Compact high-performance pole for ring main unit

Abstract

The utility model discloses a compact high-performance pole for a ring main unit, which particularly relates to the technical field of poles and comprises an outer shell, an incoming bus is arranged at the top of one side of the outer shell, an outgoing bus is arranged at the bottom of one side, close to the incoming bus, of the outer shell, and a vacuum arc-extinguishing chamber is arranged at the top of the outgoing bus. The vacuum arc-extinguishing chamber is arranged on the bottom side in the outer shell, a circuit breaker pull rod is arranged on one side of the vacuum arc-extinguishing chamber, a flexible connecting piece is fixedly installed at the end, close to the vacuum arc-extinguishing chamber, of the circuit breaker pull rod, and a grounding moving contact is arranged on one side of the incoming bus. According to the utility model, the grounding moving contact, the grounding operation shaft, the disconnecting switch pull rod, the switch moving end contact, the static contact and the like are arranged, and the direct-acting type structure is adopted, so that the space can be greatly saved, the size of the pole is smaller, and the insulating property can be improved by the epoxy vulcanization layer; and the insulating property of the pole is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of poles, and more specifically, to a compact high-performance pole for a ring network cabinet. Background Art

[0002] SF6 gas has a very strong greenhouse effect, and its greenhouse effect equivalent is as high as 23900. Using environmentally friendly gas to replace SF6 is the current development trend of 12kV ring network cabinet products. Dry air or nitrogen is a commonly used environmentally friendly insulating gas. Its advantages are low cost, stable performance, no obvious greenhouse effect, non-flammable and non-combustible, and the liquefaction temperature is much lower than SF6 gas. However, compared with SF6 gas, dry air or nitrogen has two obvious disadvantages:

[0003] First, the insulation performance is relatively low. Under the same gas pressure, the insulation performance is only about 30% of that of SF6. To obtain the same insulation performance as SF6, the gas pressure must be increased or the insulation distance must be increased. This becomes one of the limiting factors for the miniaturization and structural flexibility of ring network cabinet products.

[0004] Second, the heat dissipation performance is poor. The gas heat transfer process is mainly convection heat dissipation. The gas density of dry air or nitrogen is about 20% of SF6, and the convection heat dissipation capacity is much weaker than SF6. This limits the improvement of the flow capacity of the ring network cabinet and cannot meet the current power users' demand for higher current and higher capacity.

[0005] Therefore, there is an urgent need for a compact and high-performance pole for a ring main unit to solve the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a compact high-performance pole for a ring network cabinet. By providing a grounding moving contact, a grounding operating shaft, an isolating switch pull rod, a switch moving end contact and a static contact and other structures, and the utility model adopts a direct-acting structure, it can greatly save space, so that the volume of the pole is smaller, and then the epoxy vulcanization layer can improve the insulation performance, so that the insulation performance of the pole is improved, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a compact high-performance pole for a ring network cabinet, comprising an outer shell, an incoming busbar is arranged on the top of one side of the outer shell, an outgoing busbar is arranged on the bottom of one side of the outer shell close to the incoming busbar, a vacuum arc extinguishing chamber is arranged on the top of the outgoing busbar, the vacuum arc extinguishing chamber is arranged on the bottom side of the inner shell, a circuit breaker pull rod is arranged on one side of the vacuum arc extinguishing chamber, a soft connector is fixedly installed on one end of the circuit breaker pull rod close to the vacuum arc extinguishing chamber, a grounding moving contact is arranged on one side of the incoming busbar, the grounding moving contact is arranged inside the top side of the outer shell, a grounding operating shaft is arranged on one side of the bottom of the grounding moving contact, one end of the grounding operating shaft is connected to the grounding moving contact The grounding operation shaft is arranged inside the top side of the outer shell, the bottom of the grounding moving contact is provided with a grounding moving contact interface, the grounding moving contact interface is arranged on the outer shell, an isolating switch pull rod is arranged inside the outer shell, an isolating moving contact is fixedly installed at one end of the isolating switch pull rod, a switch moving end contact is arranged outside the isolating moving contact, a static contact is arranged at the bottom end of the incoming busbar, a moving contact interface is arranged inside the bottom end of the static contact, a static arc contact is arranged inside the moving contact interface, guide rings are arranged inside both ends of the switch moving end contact and the top side, as well as inside the moving contact interface, and spring contact fingers are arranged inside the bottom side and top side of the switch moving end contact and inside the moving contact interface;

[0008] The isolating moving contact comprises a moving contact body, the moving contact body is threadedly connected to the isolating switch pull rod, a moving arc contact is arranged at one end of the moving contact body away from the isolating switch pull rod, and an epoxy vulcanized layer is arranged on the outer side of the moving contact body.

[0009] In a preferred embodiment, the switch moving end contact is fixedly installed inside the outer shell, and the top of the switch moving end contact is connected to the ground moving contact interface.

[0010] In a preferred embodiment, the static contact is arranged inside a side of the outer shell away from the isolating switch pull rod.

[0011] In a preferred embodiment, the isolating movable contact is slidably connected to the switch movable contact.

[0012] In a preferred embodiment, the top end of the flexible connector is fixedly connected to the inner wall of the outer shell by screws.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model is provided with a grounding moving contact, a grounding operating shaft, an isolating switch pull rod, a switch moving end contact and a static contact, and the utility model adopts a direct-acting structure, which can greatly save space and make the volume of the pole smaller. Then, the epoxy vulcanization layer can improve the insulation performance, so that the insulation performance of the pole is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 For the utility model Figure 1 Enlarged schematic diagram of the structure of part A in the middle.

[0017] Figure 3 It is a front view structural diagram of the isolating switch pull rod of the utility model.

[0018] Figure 4 It is a schematic diagram of the front view structure of the grounding moving contact of the utility model.

[0019] The accompanying drawings are marked as follows: 1. outer shell; 2. incoming busbar; 3. outgoing busbar; 4. vacuum arc extinguishing chamber; 5. circuit breaker pull rod; 6. flexible connector; 7. grounding moving contact; 8. grounding operating shaft; 9. grounding moving contact interface; 10. isolating switch pull rod; 11. isolating moving contact; 12. moving contact body; 13. moving arc contact; 14. epoxy vulcanization layer; 15. switch moving end contact; 16. static contact; 17. moving contact interface; 18. static arc contact; 19. guide ring; 20. spring contact finger. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] As attached Figure 1-4As shown, the utility model provides a compact high-performance pole for a ring network cabinet, including an outer shell 1, an incoming busbar 2 is arranged on the top of one side of the outer shell 1, an outgoing busbar 3 is arranged on the bottom of the side of the outer shell 1 close to the incoming busbar 2, a vacuum arc chamber 4 is arranged on the top of the outgoing busbar 3, and the vacuum arc chamber 4 is arranged on the bottom side of the inner shell 1, a circuit breaker pull rod 5 is arranged on one side of the vacuum arc chamber 4, and a soft connector 6 is fixedly installed on one end of the circuit breaker pull rod 5 close to the vacuum arc chamber 4, a grounding moving contact 7 is arranged on one side of the incoming busbar 2, and the grounding moving contact 7 is arranged inside the top side of the outer shell 1, and a grounding operating shaft 8 is arranged on one side of the bottom of the grounding moving contact 7, one end of the grounding operating shaft 8 is meshed with one side of the grounding moving contact 7, and the grounding operating shaft 8 is arranged Inside the top side of the outer shell 1, a grounding moving contact interface 9 is provided at the bottom of the grounding moving contact 7, and the grounding moving contact interface 9 is provided on the outer shell 1. An isolating switch pull rod 10 is provided inside the outer shell 1, and an isolating moving contact 11 is fixedly installed at one end of the isolating switch pull rod 10. A switch moving end contact 15 is provided on the outside of the isolating moving contact 11. A static contact 16 is provided at the bottom end of the incoming busbar 2, and a moving contact interface 17 is provided inside the bottom end of the static contact 16. A static arc contact 18 is provided inside the moving contact interface 17. Guide rings 19 are provided inside both ends and the top side of the switch moving end contact 15 and inside the moving contact interface 17. Spring contact fingers 20 are provided inside the bottom side and the top side of the switch moving end contact 15 and inside the moving contact interface 17.

[0022] The isolating moving contact 11 includes a moving contact body 12 , which is threadedly connected to the isolating switch pull rod 10 , and a moving arc contact 13 is arranged at one end of the moving contact body 12 away from the isolating switch pull rod 10 , and an epoxy vulcanized layer 14 is arranged on the outer side of the moving contact body 12 .

[0023] The switch moving end contact 15 is fixedly installed inside the outer shell 1 , and the top of the switch moving end contact 15 is connected to the ground moving contact interface 9 .

[0024] The static contact 16 is arranged inside a side of the outer shell 1 away from the isolating switch pull rod 10 .

[0025] The isolating moving contact 11 is slidably connected to the switch moving end contact 15 .

[0026] The top end of the flexible connector 6 is fixedly connected to the inner wall of the outer shell 1 by screws.

[0027] The specific implementation method is as follows: when using the utility model, the isolating moving contact 11 adopts a direct-acting structure, which improves the current carrying capacity of the main circuit. The electrical contact method adopts spring contact fingers 20, and the number of spring contact fingers 20 is selected according to the current size. By providing a static arc contact 18 and a moving arc contact 13, the static contact 16 and the moving contact body 12 can be protected. By providing an epoxy vulcanization layer 14, the insulation performance can be improved. Since the moving contact body 12 is threadedly connected to the isolating switch pull rod 10, pulling the isolating switch pull rod 10 can make the isolating moving contact 11 move smoothly in the switch moving end contact 15. The grounding moving contact 7 adopts a direct-acting structure, and the drive adopts a meshing transmission method to make full use of the longitudinal space. The utility model adopts a direct-acting structure, which greatly saves space and makes the volume of the pole smaller. Then the epoxy vulcanization layer 14 can improve the insulation performance, so that the insulation performance of the pole is improved.

[0028] Working principle of this utility model:

[0029] Refer to the instruction manual Figure 1-4 When using the utility model, by providing structures such as the grounding moving contact 7, the grounding operating shaft 8, the isolating switch pull rod 10, the switch moving end contact 15 and the static contact 16, and the utility model adopts a direct-acting structure, it can greatly save space and make the volume of the pole smaller, and then the epoxy vulcanization layer 14 can improve the insulation performance, so that the insulation performance of the pole is improved.

[0030] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0031] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A compact high-performance pole for a ring main unit, comprising an outer shell (1), characterized in that: An incoming busbar (2) is arranged at the top of one side of the outer shell (1), an outgoing busbar (3) is arranged at the bottom of one side of the outer shell (1) close to the incoming busbar (2), a vacuum arc extinguishing chamber (4) is arranged at the top of the outgoing busbar (3), the vacuum arc extinguishing chamber (4) is arranged at the bottom side of the inner shell (1), a circuit breaker pull rod (5) is arranged at one side of the vacuum arc extinguishing chamber (4), a flexible connector (6) is fixedly installed at one end of the circuit breaker pull rod (5) close to the vacuum arc extinguishing chamber (4), a grounding moving contact (7) is arranged at one side of the incoming busbar (2), the grounding moving contact (7) is arranged inside the top side of the outer shell (1), a grounding operating shaft (8) is arranged at one side of the bottom of the grounding moving contact (7), one end of the grounding operating shaft (8) is meshed with one side of the grounding moving contact (7), the grounding operating shaft (8) is arranged inside the top side of the outer shell (1), and the grounding moving contact (7) is arranged at one side of the bottom of the grounding moving contact (7). A grounding moving contact interface (9) is provided at the bottom of the moving contact (7), and the grounding moving contact interface (9) is provided on the outer shell (1). An isolating switch pull rod (10) is provided inside the outer shell (1), and an isolating moving contact (11) is fixedly installed at one end of the isolating switch pull rod (10). A switch moving end contact (15) is provided outside the isolating moving contact (11). A stationary contact (16) is provided at the bottom of the incoming busbar (2), and a moving contact interface (17) is provided inside the bottom of the stationary contact (16). A stationary arc contact (18) is provided inside the moving contact interface (17). Guide rings (19) are provided inside both ends and the top side of the switch moving end contact (15) and inside the moving contact interface (17). Spring contact fingers (20) are provided inside the bottom side and the top side of the switch moving end contact (15) and inside the moving contact interface (17). The isolating moving contact (11) comprises a moving contact body (12), the moving contact body (12) is threadedly connected to the isolating switch pull rod (10), a moving arc contact (13) is arranged at one end of the moving contact body (12) away from the isolating switch pull rod (10), and an epoxy vulcanized layer (14) is arranged on the outer side of the moving contact body (12).

2. A compact high-performance pole for a ring main unit according to claim 1, characterized in that: The switch moving end contact (15) is fixedly installed inside the outer shell (1), and the top of the switch moving end contact (15) is connected to the ground moving contact interface (9).

3. The compact high-performance pole for a ring main unit according to claim 1, characterized in that: The stationary contact (16) is arranged inside a side of the outer shell (1) away from the isolating switch pull rod (10).

4. The compact high-performance pole for a ring main unit according to claim 1, characterized in that: The isolating moving contact (11) is slidably connected to the switch moving end contact (15).

5. The compact high-performance pole for a ring main unit according to claim 1, characterized in that: The top end of the flexible connector (6) is fixedly connected to the inner wall of the outer shell (1) via screws.

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