Contact seat of isolating switch
By using a combined design of epoxy resin castable and conductor in the contact holder of the isolating switch, the problem of poor insulation performance in the prior art is solved, better insulation performance and installation convenience are achieved, and the circuit is ensured security and reliability.
Patent Information
- Application Number
- CN202420957473.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-06
AI Technical Summary
The insulation performance of the contact seat of the existing isolating switch is unreliable, resulting in small three-phase insulation spacing and poor phase insulation performance, which affects the safety of circuit maintenance and maintenance personnel.
Using a contact seat design including an epoxy resin castable and a conductor, the conductor extends into the insulating cover and cooperates with the isolation knife, forming an insulating space between the insulating baffles, and the wiring part is arranged between the insulating baffles, and the insulating cover is placed between the insulating baffles. Multiple grooves and reinforcement ribs are provided inside, and copper inserts and umbrella skirts are provided on the mount to enhance insulation performance and overall strength.
The phase insulation spacing of the contact seat of the isolating switch is increased, the insulation performance is improved, the structure is simple, the performance is stable and reliable, and the overall strength and installation convenience are enhanced.
Smart Images
Figure CN222233511U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an isolating switch, in particular to a contact seat of the isolating switch. Background Art
[0002] At present, many large-scale power consumption sites have been using ring network cabinets on a large scale; the ring network cabinet has a simple structure, safe and reliable operation, low maintenance frequency and low operating costs. Compared with traditional switch cabinets, the advantages are very prominent. In the technology of ring network cabinets, isolating switches are widely used. As a circuit switch in the ring network cabinet, the isolating switch not only plays the role of an ordinary switch, but also ensures the reliable grounding of the safety break and the lower end of the isolation, which absolutely guarantees the safety of circuit maintenance and repair personnel. It is one of the very important components in the ring network cabinet. The insulation performance of the contact seat of the existing isolating switch is unreliable, resulting in a small three-phase insulation distance of the isolating switch and unreliable phase-to-phase insulation performance. Summary of the invention
[0003] The utility model aims to overcome the defects of the prior art and provide a contact seat of an isolating switch with simple structure, stable and reliable performance and reliable insulation performance.
[0004] To achieve the above-mentioned purpose, the utility model adopts a contact seat of an isolating switch, including an epoxy resin cast body and a conductor arranged in the epoxy resin cast body, one end of the epoxy resin cast body has an insulating cover, one end of the conductor has a contact portion extending in the insulating cover and cooperating with the isolating knife, the other end of the epoxy resin cast body has two insulating baffles, an insulating space is formed between the two insulating baffles, the other end of the conductor has a wiring portion extending in the insulating space, and the wiring portion is provided with a wiring hole.
[0005] The beneficial effects of the above structure are: the contact portion of the conductor is arranged in the insulating cover of the epoxy resin casting body, and the wiring portion of the conductor is arranged between the two insulating baffles of the epoxy resin casting body, so that the interphase insulation spacing of the contact seat of the disconnector can be increased, the interphase insulation performance is better, and the conductor is arranged in the epoxy resin casting body, the integrity is better, and the insulation performance is better. Therefore, the contact seat has the advantages of simple structure, stable and reliable performance, and reliable insulation performance.
[0006] In particular, a plurality of grooves are arranged at intervals at the lower ends of the corresponding contact pieces in the insulating cover, and the plurality of grooves can increase the creepage distance, which is beneficial to improving the insulation performance of the contact seat.
[0007] In particular, one end of the insulating cover has a vertically bent mounting seat, on which two copper inserts are respectively provided, and the two copper inserts are respectively provided with fixing screw holes. The mounting seat of the contact seat is fixed on the mechanism frame of the disconnector through the copper inserts, thereby facilitating the installation of the contact seat and making the installation more convenient.
[0008] In particular, an shed is provided on the outer wall of the mounting seat, which can increase the creepage distance of the mounting seat and is beneficial to improving the insulation performance of the contact seat.
[0009] In particular, reinforcing ribs are arranged between the mounting seat, the insulating cover and the epoxy resin casting body, and the reinforcing ribs can enhance the overall strength of the entire contact seat.
[0010] In particular, one end of the contact piece has two symmetrically distributed positioning contact blocks that match the isolation knife. The two positioning contact blocks of the contact piece play a positioning role for the isolation knife, which can ensure that the contact piece and the isolation knife can be reliably contacted.
[0011] In particular, the other end of the contact piece has two symmetrically distributed guiding inclined surfaces that match the isolation knife, and the guiding inclined surfaces guide the isolation knife, thereby ensuring that the isolation knife and the contact piece can be in reliable contact. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a stereoscopic diagram of an embodiment of the utility model from a first viewing angle.
[0013] Figure 2 This is a stereoscopic diagram from a second viewing angle of an embodiment of the utility model.
[0014] Figure 3 This is a cross-sectional view of an embodiment of the utility model. DETAILED DESCRIPTION
[0015] like Figures 1 to 3As shown, the embodiment of the utility model is a contact seat of an isolating switch, comprising an epoxy resin casting body 10, and a conductor 20 disposed in the epoxy resin casting body 10. The epoxy resin casting body 10 has an insulating cover 11 at one end, and the conductor 20 has a contact portion 21 extending in the insulating cover 11 and cooperating with the isolating knife at one end. The epoxy resin casting body 10 has two insulating baffles 12 at the other end, and an insulating space 120 is formed between the two insulating baffles 12. The conductor 20 has a wiring portion 22 extending in the insulating space 120 at the other end, and a wiring hole 220 is provided on the wiring portion 22. A plurality of grooves 111 are arranged at intervals at the lower end of the corresponding contact portion 21 in the insulating cover 11. A plurality of grooves can increase the creepage distance, which is beneficial to improving the insulation performance of the contact seat. The insulating cover 11 has a vertically bent mounting seat 13 at one end, and two copper inserts 14 are respectively provided on the mounting seat 13, and the two copper inserts 14 are respectively provided with fixing screw holes 141. The mounting seat of the contact seat is fixed to the mechanism frame of the disconnector through the copper inserts, so as to facilitate the installation of the contact seat and make the installation more convenient. An umbrella skirt 131 is provided on the outer wall of the mounting seat 13. The umbrella skirt can increase the creepage distance of the mounting seat, which is beneficial to improving the insulation performance of the contact seat. Reinforcing ribs 15 are provided between the mounting seat 13, the insulating cover 11 and the epoxy resin casting body 10. The reinforcing ribs can play a role in enhancing the overall strength of the entire contact seat.
[0016] like Figure 1 As shown, one end of the contact portion 21 has two positioning contact blocks 211 that are symmetrically distributed and matched with the isolation knife. The two positioning contact blocks of the contact portion play a positioning role for the isolation knife, which can ensure that the contact portion and the isolation knife can be reliably in contact. The other end of the contact portion 21 has two guiding inclined surfaces 212 that are symmetrically distributed and matched with the isolation knife. The guiding inclined surfaces play a guiding role for the isolation knife, thereby ensuring that the isolation knife and the contact portion can be reliably in contact.
[0017] The contact piece part of the conductor is arranged in the insulating cover of the epoxy resin casting body, and the wiring part of the conductor is arranged between the two insulating baffles of the epoxy resin casting body, so that the interphase insulation distance of the contact seat of the disconnector can be increased, the interphase insulation performance is better, and the conductor is arranged in the epoxy resin casting body, which has better integrity and better insulation performance. Therefore, the contact seat has the advantages of simple structure, stable and reliable performance, and reliable insulation performance.
Claims
1. A contact holder for an isolating switch, characterized in that: It includes an epoxy resin casting body and a conductor arranged in the epoxy resin casting body, wherein one end of the epoxy resin casting body is provided with an insulating cover, one end of the conductor is provided with a contact portion extending in the insulating cover and cooperating with an isolating knife, the other end of the epoxy resin casting body is provided with two insulating baffles, an insulating space is formed between the two insulating baffles, the other end of the conductor is provided with a wiring portion extending in the insulating space, and the wiring portion is provided with a wiring hole.
2. The contact holder of the isolating switch according to claim 1, characterized in that: A plurality of grooves are arranged at intervals at the lower ends of the corresponding contact pieces in the insulating cover.
3. The contact holder of the isolating switch according to claim 1 or 2, characterized in that: One end of the insulating cover is provided with a vertically bent mounting seat, on which two copper inserts are respectively arranged, and on which fixing screw holes are respectively arranged.
4. The contact holder of the isolating switch according to claim 3, characterized in that: An umbrella skirt is arranged on the outer wall of the mounting seat.
5. The contact holder of the isolating switch according to claim 3, characterized in that: Reinforcing ribs are arranged between the mounting seat, the insulating cover and the epoxy resin casting body.
6. The contact holder of the isolating switch according to claim 1 or 2, characterized in that: One end of the contact piece portion is provided with two positioning contact blocks which are symmetrically distributed and matched with the isolation blade.
7. The contact holder of the isolating switch according to claim 1 or 2, characterized in that: The other end of the contact piece portion is provided with two guiding inclined surfaces which are symmetrically distributed and matched with the isolation knife.