Outdoor high-voltage isolating switch with fuse

Abstract

The utility model discloses an outdoor high-voltage isolating switch with fuses, which relates to the technical field of electric power system application, and is characterized in that the fuses are integrally mounted on two post insulators in the middle and at the lower part of the isolating switch, so that the occupied space of a split structure is compressed, the space utilization rate is improved, the mounting height of a touch panel part is effectively reduced, and the mounting cost is reduced. The opening and closing operation is convenient; a supporting cross beam part for field installation is reduced, the installation cost and the installation difficulty are saved, and effective cost reduction and benefit increase of a distribution network line are realized; installation is convenient, long-term effective operation of equipment is ensured, performance is stable and reliable, equipment maintenance and repair are easier, and the device is suitable for large-scale application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of power system applications, and specifically relates to an outdoor high-voltage disconnector with a fuse. Background Technique

[0002] A fuse (English name: Fuse) is a circuit protection device that melts the fuse element by the heat generated by itself to disconnect the circuit when the current exceeds the specified value. The main function of the disconnector is to disconnect the circuit to form a visible break without load. In a normal distribution network platform, generally, lightning arresters, disconnectors, fuses, transformers, and GP cabinets are installed in sequence from the busbar downwards. Installing lightning arresters, disconnectors, and fuses on site all require separate installation crossbeams, and the installation is cumbersome and complex. Since a safety distance needs to be reserved between different devices, it also results in the disconnector often being installed at a relatively high place, and it is difficult to operate when closing the disconnector with a live-line tool. Often, the operator needs to stand on the transformer platform to close the switch, with a very high risk factor. Summary of the Invention

[0003] To solve the above-mentioned existing technical problems, the utility model provides an outdoor high-voltage disconnector with a fuse, which integrates the installation of the high-voltage disconnector and the fuse, occupies a small space, is convenient to install, has stable and reliable performance, and is easy to maintain.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:[[]]END]]

[0005] An outdoor high-voltage disconnector with a fuse includes a high-voltage disconnector body and a fuse body. The high-voltage disconnector body is split-type and linked in three-phase structure arranged on a chassis. Each single-phase structure includes three post insulators, a touch plate, a static contact, a main shaft, an insulating pull rod, a transmission mechanism, and an operating mechanism arranged on the chassis from top to bottom. The fuse body includes a fuse carrier, an upper support frame, an upper conductive part, a lower conductive part, and a lower support frame. A static contact is electrically connected and fixedly arranged at the top of the upper post insulator on the chassis. A touch plate and an upper support frame are fixedly arranged on the middle post insulator. The touch plate opens and closes upwards to realize the opening and closing with the static contact. The upper support frame forms an angle with the installation surface of the middle post insulator and extends outwards for a certain length. The lower support frame is fixedly arranged at the top of the lower post insulator. The lower support frame is arranged parallel to the upper support frame. Both ends of the fuse carrier are fixedly connected to the upper support frame and the lower support frame through the upper conductive part and the lower conductive part respectively.

[0006] The length of the lower support frame is shorter than that of the upper support frame, so that the fuse carrier forms an angle with the vertical plane after installation.

[0007] The installation angle of the upper support frame is set at an angle of 15 degrees with the post insulator.

[0008] The conductive components of the high-voltage disconnector body and the fuse body are both made of red copper plates, and the conductive contact surfaces are silver-plated.

[0009] The terminal, static contact and contact plate of the high-voltage disconnector body adopt an integrally formed copper profile structure.

[0010] In the utility model, the fuse is integrally installed on two post insulators in the middle and lower parts of the disconnector, which compresses the floor space of the split structure, improves the space utilization rate, effectively reduces the installation height of the contact plate part, and facilitates the opening and closing operations; reduces the supporting beam part for on-site installation, saves the installation cost and installation difficulty, and realizes effective cost reduction and efficiency improvement of the distribution network line; is convenient to install, ensures the long-term and effective operation of the equipment, has stable and reliable performance, and is easier to maintain and repair the equipment, and is suitable for large-scale popularization and application. Description of the Drawings

[0011] Figure 1 It is a schematic installation diagram of the fuse and the high-voltage disconnector of the utility model;

[0012] Figure 2 It is a schematic diagram of the partial structural connection of the fuse and the disconnector of the utility model;

[0013] Figure 3 It is a schematic diagram of the structure of the fuse carrier 9 of the utility model;

[0014] Figure 4 It is a schematic diagram of the structure of the fuse link 16 of the utility model. Detailed Embodiments

[0015] The following describes the utility model in detail with reference to the drawings and specific embodiments:

[0016] As Figures 1-4As shown in the figure, the outdoor high-voltage disconnector with a fuse includes a high-voltage disconnector body and a fuse body. The high-voltage disconnector body is split and linked in a three-phase structure arranged on a chassis 1. Each single-phase structure includes three post insulators 2, a contact plate 3, a static contact 4, a main shaft 5, an insulating pull rod 6, a transmission mechanism 7, and an operating mechanism 8 arranged on the chassis 1 from top to bottom. The fuse body includes a fuse carrier 9, an upper support frame 10, an upper conductive part 11, a lower conductive part 12, and a lower support frame 13. At the top of the upper post insulator 2 on the chassis 1, a static contact 4 is electrically connected and fixedly arranged. On the middle post insulator 2, a contact plate 3 and an upper support frame 10 are fixedly arranged. The contact plate 3 opens and closes upward to achieve the opening and closing of the static contact. The upper support frame 10 forms an angle with the installation surface of the middle post insulator 2 and extends outward for a certain length. The lower support frame 13 is fixedly arranged at the top of the lower post insulator 2. The lower support frame 13 is arranged parallel to the upper support frame 10. Both ends of the fuse carrier 9 are fixedly connected to the upper support frame 10 and the lower support frame 13 through the upper conductive part 11 and the lower conductive part 12 respectively.

[0017] As a preferred method, in this embodiment, the length of the lower support frame 13 is shorter than that of the upper support frame 10, so that the fuse carrier 9 forms an angle with the vertical plane after installation, enabling the fuse to fall reliably after operation.

[0018] As a preferred method, in this embodiment, the installation angle of the upper support frame 10 is set at an angle of 15 degrees with the post insulator 2.

[0019] As a preferred method, in this embodiment, the conductive components of the high-voltage disconnector body and the fuse body are all made of red copper plate material, and the conductive contact surface is silver-plated to improve the conductive ability and wear resistance.

[0020] As a preferred method, in this embodiment, the wiring terminal, static contact 4, and contact plate 3 of the high-voltage disconnector body adopt an integrally formed copper profile structure without transitional connection, and the conductive performance is reliable.

[0021] In the specific installation and implementation process of the present utility model, the post insulator 2 adopts a solid rod-shaped porcelain insulator with good insulation performance and high strength. The main shaft 5 on the chassis 1 is fixed on the chassis 1 by a shaft sleeve and a fixing plate and can rotate flexibly. Limit sleeves are arranged at both ends of the main shaft 5 to prevent the main shaft from moving axially.

[0022] The interior of the fuse carrier 9 is a fuse tube with a through tubular structure. An upper contact 14 is arranged at the upper end of the fuse tube, and a rotatable lower contact 15 is arranged at the lower end. The upper contact 14 is connected to an upper conductive member 11, and the lower contact 15 is connected to a lower conductive member 12. A fusing element 16 is arranged inside the fuse tube. The lower contact 15 is internally provided with an energy storage spring and a spring pressing piece for tensioning the fusing element 16. A gas generating material layer is arranged on the inner surface of the fuse tube. The gas generating material layer is made of a material that is easily volatilized at high temperatures. When an overload or short-circuit current passes through, the heat generated by itself causes the fusing element to fuse, thereby disconnecting the circuit.

[0023] The main purpose of the present utility model is to simplify the installation of the fuse and the high-voltage disconnector without affecting the functions, with lower cost, smaller occupied space, more convenient installation and maintenance, reduce the installation height of the disconnecting knife, and facilitate the opening and closing operations. The specific working process and working principle are not elaborated here.

[0024] Certainly, the above description is not a limitation to the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. An outdoor high-voltage disconnector with a fuse, comprising a high-voltage disconnector body and a fuse body. The high-voltage disconnector body is integrally and movably connected in a three-phase structure arranged on a chassis (1). Each single-phase structure includes three post insulators (2), a touch plate (3), a static contact (4), a main shaft (5), an insulating pull rod (6), a transmission mechanism (7), and an operating mechanism (8) that are arranged on the chassis (1) from top to bottom. The fuse body includes a fuse carrier (9), an upper support frame (10), an upper conductive part (11), a lower conductive part (12), and a lower support frame (13). It is characterized in that, At the top of the upper post insulator (2) on the chassis (1), a static contact (4) is electrically connected and fixedly arranged. On the middle post insulator (2), a contact plate (3) and an upper support frame (10) are fixedly arranged. The contact plate (3) opens and closes upward to achieve opening and closing with the static contact. The upper support frame (10) forms an angle with the installation surface of the middle post insulator (2) and extends outward for a certain length. The lower support frame (13) is fixedly arranged at the top of the lower post insulator (2). The lower support frame (13) is arranged parallel to the upper support frame (10). Both ends of the fuse carrier (9) are fixedly connected to the upper support frame (10) and the lower support frame (13) through an upper conductive part (11) and a lower conductive part (12) respectively.

2. The outdoor high-voltage disconnector with a fuse according to claim 1 is characterized in that, The length of the lower support frame (13) is shorter than that of the upper support frame (10), so that the fuse carrier (9) forms an angle with the vertical plane after installation.

3. An outdoor high-voltage disconnecting switch with a fuse, according to claim 1 or 2, characterized in that, The installation angle of the upper support frame (10) is set at an angle of 15 degrees with the post insulator (2).

4. An outdoor high-voltage disconnector with a fuse according to claim 1, characterized in that, The conductive components of the high-voltage disconnector body and the fuse body are both made of copper sheet material, and the conductive contact surfaces are silver-plated.

5. The outdoor high-voltage disconnector with a fuse according to claim 1, characterized in that, The terminal, the static contact (4) and the contact plate (3) of the high-voltage disconnector body adopt an integrally formed copper profile structure.

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