Protective device for combined mutual inductor

Abstract

The utility model discloses a protection device for a combined mutual inductor, belongs to the technical field of combined mutual inductors, and aims to solve the problems that in the prior art, the combined current mutual inductor is not externally provided with a protection device and only depends on a shell for protection, but internal components of the mutual inductor are arranged very compactly, so that when the shell is damaged due to impact, the protection device cannot be used for protecting the combined current mutual inductor. And an internal winding is easy to damage and cannot be repaired. Comprising a base mounting plate, mounting mechanisms are mounted on the four sides of the base mounting plate, a combined transformer body is mounted in the middle of the upper portion of the base mounting plate, insulating columns are mounted on the two sides of the upper portion of the combined transformer body, and protection mechanisms are mounted on the two sides of the upper portion of the base mounting plate; and the protection mechanism comprises a sliding assembly and two protection shells, inclined ventilation frames are arranged on the outer sides of the two protection shells respectively, the sliding assembly is installed on the two sides of the upper portion of the base installation plate, and locking assemblies are installed on the two sides of the two protection shells.

Description

Technical Field

[0001] This utility model belongs to the technical field of combined current transformers, and specifically relates to a protective device for combined current transformers. Background Technology

[0002] A current transformer is an instrument that measures a large primary current by converting a small secondary current into a large primary current based on the principle of electromagnetic induction. A current transformer consists of a closed iron core and windings.

[0003] Currently, the combined current transformers on the market do not have external protective devices installed; they rely solely on the casing for protection. However, because the internal components of the transformer are very compact, when the casing is damaged by an impact, the internal windings are easily damaged beyond repair. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a protective device for combined current transformers, which aims to solve the problem that the existing combined current transformers do not have external protective devices installed, and they only rely on the shell for protection. However, because the internal components of the transformer are very compact, when the shell is damaged by an impact, the internal windings are easily damaged beyond repair.

[0006] (2) Technical solution

[0007] To address the aforementioned technical problems, this utility model provides a protective device for a combined current transformer, comprising a base plate, mounting mechanisms installed on the four sides of the base plate, a combined current transformer body installed on the upper center of the base plate, insulating posts installed on the upper two sides of the combined current transformer body, and protective mechanisms installed on the upper two sides of the base plate. The protective mechanisms include a sliding assembly and two protective housings, with oblique ventilation frames provided on the outer sides of each of the two protective housings. The sliding assembly is installed on the upper two sides of the base plate, and locking assemblies are installed on the two sides of the two protective housings.

[0008] Furthermore, the sliding assembly includes two sets of guide grooves, which are respectively located on the upper sides of the base plate. Protective housings are provided in the middle and above the two sets of guide grooves. Limiting guide rails are fixed on both sides of the upper part of the base plate. Guide grooves are opened at the front section of both sides of the bottom end of the two protective housings. Reserved holes are opened on the opposite surfaces above the two protective housings. Sealing gaskets are provided on the opposite surfaces of the two protective housings.

[0009] Furthermore, the guide groove at the bottom of the protective shell forms a movable guiding connection with the limiting guide rail.

[0010] Furthermore, the protective housing is provided in pairs, and the size of the relative reserved hole of the pair of protective housings in the spliced ​​state matches the size of the opposite part of the insulating post.

[0011] Furthermore, the locking assembly includes fixing blocks, which are respectively disposed on both sides of the inner end of the two protective shells. A second screw groove is provided in the middle of the two pairs of fixing blocks, and a second locking bolt is screwed in the middle of the second screw groove.

[0012] Furthermore, the mounting mechanism includes side fixing blocks, which are distributed around the four perimeters of the base plate. A first screw groove is provided in the middle of the four side fixing blocks, and a first locking bolt is screwed into the middle of the first screw groove.

[0013] Furthermore, the first locking bolt and the first screw groove are connected by a threaded connection.

[0014] Furthermore, the inclined ventilation frame is equidistantly distributed along the outer end faces of the two protective shells.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model allows personnel to install the combined current transformer body onto the upper center of a fixed base plate. Then, two protective housings are slid into the pre-set guide grooves on both sides of the base plate. The guide grooves at the bottom of the two protective housings slide stably along the pre-set limiting guide rails. When the inner ends of the two protective housings are in contact, personnel can use two sets of second screw grooves and second locking bolts to achieve stable positioning between the two protective housings. The design of the limiting guide rails surrounding the two protective housings and the sealing gaskets on their respective inner sides effectively improves the sealing effect at the joint after the two protective housings are assembled. In this state, the two protective housings effectively protect the combined current transformer body contained within. Furthermore, this splicing design provides portability and considerable space and convenience for personnel operation, whether for subsequent maintenance or replacement of the combined current transformer body.

[0018] The present invention allows the workers to pre-install the base plate on the original installation point of the combined transformer body. The installation method relies on the first screw groove and the first locking bolt provided on the four sides of the base plate to achieve threaded installation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of a three-dimensional partial structure;

[0022] Figure 3 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0023] Figure 4 for Figure 1 Schematic diagram of the structure at point B.

[0024] The markings in the attached diagram are as follows: 1. Base plate; 2. Mounting mechanism; 21. Side fixing block; 22. First screw groove; 23. First locking bolt; 3. Combined transformer body; 4. Insulating column; 5. Protective mechanism; 51. Sliding assembly; 511. Guide groove; 512. Protective shell; 513. Limiting guide rail; 514. Guide groove; 515. Reserved hole; 516. Sealing gasket; 52. Locking assembly; 521. Fixing block; 522. Second screw groove; 523. Second locking bolt; 6. Angled ventilation frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This specific embodiment is a protective device for a combined instrument transformer, and its structural schematic diagram is shown below. Figures 1 to 4As shown, the system includes a base plate 1, with mounting mechanisms 2 installed on the four sides of the base plate 1. A combined current transformer body 3 is installed in the upper center of the base plate 1, with insulating posts 4 installed on the upper two sides of the combined current transformer body 3. Protective mechanisms 5 are installed on the upper two sides of the base plate 1. The mounting mechanism 2 includes side fixing blocks 21, which are distributed on the four sides of the base plate 1. A first threaded groove 22 is provided in the middle of the four side fixing blocks 21, and a first locking bolt 23 is screwed into the middle of the first threaded groove 22. The first locking bolt 23 and the first threaded groove 22 are connected by a threaded installation. The operator pre-installs the base plate 1 at the original installation point of the combined current transformer body 3. The installation method relies on the first threaded groove 22 and the first locking bolt 23 provided on the four sides of the base plate 1 to achieve threaded installation.

[0027] The protective mechanism 5 includes a sliding assembly 51 and two protective housings 512. Each of the two protective housings 512 has an oblique ventilation frame 6 on its outer side. The sliding assembly 51 is installed on both sides of the upper part of the base plate 1. The sliding assembly 51 includes two sets of guide grooves 511, which are respectively located on both sides of the upper part of the base plate 1. Protective housings 512 are provided in the middle and above the two sets of guide grooves 511. The oblique ventilation frames 6 are equidistantly distributed along the outer end faces of the two protective housings 512. Limiting guide rails 513 are fixed on both sides of the upper part of the base plate 1. Two protective housings 512 are located at their bottom ends. The front section of the side is provided with a guide groove 514. The guide groove 514 at the bottom of the protective shell 512 forms a movable guide connection with the limiting guide rail 513. The upper opposite surfaces of the two protective shells 512 are provided with reserved holes 515. The opposite surfaces of the two protective shells 512 are provided with sealing gaskets 516. A pair of protective shells 512 are provided. When the pair of protective shells 512 are spliced, the size of their relative reserved holes 515 matches the size of the opposite part of the insulating post 4. Locking components 52 are installed on both sides of the two protective shells 512. The locking components 52 include fixing blocks 521, and the fixing blocks 521... 21 are respectively located on both sides of the inner end of the two protective housings 512. The middle of the two pairs of fixing blocks 521 is provided with a second screw groove 522, and a second locking bolt 523 is screwed into the middle of the second screw groove 522. The personnel install the combined current transformer body 3 on the upper middle part of the base plate 1 that has been fixed. Then, the two protective housings 512 are slid into the guide grooves 511 set on both sides of the base plate 1. Then, the guide grooves 514 set at the bottom of the two protective housings 512 will slide stably along the preset limit guide rails 513. When the inner ends of the two protective housings 512 are in contact, the personnel can rely on the two The second screw groove 522 and the second locking bolt 523 are used to achieve stable positioning between the two protective shells. The design of the two protective shells 512 being surrounded by the limiting guide rail 513 and the sealing gaskets 516 on their respective inner sides can effectively improve the sealing effect at the connection point after the two protective shells 512 are spliced ​​together. In this state, the two protective shells 512 can effectively protect the combined current transformer body 3 contained therein. Moreover, this splicing design can provide portability for subsequent maintenance or replacement of the combined current transformer body 3, while also providing a lot of space and convenience for personnel operation.

[0028] Working principle: The operator first installs the base plate 1 at the original installation point of the combined transformer body 3. The installation relies on the first threaded groove 22 and the first locking bolt 23 on the four sides of the base plate 1 for threaded installation. Next, the operator installs the combined transformer body 3 onto the upper center of the already fixed base plate 1. Then, the two protective housings 512 are slid into the pre-set guide grooves 511 on both sides of the base plate 1. The guide grooves 514 at the bottom of the two protective housings 512 then slide stably along the pre-set limit guide rails 513. When the inner ends of the two protective housings 512 are in contact, the operator... The two sets of second screw grooves 522 and second locking bolts 523 can be used to achieve stable positioning between the two protective shells. The design of the two protective shells 512 being surrounded by limiting guide rails 513 and the sealing gaskets 516 on their respective inner sides can effectively improve the sealing effect at the connection point after the two protective shells 512 are spliced ​​together. In this state, the two protective shells 512 can effectively provide good protection for the combined current transformer body 3 contained therein. Moreover, this splicing design can provide portability for subsequent maintenance or replacement of the combined current transformer body 3, while also providing a lot of space and convenience for personnel operation.

[0029] All technical features in this embodiment can be freely combined according to actual needs.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective device for a combined current transformer, comprising a base plate (1), characterized in that, The four sides of the base plate (1) are equipped with mounting mechanisms (2), and the upper center of the base plate (1) is equipped with a combined current transformer body (3). Insulating columns (4) are installed on the upper two sides of the combined current transformer body (3). Protective mechanisms (5) are installed on the upper two sides of the base plate (1). The protective mechanism (5) includes a sliding assembly (51) and two protective shells (512) of its components. The outer sides of the two protective shells (512) are respectively provided with oblique ventilation frames (6). The sliding assembly (51) is installed on the upper two sides of the base plate (1). Locking assemblies (52) are installed on the two sides of the two protective shells (512).

2. The protective device for a combined current transformer according to claim 1, characterized in that, The sliding assembly (51) includes two sets of guide grooves (511), which are respectively located on the upper sides of the base plate (1). The middle and upper parts of the two sets of guide grooves (511) are provided with protective shells (512). Limiting guide rails (513) are fixed on the upper sides of the base plate (1). The front sections of the bottom sides of the two protective shells (512) are provided with guide grooves (514). The opposite surfaces on the upper sides of the two protective shells (512) are provided with reserved holes (515). The opposite surfaces of the two protective shells (512) are provided with sealing gaskets (516).

3. A protective device for a combined current transformer according to claim 2, characterized in that, The guide groove (514) at the bottom of the protective shell (512) forms a movable guide connection with the limiting guide rail (513).

4. A protective device for a combined current transformer according to claim 2, characterized in that, The protective housing (512) is provided in pairs, and the size of the relative reserved hole (515) of the pair of protective housings (512) in the spliced ​​state matches the size of the opposite part of the insulating column (4).

5. A protective device for a combined instrument transformer according to claim 1, characterized in that, The locking assembly (52) includes a fixing block (521), and the fixing blocks (521) are respectively disposed on both sides of the inner end of the two protective shells (512). A second screw groove (522) is provided in the middle of the two pairs of fixing blocks (521), and a second locking bolt (523) is screwed in the middle of the second screw groove (522).

6. A protective device for a combined instrument transformer according to claim 1, characterized in that, The installation mechanism (2) includes side fixing blocks (21), and the side fixing blocks (21) are distributed on the four sides of the base plate (1). A first screw groove (22) is opened in the middle of the four side fixing blocks (21), and a first locking bolt (23) is screwed in the middle of the first screw groove (22).

7. A protective device for a combined current transformer according to claim 6, characterized in that, The first locking bolt (23) and the first screw groove (22) are connected by a threaded installation.

8. A protective device for a combined current transformer according to claim 1, characterized in that, The inclined ventilation frame (6) is equidistantly arranged along the outer end faces of the two protective shells (512).

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