CN218957609U - Electrical isolation switch - Google Patents

Abstract

The application discloses electrical isolation switch, wherein, electrical isolation switch has configured the shared magnet for the switching layer of adjacent two-layer, the magnetic field that the shared magnet formed can act on the electric arc that produces in the adjacent two-layer switching layer simultaneously, strengthens through this kind of mode electrical isolation switch's arc extinguishing ability.

Description

Electrical isolation switch

Technical Field

The application relates to the field of switches, in particular to an electrical isolation switch.

Background

In recent years, the application of the direct current transmission system is more and more popular, and the direct current transmission system is developed towards high voltage and high current directions. The improvement of the voltage of the direct current transmission system brings the advantages of cost reduction, line active loss reduction, power generation efficiency improvement and the like for direct current transmission, and meanwhile, some hidden dangers are added to a certain extent, wherein the direct current arc fault is a typical potential safety hazard in direct current transmission.

For example, in a photovoltaic system, a direct current switch for controlling a photovoltaic panel and an inverter is provided with a static contact portion and a movable contact portion capable of moving relative to the static contact portion, and when a voltage and/or a current in a direct current circuit is greater than a preset range, an arc is formed between the movable contact portion of the direct current switch and an instant when the static contact portion is separated from the movable contact portion in a process of cutting off the conducted direct current circuit through the direct current switch. The greater the voltage or current in the dc circuit, the more arcs are generated during the opening of the dc circuit by the dc switch, which can damage surrounding equipment if the arcs continue to burn, and even cause an explosion.

There are many arc extinguishing schemes, for example, increasing the diameter of the movable contact part to increase the opening distance to elongate the arc, accelerating the breaking speed, adding a magnet for arc extinguishing, etc. However, these arc extinguishing schemes have certain defects, for example, increasing the diameter of the movable contact portion can lead to an increase in the overall size of the dc switch, which is contrary to the current trend of miniaturization of the switch, the increase of the breaking speed has obvious speed limit, the increase of the breaking speed can lead to a decrease in the control stability and the service life of the dc switch, and the arc extinguishing effect of the additional magnet is not obvious, so that the application requirements cannot be met.

Thus, a new arc extinction scheme is desired.

Disclosure of Invention

An advantage of the present application is that an electrical disconnector is provided, wherein the electrical disconnector is provided with a common magnet for the switching layers of two adjacent layers, the magnetic field formed by the common magnet being able to act simultaneously on the electric arcs generated in the switching layers of two adjacent layers.

Another advantage of the present application is that it provides an electrical disconnector, wherein the thickness of the common magnet of the electrical disconnector is increased, and the magnetic field strength is increased, which is advantageous for improving the arc extinguishing capability of the electrical disconnector.

Another advantage of the present application is to provide an electrical disconnector, wherein an arc generated in a switching layer of the electrical disconnector between a switching layer of a topmost layer and a switching layer of a bottommost layer is not only subjected to the action of a common magnet between the switching layer and the switching layer located above it, but also to the action of a common magnet between the switching layer and the switching layer located below it, so that the arc extinguishing capability of the disconnector can be further improved.

Yet another advantage of the present application is to provide an electrical disconnector, wherein the electrical disconnector may reduce costs to some extent by sharing magnets, reducing assembly time of the magnets.

A further advantage of the present application is that it provides an electrical disconnector, wherein a common magnet arranged in two adjacent switching layers in the electrical disconnector overlaps with the two adjacent switching layers, respectively, in an axial direction in which the electrical disconnector is set, such that the electrical disconnector is capable of enhancing an arc extinguishing capability of the electrical disconnector without substantially increasing its overall size.

A further advantage of the present application is that it provides an electrical disconnector that is capable of regulating the breaking performance of the switching layers of each layer using a heterogeneous magnet formed by combining a permanent magnet and a soft magnet.

Still another advantage of the present application is that it provides an electrical disconnector, wherein the electrical disconnector is extinguished by means of a magnet extinguishing scheme, and the magnetic field formed by the magnet is adjusted by adjusting the deployment of the magnet, so that the magnetic field formed by the magnet can bend the arc in different ways to lengthen the movement path of the arc, accelerate the breaking and extinguishing of the arc, and in such a way, enhance the extinguishing capability of the electrical disconnector.

According to one aspect of the present application, there is provided a multilayer switching layer structure comprising:

a first switching layer having a first mounting cavity, comprising: a pair of first static conductive elements mounted within the first mounting cavity and a first movable conductive element movable relative to the pair of first static conductive elements, the first movable conductive element being adapted to be moved to selectively engage or disengage the pair of static conductive elements;

A second switching layer having a second mounting cavity, comprising: a pair of second stationary conductive elements mounted within the second mounting cavity and a second movable conductive element movable relative to the pair of second stationary conductive elements, the second movable conductive elements being adapted to be moved to selectively engage or disengage the pair of second stationary conductive elements; and

the first magnetic component is arranged between the first switch layer and the second switch layer, the first magnetic component is arranged between the first switch layer and the second switch layer and comprises a first magnet, the first magnet is provided with a first magnetic pole and a second magnetic pole which are opposite, the first magnetic pole of the first magnet stretches into the first installation cavity, and the second magnetic pole of the first magnet stretches into the second installation cavity.

In the multilayer switching layer structure according to the present application, the first magnet corresponds to both the movement path of the first movable contact conductive element and the movement path of the second movable contact conductive element.

In the multilayer switch layer structure according to the application, each first static contact conductive element is provided with a first static contact conductive end, each second static contact conductive element is provided with a second static contact conductive end, and the first static contact conductive end and the second static contact conductive end correspond to each other in the set axial direction of the multilayer switch layer structure.

In the multilayer switch layer structure according to the present application, a center line between first static contact conductive ends of a pair of the first static contact conductive elements and a center line between second static contact conductive ends of a pair of the second static contact conductive elements are parallel to each other.

In the multilayer switching layer structure according to the present application, the first magnet is disposed below the first movable contact conductive element and above the second movable contact conductive element.

In the multilayer switching layer structure according to the present application, the first magnet is disposed outside the first movable contact conductive element and the second movable contact conductive element.

In the multilayer switching layer structure according to the present application, the first magnet includes a permanent magnet portion and a soft magnet portion.

In the multilayer switching layer structure according to the present application, the first magnet includes two permanent magnet portions and a soft magnet portion sandwiched between the two permanent magnet portions.

In the multilayer switch layer structure according to the present application, the first switch layer further includes a first carrier housing for mounting the first static contact conductive element and the first dynamic contact conductive element, and at least a portion of the first magnet is wrapped around the first carrier housing.

In the multilayer switching layer structure according to the present application, the first bearing housing has a first mounting groove concavely formed at a bottom surface thereof, and the first magnet is mounted to the first mounting groove.

In the multilayer switching layer structure according to the present application, the first magnet protrudes downward from the first mounting groove.

In the multilayer switch layer structure according to the present application, the first switch layer further includes a first receiving case located between the first bearing case and the second switch layer, the first receiving case has a first groove concavely formed at a top surface thereof and corresponding to the mounting groove, and the first magnet is coated in the mounting groove and the first groove.

In the multilayer switching layer structure according to the present application, the first magnet is kept insulated with respect to the first and second movable contact conductive assemblies.

In the multilayer switch layer structure according to the present application, the first magnetic component further includes a second magnet disposed on the motion path of the first movable contact conductive element and having a certain distance from the first magnet, and the magnetic poles of the first magnet and the second magnet face opposite.

In the multilayer switching layer structure according to the present application, the first magnetic assembly further includes a third magnet adjacent to the first magnet, the first magnet having a magnetic pole facing opposite to a magnetic pole facing of the second magnet, the second magnet being the same as the third magnet, the first magnet having a magnetic pole facing opposite to the third magnet.

According to another aspect of the present application, there is also provided an electrical isolation switch, comprising:

a multilayer switching layer structure as described above; and

an actuation control assembly operably connected to the multi-layer switch layer structure, wherein the actuation control assembly is configured to control switching of at least one switch layer of the multi-layer switch layer structure between an on state and an off state.

Further objects and advantages of the present application will become fully apparent from the following description and the accompanying drawings.

These and other objects, features, and advantages of the present application will become more fully apparent from the following detailed description, the accompanying drawings, and the appended claims.

Drawings

The foregoing and other objects, features and advantages of the present application will become more apparent from the following more particular description of embodiments of the present application, as illustrated in the accompanying drawings. The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate the application and not constitute a limitation to the application. In the drawings, like reference numerals generally refer to like parts or steps.

Fig. 1 illustrates a schematic perspective view of the electrical isolation switch according to an embodiment of the present application.

Fig. 2 illustrates a partially disassembled schematic view of the electrical isolation switch according to an embodiment of the present application.

Fig. 3 illustrates a partially disassembled schematic view of adjacent two switching layers of the electrical isolation switch according to an embodiment of the present application.

Fig. 4 illustrates a schematic cut-away view of adjacent two switching layers of the electrical isolation switch according to an embodiment of the present application.

Fig. 5 illustrates another schematic cut-away view of adjacent two switching layers of the electrical isolation switch according to an embodiment of the present application.

Fig. 6 illustrates a partial schematic view of a switching layer of the electrical isolation switch according to an embodiment of the present application.

Fig. 7 illustrates a partially disassembled schematic view of adjacent two switching layers of a variant implementation of the electrical isolation switch according to an embodiment of the present application.

Fig. 8 illustrates a schematic diagram of a heterogeneous magnet of the electrical isolation switch according to an embodiment of the present application.

Detailed Description

Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application and not all of the embodiments of the present application, and it should be understood that the present application is not limited by the example embodiments described herein.

Summary of the application

As described above, there are many schemes of arc extinction, for example, increasing the diameter of the movable contact portion to increase the opening distance to elongate the arc, increasing the breaking speed, adding a magnet for arc extinction, and the like. However, these arc extinguishing schemes have certain defects, for example, increasing the diameter of the movable contact portion can lead to an increase in the overall size of the dc switch, which is contrary to the current trend of miniaturization of the switch, the increase of the breaking speed has obvious speed limit, the increase of the breaking speed can lead to a decrease in the control stability and the service life of the dc switch, and the arc extinguishing effect of the additional magnet is not obvious, so that the application requirements cannot be met.

Thus, a new arc extinction scheme is desired.

The inventors of the present application found that in the conventional magnet arc extinguishing scheme, in general, magnets disposed at each switching layer act on arcs of the switching layer where they are located independently, for example, a magnetic field generated by a magnet disposed at a first switching layer acts only on arcs generated at the first switching layer, which limits the arc extinguishing performance of the magnets.

Accordingly, the inventor of the application proposes that the spatial distribution of each switching layer is changed, and a shared space for placing the shared magnet is created between two adjacent switching layers under the condition that the overall spatial dimension of the switching layers is not increased or is not greatly increased. The shared space breaks the space gap between the adjacent switch layers, utilizes the idle space of the two switch layers, can accommodate a magnet with larger size, improves the magnetic field strength of a magnetic field generated by the magnet, and improves the space utilization rate and the arc extinguishing capability of the electric isolating switch in such a way.

Accordingly, the present application provides an electrical isolation switch comprising: a first switching layer having a first mounting cavity, a second switching layer having a second mounting cavity, a first magnetic assembly disposed between the first switching layer and the second switching layer, the first switching layer comprising: a pair of first static conductive elements mounted within the first mounting cavity and a first movable conductive element movable relative to the pair of first static conductive elements, the first movable conductive element adapted to be moved to selectively engage or disengage the pair of static conductive elements, the second switching layer comprising: a pair of second static conductive elements mounted in the second mounting cavity and a second movable conductive element movable relative to the pair of second static conductive elements, the second movable conductive elements being adapted to be moved to selectively engage and disengage the pair of second static conductive elements, the first magnetic assembly including a first magnet having opposed first and second poles, the first pole of the first magnet extending into the first mounting cavity and the second pole of the first magnet extending into the second mounting cavity.

Having described the basic principles of the present application, various non-limiting embodiments of the present application will now be described in detail with reference to the accompanying drawings.

Schematic electrical disconnector

As shown in fig. 1 to 8, the electrical isolating switch according to the embodiment of the present application is illustrated, which provides a novel arc extinguishing scheme, and can be widely applied in various scenes, for example, in the dc power on-off process of a photovoltaic system.

Specifically, in the embodiment of the present application, as shown in fig. 1, the electrical isolation switch includes at least two switch layers stacked on each other in an axial direction set by the electrical isolation switch to form a multi-layer switch layer structure 50, where the axial direction set by the electrical isolation switch is an extending direction of a longitudinal center axis L of the electrical isolation switch, and the axial direction set by the multi-layer switch layer structure 50 is consistent with the axial direction set by the electrical isolation switch. For ease of illustration and understanding, the multi-layer switching layer structure 50 is exemplified as comprising two switching layers, namely a first switching layer 10 and a second switching layer 20.

In an embodiment of the present application, each switching layer includes a carrier housing, a pair of stationary conductive elements mounted to the carrier housing, and a movable contact conductive assembly mounted to the carrier housing. The movable contact conductive assembly includes a movable contact conductive element movable relative to a pair of the stationary contact conductive elements, the movable contact conductive element being adapted to be moved to selectively engage or disengage the pair of stationary contact conductive elements to effect switching of the switching layer between an on state and an off state. The switching layer is in an on state when the movable contact conductive element is engaged with the pair of the stationary contact conductive elements, and is in an off state when the movable contact conductive element is disengaged from the pair of the stationary contact conductive elements.

Accordingly, as shown in fig. 3, the first switch layer 10 includes a first carrier housing 11, a pair of first static contact conductive elements 13, and a first movable contact conductive assembly 14, and the pair of first static contact conductive elements 13 and the first movable contact conductive assembly 14 are mounted on the first carrier housing 11. The first carrier housing 11 has a first carrier cavity 101, as shown in fig. 3, the first carrier housing 11 has a first carrier peripheral wall 1011 and a first carrier bottom wall 1012, and the first carrier peripheral wall 1011 and the first carrier bottom wall 1012 enclose the first carrier cavity 101. The first switch layer 10 further includes a first cover 15 covering the first carrier 11, where the first cover 15 has a first covering cavity 102, and the first carrier 101 and the first covering cavity 102 form a first mounting cavity 110 of the first switch layer 10, for accommodating the first static contact conductive element 13 and the first movable contact conductive assembly 14. The first movable contact conductive assembly 14 comprises a first movable contact conductive element 141 movable relative to a pair of the first stationary contact conductive elements 13, the first movable contact conductive element 141 being adapted to be moved to selectively engage or disengage with a pair of the first stationary contact conductive elements 13 to effect switching of the first switching layer 10 between an on state and an off state. The first switching layer 10 is in an on state when the first movable contact conductive element 141 is engaged with the pair of first stationary contact conductive elements 13, and the first switching layer 10 is in an off state when the first movable contact conductive element 141 is disengaged from the pair of first stationary contact conductive elements 13.

Each first static contact conductive element 13 has a first static contact conductive end 131, and the first movable contact conductive element 141 has a pair of first movable contact conductive ends. During the movement of the first movable contact conductive element 141 with respect to the first stationary contact conductive element 13, a pair of first movable contact conductive ends of the first movable contact conductive element 141 are respectively engaged with or disengaged from a pair of first stationary contact conductive ends 131 of a pair of the first stationary contact conductive elements 13.

The second switch layer 20 includes a second carrier housing 21, a pair of second static contact conductive elements 23, and a second movable contact conductive assembly 24, where the pair of second static contact conductive elements 23 and the second movable contact conductive assembly 24 are mounted on the second carrier housing 21. The second bearing housing 21 has a second bearing peripheral wall 2011 and a second bearing bottom wall 2012, and the second bearing peripheral wall 1011 and the second bearing bottom wall 2012 enclose the second bearing cavity 201. The first switch layer 10 further includes a first receiving housing 12 located between the first carrying housing 11 and the second switch layer 20, the first receiving housing 12 has a first receiving partition 1201, a first receiving peripheral wall 1202 and a second receiving peripheral wall 1203, the first receiving partition 1201 and the first receiving peripheral wall 1202 enclose to form a first receiving cavity 103, the first receiving partition 1201 and the second receiving peripheral wall 1203 enclose to form a second receiving cavity 104, and the first receiving partition 1201 forms a common receiving wall between the first receiving cavity 103 and the second receiving cavity 104. The second receiving cavity 104 is located below the first receiving cavity 103, the first receiving cavity 103 forms an upper half portion of the first receiving housing 12 and accommodates the first bearing housing 11 therein, the second receiving cavity 104 forms a lower half portion of the first receiving housing 12 and covers the second bearing housing 12, and the second receiving cavity 104 and the second bearing cavity 12 form a second mounting cavity 210 of the second switch layer 20 for accommodating the second static contact conductive element 23 and the second movable contact conductive assembly 24.

The second movable contact conductive assembly 24 includes a second movable contact conductive element 241 movable relative to the pair of second stationary contact conductive elements 23, the second movable contact conductive element 241 being adapted to be moved to selectively engage or disengage the pair of second stationary contact conductive elements 23 to effect switching of the second switching layer 20 between an on state and an off state. The second switching layer 20 is in an on state when the second movable contact conductive element 241 is engaged with the pair of second stationary contact conductive elements 23, and the second switching layer 20 is in an off state when the second movable contact conductive element 241 is disengaged from the pair of second stationary contact conductive elements 23.

Each second stationary contact conductive element 23 has a second stationary contact conductive end 231, and the second movable contact conductive element 241 has a pair of second movable contact conductive ends. During movement of the second movable contact conductive element 241 relative to the second stationary contact conductive element 23, a pair of second movable contact conductive ends of the second movable contact conductive element 241 respectively engage with or disengage from a pair of second stationary contact conductive ends 231 of a pair of the second stationary contact conductive elements 23.

Each switching layer generates an arc in the state switching process, and in the embodiment of the application, the arc is extinguished by using a scheme of arc extinction by using a magnet. The inventor of the application finds that in the traditional magnet arc extinguishing scheme, the arc extinguishing effect is not obvious, and the application requirement cannot be met frequently. Specifically, in the conventional magnet quenching scheme, in general, magnets disposed at each switching layer act on arcs of the switching layer where they are located, respectively, independently, for example, a magnetic field generated by a magnet disposed at a first switching layer acts only on arcs generated at the first switching layer, which limits quenching performance of the magnet.

Further, the inventors of the present application found that the arc extinguishing effect of the magnet is related to its arrangement. Specifically, in a conventional dc switch, normally, the static contact portions of two adjacent switch layers are staggered, for example, a pair of static contact portions of a first switch layer are arranged along a first direction, and a pair of static contact portions of a second switch layer adjacent to the first switch layer are arranged along a second direction forming an included angle with the first direction. Correspondingly, the movable contact parts of the two switch layers are also staggered in the rotating process. The electric arc is formed between the static contact part and the movable contact part, and the movement track of the electric arc is basically consistent with the movement path of the movable contact part under the interference of external factors such as no magnetic field, so that in the scheme of arc extinction of the magnet, the magnet takes the movement path of the movable contact part as a reference. Accordingly, the magnets of two adjacent layers are also staggered, the moving paths of the magnets arranged on each switching layer and the moving contact parts of the switching layers adjacent to the switching layer are staggered, and the electric arcs generated in the switching layers adjacent to the switching layer are difficult to act. In this way, the magnets disposed in each switching layer act on the arcs of the switching layer in which they are disposed, respectively, independently, for example, the magnetic field generated by the magnets disposed in the first switching layer acts only on the arcs generated by the first switching layer, which limits the arc extinguishing performance of the magnets.

In order to meet the development trend of miniaturization of the switch, the space for arranging the magnet is limited, the thickness dimension of the magnet and the strength of the generated magnetic field are limited by the dimension of the switch layer, and the arc extinguishing performance of the magnet is limited to a certain extent.

Based on this, this application proposes, set up the shared magnet that can all act on to the electric arc in the adjacent two-layer switching layer between adjacent two-layer switching layer, improves the utilization ratio of magnet. Specifically, in this application embodiment, be equipped with magnetic assembly between every adjacent two-layer switching layer, at least some magnet in the magnetic assembly can be respectively to the play arc extinguishing effect of adjacent two-layer switching layer, forms the shared magnet of adjacent two-layer switching layer, improves through such a manner the utilization ratio of magnet. Taking two adjacent switch layers as a first switch layer 10 and a second switch layer 20 as an example, the electrical isolation switch includes a first magnetic component 30 disposed between the first switch layer 10 and the second switch layer 20, the first magnetic component 30 includes a first magnet 31 corresponding to a movement path of the first movable contact conductive element 141 and a movement path of the second movable contact conductive element 241 at the same time, and the first magnet 31 can act on an arc generated in the first switch layer 10 and an arc generated in the second switch layer 20 at the same time as a common magnet between the first switch layer 10 and the second switch layer 20.

It should be noted that the first magnet 31 may correspond to the movement path of the first movable contact conductive element 141 and the movement path of the second movable contact conductive element 241 in the axial direction set by the electrical isolation switch, or may correspond to the movement path of the first movable contact conductive element 141 and the movement path of the second movable contact conductive element 241 in the radial direction set by the electrical isolation switch, where the radial direction set by the electrical isolation switch is perpendicular to the axial direction set by the electrical isolation switch.

It is also worth mentioning that the provision of a common magnet between adjacent switching layers may reduce the assembly time of the magnets to some extent.

Specifically, in the embodiment of the present application, the first static contact conductive end 131 of the first static contact conductive element 13 and the second static contact conductive end 231 of the second static contact conductive element 23 correspond to each other in the axial direction set by the electrical isolation switch. In this way, the movement path of the first movable contact conductive element 141 moving relative to the first static contact conductive element 13 and the movement path of the second movable contact conductive element 241 moving relative to the second static contact conductive element 23 correspond to each other in the axial direction set by the electrical isolation switch, creating a basic condition for providing a common magnet between the first switching layer 10 and the second switching layer 20, and providing a common magnet at the position where the first switching layer 10 and the second switching layer 20 correspond to each other.

More specifically, a center line (i.e., a first center line l 1) between the first static contact conductive ends 131 of the pair of first static contact conductive elements 13 and a center line (i.e., a second center line l 2) between the second static contact conductive ends 231 of the pair of second static contact conductive elements 23 are parallel to each other. The first center line l1 refers to a line between the geometric center of the first static contact conductive end 131 of one first static contact conductive element 13 of the pair of first static contact conductive elements 13 and the geometric center of the first static contact conductive end 131 of the other first static contact conductive element 13. The second center line l2 refers to a line between the geometric center of the second static contact conductive end 231 of one second static contact conductive element 23 of the pair of second static contact conductive elements 23 and the geometric center of the second static contact conductive end 231 of the other second static contact conductive element 23.

It should be noted that, in the variant embodiment of the present application, the first static contact conductive element 13 and the second static contact conductive element 23 may not completely correspond to each other. A portion of the common magnet corresponds to a movement path of the first movable contact conductive element 141, and another portion corresponds to a movement path of the second movable contact conductive element 241.

Theoretically, when the first magnet 31 corresponds to the movement path of the first movable contact conductive element 141 and the movement path of the second movable contact conductive element 241 at the same time and the distances from the first movable contact conductive element 141 and the second movable contact conductive element 241 are within a certain range, the first magnet 31 can simultaneously act on the arc generated in the first switching layer 10 and the arc generated in the second switching layer 20 even if the first magnet 31 does not overlap with the first switching layer 10 and/or the second switching layer 20 in the axial direction set by the electrical isolation switch. For example, a separate magnet accommodating layer is provided between the first switching layer 10 and the second switching layer 20, the magnet accommodating layer and the first switching layer 10 and the second switching layer 20 have no overlapping portion in the axial direction set by the isolating switch, and the first magnet 31 provided in the magnet accommodating layer can act on the arc generated in the first switching layer 10 and the arc generated in the second switching layer 20 at the same time, however, such arrangement means that the entire volume of the electric isolating switch is increased. For another example, the first magnet 31 is disposed at the bottom of the first switch layer 10, and the first switch layer 10 is not overlapped with the second switch layer 20 in the axial direction set by the electrical isolation switch, because the first switch layer 10 and the second switch layer 20 are adjacent, the distance between the bottom of the first switch layer 10 and the second movable contact conductive element 241 of the second switch layer 20 is relatively close, and the first magnet 31 disposed at the bottom of the first switch layer 10 may also act on the arc generated in the second switch layer 20, however, the size of the first magnet 31 is limited by the size of the switch layer where it is disposed. And compared with the distance between the first magnet 31 and the first movable contact conductive element 141 of the first switching layer 10, the distance between the first magnet 31 and the second movable contact conductive element 241 of the second switching layer 20 is far, the acting force of the first magnet 31 on the arc generated in the first switching layer 10 is different from the acting force of the second magnet 32 on the arc generated in the second switching layer 20, and the uniformity of the arc extinguishing performance of the two adjacent switching layers is affected.

In order to optimize the space utilization and arc extinguishing capability of the isolating switch, in the application, by changing the space distribution of the adjacent switch layers, a shared space for placing the shared magnet is created between the two adjacent switch layers without increasing or greatly increasing the overall space size of the switch layers. The space gap between the adjacent switch layers is broken through by the shared space, the 'idle' space of the two switch layers is utilized, a magnet with a larger size can be accommodated, the magnetic field strength of a magnetic field generated by the magnet is improved, and in such a way, the space utilization rate and the arc extinguishing capacity of the electric isolating switch are improved, and the breaking capacity of the electric isolating switch is further improved.

Specifically, in the embodiment of the present application, the first magnet 31 is disposed between the movement plane of the first movable contact conductive element 141 and the movement plane of the second movable contact conductive element 241. The first magnet 31 has opposite first and second poles, the first pole extending into the first mounting cavity 110 of the first switching layer 10 and the second pole extending into the second mounting cavity 210 of the second switching layer 20. Specifically, the first magnetic pole extending into the first mounting cavity 110 of the first switching layer 10 may be implemented such that the first magnetic pole of the first magnet 31 passes through a housing structure (i.e., the first carrying housing 11 or the first cover 15) forming the first mounting cavity 110, is exposed to the first mounting cavity 110, or may be implemented such that the first magnetic pole of the first magnet 31 overlaps with the first mounting cavity 110 on an axis set by the electrical isolation switch, and a portion of the first magnetic pole overlapping with the first mounting cavity 110 is at least partially wrapped. The second magnetic pole extending into the second mounting cavity 210 of the second switch layer 20 may be implemented such that the second magnetic pole of the first magnet 31 passes through a housing structure forming the second mounting cavity 210 (i.e., the first receiving partition 1201 or the second receiving peripheral wall 1203 of the first receiving housing 12, or the second receiving peripheral wall 21) and is exposed to the second mounting cavity 210, or may be implemented such that the second magnetic pole of the first magnet 31 overlaps with the second mounting cavity 210 on an axis set by the electrical isolation switch, and a portion where the second magnetic pole overlaps with the second mounting cavity 210 is at least partially wrapped.

It should be noted that the arc extinguishing capability of the first magnet 31 on the first switching layer 10 and the second switching layer 20 can be adjusted by adjusting the dimensions of the overlapping portions of the first magnet 31 and the first mounting cavity 110 of the first switching layer 10 and the second mounting cavity 210 of the second switching layer 20, respectively, and the distances between the first magnet 31 and the first movable contact conductive element 141 and the second movable contact conductive element 241, respectively. For example, when it is desired that the arc extinguishing ability of the first magnet 31 to the first switching layer 10 and the second switching layer 20 be uniform, the first magnet 31 may be provided to be identical in size to the overlapping portions of the first switching layer 10 and the second switching layer 20, respectively, and the first magnet 31 may be uniform in distance to the first movable contact conductive member 141 and the second movable contact conductive member 241, respectively.

More specifically, in the embodiment of the present application, at least a portion of the first magnet 31 is mounted on the first carrying case 11, and the first magnet 31 may be disposed without increasing or greatly increasing the overall size of the first switch layer 10 by using the space of the first carrying case 11 itself.

In the embodiment of the present application, the first magnetic pole of the first magnet 31 is accommodated mainly by using the thickness space of the first bearing bottom wall 1012 of the first bearing housing 11, and the first bearing housing 11 has the first mounting groove 112 concavely formed at the bottom surface thereof. Specifically, the first mounting groove 112 extends from the bottom surface of the first carrier bottom wall 1012 of the first carrier housing 11 toward the top surface thereof. The first mounting groove 112 at least partially overlaps the first mounting cavity 110 of the first switch layer 10 in the axial direction set by the electrical isolation switch, the first magnet 31 is mounted in the first mounting groove 112, and at least a portion of the first magnet 31 is covered in the first mounting groove 112 of the first carrier housing 11, in such a way that the first magnetic pole of the first magnet 31 protrudes into the first mounting cavity 110. The portion of the first carrier housing 11 covering the first magnet 31 is made of an insulating material so that the first magnet 31 is kept insulated from the first movable contact conductive assembly 14.

The first magnet 31 protrudes downward from the first mounting groove 112 to extend to the second switching layer 20 located under the first switching layer 10. In the embodiment of the present application, the thickness space of the first receiving compartment 1201 of the first receiving housing 12 is mainly used to accommodate the second pole of the first pole 31. The first receiving housing 12 at least partially overlaps the second switch layer 20 in the axial direction set by the electrical isolation switch, the first receiving housing 12 has a first groove 121 concavely formed on the top surface thereof and corresponding to the first mounting groove 112, the first groove 121 extends from the top surface of the first receiving partition of the first receiving housing 12 toward the bottom surface thereof, the first groove 121 at least partially overlaps the second mounting cavity 210 of the second switch layer 20 in the axial direction set by the electrical isolation switch, and the first magnet 31 is coated in the first mounting groove 112 and the first groove 121, in such a way that the second magnetic pole of the first magnet 31 extends into the second mounting cavity 210. The portion of the first receiving housing 12 for accommodating the first magnet 31 uses the space of the second switch layer 20 itself, and the first magnet 31 may be disposed without increasing or greatly increasing the overall size of the second switch layer 20. The portion of the first socket housing 12 that encloses the first magnet 31 is made of an insulating material so that the first magnet 31 remains insulated from the second movable contact conductive assembly 24.

In this embodiment, the first mounting groove 112 and the first groove 121 are mutually communicated to form a shared space between the first switch layer 10 and the second switch layer 20, which breaks a space gap between the first switch layer 10 and the second switch layer 20, and the first magnet 31 disposed between the first switch layer 10 and the second switch layer 20 may extend to the second switch layer 20. In this way, the dimension of the first magnet 31 in the axial direction of the electric disconnecting switch increases, that is, the thickness dimension of the first magnet 31 increases, and the magnetic field strength of the magnetic field generated by the first magnet increases, which is advantageous for improving the arc extinguishing capability of the electric disconnecting switch. And the thicker magnet can prolong the movement path of the electric arc to a certain extent, and accelerate the arc extinguishing speed. Moreover, the magnet with larger volume is easier to process and assemble, so that the increase of the size of the magnet can reduce the processing cost to a certain extent and improve the processing efficiency.

It should be noted that the radial dimension of the first receiving housing 12 may be greater than or equal to the radial dimension of the first carrying housing 11, or may be smaller than the radial dimension of the first carrying housing 11, which is not limited in this application, as shown in fig. 3 and 7. In a specific example of the present application, the radial dimension of the first receiving housing 12 is greater than or equal to the radial dimension of the first receiving housing 11, the first receiving housing 12 includes an upper portion having a first receiving cavity 103 and a lower portion having a second receiving cavity 104, the first receiving housing 11 is received in the upper portion of the first receiving housing 12 in the first receiving cavity 103, and the second receiving housing 21 is received in the second receiving cavity 104 in the lower portion of the first receiving housing 12. In another specific example of the present application, the radial dimension of the first socket housing 12 is smaller than the radial dimension of the first carrier housing 11, and the first carrier housing 11 corresponds to at least one common magnet between the first switch layer 10 and the second switch layer 20. Here, the radial dimension refers to a dimension in a direction perpendicular to an axial direction in which the electrical isolation switch is set.

The manner of coupling between the first socket housing 12 and the first carrier housing 11 is not limited to this application. For example, the first receiving housing 12 may be detachably disposed on the first carrying housing 11, and for example, the first receiving housing 12 may be integrally coupled to the first carrying housing 11.

In this embodiment, the first magnet 31 may be disposed below the first movable contact conductive element 141 and above the second movable contact conductive element 241 in the axial direction set by the electrical isolation switch, and may also be disposed outside the first movable contact conductive element 141 and the second movable contact conductive element 241 in the radial direction set by the electrical isolation switch, which is not limited in this application.

It should be appreciated that the multi-layer switching layer structure 50 of the electrical isolation switch may also include a greater number of switching layers. A second magnetic component 80 comprising at least one common magnet may be arranged between the second switching layer 20 and the other switching layer adjacent thereto, i.e. the third switching layer. The third switching layer has a third mounting cavity, the common magnet between the second switching layer 20 and the third switching layer has two opposite magnetic poles, one of which extends into the second mounting cavity 210, and the other of which extends into the third mounting cavity, and corresponds to the movement path of the second movable contact conductive element 241 of the second switching layer 20 and the movement path of the third movable contact conductive element of the third switching layer.

Accordingly, in one specific example of the present application, the second bearing housing 21 of the second switching layer 20 has a second mounting groove 212 concavely formed at a bottom surface thereof for receiving and coating a common magnet between the second switching layer 20 and the third switching layer. The portion of the second carrier housing 21 that encloses the common magnet between the second switch layer 20 and the third switch layer is made of an insulating material so as to remain insulated from the second movable contact conductive assembly 24.

The second switching layer 20 further comprises a second receiving housing 22 located between the second carrying housing 21 and the third switching layer, the second receiving housing 22 at least partially overlapping the third switching layer in an axial direction set by the electrical isolation switch. The second receiving case 22 has a second groove 221 concavely formed at a top surface thereof and corresponding to the second mounting groove 212 for receiving and covering the common magnet between the second switching layer 20 and the third switching layer. The portion of the second socket housing 22 that encloses the common magnet between the second switch layer 20 and the third switch layer is made of an insulating material such that the common magnet between the second switch layer 20 and the third switch layer remains insulated from the third movable contact conductive assembly of the third switch layer.

It is worth mentioning that the arc generated in the switching layer between the switching layer at the topmost layer and the switching layer at the bottommost layer of the electric isolating switch can be influenced not only by the action of the common magnet between the switching layer and the switching layer above the switching layer, but also by the action of the common magnet between the switching layer and the switching layer below the switching layer, so that the arc extinguishing capability of the isolating switch can be further improved. For example, the arc generated in the second switching layer 20 can be subjected to not only the common magnet (e.g., the first magnet 31) between the second switching layer 20 and the first switching layer 10 located thereon, but also the common magnet between the second switching layer 20 and the third switching layer located thereunder. Of course, a top cover may be disposed on top of the topmost switching layer, that is, the first switching layer 10, and a magnet disposed above the first movable contact conductive assembly 14 may be disposed on the top cover, so that an arc generated in the first switching layer 10 may be acted upon by a common magnet shared by the first switching layer 10 and the second switching layer 20 disposed on the bottom of the first switching layer 10, and may be acted upon by a magnet disposed on top of the first switching layer 10. The magnets may be arranged at the bottom of the lowermost switching layer, so that the arc generated in the lowermost switching layer may be subjected to both the action of a common magnet between the lowermost switching layer and the switching layer above it and the action of a magnet at the bottom portion thereof.

It is also worth mentioning that the requirements of different application scenarios on the breaking capacity of the electrical isolating switch are different, and to a certain extent, the breaking capacity of the electrical isolating switch is positively correlated with the arc extinguishing capacity, namely, the stronger the arc extinguishing capacity is, the stronger the breaking capacity is. In the prior art, for the electrical isolating switch with higher requirements on breaking capacity, each switch layer is provided with a magnet, for the electrical isolating switch with lower requirements on breaking capacity, the interlayer is provided with a magnet, for example, magnets are arranged in the first switch layer and the third switch layer, and magnets are not arranged in the second switch layer and the fourth switch layer. It should be noted that there is a difference between the breaking performance of the switching layer where the magnet is not provided and the breaking performance of the switching layer where the magnet is provided, however, it is unclear to the customer which layer is provided with the magnet and each switching layer is used randomly during use, which causes fluctuations in the switching performance. Even causing a non-predictable collective accident, causing unnecessary economic losses and disputes, many customers still remain unaware of the root of the problem.

As described above, the breaking performance of the switching layer without the magnet is greatly different from that of the switching layer with the magnet, such a performance difference and the randomness of the use of the switching layers of each layer greatly increase the use risk, and in the conventional electric isolating switch, the magnets of the switching layers of each layer exert the arc extinguishing effect independently of each other, and once the switching layer without the magnet is used, the risk of causing an accident is great.

Based on this, the application proposes to improve the performance stability and the safety in use of the electrical disconnector as a whole by improving the uniformity of the breaking capacity of the switching layers of the layers. Specifically, first, whether it is an electrical disconnector having a low breaking capacity requirement or an electrical disconnector having a high breaking capacity requirement, each switching layer is provided with a magnet to improve the uniformity of the breaking capacity of each switching layer. Secondly, if the same magnetic component as the electric isolating switch with higher requirements on breaking capacity is configured for the electric isolating switch with low requirements on breaking capacity, a certain amount of large materials are used, so that resource waste is caused to a certain extent, and the cost is higher. The performance stability of the electrical disconnector is sacrificed if the magnets are arranged in a conventional manner in the spacer. The inventors of the present application propose to use a permanent magnet and soft magnet combined isomerism magnet 70 to balance the contradiction between switching performance stability and cost. For the electrical isolation switch with higher requirements on breaking capacity, the magnet is usually a permanent magnet, so that for the electrical isolation switch with lower requirements on breaking capacity, the volume of the permanent magnet can be reduced, and the soft magnet with lower cost, such as a ferromagnetic substance, is used for replacing the permanent magnet, so that the requirements on breaking performance can be met, and the cost can be saved. The electric isolating switch with different breaking capacities can be formed by controlling the volume ratio between the permanent magnet and the soft magnet.

Preferably, in the hetero magnet 70, a soft magnet is sandwiched between at least two permanent magnets to secure the magnetism of the soft magnet. That is, as shown in fig. 8, the hetero magnet 70 includes a permanent magnet portion 71 and a soft magnet portion 72, and it is preferable that the hetero magnet 70 includes at least two permanent magnet portions 71 and a soft magnet portion 72 interposed between at least two of the permanent magnet portions 71.

In some embodiments of the present application, at least one magnet is implemented as the hetero magnet 70, for example, the first magnet 31 is implemented as the hetero magnet 70, and the first magnet 31 includes two permanent magnet portions 71 and a soft magnet portion 72 sandwiched between the two permanent magnet portions 71.

It should be noted that, in the embodiment of the present application, the electrical isolation switch is configured with a plurality of magnets for each switch layer, and there is a difference between magnetic fields formed by at least two magnets, so that the electric arc is bent in different manners to prolong the movement path of the electric arc, and accelerate the breaking and extinguishing of the electric arc.

Accordingly, in the embodiment of the present application, the first magnetic assembly 30 further includes a second magnet 32 disposed on the movement path of the first movable contact conductive element 141 and having a certain distance from the first magnet 31. The first magnetic field generated by the first magnet 31 is different from the second magnetic field generated by the second magnet 32, for example, the magnetic field strength of the first magnetic field is different from the magnetic field strength of the second magnetic field, or the magnetic field direction of the first magnetic field is different from the magnetic field direction of the second magnetic field.

The direction of the first magnetic field generated by the first magnet 31 and the direction of the second magnetic field generated by the second magnet 32 can be adjusted by adjusting the magnetic pole orientations of the first magnet 31 and the second magnet 32. In the embodiment of the present application, the magnetic pole orientations of the first magnet 31 and the second magnet 32 are different.

Specifically, the first magnet 31 has a first magnetic pole facing the first movable contact conductive assembly 14 and a second magnetic pole opposite to the first magnetic pole, and the second magnet 32 has a third magnetic pole facing the first movable contact conductive assembly 14 and a fourth magnetic pole opposite to the third magnetic pole. In a specific example of the present application, the magnetic poles of the first magnet 31 and the second magnet 32 are opposite in orientation, wherein the first magnetic pole of the first magnet 31 and the third magnetic pole of the second magnet 32 are opposite in magnetism, the second magnetic pole of the first magnet 31 and the fourth magnetic pole of the second magnet 32 are opposite in magnetism, and an angle between the magnetic pole direction of the first magnet 31 and the magnetic pole direction of the second magnet 32 is equal to 180 °. In other specific examples of the present application, the angle between the magnetic pole direction of the first magnet 31 and the magnetic pole direction of the second magnet 32 may be greater than 0 ° and equal to or less than 90 °, or greater than 90 ° and less than 180 °. In this embodiment of the present application, the direction of the strongest N pole point of the magnet pointing to the strongest S pole point is the magnetic pole direction of the magnet, where the strongest N pole point is the point of strongest magnetism in the N poles of the magnet, and the strongest S pole point is the point of strongest magnetism in the S poles of the magnet.

In this embodiment, the first magnetic assembly 30 further includes a third magnet 33 adjacent to the first magnet 31, where a difference exists between a third magnetic field generated by the third magnet 33 and a first magnetic field generated by the first magnet 31, so that the third magnetic field and the first magnetic field deflect the arc in different modes, and further bend the arc. For example, the magnetic field strength of the first magnetic field is different from the magnetic field strength of the third magnetic field, or the magnetic field direction of the first magnetic field is different from the magnetic field direction of the third magnetic field.

Specifically, the magnetic field direction of the first magnetic field generated by the first magnet 31 and the magnetic field direction of the third magnetic field generated by the third magnet 33 may be adjusted by adjusting the magnetic pole orientations of the first magnet 31 and the third magnet 33. In the embodiment of the present application, the magnetic poles of the first magnet 31 and the third magnet 33 are oriented differently, and the magnetic poles of the second magnet 32 and the third magnet 33 are oriented identically.

Specifically, the third magnet 33 has a fifth magnetic pole facing the movable contact conductive assembly and a sixth magnetic pole opposite to the fifth magnetic pole. In a specific example of the present application, the first magnetic pole of the first magnet 31 is opposite to the fifth magnetic pole of the third magnet 33, the third magnetic pole of the second magnet 32 is the same as the fifth magnetic pole of the third magnet 33, an angle between the magnetic pole direction of the first magnet 31 and the magnetic pole direction of the third magnet 33 is equal to 180 °, an angle between the magnetic pole direction of the first magnet 31 and the magnetic pole direction of the third magnet 33 is greater than 0 ° and equal to or less than 90 °, or greater than 90 ° and less than 180 °, and an angle between the magnetic pole direction of the second magnet 32 and the magnetic pole direction of the third magnet 33 is greater than 0 ° and equal to or less than 90 °, or greater than 90 ° and less than 180 °.

In the embodiment of the present application, the first magnetic assembly 30 further includes a fourth magnet 34 adjacent to the third magnet 33, and the magnetic poles of the third magnet 33 are oriented differently. In a specific example of the present application, the magnetic pole orientation of the fourth magnet 34 is opposite to the magnetic pole orientation of the third magnet 33.

It should be understood that the magnetic pole orientation of the third magnet 33 may be the same as the magnetic pole orientation of the first magnet 31. The magnetic pole orientation of the fourth magnet 34 may be the same as the magnetic pole orientation of the third magnet 33. It should also be appreciated that the first magnetic assembly 30 may also include a greater number of magnets.

Preferably, the arrangement mode of each magnet and the shape of each magnet are consistent with the movement path of the movable contact conductive element of the switch layer where each magnet is located, so as to cover the movement range of the electric arc as much as possible. In a specific example of the present application, the first magnet 31, the second magnet 32, the third magnet 33, and the fourth magnet 34 are arranged in an arc shape, and the first magnet 31, the third magnet 33, and the fourth magnet 34 are sector magnets. Of course, the arrangement of the magnets and the shape of the magnets may not completely coincide with the movement path of the movable contact conductive element of the switching layer in which the magnets are located. For example, in this specific example, the second magnet 32, which corresponds to the first static contact conductive element 13, is a circular magnet.

In the embodiment of the present application, at least some of the first magnet 31, the second magnet 32, the third magnet 33, and the fourth magnet 34 extend from the first switch layer 10 to the second switch layer 20, and at least partially overlap with the second switch layer 20, respectively, in the axial direction set by the electrical isolation switch. For example, in one specific example of the present application, the first magnet 31, the third magnet 33, and the fourth magnet 34 extend from the first switching layer 10 to the second switching layer 20, and the second magnet 32 is located at the bottom of the first switching layer 10 and has no portion overlapping with the second switching layer 20, i.e., does not extend to the second switching layer 20.

In this specific example, as shown in fig. 4 and 5, the first bearing housing 11 has a plurality of first mounting grooves 112 concavely formed at a bottom surface thereof. The first magnet 31, the third magnet 33 and the fourth magnet 34 are respectively and fittingly mounted to the plurality of first mounting grooves 112, and the plurality of first mounting grooves 112 may be spaced apart from each other or may communicate with each other. The first carrier housing 11 further has a first fitting groove 111 concavely formed at a top surface thereof, the second magnet 32 is fittingly mounted to the first fitting groove 111, the second magnet 32 may protrude from the first fitting groove 112, and a height dimension of the second magnet 32 is equal to or greater than a depth dimension of the first fitting groove 111.

Accordingly, in this specific example, the second magnetic assembly 80 between the second switching layer 20 and the third switching layer includes a fifth magnet 81, a sixth magnet 82, a seventh magnet 83, and an eighth magnet 84, and the second bearing housing 21 has a plurality of second mounting grooves 212 concavely formed at a bottom surface thereof. The fifth magnet 81, the seventh magnet 83, and the eighth magnet 84 are fittingly mounted to the second mounting groove 212. The second bearing housing 21 further has a second fitting recess 211 concavely formed at a top surface thereof, and the sixth magnet 82 is fittingly mounted to the second fitting recess 211.

It should be noted that, in the embodiment of the present application, not only the arc is elongated by the magnet to achieve arc extinction, but also the arc extinguishing groove 40 is configured for the deflected arc on the basis of the arc extinction by the magnet, the arc extinguishing groove 40 is disposed on the deflection path of the arc, and the arc entering the arc extinguishing groove 40 can be forced to be thinned and lengthened based on the "narrow slit principle" so as to accelerate the breaking and extinguishing of the arc, in this way, the arc extinguishing capability of the electrical isolating switch is enhanced.

In the embodiment of the present application, as shown in fig. 6, the carrying case of each switching layer has at least one arc extinguishing groove 40 concavely formed therein, and the arc extinguishing groove 40 includes a first arc extinguishing groove 41 located at the outer side of the magnetic assembly and a second arc extinguishing groove 42 located at the inner side of the magnetic assembly. Preferably, the first arc extinguishing groove 41 and/or the second arc extinguishing groove 42 extend along the movement path of the movable contact conductive element.

In some embodiments of the present application, the arc chute 40 further includes a third arc chute 43 located in the magnetic assembly at a side of the magnet in a circumferential direction set by the multilayer switching layer structure 50, for example, the first magnet 31 and the second magnet 32 are arranged along the circumferential direction set by the multilayer switching layer structure 50, and the third arc chute 43 is located between the first magnet 31 and the second magnet 32; for another example, the first magnet 31 and the third magnet 33 are arranged along the circumferential direction set by the multi-layer switching layer structure 50, and the third arc extinguishing slot 43 is located between the first magnet 31 and the third magnet 33; for another example, the third magnet 33 and the fourth magnet 34 are arranged along the circumferential direction set by the multi-layer switching layer structure 50, and the third arc extinguishing slot 43 is located between the third magnet 33 and the fourth magnet 34.

It should be noted that in some embodiments of the present application, the electrical isolation switch is further provided with other structures for avoiding arc interference. For example, the first carrying case 11 has a first arc spraying port 113 communicating with the arc extinguishing groove 40, the first arc spraying port 113 communicating with the arc extinguishing groove 40 and extending to the outer surface of the first carrying case 11, so that the arc generated in the first switching layer 10 can be guided to the outside of the first carrying case 11 through the first arc spraying port 113; the second carrying case 21 has a second arc spraying opening 213 connected to the arc extinguishing groove 40, and the second arc spraying opening 213 is connected to the arc extinguishing groove 40 and extends to the outer surface of the second carrying case 21, so that the arc generated in the second switching layer 20 can be guided to the outside of the second carrying case 21 through the second arc spraying opening 213.

In an embodiment of the present application, as shown in fig. 1 and 2, the electrical isolation switch further includes an actuation control assembly 200 operatively connected to at least one of the switch layers in the multi-layer switch layer structure 50, the actuation control assembly 200 being configured to control the switching of the at least one switch layer between an on state and an off state.

In a specific example of the present application, the movable contact conductive assembly of each switching layer further includes a rotating member to which the movable contact conductive element is mounted. The actuation control assembly 200 includes a transmission member 60 drivingly connected to the rotating members of each switching layer, and when the transmission member 60 is driven to move, the rotating members of each switching layer are driven to rotate, so that the movable contact conductive element mounted on the rotating member rotates relative to the static contact conductive element, and the switching layer is switched between the on state and the off state. Specifically, in this particular example, the first movable contact conductive assembly 14 of the first switch layer 10 further includes a first rotating member 142, the first movable contact conductive element 141 is mounted to the first rotating member 142, and the second movable contact conductive assembly 24 of the second switch layer 20 further includes a second rotating member 242, and the second movable contact conductive element 241 is mounted to the second rotating member 242. The first rotating member 142 has a slot, the second rotating member 242 has a slot corresponding to the first rotating member 142, and the driving member 60 is engaged in the slots of the first rotating member 142 and the second rotating member 242, in which way the driving member 60 is drivingly connected to the first rotating member 142 of the first switching layer and the second rotating member 242 of the second switching layer 20.

In other specific examples of the present application, the actuation control component 200 may control the state switching of the switching layer in other manners, which is not limited in this application.

In summary, an electrical disconnector and an arc extinguishing method according to embodiments of the present application are illustrated, where the electrical disconnector uses a magnet arc extinguishing scheme to extinguish an arc, and a common magnet is configured for two adjacent switching layers, where a magnetic field formed by the common magnet can simultaneously act on arcs generated in the two adjacent switching layers, so as to enhance an arc extinguishing capability of the electrical disconnector.

The present application and its embodiments have been described above with no limitation, and the actual structure is not limited to this, but is only one of the embodiments of the present application shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution are not creatively devised without departing from the gist of the present application, and all the structural manners and the embodiments are considered to be within the protection scope of the present application.

Claims (17)

1. An electrical disconnector, comprising:

a multi-layer switching layer structure; and

An actuation control assembly operatively connected to the multi-layer switch layer structure;

the multilayer switching layer structure comprises:

a first switching layer comprising: a pair of first static conductive elements and a first movable conductive element movable relative to the pair of first static conductive elements, the first movable conductive element being adapted to be moved to selectively engage or disengage the pair of static conductive elements;

a second switching layer comprising: a pair of second stationary conductive elements and a second movable conductive element movable relative to the pair of second stationary conductive elements, the second movable conductive elements being adapted to be moved to selectively engage or disengage the pair of second stationary conductive elements; and

the first magnetic component is arranged between the first switch layer and the second switch layer.

2. The electrical disconnector of claim 1 in which the first switching layer has a first mounting cavity in which the first movable and stationary conductive elements are mounted, the second switching layer has a second mounting cavity in which the second movable and stationary conductive elements are mounted, and the first magnetic assembly comprises a first magnet in adjacent spaces of the first and second mounting cavities.

3. The electrical disconnector of claim 2 in which the first magnet has opposed first and second poles, the first pole of the first magnet extending into the first mounting cavity and the second pole of the first magnet extending into the second mounting cavity.

4. The electrical disconnector according to claim 3 in which the first magnet corresponds to both the path of movement of the first movable contact conductive member and the path of movement of the second movable contact conductive member.

5. The electrical disconnector of claim 4 in which each of the first static contact conductive members has a first static contact conductive end and each of the second static contact conductive members has a second static contact conductive end, the first and second static contact conductive ends corresponding to each other in an axial direction in which the electrical disconnector is set.

6. The electrical disconnector according to claim 5 in which a central line between a pair of first static contact conductive ends of a pair of first static contact conductive members and a central line between a second static contact conductive ends of a pair of second static contact conductive members are parallel to each other.

7. The electrical disconnector of claim 4 in which the first magnet is arranged below the first movable contact conductive member and above the second movable contact conductive member.

8. The electrical disconnector of claim 4 in which the first magnet is arranged outside of the first and second movable contact conductive elements.

9. The electrical disconnector of claim 2 in which the first magnet comprises a permanent magnet portion and a soft magnet portion.

10. The electrical disconnector according to claim 9 in which the first magnet comprises two permanent magnet portions and a soft magnet portion sandwiched between the two permanent magnet portions.

11. The electrical disconnector of claim 2, wherein the first switching layer further comprises a first carrier housing for mounting the first stationary and movable contact conductive elements, at least a portion of the first magnet being encased in the first carrier housing.

12. The electrical disconnector of claim 11 in which the first carrier housing has a first mounting recess concavely formed in a bottom surface thereof, the first magnet being mounted to the first mounting recess.

13. The electrical disconnector of claim 12 in which the first magnet protrudes downwardly from the first mounting recess.

14. The electrical isolation switch of claim 13 wherein said first switch layer further comprises a first socket housing located between said first carrier housing and said second switch layer, said first socket housing having a first slot concavely formed in a top surface thereof and corresponding to said mounting recess, said first magnet being encased within said mounting recess and said first slot.

15. The electrical disconnector according to claim 14 in which the first magnet is kept insulated with respect to the first and second movable contact conductive elements.

16. The electrical disconnector of claim 2 in which the first magnetic assembly further comprises a second magnet disposed in the path of movement of the first movable contact conductive member and having a distance from the first magnet, the first magnet being oppositely directed to the second magnet.

17. The electrical isolation switch of claim 16 wherein said first magnetic assembly further comprises a third magnet adjacent to said first magnet, said first magnet having a magnetic pole facing opposite to said second magnet, said second magnet being the same as said third magnet in magnetic pole facing opposite to said third magnet.

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