Upper outgoing line seat structure of solid-sealed polar pole
The integrated forged upper lead-out socket structure, with cavity and through-hole design and injection molding, solves the problems of screw bending and partial discharge in the upper lead-out socket of the solid-sealed pole, improves processing accuracy and insulation, and reduces costs.
Patent Information
- Application Number
- CN202520283069.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-21
AI Technical Summary
The existing screw connection between the upper lead-out socket of the solid-sealed pole and the vacuum interrupter has problems such as the risk of screw bending, the risk of partial discharge, high processing difficulty and high cost.
The top lead seat structure is made of one piece and includes a cavity and through hole design. Combined with creepage area and notch, the cavity and through hole are filled by injection molding, which simplifies the processing steps and improves insulation.
It reduces the risk of screw bending, eliminates the hidden danger of partial discharge, improves processing accuracy and insulation, reduces manufacturing costs, and enhances product safety and production efficiency.
Smart Images
Figure CN223638281U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power equipment technical field especially relates to a solid seal pole's upper outgoing line seat structure. BACKGROUND
[0002] The solid seal pole is the pole that makes the vacuum arc-extinguishing chamber and the related conductive parts of circuit breaker embed in the solid insulation material such as epoxy resin simultaneously, forms the pole, and makes the whole circuit breaker pole become a whole component.
[0003] The upper outgoing line seat is arranged in the solid seal pole, the screw of the existing upper outgoing line seat and the vacuum arc-extinguishing chamber is too long, according to the attached Figure 1 And the attached Figure 2 It has the following shortcomings:
[0004] 1) the too long screw has the risk of being bent due to too large stress, which leads to insufficient compression force between the upper outgoing line seat and the vacuum arc-extinguishing chamber;
[0005] 2) there is a gap when the screw passes through the hole, and when the screw of the pole and the hole produce partial discharge, the partial discharge can easily damage the insulation stability of the solid seal pole, and the head of the screw is close to the upper end of the upper outgoing line seat, which shortens the safe creepage distance and further reduces the electrical performance of the solid seal pole;
[0006] 3) the upper outgoing line seat needs to be punched during processing to cooperate with the screw, and long and deep hole processing is difficult, which is easy to punch oblique or produce deviation of the shaft center, and affects the conductive contact;
[0007] 4) the processing cost is high, the deep hole processing consumes time and effort, and the cost is naturally high.
[0008] Therefore, the applicant has made beneficial design, found the method for solving the above problems, and the technical scheme to be introduced below is generated in this background. SUMMARY
[0009] The utility model discloses a kind of to overcome the deficiencies of the design of the above-mentioned traditional upper outgoing line seat, and provide a product of improving safety, improving production efficiency.
[0010] To solve the above problems, the utility model adopts the following technical scheme.
[0011] The utility model provides a structure of the upper outgoing line seat of the solid seal pole, including pole body, the upper outgoing line seat of integral forging, the upper outgoing line seat includes first wiring part, second wiring part, the first wiring part and second wiring part are perpendicular, one side of second wiring part is equipped with the cavity of accommodating screw, and is close to the end of second wiring part, the threaded hole is equipped with in the cavity close to the end of second wiring part, the other end of the cavity is equipped with through -hole, and is equipped with the creepage distance between the through -hole and the inner wall of cavity.
[0012] Preferably, one side of the through hole is provided with a notch, and the notch is on the same side as the entrance of the cavity.
[0013] Preferably, the first wiring part is provided with a connecting hole.
[0014] Preferably, the pole body is connected and fixed with the upper outgoing line seat by injection molding, and fills the through hole and the cavity.
[0015] Beneficial effects:
[0016] Compared with the prior art, the utility model has the beneficial effects that:
[0017] (1) the utility model discloses a cavity and a notch through hole design, which significantly reduces the amount of forging material and manufacturing cost, realizes the overall forging of the upper outgoing line seat, only needs to complete the thread hole finishing, reduces the processing steps.
[0018] (2) the utility model discloses an optimized thread hole depth design, effectively avoids the screw installation bending risk, simplifies the drilling process, and improves the hole precision.
[0019] (3) the utility model discloses the structure layout of the cavity and the through hole forms a self-filling effect when the epoxy resin is injection molded, eliminates the partial discharge hidden danger after complete filling of the cavity and the through hole, increases the creepage distance and improves the insulation of the product, so that the product has the advantages of improving safety. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is the cross-sectional structure schematic diagram of prior art;
[0021] Figure 2 It is the cross-sectional structure schematic diagram of prior art after assembly Figure 1 ;
[0022] Figure 3 It is the structure schematic diagram of the utility model discloses a structure of the upper outgoing line seat of the solid seal pole;
[0023] Figure 4 It is the cross-sectional structure schematic diagram of the utility model discloses a structure of the upper outgoing line seat of the solid seal pole after assembly Figure 2 ;
[0024] The correspondence between the reference signs in the drawings and the component names is as follows:
[0025] Reference sign: 1, pole body; 2, upper outgoing line seat; 3, first wiring part; 4, second wiring part; 5, vacuum interrupter; 6, screw; 31, connecting hole; 41, cavity; 42, threaded hole; 43, through hole; 44, creepage zone; 431, notch. DETAILED DESCRIPTION
[0026] The technical solutions of the utility model will be clearly and completely described below in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.
[0027] In the description of the utility model, it should be understood that the directions or position relations indicated by the terms such as "upper", "lower", "left", "right" are the directions or position relations shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the utility model.
[0028] In the embodiments of the utility model, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects have an "or" relationship.
[0029] REFERENCE EXAMPLE Figure 3 、 Figure 4 The upper outgoing line seat structure of the solid-sealed pole comprises a pole body 1 and an integrally forged upper outgoing line seat 2. The upper outgoing line seat 2 comprises a first wiring part 3 and a second wiring part 4. The first wiring part 3 is in a perpendicular relationship with the second wiring part 4. One side of the second wiring part 4 is provided with a cavity 41 for accommodating a screw 6 and is close to one end of the second wiring part 4. The cavity 41 is provided with a threaded hole 42 close to one end of the second wiring part 4. The other end of the cavity 41 is provided with a through hole 43. The through hole 43 is provided with a creepage zone 44 between the inner wall of the cavity 41 and the through hole 43. The structure adopts the design of the cavity 41 and the through hole 43 and the notch 431, significantly reduces the amount of forging material and the manufacturing cost, realizes the integral forging of the upper outgoing line seat 2, only needs to complete the finish machining of the threaded hole 42, reduces the machining steps, optimizes the depth design of the threaded hole 42, effectively avoids the bending risk of the screw 6 installation, simplifies the drilling process, and improves the hole position accuracy.
[0030] It is worth mentioning that one side of the through hole 43 is provided with a notch 431, the notch 431 is located at the same side of the inlet of the cavity 41, the notch 431 facilitates the liquid epoxy resin to enter into the through hole 43;
[0031] It is worth mentioning that the first wiring part 3 is provided with a connecting hole 31, the connecting hole 31 is connected and fixed with the static contact;
[0032] It is worth mentioning that the pole body 1 is connected and fixed with the upper terminal block 2 through injection molding, and fills the through hole 43 and the cavity 41, the structure layout of the cavity 41 and the through hole 43 makes the epoxy resin injection form a self-filling effect when injection, after completely filling the cavity 41 and the through hole 43, the local discharge hidden danger is eliminated, the creepage distance is increased and the insulation of the product is improved.
[0033] The above design scheme can make the product realize the advantages of improving safety, improving production efficiency and reducing manufacturing cost.
[0034] The above content is further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope determined by the claims of the utility model.
Claims
1. A structure of an upper terminal block of a dead tank circuit breaker, characterized by: The pole body (1) is integrally forged with an upper terminal block (2), the upper terminal block (2) comprises a first terminal part (3) and a second terminal part (4), the first terminal part (3) is perpendicular to the second terminal part (4), one side of the second terminal part (4) is provided with a cavity (41) for accommodating a screw (6), and the cavity (41) is close to one end of the second terminal part (4), the cavity (41) is provided with a threaded hole (42) close to one end of the second terminal part (4), the other end of the cavity (41) is provided with a through hole (43), and the through hole (43) and the inner wall of the cavity (41) are provided with a creepage distance (44).
2. The upper terminal block structure of a deadfront pole, according to claim 1, characterized in that: One side of the through hole (43) is provided with a notch (431), and the notch (431) is on the same side as the entrance of the cavity (41).
3. The upper terminal block structure of a deadfront pole, according to claim 1, characterized in that: The first terminal part (3) is provided with a connecting hole (31).
4. The upper terminal block structure of a deadfront pole, as recited in claim 1, characterized in that: The pole body (1) is connected and fixed with the upper terminal block (2) by injection molding, and fills the through hole (43) and the cavity (41).