CN110601002A - Isolating switch group for double-bus cabinet - Google Patents

Abstract

The invention discloses an isolating switch group for a double-busbar cabinet. A first isolating knife and a second isolating knife are fixed through a converging busbar of a square frame structure. Accommodated in the accommodating space, when closing is required, the first isolating knife and the second isolating knife can respectively rotate around the converging bus until they are vertical to the converging bus, so as to respectively connect the first bus and the second bus in the double bus. The embodiment of the present invention provides an isolating switch group for a double-busbar cabinet. When a group of busbars is out of order for maintenance, it can quickly switch to another group of busbars, and can continue to ensure power supply to users while performing maintenance, and The confluence busbar has a back-shaped double-layer structure, that is, the first isolation knife and the confluence busbar form a back-shaped structure, and the second isolation knife and the confluence busbar form a back-shaped structure. Compared with the traditional single-layer copper busbar, the heat dissipation effect is better and more efficient. Conducive to the safe operation of equipment.

Description

A kind of isolating switch group for double busbar cabinet

technical field

The invention belongs to the technical field of electric power, and in particular relates to a disconnector group for a double-bus bar cabinet.

Background technique

The 12kV metal armored central removable switchgear (referred to as the central cabinet) is a high-voltage switchgear widely used in the 10kV distribution network of the power system. However, with the continuous development of the power system, the reliability of power supply has been continuously improved, which has higher requirements for power equipment.

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

The traditional switchgear is a single-busbar structure. Once the busbar fails, it needs to be repaired, which requires a large amount of engineering, time-consuming and labor-intensive. And all outgoing lines of users on this bus will be powered off. The new high-voltage switchgear shown in Figure 1 has a double-busbar structure. When one group of busbars is faulty for maintenance, it can quickly switch to another group of busbars, and can continue to ensure power supply to users while performing maintenance.

However, to realize this function, a set of isolating switches is required and operated according to a certain procedure. As a new type of high-voltage switchgear, there is currently no mature and applicable disconnector available.

Contents of the invention

The object of the present invention is to provide a disconnect switch group for a double busbar cabinet to solve the above technical problems.

For reaching this purpose, the present invention adopts following technical scheme:

A isolating switch group for a double-busbar cabinet, including a busbar, a first isolating knife and a second isolating knife;

The bus bar is a frame structure, and the middle part of the frame structure has an accommodating space for accommodating the first isolating knife and the second isolating knife;

The static end of the first spacer knife is rotatably connected to the inner side of the frame structure, and the static end of the second spacer knife is rotatably connected to the inner side of the square 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.

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 two The first blades are respectively provided with a first convex line;

A first clamping space for clamping the first bus joint is formed between the two first protrusions and the first spring bearing;

The second isolation knife includes two second blades arranged in parallel, a second spring bearing is fixedly arranged between the two second blades, and a second convex line is respectively arranged on the two second blades;

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

Optionally, as an optional technical solution of the present invention, the isolating switch group for the double busbar cabinet further 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.

Optionally, as an optional technical solution of the present invention, the two first blades are respectively provided with a first operation hole for fixed connection with the external first operation rod;

The two second blades are respectively provided with a second operation hole for fixed connection with the external second operation rod.

Optionally, as an optional technical solution of the present invention, one side of the bus bar is provided with a mounting hole for connecting to a contact seat on a circuit breaker.

Optionally, as an optional technical solution of the present invention, two fixing holes for installing insulators are opened on one side of the bus bar.

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

The embodiment of the present invention provides an isolating switch group for a double-busbar cabinet. The first isolating knife and the second isolating knife are fixed through the bus bar of the square frame structure. When opening is required, the first isolating knife and the second isolating The knives are all accommodated in the accommodation space. When the switch needs to be closed, the first isolating knife and the second isolating knife can respectively rotate around the confluence bus until they are vertical to the confluence bus, so as to respectively connect the first bus and the second bus in the double bus. The embodiment of the present invention provides an isolating switch group for a double busbar cabinet. When a group of busbars is out of order for maintenance, it can quickly switch to another group of busbars, and can continue to ensure power supply to users while performing maintenance.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

The structures, proportions, sizes, etc. shown in this manual are only used to cooperate with the content disclosed in the manual, so that people familiar with this technology can understand and read, and are not used to limit the conditions for the implementation of the present invention, so there is no technical In the substantive meaning above, any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. within the range that can be covered.

Fig. 1 is a structural diagram of a disconnector group for a double busbar cabinet provided by an embodiment of the present invention;

Fig. 2 is another structural diagram of a disconnector group for a double busbar cabinet provided by an embodiment of the present invention;

Fig. 3 is another structural diagram of a disconnector group for a double busbar cabinet provided by an embodiment of the present invention.

Graphical description:

Busbar 11, first isolating knife 12, second isolating knife 13;

Accommodating space 111, installation hole 112, fixing hole 113;

The first blade 121, the first spring bearing 122, the first convex strip 123, the first clamping space 124, the first adapter 125, and the first operating hole 126;

The second blade 131 , the second spring bearing 132 , the second protrusion 133 , the second clamping space 134 , the second adapter 135 , and the second operating hole 136 .

Detailed ways

In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following description The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1 to Figure 3.

This embodiment provides a disconnector group for a double busbar cabinet, including a busbar 11 , a first disconnector 12 and a second disconnector 13 . Wherein, the structures of the first isolation knife 12 and the second isolation knife 13 are consistent.

Specifically, the bus bar 11 is a square frame structure, including two long frames and two short frames. In the middle part of the frame structure, that is, there is a middle part surrounded by the two long frames and the two short frames for accommodating the first An accommodating space 111 for the first isolation knife 12 and the second isolation knife 13 .

The static end of the first spacer knife 12 is rotatably connected with the inner side of the square frame structure, and the static end of the second spacer knife 13 is rotatably connected with the inner side of the square frame structure.

When the first isolating knife 12 needs to be closed, turn the moving end of the first isolating knife 12, and the first isolating knife 12 takes the static end as a fulcrum and rotates around the bus bar 11 until the first isolating knife 12 is perpendicular to the bus bar 11 , the first isolation knife 12 is connected to the first busbar in the double busbars to realize closing.

In the same way, when the second isolating knife 13 needs to be switched on, the moving end of the second isolating knife 13 is rotated, and the second isolating knife 13 takes the static end as a fulcrum and rotates around the bus bar 11 until the second isolating knife 13 is connected to the busbar. When the busbar 11 is vertical, the second isolation knife 13 is connected to the second busbar in the double busbars to realize closing.

When the first isolation knife 12 is opened, the first isolation knife 12 is completely accommodated in the accommodation space 111 .

When the second isolation knife 13 is opened, the second isolation knife 13 is completely accommodated in the accommodation space 111 .

Therefore, the embodiment of the present invention provides a disconnector group for double-busbar cabinets. When a group of busbars is out of order for troubleshooting, the disconnector group can quickly switch to another group of busbars. Continue to ensure power supply to users.

It should be noted that the isolating switch group for double-busbar cabinets provided in this embodiment can be used not only in single-phase power supply networks, but also in two-phase or multi-phase (eg three-phase) power supply networks.

Further, the first isolation 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 protruding line is respectively arranged on the two first blades 121 123. A first clamping space 124 for clamping the first bus joint is formed between the two first protrusions 123 and the first spring bearing 122 . Therefore, when the first isolation knife 12 is switched on, the joint of the first busbar in the double busbars is fixed in the first clamping space 124 .

In the same way, the second isolation 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 protruding line is respectively arranged on the two second blades 131 133 ; a second clamping space 134 for clamping the second busbar joint is formed between the two second protrusions 133 and the second spring bearing 132 . Therefore, when the second isolation knife 13 is switched on, the joint of the second busbar in the double busbars is fixed in the second clamping space 134 .

Therefore, the bus bar 11 has a back-shaped double-layer structure, that is, the first isolation knife 12 and the bus bar 11 form a back-shaped structure, and the second isolation knife 13 and the bus bar 11 form a back-shaped structure. Compared with the traditional single-layer copper bus bar , the heat dissipation effect is better, which is more conducive to the safe operation of the equipment.

As an optional mode of this embodiment, the two first blades 121 are rotationally connected to the inside of the frame structure through the first adapter 125; the two second blades 131 are connected to the frame structure through the second adapter 135. The inner rotating connection. Specifically, both the first adapter piece 125 and the second adapter piece 135 include bolts, spring washers and the like.

As an optional mode of this embodiment, two first blades 121 respectively offer a first operating hole 126 for fixedly connecting an external first operating rod (not shown in the figure); two second blades 131 A second operating hole 136 for fixedly connecting an external second operating rod (not shown in the figure) is opened on the top. Therefore, the outer first operating lever and the outer second operating lever are used to control the first isolation knife 12 and the second isolation knife 13 respectively.

As an optional mode of this embodiment, one side of the bus bar 11 is provided with a mounting hole 112 for connecting the contact seat on the circuit breaker, so as to realize the electrical connection between the bus bar 11 and the circuit breaker.

As an optional manner of this embodiment, two fixing holes 113 for installing insulators are opened on one side of the bus bar 11 . Specifically, the isolating switch group can be fixed on the electrical cabinet by installing an insulator.

The terminology used herein is for the purpose of describing particular example embodiments only and no limitation is intended. As used herein, the singular forms "a", "an", and "the" may be meant to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "including" and "having" are inclusive and thus specify that there are stated features, integers, steps, operations, elements and/or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring performance in the specific order discussed and illustrated, unless an order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be employed.

When an element or layer is referred to as being "on," "bonded to," "connected to," or "coupled to" another element or layer, it can be directly on, or in contact with, another element or layer. An element or layer may be bonded, connected or coupled to another element or layer, and intervening elements or layers may also be present. 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 not be intervening elements or layers in between. Other words used to describe the relationship between elements should be interpreted in a like fashion (eg, "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, the term "and/or" 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 sections, these elements, components, regions, layers and/or sections are not constrained by these terms. limit. These terms may be only used to distinguish one element, component, region or section from another element, component, region or section. Terms such as the terms "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

Spatial relative terms, such as "inside", "outside", "underneath", "beneath", "below", "above", "upper", etc., may be used herein for convenience of description , to describe the relationship between one element or feature and one or more other elements or features as shown in the figures. Spatially relative terms may be meant to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of upward and downward. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and interpreted in terms of the spatially relative descriptions herein.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (6)

1. A isolating switch group for a double busbar cabinet, characterized in that it comprises a busbar, a first isolating knife and a second isolating knife; The bus bar is a frame structure, and the middle part of the frame structure has an accommodating space for accommodating the first isolating knife and the second isolating knife; The static end of the first spacer knife is rotatably connected to the inner side of the frame structure, and the static end of the second spacer knife is rotatably connected to the inner side of the square 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. 2. A kind of isolating switch group for double busbar cabinet according to claim 1, characterized in that, said first isolating knife comprises two first blades arranged in parallel, between the two said first blades A first spring bearing is fixedly arranged, and a first convex line is respectively arranged on the two first blades; A first clamping space for clamping the first bus joint is formed between the two first protrusions and the first spring bearing; The second isolation knife includes two second blades arranged in parallel, a second spring bearing is fixedly arranged between the two second blades, and a second convex line is respectively arranged on the two second blades; A second clamping space for clamping the second busbar joint is formed between the two second protrusions and the second spring bearing. 3. A disconnector group for a double busbar cabinet according to claim 2, further comprising 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. 4. A disconnector group for a double busbar cabinet according to claim 2, characterized in that: The two first blades are respectively provided with a first operation hole for fixed connection with the external first operation rod; The two second blades are respectively provided with a second operation hole for fixed connection with the external second operation rod. 5. A disconnector group for a double busbar cabinet according to claim 1, characterized in that: One side of the bus bar is provided with a mounting hole for connecting the contact seat on the circuit breaker. 6. A disconnector group for a double busbar cabinet according to claim 1, characterized in that: One side of the bus bar is provided with two fixing holes for installing insulators.