Insulator insert

Abstract

The utility model relates to the technical field of vacuum high-voltage insulation devices, in particular to an insulator insert, which comprises a sealing body, a pair of power terminals, a pair of grounding terminals, a connecting terminal, a copper ring and a pair of connecting wires. The pair of power terminals and the pair of grounding terminals are installed at the same side end of the sealing body and extend towards the interior of the sealing body. The connecting terminal is mounted at one end, away from the power terminal, of the sealing body; the copper ring is fixedly connected with the sealing body and comprises a first connecting part and a second connecting part which are separated in the axial direction. One side end parts of the pair of connecting wires respectively penetrate through the sealing body and are fixedly connected with the pair of power supply terminals, and the other side end parts are respectively connected with the first connecting part and the second connecting part. The combination of the sealing body and the copper ring is adopted as a structural main body, installation of other parts is achieved, and the overall structure is more convenient to manufacture and assemble; and the inner wall of the copper ring is provided with the annular contact spring, so that the plugging force is better, the conductivity is better, and the stability of the structure is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum high-voltage insulation devices, and in particular to an insulator insert. Background Technology

[0002] In vacuum high-voltage insulation devices, patent application number CN201810347766.5 provides a vacuum high-voltage insulator that solves the problems of existing vacuum high-voltage insulator devices being large in size and prone to destructive surface flashover when operating near the rated high voltage limit. However, it still has shortcomings, mainly in the following aspects:

[0003] First, the overall structure is a single piece, which results in low efficiency in manufacturing and assembly.

[0004] Second, the insertion and extraction force of the structure cannot be guaranteed, which in turn affects the conductivity stability.

[0005] Therefore, this invention develops an insulator insert to solve the problems existing in the prior art. Utility Model Content

[0006] The purpose of this invention is to provide an insulator insert to solve the problem of relatively poor stability in existing insulator structures.

[0007] The technical solution of this utility model is: an insulator insert, comprising:

[0008] sealed body;

[0009] A pair of power terminals and a pair of ground terminals are installed on the same side of the sealed body and extend into the interior of the sealed body;

[0010] A connecting terminal is installed at the end of the sealed body away from the power supply terminal; the ends of both the connecting terminal and the grounding terminal are installed on a grounding plate, which is embedded in the sealed body.

[0011] A copper ring is fixedly connected to the sealing body, and the interior of the copper ring is used to accommodate the connecting terminal; the copper ring includes a first connecting portion and a second connecting portion separated along the axial direction;

[0012] A pair of connecting wires, one end of each connecting wire passes through the sealing body and is fixedly connected to a pair of power terminals, and the other end of each connecting wire is connected to the first connecting part and the second connecting part.

[0013] Preferably, the sealing body has a recessed cavity at one end biased towards the connecting terminal, and the grounding piece is embedded in the inner end face of the recessed cavity.

[0014] Preferably, the inner wall of the cavity is stepped and forms at least one stepped surface; the end of the copper ring is embedded in part of the cavity and abuts against the stepped surface at the far end.

[0015] Preferably, a spacer is provided between the first connecting portion and the second connecting portion, and the spacer is annular.

[0016] Preferably, both the first connecting part and the second connecting part are provided with annular contact springs on their inner walls.

[0017] Preferably, the distribution direction of the pair of power terminals is perpendicular to that of the pair of ground terminals; the distribution direction of the pair of connecting wires is the same as that of the pair of power terminals.

[0018] Preferably, the connecting wire is bent to form a terminal connection end, a transition end, and a copper ring connection end;

[0019] The terminal connection end penetrates the sealing body and is connected to the power terminal; the copper ring connection end is embedded in the assembly groove opened on the outer wall of the copper ring; the transition ends of the pair of connecting wires are of different lengths.

[0020] Preferably, a groove is formed on the outer wall of the sealing body, and the transition end is accommodated in the groove.

[0021] Compared with the prior art, the advantages of this utility model are:

[0022] (1) The combination of the sealing body and the copper ring is used as the main structure and other components are installed, making the overall structure manufacturing and assembly more convenient; the inner wall of the copper ring is equipped with a ring-shaped contact spring, which has better insertion and extraction force and better conductivity, ensuring the stability of the structure.

[0023] (2) The sealing body has a recessed cavity at one end of the connection terminal. The inner wall of the cavity is stepped. The stepped surface at the very end is used for the copper ring to assemble and abut. The remaining stepped structure can effectively increase the creepage distance.

[0024] (3) The connecting wire can be formed by bending. One end is connected to the power terminal and the other end is connected to the copper ring. Since a pair of connecting wires are connected to the first and second connecting parts of the copper ring respectively, the two transition ends are of different lengths. The transition ends can be embedded in the groove on the outer wall of the sealed body, making the spatial layout more reasonable. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] Figure 1 This is a schematic diagram of the structure of an insulator insert as described in this utility model, viewed along one side of the connecting wire;

[0027] Figure 2 This is a schematic diagram of the structure of an insulator insert as described in this utility model, viewed along the connecting wire on the other side.

[0028] Figure 3 This is a cross-sectional view of an insulator insert according to the present invention along the distribution direction of a pair of power supply terminals;

[0029] Figure 4 This is a cross-sectional view of an insulator insert according to the present invention along the distribution direction of a pair of grounding terminals;

[0030] Figure 5 This is a schematic diagram of the structure of an insulator insert according to the present invention, viewed along the connecting terminal.

[0031] Among them: 1. Sealing body, 11. Inner recess, 12. Cavity, 121. Stepped surface, 13. Groove;

[0032] 2. Power terminals;

[0033] 3. Grounding terminal; 31. Grounding plate;

[0034] 4. Connecting terminals;

[0035] 5. Copper ring; 51. First connecting part; 52. Second connecting part; 53. Spacer; 54. Contact spring;

[0036] 6. Connecting wire; 61. Terminal connection end; 62. Transition end; 63. Copper ring connection end. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to specific embodiments:

[0038] like Figures 1-4 As shown, an insulator insert includes a sealing body 1, a pair of power terminals 2 and a pair of ground terminals 3, a connecting terminal 4, a copper ring 5, and a pair of connecting wires 6.

[0039] like Figure 1 , Figure 2 As shown, the sealing body 1 has a cylindrical structure, combined with Figure 3 , Figure 4 As shown, one end of the sealing body 1 forms an indentation 11, and the other end has an indented cavity 12. The inner wall of the cavity 12 is stepped and forms at least one stepped surface 121. In this embodiment, the inner wall of the cavity 12 has a total of three stepped surfaces 121. Of course, other numbers of stepped surfaces 121 can be provided in other embodiments.

[0040] A pair of power terminals 2 and a pair of ground terminals 3 are installed on the same side of the sealing body 1, that is, both are located at the end of the sealing body 1 biased towards the recessed portion, and extend into the interior of the sealing body 1, wherein the extension depth of the ground terminals 3 is greater than the extension depth of the power terminals 2. Combined with... Figure 1 As shown, the distribution direction of a pair of power terminals 2 and a pair of ground terminals 3 is perpendicular.

[0041] like Figures 3-5 As shown, the connecting terminal 4 is installed at the end of the sealed body 1 away from the power terminal 2, that is, the connecting terminal 4 is installed at the end biased towards the cavity 12; the ends of both the connecting terminal 4 and the grounding terminal 3 are installed on the grounding plate 31, and the grounding plate 31 is embedded in the sealed body 1. Specifically, as... Figure 4 As shown, the grounding piece 31 is embedded in the inner end face of the cavity 12, and the ends of the connecting terminal 4 and the grounding terminal 3 are both threadedly connected to the grounding piece 31.

[0042] The copper ring 5 is fixedly connected to the sealing body 1, and the interior of the copper ring 5 is used to accommodate the connecting terminal 4. In this embodiment, the end of the copper ring 5 is embedded in a portion of the cavity 12 and abuts against the stepped surface 121 at the outermost end. After embedding, the copper ring 5 and the sealing body 1 can be fixed by adhesive. After the copper ring 5 and the sealing body 1 are assembled, a partial space is formed in the cavity 12, and the inner wall of this space is also stepped, which can effectively increase the creepage distance.

[0043] The copper ring 5 includes a first connecting portion 51 and a second connecting portion 52 separated along the axial direction. In this embodiment, a spacer 53 is provided between the first connecting portion 51 and the second connecting portion 52, and the spacer 53 is annular. Annular contact springs 54 are provided on the inner walls of both the first connecting portion 51 and the second connecting portion 52, which improves the insertion and extraction force, improves the conductivity, and ensures the stability of the structure.

[0044] One end of each pair of connecting wires 6 passes through the sealing body 1 and is fixedly connected to a pair of power terminals 2, while the other end is connected to the first connecting part 51 and the second connecting part 52, respectively. Specifically, the distribution direction of the pair of connecting wires 6 is the same as the distribution direction of the pair of power terminals 2. The connecting wires 6 are bent to form a terminal connecting end 61, a transition end 62, and a copper ring connecting end 63; the terminal connecting end 61 passes through the sealing body 1 and is connected to the power terminals 2; the copper ring connecting end 63 is embedded in the assembly groove opened in the outer wall of the copper ring 5; since the pair of connecting wires 6 are respectively connected to the first connecting part 51 and the second connecting part 52 of the copper ring 5, the two transition ends 62 are of different lengths, and a groove 13 is opened on the outer wall of the sealing body 1, in which the transition ends 62 are accommodated, making the spatial layout more reasonable.

[0045] In summary, this utility model uses a combination of a sealing body 1 and a copper ring 5 as the main structural component, and enables the installation of other components, making the overall structure easier to manufacture and assemble. A ring-shaped contact spring 54 is provided on the inner wall of the copper ring 5, which provides better insertion and extraction force, better conductivity, and ensures the stability of the structure.

[0046] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. An insulator insert, characterized in that, include: Sealing body (1); A pair of power terminals (2) and a pair of ground terminals (3) are installed on the same side of the sealing body (1) and extend into the interior of the sealing body (1); A connecting terminal (4) is installed at the end of the sealing body (1) away from the power terminal (2); the ends of the connecting terminal (4) and the grounding terminal (3) are both installed on a grounding plate (31), and the grounding plate (31) is embedded in the sealing body (1); A copper ring (5) is fixedly connected to the sealing body (1), and the copper ring (5) is internally accommodated by the connecting terminal (4); the copper ring (5) includes a first connecting portion (51) and a second connecting portion (52) separated along the axial direction. A pair of connecting wires (6), one end of each of the connecting wires (6) passes through the sealing body (1) and is fixedly connected to the pair of power terminals (2), and the other end is connected to the first connecting part (51) and the second connecting part (52) respectively.

2. An insulator insert according to claim 1, characterized in that: The sealing body (1) has a recessed cavity (12) at one end biased towards the connecting terminal (4), and the grounding piece (31) is embedded in the inner end face of the recessed cavity (12).

3. An insulator insert according to claim 2, characterized in that: The inner wall of the cavity (12) is stepped and forms at least one stepped surface (121); the end of the copper ring (5) is embedded in part of the cavity (12) and abuts against the stepped surface (121) at the far end.

4. An insulator insert according to claim 1, characterized in that: A spacer (53) is provided between the first connecting part (51) and the second connecting part (52), and the spacer (53) is annular.

5. An insulator insert according to claim 1, characterized in that: Both the first connecting part (51) and the second connecting part (52) are provided with annular contact springs (54) on their inner walls.

6. An insulator insert according to claim 1, characterized in that: The distribution direction of the pair of power terminals (2) is perpendicular to that of the pair of ground terminals (3); the distribution direction of the pair of connecting wires (6) is the same as that of the pair of power terminals (2).

7. An insulator insert according to claim 6, characterized in that: The connecting wire (6) is bent to form a terminal connection end (61), a transition end (62) and a copper ring connection end (63). The terminal connection end (61) penetrates the sealing body (1) and is connected to the power terminal (2); the copper ring connection end (63) is embedded in the assembly groove opened on the outer wall of the copper ring (5); the transition ends (62) of the pair of connecting wires (6) are of different lengths.

8. An insulator insert according to claim 7, characterized in that: A groove (13) is provided on the outer wall of the sealing body (1), and the transition end (62) is accommodated in the groove (13).

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