Dygck-68A liquid level temperature control comprehensive training device

Release time：2024-06-07 14:30viewed：times

1. Overview The
Process Control System (PCS) simulates common physical quantities in modern industrial production processes, such as temperature, pressure, flow, liquid level and other parameters, to measure, control and analyze process parameters. Teaching experimental equipment for changing characteristics and studying process control laws. The process control comprehensive experimental device uses intelligent industrial instruments and meters, which are close to industrial reality, safe to use, stable in operation, simple to m*nt*n, and superior in cost performance. This device integrates multiple control methods, reproduces the control methods used in actual industrial sites, adopts an audible and visual alarm system, and provides a more user-friendly secondary development interface.
2. Product structure and features:
(1) Split design, modular assembly structure, easy to form different control systems.
(2) Two water tanks; one water supply system.
(3) The experimental cabinet is completely open and all internal devices are visible, which is conducive to intuitive teaching and m*ntenance.
(4) Humanized design, equipped with water storage tank and automatic water inlet and dr*nage control device to reduce the labor intensity of experimental personnel. Equipped with a hanging rack for special experimental threads, it is convenient, neat and beautiful to take out and hang up the threads. Provide conditions for experimental civilized operations.
(5) The instruments and components of the installation are all modern industrial-grade products with a high degree of intelligence. Good precision and various specifications. It is beneficial to intuitive teaching and broadening students' industrial field knowledge. Lay a solid foundation for entering society in the future.
(6) High safety. The system is equipped with leakage protection, special experimental power supply connection with protective cover, and temperature control box to prevent automatic control of waterless heating, etc., striving to protect personal and equipment safety.
(7) It has good openness. Under the guidance of teachers, students can observe, participate in operations by themselves, program by themselves for verification, and conduct theoretical analysis based on recorded real-time curves.
(8) Boiler heating program-controlled protection system
A. The boiler heating liner is equipped with a water level protection device. If the water level does not reach a cert*n height, the control system cannot control the operation of the thyristor voltage regulator.
B. The power control switch of the electric heating tube adopts a key switch. When not experimenting, the teacher will protect and place the key to avoid misoperation by unrelated personnel.
(9) Power supply protection measures
A. Add a current leakage protector.
B. The three-phase power supply is equipped with a fuse to prevent circuit breakage.
(10) Power supply start and stop control method:
use start and stop button to control the contactor to control the start and stop of the power supply.
(11) Leakage protection devices and safety and security commitments;
A. Reliable protection functions of various power supplies and various instruments
B. The strong current of various power supplies and various instruments are controlled by switches. Students do not wire their own wiring and do not There is a problem of mixed insertion of strong and weak electricity.
C. The experimental high-power wiring plug adopts a closed structure to prevent electric shock accidents.

3. Technical parameters and requirements:
1. Power supply: AC220V±5% 50 Hz.
2. Environmental humidity: ≤90% (40℃).
3. Control cabinet size: length × width × height = 800 mm × 600 mm × 1700 mm.
4. Rated power: ≤3.5KW
5. Safety protection measures: It has grounding and short-circuit protection functions, and its safety complies with relevant national standards.
4. System configuration

Execution agency
name		unit	quantity		The m*n parameters		Remark
water pump magnetic pump		tower	1		2800r/min, 250W, AC22～380, △/Y, 1.16/0.67A
Siemens frequency converter		Only	1		Input power supply: 220VAC, 50Hz; Output: three-phase 220VAC0.4Kw; Output frequency range: 0-250Hz, actual application setting is 50/60Hz; Signal input: 4-20mADC. Siemens frequency converter MM420 (AC380V), 3 toggle switches, 1 potentiometer, 29 safety sockets		MM420
heating boiler		set	1		One solid-state relay (Omron G3NB-240B, 110~220V, 40A); one heating rod (1000W, AC220), relay safety shield 80mm×110mm×55mm		Self-designed, reliable and safe performance
plc programmable design and control virtual simulation software		set	1		This software is developed based on unity3d and has built-in experimental steps, experimental instructions, circuit diagrams, component lists, connection lines, power on, circuit diagrams, scene reset, return and other buttons. After the connections and codes are correct, you can start/stop, The forward movement and reverse movement buttons operate the 3D machine tool model to move. In the connected line state, the 3D machine tool model can be enlarged/reduced and translated. 1. Relay control: Read the experiment instructions and enter the experiment. By reading the circuit diagram, select the relays, thermal relays, switches and other components in the component list and drag and drop them into the electrical cabinet. The limiters are placed in the three-dimensional On the machine tool model, you can choose to cover it, and some component names can be renamed. Then click the Connect Line button to connect terminals to terminals. After successfully connecting the machine tool circuit, choose to turn on the power and proceed. If the component or line An error box will pop up if there is a connection error, and the scene can be reset at any time. 2. PLC control: The experiment is the same as relay control, with the addition of PLC control function. After the connection is completed, enter the program writing interface through the PLC coding button, and write two programs, forward and reverse, with a total of 12 ladder diagram symbols. The writing is completed. Finally, select Submit for program verification. After the verification is successful, turn on the power for operation. Error boxes will pop up for component, line connection, and code errors, and the scene can be reset at any time. 3. Single-chip microcomputer control: The experiment is the same as relay control, with the addition of single-chip microcomputer control function. After the connection is completed, enter the programming interface through the C coding button, enter the correct C language code, and after successful submission and verification, turn on the power for operation, components, lines If there are connection or code errors, an error box will pop up, and the scene can be reset at any time.		Provide copyright certificate and on-site demonstration
sensor transmitter
Diffused silicon pressure (level) transmitter	Only			2		Imported diffused silicon isolation probe. 0.5 level accuracy; output signal: choose 4-20mADC (two-wire system); connector and shell material: st*nless steel (1Cri18Ni9Ti).
Pt100 temperature sensor and temperature transmitter	set			1		Pt100: Class A; Temperature transmitter: 0.5 level accuracy, 0-100°C.		Pt100
Turbine flow meter and flow transmitter	set			1		(1) Range: select 0-800L/h; (2) Output signal: 4-20mADC; (3) Accuracy: 0.2 level.		LWGYA-10
control unit
S7-200	set			1		Siemens PLC CPU224XP transistor output, 1 EM231 thermal resistance module, 14 toggle switches, 35 safety sockets
temperature controller	Only			1		E5CZ-R2), temperature control 140mm×140mm×320mm
Software system
PLC control software	set			set		PLC supporting education version
Network control software	set			1		Educational Edition
Other equipment
Light blue transparent plexiglass water tank for experiment	Only			2		Two round plexiglass water tanks, thickness 8mm, 200200300
St*nless steel temperature control experimental box	Only			1		It consists of a heating box, a cooling box, an overflow box, a heating ring, Pt100, and a temperature transmitter. There is a water-free power-off protection device in the heating box to prevent the temperature from drying out.
St*nless steel water tank	Only			1		It has a unique structural design and st*nless steel filter, which is easy to remove and clean.
Automatic water supply and dr*nage device for water storage tank	set			1		Automatic water supply and dr*nage reduces the work of experimental teachers
Pipeline, disturbance system	set			1		Manual valve, union, tee, elbow, internal thread joint, external thread joint
All st*nless steel pipes and accessories increase the service life of the equipment.	set			1		The processing
Terminal wiring module	tower			1		48 bit
Experimental rack	set			1		1200mm (length) × 800mm (width) × 1700mm (height)

5. Experiment catalog:
1. PLC and frequency converter unit tr*ning
2. Water level PID control tr*ning
3. Temperature control tr*ning
4. Understanding the structure of the process control object hardware device and instrument operation, sensor calibration (zero point migration and range adjustment) Practical tr*ning
5. Familiarity with practical tr*ning software and its development platform Practical tr*ning
6. Practical tr*ning on the selection of control loops and loop connection lines
7. Practical tr*ning on measuring the relationship between the operating characteristics and flow rate of variable frequency water pumps
8. Determination of the mathematical model of the liquid level of a single-capacity water tank Practical tr*ning
9. Practical tr*ning on water tank level setting (follow-up) control
10. Practical tr*ning on industrial control configuration software configuration control
11. Real-time database configuration, M graphic animation, reports, curves, alarm configuration, equipment communication group Practical tr*ning on configuration and script application configuration.

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