The low-pressure gas regulator can achieve stable control of gas flow through proportional control technology. This technology allows the regulator to proportionally adjust the valve opening according to changes in input pressure, thereby maintaining the stability of the output gas flow. The following is a detailed explanation of how low-pressure gas regulators use proportional control to stabilize gas flow:

First, understanding the basic principles of proportional control is key. Proportional control is a feedback control system in which a regulator adjusts the output variable in proportion to changes in the input signal. In a low-pressure gas regulator, the input signal is usually from a sensor or pressure-sensing device inside the regulator that detects pressure changes in the input gas. The regulator compares the difference between the actual pressure and the set pressure, and adjusts the valve opening based on this difference to maintain the stability of the output gas flow.

Secondly, the key to proportional control is to set the appropriate proportional gain. Proportional gain refers to the proportional relationship between changes in the input signal causing changes in the output variable. In low-pressure gas regulators, the proportional gain is usually set by a control system or regulating device inside the regulator. By adjusting the proportional gain, the regulator can respond more accurately to changes in input pressure, thereby achieving stable control of the output gas flow.

Next, the control system inside the regulator will calculate the valve opening adjustment based on the set proportional gain. This adjustment will be reflected in the valve position to ensure that the output gas flow rate remains consistent with the set value. For example, if the input pressure increases, the regulator will increase the output gas flow by increasing the valve opening to compensate for the pressure change; conversely, if the input pressure decreases, the regulator will decrease the valve opening to reduce the output gas flow.

Finally, proportional control achieves stable control of gas flow by continuously monitoring changes in input pressure and output gas flow, and adjusting the valve opening according to these changes. This feedback mechanism enables the low-pressure gas regulator to adapt to gas delivery needs under different working conditions and ensure the normal operation of the system.

The low-pressure gas regulator achieves stable control of gas flow through proportional control technology, and maintains consistency between the output gas flow and the set value by adjusting the opening of the valve. This technology allows the regulator to adapt to pressure changes under different working conditions, ensuring stable and reliable gas flow in the delivery system.