CN103744444A - Coal water slurry tracking burdening control system - Google Patents
Coal water slurry tracking burdening control system Download PDFInfo
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- CN103744444A CN103744444A CN201410028056.8A CN201410028056A CN103744444A CN 103744444 A CN103744444 A CN 103744444A CN 201410028056 A CN201410028056 A CN 201410028056A CN 103744444 A CN103744444 A CN 103744444A
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Abstract
The invention discloses a coal water slurry tracking burdening control system, comprising an upper-level control device and a lower-level control device; the upper-level control device is an embedded microcomputer and is used for finishing proportion of preparing components of water coal slurry and the calculation of the actual use quantity by establishing a mathematical model program and sending a flow command to the lower-level control device. The low-level control device comprises at least two microcomputer controllers and a frequency converter related to the microcomputer controllers. The frequency converter is used for controlling the speed of feeding equipment provided with a counter. Each microcomputer controller controls and adjusts the feeding quantity of the feeding equipment by receiving the flow command from the upper-level control device and collecting the flow information of the counter. The coal water slurry tracking burdening control system is simple, easy, visual, and convenient in operation without the need of being operated by personnel with professional knowledge, interference and influence of manual factors are reduced, multiple times of formula verification steps are saved and the operation cost is greatly saved.
Description
Technical field
The invention belongs to coal water mixture production field, be specifically related to a kind of coal water mixture and follow the tracks of batching control system.
Background technology
Primary raw material prepared by coal water mixture is coal dust, adjuvant and fresh water (FW), and the control of coal water mixture proportioning is the key of coal water mixture preparation quality.Existing coal water mixture prepare production line without coal water mixture raw materials from the motion tracking control technology of preparing burden, most enterprises adopt manual weighing's proportionings, small part enterprise has adopted automatic mixing equipment, but its proportioning is only weight proportion, but not composition proportion.The accuracy of coal water mixture raw material proportioning need know in the chemical examination link in coal water mixture preparation technology later stage, and each adjustment of each raw material proportioning all needs to verify by chemical examination.Even so, each variation of coal water mixture raw materials description, all needs to redefine component ratio prepared by coal water mixture, and adjustment next time means waste and the benefit loss of last proportioning raw material.
Summary of the invention
Goal of the invention: the object of the invention is in order to solve the problems of the technologies described above, provide a kind of can be to entering coal water mixture that raw coal, fresh water (FW) and the adjuvant of grinding machine measure feed, proportioning control and traffic monitoring on coal water mixture production line from motion tracking feed proportioning system.
Technical scheme: a kind of coal water mixture of the present invention is followed the tracks of batching control system, comprise higher level's control device and subordinate's control device, described higher level's control device is an embedded computer, in it, set up mathematical model program, be used for the calculating of coal water mixture prepared composition proportioning and actual amount, and sent flow instruction to subordinate's control device; Described subordinate control device comprises at least two microcomputerized controllers and associated frequency converter, described Frequency Converter Control feeding device speed, described feeding device all configures meter, and described every microcomputerized controller is controlled and adjust the feeding coal of feeding device from the flow information of the flow instruction of described higher level's control device and the described meter of collection by reception.
Preferably, described subordinate control device comprises three microcomputerized controllers, is respectively coal dust microcomputerized controller, adjuvant microcomputerized controller and fresh water (FW) microcomputerized controller.
Preferably, the flow signal that described coal dust microcomputerized controller gathers is from the LOAD CELLS and the tachogenerator that are connected with coal dust batcher; The flow signal that described adjuvant microcomputerized controller gathers from the supporting pipeline flowmeter of adjuvant feed pump; The flow signal that described fresh water (FW) microcomputerized controller gathers from the supporting pipeline flowmeter of fresh water (FW) feed pump.
Preferably, described feeding device comprises coal dust feeding device, adjuvant feeding device and fresh water (FW) feeding device.
Preferably, described coal dust feeding device is the one in belt feeder, screw feeder or skip-type feeder.
Preferably, described fresh water (FW) feeding device is screw pump or centrifugal pump.
Preferably, described adjuvant feeding device determines by the kind of adjuvant, and when adjuvant is liquid, described feeding device is screw pump or centrifugal pump, and when adjuvant is dry powder-shaped or graininess, described feeding device is decline batcher or skip-type feeder of weightlessness.
Beneficial effect:
1, adopt coal water mixture from motion tracking feed proportioning system, enterprise greatly reduces the dependence to professional, reduce coal water mixture industry and entered gate threshold secondly, simple and easy, directly perceived, convenient from the operation of motion tracking batching control system, without the personnel's operation that possesses professional knowledge, especially for coal water mixture preparation quality, interference and the impact of human factor have been reduced completely.
2, it is apparent adopting the economic benefit brought from motion tracking proportioning control technology of coal water mixture: to produce the coal water mixture production line of 250,000 tons per year as example, only open first half section coal water mixture preparation technology equipment, its electric power power consumption is that 1700kw is many.Coal water mixture is fed into and can adopts chemical examination from raw material, and 1 hour approximately consuming time, the power consumption of each formula checking was 1700kw, 2950 yuan of the electricity charge; 20 tons of the coal consumptions that disappears, coal price, by 950 yuan/ton of calculations, is converted into money 19760 yuan; Approximately 7110 yuan of depletion of additive amount valencys; 11 cubes of water loss, by 4 yuan of/cube of calculations, 44 yuan at a discount.Only foregoing, do not comprise the expenses such as depreciation of equipment, labour cost, formula checking needs the checking of once filling a prescription of 29850 yuan of costs, visible every minimizing can pay less 30,000 yuan, if reduce every year by ten formula checkings, the expense of its saving can not be underestimated an enterprise.And if coal water mixture production line has adopted from motion tracking proportioning control system, formula checking almost once just becomes, and only does fine setting.
Accompanying drawing explanation
Fig. 1 is system construction drawing of the present invention.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
Embodiment 1
As shown in Figure 1, a kind of coal water mixture is followed the tracks of batching control system, comprise higher level's control device and subordinate's control device, described higher level's control device is an embedded computer, in it, set up mathematical model program, the man-machine touch screen interface that employing can be got in touch with DCS system communication, for completing the calculating of coal water mixture prepared composition proportioning and actual amount, and sends flow instruction to subordinate's control device; Described subordinate control device comprises three microcomputerized controllers, is respectively coal dust microcomputerized controller, adjuvant microcomputerized controller and fresh water (FW) microcomputerized controller;
Described coal dust microcomputerized controller is by the speed of Frequency Converter Control coal dust belt feeder, LOAD CELLS and tachogenerator are as meter, its weight signal enters coal dust microcomputerized controller, and coal dust microcomputerized controller is adjusted the specified feeding coal of coal dust belt feeder again according to the real-time weight signal gathering.
Described adjuvant microcomputerized controller is by the rotating speed of Frequency Converter Control adjuvant feed pump, enter adjuvant microcomputerized controller with the flow signal of the supporting pipeline flowmeter of adjuvant feed pump, adjuvant microcomputerized controller is adjusted the rated flow of adjuvant feed pump again according to the real-time traffic signal gathering.
Described fresh water (FW) microcomputerized controller is by the rotating speed of Frequency Converter Control fresh water (FW) feed pump, enter fresh water (FW) microcomputerized controller with the flow signal of the supporting pipeline flowmeter of fresh water (FW) feed pump, fresh water (FW) microcomputerized controller is again according to the rated flow of the real-time traffic signal adjusting process water feed pump gathering.
Bowl mill, as postchannel process equipment, is used for receiving the materials such as coal, fresh water (FW) and adjuvant, carries out mixed grinding.
Embodiment 2
The difference of the present embodiment and embodiment 1 is feeding device, and the coal dust belt feeder in embodiment 1 is replaced with to coal powder spiral batcher, and all the other equipment are identical with embodiment 1.
Embodiment 3
The difference of the present embodiment and embodiment 1 is feeding device, and the adjuvant feed pump in embodiment 1 is replaced with as the weightlessness batcher that declines, and rejects pipeline flowmeter, and all the other equipment are identical with embodiment 1.
Coal water mixture is followed the tracks of the principle of work of batching control system:
The present embodiment is selected and can be done man-machine interface with the embedded computer of DCS system communication contact, what coal dust, fresh water (FW), adjuvant were set on touch-screen enters to grind ratio value, flow value separately and other parameter, described embedded computer is according to the desired concentration value of coal water slurry process and raw materials used water percentage, calculate out the actual expense of coal water mixture preparation technology coal dust, adjuvant, calculate out the actual magnitude of recruitment of fresh water (FW), complete thus composition proportion calculating prepared by coal water mixture simultaneously.After composition proportion is determined, described embedded computer is according to the actual expense of pure coal dust, pure adjuvant and fresh water (FW), be converted to the formulation by weight of selecting raw material, determined the required pulverized coal flow value of subordinate's control hierarchy function, additive stream value and fresh water (FW) flow value.
Three microcomputerized controllers are carried out respectively the flow instruction of coal dust, adjuvant and fresh water (FW), start feeding device, when the specification value that certain feed stream value of coal water mixture does not reach or overweight is filled a prescription, microcomputerized controller is constantly accelerated by frequency-variable controller or the travelling speed of the feeding device that slows down, make it the specification value that flow value constantly approaches formulation by weight, realize certainly the adjusting of raw material batcher, free excellent, the impact of its flow rate fluctuation is controlled to minimum state.In control procedure, take the flow rate fluctuation of coal dust batcher as main contral parameter, adjuvant feed pump and fresh water (FW) the feed pump coal dust of formula tracking by weight proportion batcher fluctuate in proportion, guarantee the accuracy of each raw material real-time traffic ratio in coal water mixture preparation process.
Coal dust belt feeder, coal powder spiral batcher control principle: when belt feeder or screw feeder are during in automatic control state, microcomputerized controller receives the pulverized coal flow value instruction (while departing from touch-screen control, pulverized coal flow value can be directly set on microcomputerized controller) of touch-screen, by the rotating speed of Frequency Converter Control belt feeder or screw feeder; The weight signal of coal dust and the rate signal of belt feeder motor or screw feeder motor on the belt feeder that microcomputerized controller Real-time Collection LOAD CELLS provides simultaneously or screw feeder, carry out computing by microprocessor.The real-time flow data calculating is compared with the flow value of setting, then carry out deviate adjustment, by frequency converter, immediately regulate the motor speed of belt feeder or screw feeder, make real-time flow data level off to setting flow value, realize the object of dosing.During manual state of a control, the tachometer value of belt feeder or screw feeder is directly set on microcomputerized controller, by frequency converter, the constant speed of belt feeder or screw feeder is realized to closed-loop control, realize the object of dosing.
Feed pump (synchronize and use with flowmeter) control principle: when automatic control state, microcomputerized controller receives fresh water (FW) flow value and the dilution additive flow value instruction (while departing from touch-screen control, flow value can be directly set on microcomputerized controller) of touch-screen, by the rotating speed of Frequency Converter Control pipeline feed pump motor; The fresh water (FW) that microcomputerized controller Real-time Collection pipeline flowmeter provides simultaneously or the flow signal of dilution additive, carry out computing by microprocessor.The real-time flow data calculating is compared with the flow value of setting, then carry out deviate adjustment, by frequency converter, immediately regulate the motor speed of pipeline feed pump, make real-time flow data level off to setting flow value, realize dosing requirement.During manual state of a control, the tachometer value of feed pump is directly set on microcomputerized controller, by frequency converter, the constant speed of feed centrifugal pump is realized to closed-loop control, realize dosing requirement.
The weightlessness batcher control principle that declines: under automatic control state, when small feed bin is filled it up with after raw material first, microcomputerized controller is controlled micro-batcher by the set-point (kg/h) of setting and started by predetermined amount of flow value feed.When directly converting weight to corresponding electric signal by LOAD CELLS, the reduction of raw material in small feed bin sends microcomputerized controller to, by preset flow value and the comparison of actual flow value, according to deviate, export the rotating speed of the micro-batcher of regulated quantity signal controlling, thereby reach the object of dosing.When in little storehouse, raw material is lower than setting, feeder is dosed to and buys securities with all one's capital toward small feed bin.Micro-batcher, by the constant operation of last spot speed, is waited to feed in raw material complete during this time, and micro-batcher proceeds to again the metering of weight feed.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a coal water mixture is followed the tracks of batching control system, it is characterized in that: comprise higher level's control device and subordinate's control device, described higher level's control device is an embedded computer, in it, set up mathematical model program, be used for the calculating of coal water mixture prepared composition proportioning and actual amount, and sent flow instruction to subordinate's control device; Described subordinate control device comprises at least two microcomputerized controllers and associated frequency converter, described Frequency Converter Control feeding device speed, described feeding device all configures meter, and described every microcomputerized controller is controlled and adjust the feeding coal of feeding device from the flow information of the flow instruction of described higher level's control device and the described meter of collection by reception.The flow signal of overfall meter is as auxiliary parameter.
2. a kind of coal water mixture according to claim 1 is followed the tracks of batching control system, it is characterized in that, described subordinate control device comprises three microcomputerized controllers, is respectively coal dust microcomputerized controller, adjuvant microcomputerized controller and fresh water (FW) microcomputerized controller.
3. a kind of coal water mixture according to claim 1 is followed the tracks of batching control system, it is characterized in that, described overfall is constant feeding, and the flow signal of its meter participates in the calculating of coal water mixture prepared composition proportioning in real time as auxiliary parameter.
4. a kind of coal water mixture according to claim 2 is followed the tracks of batching control system, it is characterized in that, the flow signal that described coal dust microcomputerized controller gathers is from the LOAD CELLS and the tachogenerator that are connected with coal dust batcher; The flow signal that described adjuvant microcomputerized controller gathers from the supporting pipeline flowmeter of adjuvant feed pump; The flow signal that described fresh water (FW) microcomputerized controller gathers from the supporting pipeline flowmeter of fresh water (FW) feed pump.
5. a kind of coal water mixture according to claim 2 is followed the tracks of batching control system, it is characterized in that, described feeding device comprises coal dust feeding device, adjuvant feeding device and fresh water (FW) feeding device.
6. a kind of coal water mixture according to claim 5 is followed the tracks of batching control system, it is characterized in that, described coal dust feeding device is the one in belt feeder, screw feeder or skip-type feeder.
7. a kind of coal water mixture according to claim 5 is followed the tracks of batching control system, it is characterized in that, described fresh water (FW) feeding device is screw pump or centrifugal pump.
8. a kind of coal water mixture according to claim 5 is followed the tracks of batching control system, it is characterized in that, described adjuvant feeding device is determined by the kind of adjuvant, when adjuvant is liquid, described feeding device is screw pump or centrifugal pump, when adjuvant is dry powder-shaped or graininess, described feeding device is decline batcher or skip-type feeder of weightlessness.
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Cited By (8)
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| CN104003390A (en) * | 2014-06-16 | 2014-08-27 | 成都丽雅纤维股份有限公司 | Liquid sulfur feeding treating technology for preparing sulfide |
| CN105586099A (en) * | 2016-02-03 | 2016-05-18 | 山东佳星环保科技有限公司 | Novel multifunctional nonionic coal water slurry additive manufacturing method and apparatus |
| CN105586100A (en) * | 2016-02-03 | 2016-05-18 | 山东佳星环保科技有限公司 | Method and device for preparing ultrafine coal slurry by utilizing low volatile component |
| CN106311051A (en) * | 2016-08-31 | 2017-01-11 | 无锡东恒新能源科技有限公司 | System for premixing slurry with high solid content |
| CN108508926A (en) * | 2018-03-09 | 2018-09-07 | 深圳市海浦蒙特科技有限公司 | The control method and frequency converter of frequency converter |
| CN111420788A (en) * | 2020-04-29 | 2020-07-17 | 桂林鸿程矿山设备制造有限责任公司 | Automatic dispensing control system and method for flour mill |
| CN112987803A (en) * | 2021-02-02 | 2021-06-18 | 桂林鸿程矿山设备制造有限责任公司 | Calcium hydroxide feeding and water distribution control system and method and storage medium |
| CN115190967A (en) * | 2020-02-28 | 2022-10-14 | 博特化工装置股份公司 | Automatic sugar feeding |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104003390A (en) * | 2014-06-16 | 2014-08-27 | 成都丽雅纤维股份有限公司 | Liquid sulfur feeding treating technology for preparing sulfide |
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| CN105586099A (en) * | 2016-02-03 | 2016-05-18 | 山东佳星环保科技有限公司 | Novel multifunctional nonionic coal water slurry additive manufacturing method and apparatus |
| CN105586100A (en) * | 2016-02-03 | 2016-05-18 | 山东佳星环保科技有限公司 | Method and device for preparing ultrafine coal slurry by utilizing low volatile component |
| CN106311051A (en) * | 2016-08-31 | 2017-01-11 | 无锡东恒新能源科技有限公司 | System for premixing slurry with high solid content |
| CN108508926A (en) * | 2018-03-09 | 2018-09-07 | 深圳市海浦蒙特科技有限公司 | The control method and frequency converter of frequency converter |
| CN115190967A (en) * | 2020-02-28 | 2022-10-14 | 博特化工装置股份公司 | Automatic sugar feeding |
| CN111420788A (en) * | 2020-04-29 | 2020-07-17 | 桂林鸿程矿山设备制造有限责任公司 | Automatic dispensing control system and method for flour mill |
| CN112987803A (en) * | 2021-02-02 | 2021-06-18 | 桂林鸿程矿山设备制造有限责任公司 | Calcium hydroxide feeding and water distribution control system and method and storage medium |
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Application publication date: 20140423 |