CN217086460U

CN217086460U - High-voltage AC vacuum contactor special for magnetic suspension

Info

Publication number: CN217086460U
Application number: CN202123179552.8U
Authority: CN
Inventors: 任浩
Original assignee: Wuxi Haibang Mechanics And Electric Appliance Manufacturing Co ltd
Current assignee: Wuxi Haibang Mechanics And Electric Appliance Manufacturing Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-29
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses a special high-pressure AC vacuum contactor of magnetic suspension belongs to high-tension electricity AC vacuum contactor technical field. Wherein, power supply module installs and holds the storehouse bottom and control coil circular telegram, and the bearing frame is fixed and is holding the storehouse top, and the transmission connecting lever includes first connecting rod and second connecting rod, and the one end of first connecting rod and second connecting rod is installed respectively in the bearing frame, and both are 90 degrees contacts, and the side of the other end of second connecting rod is equipped with the separating brake spring, and the other end setting of separating brake spring is on static armature, and the side of static armature is equipped with the coil. The utility model discloses an adopt quiet armature, increased closing spring's pressure, ensure the reliability of separating brake, through adopting radial ball bearing, the card that produces when reducing the contact spring inching hinders, can put through and break off to electric arc at suitable breaking point to can satisfy the requirement of suspension train system to vacuum contactor.

Description

Special high-voltage alternating current vacuum contactor of magnetic suspension

Technical Field

The utility model belongs to the technical field of high-tension electricity AC vacuum contactor, concretely relates to special high-pressure AC vacuum contactor of magnetic suspension.

Background

The vacuum contactor utilizes a vacuum arc-extinguishing chamber to extinguish arc, is used for frequently switching on and switching off normal working current, and is usually used for remotely switching on and switching off a 6KV and 380V alternating-current motor which is frequently started and stopped at medium and high voltage

Most of high-voltage alternating current vacuum contactors on the market at present are 24KV/630A, while a magnetic suspension train system needs the 24KV high-voltage alternating current vacuum contactor, the current grade is 1250A, the frequency is 3HZ to 100HZ and can be continuously adjusted, aiming at the characteristic, when the alternating current zero-crossing point is not reached, an electric arc needs to be blown off through magnetic blowing, the length of the electric arc depends on the size of the current, and therefore a proper breaking point is very critical.

Therefore, how to realize the switching on and off of the arc at the proper switching-off point is a problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model provides a special high-pressure AC vacuum contactor of magnetic suspension to solve the above-mentioned problem that prior art exists.

The technical scheme is as follows: a high-voltage alternating-current vacuum contactor special for magnetic suspension comprises a base and a plurality of insulating frames arranged on the base, wherein a containing cavity is formed in the base, a power supply assembly, a static armature, a separating brake spring, a transmission connecting lever and a bearing seat are arranged in the containing cavity, the power supply assembly is arranged at the bottom of the containing cavity and controls a coil to be electrified, the bearing seat is fixed above the containing cavity, the transmission connecting lever comprises a first connecting rod and a second connecting rod, one end of the first connecting rod and one end of the second connecting rod are respectively arranged in the bearing seat and are in 90-degree contact with each other, the separating brake spring is arranged on the side face of the other end of the second connecting rod, the other end of the separating brake spring is arranged on the static armature, and the coil is arranged on the side face of the static armature;

the vacuum switch tube is installed on the insulating frame, an insulator is arranged below the vacuum switch tube, an insulating rod is arranged below the insulator, contact springs are sleeved at two ends of the insulating rod, and one end of the insulating rod is connected with the first connecting rod.

In a further embodiment, the vacuum interrupter housing is corrugated and made of high strength SMC molded plastic, increasing the creepage and thus the insulation distance.

In a further embodiment, the static conductive bar is installed above the vacuum switch tube through a bolt, and the dynamic conductive bar is installed below the vacuum switch tube through a flexible wire, so that the safety clear distance is increased, the flow area of the conductive bar is increased, and the temperature rise of the conductive bar is reduced.

In a further embodiment, a bearing is arranged in the bearing seat, the bearing is a radial ball bearing and can do inclined motion within a certain angle range, and the sliding surface is spherical motion, so that the first connecting rod and the second connecting rod do not have blocking during motion, and the bearing has better bouncing performance, and the optimal breaking point cannot be delayed.

In a further embodiment, a connecting rod is embedded in the insulator, the connecting rod is connected with the lower end of the vacuum switch tube, a groove is formed in the lower end of the insulator, one end of the insulating rod is embedded in the groove, and the other end of the insulating rod penetrates through the upper surface of the base and is vertically connected with the first connecting rod;

when the coil is not electrified, one end of the insulating rod embedded in the groove is not in contact with the inner surface of the groove.

In a further embodiment, a locking assembly is further arranged in the accommodating bin, and a plurality of binding posts are arranged on the side wall of the base.

Has the advantages that: the utility model relates to a special high-voltage AC vacuum contactor for magnetic suspension, in order to enable the current grade to reach 1250A and the frequency to be continuously adjustable from 3HZ to 100HZ, in order to realize the connection and disconnection of the electric arc at a proper disconnection point, an accommodating cavity is further arranged in the base of the device, the power supply component drives the coil to be electrified in the accommodating cavity, so that the static armature overcomes the resistance, the opening spring acts as a moving contact, thereby the transmission crank arm drives the contact spring to do the up-and-down switching action, the electric arc is generated in the vacuum switch tube, because of the adoption of the static armature, the pressure of a closing spring is increased, the reliability of opening is ensured, and in addition, because of the adoption of the radial ball bearing, the blocking generated when the contact spring clicks is reduced, the electric arc can be switched on and off at a proper switching-on/off point, so that the requirement of the first vacuum contactor of the suspension magnetic train system can be met.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of the present invention.

The figures are numbered: 1. a base; 2. an insulating frame; 3. a vacuum switching tube; 4. an insulator; 5. a contact spring; 6. a latch assembly; 7. a movable conducting bar; 8. a first link; 9. a power supply component; 10. a coil; 11. a brake separating spring; 12. a second link; 13. a bearing seat; 14. a static conducting bar; 15. a binding post; 16. an insulating rod; 17. and a static armature.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

As shown in fig. 1 to 2, a high voltage ac vacuum contactor for magnetic suspension is hereinafter referred to as "the apparatus". The device comprises a base 1, a plurality of insulating frames 2, a vacuum switch tube 3, an insulator 4, an insulating rod 16, a contact spring 5, a first connecting rod 8, a second connecting rod 12, a bearing seat 13, a separating brake spring 11, a coil 10, a power supply assembly 9, a movable conducting bar 7, a static conducting bar 14, a locking assembly 6, a static armature 17 and a binding post 15.

Insulating frame 2 passes through the bolt fastening in base 1 top, vacuum switch tube 3 installs on insulating frame 2, vacuum switch tube 3's shell is the corrugate, and adopts high strength SMC mould pressing plastics, static electricity leads 14 to pass through the bolt fastening in vacuum switch tube 3's top, move and lead the below of arranging 7 through the flexible conductor connection at vacuum switch tube 3, the connecting rod is embedded to insulator 4, and the connecting rod is connected with vacuum switch tube 3's lower extreme, and insulator 4's lower extreme sets up flutedly, the one end embedding of insulator spindle 16 in the recess, the other end runs through base 1 upper surface and with 8 vertical connections of first connecting rod, contact spring 5 cup joints the both ends of insulator spindle 16.

An accommodating cavity is arranged in the base 1, a power supply assembly 9, a static armature 17, a separating brake spring 11, a transmission crank arm and a bearing seat 13 are arranged in the accommodating cavity, the power supply assembly 9 is arranged at the bottom of the accommodating cabin and controls a coil 10 to be electrified, the bearing seat 13 is fixed above the containing bin, the transmission crank arm comprises a first connecting rod 8 and a second connecting rod 12, one end of the first connecting rod 8 and one end of the second connecting rod 12 are respectively arranged in a bearing seat 13, a bearing is arranged in the bearing seat 13, the bearing is a radial ball bearing, the first connecting rod 8 and the second connecting rod 12 are contacted with each other at 90 degrees, the side surface of the other end of the second connecting rod 12 is provided with a brake-separating spring 11, the other end of the opening spring 11 is arranged on the static armature 17, a coil 10 is arranged on the side face of the static armature 17, a locking component 6 is further arranged in the containing bin, and a plurality of binding posts 15 are arranged on the side wall of the base 1.

As a preferable scheme, two radial bearings perpendicular to each other are installed in the bearing seat 13, wherein a first connecting rod 8 is installed in one radial bearing, and a second connecting rod 12 is installed in the other radial bearing, so that jamming cannot be generated when the first connecting rod 8 drives the second connecting rod 12 to perform a point connection action.

The specific working process is as follows: after the power supply module 9 works, the coil 10 is electrified, so that the static armature 17 overcomes self resistance, the opening spring 11 is attracted, the first connecting rod 8 drives the second connecting rod 12 to inching upwards or downwards, the contact spring 5 is contacted with the groove in the insulating rod 16, the connecting rod in the insulating rod 16 is connected with the lower end of the vacuum switch tube 3, and electric arcs are generated in the vacuum switch tube 3.

As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a special high-pressure AC vacuum contactor of magnetic suspension, includes that base, a plurality of setting are in insulating frame on the base, its characterized in that: the base is internally provided with a containing cavity, the containing cavity is internally provided with a power supply assembly, a static armature, a brake separating spring, a transmission crank arm and a bearing seat, the power supply assembly is arranged at the bottom of the containing bin and controls the coil to be electrified, the bearing seat is fixed above the containing bin, the transmission crank arm comprises a first connecting rod and a second connecting rod, one end of the first connecting rod and one end of the second connecting rod are respectively arranged in the bearing seat, the first connecting rod and the second connecting rod are in 90-degree contact, the brake separating spring is arranged on the side surface of the other end of the second connecting rod, the other end of the brake separating spring is arranged on the static armature, and the side surface of the static armature is provided with the coil;

2. The magnetic suspension special high-voltage alternating current vacuum contactor as claimed in claim 1, characterized in that: the shell of the vacuum switch tube is corrugated, and high-strength SMC (sheet molding compound) molding plastic is adopted.

3. The magnetic suspension special high-voltage alternating current vacuum contactor as claimed in claim 1, characterized in that: the upper part of the vacuum switch tube is provided with a static conductive bar through a bolt, and the lower part of the vacuum switch tube is provided with a dynamic conductive bar through a flexible wire.

4. The magnetic suspension special high-voltage alternating current vacuum contactor as claimed in claim 1, characterized in that: a bearing is arranged in the bearing seat, and the bearing is a radial ball bearing.

5. The magnetic suspension special high-voltage alternating current vacuum contactor as claimed in claim 1, characterized in that: a connecting rod is embedded in the insulator and connected with the lower end of the vacuum switch tube, a groove is formed in the lower end of the insulator, one end of the insulating rod is embedded in the groove, and the other end of the insulating rod penetrates through the upper surface of the base and is vertically connected with the first connecting rod;

6. The magnetic suspension special high-voltage alternating current vacuum contactor as claimed in claim 1, characterized in that: the storage bin is internally provided with a lock catch assembly, and the side wall of the base is provided with a plurality of binding posts.