Core Function and Working Logic
This type of equipment is mainly used in conjunction with electric temperature regulating valves and is commonly employed in temperature control scenarios for heat transfer oil, steam, hot water, etc. (such as in ships, chemical industries, and HVAC systems):
The temperature sensor collects the temperature of the pipeline medium and feeds it back to the control module of the actuator;
The module compares the set value with the actual temperature and outputs a signal to drive the motor;
The motor drives the push rod to move, adjusts the valve opening, changes the flow rate of the medium, and ultimately achieves automatic stable temperature control.
Component disassembly and function description
Top handwheel:
Red manual operation wheel, used for manual emergency operation during power failure / malfunction to achieve valve opening and closing adjustment, ensuring system safety redundancy.
Main body housing:
The yellow shell is the protective cover for the motor and control module, bearing the brand logo "JINGLI-VALVE", the official website address, and safety warnings (reminding to remove the actuator when conducting pipeline pressure testing to avoid damaging internal components).
Temperature display panel:
Screen shows "Actual Temperature (℃)", providing real-time feedback on the temperature of the controlled medium;
Below the SET key and up/down arrows, used for setting the target temperature, parameter calibration, and achieving temperature closed-loop control.
Actuator:
The middle metal push rod and bracket structure, driven by the motor to perform up and down linear motion, driving the valve core below to adjust the medium flow rate, thereby controlling the temperature.
Bottom flange interface:
Used for connecting to the regulating valve body on the pipeline, transmitting the power of the actuator.
Ship and Marine Engineering Scenarios (Key Adaptation)
This is one of the core application areas of such equipment, adapted to the harsh working conditions of ships and the requirements for automation:
Power system cooling circuit
Main engine / auxiliary engine freshwater / seawater cooling system:
By controlling the cooling water volume, it maintains the working temperature of the engine cylinder liner water and lubricating oil stable, avoiding overheating shutdown or low-temperature wear.
Gas turbine, diesel generator set temperature control:
For power equipment with high precision temperature control requirements, it realizes PID closed-loop temperature control to ensure the efficiency and lifespan of the unit.
Marine HVAC and living system
Passenger cabin / crew cabin central air conditioning system:
Adjust the flow of chilled water / hot water to achieve zone constant temperature control, improving comfort and reducing energy consumption.
Living hot water system:
In the heat exchange stations of hotels / cruise ships, the steam / heat medium flow is adjusted according to the outlet water temperature to ensure constant temperature supply of living hot water.
Special system temperature control
SCR denitrification system urea solution heating:
Control the heating medium flow to maintain the urea solution temperature within the working range, ensuring the normal operation of the denitrification reaction.
Ballast water heating / cooling system:
Some ballast water treatment devices of ships need to adjust the temperature through temperature control to maintain process temperature and meet emission regulations requirements.
