explosion-proof electric actuator
Technical Parameters
Power supply: conventional, three-phase 380V (50Hz)
Special, three-phase 660V, 415V (50HZ, 60Hz)
Single-phase 220V, 110V (50Hz, 60Hz)
Working mode: short-term 10 minutes (special order 30 minutes)
Ambient temperature: -20C~+60C (special order -40C~+80C)
Relative humidity: ≤90% (at 25C)
Protection level: IP67 (Special order IP68)
Explosion-proof level: The mark of explosion-proof products is ExdIIBT4
Product Overview
The Z series multi-turn electric valve actuator (abbreviated as: Z-type electric actuator) is a mature industrial valve supporting equipment. It can be directly used for gate valves, globe valves, diaphragm valves, sluice gates and other valve plates with linear motion or multiple turns of valve stems, as well as the drive control of similar mechanisms. The Z series electric actuator can also be combined with different types of reduction mechanisms to increase its power output or change the drive type of the whole machine. Therefore, when the Z-type electric actuator is combined with a part-turn reduction mechanism such as a worm gear or planetary gear, the whole machine constitutes a part-turn electric device. At this time, it can be used for the drive control of valves (generally 90°) or similar mechanisms such as ball valves, butterfly valves, and plug valves whose valve discs work as part-turn motion.
The Z series electric valve actuator has the advantages of complete functions, reliable performance, and easy use and maintenance. It can realize remote control, centralized control and automatic control of valves and can be widely used in industrial fields such as power, metallurgy, petrochemicals, light industry, and municipal administration. According to the relevant provisions of GB/T 24923-2010 "Technical Conditions for Ordinary Electric Valve Actuator" and combined with the application characteristics of electric valves in my country, our company has completed the further optimization design of the product and strengthened the quality control of the product manufacturing and test inspection process, so that the comprehensive performance of the Z-type electric actuator has been significantly improved and has been widely praised by users. Z series electric devices are divided into ordinary type and flameproof type. The flameproof type products comply with GB 3836.1-2010 "Explosive Atmosphere Part 1: General Requirements for Equipment" and GB 3836.2-2010 "Explosive Atmosphere Part 2; Equipment Protected by Flameproof Enclosures". Both the ordinary and explosion-proof types of Z series electric devices have outdoor protection performance. The control types of Z series electric devices include basic type, integral type and integral adjustment type for users to choose from. The connection type of its output shaft and valve can also provide torque type or phase torque thrust type according to user requirements. The excellent cost performance of Z series electric devices makes it the first choice for economical multi-turn valve electric devices.
Product composition
Control unit
Handwheel
Motor
Cable entry
Why is there an explosion?
Explosion is the sudden change of matter from one state to another state through physical or chemical changes, and the release of huge energy. The energy released at a rapid speed will cause the surrounding objects to suffer violent impact and damage. the Three conditions must be met for an explosion: explosive substance, oxygen, and ignition source. Objectively, many industrial sites meet the explosion conditions. When the mixed concentration of explosive substances and oxygen is within the explosion limit range, if there is an explosive source, an explosion will occur.
Preventing the generation of explosion must be considered from the above three necessary conditions, and limiting one of the necessary conditions limits the generation of explosion. Electrical equipment is also a potential source of ignition. When the machine is running, it will cause the surface temperature to rise, electrostatic discharge or electric sparks caused by instantaneous current. From the design point of view, flameproof electrical equipment can seal the ignited explosive mixture in a casing, which is particularly strong, can withstand the explosion pressure of the internal explosive mixture, and prevent the explosion of the explosive mixture outside the casing. Therefore, explosion-proof electrical equipment can be prevented from becoming a potential source of ignition.
The explosion-proof electric actuator produced by our company is designed to prevent internal sparks or explosion carriers from contacting the outside through the explosion-proof surface of the shell. The gap between the explosion-proof joint surface (≤0.15mm) and the large enough Face width (12.5mm-25mm) to ensure this. In addition, the joint surfaces of each component, such as the number of thread turns, thread accuracy, zero point, screw, between the finger window and the shell, the gap between the motor and the output port, the component and the component, and the wire port, etc., are all in accordance with the interval Design according to the requirements of the explosion, so as to ensure that the high pressure generated by the internal explosion will not damage the actuator.
Certificates
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