DYHGDY-02 Comprehensive Experimental Platform

Release time：2024-06-06 02:30viewed：times

1. The composition and characteristics of the heat transfer process comprehensive tr*ning device system
. M*n body of the equipment: object part: length × width × height: 3700 × 2000 × 3500mm. The whole machine adopts a steel installation frame (two-layer design, one plane is easy to operate, For m*ntenance and access, there is a safety ramp leading up to the second floor with guardr*ls and anti-slip tread plates)
1. The system heat exchange system includes: water vapor-*r (double-row tube heat exchanger); cold *r-hot *r (casing, Tube and plate type); water-hot *r system (￠159 single tube heat exchanger).
2. Use the ￠159 tube heat exchanger as the m*n body for heat transfer tr*ning. The structure of double parallel tube heat exchangers can be used to operate one set for normal operation and the other for fault operation. Comparing with each other, the double parallel row tube heat exchanger The heater can also perform series/parallel operation of heat exchangers. It is required that the steam pressure and flow regulation system in the shell side of the system tube heat exchanger be controllable. At the same time, the system can automatically set fault points to tr*n students in troubleshooting abilities (*r blockage, water blockage).
3. Make the tube heat exchanger dissectable and not installed on the system, so that the teacher can expl*n the structure of the heat exchanger to the students, so that the students can strengthen their understanding of the heat exchanger structure.
4. The temperature is measured using high-precision imported patch-type micro Pt100+ intelligent inspection recorder. Each temperature zone has local digital display and transmission, the flow detection zone has local digital display and transmission, and the computer carries out the basic principles and processes of data acquisition and process control . The steam source adopts industrial standard fully automatic steam generator. The heat transfer pipeline is connected by pipe flange, which not only has good sealing performance, but also is easy to disassemble and assemble. Local display detection and control instrument: Xiamen Yudian intelligent instrument (with local control RS485 communication interface) is selected.
5. On-site smart instrument electrical console: The leakage protection *r switch and current leakage protector are installed in the steel spray mold to fully consider personal safety protection; at the same time, each group of strong current output has a knob switch control; equipped with phase separation indicators Lamps, switching power supplies, contactors, solid state relays, self-locking switches, plastic copper wires, rubber sheathed wires, shielded wires, aluminum alloy trunking, etc.
6. Local control computer: Lenovo dual-core 2.0G, memory 1GDDR2, hard disk 250G, optical drive, mouse, keyboard, 3-year warranty, monitor: 17" LCD, nationwide joint warranty; operating system: genuine WINDOWS XP. Can be controlled by the on-site industrial control console Independent measurement and control is carried out on-site through intelligent instruments with RS485 communication bus + industrial control configuration software to complete various practical tr*ning projects.
2. System detection and control points
1. Cold and hot fluid fan flow detection and control: orifice flow meter. + Diffused silicon differential pressure transmitter + intelligent flow totalizer, intelligent regulator + frequency converter.
2. φ159 double parallel row tube heat exchanger shell side steam pressure and flow detection and control: ceramic pressure transmitter + intelligent regulator. + Electric regulating valve. Cold fluid inlet temperature: PT100 thermal resistor + intelligent 6-way inspection recorder. Outlet temperature: PT100 thermal resistor + intelligent 6-way inspection recorder.
3. ￠159 single row tube, casing, plate type-- Cold *r-hot *r system heat exchanger cold and hot fluid inlet and outlet temperatures: PT100 thermal resistor + intelligent 6-way inspection recorder
4. Heat exchanger steam drum outlet temperature: PT100 thermal resistor + intelligent 6-way inspection record. Instrument.
3. System functions

project	Experimental teaching of basic theory and professional courses
Experimental teaching	1. Determination of the total heat transfer coefficient K of three types of heat exchanger devices: tube, sleeve and plate.
Practical tr*ning function	Operational tr*ning content
Device function	1. Operation trning on start-up, shutdown and operation of the heat exchanger 2. Operation trning on automatic adjustment of the cold fluid outlet temperature 3. The influence of the relative flow direction of hot and cold fluids on the heat exchange effect (switching between countercurrent and parallel flow) 4. The flow pattern of the fluid (Flow rate) influence on heat exchange effect 5. Operation of series and parallel connection of tube heat exchangers. 6. The influence of non-condensable gas in steam on heat transfer effect. 7. Determination of heat transfer coefficient K.
Prepare to drive	1. Read and describe the process flow diagram 2. Be familiar with the site numbers, functions, working principles and usage methods of on-site devices and m*n equipment, instruments and valves 3. Develop an operation plan as required 4. Check each equipment, pipeline, Whether the valve is in normal driving condition 5. Introduce public utilities (water, electricity, steam) and ensure normal operation 6. Power on the device and check whether the status of each instrument is normal; test run the equipment
drive	1. Follow the correct driving steps and adjust the *r flow and steam pressure to the specified values. 2. Be able to perform heat exchanger switching operations.
normal operation	1. Able to change the r flow and steam pressure to specified values and re-establish normal operation. 2. Inspect various temperatures, pressures, and flows as required and keep records, and be able to judge whether each indicator is normal in a timely manner. 3. Inspect moving equipment (blower) as required. 4. Observe the operating status of the heat exchanger during normal operation, and point out factors that may affect its normal operation. 5. Able to adjust the r outlet temperature according to normal operation. 6. Able to measure the total temperature of the heat exchanger. Heat transfer coefficient
parking	1. Stop the vehicle according to normal parking procedures. 2. Check the status of each equipment, valves and steam package after parking, and make records after confirmation.
Accident handling	1. Be able to observe and analyze system operation abnormalities caused by low steam pressure and restore them to normal operating conditions 2. Be able to observe and analyze system operation abnormalities caused by the presence of non-condensable gas in the heat exchanger and restore them to normal operating conditions 3. Will observe and analyze abnormal phenomena caused by f*lure to remove condensate in the heat exchanger in time and restore it to normal operating conditions
Equipment m*ntenance	1. The starting, stopping, normal operation and dly mntenance of the blower 2. The structure, working principle, normal operation and mntenance of the heat exchanger 3. The location, type and structure of the mn valves (steam pressure adjustment, r flow adjustment, steam trap) , working principle, normal operation and mntenance
control instrument	1. Measurement principles of temperature, flow and pressure sensors ; use of temperature and pressure display instruments and flow control instruments. 2. Control the normal use of the actuator inverter and regulating valve.
software	1. Familiarity, understanding and use of upper monitoring platform software 2. Mechanical trning safety education virtual simulation software: This software is developed based on unity3d. The software adopts the form of three-dimensional roaming, and can control movement through the keyboard and the mouse to control the lens direction. It is equipped with mechanical Safety distance experiment, mechanical safety protection device experiment, and basic assessment of mechanical safety protection design. During the experiment, the three-dimensional roaming screen uses arrows and footprints to prompt moving to the experimental location. The circle around the mechanical object shows the working radius. The experimental process is accompanied by a three-dimensional robot. dialog box reminder. 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 curtns, 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 curtn, safety mat, safety laser scanner, safety controller, safety relay, safety guardrl). There is a blue flashing frame reminder at the installation location. Experimental process: select the safety guardrl and install it, select the safety interlock switch (or select the safety light curtn, 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 guardrls, safety interlock switches, safety light curtns, 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.

4. Heat transfer tr*ning equipment configuration list

category	Material name	Specifications and models		quantity	Remark
1. Mn body of the equipment: object part: length × width × height: 3700 × 2000 × 3500mm. The whole machine adopts a steel installation frame (two-layer design, the first floor is convenient for operation, mntenance, and access, and there is a safety ramp leading up to the second floor. And there are guardr*ls and anti-slip pattern boards)
moving equipment	fan	High-efficiency vortex *r pump, power, 750W, maximum flow 100m2/h		3 units
	Oil-free lubricated compressor	Air compressor: 0-0.8Mpa, exhaust volume 0-0.0 12M3/min		1 set
	centrifugal pump	CHLF2-20/power 0.37KW/flow 2M3/H		1 set
Static equipment (φ159 double parallel row-tube heat exchanger)	φ159 double parallel row tube heat exchanger	φ189×1300mm st*nless steel tube heat exchanger (heat exchange area 1.0m3)		2 units
Static equipment (φ108 single row tube, casing, plate type-cold r-hot r system)	φ108 single tube heat exchanger	φ144×1200mm st*nless steel tube heat exchanger (heat exchange area 0.76m3)		1 set
	St*nless steel sleeve heat exchanger	The inner heat exchange tube is made of stnless steel, and the outer heat exchange tube is made of stnless steel with an aluminum silicate insulation cotton insulation layer (heat exchange area 0.5m3)		1 set
	St*nless steel plate heat exchanger	St*nless steel (heat exchange area 0.5m3)		1 set
	steam distributor	With connecting pipes such as safety valves and intermediate management valves (φ108×1000mm st*nless steel)		1 set
	Fully automatic steam generator	Heating power 6KW, maximum steam pressure 0.4Mpa		1 set
Static equipment (φ159 single tube heat exchanger, water-hot *r system)	φ159 single tube heat exchanger	φ189×1200mm st*nless steel tube heat exchanger (heat exchange area 0.8m3)		1 set
	St*nless steel water tank	450×500×600mm 304 st*nless steel water tank		1 set
2. Detect control parameters
	variable	testing facility	Display control instrument and model	quantity	control mechanism
Detect control parameters	Cold and hot fluid fan flow detection and control	Orifice flow meter + diffused silicon differential pressure transmitter Accuracy: 1.5%FS	Intelligent flow totalizer Yudian AI-708H	2	Frequency converter
	Cold and hot fluid fan flow detection and control		Intelligent regulator Deutsche Electric AH7009	2	Frequency converter
	φ159 double parallel row tube heat exchanger shell side steam pressure	Ceramic pressure transmitter pressure transmitter and national standard pressure pointer gauge	regulating valve	2	Steam pressure reducing valve
	φ159 double parallel row tube heat exchanger cold fluid inlet and outlet temperatures	PT100 thermal resistance (4)	Intelligent 6-channel inspection recorder D76009	4
	φ114 single row tube, casing, plate type - cold r-hot r system heat exchanger cold and hot fluid inlet and outlet temperatures	PT100 thermal resistance (2)	Intelligent 6-channel inspection recorder D76009	2
	Heat exchanger steam drum outlet temperature	PT100 thermal resistance (2)	Intelligent 6-channel inspection recorder D76009	1
control actuator	*Mitsubishi inverter	FR-D540 frequency converter, specifications: (0-50) Hz/0.75KW		2 units
	The electromagnetic valve	St*nless steel, φ15 mm normally open		4 units
	The electromagnetic valve	St*nless steel, φ15 mm normally closed		2 units
	Steam pressure regulating valve	DN20dg15		2 units
	pressure regulating valve	DN15,0-1MPa		2
	Ball valve, globe valve, trap, etc.	St*nless steel		a batch
computer control	Communication network converter	RS485/232 communication converter		1 set
computer control	Operator station upper monitoring computer	Lenovo dual-core 2.0G, memory 1GDDR2, hard drive 250G, optical drive, mouse, keyboard, 3-year warranty, monitor: 17" LCD, nationwide warranty; operating system: genuine WINDOWS XP.			1 set
3. Intelligent instrument electrical console and computer control console
Smart instrument electrical console		On-site intelligent instrument electrical console (including embedded industrial control machine): The leakage protection *r switch and current leakage protector are installed in the steel spray mold to fully consider personal safety protection; at the same time, each group of strong current output has a knob switch control , ensuring equipment safety and convenient operation and control; equipped with phase-separated indicator lights, switching power supplies, contactors, solid-state relays, self-locking switches, plastic copper wires, rubber sheathed wires, shielded wires, aluminum alloy wire troughs, etc.
4. Upper-level monitoring software for smart instruments: 1. MCGS industrial control configuration software; 2. Upper-level monitoring software (using industrial control configuration software as the platform software)

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