The electric actuator is the driving device of the electric valve, which is used to control the opening and closing of the valve. It is the essential driving device to realize the remote control, centralized control and automatic control of the valve Widely used in power stations, petrochemical, metallurgical, mining and public utilities and other fields.
Most of the travel transmission mechanisms which collect and transmit position feedback signals on traditional electric valve devices are bevel gears or helical gears with staggered shafts, which require high manufacturing accuracy and are difficult to assemble and adjust Thereby increasing the cost of the whole electric device. In addition, installation and adjustment will inevitably lead to errors, easy to lead to travel transmission gear wear, even stuck and other failures.
In view of the above reasons, it is proposed that the application of face gear transmission in the stroke transmission mechanism of Valve Electric Device can greatly reduce the occurrence of the above-mentioned faults. At the same time, because the pinion in face gear transmission is cylindrical spur gear, the axial direction need not be adjusted during installation, which simplifies the assembly.
The early face gear transmission used for low transmission accuracy, low load transmission systems, such as chain-less bicycles, fishing reel, etc. . With the development of research on face gear, face gear has been used more and more in aircraft which need high precision, high speed and high power. The face gear transmission used in the new helicopter main reducer transmission in the United States, compared with the original use of bevel gear transmission, the weight of the transmission device decreased 40% , load-carrying capacity increased 35% , and the shunt effect is good, vibration is small, noise is low. Because of the wide use of face gear in national defense industry, the research and application interest of face gear has been increased, and the effective use rate of electric actuator has been improved, the failure rate has been reduced, and the electric actuator has been applied more widely.
Post time: Nov-25-2021