DYLR-RB air source heat pump performance experimental device
Release time：2024-07-01 20:30viewed：times
The *r source heat pump heat engine tr*ning and assessment device is a product developed in accordance with the requirements of the Ministry of Education's "Revitalizing the 21st Century Vocational Education Curriculum Reform and Textbook Construction Plan" and the teaching and tr*ning requirements of vocational education. It is suitable for the refrigeration and heating technology and heat pump technology teaching and tr*ning experimental tr*ning device of higher vocational colleges and vocational schools. Heat pump technology is one of the effective measures to recover and utilize low-level heat energy. Research and promotion of heat pump technology is of great significance for energy conservation. With the development of refrigeration technology in recent years, heat pump technology has been increasingly widely used in China.
1. Device features
1. The system unit is equipped with multiple protections such as high and low pressure protection system, overload protection, phase loss protection, defrost function, etc. to ensure the safe, reliable and stable operation of the system without affecting the teaching curriculum.
2. The whole system adopts fully automatic intelligent control, which is easy to operate. The water temperature, water level, opening, closing and time can be freely set by the user. The whole machine adopts the automatic memory function of power f*lure, which does not need to be repeated every time, which is convenient and practical.
3. This experimental device uses a compressor and a heat exchanger forged from high-quality copper parts, which has high heat exchange efficiency and is safe and reliable. The water tank adopts advanced brushed silver technology, combining fashion with top technology. The equipment has beautiful appearance. The inner tank is made of 304 st*nless steel, which is durable and not easy to corrode or damage.
4. The system adopts industrial *r source heat pump hot water unit, which is consistent with the actual industrial equipment, so that teaching can be integrated with practical application. The outdoor host adopts thickened sheet metal p*nt type, which can withstand different experimental environments, work effectively for a long time, and will not rust or corrode.
5. The whole set of tr*ning equipment integrates *r source heat pump heat engine system, electrical control system and fault simulation system. The process system is real and complete, with clear and compact structure, which fully meets the students' requirements for practical tr*ning.
6. The tr*ning device intuitively displays the system structure and working principle of the heat pump water heater. The structure of the heating cycle system and the m*n components can be clearly seen. The system is also equipped with AC voltmeter, AC ammeter, temperature meter, vacuum pressure gauge, so that the real-time working status of the entire heat pump system is clear at a glance.
7. It can simulate actual industrial problems for fault setting. Students analyze the possible causes of the fault according to the process flow, determine the scope of the fault, and conduct troubleshooting tr*ning. 8. Equipment pipeline: The original refrigeration pipeline is reasonably moved to the experimental table
without changing its performance. High and low pressure protectors and working fluid liquid visual mirrors are installed. Different colors are used on the pipelines, high pressure pipes are red, and low pressure pipes are blue. 9. Pressure protection equipment: Prevent students from adding too much or too little refrigerant during teaching, which may cause the equipment to work abnormally. 10. Under different pressures of the evaporator, the compressor can be tested at different cooling capacities, and it has automatic adjustment of compressor overcooling/overheating. 11. The mechanical throttling device is difficult to adjust and damaged during the experiment, so that students can learn the electronic control method, operation adjustment method, and technical parameter adjustment during the experiment . 2. Technical performance of *r source heat pump tr*ning and assessment device 1. Input power: single-phase three-wire ~ 220V ± 10% 50Hz 2. Working environment: temperature -10℃ ~ +40℃, relative humidity <85% (25℃), altitude <4000m 3. Device capacity: less than or equal to 1.5kVA 4. Refrigerant: R22 5. Heating capacity: 3kW 6. Weight: 200kg 7. Dimensions (approximately): 180cm×73cm×164cm 8. Safety protection: It has leakage voltage and leakage current overcurrent protection devices, and its safety meets national standards. III. Basic configuration and functions of the tr*ning device The tr*ning device is m*nly composed of a control panel, a tr*ning table, a heat pump unit, etc. 1. Tr*ning table The tr*ning table is made of high-quality industrial aluminum profiles, with beautiful appearance, corrosion resistance and high structural strength. The desktop is a fireproof, waterproof, wear-resistant high-density board with a solid structure and beautiful shape; the desktop is used to install the power control panel and provide a spacious and comfortable work surface. The experimental table is made of high-quality double-layer matte dense-gr*ned spray-coated sheet metal; the tr*ning table is also equipped with four universal wheels for easy movement and fixation. 2. Control panel It adopts iron double-layer matte dense gr*n spray structure and high-quality acrylic panel. The panel is laser engraved with the process flow chart of the heat pump unit system. The process flow schematic diagram will never wear out, and it is clear and three-dimensional. The panel is equipped with clear markings and corresponding indicator lights to facilitate students' analysis and observation. 3. Power control part AC power supply: Provides single-phase AC power required for the control panel and the heat pump unit, which can be controlled by the m*n power switch. It is equipped with a three-and-a-half-digital AC voltmeter and AC ammeter, which can indicate the input grid voltage value and the system working current value. 4. Measuring instruments (1) Digital voltmeter: 0~250V (2) Digital ammeter: 0~10A (3) Vacuum pressure gauge: -0.1~1.5Mpa 5. Requirements for refrigeration capacity adjustment control device: 1) By automatically adjusting and increasing the refrigerant flow, the exhaust temperature of the compressor can be effectively reduced and the efficient working area of the compressor can be expanded. The bidirectional electronic control system can realize the energy-saving control and automatic flow adjustment of bidirectional heat pump function, cold storage control, *r-conditioning refrigeration unit, frequency conversion unit and central *r-conditioning unit.
2) Software control can control the temperature of the system online, read the flow opening of the unit's refrigeration refrigerant at the optimal temperature system, and adjust the superheat and subcooling of the refrigeration unit. The left side of the text display interface displays the current unit's operating data in real time in the form of text. In the upper part of the right side of the interface, the communication information is displayed, including the communication role and the setting value of the communication port and the current communication status. In the lower part of the right side of the interface, "Data Information", it displays which data frame is currently received, the address of the received data frame, and other information. It has the online and manual adjustment function of the upper computer adjustment:
3) System matching debugging control software requirements:
A) 4-way real-time temperature display: The controller simultaneously detects the temperature of the system's refrigeration multiple points to control the unit's subcooling/superheating.
B) Real-time display of valve opening: The control object is set to a maximum opening of 500P. The minimum opening can be set for the refrigerant flow of the refrigeration system.
C), 24-way parameter control parameter setting: All the temperature parameters, time parameters, control parameters, and other 24 parameters related to control in the controller can be adjusted to adapt to refrigeration/heat pump/cold storage/water machine and other equipment.
D), automatic adjustment: The equipment has a power-off memory function when running, keeping the current value unchanged. Ensure the valve opening under the conditions of refrigeration/heat pump/cold storage/water machine.
E), 6-way user simulation environment data input setting as shown in the figure below: During debugging, through software simulation setting, the valve opening state of the refrigeration host unit under various temperature conditions can be simulated to accumulate a large amount of data, so as to set the standard valve opening value according to the characteristics of each refrigeration unit. Refer to 24-way parameter setting for det*ls
F), Up to 8-way equipment operation monitoring: Online monitoring of the compressor, expansion valve, temperature at each point, protection action circuit and other operating states of the unit.
G), Overcooling/heating control range: 2-15 degrees Celsius. The overcooling and overheating of the refrigeration host can be set by yourself to provide data for design.
H), Refrigerant: Adapt to other refrigerants such as R134AR22R410A.
4) Offline manual setting requirementsA
) Temperature and opening can be displayed for query/setting: All temperatures detected by the controller can be queried and the opening can also be queried and displayed in real timeB
) Adjustment function: During the unit development and commissioning stage, the controller can be manually adjusted to obt*n valid test data.
C) The digital tube display displays the opening, temperature and fault code online.
D) The digital tube display displays the opening, temperature and fault code
online5) Curve display interface requirements6
. Virtual simulation software for electrical installation of building and intelligent building
Based on unity3d design, users can choose different sizes of interactive interfaces according to computer configuration, and can choose six levels of image quality. The model in the software can be rotated 360°, enlarged, reduced and translated. There are assistant prompts during the use of the software, as follows:
A. Wet alarm system1
. System overview: Overview of wet alarm system2
. Equipment recognition: It has the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (built-in 6 multiple-choice questions, with prompts for correct and wrong choices), and schematics (you can enter the equipment from the schematics). Equipment includes: sprinkler, water flow indicator, signal butterfly valve, exhaust valve, fire alarm control, high pressure gauge, high-level water tank, Weiya control cabinet, pressure regulating tank, flow switch, terminal water test device, dr*nage facilities, water pump connector, hydraulic alarm, delay, wet alarm, butterfly valve, check valve, fire pump, safety pressure regulating valve, fire water pool.
3. Principle display: Display the working principle of the wet alarm system, 3D animation demonstration, 3D model is semi-transparent, and the internal water flow can be seen. Equipped with exercise module (4 built-in multiple-choice questions, both correct and wrong choices are prompted)
4. Design layout: There are multiple-choice questions and calculation questions, each question is scored, and the correct answer and score are displayed after submission
B. Gas fire extinguishing system
1. System overview: Overview of gas fire extinguishing system
2. Equipment cognition: It is equipped with the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (8 built-in multiple-choice questions, both correct and wrong choices are prompted), and schematic diagram (you can enter the equipment from the schematic diagram). The equipment includes: nozzles, HFC-227 storage bottles, bottle head valves, HFC-227 one-way valves, high-pressure hoses, gas one-way valves, safety valves, weighing alarms, electromagnetic starters, selector valves, smoke alarms, and fire alarm controllers.
3. Principle demonstration: Demonstrate the working principle of the gas fire extinguishing system, with a three-dimensional animation demonstration and a semi-transparent three-dimensional model so that the internal gas can be seen. Equipped with a practice module (with 3 built-in multiple-choice questions, with prompts for correct and incorrect choices)
4. Design layout: There are 6 multiple-choice questions, each with a score, and the correct answer and score will be displayed after submission.
C. Escape drills: Teaching is conducted in the form of fun games. Escape from the burning room within a limited time. Wrong choices will directly enter the score interface. IV
. Practical tr*ning projects
1. Knowledge and understanding of the heat pump unit system
2. Practical tr*ning on the start-up, operation, commissioning, and protection technology of the heat pump unit system
3. Detection and analysis of the operating conditions and operating parameters of the heat pump unit
4. Calculation and analysis of the heating capacity and performance coefficient of the heat pump unit
5. Setting and detection of heat pump unit system faults
Wechat scan code follow us
