CN104437877A - Method and device for determining discharging time sequence - Google Patents
Method and device for determining discharging time sequence Download PDFInfo
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- CN104437877A CN104437877A CN201410776941.4A CN201410776941A CN104437877A CN 104437877 A CN104437877 A CN 104437877A CN 201410776941 A CN201410776941 A CN 201410776941A CN 104437877 A CN104437877 A CN 104437877A
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Abstract
The invention discloses a method and a device for determining a discharging time sequence. The method comprises the following steps: obtaining dust sedimentation rates of various sub-dedusting units in a sintering electrical precipitator; determining a discharging cycle of the sintering electrical precipitator through the first dust sedimentation rate of the first sub-dedusting unit in the sub-dedusting units and the effective volume of the first sub-dedusting unit, wherein the first sub-dedusting unit is the unit with the highest dust sedimentation rate in the sintering electrical precipitator; and through the discharging cycle, the dust sedimentation rates of the sub-dedusting units and the discharging rate of the sintering electrical precipitator, determining the discharging time of each sub-dedusting unit according to the relationship between the discharging quantity of the sub-dedusting units within the discharging cycle and the dust sedimentation amount of the sub-dedusting units. According to the method and the device disclosed by the invention, the problem that a material level switch frequently works and is easily damaged due to an unreasonable discharging time sequence in the prior art is avoided.
Description
Technical field
The present invention relates to dedusting technology field, particularly relate to a kind of method and the device of determining to unload grey sequential.
Background technology
In recent years along with the development of industry, the environmental pollution that toxic emission causes is on the rise, and therefore needs the discharge of control polluted articles.And electric cleaner is exactly a kind of environmental protection equipment preferably, the particle flue dust in discharge flue gas is removed by its function, thus significantly reduces the fume amount entered in atmosphere, is that environmental protect pollutes, improves the important environmental protection equipment of air quality.
For sintering machine head end electric precipitation, electric cleaner and ash-transmission system schematic diagram thereof are as shown in Figure 1.Ash-laden gas 01 enters electric cleaner by flue, successively after multiple electric field dedusting (3-5 conventional electric field), arranges outward through dedusting fan, chimney (after being arranged at dedusting exhanst gas outlet).Electric cleaner institute chalk dust removing (hereinafter referred to as dedusting ash) falls into respective electric field ash-storing bin 021 and stores in short-term, electric field ash-storing bin 021 successively opens corresponding unloading valve 022 by certain rule, makes dedusting ash be transported to total ash-storing bin 08 through electric cleaner ash-transmission system (comprising: electric field ash-storing bin unloading valve 022, electric field scraper ash-transmission machine 05, total scraper ash-transmission machine 06, bucket elevator 07).Final dedusting ash is sent through dust outward transport system 09.
Under normal circumstances, in Electric Field in ESP ash-storing bin, dust should remain under high charge level, on low material level.When the dust in Electric Field in ESP ash-storing bin is higher than corresponding ash-storing bin high charge level, may occur that dust floods the fault of electric field, cause electric field not work; When the dust of Electric Field in ESP ash-storing bin is lower than low material level, electric cleaner air leak rate of air curtain can be caused to increase, thus increase SINTERING PRODUCTION energy consumption, affect SINTERING PRODUCTION.
The method that existing electric precipitation electric field determines to unload grey sequential is the method adopting the time control of fixed cycle fixed time sequence to combine with Level control.For the ease of understanding, unload the method for grey sequential with the determination of three electric field electric cleaners so that the existing method of determining to unload grey sequential of many electric fields electric cleaner to be described.
Three electric field electric cleaners unload ash the control time distribute and electric field ash-storing bin material level relation schematic diagram as shown in Figure 2, wherein, 1T be first, electric cleaner unload ash the cycle; 2T is that second, electric cleaner unloads the ash cycle; 1T1 be first unload ash the cycle in 1 electric field unload ash the time period; 1T2 be first unload ash the cycle in 2 electric fields unload ash the time period; 1T3 be first unload ash the cycle in 3 electric fields unload ash the time period; 1T0 be first unload ash the cycle in wait for unload ash the time period; 2T0 be second unload ash the cycle in wait for unload ash the period; 1t1 be first unload ash the cycle in 1 electric field unload ash start time; 1t2 be first unload ash the cycle in 1 electric field unload ash finish time, 2 electric fields unload ash start time; 1t3 be first unload ash the cycle in 2 electric fields unload ash finish time, 3 electric fields unload ash start time; 2t0 be first unload ash the cycle in 3 electric fields unload ash finish time, first is unloaded the grey end cycle moment, second unload ash start time in cycle; HH is electric field ash-storing bin height high charge level (back-up protection); H is electric field ash-storing bin high charge level; LL is the low material level (back-up protection) of electric field ash-storing bin; L is the low material level of electric field ash-storing bin.
As shown in Figure 2, the ash-transmission system control method of electric cleaner is one group of cycle is that each electric field that T repeats unloads grey combination of actions successively.First is unloaded ash cycle 1T and is made up of tetra-periods of 1T0,1T1,1T2,1T3; 1T0 is the dust settling stage, and within the 1T0 period, electric precipitation electric field does not unload ash, and the dust that electric precipitation electric field is caught drops gradually in each electric field dust cabin.In the 1t1 moment, in 1 electric field dust cabin, dust is close to high charge level, 1 electric field unload ash the time start.1t1 to the 2t0 period, be respectively 1 electric field and unload ash period 1T1,2 electric fields unloaded ash period 1T2, and 3 electric fields unload ash period 1T3 in order to unload the ash period.First Electric Field in ESP unloads after ash cycle 1T terminates, start second Electric Field in ESP and unload ash cycle 2T, second Electric Field in ESP unloads in ash cycle 2T, and each electric field unloads ash period 2T1,2T2,2T3 and dust settling period 2T0 unloads ash cycle 1T with first Electric Field in ESP.All the other unload the ash cycle with first to unload the grey cycle identical.
As shown in Fig. 2 ash-storing bin material level curve: namely in the 1t1 moment, the dust of 1 electric field ash-storing bin, to close to high charge level H, the 1t2 moment, drains into close to low material level L by 1 electric field dust settling; In the 1t2 moment, 2 electric field dust, to relatively high-order, in the 1t3 moment, are drained into relative low level by 2 electric field dust settlings; In the 1t3 moment, 3 electric field dust, to relatively high-order, in the 2t0 moment, are drained into low level by 3 electric field dust settlings.As can be seen from ash-storing bin material level curve, the dust settling amount of unloading each electric field ash-storing bin in the ash cycle at is identical with dust unloading ash capacity; The speed of 1 electric field dust settling is much larger than 2,3 electric fields, even if 2, there is dust settling amount and dust unloading ash capacity situation not etc. in 3 electric field ash-storing bins, its error accumulation to a controlling level also need multiple unload ash the cycle, so to unload ash the cycle play a decisive role be 1 electric field dust settling speed with unload grey speed.
In the production of reality, because the change of fluctuation and electric precipitation health status, in fact can not accomplish that each to unload the dust settling amount of ash-storing bin in the ash cycle identical with dust unloading ash capacity, in order to avoid causing dust to exceed high charge level because unload grey error accumulation or cause related accidents lower than low material level, existing way introduces stuff level switch to participate in controlling, Fig. 3, for three electric field ash-storing bins, illustrates that material level participates in controlling and the relation of unloading grey sequential.
As shown in Fig. 3 high charge level curve of participation, such as, unload in the ash cycle at 1T, due to production status fluctuation, cause originally unloading in the ash cycle, the electric precipitation ash-storing bin amount of gathering dust is comparatively large, and in the 1t1 ' moment, 1 electric field ash-storing bin reaches high charge level H, high charge level switch motion; Now walk by the ash cycle of unloading of electric precipitation, not yet unload ash start time 1t1 to 1 electric field, but 1 electric field unloads ash also can start immediately, unloads grey time span and still remains 1T1, unloading ash finish time is 1t2 '.2,3 electric fields unload ash and still remain original and unload grey sequential and carry out, and in 1t2 ' to the 1t2 moment, do not unload grey action.
Shown in material level curve of participation as low in Fig. 3, such as, unload in the ash cycle, owing to producing of short duration termination at 1T, cause originally unloading in the ash cycle, the electric precipitation ash-storing bin amount of gathering dust is less, unloads after ash starts at 1 electric field ash-storing bin, 1t2 " namely the moment arrive the low material level L of feed bin, low stuff level switch action; Now unload the ash cycle by electric precipitation to walk, should continue to unload ash to the 1t2 moment, but 1 electric field unloads ash can be stopped immediately, unloading grey time span is 1t1 to 1t2 ", at 1t2 " to the 1t2 moment, do not unload grey action.
In actual production, there is the height material level action in several cycle once in a while, inevitable, if but to unload the ash cycle and produce and seriously do not mate (the dust settling amount in the ash cycle of unloading namely determined and dust unloading ash capacity difference excessive), the method that previously described fixed cycle determines to unload grey sequential will cause unloading the situation that ash is being dominated by level signals; And the stuff level switch of the electric field ash-storing bin of electric cleaner is a consumable accessory, repeatedly easily damage after action.If sequential is dominated; level signals does back-up protection; stuff level switch energy work really long days; if level signals is dominated, sequential is substantially inoperative, and stuff level switch is easy to just damage; after level signals damages; just be easy to the fault generation causing previously described dust to flood the faults such as electric field and cause electric cleaner air leak rate of air curtain to increase, thus impact is produced, and increases production cost.
Summary of the invention
The object of this invention is to provide a kind of method and the device of determining to unload grey sequential, its object is to solve in prior art and unload grey sequential and arrange unreasonable and cause the problem of stuff level switch frequent operation.
For solving the problems of the technologies described above, the invention provides a kind of method of determining to unload grey sequential, comprising:
Obtain the dust settling speed of each point of dust removing units in sintering electric cleaner;
By the first dust settling speed of first point of dust removing units in described each point of dust removing units and the dischargeable capacity of described first point of dust removing units, the relation of the dischargeable capacity of described first point of dust removing units is no more than unloading the sedimentation total amount in the ash cycle according to first point of dust removing units, that determines described sintering electric cleaner unloads the ash cycle, described first point of dust removing units is the unit that in described sintering electric cleaner, dust settling speed is the fastest, and the dischargeable capacity of described first point of dust removing units is the volumetric values between described first point of high and low stuff level switch of dust removing units;
By described unload the ash cycle, the dust settling speed of each point of dust removing units and described sintering electric cleaner unload grey speed, according to described each point of dust removing units unloading the relation of dust settling amount of unloading ash capacity and described each point of dust removing units in the ash cycle, that determines each point of dust removing units unloads the grey time.
Alternatively, the dust settling speed of the described each point of dust removing units obtained in sintering electric cleaner comprises:
Obtain total except dust quantity in Preset Time of described sintering electric cleaner;
Obtain each point of dust removing units in described sintering electric cleaner and the first point of dust removing units relative ratio except dust quantity;
According to described each point of dust removing units and first point of dust removing units except the relative ratio of dust quantity, determine the dedusting coefficient of described first point of dust removing units, described dedusting coefficient is that described first point of dust removing units is except dust quantity and total ratio except dust quantity;
By described total dedusting coefficient except dust quantity and described first point of dust removing units, determine first point of dust removing units in Preset Time first except dust quantity;
By described first except dust quantity and Preset Time, determine the first dust settling speed of described first point of dust removing units;
Remove the relative ratio of dust quantity and described first dust settling speed by described each point of dust removing units and first point of dust removing units, determine the dust settling speed of described each point of dust removing units.
Alternatively, described total the remove dust quantity of sintering electric cleaner in preset time period that obtain comprises:
When detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except starting point moment of dust quantity;
Preset after the production time through first, when again detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except finish time of dust quantity;
Calculate from the described starting point moment to described total finish time except dust quantity always except dust quantity, the total of described sintering electric cleaner removes dust quantity.
Alternatively, described detection described sintering electric cleaner enters hole capital after selling all securities and unloads grey state and comprise:
Whether each point of dust removing units detected successively in described sintering electric cleaner enters hole capital after selling all securities and unloads grey state, when each point of dust removing units all enter hole capital after selling all securities unload grey state time, then determine that described sintering electric cleaner enters hole capital after selling all securities and unloads grey state.
Alternatively, point dust removing units in described detection described sintering electric cleaner enters hole capital after selling all securities and unloads grey state and comprise:
Detect the flow value of the weighing unit in described sintering electric cleaner, the specified ratio unloading grey flow and preset ratio coefficient of described flow value and described point of dust removing units is compared, when described flow value is less than the described specified ratio unloading grey flow and preset ratio coefficient, and the duration is when being greater than preset durations, judge that a described point dust removing units enters hole capital after selling all securities and unloads grey state.
Alternatively, describedly determine that the method for unloading grey sequential upgrades in predetermined period.
Present invention also offers a kind of device determining to unload grey sequential, comprising:
First acquiring unit, for obtaining the dust settling speed of each point of dust removing units in sintering electric cleaner;
First computing unit, for by the first dust settling speed of first point of dust removing units in described each point of dust removing units and the dischargeable capacity of described first point of dust removing units, the relation of the dischargeable capacity of described first point of dust removing units is no more than unloading the sedimentation total amount in the ash cycle according to first point of dust removing units, that determines described sintering electric cleaner unloads the ash cycle, described first point of dust removing units is the unit that in described sintering electric cleaner, dust settling speed is the fastest, the dischargeable capacity of described first point of dust removing units is high between described first point of dust removing units, volumetric values between low stuff level switch,
Second computing unit, for unload described in passing through the ash cycle, the dust settling speed of each point of dust removing units and described sintering electric cleaner unload grey speed, according to described each point of dust removing units unloading the relation of dust settling amount of unloading ash capacity and described each point of dust removing units in the ash cycle, that determines each point of dust removing units unloads the grey time.
Alternatively, described first acquiring unit comprises:
Second acquisition unit, for obtaining total except dust quantity in Preset Time of described sintering electric cleaner;
3rd acquiring unit, for obtaining each point of dust removing units in described sintering electric cleaner and the first point of dust removing units relative ratio except dust quantity;
3rd computing unit, for according to described each point of dust removing units and first point of dust removing units except the relative ratio of dust quantity, determine the dedusting coefficient of described first point of dust removing units, described dedusting coefficient is that described first point of dust removing units is except dust quantity and total ratio except dust quantity;
4th computing unit, for by described total dedusting coefficient except dust quantity and described first point of dust removing units, determine first point of dust removing units in Preset Time first except dust quantity;
5th computing unit, for removing dust quantity and Preset Time by described first, determines the first dust settling speed of described first point of dust removing units;
6th computing unit, for removing the relative ratio of dust quantity and described first dust settling speed by described each point of dust removing units and first point of dust removing units, determines the dust settling speed of described each point of dust removing units.
Alternatively, described second acquisition unit comprises:
First detecting unit, for when detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except starting point moment of dust quantity;
Second detecting unit, for presetting after the production time through first, when again detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except finish time of dust quantity;
To weigh summing elements, for calculating from described total starting point moment to described total finish time except dust quantity except dust quantity, described sintering electric cleaner total except dust quantity.
Alternatively, described first detecting unit and described second detecting unit enter hole capital after selling all securities and unload grey state for detecting described sintering electric cleaner and comprise:
Described first detecting unit and described second detecting unit specifically for, whether each point of dust removing units detected successively in described sintering electric cleaner enters hole capital after selling all securities and unloads grey state, when each point of dust removing units all enter hole capital after selling all securities unload grey state time, then determine that described sintering electric cleaner enters hole capital after selling all securities and unloads grey state.
Alternatively, whether described first detecting unit and described second detecting unit enter hole capital after selling all securities for each point of dust removing units detected in described sintering electric cleaner and unload grey state and comprise:
Described first detecting unit and described second detecting unit specifically for, detect the flow value of the weighing unit in described sintering electric cleaner, the specified ratio unloading grey flow and preset ratio coefficient of described flow value and described point of dust removing units is compared, when described flow value is less than the described specified ratio unloading grey flow and preset ratio coefficient, and the duration is when being greater than preset durations, judge that a described point dust removing units enters hole capital after selling all securities and unloads grey state.
Provided by the present inventionly determine the method and the device that unload grey sequential, the method is no more than the dischargeable capacity of first point of dust removing units and each point of dust removing units meets the relation of dynamic equilibrium at the unloading ash capacity unloaded in the ash cycle and its dust settling amount according to first point of dust removing units unloading the sedimentation total amount in the ash cycle, by obtaining the dust settling speed of each point of dust removing units in sintering electric cleaner, unload grey speed in conjunction with described sintering electric cleaner, that determines ash cycle of unloading of described sintering electric cleaner and each point of dust removing units unloads the ash time.Visible, what the present invention can determine to unload ash cycle and each point of dust removing units according to the actual dust settling speed of sintering electric cleaner unloads the ash time, what sintering electric cleaner is obtained more adapt to practical condition unloads grey sequential, thus avoids in prior art unreasonable and cause stuff level switch frequent operation, hold flimsy problem owing to unloading grey sequential.
Accompanying drawing explanation
Fig. 1 is electric cleaner and ash-transmission system schematic diagram thereof;
Fig. 2 is that three electric field electric cleaners unload the distribution of ash control time and electric field ash-storing bin material level relation schematic diagram thereof;
Fig. 3 is that three electric field electric cleaner stuff level switch participate in controlling and the relation schematic diagram unloading grey sequential;
Fig. 4 is the flow chart determining a kind of detailed description of the invention of the method for unloading grey sequential provided by the present invention;
Fig. 5 is the flow chart determining step 101 implementation in the another kind of detailed description of the invention of the method for unloading grey sequential provided by the present invention;
Fig. 6 is the flow chart determining step 201 implementation in the another kind of detailed description of the invention of the method for unloading grey sequential provided by the present invention;
Fig. 7 is the flow chart determining another detailed description of the invention of the method for unloading grey sequential provided by the present invention;
Fig. 8 is the structural representation determining another detailed description of the invention of the method for unloading grey sequential provided by the present invention;
Fig. 9 is the flow chart determining step 401 implementation method in another detailed description of the invention of the method for unloading grey sequential provided by the present invention;
Figure 10 is the structured flowchart determining a kind of detailed description of the invention of the device unloading grey sequential provided by the present invention;
Figure 11 is the structured flowchart determining the first acquiring unit 100 in a kind of detailed description of the invention of the device unloading grey sequential provided by the present invention;
Figure 12 is the structured flowchart determining second acquisition unit 101 in a kind of detailed description of the invention of the device unloading grey sequential provided by the present invention.
Detailed description of the invention
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of method and the device of determining to unload grey sequential, generally, the sequencing that sintering electric cleaner each point of dust removing units unloads ash fixes, the determination of unloading grey sequential be in the present invention mainly determine this sintering electric cleaner each point of dust removing units unload the ash time.
As shown in Figure 4, this embodiment specifically comprises the following steps a kind of detailed description of the invention determining the method for unloading grey sequential provided by the invention:
Step 101: the dust settling speed obtaining each point of dust removing units in sintering electric cleaner;
Step 102: by the first dust settling speed of first point of dust removing units in described each point of dust removing units and the dischargeable capacity of described first point of dust removing units, the relation of the dischargeable capacity of described first point of dust removing units is no more than unloading the sedimentation total amount in the ash cycle according to first point of dust removing units, that determines described sintering electric cleaner unloads the ash cycle, described first point of dust removing units is the unit that in described sintering electric cleaner, dust settling speed is the fastest, the dischargeable capacity of described first point of dust removing units is high between described first point of dust removing units, volumetric values between low stuff level switch,
Step 103: by described unload the ash cycle, the dust settling speed of each point of dust removing units and described sintering electric cleaner unload grey speed, according to described each point of dust removing units unloading the relation of dust settling amount of unloading ash capacity and described each point of dust removing units in the ash cycle, that determines each point of dust removing units unloads the grey time.
Provided by the present inventionly determine the method for unloading grey sequential, the dischargeable capacity of first point of dust removing units is no more than and each point of dust removing units meets the relation of dynamic equilibrium at the unloading ash capacity unloaded in the ash cycle and its dust settling amount unloading the sedimentation total amount in the ash cycle according to first point of dust removing units, by obtaining the dust settling speed of each point of dust removing units in sintering electric cleaner, unload grey speed in conjunction with described sintering electric cleaner, that determines ash cycle of unloading of described sintering electric cleaner and each point of dust removing units unloads the ash time.Visible, what the present invention can determine to unload ash cycle and each point of dust removing units according to the actual dust settling speed of sintering electric cleaner unloads the ash time, what sintering electric cleaner is obtained more adapt to practical condition unloads grey sequential, thus avoids in prior art unreasonable and cause stuff level switch frequent operation, hold flimsy problem owing to unloading grey sequential.
The invention provides a kind of another embodiment determining the method for unloading grey sequential, as shown in Figure 5, the concrete execution step of this embodiment and the embodiment shown in Fig. 4 unanimous on the whole, wherein, step 101 embodiment illustrated in fig. 4 preferably can adopt following steps to realize:
Step 201: obtain total except dust quantity in preset time period of sintering electric cleaner;
Step 202: obtain each point of dust removing units in described sintering electric cleaner and the first point of dust removing units relative ratio except dust quantity;
Step 203: according to described each point of dust removing units and first point of dust removing units except the relative ratio of dust quantity, determine the dedusting coefficient of described first point of dust removing units, described dedusting coefficient is that described first point of dust removing units is except dust quantity and total ratio except dust quantity;
Step 204: by described total dedusting coefficient except dust quantity and described first point of dust removing units, determine first point of dust removing units in Preset Time first except dust quantity;
Step 205: by described first except dust quantity and Preset Time, determine the first dust settling speed of described first point of dust removing units;
Step 206: remove the relative ratio of dust quantity and described first dust settling speed by described each point of dust removing units and first point of dust removing units, determine the dust settling speed of described each point of dust removing units.
In the above-described embodiments, the specific implementation of step 201 as shown in Figure 6, comprising:
Step 301: when detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except starting point moment of dust quantity;
Whether described detection sintering electric cleaner enters hole capital after selling all securities is unloaded grey state and specifically can adopt following process implementation: whether each point of dust removing units detected successively in described sintering electric cleaner enters hole capital after selling all securities and unload grey state, when each point of dust removing units all enter hole capital after selling all securities unload grey state time, then determine that described sintering electric cleaner enters hole capital after selling all securities and unloads grey state.
Wherein, point dust removing units detected in described sintering electric cleaner enters hole capital after selling all securities and unloads grey state and can specifically comprise again: the flow value detecting the weighing unit in described sintering electric cleaner, the specified ratio unloading grey flow and preset ratio coefficient of described flow value and described point of dust removing units is compared, when described flow value is less than the described specified ratio unloading grey flow and preset ratio coefficient, and the duration is when being greater than preset durations, judge that a described point dust removing units enters hole capital after selling all securities and unloads grey state.
Step 302: preset after the production time through first, when again detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except finish time of dust quantity;
Step 303: calculate from the described starting point moment to described total finish time except dust quantity always except dust quantity, the total of described sintering electric cleaner removes dust quantity.
It is pointed out that and provided by the present inventionly determine that the method for unloading grey sequential upgrades in predetermined period.This is mainly due in actual production process, and the operating mode of sintering electric cleaner is in change, and the state of production, also in change, unloaded grey sequential before one week accurately, and crossing may not be accurate once week.Therefore, electric cleaner at regular intervals (such as once about week) need to carry out automatic calibration.
The method of grey sequential is unloaded in the determination that the embodiment of the present invention provides, the dischargeable capacity of first point of dust removing units is no more than and each point of dust removing units meets the relation of dynamic equilibrium at the unloading ash capacity unloaded in the ash cycle and its dust settling amount unloading the sedimentation total amount in the ash cycle according to first point of dust removing units, by obtaining the dust settling speed of each point of dust removing units in sintering electric cleaner, unload grey speed in conjunction with described sintering electric cleaner, that determines ash cycle of unloading of described sintering electric cleaner and each point of dust removing units unloads the ash time.Visible, what the present invention can determine to unload ash cycle and each point of dust removing units according to the actual dust settling speed of sintering electric cleaner unloads the ash time, what sintering electric cleaner is obtained more adapt to practical condition unloads grey sequential, thus avoids in prior art unreasonable and cause stuff level switch frequent operation, hold flimsy problem owing to unloading grey sequential.
As shown in Figure 7, the invention provides a kind of another embodiment determining the method for unloading grey sequential, in the present embodiment, for the electric cleaner of SINTERING PRODUCTION system, it typically is many electric fields electric cleaner, there is many electric field structures.The present embodiment comprises the following steps:
Step 401: obtain total except dust quantity in Preset Time of electric cleaner;
Under normal circumstances, electric cleaner ash-transmission system only has a unloading valve job at one time, and the conveying capacity of scraper plate unloads grey requirement at full capacity for meeting a unloading valve.In total scrapper conveyor downstream of electric cleaner equipment, belt conveyer scale 10 is set, as shown in Figure 8, ash is unloaded for HC1 electric field ash-storing bin, when storing dedusting ash in HC1 electric field ash-storing bin, unloading valve F1 works, and dedusting ash enters total ash-storing bin 08 through unloading valve 022, scraper ash-transmission machine 05, total scrapper conveyor 06, closed belt scale 10, bucket elevator 07.Weighing unit belt conveyer scale 10 can detect in the unit interval dust weight flowing through closed belt scale.
Suppose that the time that dedusting ash is transported to closed belt scale 10 needs from electric field ash-storing bin 021 is Δ t, do not consider the dust weight of electric precipitation pole plate adhesion, total the remove dust quantity of electric cleaner in t1 to t2 Preset Time meets following relational expression:
G
(t1, t2)=G
scale (t1+ Δ t, t2+ Δ t)+ H
t2-H
t1(1)
Wherein, H
t1for the total storage ash quantity in t1 moment electric cleaner each electric field ash-storing bin; H
t2for the total storage ash quantity in t2 moment electric cleaner each electric field ash-storing bin; G
scale (t1+ Δ t, t2+ Δ t)for the data obtained measured by corresponding period closed belt scale 10.
Limit by cost and electric cleaner structure, the electric field ash-storing bin of electric cleaner can not arrange loading component, and it is a time dependent amount that the electric field ash-storing bin of electric cleaner always stores up ash quantity, the total storage ash quantity H in t1 and t2 moment electric cleaner each electric field ash-storing bin
t1with H
t2actual value be difficult to obtain.Therefore, in the present embodiment, selection electric field ash-storing bin is t1 moment and t2 moment, the i.e. H of hole capital after selling all securities
t1=H
t2=0, closed belt scale 10 just can be utilized to acquire the total of electric cleaner in Preset Time and to remove dust quantity G
(t1, t2).
Step 402: obtain each electric field and the dedusting ratio of the first electric field except dust quantity in described electric cleaner;
Step 403: according to described each electric field and the dedusting ratio of the first electric field except dust quantity, determine the dedusting coefficient of described first electric field, described dedusting coefficient is that described first electric field is except dust quantity and total ratio except dust quantity;
Electric cleaner always has following relation except dust quantity and each electric field remove dust quantity:
G
(t1,t2)＝G1
(t1,t2)+G2
(t1,t2)+…+Gn
(t1,t2)(2)
Wherein, G
(t1, t2)for total except dust quantity from the t1 moment to the t2 moment of electric cleaner, units/kg; G1
(t1, t2)for electric cleaner first electric field from the t1 moment to the t2 moment except dust quantity, units/kg; G2
(t1, t2)for electric cleaner second electric field from the t1 moment to the t2 moment except dust quantity, units/kg; Gn
(t1, t2)for electric cleaner n-th electric field from the t1 moment to the t2 moment except dust quantity, units/kg; N is the electric field quantity of electric cleaner.
The removing dust quantity and can be expressed as following relation except dust quantity and the first electric field of each electric field:
Gx
(t1,t2)＝k
x×G1
(t1,t2)(3)
Wherein, G1
(t1, t2)for electric cleaner first electric field from the t1 moment to the t2 moment except dust quantity, units/kg; Gx
(t1, t2)for electric cleaner xth electric field from the t1 moment to the t2 moment except dust quantity, units/kg; k
xfor electric cleaner xth electric field and the dedusting ratio of the first electric field; X is the integer between 2-n, and n is Electric Field in ESP quantity.
In described electric cleaner, each electric field can be considered as constant with the first electric field except the dedusting ratio of dust quantity, acquires in practice by methods such as experiments.
Can obtain in conjunction with formula (2) and (3):
G
(t1,t2)＝(1+k
2+…+k
n)×G1
(t1,t2)＝k×G1
(t1,t2)(4)
Wherein, k=(1+k
2+ ... + k
n) represent the dedusting coefficient of the first electric field, i.e. the first electric field and total ratio except dust quantity.
According to the dedusting ratio acquired, determine the dedusting coefficient k of the first electric field.
Step 404: by described total dedusting coefficient except dust quantity and described first electric field, determine the first electric field in Preset Time first except dust quantity;
Determined total except dust quantity G according to step 401
(t1, t2)and the dedusting coefficient k of determined first electric field of step 403, in conjunction with formula (4), determine the first electric field in described Preset Time first except dust quantity G1
(t1, t2).
Step 405: by described first except dust quantity and Preset Time, determine the first dust settling speed of described first electric field;
According to determine in step 404 in Preset Time (t2-t1) the first electric field first except dust quantity G1
(t1, t2), in conjunction with formula J1
v=G1
(t1, t2)/ (t2-t1), determines the first dust settling speed J1 of the first electric field
v;
Step 406: remove the dedusting ratio of dust quantity and described first dust settling speed by described each electric field except dust quantity and the first electric field, determine the dust settling speed of described each electric field;
K is compared with the dedusting that the first electric field removes dust quantity according to each electric field that step 403 gets
xand the determined first dust settling speed J1 of step 405
v, in conjunction with formula Jx
v=k
x× J1
v, determine the dust settling speed Jx of each electric field
v.
Step 407: by the first dust settling speed of the first electric field in electric cleaner and the dischargeable capacity of described first electric field, that determines described electric cleaner unloads the ash cycle;
In reality, the dust quantity that removes of each electric field of electric cleaner has very big difference, generally, because the dust settling speed of the first electric field is the fastest, therefore to the ash cycle of unloading of head electric cleaner play a decisive role be electric cleaner first electric field dust settling speed with unload grey speed.
The dischargeable capacity of the first electric field should volumetric values (M between the height stuff level switch of described first electric field
h-M
l), wherein M
hdust weight is stored, units/kg for corresponding during electric cleaner 1 electric field ash-storing bin high charge level; M
lcorresponding dedusting dust weight during material level low for electric cleaner 1 electric field ash-storing bin, units/kg.
Unload in the ash cycle at one, the utilization realizing dust cabin volume should be ensured, also will avoid touching stuff level switch.Therefore, the restriction of ash cycle of unloading by the ash-storing bin volume of the first electric field of electric cleaner, should meet:
T×J1
v＝p×(M
H-M
L) (5)
Wherein, p is Electric Field in ESP ash-storing bin usage factor, and usual value is 0.8-0.95, only need meet the first electric field is less than or equal to its ash-storing bin volume in the dust settling amount that was unloaded in the ash cycle.
According to the determined first dust settling speed J1 of step 405
vand first dischargeable capacity of electric field, in conjunction with formula (5), that determines electric cleaner unloads grey cycle T.
Step 408: the relation meeting dynamic equilibrium according to each electric field of electric cleaner at the unloading ash capacity unloaded in the ash cycle and its dust settling amount, by described unload the ash cycle, the dust settling speed of each electric field and each electric field ash-storing bin unload grey speed, that determines each electric field unloads the ash time.
One accurately electric precipitation unload in grey sequential, each electric field of electric cleaner one unload ash the cycle in dust settling total amount should meet dynamic equilibrium with the grey total amount of unloading of its ash-storing bin unloading valve, namely should meet:
T×Jz
v＝T
z×F
v(6)
Wherein, Jz
vfor electric cleaner z electric field dust settling speed, units/kg/s; T
zfor electric cleaner z electric field one unload ash the cycle in unload ash the time, unit s; F
vfor Electric Field in ESP unloading valve flow, units/kg/s; Z is the number between 1-n, and n is Electric Field in ESP quantity.
The unloading valve multiselect Double-deck cinder discharge valve of electric precipitation or star-shaped dust-discharging valve, this unloading valve is driven by motor, and it is relevant with motor speed that it unloads grey speed, acquires by actual.
By the determined dust settling speed Jx unloading grey cycle T, the determined each electric field of step 406 of step 407
vand described sintering electric cleaner unload grey speed F
v, in conjunction with formula (6), that determines each electric field unloads ash time T
z.
Step 409: unloading the grey time and unloading the relation in ash cycle according to described each electric field, determines the time of electric cleaner dust settling.
The unloading between ash time and dust settling time of grey cycle T and each electric field of unloading of electric cleaner meets following relation:
T＝T
0+T
1+T
2+…+T
n(7)
By step 407 determined unload grey cycle T and the determined each electric field of step 408 unload ash time T
z, in conjunction with formula 7, determine electric cleaner dust settling time T
0.
In the above-described embodiments, step 401 obtains total the remove dust quantity of electric cleaner in Preset Time can preferably adopt following method step, as shown in Figure 9:
Step 501: when detect electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to closed belt scale and measures this always except the starting point moment of dust quantity;
Step 502: preset after the production time through first, when again detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to closed belt scale and measures this always except the finish time of dust quantity;
Step 503: calculate from the described starting point moment to described total finish time except dust quantity always except dust quantity, the total of described sintering electric cleaner removes dust quantity.
In the present embodiment, obtain total in Preset Time of electric cleaner except dust quantity before, all electric field ash-storing bin amount of ram dirt ashes of electric cleaner first to be detected.Its method is:
Whether each electric field unloading valve detecting electric cleaner successively enters hole capital after selling all securities is unloaded grey state, when each electric field unloading valve all enter hole capital after selling all securities unload grey state time, then determine that this electric cleaner enters hole capital after selling all securities and unloads grey state.
In practical application, because the ability of ash-transmission system scrapper conveyor 05 in electric cleaner shown in Fig. 8 limits, a unloading valve is only allowed to unload ash at full capacity, if two unloading valves 022 unload ash simultaneously, just may there is the overladen fault of scrapper conveyor 05, so under hole capital after selling all securities unloads grey pattern, ash must be unloaded by first F1, until F1 by after emptying for dedusting ash in its corresponding electric field ash-storing bin 021, F1 continues to run, now because 1 electric field ash-storing bin hole capital after selling all securities, dedusting ash is with falling with walking, therefore it is very low that now F1 unloading valve actual unloads grey flow, F2 unloading valve can be allowed to start to unload ash, now F1, F2 unloading valve works simultaneously, F2 is for unload ash at full capacity, F1 is that hole capital after selling all securities low discharge unloads ash, scrapper conveyor 05 overload can not be caused to occur, the principle that all the other unloading valves add work is similar with it.
Finally enter after hole capital after selling all securities unloads grey pattern, in electric cleaner ash discharging system, all electric field ash-storing bins are all without depositing ash, and each ash-storing bin unloading valve of electric cleaner works simultaneously, each electric field remove dedusting ash and all enter total ash-storing bin by dust induction system.
Whether described detection electric field unloading valve enters the method that hole capital after selling all securities unloads grey state specifically can be adopted with the following method:
Detect the changes in flow rate of closed belt scale 10, the flow value detected unloaded grey flow value compare with specified, when described flow value be less than described specified unload grey flow value time, judge describedly to divide a dust removing units to enter hole capital after selling all securities to unload grey state.
In real system, the flow of closed belt scale 10 is roughly the specified of unloading valve and unloads grey flow L1; When in HC1 electric field ash-storing bin, all dust are all emptying, fall into the dust of ash-storing bin when unloading valve discharges electric cleaner work, now the flow value PL1 of closed belt scale 10 is the dust settling flow value CL1 of HC1 electric field ash-storing bin.
The dust settling flow CL1 of HC1 electric field ash-storing bin and the specified of unloading valve F1 are unloaded grey flow L1 and there is following mathematical relationship: L
1>M1 × CL
1.Wherein, L1 is that the specified of unloading valve unloads grey flow, units/kg/s; CL1 is the dust settling flow of HC1 electric field ash-storing bin, units/kg/s; M1 is proportionality coefficient, and Typical ranges is 3-10.
In the present embodiment, detect a certain electric field unloading valve whether to enter the method that hole capital after selling all securities unloads grey state and specifically can adopt the flow value PL1 detecting closed belt scale 10, judge the size of its value PL1 and L1/M1 value, when PL1 is less than the value of L1/M1, judge that this electric field unloading valve enters hole capital after selling all securities and unloads grey state.
It is pointed out that in the present embodiment and adopt the method for installing closed belt scale 10 after total scrapper conveyor to realize its object of weighing, loading component can also be installed at total ash-storing bin equipotential in actual applications.In addition, detect electric cleaner and whether enter the method that hole capital after selling all securities unloads grey state and be not limited to the mode described in the present embodiment yet, also can adopt other mode, this does not affect realization of the present invention.
The method of grey sequential is unloaded in the determination that the embodiment of the present invention provides, the dischargeable capacity of the first electric field is no more than and each electric field meets the relation of dynamic equilibrium at the unloading ash capacity unloaded in the ash cycle and its dust settling amount unloading the sedimentation total amount in the ash cycle according to the first electric field in electric cleaner, by obtaining the dust settling speed of each electric field in electric cleaner, unload grey speed in conjunction with it, determine electric cleaner unload ash the cycle and each electric field unload ash the time.Visible, present invention achieves the change automatically adapting to production and equipment, electric cleaner is obtained and unloads grey sequential accurately, avoid in prior art unreasonable and cause stuff level switch frequent operation, hold flimsy problem owing to unloading grey sequential, thus reach and reduce electric cleaner fault rate, reduce the object that electric cleaner leaks out, reduces the damage of electric cleaner stuff level switch, save production cost.
Present invention also offers a kind of device determining to unload grey sequential, as shown in Figure 10, this device comprises:
First acquiring unit 100, for obtaining the dust settling speed of each point of dust removing units in sintering electric cleaner;
First computing unit 200, for being no more than the relation of the dischargeable capacity of described first point of dust removing units according to first point of dust removing units unloading the sedimentation total amount in the ash cycle, by the first dust settling speed of first point of dust removing units in described each point of dust removing units and the dischargeable capacity of described first point of dust removing units, that determines described sintering electric cleaner unloads the ash cycle, described first point of dust removing units is the unit that in described sintering electric cleaner, dust settling speed is the fastest, the dischargeable capacity of described first point of dust removing units is high between described first point of dust removing units, volumetric values between low stuff level switch,
Second computing unit 300, for according to the relation of dust settling amount of described each point of dust removing units at the unloading ash capacity unloaded in the ash cycle and described each point of dust removing units, by described unload the ash cycle, the dust settling speed of each point of dust removing units and described sintering electric cleaner unload grey speed, that determines each point of dust removing units unloads the ash time.
Wherein, described first acquiring unit 100 can specifically comprise:
Second acquisition unit 101, for obtaining total except dust quantity in Preset Time of described sintering electric cleaner;
3rd acquiring unit 102, for obtaining each point of dust removing units in described sintering electric cleaner and the first point of dust removing units relative ratio except dust quantity;
3rd computing unit 103, for according to described each point of dust removing units and the first point of dust removing units relative ratio except dust quantity, determine the dedusting coefficient of described first point of dust removing units, described dedusting coefficient is that described first point of dust removing units is except dust quantity and total ratio except dust quantity;
4th computing unit 104, for by described total dedusting coefficient except dust quantity and described first point of dust removing units, determine first point of dust removing units in Preset Time first except dust quantity;
5th computing unit 105, for removing dust quantity and Preset Time by described first, determines the first dust settling speed of described first point of dust removing units;
6th computing unit 106, for removing the relative ratio of dust quantity and described first dust settling speed by described each point of dust removing units and first point of dust removing units, determines the dust settling speed of described each point of dust removing units.
As shown in figure 12, as above second acquisition unit 101 can further include:
First detecting unit 1011, for when detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except starting point moment of dust quantity;
Second detecting unit 1012, for presetting after the production time through first, when again detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except finish time of dust quantity;
To weigh summing elements 1013, for calculating from described total starting point moment to described total finish time except dust quantity except dust quantity, described sintering electric cleaner total except dust quantity.
Alternatively, described first detecting unit and described second detecting unit specifically for, detect the flow value of the weighing unit in described sintering electric cleaner, the specified ratio unloading grey flow and preset ratio coefficient of described flow value and described point of dust removing units is compared, when described flow value is less than the described specified ratio unloading grey flow and preset ratio coefficient, and the duration is when being greater than preset durations, judge that a described point dust removing units enters hole capital after selling all securities and unloads grey state.
Alternatively, whether described first detecting unit and described second detecting unit each point of dust removing units detected successively in described sintering electric cleaner enter hole capital after selling all securities is unloaded grey state, when each point of dust removing units all enter hole capital after selling all securities unload grey state time, then determine that described sintering electric cleaner enters hole capital after selling all securities and unloads grey state.
The device of grey sequential is unloaded in the determination that the present embodiment provides, the dischargeable capacity of first point of dust removing units is no more than and each point of dust removing units meets the relation of dynamic equilibrium at the unloading ash capacity unloaded in the ash cycle and its dust settling amount unloading the sedimentation total amount in the ash cycle according to first point of dust removing units, by obtaining the dust settling speed of each point of dust removing units in sintering electric cleaner, unload grey speed in conjunction with described sintering electric cleaner, that determines ash cycle of unloading of described sintering electric cleaner and each point of dust removing units unloads the ash time.Visible, what the present invention can determine to unload ash cycle and each point of dust removing units according to the actual dust settling speed of sintering electric cleaner unloads the ash time, what sintering electric cleaner is obtained more adapt to practical condition unloads grey sequential, thus avoids in prior art unreasonable and cause stuff level switch frequent operation, hold flimsy problem owing to unloading grey sequential.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (11)
1. determine a method of unloading grey sequential, it is characterized in that, comprising:
Obtain the dust settling speed of each point of dust removing units in sintering electric cleaner;
By the first dust settling speed of first point of dust removing units in described each point of dust removing units and the dischargeable capacity of described first point of dust removing units, the relation of the dischargeable capacity of described first point of dust removing units is no more than unloading the sedimentation total amount in the ash cycle according to first point of dust removing units, that determines described sintering electric cleaner unloads the ash cycle, described first point of dust removing units is the unit that in described sintering electric cleaner, dust settling speed is the fastest, and the dischargeable capacity of described first point of dust removing units is the volumetric values between described first point of high and low stuff level switch of dust removing units;
By described unload the ash cycle, the dust settling speed of each point of dust removing units and described sintering electric cleaner unload grey speed, according to described each point of dust removing units unloading the relation of dust settling amount of unloading ash capacity and described each point of dust removing units in the ash cycle, that determines each point of dust removing units unloads the grey time.
2. determine the method for unloading grey sequential as claimed in claim 1, it is characterized in that, the dust settling speed of the described each point of dust removing units obtained in sintering electric cleaner comprises:
Obtain total except dust quantity in Preset Time of described sintering electric cleaner;
Obtain each point of dust removing units in described sintering electric cleaner and the first point of dust removing units relative ratio except dust quantity;
According to described each point of dust removing units and first point of dust removing units except the relative ratio of dust quantity, determine the dedusting coefficient of described first point of dust removing units, described dedusting coefficient is that described first point of dust removing units is except dust quantity and total ratio except dust quantity;
By described total dedusting coefficient except dust quantity and described first point of dust removing units, determine first point of dust removing units in Preset Time first except dust quantity;
By described first except dust quantity and Preset Time, determine the first dust settling speed of described first point of dust removing units;
Remove the relative ratio of dust quantity and described first dust settling speed by described each point of dust removing units and first point of dust removing units, determine the dust settling speed of described each point of dust removing units.
3. determine the method for unloading grey sequential as claimed in claim 2, it is characterized in that, described total the remove dust quantity of sintering electric cleaner in preset time period that obtain comprises:
When detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except starting point moment of dust quantity;
Preset after the production time through first, when again detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except finish time of dust quantity;
Calculate from the described starting point moment to described total finish time except dust quantity always except dust quantity, the total of described sintering electric cleaner removes dust quantity.
4. determine the method for unloading grey sequential as claimed in claim 3, it is characterized in that, described detection described sintering electric cleaner enters hole capital after selling all securities and unloads grey state and comprise:
Whether each point of dust removing units detected successively in described sintering electric cleaner enters hole capital after selling all securities and unloads grey state, when each point of dust removing units all enter hole capital after selling all securities unload grey state time, then determine that described sintering electric cleaner enters hole capital after selling all securities and unloads grey state.
5. determine the method for unloading grey sequential as claimed in claim 4, it is characterized in that, point dust removing units in described detection described sintering electric cleaner enters hole capital after selling all securities and unloads grey state and comprise:
Detect the flow value of the weighing unit in described sintering electric cleaner, the specified ratio unloading grey flow and preset ratio coefficient of described flow value and described point of dust removing units is compared, when described flow value is less than the described specified ratio unloading grey flow and preset ratio coefficient, and the duration is when being greater than preset durations, judge that a described point dust removing units enters hole capital after selling all securities and unloads grey state.
6. determine the method for unloading grey sequential as claimed in claim 1, it is characterized in that, describedly determine that the method for unloading grey sequential upgrades in predetermined period.
7. determine the device unloading grey sequential, it is characterized in that, comprising:
First acquiring unit, for obtaining the dust settling speed of each point of dust removing units in sintering electric cleaner;
First computing unit, for by the first dust settling speed of first point of dust removing units in described each point of dust removing units and the dischargeable capacity of described first point of dust removing units, the relation of the dischargeable capacity of described first point of dust removing units is no more than unloading the sedimentation total amount in the ash cycle according to first point of dust removing units, that determines described sintering electric cleaner unloads the ash cycle, described first point of dust removing units is the unit that in described sintering electric cleaner, dust settling speed is the fastest, the dischargeable capacity of described first point of dust removing units is high between described first point of dust removing units, volumetric values between low stuff level switch,
Second computing unit, for unload described in passing through the ash cycle, the dust settling speed of each point of dust removing units and described sintering electric cleaner unload grey speed, according to described each point of dust removing units unloading the relation of dust settling amount of unloading ash capacity and described each point of dust removing units in the ash cycle, that determines each point of dust removing units unloads the grey time.
8. determine the device unloading grey sequential as claimed in claim 7, it is characterized in that, described first acquiring unit comprises:
Second acquisition unit, for obtaining total except dust quantity in Preset Time of described sintering electric cleaner;
3rd acquiring unit, for obtaining each point of dust removing units in described sintering electric cleaner and the first point of dust removing units relative ratio except dust quantity;
3rd computing unit, for according to described each point of dust removing units and first point of dust removing units except the relative ratio of dust quantity, determine the dedusting coefficient of described first point of dust removing units, described dedusting coefficient is that described first point of dust removing units is except dust quantity and total ratio except dust quantity;
4th computing unit, for by described total dedusting coefficient except dust quantity and described first point of dust removing units, determine first point of dust removing units in Preset Time first except dust quantity;
5th computing unit, for removing dust quantity and Preset Time by described first, determines the first dust settling speed of described first point of dust removing units;
6th computing unit, for removing the relative ratio of dust quantity and described first dust settling speed by described each point of dust removing units and first point of dust removing units, determines the dust settling speed of described each point of dust removing units.
9. determine the device unloading grey sequential as claimed in claim 8, it is characterized in that, described second acquisition unit comprises:
First detecting unit, for when detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except starting point moment of dust quantity;
Second detecting unit, for presetting after the production time through first, when again detect described sintering electric cleaner enter hole capital after selling all securities unload grey state time, current time is set to the described sintering electric cleaner of metering this always except finish time of dust quantity;
To weigh summing elements, for calculating from described total starting point moment to described total finish time except dust quantity except dust quantity, described sintering electric cleaner total except dust quantity.
10. determine the device unloading grey sequential as claimed in claim 9, it is characterized in that, described first detecting unit and described second detecting unit enter hole capital after selling all securities and unload grey state for detecting described sintering electric cleaner and comprise:
Described first detecting unit and described second detecting unit specifically for, whether each point of dust removing units detected successively in described sintering electric cleaner enters hole capital after selling all securities and unloads grey state, when each point of dust removing units all enter hole capital after selling all securities unload grey state time, then determine that described sintering electric cleaner enters hole capital after selling all securities and unloads grey state.
11. determine the device unloading grey sequential as claimed in claim 10, it is characterized in that, whether described first detecting unit and described second detecting unit enter hole capital after selling all securities for each point of dust removing units detected in described sintering electric cleaner is unloaded grey state and comprise:
Described first detecting unit and described second detecting unit specifically for, detect the flow value of the weighing unit in described sintering electric cleaner, the specified ratio unloading grey flow and preset ratio coefficient of described flow value and described point of dust removing units is compared, when described flow value is less than the described specified ratio unloading grey flow and preset ratio coefficient, and the duration is when being greater than preset durations, judge that a described point dust removing units enters hole capital after selling all securities and unloads grey state.
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| CN104437877B (en) | 2017-01-25 |
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