As an important pipeline control equipment, the commissioning of electric hard sealed butterfly valve is very important. The correct debugging method can ensure that the valve accurately controls the medium flow, prolongs the service life, and ensures the safe and stable operation of the system. Electric butterfly valve manufacturers share the debugging steps and precautions of electric hard seal butterfly valves.
1. Preparation before commissioning
1. Check the appearance of the valve
Make sure that the appearance of the valve is intact and free from bumps, cracks and other defects.
2. Check the power cables
Ensure that the power wiring is correct and reliable, and the voltage meets the requirements of the electric actuator.
3, check the valve installation
Ensure that the valve is installed in the correct direction and the flange bolts are evenly tightened.
4. Manually operate the valve
Manually operate the valve to make sure that the valve switch is flexible and there is no jam.
Second, the commissioning of electric actuator
1, set the travel limit
Manually close the valve to the fully closed position and adjust the limit switch to operate when the valve is fully closed.
Manually open the valve to the full open position and adjust the open limit switch to operate when the valve is fully open.
2. Set torque protection
According to valve specifications and medium characteristics, set the appropriate torque protection value to prevent valve overload damage.
3. Test the switch function
Test the valve switch function through the control signal to confirm that the valve can accurately execute the switching instructions.
Three, valve sealing performance debugging
1, low pressure seal test
Close the valve, pass a low pressure gas or liquid into one end of the valve, and check the other end for leaks.
2, high pressure sealing test
Close the valve, pass the medium of design pressure into one end of the valve, and check the other end for leakage.
3, adjust the sealing pair
If leakage is found, you can adjust the preload of the seal pair or replace the seal until the sealing requirements are met.
Fourth, the work after commissioning
1, record debugging data Record valve stroke, torque, sealing performance and other debugging data, convenient for future maintenance and overhaul.
2. Clean up the debris generated in the process of cleaning and commissioning, and keep the site clean and tidy.
Delivery The qualified electric hard seal butterfly valve will be commissioned and provided with the necessary operation and maintenance instructions.
5. Debugging precautions
1, the debugging personnel should have the corresponding professional knowledge and skills, familiar with the valve structure and working principle.
2. Safety operation procedures should be strictly observed during commissioning to prevent accidents.
3, after the completion of debugging should be a comprehensive inspection and testing to ensure that the valve performance meets the requirements.
