bus tie core unit

Abstract

The utility model discloses a bus tie core unit, gas tank is provided with switch unit, bus tie unit one, bus tie unit two, switch unit includes isolating switch subassembly and circuit breaker subassembly, and one of isolating switch subassembly and circuit breaker subassembly is connected with bus tie unit one, and the other is connected with bus tie unit two, and bus tie unit one and bus tie unit two are provided with bus bushing respectively, and bus bushing is connected to switch unit through the bus tie respectively, and the bus bushing of two phases of bus tie unit one and bus tie unit two is connected with power transformer respectively, and bus bushing is arranged on the sealing plate of gas tank, and power transformer is arranged in the gas tank. The utility model discloses setting up power transformer in the gas tank, and providing protection by the gas tank, avoids power transformer bare outside, saves the use of protective box, simplifies the structure of connection circuit structure and bus tie core unit, makes bus tie cabinet whole more simple and neat.

Description

Technical Field

[0001] This utility model relates to the field of power technology, and in particular to a bus tie core unit. Background Technology

[0002] Bus tie cabinets are key equipment in power systems, mainly used in single-busbar segmented or double-busbar power distribution architectures. Their core function is to achieve flexible selection of different power supply modes and fault isolation through automatic switching mechanisms, thereby ensuring power supply continuity.

[0003] The power transformers of existing bus tie cabinets are usually located outside the gas box, in a separate enclosure structure. This not only requires more components, but also makes the overall structure of the bus tie cabinet relatively bulky, requiring a large amount of space and making it inconvenient to arrange flexibly in the application environment. Utility Model Content

[0004] To address the shortcomings of existing bus tie cabinets, this applicant provides a reasonably structured bus tie core unit, with the power transformer integrated into the gas box, simplifying the structure and making the overall design more streamlined and cleaner.

[0005] The technical solution adopted in this utility model is as follows: A bus tie core unit includes a switch unit, a first bus connection unit, and a second bus connection unit housed within a gas box. The switch unit comprises a disconnector assembly and a circuit breaker assembly, one of which is connected to the first bus connection unit and the other to the second bus connection unit. The first and second bus connection units are each equipped with corresponding bus bushings, which are connected to the switch unit via connecting busbars. Power transformers are connected between the bus bushings of two phases of the first and second bus connection units. The bus bushings pass through the gas box's sealing plate, and the power transformers are housed within the gas box.

[0006] As a further improvement to the above technical solution: The bus bushings of bus connection unit one and bus connection unit two are electronic bushings. The electronic bushings are equipped with current transformers and have primary output terminals and secondary output terminals. The current output by the secondary output terminal is less than that of the primary output terminal.

[0007] The gas box is equipped with an isolation operating mechanism and a circuit breaker operating mechanism. The isolation operating mechanism corresponds to the disconnecting switch assembly and can operate the disconnecting switch assembly. The circuit breaker operating mechanism corresponds to the circuit breaker assembly and can operate the circuit breaker assembly. The drive shafts of the isolation operating mechanism and the circuit breaker operating mechanism are respectively equipped with operating components for operating the drive shafts.

[0008] The operating components include an adapter and an operating component. The adapter is fixedly inserted into the drive shaft, and the operating component is mounted on the outer cabinet. When operating the drive shaft, the operating component and the adapter are inserted and engaged.

[0009] The adapter component includes an adapter block and a pin. The adapter block is inserted into the drive shaft, and the pin is set on the adapter block and extends towards the operating component. The operating component includes an operating panel and a connecting shaft. The operating panel is connected to one end of the connecting shaft near the adapter component, and the other end of the connecting shaft is connected to the outer cabinet. The operating panel has a pin hole, which corresponds to the pin. When operating the drive shaft, the pin is inserted into the pin hole.

[0010] The insertion hole is a fan-shaped hole, and the arc length of the fan-shaped hole is greater than the diameter of the insertion pin.

[0011] The operating component is installed on the cabinet door of the outer cabinet and can move with the cabinet door. When the cabinet door is opened, the operating component is disengaged from the adapter component. When the cabinet door is closed, the operating component is inserted into the adapter component.

[0012] The isolation operating mechanism and the circuit breaker operating mechanism are two-position operating mechanisms that can perform opening and closing operations.

[0013] The busbar bushing of busbar connection unit one is connected to the connecting busbar via the connecting busbar, and the connecting busbar is connected to the disconnecting switch assembly or circuit breaker assembly; the connecting busbar is fixedly connected to the gas box via several insulators.

[0014] Busbar connection unit one and busbar connection unit two are arranged on the same side and are located above or below the switch unit.

[0015] The beneficial effects of this utility model are as follows: This utility model places the power transformer inside the gas box, which provides protection and prevents the power transformer from being exposed. This saves on the use of a protective box, simplifies the structure of the connection lines and the core unit of the bus tie, and makes the bus tie cabinet simpler and neater overall.

[0016] This invention provides an operation adapter on the drive shaft of the operating mechanism. The operation of the drive shaft is facilitated by the cooperation between the adapter and the operating component, thus ensuring the successful operation of the operating mechanism. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention from one perspective.

[0018] Figure 2 This is a three-dimensional schematic diagram from another perspective of the present invention.

[0019] Figure 3 This is the front view of the present invention.

[0020] Figure 4 A schematic diagram of the operating components for the drive shaft of the operating mechanism.

[0021] Figure 5 The diagram shows the operation and coordination of the adapter and the operating component. a) is a diagram of the adapter and the operating component not being engaged, and b) is a diagram of the adapter and the operating component being engaged.

[0022] In the picture: 1. Air box; 2. Switching unit; 21. Disconnecting switch assembly; 22. Circuit breaker assembly; 3. Busbar connection unit one; 31. Busbar bushing one; 32. Power transformer one; 33. Connecting busbar one; 34. Connecting bar; 35. Insulator; 4. Busbar connection unit two; 41. Busbar bushing two; 42. Power transformer two; 43. Connecting busbar two; 5. Isolation operating mechanism; 51. Isolation drive shaft; 6. Circuit breaker operating mechanism; 61. Circuit breaker drive shaft; 7. Operating component; 71. Adapter component; 711. Adapter block; 712. Plug pin; 72. Operating component; 721. Operating panel; 7211. Plug hole; 722. Connecting shaft. Detailed Implementation

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0024] like Figures 1 to 3 As shown, the core unit of the bus tie in this utility model is a gas-filled switchgear. Its gas box 1 contains a switch unit 2, a first bus connection unit 3, and a second bus connection unit 4. The first bus connection unit 3 and the second bus connection unit 4 are arranged on the same side, either above or below the switch unit 2. In this embodiment, the first bus connection unit 3 and the second bus connection unit 4 are located below the switch unit 2. The switch unit 2 includes a disconnector switch assembly 21 and a circuit breaker assembly 22, arranged vertically, with one on top and the other on the bottom. In this embodiment, the disconnector switch assembly 21 is on top, and the circuit breaker assembly 22 is on the bottom. One of the disconnector switch assembly 21 and the circuit breaker assembly 22 is connected to the first bus connection unit 3, and the other is connected to the second bus connection unit 4. An isolation operating mechanism 5 and a circuit breaker operating mechanism 6 are provided on the outside of the gas box 1. The isolation operating mechanism 5 corresponds to the disconnector switch assembly 21, and the circuit breaker operating mechanism 6 corresponds to the circuit breaker assembly 22. The isolating operating mechanism 5 and the circuit breaker operating mechanism 6 are two-position operating mechanisms that can perform opening and closing operations on the isolating switch assembly 21 and the circuit breaker assembly 22.

[0025] like Figure 1As shown, the busbar connection unit 3 includes three independent busbar bushings 31 corresponding to phases A, B, and C, respectively. A power transformer 32 connects two phases (phase A and phase C in this embodiment) of the busbar bushings 31. Each busbar bushing 31 is connected to a connecting busbar 33 via a connecting busbar 33. The connecting busbar 34 is connected to the disconnector assembly 21 or the circuit breaker assembly 22. The connecting busbar 34 is fixedly connected to the gas box 1 via several insulators 35.

[0026] like Figures 1 to 3 As shown, busbar connection unit 2 4 includes three independent busbar bushings 2 41 corresponding to phases A, B, and C, respectively. Power transformers 2 42 are connected between two phases (phase A and phase C in this embodiment) of busbar bushings 2 41. Each busbar bushing 2 41 is connected to the disconnector assembly 21 or the circuit breaker assembly 22 via a connecting busbar 2 43.

[0027] The busbar bushings (Busbar Bushing 1 31, Busbar Bushing 2 41) of the busbar connection units (Busbar Connection Unit 1 3, Busbar Connection Unit 2 4) are electronic bushings. These electronic bushings integrate current transformers and have primary and secondary output terminals. The current output from the secondary output terminal is less than that from the primary output terminal. The busbar bushings of the busbar connection units are inserted into the sealing plate of the gas box 1. The power transformers (Power Transformer 1 32, Power Transformer 2 42) are housed inside the gas box 1 and protected by it, preventing the power transformers from being exposed. This saves on the use of a protective box, simplifies the connection line structure and the structure of the bus tie core unit, making the overall bus tie cabinet simpler and neater.

[0028] like Figure 2 , Figure 3 As shown, the isolation drive shaft 51 of the isolation operation mechanism 5 and the circuit breaker drive shaft 61 of the circuit breaker operation mechanism 6 are respectively provided with operation components 7 for operating the drive shaft.

[0029] like Figure 4 , Figure 5 As shown, the operating component 7 is described using the isolation drive shaft 51 as an example. The operating component 7 includes a connecting part 71 and an operating part 72. The connecting part 71 is fixedly inserted into the isolation drive shaft 51, and the operating part 72 is mounted on the cabinet door of the outer cabinet of the main unit (not shown in the figure). The operating part 72 can move with the cabinet door; when the cabinet door is opened, the operating part 72 disengages from the connecting part 71 (see reference). Figure 5 a) After the cabinet door is closed, the operating component 72 and the adapter component 71 are plugged in and engaged (see reference). Figure 5(b) Rotating the operating component 72 will drive the adapter component 71 to rotate, thereby operating the isolation drive shaft 51. The connection and cooperation relationship between the circuit breaker drive shaft 61 and the operating component 7 is described in the section on the connection and cooperation relationship between the isolation drive shaft 51 and the operating component 7.

[0030] The adapter component 71 includes an adapter block 711 and a pin 712. The adapter block 711 is fixedly inserted into the drive shaft (isolation drive shaft 51, circuit breaker drive shaft 61). The pin 712 is disposed on the adapter block 711 and extends forward toward the operating component 72. In this embodiment, two pins 712 are provided extending from the side of the adapter block 711 facing the operating component 72, and the pins 712 are distributed on opposite sides of the drive shaft.

[0031] The operating component 72 includes an operating panel 721 and a connecting shaft 722. The operating panel 721 is connected to one end of the connecting shaft 722 near the adapter component 71, and the other end of the connecting shaft 722 is connected to the cabinet door of the outer cabinet. The operating panel 721 has a corresponding insertion hole 7211 for the insertion pin 712. When the operating component 72 is inserted into the adapter component 71, the insertion pin 712 is inserted into the insertion hole 7211. The insertion hole 7211 is a fan-shaped hole, and the arc length of the fan-shaped hole is greater than the diameter of the insertion pin 712, providing ample insertion space for the insertion pin 712 and facilitating its insertion.

[0032] The above description is an explanation of the present utility model and not a limitation thereof. The present utility model can be modified in any form without departing from its spirit.

Claims

1. A bus tie core unit, wherein a switch unit (2), a first bus connection unit (3), and a second bus connection unit (4) are provided in a gas box (1), the switch unit (2) comprising a disconnector assembly (21) and a circuit breaker assembly (22), one of the disconnector assembly (21) and the circuit breaker assembly (22) being connected to the first bus connection unit (3) and the other being connected to the second bus connection unit (4); characterized in that: Busbar connection unit 1 (3) and busbar connection unit 2 (4) are respectively provided with busbar bushings corresponding to the three. The busbar bushings are respectively connected to the switch unit (2) through the connecting busbar. Power transformers are respectively connected between the busbar bushings of two phases of busbar connection unit 1 (3) and busbar connection unit 2 (4). The busbar bushings are installed on the sealing plate of the gas box (1), and the power transformers are installed inside the gas box (1).

2. The core unit of the motherboard according to claim 1, characterized in that: The bus bushings of bus connection unit 1 (3) and bus connection unit 2 (4) are electronic bushings. The electronic bushings are equipped with current transformers and have a primary output terminal and a secondary output terminal. The current output of the secondary output terminal is less than that of the primary output terminal.

3. The core unit of the motherboard according to claim 1, characterized in that: The gas box (1) is equipped with an isolation operation mechanism (5) and a circuit breaker operation mechanism (6). The isolation operation mechanism (5) corresponds to the disconnect switch assembly (21) and can operate the disconnect switch assembly (21). The circuit breaker operation mechanism (6) corresponds to the circuit breaker assembly (22) and can operate the circuit breaker assembly (22). The drive shafts of the isolation operation mechanism (5) and the circuit breaker operation mechanism (6) are respectively equipped with operation components (7) for operating the drive shafts.

4. The core unit of the motherboard according to claim 3, characterized in that: The operating component (7) includes a converter (71) and an operating component (72). The converter (71) is fixedly inserted into the drive shaft, and the operating component (72) is installed on the outer cabinet. When operating the drive shaft, the operating component (72) is inserted into the converter (71).

5. The core unit of the motherboard according to claim 4, characterized in that: The adapter (71) includes an adapter block (711) and a plug pin (712). The adapter block (711) is inserted into the drive shaft, and the plug pin (712) is set on the adapter block (711) and extends toward the operating component (72). The operating component (72) includes an operating panel (721) and a connecting shaft (722). The operating panel (721) is connected to one end of the connecting shaft (722) near the adapter (71), and the other end of the connecting shaft (722) is connected to the outer cabinet. The operating panel (721) has a plug hole (7211) which corresponds to the plug pin (712). When the drive shaft is operated, the plug pin (712) is inserted into the plug hole (7211).

6. The core unit of the motherboard according to claim 5, characterized in that: The insertion hole (7211) is a fan-shaped hole, and the arc length of the fan-shaped hole is greater than the diameter of the insertion pin (712).

7. The core unit of the motherboard according to claim 4, characterized in that: The operating component (72) is installed on the cabinet door of the outer cabinet and can move with the cabinet door. When the cabinet door is opened, the operating component (72) is disengaged from the adapter component (71). After the cabinet door is closed, the operating component (72) and the adapter component (71) are inserted into each other.

8. The core unit of the motherboard according to claim 3, characterized in that: The isolation operation mechanism (5) and the circuit breaker operation mechanism (6) are two-position operation mechanisms that can perform opening and closing operations.

9. The core unit of the motherboard according to claim 1, characterized in that: The bus bushing of bus connection unit 1 (3) is connected to the connecting bus (34) via the connecting bus, and the connecting bus (34) is connected to the disconnecting switch assembly (21) or the circuit breaker assembly (22); the connecting bus (34) is fixedly connected to the gas box (1) via several insulators (35).

10. The core unit of the motherboard according to claim 1, characterized in that: Busbar connection unit 1 (3) and busbar connection unit 2 (4) are arranged on the same side and are located above or below the switch unit (2).

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