DYHGDY-10 Chemical Instrument Maintenance Works Experimental Platform

Release time：2024-06-06 07:00viewed：times

1. Characteristics of the tr*ning device.
The parameters to be adjusted include the four parameters commonly used in industry: liquid level, temperature, flow, and pressure.
The actuators include both regulating valve instrument actuators , as well as electric drives such as frequency converters and pressure regulating modules. Dynamic actuator;
In addition to changing the setting value of the regulator to make step disturbances, the system can also create various disturbances in the object through hand-operated valves;
an adjusted parameter can be used with different power sources, different actuators, and different The process line can be evolved into a variety of adjustment loops to facilitate discussion and comparison of the advantages and disadvantages of various adjustment schemes; experiments on
multi-variable control systems and specific process control
systems can be carried out; various control algorithms and adjustment rules can be used on an open experimental software platform can be controlled;
experimental data and charts can be easily stored and recalled in the MCGS software system to facilitate the experimenter's post-experiment analysis and comparison;
in terms of signal processing, a complete set of signal interfaces is also reserved, which can be used in the future System expansion, such as fieldbus, DCS and other control systems;
you can use the powerful software system of MCGS to establish a small local area network control.
In the overall tr*ning device, there are temperature troubleshooting functions, regulating valve troubleshooting functions, card troubleshooting functions, etc.
2. Composition of the objects of the tr*ning device
The tr*ning device includes a set of organic glass three-capacity water tanks, each water tank cont*ns There is a liquid level sensor ; it also has a two-way water supply system. One is composed of a circulating water pump, regulating valve, orifice flowmeter + EJA's differential pressure transmitter, and the other is composed of a frequency converter, circulating water pump, and turbine flowmeter. Through the valve Switched, any set of water supplies can reach any tank. In addition, in order to achieve temperature control, the experimental device is specially designed with a normal pressure electric heating boiler and a forced convection heat exchanger. The normal pressure electric heating boiler is divided into two layers: an inner tank and a jacket. The inner tank is provided with a heat source by an electric heater and a water source by a first-line water supply system. The boiler inner tank is equipped with an anti-dry burning device to ensure the safety of the equipment; the jacket is provided by a first-line water supply system. Provide cooling water. The inner tank water temperature and jacket water temperature are affected by changing the heating power of the electric heater or the flow rate of cooling water/water to be heated. The boiler liner and jacket are equipped with thermal resistance temperature measuring elements. There is also a local temperature display instrument inside the liner.
The liquid level and pressure
tr*ning device provides a three-capacity water tank level system. This product provides a transparent organic glass three-capacity water tank liquid level object research system. Each water tank is equipped with a conventional liquid level transmitter; through valve switching, any two groups Powered water flow can reach any tank. Therefore, the system can complete liquid level, flow and combination experiments in a variety of ways: single volume, double volume (first-order, second-order) liquid level object characteristics test experiment
single-loop liquid level control experiment: liquid level control under different interference methods Experiments; cascade control experiments of different water tank levels; feedforward-feedback control experiments; coupling control experiments.
The temperature
tr*ning device provides a heating boiler-pure lag temperature experiment system. The system provides a heating boiler-pure lag temperature experiment. The heating boiler and pure lag system are equipped with Pt100 thermal resistors at different time constant positions to detect the temperature, and the temperature is detected by a thyristor. The electric heating tube is controlled to provide an adjustable heat source, and the system can complete a variety of temperature experiments: temperature object characteristic test experiments (including pure hysteresis characteristics); temperature position control experiments in different water flow states; single-loop PID control experiments with different water flow state temperatures; different times Constant pure hysteresis temperature control experiment.
The flow
tr*ning device provides a dual-pipeline flow system: two independent waterway power systems, one consisting of a water pump, an electric regulating valve, and an electromagnetic flowmeter (m*n pipeline). The electric regulating valve regulates the flow, and the electromagnetic flowmeter detects the flow; The other is composed of a frequency converter, a water pump, and a turbine flow meter (auxiliary pipeline). The frequency converter regulates the flow, and the turbine flow meter detects the flow. Flow control experiments can be completed in various ways: single-loop flow control experiments; flow ratio control experiments.
Mechanical tr*ning safety education virtual simulation software: This software is developed based on unity3d. The software adopts the form of three-dimensional roaming. Movement can be controlled by the keyboard and the lens direction can be controlled by the mouse. It is equipped with mechanical safety distance experiments, mechanical safety protection device experiments, and mechanical safety protection design. For the basic assessment, when the experiment is in progress, the three-dimensional roaming screen uses arrows and footprints to prompt the user to move to the experimental location. The circle around the mechanical object shows the working radius. The experimental process is accompanied by a dialog box reminder of the three-dimensional robot.
A. The content of the mechanical safety distance experiment includes the safety distance experiment to prevent upper and lower limbs from touching the danger zone (divided into two fence heights and opening sizes). After selecting to enter, GB23821-2009 "Mechanical Safety to Prevent Upper and Lower Limbs from Touching the Danger Zone" pops up in front of the camera. "Safe Distance" requirements, error demonstration: The experimental process is that after the human body enters the working radius of the mechanical object and is injured, the red screen and voice prompts that the human body has received mechanical damage, and returns to the original position and conducts the next experiment. The last step is the correct approach.
B. Mechanical safety protection device experiments are divided into safety interlock switches, safety light curt*ns, safety mats, safety laser scanners and other protection device experiments. Optional categories (safety input, safety control, safety output, others), manufacturers, products List (safety interlock switch, safety light curt*n, safety mat, safety laser scanner, safety controller, safety relay, safety guardr*l). There is a blue flashing frame reminder at the installation location. Experimental process: select the safety guardr*l and install it, select the safety interlock switch (or select the safety light curt*n, safety mat, safety laser scanner) and install it, select the safety controller and install it in the electrical control box , select the safety relay and install it in the electrical control box, click the start button on the electrical control box. If you enter a dangerous area, the system will sound an alarm and the mechanical object will stop working. Select the reset button on the electrical control box to stop.
C. The basic assessment of mechanical safety protection design requires the completion of the installation of the mechanical safety system, and the correct installation of safety guardr*ls, safety interlock switches, safety light curt*ns, safety mats, safety laser scanners, safety controllers, safety relays, 24V power supplies, signal lights and Emergency stop button. The assessment is divided into ten assessment points. Some assessment points have 3 options, which are freely chosen by the students. After selecting the final 10 assessment points, submit for confirmation, and the system will automatically obt*n the total score and the score of each assessment point. .
D. The software must be on the same platform as a whole and must not be displayed as separate resources.
At the same time, the VR installation package of this software is provided to customers to facilitate users to expand into VR experiments. VR equipment and software installation and debugging are not required.
3. Heat exchange objects
The tr*ning device provides a special forced convection heat exchanger and boiler heating system to form a complex simulation object of universal significance suitable for research work (the cold water flow rate, hot water flow rate and boiler water temperature of the forced convection heat exchanger are used as system input adjustment variables , the cold water outlet temperature and hot water outlet temperature of the forced convection heat exchanger are used as the system output controlled variables). This system can not only conduct general decoupling experiments, but also guide engineering decoupling comprehensive experiments and control algorithms of multi-variable and multi-coupled systems. Research.
4. Safety system of the tr*ning device.
The chemical instrument m*ntenance workers' competitive tr*ning is a single-phase three-wire power supply. After being installed by the leakage protector, it enters the system for power supply. The power supply voltage is 220V. The design of the auxiliary system is based on extensive surveys and Zhongkong Education Instrument's rich experience in the production of teaching instruments, truly making teaching convenient and learning effective, and fully considering the safety protection of equipment operation. Specific measures include:
classifying I/O signals by type and converting between standard signals;
each strong-current electrical equipment has an independent control switch for control, and full consideration is given to equipment grounding;
boiler heating, etc. are easily Operations that cause equipment damage are restricted and protected;
all electrical accessories are made of high-quality, industry-recognized products.
5. Practical tr*ning device experiment series
Basic experiments
(1) Control system composition understanding experiment
This group of experiments *ms to make students familiar with the tr*ning objects and be able to skillfully wire themselves to form different control loops; to be able to understand the structure and structure of various devices on the objects Have a cert*n understanding of the principles and be able to operate them proficiently; be able to use experimental software proficiently; have a cert*n understanding of the experimental software development platform to lay the foundation for subsequent experiments and improve the efficiency of subsequent experiments.
Understanding the structure of the object hardware device and operation of the instrument, calibration of the sensor (zero point migration and range adjustment) Experiments
Familiarity experiments with the experimental software and its development platform
Selection of control loops and loop connection line experiments (2) Determination of
the mathematical model
of the object This group of experiments is combined Analysis of the mathematical models of single and double water tanks in textbooks related to control theory and measurement methods of mathematical models of objects in textbooks related to process control, using experimental methods to confirm relevant theories and knowledge; cultivating students' learning style of integrating theory with practice; guiding students to learn from different Think about the problem from perspective.
Determination experiment of the mathematical model of liquid level in a single-capacity water tank
Determination experiment of the mathematical model of the liquid level of a double-capacity water tank
(3) Positional temperature control experiment
This experiment combines the relevant knowledge of electrical principles and process control to control different accuracy requirements in the temperature control system. , guide students to design control systems based on practical applications and comprehensively consider control requirements and economic interests; cultivate students' comprehensive quality.
Boiler liner water temperature position control experiment
(4) Single-loop, multi-variable adjustment
Simple single-loop control system accounts for more than 80% of industrial control systems. This series of experiments provides three sets of experiments with different detection parameters, and also provides the same detection parameters. The comparative object experiment allows students to quickly become familiar with simple single-loop control systems, which is helpful for students to comprehensively compare and understand the characteristics of various detection parameters; they are also familiar with using "critical proportionality method" and "attenuation curve method" to engineering PID control Parameters; guide students to start from theory and learn and apply.
Upper water tank liquid level fixed value (follow-up) control experiment
Boiler liner water temperature fixed value control experiment (dynamic flowing water)
Turbine flowmeter flow fixed value control experiment
Improvement experiment
(1) Cascade control experiment
The cascade control system is all complex control The most commonly used control system in the system, this series of experiments shows students the cascade control system from the system control ideas, system structure composition, system working methods, system control performance, etc., allowing students to deepen their understanding and deeply appreciate the knowledge they have learned. At the same time, students will learn to use the "two-step" and "one-step" tuning methods to tune the cascade control system.
Cascade control experiment of boiler jacket water temperature and boiler liner water temperature Cascade
control experiment of upper and lower water tank liquid levels
(2) Ratio control system experiment
This group of experiments shows students the principle and structural composition of a double closed-loop ratio control system, and guides students to " Compare "follow-up system" and "cascade system" to cultivate students' ability to comprehensively think and analyze problems. Expand students’ thinking.
Turbine flow meter flow and electromagnetic flow meter ratio control experiment
Variable ratio control experiment
Troubleshooting experiment
1. Power supply f*lure of the m*n line pump or auxiliary line pump; 2. Inner tank heating power supply f*lure 3. Electric control valve power supply f*lure; 4. PT100 Wiring f*lure; 5. Other PT100 f*lures; 6. Control valve signal line f*lure; 7. Water tank pressure sensor signal line f*lure; 8. Turbine flowmeter signal output f*lure; 9. Thermal resistance temperature transmitter f*lure; 10. M*n pipeline Abnormal flow f*lure; 1/1. I/V signal conversion f*lure of the two-wire transmitter; 12. Thermocouple wiring f*lure;

6. Equipment list of competitive trning device for chemical instrument mntenance workers

serial number	Name	Specification	quantity	Remark
one	Chemical instrument mntenance worker competitive trning device object configuration list		1 set
1	device frame	Overall frame of stnless steel equipment (composed of 304 stnless steel square tube and st*nless steel bottom plate) specifications: 1450mm long × 800mm wide × 1800mm high, error ≤ 10mm; wall thickness ≥ 2.5mm	1
2	Electric heating normal pressure boiler	It is composed of 304 stnless steel liner heating cylinder and closed external circulation stnless steel cooling jacket, size Φ300×600mm, error ≤10mm, wall thickness ≥1mm	1
3	water tank	Two interoperable and circulating water storage tanks with temperature isolation function (304 st*nless steel) Dimensions: length × width × height (mm) 400 × 400 × 400, error ≤ 10mm wall thickness ≥ 1.5mm	1
4	water tank	Three-volume cylindrical small water tank on plexiglass φ250mm×380mm, error ≤10mm, wall thickness ≥5mm	1
5	water tank	Three-capacity cylindrical organic glass small and medium-sized water tank φ250mm×350mm, error ≤10mm, wall thickness ≥5mm	1
6	water tank	Three-capacity cylindrical small water tank under organic glass φ250mm×350mm, error ≤10mm.	1
7	Forced convection heat exchanger	It consists of a φ150mm×800mm st*nless steel jacket with an insulation layer (including 5 φ50mm×600mm copper-aluminum composite integrated radiators).	1
8	water pump	St*nless steel; Power: ≥92W; Full lift: ≥6.8m Maximum displacement: ≥3.5 tons/hour; Power supply: 220VAC; Maximum flow: ≥10L/min, RS15-6	2 units
9	Temperature Sensor	Pt100 accuracy: Class B; graduation number: PT100; st*nless steel protective sleeve, WZP-140	3 sets
10	Sintered integrated small Pt100 thermal resistance temperature sensor	Accuracy: Class B; Index number: PT100; Installation thread: M20×1.5 external thread, WZP-140	3 sets
11	Bimetallic thermometer	Bimetal thermometer range: 0-100°C; accuracy: 1.5, WSS-411	1 set
12	Temperature Transmitter	Pt100 thermal resistance standard signal conversion, power supply: 24VDC; range: 0~100℃; output signal: 4~20mADC; temperature effect: less than 0.05%/℃. SBZ	6
13	Pressure level sensing transmitter	Measuring range: 0-5Kpa Signal: 4-20mA; Power supply: 24VDC; Sum of accuracy linearity, hysteresis, and repeatability <±0.3% FS; Adjustment zero point and full-scale accuracy <±0.3% FS; Temperature range: -40 ~125℃; dynamic response: suitable for static and dynamic measurements, response time <2ms, pressure connection: G1/2. PT300-5KG213	3
14	Orifice flow meter	Orifice flow meter DN10	1
15	Differential pressure transmitter	EJA, output signal: 4-20mA, with manual operator adjustment and verification function, accuracy 0.075%; working power supply: 24VDC; horizontal installation with three-valve group and bracket	1
16	Turbine flow meter (with transmission instrument)	LWGY-10, measuring range: 0-1.2m3/h; output signal: pulse; working power supply: 24VDC, with transmitter instrument.	1 set
17	Intelligent electric single seat regulating valve	Power supply voltage: 220VAC; control signal: 4~20mADC; mode of action: electrical on, 4mA off, 20mA on; nominal diameter: DN20. XPSLP	1
18	Low power frequency converter	Working voltage: 220VAC; control signal: 4-20mA; power: 0.4Kw, with communication interface, FR-D720, 0.4K	1
19	Anti-dry device	Power supply 24VDC; dry burning contact alarm output; equipped with anti-dry burning probe, dry burning automatic alarm and cut off the heating control loop.	1 set
20	Practical tr*ning tools	Victory Precision Digital Multimeter: Accuracy is 3 and a half digits.	1 stick
20	Practical tr*ning tools	24-piece set of commonly used tools for instruments; 35W soldering iron tip (with mounting rack), copper power cord, anti-burning silicone wire length ≥ 200mm, solder wire, fuse, experimental connection wire, component box; wrench, screwdriver, tip Nose pliers, flat-nose pliers, precision digital multimeter: accuracy is 3 and a half digits. Able to meet the requirements of practical tr*ning projects in functions	1 set
two	Chemical instrument mntenance worker competitive trning device console configuration list		3 sets
1	Experimental control console	Specifications: 1200mm long × 700mm wide × 1600mm high; carbon steel spray-coated; color: milky white. Error ≤10mm; wall thickness ≥2mm	1 set
2	Strong power control panel	Specifications: 4U standard panel; installed with *r switches, signal lights, transfer switches and other electrical components; rated working voltage: 220VAC; rated working current: 16A.	1 piece
3	I/O signal interface panel	Specifications: 4U standard panel; 28~36 signal plug-in channels; interconnection of control object signals and control instruments.	1 piece
4	AI intelligent adjustment instrument	Supports multiple inputs such as thermal resistor, analog voltage signal; m*n input: thermocouple, thermal resistor, voltage and current input; linear current output module (4~20mA); with PID control function; relay contact switch output module; communication Function: RS485 communication interface module; power supply: 220V; panel size: 96×96mm. Error ±5mm, AH80.	2 pieces	AH80
		Supporting modules: )	2 sets
		Safety measures and accessories for secondary instrument wiring	2 sets
5	paperless recorder	8 analog signal inputs: support voltage, current, thermal resistance, thermocouple signals; 4 analog signal outputs	1 set
6	RS232/485 converter	Interface characteristics: The interface is compatible with EIA/TIA's RS232.RS485 standard; Electrical interface: DB9 female connector at RS232 end, DB9 pin connector at RS485 end, equipped with binding posts, supports 32 nodes, anti-static protection; working mode: asynchronous semi- Duplex differential transmission; transmission medium: twisted p*r or shielded wire; transmission rate: 300-115.2KB/S; usage environment: -25°C to 70°C, relative temperature 5% to 95%; transmission distance: 1200 meters ( RS485 end) 15 meters (RS232 end). ATC-106	1 set
7	24V switching power supply	NET-150-24, DC 24V output; Capacity: 5A; Modulation method: pulse width modulation (PWM) transistor; Input voltage: 85-264 (V); Working efficiency: 85 (%); Voltage regulation rate: 10 ( %); load regulation rate: 5 (%).	1
8	Connectors, sockets and connecting wires	Rated current: 16A; Rated voltage: 220V; Ambient temperature: within 150 (℃); Conductor material: copper; Self-locking.	2 sets
9	Anti-dry burning alarm module	Anti-dry burning alarm module	1 set
10	Single phase voltage regulating module	Input 220VAC; output 0-220VAC; control signal: 4-20mA; current capacity: 40A, LSA-TH3P35Y	1
11	Troubleshooting area	Fault diagnosis function; unified object signal interface terminal, multiple instrument faults can be set	1 set
12	MCGS configuration software	C/S (client/server) structure; the network ActiveX control provided by MCGS online version can be called directly in various other applications; educational version	1 set
13	Instrument system configuration software	Corresponds to the tr*ning equipment and instruments	1 set
14	Tr*ning device manual	Paper version, electronic version	1 set
15	Practical tr*ning operation guide	Paper version, electronic version	1 set
16	Electrical accessories for tr*ning equipment	Paper version, electronic version	1 set

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6. Equipment list of competitive tr*ning device for chemical instrument m*ntenance workers

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6. Equipment list of competitive trning device for chemical instrument mntenance workers