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CN-224217426-U - Quick single-phase bypass vacuum contactor

CN224217426UCN 224217426 UCN224217426 UCN 224217426UCN-224217426-U

Abstract

The utility model discloses a rapid single-phase bypass vacuum contactor which comprises a permanent magnet driving mechanism, a static end conductive copper bar, an insulating support column, a fixing plate, a vacuum arc-extinguishing chamber, an insulator, a pressure adjusting screw, moment conversion crank arms and hand-separating crank arms, wherein the insulating support column is provided with 4 pieces, 4 pieces of insulating support columns, the fixing plate and a magnetic cylinder upper cover form a fixed frame, the fixing plate above the frame is provided with the static end conductive copper bar and the vacuum arc-extinguishing chamber, and the opening maintenance adopts the design scheme of permanent magnet maintenance. The closing holding is designed by the self-closing force of the vacuum arc extinguishing chamber, four contact springs and auxiliary spring force. According to the utility model, the brake is opened manually, and the manual opening mechanism is manually pushed to the brake opening indication direction during brake opening.

Inventors

  • CHEN BIN
  • ZHANG WEIDONG
  • WANG MING

Assignees

  • 安徽宇腾真空电气有限责任公司

Dates

Publication Date
20260508
Application Date
20250423

Claims (5)

  1. 1. The quick single-phase bypass vacuum contactor comprises a permanent magnet driving mechanism, a static end conductive copper bar (2), an insulating support column (3), a fixing plate (1), a vacuum arc-extinguishing chamber (4), an insulator (10), a spring torque adjusting screw rod (12), a torque conversion crank arm (9) and a hand crank arm (16), and is characterized in that the insulating support column (3) is provided with 4 pieces, the insulating support column (3), the fixing plate (1) and a magnetic cylinder upper end cover (17) form a fixed frame, the fixing plate (1) above the frame is provided with the static end conductive copper bar (2) and the vacuum arc-extinguishing chamber (4), the static end conductive copper bar (2) and the vacuum arc-extinguishing chamber (4) are fixed together through screws and the fixing plate (1) to form a power inlet end, and the insulator (10) and the spring torque adjusting screw rod (12) enable the lower end of the vacuum arc-extinguishing chamber (4) and a magnetic cylinder movable iron core (22) through the torque conversion crank arm (9).
  2. 2. A fast single-phase bypass vacuum contactor according to claim 1, characterized in that the lower end of the vacuum interrupter (4) is provided with a first conductive soft row (5) and a second conductive soft row (8) forming power input and output terminals.
  3. 3. A fast single-phase bypass vacuum contactor according to claim 2, characterized in that four contact springs (7) are arranged under the second conductive soft row (8) for suppressing tilting caused by spring and electric repulsive force of the brake contact.
  4. 4. A fast single phase bypass vacuum contactor according to claim 1, wherein said permanent magnet drive mechanism is a dual coil drive comprising a first coil (20) and a second coil (21), the two sets of coils being redundant to each other.
  5. 5. A fast single-phase bypass vacuum contactor according to claim 1, wherein said permanent magnet driving mechanism further comprises a magnetic cylinder consisting of an upper end cap (17), a lower end cap (24) and a cylinder body, wherein a permanent magnet (18), a plunger (22), a first coil (20) and a second coil (21) are installed inside the cylinder body.

Description

Quick single-phase bypass vacuum contactor Technical Field The utility model relates to the technical field of vacuum contactors, in particular to a rapid single-phase bypass vacuum contactor. Background In the current power system, the high, medium and low voltage contactors and the circuit breakers are all electromagnetic switching-on and switching-off, the speed of electromagnetic switching-on and switching-off is mainly realized by the volume of a coil and a magnet, the vacuum contact is realized by the aid of a vacuum arc-extinguishing chamber, the vacuum arc-extinguishing chamber is composed of self-closing force and a contact pressure spring, the conventional power-used vacuum contactor is designed with the design thought of the contact pressure spring and a switching-off counter-force spring, so that the designed coil and magnet are relatively large in volume, and the moving end of the vacuum arc-extinguishing chamber can be pushed to a switching-on position, and the pushing force is larger than the sum of the self-closing force, the overstroke spring force and the counter-force spring force of the vacuum arc-extinguishing chamber. The larger the coil is, the longer the closing time is, and the size of the inductor is related to the speed of the contact closing time because the electromagnet coil has the inductor. In the process of combining the novel power generation with a power grid or a power distribution conveying mode, the novel power generation needs to be changed into a direct current mode or a alternating current mode, wherein the control method is not separated from the design thought of applying IGBT electronic switch control. The design scheme of the IGBT electronic switch is not used for bypass switching of the electric element. Therefore, the bypass switch contactor is a key original device in the valve, so the requirements on the closing time and reliability of the contactor are extremely high, and the requirements on the product volume are also very strict due to the reasons of occupied area, cost control and the like, so that the conventional contactor cannot be realized. Disclosure of utility model In order to make up for the defects of the prior art, the embodiment of the application provides a rapid single-phase bypass vacuum contactor, which solves the problems in the prior art. In order to solve the technical problems, the utility model provides the following technical scheme: The utility model provides a quick single-phase bypass vacuum contactor, includes permanent magnetism actuating mechanism, quiet end conductive copper bar, insulating support column, fixed plate, vacuum interrupter, insulator, pressure adjusting screw, moment conversion turning arm and hand branch turning arm, insulating support column is provided with 4, 4 insulating support column and fixed plate and magnetic cylinder upper end cover have constituteed a fixed frame, and the fixed plate of frame top is provided with quiet end conductive copper bar and vacuum interrupter, quiet end conductive copper bar and vacuum interrupter pass through the screw and are fixed together with the fixed plate and form the power inlet end, and insulator and spring moment adjusting screw make the lower extreme and the magnetic cylinder movable core linkage of vacuum interrupter through moment conversion turning arm. As a further technical scheme of the utility model: the lower end of the vacuum arc-extinguishing chamber is provided with a first conductive soft row and a second conductive soft row to form a power input end and a power output end. As a further technical scheme of the utility model, four contact springs are arranged below the second conductive soft row and are used for inhibiting the inclination caused by the bouncing of the brake contact and the electric repulsive force. As a further technical scheme of the utility model, the permanent magnet driving mechanism is a double-coil driving mechanism and comprises a first coil and a second coil, wherein the two groups of coils are redundant. The permanent magnet driving mechanism further comprises a magnetic cylinder, wherein the magnetic cylinder is composed of an upper end cover, a lower end cover and a cylinder body, a permanent magnet, a movable iron core, a first coil 20 and a second coil 21 are installed in the cylinder body, the permanent magnet is fixed below the upper end cover, the bottom of the movable iron core and the end face of the lower end cover are in braking and maintaining through attraction of the permanent magnet, one end of a torque conversion crank arm is connected with the movable iron core through a fastening transmission shaft, the other end of the torque conversion crank arm is connected with an insulator through a spring torque adjusting screw to form a lever mechanism, the torque conversion crank arm is installed on a torque conversion crank arm installation seat, the installation seat is fixed on the side face of the magnetic cylinder,