Reasons for using electric actuators

In pipeline engineering, the correct selection of electric valves is to meet the requirements of the use of one of the guarantee conditions. If the use of electric valve selection is not appropriate, not only will affect the use, but also bring adverse consequences or serious losses, therefore, in the pipeline engineering design should be the correct choice of electric valve.
The work of electric valve
In pipeline engineering, the correct choice of electric valve is to meet the requirements of the use of one of the guarantee conditions. If the use of electric valve selection is not appropriate, not only will affect the use, but also bring adverse consequences or serious losses, therefore, in the pipeline engineering design should be the correct choice of electric valve.
Motorized valve working environment
In addition to the electric valve should pay attention to pipeline parameters, should pay special attention to the environmental conditions of its work, because the electric valve in the electric device is an electromechanical equipment, its work by the working environment has a great impact. Usually, the working environment of the electric valve has the following kinds:
1, indoor installation or protective measures for outdoor use;
2, outdoor open air installation, with wind, sand, rain, sunlight and other erosion;
3, with flammable, explosive gas or dust environment;
4, wet and hot zone, dry and tropical regions environment;
5, the pipeline medium temperature up to 480 ℃ or more;
6, the ambient temperature is lower than -20 ℃ below;
7, easily flooded or submerged in water;
8, with radioactive substances (nuclear power plants and radioactive substances test equipment) environment;
9, on board the ship or dock dock (with salt spray, mold, humidity) environment;
10, with severe vibration occasions;
11, easy to fire occasions;
Select the right valve electric device
For the above environment in the electric valve, its electric device structure, materials and protective measures are different. Therefore, should be based on the above working environment to select the appropriate valve motorized device.
According to the engineering control requirements, the electric valve, the control function is completed by the electric device. The purpose of using electric valves is to open, close and regulate the valve linkage to achieve non-manual electrical control or computer control. The current use of electric devices is not just to save labor. Due to the function and quality of different manufacturers of products vary greatly, therefore, the choice of electric device and the choice of the valve with the project is equally important.
Electrical control of electric valves
Due to the increasing requirements of the level of industrial automation, on the one hand, the use of electric valves more and more, on the other hand, the control requirements of electric valves are also more and more complex. So the design of electric valve in the electrical control is also constantly updated.
With the progress of science and technology and the popularization and application of computers, new and diverse electrical control methods will continue to appear. Consideration of the overall control of electric valves, should pay attention to the choice of electric valve control. For example, according to the needs of the project, whether to use a centralized control mode, or a single control mode, whether to linkage with other equipment, program control or the application of computer program control, etc., the control principle is not the same.
Valve electric device manufacturer samples given only the standard electrical control principle, so the use of the department should be with the electric device manufacturer for technical briefing, clear technical requirements. In addition, in the selection of electric valves, should consider whether the additional acquisition of electric valve controller. Because in general, the controller is required to purchase separately. In most cases, the use of a single control, is the need to purchase the controller, because the purchase of the controller than the user's own design, manufacture to be convenient and inexpensive. When the electrical control performance does not meet the engineering design requirements, should be proposed to the manufacturer to modify or redesign.