CN101339115A - Mixture density checking method and system - Google Patents
Mixture density checking method and system Download PDFInfo
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- CN101339115A CN101339115A CNA2008102108335A CN200810210833A CN101339115A CN 101339115 A CN101339115 A CN 101339115A CN A2008102108335 A CNA2008102108335 A CN A2008102108335A CN 200810210833 A CN200810210833 A CN 200810210833A CN 101339115 A CN101339115 A CN 101339115A
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Abstract
The invention relates to a density detection method of mixture, which includes the following steps: calculating the total weight of various materials which are transmitted from an internal bunker in the first time span, tracking the transmission of each material, detecting the volume of the mixture which is transmitted from the mixture bunker in the first time span when the materials are transmitted to the mixture bunker, dividing the total weight of the materials by the volume of the mixture, and acquiring the quotient as the density of the mixture. Simultaneously, the invention discloses a detection system of the density of the mixture. The detection system can track the transmission of the input materials, so that the total weight of the materials transmitted into the mixture bunker in the first time span corresponds to the volume of the output mixture. The calculated density of the mixture can accurately reflect the density of the current mixture.
Description
Technical field
The present invention relates to the steel sintering field, particularly relate in sintering process the Density Detection problem of compound in the mixing container.
Background technology
Referring to Fig. 1, be the agglomeration for iron mine system schematic, ore deposit groove group 10 comprises a plurality of ore deposits groove, each ore deposit groove is equipped with a kind of raw material, raw material comprises smart iron ore, solvent, fuel and assorted material etc., during work, each ore deposit groove of ore deposit groove group 10 is dumped into plurality of raw materials on the amalgamation belt 11 of below by a certain percentage, amalgamation belt 11 mixes various raw materials, send into primary mixer 12 and once add water, be transported to second drum mixer 14 and carry out secondary and add water by mixing two belts 13 again, form compound, more successively through burning a belt 15, burning two belts 16 and be transported to mixing container 17.
Mixing container 17 is surge bins, and the material level that is used to keep certain is pallet 19 feed.During feed, mixing container 17 is transported to compound on the nine roller material distributing machine 18 earlier, nine roller material distributing machine 18 again with compound cloth on sintering pallet 19.For ease of the roasting of compound, on sintering pallet 19, lay one deck grate-layer material earlier, the grate-layer material top re-lays compound, sintering pallet 19 moves in blast furnace, mixture roasting is become sinter, after broken, cooling, screening, be transported to 20 storages of finished product ore storage bin.
In above-mentioned agglomeration for iron mine system, the sintering flow of sintering pallet 19 is one of important parameters of weighing system works efficient, and by the sintering flow, system regulates the travelling speed of each ingredient, makes each ingredient coordinated operation, increases work efficiency.Generally adopt following formula to calculate the sintering flow at present:
In the formula 1, Wi is the sintering flow, sp_speed is the running speed of sintering pallet 19, sp_width is the width of sintering pallet 19, and CH is the bed thickness of compound on the sintering pallet 19, and CH0 is the thickness of grate-layer material on the sintering pallet 19, KB1*PB1 is a mixture density on the sintering pallet 19, KB1 is a constant, is empirical value, but PB1 is a correction factor.Wherein, Sp_with is a constant, and CH and CH0 can pass through the bed thickness instrument measurement, and sp_speed can adopt speed measuring instrument to measure, and has only mixture density to obtain by measuring directly, and therefore, detecting mixture density is to calculate sintering flow key point.
Detect mixture density, must detect the current quality of compound earlier and work as front volume, but, be difficult to the mixture quality of input is accurately detected because mixing container 17 needs charging simultaneously and discharging.As shown in Figure 1, the various raw materials that hopper group 10 is carried need just to arrive mixing container 17 through a plurality of links of transporting such as amalgamation belt 11, mixed two belts 13, burning one belt 15, burning two belts 16, these transport link needs the long time, compound in the mixing container 17 is not made up of the various raw materials of hopper group 10 current conveyings, but form by the various raw materials that hopper group 10 is carried for the previous period, like this, just be difficult to obtain the current quality of compound by the various raw material quality of easy detection hopper group 10 current conveyings.Therefore, detecting mixture density is to calculate sintering flow difficult point.
But in the formula 1 the product representation mixture density that adopts constant and correction factor, but in sintering process, the ratio that ore deposit groove group 10 is transported to various raw materials on the amalgamation belt 11 changes, the amount of water of primary mixer 12 and second drum mixer 14 also changes, the feasible density of sending into the compound of mixing container 17 constantly changes, but uses the constant and the product of correction factor can't accurately reflect the current density of compound.
Summary of the invention
Technical matters to be solved by this invention provides a kind of mixture density detection method, and this detection method can accurately detect the current density value of compound.
Another object of the present invention provides a kind of mixture density detection system, and this detection system can accurately detect the current density value of compound.
The present invention discloses a kind of detection method of mixture density, comprise: the gross mass of the various materials of feed bin group output in the statistics very first time length, follow the tracks of the course of conveying of described various materials, when described various mass transport arrive mixing container, begin to detect the volume of the compound of described mixing container output in the described very first time length, divided by mixture volume, the merchant who obtains is as mixture density with various material gross masses.
Preferably, in various material conveying process,, detect the quality of the new material of input in very first time length if any new material input, with the gross mass of described various materials and the quality addition of described new material, the gross mass that obtains and be updated to various materials.
Preferably, the volume of the compound of described mixing container output also comprises simultaneously in detecting described very first time length: the material level variable quantity that detects described mixing container in described very first time length; The gross mass and the described material level variable quantity of described various materials are subtracted each other the gross mass that obtains and be updated to various materials.
Preferably, also comprise: described mixture density be multiply by first correction factor, and the product that obtains is updated to mixture density.
Preferably, respectively the flow variable and the time of various materials are carried out integration 2 times, calculate the quality that this material is imported in described very first time length; With the integral result addition, obtain and as the gross mass of various materials.
Preferably, the gross mass of described various materials be multiply by second correction factor, the product that obtains is updated to the gross mass of various materials.
Preferably, respectively travelling speed variable, compound thickness variable and the time of sintering pallet are carried out integration 3 times, obtain the integral result in the described very first time length, integral result be multiply by the sintering pallet width again, the numerical value that obtains is as the volume of compound.
Preferably, also comprise: establishing described very first time length is first computation period, and the mixture density that calculates is as first mixture density; If described very first time length is second computation period, the mixture density that calculates is as second mixture density; First, second mixture density be multiply by first, second weighting coefficient respectively, again with the product addition, obtain and be updated to mixture density.
Preferably, described first, second weighting coefficient and be 1.
Preferably, also comprise: whether judgement time surpasses the default update cycle at interval, as surpassing the update cycle, upgrades mixture density.
The present invention also discloses a kind of detection system of mixture density, comprise feed bin group and mixing container, also comprise quality of material detection module, material tracking module, mixture volume detection module, reach the mixture density computing module: described quality of material detection module, the gross mass that is used to add up the various materials of described feed bin group output in the very first time length; Described material tracking module is used to follow the tracks of the course of conveying of described various materials, when described various mass transport to described mixing container, start described mixture volume detection module; Described mixture volume detection module is used to detect the volume of the compound of described mixing container output in the described very first time length; Described mixture density computing module is used for various material gross masses divided by mixture volume, and the merchant who obtains is as mixture density.
Preferably, also comprise: the quality of material update module, be used at various material conveying process, if any new material input, the quality of new material is imported in detection in very first time length, with the gross mass of described various materials and the quality addition of described new material, the gross mass that obtains and be updated to various materials.
Preferably, also comprise: the material level detection module, be used to detect the material level variable quantity of described mixing container in described very first time length, described material level variable quantity is sent to described quality of material update module; Described quality of material update module is subtracted each other the gross mass and the described material level variable quantity of described various materials, and the difference that obtains is updated to the gross mass of various materials.
Preferably, also comprise: the mixture density update module, being used to establish described very first time length is first computation period, instructs described mixture density computing module to calculate the interior mixture density of described first computation period, as first mixture density; If described very first time length is second computation period, instruct described mixture density computing module to calculate the interior mixture density of described second computation period, as second mixture density; First, second mixture density be multiply by first, second weighting coefficient respectively, again with the product addition, obtain and be updated to mixture density.
Compared with prior art, the present invention has the following advantages:
The present invention follows the tracks of the various material transport process of input, when described various mass transport to mixing container 17, begin to detect the volume of the compound of mixing container 17 outputs, the compound that makes output is that described various material is formed.It is mixture density that a certain constant relatively simply is set, or at one time, detect each the material gross mass of feed bin group 10 inputs and the mixture volume of mixing container 17 outputs simultaneously, the gross mass and the mixture volume of the various materials that the present invention is used to calculate are complementary, and the mixture density that calculates can accurately reflect the density of current compound.
Description of drawings
Fig. 1 is the agglomeration for iron mine system schematic;
Fig. 2 is unchanged mixing container pan feeding of material level and discharging process synoptic diagram;
Mixing container pan feeding and discharging process synoptic diagram that Fig. 3 changes for material level;
Fig. 4 is a mixture density renewal process process flow diagram;
Fig. 5 is the detection system synoptic diagram of first embodiment of the invention mixture density;
Fig. 6 is the detection system synoptic diagram of second embodiment of the invention mixture density;
Fig. 7 is the detection system synoptic diagram of third embodiment of the invention mixture density.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The present invention adds up the gross mass of the various materials of feed bin group 10 outputs in a period of time, follow the tracks of the course of conveying of various materials again, behind various material input mixing containers 17, be object with compound ore deposit groove 17 again, detect the mixture volume of mixing container 17 outputs in the identical time span, like this, by following the tracks of the course of conveying of the various materials of forming compound, quite good detecting goes out the quality of current compound in the mixing container 17, making the mixture quality and the volume of detection is same batch of compound, again with the mixture quality that detects divided by mixture volume, obtain the current density value of compound.Feed bin group 10 of the present invention is meant the batching feed bin group of raw material ore storage bin.
Certainly, the mixture density that the present invention is not only applicable to the steel sintering field calculates, also be applicable to the density calculation of the compound that mixes by multiple raw materials for production in other industrial processes, for example, the density calculation of cement admixture in the cement production process, the density calculation of compound etc. of fermenting in the antibiotics medicine production run.Be example with the agglomeration for iron mine system below, the detection method of mixture density of the present invention is described.
Referring to Fig. 2, burn two belts 16 compound sent into mixing container 17, mixing container 17 is transported to compound on the nine roller material distributing machine 18 again, by nine roller material distributing machine 18 with compound cloth on sintering pallet 19.By regulate burning the compound amount that two belts 16 carry and the cloth speed of nine roller material distributing machine 18, with regard to the feeding and the load of may command mixing container 17, allow the feeding of mixing container 17 and load about equally, keep the material level of mixing container 17 stable.Like this, only need the gross mass and the volume of exporting compound of the various materials of acquisition mixing container 17 current inputs, can calculate mixture density.The calculating formula is:
Desinity=Qquality/Vout; Formula 2
In the formula 2, desinity is a mixture density, and Qquality is the gross mass of the various materials of mixing container 17 current inputs, and Vout is the volume of mixing container 17 output compounds.The discharge port of the present invention's each ore deposit groove in ore deposit groove group 10 is provided with flow detection equipment, each ore deposit groove is transported to quality of material on the amalgamation belt 11 in the groove group 10 of the interior ore deposit of statistics very first time length, follow the tracks of the course of conveying of described various materials, when described various mass transport arrive mixing container 17, begin to detect the volume Vout of the compound of mixing container 17 outputs in the very first time length.Very first time length can be provided with according to actual conditions, and span is 1-120 minute.
Row cite an actual example mixture density detection method of the present invention are described, in detecting 5 minutes, the gross mass Qquality of various materials on the amalgamation belt 11 that 10 kinds of each hoppers of feed bin group are carried follows the tracks of the transport process of this batch materials, after 10 minutes, this batch materials is transported to mixing container 17, begin to detect the volume of mixing container 17 output compounds, detect mixing container 17 in identical time span 5 minutes, export the volume Vout of compound altogether, utilize formula 2, calculate the density value of compound.
The present invention follows the tracks of the various material transport process of input, when described various mass transport to mixing container 17, begin to detect the volume of the compound of mixing container 17 outputs, the compound that makes output is that described various material is formed.It is mixture density that a certain constant relatively simply is set, or at one time, detect each the material gross mass of feed bin group 10 inputs and the mixture volume of mixing container 17 outputs simultaneously, the gross mass and the mixture volume of the various materials that the present invention is used to calculate are complementary, and the mixture density that calculates can accurately reflect the density of current compound.
In actual application, the instantaneous detected value of flow detection equipment often has bigger fluctuation, can not accurately reflect the flow of material at that time.The present invention is provided with very first time length, detects the various material gross masses of hopper group conveying in the very first time length and the volume of mixing container 17 output compounds, and the error of avoiding the momentary fluctuation of flow detection equipment to cause improves accuracy of detection.
In material conveying process, if the input of new material is arranged, will inevitably influence the gross mass of material, the present invention detects the quality of this material, the quality of this material is added the gross mass of the various materials of initial statistics, as the gross mass of the various materials after upgrading.The formula that calculates is:
Qquality=(Qquality1+Qquality2+Qquality3......Qquality N)/Vout; Formula 3
In the formula 3, Qquality represents to obtain at last the gross mass of various materials, and Qquality1, Qquality2, Qquality3....QqualityN represent the quality of material that different phase adds respectively.
As shown in Figure 1, the material that silo group 10 is carried adds water treatment in primary mixer 12 and second drum mixer 14, add the gross mass that water will inevitably have influence on material.The present invention adopts tracking mode, when the various materials of feed bin group 10 conveyings are sent to primary mixer 12 and second drum mixer 14, detect the quality that primary mixer 12 and second drum mixer 14 add entry, the quality that will add entry adds the quality of the various materials of feeding bin group 10 conveyings, is updated to the gross mass of various materials.
For example, adding up each material gross mass that feed bin group 10 is carried in 3 minutes earlier is Qqualityl, after 2 minutes, this batch materials is transported to primary mixer 12, primary mixer 12 once adds water treatment, begin to detect the amount of water Qquality2 of primary mixer 12 in 3 minutes, Qquality1+Qquality2 is updated to the gross mass of various materials.Material after once adding water treatment continues to transmit, after 5 minutes, these mass transport are to second drum mixer 14, second drum mixer 14 carries out secondary to these materials and adds water treatment, begin to detect the amount of water Qquality 3 of second drum mixer 14 in 3 minutes, Qquality1+Qquality2+Qquality3 is updated to the gross mass of various materials.
The present invention is not the quality of the material of different time sections conveying that simply adds up, but by following the tracks of the transport process of first batch of material, in this batch materials transport process, if there is new material to add, detect this new material and in identical time span, add inventory, with initiate quality of material and the addition of former statistics material gross mass, as new various material gross masses.Because of the each several part of sintering system needs coordinated operation, the travelling speed of each several part is roughly the same, like this, add in the identical time span new material substantially all with first batch of mixing of materials together, with initiate quality of material and the various material gross mass addition of former statistics, as new various material gross masses, the various material gross masses after the renewal can reflect this batch materials real quality at that time.
In some sintering process, feeding in 17 a period of times of mixing container and load are also unequal, and at this moment certain variation will take place the material level of mixing container 17, or increases, or reduces.Referring to Fig. 3, the material level of mixing container 17 increases quality Δ l in a period of time, and this illustrates the not output fully of compound of input in this section period, and part remains in the mixing container 17.If this section period is detected the volume of mixing container 17 output compounds just, because of the gross mass of various materials of statistics has material level variation delta l to remain in the mixing container 17, the volume of the compound that detects not is the volume of the various materials of input, the gross mass of the various materials of the volume of compound of detection and statistics is not complementary, this just requires to deduct the material level variation delta l of this mixing container 17 in various compound gross masses, the formula of calculating is:
Desinity=(Qquality-Δ l)/Vout; Formula 4
For example, when various materials are imported mixing container 17, begin to detect the volume of the output compound of mixing container 17, finish to detecting, material level as this section mixing container 17 in the time increases by 5 tons, the gross mass of the various materials of statistics is 50 tons, shows and only export 50-5=45 ton compound, desinity=45/Vout in detection time.
For another example, when various materials are imported mixing container 17, begin to detect the volume of the output compound of mixing container 17, finish to detecting, material level as this section mixing container 17 in the time reduces 5 tons, the gross mass of the various materials of statistics is 50 tons, shows and export 50-(5)=55 ton compound, desinity=55/Vout in detection time.
In identical time span, the gross mass of the various materials of mixing container 17 inputs and the mixture quality of output are also inequality sometimes, the various materials of input partly remain in the mixing container 17, or former compound in many outputs mixing container 17, the gross mass of the various materials of the mixture volume of output and input is not complementary in the feasible identical time span that detects, and causes last result of calculation to have error.The utilization of the present invention level-sensing device of weighing detects the material level variation delta l of mixing container 17 in identical time span, in the various material gross masses of input mixing container 17, deduct the material level variation delta l of mixing container 17, the mass value that obtains is the mixture quality of output, this mass value is complementary with the mixture volume of the interior output of identical time span of detection, eliminate owing to, make result of calculation more accurate in this section error that the variation of mixing container 17 material levels causes in the time.
In actual application, because there is certain error in Equipment Inspection precision such as flow detection equipment, material checkout equipment, also can there be certain error in control to identical time span, makes the mixture density of last calculating have less error, and is accurate inadequately.The detection data that the present invention utilizes other approach to obtain are carried out verification to the mixture density that calculates, and have error if find the mixture density that calculates, and can adopt update the system that the mixture density that calculates is revised, and calculate formula and are:
Mixture density=K (Qquality-Δ l)/Vout; Formula 5
In the formula 5, K is first correction factor, and the span of K is 0.9-1.1, by update the system the mixture density that calculates is revised, and can further improve the computational accuracy of mixture density.
The present invention can adopt the method to flow variable and time 2 integrations of material, and minute to be that step-length is carried out integral and calculating, can eliminate the detection error that flow detection equipment precision problem causes like this when the gross mass of the various materials of statistics.To the input quality of certain material, the calculating formula is:
Qquality_1=∫ ∫ dWindt formula 6
In the formula 6, Win is the flow variable of this material, and Qquality_1 is this kind material input quality in the time span of statistics.Same because the precision problem of flow detection equipment, control problem with identical time span, can there be less error in the quality of material that detects, the data that the present invention can utilize other approach to obtain are carried out verification to detected quality of material, there is error if find the quality of material that detects, adopt update the system that the quality of material that detects is revised, the calculating formula is:
Qquality_1=∫ ∫ adWindt formula 7
In the formula 7, a is second correction factor, and the span of a is 0.9-1.1, by update the system the quality of material that detects is revised, and can further improve the accuracy of detection of quality of material.
Feed bin group 10 of the present invention is in discharge process, and each feed bin in the feed bin group 10 is word order often, and feed bin group 10 belows are from the proal amalgamation belt 11 in back.Therefore, the present invention adopts the gross mass of following the tracks of the various materials of feed bin group 10 outputs in the statistical statistics very first time length, the gross mass of the various materials of exporting in very first time length with each feed bin of tracking amalgamation belt 11 mode of transport statistics.For example, feed bin group 10 comprises the feed bin a of word order, feed bin b, feed bin c and feed bin d, amalgamation belt 11 moves to feed bin a from feed bin d, 9:30:00 begins, calculate the quality of feed bin d to amalgamation belt 11 convey materials D, after 5 seconds, by the material D of calculated mass by amalgamation belt 11 be transported to feed bin c under, receive the material C that feed bin c carries, from 9:30:05, calculate the quality of feed bin c to amalgamation belt 11 convey materials C, and the like, begin to calculate the quality of feed bin b from 9:30:10 respectively, begin to calculate the quality of feed bin a to amalgamation belt 11 convey materials A from 9:30:15 to amalgamation belt 11 convey materials B.Like this,, add up the material that each feed bin is carried in different time sections feed bin group 10, can further improve the computational accuracy of material gross mass by following the tracks of the transmission of material on the amalgamation belt 11.
The compound of mixing container 17 outputs all is laid on the sintering pallet 19, and the mixture volume that calculates mixing container 17 outputs can adopt following dual mode:
First kind, at the compound delivery outlet of mixing container 17 flow detection equipment is set, detect the fluctuations in discharge of mixing container 17, adopt formula 6 or formula 7 to calculate the mixture volume of output again.
Second kind, speed detection equipment and material thickness checkout equipment are set on sintering pallet 19, detect the travelling speed of sintering pallet 19 and the material thickness of laying, utilize following formula to calculate again:
Vout=∫ ∫ ∫ sp_Widthdsp_speedd (ch-ch0) dt formula 8
In the formula 8, Vout is the volume of mixing container 17 output compounds, and sp_width is the width of sintering pallet 19, and sp_speed is the running speed of sintering pallet 19, CH is the bed thickness of compound on the sintering pallet 19, and CH0 is the thickness of grate-layer material on the sintering pallet 19.By variable sp_speed, (CH-CH0) and time are carried out integration 3 times, multiplication by constants sp_width again, and minute being that step-length is carried out integral and calculating, the detection error that speed detection equipment and material thickness checkout equipment precision problem cause can be eliminated like this, the mixture volume of accumulative total output in this section period can be more accurately calculated.
In some material transportation, because of the various material's proportion of importing in the different time sections change greatly, various materials may cause the loss of material to differ because of the work of whole transportation system is inharmonious in course of conveying, the mixture density that the adjacent time period is calculated has than great fluctuation process, is unfavorable for the calculating of follow-up sintering flow.Select time length of the present invention has two periods than big difference, calculate the mixture density value of these two sections time correspondences respectively, two mixture density values multiply by addition behind the weighting coefficient more respectively, that obtain and be updated to mixture density, have than great fluctuation process with the mixture density of avoiding different time sections to calculate, concrete formula is:
Desinity=D1*PB1+D2*PB2 formula 9
In the formula 9, D1 is first computation period, and the D1 span can be 30-120 minute; D2 is second computation period, and the D1 span can be 5-15 minute, and PB1 and PB2 are the weighting coefficient less than 1, and the concrete value of PB1 and PB2 can be adjusted according to result of calculation.Preferably, PB1+PB2=1, like this, formula 9 deformables are:
Desinity=D1*PB1+D2* (1-PB1) formula 10
The present invention calculates the mixture density of longer a period of time correspondence and the mixture density of shorter a period of time correspondence, multiply by respectively again addition behind the weighting coefficient and be updated to mixture density, this account form is taken all factors into consideration the situation of change of various materials in longer a period of time and the situation of change of interior various materials of shorter a period of time, simultaneously, value size by weighting coefficient values is controlled the influence degree of two kinds of different situations to mixture density, makes the mixture density that obtains at last can objectively respond current mixture density.
Real-time for the mixture density value that guarantees to obtain at last, the present invention sets the update cycle, the all interior mixture density value of upgrading of per update cycle, it is 60 minutes now with first computation period, second computation period is 10 minutes, update cycle be 1 minute for example, introduce this renewal process, concrete steps are referring to Fig. 4.
Whether step S401, judgement time reach 1 minute at interval, as reach 1 minute, forward step S402 to, as not reaching 1 minute, continue to wait for.
Step S402, the gross mass and the mixture volume of each material that utilized detect in nearest 60 minutes calculate mixture density D1, and the gross mass and the mixture volume of each material that utilized detect in nearest 10 minutes calculate mixture density D2.
Step S403, utilize formula desinity=D1*PB1+D2* (1-PB1), calculate current mixture density value.
The present invention is at each update cycle every renewal mixed once material density value, the mixture density that at every turn obtains all has and does not have too big fluctuation, promptly guarantee the real-time of the mixture density of acquisition, can objectively respond the situation of change of mixture density again, make things convenient for and use this mixture density value in the subsequent calculations.
Based on the detection method of above-mentioned mixture density, the present invention also discloses a kind of detection system of mixture density.Introduce three embodiment of this detection system below respectively by Fig. 5, Fig. 6, Fig. 7.See Fig. 5, this detection system comprises feed bin group 10, mixing container 17, quality of material detection module 51, material tracking module 52, mixture volume detection module 53, reaches mixture density computing module 54.
The gross mass of the various materials of 1 feed bin group, 10 outputs in the quality of material detection module 51 statistics very first time length is sent to mixture density computing module 54 with the gross mass value of various materials.Material tracking module 52 is followed the tracks of the course of conveying of described various materials, when described various mass transport arrive mixing container 17, starts mixture volume detection module 53.
Mixture volume detection module 53 detects the volume of the compound of mixing container 17 outputs in the described very first time length, and the bulking value of compound is sent to mixture density computing module 54.Divided by mixture volume, the merchant who obtains is as mixture density with various material gross masses for mixture density computing module 54.
See Fig. 6, this detection system comprises feed bin group 10, mixing container 17, quality of material detection module 51, material tracking module 52, mixture volume detection module 53, mixture density computing module 54, quality of material update module 55, reaches material level detection module 56.
Quality of material update module 55 is in various material conveying process, if any new material input, the quality of new material is imported in detection in very first time length, with the gross mass of described various materials and the quality addition of described new material, that obtain and be updated to the gross mass value of various materials, with upgrade the various materials in back the gross mass value be sent to mixture density computing module 54, mixture density computing module 54 upgrades the gross mass value of various materials.
Material level detection module 56 detects the material level variable quantity of mixing container 17 in described very first time length, described material level variable quantity is sent to described quality of material update module 55, quality of material update module 55 is subtracted each other the gross mass and the material level variable quantity of various materials, the difference that obtains is updated to the gross mass of various materials, with upgrade the various materials in back the gross mass value be sent to mixture density computing module 54, mixture density computing module 54 upgrades the gross mass value of various materials.
See Fig. 7, this detection system comprises feed bin group 10, mixing container 17, quality of material detection module 51, material tracking module 52, mixture volume detection module 53, mixture density computing module 54, quality of material update module 55, material level detection module 56, reaches mixture density update module 57.
It is first computation period that mixture density update module 57 is established described very first time length, the mixture density that instruction mixture density computing module 54 calculates in described first computation period, as first mixture density, be sent to mixture density update module 57 and preserve.If described very first time length is second computation period, the mixture density that instruction mixture density computing module 54 calculates in described second computation period as second mixture density, is sent to mixture density update module 57 and preserves; Mixture density update module 57 multiply by first, second weighting coefficient respectively with first, second mixture density, again with the product addition, obtain and be updated to mixture density.
More than to the detection method and the detection system of a kind of mixture density provided by the present invention, be described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1, a kind of detection method of mixture density is characterized in that, comprising:
The gross mass of the various materials of feed bin group output in the statistics very first time length;
Follow the tracks of the course of conveying of described various materials,, begin to detect the volume of the compound of described mixing container output in the described very first time length when described various mass transport arrive mixing container;
Divided by mixture volume, the merchant who obtains is as mixture density with various material gross masses.
2, detection method as claimed in claim 1, it is characterized in that, in various material conveying process, if any new material input, the quality of new material is imported in detection in very first time length, with the gross mass of described various materials and the quality addition of described new material, the gross mass that obtains and be updated to various materials.
3, detection method as claimed in claim 1 is characterized in that, the volume of the compound of described mixing container output also comprises simultaneously in detecting described very first time length:
The material level variable quantity of detection described mixing container in described very first time length;
The gross mass and the described material level variable quantity of described various materials are subtracted each other the gross mass that obtains and be updated to various materials.
4, detection method as claimed in claim 1 is characterized in that, also comprises:
Described mixture density be multiply by first correction factor, and the product that obtains is updated to mixture density.
5, detection method as claimed in claim 1 is characterized in that, respectively the flow variable and the time of various materials is carried out integration 2 times, calculates the quality that this material is imported in described very first time length;
With the integral result addition, obtain and as the gross mass of various materials.
6, detection method as claimed in claim 5 is characterized in that, the gross mass of described various materials be multiply by second correction factor, and the product that obtains is updated to the gross mass of various materials.
7, detection method as claimed in claim 1, it is characterized in that, respectively travelling speed variable, compound thickness variable and the time of sintering pallet are carried out integration 3 times, obtain the integral result in the described very first time length, integral result be multiply by the sintering pallet width, the numerical value that obtains is as the volume of compound again.
8, as each described detection method of claim 1 to 7, it is characterized in that, also comprise:
If described very first time length is first computation period, the mixture density that calculates is as first mixture density; If described very first time length is second computation period, the mixture density that calculates is as second mixture density;
First, second mixture density be multiply by first, second weighting coefficient respectively, again with the product addition, obtain and be updated to mixture density.
9, detection method as claimed in claim 8 is characterized in that, described first, second weighting coefficient and be 1.
10, detection method as claimed in claim 8 is characterized in that, also comprises:
Whether judgement time surpasses the default update cycle at interval, as surpassing the update cycle, upgrades mixture density.
11, a kind of detection system of mixture density comprises feed bin group and mixing container, it is characterized in that, also comprises quality of material detection module, material tracking module, mixture volume detection module, reaches the mixture density computing module:
Described quality of material detection module, the gross mass that is used to add up the various materials of described feed bin group output in the very first time length;
Described material tracking module is used to follow the tracks of the course of conveying of described various materials, when described various mass transport to described mixing container, start described mixture volume detection module;
Described mixture volume detection module is used to detect the volume of the compound of described mixing container output in the described very first time length;
Described mixture density computing module is used for various material gross masses divided by mixture volume, and the merchant who obtains is as mixture density.
12, detection system as claimed in claim 11 is characterized in that, also comprises:
The quality of material update module, be used at various material conveying process,, detect the quality of the new material of input in very first time length if any new material input, with the gross mass of described various materials and the quality addition of described new material, the gross mass that obtains and be updated to various materials.
13, detection system as claimed in claim 11 is characterized in that, also comprises:
The material level detection module is used to detect the material level variable quantity of described mixing container in described very first time length, and described material level variable quantity is sent to described quality of material update module;
Described quality of material update module is subtracted each other the gross mass and the described material level variable quantity of described various materials, and the difference that obtains is updated to the gross mass of various materials.
14, as claim 11,12 or 13 described detection systems, it is characterized in that, also comprise:
The mixture density update module, being used to establish described very first time length is first computation period, instructs described mixture density computing module to calculate the interior mixture density of described first computation period, as first mixture density; If described very first time length is second computation period, instruct described mixture density computing module to calculate the interior mixture density of described second computation period, as second mixture density; First, second mixture density be multiply by first, second weighting coefficient respectively, again with the product addition, obtain and be updated to mixture density.
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| CN101560599B (en) * | 2009-04-17 | 2011-07-20 | 中冶长天国际工程有限责任公司 | Thickness control method and control system of mixed material layer |
| CN102494732A (en) * | 2011-12-06 | 2012-06-13 | 中冶长天国际工程有限责任公司 | Silo material level balance deviation detection method and system |
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| CN101560599B (en) * | 2009-04-17 | 2011-07-20 | 中冶长天国际工程有限责任公司 | Thickness control method and control system of mixed material layer |
| CN102494732A (en) * | 2011-12-06 | 2012-06-13 | 中冶长天国际工程有限责任公司 | Silo material level balance deviation detection method and system |
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| CN108693072A (en) * | 2017-04-12 | 2018-10-23 | 山东钢铁股份有限公司 | Material kind discrimination method and device |
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| CN110040529A (en) * | 2019-04-18 | 2019-07-23 | 首钢京唐钢铁联合有限责任公司 | A kind of buffering chamber material position regulating system and method |
| CN113295000A (en) * | 2020-08-20 | 2021-08-24 | 中冶长天国际工程有限责任公司 | Material distribution control system and method based on material layer thickness prediction |
| CN113295000B (en) * | 2020-08-20 | 2022-04-12 | 中冶长天国际工程有限责任公司 | Material distribution control system and method based on material layer thickness prediction |
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