CN103706481B - The acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio and system - Google Patents
The acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio and system Download PDFInfo
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- CN103706481B CN103706481B CN201310730814.6A CN201310730814A CN103706481B CN 103706481 B CN103706481 B CN 103706481B CN 201310730814 A CN201310730814 A CN 201310730814A CN 103706481 B CN103706481 B CN 103706481B
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Abstract
The acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio disclosed by the invention, comprise the following steps: detect the first ash-storing bin dust and be settled down to the first sedimentation time of high charge level by hole capital after selling all securities and the second ash-storing bin dust is settled down to the second sedimentation time of high charge level by hole capital after selling all securities, described first ash-storing bin is arranged in the first electric field of described many electric-field dust collectors, and described second ash-storing bin is arranged in a rear potential electrical field of described first electric field; Obtain the target dedusting ratio of described rear potential electrical field and described first electric field.The invention also discloses a kind of acquisition system of sintering system many electric-field dust collectors electric field dedusting ratio.The target dedusting that said method and system obtain unloads the ash time than the fixed rear potential electrical field compared to dependence experience in background technology or Default Value, more can improve according to target dedusting than determining that electric field unloads the accuracy of ash time, and then more adequately can instruct the ash that unloads of many electric-field dust collectors.
Description
Technical field
The present invention relates to sintering system dedusting technology field, more specifically, relate to a kind of acquisition methods and system of sintering system many electric-field dust collectors electric field dedusting ratio.
Background technology
The dusty gas produced in SINTERING PRODUCTION needs just can enter air after electric cleaner process, and therefore electric cleaner is environmental protection equipment important in SINTERING PRODUCTION.Electric cleaner in sintering system is generally many electric-field dust collectors, namely has many electric fields (such as three electric fields or four electric fields) structure.
The applying date is 2012.12.5, Authorization Notice No. is the utility model patent of CN202968583U, disclose the dust arrester that a kind of automatic control exports ash, please refer to Fig. 1-2, three electric-field dust collectors comprise an electric field 02, No. two electric fields 03 and No. three electric fields 04 of being communicated with successively, dusty gas is discharged section 01 by the dusty gas of Dustproof air flue and is entered into an electric field 02, discharges successively by discharging section 08 through the purifying smoke of Dustproof air flue after an electric field 02, No. two electric fields 03 and the dedusting of No. three electric fields 04.In the process of dedusting, collect in the dust that electric field 02 produces ash-storing bin 021 thereunder, then discharged by unloading valve 022; Collect in the dust that No. two electric fields 03 produce ash-storing bin 031 thereunder, then discharged by unloading valve 032; Collect in the dust that No. three electric fields 04 produce ash-storing bin 041 thereunder, then discharged by unloading valve 042.Each electric field is provided with multiple ash-storing bin under normal circumstances, the dust that multiple ash-storing bins of each electric field are discharged is transported by the scrapper conveyor 06 be positioned at below each electric field, scrapper conveyor 06 below each electric field is by dust emission on transporting equipment 05, and dust is finally discharged by transporting equipment 05.
The dust quantity that removes of each electric field of above-mentioned many electric-field dust collectors has bigger difference.Wherein: electric field 02 removes the dust of about 90%, and No. two electric fields 03 remove the dust of 90% in residue 10% dust, i.e. the dust of about 9%, and No. three electric fields 04 remove about 90% dust in residue 1% dust.When an electric field 02 is for buying securities with all one's capital, many electric-field dust collectors start to unload ash, and now No. two electric fields 03 and No. three electric fields 04 do not accumulate too many ash.Such as, ash must be unloaded when electric field 02 ash-storing bin is bought securities with all one's capital for 8 hours, and now, the ash-storing bin 031 of No. two electric fields 03 just runs up to the dust of 10% volume, if the ash-storing bin 031 of No. two electric fields 03 is bought securities with all one's capital need 80 hours (volume of each ash-storing bin of many electric-field dust collectors is identical).
But unload in grey process in reality, each ash-storing bin unloading each electric field in the ash cycle all can carry out unloading ash.Unload in the ash cycle due to each, the Dust Capacity of the ash-storing bin accumulation of the rear potential electrical field of electric fields 02 such as No. two electric fields 03 and No. three electric fields 04 is less, so the unloading valve of the rear potential electrical fields such as No. two electric fields 03, No. three electric fields 04 unloads grey time devided modulation, usually empirically or many electric-field dust collectors Default Value setting.
In the production of reality, the change of the factors such as SINTERING PRODUCTION operating mode, electric field health status, material condition, all can affect the dust removing effects of each electric field of many electric-field dust collectors, thus it is inaccurate to cause unloading grey sequential.For sintering system, many electric-field dust collectors can not unload ash exactly and dust pelletizing system air leak rate of air curtain will be caused to increase, and then can affect dust removing effects, increase dedusting fan power consumption.Obviously, empirically or the ash time of unloading of the subsequent electric field of Default Value setting cannot adapt to actual production, and then cannot carry out unloading ash according to the production of reality.
Summary of the invention
The object of this invention is to provide a kind of acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio, to solve in background technology dependence experience or Default Value, fixed subsequent electric field unloads the ash time, cannot produce the problem instructing more exactly and unload ash according to actual sintered.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio, comprises the following steps:
Detect the first ash-storing bin dust and be settled down to the first sedimentation time of high charge level by hole capital after selling all securities and the second ash-storing bin dust is settled down to the second sedimentation time of high charge level by hole capital after selling all securities, described first ash-storing bin is arranged in the first electric field of described many electric-field dust collectors, and described second ash-storing bin is arranged in a rear potential electrical field of described first electric field;
Obtain the target dedusting ratio of described rear potential electrical field and described first electric field.
Preferably, in above-mentioned acquisition methods, also comprise:
Judge whether to meet pre-conditioned, described pre-conditioned comprising reaches default sense cycle apart from target dedusting last time than the time detected; Or the proportions of sintering raw materials change of described sintering system; Or power on after described many electric-field dust collectors power-off;
When meet described pre-conditioned time, detect described first sedimentation time and described second sedimentation time.
Preferably, in above-mentioned acquisition methods, obtain described rear potential electrical field and the target dedusting ratio of described first electric field, comprising:
According to k
1=t
1/ t
2calculate described target dedusting ratio, wherein k
1for target dedusting ratio, t
1be the first sedimentation time, t
2it was the second sedimentation time.
Preferably, in above-mentioned acquisition methods, obtain described rear potential electrical field and the target dedusting ratio of described first electric field, comprising:
According to k
4=t
1/ t
2calculate the reference dedusting ratio of described rear potential electrical field and described first electric field;
Obtain the history dedusting ratio of described rear potential electrical field and described first electric field;
Utilize k=k
4/ 2+k
5/ 2 calculate described target dedusting ratio, wherein, and k
4for reference dedusting ratio, k
5be history dedusting ratio, k is target dedusting ratio, t
1be the first sedimentation time, t
2it was the second sedimentation time.
Preferably, in above-mentioned acquisition methods, detect described second ash-storing bin dust is settled down to high charge level the second sedimentation time by hole capital after selling all securities, comprising:
Detect described second ash-storing bin dust is settled down to low material level the 3rd sedimentation time by hole capital after selling all securities;
The dust inquired about in described second ash-storing bin falls the dust volume ratio that low material level and dust fall high charge level;
Utilize t
2=t
3/ k
3calculate described second sedimentation time, wherein t
3be the 3rd sedimentation time, k
3for dust volume ratio, t
2it was the second sedimentation time.
Preferably, in above-mentioned acquisition methods, detect dust in described first ash-storing bin and be settled down to the first sedimentation time of high charge level by hole capital after selling all securities, comprising:
Detect dust in described first ash-storing bin and start to be settled down to the first actuation time of the high charge level switch motion experience of described first ash-storing bin from hole capital after selling all securities;
Judge whether described first actuation time is less than or equal to the first setting value;
When being less than or equal to the first setting value described first actuation time, using described first actuation time as the first sedimentation time.
Preferably, in above-mentioned acquisition methods, detect dust in described second ash-storing bin and be settled down to the second sedimentation time of high charge level by hole capital after selling all securities, comprising:
Detect dust in described second ash-storing bin and start to be settled down to the second actuation time of the high charge level switch motion experience of the second ash-storing bin from hole capital after selling all securities;
Judge whether described second actuation time is less than or equal to the second setting value;
When being less than or equal to the second setting value described second actuation time, using described second actuation time as the second sedimentation time.
Based on the acquisition methods of the above-mentioned sintering system many electric-field dust collectors electric field dedusting ratio provided, present invention also offers the acquisition system of the many electric-field dust collectors of a kind of sintering system many electric fields dedusting ratio, comprising:
First detecting unit, to be settled down to the first sedimentation time of high charge level by hole capital after selling all securities for detecting the first ash-storing bin dust, described first ash-storing bin is arranged in the first electric field of described many electric-field dust collectors;
Second detecting unit, to be settled down to the second sedimentation time of high charge level by hole capital after selling all securities for detecting the second ash-storing bin dust, described second ash-storing bin is arranged in potential electrical field after of described first electric field;
Acquiring unit, for obtaining the target dedusting ratio of described rear potential electrical field and described first electric field.
Preferably, in above-mentioned acquisition system, described acquiring unit comprises:
First computation subunit, for according to k
1=t
1/ t
2calculate described target dedusting ratio, wherein, k
1for target dedusting ratio, t
1be the first sedimentation time, t
2it was the second sedimentation time.
Preferably, in above-mentioned acquisition system, described acquiring unit comprises:
Second computation subunit, for according to k
4=t
1/ t
2calculate the reference dedusting ratio of described rear potential electrical field and described first electric field;
Obtain subelement, obtain described rear potential electrical field and described first electric field history dedusting ratio;
3rd computation subunit, utilizes k=k
4/ 2+k
5/ 2 calculate described target dedusting ratio, wherein, and k
4for reference dedusting ratio, k
5be history dedusting ratio, k is target dedusting ratio, t
1be the first sedimentation time, t
2it was the second sedimentation time.
The acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio provided by the invention, has following beneficial effect:
The dedusting of sintering system many electric-field dust collectors electric field can change than the impact by factors such as SINTERING PRODUCTION operating mode, electric field health status, material conditions, and above-mentioned influence factor finally can be reflected in the dust settling process of each electric field, the acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio provided by the invention, by detecting the first sedimentation time and the second sedimentation time, determine one of the first electric field rear potential electrical field and the target dedusting ratio of the first electric field, namely realize the condition of production determination target dedusting ratio according to reality.Relative to background technology dependence experience or Default Value for fixed dedusting ratio, more can be applicable to the actual condition of production, and then can improve according to target dedusting than determining that electric field unloads the accuracy of ash time, finally can instruct more accurately the ash work of unloading of many electric-field dust collectors.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of three electric-field dust collectors;
Fig. 2 is the side view of an electric field in three electric-field dust collectors;
Fig. 3 is the flow chart of sintering system many electric-field dust collectors electric field dedusting of providing of the embodiment of the present invention one than acquisition methods;
Fig. 4 is the flow chart of sintering system many electric-field dust collectors electric field dedusting of providing of the embodiment of the present invention two than acquisition methods;
Fig. 5 is the flow chart of sintering system many electric-field dust collectors electric field dedusting of providing of the embodiment of the present invention three than acquisition methods;
Fig. 6 is the flow chart of sintering system many electric-field dust collectors electric field dedusting of providing of the embodiment of the present invention four than acquisition methods;
Fig. 7 is the structural representation of sintering system many electric-field dust collectors electric field dedusting of providing of the embodiment of the present invention five than acquisition system.
Detailed description of the invention
Embodiments provide a kind of acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio, to solve in background technology dependence experience or Default Value and fixed rear potential electrical field unloads the ash time, cannot produce according to actual sintered the problem instructing more exactly and unload ash.
Technical scheme in the embodiment of the present invention is understood better in order to make those skilled in the art person, and enable the above-mentioned purpose of the embodiment of the present invention, feature and advantage become apparent more, below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is described in further detail.
It should be noted that, the dedusting of many electric-field dust collectors electric field than the ratio referring to two different electric field institute gumming dust quantitys of many electric-field dust collectors in the unit interval, dimensionless.
With equation expression: K=Q1/Q2, wherein: K is dedusting ratio, dimensionless, Q1 be electric field 1 within the unit interval except dust quantity, unit is: Kg/min; Q2 be electric field 2 within the unit interval except dust quantity, unit is: Kg/min.The present invention detects dedusting ratio by indirect mode, namely obtains dedusting ratio by ash-storing bin (ash-storing bin volume the is consistent) dust settling of contrast two not same electric field to the different time of high charge level.Dedusting is than describing the different efficiency of dust collection difference of each electric field of electric precipitation, and the ash time of unloading that may be used for instructing each electric field of electric precipitation different distributes more accurately.
Dedusting, than the health status that electric field also can be described, if electric field dedusting is than substantial deviation, illustrates that electric precipitation electric field health status has problem, and electric field can be provided to overhaul early warning information.
Embodiment one
Please refer to accompanying drawing 3, Fig. 3 and show sintering system many electric-field dust collectors electric field dedusting that the embodiment of the present invention one provides flow process than acquisition methods.
Flow process shown in Fig. 3, comprising:
S101, judge whether to meet pre-conditioned.
Under normal circumstances, due to the change of the factors such as SINTERING PRODUCTION operating mode, electric field health status, material condition, the dust removing effects of many each electric fields of electric-field dust collector can be affected, namely affect a rear potential electrical field of the first electric field and the target dedusting ratio of the first electric field.Now, empirically or Default Value setting subsequent electric field unload ash the time cannot adapt to actual production.So before acquisition target dedusting ratio, need pre-conditionedly to judge, to instruct subsequent operation some.The pre-conditioned proportions of sintering raw materials change that can comprise sintering system, or power on after described many electric-field dust collectors power-off (such as sintering machine overhaul, in repair, transform after again to put into production etc. need the situation of electrifying startup after power-off).In order to ensure above-mentioned target dedusting than adapting to actual production change better, also can obtain according to default sense cycle, also can comprise so pre-conditioned and reach default sense cycle apart from target dedusting last time than the time detected.Certainly, the above-mentioned pre-conditioned factor that can also affect target dedusting ratio for other, this does not repeat.
Step S101 judges pre-conditioned, to determine whether subsequent detection carries out, (such as reaches default sense cycle apart from target dedusting last time than the time detected), then enter step S102 when meeting pre-conditioned, otherwise, enter step S106.
S102, detect dust in the first ash-storing bin and be settled down to the first sedimentation time of high charge level by hole capital after selling all securities.
In step S102, the first ash-storing bin is arranged in the first electric field of many electric-field dust collectors.
S103, detect dust in the second ash-storing bin and be settled down to the second sedimentation time of high charge level by hole capital after selling all securities.
In step S103, the second ash-storing bin is arranged in a rear potential electrical field of the first electric field, can be a certain rear potential electrical field such as the second electric field of many electric-field dust collectors, the 3rd electric field.In the present embodiment one, the sequencing of step S102 and step S103 can be put upside down, and can certainly carry out simultaneously.
It should be noted that, in the specific embodiment of the invention, rear potential electrical field refers to the subsequent electric field of the first electric field, and the dedusting priority level of rear potential electrical field is lower than the first electric field, and rear potential electrical field can be the second electric field, the 3rd electric field etc.Many electric-field dust collectors in the embodiment of the present invention can be arranged on the sintering machine head end of sintering system, also can be arranged on other position of sintering system, as long as can carry out the part of dust removal process to the exhaust of sintering system.
In the operating process of reality, because each ash-storing bin of sintering system many electric-field dust collectors electric field carries out unloading ash manipulation according to fixed grey sequential of unloading, above-mentioned steps S102 and step S103 is in concrete implementation process, first ash-storing bin and the second ash-storing bin are an optional ash-storing bin in corresponding electric field, and in the process detected, grey sequential is unloaded in the first ash-storing bin and the disengaging of the second ash-storing bin.After detection completes, the first ash-storing bin and the recurrence of the second ash-storing bin are unloaded grey sequential and are normally unloaded ash.
Commonly unload in grey process, the dust of ash-storing bin should remain under high charge level, on low material level, this is because during the high charge level of the dust in many electric-field dust collectors ash-storing bin higher than ash-storing bin, may occur that dust floods the fault of electric field, cause electric field cisco unity malfunction.When the dust in many electric-field dust collectors ash-storing bin is lower than low material level, the air leak rate of air curtain of many electric-field dust collectors can be caused to increase, thus affect the SINTERING PRODUCTION of whole sintering system.In order to the control to dust charge level in ash-storing bin, high charge level switch and low stuff level switch is provided with in each ash-storing bin of each electric field of many electric-field dust collectors, on both high charge levels of being separately positioned on ash-storing bin and low material level, the signal sent by high charge level switch and low stuff level switch is to determine the sedimentation degree of dust.After the dust in ash-storing bin is drained, the signal of low stuff level switch is true, and the signal of high charge level switch is false, and when dust settling reaches high charge level, the signal of high charge level switch is true, high charge level switch motion.The time that step S102 can be settled down to high charge level switch motion experience by dust in timer record first ash-storing bin from hole capital after selling all securities was the first sedimentation time, and the time that step S103 can be settled down to high charge level switch motion experience by dust in timer record second ash-storing bin from hole capital after selling all securities was the second sedimentation time.
Except adopting the timing means of timing stuff level switch action, step S102 and step S103 can also adopt other sensor to detect the first sedimentation time and the second sedimentation time.
S104, obtain after the target dedusting ratio of potential electrical field and the first electric field.
In step S104, result that formula (1) calculates can be passed through directly as target dedusting ratio, the target dedusting ratio of potential electrical field and the first electric field namely.
k
1=t
1/t
2（1）
In above-mentioned formula (1), t
1the first sedimentation time, t
2the second sedimentation time, k
1be rear potential electrical field and the target dedusting ratio of the first electric field, namely, potential electrical field removes the ratio of dust quantity except dust quantity and the first electric field unit interval.
Certainly, in the testing process of reality, now can there is target dedusting than detecting inaccurate problem in such as proportions of sintering raw materials continued jitters within long period of time, in order to solve the problem, step S104 can also calculate target dedusting ratio by following steps.
A1, calculate after the reference dedusting ratio of potential electrical field and the first electric field.
By formula (2) computing reference dedusting ratio.
k
4=t
1/t
2（2）
In above-mentioned formula (2), t
1the first sedimentation time, t
2it was the second sedimentation time; k
4it is rear potential electrical field and the reference dedusting ratio of the first electric field.
A2, obtain after the history dedusting ratio of potential electrical field and the first electric field.
Under normal circumstances, on retaining in the process of dedusting, target dedusting is once than record for many electric-field dust collectors, i.e. history dedusting ratio, can be inquired about from equipment data by the mode of inquiry.
A3, calculating target dedusting ratio.
Target dedusting ratio is calculated by formula (3).
k=k
4/2+k
5/2（3）
In above-mentioned formula (3), k
4for reference dedusting ratio, k
5be history dedusting ratio, k is target dedusting ratio.
By calculating history dedusting ratio and asking for target dedusting ratio with reference to dedusting than the mode of average, the inaccurate problem of target dedusting ratio acquisition that the factor Long-term Fluctuations such as proportions of sintering raw materials cause can be reduced.
S105, upgrade after the current dedusting ratio of potential electrical field and the first electric field.
The target dedusting that step S105 utilizes step S104 to obtain is than upgrading the current dedusting ratio of rear potential electrical field with the first electric field.
S106, end operation.
If pre-conditioned resentful in step S101, can not subsequent operation be carried out, namely terminate whole acquisition operation.
The acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio that the embodiment of the present invention one provides, by detect the first electric field and the first electric field one after dust settling time of potential electrical field, acquisition can reflect the first sedimentation time and second sedimentation time of dust settling situation, then by the target dedusting ratio of potential electrical field after the first sedimentation time and the acquisition of the second sedimentation time with the first electric field.This acquisition methods can according to the actual dust settling situation determination target dedusting ratio of sintering system, and then determine more accurately rear potential electrical field unload ash the time, compared to dependence experience in background technology or Default Value, fixed rear potential electrical field unloads the ash time, more can improve according to target dedusting than determining that electric field unloads the accuracy of ash time, and then more adequately can instruct the ash that unloads of many electric-field dust collectors.
Embodiment two
As described in background, the rear potential electrical field of the first electric field except dust quantity smaller, and the volume of each ash-storing bin of many electric-field dust collectors is identical, so the second sedimentation time longer (such as 80 hours) that the second ash-storing bin dust being arranged in rear potential electrical field is settled down to high charge level by hole capital after selling all securities, this time that detection second sedimentation time can be made used is longer, not only detection efficiency is low, but also can affect rear potential electrical field normally unload ash.
In order to head it off, please refer to Fig. 4, Fig. 4 shows sintering system many electric-field dust collectors electric field dedusting that the embodiment of the present invention two provides flow process than acquisition methods.
Flow process shown in Fig. 4, comprising:
S203, detect the second ash-storing bin dust is settled down to low material level the 3rd sedimentation time by hole capital after selling all securities.
Can realize based on the stuff level switch described in embodiment one equally in step S203, namely can be settled down to the time of low stuff level switch action experience as the 3rd sedimentation time by dust in timer record second ash-storing bin from hole capital after selling all securities, certain 3rd sedimentation time can also be detected by another way.
S204, inquire about the dust volume ratio of the low material level of the second ash-storing bin dust corresponding to high charge level.
In this step, inquire about the volume ratio of the corresponding dust of the low material level of the second ash-storing bin and high charge level, refer to volume V during the low material level of dust settling to the second ash-storing bin
1with dust deposit to volume V during the second ash-storing bin high charge level
2ratio k
3=V
1/ V
2.In the present embodiment, the volume of each ash-storing bin of many electric-field dust collectors is all equal, and the low material level of each ash-storing bin is identical with high charge level, and concrete above-mentioned dust volume ratio can be learnt from equipment data inquiry, can certainly be drawn by measurement.
S205, calculated for the second sedimentation time.
Can calculate for the second sedimentation time according to formula (4) in step S205.
t
2=t
3/k
3（4）
In above-mentioned formula (4), t
3be the 3rd sedimentation time, k
3for dust volume ratio, t
2it was the second sedimentation time.
The embodiment of the present invention two is settled down to the low material level of the second ash-storing bin the 3rd sedimentation time used by detecting dust from hole capital after selling all securities, indirectly calculates for the second sedimentation time.The time being settled down to the low material level of ash-storing bin used from hole capital after selling all securities due to dust is shorter, so can shorten the detection time of the second sedimentation time.This can not only improve detection efficiency, but also can reduce the impact of rear position normal electric field being unloaded to ash.
It should be noted that, in Fig. 4 step S201, S202, S206, S207 and S208 respectively with the step S101 in Fig. 3, S102, S104, S105 and S106 one_to_one corresponding, and content is identical, specifically please refer to the description of appropriate section in embodiment one, this does not repeat.
Embodiment three
Describe known from embodiment one, first sedimentation time can be checked by stuff level switch, in the course of work of reality, because stuff level switch is consumable accessory, be easy to damage, but now whole testing process is still being carried out, and then testing result can be caused inaccurate, the calculating of final impact many electric-field dust collectors dedusting ratio.
In order to solve the problem, please refer to accompanying drawing 5, Fig. 5 and showing sintering system many electric-field dust collectors electric field dedusting that the embodiment of the present invention three provides flow process than acquisition methods.
Flow process shown in Fig. 5, comprising:
S302, detected for the first actuation time.
This step usually by timer from the first ash-storing bin dust from hole capital after selling all securities during settlement gauge, when high charge level switch motion, write down first actuation time a
1.
S303, judge whether the first actuation time was less than or equal to the first setting value.
This step to first actuation time a
1this change compares with the first setting value, usually, due to the working conditions change of sintering system, can cause parameter that small change can occur, as long as can think the accuracy of parameter in rational scope.The first setting value M1=k in this step
2* t
1', wherein, k
2for coefficient, 1.5≤k
2≤ 2, t
1' be the average of repeatedly the first sedimentation time in (such as one month) in the first sedimentation time of the first ash unloading bin historical record or setting-up time section.
The result judged as S303 is yes, then illustrate first actuation time a
1be within rational scope, then enter step S304; When S303 judge result be no time, then illustrate first actuation time a
1unreasonable, mean that high charge level switch breaks down, now can enter step S305.
S304, using the first actuation time as the first sedimentation time.
S305, high charge level switch fault to be reported to the police.
Step S305 reports to the police to high charge level switch fault, and then reminds associative operation personnel to keep in repair.
The present embodiment three was verified by the first actuation time dust being settled down to by hole capital after selling all securities to high charge level switch motion experience, and then when judging to adopt this kind of mode to detect for the first sedimentation time, the accuracy of testing result, also high charge level switch can be checked whether healthy simultaneously, can be reminded by the mode of reporting to the police, the self-inspection performance of equipment can be improved.
It should be noted that, in Fig. 5, step S301, S306, S307, S308 and S309 respectively with S101, S103, S104, S105 and S106 one_to_one corresponding in Fig. 3, and content is identical, and specifically please refer to the description of appropriate section in embodiment one, this does not repeat.
Embodiment four
Identical with embodiment three, second sedimentation time also can be checked by stuff level switch, in the course of work of reality, because stuff level switch is consumable accessory, be easy in damaged condition, but now whole testing process is still being carried out, and then testing result can be caused inaccurate, the final calculating affecting sintering system dedusting ratio, the i.e. calculating of target dedusting ratio.
In order to solve the problem, please refer to accompanying drawing 6, Fig. 6 and showing sintering system many electric-field dust collectors electric field dedusting that the embodiment of the present invention four provides flow process than acquisition methods.
Flow process shown in Fig. 6, comprising:
S403, detected for the second actuation time.
This step by timer from the second ash-storing bin dust from hole capital after selling all securities starts settlement gauge, end when the high charge level switch motion of the second ash-storing bin, write down experience second actuation time a
2.
S404, judge whether the second actuation time was less than or equal to the second setting value.
This step to second actuation time a
2this change compares with the second setting value, usually, due to the working conditions change of sintering system, can cause parameter that small change occurs, as long as can think the accuracy of parameter in rational scope.The second setting value M2=k in this step
2* t
2', wherein, k
2for coefficient, 1.5≤k
2≤ 2, t
2' be the average of repeatedly the second sedimentation time in (such as one month) in the second sedimentation time of described ash unloading bin historical record or setting-up time section.
The result judged as S404 is yes, then illustrate second actuation time a
2be within rational scope, then enter step S405; When S404 judge result be no time, then illustrate second actuation time a
2unreasonable, mean that high charge level switch breaks down, now can enter step S406.
S405, using the second actuation time as the second sedimentation time.
S406, high charge level switch fault to be reported to the police.
Step S406 reports to the police to high charge level switch fault, and then reminds associative operation personnel to keep in repair.
The present embodiment four was verified by the second actuation time dust being settled down to by the hole capital after selling all securities of the second ash-storing bin to high charge level switch motion experience, and then when judging to adopt this kind of mode to overhaul for the second sedimentation time, the accuracy of testing result, also high charge level switch can be checked whether healthy simultaneously, can be reminded by the mode of reporting to the police, and then the self-inspection performance of equipment can be improved.
It should be noted that, in Fig. 6, step S401, S402, S407, S408 and S409 respectively with S101, S102, S104, S105 and S106 one_to_one corresponding in Fig. 3, and content is identical, specifically please refer to the description of appropriate section in embodiment one, this does not repeat.
Embodiment five
Please refer to accompanying drawing 7, Fig. 7 and show sintering system many electric-field dust collectors dedusting that the embodiment of the present invention five provides structure than acquisition system.
Structure shown in Fig. 7, comprising:
Judging unit 501, pre-conditioned for judging whether to meet.
Under normal circumstances, due to the change of the factors such as SINTERING PRODUCTION operating mode, electric field health status, material condition, the dust removing effects of many each electric fields of electric-field dust collector can be affected, namely affect a rear potential electrical field of the first electric field and the target dedusting ratio of the first electric field.Now, empirically or Default Value setting subsequent electric field unload ash the time cannot adapt to actual production.So before acquisition target dedusting ratio, need pre-conditionedly to judge, to instruct subsequent operation some.The pre-conditioned proportions of sintering raw materials change that can comprise sintering system, or power on after described many electric-field dust collectors power-off.In order to ensure above-mentioned target dedusting than adapting to actual production change better, also can obtain according to default sense cycle, also can comprise so pre-conditioned and reach default sense cycle apart from dedusting last time than the time detected.Certainly, the above-mentioned pre-conditioned factor that can also affect target dedusting ratio for other, this does not repeat.
First detecting unit 502, to be settled down to the first sedimentation time of high charge level by hole capital after selling all securities for detecting dust in the first ash-storing bin.
Second detecting unit 503, to be settled down to the second sedimentation time of high charge level by hole capital after selling all securities for detecting dust in the second ash-storing bin.
First detecting unit 502 and the second detecting unit 503 detect the first sedimentation time t respectively
1with the second sedimentation time t
2both timing from hole capital after selling all securities, first ash-storing bin and the second ash-storing bin lay respectively in different electric fields, and the first ash-storing bin is arranged in the first electric field, the second ash-storing bin is arranged in the rear potential electrical field of the first electric field one, it should be noted that, in the specific embodiment of the invention, rear potential electrical field refers to the subsequent electric field of the first electric field, and the dedusting priority level of rear potential electrical field is lower than the first electric field, and rear potential electrical field can be the second electric field, the 3rd electric field etc.
Commonly unload in grey process, the dust of ash-storing bin should remain under high charge level, on low material level, this is because during the high charge level of the dust in many electric-field dust collectors ash-storing bin higher than ash-storing bin, may occur that dust floods the fault of electric field, cause electric field cisco unity malfunction, when the dust in many electric-field dust collectors ash-storing bin is lower than low material level, the air leak rate of air curtain of many electric-field dust collectors can be caused to increase, thus affect the SINTERING PRODUCTION of whole sintering system.In order to the control to dust charge level in ash-storing bin, high charge level switch and low stuff level switch is provided with in each ash-storing bin of each electric field of many electric-field dust collectors, on both high charge levels of being separately positioned on ash-storing bin and low material level, the signal sent by high charge level switch and low stuff level switch is to determine the sedimentation degree of dust.After the dust in ash-storing bin is drained, the signal of low stuff level switch is true, and the signal of high charge level switch is false, and when dust settling reaches high charge level, the signal of high charge level switch is true, high charge level switch motion.The time that first detecting unit 502 can be settled down to high charge level switch motion experience by dust in timer record first ash-storing bin from hole capital after selling all securities was the first sedimentation time, and the time that the second detecting unit 503 can be settled down to high charge level switch motion experience by dust in timer record second ash-storing bin from hole capital after selling all securities was the second sedimentation time.
Acquiring unit 504, for obtaining the target dedusting ratio of rear potential electrical field and the first electric field.
Acquiring unit 504 can be the first computation subunit, the result that the first computation subunit is calculated by formula (1) directly as target dedusting ratio, the target dedusting ratio of potential electrical field and the first electric field namely.
k
1=t
1/t
2（1）
In above-mentioned formula (1), t
1the first sedimentation time, t
2the second sedimentation time, k
1be rear potential electrical field and the target dedusting ratio of the first electric field, namely, potential electrical field removes the ratio of dust quantity except dust quantity and the first electric field.
Certainly, in the testing process of reality, such as proportions of sintering raw materials continued jitters within long period of time, now can there is target dedusting than detecting inaccurate problem, in order to solve the problem, acquiring unit 504, can also by following subunit computes target dedusting ratio.Acquiring unit 504 can comprise:
Second computation subunit, for calculating the reference dedusting ratio of rear potential electrical field and the first electric field.
By formula (2) computing reference dedusting ratio.
k
4=t
1/t
2（2）
In above-mentioned formula (2), t
1the first sedimentation time, t
2it was the second sedimentation time; k
4it is rear potential electrical field and the reference dedusting ratio of the first electric field.
Obtain subelement, for obtaining the history dedusting ratio of rear potential electrical field and the first electric field.
Under normal circumstances, many electric-field dust collectors target dedusting ratio once on retaining in the process of the dedusting dedusting of the setting of dependence experience or Default Value (can be than), i.e. history dedusting ratio, can be inquired about from equipment by the mode of inquiry.
3rd computation subunit, for calculating target dedusting ratio.Target dedusting ratio is calculated by formula (3).
k=k
4/2+k
5/2（3）
In above-mentioned formula (3), k
4for reference dedusting ratio, k
5be history dedusting ratio, k is target dedusting ratio.
By calculating history dedusting ratio and asking for target dedusting ratio with reference to dedusting than the mode of average, the inaccurate problem of target dedusting ratio acquisition that the factor Long-term Fluctuations such as proportions of sintering raw materials cause can be reduced.
Updating block 505, for upgrading the current dedusting ratio of rear potential electrical field and the first electric field.
The target dedusting that updating block 505 utilizes acquiring unit 504 to obtain is than upgrading the current dedusting ratio of rear potential electrical field with the first electric field.
The acquisition system of sintering system many electric-field dust collectors electric field dedusting ratio that the embodiment of the present invention five provides, first detecting unit and the second detecting unit detect the dust settling time of a rear potential electrical field of the first electric field and the first electric field respectively, by obtaining the first sedimentation time and the second sedimentation time that can reflect dust settling situation, the target dedusting ratio of potential electrical field and the first electric field after then being obtained by the first sedimentation time and the second sedimentation time.The target dedusting of above-mentioned acquisition is than can the practical condition of reaction-sintered system, and then can determine more accurately rear potential electrical field unload ash the time, compared to dependence experience in background technology or Default Value, fixed rear potential electrical field unloads the ash time, more can improve according to target dedusting than determining that electric field unloads the accuracy of ash time, and then more adequately can instruct the ash that unloads of many electric-field dust collectors.
Each embodiment in this description all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio, is characterized in that, comprise the following steps:
Detect the first ash-storing bin dust and be settled down to the first sedimentation time of high charge level by hole capital after selling all securities and the second ash-storing bin dust is settled down to the second sedimentation time of high charge level by hole capital after selling all securities, described first ash-storing bin is arranged in the first electric field of described many electric-field dust collectors, and described second ash-storing bin is arranged in a rear potential electrical field of described first electric field;
Obtain the target dedusting ratio of described rear potential electrical field and described first electric field.
2. acquisition methods according to claim 1, is characterized in that, also comprises:
Judge whether to meet pre-conditioned, described pre-conditioned comprising reaches default sense cycle apart from target dedusting last time than the time detected; Or the proportions of sintering raw materials change of described sintering system; Or power on after described many electric-field dust collectors power-off;
When meet described pre-conditioned time, detect described first sedimentation time and described second sedimentation time.
3. acquisition methods according to claim 1, is characterized in that, obtains described rear potential electrical field and the target dedusting ratio of described first electric field, comprising:
According to k
1=t
1/ t
2calculate described target dedusting ratio, wherein k
1for target dedusting ratio, t
1be the first sedimentation time, t
2it was the second sedimentation time.
4. acquisition methods according to claim 1, is characterized in that, obtains described rear potential electrical field and the target dedusting ratio of described first electric field, comprising:
According to k
4=t
1/ t
2calculate the reference dedusting ratio of described rear potential electrical field and described first electric field;
Obtain the history dedusting ratio of described rear potential electrical field and described first electric field;
Utilize k=k
4/ 2+k
5/ 2 calculate described target dedusting ratio, wherein, and k
4for reference dedusting ratio, k
5be history dedusting ratio, k is target dedusting ratio, t
1be the first sedimentation time, t
2it was the second sedimentation time.
5. according to the acquisition methods in claim 1-4 described in any one, it is characterized in that, detect described second ash-storing bin dust is settled down to high charge level the second sedimentation time by hole capital after selling all securities, comprising:
Detect described second ash-storing bin dust is settled down to low material level the 3rd sedimentation time by hole capital after selling all securities;
The dust inquired about in described second ash-storing bin falls the dust volume ratio that low material level and dust fall high charge level;
Utilize t
2=t
3/ k
3calculate described second sedimentation time, wherein t
3be the 3rd sedimentation time, k
3for dust volume ratio, t
2it was the second sedimentation time.
6. according to the acquisition methods in claim 1-4 described in any one, it is characterized in that, detect dust in described first ash-storing bin and be settled down to the first sedimentation time of high charge level by hole capital after selling all securities, comprising:
Detect dust in described first ash-storing bin and start to be settled down to the first actuation time of the high charge level switch motion experience of described first ash-storing bin from hole capital after selling all securities;
Judge whether described first actuation time is less than or equal to the first setting value;
When being less than or equal to the first setting value described first actuation time, using described first actuation time as the first sedimentation time.
7. according to the acquisition methods in claim 1-4 described in any one, it is characterized in that, detect dust in described second ash-storing bin and be settled down to the second sedimentation time of high charge level by hole capital after selling all securities, comprising:
Detect dust in described second ash-storing bin and start to be settled down to the second actuation time of the high charge level switch motion experience of the second ash-storing bin from hole capital after selling all securities;
Judge whether described second actuation time is less than or equal to the second setting value;
When being less than or equal to the second setting value described second actuation time, using described second actuation time as the second sedimentation time.
8. the acquisition system of sintering system many electric-field dust collectors electric field dedusting ratio, is characterized in that, comprising:
First detecting unit, to be settled down to the first sedimentation time of high charge level by hole capital after selling all securities for detecting the first ash-storing bin dust, described first ash-storing bin is arranged in the first electric field of described many electric-field dust collectors;
Second detecting unit, to be settled down to the second sedimentation time of high charge level by hole capital after selling all securities for detecting the second ash-storing bin dust, described second ash-storing bin is arranged in potential electrical field after of described first electric field;
Acquiring unit, for obtaining the target dedusting ratio of described rear potential electrical field and described first electric field.
9. acquisition system according to claim 8, is characterized in that, described acquiring unit comprises:
First computation subunit, for according to k
1=t
1/ t
2calculate described target dedusting ratio, wherein, k
1for target dedusting ratio, t
1be the first sedimentation time, t
2it was the second sedimentation time.
10. acquisition system according to claim 8, is characterized in that, described acquiring unit comprises:
Second computation subunit, for according to k
4=t
1/ t
2calculate the reference dedusting ratio of described rear potential electrical field and described first electric field;
Obtain subelement, obtain described rear potential electrical field and described first electric field history dedusting ratio;
3rd computation subunit, utilizes k=k
4/ 2+k
5/ 2 calculate described target dedusting ratio, wherein, and k
4for reference dedusting ratio, k
5be history dedusting ratio, k is target dedusting ratio, t
1be the first sedimentation time, t
2it was the second sedimentation time.
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| CN201310730814.6A CN103706481B (en) | 2013-12-26 | 2013-12-26 | The acquisition methods of sintering system many electric-field dust collectors electric field dedusting ratio and system |
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| CN101556114A (en) * | 2009-04-14 | 2009-10-14 | 柳州钢铁股份有限公司 | Sintering dust-removal air pressure homogenizing method and system |
| CN201613182U (en) * | 2010-04-20 | 2010-10-27 | 戴明君 | Corona blue light dust collector |
| CN202968583U (en) * | 2012-12-15 | 2013-06-05 | 武钢集团昆明钢铁股份有限公司 | Dust removal device for automatically controlling ash transportation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6227054A (en) * | 1985-07-26 | 1987-02-05 | Mitsubishi Heavy Ind Ltd | Dust discharging device |
| ZA856265B (en) * | 1985-08-19 | 1987-03-25 | Walther & Cie Ag | Level monitoring system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101556114A (en) * | 2009-04-14 | 2009-10-14 | 柳州钢铁股份有限公司 | Sintering dust-removal air pressure homogenizing method and system |
| CN201613182U (en) * | 2010-04-20 | 2010-10-27 | 戴明君 | Corona blue light dust collector |
| CN202968583U (en) * | 2012-12-15 | 2013-06-05 | 武钢集团昆明钢铁股份有限公司 | Dust removal device for automatically controlling ash transportation |
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