CN102183974A - System and method for accurately controlling flow of rare earth material - Google Patents
System and method for accurately controlling flow of rare earth material Download PDFInfo
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- CN102183974A CN102183974A CN 201110054713 CN201110054713A CN102183974A CN 102183974 A CN102183974 A CN 102183974A CN 201110054713 CN201110054713 CN 201110054713 CN 201110054713 A CN201110054713 A CN 201110054713A CN 102183974 A CN102183974 A CN 102183974A
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- flow
- control valve
- pneumatic control
- flowmeter
- pump
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- 239000000463 material Substances 0.000 title claims abstract description 26
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 18
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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Abstract
The invention discloses a system and a method for accurately controlling flow of rare earth material. The system comprises a pump, a flowmeter, a pneumatic control valve and a PC upper computer, wherein the pump, the flowmeter and the pneumatic control valve are orderly mounted on a pipe arranged between two material troughs, and are respectively connected with the PC upper computer; by comparing a material flow monitored by the flowmeter and a given material flow, the PC upper computer controls opening of the pneumatic control valve to adjust amount of the flow, when the opening of the pneumatic control valve is maximized but still cannot reach a set value of the flow, then the PC upper computer sends a start-stop instruction to the pump. The invention improves the backward manual flow control method in the present rare earth production, and solves the problem of large fluctuation scope of material flow, low control precision and frequent personnel operation in control of rare earth production technology. By the invention, the precision of the flow control can reach 0.1%, fluctuation scope of instant flow is controlled within 0.5%, and fluctuation scope of flow accumulative value is further controlled within 0.2%.
Description
Technical field
The present invention relates to a kind of rare earth mass flow accuracy-control system and control method.
Technical background
In existing domestic all Rare Earth Production enterprises, the mode of mass flow control has following several approach: one, with a common ball valve made of plastic, manually calculate flow with manual time-keeping, regulate the mode of ball valve made of plastic Control Flow then; Two, glass rotameter is installed, by the mode that range estimation spinner-type flowmeter flow shows, the mode of manual shift ball valve is carried out flow control.Not only flow rate fluctuation is more for these two kinds of methods, and the flow calculating out bigger error is also arranged.More just carry out ball valve control on control mode cursorily, flow accuracy is the highest can only to reach 5%, and this quality to product reaches the stable great interference that brought.
Therefore, taking more advanced automation control system and control method, is stabilized product quality, improves the preferable approach of enterprise competitiveness.
Summary of the invention
The purpose of this invention is to provide a kind of rare earth mass flow accuracy-control system and control method, to improve the artificial flow control mode that comparatively falls behind in the present Rare Earth Production enterprise, the mass flow fluctuation range is bigger in the control of solution rare earth production technology, control accuracy is not high, shortcomings such as personnel's frequent operation.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of rare earth mass flow accuracy-control system, comprise pump, flowmeter, pneumatic control valve and PC host computer, pump, flowmeter and pneumatic control valve are installed on two pipelines between the material trough successively, pump, flowmeter is connected with the PC host computer respectively with pneumatic control valve, the PC host computer compares the aperture of controlling pneumatic control valve according to the mass flow of flowmeter monitoring and given mass flow and regulates the flow size, thereby reach the purpose of flow control, when the aperture of pneumatic control valve had reached maximum and still can't reach flow setting value, the PC host computer provided the startup halt instruction of pump.
In described two material troughs liquid level meter is installed.
A kind of rare earth mass flow accuracy control method is placed in a high position with the material storage tank, and material to the materials abstraction groove, is installed pump, flowmeter and pneumatic control valve via pipeline self successively on the pipeline; Utilize flowmeter that the flow of material in the pipeline is monitored, mass flow is fed back to the PC host computer; The PC host computer is judged the difference of actual flow and given flow according to given mass flow, controls the aperture of pneumatic control valve then and regulates the flow size, thereby reach the purpose of flow control; When the aperture of pneumatic control valve had reached maximum and still can't reach flow setting value, the PC host computer provided the startup halt instruction of pump.
The present invention utilizes Japanese Yokogawa CSl000 collective and distributive type control system, the mode of utilization pump+electromagnetic flowmeter+pneumatic control valve+PC host computer, realize instantaneous delivery and flux cumulating value accurate control.Adopt advanced automated control technology, proportion integration differentiation (PID) is regulated applying in the actual production, make the precision of flow control higher, the flow rate fluctuation scope is littler, and the unsteady of flow accumulation value minimizes.Be prevalent in a flow control difficult problem in the Rare Earth Production industry now thereby overcome, improved the quality of rare-earth products greatly, improved economic benefit of enterprises, environmental benefit and social benefit.
Description of drawings
Fig. 1 is the fundamental diagram of flow control of the present invention;
Fig. 2 is the system schematic of flow control of the present invention.
The present invention is described in detail below in conjunction with specific embodiment.
Embodiment
Cooperate illustrated in figures 1 and 2ly, a kind of rare earth mass flow accuracy-control system of the present invention comprises pump 1, flowmeter 2, pneumatic control valve 3 and PC host computer 4.Pump 1, flowmeter 2 and pneumatic control valve 3 are installed on the pipeline 7 between material storage tank 5 and the materials abstraction groove 6 successively.Pump 1, flowmeter 2 and pneumatic control valve 3 also are connected with PC host computer 4 respectively.Liquid level meter 8 is installed in material storage tank 5 and the materials abstraction groove 6.
The present invention is placed in a high position with material storage tank 5, and material flow to materials abstraction groove 6 certainly via pipeline 7.Concrete control method is: utilize the flow of material in 2 pairs of pipelines 7 of flowmeter to monitor, mass flow is fed back to PC host computer 4; PC host computer 4 is judged the difference of actual flow and given flow according to given mass flow, controls the aperture of pneumatic control valve 3 then and regulates the flow size, thereby reach the purpose of flow control.When the aperture of pneumatic control valve 3 had reached maximum and still can't reach flow setting value, PC host computer 4 provided the startup halt instruction of pump 1.
The control effect of flow control plan of the present invention and the control effect comparison result such as the following table of regulating manually:
Key of the present invention is to utilize the CSl000 collective and distributive type control system, the mode of utilization pump+electromagnetic flowmeter+pneumatic control valve+PC, realize instantaneous delivery and flux cumulating value accurate control.Mass flow is after taking this flow control methods, and the precision of flow control reaches 0.1%, and the fluctuation range of instantaneous delivery is controlled in 0.5%, and the domain of walker of flow accumulation value has been controlled in 0.2% especially.
Claims (3)
1. rare earth mass flow accuracy-control system, it is characterized in that: comprise pump, flowmeter, pneumatic control valve and PC host computer, pump, flowmeter and pneumatic control valve are installed on two pipelines between the material trough successively, pump, flowmeter is connected with the PC host computer respectively with pneumatic control valve, the PC host computer compares the aperture of controlling pneumatic control valve according to the mass flow of flowmeter monitoring and given mass flow and regulates the flow size, when the aperture of pneumatic control valve had reached maximum and still can't reach flow setting value, the PC host computer provided the startup halt instruction of pump.
2. a kind of rare earth mass flow accuracy-control system as claimed in claim 1 is characterized in that: in two material troughs liquid level meter is installed.
3. rare earth mass flow accuracy control method, it is characterized in that: the material storage tank is placed in a high position, and material to the materials abstraction groove, is installed pump, flowmeter and pneumatic control valve via pipeline self successively on the pipeline; Utilize flowmeter that the flow of material in the pipeline is monitored, mass flow is fed back to the PC host computer; The PC host computer is judged the difference of actual flow and given flow according to given mass flow, controls the aperture of pneumatic control valve then and regulates the flow size; When the aperture of pneumatic control valve had reached maximum and still can't reach flow setting value, the PC host computer provided the startup halt instruction of pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110054713 CN102183974A (en) | 2011-03-07 | 2011-03-07 | System and method for accurately controlling flow of rare earth material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110054713 CN102183974A (en) | 2011-03-07 | 2011-03-07 | System and method for accurately controlling flow of rare earth material |
Publications (1)
| Publication Number | Publication Date |
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| CN102183974A true CN102183974A (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201110054713 Pending CN102183974A (en) | 2011-03-07 | 2011-03-07 | System and method for accurately controlling flow of rare earth material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999054A (en) * | 2012-11-29 | 2013-03-27 | 成都硅宝科技股份有限公司 | Continuous and automatic liquid metering and feeding system and method for sealant production |
| CN103230759A (en) * | 2013-05-17 | 2013-08-07 | 南京凯盛国际工程有限公司 | Solution mixing and conveying pump station |
| CN103744292A (en) * | 2014-01-22 | 2014-04-23 | 东北大学 | Rare earth extraction process dynamic operating control method based on data driving |
| CN106502225A (en) * | 2016-11-10 | 2017-03-15 | 中铝广西国盛稀土开发有限公司 | The information gathering of Rare Earth Production process materials and analysis intelligence control system |
| CN107883046A (en) * | 2017-11-26 | 2018-04-06 | 曾小真 | A kind of rare earth processing volume control device |
| CN108916014A (en) * | 2018-08-09 | 2018-11-30 | 南通鑫弘电梯产品有限公司 | A kind of oil pipe oil stream amount can automatically adjust oil pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458535A (en) * | 2008-12-15 | 2009-06-17 | 扬州大学 | Programmed control constant speed quantitative liquid feeding control system |
| CN201386130Y (en) * | 2009-04-29 | 2010-01-20 | 内蒙古包钢稀土高科技股份有限公司 | Rare earth extraction and separation production automatic control device |
| CN101872200A (en) * | 2010-06-29 | 2010-10-27 | 张家港市沃斯汀新材料研究所有限公司 | Flow control device |
-
2011
- 2011-03-07 CN CN 201110054713 patent/CN102183974A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458535A (en) * | 2008-12-15 | 2009-06-17 | 扬州大学 | Programmed control constant speed quantitative liquid feeding control system |
| CN201386130Y (en) * | 2009-04-29 | 2010-01-20 | 内蒙古包钢稀土高科技股份有限公司 | Rare earth extraction and separation production automatic control device |
| CN101872200A (en) * | 2010-06-29 | 2010-10-27 | 张家港市沃斯汀新材料研究所有限公司 | Flow control device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999054A (en) * | 2012-11-29 | 2013-03-27 | 成都硅宝科技股份有限公司 | Continuous and automatic liquid metering and feeding system and method for sealant production |
| CN103230759A (en) * | 2013-05-17 | 2013-08-07 | 南京凯盛国际工程有限公司 | Solution mixing and conveying pump station |
| CN103744292A (en) * | 2014-01-22 | 2014-04-23 | 东北大学 | Rare earth extraction process dynamic operating control method based on data driving |
| CN103744292B (en) * | 2014-01-22 | 2016-08-31 | 东北大学 | A kind of Rare-Earth Extraction Process dynamic operation control method based on data-driven |
| CN106502225A (en) * | 2016-11-10 | 2017-03-15 | 中铝广西国盛稀土开发有限公司 | The information gathering of Rare Earth Production process materials and analysis intelligence control system |
| CN107883046A (en) * | 2017-11-26 | 2018-04-06 | 曾小真 | A kind of rare earth processing volume control device |
| CN107883046B (en) * | 2017-11-26 | 2019-05-17 | 鲍必道 | Volume control device is used in a kind of processing of rare earth |
| CN108916014A (en) * | 2018-08-09 | 2018-11-30 | 南通鑫弘电梯产品有限公司 | A kind of oil pipe oil stream amount can automatically adjust oil pump |
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Application publication date: 20110914 |