The structure principle of the electric ball valve
electric ball valve structure brief, only by a few parts, information consumption province; Small volume, light weight, small installation size, small drive moment, pressure regulating valve, easy to operate, agile, only need to rotate for 90 & deg; Can quick opening and closing; And at the same time has good flow regulating effect and also closed sealing characteristics, in the category of the application of large and medium caliber, low and medium pressure, electric ball valve is the dominant situation of the valve. Electric ball valve is in full open position when the butterfly plate thickness is the only resistance when the medium flows through the body, so by what happens to the valve pressure drop is small, so it has good flow control characteristics. Electric ball valve seal and metal sealing machine has two sealing type. Elastic sealing valve, sealing ring can be embedded in the body or attached to the butterfly plate peripheral. Take the metal sealing valve generally live longer than elastic sealing valve, but it's hard to do complete seal. Metal sealing can adapt high working temperature, the elastic seal is to be in the missing point temperature limit. If the request of electric ball valve used as flow control, it is important to accurately select the size and type of valve. The structure principle of the electric ball valve is particularly suitable manufacturing large diameter valves. Electric ball valve not only in oil and gas, chemical industry, water disposal industry widely applied, but also used in cooling water system of thermal power plants. Commonly used electric ball valve has a wafer electric ball valve and flange electric ball valve two kinds. Wafer electric ball valve is made of stud bolt connecting the valve in place between two pipe flanges and flanged electric ball valve is the valve flange, bolts on the valve flange connection on both ends on the pipe flange. The strength of the valve performance is to point to suffer medium pressure valve. Valve is suffered internal pressure of mechanical products, and therefore must have sufficient strength and rigidity, to ensure the long-term use without rupture or deformation occurred.