Abstract: An intelligent integrated medium-voltage alternating current (AC) vacuum switchgear based on a flexible switching-closing technology comprises a controller (24), and a vacuum switching tube (1), an insulator (9), and an switching-closing mechanism connecting piece (15), which are connected in sequence. A microprocessor is built in an intelligent circuit (23); a travel sensor is fixed to a movable contact connecting rod (5), and directly detects a motion state of a movable contact (4) and acquires accurate motion parameters of the movable contact (4); switching-closing operating parameters are obtained by comprehensively calculating arc light intensity detected by an arc light transmitter (20) and a temperature measured by an infrared temperature measuring transmitter (22), such that the switching-closing performance of switching on and switching off a medium-voltage power grid is greatly improved, switching-closing time points are accurately controlled, and “flexible” switching-closing is achieved.

Abstract: An intelligent integrated medium-voltage alternating current (AC) vacuum switchgear based on a flexible switching-closing technology comprises a controller (24), and a vacuum switching tube (1), an insulator (9), and an switching-closing mechanism connecting piece (15), which are connected in sequence. A microprocessor is built in an intelligent circuit (23); a travel sensor is fixed to a movable contact connecting rod (5), and directly detects a motion state of a movable contact (4) and acquires accurate motion parameters of the movable contact (4); switching-closing operating parameters are obtained by comprehensively calculating arc light intensity detected by an arc light transmitter (20) and a temperature measured by an infrared temperature measuring transmitter (22), such that the switching-closing performance of switching on and switching off a medium-voltage power grid is greatly improved, switching-closing time points can be accurately controlled, and “flexible” switching-closing is achieved.

Abstract: A soft-collision electromagnetic driving mechanism comprises a movable shaft driven by an electromagnetic mechanism, wherein the movable shaft is fixed to a movable iron core, an upper part of the movable shaft is connected to a movable damping mechanism, the movable damping mechanism comprises a first cylinder, the first cylinder has a movable damping piston therein, the movable damping piston is formed by a damping piston head and damping piston rods disposed at two sides of the damping piston head, first and second sealing chambers are at the two sides of the damping piston head respectively, a damping liquid is filled in the first and second sealing chambers, and a two-way discharge channel is arranged between the first and second sealing chambers. The driving mechanism is a permanent magnetic linear driving mechanism having a simple structure, a strong driving force and smooth contact, which can be used to drive electrical switches or devices requiring smooth contact, strong driving force and high speed.

Abstract: A soft-collision electromagnetic driving mechanism comprises a movable shaft driven by an electromagnetic mechanism, wherein the movable shaft is fixed to a movable iron core, an upper part of the movable shaft is connected to a movable damping mechanism, the movable damping mechanism comprises a first cylinder, the first cylinder has a movable damping piston therein, the movable damping piston is formed by a damping piston head and damping piston rods disposed at two sides of the damping piston head, first and second sealing chambers are at the two sides of the damping piston head respectively, a damping liquid is filled in the first and second sealing chambers, and a two-way discharge channel is arranged between the first and second sealing chambers. The driving mechanism is a permanent magnetic linear driving mechanism having a simple structure, a strong driving force and smooth contact, which can be used to drive electrical switches or devices requiring smooth contact, strong driving force and high speed.