CN105688531B - A kind of pressure difference sequential mixing control method of sack cleaner - Google Patents
A kind of pressure difference sequential mixing control method of sack cleaner Download PDFInfo
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- CN105688531B CN105688531B CN201410708167.3A CN201410708167A CN105688531B CN 105688531 B CN105688531 B CN 105688531B CN 201410708167 A CN201410708167 A CN 201410708167A CN 105688531 B CN105688531 B CN 105688531B
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- pressure difference
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- sack cleaner
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Abstract
The present invention relates to a kind of pressure difference sequential mixing control method of sack cleaner, this method includes：Step S1：Pressure difference dedusting condition of work, including pressure difference higher limit PH are set, pressure difference lower limit PL, PL ＜ PH, concurrently sets sequential dedusting condition of work, including sequential cycle time T5；Step S2：Circular wait dedusting, timer T start from scratch timing, and detect the pressure difference P of lower box on deduster；Step S3：When pressure difference P reaches pressure difference higher limit PH, Q electromagnetic impulse valve of control carries out pneumatic cycle ash removal several times under pressure difference dedusting running parameter, until pressure difference P is less than or equal to pressure difference lower limit PL, jump procedure S2, when pressure difference P is not up to pressure difference higher limit PH, and timer T is more than sequential cycle time T5, then Q electromagnetic impulse valve is controlled to carry out one cycle deashing, jump procedure S2 under sequential dedusting running parameter.Compared with prior art, the present invention not only has the advantages of pressure difference control efficient energy-saving, and can improve the stability of sack cleaner pneumatic cycle ash removal, extends the bulk life time of filter bag.
Description
Technical field
The present invention relates to sack cleaner system control field, is mixed more particularly, to a kind of pressure difference sequential of sack cleaner
Combination control method.
Background technology
Bag dust-collector pulse jetting cleaning is largely divided into two kinds of control modes of pressure difference or sequential.
Pressure difference control mode：According to the resistance (pressure difference of lower box i.e. on deduster) of filter bag both sides come judge whether into
Row deashing, according to the pressure difference higher limit of setting and pressure difference lower limit (pressure difference higher limit is more than pressure difference lower limit), by filter bag
Dust increase after, pressure difference is stepped up to pressure difference higher limit, carries out intensive concentration deashing, after pressure difference be less than lower limit after
Stop deashing and enter wait state.This control mode have save compressed air, can according to regulating working conditions work intensity, carry
The advantages of high efficiency of dust collection, therefore increasing sack cleaner uses the control mode of pressure difference deashing.
SECO mode：Circulation injection is carried out according to the time interval of setting, work schedule and cleaning efficiency are more steady
Calmly, cost is low, is a kind of conventional sack cleaner control mode.
At many sack cleaner scenes using pressure difference control mode, practice finds that this control mode generates filter bag
The situation of life-span reduction.Due to having used pressure difference control mode, deashing circulation is concentrated in certain several period, this intensive
Deashing load to caused by filter bag can be very big, and it is damaged, it is necessary to change showing for maintenance before expected design that filter bag often occurs
As adding the cost changed filter bag and safeguarded.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of sack cleaner
Pressure difference sequential mixing control method, not only with pressure difference control efficient energy-saving the advantages of, and can improve sack cleaner circulation
The stability of deashing, extend the bulk life time of filter bag.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of pressure difference sequential mixing control method of sack cleaner, this method include：
Step S1：Pressure difference dedusting condition of work, including pressure difference higher limit PH, pressure difference lower limit PL, PL ＜ PH are set, simultaneously
Set sequential dedusting condition of work, including sequential cycle time T5；
Step S2：Circular wait dedusting, timer T start from scratch timing, and detect the pressure difference of lower box on deduster
P；
Step S3：When pressure difference P reaches pressure difference higher limit PH, Q electromagnetic impulse valve of control works in pressure difference dedusting joins
Several lower progress pneumatic cycle ash removals several times, until pressure difference P is less than or equal to pressure difference lower limit PL, jump procedure S2, when pressure difference P not
Reach pressure difference higher limit PH, and timer T is more than sequential cycle time T5, then Q electromagnetic impulse valve is controlled in sequential dedusting work
Make to carry out one cycle deashing, jump procedure S2 under parameter.
The step S3 is specially：
301：Judge whether pressure difference P is more than or equal to pressure difference higher limit PH, if so, step 302 is performed, if it is not, performing step
Rapid 304；
302：Q electromagnetic impulse valve of control carries out one cycle deashing under pressure difference dedusting running parameter；
303：Judge whether the pressure difference P after one cycle deashing is less than or equal to pressure difference lower limit PL, if so, jump procedure
S2, if it is not, jump procedure 302；
304：Judge whether timer T is more than sequential cycle time T5, if so, perform step 305, if it is not, timer T after
Continuous timing, jump procedure 301；
305：Q electromagnetic impulse valve of control carries out one cycle deashing, jump procedure S2 under sequential dedusting running parameter.
The pneumatic cycle ash removal is that Q electromagnetic impulse valve opens deashing under corresponding running parameter in turn successively.
The T5Span meet 1min≤T5≤1440min。
The pressure difference dedusting running parameter includes pressure difference pulse width T1With pressure difference pulse spacing T2, the pressure difference pulse is wide
Spend T5The time of deashing, pressure difference pulse spacing T are opened for electromagnetic impulse valve2Open deashing successively between electromagnetic impulse valve
Interval time.
The T1Span meet 30ms≤T1≤ 300ms, the T2Span meet 1s≤T2≤600s。
The sequential dedusting running parameter includes time sequential pulse width T3With time sequential pulse interval T4, the time sequential pulse is wide
Spend T3The time of deashing, the time sequential pulse interval T are opened for electromagnetic impulse valve4Open deashing successively between electromagnetic impulse valve
Interval time.
The T3Span meet 30ms≤T3≤ 300ms, the T4Span meet 1s≤T4≤600s。
The span of the PH meets 1000Pa≤PH≤6000Pa.
The span of the PL meets 0 ＜ PL≤2000Pa.
Compared with prior art, the present invention is directed to a kind of pressure difference of control proposition of multiple electromagnetic impulse valves in sack cleaner
Sequential mixing control method, when each pneumatic cycle ash removal waits, while go to determine whether to reach on intercycle time and pressure difference
Limit condition, so as to determine that pneumatic cycle ash removal uses sequential deashing or pressure difference deashing pattern next time, is being not reaching to pressure difference deashing
SECO is carried out in the period of condition, so as to periodically reduce the collateral resistance of filter bag two, therefore the present invention has advantages below：
1) save compressed air present invention preserves pressure difference deashing, can be high according to regulating working conditions work intensity, efficiency of dust collection
The advantages of.When whether pressure difference is more than or equal to pressure difference higher limit, control electromagnetic impulse valve is carried out under pressure difference dedusting running parameter
Pressure differential cycles deashing.
2) the shortcomings that very big load being caused to filter bag instant invention overcomes intensive pressure difference deashing.Due to being damaged to filter bag
Badly larger is intensive continuous several times pressure difference deashing, and purge mode is changed into pressure difference sequential from pressure difference control mode mixes control
Mode processed, by increasing sequential deashing in circular wait pressure difference deashing process, deashing is periodically carried out, reduces filter bag both sides
Resistance, increase sack cleaner enter pressure difference pattern interval, reduce the density to the intensive deashing of filter bag, there is provided pocket type
The stability of deduster pneumatic cycle ash removal, reach and extend life of bag filter, increase maintenance period and reduce the effect of cost.
Brief description of the drawings
Fig. 1 is the structural representation of sack cleaner；
Fig. 2 is pressure difference sequential mixing control method flow chart of the present invention.
In figure：1st, pulse control instrument, 2, gas bag, 3, differential pressure ports, 4, electromagnetic impulse valve, 5, injection tube, 6, filter bag.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, sack cleaner includes casing, pulse control instrument 1, gas bag 2, differential pressure transmitter, electromagnetic impulse valve
4th, injection tube 5 and filter bag 6, differential pressure transmitter are surveyed and outer at the differential pressure ports 3 of lower box on deduster in detection filter bag 6
The pressure differential of side, interior outside pressure difference increase with the increase of the Dust Capacity adhered on filter bag 6, and pulse control instrument 1 receives difference
The pressure difference of pressure transmitter transmission, and control electromagnetic impulse valve 4 is connected, electromagnetic impulse valve 4 is located between gas bag 2 and injection tube 5,
Filter bag 6 of the compressed air from injection tube 5 into casing in control gas bag 2 carries out jetting deashing, and the dust in the outside of filter bag 6 is blown down
Ash bucket is fallen into so as to complete dedusting.
As shown in Fig. 2 a kind of pressure difference sequential mixing control method of sack cleaner is used for pulse control instrument 1 to electromagnetism arteries and veins
The control of valve 4 is rushed, realizes efficient jetting deashing, this method comprises the following steps：
Step S1：Pressure difference dedusting condition of work, including pressure difference higher limit PH, pressure difference lower limit PL, PL ＜ PH are set, simultaneously
Set sequential dedusting condition of work, including sequential cycle time T5.Wherein, PH span meet 1000Pa≤PH≤
6000Pa, PL span meet 0 ＜ PL≤2000Pa, T5Span meet 1min≤T5≤1440min。
Step S2：Circular wait dedusting, timer T start from scratch timing, and detect the pressure difference of lower box on deduster
P。
Step S3：When pressure difference P reaches pressure difference higher limit PH, Q electromagnetic impulse valve 4 of control works in pressure difference dedusting joins
Several lower progress pneumatic cycle ash removals several times, until pressure difference P is less than or equal to pressure difference lower limit PL, jump procedure S2, when pressure difference P not
Reach pressure difference higher limit PH, and timer T is more than sequential cycle time T5, then Q electromagnetic impulse valve 4 is controlled in sequential dedusting work
Make to carry out one cycle deashing, jump procedure S2 under parameter.Wherein, pneumatic cycle ash removal is Q electromagnetic impulse valve 4 successively in turn in phase
Deashing is opened under the running parameter answered.Step S3 is specially：
301：Judge whether pressure difference P is more than or equal to pressure difference higher limit PH, if so, step 302 is performed, if it is not, performing step
Rapid 304；
302：Q electromagnetic impulse valve 4 of control carries out one cycle deashing under pressure difference dedusting running parameter；Pressure difference dedusting work
Making parameter includes pressure difference pulse width T1With pressure difference pulse spacing T2, pressure difference pulse width T1Deashing is opened for electromagnetic impulse valve 4
Time, pressure difference pulse spacing T2Open the interval time of deashing successively between electromagnetic impulse valve 4.T1Span meet
30ms≤T1≤ 300ms, T2Span meet 1s≤T2≤600s；
303：Judge whether the pressure difference P after one cycle deashing is less than or equal to pressure difference lower limit PL, if so, jump procedure
S2, if it is not, jump procedure 302；
304：Judge whether timer T is more than sequential cycle time T5, if so, perform step 305, if it is not, timer T after
Continuous timing, jump procedure 301；
305：Q electromagnetic impulse valve 4 of control carries out one cycle deashing, jump procedure under sequential dedusting running parameter
S2；Sequential dedusting running parameter includes time sequential pulse width T3With time sequential pulse interval T4, time sequential pulse width T3For electromagnetic pulse
Valve 4 opens the time of deashing, time sequential pulse interval T4Open the interval time of deashing successively between electromagnetic impulse valve 4.T3Take
Value scope meets 30ms≤T3≤ 300ms, T4Span meet 1s≤T4≤600s。
Usual pulse width increase, deashing intensity are improved, and the pulse spacing is reduced, and deashing intensity improves, the ginseng in pulse spacing
Number sets also relevant with the tonifying Qi speed of gas bag 2.
A certain sack cleaner has five electromagnetic impulse valves 4, and the pressure difference of filter bag of dust collector 6 is advanced the speed in live running environment
About 400Pa/Hour (pressure difference is advanced the speed relevant with actual field situation herein).Mixed and controlled based on above-mentioned pressure difference sequential
Method, following parameter setting can be carried out to the sack cleaner：
Pressure difference higher limit PH is 2000Pa, pressure difference lower limit PL is 800Pa, sequential cycle time T5For 60min；
Pressure difference pulse width T1For 150ms, pressure difference pulse spacing T2For 10s；
Time sequential pulse width T3For 100ms, time sequential pulse interval T4For 12s.
The course of work of the sack cleaner is：
A：Electric-opening in the control system of pulse control instrument 1, into step B；
B：Into after circular wait state, timer T starts from scratch timing, as P >=PH, and meets T≤T5, into step
C1, pressure difference deashing, as T ＞ T5, into step D, sequential deashing；
C1：Stand-by period T2, No. 1 startup time T of electromagnetic impulse valve 41, stand-by period T2, when No. 2 electromagnetic impulse valves 4 start
Between T1... after repeating five electromagnetic impulse valves 4, realize that one cycle deashing enters C2；
C2：Judge after deashing circulation：Meet P ＞ PL, repeat the above steps C1；Meet P≤PL, into step B；
D：Stand-by period T4, No. 1 startup time T of electromagnetic impulse valve 43, stand-by period T4, when No. 2 electromagnetic impulse valves 4 start
Between T3... after repeating five electromagnetic impulse valves 4, one cycle deashing is realized, into step B.
Each pressure difference deashing circulation can reduce about 300Pa pressure difference under the parameter, and the circulation of sequential deashing is reduced
200Pa pressure difference.Pressure difference control mode is such as used, needs within every three hours to perform the pressure differential cycles deashing of one time continuous four times.
During using pressure difference sequential mixed-control mode, the every six hours pressure differential cycles deashings for performing one time continuous four times, carry out per hour
Sequential deashing.It is intensive continuous four pressure difference deashings due to damaging filter bag 6 larger, by purge mode from pressure difference control
Mode processed, which is changed to pressure difference sequential mixed-control mode, to improve intensive pressure difference deashing interval time twice, so favourable
In the service life for extending filter bag 6.
Presently preferred embodiments of the present invention is the foregoing is only, some Parameters variations can be according to the design of each sack cleaner
Scheme and the operating mode situation used have certain change, are not intended to limit the scope of the present invention.
Claims (9)
1. the pressure difference sequential mixing control method of a kind of sack cleaner, it is characterised in that this method includes：
Step S1：Pressure difference dedusting condition of work, including pressure difference higher limit PH are set, pressure difference lower limit PL, PL ＜ PH, is concurrently set
Sequential dedusting condition of work, including sequential cycle time T5；
Step S2：Circular wait dedusting, timer T start from scratch timing, and detect the pressure difference P of lower box on deduster；
Step S3 comprises the following steps：
301：Judge whether pressure difference P is more than or equal to pressure difference higher limit PH, if so, step 302 is performed, if it is not, performing step
304；
302：Q electromagnetic impulse valve of control carries out one cycle deashing under pressure difference dedusting running parameter；
303：Judge whether the pressure difference P after one cycle deashing is less than or equal to pressure difference lower limit PL, if so, jump procedure S2,
If it is not, jump procedure 302；
304：Judge whether timer T is more than sequential cycle time T5, if so, step 305 is performed, if it is not, timer T continues to count
When, jump procedure 301；
305：Q electromagnetic impulse valve of control carries out one cycle deashing, jump procedure S2 under sequential dedusting running parameter.
2. the pressure difference sequential mixing control method of a kind of sack cleaner according to claim 1, it is characterised in that described
Pneumatic cycle ash removal is that Q electromagnetic impulse valve opens deashing under corresponding running parameter in turn successively.
3. the pressure difference sequential mixing control method of a kind of sack cleaner according to claim 1, it is characterised in that described
T5Span meet 1min≤T5≤1440min。
4. the pressure difference sequential mixing control method of a kind of sack cleaner according to claim 1, it is characterised in that described
Pressure difference dedusting running parameter includes pressure difference pulse width T1With pressure difference pulse spacing T2, the pressure difference pulse width T1For electromagnetism arteries and veins
Rush the time that valve opens deashing, pressure difference pulse spacing T2Open the interval time of deashing successively between electromagnetic impulse valve.
5. the pressure difference sequential mixing control method of a kind of sack cleaner according to claim 4, it is characterised in that described
T1Span meet 30ms≤T1≤ 300ms, the T2Span meet 1s≤T2≤600s。
6. the pressure difference sequential mixing control method of a kind of sack cleaner according to claim 1, it is characterised in that described
Sequential dedusting running parameter includes time sequential pulse width T3With time sequential pulse interval T4, the time sequential pulse width T3For electromagnetism arteries and veins
Rush the time that valve opens deashing, the time sequential pulse interval T4Open the interval time of deashing successively between electromagnetic impulse valve.
7. the pressure difference sequential mixing control method of a kind of sack cleaner according to claim 6, it is characterised in that described
T3Span meet 30ms≤T3≤ 300ms, the T4Span meet 1s≤T4≤600s。
8. the pressure difference sequential mixing control method of a kind of sack cleaner according to claim 1, it is characterised in that described
PH span meets 1000Pa≤PH≤6000Pa.
9. the pressure difference sequential mixing control method of a kind of sack cleaner according to claim 1, it is characterised in that described
PL span meets 0 ＜ PL≤2000Pa.
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| CN201410708167.3A CN105688531B (en) | 2014-11-28 | 2014-11-28 | A kind of pressure difference sequential mixing control method of sack cleaner |
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| CN201410708167.3A CN105688531B (en) | 2014-11-28 | 2014-11-28 | A kind of pressure difference sequential mixing control method of sack cleaner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237118A (en) * | 2017-12-28 | 2018-07-03 | 北京首钢自动化信息技术有限公司 | A kind of electric precipitation is blown control method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106774250A (en) * | 2016-12-13 | 2017-05-31 | 广西科穗环境科技有限公司 | The real-time timing repair and maintenance caution system of bag-type dust equipment |
| CN112337209B (en) * | 2017-09-12 | 2022-05-17 | 苏州协昌环保科技股份有限公司 | Ash removal device of dust removal system and control method thereof |
| CN110975441A (en) * | 2019-12-11 | 2020-04-10 | 无锡雪浪环境科技股份有限公司 | Control method of bag type dust collector and dust collection system |
| CN111643989A (en) * | 2020-05-06 | 2020-09-11 | 徐州徐工环境技术有限公司 | Automatic pulse dust removal cleaning system and method based on pressure detection |
| CN113413698B (en) * | 2021-06-29 | 2022-06-28 | 三一重型装备有限公司 | Control method of dust remover, dust removing device, dust remover and readable storage medium |
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| JP3460991B2 (en) * | 2001-06-25 | 2003-10-27 | 川崎重工業株式会社 | Pulse cleaning method for multi-chamber bag filter |
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| GB2400444B (en) * | 2003-04-11 | 2006-08-30 | Ford Global Tech Llc | Pressure sensor diagnosis |
| CN101260322A (en) * | 2006-08-29 | 2008-09-10 | 包头钢铁（集团）有限责任公司 | Blast furnace gas dust removing device and technique by dry method |
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