Contact system and rotary disconnecting switch
By introducing a spacer layer into the contact system to space the arc generated by two adjacent contact layers, the problem of easy short circuit between multiple contact layers in the prior art is solved, and the safety performance of the rotary isolating switch is improved.
Patent Information
- Application Number
- CN202420353197.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-23
AI Technical Summary
In the existing contact systems, short circuits are prone to multiple contact layers, which reduces the safety performance of the rotary isolating switch.
A spacer layer is provided between two adjacent contact layers, which is used to space the arcs generated by two adjacent contact layers to prevent the arc from short-circuiting the two adjacent contact layers.
Through the design of the spacer layer, the arc is prevented from diffusing from one contact layer to the other contact layer, and the two adjacent contact layers are prevented from being shorted by the arc, improving the safety performance of the contact system.
Smart Images
Figure CN222507437U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of power distribution equipment, and in particular to a contact system and a rotary isolating switch. Background Art
[0002] The rotary isolating switch includes an operating system and a contact system connected to each other. The operating system includes a knob and a shaft module that are in contact with each other. The contact system includes multiple stacked contact layers, each of which is provided with a moving contact and a stationary contact. When the knob is turned, the knob drives the shaft module to rotate, and when the shaft module rotates, the moving contacts in the multiple contact layers are driven to rotate, so that the moving contacts are in contact with or separated from the stationary contacts.
[0003] However, based on the structure of the existing contact system, when the moving contacts and the stationary contacts in the multiple contact layers are separated, the arc generated between the moving contacts and the stationary contacts can easily short-circuit the multiple contact layers, thereby reducing the safety performance of the rotary disconnector. Utility Model Content
[0004] In view of this, the embodiments of the present application provide a contact system and a rotary isolating switch to solve the problem of easy short circuit between multiple contact layers in the existing contact system, thereby ensuring the safety performance of the rotary isolating switch.
[0005] In a first aspect, an embodiment of the present application provides a contact system, which includes at least two contact layers and a spacing layer. The at least two contact layers are stacked, and the at least two contact layers can generate an arc. The spacing layer is arranged between two adjacent contact layers. The spacing layer is used to separate the arcs generated by the two adjacent contact layers to prevent the arcs from short-circuiting the two adjacent contact layers.
[0006] Considering the technical problem that arcs in the prior art easily short-circuit multiple contact layers, the embodiment of the present application sets a spacing layer between two adjacent contact layers so that the spacing layer can space the arcs generated by the two adjacent contact layers, thereby preventing the arc ejected from one contact layer from spreading to another contact layer, and preventing the two arcs generated by the two adjacent contact layers from being connected to each other, thereby preventing the two adjacent contact layers from being short-circuited by the arc. On the basis that the two adjacent contact layers will not be short-circuited by the arc, the safety performance of the contact system of the embodiment of the present application can be guaranteed.
[0007] In a possible design, the spacing layer includes a spacing frame, which is connected between two adjacent contact layers. The spacing frame is used to increase the distance between the two adjacent contact layers to space the arcs.
[0008] Through the above scheme, the spacing frame can increase the distance between two adjacent contact layers, so that when an arc is generated in the two adjacent contact layers, the distance from the arc generated from one contact layer to the other contact layer is increased, and the distance from the arc generated from one contact layer to the arc generated from the other contact layer is increased. On the basis of the increase in the distance from the arc generated from one contact layer to the other contact layer, or the increase in the distance from the arc generated from one contact layer to the arc generated from the other contact layer, the two adjacent contact layers are not easily short-circuited by the arc.
[0009] In a possible design, the spacing layer further includes an inner partition plate, which is connected to the inner wall of the spacing frame and is used to separate the arcs that diffuse into the spacing frame.
[0010] Through the above scheme, the inner partition can block the two arcs that diffuse into the spacing frame when the two arcs approach each other, so that the two arcs change their diffusion direction and cannot conduct with each other, thereby preventing the two arcs from short-circuiting two adjacent contact layers.
[0011] In a possible design, the spacing layer further includes an outer spacing plate connected to an outer wall of the spacing frame, and the outer spacing plate is used to separate the arc that spreads to the outside of the spacing frame.
[0012] Through the above scheme, the outer partition can block the two arcs in the process of diffusing toward the spacing frame, so that the two arcs change the diffusion direction and cannot be conductive to each other, or the arc ejected from one contact layer changes the diffusion direction and cannot diffuse into another contact layer, thereby preventing the arc from short-circuiting two adjacent contact layers.
[0013] In a possible design, the outer partition is fixedly connected to the outer wall of the spacing frame. Alternatively, the outer partition is rotatably connected to the outer wall of the spacing frame.
[0014] When the outer partition is fixedly connected to the outer wall of the spacing frame, the outer partition is not easy to be separated from the outer wall of the spacing frame during transportation or actual use, which is conducive to ensuring the arc blocking effect of the outer partition.
[0015] When the outer partition is rotatably connected to the outer wall of the spacing frame, during transportation, the outer partition can be rotated to make the plate surface parallel to the stacking direction of the contact layer to reduce the space occupied by the contact system. During actual use, the outer partition can be rotated to make the plate surface intersect with the stacking direction of the contact layer to ensure the outer partition's arc blocking effect.
[0016] In a possible design, a non-zero angle is set between the surface where the outer partition is located and the stacking direction of the contact layer.
[0017] In a possible design, the spacing layer includes a separation plate, which is connected between two adjacent contact layers and is used to separate arcs generated by the two adjacent contact layers.
[0018] Through the above scheme, the isolation plate can increase the distance between two adjacent contact layers, so that when an arc is generated in the two adjacent contact layers, the distance that the arc generated in one contact layer diffuses to the other contact layer is increased, or the distance that the arc generated in one contact layer diffuses to the time when the arc is connected with the arc generated in the other contact layer is increased. On the basis of the increase in the distance that the arc generated in one contact layer diffuses to the other contact layer, or the increase in the distance that the arc generated in one contact layer diffuses to the time when the arc is connected with the arc generated in the other contact layer, the two adjacent contact layers are not easily short-circuited by the arc.
[0019] In addition, the isolation plate can also block the two arcs between two adjacent contact layers, causing the two arcs to move away from each other, thereby preventing the two adjacent contact layers from being short-circuited by the arcs.
[0020] In a possible design, in the stacking direction of the contact layers, the projections of at least two contact layers overlap with the projection of the isolation plate. Alternatively, in the stacking direction of the contact layers, the projections of at least two contact layers fall within the projection range of the isolation plate.
[0021] When the projections of at least two contact layers coincide with the projection of the isolation plate, the isolation plate can increase the distance between two adjacent contact layers so that when an arc is generated between two adjacent contact layers, the distance that the arc generated by one contact layer diffuses to another contact layer is increased, or the distance that the arc generated by one contact layer diffuses to the point where it is connected to the arc generated by another contact layer is increased.
[0022] When the projections of at least two contact layers fall within the projection range of the isolation plate, the isolation plate can not only increase the distance between two adjacent contact layers, but also block the two arcs generated by the two adjacent contact layers, so that the two arcs move away from each other.
[0023] In a second aspect, an embodiment of the present application further provides a rotary isolating switch, which includes an operating system and the contact system of the first aspect, wherein the operating system is connected to the contact system and is used to control the connection or disconnection of the contact system.
[0024] On the basis that two adjacent contact layers in the contact system of the first aspect will not be short-circuited, the rotary isolating switch in the embodiment of the present application is also not prone to short-circuiting, and the safety performance of the rotary isolating switch can also be guaranteed.
[0025] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0027] Figure 1 Schematic diagram of a contact system in some embodiments of the present application.
[0028] Figure 2 This is a first schematic diagram of a spacer layer in some embodiments of the present application.
[0029] Figure 3 This is a second schematic diagram of the spacer layer in some embodiments of the present application.
[0030] Figure 4 This is a third schematic diagram of the spacing layer in some embodiments of the present application.
[0031] Figure 5 This is a fourth schematic diagram of a spacer layer in some embodiments of the present application.
[0032] Figure 6 This is a schematic diagram of a rotary isolating switch in some embodiments of the present application.
[0033] Description of reference numerals:
[0034] 1- Rotary isolating switch;
[0035] 11-contact system; 111-contact layer; 112-spacer layer; 112a-spacer frame; 112b-inner partition; 112c-outer partition; 112d-isolator;
[0036] 12- Operating system. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.
[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0040] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the present application. For example, in the description of the present application, the directions or positional relationships indicated by the terms "center", "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.
[0041] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.
[0042] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap-on or snap-fit connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0043] The contact system in the rotary disconnector usually includes a plurality of stacked contact layers, each of which is provided with a moving contact, a stationary contact, a wiring port and an arc spray port. The stationary contact is arranged on the rotation path of the moving contact, and the moving contact can contact or separate with the stationary contact when the moving contact rotates. The wiring port is arranged close to the stationary contact, and a wiring screw is arranged at the wiring port; the wiring screw can fix the external wire and the stationary contact together, and electrically connect the external wire and the stationary contact. The arc spray port and the wiring port are arranged on the same surface of the contact layer, and the arc spray port is arranged away from the wiring port; the arc spray port is used to discharge the arc generated when the moving contact is separated from the stationary contact.
[0044] For two adjacent contact layers, in order to avoid interference between two external wires, the wiring port of one contact layer is usually set to be close to the arc spray port of another contact layer. However, based on the above-mentioned setting of adjacent contact layers, in the on-off analysis and life test of the contact system, as well as in the actual application of the contact system, the inventor found that two adjacent contact layers are easily short-circuited by electric arcs. Specifically, the arc ejected from the arc spray port of one contact layer will spread to the wiring port of another contact layer, and the arc will adhere to the wiring screws or static contacts, causing a short circuit between the two contact layers. Alternatively, the arc generated by one contact layer will approach the arc generated by another contact layer and conduct, causing a short circuit between the two adjacent contact layers.
[0045] Based on this, an embodiment of the present application provides a contact system, which uses a spacing layer to separate the arc generated by two adjacent contact layers to prevent the arc from short-circuiting the two adjacent contact layers.
[0046] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.
[0047] The present application embodiment provides a contact system 11, see Figure 1The contact system 11 includes at least two contact layers 111 and a spacing layer 112. The at least two contact layers 111 are stacked, and the at least two contact layers 111 can generate an arc. The spacing layer 112 is arranged between two adjacent contact layers 111. The spacing layer 112 is used to space the arc generated by the two adjacent contact layers 111 to prevent the arc from short-circuiting the two adjacent contact layers 111.
[0048] In this embodiment, when an arc is generated in two adjacent contact layers 111, the spacing layer 112 can space the arcs generated in the two adjacent contact layers 111 to prevent the arc ejected from one contact layer 111 from spreading to the other contact layer 111, and prevent the two arcs generated in the two adjacent contact layers 111 from approaching each other and conducting, thereby preventing the two adjacent contact layers 111 from being short-circuited by the arc. On the basis that the two adjacent contact layers 111 will not be short-circuited by the arc, the safety performance of the contact system 11 in the embodiment of the present application can be guaranteed.
[0049] Among them, there are two forms of arc spacing by the spacing layer 112: one is to increase the distance between two adjacent contact layers 111, so that the distance from the arc ejected from one contact layer 111 to the other contact layer 111 is increased, and the distance from the arc ejected from one contact layer 111 to the arc ejected from the other contact layer 111 is increased; the other is to block the two arcs ejected from two adjacent contact layers 111 to change the diffusion direction of the two arcs so that the two arcs will not conduct to each other.
[0050] Specifically, the structure and size of each contact layer 111 can be completely the same, and the projection of each contact layer 111 can overlap or not overlap in the stacking direction of the contact layer 111. For example, when the projections of each contact layer 111 overlap, it is convenient to make the positions of the rotation centers of the moving contacts in each contact layer 111 overlap with each other, thereby facilitating the synchronous rotation of multiple moving contacts to contact or separate with the static contact. In addition, the overall appearance of the contact system 11 will be more regular and coordinated.
[0051] The spacer layer 112 may be made of insulating material to prevent two arcs generated by two adjacent contact layers 111 from being conducted by the spacer layer 112. The insulating material may be rubber or plastic, etc., which is not particularly limited in the embodiment of the present application.
[0052] When the spacer layer 112 is provided between two adjacent contact layers 111, the spacer layer 112 may be provided as one layer or multiple layers. When the spacer layer 112 is provided as one layer, the spacer layer 112 and the two contact layers 111 may be connected by means of a snap connection or a pin connection. When the spacer layer 112 is provided as multiple layers, the spacer layer 112 and the contact layer 11, as well as the spacer layer 112 and the spacer layer 112 may be connected by means of a snap connection or a pin connection, and the embodiment of the present application does not specifically limit this.
[0053] After the spacer layer 112 is connected to two adjacent contact layers 111, in the stacking direction of the contact layers 111, the projection of the spacer layer 112 can fall within the projection range of the contact layers 111, or the projection of the spacer layer 112 can overlap with the projection of the contact layers 111, or the projection of the spacer layer 112 can completely cover the projection of the contact layers 111. The embodiments of the present application do not make any special limitations on this.
[0054] In the above embodiments, the spacer layer 112 can be configured in various structural forms to space the arcs in various forms. For ease of understanding, the possible forms of the spacer layer 112 are described in detail below.
[0055] In some embodiments, see Figure 2 The spacing layer 112 includes a spacing frame 112a, and the spacing frame 112a is connected between two adjacent contact layers 111. The spacing frame 112a is used to increase the distance between the two adjacent contact layers 111 to space the arc.
[0056] In this embodiment, the spacing frame 112a can increase the distance between two adjacent contact layers 111, so that when an arc is generated in the two adjacent contact layers 111, the distance from the arc generated from one contact layer 111 to the other contact layer 111 is increased, and the distance from the arc generated from one contact layer 111 to the arc generated from the other contact layer 111 is increased. On the basis of the increase in the distance from the arc generated from one contact layer 111 to the other contact layer 111, or the increase in the distance from the arc generated from one contact layer 111 to the arc generated from the other contact layer 111, the two adjacent contact layers 111 are not easily short-circuited by the arc.
[0057] Specifically, in the stacking direction of the contact layer 111, the size of the spacing frame 112a can be set according to actual conditions. For example, when the contact layer 111 generates more arcs, the size of the spacing frame 112a can be set larger so that the distance between two adjacent contact layers 111 is relatively larger. On the contrary, when the contact layer 111 generates less arcs, the size of the spacing frame 112a can be set smaller so that the distance between two adjacent contact layers 111 is relatively smaller. In the stacking direction of the contact layer 111, the embodiment of the present application does not specifically limit the size of the spacing frame 112a.
[0058] In addition, the outer shape of the spacing frame 112a can be completely the same as the outer shape of the contact layer 111. For example, when the outer shape of the contact layer 111 is a rectangular parallelepiped, the outer shape of the spacing frame 112a can also be a rectangular parallelepiped. In this way, after the contact layer 111 and the spacing frame 112a are stacked, the overall outer shape of the contact system 11 will be more regular and coordinated.
[0059] Alternatively, the outer shape of the spacing frame 112a may be different from the outer shape of the contact layer 111. For example, when the outer shape of the contact layer 111 is a rectangular parallelepiped, the outer shape of the spacing frame 112a may be set to be cylindrical. The embodiment of the present application does not specifically limit the outer shape of the spacing frame 112a, as long as the spacing frame 112a can increase the distance between two adjacent contact layers 111.
[0060] In some embodiments, see Figure 3 On the basis of the above-mentioned embodiment, the spacer layer 112 further includes an inner spacer 112b, which is connected to the inner wall of the spacer frame 112a, and is used to space the arc diffused into the spacer frame 112a.
[0061] The two arcs generated by the two adjacent contact layers 111 may diffuse into the spacing frame 112 a along the gap between the contact layers 111 , and be mutually conductive in the spacing frame 112 a , causing a short circuit between the two adjacent contact layers 111 .
[0062] Based on this, in this embodiment, the inner partition 112b can block the two arcs that diffuse into the spacing frame 112a when the two arcs approach each other, so that the two arcs change their diffusion direction and cannot conduct to each other, thereby preventing the two arcs from short-circuiting the two adjacent contact layers 111.
[0063] Specifically, the shape of the inner partition 112b can be adapted to the shape of the spacing frame 112a. For example, when the outer shape of the spacing frame 112a is set to be a rectangular parallelepiped, the inner partition 112b can be set to be a rectangular plate. When the outer shape of the spacing frame 112a is set to be cylindrical, the inner partition 112b can be set to be a circular plate.
[0064] In some embodiments, see Figure 4 On the basis of the above two embodiments, the spacer layer 112 further includes an outer spacer 112c, which is connected to the outer wall of the spacer frame 112a, and is used to space the arc that diffuses outside the spacer frame 112a.
[0065] The two arcs generated by the two adjacent contact layers 111 will be ejected out of the contact layer 111 and diffuse toward the spacing frame 112a. In the process of the two arcs diffusing toward the spacing frame 112a, the two arcs may approach each other and conduct with each other outside the spacing frame 112a; or, the arc ejected from one contact layer 111 may diffuse from the outside of the spacing frame 112a to the inside of the other contact layer 111, short-circuiting the two adjacent contact layers 111.
[0066] Based on this, in this embodiment, the outer partition 112c can block the two arcs in the process of diffusing to the outside of the spacing frame 112a, so that the two arcs change the diffusion direction and cannot conduct to each other, or change the direction of the arc ejected from one contact layer 111 when diffusing from the outside of the spacing frame 112a to the inside of the other contact layer 111, thereby preventing the arc from short-circuiting two adjacent contact layers 111.
[0067] Specifically, one or more outer partitions 112c may be provided. Exemplarily, when one outer partition 112c is provided, the one outer partition 112c may be connected to the middle portion of the outer wall of the spacing frame 112a. When multiple outer partitions 112c are provided, multiple outer partitions 112d may be arranged on the outer wall of the spacing frame 112a along the stacking direction of the contact layer 111. This embodiment does not specifically limit the specific number of the outer partitions 112d.
[0068] In the above embodiment, there may be many ways for the outer partition plate 112c to be connected to the outer wall of the spacing frame 112a. For ease of understanding, an exemplary description is given below.
[0069] In one example, the outer partition plate 112c is fixedly connected to the outer wall of the spacing frame 112a.
[0070] In this example, during transportation or actual use, the outer partition 112c is not easily collided and separated from the outer wall of the spacing frame 112a, which is conducive to ensuring the arc blocking effect of the outer partition 112c.
[0071] Specifically, when the outer partition plate 112c is fixedly connected to the spacing frame 112a, the two can be integrally formed or melted together.
[0072] In another example, the outer partition plate 112c is rotatably connected to the outer wall of the spacing frame 112a.
[0073] In this example, during transportation, the outer partition 112c can be rotated to a direction where the plate surface is parallel to the stacking direction of the contact layer 111, so as to reduce the space occupied by the contact system 11. During actual use, the outer partition 112c can be rotated to a direction where the plate surface intersects the stacking direction of the contact layer 111, so as to ensure the arc blocking effect of the outer partition 112c.
[0074] Specifically, when the outer partition plate 112c is rotatably connected to the outer wall of the spacing frame 112a, for example, one of the outer partition plate 112c and the outer wall of the spacing frame 112a can be provided with a connecting hole, and the other can be provided with a connecting column adapted to the connecting hole, and the outer partition plate 112c can be rotatably connected to the outer wall of the spacing frame 112a through the connecting hole and the connecting column.
[0075] In addition, in the above embodiment, a non-zero angle is set between the surface where the outer partition 112 c is located and the stacking direction of the contact layer 111 .
[0076] The non-zero angle means that the angle is greater than 0° and less than or equal to 90°. The angle can be 10°, 30°, 45°, 60° or 90°. The embodiment of the present application does not specifically limit the angle between the surface where the outer partition 112c is located and the stacking direction of the two contact layers 111.
[0077] For example, when one outer partition 112c is provided, the angle between the surface of the outer partition 112c and the stacking direction of the contact layer 111 can be set to 90°. The two plate surfaces of the outer partition 112c can block an arc respectively, so that the two arcs spread away from each other, and prevent the arc from short-circuiting two adjacent contact layers 111.
[0078] For another example, when two outer partitions 112c are provided, the angle between the surfaces where the two outer partitions 112c are located and the stacking direction of the contact layer 111 can be set to 45°, and the angle between the surfaces where the two outer partitions 112c are located can be set to 90°. The plate surface on the first outer partition 112c that is opposite to the second outer partition 112c can block an arc so that the arc diffuses in a direction away from the other arc. The plate surface on the second outer partition 112c that is opposite to the first outer partition 112c can block another arc so that the arc diffuses in a direction away from the one arc. In this way, the arc will not short-circuit two adjacent contact layers 111.
[0079] In some embodiments, see Figure 5 The spacing layer 112 includes a separation plate 112 d , which is connected between two adjacent contact layers 111 , and is used to separate arcs generated by two adjacent contact layers 111 .
[0080] In this embodiment, the isolation plate 112d can increase the distance between two adjacent contact layers 111, so that when an arc is generated in the two adjacent contact layers 111, the distance from the arc generated in one contact layer 111 to the other contact layer 111 is increased, or the distance from the arc generated in one contact layer 111 to the arc generated in the other contact layer 111 is increased. On the basis of the increase in the distance from the arc generated in one contact layer 111 to the other contact layer 111, or the increase in the distance from the arc generated in one contact layer 111 to the arc generated in the other contact layer 111, the two adjacent contact layers 111 are not easily short-circuited by the arc.
[0081] In addition, the isolation plate 112d can also block the two arcs between two adjacent contact layers 111, so that the two arcs move away from each other, thereby preventing the two adjacent contact layers 111 from being short-circuited by the arcs.
[0082] Specifically, the isolation plate 112d may be formed by a single plate or may be composed of a plurality of plates, which is not particularly limited in the embodiment of the present application.
[0083] In the stacking direction of the contact layer 111, the size of the isolation plate 112d can also be set according to actual conditions. For example, when the contact layer 111 generates more arcs, the size of the isolation plate 112d can be set larger so that the distance between two adjacent contact layers 111 is relatively larger. On the contrary, when the contact layer 111 generates less arcs, the size of the isolation plate 112d can be set smaller so that the distance between two adjacent contact layers 111 is relatively smaller. In the stacking direction of the contact layer 111, the embodiment of the present application does not specifically limit the size of the isolation plate 112d.
[0084] In addition, the shape of the isolation plate 112d can be completely the same as the shape of the contact layer 111. For example, when the shape of the contact layer 111 is a rectangular parallelepiped, the shape of the isolation plate 112d can also be a rectangular parallelepiped. In this way, after the contact layer 111 and the spacing layer 112 in the contact system 11 are stacked, the overall shape of the contact system 11 will be more regular and coordinated.
[0085] Alternatively, the shape of the isolation plate 112d may be different from the shape of the contact layer 111. For example, when the shape of the contact layer 111 is a rectangular parallelepiped, the shape of the isolation plate 112d may be set to be cylindrical. The embodiment of the present application does not specifically limit the shape of the isolation plate 112d, as long as the isolation plate 112d can increase the distance between two adjacent contact layers 111.
[0086] After the isolation plate 112d is disposed between two adjacent contact layers 111, the isolation plate 112d can be provided in various sizes in a direction perpendicular to the stacking direction of the contact layers 111. For ease of understanding, an exemplary description is given below.
[0087] In some examples, the projections of at least two contact layers 111 overlap with the projection of the isolation plate 112d in the stacking direction of the contact layers 111. That is, in multiple directions perpendicular to the stacking direction of the contact layers 111, the size of the isolation plate 112d is the same as the size of the contact layer 111.
[0088] In this way, the isolation plate 112d can increase the distance between two adjacent contact layers 111, so that when an arc is generated between two adjacent contact layers 111, the distance of the arc generated from one contact layer 111 spreading to another contact layer 111 is increased, or the distance of the arc generated from one contact layer 111 spreading to the arc generated from another contact layer 111 when it is connected is increased.
[0089] In addition, after the contact layer 111 and the isolation plate 112d in the contact system 11 are stacked, the overall appearance of the contact system 11 will be more regular and coordinated.
[0090] In other examples, in the stacking direction of the contact layers 111, the projections of at least two contact layers 111 fall within the projection range of the isolation plate 112d. That is, in at least part of the direction perpendicular to the stacking direction of the contact layers 111, the size of the isolation plate 112d may be larger than the size of the contact layer 111. For example, in the direction from the center of the contact layer 111 to the aforementioned wiring port or arc spray port, the size of the isolation plate 112d may be larger than the size of the contact layer 111.
[0091] In this way, the isolation plate 112d can not only increase the distance between two adjacent contact layers 111, but also block the two arcs generated by the two adjacent contact layers 111, so that the two arcs move away from each other.
[0092] In some embodiments, an intermediate connector (not shown in the figure) is further provided between two adjacent contact layers 111. The intermediate connector may include a first end and a second end. The first end of the intermediate connector is connected to a moving contact in one contact layer 111, and the second end of the intermediate connector is connected to a moving contact in another contact layer 111, so as to link the two moving contacts.
[0093] When the intermediate connector is located between two adjacent contact layers 111 , based on the different structures of the aforementioned spacing layer 112 , the intermediate connector can be configured in a variety of structural forms, and the intermediate connector and the spacing layer 112 can be configured in a variety of forms.
[0094] In one configuration, when the spacing layer 112 is configured as a spacing frame 112a, the intermediate connecting member may be configured as a prismatic shaft, and the prismatic shaft may pass through the inner cavity of the spacing frame 112a to facilitate linkage of the two moving contacts.
[0095] In another setting, see Figures 3 to 5 When the spacer layer 112 includes an inner partition 112b or the spacer layer 112 is configured as an isolation plate 112d, the intermediate connection member may be configured to include a rotating disk and a prismatic shaft, and the rotating disk may be sleeved on the side wall of the prismatic shaft with an interference fit. A through hole may be provided on the inner partition 112b or the isolation plate 112d, and the rotating disk may be embedded in the through hole and rotate in the through hole, so that the prismatic shaft can link the two moving contacts. The through hole may be a circular hole or a polygonal hole, and this embodiment of the application does not specifically limit this.
[0096] The present application also provides a rotary isolating switch 1, see Figure 6 The rotary isolating switch 1 comprises an operating system 12 and the aforementioned contact assembly contact system 11, and the operating system 12 is connected to the contact system 11. The operating system 12 is used to control the contact system 11 to be connected or disconnected.
[0097] The operating system 12 may be a prior art. Also, the operating system 12 may control the contact system 11 to be turned on or off in a manner that is a prior art, which will not be described in detail herein.
[0098] In this embodiment, on the basis that two adjacent contact layers 111 in the aforementioned contact system 11 will not short-circuit, the rotary isolating switch 1 of this embodiment will not short-circuit either, and the safety performance of the rotary isolating switch 1 can be guaranteed.
[0099] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A contact system, characterized in that: include: At least two contact layers, at least two of the contact layers are stacked, and at least two of the contact layers are capable of generating an arc; The spacing layer is arranged between two adjacent contact layers; the spacing layer is used to separate the arcs generated by the two adjacent contact layers to prevent the arcs from short-circuiting the two adjacent contact layers.
2. The contact system according to claim 1, characterized in that: The spacing layer comprises a spacing frame, the spacing frame is connected between two adjacent contact layers, and the spacing frame is used to increase the distance between the two adjacent contact layers to space the arcs.
3. The contact system according to claim 2, characterized in that: The spacing layer further includes an inner partition plate, which is connected to the inner wall of the spacing frame and is used to partition the arc diffused into the spacing frame.
4. The contact system according to claim 2 or 3, characterized in that: The spacing layer further includes an outer partition plate, which is connected to an outer wall of the spacing frame and is used to separate the arc that diffuses outside the spacing frame.
5. The contact system according to claim 4, characterized in that: The outer partition is fixedly connected to the outer wall of the spacing frame; or, The outer partition is rotatably connected to the outer wall of the spacing frame.
6. The contact system according to claim 4, characterized in that: A non-zero angle is provided between the surface where the outer partition is located and the stacking direction of the contact layer.
7. The contact system according to claim 1, characterized in that: The spacing layer comprises a separation plate, the separation plate is connected between two adjacent contact layers, and the separation plate is used to separate the arcs generated by the two adjacent contact layers.
8. The contact system according to claim 7, characterized in that In the stacking direction of the contact layers, the projections of at least two of the contact layers coincide with the projection of the isolation plate; or, In the stacking direction of the contact layers, projections of at least two of the contact layers fall within the projection range of the isolation plate.
9. A rotary isolating switch, characterized in that: It comprises an operating system and a contact system as claimed in any one of claims 1 to 8, wherein the operating system is connected to the contact system; and the operating system is used to control the connection or disconnection of the contact system.