A new material for a wall penetrating connector

Abstract

The application relates to the field of high-voltage switch devices of power systems, and discloses a through-wall connecting piece of a new material, a side-out bus sleeve assembly comprising a bus sleeve and a center insert fixed in a center hole, a plurality of interval distributed umbrella skirts extending on the outer circumferential surface of the bus sleeve in the axial direction of the bus sleeve, a first flange and a second flange fixedly connected outside the connecting end of the bus sleeve, and the bus sleeve, the umbrella skirts, the first flange and the second flange being integrally cast by thermoplastic engineering plastics. In the production process of the device, the bus sleeve, the umbrella skirts, the first flange and the second flange, the inserted connecting insert and the center insert are integrally cast by thermoplastic engineering plastics, the thermoplastic engineering plastics is used to replace epoxy resin, the insulation function of the product is realized, the recycling problem is solved, and the stability and the service life of the device can be improved through the integrated casting and the setting of the annular clamping groove of the center insert and the annular clamping protrusion of the center hole.

Description

Technical Field

[0001] This application belongs to the technical field of high-voltage switchgear in power systems, specifically a wall-penetrating connector made of a new material. Background Technology

[0002] Gas-insulated switchgear, as a type of high-voltage power equipment, is widely used in substations, rail transit, and industrial power distribution systems. Its core feature is that it seals components such as circuit breakers, disconnectors, grounding switches, and current transformers within a metal casing filled with insulating gas, offering advantages such as small footprint, excellent insulation performance, and reliable operation. With the compact and intelligent development of urban power grids, higher requirements are placed on the spatial layout, installation flexibility, and electrical performance of gas-insulated switchgear, leading to the development of side-exit conductive busbar bushing technology. The bushing typically uses high-performance insulating materials such as epoxy resin or silicone rubber, with conductive copper or aluminum tubes embedded inside. Precise electric field optimization design controls the electric field distribution to prevent partial discharge.

[0003] However, common side-outlet conductive busbar bushings use epoxy resin to coat the conductor to achieve insulation and current carrying capacity. Epoxy resin is a thermosetting plastic, which is not recyclable and puts enormous pressure on the environment at the end of its product life cycle. Utility Model Content

[0004] The purpose of this application is to provide a new type of through-wall connector in order to solve the problems mentioned above.

[0005] The technical solution adopted in this application is as follows: a new material through-wall connector, including a side-out busbar bushing assembly, the side-out busbar bushing assembly including a busbar bushing and a central insert fixed in the central hole, a plurality of spaced umbrella skirts extending along the axial direction of the busbar bushing on the outer circumferential surface of the busbar bushing, a first flange and a second flange fixedly connected to the outer side of the connecting end of the busbar bushing, the busbar bushing, the umbrella skirts, the first flange and the second flange are all integrally cast from thermoplastic engineering plastic.

[0006] By adopting the above technical solution, during the production process of the equipment, the busbar bushing, awning, first flange, second flange, and the inserted connecting insert and central insert are integrally cast using thermoplastic engineering plastic. By using thermoplastic engineering plastic instead of epoxy resin, the insulation function of the product is achieved, and the recycling problem is solved. At the same time, the integral casting and the setting of the annular snap-fit ​​groove and the annular snap-fit ​​protrusion of the central insert can improve the overall integrity of the equipment, making the connection between the central insert and the busbar bushing more stable, avoiding the shaking of the central insert during normal use, and improving the stability and service life of the device.

[0007] In a preferred embodiment, a central insert is fixedly connected to the inner side of the busbar bushing, and an annular snap-fit ​​groove of the central insert is fixedly connected to the inner side of the busbar bushing. An annular snap-fit ​​protrusion with a central hole is provided on the inner side of the central insert. The annular snap-fit ​​groove of the central insert corresponds to the annular snap-fit ​​protrusion with the central hole. The busbar bushing and the central insert are integrally cast.

[0008] By adopting the above technical solutions, the integrated casting and the setting of the annular snap-fit ​​groove of the central insert and the annular snap-fit ​​protrusion of the central hole can improve the overall integrity of the equipment and enhance the stability and service life of the device.

[0009] In a preferred embodiment, a first flange is fixedly connected to the outer side of the busbar bushing, and connecting blind holes are arranged circumferentially on the end face of the first flange. The interior of the connecting blind holes is integrally cast with the busbar bushing to form a connecting insert for fixing the busbar bushing to the cabinet. The connecting insert is disposed at the bottom of the connecting blind hole.

[0010] By adopting the above technical solution, the busbar bushing can be installed on the side plate of the cabinet by connecting the blind hole and the internally cast connecting insert. The connecting insert is installed inside the connecting blind hole and forms an isolation with the side plate of the cabinet, thus ensuring the insulation performance of the equipment.

[0011] In a preferred embodiment, a second flange is fixedly connected to the outer side of the first flange, and an annular groove for installing an annular sealing ring is formed on the outer end face of the second flange.

[0012] By adopting the above technical solution, when connecting the cabinet to the side panel of the cabinet through the connecting blind hole and the connecting insert inside the connecting blind hole, the sealing between the cabinet and the inner side of the bus bushing can be achieved by the annular sealing ring installed inside the annular groove.

[0013] In a preferred embodiment, the front end of the bus bushing has a receiving cavity, which is concave.

[0014] By adopting the above technical solution, it is convenient to connect with the busbar connector and ensure good contact between the busbar connector and the center insert.

[0015] In a preferred embodiment, a dustproof insulating cap is fixedly connected to the back side of the bus bushing.

[0016] By adopting the above technical solution, dustproofing and insulation of the connection between the overlapping strip and the overlapping strip slot can be achieved.

[0017] In a preferred embodiment, the back side of the central insert is provided with an overlap row slot, and an overlap row is fixedly connected to the inner side of the overlap row slot.

[0018] By adopting the above technical solution, the connection between the overlapping strip and the overlapping strip slot can be made stable and good contact can be guaranteed.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are: During the production process of the equipment, the busbar bushing, shed, first flange, second flange, and the inserted connecting insert and central insert are integrally cast using thermoplastic engineering plastic. By using thermoplastic engineering plastic instead of epoxy resin, the insulation function of the product is achieved, and the recycling problem is solved. At the same time, the integral casting and the setting of the annular snap-fit ​​groove and the annular snap-fit ​​protrusion of the central insert can improve the overall integrity of the equipment, making the connection between the central insert and the busbar bushing more stable, avoiding the shaking of the central insert during normal use, and improving the stability and service life of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall front view of the device in this application; Figure 2 This is a schematic diagram of the overall right-side structure of the device in this application; Figure 3 This is a schematic diagram of the overall left-side structure of the device in this application; Figure 4 This is a schematic diagram of the overall cross-sectional structure of the device in this application.

[0021] The markings in the diagram are: 1. Busbar bushing; 2. Center hole; 3. Center insert; 4. Annular snap-fit ​​groove of center insert; 5. Annular snap-fit ​​protrusion of center hole; 6. Umbrella skirt; 7. First flange; 8. Connecting blind hole; 9. Connecting insert; 10. Second flange; 11. Annular groove; 12. Receiving cavity; 13. Overlap row slot; 14. Overlap row; 15. Dustproof insulating cap. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Example: Reference Figure 1-4A new type of through-wall connector includes a side-outlet busbar bushing assembly. The side-outlet busbar bushing assembly includes a busbar bushing 1 and a central insert 3 fixed inside a central hole 2. Multiple spaced umbrella skirts 6 extend along the axial direction of the busbar bushing on the outer circumferential surface of the busbar bushing 1. A first flange 7 and a second flange 10 are fixedly connected to the outer side of the connecting end of the busbar bushing 1. The busbar bushing 1, umbrella skirts 6, first flange 7 and second flange 10 are all integrally cast from thermoplastic engineering plastic.

[0024] During the production process of the equipment, the busbar bushing 1, the umbrella skirt 6, the first flange 7 and the second flange 10, as well as the inserted connecting insert 9 and the central insert 3, are integrally cast using thermoplastic engineering plastic. By using thermoplastic engineering plastic instead of epoxy resin, the insulation function of the product is achieved, and the recycling problem is solved. At the same time, the integral casting and the setting of the annular snap-fit ​​groove 4 and the annular snap-fit ​​protrusion 5 of the central insert can improve the overall integrity of the equipment, making the connection between the central insert 3 and the busbar bushing 1 more stable, avoiding the shaking of the central insert 3 during normal use, and improving the stability and service life of the device.

[0025] A central insert 3 is fixedly connected to the inner side of the busbar bushing 1, and an annular snap-fit ​​groove 4 of the central insert is also fixedly connected to the inner side of the busbar bushing 1. An annular snap-fit ​​protrusion 5 with a central hole is formed on the inner side of the central insert 3. The annular snap-fit ​​groove 4 and the annular snap-fit ​​protrusion 5 with the central hole correspond to each other. The busbar bushing 1 and the central insert 3 are integrally cast. The integral casting and the annular snap-fit ​​groove 4 and the annular snap-fit ​​protrusion 5 with the central hole improve the overall integrity of the equipment, enhancing its stability and service life.

[0026] A first flange 7 is fixedly connected to the outer side of the busbar bushing 1. Connecting blind holes 8 are arranged circumferentially at intervals on the end face of the first flange 7. Connecting inserts 9, used to fix the busbar bushing 1 to the cabinet, are integrally cast inside the connecting blind holes 8. The connecting inserts 9 are located at the bottom of the connecting blind holes 8. Through the connecting blind holes 8 and the integrally cast connecting inserts 9, the busbar bushing 1 can be installed on the side plate of the cabinet. The connecting inserts 9, installed inside the connecting blind holes 8, form an isolation between themselves and the side plate of the cabinet, ensuring the insulation performance of the equipment.

[0027] A second flange 10 is fixedly connected to the outer side of the first flange 7. An annular groove 11 for installing an annular sealing ring is provided on the outer end face of the second flange 10. When connecting to the side panel of the cabinet through the connecting blind hole 8 and the connecting insert 9 inside the connecting blind hole 8, the annular sealing ring installed inside the annular groove 11 can achieve the sealing between the cabinet and the inside of the busbar bushing 1.

[0028] The front end of the busbar sleeve 1 has a receiving cavity 12, which is concave. This facilitates connection with the busbar connector and ensures good contact between the busbar connector and the central insert 3.

[0029] A dustproof and insulating cap 15 is fixedly connected to the back side of the busbar bushing 1. This enables dustproofing and insulation of the connection between the overlap strip 14 and the overlap strip slot 13.

[0030] The back side of the central insert 3 is provided with an overlap row slot 13, and an overlap row 14 is fixedly connected to the inner side of the overlap row slot 13. This ensures a stable connection between the overlap row 14 and the overlap row slot 13 and guarantees good contact.

[0031] The implementation principle of the wall-penetrating connector of the new material in this application is as follows: During the production process of the equipment, the busbar bushing 1, the umbrella skirt 6, the first flange 7 and the second flange 10, as well as the inserted connecting insert 9 and the central insert 3 are integrally cast using thermoplastic engineering plastic. By using thermoplastic engineering plastic to replace epoxy resin, the insulation function of the product is achieved, and the recycling problem is solved. At the same time, the integral casting and the setting of the annular snap-fit ​​groove 4 of the central insert and the annular snap-fit ​​protrusion 5 of the central hole can improve the overall integrity of the equipment, making the connection between the central insert 3 and the busbar bushing 1 more stable, avoiding the shaking of the central insert 3 during normal use, and improving the stability and service life of the device.

[0032] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A new type of through-wall connector, comprising a side-outlet busbar bushing assembly, the side-outlet busbar bushing assembly comprising a busbar bushing (1) and a central insert (3) fixed within a central hole (2), characterized in that: Multiple spaced umbrella skirts (6) extend along the axial direction of the busbar bushing (1) on the outer circumferential surface of the busbar bushing (1). A first flange (7) and a second flange (10) are fixedly connected to the outer side of the connecting end of the busbar bushing (1). The busbar bushing (1), umbrella skirts (6), first flange (7) and second flange (10) are all integrally cast from thermoplastic engineering plastic.

2. The through-wall connector of a new material as described in claim 1, characterized in that: The inner side of the busbar bushing (1) is fixedly connected to a central insert (3), and the inner side of the busbar bushing (1) is fixedly connected to a central insert annular snap-fit ​​groove (4). The inner side of the central insert (3) is provided with a central hole annular snap-fit ​​protrusion (5). The central insert annular snap-fit ​​groove (4) corresponds to the central hole annular snap-fit ​​protrusion (5). The busbar bushing (1) and the central insert (3) are integrally cast.

3. The through-wall connector of a new material as described in claim 1, characterized in that: The outer side of the bus bushing (1) is fixedly connected to a first flange (7). Connection blind holes (8) are arranged circumferentially on the end face of the first flange (7). The interior of the connection blind hole (8) is integrally cast with the bus bushing (1) to fix the bus bushing (1) on the cabinet. The connection insert (9) is set at the bottom of the connection blind hole (8).

4. The through-wall connector of a new material as described in claim 1, characterized in that: A second flange (10) is fixedly connected to the outer side of the first flange (7), and an annular groove (11) for installing an annular sealing ring is provided on the outer end face of the second flange (10).

5. The through-wall connector of a new material as described in claim 1, characterized in that: The front end of the bus bushing (1) is provided with a receiving cavity (12), which is concave.

6. The through-wall connector of a new material as described in claim 1, characterized in that: The back side of the bus bushing (1) is fixedly connected with a dustproof insulating cap (15).

7. The through-wall connector of a new material as described in claim 1, characterized in that: The back side of the central insert (3) is provided with an overlap row slot (13), and an overlap row (14) is fixedly connected to the inside of the overlap row slot (13).

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