The regulator ( 控制阀) , also known as control valves, in the field of industrial automation process control, by accepting conditioning control unit of the output control signal, from engine operation to change medium flow rate, pressure, temperature, liquid level of the process parameters such as final control element. And valve general, the executing agency. If the trip characteristics of regulating valve can be divided into straight stroke and stroke; By their ticket enforcement agencies use the power, can be divided into pneumatic control valve, electric Industrial Valves, hydraulic control valve; According to its functions and features are divided into linear features, such as percentage and parabolic characteristics of three. Regulator is applicable to air, water, steam, all kinds of corrosive medium, mud, oil, etc. Electric control valve for regulating the flow of medium, pressure and liquid level. System based on PLC control signal to adjust the opening of the valve, and a current value feedback to the PLC system, PLC system to a given signal and feedback signal, when there is deviation signal when judgment is positive or negative deviation, decided to forward rotation or reverse rotation of the motor, until a given signal and feedback signal is consistent, didn't stop the motor driver. And adjusted to the medium flow rate, pressure and liquid level, the PLC system in order to achieve ideal value. Flow capacity Cv value is one of the main parameters of electric control Industrial Valves, electric control valve flow capacity is defined as: when the electric control valve fully open, valve pressure difference on both ends of 0. 1 mpa, the fluid density is 1 g/cm3, flows through the electric control valve flow number per hour, called flow capacity, also known as the flow coefficient, expressed as a Cv, unit for t/h. Electric flow characteristic of regulating valve is the valve pressure difference on both ends under the condition of constant, the medium flows through the electric control valve of the relation between relative flow and its opening. Electric regulating valve the flow characteristic of linear features, such as percentage and parabolic characteristics of three. The meaning of three kinds of injection flow characteristic is as follows: ( 1) Such as percentage of features, Logarithmic) Percentage characteristics such as relative trip and no linear relationship between relative flow in the process of every point unit running change caused by the flow of change is proportional to the flow of this point, the percentage of the flow rate change is equal. So it has the advantage of traffic hours, changing flow is small, large flow, the flow rate change is big, is also on the different opening, has the same accuracy. ( 2) Linear features, Linear) Linear characteristic of relative stroke and the relative flow into a linear relationship. Unit trip caused by the changes in the flow rate change is constant. Large flow, the flow relative changes little, traffic hours, flow relative change is big. ( 3) Parabola changes flow according to the schedule 2 is proportional with linear and roughly equal percentage in the middle of the properties. Can be seen from the analysis of the above three kinds of characteristic, its regulation performance, is the optimal with characteristics such as percentage, its regulation stability, good regulation performance. And parabolic characteristics than the linear characteristic of regulating performance is good, can according to the requirement of the application, choose any of them a flow characteristic.
Shenzhen Mech Valve Trading Co., Ltd. is devoted to satisfy our customers with a wide array of the finest using experience.
Shenzhen Mech Valve Trading Co., Ltd. humbly request you to try this item in your centers and we assure you that you would be in a great pleasure with the results.
Innovative technology helped us produce a strong, reliable product as wedge gate valve for customers, offer superior quality and dependability to our customers, and scale at a quicker pace.
Shenzhen Mech Valve Trading Co., Ltd. knows how important it is to offer optional extras, such as ductile iron gate valveresilient seated valve to provide quality products for customers.
In various different types of resilient gate valve, resilient seal gate valve double flanged gate valve is one of the most commonly used.