Device for fixing mutual inductor to busbar and switchgear

Abstract

The utility model relates to a device for fixing a mutual inductor to a busbar and switch equipment. The transformer (30) comprises an opening (34) adapted for the busbar (2) to pass therethrough. The device comprises at least one intermediate adapter (10), each intermediate adapter (10) being at least partially disposed within the opening (34), with the mutual inductor (30) being secured to the busbar (2) via the at least one intermediate adapter (10). According to the invention, the mutual inductor can be conveniently and firmly fixed to the busbar.

Description

Technical Field

[0001] The present disclosure relates to the field of power transmission, and in particular to a device for fixing a transformer to a busbar. Background Art

[0002] Switchgear is widely used in the field of power distribution. A large number of current and voltage sensing devices such as transformers are arranged in the switchgear. Considering the scarcity of space in the switchgear, it is not easy to arrange the transformers relative to the busbar. Considering the frequent vibrations suffered in the switchgear, the transformers must be able to withstand various vibrations and be firmly fixed in the switchgear. However, when the busbar has various shapes, this further increases the difficulty of fixing the transformers. Summary of the invention

[0003] An object of the present disclosure is to provide a device for fixing a transformer to a busbar and a switchgear to solve one or more of the above problems and other potential technical problems.

[0004] A first aspect of the present disclosure provides a device for fixing a mutual inductor to a busbar, wherein the mutual inductor comprises an opening suitable for the busbar to pass therethrough, characterized in that the device comprises: at least one intermediate adapter, each of the intermediate adapters being at least partially disposed in the opening, wherein the mutual inductor is fixed to the busbar via the at least one intermediate adapter. According to the present disclosure, the mutual inductor can be firmly fixed to the busbar without making any structural changes to the mutual inductor.

[0005] In some embodiments, the at least one intermediate adapter includes: a first intermediate adapter and a second intermediate adapter; wherein the mutual inductor is fixed to the first intermediate adapter on a first side of the busbar, and the mutual inductor is fixed to the second intermediate adapter on a second side of the busbar opposite to the first side. Thus, the mutual inductor can be more firmly fixed to the busbar by surrounding it on both sides.

[0006] In some embodiments, each of the intermediate adapters includes a main body, the main body including a first shaped portion adjacent to the busbar and a second shaped portion located on the opposite side, the shape of the first shaped portion at least partially matches the shape of the busbar, and the second shaped portion also includes at least one first threaded hole; wherein the device also includes at least one first threaded fastener, each first threaded fastener is suitable for being received in the corresponding first threaded hole to fix the mutual inductor to the intermediate adapter, wherein when the first threaded fastener is fixed in place, the main body of the intermediate adapter is clamped between the mutual inductor and the busbar.

[0007] In some embodiments, the at least one first threaded hole is formed at a position close to a longitudinal end of the intermediate adapter, wherein the longitudinal direction is consistent with an extending direction of the busbar.

[0008] In some embodiments, the first surface comprises a flat surface where the first threaded hole is provided.

[0009] In some embodiments, the first threaded hole is a blind hole.

[0010] In some embodiments, the body further comprises at least one second threaded hole extending through the body; the device further comprises at least one second threaded fastener adapted to be received in the at least one second threaded hole to fix the intermediate adapter to the busbar.

[0011] In some embodiments, the second threaded hole is formed near a longitudinal middle portion of the intermediate adapter.

[0012] In some embodiments, each of the intermediate adapters further comprises a protrusion protruding laterally from the body, the size of the protrusion being configured such that the protrusion can at least partially longitudinally abut against the transformer when the body is clamped between the transformer and the busbar.

[0013] In some embodiments, the second contoured portion comprises an outline of a cuboid or a cube.

[0014] In some embodiments, the first contoured portion comprises an arcuate profile.

[0015] In some embodiments, the transformer includes at least one of a current transformer and a voltage transformer.

[0016] A second aspect of the present disclosure provides a switchgear, comprising: a busbar; at least one transformer; and a device for fixing the transformer to the busbar according to any one of the first aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the embodiments of the present disclosure will become readily understood by referring to the accompanying drawings and reading the following detailed description. In the accompanying drawings, several embodiments of the present disclosure are shown by way of example and not limitation.

[0018] Figure 1 An overall schematic diagram of a switch cabinet according to an embodiment of the present disclosure is shown.

[0019] Figure 2 The diagram is a three-dimensional schematic diagram showing a state where a mutual inductor and a busbar are fixed together using the device for fixing a mutual inductor to a busbar according to an embodiment of the present disclosure.

[0020] Figure 3 Show Figure 2 Top view of the structure shown.

[0021] Figure 4 A schematic structural diagram of a mutual inductor according to an embodiment of the present disclosure is shown.

[0022] Figure 5 A schematic structural diagram of a device for fixing a mutual inductor to a busbar according to an embodiment of the present disclosure is shown, wherein the busbar and the intermediate adapter are shown to be installed together.

[0023] Figure 6 A schematic structural diagram of a device for fixing a mutual inductor to a busbar according to an embodiment of the present disclosure is shown, wherein the busbar is removed.

[0024] In the various drawings, the same or corresponding reference numerals represent the same or corresponding parts. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0026] References to "one embodiment" or "an implementation" in the framework of this specification are intended to indicate that a particular configuration, structure, or characteristic described with respect to the embodiment is included in at least one embodiment. Therefore, phrases such as "in an embodiment," "in one embodiment," etc., which may appear in various aspects of this specification, do not necessarily refer to exactly the same embodiment. Furthermore, particular configurations, structures, or characteristics may be combined in any appropriate manner in one or more embodiments.

[0027] The term "including" and its variations used in this document represent open inclusion, that is, "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one other embodiment". Terms such as "upper", "lower", "front", and "rear" indicating placement or positional relationships are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the principles of the present disclosure, and do not indicate or imply that the referred elements must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be understood as limitations on the present disclosure.

[0028] Figure 1 The overall schematic diagram of the switchgear 1 according to the embodiment of the present disclosure is shown. The switchgear 1 can be implemented in the form of a switch cabinet, for example, in which various switch devices (such as circuit breakers, etc.), a multiphase busbar 2 for transmitting power, and a transformer 30 for detecting electrical parameters of the busbar can be arranged. As an example, the transformer 30 can be a current transformer or a voltage transformer, or other electrical parameter measurement devices.

[0029] The switchgear 1 generally includes a multiphase busbar 2 (three phases in the illustrated embodiment) and includes a plurality of branch branches. A plurality of transformers 30 are arranged in the switchgear to sense the electrical parameters flowing through the busbar. In order to sense the electrical parameters, the transformer 30 generally allows the busbar to pass through the transformer so that the primary coil in the transformer can surround the busbar. However, the density of the equipment inside the switchgear is extremely high, and the space is extremely valuable, and there is not enough space to freely place the position of the transformer 30.

[0030] Instead of fixing the mutual inductor 30 to the frame of the switch cabinet, a space-saving layout method is to install the mutual inductor 30 directly to the busbar 2, and support the mutual inductor 30 with the help of the structural strength of the busbar 2. However, the current implementation scheme is not satisfactory. On the one hand, considering the frequent vibrations suffered in the switch cabinet, the mutual inductor must be able to resist various vibrations and be firmly fixed to the busbar 2; on the other hand, the shape of the busbar may not be a regular shape, such as a C-shape, a tube shape, etc., which further increases the difficulty of fixing the mutual inductor 30 to the busbar 2. According to the present disclosure, a device for fixing a mutual inductor to a busbar is provided, which has a simple structure, is easy to implement and ensures sufficient strength. The device according to an embodiment of the present disclosure is described in detail below in conjunction with the accompanying drawings.

[0031] Figure 2 and Figure 3 The three-dimensional schematic diagram and the top view respectively show the state where the mutual inductor and the busbar are fixed together using the device for fixing the mutual inductor to the busbar according to the embodiment of the present disclosure. Figure 2 and Figure 3 As shown, the transformer 30 may include an opening 34 suitable for the busbar 2 to pass therethrough. The device may include one or more intermediate adapters 10, including two intermediate adapters 10a, 10b in the illustrated embodiment. Each intermediate adapter 10 is at least partially disposed in the opening 34. The transformer 30 is fixed to the busbar 2 via one or more intermediate adapters 10. According to the present disclosure, by introducing the intermediate adapter, the transformer can be conveniently and securely fixed to the busbar.

[0032] In some embodiments, Figure 2 and Figure 3As shown, the intermediate adapter 10 may include a first intermediate adapter 10a and a second intermediate adapter 10b. On a first side of the busbar 2, the mutual inductor 30 is fixed to the first intermediate adapter 10a, and on a second side of the busbar 2 opposite to the first side, the mutual inductor 30 is fixed to the second intermediate adapter 10b. Thus, the busbar 2 is clamped between the first intermediate adapter 10a and the second intermediate adapter 10b, and the weight of the mutual inductor 30 is borne by the static friction between the busbar and the first intermediate adapter 10a and the second intermediate adapter 10b. In the illustrated embodiment, the first intermediate adapter 10a and the second intermediate adapter 10b are arranged in a mirror image to each other, and it should be understood that this is merely exemplary, and the first intermediate adapter 10a and the second intermediate adapter 10b may be asymmetrical in shape according to the shape of the busbar 2.

[0033] In some embodiments, Figure 2 and Figure 3 As shown, each intermediate adapter 10 may include a main body 11. The main body 11 may be formed in a contoured shape. In the illustrated embodiment, the main body 11 includes a first contoured portion adjacent to the busbar 2 and a second contoured portion located on the opposite side. The shape of the first contoured portion at least partially matches the shape of the busbar 2, thereby increasing the friction between the shape of the first contoured portion and the busbar 2.

[0034] In some embodiments, Figure 2 and Figure 3 As shown, the first profiling portion may include an arcuate profile, which is particularly beneficial when the shape of the busbar 2 includes an arcuate profile. It should be understood that the shape of the busbar 2 shown in the figure is merely exemplary, and the busbar can be formed into other shapes, such as rectangular rows, C-shaped, V-shaped and other shapes. In some embodiments, the surface of the first profiling portion that fits the busbar 2 can be provided with a texture structure to further increase the friction. The second profiling portion can be formed into a shape suitable for matching the opening 34 of the mutual inductor 30. In some embodiments, the second profiling portion may include a rectangular or cube profile. This is particularly beneficial when the opening 34 of the mutual inductor 30 is a square opening.

[0035] In some embodiments, Figure 2 and Figure 3 As shown, the device may further include one or more first threaded fasteners 40. The transformer 30 may include one or more fixing brackets 32, which may be arranged at a position that is convenient for a user to contact, such as the top or bottom of the transformer 30. The first contoured portion of the main body 11 of the intermediate adapter 10 may be provided with a first threaded hole 12 (see Figure 5 and Figure 6 The first threaded fastener 40 may be screwed into the first threaded hole 12 to fix the mutual inductor 30 to the intermediate adapter 10 .

[0036] In the illustrated embodiment, Figure 3 As shown, on the upper side of the busbar 2, the mutual inductor 30 is fixed to the first intermediate adapter 10a by using two fixing brackets 32 and two threaded fasteners 40 located on the upper side of the mutual inductor 30. Similarly, on the lower side of the busbar 2, the mutual inductor 30 is fixed to the second intermediate adapter 10b by using two fixing brackets 32 and two threaded fasteners 40 located on the lower side of the mutual inductor 30. It should be understood that the illustrated embodiment is merely exemplary, and other numbers of fixing brackets 32 and threaded fasteners 40 may be arranged according to the shape of the busbar 2.

[0037] Figure 4 FIG. 2 shows a schematic diagram of the structure of a mutual inductor according to an embodiment of the present disclosure. Figure 4 As shown, the mutual inductor 30 may include an opening 34. In the illustrated embodiment, the opening 34 is a rectangular opening. This is merely exemplary. In other embodiments, the opening 34 may be a circular opening or an opening of other shapes. Eight fixing brackets 32 are also shown in the figure. It should be understood that the form, position and number of the fixing brackets 32 are merely exemplary.

[0038] Figure 5 and Figure 6 The structural details of the intermediate adapter 10 according to the embodiment of the present disclosure are shown respectively. In some embodiments, as Figure 5 and Figure 6 As shown, the first threaded hole 12 is formed at a position close to the longitudinal end of the intermediate adapter 10. The longitudinal direction here refers to the extension direction of the busbar 2. Considering that the intermediate adapter 10 is located in the opening 34 of the transformer 30, the first threaded hole 12 is formed at a position close to the longitudinal end of the intermediate adapter 10, which can facilitate the user to screw the threaded fastener 40. In some embodiments, the first threaded hole 12 can be a blind hole. In some embodiments, the first surface 15 where the first threaded hole 12 is located can be a flat surface, which should be understood to be merely exemplary, and the first surface 15 can be a surface of other shapes.

[0039] In some embodiments, Figure 5 and Figure 6As shown, the main body 11 may also include at least one second threaded hole 14 that passes through the main body 11. Accordingly, the device may also include at least one second threaded fastener (not shown). The second threaded fastener can be screwed into the second threaded hole 14 to fix the intermediate adapter 10 to the busbar 2. This is particularly beneficial when the weight of the transformer is large. Since the intermediate adapter 10 is fixed to the busbar 2, and the transformer 30 is fixed together with the intermediate adapter 10, the transformer 30, the intermediate adapter 10 and the busbar 2 can be fixed as a whole, which significantly enhances the strength of the transformer 30. The second threaded hole 14 is a through hole to allow the second threaded fastener to partially enter the busbar 2. In some embodiments, the second threaded hole 14 is formed at a position close to the longitudinal middle portion of the intermediate adapter 10. When fixing the transformer, the intermediate adapter 10 can be fixed to the busbar 2 first, and then the transformer 30 can be fixed to the intermediate adapter 10. In some embodiments, as Figure 3 As shown, when the intermediate adapter 10 is fixed to the busbar 2, a gap may be formed between the main body and the mutual inductor 30. The gap may, for example, leave a certain space for the second threaded fastener.

[0040] In some embodiments, Figure 5 and Figure 6 As shown, the intermediate adapter 10 further includes a protrusion 16 protruding laterally from the main body 11. The size of the protrusion 16 is configured such that when the main body 11 is clamped between the transformer 30 and the busbar 2, the protrusion 16 can at least partially abut against the transformer 30 longitudinally. With the protrusion 16, there are advantages in the installation of the transformer. During installation, after the transformer 30 is put on the busbar 2 from one end, a predetermined position can be selected to place the intermediate adapter 10, and the intermediate adapter 10 can be placed in a predetermined position. Figure 5 In the state shown, the intermediate adapter 10 is arranged around the busbar 2. Then, the transformer 30 is arranged around the intermediate adapter 10. At this time, if the protrusion 16 is not provided, there is a risk that the intermediate adapter 10 falls from the opening 34. By providing the protrusion 16, the protrusion 16 can prevent the intermediate adapter 10 from falling during fixing, and it is convenient for the user to operate to fix the threaded fastener 40.

[0041] In addition, although each operation is described in a specific order, this should be understood as requiring such operation to be performed in the specific order shown or in a sequential order, or requiring that all illustrated operations should be performed to obtain desired results. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single implementation in combination. On the contrary, the various features described in the context of a single implementation can also be implemented in multiple implementations individually or in any suitable sub-combination mode.

[0042] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0043] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A device for fixing a mutual inductor to a busbar, the mutual inductor (30) comprising an opening (34) suitable for the busbar (2) to pass therethrough, characterized in that: The device comprises: at least one intermediate adapter (10), each of the intermediate adapters (10) being at least partially disposed in the opening (34), wherein the mutual inductor (30) is fixed to the busbar (2) via the at least one intermediate adapter (10); Wherein the at least one intermediate adapter (10) comprises: A first intermediate adapter (10a) and a second intermediate adapter (10b); The mutual inductor (30) is fixed to the first intermediate adapter (10a) on a first side of the busbar (2), and the mutual inductor (30) is fixed to the second intermediate adapter (10b) on a second side of the busbar (2) opposite to the first side.

2. The device according to claim 1, characterized in that Each intermediate adapter (10) comprises a main body (11), wherein the main body (11) comprises a first contoured portion adjacent to the busbar (2) and a second contoured portion located on the opposite side, wherein the shape of the first contoured portion at least partially matches the shape of the busbar (2), and the second contoured portion further comprises at least one first threaded hole (12); The device further comprises at least one first threaded fastener (40), each first threaded fastener (40) being adapted to be received in a corresponding first threaded hole (12) to fix the transformer (30) to the intermediate adapter (10), wherein when the first threaded fastener (40) is fixed in place, the body (11) of the intermediate adapter (10) is clamped between the transformer (30) and the busbar (2).

3. The device according to claim 2, characterized in that The at least one first threaded hole (12) is formed at a position close to a longitudinal end of the intermediate adapter (10), wherein the longitudinal direction is consistent with an extending direction of the busbar (2).

4. The device according to claim 2, characterized in that The second contoured portion comprises a first surface (15), the first threaded hole (12) is arranged at the first surface (15), and the first surface (15) comprises a flat surface.

5. The device according to claim 2, characterized in that The first threaded hole (12) is a blind hole.

6. The device according to claim 2, characterized in that The main body (11) further comprises at least one second threaded hole (14) passing through the main body (11); The device also includes at least one second threaded fastener adapted to be received in the at least one second threaded hole (14) to secure the intermediate adapter (10) to the busbar (2).

7. The device according to claim 6, characterized in that The second threaded hole (14) is formed near the longitudinal middle portion of the intermediate adapter (10).

8. The device according to claim 2, characterized in that Each of the intermediate adapters (10) further comprises a protrusion (16) protruding laterally from the main body (11), the size of the protrusion (16) being configured such that when the main body (11) is clamped between the transformer (30) and the busbar (2), the protrusion (16) can at least partially abut longitudinally against the transformer (30).

9. The device according to claim 2, characterized in that The second contoured portion includes an outline of a cuboid or a cube.

10. The device according to claim 2, characterized in that The first contoured portion includes an arcuate profile.

11. The device according to any one of claims 1 to 10, characterized in that The transformer includes at least one of a current transformer and a voltage transformer.

12. A switch device, characterized in that: include: Busbars (2); at least one mutual inductor (30); as well as A device for fixing a transformer (30) to the busbar (2) according to any one of claims 1 to 11.

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