Solid-sealed polar pole

Abstract

The utility model provides a solid-sealed polar pole, which comprises a vacuum arc-extinguishing chamber provided with a static conductive end and a movable conductive end which are respectively arranged at the top and the bottom of the vacuum arc-extinguishing chamber; the middle static contact, the connecting plate connected with the static conductive end, the contact plate connected with the contact knife, the connecting plate and the vacuum arc-extinguishing chamber are integrally poured to form an epoxy resin housing, so that an integral core part is formed, and the subsequent product quality is fundamentally ensured; the epoxy resin housing is provided with an upper chamber and a lower chamber, the upper chamber is internally provided with a vacuum arc-extinguishing chamber, the lower chamber comprises a first cavity located below the upper chamber and a second cavity located on the side of the first cavity, the first cavity is internally provided with an insulating pull rod connected with the movable conductive end, and the second cavity is internally provided with an outgoing line bus; and the outgoing bus is connected with the movable conductive end through flexible connection. And the epoxy resin housing is expanded outwards to form a second cavity for mounting an outgoing bus and a flexible connector, so that the pollution of micro dust is reduced, the safe insulation distance is increased, and a conductive part is excellently subjected to inter-phase insulation.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a sealed pole. Background Art

[0002] Outdoor high-voltage vacuum circuit breakers are high-voltage circuit breakers used in power systems. They use vacuum as the breaking medium and are installed and operated outdoors. They are primarily used in medium- and high-voltage power systems to protect electrical equipment from overcurrent, short circuits, and other faults.

[0003] The sealed pole is used in the main circuit of the high-voltage vacuum circuit breaker, usually to enclose a component of the vacuum interrupter, but other live parts are still exposed on the outside, which is easily contaminated by micro dust, thereby reducing the safe insulation distance and resulting in poor insulation performance. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of poor insulation performance in the prior art, thereby providing a sealed pole with good insulation performance.

[0005] To this end, the utility model provides a sealed pole, including a vacuum interrupter, an intermediate static contact and an epoxy resin cover, the vacuum interrupter having a static conductive end and a dynamic conductive end respectively arranged at the top and bottom thereof; the intermediate static contact having a connecting plate connected to the static conductive end, and a contact plate connected to the contact blade, the connecting plate and the vacuum interrupter are integrally cast to form an epoxy resin cover; the epoxy resin cover has an upper chamber and a lower chamber, the vacuum interrupter is installed in the upper chamber, the lower chamber includes a first chamber located below the upper chamber, and a second chamber located on the side of the first chamber, the first chamber is provided with an insulating pull rod connected to the dynamic conductive end, the second chamber is installed with an outgoing busbar, and the outgoing busbar is connected to the dynamic conductive end through a soft connection.

[0006] The contact plate is formed with a U-shaped slot for the contact blade to be inserted into.

[0007] A straight conductive spring is provided on the inner wall of the U-shaped slot, and the length extension direction of the straight conductive spring is arranged parallel to the touch blade surface on the side of the touch blade. When the touch blade is inserted into the slot, the side surface of the straight conductive spring is squeezed by the touch blade surface and in contact with it.

[0008] The contact plate is equipped with two groups of the straight conductive springs located on both sides of the slot, and each group includes a plurality of the straight conductive springs spaced apart and distributed along the moving direction of the contact knife.

[0009] The technical solution of this utility model has the following advantages:

[0010] 1. The utility model provides a sealed pole, a vacuum interrupter and an intermediate static contact, which are fixedly connected together and then integrally cast into an epoxy resin cover, thus becoming an integral core component, fundamentally ensuring the subsequent product quality. In addition, the insulating pull rod is arranged in the first cavity of the epoxy resin cover, and the epoxy resin cover is expanded outward to form a second cavity for installing the outgoing busbar and the flexible connection, which reduces the pollution of micro dust, increases the safe insulation distance, and effectively insulates the conductive parts from phase to phase.

[0011] 2. The utility model provides a sealed pole, and the contact plate is formed with a U-shaped slot for inserting the contact blade. A straight conductive spring is provided on the inner wall of the U-shaped slot. The length extension direction of the straight conductive spring is arranged parallel to the contact surface of the side of the contact blade. When the contact blade is inserted into the slot, the side surface of the straight conductive spring is squeezed by the contact surface and comes into contact with it. In addition to providing contact pressure, the straight conductive spring also serves to provide a conductive connection between the static contact and the moving contact. When the current increases, the contact area between the static contact and the contact blade can be increased by simply increasing the length of the straight conductive spring slightly. The increased contact pressure is relatively small, making the opening and closing contact process more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 A three-dimensional diagram of the contact blade and the sealed pole of the utility model;

[0014] Figure 2 It is a three-dimensional diagram of the sealed pole;

[0015] Figure 3 It is a cross-sectional view of the sealed pole;

[0016] Figure 4 This is a schematic diagram of the explosion structure of the sealed pole;

[0017] Figure 5 It is a structural diagram of the contact blade and the static contact;

[0018] Figure 6 Schematic diagram of the explosion structure of the contact knife and the straight conductive spring.

[0019] Explanation of the accompanying reference numerals: 1. contact blade; 6. middle static contact; 8. slot; 9. straight conductive spring; 24. vacuum arc extinguishing chamber; 25. insulating pull rod; 26. flexible connection; 27. outgoing busbar; 36. connecting plate; 37. contact plate; 41. static conductive end; 42. dynamic conductive end; 43. epoxy resin cover; 44. upper chamber; 45. lower chamber; 46. first chamber; 47. second chamber; 110. contact blade surface. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Example

[0025] This embodiment provides a sealed pole, such as Figure 1 、 Figure 2 and Figure 3 As shown, it includes a vacuum interrupter 24, an intermediate static contact 6 and an epoxy resin cover 43.

[0026] The vacuum interrupter 24 has a static conductive end 41 and a dynamic conductive end 42 respectively arranged at the top and bottom thereof.

[0027] The middle static contact 6, such as Figure 4 and Figure 5 As shown, it has a connecting plate 36 connected to the static conductive end 41 and a contact plate 37 connected to the contact blade 1. The connecting plate 36 and the vacuum interrupter 24 are integrally cast to form an epoxy resin cover 43. Figure 5 and Figure 6 As shown, the contact plate 37 is formed with a U-shaped slot 8 for inserting the stylus 1. A straight conductive spring 9 is mounted on the inner wall of the U-shaped slot 8. The length of the straight conductive spring 9 is parallel to the stylus surface 110 on the side of the stylus 1. When the stylus 1 moves up and down along a straight line and is inserted into the slot 8, the side of the straight conductive spring 9 is pressed against and in contact with the stylus surface 110. In this embodiment, the contact plate 37 is mounted with two sets of straight conductive springs 9 located on either side of the slot 8. Each set includes a plurality of straight conductive springs 9 spaced apart along the direction of movement of the stylus 1.

[0028] Epoxy resin cover 43, such as Figure 3 As shown, it has an upper chamber 44 and a lower chamber 45, the vacuum arc chamber 24 is installed in the upper chamber 44, the lower chamber 45 includes a first chamber 46 located below the upper chamber 44, and a second chamber 47 located on the side of the first chamber 46, the first chamber 46 is provided with an insulating pull rod 25 connected to the moving conductive end 42, the second chamber 47 is installed with an outgoing busbar 27, and the outgoing busbar 27 is connected to the moving conductive end 42 through a flexible connection 26.

[0029] The utility model provides a sealed pole, a vacuum interrupter 24 and an intermediate static contact 6, which are fixedly connected together and then formed into an epoxy resin cover 43 by integral casting, thus becoming an integral core component, fundamentally ensuring the subsequent product quality; in addition, the insulating pull rod 25 is arranged in the first cavity 46 of the epoxy resin cover 43, and the epoxy resin cover 43 is expanded outward to form a second cavity 47 for installing the outgoing busbar 27 and the soft connection 26, which reduces the pollution of micro dust, increases the safe insulation distance, and excellently insulates the conductive parts from phase to phase.

[0030] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A sealed pole, characterized in that: include: The vacuum interrupter (24) has a static conductive end (41) and a dynamic conductive end (42) respectively arranged at the top and bottom thereof; The intermediate static contact (6) has a connecting plate (36) connected to the static conductive end (41) and a contact plate (37) connected to the contact blade (1), wherein the connecting plate (36) and the vacuum interrupter (24) are integrally cast to form an epoxy resin cover (43); The epoxy resin cover (43) has an upper chamber (44) and a lower chamber (45), wherein the vacuum arc extinguishing chamber (24) is installed in the upper chamber (44), and the lower chamber (45) includes a first chamber (46) located below the upper chamber (44), and a second chamber (47) located on the side of the first chamber (46), wherein the first chamber (46) is provided with an insulating pull rod (25) connected to the moving conductive end (42), and the second chamber (47) is provided with an outgoing busbar (27), and the outgoing busbar (27) is connected to the moving conductive end (42) through a flexible connection (26).

2. The sealed pole according to claim 1, characterized in that: The contact plate (37) is formed with a U-shaped slot (8) for the contact blade (1) to be inserted.

3. The sealed pole according to claim 2, characterized in that: A straight conductive spring (9) is provided on the inner wall of the U-shaped slot (8), and the length extension direction of the straight conductive spring (9) is arranged parallel to the touch blade surface (110) on the side of the touch blade (1), wherein when the touch blade (1) is inserted into the slot (8), the side surface of the straight conductive spring (9) is squeezed by the touch blade surface (110) and is in contact with it.

4. The sealed pole according to claim 3, characterized in that: The contact plate (37) is equipped with two groups of the straight conductive springs (9) located on both sides of the slot (8), and each group includes a plurality of the straight conductive springs (9) spaced apart along the moving direction of the contact blade (1).

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