Angle stroke electric actuator can improve the production efficiency and ensure the processing progress

In industrial production, angle stroke electric actuator is a kind of product used to control valve movement In the process of use, it has many advantages and can be used in the control of various valves Before use, we need to have a detailed understanding of the characteristics of the electric actuator to be able to use in different places according to the characteristics The angle stroke electric actuator is purchased and used according to the characteristics in use, which can improve the production efficiency and ensure the processing progress In the angle stroke electric actuator, it has the following characteristics 1 Different types can be used according to different places of use It can be divided into intelligent type, proportional type and switch type The output power of each type is different 2 The volume and weight of the electric actuator are very small, only 70% of the size of other control products, which can save the use space and increase the use area of the use place It is also very convenient to carry 3 The appearance has also been improved, so that the whole production can produce excellent aesthetics 4 Small return difference, which can improve the effect of use in the process of use Achieve precise control effect and avoid deviation 5 In the process of use, different voltages can be selected according to different locations, and 380 V or DC can be used for work 6 The safety is also improved, and all kinds of assurance devices are perfect It can ensure to avoid safety problems in the process of using electric actuator The reliability of angle stroke electric actuator refers to its ability to complete the specified functions under the specified conditions and within the specified time Generally specified conditions refer to: (1) load conditions: load characteristics that can affect the performance of electric actuator, such as torque, type and characteristics of controlled object, etc (2) use and maintenance conditions: the reliability of the electric actuator can only be realized in use and improved in maintenance For use and maintenance conditions, the first thing to pay attention to is that the use and maintenance should be improved; the second is that the operator must reach the corresponding technical level (3) environmental conditions: refer to the environmental characteristics that can affect the performance of electric actuator, such as temperature, humidity, air pressure, magnetic field, mechanical shock, vibration, dust, etc (4) dynamic condition: refers to the dynamic characteristics that can affect the performance of angle stroke electric actuator "Specified conditions" is an important and easily neglected part in the definition of electric actuator reliability Under different conditions, its reliability is absolutely different It is meaningless to talk about reliability without specific conditions The "specified function" is the parameters of the electric actuator to complete the task, such as torque, on / off and time, stroke, dead time and so on The reliability variation law of electric actuator in its life is the basis of studying its reliability, which depends on early failure, random failure and loss failure In theory, reliability (R) is commonly used to represent the reliability of equipment It refers to the probability that the equipment can complete the specified function within the specified conditions and time For the sake of simplicity and intuitiveness, the industry of electric actuator simply uses MTBF (mean time between failures) to represent the characteristic quantity of reliability, and as the performance index representing the reliability of electric actuator
The reliability of electric actuator is generally restricted and influenced by the following main factors: system selection and design, component / component applicability, action parameters, mechanical structure, manufacturing technology, assembly degree, operation and maintenance personnel capacity, operation and maintenance procedures, operation correctness, maintenance results, site assembly and construction conditions, degradation of spare parts performance, transportation and use impact, etc 。 In order to make the angle stroke electric actuator have many functions and excellent performance, it is often necessary to increase the complexity of the system structure In order to ensure that these functions and performance are put into practice in use, the reliability problem is more prominent Because the electric actuator directly controls the operation process of the unit and affects the safe and economic operation of the unit and the power plant, it is very important and significant to study and analyze the reliability of the electric actuator.