pre-set interval, this batch is completed Secondary automobile-used urea liquid manufacturing operation；Conversely, then according to the density value ρij, control the first material and module or described be added Module is added in second material, increases first material or second material to the teeter chamber.
Optionally, the stirring duration T is preset value；Optionally, the stirring duration T is set by the user；Optionally, institute It is related to the density variation to state stirring duration T.
Optionally, the stirring duration T and the relationship of the density variation are obtained by experiment；Further, by experiment, intend Close the relation curve of stirring the duration T and the density variation.
Optionally, a length of 1min when stirring, optionally, when stirring a length of 5min.
In the present embodiment, the urea for vehicle solution manufacturing device further includes for weighing automobile-used urine in the stir chamber The Weighing module of plain solution gross mass, it is described according to the density value ρij, control the first material and module or described the be added Module is added in two materials, increases first material or second material to the teeter chamber, further includes：
According to the density value ρij, it is close to judge whether the indoor urea for vehicle solution of stirring meets the second solution Spend pre-set interval；
In response to the density value ρijMean value be less than the second solution density pre-set interval minimum value, stirred to described It is M to mix room to increase qualityadd_1First material；It is describedOr in response to the density value ρijMean value be more than the second solution density pre-set interval maximum value, to the teeter chamber increase quality be Madd_2 Two materials；It is described
Wherein, the MallFor current automobile-used urea liquid gross mass；The nsetFor the more excellent concentration set point of urea for vehicle； The ρ is the density value ρijMean value, the KTem、bTemCONCENTRATION DENSITY respectively in the case where temperature is the atmospheric pressure environment of Tem Relation curve ρ=KTemn+bTemStraight slope and curve and ρ y-intercepts.
Optionally, the nsetFor 31.8%-33.2%；Preferably, the nsetIt is 32.5%.
Optionally, the second solution density pre-set interval changes with temperature difference；Optionally, by meeting country The urea for vehicle of standard is tested at different temperatures, and obtains the second solution density pre-set interval；Optionally, pass through The the second solution density pre-set interval tabled look-up at each temperature of acquisition.
Optionally, at 20 DEG C, the second solution density pre-set interval is [1087kg/m3,1093kg/m3]。
The CONCENTRATION DENSITY relation curve ρ=KTemn+bTemIt is obtained by fitting experimental data.0 DEG C -100 is given in table 1 CONCENTRATION DENSITY experiment value under DEG C (be divided into 5 DEG C) is set forth in Fig. 2 dense under 0 DEG C -100 DEG C (be divided into 5 DEG C) Degree-density relationship curve fitted figure.
In the present embodiment, the urea for vehicle solution manufacturing device further includes being arranged and being used to detect in the teeter chamber The temperature sensor of urea for vehicle solution temperature, the output end of the 5th input terminal and the temperature sensor of the master controller Connection；Described automobile-used the method further includes：
The first temperature for acquiring the urea for vehicle solution determines the CONCENTRATION DENSITY relationship according to first temperature The straight slope K of curveTemAnd the curve and ρ y-intercepts bTem。
In the present embodiment, it is tested at different temperatures, obtains the close of the high-purity water mixed liquid of urea-of various concentration Degree, it is respectively the actual density value under 0%, 10%, 20%, 30%, 40% that experiment, which obtains concentration, and the density unit in table is t/m3, i.e. every cubic metre of ton.It is noted that the supplementary data table that can improve in actual production, each to generate At a temperature of CONCENTRATION DENSITY relation curve.Optionally, for the data not having in table, basis and adjacent data can be passed through Euler's distance or quantity difference, are scaled the proportionate relationship with adjacent data values, to obtain approximation；Optionally, by adjacent Data obtain the approximation of this number.
CONCENTRATION DENSITY under 1 different temperatures of table tests measurement table
Feeding quantity solution throughway of the present invention is：Based on CONCENTRATION DENSITY relation curve, pass through current automobile-used solution concentration Density value obtains actual concentration value, and according to concentration value know this should increased material and the amount that adds materials, It is derivation below：
First, according to CONCENTRATION DENSITY relation curve ρ=KTemn+bTemKnown to：
To make the indoor urea for vehicle solution concentration (mass ratio) of stirring reach predetermined value nset, increase by teeter chamber After the high-purity urea of one material, following relationship should be met：
As available from the above equation：
It can further be obtained by (1), (3)：
To make the indoor urea for vehicle solution concentration (mass ratio) of stirring reach predetermined value nset, increase by teeter chamber After two material high purity waters, following relationship should be met：
As available from the above equation：
It can further obtain：
It is noted that the weighing of urea for vehicle solution is state of the art, usually detection stirring in the prior art Indoor urea for vehicle solution quality, which is not described herein again.
Optionally, the method further includes：It is operated, is known according to the control of agitating device described in the main controller controls The working condition of the agitating device.
Optionally, the urea for vehicle solution process units further includes the vibration acquisition being installed on the agitating device Device, the working condition for acquiring the agitating device.
In the present embodiment, the first material is urea for vehicle particle, and the second material is high purity water.
It is noted that optional, first material feeding mouth connects first material feeding device, and the first material enters Material device includes that material metage module and charging control module, second material feeding mouth connect second material feeding device, institute It includes material metage module and charging control module to state second material feeding device, and the relevant technologies feed intake existing with reference to urea for vehicle There is technology, which is not described herein again.
In addition, in figure 3, abscissa is concentration, ordinate is density, and Fig. 3 fits the concentration-under different temperatures respectively Density relationship curve.
As shown in Figs 1-4, in second embodiment of the invention, a kind of urea liquid manufacturing machine, the automobile-used urine are provided Plain solution maker includes teeter chamber；It is provided with agitating device in the teeter chamber；It is different below the indoor liquid level of stirring Height is equipped at least two and acquires sensor for detecting the density of urea for vehicle solution density；Teeter chamber's madial wall peace Equipped with the liquid level detection device for detecting liquid level；The urea for vehicle solution manufacturing device further includes that mould is added in first material Module, main controller module is added in block, second material；First output end of the master controller connects the first material and is added Module, the second output terminal of the master controller connect the second material and module, the third input of the master controller are added Section connects the density and acquires sensor；4th input terminal of the master controller connects the liquid level detection device；It is described to stir It mixes and is additionally provided with vibration acquisition device on device, it is whether in running order for monitoring the agitating device in real time；The master control Device processed is additionally operable to judge whether the urea for vehicle solution level is stablized according to the liquid level that the liquid level detection device is acquired；Institute Stating master controller further includes：
Density acquisition control module, measured by the described at least two density acquisition sensor of consecutive intervals acquisition Density value ρij；Wherein, the i is the label that the density acquires sensor, and the j is that this density value is acquired marked as i J-th of density value being acquired of density acquisition sensor；The i is positive integer, and the j is positive integer；
Density variation respond module, for according to the density value ρij, at least two density acquisition biography Density variation between the corresponding region of sensor；It is more than the first pre-set density difference value in response to the density variation, starts institute Agitating device is stated, the stirring operation instruction of a length of T when stirring is executed；
Solution density qualification detection module, for according to the density value ρij, judge that the stirring is indoor described automobile-used Whether urea liquid meets the second solution density pre-set interval；If it is pre- that the urea for vehicle solution meets second solution density If section, then this batch urea for vehicle solution manufacturing operation is completed；Conversely, then according to the density value ρij, control described first Module is added in material or module is added in the second material, increases first material or second material to the teeter chamber.
In the present embodiment, the urea for vehicle solution maker further includes for weighing urea for vehicle in the stir chamber The Weighing module of solution gross mass；Solution density qualification detection module further includes：
Wherein, the MallFor current automobile-used urea liquid gross mass；The nsetFor the more excellent concentration set point of urea for vehicle； The ρ is the density value ρijMean value, the KTem、bTemCONCENTRATION DENSITY respectively in the case where temperature is the atmospheric pressure environment of Tem Relation curve ρ=KTemn+bTemStraight slope and curve and ρ y-intercepts.
Optionally, at 20 DEG C, the second solution density pre-set interval is [1087kg/m3, 1093kg/m3]。
In the present embodiment, the urea for vehicle solution maker further includes in setting and the teeter chamber for detecting vehicle With the temperature sensor of urea solution temperature, the 5th input terminal of the master controller connects with the output end of the temperature sensor It connects；The master controller is additionally operable to acquire the first temperature of the urea for vehicle solution, according to first temperature determination The straight slope K of CONCENTRATION DENSITY relation curveTemAnd the curve and ρ y-intercepts bTem。
Optionally, the master controller is additionally operable to be operated according to the control of agitating device described in the main controller controls, Know the working condition of the agitating device.
In the present embodiment, the first material is urea for vehicle particle, and the second material is high purity water.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea Technical solution, all should be in the protection domain being defined in the patent claims.

Claims (7)

1. a kind of urea for vehicle solution manufacturing method, which is characterized in that the method is given birth to for urea for vehicle solution manufacturing device Urea for vehicle solution is produced, the urea for vehicle solution manufacturing device includes teeter chamber, and agitating device is provided in the teeter chamber； The indoor following different height of liquid level of stirring is equipped at least two and is adopted for detecting the density of urea for vehicle solution density Collect sensor；Teeter chamber's madial wall is equipped with the liquid level detection device for detecting liquid level；The urea for vehicle solution system It further includes that module is added in first material, module, main controller module is added in second material to make device；The first of the master controller Output end connects the first material and module is added, and the second output terminal of the master controller connects the second material and mould is added Block, the third input section of the master controller connect the density and acquire sensor；4th input terminal of the master controller connects Connect the liquid level detection device；The method includes：
Step S1, whether in running order the agitating device is monitored in real time；If the agitating device is in running order, Execute step S1；If the agitating device is in halted state, S2 is thened follow the steps；
Step S2, detect whether the detected liquid level of the liquid level detection device institute is stablized；If the liquid level, which is in, stablizes shape State thens follow the steps S3, otherwise executes step S2；
Step S3, consecutive intervals acquire the density value ρ measured by the described at least two density acquisition sensorsij；Execute step Rapid S4；Wherein, the i is the label that the density acquires sensor, and the j is that this density value is acquired marked as described in i J-th of density value that density acquisition sensor is acquired；The i is positive integer, and the j is positive integer；
Step S4, according to the density value ρij, between the corresponding region of at least two density acquisition sensor Density variation；It is more than the first pre-set density difference value in response to the density variation, starts the agitating device, execute stirring The stirring operation of Shi Changwei T instructs, and step S2 is executed after the stirring operation instruction execution is complete；In response to the density contrast It is different to be less than or equal to the first pre-set density difference value, execute step S5；
Step S5, according to the density value ρij, it is molten to judge whether the indoor urea for vehicle solution of stirring meets second Liquid-tight degree pre-set interval；If the urea for vehicle solution meets the second solution density pre-set interval, this batch vehicle is completed With urea liquid manufacturing operation；Conversely, then according to the density value ρij, control the first material and module or described second be added Module is added in material, increases first material or second material to the teeter chamber.
2. a kind of urea for vehicle solution manufacturing method as described in claim 1, which is characterized in that the urea for vehicle solution system It further includes the Weighing module for weighing urea for vehicle solution gross mass in the stir chamber to make device, described according to the density Value ρij, control the first material and module or second material addition module be added, increase first material to the teeter chamber Or second material, further include：
According to the density value ρij, it is pre- to judge whether the indoor urea for vehicle solution of stirring meets the second solution density If section；
In response to the density value ρijMean value be less than the second solution density pre-set interval minimum value, to the teeter chamber Increase quality is Madd_1First material；It is describedOr in response to the density value ρij's Mean value is more than the maximum value of the second solution density pre-set interval, and it is M to increase quality to the teeter chamberadd_2The second object Material；It is described
Wherein, the MallFor current automobile-used urea liquid gross mass；The nsetFor the more excellent concentration set point of urea for vehicle；It is described ρ is the density value ρijMean value, the KTem、bTemCONCENTRATION DENSITY relationship respectively in the case where temperature is the atmospheric pressure environment of Tem Curve ρ=KTemn+bTemStraight slope and curve and ρ y-intercepts.
3. a kind of urea for vehicle solution manufacturing method as claimed in claim 2, which is characterized in that at 20 DEG C, described second Solution density pre-set interval is [1087kg/m3, 1093kg/m3]。
4. a kind of urea for vehicle solution manufacturing method as claimed in claim 2, which is characterized in that the urea for vehicle solution system It further includes setting and the temperature sensor for detecting urea for vehicle solution temperature in the teeter chamber, the main control to make device 5th input terminal of device is connect with the output end of the temperature sensor；Described automobile-used the method further includes：
The first temperature for acquiring the urea for vehicle solution determines the CONCENTRATION DENSITY relation curve according to first temperature Straight slope KTemAnd the curve and ρ y-intercepts bTem。
5. a kind of urea for vehicle solution manufacturing method as described in claim 1, which is characterized in that the method further includes：Root It is operated according to the control of agitating device described in the main controller controls, knows the working condition of the agitating device.
6. a kind of urea for vehicle solution manufacturing method as described in claim 1, which is characterized in that the urea for vehicle solution life It further includes the vibration acquisition device being installed on the agitating device, the working condition for acquiring the agitating device to produce device.
7. a kind of urea for vehicle solution manufacturing method as described in claim 1, which is characterized in that the first material is automobile-used Urea granules, the second material are high purity water.
CN201810397408.5A 2018-04-28 2018-04-28 A kind of urea for vehicle solution manufacturing method Pending CN108479438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810397408.5A CN108479438A (en) 2018-04-28 2018-04-28 A kind of urea for vehicle solution manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810397408.5A CN108479438A (en) 2018-04-28 2018-04-28 A kind of urea for vehicle solution manufacturing method

Publications (1)

Publication Number Publication Date
CN108479438A true CN108479438A (en) 2018-09-04

Family

ID=63314243

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810397408.5A Pending CN108479438A (en) 2018-04-28 2018-04-28 A kind of urea for vehicle solution manufacturing method

Country Status (1)

Country Link
CN (1) CN108479438A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109289622A (en) * 2018-12-06 2019-02-01 郑州信息科技职业学院 A kind of self- poking arrangement
CN114100490A (en) * 2021-10-29 2022-03-01 湖南天大生物科技股份有限公司 Production and preparation device and process of hand sanitizer with taxus chinensis

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205007871U (en) * 2015-09-08 2016-02-03 北京首创清源环境科技有限公司 Three -dimensional spiral self -loopa agitating unit
EP3012014A1 (en) * 2014-10-21 2016-04-27 Christoph Dunschat Liquid treatment system
CN107324554A (en) * 2017-06-23 2017-11-07 山东新蓝环保科技有限公司 A kind of manufacture method and manufacture system of urea for vehicle solution
CN207221791U (en) * 2017-08-17 2018-04-13 太和县大维食品有限公司 A kind of weak brine matching device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3012014A1 (en) * 2014-10-21 2016-04-27 Christoph Dunschat Liquid treatment system
CN205007871U (en) * 2015-09-08 2016-02-03 北京首创清源环境科技有限公司 Three -dimensional spiral self -loopa agitating unit
CN107324554A (en) * 2017-06-23 2017-11-07 山东新蓝环保科技有限公司 A kind of manufacture method and manufacture system of urea for vehicle solution
CN207221791U (en) * 2017-08-17 2018-04-13 太和县大维食品有限公司 A kind of weak brine matching device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109289622A (en) * 2018-12-06 2019-02-01 郑州信息科技职业学院 A kind of self- poking arrangement
CN114100490A (en) * 2021-10-29 2022-03-01 湖南天大生物科技股份有限公司 Production and preparation device and process of hand sanitizer with taxus chinensis

Similar Documents

Publication Publication Date Title
CN108479438A (en) A kind of urea for vehicle solution manufacturing method
CN209117519U (en) A kind of ammonium nitrate solution preparation system and its concentration detection apparatus
CN108479507A (en) A kind of urea for vehicle solution maker
EP3700351B1 (en) Real-time quality monitoring of beverage batch production using densitometry
CN103706318B (en) Laboratory intelligent response system and control method thereof
CN106277299A (en) A kind of aeration control system based on oxygen consumption rate analyzer and method
CN115219698A (en) Concrete slump on-line detection method
CN113942121B (en) Control method, processor and device for aggregate water content of mixing station
CN106018505A (en) Calibration method for concrete chlorine ion content meter
CN208082381U (en) A kind of automatic medicament feeding system for waste water control
CN114813847A (en) Method and device for in-situ detection of activated carbon adsorption saturation of gas phase adsorption bed
CN208984637U (en) A kind of slump Online Monitoring Control System
CN103033049A (en) Negative pressure control method and negative pressure control system for main exhaust fan of sintering machine
CN113290695A (en) Filling slurry concentration regulation and control method and system based on current signal feedback
CN103033054B (en) Negative pressure control method and negative pressure control system for main exhaust fan of sintering machine
CN112098598B (en) Detection method and detection device for mixing effect of mixer
CN103033055A (en) Air volume control method and air volume control system for main exhaust fan of sintering machine
CN106198845A (en) Ion chromatogram eluate and automatically configure device and method of automatic configuration continuously
CN106807260A (en) Many standard gas generator control systems and combined system and method
CN103017534B (en) Method and system for controlling negative pressure of main draft fan of sintering machine
CN211800562U (en) Formaldehyde-free shaping agent recovery system for mineral wool continuous production
CN106556707B (en) Full-automatic halogen gas measuring device
CN104390321B (en) Central air-conditioning system and device and method for controlling water treating device of central air-conditioning system
CN207874524U (en) Full-automatic cement thermostatted water curing box
CN215493181U (en) On-line combined solution concentration analysis 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
RJ01 Rejection of invention patent application after publication

Application publication date: 20180904

RJ01 Rejection of invention patent application after publication