How to adjust the pneumatic valve of the car?

How to adjust the pneumatic valve of the car?

Pneumatic control valve takes compressed gas as the power source and cylinder as the actuator. It drives the valve to realize on-off or proportional adjustment with the help of valve positioner, converter, solenoid valve, stop valve, gas storage tank, gas filter and other accessories, and receives the control signal of industrial automation control system to complete the adjustment of various process parameters such as flow, pressure, temperature and liquid level of pipeline medium.

Adjustment method of automobile pneumatic valve;

1. Turn on the air supply first and then the power supply. The first step is to search, because ITV is locked after booting. Press and hold the ▼ key until the screen Loc flashes, and press the set key to confirm, indicating that UNL search is completed, and 0.00 will appear on the screen.

2. Press set to confirm to enter the second step, and the minimum pressure is set. The screen shows that F_ 1 flashes alternately, and its pressure value is 0.00. Press the up and down keys ▲▼ to select the required pressure. The minimum pressure setting must be between 0% and 50% of the whole range, and the option is set to 0. 1MPa. Press the set key to confirm. At this time, even if there is no input signal, ITV has already input the minimum pressure value of 0. 1MPa just set.

3. Step 3: Maximum pressure setting. The screen shows F2 and its pressure value flashing. Press the up and down keys to select the desired pressure. The maximum pressure setting must be between 10% and 100% of the full range, with F_2 set to 0.6MPa, and press the set key to confirm.

4, pay special attention to, after setting F_ 1 and F_2, once you press the set key, ITV immediately starts to work according to the set values. If there is an error in operation, please cut off the power supply and reconnect it before setting.

The opening and closing direction of the mobile valve shall be clockwise. Because the pneumatic valves in the pipe network are often opened and closed manually, the number of opening and closing revolutions should not be too much, even for large-caliber valves, it should be within 200-600 revolutions. In order to facilitate the opening and closing operation of one person, the maximum opening and closing torque should be 240N-m under the condition of pipeline pressure. The opening and closing operation end of pneumatic valve should be square tenon, standardized in size and facing the ground, so that people can operate directly from the ground. Valves with disc are not suitable for underground pipe network.

Pneumatic control valve is characterized by simple control, rapid response, intrinsic safety and no need for additional explosion-proof measures.