CN215955180U

CN215955180U - Main contact arc extinguishing mechanism of high-voltage direct-current contactor

Info

Publication number: CN215955180U
Application number: CN202122334338.9U
Authority: CN
Inventors: 汪旭; 邓俊帆
Original assignee: Shenzhen Kaiyuan New Energy Technology Co ltd
Current assignee: Shenzhen Kaiyuan New Energy Technology Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-03-04
Anticipated expiration: 2031-09-26

Abstract

The utility model relates to the technical field of arc extinguishing devices, in particular to a main contact arc extinguishing mechanism of a high-voltage direct-current contactor, which comprises a device shell and a contact mechanism, wherein a placing cavity and a triggering cavity are arranged in the device shell, a spacer is welded between the placing cavity and the triggering cavity, the contact mechanism comprises a pressure head, a pressure rod, a limiting spring, a push rod, a mounting plate, a movable contact plate and a static contact plate, the pressure head, the pressure rod, the push rod and the mounting plate are sequentially welded from top to bottom, the movable contact plate is mounted at the bottom of the mounting plate, the limiting spring is sleeved on the push rod, the limiting spring is arranged between the pressure rod and the spacer, and in the process of contacting the movable contact plate and the static contact plate through the contact mechanism, a magnet block and the mounting plate can be simultaneously pushed to move and a micro high-pressure air pump can be triggered before the movable contact plate and the static contact plate are contacted, so that magnetic blow arc extinguishing can be finished at the highest speed, the method can carry out magnetic blow in advance, thereby ensuring accurate arc extinction.

Description

Main contact arc extinguishing mechanism of high-voltage direct-current contactor

Technical Field

The utility model relates to the technical field of arc extinguishing devices, in particular to a main contact arc extinguishing mechanism of a high-voltage direct-current contactor.

Background

In a contact electric appliance, the process of making and breaking the current by the contact is often accompanied by the generation and extinction of an electric arc. The electric arc is a gas discharge phenomenon, has certain harm to electrical appliances, and the contactor is applied to electric power, power distribution and power utilization occasions. The contactor is the electric apparatus that utilizes the coil to flow through the electric current and produce magnetic field in the industrial electricity on the broad sense, make the contact closed, in order to reach control load, the contactor can produce electric arc often when using, consequently need use arc extinguishing mechanism to carry out the arc extinguishing, the magnetic blow-out arc extinguishing is a arc extinguishing mode commonly used, the opportunity of arc extinguishing deviation appears and can lead to the arc extinguishing effect poor, consequently, the trigger opportunity of control magnetic blow-out device is especially important, but present magnetic blow-out arc extinguishing device has the untimely condition emergence of magnetic blow-out, consequently, need a main contact arc extinguishing mechanism of high voltage direct current contactor now to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a main contact arc extinguishing mechanism of a high-voltage direct-current contactor, which aims to solve the problem of untimely magnetic blow-out in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a main contact arc extinguishing mechanism of a high-voltage direct-current contactor comprises a device shell and a contact mechanism, wherein a placing cavity and a triggering cavity are arranged in the device shell, a spacer is welded between the placing cavity and the triggering cavity, the contact mechanism comprises a pressure head, a pressure rod, a limiting spring, a push rod, a mounting piece, a movable contact piece and a static contact piece, the pressure head, the pressure rod, the push rod and the installation sheet are sequentially welded from top to bottom, the movable contact sheet is installed at the bottom of the installation sheet, the limit spring is sleeved on the push rod and arranged between the pressure lever and the spacer, the top of the placing cavity is provided with a clamping hole, the pressure lever is clamped in the clamping hole, the spacer is provided with a through hole, the push rod is clamped in the through hole, the mounting piece is arranged at the bottom of the separation piece, and magnet structures are arranged on two sides of the top of the inner wall of the trigger cavity.

Preferably, in order to facilitate arc extinction, the magnet structure comprises a limiting piece, an installation block and a magnet block, the limiting piece is welded to the bottoms of the two sides of the spacer, the magnet block is adhered to the bottom of the installation block, and a blocking piece is adhered to the bottom of the magnet block.

Preferably, in order to conveniently control the movement of the magnet block, a track groove is formed in the limiting plate, a connecting rod is welded between the mounting block and the mounting plate, and the connecting rod is clamped in the track groove.

Preferably, for the convenience of triggering miniature high compression pump, installation piece one end bottom both sides all weld has the installation pole, electrode slice one is installed to installation pole bottom, the butt fusion has the fixed block on the inner wall in trigger chamber, be provided with the slow-pressing piece on the fixed block, install electrode slice two on the slow-pressing piece, electrode slice two with electrode slice one is corresponding, miniature high compression pump is installed through the screw in spacer top, be provided with the battery on the device casing, miniature high compression pump pass through the electric wire respectively with electrode slice one with the battery is connected, the battery pass through the electric wire with electrode slice two is connected.

Preferably, in order to ensure that the air pressure in the placing cavity is stable, the partition is provided with an air hole, one end of the miniature high-pressure air pump is arranged in the air hole, and air inlets are formed in two sides of the placing cavity.

Preferably, in order to ensure that the micro high-pressure air pump can be continuously triggered, a groove is formed in the fixing block, and a pressure spring is welded between the pressure-reducing block and the inner wall of the groove.

The utility model has the technical effects and advantages that: the contact mechanism can simultaneously push the magnet block and the mounting plate to move synchronously and trigger the miniature high-pressure air pump before the movable contact plate is contacted with the static contact plate, so that magnetic quenching can be finished at the highest speed.

Drawings

Fig. 1 is a front sectional view of the present invention (when not in use).

FIG. 2 is a front sectional view of the present invention (when the micro high pressure pump is activated).

Fig. 3 is a front sectional view (at arc extinction) of the present invention.

Fig. 4 is a side sectional structure of the present invention.

Fig. 5 is a sectional structure of the fixing block of the present invention.

Fig. 6 is a perspective view of the present invention.

In the figure: 1. a device housing; 2. a placement chamber; 3. a trigger chamber; 4. a spacer; 5. a pressure head; 6. a pressure lever; 7. a limiting spring; 8. a push rod; 9. mounting a sheet; 10. a movable contact piece; 11. a stationary contact piece; 12. a restriction sheet; 13. mounting blocks; 14. a magnet block; 15. a track groove; 16. a connecting rod; 17. mounting a rod; 18. a first electrode plate; 19. a second electrode plate; 20. a fixed block; 21. a pressure-relieving block; 22. a miniature high-pressure air pump; 23. a storage battery; 24. air holes; 25. an air inlet; 26. a pressure spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: including device casing 1 and contact mechanism, be provided with in the device casing 1 and place chamber 2 and trigger chamber 3, it has spacer 4 to place the chamber 2 and trigger between the chamber 3 welding, contact mechanism includes pressure head 5, depression bar 6, spacing spring 7, push rod 8, installation piece 9, move contact piece 10 and quiet contact piece 11, pressure head 5, depression bar 6, push rod 8 and installation piece 9 from top to bottom in proper order the butt fusion, it installs in installation piece 9 bottom to move contact piece 10, spacing spring 7 cover is established on push rod 8, spacing spring 7 sets up between depression bar 6 and spacer 4, it is provided with the card hole to place 2 tops in chamber, 6 cards of depression bar are established at the card downthehole, be provided with the through-hole on spacer 4, 8 cards of push rod are established in the through-hole, installation piece 9 sets up in spacer 4 bottoms.

As a technical optimization scheme of the utility model, both sides of the top of the inner wall of the trigger cavity 3 are provided with magnet structures, each magnet structure comprises a limiting piece 12, a mounting block 13 and a magnet block 14, the limiting pieces 12 are welded at the bottoms of both sides of a separation piece 4, the magnet block 14 is adhered at the bottom of the mounting block 13, a blocking piece is adhered at the bottom of the magnet block 14, a rail groove 15 is arranged on the mounting block 9, a connecting rod 16 is welded between the mounting block 13 and the mounting block 9, the connecting rod 16 is clamped in the rail groove 15, both sides of the bottom of one end of the mounting block 9 are welded with mounting rods 17, the bottom of the mounting rod 17 is provided with an electrode piece I18, a fixing block 20 is welded on the inner wall of the trigger cavity 3, a buffer block 21 is arranged on the fixing block 20, an electrode piece II 19 is arranged on the buffer block 21, the electrode piece II 19 corresponds to the electrode piece I18, a miniature high-pressure air pump 22 is arranged at the top of the separation piece 4 through screws, a storage battery 23 is arranged on the device shell 1, miniature high pressure air pump 22 passes through the electric wire and is connected with electrode slice one 18 and battery 23 respectively, battery 23 passes through the electric wire and is connected with electrode slice two 19, be provided with gas pocket 24 on the spacer 4, miniature high pressure air pump 22 one end sets up in gas pocket 24, it all is provided with inlet port 25 to place 2 both sides in chamber, be provided with the recess on the fixed block 20, it has compression spring 26 to weld between the inner wall of slow-release piece 21 and recess, will move the in-process of contact piece 10 with the contact of stationary contact piece 11 through contact mechanism, can promote magnet piece 14 and mounting plate 9 synchronous motion simultaneously and trigger miniature high pressure air pump 22 before moving contact piece 10 and the contact of stationary contact piece 11, therefore can accomplish the magnetic blow arc extinguishing at the fastest speed.

When the utility model is used, the pressure head 5 is pressed downwards when the contactor is triggered, therefore, the pressure head 5 can press the limit spring 7 through the pressure rod 6 and move downwards, meanwhile, the push rod 8 can push the mounting piece 9 to move downwards, and the mounting piece 9 can drive the mounting block 13 and the magnet block 14 to move downwards when moving, as shown in figure 2, the first electrode plate 18 can contact with the second electrode plate 19 before the movable contact piece 10 contacts with the static contact piece 11, and a circuit is formed among the first electrode plate 18, the second electrode plate 19, the storage battery 23 and the micro high-pressure air pump 22, so that the micro high-pressure air pump 22 can be triggered, so that high-pressure gas can be blown into the trigger cavity 3, and the movable contact piece 10 can be contacted with the static contact piece 11 when moving downwards, meanwhile, the pressure-relieving block 21 can press the pressure spring 26 to move downwards, and at the moment, the contact can generate electric arc, and arc can be rapidly extinguished under the blowing of the magnet blocks 14 on the two sides and the miniature high-pressure air pump 22.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a main contact arc extinguishing mechanism of high voltage direct current contactor, includes device casing (1) and contact mechanism, its characterized in that: the device is characterized in that a placing cavity (2) and a triggering cavity (3) are arranged in a shell (1), a spacer (4) is welded between the placing cavity (2) and the triggering cavity (3), the contact mechanism comprises a pressure head (5), a pressure rod (6), a limiting spring (7), a push rod (8), an installation sheet (9), a movable contact sheet (10) and a static contact sheet (11), the pressure head (5), the pressure rod (6), the push rod (8) and the installation sheet (9) are sequentially welded from top to bottom, the movable contact sheet (10) is arranged at the bottom of the installation sheet (9), the limiting spring (7) is sleeved on the push rod (8), the limiting spring (7) is arranged between the pressure rod (6) and the spacer (4), a clamping hole is formed in the top of the placing cavity (2), and the pressure rod (6) is clamped in the clamping hole, be provided with the through-hole on spacer (4), push rod (8) card is established in the through-hole, installation piece (9) set up spacer (4) bottom, the inner wall top both sides of triggering chamber (3) all are provided with the magnetite structure.

2. The main contact arc extinguishing mechanism of the high-voltage direct-current contactor according to claim 1, characterized in that: the magnet structure includes restriction piece (12), installation piece (13) and magnet piece (14), restriction piece (12) butt fusion is in spacer (4) both sides bottom, magnet piece (14) are in the bonding installation piece (13) bottom, magnet piece (14) bottom bonding has the separation blade.

3. The main contact arc extinguishing mechanism of the high-voltage direct-current contactor as claimed in claim 2, wherein: be provided with track groove (15) on restriction piece (12), installation piece (13) with installation piece (9) butt fusion has connecting rod (16), connecting rod (16) card is established in track groove (15).

4. The main contact arc extinguishing mechanism of the high-voltage direct-current contactor according to claim 1, characterized in that: installation piece (9) one end bottom both sides all weld and have installation pole (17), electrode slice (18) are installed to installation pole (17) bottom, the butt fusion has fixed block (20) on the inner wall in trigger chamber (3), be provided with slowly-pressing piece (21) on fixed block (20), install electrode slice two (19) on slowly-pressing piece (21), electrode slice two (19) with electrode slice (18) are corresponding, miniature high compression pump (22) are installed through the screw in spacer (4) top.

5. The main contact arc extinguishing mechanism of the high-voltage direct-current contactor as claimed in claim 4, wherein: the device is characterized in that a storage battery (23) is arranged on the device shell (1), the miniature high-pressure air pump (22) is respectively connected with the first electrode plate (18) and the storage battery (23) through electric wires, and the storage battery (23) is connected with the second electrode plate (19) through electric wires.

6. The main contact arc extinguishing mechanism of the high-voltage direct-current contactor as claimed in claim 4, wherein: an air hole (24) is formed in the spacer (4), one end of the miniature high-pressure air pump (22) is arranged in the air hole (24), and air inlet holes (25) are formed in two sides of the placing cavity (2).

7. The main contact arc extinguishing mechanism of the high-voltage direct-current contactor as claimed in claim 4, wherein: the fixing block (20) is provided with a groove, and a pressure spring (26) is welded between the pressure-reducing block (21) and the inner wall of the groove.