CN106743682A - For the PLC automatic control system of the continuous Geldart-D particle of low pressure - Google Patents
For the PLC automatic control system of the continuous Geldart-D particle of low pressure Download PDFInfo
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- CN106743682A CN106743682A CN201611234764.2A CN201611234764A CN106743682A CN 106743682 A CN106743682 A CN 106743682A CN 201611234764 A CN201611234764 A CN 201611234764A CN 106743682 A CN106743682 A CN 106743682A
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- relay
- low
- continuous
- high charge
- charge level
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
For the PLC automatic control system of the continuous Geldart-D particle of low pressure, including controlled terminal unit, information acquisition unit and PLC centralized control units, controlled terminal unit and information acquisition unit are connected with PLC centralized control units respectively；Information acquisition unit includes high charge level meter and low level-sensing device；PLC centralized control units include Logic control module, and Logic control module includes the first relay, the second relay, the 3rd relay, high charge level meter, low level-sensing device；First normal open switch of the coil of the first relay, the first normally closed switch of low level-sensing device and high charge level meter is connected in series, first normal open switch of the first relay is connected in parallel with the first normal open switch of high charge level meter, and composition starts and locking M signal relay circuit；Second normal open switch of the first relay, the normally closed switch of the 3rd relay and the coil of the second relay are connected in series, component devices start and stop loop.The Energy Efficiency Ratio and service life of equipment can be improved by the present invention.
Description
Technical field
The present invention relates to a kind of PLC automatic control system for the continuous Geldart-D particle of low pressure.
Background technology
In current coal-burning power plant deduster ash disposal link, conveying receipts are mostly carried out to flyash using air-transport system
Collection.Because low-pressure pneumatic continuous conveying system has, equipment manufacturing cost is low, operating cost is low, maintenance cost is low but fed distance is short
The characteristics of, low-pressure pneumatic continuous conveying system is able to extensive use in low capacity thermal power generation, thermal power plant unit.
Existing low-pressure pneumatic continuous conveying system at the design initial stage because that need to ensure extreme operating condition requirement, therefore design margin compared with
Greatly, the surplus makes conveying device most of time operate under non-efficient operating mode in actual moving process, and Energy Efficiency Ratio is poor.
The content of the invention
The technical problems to be solved by the invention are to overcome the shortcomings of above-mentioned background technology, there is provided a kind of raising equipment
Energy Efficiency Ratio, the PLC automatic control system for the continuous Geldart-D particle of low pressure of the service life of extension device.
The technical scheme that the present invention solves the use of its technical problem is that a kind of PLC for the continuous Geldart-D particle of low pressure is certainly
Autocontrol system, including controlled terminal unit, information acquisition unit and PLC centralized control units, the controlled terminal unit and
Information acquisition unit is connected with PLC centralized control units respectively；Described information collecting unit includes high charge level information acquisition unit
With low material position information acquisition unit；The high charge level information acquisition unit is high charge level meter, and low material position information acquisition unit is low
Level-sensing device；
The PLC centralized control units include Logic control module, and the Logic control module includes the first relay, second
Relay, the 3rd relay, high charge level meter, low level-sensing device；The coil of first relay, the first of low level-sensing device normally closed open
Close and the first normal open switch of high charge level meter is connected in series, the first normal open switch of the first relay is normal with the first of high charge level meter
Switch in parallel connection is opened, composition starts and locking M signal relay circuit；Second normal open switch of first relay,
The normally closed switch of the 3rd relay and the coil of the second relay are connected in series, component devices start and stop loop, the dress
Start and stop loop is put for controlling the start and stop of controlled terminal unit.
Further, alarm unit is additionally provided with, alarm unit is connected with PLC centralized control units.
Further, the Logic control module also includes putty accident alarming loop, and the second of the high charge level meter is normally opened
The coil of switch, the second normally closed switch of low level-sensing device and the 3rd relay is connected in series, composition putty accident alarming loop, blocks up
Material accident alarming loop is used to control the start and stop of alarm unit.
Further, the controlled terminal unit includes the continuous Pneumatic conveyer of low pressure, compressed air source unit and grey storehouse device, gas
Source device is connected with the continuous Pneumatic conveyer of low pressure, and the continuous Pneumatic conveyer of low pressure is connected with grey storehouse device；Low pressure is continuous
Pneumatic conveyer includes ash bucket, and hopper bottom is provided with ash tube, and ash tube is connected with ash bucket inside；The bottom of ash tube is provided with
Batcher, the bottom of batcher is provided with low-pressure pneumatic delivery pump, and batcher is connected with low-pressure pneumatic delivery pump inside, low-pressure pneumatic
Delivery pump one end is connected with compressed air source unit, and the other end is connected with grey storehouse device；High charge level meter is located at ash bucket internal upper part, low level-sensing device
The bottom in ash bucket.
Compared with prior art, advantages of the present invention is as follows：PLC centralized control units are provided with, are controlled by PLC centers single
Unit's optimization obtains ash bucket to the control model of the continuous Geldart-D particle of low pressure using the high reliability level-sensing device on ash bucket
The accurate information of middle material position, in this, as compressed air source unit, the continuous Pneumatic conveyer of low pressure, the unlatching of grey storehouse device and stops
Criterion only, it is ensured that while extreme operating condition requirement, design margin is fully utilized, make the continuous air-transport system of low pressure
Always work in optimal design working condition, reduce compressed air source unit, the continuous Pneumatic conveyer of low pressure, the energy consumption of grey storehouse device with
Equipment attrition, improves Energy Efficiency Ratio, the service life of extension device.
Brief description of the drawings
Fig. 1 is the structured flowchart of the embodiment of the present invention.
Fig. 2 is the structural representation of the continuous Pneumatic conveyer of low pressure of embodiment illustrated in fig. 1.
Fig. 3 is the PLC ladder diagrams of the Logic control module of embodiment illustrated in fig. 1.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail to the present invention.
Reference picture 1, the present embodiment includes：Controlled terminal unit, information acquisition unit, PLC centralized control units and alarm
Unit, controlled terminal unit, information acquisition unit and alarm unit are connected with PLC centralized control units respectively.
Information acquisition unit includes high charge level information acquisition unit and low material position information acquisition unit；High charge level information gathering
Unit is high charge level meter J4, and low material position information acquisition unit is low level-sensing device J5.
Controlled terminal unit includes the continuous Pneumatic conveyer of low pressure, compressed air source unit and grey storehouse device, compressed air source unit with it is low
Continuous Pneumatic conveyer is pressed to be connected, the continuous Pneumatic conveyer of low pressure is connected with grey storehouse device；Reference picture 2, the continuous gas of low pressure
Power conveying device includes ash bucket 1, and the bottom of ash bucket 1 is provided with ash tube 2, and ash tube 2 is connected with the inside of ash bucket 1；The bottom of ash tube 2
Batcher 3 is provided with, the bottom of batcher 3 is provided with low-pressure pneumatic delivery pump 4, connects inside batcher 3 and low-pressure pneumatic delivery pump 4
Logical, the one end of low-pressure pneumatic delivery pump 4 is connected with compressed air source unit, and the other end is connected with grey storehouse device；High charge level meter J4 is located at ash bucket 1
Internal upper part, low level-sensing device J5 is located at bottom in ash bucket 1.
PLC centralized control units include Logic control module, reference picture 3, Logic control module include the first relay J1,
Second relay J2, the 3rd relay J3, high charge level meter J4, low level-sensing device J5；The coil of the first relay J1, low level-sensing device J5
The first normally closed switch J5-1 and the first normal open switch J4-1 of high charge level meter J4 be connected in series, the first of the first relay J1 is normal
The the first normal open switch J4-1 for switching J1-1 and high charge level meter J4 is connected in parallel, and composition starts and locking M signal relay
Loop；Second normal open switch J1-2, the normally closed switch J3-1 of the 3rd relay J3 of the first relay J1 and the second relay J2
Coil be connected in series, component devices start and stop loop, device start and stop loop be used for control batcher motor, gas
The start and stop of source device motor and grey storehouse device motor；The second normal open switch J4-2 of high charge level meter J4, low level-sensing device J5
The second normally closed switch J5-2 and the coil of the 3rd relay J3 be connected in series, composition putty accident alarming loop, putty accident
Alarm circuit is used to control the start and stop of alarm unit.
Operation principle of the invention is as follows：
Ash bucket 1 collects material to be sent, and the material in ash bucket 1 enters batcher 3 by ash tube 2, and material is uniform by batcher 3
Enter low-pressure pneumatic delivery pump 4 after feed, compressed air source unit provides source of the gas to low-pressure pneumatic delivery pump 4, and low-pressure pneumatic delivery pump 4 will
Material is delivered to grey storehouse device.
High charge level meter J4, low level-sensing device J5 are respectively the stuff level switch for indicating material position in ash bucket 1, low level-sensing device J5's
The first normal open switch J4-1 of normal open switch J5-1 and high charge level meter J4 is used to start the first relay J1；First relay J1 leads to
The the first normal open switch J1-1 for crossing itself realizes locking, while starter start and stop loop, device start and stop time
Road controls batcher motor, compressed air source unit motor and grey storehouse device electric motor starting, now the continuous Geldart-D particle of compressed air source unit, low pressure
Device, grey storehouse device are started working, until low level signals disappear, the continuous Pneumatic conveyer of compressed air source unit, low pressure, Hui Ku
Device is then out of service.
During if there is high charge level signal without low level signals, then it is assumed that be lower ash not smooth and formed and blocked, now the 3rd after
Electrical equipment J3 can start alarm unit alarm, notify manual intervention, meanwhile, arresting stop start and stop loop, device start with
Stop loop control batcher motor, compressed air source unit motor and grey storehouse device motor stop, the continuous pneumatic transporting of compressed air source unit, low pressure
Send device, grey storehouse device then out of service, it is to avoid sky blows, and improves Energy Efficiency Ratio, reduces wear and tear in machines.
It is above-mentioned to be controlled to a control model for the height material position of ash bucket, when a stove deduster has multiple ash buckets, can
Ash bucket is in parallel, and take any ash bucket high charge level to start the continuous Pneumatic conveyer of low pressure, one or many when sending signal
The continuous Pneumatic conveyer of low pressure stops when the low material position of individual ash bucket sends signal.
The present invention is optimized to the control model of the continuous Geldart-D particle of low pressure by PLC centralized control units, using being arranged on
High reliability level-sensing device on ash bucket 1 obtains the accurate information of material position in ash bucket 1, in this, as compressed air source unit, low pressure
Continuous Pneumatic conveyer, the unlatching of grey storehouse device and the criterion for stopping, it is ensured that while extreme operating condition requirement, by design margin
Fully utilize, the continuous air-transport system of low pressure is always worked in optimal design working condition, reduce compressed air source unit, low
Continuous Pneumatic conveyer, the energy consumption and equipment attrition of grey storehouse device are pressed, Energy Efficiency Ratio, the service life of extension device is improved.
Those skilled in the art can carry out various modifications and variations to the present invention, if these modifications and modification are at this
Within the scope of invention claim and its equivalent technologies, then these modifications and modification are also within protection scope of the present invention.
In the prior art that the content not described in detail in specification is known to the skilled person.
Claims (4)
1. a kind of PLC automatic control system for the continuous Geldart-D particle of low pressure, it is characterised in that：Including controlled terminal unit,
Information acquisition unit and PLC centralized control units, the controlled terminal unit and information acquisition unit are controlled with PLC centers respectively
Unit is connected；Described information collecting unit includes high charge level information acquisition unit and low material position information acquisition unit；The material high
Position information acquisition unit is high charge level meter, and low material position information acquisition unit is low level-sensing device；
The PLC centralized control units include Logic control module, the Logic control module include the first relay, second after
Electrical equipment, the 3rd relay, high charge level meter, low level-sensing device；The coil of first relay, the first normally closed switch of low level-sensing device
The first normal open switch with high charge level meter is connected in series, and the first normal open switch of the first relay is normally opened with the first of high charge level meter
Switch in parallel is connected, and composition starts and locking M signal relay circuit；Second normal open switch of first relay,
The coil of the normally closed switch of three relays and the second relay is connected in series, component devices start and stop loop, described device
Start and stop loop is used to control the start and stop of controlled terminal unit.
2. the PLC automatic control system of the continuous Geldart-D particle of low pressure is used for as claimed in claim 1, it is characterised in that：Also set
There is alarm unit, alarm unit is connected with PLC centralized control units.
3. the PLC automatic control system of the continuous Geldart-D particle of low pressure is used for as claimed in claim 2, it is characterised in that：It is described
Logic control module also includes putty accident alarming loop, the second normal open switch of the high charge level meter, the second of low level-sensing device
The coil of normally closed switch and the 3rd relay is connected in series, composition putty accident alarming loop, and putty accident alarming loop is used for
Control the start and stop of alarm unit.
4. the PLC automatic control system for the continuous Geldart-D particle of low pressure as described in one of claim 1-3, its feature exists
In：The controlled terminal unit includes the continuous Pneumatic conveyer of low pressure, compressed air source unit and grey storehouse device, compressed air source unit and low pressure
Continuous Pneumatic conveyer is connected, and the continuous Pneumatic conveyer of low pressure is connected with grey storehouse device；The continuous Pneumatic conveyer of low pressure
Including ash bucket, hopper bottom is provided with ash tube, and ash tube is connected with ash bucket inside；The bottom of ash tube is provided with batcher, feed
The bottom of machine is provided with low-pressure pneumatic delivery pump, and batcher is connected with low-pressure pneumatic delivery pump inside, low-pressure pneumatic delivery pump one end
It is connected with compressed air source unit, the other end is connected with grey storehouse device；High charge level meter is located at ash bucket internal upper part, and low level-sensing device is in ash bucket
Bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234764.2A CN106743682A (en) | 2016-12-28 | 2016-12-28 | For the PLC automatic control system of the continuous Geldart-D particle of low pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611234764.2A CN106743682A (en) | 2016-12-28 | 2016-12-28 | For the PLC automatic control system of the continuous Geldart-D particle of low pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106743682A true CN106743682A (en) | 2017-05-31 |
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ID=58925116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611234764.2A Pending CN106743682A (en) | 2016-12-28 | 2016-12-28 | For the PLC automatic control system of the continuous Geldart-D particle of low pressure |
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Citations (6)
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|---|---|---|---|---|
| CN102120142A (en) * | 2010-12-22 | 2011-07-13 | 浙江天蓝环保技术有限公司 | Direct injection ash supplying device in dry powder desulfurizing agent tower |
| US20110281254A1 (en) * | 2008-07-21 | 2011-11-17 | Shengli Oilfield Shengli Power Machinery Co., Ltd. | Method and apparatus for anaerobic digestion for crop stalk |
| CN202296397U (en) * | 2011-10-13 | 2012-07-04 | 中冶华天工程技术有限公司 | Wind-power ash conveying system |
| CN103923666A (en) * | 2014-04-15 | 2014-07-16 | 北京华泰焦化工程技术有限公司 | Coke powder discharge device of coke dry quenching system and method for controlling coke powder discharge process |
| CN203727957U (en) * | 2014-01-22 | 2014-07-23 | 中矿金业股份有限公司 | Automatic cleaning device of measuring hopper |
| CN104331016A (en) * | 2014-10-25 | 2015-02-04 | 山东水泥厂有限公司 | Kiln electric dust collector discharge system |
-
2016
- 2016-12-28 CN CN201611234764.2A patent/CN106743682A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110281254A1 (en) * | 2008-07-21 | 2011-11-17 | Shengli Oilfield Shengli Power Machinery Co., Ltd. | Method and apparatus for anaerobic digestion for crop stalk |
| CN102120142A (en) * | 2010-12-22 | 2011-07-13 | 浙江天蓝环保技术有限公司 | Direct injection ash supplying device in dry powder desulfurizing agent tower |
| CN202296397U (en) * | 2011-10-13 | 2012-07-04 | 中冶华天工程技术有限公司 | Wind-power ash conveying system |
| CN203727957U (en) * | 2014-01-22 | 2014-07-23 | 中矿金业股份有限公司 | Automatic cleaning device of measuring hopper |
| CN103923666A (en) * | 2014-04-15 | 2014-07-16 | 北京华泰焦化工程技术有限公司 | Coke powder discharge device of coke dry quenching system and method for controlling coke powder discharge process |
| CN104331016A (en) * | 2014-10-25 | 2015-02-04 | 山东水泥厂有限公司 | Kiln electric dust collector discharge system |
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Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |