CN111330745A

CN111330745A - On-spot unmanned operation system of full-automatic centrifuge

Info

Publication number: CN111330745A
Application number: CN202010253060.XA
Authority: CN
Inventors: 梁大用
Original assignee: Bengbu Langchen Chemical Equipment Co ltd
Current assignee: Bengbu Langchen Chemical Equipment Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-06-26

Abstract

The invention discloses an on-site unmanned operation system of a full-automatic centrifuge, which comprises a control center, a PLC module and the centrifuge, wherein the PLC module is in control connection with the centrifuge, the control center comprises a monitoring module and a DCS module, the monitoring module is in control connection with a monitor, the monitor is connected to the centrifuge, an MODBUS module is arranged between the DCS module and the PLC module, the PLC module is connected with a CP communication module, the CP communication module is connected with the MODBUS module, and the CP communication module is used for the PLC module to communicate with a master station and a slave station of the MODBUS module. The invention has the advantages that: this system monitors centrifuge's the production condition through the watch-dog, and control picture transmission can control center, and control center assigns the instruction to the DCS module according to the production condition, and the DCS module carries out the communication conversion through MODBUS module and PLC module to make the PLC module assign the instruction to centrifuge, thereby can remote control centrifuge.

Description

On-spot unmanned operation system of full-automatic centrifuge

Technical Field

The invention relates to the technical field of production of centrifuges, in particular to a field unmanned operation system of a full-automatic centrifuge.

Background

Centrifuge utilizes centrifugal force, the machinery of each component in the mixture of separation liquid and solid particle or liquid and liquid, centrifuge needs the workman to operate explosion-proof control cabinet now at the during operation, assign the instruction to PLC through explosion-proof control cabinet, PLC control centrifuge carries out work, place one side at centrifuge at explosion-proof control cabinet at the during operation, can operate explosion-proof control cabinet according to the behavior in the centrifuge, but centrifuge is when separating chemical industry raw materials, it can the chemical leakage cause the injury for human health, even mix with other chemical gas and cause the explosion, the staff at the scene can danger very, consequently, need assign the instruction to PLC through control center (DCS) long-range, but incompatible between DCS and the PLC, the instruction can't directly be assigned to PLC to DCS, so that unable remote control centrifuge.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a field unmanned operation system of a full-automatic centrifuge.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a full-automatic centrifuge field unmanned operation system, includes control center, PLC module, centrifuge, PLC module control connection centrifuge, control center includes monitor module and DCS module, monitor module control connection watch-dog, and the watch-dog is connected on the centrifuge set up the MODBUS module between DCS module and the PLC module, MODBUS module is used for the information of transmission MODBUS agreement between DCS module and the PLC module, connects CP communication module on the PLC module, and the MODBUS module is connected to CP communication module, and CP communication module is used for PLC module and MODBUS module master-slave station communication.

Preferably, the PLC module and the DCS module both use the same communication rate.

Preferably, a hardware dog is inserted into the CP communication module.

Preferably, a serial communication port IS arranged on the CP communication module, the serial communication port IS connected with a communication line, the communication line IS connected with the MODBUS module, and the model of the communication line IS.

Preferably, connect the installing support on centrifuge, connect on the installing support the watch-dog, the installing support includes two first driving pieces, connects the carriage on the piston rod of first two driving pieces, sets up the motor on the carriage, connects the rotor plate on the output shaft of motor, sets up two second driving pieces on the rotor plate, articulates the mounting panel on the piston rod of two second driving pieces, connects on the mounting panel the watch-dog.

Preferably, the sliding frame comprises L-shaped plates which are symmetrically arranged, one side of each L-shaped plate is connected to the corresponding piston rod of the second driving piece, a fixed plate is connected to the position above the position between the two L-shaped plates, the side face of the lower portion of the fixed plate is connected with the motor, the output shaft of the motor penetrates through the fixed plate upwards, and the output shaft of the motor is connected with the rotating plate.

Preferably, a sliding plate is connected below each L-shaped plate, a sliding groove is formed in the side surface below each sliding plate, a sliding rail is slidably connected in each sliding groove, and all the sliding rails are connected to the corresponding centrifuges.

The invention has the advantages that: the on-site unmanned operation system of the full-automatic centrifuge can monitor the production condition of the centrifuge through the monitor, the control center is controlled by monitoring picture transmission, the control center gives instructions to the DCS module according to the production condition, and the DCS module is in communication conversion with the PLC module through the MODBUS module, so that the PLC module gives instructions to the centrifuge, and the centrifuge can be remotely controlled.

Drawings

FIG. 1 is a schematic diagram of an on-site unmanned operation system of a fully automatic centrifuge according to the present invention;

FIG. 2 is a schematic view of the structure of a centrifuge;

fig. 3 is a structural view of the carriage.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the field unmanned operation system of the full-automatic centrifuge provided by the invention comprises a control center 1, a PLC module 2 and a centrifuge 3, wherein the PLC module 2 is in control connection with the centrifuge 3, the control center 1 comprises a monitoring module 4 and a DCS module 5, and the monitoring module 4 is in control connection with a monitor 6.

As shown in fig. 2, the monitor is mounted on a mounting bracket, the mounting bracket is connected to the centrifuge 3, the mounting bracket includes two first driving members 4.1, the first driving members 4.1 may be hydraulic cylinders, air cylinders, or electric push rods, in this embodiment, the first driving members 4.1 are hydraulic cylinders, and the two hydraulic cylinders are fixed to the centrifuge 3 by bolts.

The sliding frames 4.2 are welded on the piston rods of the two first driving parts 4.1, as shown in fig. 3, each sliding frame 4.2 comprises L-shaped plates 4.3 which are symmetrically arranged, one side of each L-shaped plate 4.3 is welded on the piston rod of each driving part 4.1, a sliding plate 4.4 is welded below each L-shaped plate 4.3, a sliding groove 4.5 is arranged on the side surface below each sliding plate 4.4, a sliding rail 4.6 is slidably connected in each sliding groove 4.5, all the sliding rails 4.6 are welded on the corresponding centrifuge 3, and the sliding of the L-shaped plates 4.3 is more stable through the guiding sliding of the sliding grooves 4.5 on the sliding rails 4.6.

A fixed plate 4.7 is welded above the two L-shaped plates 4.3, a motor 4.8 is fixed on the lower side surface of the fixed plate 4.7 through bolts, an output shaft of the motor 4.8 upwards penetrates through the fixed plate 4.7, an output shaft of the motor 4.8 is welded with a rotating plate 4.9, two second driving parts 4.10 are connected on the rotating plate 4.9, the second driving parts 4.10 can be hydraulic cylinders, air cylinders or electric push rods, in the embodiment, the second driving parts 4.10 are preferably hydraulic cylinders, the two second driving parts 4.10 are fixed on the rotating plate 4.9 through bolts, the piston rods of the two second driving parts 4.10 are hinged with a mounting plate 4.11, the monitor 4 is arranged on the mounting plate 4.11, the centrifuge 3 is provided with an observation mirror, and the monitor 4 can observe the material condition in the centrifuge 3 through the observation mirror.

A MODBUS module 7 is arranged between the PLC module 2 and the DCS module 5, the MODBUS module 7 is used for transmitting information of a MODBUS protocol between the DCS module 5 and the PLC module 2, the PLC module is Siemens S7-300/400 series PLC in the embodiment, the CP341 or CP441-2 module is a module supporting MODBUS serial communication in Siemens S7-300/400 series, therefore, a CP communication module 8 is connected on the PLC module, the CP communication module 8 is a CP341 module in the embodiment, a serial communication port is arranged on the CP341 module, a communication line is connected on the serial communication port, the communication line is connected with the MODBUS module 7, the type of the communication line can be RS232 or RS485, but the receiving end of RS485 can counteract interference introduced by the signal in the transmission process, and the receiving end of RS232 cannot transmit kilometers of the signal, so that the RS485 has strong anti-interference capability, can make control center 1 keep away from centrifuge 3's job site, ensure staff's safety, consequently choose for use the communication line of RS485 model.

Can establish the master and slave station communication between PLC module 2 and the MODBUS module 7 through CP341 communication module, when will realizing the MODBUS communication in addition, need insert the hardware dog 9 of corresponding agreement on CP341 communication module, the CP module just can support MODBUS, and MODBUS's communication transmission format is the RTU format.

In addition, to ensure that the communication rates of the two systems of the PLC and the DCS are consistent, a common communication rate, which is typically 9600 or 19200, is used, and in this embodiment, the communication rate is 9600.

The working principle of the system is as follows: monitor 6 production condition to centrifuge 3 through watch-dog, control picture transmission returns control center, and control center assigns the instruction to DCS module 5 according to production condition, and DCS module 5 carries out the communication conversion through MODBUS module 7 and PLC module 2 to make PLC module 2 assign the instruction to centrifuge 3, thereby can remote control centrifuge, not only can ensure staff's life safety, can also reduce the cost of labor.

Claims

1. The utility model provides a full-automatic on-spot unmanned operation system of centrifuge, includes control center (1), PLC module (2), centrifuge (3), PLC module (2) control connection centrifuge (3), its characterized in that: control center (1) is including monitoring module (4) and DCS module (5), monitoring module (4) control connection watch-dog (6), and watch-dog (6) are connected centrifuge (3) are last set up MODBUS module (7) between DCS module (5) and PLC module (2), and MODBUS module (7) are used for the information of transmission MODBUS agreement between DCS module (5) and PLC module (2), connect CP communication module (8) on the PLC module, and MODBUS module (7) is connected in CP communication module (8), and CP communication module (8) are used for PLC module (2) and MODBUS module (7) master-slave station communication.

2. The on-site unmanned operation system of the full-automatic centrifuge according to claim 1, characterized in that: the PLC module (2) and the DCS module (5) both adopt the same communication speed.

3. The on-site unmanned operation system of the full-automatic centrifuge according to claim 1, characterized in that: and a hardware dog (9) is inserted into the CP communication module (8).

4. The on-site unmanned operation system of the full-automatic centrifuge according to claim 1, characterized in that: and a serial communication port IS arranged on the CP communication module (8), a communication line IS connected with the serial communication port, the communication line IS connected with the MODBUS module (7), and the model of the communication line IS IS 485.

5. The on-site unmanned operation system of the full-automatic centrifuge according to claim 1, characterized in that: centrifuge (3) is gone up and is connected the installing support, connects on the installing support watch-dog (6), the installing support includes two first driving pieces (4.1), connects carriage (4.2) on the piston rod of first two driving pieces (4.1), sets up motor (4.8) on carriage (4.2), connects rotor plate (4.9) on the output shaft of motor (4.8), sets up two second driving pieces (4.10) on rotor plate (4.9), articulates mounting panel (4.11) on the piston rod of two second driving pieces (4.10), connects on mounting panel (4.11) watch-dog (4).

6. The on-site unmanned operation system of the full-automatic centrifuge according to claim 5, characterized in that: carriage (4.2) are all connected correspondingly including the L template (4.3) that the symmetry set up, one side of every L template (4.3) on the piston rod of second driving piece (4.10), connect fixed plate (4.7) in the top between two L templates (4.3), connect in the below side of fixed plate (4.7) motor (4.8), the output shaft of motor (4.8) upwards passes fixed plate (4.7), the output shaft of motor (4.8) is connected rotor plate (4.9).

7. The on-site unmanned operation system of full-automatic centrifuge according to claim 6, characterized in that: the lower part of each L-shaped plate (4.3) is connected with a sliding plate (4.4), the side surface of the lower part of each sliding plate (4.4) is provided with a sliding groove (4.5), each sliding groove (4.5) is connected with a sliding rail (4.6) in a sliding manner, and all the sliding rails (4.6) are connected to the corresponding centrifuge (3).