In the pipeline project, the correct use of electric valve is to meet the requirements of the use of one of the 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, The electric valve should be used correctly in the engineering design.

First, the http://en.luobai.org/content/Working environment of electric valves

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 a mechanical and electrical equipment, its work by its http://en.luobai.org/content/Working environment greatly affected.

Under normal circumstances, the electric valve in which the following http://en.luobai.org/content/Working environment:

1, indoor installation or protective measures for outdoor use;

2, outdoor open air installation, wind, sand, rain, sun and other erosion;

3, with flammable, explosive gas or dust environment;

4, wet and tropical, dry tropical environment;

5, the pipeline medium temperature up to 480 ℃ above;

6, the ambient temperature below -20 ℃;

7, easily flooded or flooded;

8, with radioactive material (nuclear power plant and radioactive material test device) environment;

9, the ship or dock dock (with salt spray, mold, wet) environment;

10, with severe vibration of the occasion;

11, prone to fire occasions;

For the electric valve in the above environment, the structure of the electric device, material and protective measures are different. Therefore, should be based on the above http://en.luobai.org/content/Working environment to select the appropriate valve electric device.

Second, the electric valve function requirements

According to the engineering control requirements, the electric valve is concerned, its control function is completed by the electric device. The purpose of the use of electric valves, is the valve on and off and adjust the linkage to achieve non-artificial electrical control or computer control. The current use of electric devices is not just to save manpower. As the different manufacturers of product features and quality differences, therefore, select the electric device and choose the valve with the same important.

Third, the electrical control of electric valves

As the requirements of the level of industrial automation continue to improve, on the one hand the use of electric valve more and more, on the other hand, the control requirements of electric valves are getting higher and more complex. So the electric valve in the electrical control design is also constantly updated. With the advancement of science and technology and the popularization and application of computers, new and diversified electrical control methods will continue to emerge. On the overall control of electric valve considerations, should pay attention to select the electric valve control mode. For example, according to the needs of the project, whether to use centralized control, or a single control, whether with other devices, program control or application of computer program control, etc., the control principle is not the same. Valve electric device manufacturers sample is given only the standard electrical control principle, so the use of the department should be with the electric device manufacturing plant technology to the end, clear technical requirements.

In addition, when selecting the electric valve, should consider whether to purchase additional electric valve controller. Because of the general situation, the controller is required to be purchased separately. In most cases, the use of a single control, is the need to buy the controller, because the purchase controller than the user to design, manufacturing to be convenient and cheap. When the electrical control performance can not meet the engineering design requirements, should be proposed to the manufacturer to modify or redesign.