Novel magnetic quenching structure

Abstract

The utility model provides a novel magnetic quenching structure, which comprises a housing, a yoke is arranged in the housing, the surface of the yoke is connected with an iron core, and a coil is wound on the surface of the iron core; a movable contact spring is arranged on one side of the surface of the yoke, a movable contact is arranged on one side of the movable contact spring, an armature is arranged below the movable contact spring, and the armature is connected with one end of the iron core; a lower static spring is arranged on one side of the yoke, a static contact is arranged on the surface of the lower static spring, and a stopper is arranged above the static contact; a bottom plate is arranged on the top of the yoke. The novel magnetic quenching structure provided by the utility model adopts an overall independent structure, is small in size, enables electric arcs generated when small and ultra-small relays control high-voltage load actions to be quickly damaged, reduces the damage of the electric arcs to contacts and the whole relay, improves the contact reliability of the whole system, and improves the reliability of the system. And the service life is greatly prolonged, and the failure rate is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of arc extinguishing, in particular to a novel magnetic blowing arc extinguishing structure. Background Art

[0002] Today, arc extinguishing usually adopts the following three methods:

[0003] Air arc extinguishing: This is one of the most commonly used and traditional arc extinguishing technologies. It uses high-speed airflow to blow out the arc. The strong momentum quickly weakens and diffuses the arc, thereby achieving the effect of arc extinguishing. Air magnetic blowing arc extinguishing technology is widely used in low-voltage and medium-voltage switchgear.

[0004] SF6 arc extinguishing: Sulfurized gas (SF6) is an insulating and arc extinguishing medium with high dielectric strength and arc extinguishing performance. SF6 magnetic arc extinguishing technology uses high-speed airflow or spraying SF6 gas to blow out the arc, thereby achieving the purpose of arc extinguishing. This technology is widely used in high-voltage and ultra-high-voltage switchgear;

[0005] Magnetic field assisted arc extinguishing: This technology uses the effect of magnetic field to enhance the arc extinguishing effect. By increasing the magnetic field strength and changing the magnetic field distribution, it can effectively weaken and diffuse the arc to achieve efficient arc extinguishing. Magnetic field assisted magnetic blowing arc extinguishing technology is usually used in high voltage and ultra-high voltage switchgear.

[0006] In the design and development of civil relays, since they usually control some large current and high voltage loads, the internal contacts of the relays are easily burned and malfunction.

[0007] Therefore, it is necessary to provide a new type of magnetic blow-out arc structure to solve the above technical problems. Utility Model Content

[0008] The utility model provides a novel magnetic blow-out arc extinguishing structure, which solves the problem that in the design and development of civil relays, the internal contacts of the relays are easily burned and malfunctions occur because some large current and high voltage loads are usually controlled.

[0009] In order to solve the above technical problems, the utility model provides a novel magnetic blow-out arc structure, comprising:

[0010] A cover shell, wherein a yoke is arranged inside the cover shell, an iron core is connected to the surface of the yoke, and a coil is wound around the surface of the iron core;

[0011] A moving spring is arranged on one side of the yoke surface, a moving contact is arranged on one side of the moving spring, an armature is arranged below the moving spring, and the armature is connected to one end of the iron core;

[0012] A lower static spring is arranged on one side of the yoke, a static contact is arranged on the surface of the lower static spring and below the moving contact, and a stopper is arranged above the moving contact;

[0013] A bottom plate is arranged on the top of the yoke.

[0014] Preferably, baffles are provided on both sides of the yoke.

[0015] Preferably, a permanent magnet is embedded on one side of the interior of the cover shell.

[0016] Preferably, a disassembly assembly is provided on the surface of the cover shell, and the disassembly assembly includes a disassembly plate, and both sides of the disassembly plate are connected with mounting blocks.

[0017] Preferably, a mounting groove matched with the mounting block is provided on the surface of the cover shell.

[0018] Preferably, a rotating seat is provided on the surface of the cover shell and on a side opposite to the mounting groove, and one side of the rotating seat is connected to a limiting plate.

[0019] Preferably, a fixing piece is provided between the limiting plate and the disassembly plate.

[0020] Compared with the related art, the novel magnetic blow-out arc extinguishing structure provided by the utility model has the following beneficial effects:

[0021] The utility model provides a novel magnetic blow-out arc extinguishing structure, which uses a cover shell, a coil, a baffle, a yoke, an iron core, a lower static spring, a static contact, a moving spring sheet, a moving contact, an armature, a stopper and a permanent magnet to adopt an integral independent structure, and has a small volume, so that the arc generated by a small or ultra-small relay when controlling a high-voltage load action is quickly destroyed, and the damage of the arc to the contact and the entire relay is reduced, so that the contact reliability of the entire system is improved, and the service life is greatly extended and the failure rate is greatly reduced;

[0022] The components are installed inside a fixed and closed cavity. In actual assembly, the permanent magnet can be installed as an independent device, which can fully reduce the design requirements and assembly difficulty of high-power electromagnetic relays. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A structural schematic diagram of a first embodiment of a novel magnetic blow-out arc extinguishing structure provided by the utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the first-person perspective stereoscopic structure of the interior of the device shown;

[0025] Figure 3 for Figure 1A schematic diagram of a second perspective stereoscopic structure of the interior of the device shown;

[0026] Figure 4 for Figure 1 A schematic diagram of the third-person perspective structure of the interior of the device shown;

[0027] Figure 5 for Figure 1 A schematic diagram of the fourth perspective stereoscopic structure of the interior of the device shown;

[0028] Figure 6 for Figure 1 A schematic diagram of the three-dimensional structure of the lower static spring shown;

[0029] Figure 7 A structural schematic diagram of a second embodiment of a novel magnetic blow-out arc extinguishing structure provided by the utility model;

[0030] Figure 8 for Figure 7 An enlarged schematic diagram of part A is shown.

[0031] Numbers in the figure: 1, base plate, 2, cover shell, 5, stopper, 7, permanent magnet, 8, coil, 9, baffle, 10, yoke, 11, iron core, 12, lower static spring, 13, static contact, 14, moving spring sheet, 15, moving contact, 16, armature, 18, disassembly assembly, 181, disassembly plate, 182, mounting block, 183, mounting groove, 184, rotating seat, 185, limit plate, 186, fixing part. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0033] First embodiment

[0034] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 ,in, Figure 1 A structural schematic diagram of a first embodiment of a novel magnetic blow-out arc extinguishing structure provided by the utility model; Figure 2 for Figure 1 A schematic diagram of the first-person perspective stereoscopic structure of the interior of the device shown; Figure 3 for Figure 1 A schematic diagram of a second perspective stereoscopic structure of the interior of the device shown; Figure 4 for Figure 1 A schematic diagram of the third-person perspective structure of the interior of the device shown;

[0035] Figure 5 for Figure 1A schematic diagram of the fourth perspective stereoscopic structure of the interior of the device shown; Figure 6 for Figure 1 A novel magnetic blow-out arc extinguishing structure includes:

[0036] A housing 2, wherein a yoke 10 is disposed inside the housing 2, an iron core 11 is connected to the surface of the yoke 10, and a coil 8 is wound around the surface of the iron core 11;

[0037] A moving spring 14 is disposed on one side of the surface of the yoke 10, a moving contact 15 is disposed on one side of the moving spring 14, an armature 16 is disposed below the moving spring 14, and the armature 16 is connected to one end of the iron core 11;

[0038] A lower static spring 12 is disposed on one side of the yoke 10, a static contact 13 is disposed on the surface of the lower static spring 12 and below the moving contact 15, and a stopper 5 is disposed above the moving contact 15;

[0039] A bottom plate 1 is disposed on the top of the yoke 10 .

[0040] Baffles 9 are provided on both sides of the yoke 10 .

[0041] A permanent magnet 7 is embedded on one side of the interior of the cover shell 2 .

[0042] The electromagnetic system consists of a coil 8, a baffle 9, a yoke 10 and an iron core 11; the static spring assembly consists of a lower static spring 12 and a static contact 13; the dynamic spring assembly consists of a dynamic spring sheet 14, a dynamic contact 15 and an armature 16; wherein the permanent magnet 7 is embedded and installed inside the cover 2 and fits against the right side of the base plate 1.

[0043] For the first time, an attempt was made to add permanent magnets to the design of small and ultra-small relays so that the arc generated when controlling high-power loads can disappear quickly, thus protecting the relay contacts and even the entire relay system.

[0044] Compared with the related art, the novel magnetic blow-out arc extinguishing structure provided by the utility model has the following beneficial effects:

[0045] The utility model provides a novel magnetic blow-out arc extinguishing structure, which uses a cover shell 2, a coil 8, a baffle 9, a yoke 10, an iron core 11, a lower static spring 12, a static contact 13, a moving spring piece 14, a moving contact 15, an armature 16, a stopper 5 and a permanent magnet 7 to adopt an integral independent structure, and has a small volume, so that the arc generated by the small and ultra-small relays when controlling the high voltage load action is quickly destroyed, and the damage of the arc to the contacts and the entire relay is reduced, so that the contact reliability of the entire system is improved, and the service life is greatly extended and the failure rate is greatly reduced;

[0046] The components are installed inside a fixed and closed cavity. In actual assembly, the permanent magnet can be installed as an independent device, which can fully reduce the design requirements and assembly difficulty of high-power electromagnetic relays.

[0047] Second embodiment

[0048] Please refer to Figure 7 and Figure 8 Based on the novel magnetic blowout arc extinguishing structure provided by the first embodiment of the present application, the second embodiment of the present application proposes another novel magnetic blowout arc extinguishing structure. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0049] Specifically, the difference of the new magnetic arc extinguishing structure provided in the second embodiment of the present application is that, in a new magnetic arc extinguishing structure, a disassembly assembly 18 is provided on the surface of the cover shell 2, and the disassembly assembly 18 includes a disassembly plate 181, and both sides of the disassembly plate 181 are connected to mounting blocks 182.

[0050] The surface of the housing 2 is provided with a mounting groove 183 matched with the mounting block 182 .

[0051] The use of the mounting block 182 and the mounting groove 183 facilitates positioning when the disassembly plate 181 and the cover shell 2 are installed. The fixing member 186 is a magnet with opposite charges attracting each other.

[0052] A rotating seat 184 is disposed on the surface of the housing 2 and on a side opposite to the mounting groove 183 , and one side of the rotating seat 184 is connected to a limiting plate 185 .

[0053] A fixing member 186 is disposed between the limiting plate 185 and the disassembly plate 181 .

[0054] The working principle of a novel magnetic blow-out arc extinguishing structure provided by the utility model is as follows:

[0055] During use, when a component inside the device fails and needs to be repaired, first, the limit plate 185 is rotated to separate from the disassembly plate 181 through the rotating seat 184. After the limit plate 185 is separated from the disassembly plate 181, the disassembly plate 181 is separated from the cover shell 2 by pulling. When the disassembly plate 181 is separated from the cover shell 2, the mounting blocks 182 on both sides are separated from the mounting grooves 183 on the surface of the cover shell 2.

[0056] Compared with the related art, the novel magnetic blow-out arc extinguishing structure provided by the utility model has the following beneficial effects:

[0057] The utility model provides a novel magnetic blowout arc extinguishing structure. A disassembly assembly 18 is arranged on the surface of a cover shell 2. When a component inside the cover shell 2 fails, the component can be disassembled from the side for detection.

[0058] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A new type of magnetic blow-out arc structure, characterized in that: include: A cover shell, wherein a yoke is arranged inside the cover shell, an iron core is connected to the surface of the yoke, and a coil is wound around the surface of the iron core; A moving spring is arranged on one side of the yoke surface, a moving contact is arranged on one side of the moving spring, an armature is arranged below the moving spring, and the armature is connected to one end of the iron core; A lower static spring is arranged on one side of the yoke, a static contact is arranged on the surface of the lower static spring and below the moving contact, and a stopper is arranged above the moving contact; A bottom plate is arranged on the top of the yoke.

2. The novel magnetic blow-out arc extinguishing structure according to claim 1 is characterized in that: Baffles are arranged on both sides of the yoke.

3. The novel magnetic blow-out arc extinguishing structure according to claim 1 is characterized in that: One side of the interior of the cover shell is inlaid with a permanent magnet.

4. The novel magnetic blow-out arc extinguishing structure according to claim 1 is characterized in that: A disassembly assembly is arranged on the surface of the cover shell, and the disassembly assembly comprises a disassembly plate, and both sides of the disassembly plate are connected with mounting blocks.

5. The novel magnetic blow-out arc extinguishing structure according to claim 4 is characterized in that: The surface of the cover shell is provided with a mounting groove matched with the mounting block.

6. The novel magnetic blow-out arc extinguishing structure according to claim 5 is characterized in that: A rotating seat is arranged on the surface of the cover shell and on a side opposite to the mounting groove, and one side of the rotating seat is connected to a limiting plate.

7. The novel magnetic blow-out arc extinguishing structure according to claim 6 is characterized in that: A fixing piece is arranged between the limiting plate and the disassembly plate.

Images