The debugging and usage precautions of electric gate valves are key links to ensure their normal operation and extend their service life.

Here is a detailed guide:

1

Before debugging the electric gate valve, first manually adjust the valve actuator to the middle position to ensure that the operation mode is local operation. After the power is turned on, check whether the direction of the valve actuator is consistent with the direction of the valve. If the direction is not consistent, adjust the phase of the power line. Next, set the closing limit of the valve and use a multimeter to check if the limit is correct. If not, adjust the spacing to the accurate position.

II

After debugging is completed, further debug to enable the limit. Firstly, check if the opening limit signal is correct. After adjustment, move the valve actuator back and forth to observe if the signal is normal. Ensure the accuracy of the feedback current of the electric valve actuator, as the feedback current directly affects the accuracy of the signal. When debugging, input mA into the multimeter and connect it in series with the feedback loop to observe if the feedback value is 4mA or 20mA. If the value is incorrect, adjust the feedback value of the zero potentiometer until it is accurate.

III

Finally, set the valve operation mode to remote operation mode. Use a signal generator to input 4mA and 20mA signals, observe whether the valve position is correct, and ensure that the feedback value is consistent with the given value. If there is inconsistency, repeat the above steps until the debugging is qualified.

What are the precautions for using electric gate valves:

1: Electric gate valves can be installed on horizontal or vertical pipelines. Single and double gate gate valves should be installed on horizontal pipelines, and the handwheel should be located above the valve. It is forbidden to install them facing downwards. The flow direction of the medium in the gate valve is not restricted.

2: For large-diameter and high-pressure gate valves, the opening and closing torque is relatively large. To reduce the opening and closing torque, a bypass valve can be installed. The bypass valve is installed outside the main gate valve and is connected to both sides of the main valve. Before opening, first open the bypass valve to reduce the pressure difference before and after the main gate valve and decrease the opening torque. The diameter of the bypass valve should be selected according to the main valve diameter and usage requirements.

3: Pay attention to the influence of medium temperature and pressure on the reliability of valve use. In high temperature and high pressure environments, temperature changes may cause the gate to get stuck, and uneven medium temperature can easily lead to unsealing.