CN218183013U - Magnetic blow-out type arc extinguishing assembly, surge protection module and surge protection device - Google Patents

Abstract

The application provides a magnetic blow-out formula arc extinguishing subassembly, surge protection module and surge protector, the magnetic blow-out formula arc extinguishing subassembly includes: two wiring electrodes are arranged at intervals; the arc quenching unit is arranged between the two wiring electrodes and provided with arc quenching cavities, and arc striking structures and magnet structures are arranged in the two arc quenching cavities; the graphite unit is arranged on one side, away from the arc extinguishing unit, of the wiring electrode, and is provided with a through hole which is coaxially arranged with the through hole; the pin electrode is arranged on one side of the graphite unit far away from the wiring electrode; the circuit board is electrically connected between the wiring electrode and the pin electrode; the surge protection module and the surge protector both comprise the magnetic blow type arc extinguishing assembly. This application is under magnetic field and gas expansion's effect, and arc or ionized particle are introduced out the arc chamber, and arc meets the striking structure and cools off and realize the arc extinguishing, under the horizontal condition of the voltage protection that obtains lower, and is better to the protective capacities of back level equipment, and the volume is less.

Description

Magnetic blow-out type arc extinguishing assembly, surge protection module and surge protection device

Technical Field

The application belongs to the technical field of electronic protection devices, and particularly relates to a magnetic blow-out type arc extinguishing assembly, a surge protection module and a surge protection device.

Background

A surge protector, also called a lightning protector, is an electronic device for providing safety protection for various electronic equipment, instruments and meters, communication lines and the like. When the peak current or voltage is suddenly generated in an electric loop or a communication line due to external interference, the surge protector can conduct and shunt in a very short time, so that damage of the surge to other equipment in the loop is avoided.

For example: a chinese patent with publication number CN102005754B discloses a double-layer metal gap type surge protection method, which uses a double-layer metal gap type surge protection structure, and each of the two gaps is larger than 2mm; meanwhile, a double-ignition circuit is adopted for ignition, an electric spark is sequentially generated in two gaps between three discharge electrodes of the lightning protector, namely a conductive channel of two electric sparks is provided, so that the lightning protector starts to discharge under the condition of low rising voltage, the lightning current is released from the metal electrode by utilizing the conductive characteristic of the spark, and a large amount of surge energy is released by the discharge assembly through the main discharge electrode to form low trigger voltage. After the thunder surge passes, the follow current caused by the power supply voltage of the protected line can be rapidly cut off due to the action of arc discharge distances of two gaps each larger than 2mm and the cooperation of the built-in arc extinguishing device, so that high-rated cut-off follow current is formed.

With respect to the related art among the above, the inventors consider that the following drawbacks exist:

the common surge protector is influenced by two contradictory factors of starting voltage and follow current breaking capacity, if follow current is increased, the number of stacked layers needs to be increased or the gap distance needs to be increased, the starting voltage can be increased in the two modes, the protection capacity of the post-stage equipment is poor, the size of the surge protector needs to be large, and the surge protector has the defect of large size.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a magnetic blow-out type arc extinguishing component, surge protection module and surge protection device to solve following technical problem:

if the common surge protection device improves follow current, the starting voltage can be improved, and then the protection capability to the subsequent equipment is not good, and the surge protection device has the defect of large volume.

In order to achieve the above object, in a first aspect, the present application adopts the following technical solutions:

provided is a magnetic blowout type arc extinguishing assembly, including:

the wiring electrodes are arranged at intervals, and are provided with through holes;

the arc extinguishing unit is arranged between the two wiring electrodes, an arc extinguishing cavity communicated with the through hole is formed in the side part, facing the wiring electrodes, of the arc extinguishing unit, arc striking structures and magnet structures which are in mutual contact are arranged in the two arc extinguishing cavities, and gaps are reserved between the arc striking structures and the adjacent wiring electrodes;

the graphite unit is arranged on one side, away from the arc extinguishing unit, of the wiring electrode, and is provided with a through hole which is coaxially arranged with the through hole;

the pin electrode is arranged on one side of the graphite unit far away from the wiring electrode; and the number of the first and second groups,

and the circuit board is electrically connected between the wiring electrode and the pin electrode.

In the technical scheme of an realizable of this application, the unit of putting out an arc still includes the arc extinguishing frame, the arc extinguishing chamber is located the opposite both sides of frame of putting out an arc, be provided with in the arc extinguishing frame and separate two the baffle in arc extinguishing chamber.

In an achievable technical scheme of this application, the structure of striking is electrically conductive metal sheet, the structure of striking includes intermediate lamella and sideboard, the both sides limit of intermediate lamella respectively is provided with polylith interval arrangement the sideboard.

In an achievable technical scheme of this application, the magnet structure is the permanent magnet, the permanent magnet is the bar form, one the striking structure corresponds two the permanent magnet, the permanent magnet with the sideboard laminating.

In an achievable technical solution of the present application, the permanent magnet and the intermediate plate are arranged in parallel, and the arc extinguishing chamber is provided with a caulking groove for embedding the permanent magnet.

In an implementable aspect of the present application, a gap distance between the arc striking structure and the terminal electrode is 2-5 mm.

In a realizable technical scheme of this application, the graphite unit includes graphite board and insulating piece, the graphite board is provided with the polylith, the insulating piece presss from both sides and locates adjacent two between the graphite board, the graphite board with all be provided with on the insulating piece the through-hole.

In an implementable aspect of the present application, the method further includes: the first mounting seat and the second mounting seat are clamped between the two pin electrodes, and the arc quenching unit and the two graphite units are mounted between the first mounting seat and the second mounting seat.

In order to achieve the above object, in a second aspect, the present application adopts the following technical solutions:

there is provided a surge protection module comprising:

a housing, the housing being hollow; and (c) a second step of,

according to the magnetic blow type arc extinguishing assembly, the magnetic blow type arc extinguishing assembly is installed in the shell, and one end of the pin electrode of the magnetic blow type arc extinguishing assembly extends out of the shell.

In order to achieve the above object, in a third aspect, the present application adopts the following technical solutions:

provided is a surge protector device including: according to the surge protection module and the base, the base is provided with a notch for the surge protection module to be inserted, a jack is arranged in the notch, and the end part of the pin electrode extending out penetrates through the jack and is inserted into the base.

In summary, the present application at least includes the following technical effects:

when the surge protector works to generate power frequency follow current, electric arcs can be continuously generated in the graphite unit, high temperature is generated to enable gas to expand and ionized ions, the ionized ions flow towards the arc extinguishing cavity through the through holes of the graphite unit under the action of air pressure, and meanwhile due to the action of the magnetic field force of the magnet, the ionized ions can be adsorbed on the arc striking structure, namely the process of attracting the electric arcs, so that the purpose of cooling the electric arcs is achieved, the air medium can recover the original temperature and the state before ionization, and a good arc extinguishing effect is achieved;

through striking structure and magnet structure, the electric arc among the graphite unit gets into the arc extinguishing chamber, and the electric arc is elongated, and arc resistance increases, and electric arc and striking structure contact simultaneously, and the electric arc is cooled to will follow current interrupt, this structure can satisfy follow current interrupt capability under specific condition, also can obtain lower voltage protection level, and overall structure is compact simultaneously, and the volume is less.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a magnetic quenching assembly, a surge protection module, and a surge protector provided in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an arc quenching unit in the embodiment of the present application.

Fig. 3 is a schematic structural diagram of a surge protection module according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a surge protector provided in an embodiment of the present application.

Wherein, in the figures, the various reference numbers:

101. a base;

102. a surge protection module; 201. a housing; 202. a magnetic blow type arc extinguishing assembly;

1. a wiring electrode;

2. an arc quenching unit; 21. an arc extinguishing frame; 211. a partition plate; 212. an arc extinguishing chamber; 213. caulking grooves; 22. an arc striking structure; 221. a middle plate; 223. a side plate; 23. a magnet structure;

3. a graphite unit; 31. a graphite plate; 32. an insulating sheet;

4. a pin electrode;

5. a circuit board;

6. a first mounting seat;

7. and a second mounting seat.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 4, a magnetic quenching assembly, a surge protection module and a surge protector according to an embodiment of the present application will be described.

An embodiment of the present application provides a magnetic blowout type arc extinguishing assembly, please refer to fig. 1 and fig. 2, including:

the cable comprises wiring electrodes 1, wherein the wiring electrodes 1 are arranged at intervals, through holes are formed in the wiring electrodes 1, the wiring electrodes 1 are conductive metal plates, and square holes are formed in the tops of the wiring electrodes 1 and used for being connected with external cables;

the arc extinguishing unit 2 is arranged between the two wiring electrodes 1, the side part of the arc extinguishing unit 2 facing the wiring electrodes 1 is provided with an arc extinguishing cavity 212 communicated with the through hole, the two arc extinguishing cavities 212 are internally provided with an arc striking structure 22 and a magnet structure 23 which are mutually contacted, and a gap is reserved between the arc striking structure 22 and the adjacent wiring electrode 1;

the graphite unit 3 is arranged on one side of the wiring electrode 1, which is far away from the arc extinguishing unit 2, and the graphite unit 3 is provided with a through hole which is coaxially arranged with the through hole;

the pin electrode 4 is arranged on one side of the graphite unit 3, which is far away from the wiring electrode 1, and the pin electrode 4 is a conductive metal plate; and the number of the first and second groups,

and a circuit board 5 electrically connected between the wiring electrode 1 and the pin electrode 4, wherein one end of the arc striking structure 22 is connected with the circuit board 5 and is connected with the pin electrode 4 through the wiring of the circuit board 5, and in fig. 1, the circuit board 5 is horizontally arranged at the bottom.

The arc extinguishing unit 2 further comprises an arc extinguishing frame 21, the arc extinguishing frame 21 is an insulating plastic part, the arc extinguishing frame 21 is formed by plastic through integral casting, the side edge of the arc extinguishing frame 21 is provided with a clamping groove for clamping the wiring electrode 1, the shape of the wiring electrode 1 is consistent with the shape of an opening of the arc extinguishing cavity 212, the arc extinguishing cavity 212 is communicated with the graphite unit 3 only through a through hole of the wiring electrode 1, the arc extinguishing cavity 212 is located on two opposite sides of the arc extinguishing frame 21, and a partition plate 211 for separating the two arc extinguishing cavities 212 is arranged in the arc extinguishing frame 21.

The arc-quenching frame 21, which is designed as described above, not only can be firmly connected to the terminal electrode 1, but also provides a mounting position for the arc striking structure 22 and the magnet structure 23, and a quenching place for the arc.

The arc striking structure 22 is a conductive metal plate, the arc striking structure 22 includes an intermediate plate 221 and a side plate 223 which are integrally formed, two side edges of the intermediate plate 221 are respectively provided with a plurality of side plates 223 which are arranged at intervals, and the intermediate plate 221 and the side plates 223 are both rectangular structures.

The arc striking structure 22 with the design has the advantages of simple structure and convenience in manufacturing, can have a larger contact area with air, is further favorable for quickly extinguishing electric arcs, and can improve the heat dissipation effect.

Magnet structure 23 is the permanent magnet, and the permanent magnet is the bar form, and an arc structure 22 corresponds two permanent magnets, and permanent magnet and sideboard 223 laminating, the magnetic field that the permanent magnet can provide is more stable, and the permanent magnet of bar form can and the arc structure 22 of board shape between have great area of contact moreover, make things convenient for electric arc under the attraction in magnetic field, with arc structure 22 fully contact.

The permanent magnets are arranged in parallel with the middle plate 221, the arc quenching cavity 212 is provided with an embedded groove 213 for embedding the permanent magnets, and the design of the embedded groove 213 not only can separate the two permanent magnets, but also can firmly install the permanent magnets.

The gap distance between the arc striking structure 22 and the wiring electrode 1 is 3 mm, and in other embodiments, the distance may also be 2mm, 4 mm or 5 mm, and the gap with the above size not only can ensure the phase separation between the wiring electrode 1 and the arc striking structure 22, so as to facilitate the rapid heat dissipation and arc extinction of the arc striking structure 22, but also can not cause the over-size of the arc extinguishing frame 21, so that the volume of the whole magnetic blowout type arc extinguishing assembly 202 can be designed to be smaller.

Graphite unit 3 includes graphite board 31 and insulating piece 32, and graphite board 31 is provided with the polylith, and insulating piece 32 presss from both sides and locates between two adjacent graphite boards 31, all is provided with the through-hole on graphite board 31 and the insulating piece 32, and the through-hole only is provided with a set of central axis that just is located graphite unit 3 in this embodiment and arranges, and in other embodiments, the quantity of through-hole can also the adaptability increase.

The magnetic blow-out arc extinguishing assembly further comprises: the first mounting seat 6 and the second mounting seat 7 are arranged between the two pin electrodes 4, the same side part of the first mounting seat 6 and the second mounting seat 7 is fixedly connected with one pin electrode 4 through two screws, the other side part of the first mounting seat 6 and the second mounting seat 7 is fixedly connected with the other pin electrode 4 through two screws, and the arc quenching unit 2 and the two graphite units 3 are arranged between the first mounting seat 6 and the second mounting seat 7.

First mount pad 6 and second mount pad 7 are insulating working of plastics and by the integrative casting shaping of plastics, first mount pad 6, second mount pad 7 and two pin electrodes 4 form the square frame structure, the unit of putting out an arc 2 and two graphite units 3 just install in the square frame structure, structural stability has been promoted by a wide margin, and first mount pad 6 and second mount pad 7 are provided with the draw-in groove that supplies graphite board 31 and insulating piece 32 joint, make things convenient for graphite board 31 and insulating piece 32 to install fast fixed, structural firmness is good.

To sum up, the magnetism formula arc extinguishing subassembly that blows that this application provided compares with prior art:

when the surge protector works to generate power frequency follow current, electric arcs can be continuously generated in the graphite unit 3, high temperature is generated to enable gas to expand and ionized ions to flow towards the arc extinguishing cavity 212 through the through holes of the graphite unit 3 under the action of air pressure, and the ionized ions can be adsorbed on the arc striking structure 22 under the action of the magnetic field force of the magnet, namely the process of attracting the electric arcs is realized, so that the purpose of cooling the electric arcs is realized, the air medium can recover the original temperature and the state before ionization, and a good arc extinguishing effect is achieved;

through the arc striking structure 22 and the magnet structure 23, the electric arc in the graphite unit 3 enters the arc extinguishing cavity 212, the electric arc is lengthened, the arc resistance is increased, meanwhile, the electric arc is in contact with the arc striking structure 22, and the electric arc is cooled, so that follow current is interrupted.

An embodiment of the present application provides a surge protection module, please refer to fig. 1 and fig. 3, including:

a housing 201, wherein the housing 201 is hollow; and the number of the first and second groups,

as with the magnetic blowout type arc extinguishing assembly 202, the magnetic blowout type arc extinguishing assembly 202 is mounted in the housing 201, and one end of the pin electrode 4 of the magnetic blowout type arc extinguishing assembly 202 extends out of the housing 201.

The shell 201 has a good protection effect on the magnetic quenching assembly 202 located inside, and one end of the pin electrode 4 extends out of the shell 201, so that the magnetic quenching assembly 202 can be inserted and installed. Based on the advantages of the arc quenching assembly 202, the surge protection module 102 also has the following advantages: when the arc extinguishing device works, the generated arc is elongated under the action of the magnet structure 23, the arc resistance is increased, and therefore the arc extinguishing device has a good arc extinguishing effect, better protection capability on later-stage equipment and smaller size.

An embodiment of the present application provides a surge protector, please refer to fig. 2, fig. 3 and fig. 4, including: as above surge protection module 102 and base 101, base 101 is provided with the breach that supplies surge protection module 102 to peg graft, is equipped with the jack in the breach, and the tip that pin electrode 4 stretches out passes the jack and inserts the inside of base 101.

The base 101 is a position for inserting and installing the surge protection module 102, and the end of the pin electrode 4 can be inserted into the base 101 for electrical connection, so that the structure is relatively firm, and the assembly and disassembly are convenient. On the basis of the advantages of the surge protection module 102, the surge protector also has the advantages that: when the arc extinguishing device works, the generated arc is elongated under the action of the magnet structure 23, the arc resistance is increased, and therefore the arc extinguishing device has a good arc extinguishing effect, better protection capability on subsequent equipment and smaller size.

The present application is intended to cover various modifications, equivalent arrangements, and adaptations of the present application without departing from the spirit and scope of the present application.

Claims (10)

1. A magnetic blowout assembly, comprising:

the wiring electrode (1), two and interval arrangement are provided for the wiring electrode (1), and the wiring electrode (1) is provided with a perforation;

the arc quenching unit (2) is installed between the two wiring electrodes (1), an arc quenching cavity (212) communicated with the through hole is formed in the side portion, facing the wiring electrodes (1), of the arc quenching unit (2), arc striking structures (22) and magnet structures (23) which are in mutual contact are arranged in the two arc quenching cavities (212), and a gap is reserved between each arc striking structure (22) and the adjacent wiring electrode (1);

the graphite unit (3) is mounted on one side, away from the arc quenching unit (2), of the wiring electrode (1), and the graphite unit (3) is provided with a through hole which is arranged coaxially with the through hole;

the pin electrode (4) is arranged on one side, away from the wiring electrode (1), of the graphite unit (3); and the number of the first and second groups,

and the circuit board (5) is electrically connected between the wiring electrode (1) and the pin electrode (4).

2. A magnetic blowout quenching assembly according to claim 1, wherein the blowout unit (2) further comprises a blowout frame (21), the blowout chambers (212) are located on two opposite sides of the blowout frame (21), and a partition (211) is provided in the blowout frame (21) to separate the two blowout chambers (212).

3. The arc quenching assembly according to claim 2, wherein the arc striking structure (22) is a conductive metal plate, the arc striking structure (22) comprises a middle plate (221) and side plates (223), and two side edges of the middle plate (221) are respectively provided with a plurality of side plates (223) arranged at intervals.

4. A magnetic blowout assembly according to claim 3, wherein the magnet structure (23) is a permanent magnet, the permanent magnet is in the form of a strip, one arc striking structure (22) corresponds to two permanent magnets, and the permanent magnets are attached to the side plate (223).

5. A blow-out arc extinguishing assembly according to claim 4, characterized in that the permanent magnet and the intermediate plate (221) are arranged in parallel, the arc extinguishing chamber (212) being provided with a caulking groove (213) for the permanent magnet to be embedded.

6. Magnetic blowout assembly according to claim 1, wherein the gap distance between the ignition structure (22) and the terminal electrode (1) is 2-5 mm.

7. The assembly according to claim 1, wherein the graphite unit (3) comprises a graphite plate (31) and an insulating plate (32), the graphite plate (31) is provided with a plurality of blocks, the insulating plate (32) is sandwiched between two adjacent graphite plates (31), and the through holes are formed in both the graphite plate (31) and the insulating plate (32).

8. The magnetic blow-out arc extinguishing assembly of claim 1, further comprising: the first mounting seat (6) and the second mounting seat (7), the first mounting seat (6) and the second mounting seat (7) are clamped between the two pin electrodes (4), and the arc quenching unit (2) and the two graphite units (3) are mounted between the first mounting seat (6) and the second mounting seat (7).

9. A surge protection module, comprising:

a housing (201), the housing (201) being hollow; and (c) a second step of,

the magnetic blow-out arc extinguishing assembly (202) according to any of claims 1 to 8, wherein the magnetic blow-out arc extinguishing assembly (202) is mounted in the housing (201), and one end of the pin electrode (4) of the magnetic blow-out arc extinguishing assembly (202) protrudes out of the housing (201).

10. A surge protector device, comprising: a surge protection module (102) as claimed in claim 9 and a base (101), said base (101) being provided with a notch into which said surge protection module (102) is inserted, said notch being provided with a socket through which the protruding end of said pin electrode (4) passes and is inserted into the interior of said base (101).

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