Solenoid valve, also called the electric valve. With the development of microelectronics and computer technology, more and more problems have arisen in the use of these electric valves. For example, the control accuracy is not high, field debugging is inconvenient, fault diagnosis method is not perfect, which makes the original electric valve more and more unable to meet the needs of modern industrial development, will be eliminated. Therefore, it is of great significance to effectively transform the electric valve, an important industrial mechanical product, to improve its intelligence, to computerize its control process, to digitize its communication function, to intellectualize fault diagnosis and processing, and to remotely detect it.
The actual valve position has only three positions: open, close and middle. The valve position is controlled by the output torque of the valve motor. At present, the stroke switch is usually used to control valve motor and torque switch to protect the valve. However, stroke switches and moment switches are usually installed on the electric actuator, so the valve position signal cannot be obtained directly from the valve shaft, which makes the indication value of the valve position only an approximate value, leading to the valve closed lax or inadequate opening. If the output torque is too small, it will cause difficulty in opening and closing the controlled valve, which will easily cause electric power and burning. If the output torque is too large, once the control of the electric actuator fails, it will easily cause damage to the local structure of the valve. Therefore, this control method can not directly control the opening and closing of the valve, and the control accuracy is relatively low.
All along, the solution to valve leakage is from the valve. Optimize the design of valve structure, select the material of valve according to different process conditions, improve the quality control level in the production process of the valve, and optimize the selection of valve according to various process conditions in the chemical production process.
Electric valves are composed of valves and electric actuators, but up to now, the production of these two parts is still produced by different manufacturers. The structure of the valve is relatively simple, while the structure of the electric actuator is relatively complex. Therefore, more and more people are turning their attention to the electric actuator and devoting themselves to improving its intelligence level.
In recent years, with the rapid development of microelectronics, computer, communication network technology, and electromechanical integration technology, valve electric actuator has developed rapidly. These intelligent sanitary valve electric actuators adopt microprocessor system, and all control functions can be realized by programming. At present, the main products of the advanced intelligent valve electric actuator are:
Adamant Valves introduced intelligent electric actuators including an electric actuated butterfly valve in the 1990s. Compared with ordinary actuators, they have the following characteristics:
(1) Convenient parameter remote control setting function. Before putting into use, as long as the special setting tool provided by the manufacturer is used, the alignment actuator can be set by remote control. It not only simplifies the setting of working procedures, but also improves the safe operation of equipment, especially in places requiring explosion-proof.
(2) Rich online display functions. Using liquid crystal display technology and built-in liquid crystal display board, not only can accurately display the valve opening and closing status and normal valve opening, but also can display important information when parameter setting or actuator failure occurs.
For more information, please visit http://www.adamantvalves.com/