A disconnecting switch group for double busbar cabinet

Abstract

The present invention discloses an isolating switch group for a double busbar cabinet, wherein a first isolating knife and a second isolating knife are fixed by a busbar with a square frame structure. When opening the switch is required, the first isolating knife and the second isolating knife are both accommodated in an accommodating space. When closing the switch is required, the first isolating knife and the second isolating knife can be respectively rotated around the busbar until they are perpendicular to the busbar, so as to respectively connect the first busbar and the second busbar in the double busbar. An isolating switch group for a double busbar cabinet provided by an embodiment of the present invention can quickly switch to another busbar when a group of busbar outgoing lines are under maintenance, and can continue to guarantee power supply to users while the maintenance is being carried out, and the busbar has a U-shaped double-layer structure, that is, the first isolating knife and the busbar form a U-shaped structure, and the second isolating knife and the busbar form a U-shaped structure. Compared with the traditional single-layer copper busbar, the heat dissipation effect is better and more conducive to the safe operation of the equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power, and in particular relates to an isolating switch group used for a double busbar cabinet. Background Art

[0002] 12kV metal armored center-mounted removable switchgear (abbreviated as center-mounted switchgear) is a high-voltage switchgear widely used in the 10kV distribution network of the current power system. However, with the continuous development of the power system, the reliability of power supply is constantly improving, which has higher requirements for power equipment.

[0003] As attached Figure 1 As shown in the figure, it is a new type of high-voltage switchgear. The notable feature of this new type of high-voltage switchgear is its double busbar structure. Compared with traditional switchgear (center cabinet), it has the following advantages:

[0004] Traditional switchgear has a single busbar structure. Once a busbar fails, it needs to be repaired, which is time-consuming and labor-intensive. In addition, all user outgoing lines on the busbar will be cut off. Figure 1 The new high-voltage switchgear shown has a double busbar structure. When one set of busbars fails for maintenance, it can quickly switch to the other set of busbars, and continue to ensure power supply to users while maintenance is being carried out.

[0005] However, to realize this function, a set of isolating switches and operation according to a certain procedure are required. As a new type of high-voltage switchgear, there is currently no mature and applicable isolating switch available. Summary of the invention

[0006] The object of the present invention is to provide an isolating switch group for a double busbar cabinet to solve the above technical problems.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] An isolating switch group for a double busbar cabinet comprises a busbar, a first isolating switch and a second isolating switch;

[0009] The busbar is a square frame structure, and the middle part of the square frame structure has a receiving space for receiving the first isolating blade and the second isolating blade;

[0010] The static end of the first isolation blade is rotatably connected to the inner side of the frame structure, and the static end of the second isolation blade is rotatably connected to the inner side of the frame structure;

[0011] When the first isolating knife is closed, the first isolating knife is perpendicular to the busbar, and when the first isolating knife is opened, the first isolating knife is accommodated in the accommodation space;

[0012] When the second isolating knife is closed, the second isolating knife is perpendicular to the busbar, and when the second isolating knife is opened, the second isolating knife is accommodated in the accommodating space.

[0013] Optionally, as an optional technical solution of the present invention, the first isolation knife includes two first blades arranged in parallel, a first spring bearing is fixedly arranged between the two first blades, and a first convex strip is respectively arranged on the two first blades;

[0014] A first clamping space for clamping the first busbar joint is formed between the two first convex strips and the first spring bearing;

[0015] The second isolation knife comprises two second blades arranged in parallel, a second spring bearing is fixedly arranged between the two second blades, and a second convex strip is respectively arranged on the two second blades;

[0016] A second clamping space for clamping the second busbar joint is formed between the two second protrusions and the second spring bearing.

[0017] Optionally, as an optional technical solution of the present invention, the disconnector group for the double busbar cabinet further includes a first adapter and a second adapter;

[0018] The two first blades are rotatably connected to the inner side of the frame structure through the first adapter;

[0019] The two second blades are rotatably connected to the inner side of the frame structure through the second adapter.

[0020] Optionally, as an optional technical solution of the present invention, each of the two first blades is provided with a first operating hole for fixedly connecting to an external first operating rod;

[0021] The two second blades are respectively provided with a second operating hole for fixedly connecting to an external second operating rod.

[0022] Optionally, as an optional technical solution of the present invention, a mounting hole for connecting to a contact seat on a circuit breaker is provided on one side of the busbar.

[0023] Optionally, as an optional technical solution of the present invention, two fixing holes for installing insulators are opened on one side of the busbar.

[0024] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0025] An isolating switch group for a double busbar cabinet provided by an embodiment of the present invention fixes a first isolating knife and a second isolating knife through a busbar with a square frame structure. When opening the switch is required, the first isolating knife and the second isolating knife are both accommodated in the accommodation space. When closing the switch is required, the first isolating knife and the second isolating knife can be rotated around the busbar respectively until they are perpendicular to the busbar to respectively connect the first busbar and the second busbar in the double busbar. An isolating switch group for a double busbar cabinet provided by an embodiment of the present invention can quickly switch to another busbar when a busbar outgoing line failure is under maintenance, and power supply to users can continue to be guaranteed while maintenance is being carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0028] Figure 1 A structural diagram of an isolating switch group for a double busbar cabinet provided in an embodiment of the present invention;

[0029] Figure 2 Another structural diagram of an isolating switch group for a double busbar cabinet provided in an embodiment of the present invention;

[0030] Figure 3 Another structural diagram of an isolating switch group for a double busbar cabinet provided in an embodiment of the present invention.

[0031] Illustration Description:

[0032] Busbar 11, first isolating knife 12, second isolating knife 13;

[0033] Accommodating space 111, mounting hole 112, fixing hole 113;

[0034] A first blade 121, a first spring bearing 122, a first convex strip 123, a first clamping space 124, a first adapter 125, and a first operating hole 126;

[0035] The second blade 131 , the second spring bearing 132 , the second convex strip 133 , the second clamping space 134 , the second adapter 135 , and the second operating hole 136 . DETAILED DESCRIPTION

[0036] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 3 shown.

[0038] This embodiment provides a disconnector group for a double busbar cabinet, comprising a busbar 11, a first disconnector 12 and a second disconnector 13. The first disconnector 12 and the second disconnector 13 have the same structure.

[0039] Specifically, the busbar 11 is a square frame structure, including two long frames and two short frames. In the middle of the square frame structure, that is, in the middle of the two long frames and the two short frames, there is an accommodating space 111 for accommodating the first isolation knife 12 and the second isolation knife 13.

[0040] The static end of the first isolating blade 12 is rotatably connected to the inner side of the frame structure, and the static end of the second isolating blade 13 is rotatably connected to the inner side of the frame structure.

[0041] When the first isolating knife 12 needs to be closed, the moving end of the first isolating knife 12 is rotated, and the first isolating knife 12 rotates around the busbar 11 with the static end as the fulcrum until the first isolating knife 12 is perpendicular to the busbar 11. The first isolating knife 12 is connected to the first busbar in the double busbar to achieve closing.

[0042] Similarly, when the second isolating knife 13 needs to be closed, the moving end of the second isolating knife 13 is rotated, and the second isolating knife 13 rotates around the busbar 11 with the static end as the fulcrum until the second isolating knife 13 is perpendicular to the busbar 11. The second isolating knife 13 is connected to the second busbar in the double busbar to achieve closing.

[0043] When the first isolating blade 12 is opened, the first isolating blade 12 is completely accommodated in the accommodation space 111 .

[0044] When the second isolating blade 13 is opened, the second isolating blade 13 is completely accommodated in the accommodation space 111 .

[0045] Therefore, an isolating switch group for a double busbar cabinet provided in an embodiment of the present invention can quickly switch to another set of busbars through the isolating switch group when one set of busbar outgoing lines needs to be repaired, thereby continuing to ensure power supply to users while carrying out maintenance.

[0046] It should be noted that the isolating switch group for the double busbar cabinet provided in this embodiment can be used not only in a single-phase power supply network, but also in a two-phase or multi-phase (such as three-phase) power supply network.

[0047] Furthermore, the first isolating knife 12 includes two first blades 121 arranged in parallel, a first spring bearing 122 is fixedly arranged between the two first blades 121, and a first convex strip 123 is respectively arranged on the two first blades 121. A first clamping space 124 for clamping the first busbar joint is formed between the two first convex strips 123 and the first spring bearing 122. Therefore, when the first isolating knife 12 is closed, the joint of the first busbar in the double busbar is fixed in the first clamping space 124.

[0048] Similarly, the second isolating knife 13 includes two second blades 131 arranged in parallel, a second spring bearing 132 is fixedly arranged between the two second blades 131, and a second convex strip 133 is respectively arranged on the two second blades 131; a second clamping space 134 for clamping the second busbar joint is formed between the two second convex strips 133 and the second spring bearing 132. Therefore, when the second isolating knife 13 is closed, the joint of the second busbar in the double busbar is fixed in the second clamping space 134.

[0049] Therefore, the busbar 11 has a double-layer structure in the shape of a U-shaped letter "U", that is, the first isolating knife 12 and the busbar 11 form a U-shaped structure, and the second isolating knife 13 and the busbar 11 form a U-shaped structure. Compared with the traditional single-layer copper busbar, the heat dissipation effect is better and it is more conducive to the safe operation of the equipment.

[0050] As an optional mode of this embodiment, the two first blades 121 are rotatably connected to the inner side of the frame structure through the first adapter 125; the two second blades 131 are rotatably connected to the inner side of the frame structure through the second adapter 135. Specifically, the first adapter 125 and the second adapter 135 both include bolts, spring washers, etc.

[0051] As an optional mode of this embodiment, the two first blades 121 are respectively provided with a first operating hole 126 for fixedly connecting an external first operating rod (not shown in the figure); the two second blades 131 are respectively provided with a second operating hole 136 for fixedly connecting an external second operating rod (not shown in the figure). Therefore, the external first operating rod and the external second operating rod are respectively used to control the first isolation blade 12 and the second isolation blade 13.

[0052] As an optional manner of this embodiment, a mounting hole 112 for connecting to a contact seat on a circuit breaker is provided on one side of the busbar 11, so as to realize electrical connection between the busbar 11 and the circuit breaker.

[0053] As an optional method of this embodiment, two fixing holes 113 for installing insulators are provided on one side of the busbar 11. Specifically, the isolating switch group can be fixed on the electrical cabinet by installing insulators.

[0054] Here, technical vocabulary is used only for the purpose of describing specific example embodiments and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" used herein may be intended to include the plural forms as well. The terms "comprises", "comprising", "including", and "having" are inclusive, and thus specify the presence of the claimed features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or additional presence of one or more other features, wholes, steps, operations, elements, components, and / or combinations thereof. Unless the order of execution is explicitly indicated, the method steps, processing, and operations described herein are not interpreted as necessarily needing to be performed in the specific order discussed and shown. It should also be understood that additional or optional steps may be adopted.

[0055] When an element or layer is referred to as being "on ...", "engaged with ...", "connected to" or "coupled to" another element or layer, it may be directly on another element or layer, engaged with another element or layer, connected to or coupled to another element or layer, or there may be an intervening element or layer. In contrast, when an element or layer is referred to as being "directly on ...", "directly engaged with ...", "directly connected to" or "directly coupled to" another element or layer, there may be no intervening element or layer. Other words used to describe element relationships should be interpreted in a similar manner (e.g., "between ..." and "directly between ...", "adjacent" and "directly adjacent", etc.). The term "and / or" used herein includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts are not limited by these terms. These terms may only be used to distinguish one element, component, region or part from another element, component, region or part. Unless clearly indicated by the context, the use of terms such as "first", "second" and other numerical terms herein does not imply sequence or order. Therefore, the first element, component, region, layer or part discussed below can adopt the terminology of the second element, component, region, layer or part without departing from the teaching of the exemplary embodiment.

[0056] Spatially relative terms, such as "inside", "outside", "below", "below...", "lower", "above", "upper", etc., may be used herein for ease of description to describe the relationship between one element or feature and one or more other elements or features as shown in the figure. Spatially relative terms may be meant to include different orientations of the device in addition to the orientation depicted in the figure. For example, if the device in the figure is flipped, the elements described as "below other elements or features" or "below elements or features" will be oriented as "above other elements or features". Therefore, the example term "below..." may include both upward and downward orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations) and interpreted with the spatially relative descriptions herein.

[0057] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. 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 invention.

Claims

1. A disconnector switch group for double busbar cabinet, It is characterized in that It includes a busbar, a first isolating switch and a second isolating switch; The busbar is a square frame structure, and the middle part of the square frame structure has a receiving space for receiving the first isolating blade and the second isolating blade; The static end of the first isolation blade is rotatably connected to the inner side of the frame structure, and the static end of the second isolation blade is rotatably connected to the inner side of the frame structure; When the first isolating knife is closed, the first isolating knife is perpendicular to the busbar, and when the first isolating knife is opened, the first isolating knife is accommodated in the accommodation space; When the second isolating knife is closed, the second isolating knife is perpendicular to the busbar, and when the second isolating knife is opened, the second isolating knife is accommodated in the accommodation space; The first isolation knife comprises two first blades arranged in parallel, a first spring bearing is fixedly arranged between the two first blades, and a first convex strip is respectively arranged on the two first blades; A first clamping space for clamping the first busbar joint is formed between the two first convex strips and the first spring bearing; The second isolation knife comprises two second blades arranged in parallel, a second spring bearing is fixedly arranged between the two second blades, and a second convex strip is respectively arranged on the two second blades; A second clamping space for clamping the second busbar joint is formed between the two second convex strips and the second spring bearing; The two first blades are respectively provided with a first operating hole for fixedly connecting to an external first operating rod; The two second blades are respectively provided with a second operating hole for fixedly connecting to an external second operating rod; A mounting hole for connecting to a contact seat on a circuit breaker is provided on one side of the busbar.

2. The isolating switch group for a double busbar cabinet according to claim 1, It is characterized in that Also includes a first adapter and a second adapter; The two first blades are rotatably connected to the inner side of the frame structure through the first adapter; The two second blades are rotatably connected to the inner side of the frame structure through the second adapter.

3. The isolating switch group for a double busbar cabinet according to claim 1, Features: One side of the busbar is provided with two fixing holes for installing insulators.

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