The selection of electric ball valves
1. An electric ball valve is a fluid control component, which is widely used in the fluid pipeline system. It has a very good effect on controlling flows, pressure, reflux and so on. Because the quality of the electric ball valve has a great influence on the safety of the pipeline, when we choose the electric ball valve, it must be selected according to certain steps and basis.
2. Know the pipe diameter, pressure and temperature used by the company, and know the caliber and connection mode of electric ball valves should be selected.
3. According to the needs of the pipeline, first determine some common parameters of electric ball valves, such as discharge capacity, allowable flow resistance, diameters of valve seat holes, etc. If these parameters are not selected correctly, the effect of electric ball valves in controlling flow will be greatly reduced.
4. According to the working temperature of the fluid medium in the pipeline, the appropriate material should be selected. Of course, the working pressure of the pipeline should also be taken into account.
In addition, we should be remindful that we can not rush to select products. We should understand performance of electric ball valves before we buy them.
Besides the pipe parameters, we also need to pay special attention to the environmental conditions of the electric valve. Since the electric device in the electric valve is an electromechanical device, its working state is greatly affected by its working environment.
Under normal conditions, special attention should be paid to the use of electric ball valves in the following working environment:
1. Indoor devices or outdoor applications with protection mode
2. Flammable, explosive gas or dust environment
3. Humid and dry tropical environment
4. The temperature of the pipeline medium is higher than 450 ℃.
5. The ambient temperature is lower than - 20 ℃.
6. It is easy to be flooded or immersed in water.
7. Environment with radioactive materials (nuclear power plants and radioactive material test devices)
8. The environment on the ship or dock (with salt fog, mould and humidity)
9. Occasions are prone to fire.
For the electric ball valve in the above environment, the structure, material and protection mode of the electric device are different. Therefore, the corresponding valve electric device should be selected according to the above working environment.
Functional requirements for electric ball valves
According to the engineering control requirements, for the electric ball valve, its control function is completed by the electric device. The purpose of the application of the electric ball valve is to complete non manual electrical control or computer control of valve opening, closing and regulating linkage. At present, the application of electric device is not only for labor saving. Because the function and quality of products from different manufacturers are quite different, it is equally important to select the electric device and the valve.
Electric control of electric ball valves
Because of the improvement of industrial automation level, on the one hand, the application of the electric valves is more and more. On the other hand, the control requirements for electric valves are also higher and more complex. Therefore, the design of the electric valve in electrical control is always updated. In consideration of the overall control of electric valves, attention should be paid to the selection of control mode of electric valves. For example, according to the needs of the project, whether to apply centralized control modes or single control modes, or whether to connect with other equipment. The control principle is different. The sample of valve electric device manufacturer only gives the standard electrical control principle, so the application department should make technical disclosure with the electric ball valve manufacturer to clarify the technical requirements.
1. An electric ball valve is a fluid control component, which is widely used in the fluid pipeline system. It has a very good effect on controlling flows, pressure, reflux and so on. Because the quality of the electric ball valve has a great influence on the safety of the pipeline, when we choose the electric ball valve, it must be selected according to certain steps and basis.
2. Know the pipe diameter, pressure and temperature used by the company, and know the caliber and connection mode of electric ball valves should be selected.
3. According to the needs of the pipeline, first determine some common parameters of electric ball valves, such as discharge capacity, allowable flow resistance, diameters of valve seat holes, etc. If these parameters are not selected correctly, the effect of electric ball valves in controlling flow will be greatly reduced.
4. According to the working temperature of the fluid medium in the pipeline, the appropriate material should be selected. Of course, the working pressure of the pipeline should also be taken into account.
In addition, we should be remindful that we can not rush to select products. We should understand performance of electric ball valves before we buy them.
Besides the pipe parameters, we also need to pay special attention to the environmental conditions of the electric valve. Since the electric device in the electric valve is an electromechanical device, its working state is greatly affected by its working environment.
Under normal conditions, special attention should be paid to the use of electric ball valves in the following working environment:
1. Indoor devices or outdoor applications with protection mode
2. Flammable, explosive gas or dust environment
3. Humid and dry tropical environment
4. The temperature of the pipeline medium is higher than 450 ℃.
5. The ambient temperature is lower than - 20 ℃.
6. It is easy to be flooded or immersed in water.
7. Environment with radioactive materials (nuclear power plants and radioactive material test devices)
8. The environment on the ship or dock (with salt fog, mould and humidity)
9. Occasions are prone to fire.
For the electric ball valve in the above environment, the structure, material and protection mode of the electric device are different. Therefore, the corresponding valve electric device should be selected according to the above working environment.
Functional requirements for electric ball valves
According to the engineering control requirements, for the electric ball valve, its control function is completed by the electric device. The purpose of the application of the electric ball valve is to complete non manual electrical control or computer control of valve opening, closing and regulating linkage. At present, the application of electric device is not only for labor saving. Because the function and quality of products from different manufacturers are quite different, it is equally important to select the electric device and the valve.
Electric control of electric ball valves
Because of the improvement of industrial automation level, on the one hand, the application of the electric valves is more and more. On the other hand, the control requirements for electric valves are also higher and more complex. Therefore, the design of the electric valve in electrical control is always updated. In consideration of the overall control of electric valves, attention should be paid to the selection of control mode of electric valves. For example, according to the needs of the project, whether to apply centralized control modes or single control modes, or whether to connect with other equipment. The control principle is different. The sample of valve electric device manufacturer only gives the standard electrical control principle, so the application department should make technical disclosure with the electric ball valve manufacturer to clarify the technical requirements.
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Previous: Notes for Quick Installation of Ball Valves
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