CN108722688A - A kind of decanter centrifuge differential controlled system with self-regulation - Google Patents
A kind of decanter centrifuge differential controlled system with self-regulation Download PDFInfo
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- CN108722688A CN108722688A CN201810508112.6A CN201810508112A CN108722688A CN 108722688 A CN108722688 A CN 108722688A CN 201810508112 A CN201810508112 A CN 201810508112A CN 108722688 A CN108722688 A CN 108722688A
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- auxiliary
- auxiliary motor
- motor
- differential
- control device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/10—Control of the drive; Speed regulating
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- Centrifugal Separators (AREA)
Abstract
The invention discloses a kind of decanter centrifuge differential controlled system with self-regulation, differential adjusting control device is connect with primary transducer, auxiliary frequency converter, charging frequency converter, current sensing means respectively, the first auxiliary motor current threshold is preset in differential adjusting control device, then auxiliary motor real-time operating current value is compared by differential adjusting control device with the first auxiliary motor current threshold, and controlling auxiliary frequency converter according to the comparison result adjusts auxiliary motor working frequency and/or control charging frequency converter adjusting charging motor working frequency.Pass through the decanter centrifuge differential controlled system with self-regulation of above-mentioned optimization design, by the way that differential adjusting control device is arranged, it can be according to the working condition of conveying screw mechanism inside centrifuge, the charging of the rotating speed and feed pump of conveying screw mechanism is adjusted in real time, to ensure differential that centrifuge normally detaches, prevent to block, improves separative efficiency.
Description
Technical field
The present invention relates to decanter centrifuge technical field more particularly to a kind of decanter centrifuge differential auto-adjustment control systems
System.
Background technology
The control system that general horizontal spiral discharge sedimentation centrifuge uses, differential cannot with feed size or into
Expect the change of concentration and automatically adjust differential, causes centrifuge separating effect unstable, or even occur normally detaching
Or there is the case where putty.
Invention content
To solve technical problem present in background technology, the present invention proposes a kind of decanter centrifuge differential automatic adjustment control
System processed.
A kind of decanter centrifuge differential controlled system with self-regulation proposed by the present invention, including：Bowl, conveying spiral shell
It revolves mechanism, feed pump, main motor, auxiliary motor, charging motor, primary transducer, auxiliary frequency converter, charging frequency converter, differential and adjusts control
Device processed；
Main motor is connect with bowl for driving bowl to rotate, and primary transducer connect with main motor and is used for
Adjust main motor working frequency；
Auxiliary motor is connect with conveying screw mechanism for driving conveying screw mechanism to rotate, and auxiliary frequency converter is connect with auxiliary motor
For adjusting auxiliary motor working frequency, auxiliary motor is equipped with the current detecting for detecting auxiliary motor real-time operating current value and fills
It sets；
Charging motor is connect with feed pump for driving feed pump to feed, and charging frequency converter is connect with charging motor for adjusting
Save charging motor working frequency；
Differential adjusting control device is connect with primary transducer, auxiliary frequency converter, charging frequency converter, current sensing means respectively, poor
Velocity modulation section controller obtains main motor working frequency from primary transducer and obtains auxiliary motor real time execution from current sensing means
The first auxiliary motor current threshold is calculated according to main motor working frequency in current value, differential adjusting control device, then differential tune
Auxiliary motor real-time operating current value is compared by section controller with the first auxiliary motor current threshold, is relatively tied according to described
Fruit controls auxiliary frequency converter and adjusts auxiliary motor working frequency and/or control charging frequency converter adjusting charging motor working frequency.
Preferably, when main motor working frequency is steady state value, the first auxiliary motor electric current is preset in differential adjusting control device
Auxiliary motor real-time operating current value is compared by threshold value, differential adjusting control device with the first auxiliary motor current threshold, when
When auxiliary motor real-time operating current value is more than the first auxiliary motor current threshold, differential adjusting control device controls auxiliary motor work
Frequency reduces.
Preferably, when auxiliary motor real-time operating current value is less than the first auxiliary motor current threshold, differential adjusts control
Device control auxiliary motor working frequency processed increases.
Preferably, the second auxiliary motor current threshold, the second auxiliary motor current threshold are preset in differential adjusting control device
More than the first auxiliary motor current threshold, differential adjusting control device is by auxiliary motor real-time operating current value and the described second auxiliary electricity
Machine current threshold is compared, when auxiliary motor real-time operating current value is more than the second auxiliary motor current threshold, differential tune
It saves controller control charging frequency converter and closes charging motor.
Preferably, feed pump is equipped with the flowmeter for detecting feed rate, and differential adjusting control device connects with flowmeter
Connect, differential adjusting control device according to the feed rate and main motor working frequency that are detected obtain the first auxiliary motor current threshold and
Second auxiliary motor current threshold.
Preferably, differential adjusting control device uses PID controller.
Preferably, main motor and charging motor are all made of threephase asynchronous machine, and auxiliary motor uses variable-frequency motor.
In the present invention, the decanter centrifuge differential controlled system with self-regulation proposed, differential adjusting control device respectively with
Primary transducer, auxiliary frequency converter, charging frequency converter, current sensing means connect, and the first auxiliary motor is preset in differential adjusting control device
Current threshold, then differential adjusting control device auxiliary motor real-time operating current value and the first auxiliary motor current threshold are carried out
Compare, according to the comparison result control auxiliary frequency converter adjust auxiliary motor working frequency and/or control charging frequency converter adjust into
Expect motor working frequency.By the decanter centrifuge differential controlled system with self-regulation of above-mentioned optimization design, by the way that differential is arranged
Adjusting control device, can according to the working condition of conveying screw mechanism inside centrifuge, rotating speed to conveying screw mechanism and
The charging of feed pump is adjusted in real time, to ensure differential that centrifuge normally detaches, prevents to block, and improves separation effect
Rate.
Description of the drawings
Fig. 1 is a kind of attachment structure schematic diagram of decanter centrifuge differential controlled system with self-regulation proposed by the present invention.
Specific implementation mode
As shown in FIG. 1, FIG. 1 is a kind of connection knots of decanter centrifuge differential controlled system with self-regulation proposed by the present invention
Structure schematic diagram.
Referring to Fig.1, a kind of decanter centrifuge differential controlled system with self-regulation proposed by the present invention, including：Centrifugal basket
Drum, conveying screw mechanism, feed pump, main motor, auxiliary motor, charging motor, primary transducer, auxiliary frequency converter, charging frequency converter, difference
Velocity modulation section controller；
Main motor is connect with bowl for driving bowl to rotate, and primary transducer connect with main motor and is used for
Adjust main motor working frequency；
Auxiliary motor is connect with conveying screw mechanism for driving conveying screw mechanism to rotate, and auxiliary frequency converter is connect with auxiliary motor
For adjusting auxiliary motor working frequency, auxiliary motor is equipped with the current detecting for detecting auxiliary motor real-time operating current value and fills
It sets；
Charging motor is connect with feed pump for driving feed pump to feed, and charging frequency converter is connect with charging motor for adjusting
Save charging motor working frequency；
Differential adjusting control device is connect with primary transducer, auxiliary frequency converter, charging frequency converter, current sensing means respectively, poor
Velocity modulation section controller obtains main motor working frequency from primary transducer and obtains auxiliary motor real time execution from current sensing means
Current value presets the first auxiliary motor current threshold in differential adjusting control device, and then differential adjusting control device is real-time by auxiliary motor
Running current value is compared with the first auxiliary motor current threshold, and it is auxiliary to control auxiliary frequency converter adjusting according to the comparison result
Motor working frequency and/or control charging frequency converter adjust charging motor working frequency.
In the present embodiment, the decanter centrifuge differential controlled system with self-regulation proposed, differential adjusting control device point
It is not connect with primary transducer, auxiliary frequency converter, charging frequency converter, current sensing means, it is auxiliary that first is preset in differential adjusting control device
Current of electric threshold value, then differential adjusting control device is by auxiliary motor real-time operating current value and the first auxiliary motor current threshold
It is compared, controlling auxiliary frequency converter according to the comparison result adjusts auxiliary motor working frequency and/or control charging frequency converter tune
Save charging motor working frequency.By the decanter centrifuge differential controlled system with self-regulation of above-mentioned optimization design, pass through setting
Differential adjusting control device, can be according to the working condition of conveying screw mechanism inside centrifuge, to the rotating speed of conveying screw mechanism
And the charging of feed pump is adjusted in real time, to ensure differential that centrifuge normally detaches, prevents to block, and is improved point
From efficiency.
In a specific embodiment, for the ease of reliably being controlled the rotation of conveying screw mechanism, when main motor works
When frequency is steady state value, the first auxiliary motor current threshold is preset in differential adjusting control device, differential adjusting control device is by auxiliary motor
Real-time operating current value is compared with the first auxiliary motor current threshold, when auxiliary motor real-time operating current value is more than described
When the first auxiliary motor current threshold, differential adjusting control device controls auxiliary motor working frequency and reduces；Due to conveying screw mechanism sheet
The absolute speed drop of body is low, to make the relative rotation speed between conveying helical structure and bowl and speed discrepancy increase, allows
Conveying screw mechanism pusher number per minute is more, and to reduce the solid slag being deposited in rotary drum, it is negative to reduce spiral conveyer structure
Lotus, and then the auxiliary motor electric current of spiral conveyer structure is driven to reduce and gradually return to normal value；Conversely, working as auxiliary motor real time execution
When current value is less than the first auxiliary motor current threshold, differential adjusting control device controls auxiliary motor working frequency and increases,；Make defeated
Material screw mechanism pusher number reduces, and a small amount of slag of the interior sedimentation accumulation of rotary drum is allowed slowly to be discharged, thus with the continuous accumulation of slag,
Subsidiary engine electric current gradually increases and is restored to the first auxiliary motor current threshold normally set.
In order to further be protected to auxiliary motor, the second auxiliary motor current threshold, institute are preset in differential adjusting control device
It states the second auxiliary motor current threshold and is more than the first auxiliary motor current threshold, differential adjusting control device is by auxiliary motor real time execution
Current value is compared with the second auxiliary motor current threshold, when auxiliary motor real-time operating current value is more than the described second auxiliary electricity
When machine current threshold, differential adjusting control device controls charging frequency converter and closes charging motor, prevents auxiliary motor overload shutdown.
In other specific implementation modes, feed pump is equipped with the flowmeter for detecting feed rate, and differential adjusts control
Device processed is connect with flowmeter, and differential adjusting control device show that first is auxiliary according to the feed rate and main motor working frequency that are detected
Current of electric threshold value and the second auxiliary motor current threshold.
In order to ensure to accurately control to system, in the specific choice mode of each component, differential adjusting control device uses
PID controller, PID controller are proportional-integral derivative controller.
In the specific choice mode of motor, main motor and charging motor are all made of threephase asynchronous machine, and auxiliary motor uses
Variable-frequency motor.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of decanter centrifuge differential controlled system with self-regulation, which is characterized in that including：Bowl, conveying spiral
Mechanism, feed pump, main motor, auxiliary motor, charging motor, primary transducer, auxiliary frequency converter, charging frequency converter, differential adjusting control
Device；
Main motor is connect with bowl for driving bowl to rotate, and primary transducer is connect with main motor for adjusting
Main motor working frequency；
Auxiliary motor is connect with conveying screw mechanism for driving conveying screw mechanism to rotate, and auxiliary frequency converter is connect with auxiliary motor to be used for
Auxiliary motor working frequency is adjusted, auxiliary motor is equipped with the current sensing means for detecting auxiliary motor real-time operating current value；
Charging motor is connect with feed pump for driving feed pump to feed, charging frequency converter connect with charging motor for adjust into
Expect motor working frequency；
Differential adjusting control device is connect with primary transducer, auxiliary frequency converter, charging frequency converter, current sensing means respectively, differential tune
Controller is saved to obtain main motor working frequency from primary transducer and obtain auxiliary motor real-time operating current from current sensing means
Value presets the first auxiliary motor current threshold in differential adjusting control device, and then differential adjusting control device is by auxiliary motor real time execution
Current value is compared with the first auxiliary motor current threshold, and controlling auxiliary frequency converter according to the comparison result adjusts auxiliary motor
Working frequency and/or control charging frequency converter adjust charging motor working frequency.
2. decanter centrifuge differential controlled system with self-regulation according to claim 1, which is characterized in that when main motor work
When working frequency is steady state value, the first auxiliary motor current threshold is preset in differential adjusting control device, differential adjusting control device is by auxiliary electricity
Machine real-time operating current value is compared with the first auxiliary motor current threshold, when auxiliary motor real-time operating current value is more than institute
When stating the first auxiliary motor current threshold, differential adjusting control device controls auxiliary motor working frequency and reduces.
3. decanter centrifuge differential controlled system with self-regulation according to claim 2, which is characterized in that when auxiliary motor reality
When Shi Yunhang current values are less than the first auxiliary motor current threshold, differential adjusting control device controls auxiliary motor working frequency and increases
Greatly.
4. decanter centrifuge differential controlled system with self-regulation according to claim 2, which is characterized in that differential adjusts control
The second auxiliary motor current threshold is preset in device processed, the second auxiliary motor current threshold is more than the first auxiliary motor current threshold
Value, auxiliary motor real-time operating current value is compared by differential adjusting control device with the second auxiliary motor current threshold, when auxiliary
When motor real-time operating current value is more than the second auxiliary motor current threshold, differential adjusting control device controls charging frequency converter and closes
Close charging motor.
5. decanter centrifuge differential controlled system with self-regulation according to claim 1, which is characterized in that set on feed pump
It is useful for the flowmeter of detection feed rate, differential adjusting control device connect with flowmeter, and differential adjusting control device is according to being examined
The feed rate and main motor working frequency of survey obtain the first auxiliary motor current threshold and the second auxiliary motor current threshold.
6. decanter centrifuge differential controlled system with self-regulation according to claim 1, which is characterized in that differential adjusts control
Device processed uses PID controller.
7. decanter centrifuge differential controlled system with self-regulation according to claim 1, which is characterized in that main motor and into
Material motor is all made of threephase asynchronous machine, and auxiliary motor uses variable-frequency motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508112.6A CN108722688A (en) | 2018-05-24 | 2018-05-24 | A kind of decanter centrifuge differential controlled system with self-regulation |
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| CN201810508112.6A CN108722688A (en) | 2018-05-24 | 2018-05-24 | A kind of decanter centrifuge differential controlled system with self-regulation |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110918272A (en) * | 2019-12-02 | 2020-03-27 | 上海市离心机械研究所有限公司 | Control method for preventing three-phase centrifuge special for oil sludge from being blocked |
| CN111974559A (en) * | 2020-08-24 | 2020-11-24 | 杭州乐垚生物科技有限公司 | Speed-limiting transmission device for stepless regulation of rotating speed of biological cell centrifuge |
| CN113843054A (en) * | 2021-09-27 | 2021-12-28 | 江苏庆丰环保科技股份有限公司 | Efficient spiral shell filters formula centrifuge for sleeping in |
| CN114039518A (en) * | 2021-10-26 | 2022-02-11 | 中信重工机械股份有限公司 | Intelligent stepping adjusting method of large ball press based on current control |
| CN114308416A (en) * | 2020-09-29 | 2022-04-12 | 中石化石油工程技术服务有限公司 | Intelligent control device and method for horizontal screw centrifuge |
| CN115672576A (en) * | 2022-11-14 | 2023-02-03 | 江苏东邦机械有限公司 | Double closed-loop operation control system of horizontal screw centrifuge based on fuzzy self-adaptation |
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| CN101079590A (en) * | 2006-05-23 | 2007-11-28 | 上海市离心机械研究所有限公司 | A speed difference control system of dual frequency converter and its control method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110918272A (en) * | 2019-12-02 | 2020-03-27 | 上海市离心机械研究所有限公司 | Control method for preventing three-phase centrifuge special for oil sludge from being blocked |
| CN111974559A (en) * | 2020-08-24 | 2020-11-24 | 杭州乐垚生物科技有限公司 | Speed-limiting transmission device for stepless regulation of rotating speed of biological cell centrifuge |
| CN111974559B (en) * | 2020-08-24 | 2021-07-23 | 南京宇漾高新科技有限公司 | Speed-limiting transmission device for stepless regulation of rotating speed of biological cell centrifuge |
| CN114308416A (en) * | 2020-09-29 | 2022-04-12 | 中石化石油工程技术服务有限公司 | Intelligent control device and method for horizontal screw centrifuge |
| CN113843054A (en) * | 2021-09-27 | 2021-12-28 | 江苏庆丰环保科技股份有限公司 | Efficient spiral shell filters formula centrifuge for sleeping in |
| CN114039518A (en) * | 2021-10-26 | 2022-02-11 | 中信重工机械股份有限公司 | Intelligent stepping adjusting method of large ball press based on current control |
| CN115672576A (en) * | 2022-11-14 | 2023-02-03 | 江苏东邦机械有限公司 | Double closed-loop operation control system of horizontal screw centrifuge based on fuzzy self-adaptation |
| CN115672576B (en) * | 2022-11-14 | 2023-08-22 | 江苏东邦机械有限公司 | Double-closed-loop operation control system of horizontal decanter centrifuge based on fuzzy self-adaption |
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Application publication date: 20181102 |
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