CN103282095B - Dust collector control system - Google Patents
Dust collector control system Download PDFInfo
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- CN103282095B CN103282095B CN201180048374.5A CN201180048374A CN103282095B CN 103282095 B CN103282095 B CN 103282095B CN 201180048374 A CN201180048374 A CN 201180048374A CN 103282095 B CN103282095 B CN 103282095B
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- filter
- condition
- clean cycle
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- air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
A method of controlling a cleaning cycle of a dust filter system comprising one or more filters, the cleaning cycle having start and stop criterion associated with a characteristic of the dust filter system, the method comprising adjusting at least one of the start and stop criteria in response to a predefined state of the dust filter system being determined.
Description
Technical field
The disclosure relates to a kind of air filtering system, especially relates to a kind of dust-collector and the monitoring and controlling system for dust-collector.
Background technology
Dust-collector uses in the multiple industry such as large workshop (namely school, hospital, the Art Museum), Furniture manufacture, cement, chemistry, food industry in such as mining, pharmacy, power industry, sawmilling, little workshop.In history, in commercial location, being filtered through of air uses washer and deduster.These filters are more suitable in high-temperature service.
Dust-collector can use tubular filter bag or cartridge filter to retain tiny dust granule.A kind of popular filter type is by textile.Fabric filter compared to other filter types dust collect and clean air discharge in there is higher efficiency.Dust-collector operates as having multiple huge vacuum cleaner being called the collecting bag of baghouse.Dust granule is inhaled in textile bags filter and by the wall of textile bags and limits.
In order to make sack with the horizontal filtering of optimum, sack must be regularly cleaned.In order to provide continuous print filtered air, needed to be removed while equipment operation by the dust granule that filter limits.In one approach, this is by shaking filter termly to realize.Filter (such as between every 5 seconds to every 15 seconds) is mechanically shaken, or by air blast by compression.Then dust granule lands and is collected in regularly emptying funnel in below from filter.Owing to shaking the wearing and tearing that filter can be caused unnecessary, therefore avoid too much shake as much as possible.
Summary of the invention
The method of the clean cycle of the filtering dust system that disclosed embodiment provides a kind of control to comprise one or more filter, clean cycle has the entry condition and stop condition that are associated with the feature of filtering dust system, and the method comprises:
In response to by the predetermined state of filtering dust system determined to regulate at least one condition in entry condition and stop condition.
In one form, for the feature of at least one condition in entry condition and stop condition be the pressure differential of one or more filters of the leap filtering dust system detected.
In one form, entry condition is that the pressure differential of crossing over one or more filter has reached the first predetermined value.In one form, stop condition is that the pressure differential of crossing over one or more filter has dropped to lower than the second predetermined value, and described second predetermined value is lower than the first predetermined value.
In one form, the value of at least one condition in entry condition and stop condition in response to former or current clean cycle exceed predetermined value duration regulate.
In one form, starting pressure condition regulates in response to the determination at least one filter of filtration system being reached to predetermined age and/or filtration condition with the value of at least one condition stopped in pressure condition.
In one form, in response to current clean cycle duration exceed predetermined value time adjustment to the value of stop condition, regulate the value of entry condition with predetermined amount.
In one form, the value of at least one condition in entry condition and stop condition increases with fixing amount.In another form, the value of at least one condition in entry condition and stop condition is to depend on that the amount of at least one in life-span of filter, the state of filter, the particle size of material be filtered and system load increases.
In another aspect, disclosed embodiment is provided for the controller of the filtering dust system comprising one or more filter, controller is arranged as implements to have the clean cycle of entry condition and the stop condition be associated with the feature of filtering dust system, and controller is also arranged as determination in response to the predetermined state of filtering dust system to regulate at least one condition in entry condition and stop condition.
In one form, for the feature of at least one condition in entry condition and stop condition be the pressure differential of one or more filters of the leap filtering dust system detected.
In one form, entry condition is that pressure differential has reached the first predetermined value.In one form, stop condition is that pressure differential is reduced to the second predetermined value down, and described second predetermined value is lower than the first predetermined value.
In one form, controller be arranged as in response to former or current clean cycle duration exceed the determination of predetermined value to regulate the value of at least one condition in entry condition and stop condition.
In one form, the value of at least one condition in entry condition and stop condition is regulated in response to the determination one or more filter having been reached to predetermined age and/or filtration condition by controller.
In one form, in response to the value of regulated stop condition, controller is also arranged as the value regulating entry condition with corresponding amount.
In one form, the value of at least one condition in entry condition and stop condition increases fixing amount.
In one form, the value of entry condition and stop condition regulates the amount of at least one depended in life-span of filter, the state of filter, the particle size of material of filtering and system load.
In another aspect, disclosed embodiment provides a kind of controller of the filtering dust system for comprising at least one dust filter, controller is arranged as implements multiple clean cycle within a period of time, clean cycle has the startup threshold value and outage threshold that are associated with the feature of filtering dust system, and controller is also arranged as incrementally increases corresponding startup threshold value and outage threshold within a period of time.
In one form, controller be arranged as in response to by the predetermined state of filtration system determined to implement eachly incrementally to increase.
In one form, predetermined state is duration of current or former clean cycle exceeded predetermined value.In one form, the pressure differential of the one or more filter of measured leap is characterized as.
According on the other hand, disclosed embodiment comprises computer program code, this computer program code implement when being performed by processor according to arbitrary above-mentioned in method.
According to another aspect, disclosed embodiment provides the computer-readable medium of the program code comprising above-mentioned aspect.
According to another aspect, disclosed embodiment provides the data-signal of the program code being loaded with above-mentioned aspect.
Accompanying drawing explanation
Only preferred embodiment exemplarily is now described with reference to the accompanying drawings, in accompanying drawing:
Fig. 1 is the side sectional view of the dust control system according to embodiment;
Fig. 2 is the schematic diagram of the dust control system according to embodiment;
Fig. 2 A is the schematic diagram of the controller according to embodiment;
Fig. 3 a-c shows the theoretical curve of the simplification of the pressure curve of the head air receiver under different valve failure condition; And
Fig. 4 shows the chart of the clean cycle as required implemented by the controller of Fig. 2 A.
Detailed description of the invention
In some embodiments, disclose a kind of method determining the state of filtering dust unit, wherein filtering dust unit has for being directed to the air inlet line of filter and the air outlet manifold for receiving the air be filtered from filter by filtered air, want filtered air can flow to exit through filter from porch, and its middle filtrator bears clean cycle, said method comprising the steps of:
After a clean cycle of filter, detect the concentration of the dust in export pipeline, the concentration of the dust of detection illustrates the state of filtering dust unit.
In one form, the method be included in detecting step after such step: by the concentration of the dust of detection compared with benchmark dust concentration, the detection dust concentration being wherein greater than benchmark dust concentration illustrates in dust filter to there is leakage.In certain embodiments, comparison step can be carried out in the scheduled time after cleaning and filtering.Alternatively, comparison step can be carried out after clean cycle in the scheduled time percentage of single clean cycle completely.
In one form, clean cycle comprises forces air with the direction contrary with wanting the flow direction of filtered air through filter, this operation continue one section predetermined time section or this operation until the air of predetermined volumes is by filters locations.In specific form, force the step of air through filter to comprise and force air as air pulse to flow through filter to flowing through filter to the pressure that the pressure of the air of export pipeline is higher higher than from entrance pipe.
Clean cycle can comprise shake filter.
In one form, filter element can comprise multiple filter and the method for detecting the leakage of a filter in the leakage of at least one filter or filter set.Filter element can also comprise outlet manifold, and its middle filtrator or each filter are connected to manifold and export pipeline is communicated with manifold fluid.In one form, filter element can comprise multiple described outlet manifold, and each manifold has at least one connected described filter and is communicated with export pipeline.Detecting step can at different time applications to each corresponding manifold.Alternatively, the method can be applied as the leakage detecting and be connected at least one filter of the filter set of a manifold in manifold.
In specific form, filter or each filter are bag filter or cartridge filter.
In one form, when the leakage in filter element being detected, stopped by the air flowing of filter.
In one form, provide the air pressure difference determined across filter so that another step of the further state of filtering dust unit to be described.In particular form, air pressure difference illustrates that filter is the need of clean.
In some embodiments, disclose the method for the state determining filtering dust unit, wherein this filtering dust unit has for being directed to the air inlet line of filter and the air outlet manifold for receiving institute's filtered air from filter by filtered air, want filtered air can flow to exit from porch and its middle filtrator bears clean cycle through filter, the method comprising the steps of:
Determine the air pressure difference across filter, so that the state of filtering dust unit to be described.
In particular form, determined the feature of clean cycle by the air pressure difference across filter determined by application.The duration that the feature of clean cycle can being circulation, the intensity of circulation and/or the start-up time of clean cycle.
In particular form, if be characterized as the start-up time of clean cycle, then when by the pressure differential determined is on predetermined threshold value time, start clean cycle.
In some embodiments, disclose the surveillance for filtering dust unit, this unit comprises for being directed to the air inlet line of filter and the air outlet manifold for receiving filtered air from filter by filtered air, want filtered air can flow to exit from porch and its middle filtrator bears clean cycle through filter, this system comprises:
Dust detector, this dust detector is configured to be associated with the detection of the dust concentration in export pipeline and for detecting the dust concentration in export pipeline; And
Controller, the dust concentration that this controller detects after being configured to be identified in a clean cycle, make detect dust concentration can compared with benchmark dust concentration.
In one form, this system also comprises being arranged as and to be compared with benchmark dust concentration by the dust concentration of detection thus to determine the comparator module of the state of filter element; And being arranged as the signal that to give the alarm in response to comparator module, the state of described comparator module determination filter element shows one or more feature.
In one form, one or more feature comprises leakage possible in the filter.
In some embodiments, disclose a kind of control system for filtering dust unit, this unit comprises for being directed to the air inlet line of filter and the air outlet manifold for receiving filtered air from filter by filtered air, want filtered air can flow to exit from porch and its middle filtrator bears clean cycle through filter, this system comprises:
For detecting the device of the air pressure difference across filter; And
Controller, this controller can be operated so that in response to being in the air pressure difference of threshold level to control one or more features of clean cycle.According to a forth aspect of the invention, provide the method for the leakage detected in filtering dust unit, wherein this filtering dust unit has for being directed to the air inlet line of filter and the air outlet manifold for receiving filtered air from filter by filtered air, want filtered air can flow to exit from porch and its middle filtrator bears clean cycle through filter, the method comprises the following steps:
By stirring filter, to make coming off from this filter at least partially of residue, carry out clean cycle;
Stop agitation step;
After stopping agitation step, detect the concentration of the dust in export pipeline; And
By the concentration of the dust of detection compared with benchmark dust concentration, the detection dust concentration being wherein greater than benchmark dust concentration illustrates, in filtering dust unit, undesirable leakage occurs.
In some embodiments, disclose the method for the state of the clean cycle system for determining dust-collector, dust-collector has for being directed to the air inlet line of one or more filter and the air outlet manifold for receiving filtered air from one or more filter by filtered air, want filtered air can flow to exit through one or more filter from porch, and wherein one or more filters bear the clean cycle by clean cycle system (execution), clean cycle system periodically provides clean air via valve system by one or more filter from clean air source, the method comprises the following steps:
In the period at least partially of a clean cycle, measure the pressure curve of the clean air in clean air source, and by this curve and predetermined curve comparison, the state being greater than the change of the Discrepancy Description clean cycle system of scheduled volume wherein between clean air pressure curve and predetermined curve.
In one form, the state of change comprises the less desirable situation of one or more valves of valve system.Alternatively, can to comprise one or more valve closure or openness malfunctioning for less desirable situation.The difference of pressure curve can be determined by the difference between the gradient of the pressure curve of the gradient of predetermined pressure curve and clean air.
In particular form, clean air source comprises air receiver, and the step measuring clean air pressure curve comprises the clean air pressure curve of the air measured in air receiver.
In some embodiments, disclose the system of the state of the clean cycle system for determining dust-collector, dust-collector has for being directed to the air inlet line of one or more filter and the air outlet manifold for receiving filtered air from one or more filter by filtered air, want filtered air can flow to exit through one or more filter from porch, and wherein one or more filters bear the clean cycle by clean cycle system (execution), clean cycle system periodically provides clean air via valve system by one or more filter from clean air source, this system comprises:
Valve between clean air source and dust-collector, this valve can be operated that clean air is provided to one or more filter;
For measuring the device for pressure measurement of pressure in clean air source (change) in time;
For determine a clean cycle period at least partially clean air in clean air source the device of pressure curve; And
For the device that clean air pressure curve and predetermined pressure curve are contrasted, the state exceeding the change of the Discrepancy Description clean cycle system of predetermined value wherein between clean air pressure curve and predetermined pressure curve.
In one form, system comprises the controller for controlling clean cycle system and valve.Clean air source can comprise air receiver.
In particular form, when the difference higher than scheduled volume being detected, clean cycle system is interrupted.Equally, when the difference higher than scheduled volume being detected, alarm can be started.
In one form, controller is connected to computer network and can via computer network remote access.Controller can via internet and computer network communication.
With reference to accompanying drawing, filtering dust supervision/control system comprises one or more filtering dust unit 10, and wherein filter unit is the type of multiple filter set 12 that comprise filter bag 14 form, that be preferably filter bags 14 form.Each filter set 12 comprises five filter bags 14, but in an alternative embodiment, different corresponding group can comprise more or less filter bag 14.Equally in this embodiment, as shown in Figure 2, there are 4 groups 12, but in an alternative embodiment, can exist greater or less than 4 groups 12.The group used and/or the quantity of filter bag will depend on the quality and/or volume of wanting filtered air.
Comprise corresponding outlet manifold 15 for each group 12, wherein filter bag 14 remains in outlet manifold 15.Manifold 15 is connected to funnel 16 hermetically, and its mode connected is in the annular seal space that filter bag 14 is contained in limited by manifold 15 and funnel 16.Air intake 18 is fluidly communicated with funnel 16, is provided to filter bag 14 with the air that will clean.Each manifold 15 is fluidly communicated with clean air outlet pipeline 22 successively.Fan 24 is operatively connected to export pipeline 22, so that air is drawn onto export pipeline 22 from entrance 18 through filter bag 14 and manifold 15.
The group 12 of each filter bag 14 is by providing the air of one relatively high pressure with periodically clean (or by instruction in clean cycle from head air receiver 25, as described in more detail in subsequent paragraph), wherein the air of head air receiver 25 is provided to air receiver 25 by compressor 26 via check-valves 27.One air is provided from air receiver 25 through filter bag 14 along the direction contrary with the filtering direction of air stream with the pressure higher than the pressure of the air sucked through filter.This causes residue to be shed in the collecting chamber 28 at place bottom funnel 16 from filter.Collecting chamber 28 can manually empty to process residue.In this embodiment, in collecting chamber, also there is the suitable sensor 32 reaching scheduled volume of volume of the residue determined in collecting chamber 28.Alarm can be started afterwards, to notify that custodian needs to empty chamber 28.Alternatively, collected dust can be fed to from funnel the auger removing conveyer and automatically carry out by using by emptying of chamber 28.
Filtration system is provided with the controller 33 being configured to provide multiple function.A function is arrange cleaning of filter bag 14.Another with reference to accompanying drawing 2A, controller 33 comprises the microprocessor 60 implementing valve control module 62, and wherein valve control module 62 is programmed so that (such as by different solenoids or analog) controls different pulse entrances and manifold valve to act on clean cycle.In one embodiment, this comprises the running coming control impuls inlet valve 34 and manifold valve 36 based on the program code be stored in memory 64.In the embodiment as shown, each manifold 15 has a described pulse inlet valve 34 associated with it and a described manifold valve 36.In order to perform cleaning function, by the instruction of controller 33, manifold valve 36 activated to close and pulse inlet valve 34 activated to open.As mentioned above, this forces air pulse to pass back through filter bag 14.In practice, no matter often need to continue filter process and whether filter bag 14 cleans.Therefore, in this embodiment, controller 33 is configured to the group 12 allowing once to clean a filter bag 14, to allow remaining group 12 to continue to filter.This by use sublevel order, be ranked or clean cycle or the clean cycle that started by the state in response to filter are realized especially.In an alternative embodiment, according to the demand of the user of filtration system, can clean all or more than the filter bag of a group simultaneously.
In this embodiment, can monitor filter element, to determine the state of filtering dust unit 10, the state will determined in this embodiment is the integraty of filter bag 14, and another state is that filter bag is the need of clean.
In the determination of the integraty of filter bag, can determine whether one or more groups 12 comprise one or more that break or that damage or otherwise be the filter bag 14 of non-integral.This is by using the dust granule monitor 38 being arranged in export pipeline 22 to realize.In this embodiment, reading in the clean of air and the concentration detecting the dust in export pipeline 22 during filtering, and is sent to the comparison module 66 implemented by controller 33, next to analyze by dust granule monitor 38.Reading compares with the benchmark concentration be stored in memory 64 by comparator module 66 afterwards, wherein the Cmax of particulate matter of benchmark concentration for allowing in filtered air.If comparator module 66 detects that the concentration of dust granule is higher than datum-plane, and especially on datum-plane higher than predetermined percentage tolerance, then estimate at least one filter bag 14 and there is less desirable leakage.Such as, datum-plane can be that 99.9% of all particulates matter being 1 μ rice removes by the average particulate diameter in air by unit 10.Predetermined tolerance also can be 0.9%, if make comparator module 66 determine remove by unit 10 particulate matter being less than 99% from air, then thinks that a filter bag 14 leaks.
Inventor has realized that when filter bag leaks, leak may by the residue assembled for a long time that filters block, because this reducing the less desirable particulate matter by filter, sometimes reduce to the level being difficult to accurately detect.But after clean cycle, the residue blocking less desirable leakage is removed immediately, and next increased, until residue is assembled again on less desirable leakage point by the amount of the less desirable particulate matter of the filter of leakage.Therefore, determine for given group 12, the preferred time of the amount of particulate matter being compared with benchmark concentration is carry out immediately after clean cycle is implemented on given filter bag 14 group 12, and this is usually easier to detect the less desirable particulate matter in export pipeline 22 between at this moment.In addition, in view of each group 12 clean is sequential, if a specific group clean after, comparator module 66 detects the increase of particulate matter immediately, then also can estimate at least one filter bag 14 in cleaned group 12 and have less desirable leakage.The filtration of the group 12 by being detected as the filter bag comprising leakage can stop by custodian or other director afterwards, with the filter bag of inspection group 12 and change or repair non-integral or damage filter.
Alternatively, in the detection of leaking, the automated system employing controller 33 can be applied, to stop the filtration of the group 12 of the filter bag by including leakage.In one embodiment, this is realized by valve control module 62, and wherein valve control module 62 also can be operating as and based on the program code be stored in memory 64, close the valve 42 of the side of filtered air of the group 12 of the filter bag with damage.In this way, filtering dust unit 10 can continue through all the other groups 12 operated and filter the air entered.The group 12 of the filter bag with damage can be isolated afterwards and visual inspection is carried out to damage.
It being understood that when attempt with one or more unit 10 in use in the system of hundreds and thousands of filter bags 14, the mistake in a filter bag 14 or leak is located time, this is useful especially.The advantage that this embodiment also has is that each unit 10 only needs a dust granule monitor 38, which reduces fund and running cost.
In one embodiment, controller 33 is also communicated with pressure sensor 50, to determine the pressure differential in any given time across filter bag.Pressure differential can be used for determining when by controller 33 and how control clean cycle best.For the setting shown in Fig. 1, pressure differential can be such as in the scope of 0-2.5 kPa, and this depends on state and the life-span of filter bag.The reading of pressure differential can be sent to the pressure control module 70 implemented by controller 33 afterwards, wherein pressure control module 70 utilizes reading to control the feature of clean cycle, start-up time of such as clean cycle (namely for by instruction clean), clean cycle duration and/or the intensity of clean cycle.The advantage of this system by reducing the life-span unnecessary clean needs being extended to bag, and can strengthen the performance of system.
When enabling clean option (namely with periodically controlling the relative option of option) by instruction, pressure control module 70 can be configured in response to met some predetermined entry conditions be associated with the feature of filtration system to start clean cycle.Such as, condition can be exceeded predetermined threshold pressure difference.Predetermined threshold pressure difference can be set in and indicate filter bag 14 and block and need clean level.Such as, pressure control module 70 is programmed to be compared with the first threshold stress level be stored in memory 64 by the reading of the current pressure received from pressure sensor 50 difference.Controller will start clean cycle afterwards, and wherein this clean cycle can continue until met the stop condition be associated with system features.For pressure differential drops to, stop condition such as can represent that output clean enough is with under the Second Threshold stress level (being still stored in memory 64) continuing filtration.But it will be understood by those skilled in the art that, system features can not be pressure differential.Such as, feature can be the duration of runs, filtration condition etc.
It being understood that during frequent operational phase, in the extra high situation of particle level that the air entered exists, the pressure differential measured by pressure control module 70 can rise sharp and once rapidly exceed first threshold stress level 92.In this case, normal clean cycle may be not enough within the suitable time limit, pressure differential be declined.In order to adapt to the stage of this frequent use, three threshold level higher than first threshold level can be programmed in pressure control module 70, and once more than the 3rd threshold level, then cause controller 33 to implement the clean cycle strengthened.In one embodiment, the clean cycle of enhancing can than the clean cycle of standard (as previously mentioned) frequently earth pulsation and/or have the fluctuation pressure of increase.It is contemplated that other modification of increasing effective cleaning ability and these modification should not be considered as by above-mentioned change restriction.
The present inventor has realized that the structure due to filter, and some filter bag 14 little by little may be retained in the particle after each clean cycle in time.Therefore, no matter controller 33 how many times or how to implement clean cycle frequently, the pressure differential of system all can little by little raise and the above-mentioned threshold value for these filter bags is no longer suitable.Such as, if the threshold value for this system keeps constant, then the pressure differential of system little by little can reach and make clean cycle can the point (that is pulsation be continuous print) of " unlatching " continuously, as mentioned above, this will cause filter bag to wear and tear prematurely and therefore abolishes by the clean characteristic of instruction.For avoiding this situation, in one embodiment, pressure control module 70 advantageously can implement dynamic threshold, and the value of described dynamic threshold increased with this life-span.
In one embodiment, when pressure control module 70 determine clean cycle opened a period of time T longer than some stages scheduled time in memory of storage continuously time, dynamic threshold can be set as increasing.Such as, if system has been pulsed more than two hours continuously, then pressure control module 70 can increase Second Threshold (stopping the stress level of clean cycle), Second Threshold is met or exceedes current system pressure difference.First and the 3rd threshold value can increase corresponding amount simultaneously.Certainly, it being understood that the pulse duration of the adjustment of activation threshold value can higher or lower than two hours, this depends on actual enforcement (type, particle size etc. of namely used filter).In one embodiment, pressure control module 70 determine when and with which kind of degree to increase threshold value time, stage and/or the life-span of filter bag 14 can be considered additionally or alternati.In one embodiment, the time that threshold value increases and/or amount also can depend on different systematic parameters, the type of such as filter bag 14, the size of particle of being filtered by system and other relevant system parameters any.In another embodiment, the amount that threshold value increases is predetermined fixing amount.The staged that Fig. 4 shows this threshold level increases.According to Fig. 4, measured pressure differential is indicated by Reference numeral 90, and first, second, and third pressure differential level is indicated by Reference numeral 92,94,96 respectively.Also show the pulsation intervals of clean cycle and indicated by Reference numeral 98.Pressure control module 70 can continue to increase threshold value, until first threshold level (such as first threshold level has reached 90% of alarm levels) within a segment distance of alarm pressure difference level 100.In this position, pressure control module 70 can be configured to the suitable alarm (being such as audible or visible alarm) sending the replacing of filter bag 14 needs to operator.
In another embodiment that can be combined with aforesaid way or be used alone, the state determined by controller 33 is whether one or more pulse inlet valve 34 continues closure or openness undesirably.This may due to such as dust assembles at valve place and do not allow mechanical breakdown or the power failure of valve closure or openness, such as, be the electrical connection section short circuit operatively engaged with problematic valve and occurring.The pressure curve that this state measures the air pressure in air receiver 25 by the pressure converter 40 that use communicates with pressure control module 70 during clean cycle is determined.This air pressure is significantly higher than the air pressure across filter of detection, and usually in the scope of 550-800 kPa.It being understood that the measured curve cloth during clean cycle should decline along with the time, as shown in Figure 3 a, the air pressure wherein during clean cycle is indicated by 44 and air pressure between clean cycle is indicated by 46.Between clean cycle, along with air is fed to air receiver 25 by compressor 26, pressure increase.Pressure control module 70 monitors air pressure in receiver 25 and can operate as once pressure reaches predetermined maximum pressure, stops the air supply to air receiver 25.During clean cycle, in air receiver 25, the pressure curve 44 of pressure change can as predetermined or desired pressure curve (being namely stored in the pressure curve in memory 64), and it indicates cleaning systems valve 34 and works as expected.
With reference to Fig. 3 b, if pulse of air inlet valve 34 is opened and is failed to close during clean cycle 44 ＇, then the gradient of the air pressure curve (44 ＇ ＇) of clean cycle is subsequently by relative mild, and this is because starting pressure will reduce due to the leakage of the clean air by pulse inlet valve 34.Although pressure control module 70 is noticed that the air pressure in air receiver 25 is too low and is therefore instructed air compressor 26 to continue to receiver supply air, but the pulse of air inlet valve 34 opened continues leakage air, and therefore pressure or decline (as shown in Figure 3 b), remain unchanged, or As time goes on and slightly rise, this depends on the degree that valve 34 is opened.Therefore, there are differences by between the pressure curve in the pressure curve of 44 expectations indicated and Fig. 3 b measured by 44 ＇ ＇ indicate in fig. 3 a.This illustrates that valve 34 fails to close.
Similarly, with reference to Fig. 3 c, if pulse of air inlet valve 34 fails to open, then during clean cycle subsequently, there is no the decline of pressure, and pressure curve will be similar to the distribution indicated by 44 ＇ ＇ ＇ in Fig. 3 c.To again there are differences by between the pressure curve of 46 expectations indicated and the pressure curve in figure 3 c measured by 44 ＇ ＇ ＇ indicate in Fig. 3 a.Explanation valve 34 fails to open by this.The absolute value of pressure illustrate fault be by valve fail to open cause or fail closed causing by valve.Such as, the pressure curve in comparison diagram 3b and Fig. 3 c, wherein valve 34 is respectively and fails closed and open, and the air pressure with the air receiver 25 of closed valve is relatively higher than the air pressure of the air receiver 25 of the valve with unlatching.It being understood that then this is the situation of extreme fault if any one pulse inlet valve 34 continues complete closure or openness.
If any pulse of air inlet valve 34 is confirmed as lasting closure or openness, then first pulse of air inlet valve 34 is tested to determine it whether because power failure continues closure or openness.In this embodiment, the test module implemented by controller 33 can operate as and electric current is fed to each valve 34 that there is fault.If electric current is on predeterminated level, then mean the short circuit that there is less desirable leap valve.If electric current is lower than predetermined amount, or electric current is zero, then mean the open circuit that there is less desirable leap valve.If open circuit or short circuit do not detected, then mean that the fault of in-problem valve 34 is mechanical breakdown.Valve can be isolated and carry out visual inspection afterwards.The obstacle (being such as the gathering of dust) that any vision-based detection arrives can be removed afterwards, or repair or change the valve of fault on demand.
Although present embodiment is applied to the cleaning unit 10 monitored by the administrative staff at scene, but in another embodiment, as the modification of each in above-mentioned embodiment, controller 33 can carry out remote access by computer via internet or some other suitable communication networks.In this way, the running of filtering dust unit 10 can monitor non-at-scenely and/or control.Such as, if determine clean cycle to need amendment, then control signal can be sent to control module 33, control module 33 causes the clean cycle program code be stored in memory 64 to do suitable amendment.In the embodiment shown in Fig. 2 A, controller 33 comprises the modem 82 for communicating with remote computer via the dedicated network of the safety indicated by Reference numeral 84.
It being understood that unless the context requires otherwise or suggestion, otherwise the characteristic of arbitrary above-mentioned embodiment can be combined with another or multiple above-mentioned embodiment.
Although the disclosure describes with reference to preferred embodiment, but be to be understood that the word used is descriptive words, instead of restrictive, and when not with the scope of the present invention be defined by the following claims to when deviating from, can change.
In following claim and more than describe in, unless context separately has needs due to representation language or inevitable implication, otherwise in various embodiments, but word " comprises " or such as the variant of " comprising " is used as open implication, the existence of described characteristic is namely described does not get rid of the existence of the characteristic in different embodiment or add.
The part of common practise in the technology that this information is formed in Australia or other country any is not admitted to the reference of prior art information herein.
Claims (10)
1. one kind controls the clean method of the one or more filters in filtering dust system, wherein, described one or more filter bears multiple clean cycle, and during each clean cycle, described one or more filter is subject to air pulse in multiple times, described clean cycle has the entry condition and stop condition that are associated with the pressure differential of one or more filters of the leap detected described filtering dust system, wherein, described entry condition is that the pressure differential of crossing over described one or more filter has reached the first predetermined value, described stop condition is that the pressure differential of crossing over described one or more filter has dropped to lower than the second predetermined value, described second predetermined value is lower than described first predetermined value, described method comprises: when before or duration of current clean cycle exceedes predetermined value time improve at least one condition in described entry condition and stop condition, to reduce the amount of the pulse that described one or more filter bears in clean cycle subsequently, thus avoid described one or more filter premature abrasion.
2. method according to claim 1, wherein, when the duration of current clean cycle exceedes predetermined value, in response to the adjustment of the value of described stop condition, regulates predetermined amount by the value of entry condition.
3. method according to claim 1, wherein, the value of at least one condition in described entry condition and described stop condition increases fixing amount.
4. method according to claim 1, wherein, the amount of at least one in life-span of filter, the state of filter, the particle size of material of filtering and system load is depended in the value increase of at least one condition in described entry condition and described stop condition.
5. one kind for comprising the controller of the filtering dust system of one or more filter, described controller is arranged as implements multiple clean cycle, wherein said one or more filter bears air pulse in multiple times during each clean cycle, described clean cycle has the entry condition and stop condition that are associated with the pressure differential of one or more filters of the leap detected described filtering dust system, wherein, described entry condition is that the pressure differential of crossing over described one or more filter has reached the first predetermined value, described stop condition is that the pressure differential of crossing over described one or more filter has dropped to lower than the second predetermined value, described second predetermined value is lower than described first predetermined value, described controller be also arranged as when before or duration of current clean cycle exceedes predetermined value time improve at least one condition in described entry condition and described stop condition, to reduce the amount of the pulse that described one or more filter bears in clean cycle subsequently, thus avoid described one or more filter premature abrasion.
6. controller according to claim 5, wherein, in response to the value of regulated described stop condition, described controller is also arranged as and the value of described entry condition is regulated corresponding amount.
7. controller according to claim 5, wherein, the value of at least one condition in described entry condition and described stop condition increases fixing amount.
8. controller according to claim 5, wherein, the value of described entry condition and described stop condition be conditioned depend on filter life-span, the state of filter, the amount of at least one in the particle size of material of filtering and system load.
9. one kind for comprising the controller of the dust filter system of at least one dust filter, described controller is arranged as implements multiple clean cycle within a period of time, the startup threshold value that the pressure differential that described clean cycle has at least one dust filter described in filtering dust system described with the leap detected is associated and outage threshold, described controller is also arranged as incrementally increases each described startup threshold value and outage threshold when the duration of clean cycle exceedes predetermined value, to reduce the amount of the pulse that described one or more filter bears in clean cycle subsequently, thus avoid described one or more filter premature abrasion.
10. controller according to claim 9, wherein, described controller be arranged as in response to by the predetermined state of described filtration system determined to implement each increase increased progressively.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2010903505 | 2010-08-05 | ||
| AU2010903505A AU2010903505A0 (en) | 2010-08-05 | Dust collector control system | |
| PCT/AU2011/001002 WO2012016299A1 (en) | 2010-08-05 | 2011-08-05 | Dust collector control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103282095A CN103282095A (en) | 2013-09-04 |
| CN103282095B true CN103282095B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180048374.5A Expired - Fee Related CN103282095B (en) | 2010-08-05 | 2011-08-05 | Dust collector control system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103282095B (en) |
| CA (1) | CA2807245A1 (en) |
| WO (1) | WO2012016299A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8894744B2 (en) * | 2012-03-29 | 2014-11-25 | Alstom Technology Ltd | System and method of cleaning particulate collection devices used in a flue gas processing system |
| CN103776661A (en) * | 2012-10-18 | 2014-05-07 | 南京白云化工环境监测有限公司 | Automatic sampler for dust |
| KR101495191B1 (en) | 2013-10-21 | 2015-02-24 | 엘지전자 주식회사 | Robot cleaner and method for sensing dust of the same |
| RU2553286C1 (en) * | 2014-02-18 | 2015-06-10 | Владимир Евгеньевич Воскресенский | Hose-cartridge filter to clean air from mechanical impurities with built-in compressor module to produce compressed air |
| CN106020099A (en) * | 2016-07-11 | 2016-10-12 | 广东德龙能效技术有限公司 | Printing machine position selective dust automatic negative pressure discharge system in printing workshop |
| CN110935249A (en) * | 2018-09-25 | 2020-03-31 | 莱芜钢铁集团电子有限公司 | Self-cleaning control method and device for air filter |
| WO2020131926A1 (en) * | 2018-12-18 | 2020-06-25 | Donaldson Company, Inc. | Filtration systems with proactive pulse cleaning |
| CN109794485A (en) * | 2019-02-27 | 2019-05-24 | 昆山市瑞浦鑫涂装机械有限公司 | A kind of dust collecting and dedusting room |
| DE102021132287A1 (en) | 2021-12-08 | 2023-06-15 | Bayerische Motoren Werke Aktiengesellschaft | Method for fault detection in a filter system, filter system and method for manufacturing a component |
| DE102022133549A1 (en) | 2022-12-15 | 2024-06-20 | Hengst Se | Control system for an extraction system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN152704B (en) * | 1979-03-20 | 1984-03-17 | Perkins & Powell Ltd | |
| GB2098085A (en) * | 1981-05-12 | 1982-11-17 | Pvh Engineering Ltd | Controlling filter cleaning |
| US4507130A (en) * | 1983-03-21 | 1985-03-26 | General Electric Environmental Services, Inc. | Staggered method cleaning cycle for fabric filter system including multiple-baghouses |
| JPH0734597B2 (en) * | 1986-07-14 | 1995-04-12 | ソニー株式会社 | Transceiver |
| US4786293A (en) * | 1987-10-08 | 1988-11-22 | Farr Company | Smart controller for reverse pulse air filter |
| JPH062208B2 (en) * | 1988-08-11 | 1994-01-12 | 日本ゼム株式会社 | Automatic differential pressure adjustment dust collector |
| DE19527311A1 (en) * | 1995-07-26 | 1997-01-30 | Lurgi Lentjes Babcock Energie | Method and device for cleaning dust-laden gas |
| CN101290152B (en) * | 2007-04-18 | 2010-05-26 | 海尔集团公司 | Filter screen self-cleaning device |
| RU2448759C2 (en) * | 2008-07-29 | 2012-04-27 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н.Ельцина" | Method of controlling dust bag filter regeneration with pulse-to-pulse interval correction |
-
2011
- 2011-08-05 CN CN201180048374.5A patent/CN103282095B/en not_active Expired - Fee Related
- 2011-08-05 CA CA2807245A patent/CA2807245A1/en not_active Abandoned
- 2011-08-05 WO PCT/AU2011/001002 patent/WO2012016299A1/en active Application Filing
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| WO2012016299A1 (en) | 2012-02-09 |
| CN103282095A (en) | 2013-09-04 |
| CA2807245A1 (en) | 2012-02-09 |
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