A kind of outlet bushing with isolation baffle
By introducing an isolation baffle into the outlet casing, using structures such as L-shaped insulator, copper rod placement cavity and umbrella group, the problem of insufficient insulation performance under narrow air box space is solved, and efficient insulation of the outlet casing is achieved and the increase in grounding distance.
Patent Information
- Application Number
- CN201811175876.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-10-10
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2038-10-10
AI Technical Summary
In the case of narrow air box space, the prior art is difficult to effectively improve the phase-to-phase and relative insulation performance of the outlet casing, and cannot be compared with sulfur hexafluoride.
The outlet casing design with isolation baffles is adopted, including L-shaped insulators, isolation baffles, copper rod placement cavity, epoxy grooves, umbrella groups, shielding rings and reinforcement ribs, and these structures enhance insulation performance and grounding distance.
The insulation performance and grounding distance of the outlet casing are significantly improved, ensuring efficient insulation in the small air box space, surpassing the performance of traditional gas alternatives.
Smart Images
Figure CN109244987B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of ring network cabinets, and in particular to an outlet bushing with an isolation baffle. Background Art
[0002] Global climate change is one of the most daunting challenges facing mankind in the 21st century. Science shows that global warming caused by the continuous increase of greenhouse gases is becoming more and more prominent. It is urgent to reduce greenhouse gas emissions and control the greenhouse effect. In this context, the process of removing sulfur hexafluoride or reducing sulfur hexafluoride in switchgear is also urgent.
[0003] At present, the countermeasures used by domestic manufacturers are mostly to use vacuum arc extinguishing chambers to extinguish arcs, and nitrogen or dry air to replace sulfur hexafluoride as the insulating gas. However, under the same pressure, the two replaced gases cannot be comparable to sulfur hexafluoride in terms of insulation performance. Therefore, how to effectively set up the electrical insulation method in the closed gas box, especially the phase-to-phase and phase-to-ground insulation of the outlet bushing. Due to the narrow space of the gas box and the small phase-to-phase and phase-to-ground insulation distances, how to effectively improve the phase-to-phase and phase-to-ground insulation performance of the outlet bushing has become a difficult point in this project. Summary of the invention
[0004] In order to ensure the insulation performance of the outlet bushing between phases and between phases and ground in a relatively small air box space, the present invention provides an outlet bushing with a simple structure and good insulation effect.
[0005] The technical solution adopted by the present invention to solve its technical problems is a kind of outlet bushing with an isolation baffle, comprising an L-shaped insulator. The insulator can cover the bushing conductive rod, the isolation baffle is arranged on the top of the insulator, the isolation baffle forms a copper rod placement cavity with a notch, the notch direction of the copper rod placement cavity forms a preset angle (α) with the bushing outlet direction, a groove is arranged between the isolation baffle and the top of the bushing conductive rod, the insulator is radially extended outward to arrange a circular boss, a shielding ring is arranged between the bushing conductive rod and the circular boss and inside the insulator, the shielding ring is at the same height position as the circular boss, the circular boss is arranged on one side of the bushing outlet with a power-taking insert of a live display, the power-taking insert is connected to the shielding ring, and a plurality of umbrella groups distributed along the axial direction are arranged on the outer wall of the insulator above the circular boss.
[0006] As an improvement of the above technical solution, the isolation baffle is provided with a pair of notches which are angled with the outlet direction of the sleeve to form a copper rod placement cavity, and the notches on both sides of the copper rod placement cavity can accommodate the copper rod to enter and exit.
[0007] As an improvement of the above technical solution, the groove is an annularly distributed arc-shaped concave epoxy resin groove arranged between the isolation baffle and the top of the sleeve conductive rod.
[0008] As an improvement of the above technical solution, the outer diameter of the umbrella group is consistent with the isolation baffle.
[0009] As an improvement of the above technical solution, the circular boss is provided with a sealing ring placement cavity, the cross section of the sealing ring placement cavity is circular, and the inner diameter thereof is consistent with the outer diameter of the umbrella group.
[0010] As an improvement of the above technical solution, the radial cross-section of the shielding ring is circular or annular, and the axial cross-section is C-shaped.
[0011] As an improvement of the above technical solution, the power taking insert is connected to the shielding ring through a metal wire.
[0012] As an improvement of the above technical solution, a reinforcing rib is provided on the inner side of the L-shaped insulator, and the reinforcing rib extends to the circular boss.
[0013] As an improvement of the above technical solution, the reinforcing rib and the outer contour of the circular boss form a plane, and the power extraction insert extends from the plane through the hole, so that an external power display can be connected to the power extraction insert.
[0014] As an improvement of the above technical solution, a circular boss is provided at the end of the insulator, and the circular boss extends outwardly to form a standard European front plug interface, and the front plug interface is conical.
[0015] The beneficial effects of the present invention are:
[0016] Since the outlet bushing with an isolation baffle of the present invention is cast by epoxy resin automatic gel process, an insulating baffle is arranged at the conductor overlap, which effectively solves the interphase insulation problem, and a groove is arranged at the conductor overlap and an umbrella group is arranged outside the bushing, which increases the creepage distance between the live body of the outlet bushing and the grounding body of the gas box, and ensures the insulation performance at this place. Compared with the traditional outlet bushing, the advantages and effects of the present invention are obvious. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, wherein:
[0018] Figure 1 is a front cross-sectional view of an outlet bushing according to an embodiment of the present invention;
[0019] Figure 2 is a three-dimensional diagram of an outlet bushing according to an embodiment of the present invention;
[0020] Figure 3 is a top view of an outlet bushing according to an embodiment of the present invention;
[0021] Figure 4It is a schematic diagram of a wiring copper rod being fixed on the outlet bushing of the present invention. DETAILED DESCRIPTION
[0022] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other without conflict.
[0023] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the accompanying drawings. The singular forms "a", "said", and "the" used in the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.
[0024] See also Figures 1 to 4 The outlet bushing with an isolation baffle of the present invention comprises an insulator 1 and a bushing conductive rod 2, both of which are L-shaped. The insulator 1 can be cast and molded by an APG automatic gel process to wrap the bushing conductive rod 2. The two ends of the bushing conductive rod 2 form concave-convex parts 20, and the insulator 1 also forms matching concave-convex parts 20, so as to strengthen the two ends of the bushing conductive rod 2 and the two ends of the insulator 1 to be firmly fixed, and prevent axial loosening.
[0025] An isolation baffle 3 is arranged on the top of the insulator 1, and the isolation baffle 3 forms a copper rod placement cavity 4. The isolation baffle 3 mainly serves to insulate the copper rods 14 from each other and from the ground. Figure 4 The isolation baffle 3 has a pair of circumferentially evenly distributed notches, and the connecting line of the pair of notches forms an angle α with the direction of the casing outlet, as shown in FIG. Figure 3 As shown. α can be, for example, greater than 20 degrees and less than 80 degrees, preferably 60 degrees. The angle α here can allow each copper rod 14 to be led out from the copper rod placement cavity 4 at an angle, thereby facilitating the installation of a plurality of copper rods with the conductive connecting pieces 15 forming a straight line, such as Figure 4 shown.
[0026] Continue to refer to Figure 1 An epoxy resin groove 5 is provided between the isolation baffle 3 and the top of the bushing conductive rod 2. A plurality of umbrella groups 6 are provided in the vertical middle and upper part of the insulator 1. The groove 5 and the umbrella group 6 increase the creepage distance between the live body of the outlet bushing and the grounding body of the gas box, thereby ensuring the insulation performance at this location.
[0027] A circular boss 7 is provided in the vertical middle of the insulator 1, and a sealing ring placement cavity 8 is provided on the circular boss 7. A shielding ring 9 is centrally placed between the insulator 1 and the sleeve conductive rod 2 at a height consistent with the circular boss 7. The radial section of the shielding ring 9 is circular or annular, and the axial section is C-shaped, such as Figure 1 .
[0028] The circular boss 7 is provided with a live display power-taking insert 10 on the side of the bushing outlet, and the power-taking insert 10 is connected to the shielding ring 9 through a wire, and reinforcing ribs 11 are provided on the surface of the circular boss 7 and the L-shaped insulator 1. Figure 2 As shown, the reinforcing rib 11 is arranged on the inner side of the L-shaped insulator 1, and the reinforcing rib 11 extends to the circular boss 7, thereby reinforcing the circular boss 7 and the insulator 1 together. In addition, the reinforcing rib 11 and the outer contour of the circular boss 7 form a plane, and the power extraction insert 10 extends from the plane through the hole, so that the external live display can be easily connected to the power extraction insert 10 without interfering with other parts of the insulator 1.
[0029] A circular boss 12 is disposed in the middle of the insulator 1, and a front plug interface 13 is disposed on the right side of the insulator 1. The front plug interface 13 can be a well-known power connection interface such as a standard European type or a metric type. The front plug interface 13 can be formed in a cone head form with a thin outer surface and a thick inner surface for easy installation.
[0030] The above is only a preferred embodiment of the present invention. The present invention is not limited to the above implementation. As long as the technical effect of the present invention is achieved by the same means, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the scope of protection of the present disclosure. All should belong to the protection scope of the present invention. Within the protection scope of the present invention, its technical scheme and / or implementation method can have various modifications and changes.
Claims
1. A bushing with an isolation baffle, comprising an L-shaped insulator (1), characterized in that: The insulator (1) is capable of covering the casing conductive rod (2); an isolation baffle (3) is arranged on the top of the insulator (1); the isolation baffle (3) forms a copper rod placement cavity (4) with a notch; the notch direction of the copper rod placement cavity (4) forms a preset angle (α) with the casing outlet direction; a groove (5) is arranged between the isolation baffle (3) and the top of the casing conductive rod (2); a circular boss (7) is arranged radially outwardly on the insulator (1); a shielding ring (9) is arranged between the casing conductive rod (2) and the circular boss (7) and inside the insulator (1); the height position of the shielding ring (9) is consistent with that of the circular boss (7); A power-taking insert (10) with a live display is arranged on one side of the bushing outlet of the circular boss (7), and the power-taking insert (10) is connected to the shielding ring (9). A plurality of umbrella groups (6) distributed along the axial direction are arranged on the outer wall of the insulator (1) above the circular boss (7). The isolation baffle (3) is provided with a pair of notches at an angle to the bushing outlet direction to form a copper rod placement cavity (4). The notches on both sides of the copper rod placement cavity (4) can accommodate the copper rod (14) to enter and exit. Through the setting of a preset angle (α), each of the copper rods (14) is led out of the copper rod placement cavity (4) at an angle, so as to facilitate the installation mode in which the conductive connecting pieces (15) of the plurality of copper rods (14) form a straight line. A reinforcing rib (11) is arranged on the inner side of the L-shaped insulator (1), and the reinforcing rib (11) extends to the circular boss (7). The reinforcing rib (11) and the outer contour of the circular boss (7) form a plane, and the power extraction insert (10) extends from the plane through the hole, so that an external power display can be connected to the power extraction insert (10); The outer diameter of the umbrella group (6) is consistent with that of the isolation baffle (3), and the circular boss (7) is provided with a sealing ring placement cavity (8). The cross section of the sealing ring placement cavity (8) is circular, and its inner diameter is consistent with the outer diameter of the umbrella group (6).
2. The outlet bushing with an isolation baffle according to claim 1, characterized in that: The groove (5) is an annularly distributed arc-shaped concave epoxy resin groove (5) arranged between the isolation baffle (3) and the top of the sleeve conductive rod (2).
3. The outlet bushing with an isolation baffle according to claim 1, characterized in that: The shielding ring (9) has a radial cross section that is circular or annular, and an axial cross section that is C-shaped.
4. The outlet bushing with an isolation baffle according to claim 1, characterized in that: The power extraction insert (10) is connected to the shielding ring (9) via a metal wire.
5. The outlet bushing with an isolation baffle according to claim 1, characterized in that: A circular boss (12) is provided at the end of the insulator (1), and a standard European-style front plug interface (13) is extended outward from the circular boss (12), and the front plug interface (13) is conical.