Double-channel high-precision temperature control system

Abstract

The utility model relates to the technical field of automobile part testing, in particular to a double-channel high-precision temperature control system. The device comprises a temperature control unit, a plurality of groups of control systems communicated with the temperature control unit, tested parts respectively communicated with the control systems one by one, and a programmable logic controller (PLC) used for controlling the control systems and the temperature control unit, and is characterized in that the control systems are connected in parallel with the temperature control unit; the control system comprises an outlet pipeline used for connection, a ball valve arranged on the outlet pipeline, a flow meter, a proportional valve, a temperature sensor, a pressure sensor and a return pipeline. The beneficial effects of the utility model are that the technical scheme employs a dual-channel design, can independently carry out high-precision temperature control on two tested pieces at the same time, and improves the work efficiency; high-precision temperature control is achieved, an advanced temperature control unit and a high-precision sensor are adopted, and the temperature control precision can reach + / -0.1 DEG C;

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component testing, in particular to a dual-channel high-precision temperature control system. Background Art

[0002] In modern industrial production and scientific research, precise temperature control is crucial for ensuring product quality, improving production efficiency, and ensuring the accuracy of experimental results. With the continuous advancement of science and technology, the requirements for temperature control precision are becoming increasingly higher in various fields, especially in temperature-sensitive industries such as electronics manufacturing, the automotive industry, and scientific research.

[0003] Existing technology, CN202410793516.X, a temperature and pressure controllable hydraulic system with an oil return unit. Traditional temperature control systems often suffer from low accuracy, poor stability, and slow response speed. In single-channel temperature control, only one measured object can be temperature-controlled, which cannot meet the needs of some situations where different temperatures of multiple objects need to be controlled simultaneously. Moreover, traditional temperature control systems have difficulty achieving precise temperature regulation and stable temperature maintenance when faced with complex working environments and diverse measured objects.

[0004] In the automotive industry, performance and durability testing of auto parts must be performed within a specific temperature range. Traditional temperature control systems, lacking precision and stability, can lead to inaccurate test results, impacting the quality and safety of auto parts.

[0005] Therefore, it is necessary to design a dual-channel high-precision temperature control system to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a dual-channel high-precision temperature control system to overcome the above-mentioned deficiencies in the current prior art.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A dual-channel high-precision temperature control system, comprising a temperature control unit, several control systems connected to the temperature control unit, parts to be measured that are respectively connected to the control systems one by one, and a programmable logic controller (PLC) for controlling the control system and the temperature control unit. The system is characterized in that: the control system is connected in parallel to the temperature control unit, the control system comprises an outlet pipeline configured for connection, a ball valve, a flow meter, a proportional valve, a temperature sensor, a pressure sensor, and a return pipeline arranged on the outlet pipeline, the ball valve, flow meter, proportional valve, temperature sensor, and pressure sensor being arranged on the pipeline in sequence, the end of the outlet pipeline being connected to the part to be measured; one end of the return pipeline is connected to the part to be measured, and the other end is connected to the temperature control unit, and a filter and a ball valve placed behind the filter are provided on the return pipeline.

[0009] Preferably, the temperature control unit includes a control module, a heating module and a cooling module. The control module is connected to the programmable logic controller PLC, and the heating module and the cooling module are connected to the part to be tested.

[0010] Preferably, the filter is a detachable filter.

[0011] Preferably, it further comprises a display device, which is connected to the PLC and is used to display the operating status and measurement data of the system.

[0012] The beneficial effects of the utility model are as follows: the technical solution adopts a dual-channel design, which can independently perform high-precision temperature control on two test pieces at the same time, thereby improving work efficiency; high-precision temperature control, using advanced temperature control units and high-precision sensors, the temperature control accuracy can reach ±0.1°C; flexible flow regulation, through the combination of ball valves and electronically controlled proportional valves to achieve precise flow regulation, optimize the temperature control effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of a dual-channel high-precision temperature control system of the utility model;

[0014] In the figure: 1. Temperature control unit; 2. Programmable logic controller (PLC); 11. Outlet pipe; 12. Ball valve; 13. Flow meter; 14. Proportional valve; 15. Temperature sensor; 16. Pressure sensor; 17. Return pipe; 18. Filter; 19. Part under test. DETAILED DESCRIPTION

[0015] Reference Figure 1A dual-channel high-precision temperature control system includes a temperature control unit 1, a plurality of control systems connected to the temperature control unit, parts to be tested connected to the control systems one by one, and a programmable logic controller PLC2 for controlling the control systems and the temperature control unit;

[0016] The temperature control unit includes a control module, a heating module and a cooling module, the control module is connected to the programmable logic controller PLC, and the heating module and the cooling module are connected to the measured part;

[0017] The control system is connected to the temperature control unit, and includes an outlet pipe 11 for connection, a ball valve 12 provided on the outlet pipe 11, a flow meter 13, a proportional valve 14, a temperature sensor 15, a pressure sensor 16, and a return pipe 17. The ball valve, flow meter, proportional valve, temperature sensor, and pressure sensor are sequentially provided on the pipe.

[0018] The temperature sensor, pressure sensor and flow meter are all high-precision sensors to improve the measurement accuracy of the system; the ball valve and proportional valve are used to adjust the fluid flow in the system;

[0019] The end of the outlet pipe is connected to the part to be tested; one end of the return pipe is connected to the part to be tested, and the other end is connected to the temperature control unit. A filter 18 and a ball valve 12 are provided on the return pipe. The filter is detachable for easy cleaning and replacement.

[0020] Also included is a display device, which is connected to the PLC and is used to display the operating status and measurement data of the system;

[0021] This implementation case: Programmable Logic Controller (PLC): serves as the core control unit of the system, receiving sensor signals and issuing control instructions; Temperature Control Unit: consists of a control module and a heating / cooling module, connected to the device under test to control the temperature; Filter: removes impurities from the system and is detachable for easy cleaning and replacement;

[0022] After the system starts, the PLC initializes and performs a self-test. Sensor data is transmitted to the PLC, which then sends instructions to the temperature control unit to adjust the temperature of the test piece according to the preset control strategy. The PLC also controls the flow rate by adjusting the ball valve and electronically controlled proportional valve. A filter ensures fluid cleanliness, and a display shows system status and data in real time, facilitating operational control and troubleshooting.

[0023] Installation: Secure the PLC in a suitable control cabinet, ensuring it is well ventilated and easily accessible for operation and maintenance. Connect the power supply and communication lines to ensure the PLC can start normally and communicate with other devices.

[0024] Install the temperature control unit and connect it to the DUT 19 via appropriate piping. Ensure the connection is tightly sealed to prevent temperature leakage. Adjust the relative position of the heating / cooling module and the DUT as needed to achieve optimal temperature control.

[0025] Install the filter and select a suitable location to connect it to the fluid channel. Make sure the filter is installed in the correct direction to effectively filter impurities in the system.

[0026] Install temperature sensors, pressure sensors, and flow meters. Based on the system design requirements, install these sensors in the appropriate locations to ensure accurate detection of temperature, pressure, and flow parameters in the system. Connect the sensor signal cables to the PLC to transmit the detected data to the PLC for processing.

[0027] Install ball valves and proportional valves. Install these valves in appropriate locations based on the system's flow control requirements. Connect the valve control lines to the PLC so that the PLC can precisely control the valves based on the system's operating status.

[0028] Debugging steps: Program and parameterize the PLC. Based on the system's control requirements, write the appropriate control program and set appropriate parameters, such as temperature control targets, control strategies, and sensor calibration parameters. Download the program to the PLC using the programming software and perform preliminary debugging and testing to ensure proper operation.

[0029] Debug the temperature control unit. Set its parameters, such as heating / cooling power and temperature control range. Start the temperature control unit and observe its effectiveness in controlling the temperature of the DUT. By adjusting the parameters, ensure that the temperature control unit accurately controls the temperature of the DUT and meets the system's accuracy requirements.

[0030] Calibrate the sensors. Use standard measuring equipment to calibrate temperature sensors, pressure sensors, and flow meters. Input the calibrated parameters into the PLC to ensure that the sensors can accurately detect the parameters in the system.

[0031] Debug the ball valve and proportional valve. Use PLC to control the valve opening and observe its effect on the system flow. Adjust the valve control parameters so that the valve can accurately adjust the flow according to the system requirements.

[0032] Operation process

[0033] After the system starts, the PLC first initializes and self-checks each device, checking the connection status of sensors, valve opening, and the working status of temperature control units to ensure that the system is in a normal initial state.

[0034] The PLC receives real-time data from temperature sensors, pressure sensors, and flow meters. Based on pre-set control strategies, it processes and analyzes this data to calculate the current system temperature, pressure, and flow status.

[0035] Based on the calculation results, the PLC sends control instructions to the temperature control unit to adjust the working state of the heating / cooling module to control the temperature of the test piece. At the same time, the PLC sends control instructions to the ball valve and proportional valve according to the flow demand of the system to adjust the valve opening to control the flow of the system.

[0036] During system operation, the PLC continuously monitors and adjusts the operating status of each device. If the temperature, pressure, or flow rate exceeds the preset range, the PLC will take appropriate measures, such as adjusting the output power of the temperature control unit or the opening of the valve, to ensure that the system is always in a stable operating state.

[0037] During system operation, the display device shows the system's operating status and measurement data in real time. Users can intuitively understand the system's working conditions through the display device and perform parameter settings and operational control.

[0038] This new dual-channel, high-precision temperature control system can achieve high-precision temperature control of the test piece, meeting the temperature control needs of different fields. At the same time, through reasonable installation, commissioning, operation and maintenance, the stability and reliability of the system can be ensured, and the service life of the system can be extended.

[0039] The benefits of this utility model are that this technical solution adopts a dual-channel design, which can independently perform high-precision temperature control on two test pieces at the same time, thereby improving work efficiency; high-precision temperature control, using advanced temperature control units and high-precision sensors, the temperature control accuracy can reach ±0.1°C; flexible flow regulation, through the combination of ball valves and electronically controlled proportional valves to achieve precise flow regulation, optimize the temperature control effect.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dual-channel high-precision temperature control system comprising a temperature control unit, a plurality of control systems connected to the temperature control unit, parts to be tested that are connected one-to-one with the control systems, and a programmable logic controller (PLC) for controlling the control systems and the temperature control unit, characterized in that: The control system is connected to the temperature control unit in parallel. The control system includes an outlet pipeline configured for connection, a ball valve, a flow meter, a proportional valve, a temperature sensor, a pressure sensor, and a return pipeline configured on the outlet pipeline. The ball valve, flow meter, proportional valve, temperature sensor, and pressure sensor are sequentially configured on the pipeline. The end of the outlet pipeline is connected to the part to be measured; one end of the return pipeline is connected to the part to be measured, and the other end is connected to the temperature control unit. A filter and a ball valve placed on the rear side of the filter are also configured on the return pipeline.

2. The dual-channel high-precision temperature control system according to claim 1, characterized in that: The temperature control unit includes a control module, a heating module and a cooling module. The control module is connected to the programmable logic controller (PLC), and the heating module and the cooling module are connected to the part to be tested.

3. The dual-channel high-precision temperature control system according to claim 1, characterized in that: The filter is a detachable filter.

4. The dual-channel high-precision temperature control system according to claim 1, characterized in that: It also includes a display device, which is connected to the PLC and is used to display the operating status and measurement data of the system.

Images