Chemical instrument and control comprehensive practical training device

Abstract

The invention relates to the technical field of controller auxiliary equipment, in particular to a chemical instrument and control comprehensive practical training device which comprises a circulating water tank, a lower water tank, an upper water tank and an integrated control cabinet, a centrifugal pump is fixedly mounted on the left side of the circulating water tank, and a circulating pump is fixedly mounted on the right side of the circulating water tank; a ninth gate valve is installed between the circulating water tank and the centrifugal pump, and an inlet adjusting valve is fixedly installed between the circulating water tank and the circulating pump. According to the invention, measurement and control of four most common parameters in the chemical process are included, more than ten different types of sensors, transmitters and execution mechanisms are integrated, more than fifteen typical experiments from basic cognition to advanced control can be carried out, and the teaching function is complete. According to the device, industrial instruments and equipment are adopted, control strategies cover industrial mainstream control schemes such as PID (Proportion Integration Differentiation), bit mode, cascade, ratio and the like, and instrument faults and emergency working conditions can be simulated.

Description

Technical Field

[0001] This invention relates to the field of controller auxiliary equipment technology, specifically a chemical instrumentation and control integrated training device. Background Technology

[0002] Chemical Instrumentation and Process Control is a core course for majors such as Chemical Engineering, Automation, Measurement and Control Technology and Instruments. Its teaching aims to enable students to master the skills of measuring, transmitting, displaying and controlling key parameters such as temperature, pressure, flow rate and liquid level in industrial processes. Practical training is a key link between theory and practice and is of great significance for cultivating students' engineering practice ability and innovative thinking.

[0003] Currently, the chemical instrumentation and control training devices commonly used by universities and related vocational training institutions all have certain limitations. Therefore, there is an urgent need in this field for a comprehensive chemical instrumentation and control training device that is highly integrated, fully functional, flexibly configurable, can realistically simulate industrial processes, and supports multi-level and innovative experimental teaching.

[0004] The existing technology still has the following drawbacks in its use: Existing chemical instrumentation and control integrated training devices have highly specialized functions, usually only conducting simple measurement and verification experiments on a specific variable. Although such devices are simple in structure and low in cost, they cannot reflect the complex characteristics of multiple variables and strong coupling in industrial processes, making it difficult to meet students' cognitive needs for the overall control of chemical processes. They have a narrow teaching coverage and poor comprehensiveness. Existing chemical instrumentation and control integrated training devices focus on the internal structure recognition, calibration and maintenance of instruments. The core of these devices is to train students as independent individuals. Although this can deepen students' understanding of the principles of individual instruments, it lacks training in placing instruments in a complete control loop for system integration, signal docking and strategy design. Students cannot experience the complete engineering practice process from sensor selection, signal line laying, controller configuration to actuator debugging, which is out of touch with the requirements of modern industrial automation system integration. Existing chemical instrumentation and control integrated training devices serve as a supplement to hardware devices. While pure software simulation has advantages such as low cost, no risk, and diverse scenarios, it cannot replace the realism of hardware operation. Students cannot access real physical signals, nor can they perform actual circuit wiring, instrument installation, and troubleshooting. Consequently, their ability to solve practical engineering problems is not effectively developed, resulting in a "disconnect between the virtual and the real."

[0005] In view of this, we propose a comprehensive training device for chemical instrumentation and control to solve the existing problems. Summary of the Invention

[0006] The purpose of this invention is to provide a comprehensive training device for chemical instrumentation and control to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a comprehensive training device for chemical instrumentation and control, comprising a circulating water tank, a lower water tank, an upper water tank and an integrated control cabinet, wherein a centrifugal pump is fixedly installed on the left side of the circulating water tank and a circulating pump is fixedly installed on the right side of the circulating water tank, a ninth gate valve is installed between the circulating water tank and the centrifugal pump, and an inlet regulating valve is fixedly installed between the circulating water tank and the circulating pump. A first ball valve is fixedly installed on the top of the centrifugal pump. A diaphragm pressure gauge and a first turbine flow meter are fixedly installed on the top of the first ball valve from bottom to top. Pipes A, B, C, D and E are arranged on the top of the first turbine flow meter from bottom to top. An upper drain pipe is fixedly installed on one side of the bottom of the upper water tank.

[0008] Preferably, a hot water tank is fixedly installed at the end of the pipe A away from the first turbine flow meter, and a rotor flow meter is fixedly installed in the pipe A; The end of pipe B away from the first turbine flow meter extends into the circulating water tank. An orifice plate flow meter is fixedly installed in pipe B, and a third gate valve is fixedly installed at the end of the orifice plate flow meter away from the first turbine flow meter. Electric ball valves are installed in parallel at both ends of pipe B located at the third gate valve, and a fourth ball valve and a fifth ball valve are fixedly installed at the connection points between the two ends of the electric ball valve and pipe B. The pipe C extends into the interior of the lower water tank, and a second ball valve is fixedly installed in the pipe C; The pipe D extends into the upper water tank, and a third ball valve is fixedly installed in the pipe D; The pipeline E is fixedly connected to the circulating pump, and a second turbine flow meter is fixedly installed in the pipeline E. A fifth gate valve is fixedly installed at the water inlet end of the second turbine flow meter in the pipeline E. A water distribution pipe is fixedly installed between the second turbine flow meter and the circulating pump, and the water distribution pipe extends into the circulating water tank. A seventh gate valve is fixedly installed in the water distribution pipe.

[0009] Preferably, a connecting pipe is fixedly installed at the bottom of the upper water tank, and the connecting pipe extends into the lower water tank, wherein a first gate valve is fixedly installed in the connecting pipe.

[0010] Preferably, two drain pipes are fixedly installed at the bottom of the lower water tank, and a second gate valve is fixedly installed in one of the drain pipes.

[0011] Preferably, the two drain pipes are connected at their ends, and after being connected, the drain pipes extend into the circulating water tank, and after being connected, they are connected to the upper drain pipe at the bottom of the upper water tank.

[0012] Preferably, a pipe F is fixedly installed on the top of the hot water tank, and the end of the pipe F extends to connect with the pipe E between the fifth gate valve and the second turbine flow meter. A fourth gate valve is fixedly installed in the pipe F. A temperature sensor is fixedly installed at the connection position between the pipe F and the top of the hot water tank. A hot water drain pipe is fixedly installed on the side of the hot water tank near the top, and the hot water drain pipe extends into the circulating water tank.

[0013] Preferably, a thermocouple is fixedly installed at the bottom of the hot water tank, and an H-shaped drain pipe is fixedly installed at the bottom of the hot water tank, while a magnetic level gauge is fixedly installed on the front of the hot water tank.

[0014] Preferably, one end of the bottom of the h-shaped drain pipe extends into the circulating water tank, and an eighth gate valve is fixedly installed in this section of the pipe. The other end of the bottom of the h-shaped drain pipe is fixedly connected to the output end of the circulating pump, and a sixth gate valve is fixedly installed in this section of the pipe.

[0015] Preferably, four display panels are installed on one side of the front of the integrated control cabinet, and several sets of indicator lights are fixedly installed on the other side of the front of the integrated control cabinet. From left to right, a main power switch, two centrifugal pump switches, a hot water pump switch, and a thermocouple switch are installed near the bottom of the front of the integrated control cabinet. An audible and visual alarm is fixedly installed on one side of the front of the integrated control cabinet, and an emergency switch is installed above the audible and visual alarm. The integrated control cabinet integrates a PLC programmable logic controller, analog input / output modules, multi-loop display and control instruments, an artificial intelligence temperature controller / regulator, a frequency converter, and terminal blocks. The panel of the integrated control cabinet is equipped with standard signal interfaces for various sensors and actuators, allowing users to freely connect wires to build a control system. A set of configuration and monitoring software runs in the integrated control cabinet, running on a host computer, and communicates with the PLC programmable logic controller and intelligent instruments to realize process visualization, parameter setting, data acquisition, curve display, alarm recording, and control system configuration functions.

[0016] Preferably, a first thermal resistor and a differential pressure sensor are fixedly installed in the circulating water tank; a second thermal resistor and a first pressure sensor are fixedly installed in the lower water tank; and a third thermal resistor and a second pressure sensor are fixedly installed in the upper water tank.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention encompasses the measurement and control of the four most common parameters in chemical processes, integrating more than ten different types of sensors, transmitters, and actuators. It can conduct more than fifteen typical experiments ranging from basic understanding to advanced control, providing comprehensive teaching functions. The device uses industrial-grade instruments and equipment, and its control strategies cover mainstream industrial control schemes such as PID, on-off, cascade, and ratio control. It can also simulate instrument failures and emergency conditions.

[0018] The hardware of this invention adopts an open pipeline structure and a flexible panel wiring layout, which facilitates the connection and expansion of various experimental equipment. The software provides open configuration tools and programming interfaces to support students' personalized configuration and function development. Students can fully practice the entire process from circuit construction, hardware connection to parameter debugging, program design and system integration, effectively improving their engineering practice ability, problem-solving ability and system integration ability, and enhancing their application level in the field of industrial control.

[0019] When applied to the field of safety engineering, this invention innovatively adds a safety simulation module to the traditional instrument operation training module, making the training content closer to actual engineering application scenarios and effectively improving students' safety awareness and emergency response capabilities. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 4 This is a process flow diagram of the chemical instrumentation and process control experimental device of the present invention.

[0021] In the diagram: 1. Circulating water tank; 2. Lower water tank; 3. Upper water tank; 4. Hot water tank; 5. Centrifugal pump; 6. Circulating pump; 7. First turbine flow meter; 8. Orifice plate flow meter; 9. Rotor flow meter; 10. Second turbine flow meter; 11. First RTD; 12. Second RTD; 13. Third RTD; 14. Thermocouple; 15. Differential pressure sensor; 16. First pressure sensor; 17. Second pressure sensor; 18. Electric ball valve; 19. First ball valve; 20. Second ball valve; 21. Third ball valve; 22. First gate valve; 2 3. Second gate valve; 24. Third gate valve; 25. Fourth ball valve; 26. Fifth ball valve; 27. Fourth gate valve; 28. Fifth gate valve; 29. ​​Magnetic float level gauge; 30. Sixth gate valve; 31. Diaphragm pressure gauge; 32. Seventh gate valve; 33. Eighth gate valve; 34. Inlet regulating valve; 35. Display panel; 36. Main power switch; 37. Centrifugal pump switch; 38. Hot water pump switch; 39. Thermocouple switch; 40. Indicator light; 41. Audible and visual alarm; 42. Emergency switch; 43. Ninth gate valve; 44. Temperature sensor. Detailed Implementation

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 - Figure 4 As shown, the present invention proposes a chemical instrumentation and control integrated training device, which includes a circulating water tank 1, a lower water tank 2, an upper water tank 3 and an integrated control cabinet. A centrifugal pump 5 is fixedly installed on the left side of the circulating water tank 1, and a circulating pump 6 is fixedly installed on the right side of the circulating water tank 1. A ninth gate valve 43 is installed between the circulating water tank 1 and the centrifugal pump 5, and an inlet regulating valve 34 is fixedly installed between the circulating water tank 1 and the circulating pump 6. A first ball valve 19 is fixedly installed on the top of the centrifugal pump 5. A diaphragm pressure gauge 31 and a first turbine flow meter 7 are fixedly installed on the top of the first ball valve 19 from bottom to top. Pipes A, B, C, D and E are arranged on the top of the first turbine flow meter 7 from bottom to top. A drain pipe is fixedly installed on one side of the bottom of the upper water tank 3.

[0024] The device is constructed from a welded stainless steel frame and includes a cold circulation system. This system includes at least one cold water tank (upper tank 3 or lower tank 2), a circulation pump 6, and several flow measurement instruments and regulating valves (electric ball valve 18 and ball valve) installed on the pipeline. The cold water tank is equipped with a pressure sensor for liquid level measurement and a thermal resistor for temperature measurement. Turbine flow meters and orifice plate flow meters 8 are connected in series or parallel on the pipeline of the cold circulation system, which can be used for comparative analysis and calibration tests of flow meters based on different principles. The cold circulation system can be configured in different ways through the upper tank 3, the lower tank 2, and several valves, so that the upper tank 3 and the lower tank 2 can form a single-tank or double-tank system, which can be used for liquid level characteristic testing and liquid level control experiments. The device also includes a thermal circulation system, which includes a hot water tank 4, a hot water pump (circulation pump 6) and a heating device. A magnetic float level gauge 29 installed on the hot water tank 4 is used for level measurement, and a temperature sensor 44 is used for temperature measurement.

[0025] Furthermore, a hot water tank 4 is fixedly installed at the end of pipe A away from the first turbine flow meter 7, and a rotor flow meter 9 is fixedly installed in pipe A; Pipeline B extends into the circulating water tank 1 at the end away from the first turbine flow meter 7. An orifice plate flow meter 8 is fixedly installed in pipeline B, and a third gate valve 24 is fixedly installed at the end of the orifice plate flow meter 8 away from the first turbine flow meter 7. Electric ball valves 18 are installed in parallel at both ends of pipeline B located at the third gate valve 24, and a fourth ball valve 25 and a fifth ball valve 26 are fixedly installed at the connection points between the two ends of the electric ball valve 18 and pipeline B. Pipe C extends into the interior of the lower water tank 2, and a second ball valve 20 is fixedly installed in pipe C; Pipeline D extends into the upper water tank 3, and a third ball valve 21 is fixedly installed in pipe D; Pipeline E is fixedly connected to circulating pump 6, and a second turbine flow meter 10 is fixedly installed in pipeline E. A fifth gate valve 28 is fixedly installed at the water inlet end of the second turbine flow meter 10 in pipeline E. A water distribution pipe is fixedly installed between the second turbine flow meter 10 and circulating pump 6, and the water distribution pipe extends into circulating water tank 1. A seventh gate valve 32 is fixedly installed in the water distribution pipe.

[0026] Furthermore, a connecting pipe is fixedly installed at the bottom of the upper water tank 3, and the connecting pipe extends into the lower water tank 2, and a first gate valve 22 is fixedly installed in the connecting pipe.

[0027] Furthermore, two drain pipes are fixedly installed at the bottom of the lower water tank 2, and a second gate valve 23 is fixedly installed in one of the drain pipes.

[0028] Furthermore, the ends of the two drain pipes are connected, and after the drain pipes are connected, they extend into the circulating water tank 1. After the drain pipes are connected, they are connected to the upper drain pipe at the bottom of the upper water tank 3.

[0029] Furthermore, a pipe F is fixedly installed on the top of the hot water tank 4, and the end of the pipe F extends to connect with the pipe E between the fifth gate valve 28 and the second turbine flow meter 10. A fourth gate valve 27 is fixedly installed in the pipe F. A temperature sensor 44 is fixedly installed at the connection position between the pipe F and the top of the hot water tank 4. A hot water drain pipe is fixedly installed on the side of the hot water tank 4 near the top, and the hot water drain pipe extends into the circulating water tank 1.

[0030] Furthermore, a thermocouple 14 is fixedly installed at the bottom of the hot water tank 4, and an h-shaped drain pipe is fixedly installed at the bottom of the hot water tank 4. A magnetic float level gauge 29 is fixedly installed on the front of the hot water tank 4.

[0031] Furthermore, one end of the bottom of the H-shaped drain pipe extends into the circulating water tank 1, and an eighth gate valve 33 is fixedly installed in this section of the pipe. The other end of the bottom of the H-shaped drain pipe is fixedly connected to the output end of the circulating pump 6, and a sixth gate valve 30 is fixedly installed in this section of the pipe.

[0032] Furthermore, four display panels 35 are installed on one side of the front of the integrated control cabinet, and several sets of indicator lights 40 are fixedly installed on the other side of the front of the integrated control cabinet. From left to right, the main power switch 36, two centrifugal pump switches 37, hot water pump switch 38, and thermocouple switch 39 are installed on the front of the integrated control cabinet near the bottom. An audible and visual alarm 41 is fixedly installed on one side of the front of the integrated control cabinet, and an emergency switch 42 is installed above the audible and visual alarm 41. The integrated control cabinet integrates a PLC programmable logic controller, analog input / output modules, multi-loop display and control instruments, artificial intelligence temperature controller / regulator, frequency converter, and terminal block. The panel of the integrated control cabinet is equipped with standard signal interfaces for various sensors and actuators, allowing users to freely connect wires to build a control system. A set of configuration monitoring software runs in the integrated control cabinet, running on a host computer, and communicates with the PLC programmable logic controller and intelligent instruments to realize process visualization, parameter setting, data acquisition, curve display, alarm recording, and control system configuration functions. like Figure 4 As shown, the integrated control cabinet is equipped with actuators, including electric regulating valves (DV01), solenoid valves (YV1, YV2, YV3), solid-state relays and frequency converters, which can realize setpoint control, on-off control, cascade control and ratio control of flow, liquid level and temperature parameters. The integrated control cabinet is equipped with configuration monitoring software that supports script programming and allows users to develop custom control algorithms based on Visual Basic or Visual C++ high-level languages, thereby enabling the design and verification of innovative control systems.

[0033] Furthermore, a first thermal resistor 11 is fixedly installed in the circulating water tank 1, and a differential pressure sensor 15 is fixedly installed in the circulating water tank 1; a second thermal resistor 12 is fixedly installed in the lower water tank 2, and a first pressure sensor 16 is fixedly installed in the lower water tank 2; a third thermal resistor 13 is fixedly installed in the upper water tank 3, and a second pressure sensor 17 is fixedly installed in the upper water tank 3.

[0034] The device composed of the above components and software can simulate various emergency conditions such as pressure transmitter overpressure, gas leakage, pipeline overpressure, excessively high or low liquid level, and flow control failure. It can be used for fault diagnosis and handling training. In addition, the configuration monitoring software has a data backtracking function and can store the parameters of each instrument, alarm records, interlock actions and operation logs.

[0035] Working Principle: Taking the "Single-Capacity Self-Balancing Water Tank Level Characteristic Measurement Experiment" as an example, in use, first connect the level signal of the lower water tank 2 and the turbine flow meter signal to the corresponding instruments. Then, set the parameters in the software interface, add pure water to the circulating water tank 1 until the tank level is about two-thirds full, check the valve status, open the inlet and outlet valves of the centrifugal pump 5 and the inlet and outlet valves of the lower water tank 2, and keep all other valves closed. Start the centrifugal pump 5 and control the flow rate of the turbine flow meter to 1.2 m³ / h. 3 / h, control the liquid level of the lower water tank 2 within the range of 80±10mm, and after stabilizing for 3min, add a step disturbance to the system by adjusting the frequency of the centrifugal pump 5. The software will automatically record the curve of the liquid level changing over time. Students can use this to analyze the dynamic characteristic parameters of the object and finally determine its first-order inertial element transfer function.

[0036] The above specific embodiments are merely several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A chemical instrument and control comprehensive training device, comprising a circulating water tank (1), a lower water tank (2), an upper water tank (3) and an integrated control cabinet, characterized in that: The left side of the circulating water tank (1) is fixedly installed with a centrifugal pump (5), and the right side of the circulating water tank (1) is fixedly installed with a circulating pump (6), a ninth gate valve (43) is installed between the circulating water tank (1) and the centrifugal pump (5), and an inlet regulating valve (34) is fixedly installed between the circulating water tank (1) and the circulating pump (6). The top of the centrifugal pump (5) is fixedly installed with a first ball valve (19), the top of the first ball valve (19) is sequentially fixedly installed from bottom to top with a diaphragm box pressure gauge (31) and a first turbine flowmeter (7), and the top end of the first turbine flowmeter (7) is sequentially provided from bottom to top with a pipeline A, a pipeline B, a pipeline C, a pipeline D and a pipeline E. The bottom side of the upper water tank (3) is fixedly installed with an upper drain pipe.

2. The chemical instrument and control comprehensive training device according to claim 1, characterized in that: The end of the pipeline A away from the first turbine flowmeter (7) is fixedly installed with a hot water tank (4), and a rotor flowmeter (9) is fixedly installed in the pipeline A; The end of the pipeline B away from the first turbine flowmeter (7) extends into the circulating water tank (1), a perforated plate flowmeter (8) is fixedly installed in the pipeline B, a third gate valve (24) is fixedly installed at the end of the perforated plate flowmeter (8) away from the first turbine flowmeter (7), electric ball valves (18) are installed in parallel at the two ends of the pipeline B located on the two sides of the third gate valve (24), and fourth and fifth ball valves (25) and (26) are fixedly installed at the positions where the two ends of the electric ball valves (18) are connected with the pipeline B; The pipeline C extends into the inside of the lower water tank (2), and a second ball valve (20) is fixedly installed in the pipeline C; The pipeline D extends into the upper water tank (3), and a third ball valve (21) is fixedly installed in the pipeline D; The pipeline E is fixedly connected with the circulating pump (6), a second turbine flowmeter (10) is fixedly installed in the pipeline E, a fifth gate valve (28) is fixedly installed at the water inlet end of the second turbine flowmeter (10) in the pipeline E, a water distribution pipe is fixedly installed between the second turbine flowmeter (10) and the circulating pump (6), the water distribution pipe extends into the circulating water tank (1), and a seventh gate valve (32) is fixedly installed in the water distribution pipe.

3. The chemical instrument and control comprehensive training device according to claim 1, characterized in that: The bottom of the upper water tank (3) is fixedly installed with a communication pipeline, and the communication pipeline extends into the lower water tank (2), and a first gate valve (22) is fixedly installed in the communication pipeline.

4. The chemical instrument and control comprehensive training device according to claim 1, characterized in that: The bottom of the lower water tank (2) is fixedly installed with two drain pipes, and a second gate valve (23) is fixedly installed in one of the two drain pipes.

5. The chemical instrument and control comprehensive training device according to claim 4, characterized in that: The tail ends of the two drain pipes are connected, the drain pipes extend into the circulating water tank (1) after being connected, and the drain pipes are connected with the upper drain pipe at the bottom of the upper water tank (3).

6. The chemical instrument and control comprehensive training device according to claim 2, characterized in that: The top of the hot water tank (4) is fixedly provided with a pipeline F, the end of which extends to the connection between the fifth gate valve (28) and the second turbine flow meter (10) and the pipeline E, the fourth gate valve (27) is fixedly arranged in the pipeline F, the temperature sensor (44) is fixedly arranged at the position where the pipeline F is connected to the top of the hot water tank (4), and the hot water drain pipe is fixedly arranged at the position close to the top of the side of the hot water tank (4) and extends into the circulating water tank (1).

7. The chemical instrument and control comprehensive training device according to claim 6, characterized in that: The bottom of the hot water tank (4) is fixedly provided with a thermocouple (14), and the bottom of the hot water tank (4) is fixedly provided with an h-shaped drain pipe, and the front of the hot water tank (4) is fixedly provided with a magnetic flap liquid level meter (29).

8. The chemical instrument and control comprehensive training device according to claim 7, characterized in that: One end of the bottom of the h-shaped drain pipe extends into the circulating water tank (1), and the eighth gate valve (33) is fixedly arranged in the water pipe, and the other end of the bottom of the h-shaped drain pipe is fixedly connected with the output end of the circulating pump (6), and the sixth gate valve (30) is fixedly arranged in the water pipe.

9. The chemical instrument and control comprehensive training device according to claim 1, characterized in that: The front side of the integrated control cabinet is provided with four display panels (35), and the front side of the integrated control cabinet is fixedly provided with a plurality of groups of indicator lights (40), the front side of the integrated control cabinet is provided with a total power switch (36), two centrifugal pump switches (37), a hot water pump switch (38) and a thermocouple switch (39) from left to right at the position close to the bottom, the front side of the integrated control cabinet is fixedly provided with an audible and visual alarm (41), and the upper side of the audible and visual alarm (41) is provided with an emergency switch (42), the integrated control cabinet is internally integrated with a PLC programmable logic controller, an analog input / output module, a multi-loop display control instrument, an artificial intelligence temperature controller / regulator, a frequency converter and a wiring terminal strip, the panel of the integrated control cabinet is provided with standard signal interfaces of various sensors and actuators, which are free to be wired by the user to build a control system, and the integrated control cabinet runs a set of configuration monitoring software, which runs on an upper computer and communicates data with the PLC programmable logic controller and the intelligent instrument, and is used for realizing process visualization, parameter setting, data acquisition, curve display, alarm recording and control system configuration functions.

10. The chemical instrument and control comprehensive training device according to claim 1, characterized in that: The first hot resistance (11) is fixedly arranged in the circulating water tank (1), and the differential pressure sensor (15) is fixedly arranged in the circulating water tank (1), the second hot resistance (12) is fixedly arranged in the lower water tank (2), and the first pressure sensor (16) is fixedly arranged in the lower water tank (2), the third hot resistance (13) is fixedly arranged in the upper water tank (3), and the second pressure sensor (17) is fixedly arranged in the upper water tank (3).

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