WO2013010378A1

WO2013010378A1 - High-voltage switch permanent magnet operating mechanism with adjustable attractive force characteristic

Info

Publication number: WO2013010378A1
Application number: PCT/CN2012/000950
Authority: WO
Inventors: 王帮田; 张�杰; 纪江辉; 王小丽; 陈景桥
Original assignee: 许继集团有限公司; 国家电网公司
Priority date: 2011-07-15
Filing date: 2012-07-12
Publication date: 2013-01-24
Also published as: CN102254716A

Abstract

A high-voltage switch permanent magnet operating mechanism with an adjustable attractive force characteristic comprises a casing (6), a magnetic shield (3), a coil (2) and a permanent magnet (4). The magnetic shield and the coil are disposed inside the casing. The permanent magnet is disposed between the magnetic shield and the casing. A magnetic yoke (1) and an end cover (5) are installed at the upper end and the lower end of the casing respectively. An irregular movable iron core (7) is disposed inside the casing. A groove or boss is disposed on the outer wall of the irregular movable iron core. The distribution of a magnetic field is changed by changing the shape of the outer wall of the irregular movable iron core, so as to change the attractive force characteristic. The structure is exquisite, practical, easily adjustable and controllable, is applicable to different characteristic demands of high-voltage switches, is convenient to make design optimization, and has desirable universality.

Description

High-voltage switch permanent magnet operating mechanism capable of adjusting suction characteristics

[0001] The present invention belongs to a high-power switchgear of a power system, and particularly relates to a high-voltage switch permanent magnet operating mechanism capable of adjusting suction characteristics.

Background technique

[0002J At present, the known high-voltage switch permanent magnet operating mechanism changes the suction characteristics by changing the cross-sectional area of the movable iron core or changing the shape of the end face of the movable iron core. These two methods have the following disadvantages: 1. Change by changing the cross-sectional area of the moving iron core The method of suction characteristic, which will cause difficulty in adjusting the closing holding force and the closing speed; 2. The method of changing the suction characteristic by changing the shape of the end face of the moving iron core, which cannot make the suction characteristic of a certain stroke in the closing process Flexible control.

[0003] The above-described deficiencies in the conventional structure result in inconvenient adjustment of the suction characteristics and difficulty in control.

Summary of the invention

[0004] It is an object of the present invention to provide a high voltage switch permanent magnet operating mechanism that is simple in structure and flexible in controlling suction characteristics.

[00051] In order to achieve the above object, the technical solution of the present invention is: a high-voltage switch permanent magnet operating mechanism capable of adjusting suction characteristics, comprising a barrel, a magnetic sleeve, a coil and a permanent magnet, wherein the magnetic sleeve and the coil are disposed in the barrel, The permanent magnet is disposed between the magnetic sleeve and the barrel, and the upper and lower ends of the barrel are respectively mounted with a yoke and an end cover, and the barrel is provided with a special-shaped moving iron core.

The profiled moving iron core of I0006J is a cylindrical cylinder, and a groove is formed on the outer wall of the cylinder.

[0007] The profiled moving iron core is a cylindrical cylinder, and a boss is provided on the outer wall of the cylinder.

[00081 The number of the grooves is at least one.

10009] The number of the bosses is at least one.

[0010] Compared with the prior art, the advantages of the present invention are: The invention comprises a barrel, a magnetic sleeve, a coil and a permanent magnet, the magnetic sleeve and the coil are arranged in the barrel, and the permanent magnet is arranged in the magnetic sleeve and the barrel Between the upper and lower ends of the barrel, a yoke and an end cover are respectively arranged, and a special-shaped movable iron core is arranged in the barrel, and a groove or a boss is arranged on the outer wall of the shaped movable iron core, and the shape of the outer wall of the shaped movable iron core is changed. To change the distribution of the magnetic field, so as to achieve the purpose of changing the suction characteristics, when the shaped moving iron core moves to a certain stroke, the magnetic field distribution is changed by the groove or the boss to change the suction characteristic of the shaped moving iron core, and the structure is delicate. Practical, easy to adjust, easy to control, can adapt to the characteristics of different high-voltage switches, easy to optimize the design, but also has good versatility. ' DRAWINGS

1 is a schematic structural view of Embodiment 1 of the present invention;

2 is a schematic structural view of an embodiment of a moving iron core in Embodiment 1;

3 is a schematic structural view of a second embodiment of a core in Embodiment 1;

4 is a schematic structural view of a third embodiment of a moving iron core in Embodiment 1;

5 is a schematic structural view of a fourth embodiment of a middle moving iron core according to Embodiment 1;

Fig. 6 is a schematic view showing the structure of a second embodiment of the present invention.

detailed description

Embodiment 1 , a permanent magnet operating mechanism with adjustable suction characteristics as shown in FIG. 1 , comprising a yoke 1 , a coil 2 , a magnetic sleeve 3 , a permanent magnet 4 , an end cover 5 , a barrel , and a moving iron core 7, axis 8. The yoke 1 is mounted on the front end portion of the barrel 6, and the end cover 5 is mounted on the other end of the barrel. The coil 2, the magnetic sleeve 3, and the permanent magnet 4 are all inside the barrel, and the permanent magnet 4 is disposed in the barrel 6 and Between the magnetic sleeves 3, the movable iron core 7 and the shaft 8 are fixedly connected to each other in the barrel 6.

As shown in Fig. 2, Fig. 3, Fig. 4, and Fig. 5, grooves are formed in the movable iron core, and the position, size, shape, and number of the grooves are related to the required suction characteristics. When the moving iron core moves at a certain stroke, the magnetic field distribution is changed to change the suction characteristics of the moving iron core.

Example 2

A permanent magnet operating mechanism with adjustable suction characteristics as shown in Fig. 1, which includes the main mechanism, has been described in the embodiment 1, and will not be described again.

As shown in FIG. 6, the boss is opened on the movable iron core, wherein the position, size, shape and number of the bosses are related to the required suction characteristics. When the moving iron core moves at a certain stroke, the magnetic field distribution is changed to change the movement. The suction characteristics of the moving iron core.

Claims

Claim

1. A high-voltage switch permanent magnet operating mechanism capable of adjusting suction characteristics, comprising a barrel, a magnetic sleeve, a coil and a permanent magnet, wherein the magnetic sleeve and the coil are disposed in the barrel, and the magnet is disposed between the magnetic sleeve and the barrel, the machine A yoke and an end cover are respectively mounted on the upper and lower ends of the cylinder, wherein the barrel is provided with a profiled moving iron core.

The high-pressure switch permanent magnet operating mechanism with adjustable suction characteristics according to claim 1, wherein the profiled moving iron core is a cylindrical cylinder, and a groove is formed on the outer wall of the cylinder.

3. The high-pressure switch permanent magnet operating mechanism with adjustable suction characteristics according to claim 1, wherein the profiled iron core is a cylindrical cylinder, and a boss is provided on the outer wall of the cylinder.

4. The high-pressure switch permanent magnet operating mechanism with adjustable suction characteristics according to claim 2, wherein the number of the grooves is at least one.

The high-voltage switch permanent magnet operating mechanism with adjustable suction characteristics according to claim 3, wherein the number of the bosses is at least one.