Single-column double-arm vertical telescopic isolating switch arc striking device

Abstract

Single column double -arm vertical telescopic isolator arc striking device, including arc striking moving contact and arc striking static contact, arc striking static contact installs on static contact pipe, arc striking moving contact is two, installs on two moving contact rod respectively, arc striking moving contact includes vertical arc striking dynamic side plate, the upper and lower ends of arc striking dynamic side plate are connected with support plate through pin shaft respectively, and U-shaped bolt fixing piece I is arranged on support plate, when closing, static contact pipe is located between upper and lower two U-shaped bolt fixing pieces I of arc striking moving contact, arc striking static contact installs on static contact pipe, and the position of arc striking static contact corresponds with the position of arc striking dynamic side plate of arc striking moving contact, the utility model discloses above -mentioned structure can protect main contact, improve the operating life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of ultra-high voltage power equipment, and in particular to an arc-starting device for a single-column double-arm vertical telescopic disconnector switch. Background Technology

[0002] Disconnect switches, as core safety devices in power systems, are undeniably important. They play a crucial role in the maintenance of power equipment and the stable operation of the power grid. Arc-breaking operation is a core aspect of disconnect switch usage.

[0003] Disconnecting switches are operated for opening and closing under no-load conditions. However, the capacitive current of voltage transformers, surge arresters, busbars and equipment directly connected to the busbars in the unloaded line, as well as the no-load excitation current of the transformer, may cause arcing during the opening and closing operations of the disconnecting switch.

[0004] Adding an arc-extinguishing device to the switch quickly extinguishes the electric arc, effectively preventing instantaneous damage to the equipment. This operation not only ensures equipment safety but also guarantees the stable operation of the power system, preventing overvoltage or overcurrent interference to the power grid. It can effectively handle arcing phenomena in disconnecting switches and protect the normal operation of electrical equipment. Summary of the Invention

[0005] To address the technical problems existing in the prior art, this utility model provides a single-column double-arm vertical telescopic disconnector arc-starting device.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a single-column double-arm vertical telescopic disconnector arc-initiating device, characterized in that: it includes an arc-initiating moving contact and an arc-initiating stationary contact; the arc-initiating stationary contact is installed on a stationary contact tube, and there are two arc-initiating moving contacts, which are respectively installed on two moving contact rods; the arc-initiating moving contact includes a vertical arc-initiating moving side plate, and the upper and lower ends of the arc-initiating moving side plate are respectively connected to support plates by pins, and the support plates are provided with U-shaped bolt fixing parts I, and the stationary contact tube is located between the upper and lower U-shaped bolt fixing parts I of the arc-initiating moving contact; the arc-initiating stationary contact is installed on the stationary contact tube, and the position of the arc-initiating stationary contact corresponds to the position of the arc-initiating moving side plate of the arc-initiating moving contact.

[0007] The upper and lower ends of the arc-initiating moving side plate are respectively connected to a support plate by a pin. The two support plates are set on the same side of the arc-initiating moving side plate and are parallel to each other. The pin is sleeved with a spring. An insulating pad is provided at the connection between one end of the support plate and the pin. A U-bolt fixing part I is installed at the other end of the support plate. The U-bolt fixing parts I on the two support plates are installed on the side facing the arc-initiating moving side plate, and the upper and lower positions of the U-bolt fixing parts I on the two support plates are corresponding.

[0008] The arc-inducing moving contacts are arranged in pairs, and the U-shaped bolt fixing parts I of the pair of arc-inducing moving contacts are oriented opposite each other and are in corresponding positions.

[0009] The arc-initiating stationary contact includes an arc-initiating stationary contact plate and a U-bolt fixing component II.

[0010] The upper surface of the arc-initiating stationary contact plate is provided with a groove corresponding to the side of the pipe. There are two U-bolt fasteners II, which are arranged in opposite directions and are parallel to each other. The arc-initiating stationary contact plate and the U-bolt fasteners II are installed on the stationary contact tube.

[0011] The positions of the arc-initiating moving side plate and the arc-initiating stationary contact plate are corresponding.

[0012] The beneficial effects of this utility model are as follows: During the opening and closing operations, the arc-inducing contact of this utility model protects the main contacts. By adding auxiliary contacts to the moving and stationary contacts of the single-column double-arm vertical telescopic disconnector, the problem of the main contacts being burned due to prolonged discharge caused by excessive opening and closing time during operation is completely solved. This greatly increases the service life of the equipment and ensures its long-term safe and stable operation. In practical applications, disconnectors typically need to be equipped with arc-inducing contacts to prevent equipment failure and personnel injury caused by electric arcs. Attached Figure Description

[0013] Figure 1 : Schematic diagram of the arc-inducing moving contact structure in this utility model;

[0014] Figure 2 : Schematic diagram of the arc-initiating stationary contact structure in this utility model;

[0015] Figure 3 : Overall assembly diagram of this utility model;

[0016] Figure 4 : Figure 3 Side view of the moving contact and stationary contact of the arc-starting part. Detailed Implementation

[0017] The arc-initiating device for a single-column double-arm vertical telescopic disconnector includes an arc-initiating moving contact 1 and an arc-initiating stationary contact 2. The arc-initiating stationary contact 2 is mounted on a stationary contact tube 3, and there are two arc-initiating moving contacts 1, which are respectively mounted on two moving contact rods 4.

[0018] The arc-initiating moving contact 1 includes a vertical arc-initiating moving side plate 1-2. The upper and lower ends of the arc-initiating moving side plate 1-2 are respectively connected to support plates 1-3 by pins. The support plates 1-3 are provided with U-bolt fixing parts I1-1. When the circuit is closed, the stationary contact tube 3 is located between the upper and lower U-bolt fixing parts I1-1 of the arc-initiating moving contact 1. Specifically, the upper and lower ends of the arc-initiating moving side plate 1-2 are respectively connected to a support plate 1-3 via a pin 1-5. The two support plates 1-3 are located on the same side of the arc-initiating moving side plate 1-2 and are parallel to each other. A spring 1-4 is sleeved on the pin 1-5. An insulating pad 1-6 is provided at the connection between one end of the support plate 1-3 and the pin 1-5, and a U-bolt fixing part I1-1 is installed at the other end of the support plate 1-3. The U-bolt fixing parts I1-1 on the two support plates 1-3 are installed on the side facing the arc-initiating moving side plate 1-2, and the upper and lower positions of the U-bolt fixing parts I1-1 on the two support plates 1-3 are corresponding. The arc-initiating moving contacts 1 are arranged in pairs, and the U-bolt fixing parts I1-1 of a pair of arc-initiating moving contacts 1 are oriented opposite each other and are corresponding in position.

[0019] The arc-initiating stationary contact 2 is mounted on the stationary contact tube 3. The arc-initiating stationary contact 2 includes an arc-initiating stationary contact plate 2-1 and U-bolt fasteners II2-2. The arc-initiating moving side plate 1-2 corresponds to the position of the arc-initiating stationary contact plate 2-1. The upper surface of the arc-initiating stationary contact plate 2-1 is provided with a groove corresponding to the side of the tube. There are two U-bolt fasteners II2-2, which are arranged opposite each other and are parallel to each other. The arc-initiating stationary contact plate 2-1 and the U-bolt fasteners II2-2 are mounted on the stationary contact tube 3.

[0020] In practical use: The arc-initiating moving contact 1 is installed on the moving contact rod 4 of the two intersecting and mutually opening and closing conductive arms of the disconnecting switch. The arc-initiating stationary contact 2 is installed on the stationary contact tube 3 between the moving contact rods 4. Thus, an arc is initiated between the stationary contact and the moving contact rod, so that when the disconnecting switch is opened, the stationary contact tube 3 first separates from the moving contact rod 4; then, the arc-initiating moving side plate 1-2 of the arc-initiating moving contact 1 separates from the arc-initiating stationary contact plate 2-1 of the arc-initiating stationary contact 2, so as to ensure that when the disconnecting switch is opened and closed, the stationary contact tube 3 and the moving contact rod 4 undergo current conversion through the arc-initiating plate without direct contact, thereby effectively protecting the stationary contact and the moving contact rod from being burned.

[0021] During the closing process: the moving side plate 1-2 of the arc-initiating circuit first contacts the stationary contact plate 2-1 of the arc-initiating circuit, and then the moving contact contacts the stationary contact.

[0022] During the tripping process: the moving contact and the stationary contact separate first, and then the arc-initiating moving side plate 1-2 separates from the arc-initiating stationary contact plate 2-1.

Claims

1. A single-column, double-arm vertical telescopic disconnector arc-starting device, characterized in that: It includes an arc-initiating moving contact (1) and an arc-initiating stationary contact (2); the arc-initiating stationary contact (2) is installed on the stationary contact tube (3), and there are two arc-initiating moving contacts (1), which are respectively installed on two moving contact rods (4); the arc-initiating moving contact (1) includes a vertical arc-initiating moving side plate (1-2), and the upper and lower ends of the arc-initiating moving side plate (1-2) are respectively connected to a support plate (1-3) through a pin (1-5). The support plate (1-3) is provided with a U-bolt fixing part I (1-1), and the stationary contact tube (3) is located between the upper and lower U-bolt fixing parts I (1-1) of the arc-initiating moving contact (1); the arc-initiating stationary contact (2) is installed on the stationary contact tube (3), and the position of the arc-initiating stationary contact (2) corresponds to the position of the arc-initiating moving side plate (1-2) of the arc-initiating moving contact (1).

2. The single-column double-arm vertical telescopic disconnector arc-starting device according to claim 1, characterized in that: The upper and lower ends of the arc-inducing moving side plate (1-2) are respectively connected to a support plate (1-3) by a pin (1-5). The two support plates (1-3) are set on the same side of the arc-inducing moving side plate (1-2) and are parallel to each other. The pin (1-5) is fitted with a spring (1-4). An insulating pad (1-6) is provided at the connection between one end of the support plate (1-3) and the pin (1-5). A U-bolt fixing part I (1-1) is installed at the other end of the support plate (1-3). The U-bolt fixing parts I (1-1) on the two support plates (1-3) are installed on the side facing the arc-inducing moving side plate (1-2), and the U-bolt fixing parts I (1-1) on the two support plates (1-3) are vertically corresponding.

3. The single-column double-arm vertical telescopic disconnector arc-starting device according to claim 1, characterized in that: The arc-inducing moving contacts (1) are arranged in pairs, and the U-shaped bolt fixing parts I (1-1) of the pair of arc-inducing moving contacts (1) are oriented opposite each other and are in corresponding positions.

4. The single-column double-arm vertical telescopic disconnector arc-starting device according to claim 1, characterized in that: The arc-initiating stationary contact (2) includes an arc-initiating stationary contact plate (2-1) and a U-bolt fixing component II (2-2).

5. The single-column double-arm vertical telescopic disconnector arc-starting device according to claim 4, characterized in that: The upper surface of the arc-initiating stationary contact plate (2-1) is provided with a groove corresponding to the side of the pipe fitting. There are two U-bolt fasteners II (2-2) and they are arranged opposite each other. The two U-bolt fasteners II (2-2) are parallel to each other. The arc-initiating stationary contact plate (2-1) and the U-bolt fasteners II (2-2) are installed on the stationary contact tube (3).

6. The single-column double-arm vertical telescopic disconnector arc-starting device according to claim 4, characterized in that: The arc-initiating moving side plate (1-2) and the arc-initiating stationary contact plate (2-1) are positioned correspondingly.

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