CN102644786A - Method for performing segmentation automatic control on valve - Google Patents
Method for performing segmentation automatic control on valve Download PDFInfo
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- CN102644786A CN102644786A CN2012100308206A CN201210030820A CN102644786A CN 102644786 A CN102644786 A CN 102644786A CN 2012100308206 A CN2012100308206 A CN 2012100308206A CN 201210030820 A CN201210030820 A CN 201210030820A CN 102644786 A CN102644786 A CN 102644786A
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Abstract
The invention discloses a method for performing segmentation automatic control on a valve. The control method is a method for performing the segmentation automatic control on the valve. The specific practice adopted by the method is that the valve opening process is divided into five time ranges, and the opening rate of the valve at the five time ranges is controlled, thereby, the charging air flow is controlled, and the pressure is controlled to slowly and stably rise in the pressure rising process. By adopting the method disclosed by the invention, the charging air flow and the charging pressure can be stably controlled, and the impact caused to a space division system because the air flow and the pressure are changed suddenly is avoided. Control parameters can also be modified at any time according to the changes of process conditions and different regulating valves so as to reach the control requirement, and moreover, the method can be conveniently transplanted to other systems with similar control requirements.
Description
Technical field
The invention belongs to technical field of automatic control, relate in particular to a kind of valve segmentation method of control automatically.
Background technique
Molecular sieve purifier is the key equipment of large-scale low pressure oxygenerator group, generally designs two molecular sieves, during a use; The another activating and regenerating; Switch and use, so the automatic switchover of sieve purification system control is most important, it is stable that it is related to the production of whole oxygenerator group.The molecular sieve activating and regenerating generally is divided into release, heating, cold blowing and four processes of pressurising; In the pressurising process, require the process of boosting slowly to carry out, avoid air flow to impact the molecular sieve bed; Bed is moved or rubs; Avoid into empty branch air quantity to change suddenly in addition, cause the fluctuation of technology, influence quality of product and output.
In production operation, the sieve purification system program arrives switching time, in time monitor the valve switch situation, otherwise the valve event that possibly occur unusual, do not open or situation such as not in place, therefore, must guarantee the security of system smooth running.
Summary of the invention
The object of the invention is to satisfy above-mentioned control requirement and a kind of controlling method is provided and on DCS (Distributed Control System) control system, realizes.
Technological scheme of the present invention is: the valve segmentation method of control automatically is that the valve segmentation is controlled automatically, and this method specifically is divided into two steps:
(1) program is prepared
Through dialog box be set pressurising cumulative time, Automatic Program is divided into 5 time periods with it, through dialog box time of valve event in each time period and corresponding aperture is set again; Concrete setting value is provided with according to the flow characteristics and the on-site actual situations of valve, and can adjust at any time;
(2) control procedure
When the pressurising program began, the solenoid valve of first step regulating and controlling valve got electric, makes modulating valve controlled; Second step, according to valve event time and the valve opening set in the very first time section, slow Open valve gradually; Up to reaching valve event time and aperture, keep this valve opening then, finish up to very first time section; Got into for the 3rd step, according to valve event time and the valve opening set in second time period, slow Open valve gradually once more; Up to reaching actuation time and the aperture that second time period of valve is provided with, keep this valve opening then, got into for the 4th step; Slow one by one Open valve finally reaches the setting aperture, steadily controls pressurising tolerance, reaches pressurising pressure, and control program finishes.
Said method is realized by the DCS programming, requires control stable, and parameter adjustment is convenient, can revise at any time according to system condition.
Advantage of the present invention is: (1) stability: program has been controlled pressurising tolerance and pressurising pressure stably according to the design of the Flow characteristics of valve, the impact of having avoided the unexpected variation of tolerance and pressure that space division system is caused; (2) flexibility: program is to design according to general program; The simple dialog box of providing convenience; Can change and different modulating valve according to process conditions, revise Control Parameter at any time, also can be transplanted to easily in the system that other similar control requires to reach the control requirement.
Description of drawings
Fig. 1 valve control setting dialog box;
Fig. 2 valve opening control graph.
Embodiment
Embodiment
The valve segmentation method of control automatically is that the valve segmentation is controlled automatically, and this method is undertaken by following two steps:
(1) program is prepared
Through dialog box be set pressurising cumulative time, Automatic Program is divided into 5 time periods with it, through dialog box time of valve event in each time period and corresponding aperture (like Fig. 1) is set again; Concrete setting value is provided with according to the flow characteristics and the on-site actual situations of valve, and can adjust at any time.
(2) control procedure
When the pressurising program began, the solenoid valve of first step regulating and controlling valve got electric, makes modulating valve controlled; Second step, according to valve event time and the valve opening set in the very first time section, slow Open valve gradually; Up to reaching valve event time and aperture, keep this valve opening then, finish up to very first time section; Got into for the 3rd step, according to valve event time and the valve opening set in second time period, slow Open valve gradually once more; Up to reaching actuation time and the aperture that second time period of valve is provided with, keep this valve opening then, got into for the 4th step; Slow one by one Open valve finally reaches the setting aperture, steadily controls pressurising tolerance, reaches pressurising pressure, and control program finishes.
Claims (2)
1. the automatic method of control of valve segmentation, this method is that the valve segmentation is controlled automatically, it is characterized in that it is divided into following two steps:
(1) program is prepared
Through dialog box be set pressurising cumulative time, Automatic Program is divided into 5 time periods with it, through dialog box time of valve event in each time period and corresponding aperture is set again; Concrete setting value is provided with according to the flow characteristics and the on-site actual situations of valve, and can adjust at any time;
(2) control procedure
When the pressurising program began, the solenoid valve of first step regulating and controlling valve got electric, makes modulating valve controlled; Second step, according to valve event time and the valve opening set in the very first time section, slow Open valve gradually; Up to reaching valve event time and aperture, keep this valve opening then, finish up to very first time section; Got into for the 3rd step, according to valve event time and the valve opening set in second time period, slow Open valve gradually once more; Up to reaching actuation time and the aperture that second time period of valve is provided with, keep this valve opening then, got into for the 4th step; Slow one by one Open valve finally reaches the setting aperture, steadily controls pressurising tolerance, reaches pressurising pressure, and control program finishes.
2. based on the automatic method of control of the described valve segmentation of claim 1, it is characterized in that it passes through the DCS programming and realize, require control stable, parameter adjustment is convenient, can revise at any time based on system condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100308206A CN102644786A (en) | 2012-02-13 | 2012-02-13 | Method for performing segmentation automatic control on valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100308206A CN102644786A (en) | 2012-02-13 | 2012-02-13 | Method for performing segmentation automatic control on valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102644786A true CN102644786A (en) | 2012-08-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100308206A Pending CN102644786A (en) | 2012-02-13 | 2012-02-13 | Method for performing segmentation automatic control on valve |
Country Status (1)
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| CN (1) | CN102644786A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1157981A (en) * | 1997-08-15 | 1999-03-02 | Daido Steel Co Ltd | Pressure reducing suction casting apparatus |
| JP2008009838A (en) * | 2006-06-30 | 2008-01-17 | High Frequency Heattreat Co Ltd | Control device for valve |
| CN101162396A (en) * | 2007-09-11 | 2008-04-16 | 中控科技集团有限公司 | Temperature control method and temperature control system |
| CN101566246A (en) * | 2009-05-15 | 2009-10-28 | 孟庆国 | Method for controlling valve opening degree of ammonia unit cold storage and controller |
| CN101768753A (en) * | 2008-12-29 | 2010-07-07 | 河北盛华化工有限公司 | Rapid combination method for chlorine gas and hydrogen gas of electrolysis bath |
| US20100252121A1 (en) * | 2007-12-05 | 2010-10-07 | Hideki Saito | Method and device for controlling pressure of vacuum container |
| CN101880741A (en) * | 2009-05-06 | 2010-11-10 | 鞍钢股份有限公司 | Double-speed air distributing method for blast furnace blower |
| CN201884758U (en) * | 2010-12-17 | 2011-06-29 | 天津伯思克仪表技术有限公司 | Intelligent electric operator used for controlling valve |
-
2012
- 2012-02-13 CN CN2012100308206A patent/CN102644786A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1157981A (en) * | 1997-08-15 | 1999-03-02 | Daido Steel Co Ltd | Pressure reducing suction casting apparatus |
| JP2008009838A (en) * | 2006-06-30 | 2008-01-17 | High Frequency Heattreat Co Ltd | Control device for valve |
| CN101162396A (en) * | 2007-09-11 | 2008-04-16 | 中控科技集团有限公司 | Temperature control method and temperature control system |
| US20100252121A1 (en) * | 2007-12-05 | 2010-10-07 | Hideki Saito | Method and device for controlling pressure of vacuum container |
| CN101768753A (en) * | 2008-12-29 | 2010-07-07 | 河北盛华化工有限公司 | Rapid combination method for chlorine gas and hydrogen gas of electrolysis bath |
| CN101880741A (en) * | 2009-05-06 | 2010-11-10 | 鞍钢股份有限公司 | Double-speed air distributing method for blast furnace blower |
| CN101566246A (en) * | 2009-05-15 | 2009-10-28 | 孟庆国 | Method for controlling valve opening degree of ammonia unit cold storage and controller |
| CN201884758U (en) * | 2010-12-17 | 2011-06-29 | 天津伯思克仪表技术有限公司 | Intelligent electric operator used for controlling valve |
Non-Patent Citations (2)
| Title |
|---|
| 刘熠 等: "阀门开度的数字化精确测量和控制", 《仪器仪表与检测技术》, vol. 23, no. 3, 30 March 2004 (2004-03-30) * |
| 王揽月 等: "浅谈分子筛充压时跟气量操作方法", 《中国产业》, no. 5, 15 May 2011 (2011-05-15) * |
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Application publication date: 20120822 |