CN105167163A - Control system for microwave tobacco stem expanding equipment - Google Patents
Control system for microwave tobacco stem expanding equipment Download PDFInfo
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- CN105167163A CN105167163A CN201510482445.2A CN201510482445A CN105167163A CN 105167163 A CN105167163 A CN 105167163A CN 201510482445 A CN201510482445 A CN 201510482445A CN 105167163 A CN105167163 A CN 105167163A
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Abstract
The invention discloses a control system and a control method for microwave tobacco stem expanding equipment. The control system comprises a programmable logic controller PLC, a visible control interface and a group of magnetrons. The visible control interface is connected with the programmable logic controller PLC, and the group of magnetrons is arranged in a microwave tobacco stem expander and is connected with the programmable logic controller PLC; the programmable logic controller PLC comprises a group of PID (proportion, integration and differentiation) controllers, and power of the microwave tobacco stem expander can be continuously regulated and controlled by one-to-one power closed-loop control systems; each power closed-loop control system comprises the corresponding magnetron, a power transmitter, the corresponding PID controller and a power controller which are sequentially connected with one another. The control system and the control method have the advantages that the control system is high in microwave power density and heating speed, low in energy consumption and easy to maintain, the microwave tobacco stem expanding equipment can be automatically controlled, the magnetrons are difficult to burn, requirements of professional, large-scale and continuous production can be met, and manufactured expanded tobacco stem products are stable in quality.
Description
Technical field
The present invention relates to offal microwave expansion apparatus control system technical field.
Technical background
Along with modern tobacco industrial expansion, the security of tobacco product and economy more and more receive the concern of people.Expanded cut stem after processing separately, because it has outstanding advantage, its using value is day by day highlighted, main manifestations is: expanded cut stem can reduce the tar content of cigarette products effectively, improves the security of cigarette products; After expansion process, the bitter taste of offal, pungent, excitant and assorted gas etc. reduce significantly, improve the quality of cigarette products; Expanded cut stem has higher Filling power, is joined in cigarette composition and can greatly reduce costs, and increases enterprise profit.Therefore, in cigarette primary processing production process, about have the offal of 20% ~ 30% to need to make stem and be incorporated in pipe tobacco, expanded cut stem has been applied in the production of Modern cigarette industry on a large scale.Utilize microwave expansion method process offal to be a kind of novel technology, the quality preparing stem is more excellent, and cost is low, is unanimously admitted in the industry, has very strong competitiveness.At present, serious restriction microwave bulking process offal technology plays huge applications and to be worth and the key issue of economic benefit is the research and development of offal microwave bulking equipment, especially can meet the offal microwave bulking equipment of the specialization of actual production requirement, maximization and serialization.Chinese patent CN102326858A discloses a kind of roller type tobacco stalk continuous microwave expansion device, many wave source many feedbacks mouth non-coherent power synthetic methods are adopted to obtain high-power, substantially continuous prodution can be carried out, but do not relate to the content that control system is relevant, owing to understanding not to microwave device and system discrete feature thereof, adopt its power of method of dividision into groups Regulation Control, each magnetron is exerted oneself serious uneven, high output magnetron is caused frequently to burn, maintenance cost is high, overall efficiency can not get playing, run under can only maintaining low-power operating mode, do not reach the target of maximization steady production far away.Chinese patent CN103945586A discloses a kind of microwave mode excitation agitating heating method and heater thereof, it is still in fact power control system magnetron being dropped into/excise by a kind of discrete type part magnetron total power that combination takes turns to operate by computer, only have part magnetron to participate in work simultaneously, this not only can reduce the overall power density of applicator, overall efficiency declines, the more important thing is and can the uniformity of the applicator internal electric field through optimizing be made because of the quantity of magnetron (energy regenerative feedback mouth) and the change of position participating in work to be destroyed, product quality is had an impact.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, provide that a kind of Microwave Power Density is large, firing rate is fast, energy consumption is low, can automatically control, magnetron not easily burns, be easy to safeguard, specialization, maximization and continuous prodution requirement, the brand-new microwave stem expansion equipment control system of expanded cabo constant product quality for preparing can be realized.
Object of the present invention is achieved through the following technical solutions:
A control system for microwave stem expansion equipment, includes programmable controller PLC, the Visible human plan interface connecting programmable controller PLC, the one group of magnetron be connected with programmable controller PLC be arranged in microwave cabo expansion device; Described programmable controller PLC includes one group of PID controller, and adopts man-to-man power closed-loop control system to carry out continuous regulable control to microwave cabo expansion device power; Each power closed-loop control system is made up of the magnetron be linked in sequence, power transducer, PID controller, power controller; The power of corresponding magnetron is set from visualization interface, corresponding PID controller is given by the power output signal feedback of corresponding magnetron by power transducer, this feedback signal compares with setting power signal by PID controller, and after PID arithmetic, passes through power controller continuous action in magnetron.
Magnetron of the present invention is arranged at the leading portion of microwave cabo expansion device, stage casing and back segment respectively.The leading portion cross section, the stage casing cross section that are arranged at microwave cabo expansion device are different with the distribution density of the magnetron on back segment cross section.
The present invention adopts man-to-man power closed-loop control system and control mode; preferential employing power becomes the object that send negative-feedback as controlling magnetron power and carries out PID and regulates continuously; the foundation that current limit is protected as magnetron; each magnetron is exerted oneself uniformity, stable; magnetron frequently burns phenomenon and disappears; whole magnetron participates in work simultaneously; overall efficiency is not fully exerted; in microwave cabo expansion device, magnetic distribution is more even, and expansion rate and the expansion uniformity of producing offal are all improved.Owing to taking man-to-man power closed-loop control measure, the grouping on magnetron applicator and microwave cabo expansion device can be made programmable, can according to technical process need soft programming is carried out to it, realize expansion process process " before, during and after " requirement that different process section power density is different, to the strong adaptability of technological requirement change.Become send device owing to have employed power, control algolithm is simplified, reduces requirement to PLC, improve its speed of service and reliability.The uniformity of microwave cabo expansion device internal electric field is good, and Microwave Power Density is large, and firing rate is fast, automatic control can be realized, simple to operate, time saving and energy saving, significantly reduce energy consumption, treatment effeciency is very high, really achieves actual production requirements such as can meeting specialization, maximization and serialization.
Accompanying drawing explanation
Fig. 1 is the present invention's man-to-man power closed-loop control system schematic diagram;
Fig. 2 is the axial cross section packet layout schematic diagram of magnetron at microwave cabo expansion device.
Detailed description of the invention
As shown in Figure 1, the control system of a kind of microwave stem expansion equipment of the present invention includes programmable controller PLC, the Visible human plan interface connecting programmable controller PLC, the one group of magnetron be connected with programmable controller PLC be arranged in microwave cabo expansion device; Described programmable controller PLC includes one group of PID controller (in PLC soft control element), and adopts man-to-man power closed-loop control system to carry out continuous regulable control to microwave cabo expansion device power; The loop that each power closed-loop control system is made up of the magnetron be linked in sequence, power transducer, PID controller, power controller, the magnetron quantity that concrete loop quantity n needs according to production output is determined.Magnetron is arranged at the leading portion of microwave cabo expansion device, stage casing and back segment respectively.As shown in Figure 2, the present invention preferentially adopts the axial cross section method of dividision into groups to carry out soft grouping to the magnetron in applicator, cross section 1, cross section 2 is divided into according to concrete loop quantity n ..., cross section n-1, cross section n, the distribution density being arranged at the magnetron on the leading portion cross section of microwave cabo expansion device, stage casing cross section and back segment cross section can be different.During control, the duty (large I of namely exerting oneself regulates continuously) being arranged at each magnetron on the leading portion cross section of microwave cabo expansion device, stage casing cross section and back segment cross section can pass through programming Control, the microwave power summation by the magnetron on programming Control leading portion cross section, stage casing cross section and back segment cross section just can be realized with this, reach the object controlling each process section Microwave Power Density, thus realize expansion process process leading portion, technical process stage casing, requirement that technical process back segment different process Microwave Power Density is different.
When the present invention works, the power of corresponding magnetron is set from visualization interface, corresponding PID controller is given by the power output signal feedback of corresponding magnetron by power transducer, this feedback signal compares with setting power signal by PID controller, and after PID arithmetic, pass through power controller continuous action in magnetron, make magnetron power all-the-time stable in setting power state, thus make the overall power of microwave cabo expansion device be stabilized in setting power state.The foundation that current limit is protected as magnetron; each magnetron is exerted oneself uniformity, stable; magnetron frequently burns phenomenon and disappears; whole magnetron ginseng participates in work simultaneously; overall efficiency is not fully exerted; in applicator, magnetic distribution is more even, and expansion rate and the expansion uniformity of producing offal are all improved.
The present invention is carrying out microwave device and system discrete feature thereof analysing in depth on the basis of understanding, adopt the concept of distribute control, with man-to-man power close-loop control mode, continuous regulable control is carried out to offal microwave expansion plant capacity, make offal microwave expansion plant capacity be stabilized in setting claimed condition.The present invention thoroughly solves patent CN102326858A and adopts the method for dividision into groups to control magnetron power in its group by the anode voltage of adjustment supply magnetron, each magnetron is exerted oneself serious uneven, high output magnetron is caused frequently to burn, maintenance cost is high, overall efficiency can not get the technical barrier played, and really achieves the cartridge type stalk continuous microwave expansion device that can meet the actual production requirements such as specialization, maximization and serialization.Because power regulates continuously, all magnetrons all participate in work simultaneously, the overall power density of applicator, overall efficiency are high, the more important thing is and can not destroy the uniformity of applicator internal electric field through optimizing because of the change of the quantity and position that participate in magnetron (energy regenerative feedback mouth), and product quality is had an impact.
Claims (5)
1. the control system of a microwave stem expansion equipment, it is characterized in that, include programmable controller PLC, the Visible human plan interface connecting programmable controller PLC, the one group of magnetron be connected with programmable controller PLC be arranged in microwave cabo expansion device; Described programmable controller PLC includes one group of PID controller, and adopts man-to-man power closed-loop control system to carry out continuous regulable control to microwave cabo expansion device power; Each power closed-loop control system is made up of the magnetron be linked in sequence, power transducer, PID controller, power controller; The power of corresponding magnetron is set from visualization interface, corresponding PID controller is given by the power output signal feedback of corresponding magnetron by power transducer, this feedback signal compares with setting power signal by PID controller, and after PID arithmetic, passes through power controller continuous action in magnetron.
2. the control system of a kind of microwave stem expansion equipment according to claim 1, is characterized in that, described magnetron is arranged at the leading portion of microwave cabo expansion device, stage casing and back segment respectively.
3. the control system of a kind of microwave stem expansion equipment according to claim 2, is characterized in that, the leading portion cross section, the stage casing cross section that are arranged at microwave cabo expansion device are different with the distribution density of the magnetron on back segment cross section.
4. the control method of the control system of a kind of microwave stem expansion equipment as described in claim 1 or 2 or 3, it is characterized in that, the power of corresponding magnetron is set from visualization interface, corresponding PID controller is given by the power output signal feedback of corresponding magnetron by power transducer, this feedback signal compares with setting power signal by PID controller, and after PID arithmetic, pass through power controller continuous action in magnetron, by magnetron power all-the-time stable in setting power state, and then the overall power of microwave cabo expansion device is made to be stabilized in setting power state.
5. the control method of the control system of a kind of microwave stem expansion equipment as claimed in claim 4, it is characterized in that, the duty being arranged at the magnetron on the leading portion cross section of microwave cabo expansion device, stage casing cross section and back segment cross section, by programming Control, controls the Microwave Power Density on leading portion cross section, stage casing cross section and back segment cross section with this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510482445.2A CN105167163B (en) | 2015-08-03 | 2015-08-03 | A kind of control system of microwave stem expansion equipment |
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| CN201510482445.2A CN105167163B (en) | 2015-08-03 | 2015-08-03 | A kind of control system of microwave stem expansion equipment |
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| CN105167163A true CN105167163A (en) | 2015-12-23 |
| CN105167163B CN105167163B (en) | 2017-04-05 |
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Citations (11)
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| US3742795A (en) * | 1972-03-15 | 1973-07-03 | Industrial Nucleonics Corp | Cigarette dense end monitoring and controlling apparatus |
| JPS6024175A (en) * | 1983-07-21 | 1985-02-06 | 日本たばこ産業株式会社 | Laminar size controller in tobacco treating process |
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| CN201005012Y (en) * | 2007-03-16 | 2008-01-16 | 中国烟草总公司郑州烟草研究院 | Cut tobacco micro-wave drying equipment |
| CN101822415A (en) * | 2010-05-19 | 2010-09-08 | 中国烟草总公司郑州烟草研究院 | Cut leaf tobacco microwave vacuum drying equipment |
| CN102564155A (en) * | 2012-03-06 | 2012-07-11 | 湖南阳东微波科技有限公司 | Method and system for temperature control of industrial microwave kiln |
| CN102768549A (en) * | 2012-08-07 | 2012-11-07 | 湖南阳东微波科技有限公司 | Temperature control method and system of microwave oven, and microwave oven |
| CN103017217A (en) * | 2012-12-21 | 2013-04-03 | 敦泰科技有限公司 | Micro-wave oven control method, control equipment and micro-wave oven |
| CN103220834A (en) * | 2013-04-22 | 2013-07-24 | 刘新保 | Microwave oven magnetron preheating controlling method and controlling circuit |
| CN203928703U (en) * | 2014-07-08 | 2014-11-05 | 昆明理工大学 | A kind of microwave dynamic high temperature continuous calcining equipment |
| CN204861133U (en) * | 2015-08-03 | 2015-12-16 | 昆明鸾宇科技有限公司 | Control system of microwave offal bloating plant |
-
2015
- 2015-08-03 CN CN201510482445.2A patent/CN105167163B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3742795A (en) * | 1972-03-15 | 1973-07-03 | Industrial Nucleonics Corp | Cigarette dense end monitoring and controlling apparatus |
| JPS6024175A (en) * | 1983-07-21 | 1985-02-06 | 日本たばこ産業株式会社 | Laminar size controller in tobacco treating process |
| CN1955553A (en) * | 2005-10-25 | 2007-05-02 | 乐金电子(天津)电器有限公司 | Control method of food roasting procedure of microwave oven |
| CN201005012Y (en) * | 2007-03-16 | 2008-01-16 | 中国烟草总公司郑州烟草研究院 | Cut tobacco micro-wave drying equipment |
| CN101822415A (en) * | 2010-05-19 | 2010-09-08 | 中国烟草总公司郑州烟草研究院 | Cut leaf tobacco microwave vacuum drying equipment |
| CN102564155A (en) * | 2012-03-06 | 2012-07-11 | 湖南阳东微波科技有限公司 | Method and system for temperature control of industrial microwave kiln |
| CN102768549A (en) * | 2012-08-07 | 2012-11-07 | 湖南阳东微波科技有限公司 | Temperature control method and system of microwave oven, and microwave oven |
| CN103017217A (en) * | 2012-12-21 | 2013-04-03 | 敦泰科技有限公司 | Micro-wave oven control method, control equipment and micro-wave oven |
| CN103220834A (en) * | 2013-04-22 | 2013-07-24 | 刘新保 | Microwave oven magnetron preheating controlling method and controlling circuit |
| CN203928703U (en) * | 2014-07-08 | 2014-11-05 | 昆明理工大学 | A kind of microwave dynamic high temperature continuous calcining equipment |
| CN204861133U (en) * | 2015-08-03 | 2015-12-16 | 昆明鸾宇科技有限公司 | Control system of microwave offal bloating plant |
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| CN105167163B (en) | 2017-04-05 |
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