CN218676933U

CN218676933U - Novel three-phase four-wire AC vacuum rapid vacuum contactor

Info

Publication number: CN218676933U
Application number: CN202223337011.8U
Authority: CN
Inventors: 张卫东; 陈斌
Original assignee: ANHUI YUTENG VACUUM ELECTRICAL CO LTD
Current assignee: ANHUI YUTENG VACUUM ELECTRICAL CO LTD
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-03-21
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a novel three-phase four-wire alternating current vacuum fast vacuum contactor, including vacuum interrupter, load conductive copper bar, magnet steel group, manual switching mechanism, stand-by power supply conductive bar, whole frame, power supply conductive bar commonly used, load power supply conductive bar, mechanism connecting lever copper sheathing and forever magnetism actuating mechanism, install at least individual vacuum interrupter on the whole frame. This novel three-phase four-wire alternating current vacuum fast vacuum contactor adopts permanent magnetism to mix design and method that power keeps, closes a floodgate through vacuum interrupter self-closing force and closing spring, supplementary spring force and permanent magnet and keeps during the combined floodgate, and closing coils adopts and carries out the drive of closing a floodgate after reverse circular telegram produces reverse magnetic circuit, the utility model discloses possess electronic and manual combined floodgate mode, adopt to carry out the drive of closing a floodgate after reverse circular telegram produces reverse magnetic circuit through the coil during electronic combined floodgate, manual combined floodgate promotes closing mechanism to the instruction direction of closing a floodgate through manual.

Description

Novel three-phase four-wire AC vacuum rapid vacuum contactor

Technical Field

The utility model relates to a quick vacuum contactor technical field specifically is a novel three-phase four-wire exchanges quick vacuum contactor in vacuum.

Background

At present, a three-phase four-wire contactor in an electric power system uses an air contact switching-on mechanism, the distance between air contacts is increased due to the limitation of the insulation grade of the contact switching-on mechanism, the switching-on time of the contactor is slow, the switching-on capacity and the breaking capacity of the whole contactor by the air switching-on mechanism are relatively poor, and how to improve the service life, reliability and safety of a switching device is always an important subject for research of numerous scientific research institutions at home and abroad. Many sectors require uninterruptible power supplies, such as: base station, IT industry, hospital, telecommunication, bank, motor car, aerospace and military departments. Developed countries abroad, especially the united states and japan, consider dual-power automatic control equipment (ATSE) and its supporting products as a part of the power supply. The PC grade product is preferred in the dual-power emergency power supply system, is more suitable for important load occasions, and has the greatest use value in the minimum power-off time. In contrast, a vacuum arc extinguish chamber is used as a core component of the contactor, so that the distance between contacts of the contactor is reduced, the switching-on time of the contactor is greatly accelerated, the switching-on capacity and the breaking capacity of the whole contactor are greatly improved, and the novel three-phase four-wire alternating current vacuum rapid vacuum contactor is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel three-phase four-wire exchanges quick vacuum contactor in vacuum to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel three-phase four-wire exchanges quick vacuum contactor in vacuum, leads copper bar, magnet steel group, manual switching mechanism, stand-by power supply and leads electrical drainage, whole frame, the power supply that commonly used leads electrical drainage, the load power supply leads electrical drainage, mechanism connecting lever copper sheathing and forever magnetism actuating mechanism, install at least one vacuum interrupter on the whole frame, and vacuum interrupter two liang between lead electrical drainage through the load and connect, one side of magnet steel group is equipped with manual switching mechanism, vacuum interrupter's one end leads electrical drainage, the load power supply leads electrical drainage with the power supply commonly used and is connected, vacuum interrupter's the other end leads electrical drainage with stand-by power supply and is connected.

Furthermore, the mechanism crank arm copper bush is arranged on one side of the integral frame.

Furthermore, a magnetic cylinder in the magnetic steel group is in lever-type connection with the vacuum arc-extinguishing chamber.

Furthermore, the common power supply conducting bar and the load power supply conducting bar form a power supply input end and a power supply output end.

Furthermore, the permanent magnet driving mechanism is driven by double coils, the two groups of coils are redundant, and the double coils comprise a first closing coil and a second closing coil.

The utility model provides a novel three-phase four-wire exchanges quick vacuum contactor in vacuum possesses following beneficial effect: the design idea and method of permanent magnet hybrid force keeping are adopted, the self-closing force of the vacuum arc extinguish chamber and the closing spring, the auxiliary spring force and the permanent magnet are used for keeping closing during closing, the closing coil is driven to close after a reverse magnetic circuit is generated by reverse electrification, the utility model has the advantages that the utility model has the electric and manual closing modes, when the electric closing is performed, the coil adopts reverse power-on to generate a reverse magnetic circuit, then the closing drive is performed, and the manual closing pushes the closing mechanism to the closing indication direction manually;

1. through the conversion of the closing crank arm, the original effect retention force of the magnetic cylinder is amplified through a mechanism lever ratio under the state of the same volume, the weight of a movable part is reduced, and the closing speed of the contactor is accelerated;

2. through the connection of the switching-on crank arm, one group of contactors are always switched on, the other group of contactors are switched off, and the two groups of contactors are in a mutual locking structure;

3. the reliability of the vacuum contactor is improved by the driving mechanism mode of the magnetic cylinder mechanism;

4. the crank arm through switching-on switching always ensures the contact pressure of the vacuum tube, and effectively inhibits the bounce generated by rapid switching-on impact and vibration;

5. through adopting lever type connection between magnetic cylinder and the vacuum interrupter, mutually independent mounting means has avoided horizontal torsion and coefficient of friction that the accessory tolerance leads to, has reduced the produced spring problem of vacuum interrupter contact slope that leads to because of the axiality deviation.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a novel three-phase four-wire ac vacuum rapid vacuum contactor according to the present invention;

in the figure: the device comprises a vacuum arc extinguish chamber 1, a load conductive copper bar 2, a magnetic steel 3, a manual switching mechanism 4, a standby power supply conductive bar 5, an integral frame 6, a common power supply conductive bar 7, a load power supply conductive bar 8 and a mechanism crank arm copper sleeve 9.

Detailed Description

As shown in fig. 1, a novel three-phase four-wire ac vacuum fast vacuum contactor comprises a vacuum arc extinguish chamber 1, a load conductive copper bar 2, a magnetic steel group 3, a manual switching mechanism 4, a standby power conductive bar 5, an integral frame 6, a common power conductive bar 7, a load power conductive bar 8, a mechanism crank copper sleeve 9 and a permanent magnet driving mechanism, wherein at least 8 vacuum arc extinguish chambers 1 are arranged on the integral frame 6, the vacuum arc extinguish chambers 1 are connected with each other through the load conductive copper bar 2, the manual switching mechanism 4 is arranged on one side of the magnetic steel group 3, a magnetic cylinder in the magnetic steel group 3 is in lever type connection with the vacuum arc extinguish chamber 1, and the installation modes are mutually independent, so that the transverse torsion and the friction coefficient caused by the tolerance of accessories are avoided, the bounce problem caused by the inclination of the contact of the vacuum arc extinguish chamber due to the coaxiality deviation is reduced, and under the state of the same volume, the original effect retention of the magnetic cylinder is amplified through a mechanism lever ratio, the weight of a movable part is reduced, the closing speed of the contactor is accelerated, one end of a vacuum arc extinguish chamber 1 is connected with a common power supply conducting bar 7 and a load power supply conducting bar 8, the common power supply conducting bar 7 and the load power supply conducting bar 8 form a power supply input end and a power supply output end, a mechanism connecting lever copper sleeve 9 is arranged on one side of a whole frame 6, a connecting lever converted through closing always ensures the contact pressure of a vacuum tube, the bounce generated by rapid closing impact and vibration is effectively inhibited, the other end of the vacuum arc extinguish chamber 1 is connected with a standby power supply conducting bar 5, a permanent magnetic driving mechanism is driven by double coils, the two groups of coils are mutually redundant, the double coils comprise a first closing coil and a second closing coil, and the permanent magnetic driving mechanism comprises the magnetic cylinder, an upper end cover, a lower end cover, a permanent magnet, a first coil, a second coil, the device comprises a magnetic ring, a closing spring, a spring fixing seat, a spring torque adjusting nut, a closing conversion connecting lever mounting bracket, a movable iron core and an insulating pull rod.

In conclusion, when the novel three-phase four-wire alternating-current vacuum rapid vacuum contactor is used, energy is stored when a self-closing force auxiliary spring of a vacuum arc extinguish chamber 1 is used for manually opening and closing a switch, a power supply is switched on, a switching-on coil in a magnetic cylinder is switched on after excitation, a reverse magnetic circuit is generated by reverse energization of the switching-on coil, the self-closing force of a permanent magnet, the switching-on spring and the auxiliary spring are switched on through the self-closing force of the vacuum arc extinguish chamber 1, meanwhile, a moving contact of the vacuum arc extinguish chamber is pushed to a static contact closing position to complete switching-on through instant release, and at the moment, the switching-on coil cuts off the power supply through an auxiliary contact to complete a switching-on task.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The utility model provides a novel three-phase four-wire exchanges quick vacuum contactor in vacuum, includes vacuum interrupter (1), load conductive copper bar (2), magnet steel group (3), manual switching mechanism (4), stand-by power supply conductive bar (5), whole frame (6), power conductive bar (7) commonly used, load power supply conductive bar (8), mechanism connecting lever copper sheathing (9) and permanent magnetism actuating mechanism, its characterized in that, install 8 at least vacuum interrupter (1) on whole frame (6), and vacuum interrupter (1) is connected through load conductive copper bar (2) two liang, one side of magnet steel group (3) is equipped with manual switching mechanism (4), the one end and the power conductive bar (7) commonly used of vacuum interrupter (1), load power supply conductive bar (8) are connected, the other end and the stand-by power supply of vacuum interrupter (1) are connected.

2. The new vacuum contactor as claimed in claim 1, characterized in that the mechanism crank copper (9) is installed on one side of the integral frame (6).

3. The novel vacuum rapid vacuum contactor according to claim 1, characterized in that the magnetic cylinder in the magnetic steel set (3) is lever-type connected with the vacuum arc-extinguishing chamber (1).

4. A novel three-phase four-wire ac vacuum fast vacuum contactor as claimed in claim 1, characterized in that said common power conducting bar (7) and load power conducting bar (8) form the power input and output terminals.

5. The novel three-phase four-wire AC vacuum fast vacuum contactor as claimed in claim 1, wherein said permanent magnet driving mechanism is a dual coil drive, and two sets of coils are redundant to each other, the dual coil includes a first closing coil and a second closing coil.