Regulating valve and seals
Jun 26, 2022
Control valve, also known as control valve, in the field of industrial automation process control, by accepting the control signal output by the adjustment control unit, with the help of power operation to change the medium flow,
The final control element for process parameters such as pressure, temperature and liquid level.
Regulating valve one - used to adjust the process parameters such as medium flow, pressure, temperature, liquid level and so on in the field of industrial automation process control. According to the control signal in the automation system, automatically
Adjust the opening of the valve], so as to realize the adjustment of medium flow, pressure, temperature and liquid level. The regulating valve is usually composed of an electric actuator or a pneumatic actuator and two parts of the valve body.
to make. There are mainly two types of straight-through single-seat type and through-through two-seat type. The latter has the characteristics of large flow capacity, small unbalanced operation and stable operation, so it is usually especially suitable for large flow.
applications with low volume, high pressure drop and leakage. The main angular strokes are: type electric regulating ball valve, electric butterfly valve, ventilation regulating valve, eccentric butterfly valve, etc. The flow capacity Ccr value is the selection of the control valve
main parameters.
The flow capacity of the regulating valve is defined as: when the regulating valve (regulating valve seal) is fully opened, the pressure difference between the two ends of the valve is 0.1MPa, and the fluid density is 1g/cms, the flow path per hour
The flow rate of the regulating valve, called the flow capacity, also called the flow coefficient, is expressed in Cv, the unit is t/h, and the Cr value of the liquid is calculated as follows. Whether these controls are energy exchange, pressure
Force reduction or simple container filling requires some final control element to accomplish. The final control element can be thought of as the "physical force" of the automatic control. Low energy in the regulator
Between the functions required to perform flow fluid control, the final control element completes the necessary power amplification.
