CN210270593U - Novel automatic control system of centrifugal machine - Google Patents
Novel automatic control system of centrifugal machine Download PDFInfo
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- CN210270593U CN210270593U CN201920741468.4U CN201920741468U CN210270593U CN 210270593 U CN210270593 U CN 210270593U CN 201920741468 U CN201920741468 U CN 201920741468U CN 210270593 U CN210270593 U CN 210270593U
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Abstract
The utility model discloses a novel automatic control system of a centrifuge, which comprises a PLC controller and an operating state monitoring module, wherein the operating state monitoring module is used for acquiring operating parameters of a frequency converter, a motor and the centrifuge; the PLC stores a set value preset by a user, takes the set value and the operation parameters as input, outputs a control signal according to a preset reaction mode to adjust the operation state of the centrifuge, or outputs a state signal to display the operation state of equipment. The system is simple in structure, low in cost, simple in operation and high in automation degree, automatically controls the centrifugal machine, realizes one-key start and stop, monitors various operation parameters and operation states of the centrifugal machine on line at any time, conveniently inquires various operation fault information, automatically adjusts the feeding amount according to material characteristics, avoids the phenomenon that the centrifugal machine is blocked due to material characteristic change, improves the separation effect of the centrifugal machine, reduces the faults of the centrifugal machine and reduces the loss of the centrifugal machine.
Description
Technical Field
The utility model relates to an electrical control field especially relates to a novel automatic control system and control method of centrifuge.
Background
The centrifugal machine is widely applied to chemical, petroleum, food, pharmacy, mineral separation, coal, water treatment, ships and other departments, and in order to overcome the problem that the centrifugal machine is blocked due to the change of material characteristic parameters and achieve the best separation effect, users have higher and higher requirements on an automatic control system of the centrifugal machine, and the traditional simple circuit control cannot achieve the expected effect.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a novel automatic control system of a centrifuge, which comprises a main machine frequency converter, an auxiliary machine frequency converter, a main motor, an auxiliary motor and a centrifuge, wherein the main machine frequency converter drives the main motor to drive a centrifuge drum to rotate, and the auxiliary machine frequency converter drives the auxiliary motor to drive the centrifuge to rotate spirally; the system also comprises a PLC controller and an operation state monitoring module, wherein the operation state monitoring module is used for acquiring operation parameters of the frequency converter, the motor and the centrifuge; the PLC stores a set value preset by a user, takes the set value and the operation parameters as input, outputs a control signal according to a preset reaction mode to adjust the operation state of the centrifuge, or outputs a state signal to display the operation state of equipment.
Preferably, the running state monitoring module comprises a vibration sensor, and the vibration sensor is arranged on the centrifuge base and used for collecting vibration parameters of the centrifuge.
Preferably, the operation state monitoring module comprises a temperature sensor, and the temperature sensor is used for acquiring temperature parameters of a large-end bearing and a small-end bearing of the centrifuge.
Preferably, the operation state monitoring module comprises a material accumulation detection module, and the torque value of the centrifuge spiral is fed back in real time through an auxiliary machine frequency converter, and the material accumulation condition of the centrifuge is reflected by the torque value.
The automatic control system also comprises an HMI touch screen and a buzzer, wherein the HMI touch screen is used for monitoring various operation parameters and operation states of the centrifugal machine on line, inquiring various operation fault information and realizing one-key operation, and the buzzer is used for alarming and prompting. The centrifuge cleaning device further comprises a cleaning valve, one end of the cleaning valve is connected to the feed port of the centrifuge through a tee joint, and the other end of the cleaning valve is connected with an external cleaning water loop.
The beneficial effects of the utility model reside in that: the utility model provides a centrifuge automatic control system simple structure, low cost, easy operation, degree of automation is high, carry out automatic control to centrifuge, realize that a key opens and stops, various operational parameter and running state of online monitoring centrifuge at any time, conveniently inquire all kinds of operation fault information, according to material characteristic automatically regulated feeding volume, avoided centrifuge to change the phenomenon that makes centrifuge take place to block up because of material characteristic, improved centrifuge's separation effect, reduce centrifuge trouble, reduce centrifuge's loss.
Drawings
FIG. 1 is a schematic diagram of a novel automatic control system of a centrifuge;
FIG. 2 is a schematic diagram of an automatic mode process;
FIG. 3 is a schematic view of a cleaning mode process;
fig. 4 is a schematic diagram of the alarm information.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a novel automatic control system of a centrifuge comprises a main machine frequency converter, an auxiliary machine frequency converter, a main motor, an auxiliary motor and a centrifuge, wherein the main machine frequency converter drives the main motor to drive a centrifuge drum to rotate, and the auxiliary machine frequency converter drives the auxiliary motor to drive the centrifuge to spirally rotate; the system also comprises a PLC controller and an operation state monitoring module, wherein the operation state monitoring module is used for acquiring operation parameters of the frequency converter, the motor and the centrifuge; the PLC stores a set value preset by a user, takes the set value and the operation parameters as input, outputs a control signal according to a preset reaction mode to adjust the operation state of the centrifuge, or outputs a state signal to display the operation state of equipment.
The main machine frequency converter feeds back online parameters such as output current, voltage, frequency, torque and the like of a main motor and the running state in real time; the auxiliary frequency converter feeds back spiral torque in real time, the torque value indirectly reflects the solid-phase material accumulation condition, and simultaneously feeds back on-line parameters such as output current, voltage, frequency and torque of the auxiliary frequency converter and the running state.
Preferably, the running state monitoring module comprises a vibration sensor, and the vibration sensor is arranged on the centrifuge base and used for collecting vibration parameters of the centrifuge.
Preferably, the operation state monitoring module comprises a temperature sensor, and the temperature sensor is used for acquiring temperature parameters of a large-end bearing and a small-end bearing of the centrifuge.
Preferably, the operation state monitoring module comprises a material accumulation detection module, and the torque value of the centrifuge spiral is fed back in real time through an auxiliary machine frequency converter, and the material accumulation condition of the centrifuge is reflected by the torque value.
The automatic control system also comprises an HMI touch screen and a buzzer, wherein the HMI touch screen is used for monitoring various operation parameters and operation states of the centrifugal machine on line, inquiring various operation fault information and realizing one-key operation, and the buzzer is used for alarming and prompting. The centrifuge cleaning device further comprises a cleaning valve, one end of the cleaning valve is connected to the feed port of the centrifuge through a tee joint, and the other end of the cleaning valve is connected with an external cleaning water loop.
A novel automatic control method for a centrifuge is characterized in that a preset reaction mode is solidified into a PLC (programmable logic controller), the PLC stores a set value preset by a user, the set value and the operating parameter of centrifuge equipment are collected in real time, the set value and the operating parameter are used as input of the reaction mode, a control signal is output to adjust the operating state of the centrifuge, or a state signal is output to display the operating state of the equipment.
As shown in fig. 2, after the automatic mode is selected to start, the user selects a differential control mode or a torque control mode according to the requirement, the differential parameter or the torque parameter is used as the input of the reaction mode, and the output control signal adjusts the differential speed or the torque to form closed-loop control.
Differential parameter control in the starting process of equipment: after the automatic starting, starting an oil pump for lubrication, after the equipment is normally lubricated, starting an auxiliary machine after time delay, and simultaneously starting a main machine according to a set rotating speed value of the rotary drum; the auxiliary machine accelerates at a constant differential speed according to the main machine, so that the rotating speed of the rotary drum is equal to a set rotating speed value of the rotary drum, and the differential speed is equal to a set differential speed value.
After the centrifugal machine is started normally, whether the feeding pump is started or not is confirmed, the feeding pump is started according to the set rotating speed value of the feeding pump, and then the dosing pump is started. When the centrifuge normally operates, if the acquired torque parameter is greater than or equal to the torque alarm parameter, a control signal is output, and the rotating speed of a feed pump of the centrifuge is reduced; and when the torque parameter is smaller than the torque alarm parameter, the rotating speed of the centrifuge feeding pump is restored to the original rotating speed.
The differential speed control process comprises the following steps: in the operation process of the centrifugal machine, the rotating speed of the main motor is adjusted according to the set rotating speed set value of the rotary drum, so that the real-time value of the rotating speed of the rotary strand tends to the set rotating speed set value of the rotary drum; the rotation speed of the auxiliary motor is automatically adjusted according to the set value of the rotation speed of the rotary drum and the set value of the differential speed, so that the real-time value of the differential speed tends to the set value of the differential speed; in the differential parameter control process, if the torque value of the auxiliary machine of the centrifuge is larger than the alarm set value of the torque of the auxiliary machine, the system can automatically reduce the feeding amount, and after the torque value of the auxiliary machine of the centrifuge is recovered to be normal, the system automatically adjusts the feeding amount.
The torque parameter control process comprises the following steps: in the operation process of the centrifugal machine, the rotating speed of the main motor is adjusted according to the set rotating speed set value of the rotary drum, so that the real-time value of the rotating speed of the rotary strand tends to the set rotating speed set value of the rotary drum; the rotation speed of the auxiliary motor is automatically adjusted according to the acquired torque parameter, and when the torque parameter is greater than or less than the torque setting parameter, a control signal is output to adjust the spiral rotation speed of the centrifuge; enabling the acquired torque value of the auxiliary machine of the centrifuge to approach to a torque setting parameter; in the torque parameter control process, the actual differential speed of the centrifuge is limited between the differential speed setting upper limit and the differential speed setting lower limit; meanwhile, if the torque value of the auxiliary machine of the centrifuge is larger than the alarm set value of the torque of the auxiliary machine, the system can automatically reduce the feeding amount, and after the torque value of the auxiliary machine of the centrifuge is recovered to be normal, the system automatically adjusts the feeding amount.
Specifically, the torque parameter can be fed back by an auxiliary frequency converter to a torque value of a centrifuge spiral in real time, and the torque value is used for reflecting the material accumulation condition of the centrifuge. When the torque value is larger than the torque alarm set value, the material accumulation condition of the centrifuge is indicated, the feeding speed is reduced, and the operation pressure of the centrifuge is relieved.
If when the flocculation tank operates, when the liquid level detector in the flocculation tank detects that the liquid level is lower than the lower limit, the PLC stops the feeding pump and the dosing pump, closes the feeding valve, and feeds again after the liquid level of the flocculation tank returns to normal.
As shown in fig. 3, one cleaning process of the present application is: selecting a cleaning mode, starting an oil pump for lubrication, starting a centrifugal machine after time delay after normal lubrication of equipment is realized, setting opening time, closing time and circulation time after the centrifugal machine is started stably, and controlling the cleaning valve to be opened and closed by a PLC (programmable logic controller) to clean the equipment. And after the cleaning is finished, closing the centrifugal machine and the oil pump.
The utility model discloses gather the summary of centrifuge equipment part operating parameter as shown in figure 4, compare gained parameter and setting value including big/little end shaft temperature, big/little end vibration, host computer moment of torsion, burden auxiliary engine moment of torsion and differential etc. and send shutdown signal or alarm signal in line with the settlement condition, through HMI touch-sensitive screen display, various operating parameter and running state of on-line monitoring centrifuge inquire all kinds of operating failure information, realize a key operation, or utilize bee calling organ to report to the police.
It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the order of acts described, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and elements referred to are not necessarily required in this application.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a ROM, a RAM, etc.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (6)
1. A novel automatic control system of a centrifugal machine comprises a main machine frequency converter, an auxiliary machine frequency converter, a main motor, an auxiliary motor and the centrifugal machine, wherein the main machine frequency converter drives the main motor to drive a rotary drum of the centrifugal machine to rotate, and the auxiliary machine frequency converter drives the auxiliary motor to drive the centrifugal machine to rotate spirally; the system is characterized by also comprising a PLC (programmable logic controller) and an operation state monitoring module, wherein the operation state monitoring module is used for acquiring operation parameters of the frequency converter, the motor and the centrifuge; the PLC stores a set value preset by a user, takes the set value and the operation parameter as input, outputs a control signal to adjust the operation state of the centrifuge, or outputs a state signal to display the operation state of the equipment.
2. The system of claim 1, wherein the operation status monitoring module comprises a vibration sensor disposed on the centrifuge base for collecting vibration parameters of the centrifuge.
3. The new automatic control system of the centrifuge as claimed in claim 1, wherein the operation state monitoring module comprises a temperature sensor for collecting temperature parameters of the big end bearing and the small end bearing of the centrifuge.
4. The novel automatic control system of the centrifuge as claimed in claim 1, wherein the operation state monitoring module comprises a material accumulation detection module, a torque value of a centrifuge screw is fed back in real time through an auxiliary frequency converter, and the torque value is used for reflecting the material accumulation condition of the centrifuge.
5. The novel automatic control system of the centrifuge as claimed in claim 1, further comprising an HMI touch screen and a buzzer, wherein the HMI touch screen is used for monitoring the operation parameters and the operation state of the centrifuge on line, inquiring the operation fault information, and realizing one-key operation, and the buzzer is used for alarming and prompting.
6. The new automatic control system of centrifuge as claimed in claim 1, further comprising a purge valve, wherein one end of the purge valve is connected to the centrifuge inlet via a tee joint, and the other end is connected to an external purge water loop.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920741468.4U CN210270593U (en) | 2019-05-22 | 2019-05-22 | Novel automatic control system of centrifugal machine |
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| CN201920741468.4U CN210270593U (en) | 2019-05-22 | 2019-05-22 | Novel automatic control system of centrifugal machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045676A (en) * | 2019-05-22 | 2019-07-23 | 成都西部石油装备股份有限公司 | A kind of new type auto control system and control method of centrifuge |
| CN111974560A (en) * | 2020-07-30 | 2020-11-24 | 四川宝石机械专用车有限公司 | Automatic control system of centrifugal machine |
| CN115582228A (en) * | 2022-08-24 | 2023-01-10 | 安旭电气(苏州)有限公司 | Operation control system for horizontal screw centrifuge |
-
2019
- 2019-05-22 CN CN201920741468.4U patent/CN210270593U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045676A (en) * | 2019-05-22 | 2019-07-23 | 成都西部石油装备股份有限公司 | A kind of new type auto control system and control method of centrifuge |
| CN111974560A (en) * | 2020-07-30 | 2020-11-24 | 四川宝石机械专用车有限公司 | Automatic control system of centrifugal machine |
| CN115582228A (en) * | 2022-08-24 | 2023-01-10 | 安旭电气(苏州)有限公司 | Operation control system for horizontal screw centrifuge |
| CN115582228B (en) * | 2022-08-24 | 2024-05-03 | 安旭电气(苏州)有限公司 | Operation control system for horizontal decanter centrifuge |
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