CN103691560B - The many electric-field dust collectors of sintering system unload detection method and the system in ash cycle - Google Patents
The many electric-field dust collectors of sintering system unload detection method and the system in ash cycle Download PDFInfo
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Abstract
The present invention discloses the detection method that the many electric-field dust collectors of a kind of sintering system unload the ash cycle, comprises the following steps: the dust in the first ash-storing bin of emptying described many electric-field dust collector first electric fields; Close the unloading valve of emptying rear described first ash-storing bin; Detect dust in described first ash-storing bin and be settled down to the first sedimentation time of low material level by hole capital after selling all securities; Detect dust in described first ash-storing bin and be settled down to the second sedimentation time of high charge level by hole capital after selling all securities; According to T=N
1* (t
2-t
1) calculate described many electric-field dust collectors unload ash the cycle.Present invention also offers the detection system that the many electric-field dust collectors of a kind of sintering system unload the ash cycle.Compared to described in background technology by experience or Default Value determine unload ash the cycle, more can adapt to the specific environment of SINTERING PRODUCTION, can to many electric-field dust collectors unload ash work instruct more accurately.
Description
Technical field
The present invention relates to sintering system dedusting technology field, more specifically, relate to detection method and system that the many electric-field dust collectors of a kind of sintering system unload the ash cycle.
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.
Patent document CN202968583U is the immediate prior art of the present invention, 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 above-mentioned each electric field has huge 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%, No. three electric fields 04 remove the dust of in residue 1% dust about 90%.In the production process of reality, each electric field of three electric-field dust collectors unload ash the working time, also roughly distribute according to above-mentioned rule.
The above-mentioned explanation just carried out for three electric-field dust collectors, as a same reason, each electric field of many electric-field dust collectors unload ash the time be also according to its unload grey efficiency distribute, whole unload ash the cycle usually rely on the Default Value of experience or many electric-field dust collectors to formulate.
But, in the dust removal process of reality, the dust content of many electric-field dust collectors process is relevant with many manufacturing parameters such as character, output, proportioning of sintering plant raw material, and the change of these manufacturing parameters can affect concrete dust settling speed, the ash cycle of unloading finally causing dependence experience or Default Value to be formulated cannot adapt to concrete production status, and then also cannot instruct the carrying out unloading ash work more exactly.
Summary of the invention
The object of this invention is to provide the detection method that the many electric-field dust collectors of a kind of sintering system unload the ash cycle, the ash cycle of unloading of formulating to solve dependence experience or Default Value in background technology cannot be instructed more exactly and unload grey problem.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The many electric-field dust collectors of sintering system unload the detection method in ash cycle, comprise the following steps:
Dust in first ash-storing bin of emptying described many electric-field dust collector first electric fields;
Close the unloading valve of emptying rear described first ash-storing bin;
Detect dust in described first ash-storing bin and be settled down to the first sedimentation time of low material level by hole capital after selling all securities;
Detect dust in described first ash-storing bin and be settled down to the second sedimentation time of high charge level by hole capital after selling all securities;
According to T=N
1* (t
2-t
1) calculate described many electric-field dust collectors unload ash the cycle, wherein, N
1for dust settling coefficient, and 0.5≤N
1≤ 1, T be described many electric-field dust collectors unload ash the cycle, t
1be the first sedimentation time, t
2it was the second sedimentation time.
Preferably, in above-mentioned detection method, also comprise:
Judge whether to meet pre-conditioned, described pre-conditioned comprising meets sense cycle; 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, the dust in the first ash-storing bin of emptying described many electric-field dust collector first electric fields.
Preferably, in above-mentioned detection method, the dust in the first ash-storing bin of emptying described many electric-field dust collector first electric fields, comprising:
Obtain the volume of described first ash-storing bin, and described first ash-storing bin unloading valve unload grey speed;
According to t
3=k
1* (V/F) calculates emptying required time, wherein: k
1for emptying coefficient, 1.2≤k
1≤ 3, V is the volume of described first ash-storing bin, F be described first ash-storing bin unloading valve unload grey speed, t
3for emptying required time;
Control described unloading valve according to described emptying required time and unload ash.
Preferably, in above-mentioned detection method, also comprise:
Receive the working state signal of described unloading valve;
Judge whether described working state signal is fault-signal;
When described working state signal is fault-signal, close described unloading valve, and the second ash-storing bin changing described first electric field carries out emptying operation, and report to the police.
Preferably, in above-mentioned detection method, detect dust in described first ash-storing bin and be settled down to the first sedimentation time of low material level by hole capital after selling all securities, comprising:
Detect the first actuation time from starting the low stuff level switch action of dedusting to described first ash-storing bin and experiencing;
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 described first sedimentation time.
Preferably, in above-mentioned detection method, detect dust in described first 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 Zi starting second actuation time of dedusting to the high charge level switch motion of described first ash-storing bin;
Judge whether described second actuation time is less than or equal to the second setting value, described second setting value is greater than described first 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.
Unload the detection method in ash cycle based on the many electric-field dust collectors of the above-mentioned sintering system provided, present invention also offers the detection system that the many electric-field dust collectors of a kind of sintering system unload the ash cycle, comprising:
Emptying control unit, for the dust in the first ash-storing bin of emptying many electric-field dust collector first electric fields, and closes the unloading valve of emptying rear described first ash-storing bin;
First detecting unit, to be settled down to the first sedimentation time of low material level by hole capital after selling all securities for detecting dust in described first ash-storing bin;
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 dust in described first ash-storing bin;
Computing unit, for according to T=N
1* (t
2-t
1) calculate described many electric-field dust collectors unload ash the cycle, wherein, N
1for dust settling coefficient, and 0.5≤N
1≤ 1, T be described many electric-field dust collectors unload ash the cycle, t
1be the first sedimentation time, t
2it was the second sedimentation time.
Preferably, in said detecting system, described emptying control unit comprises:
Obtain subelement, for obtaining the volume of described first ash-storing bin, and described first ash-storing bin unloading valve unload grey speed;
Computation subunit, for calculating emptying required time according to t3=k1* (V/F), wherein: k1 is emptying coefficient, 1.2≤k1≤3, V is the volume of described first ash-storing bin, F be described first ash-storing bin unloading valve unload grey speed, t3 is emptying required time;
Controlling subelement, unloading ash for controlling described unloading valve according to described emptying required time.
Preferably, in said detecting system, described first detecting unit comprises:
First detection sub-unit, for detecting Zi starting first actuation time of dedusting to the low stuff level switch action of described first ash-storing bin;
First judgment sub-unit, for judging whether described first actuation time is less than or equal to the first setting value;
First assignment subelement, for when being less than or equal to the first setting value described first actuation time, using described first actuation time as described first sedimentation time.
Preferably, in said detecting system, described second detecting unit comprises:
Second detection sub-unit, for detecting Zi starting second actuation time of dedusting to the high charge level switch motion of described first ash-storing bin;
Second judgment sub-unit, judge whether described second actuation time is less than or equal to the second setting value, described second setting value is greater than described first setting value;
Second assignment subelement, for 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.
The many electric-field dust collectors of sintering system provided by the invention unload in the detection method in ash cycle, by emptying for the dust in the first ash-storing bin of many electric-field dust collector first electric fields and close the first ash-storing bin unloading valve after, being settled down to by hole capital after selling all securities dust in the first sedimentation time of low material level and the first ash-storing bin to be settled down to high charge level the second sedimentation time by hole capital after selling all securities by detecting dust in the first ash-storing bin respectively, utilizing T=N
1* (t
2-t
1) calculate many electric-field dust collectors unload ash the cycle.Described detection method can according to the many electric-field dust collectors of dust settling situation determination sintering system in the first electric field unload ash the cycle, compared to described in background technology by experience or Default Value determine unload ash the cycle, more can adapt to the specific environment of SINTERING PRODUCTION, 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 that many electric-field dust collectors of sintering system that the embodiment of the present invention one provides unload grey periodicity detection methods;
Fig. 4 is the flow chart that many electric-field dust collectors of sintering system that the embodiment of the present invention two provides unload grey periodicity detection methods;
Fig. 5 is the flow chart that many electric-field dust collectors of sintering system that the embodiment of the present invention three provides unload grey periodicity detection methods;
Fig. 6 is the flow chart that many electric-field dust collectors of sintering system that the embodiment of the present invention four provides unload grey periodicity detection methods;
Fig. 7 is the structure chart that many electric-field dust collectors of sintering system that the embodiment of the present invention five provides unload grey cycle detecting system;
Fig. 8 is the structure chart that many electric-field dust collectors of sintering system that the embodiment of the present invention six provides unload grey cycle detecting system;
Fig. 9 is the structure chart that many electric-field dust collectors of sintering system that the embodiment of the present invention seven provides unload grey cycle detecting system;
Figure 10 is the structure chart that many electric-field dust collectors of sintering system that the embodiment of the present invention eight provides unload grey cycle detecting system.
Detailed description of the invention
Embodiments provide the detection method that the many electric-field dust collectors of a kind of sintering system unload the ash cycle, solving the ash cycle of unloading that dependence experience or Default Value in background technology determine cannot instruct many electric-field dust collectors to unload the problem of ash exactly.
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.
Embodiment one
Please refer to the flow process that many electric-field dust collectors of sintering system that accompanying drawing 3, Fig. 3 shows the embodiment of the present invention one and provide unload grey periodicity detection methods.
Flow process shown in Fig. 3, comprising:
S101, judge whether to meet pre-conditioned.
Under normal circumstances, the ash cycle of unloading of many electric-field dust collectors is relevant with sintering operating mode, and the ash cycle of unloading of many electric-field dust collectors is an amount changed, and changes with the change of the factors such as electric field health status, material condition.Usually after above-mentioned condition changes, just carry out unloading the detection in ash cycle, therefore need before testing 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 the power-off of many electric-field dust collectors (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 that unloading the ash cycle adapts to actual production change better, also periodically can obtain according to default sense cycle, namely meet default sense cycle pre-conditioned also can comprising.Certainly, above-mentioned pre-conditioned can also for other impact unload ash the cycle factor, this does not repeat.
Step S101, to pre-conditioned judgement, when meeting pre-conditioned, then enters step S102; Otherwise, enter step S108.
Dust in S102, emptying many electric-field dust collector first electric field first ash-storing bins.
The many electric-field dust collectors of sintering system are arranged on the sintering machine head end position of sintering system usually, can certainly be arranged on other position that can process sinter fume.In the course of work of reality, the efficiency of dust collection of each electric field is all not identical, each electric field except dust quantity from first electric field (as in background No. one electric field) of many electric-field dust collectors, the rear potential electrical field follow-up to it reduces gradually.The scale of each electric field of many electric-field dust collectors under normal circumstances, the capacity of each ash-storing bin is all identical, so do not unloading ash or unloading in the process of ash wait, dust charge level in the ash-storing bin of the first electric field rises the fastest, and in follow-up rear potential electrical field, ash-storing bin is owing to rising slower except the less dust charge level of dust quantity.Because dedusting work mainly concentrates on the first electric field (almost removing the dust of 90%), in first electric field ash-storing bin dust charge level change be only impact many electric-field dust collectors unload ash the cycle most important considerations, so by the first electric field detect many electric-field dust collectors unload ash the cycle just there is practical significance.
The ash-storing bin arranged under each electric field of many electric-field dust collectors of common model sintering system is generally multiple (as shown in Figure 2), such as 2-4, under each electric field of many electric-field dust collectors of large scale sintering system, 4 ash-storing bins are set even more, each ash-storing bin is arranged side by side, and each ash-storing bin is arranged with the unloading valve for unloading ash.In normal situation, in many electric-field dust collectors ash-storing bin, dust should remain under high charge level, on low material level.This is because when 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 increase of electric cleaner air leak rate of air curtain can be caused, thus affect the efficiency of whole dust pelletizing system, increase the energy consumption of dedusting fan.And the junction of unloading valve and ash-storing bin is the position that many electric-field dust collectors can not seal, if ash-storing bin is emptying, junction from unloading valve to ash-storing bin has to leak out and enters in many electric-field dust collectors, many electric-field dust collectors are arranged in the Dustproof air flue of sintering system, a part for Dustproof air flue can be considered as, leak out so above-mentioned and finally can enter into Dustproof air flue, increase the air leak rate of air curtain of dust pelletizing system, be unfavorable for efficiently carrying out of dust pelletizing system.
In the dust stratification process of reality, the dust stratification efficiency of each ash-storing bin in the first electric field is substantially identical, in step S101 emptying many electric-field dust collector first electric fields the first ash-storing bin in dust, by emptying for the first ash-storing bin (ash-storing bin), being equivalent to one leaks out a little, ensures that leaking out of many electric-field dust collectors in testing process is a little minimum.Certainly, the first ash-storing bin refers to any one ash-storing bin in the first electric field, and when emptying, the first ash-storing bin should depart from and unloads grey sequential.
S103, close emptying after the unloading valve of the first ash-storing bin.
The unloading valve of the first ash-storing bin emptying in step S102 is closed, realizes the closedown of the first ash-storing bin.
S104, detect dust in the first ash-storing bin and be settled down to the first sedimentation time of low material level by hole capital after selling all securities.
S105, detect dust in the first ash-storing bin and be settled down to the second sedimentation time of high charge level by hole capital after selling all securities.
Step S104 detects dust in the first ash-storing bin and is settled down to the first sedimentation time t of low material level by hole capital after selling all securities
1, step S105 detects dust in the first ash-storing bin and is settled down to the second sedimentation time t of high charge level by hole capital after selling all securities
2.Usually start to unload ash by detection stuff level switch from hole capital after selling all securities in above-mentioned two steps to realize to the time starting action experience, high charge level switch and low stuff level switch is provided with, on the high charge level being separately positioned on ash-storing bin and low material level in each ash-storing bin of each electric field of usual many electric-field dust collectors.After the dust in the first ash-storing bin is drained, the signal of low stuff level switch is true, and the signal of high charge level switch is false, when dust settling arrives low material level, low stuff level switch action, the signal of low stuff level switch becomes vacation, and the time of this process experience is the first sedimentation time t
1, pass through timer record.Along with the continuation sedimentation of dust, when dust settling arrives high charge level position, the signal of high charge level switch is true, high charge level switch motion, and the time arriving high charge level experience from hole capital after selling all securities is the second sedimentation time t
2.
Except the timing means that above-mentioned employing detects stuff level switch action, other sensor can also be adopted to detect dust and to reach the first sedimentation time t that low material level and high charge level experience respectively
1with the second sedimentation time t
2.
S106, calculate many electric-field dust collectors unload ash the cycle.
The first sedimentation time t that this step utilizes step S104 and step S105 to obtain
1with the second sedimentation time t
2, according to formula (1) calculate many electric-field dust collectors unload ash the cycle.
T＝N
1*(t
2-t
1)(1)
In formula (1), T be many electric-field dust collectors unload ash the cycle, t
1be the first sedimentation time, t
2the second sedimentation time, N
1dust settling coefficient, 0.5≤N
1≤ 1, work as N
1when=0.5, the first ash-storing bin often accumulates the dust of 50% available space, namely starts to unload ash.N
1when=1, namely the dust that the first ash-storing bin often accumulates 100% available space starts to unload ash, and available space herein refers to the volume between the first ash-storing bin low material level to high charge level, does not refer to whole volumes of the first ash-storing bin.
S107, upgrade many electric-field dust collectors when front dump ash the cycle.
S108, end operation.
This step refers to when step S101 does not meet pre-conditioned, and detection of end operates.
The many electric-field dust collectors of the sintering system that the embodiment of the present invention one provides unload in the detection method in ash cycle, after unloading valve that is emptying for the dust in the first ash-storing bin of many electric-field dust collector first electric fields and that close this first ash-storing bin, being settled down to by hole capital after selling all securities dust in the first sedimentation time of low material level and the first ash-storing bin to be settled down to high charge level the second sedimentation time by hole capital after selling all securities by detecting the first ash-storing bin dust respectively, utilizing T=N
1* (t
2-t
1) calculate many electric-field dust collectors unload ash the cycle.Described detection method can according to the many electric-field dust collectors of dust settling situation determination sintering system in the first electric field unload ash the cycle, compared to described in background technology by experience or Default Value determine unload ash the cycle, more can adapt to the specific environment of SINTERING PRODUCTION, can instruct more accurately the ash work of unloading of many electric-field dust collectors.
In addition, unload in grey process in reality, high charge level switch is that start-up connector controls unloading valve and opens activation members to start to unload ash work, and low stuff level switch is that start-up connector controls unloading valve and closes activation members to stop unloading ash work.And high charge level switch and low stuff level switch are consumable accessorys, action can affect the service life of high charge level switch and low stuff level switch continually.Above-mentioned utilize formula (1) to calculate unload ash the cycle, be smaller than the second sedimentation time t
2with the first sedimentation time t
1difference, can make in the dust stratification process of reality, dust in ash-storing bin does not also reach high charge level and many electric-field dust collectors start to unload ash, this can reduce the action frequency of high charge level switch, consider that high charge level switch is consumable accessory dexterously, frequent movement can affect this defect of its life-span, can extend the life-span of high charge level switch.
Simultaneously, the process that the detection method that the many electric-field dust collectors of the sintering system that the present embodiment one provides unload the ash cycle is being implemented, when adopting the mode of stuff level switch to obtain the first sedimentation time and the second sedimentation time, the actuating signal of high charge level switch and low stuff level switch can be utilized to carry out unloading the calculating in ash cycle, this process is owing to needing again high charge level switch and low stuff level switch action, and then whether normally can test to high charge level switch and low stuff level switch work, when successively each ash-storing bin disengaging of the first electric field being unloaded grey sequential according to sense cycle and detecting, finally can detect the health status of each ash-storing bin stuff level switch of the first electric field.
The many electric-field dust collectors of sintering system provided at enforcement the present embodiment one unload in the detection method process in ash cycle, can according to setting cycle, sequentially the detection that many electric-field dust collectors unload the ash cycle is implemented to ash-storing bin each in the first electric field, namely one-period detects the first ash-storing bin (ash-storing bin) in the first electric field, and next sense cycle detects second ash-storing bin (a namely other ash-storing bin) of the first electric field.In concrete implementation process, above-mentioned setting cycle is preferably greater than many electric-field dust collectors and unloads the ash cycle, ensures that leaking out of system is a little always one, ensures leaking out of sintering system in minimum degree.Simultaneously, sequentially each ash-storing bin in the first electric field is operated, make whole many electric-field dust collectors unload the ash cycle to be in dynamic adjustment process, and then dedusting operating mode can be adapted to better, finally can unloading ash work and instruct more accurately many electric-field dust collectors.
Embodiment two
In embodiment one emptying many electric-field dust collector first electric fields of step S102 the first ash-storing bin in dust, this step usually adopts more rough emptying mode in the operating process of reality, waits for, until the dust emission in ash-storing bin is complete after namely opening unloading valve.This kind of mode is difficult to the closedown opportunity grasping unloading valve, if unloading valve closes the accuracy that can affect subsequent detection too early, if it is more late that unloading valve is closed, so the first ash-storing bin a little causes sintering system Dustproof air flue to communicate within the longer time with the external world as leaking out, the air leak rate of air curtain of further increase sintering system, causes that the energy consumption of sintering system is large and sintering efficiency is low.
In order to solve the problem, please refer to the flow process that many electric-field dust collectors of sintering system that accompanying drawing 4, Fig. 4 shows the embodiment of the present invention two and provide unload the detection method in ash cycle.
Flow process shown in Fig. 4, comprising:
S202, obtain the volume of the first ash-storing bin, and the first ash-storing bin unloading valve unload grey speed.
Under normal circumstances, the volume V of each ash-storing bin in many electric-field dust collectors first electric field of same sintering system is all identical, i.e. V
1=V
2=V
x=V.All ash-storing bin unloading valves to unload grey speed also identical, F
1=F
2=F
3=F.The unloading grey speed F and can be obtained by the equipment data of many electric-field dust collectors of the first ash-storing bin volume V in this step and ash-storing bin unloading valve.
S203, calculate the emptying required time of the first ash-storing bin.
The emptying required time t of the first ash-storing bin is calculated according to formula (2)
3.
t
3＝k
1*(V/F)(2)
In above-mentioned formula (2), k
1for emptying coefficient, 1.2≤k
1≤ 3; V is the volume of ash-storing bin, unit m
3; F be unloading valve unload grey speed, unit is m
3/ second, t is emptying required time, and unit is second.
S204, control unloading valve according to emptying required time and unload ash.
The emptying required time that step S204 utilizes step S203 to calculate is for according to controlling the emptying ash that unloads of unloading valve.
The present embodiment two improves on the basis of embodiment one, according to the emptying required time t of performance ginseng accurate Calculation of the first ash-storing bin of the first electric field
3, and then more accurately can determine the working time of unloading valve, reduce the air leak rate of air curtain of sintering system.
It should be noted that, the step S201 in Fig. 4, S205-S210 respectively with step S101, S103--S108 one_to_one corresponding in Fig. 3, and content is identical, and corresponding part please refer in embodiment one and describes accordingly, and this does not repeat.
In the detection method that the present embodiment two provides, in the process of dust in emptying first ash-storing bin, if there is fault, follow-up detection will be had a strong impact on, in order to head it off, the detection method that the embodiment of the present invention two provides, further comprising the steps of:
The working state signal of A1, reception unloading valve.
A2, judge whether working state signal is fault-signal.
A3, when working state signal is fault-signal, close unloading valve, and change second ash-storing bin (another ash-storing bin namely in the first electric field) of the first electric field and carry out emptying operation, and report to the police.
When the working state signal (such as indicator lamp, power supply signal etc.) of unloading valve is for fault-signal, stop that the unloading valve of the first ash-storing bin is emptying unloads ash, another ash-storing bin (i.e. the second ash-storing bin) of timely replacing first electric field carries out emptying operation, ensure the carrying out detected, warning reminding staff carries out corresponding maintenance operation simultaneously.
Embodiment three
Known by the description in embodiment one, the first sedimentation time t
1can be detected by stuff level switch, in the course of work of reality, because stuff level switch is consumable accessory, be easy in damaged condition, during but now whole testing process is still in and carries out, and then cause whole testing process inaccurate, finally affect the detection that the many electric-field dust collectors of sintering system unload the ash cycle.
In order to solve the problem, please refer to the flow process that many electric-field dust collectors of sintering system that accompanying drawing 5, Fig. 5 shows the embodiment of the present invention three and provide unload grey periodicity detection methods.
Flow process shown in Fig. 5, comprising:
S304, to detect Zi starting first actuation time of dedusting to the low stuff level switch action of the first ash-storing bin.
This step usually by timer from dedusting (hole capital after selling all securities) timing, end when low stuff level switch action, write down first actuation time a
1.
S305, judge whether the first actuation time was less than or equal to the first setting value.
In 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 occurs, 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 the historical record of the first ash unloading bin first sedimentation time or setting-up time section (such as month).The result judged as S305 is yes, then illustrate first actuation time a
1be within rational scope, then enter step S306; When S305 judge result be no time, then illustrate first actuation time a
1unreasonable, mean that low stuff level switch breaks down, now can enter step S307.
S306, using the first actuation time as the first sedimentation time.
S307, low stuff level switch fault to be reported to the police.
Step S307 reports to the police to low stuff level switch fault, and then reminds associative operation personnel to keep in repair.
It should be noted that, in Fig. 5, step S301, S302, S303, S308-S311 respectively with step S101, S102, S103 and S105-S108 one_to_one corresponding in Fig. 3, and content is identical, corresponding part please refer in embodiment one and describes accordingly, and this does not repeat.
Embodiment four
With similar in embodiment three, the second sedimentation time t
2also can be detected by stuff level switch, in the course of work of reality, because stuff level switch is consumable accessory, be easy in damaged condition, but during now whole testing process is still carried out, finally can affect the detection that the many electric-field dust collectors of sintering system unload the ash cycle.
In order to solve the problem, please refer to the flow process that many electric-field dust collectors of sintering system that accompanying drawing 6, Fig. 6 shows the embodiment of the present invention four and provide unload grey periodicity detection methods.
Flow process shown in Fig. 6, comprising:
S405, to detect Zi starting second actuation time of dedusting to the high charge level switch motion of the first ash-storing bin.
This step usually by timer from dedusting (hole capital after selling all securities) timing, when high charge level switch motion, write down second actuation time a
2.
S406, judge whether the second actuation time was less than or equal to the second setting value, described second setting value is greater than described first setting value.
In 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 historical record of described ash unloading bin second sedimentation time, i.e. the last record detected.The result judged as S406 is yes, then illustrate first actuation time a
1be within rational scope, then enter step S407; When S406 judge result be no time, then illustrate second actuation time a
2unreasonable, mean that high charge level switch breaks down, now also can enter step S408.
S407, using the second actuation time as the second sedimentation time.
S408, high charge level switch fault to be reported to the police.
Step S408 reports to the police to low stuff level switch fault, and then reminds associative operation personnel to keep in repair.
It should be noted that, in Fig. 6 step S401-S404 and S409-S411 respectively with the step S101-S104 in Fig. 1 and S106-S108 one_to_one corresponding, and content is identical, and concrete please refer to appropriate section in embodiment one, and this does not repeat.
Embodiment five
Please refer to accompanying drawing 7, Fig. 7 is the structure that many electric-field dust collectors of sintering system that the embodiment of the present invention five provides unload grey cycle detecting system.
Structure shown in Fig. 7, comprises judging unit 501, emptying control unit 502, first detecting unit 503, second detecting unit 504, computing unit 505 and updating block 506, wherein:
Judging unit 501, pre-conditioned for judging whether to meet, under normal circumstances, the ash cycle of unloading of many electric-field dust collectors is relevant with sintering operating mode, the ash cycle of unloading of many electric-field dust collectors is an amount changed, and changes with the change of the factors such as electric field health status, material condition.Usually after above-mentioned condition changes, just carry out unloading the detection in ash cycle, therefore need before testing 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 the power-off of many electric-field dust collectors (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 that unloading the ash cycle adapts to actual production change better, also can obtain according to default sense cycle, namely so meet default sense cycle pre-conditioned also can comprising.Certainly, above-mentioned pre-conditioned can also for other impact unload ash the cycle factor, this does not repeat.
Emptying control unit 502, for the dust in the first ash-storing bin of emptying many electric-field dust collector first electric fields, and closes the unloading valve of emptying rear first ash-storing bin.
The many electric-field dust collectors of sintering system are arranged on the sintering machine head end position of sintering system usually, can certainly be arranged on other position that can process sinter fume.In the course of work of reality, the efficiency of dust collection of each electric field is all not identical, each electric field except dust quantity from first electric field (as in background No. one electric field) of many electric-field dust collectors, the rear potential electrical field follow-up to it reduces gradually.The scale of each electric field of many electric-field dust collectors under normal circumstances, the capacity of each ash-storing bin is all identical, so do not unloading ash or unloading in the process of ash wait, dust charge level in the ash-storing bin of the first electric field rises the fastest, and in follow-up rear potential electrical field, ash-storing bin is owing to rising slower except the less dust charge level of dust quantity.Because dedusting work mainly concentrates on the first electric field (almost removing the dust of 90%), the ash-storing bin of the first electric field dust charge level change be only impact many electric-field dust collectors unload ash the cycle most important considerations, so by the first electric field detect many electric-field dust collectors unload ash the cycle just there is practical significance.
The ash-storing bin arranged under each electric field of many electric-field dust collectors of common model sintering system is generally multiple (as shown in Figure 2), such as 2-4, under each electric field of many electric-field dust collectors of large scale sintering system, 4 ash-storing bins are set even more, each ash-storing bin is arranged side by side, and each ash-storing bin is arranged with the unloading valve for unloading ash.In normal situation, in many electric-field dust collectors ash-storing bin, dust should remain under high charge level, on low material level.This is because when the high charge level of the dust in many electric-field dust collectors ash-storing bin higher than this 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 increase of electric cleaner air leak rate of air curtain can be caused, thus affect the SINTERING PRODUCTION of whole sintering system.And the junction of unloading valve and ash-storing bin is the position that many electric-field dust collectors can not seal, if ash-storing bin is emptying, junction from unloading valve to ash-storing bin has to leak out and enters in many electric-field dust collectors, many electric-field dust collectors are arranged in the Dustproof air flue of sintering system, a part for Dustproof air flue can be considered as, leak out so above-mentioned and finally can enter into Dustproof air flue, increase the air leak rate of air curtain of sintering system, be unfavorable for efficiently carrying out of SINTERING PRODUCTION.
In the dust stratification process of reality, the dust stratification efficiency of each ash-storing bin in the first electric field is substantially identical, in emptying control unit 502 emptying many electric-field dust collector first electric fields the first ash-storing bin in dust, by emptying for the first ash-storing bin (ash-storing bin), being equivalent to one leaks out a little, ensures that leaking out of many electric-field dust collectors in testing process is a little minimum.Certainly, the first ash-storing bin refers to any one ash-storing bin in the first electric field, and when emptying, the first ash-storing bin should depart from and unloads grey sequential.
First detecting unit 503, to be settled down to the first sedimentation time of low material level by hole capital after selling all securities for detecting dust in the first ash-storing bin.
Second detecting unit 504, 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 first ash-storing bin.
Above-mentioned two detecting units start to unload ash to the time realization starting action experience from hole capital after selling all securities by detecting stuff level switch usually, high charge level switch and low stuff level switch is provided with, on the high charge level being separately positioned on ash-storing bin and low material level in each ash-storing bin of each electric field of usual many electric-field dust collectors.After the dust in the first ash-storing bin is drained, the signal of low stuff level switch is true, and the signal of high charge level switch is false, when dust settling arrives low material level position, low stuff level switch action, the signal of low stuff level switch becomes vacation, and the time of this process experience is the first sedimentation time t
1, pass through timer record.Along with the continuation sedimentation of dust, when dust settling arrives high charge level, the signal of high charge level switch is true, high charge level action, and the time arriving high charge level experience from hole capital after selling all securities is the second sedimentation time t
2.
Except the timing means that above-mentioned employing detects stuff level switch action, other sensor can also be adopted to detect dust and to reach the first sedimentation time t that low material level and high charge level experience respectively
1with the second sedimentation time t
2.
Computing unit 505, for calculate many electric-field dust collectors unload ash the cycle.
The first sedimentation time that above-mentioned computing unit 505 utilizes the first detecting unit 503 and the second detecting unit 504 to obtain respectively and the second sedimentation time, according to formula (1) calculate ash-storing bin unload ash the cycle, ash-storing bin unload ash the cycle as many electric-field dust collectors unload ash the cycle.
T＝N
1*(t
2-t
1)(1)
In formula (1), T be many electric-field dust collectors unload ash the cycle, t
1be the first sedimentation time, t
2the second sedimentation time, N
1dust settling coefficient, 0.5≤N
1≤ 1, work as N
1when=0.5, the first ash-storing bin often accumulates the dust of 50% available space, namely starts to unload ash.N
1when=1, namely the dust that the first ash-storing bin often accumulates 100% available space starts to unload ash, and available space herein refers to the volume between the first ash-storing bin low material level to high charge level, does not refer to whole volumes of the first ash-storing bin.
Updating block 506, for upgrade many electric-field dust collectors when front dump ash the cycle.
The many electric-field dust collectors of the sintering system that the embodiment of the present invention five provides unload in the detection system in ash cycle, emptying control unit 501 by emptying for the dust in the first ash-storing bin of many electric-field dust collector first electric fields and close the first ash-storing bin unloading valve after, first detecting unit 503 and the second detecting unit 504 detect the first ash-storing bin respectively and are settled down to the first sedimentation time of low material level by hole capital after selling all securities and the first ash-storing bin is settled down to the second sedimentation time of high charge level by hole capital after selling all securities, utilize T=N
1* (t
2-t
1) calculate many electric-field dust collectors unload ash the cycle.Described detection system can according to the many electric-field dust collectors of dust settling situation determination sintering system in the first electric field unload ash the cycle, compared to described in background technology by artificial experience determine unload ash the cycle, more can adapt to the environment of SINTERING PRODUCTION, the ash work of unloading of many electric-field dust collectors is instructed more accurately.
Embodiment six
In the embodiment of the present invention five, dust in first ash-storing bin of emptying many electric-field dust collector first electric fields of emptying control unit 502, in the control operation process of reality, usually adopt comparatively rough emptying mode, wait for until the dust emission in the first ash-storing bin is complete after namely opening unloading valve.This kind of mode is difficult to the closedown opportunity grasping unloading valve, if unloading valve closes the accuracy that can affect subsequent detection too early, if it is more late that fruit unloading valve is closed, so the first ash-storing bin a little causes sintering system Dustproof air flue to communicate with the external world in the longer time as leaking out, increase air leak rate of air curtain, and then increase energy consumption and the sintering efficiency of sintering system.
In order to solve the problem, please refer to the structure that many electric-field dust collectors of sintering system that accompanying drawing 8, Fig. 8 shows the embodiment of the present invention six and provide unload grey cycle detecting system.
Structure shown in Fig. 8, comprising:
Obtain subelement 602, for obtaining the volume of the first ash-storing bin, and the first ash-storing bin unloading valve unload grey speed.
Under normal circumstances, in many electric-field dust collectors first electric field of same sintering system, the volume of each ash-storing bin is all identical, i.e. V
1=V
2=V
x=V.The unloading valve of all ash-storing bins to unload grey speed also identical, F
1=F
2=F
3=F.Obtain subelement 602 and obtain unloading grey speed and can being obtained by the equipment data of many electric-field dust collectors of the first ash-storing bin volume and the first ash-storing bin unloading valve.
Computation subunit 603, for according to t
3=K
1* (V/F) calculates emptying required time t
3, wherein: K
1for emptying coefficient, 1.2≤k
1≤ 3; V is the volume of the first ash-storing bin, unit m
3; F be unloading valve unload grey speed, unit is m
3/ second, t is emptying required time, and unit is second.
Controlling subelement 604, unloading ash for controlling unloading valve according to emptying required time.
The present embodiment six improves on the basis of embodiment five, according to the emptying required time of performance parameter accurate Calculation of the first ash-storing bin of the first electric field, and then more accurately can determine the working time of unloading valve, reduces the air leak rate of air curtain of sintering system.
It should be noted that, in Fig. 8 judging unit 601, first detecting unit 605, second detecting unit 606, computing unit 607 and updating block 608 respectively with judging unit in Fig. 7 501, first detecting unit 503, second detecting unit 504, computing unit 505 and updating block 506 one_to_one corresponding, and function is identical, specifically please refer to the description of appropriate section in embodiment five, this does not repeat.
Embodiment seven
Known from the description embodiment five, first sedimentation time can be detected by stuff level switch, in the course of work of reality, because stuff level switch is consumable accessory, be easy in damaged condition, during but now whole testing process is still carried out, and then cause whole testing process inaccurate, finally affect the calculating that the many electric-field dust collectors of sintering system unload the ash cycle.
In order to solve the problem, please refer to the structure that many electric-field dust collectors of sintering system that accompanying drawing 9, Fig. 9 shows the embodiment of the present invention seven and provide unload grey cycle detecting system.
In structure shown in Fig. 9, the first detecting unit comprises:
First detection sub-unit 703, for detect Zi start dedusting to the first ash-storing bin low stuff level switch action first actuation time a
1; First detection sub-unit 703 usually by timer timing from dedusting, when low stuff level switch action, write down first actuation time a
1.
First judgment sub-unit 704, for judge described first actuation time a
1whether be less than or equal to the first setting value; Described first judgment sub-unit 704 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 occurs, as long as can think the accuracy of parameter in rational scope.Described first setting value M1=k
2* t
1', wherein, k
2for coefficient, 1.5≤k
2≤ 2, t
1' be the first sedimentation time historical record of the first ash unloading bin.When judged result is yes, then illustrate first actuation time a
1be within rational scope, the first assignment subelement 705 is started working; When judged result is no, then illustrate first actuation time a
1unreasonable, mean that low stuff level switch breaks down, now also can be reported to the police by the first alarm part-unit 706.
First assignment subelement 705, for when described first actuation time a
1when being less than or equal to the first setting value, by described first actuation time a
1as described first sedimentation time t
1.
First alarm part-unit 706, for low stuff level switch fault alarm, keeps in repair to remind associative operation personnel.
In the present embodiment seven, judging unit 701, emptying control unit 702, second detecting unit 707, computing unit 708 and updating block 709 respectively with the judging unit 501 in embodiment five, emptying control unit 502, second detecting unit 504, computing unit 505 and updating block 506 one_to_one corresponding, and function is identical, specifically please refer to the description of appropriate section in enforcement five, this does not repeat.
Embodiment eight
Similar with embodiment seven, the second sedimentation time t
2also can be detected by stuff level switch, in the course of work of reality, because stuff level switch is consumable accessory, be easy in damaged condition, during but now whole testing process is still carried out, and then cause whole testing process inaccurate, finally affect the calculating that the many electric-field dust collectors of sintering system unload the ash cycle.
In order to solve the problem, please refer to the structure that many electric-field dust collectors of sintering system that accompanying drawing 10, Figure 10 shows the embodiment of the present invention eight and provide unload grey periodicity detection methods.
Structure shown in Figure 10, comprising:
Second detection sub-unit 804, for detect Zi start dedusting to described ash-storing bin high charge level switch motion second actuation time a
2; Second detection sub-unit 804 usually by timer timing from dedusting, when high charge level switch motion, write down second actuation time a
1.
Second judgment sub-unit 805, judge described second actuation time a
2whether be less than or equal to the second setting value, described second setting value is greater than described first setting value; Second judgment sub-unit 804 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 can occur, 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 second sedimentation time of the previous record of described ash unloading bin.When judged result is yes, then illustrate second actuation time a
2be within rational scope, then start the second assignment subelement 806; When judged result is no, then illustrate second actuation time a
2unreasonable, mean that high charge level switch breaks down, now also can start the second alarm part-unit 807 and report to the police.
Second assignment subelement 806, for when described second actuation time a
2when being less than or equal to the second setting value, by described second actuation time a
2as the second sedimentation time t
2.
Second alarm part-unit 807, for reporting to the police to high charge level switch fault, keeps in repair to remind associative operation personnel.
In the present embodiment eight, judging unit 801, emptying control unit 802, first detecting unit 803, computing unit 808 and updating block 809 respectively with the judging unit 501 in embodiment five, emptying control unit 502, first detecting unit 503, computing unit 505 and updating block 506 one_to_one corresponding, and function is identical, specifically please refer to the description of appropriate section in embodiment five, this does not repeat.
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 many electric-field dust collectors of sintering system unload the detection method in ash cycle, it is characterized in that, comprise the following steps:
Dust in first ash-storing bin of emptying described many electric-field dust collector first electric fields;
Close the unloading valve of emptying rear described first ash-storing bin;
Detect dust in described first ash-storing bin and be settled down to the first sedimentation time of low material level by hole capital after selling all securities;
Detect dust in described first ash-storing bin and be settled down to the second sedimentation time of high charge level by hole capital after selling all securities;
According to T=N
1* (t
2-t
1) calculate described many electric-field dust collectors unload ash the cycle, wherein, N
1for dust settling coefficient, and 0.5≤N
1≤ 1, T be described many electric-field dust collectors unload ash the cycle, t
1be the first sedimentation time, t
2it was the second sedimentation time.
2. detection method according to claim 1, is characterized in that, also comprises:
Judge whether to meet pre-conditioned, described pre-conditioned comprising meets sense cycle; 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, the dust in the first ash-storing bin of emptying described many electric-field dust collector first electric fields.
3. detection method according to claim 1, is characterized in that, the dust in the first ash-storing bin of emptying described many electric-field dust collector first electric fields, comprising:
Obtain the volume of described first ash-storing bin, and described first ash-storing bin unloading valve unload grey speed;
According to t
3=k
1* (V/F) calculates emptying required time, wherein: k
1for emptying coefficient, 1.2≤k
1≤ 3, V is the volume of described first ash-storing bin, F be described first ash-storing bin unloading valve unload grey speed, t
3for emptying required time;
Control described unloading valve according to described emptying required time and unload ash.
4. detection method according to claim 3, is characterized in that, also comprises:
Receive the working state signal of described unloading valve;
Judge whether described working state signal is fault-signal;
When described working state signal is fault-signal, close described unloading valve, and the second ash-storing bin changing described first electric field carries out emptying operation, and report to the police.
5. according to the detection method 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 low material level by hole capital after selling all securities, comprising:
Detect the first actuation time from starting the low stuff level switch action of dedusting to described first ash-storing bin and experiencing;
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 described first sedimentation time.
6. detection method according to claim 5, is characterized in that, detects dust in described first ash-storing bin and is settled down to the second sedimentation time of high charge level by hole capital after selling all securities, comprising:
Detect Zi starting second actuation time of dedusting to the high charge level switch motion of described first ash-storing bin;
Judge whether described second actuation time is less than or equal to the second setting value; Described second setting value is greater than described first 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.
7. the many electric-field dust collectors of sintering system unload the detection system in ash cycle, it is characterized in that, comprising:
Emptying control unit, for the dust in the first ash-storing bin of emptying many electric-field dust collector first electric fields, and closes the unloading valve of emptying rear described first ash-storing bin;
First detecting unit, to be settled down to the first sedimentation time of low material level by hole capital after selling all securities for detecting dust in described first ash-storing bin;
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 dust in described first ash-storing bin;
Computing unit, for according to T=N
1* (t
2-t
1) calculate described many electric-field dust collectors unload ash the cycle, wherein, N
1for dust settling coefficient, and 0.5≤N
1≤ 1, T be described many electric-field dust collectors unload ash the cycle, t
1be the first sedimentation time, t
2it was the second sedimentation time.
8. detection system according to claim 7, is characterized in that, described emptying control unit comprises:
Obtain subelement, for obtaining the volume of described first ash-storing bin, and described first ash-storing bin unloading valve unload grey speed;
Computation subunit, for according to t
3=k
1* (V/F) calculates emptying required time, wherein: k
1for emptying coefficient, 1.2≤k
1≤ 3, V is the volume of described first ash-storing bin, F be described first ash-storing bin unloading valve unload grey speed, t
3for emptying required time;
Controlling subelement, unloading ash for controlling described unloading valve according to described emptying required time.
9. detection system according to claim 7, is characterized in that, described first detecting unit comprises:
First detection sub-unit, for detecting Zi starting first actuation time of dedusting to the low stuff level switch action of described first ash-storing bin;
First judgment sub-unit, for judging whether described first actuation time is less than or equal to the first setting value;
First assignment subelement, for when being less than or equal to the first setting value described first actuation time, using described first actuation time as described first sedimentation time.
10. detection system according to claim 9, is characterized in that, described second detecting unit comprises:
Second detection sub-unit, for detecting Zi starting second actuation time of dedusting to the high charge level switch motion of described first ash-storing bin;
Second judgment sub-unit, judge whether described second actuation time is less than or equal to the second setting value, described second setting value is greater than described first setting value;
Second assignment subelement, for 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.
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|---|---|---|---|---|
| CN2200483Y (en) * | 1994-02-08 | 1995-06-14 | 陈汉达 | Electric dedusting level-sensing device |
| CN201275503Y (en) * | 2008-09-27 | 2009-07-22 | 襄樊九鼎昊天环保设备有限公司 | Microcomputer observing and controlling instrument of electrostatic precipitator |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4256795B2 (en) * | 2004-02-12 | 2009-04-22 | 中国電力株式会社 | Cleaning method of electric dust collector |
| JP4331710B2 (en) * | 2005-09-02 | 2009-09-16 | 三菱重工環境エンジニアリング株式会社 | Dust collector and dust discharge method |
| JP5159856B2 (en) * | 2010-09-29 | 2013-03-13 | 中国電力株式会社 | Electric dust collection system and electric dust collection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2200483Y (en) * | 1994-02-08 | 1995-06-14 | 陈汉达 | Electric dedusting level-sensing device |
| CN201275503Y (en) * | 2008-09-27 | 2009-07-22 | 襄樊九鼎昊天环保设备有限公司 | Microcomputer observing and controlling instrument of electrostatic precipitator |
| 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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