Isolating switch of vacuum circuit breaker

Abstract

The utility model provides an isolating switch of a vacuum circuit breaker, and relates to the technical field of vacuum circuit breakers, the isolating switch of the vacuum circuit breaker comprises a base, the base comprises two first support members located at two ends and a second support member connected with the first support members; the operating rod penetrates through the first supporting pieces, at least part of the operating rod is located between the two first supporting pieces, and the two ends of the operating rod are located on the outer sides of the first supporting pieces; one end of the post insulator is fixedly connected with the second supporting piece; one end of the first disconnecting link is fixedly connected to the other end of the post insulator, and the disconnecting switch of the vacuum circuit breaker has the advantage of improving the stability of the disconnecting switch of the vacuum circuit breaker.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum circuit breakers, in particular to an isolating switch of a vacuum circuit breaker. Background Art

[0002] A vacuum circuit breaker is a high-voltage electrical device whose primary feature is the rapid interruption of current through the use of a high vacuum as an arc-extinguishing medium. The isolating switch is primarily used to isolate the power supply to ensure safe maintenance of other electrical equipment. Existing vacuum circuit breaker isolating switches suffer from unstable forces between the blades, leading to poor contact at the isolating blades and poor overall design stability, seriously impacting the safety and service life of the vacuum circuit breaker. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the vacuum circuit breaker disconnector in the prior art and provide a vacuum circuit breaker disconnector, which can greatly improve the stability of the vacuum circuit breaker disconnector.

[0004] In order to achieve the above and other purposes, the present invention is implemented by including the following technical solutions: The present invention provides an isolating switch for a vacuum circuit breaker, the isolating switch for the vacuum circuit breaker comprising:

[0005] The base includes two first support members at both ends and a second support member connected to the first support members.

[0006] An operating rod passes through the first support member and is at least partially located between the two first support members, with both ends of the operating rod located outside the first support members.

[0007] A post insulator, one end of which is fixedly connected to the second support member.

[0008] A first knife switch, one end of which is fixedly connected to the other end of the support insulator.

[0009] The second knife gate includes a first blade and a second blade connected together at both ends, a gap is formed between the first blade and the second blade, and a movement trajectory of the gap passes through the first knife gate.

[0010] An operating insulator, one end of which is connected to the operating rod, and the other end of which is connected to the second knife switch.

[0011] A clip, one end of which is fixed on the second knife gate, the clip is symmetrically arranged on the outside of the first blade and the second blade, and the other end of the clip extends out of the end of the second knife gate.

[0012] and an elastic member disposed at the inner sidewall of the first support member, one end of the elastic member is connected to the operating rod, and the other end is connected to the second support member.

[0013] In some embodiments, the first blade and the second blade are provided with a first notch at one end close to the first disconnecting switch.

[0014] In some embodiments, the clip is provided with a second notch, and the second notch is disposed outside the first notch.

[0015] In some embodiments, the connection between the second disconnecting switch and the operating insulator is located in the gap.

[0016] In some embodiments, the first support member is provided with a through hole, and the diameter of the through hole is larger than the outer diameter of the operating rod.

[0017] In some embodiments, limiting plates are fixedly connected to both ends of the operating rod, and a plurality of small holes may be provided on the limiting plates.

[0018] In some embodiments, the operating insulator and the operating rod are connected by a first transmission rod, and the first transmission rod is sleeved on the operating rod.

[0019] The present invention provides a disconnecting switch for a vacuum circuit breaker. Compared with the prior art, the present invention has the following beneficial effects: good contact at the isolating disconnecting switch, good overall design stability of the disconnecting switch, safe use of the vacuum circuit breaker, and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It shows a schematic diagram of the overall structure of the disconnecting switch of the vacuum circuit breaker of the present invention;

[0022] Figure 2 It shows a schematic diagram of the second disconnecting switch of the disconnecting switch of the vacuum circuit breaker of the present invention;

[0023] Figure 3 It shows an enlarged view of part A of the disconnecting switch of the vacuum circuit breaker of the present invention.

[0024] 100 - Base, 101 - First support member, 102 - Second support member, 200 - Post insulator, 300 - First disconnecting switch, 301 - Base, 302 - Contact, 400 - Second disconnecting switch, 401 - First blade, 402 - Second blade, 403 - First notch, 404 - Gap, 500 - Operating insulator, 600 - Clip, 601 - Second notch, 700 - Bolt, 800 - Nut, 900 - Rotating shaft, 110 - Current transformer, 120 - Second transmission rod, 130 - Operating rod, 131 - Limit plate, 132 - Small hole, 140 - First transmission rod, 150 - Elastic member, 160 - Reinforcing plate. Detailed implementation manners

[0025] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0026] As Figure 1 shown, the present utility model provides a disconnecting switch for a vacuum circuit breaker. The disconnecting switch of the vacuum circuit breaker includes a base 100, and the base 100 includes two first support members 101 located at both ends and a second support member 102 connecting the first support members 101.

[0027] As Figure 1 shown, one end of the second support member 102 is fixedly connected to a post insulator 200, a first disconnecting switch 300 is fixedly connected to the post insulator 200. The first disconnecting switch 300 includes a base 301 and a contact 302 located on the base 301. The base 301 is perpendicular to the contact 302, and the base 301 is fixedly connected to the post insulator 200.

[0028] As Figure 1 and Figure 2As shown, the second disconnect switch 400 includes a first blade 401 and a second blade 402 with their two ends connected together. On the side close to the first disconnect switch 300, the first blade 401 and the second blade 402 are provided with a first notch 403, which may be a U-shaped structure. The U-shaped structure of the first notch 403 can disperse stress, making the clamping force between the disconnect switches evenly distributed, so as to have better connection stability. A gap 404 is formed between the first blade 401 and the second blade 402. The movement trajectory of the gap 404 at the end close to the first disconnect switch 300 passes through the first disconnect switch 300. The contact 302 contacts or separates from the second disconnect switch 400 at the gap 404 to realize the connection or disconnection of the disconnect switch. The second disconnect switch 400 is connected to the operating insulator 500, and the connection point is located in the gap 404.

[0029] As Figure 2 shown, clamping pieces 600 are symmetrically arranged outside the first notch 403. One end of the clamping piece 600 can be fixed on the second disconnect switch 400, and the other end of the clamping piece 600 can extend out of the end of the second disconnect switch 400 and be fixed together by a bolt 700 and a nut 800. A second notch 601 may also be provided on the clamping piece 600, and the second notch 601 may also be U-shaped. The second notch 601 may be arranged outside the first notch 403.

[0030] As Figure 1 shown, one end of the second disconnect switch 400 is connected with a rotating shaft 900, and the second disconnect switch 400 is connected to the current transformer 110 through the rotating shaft 900.

[0031] As Figure 1 shown, through holes (not shown in the figure) may be provided on the first support member 101. The through holes can allow the operating rod 130 to pass through the first support member 101. The operating rod 130 is at least partially located between two first support members 101. Further, the diameter of the through hole is larger than the outer diameter of the operating rod 130, and both ends of the operating rod 130 are located outside the first support member 101.

[0032] As Figure 1As shown, limit plates 131 are fixedly connected to both ends of the operating rod 130. Multiple small holes 132 may be provided on the limit plates 131, and the small holes 132 facilitate installation and disassembly. When the disconnecting switch is operating, an operating mechanism may be provided on the operating rod 130 between the first support member 101 and the limit plate 131, and the operating mechanism can drive the operating rod 130 to rotate. A first transmission rod 140 is connected to the operating rod 130, and one end of the first transmission rod 140 is connected to the bottom of the operating insulator 500. When the operating mechanism is actuated, the operating rod 130 is rotated counterclockwise, driving the first transmission rod 140 to rotate counterclockwise to move the operating insulator 500 upward, and separating the second disconnecting blade 400 from the contact 302.

[0033] As Figure 1 and Figure 3 shown, the disconnecting switch of the vacuum circuit breaker includes an elastic member 150. The elastic member 150 may be provided at the inner sidewall on one side of the first support member 101, and it is a concealed elastic member. A second transmission rod 120 is sleeved on the operating rod 130 near the inner sidewall of the first support member 101. One end of the elastic member 150 is connected to the second transmission rod 120, and the other end of the elastic member 150 is connected to the second support member 102. The elastic member 150 can improve the operating efficiency of the disconnecting switch.

[0034] As Figure 1 and Figure 3 shown, the disconnecting switch of the vacuum circuit breaker includes a reinforcing plate 160. The reinforcing plate 160 may also be sleeved outside the operating rod 130. One end of the reinforcing plate 160 is fixedly connected below the first support member 102, and the reinforcing plate 160 can make the entire disconnecting switch structure more stable.

[0035] In the description of the present utility model, it should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or positional relationship indicated by the terms "height", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0037] Furthermore, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0038] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "certain embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0039] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the qualified conditions for the implementation of this application. Therefore, they do not have any substantial technical meaning. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the efficacy that this application can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed in this application.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Disconnector of a vacuum circuit breaker, characterized in that: The disconnecting switch includes: A base, the base includes two first support members located at both ends and a second support member connecting the first support members; An operating rod, the operating rod penetrates through the first support member and is at least partially located between the two first support members, and both ends of the operating rod are located outside the first support member; A post insulator, one end of the post insulator is fixedly connected to the second support member; A first disconnecting blade, one end of the first disconnecting blade is fixedly connected to the other end of the post insulator; A second disconnecting blade, the second disconnecting blade includes a first blade and a second blade whose two ends are connected together, a gap is formed between the first blade and the second blade, and the movement track of the gap passes through the first disconnecting blade; An operating insulator, one end of the operating insulator is connected to the operating rod, and the other end of the operating insulator is connected to the second disconnecting blade; A clip, one end of the clip is fixed on the second disconnecting blade, the clip is symmetrically arranged outside the first blade and the second blade, and the other end of the clip extends out of the end of the second disconnecting blade; And an elastic member, arranged at the inner side wall of the first support member, one end of the elastic member is connected to the operating rod, and the other end is connected to the second support member.

2. The disconnector of the vacuum circuit breaker according to claim 1, characterized in that: The first blade and the second blade are provided with a first notch at one end close to the first disconnecting blade.

3. The disconnector of the vacuum circuit breaker according to claim 2, characterized in that: The clip is provided with a second notch, and the second notch is arranged outside the first notch.

4. The disconnector of the vacuum circuit breaker according to claim 1, characterized in that: The connection part of the second disconnecting blade and the operating insulator is located in the gap.

5. The disconnector of the vacuum circuit breaker according to claim 1, characterized in that: The first support member is provided with a through hole, and the diameter of the through hole is larger than the outer diameter of the operating rod.

6. The disconnector of the vacuum circuit breaker according to claim 1, characterized in that: Limit plates are fixedly connected to both ends of the operating rod, and multiple small holes can be arranged on the limit plates.

7. The disconnector of the vacuum circuit breaker according to claim 1, characterized in that: The operating insulator and the operating rod are connected by a first transmission rod, and the first transmission rod is sleeved on the operating rod.

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