The principle, application and technical description of the electric fluorine-lined ball valve
The electric fluorine-lined ball valve is lined with fluorine plastic, and is matched with a new type of ball structure with a rod, coupled with its unique elastic lip seal seat structure, it has The advantages of ordinary ball valves are that they can have high sealing performance and low operating torque in the range of large pressure difference and large temperature difference. It can be used for switching or adjustment. This product is suitable for the transportation of liquid and gas (including steam) in various industrial pipelines, and can work well in strong corrosive media such as various acids, alkalis, and salts. Full-bore valves provide maximum flow and can be used for sweep line cleaning or isolation of conveying pipelines. The products are widely used in the transportation of liquid and gas (including steam) in various types of industrial pipelines, especially in the use of severely corrosive media, such as: S acid, hydrofluoric acid, phosphoric acid, chlorine, strong alkali, aqua regia and other highly corrosive media. In pipeline engineering, the correct selection of electric fluorine-lined ball valve is one of the guarantee conditions to meet the application requirements. If the electric fluorine-lined ball valve used is improperly selected, it will not only affect the application, but also bring about adverse consequences or serious losses. Therefore, the electric fluorine-lined ball valve double-stage worm gear box should be correctly selected in the pipeline engineering design. The duty environment of the electric fluorine-lined ball valve: In addition to the pipeline parameters, the electric fluorine-lined ball valve should pay special attention to the environmental conditions of its duty. Since the electric device in the electric fluorine-lined ball valve is an electromechanical device, its duty state is affected by its duty environment. great influence. Under normal conditions, the obligatory environments of electric fluorine-lined ball valves are as follows: 1) Indoor installations or outdoor applications with protective methods; 2) Outdoor outdoor installations, which are eroded by wind, sand, rain, sun, etc.; 3) Flammable , explosive gas or dust environment; 4) Environment in wet and dry tropical regions; 5) The temperature of the pipeline medium is as high as 150 ℃ or more; 6) The ambient temperature is lower than -20 ℃; 7) It is easy to be flooded or immersed in water; 8 ) Environment with radioactive substances (nuclear power plants and radioactive substance test equipment); 9) Environment on ships or docks (with salt fog, mold, humidity); 10) Situations with severe vibration; occasions prone to fire; For the above Electric fluorine-lined ball valves in the environment have different electric device structures, materials and protection methods. Therefore, the corresponding fluorine-lined ball valve electric device should be selected according to the above-mentioned obligation environment. Functional requirements of electric fluorine-lined ball valve: According to engineering control requirements, for electric fluorine-lined ball valve, its control function is completed by an electric device. The purpose of applying electric fluorine-lined ball valve is to complete non-manual electrical control or computer control for the opening, closing and adjustment of the valve. The current application of electric devices is not just for diligent manpower. Because the functions and quality of products of different manufacturers are quite different, the selection of electric devices and the selection of fluorine ball valves are equally important to the project. Electrical control of electric fluorine-lined ball valves: Due to the continuous improvement of the level of industrial automation, on the one hand, the application of electric fluorine-lined ball valves is increasing, and on the other hand, the control requirements for electric fluorine-lined ball valves are also getting higher and higher. getting more complicated. Therefore, the design of the electric control of the electric fluorine-lined ball valve is always updated. With the improvement of science and technology and the popularization and application of computers, new and diverse electrical control methods will always appear. When considering the overall control of the electric fluorine-lined ball valve, attention should be paid to the selection of the control method of the electric fluorine-lined ball valve. For example, according to the needs of the project, whether to use the centralized control method, or the single control method, whether it is linked with other equipment, sequence control or computer sequence control, etc., the control principles are different. The fluorine-lined ball valve electric device manufacturer's sample only gives the standard electrical control principle, so the application department should conduct technical disclosure with the electric device consumer to clarify the technical requirements. In addition, when choosing an electric fluorine-lined ball valve, it should be considered whether to additionally purchase an electric fluorine-lined ball valve controller. Due to the general state, the controller needs to be purchased separately. In most cases, when using a single control, it is necessary to purchase a controller, because the purchase of the controller is more convenient and cheaper than the user's own design and manufacture. When the electrical control performance fails to meet the engineering design requirements, modification or redesign should be proposed to the consumer factory.
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