Special bus for 66kV switch cabinet

Abstract

The utility model relates to the technical field of power equipment, in particular to a special bus for a 66kV switch cabinet, which comprises an integral bus and a joint body sleeved on the outer side of the integral bus, a grading ring is arranged in the middle of the outer side of the integral bus, a middle conducting layer is arranged in the middle of the integral bus, and the joint body is arranged on the outer side of the integral bus. The middle conductive layer is located between the integral bus and the grading ring, the grading ring is clamped with the joint body, the top end of the grading ring is provided with an anti-drop grounding device, the bottom end of the grading ring is provided with a bus grounding wire, the two ends of the joint body are provided with installation parts, and the upper ends of the installation parts are provided with first installation holes used for installing plugging insulators. And a second mounting hole for mounting a sleeve is formed in the lower end of the mounting part. The whole bus is integrally formed, unstable factors in the manual manufacturing process are avoided, the product quality and safety are improved, the sealing performance of the whole bus can be improved through the design of the sleeve, the double-end stud and the plugging insulator, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a busbar dedicated to a 66kV switch cabinet. Background Art

[0002] The switch cabinet is an electrical equipment. The external line of the switch cabinet first enters the main control switch inside the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage room switch cabinets, with high-voltage busbars, such as power plants, etc. Some also have low-frequency load shedding to protect the main equipment.

[0003] At present, the busbars of 66kV switch cabinets on the market are basically made of shortened cables. The production process is all done manually. It is inevitable that the cable busbars will be damaged or have defects due to unstable factors. In addition, the bending stress of the cable and the built-in stress cone will form multiple insulation interfaces, which will bring safety hazards to the future power-on operation of the cable busbar.

[0004] Therefore, we propose a 66kV switchgear dedicated busbar. Utility Model Content

[0005] The main purpose of the utility model is to provide a busbar dedicated to a 66kV switch cabinet. The overall busbar is integrally formed, which avoids unstable factors in the manual production process and improves product quality and safety. Through the design of bushings, studs and blocking insulators, the sealing performance of the overall busbar can be improved, safety hazards are reduced, and the problems in the background technology can be effectively solved.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A busbar dedicated to a 66kV switch cabinet comprises an integral busbar and a joint body sleeved on the outside of the integral busbar, a grading ring is provided at the center of the outer side of the integral busbar, an intermediate conductive layer is provided in the middle of the integral busbar, the intermediate conductive layer is located between the integral busbar and the grading ring, the grading ring is clamped with the joint body, an anti-dropping grounding device is provided at the top of the grading ring, a busbar grounding wire is provided at the bottom of the grading ring, mounting parts are provided at both ends of the joint body, a first mounting hole for mounting a sealing insulator is provided at the upper end of the mounting part, and a second mounting hole for mounting a bushing is provided at the lower end of the mounting part.

[0008] By adopting the above technical scheme and through the design of the grading ring and the intermediate conductive layer, the uniformity of the electric field distribution and the anti-corona capability of the overall busbar are improved. By designing the busbar grounding wire and the joint grounding wire, a relaxed grounding method is adopted to ensure the grounding reliability of the overall busbar.

[0009] Specifically, the bottom end of the joint body is located on both sides of the busbar grounding wire and is provided with joint grounding wires.

[0010] Specifically, the sleeve is connected to a plugging insulator via a stud, and the plugging insulator is located above the sleeve.

[0011] Specifically, the bottom end of the stud is fixedly connected to the top end of the sleeve, and the top end of the stud is fixedly connected to the bottom end of the plugging insulator.

[0012] Specifically, a nut, a spring washer and a flat washer which are sleeved on the stud are further provided in the first mounting hole.

[0013] Beneficial effects of the utility model:

[0014] (1) The utility model discloses a 66 kV switch cabinet dedicated busbar, which improves the uniformity of electric field distribution and anti-corona capability of the overall busbar through the design of a grading ring and an intermediate conductive layer. The overall busbar is integrally formed, avoiding unstable factors in the manual manufacturing process and improving product quality and safety.

[0015] (2) The utility model discloses a 66kV switch cabinet dedicated busbar, which adopts a relaxed grounding method through the design of busbar grounding wire and joint grounding wire, thereby ensuring the grounding reliability of the entire busbar. Through the design of bushing, stud and plugging insulator, the sealing performance of the entire busbar can be improved, thereby reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model;

[0019] In the figure: 1. Connector body; 2. Equalizing ring; 3. Anti-drop grounding device; 4. Intermediate conductive layer; 5. Integral busbar; 6. Mounting part; 7. Sealing insulator; 8. First mounting hole; 9. Second mounting hole; 10. Bushing; 11. Stud; 12. Busbar grounding wire; 13. Connector grounding wire; 14. Nut; 15. Spring washer; 16. Flat washer. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] As an embodiment of the present utility model, Figure 1-Figure 2As shown, a 66kV switch cabinet dedicated busbar described in the utility model comprises an integral busbar 5 and a joint body 1 sleeved on the outside of the integral busbar 5, a grading ring 2 is provided at the center of the outer side of the integral busbar 5, an intermediate conductive layer 4 is provided in the middle of the integral busbar 5, the intermediate conductive layer 4 is located between the integral busbar 5 and the grading ring 2, the grading ring 2 is clamped with the joint body 1, an anti-dropping grounding device 3 is provided at the top of the grading ring 2, a busbar grounding wire 12 is provided at the bottom of the grading ring 2, mounting portions 6 are provided at both ends of the joint body 1, a first mounting hole 8 for mounting a blocking insulator 7 is provided at the upper end of the mounting portion 6, and a second mounting hole 9 for mounting a bushing 10 is provided at the lower end of the mounting portion 6;

[0022] The intermediate conductive layer 4 includes but is not limited to compression molding and surface spraying. Through the design of the voltage-equalizing ring 2 and the intermediate conductive layer 4, the electric field distribution uniformity and corona resistance of the overall busbar 5 are improved. The overall busbar 5 is integrally formed, avoiding unstable factors in the manual production process and improving product quality and safety.

[0023] The utility model also includes that a joint grounding wire 13 is provided on both sides of the busbar grounding wire 12 at the bottom end of the joint body 1. Through the design of the busbar grounding wire 12 and the joint grounding wire 13, a relaxed grounding method is adopted to ensure the grounding reliability of the overall busbar 5.

[0024] The utility model also includes that the sleeve 10 is connected to a blocking insulator 7 through a stud 11 , and the blocking insulator 7 is located above the sleeve 10 .

[0025] The utility model also includes that the bottom end of the stud 11 is fixedly connected to the top end of the sleeve 10, and the top end of the stud 11 is fixedly connected to the bottom end of the plugging insulator 7. Through the design of the sleeve 10, the stud 11 and the plugging insulator 7, the sealing performance of the overall busbar 5 can be improved and safety hazards can be reduced.

[0026] The utility model also includes that a nut 14 , a spring washer 15 and a flat washer 16 which are sleeved on the stud 11 are provided in the first mounting hole 8 .

[0027] When the utility model is in use, a joint body 1 is sleeved on the outer side of the integral busbar 5, a grading ring 2 is provided at the center of the outer side of the integral busbar 5, an intermediate conductive layer 4 is provided in the middle of the integral busbar 5, the intermediate conductive layer 4 is located between the integral busbar 5 and the grading ring 2, the grading ring 2 is clamped with the joint body 1, an anti-dropping grounding device 3 is provided at the top of the grading ring 2, a busbar grounding wire 12 is provided at the bottom of the grading ring 2, mounting parts 6 are provided at both ends of the joint body 1, a blocking insulator 7 is installed on the upper part of the mounting part 6, a sleeve 10 is installed at the lower part of the mounting part 6, the sleeve 10 is connected to the blocking insulator 7 through a stud 11, and the design of the sleeve 10, the stud 11 and the blocking insulator 7 can improve the sealing performance of the integral busbar 5 and reduce safety hazards.

[0028] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A 66kV switch cabinet dedicated busbar, characterized in that: The invention comprises an integral busbar (5) and a joint body (1) sleeved on the outer side of the integral busbar (5); a voltage-equalizing ring (2) is provided at the center of the outer side of the integral busbar (5); an intermediate conductive layer (4) is provided in the middle of the integral busbar (5); the intermediate conductive layer (4) is located between the integral busbar (5) and the voltage-equalizing ring (2); the voltage-equalizing ring (2) is snap-connected with the joint body (1); an anti-dropping grounding device (3) is provided at the top of the voltage-equalizing ring (2); a busbar grounding wire (12) is provided at the bottom of the voltage-equalizing ring (2); mounting portions (6) are provided at both ends of the joint body (1); a first mounting hole (8) for mounting a sealing insulator (7) is provided at the upper end of the mounting portion (6); and a second mounting hole (9) for mounting a sleeve (10) is provided at the lower end of the mounting portion (6).

2. A 66kV switch cabinet dedicated busbar according to claim 1, characterized in that: The bottom end of the joint body (1) is located on both sides of the busbar grounding wire (12) and is provided with joint grounding wires (13).

3. A 66kV switch cabinet dedicated busbar according to claim 1, characterized in that: The sleeve (10) is connected to a blocking insulator (7) via a stud bolt (11), and the blocking insulator (7) is located above the sleeve (10).

4. A 66kV switch cabinet dedicated busbar according to claim 3, characterized in that: The bottom end of the stud bolt (11) is fixedly connected to the top end of the sleeve (10), and the top end of the stud bolt (11) is fixedly connected to the bottom end of the blocking insulator (7).

5. The 66kV switch cabinet dedicated busbar according to claim 1, characterized in that: The first mounting hole (8) is also provided with a nut (14) sleeved on the stud (11), a spring washer (15) and a flat washer (16).

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