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Multi-Turn On-off Actuator Use Performance
- Jul 07, 2017 -

As a power valve of the electric valve, Multi-Turn On-off Actuator a direct impact on the use of electric valve performance. As one of the terminal parts of the automatic control of the power station, electric valves play a vital role in the power station. Therefore, the choice of the electric actuator of the valve will directly affect the reliability, safety, economy and even the whole power plant. Off the normal operation of the unit. Multi-Turn On-off Actuator Electric actuators according to its mode of operation, Multi-Turn On-off Actuator divided into the rotation, straight travel and angular travel 3 kinds. The following discussion on the selection of electric actuators for power station valves.

According to the use of the selected valve operating conditions to determine whether the electric actuator is adjustable or switch type. We know that under normal circumstances, Multi-Turn On-off Actuator the electric control valve used by the actuator for the regulation type; electric gate valve, Multi-Turn On-off Actuator globe valve used in the actuator for the switch type. But the type of valve is not the only determinant of the selection of electric actuators. When we choose to use a regulated or switched type electric actuator for an electric valve, the frequency of use of the valve in the unit time determines which electric Actuator. For example, the use of remote manual control of the control valve to say, you can also use the switch-type electric actuator. Multi-Turn On-off Actuator In the past, electric actuators were strictly divided into switch-type electric devices and adjustable type of electric actuators, so our country still has the corresponding national standards for such products have a strict definition and requirements. But with a large number of imported, imported electric actuators into the market, as well as the continuous improvement of the level of automation, electric actuators continue to the standardization, modular, Multi-Turn On-off Actuator intelligent changes, the current market, electric actuators are mainly switch-type electric And adjustable electric actuators. Switch type electric actuators are commonly used products in the past, such as ZZ series of Changzhou power station auxiliary plant, DZW series of Yangzhou electric power repair factory, all adopt 15 min short working system, usually start frequency is usually '100 times, Applicable to the request is not high, the action is not frequent two-valve, Multi-Turn On-off Actuator because it has a large power, low cost, better reliability advantages, is still widely used in power plants. In recent years, Multi-Turn On-off Actuator some manufacturers are also based on the old products, have extended the development of an integrated electric device, and according to the need to provide 4 ~ 2O mA feedback current signals, Multi-Turn On-off Actuator such as Changzhou Power Station auxiliary plant ZB integration series. Multi-Turn On-off Actuator Although the price of the old product has increased, but for the power plant to provide more types of control valve electric actuator.

As the control valve in the past only play a regulatory role, Multi-Turn On-off Actuator the front often set with a cut-off valve, so usually on the valve leakage level requirements are not high, so to reduce the valve action required torque balanced structure, limited to the design and manufacture of electric actuators Level, so the regulated electric actuator is usually a small power electric actuator. Multi-Turn On-off Actuator Such as automation instrument 11 factory DKZ series. However, with the continuous improvement of the requirements of the control valve, as well as power station design to large capacity, high parameter development, Multi-Turn On-off Actuator the original electric actuator power has been unable to meet the requirements of adjustable electric actuators have gradually began to use high-power products.