A remotely controllable disconnector

Abstract

The utility model relates to the technical field of isolator, and disclose a kind of remotely controlled isolator, including the power end and load end being installed in isolator shell, the inner wall of isolator shell is connected with limiting component, and arc breaking block is slidably connected in the inner side of limiting component, arc breaking block is located between power end and load end, and reset component is connected with the side of arc breaking block away from power end and load end.This kind of remotely controlled isolator, by installing movable end arc block between the power end and load end of isolator, when the power end and load end of isolator break, arc breaking block moves to between power end and load end, and the gap between power end and load end is isolated, so as to avoid that high-voltage arc of power end breaks through air to connect to load end, improve break effect, and improve the safety of break operation.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, specifically a remotely controllable disconnecting switch. Background Technology

[0002] Disconnect switches are switching devices specifically designed for power systems. Their core function is to provide a clearly visible disconnect point to ensure safety during power line maintenance and repair. By disconnecting the power line during operations, the switch creates a safe working environment for personnel. Furthermore, to improve maintenance and repair efficiency, especially in locations difficult for personnel to access directly, such as transmission towers, field weather stations, and along highways, disconnect switches are often equipped with remote control functionality, allowing power workers to remotely perform opening and closing operations.

[0003] Patent CN216250520U discloses an intelligent remote-controlled disconnect switch, comprising: a remote control system, a drive system connected to the remote control system, and a disconnect switch connected to the drive system. The drive system is connected to the switch handle of the disconnect switch to drive the switch handle to close or open the circuit. This application of intelligent remote control technology to a small disconnect switch combines the remote control system, drive system, and small disconnect switch, enabling remote control of opening and closing of the small disconnect switch. The intelligent remote-controlled disconnect switch can be applied in unattended or inaccessible electrical applications, such as high-altitude equipment, tower equipment, highway electrical equipment, isolated equipment, and field weather stations, allowing for remote opening and locking, and remote closing, reducing labor costs and improving efficiency.

[0004] However, the remotely controllable disconnecting switches mentioned above still have the following problems: Disconnecting switches are mainly used in high-voltage environments. During the opening operation, the high voltage will cause an electric arc at its break point. This not only hinders the smooth disconnection of current, but the high temperature generated by the arc will also cause the opening end of the disconnecting switch to melt, thereby damaging the disconnecting switch. This damage will cause the disconnecting switch to be unable to form good contact during the subsequent closing process. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a remotely controllable disconnecting switch that can prevent the formation of high-voltage arcs during tripping, thereby improving the stability of the disconnecting switch.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a remotely controllable disconnect switch, comprising a power supply terminal and a load terminal installed inside the disconnect switch housing, a limit component connected to the inner wall of the disconnect switch housing, an arc-breaking block slidably connected to the inner side of the limit component, the arc-breaking block being located between the power supply terminal and the load terminal, and a reset component connected to the side of the arc-breaking block away from the power supply terminal and the load terminal.

[0007] Furthermore, the limiting assembly includes four track rods, which are fixedly connected to the inner walls of both sides of the disconnector switch housing, and the upper and lower sides of both ends of the arc-breaking block are slidably connected to the four track rods respectively.

[0008] Furthermore, the reset assembly includes two reset springs, which are fixedly connected to the two ends of the arc-breaking block on the side away from the load end, and the other ends of the two reset springs are fixedly connected to the inner wall of the disconnector switch housing.

[0009] Furthermore, a limit rod is provided inside the reset spring. One end of the limit rod is fixedly connected to the inner wall of the disconnector switch housing, and the other end passes through the reset spring and the arc-breaking block and is fixedly connected to the inner wall of the other side of the disconnector switch housing. The arc-breaking block and the limit rod are slidably connected.

[0010] Furthermore, a connection port is provided through the side of the arc-breaking block near the load end, and the connection port is inclined on the side near the load end, with the end of the load end abutting against the inclined surface of the connection port.

[0011] Furthermore, a control lever is fixedly connected to the end of the arc-breaking block away from the reset spring, and the other end of the control lever passes through the disconnector housing and extends to the outside of the disconnector housing.

[0012] Furthermore, a groove is provided on the side wall of one end of the control lever that passes through the disconnect switch housing.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This type of remotely controllable disconnecting switch uses a movable arc-breaking block installed between the power supply end and the load end of the disconnecting switch. When the power supply end and the load end of the disconnecting switch are disconnected, the arc-breaking block moves between the power supply end and the load end, isolating the gap between the power supply end and the load end. This prevents the high-voltage arc at the power supply end from breaking down the air and connecting to the load end, thereby improving the disconnection effect and the safety of the disconnection operation. Attached Figure Description

[0015] Figure 1 This is a front cross-sectional view of the connection structure of this utility model;

[0016] Figure 2 This is a front cross-sectional view of the arc-breaking block of this utility model;

[0017] Figure 3 This is a front cross-sectional view of another form of the end arc block of this utility model;

[0018] Figure 4 This is a schematic diagram of the arc-breaking block connection structure of this utility model.

[0019] In the diagram: 1. Isolating switch housing; 2. Power supply end; 3. Load end; 4. Arc breaking block; 5. Track rod; 6. Return spring; 7. Limit rod; 8. Control rod; 401. Connection port; 801. Groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1 to 4 A remotely controllable disconnect switch includes a power supply terminal 2 and a load terminal 3 installed inside a disconnect switch housing 1. A limit component is connected to the inner wall of the disconnect switch housing 1. An arc-breaking block 4 is slidably connected to the inner side of the limit component. The arc-breaking block 4 is located between the power supply terminal 2 and the load terminal 3. A reset component is connected to the side of the arc-breaking block 4 away from the power supply terminal 2 and the load terminal 3.

[0022] like Figures 1 to 4 As shown, the main improvement of this utility model lies in ensuring that the circuit is smoothly disconnected after the circuit is tripped, thereby improving the safety and stability of the tripping operation. Figures 1 to 4 As shown, in the remotely controllable disconnecting switch of this utility model, when the load terminal 3 flips and moves away from the power supply terminal 2, the high-voltage current of the power supply terminal 2 will break down the air to form an electric arc and connect with the load terminal 3. At this time, the reset component drives the arc-breaking block 4 to move between the power supply terminal 2 and the load terminal 3 through the limit component. The arc-breaking block 4 forms an isolation between the power supply terminal 2 and the load terminal 3, so that the high-voltage current of the power supply terminal 2 cannot form an electric arc to break down the air and connect with the load terminal 3, ensuring that the current between the power supply terminal 2 and the load terminal 3 is completely disconnected. This avoids high-temperature damage to the power supply terminal 2 and the load terminal 3 after the high-voltage arc is formed, and at the same time improves the stability and safety of the disconnecting switch's opening and closing operations. It should be noted that the arc-breaking block 4 must be made of insulating and high-temperature resistant materials, such as ceramics and plastics, to play the role of isolation to prevent the formation of electric arcs. At the same time, it can withstand the high temperature of the electric arc after it is formed and cut off the electric arc. Meanwhile, the limit component and the reset component are both made of insulating materials to prevent the power supply terminal 2 from forming an electric arc with other objects.

[0023] like Figures 1 to 4As shown, the limiting assembly includes four track rods 5, which are fixedly connected to the inner walls of both sides of the disconnector switch housing 1. The upper and lower sides of both ends of the arc-breaking block 4 are slidably connected to the four track rods 5. The four track rods 5 can limit the arc-breaking block 4, while ensuring that the arc-breaking block 4 moves horizontally within the range of the four track rods 5 during the reset process, thereby forming a stable arc-breaking effect.

[0024] like Figures 1 to 4 As shown, the reset assembly includes two reset springs 6. The two reset springs 6 are fixedly connected to the two ends of the arc-breaking block 4 on the side away from the load end 3, respectively. The other ends of both reset springs 6 are fixedly connected to the inner wall of the disconnector housing 1. When the load end 3 gradually moves away from the power supply end 2, the reset springs 6 contract and pull the arc-breaking block 4 laterally along the four track rods 5 to below the power supply end 2, thereby separating the gap between the power supply end 2 and the load end 3, thus cutting off the arc between the power supply end 2 and the load end 3 or preventing the formation of an arc between the power supply end 2 and the load end 3. When closing is required, the load end 3 resets and flips, pressing the end of the arc-breaking block 4 to one side, while simultaneously stretching the reset springs 6, thereby bringing the end of the load end 3 into contact with the end of the power supply end 2 for energization. It should be noted that the reset springs 6 are made of plastic to avoid forming a high-voltage arc with the power supply end 2.

[0025] like Figures 1 to 4 As shown, the reset spring 6 has a limiting rod 7 inside. One end of the limiting rod 7 is fixedly connected to the inner wall of the disconnector switch housing 1, and the other end passes through the reset spring 6 and the arc-breaking block 4 and is fixedly connected to the inner wall of the other side of the disconnector switch housing 1. The arc-breaking block 4 is slidably connected to the limiting rod 7. During the stretching and contraction of the reset spring 6, the internal limiting rod 7 makes the reset spring 6 more stable and less prone to bending deformation. Furthermore, the two limiting rods 7 further limit the lateral movement of the arc-breaking block 4, improving the movement stability of the arc-breaking block 4.

[0026] like Figures 1 to 4 As shown, the arc-breaking block 4 has a through-hole 401 on the side near the load end 3. The through-hole 401 is inclined on the side near the load end 3, and the end of the load end 3 abuts against the inclined surface of the through-hole 401. When the circuit is closed, the load end 3 resets and moves closer to the power supply end 2. At this time, the end of the load end 3 can more smoothly squeeze and move the arc-breaking block 4 by pressing the inclined surface of the through-hole 401, so that the end of the load end 3 can smoothly pass through the through-hole 401 and connect to the power supply end 2 for power supply.

[0027] like Figures 1 to 4As shown, the end of the arc-breaking block 4 furthest from the reset spring 6 is fixedly connected to a control lever 8. The other end of the control lever 8 passes through the disconnector housing 1 and extends to the outside of the disconnector housing 1. If, during closing, the reset load end 3 fails to push the arc-breaking block 4 back into position, the control lever 8 can be manually pulled outward to drive the arc-breaking block 4 back into position, allowing the end of the load end 3 to be smoothly connected to the power supply end 2 for power supply, thus improving the performance. The control lever 8 is made of insulating material.

[0028] like Figures 1 to 4 As shown, a groove 801 is provided on the side wall of one end of the disconnector housing 1. When pulling the control lever 8, the groove 801 can be engaged to pull the control lever 8 more smoothly, improving ease of use.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A remotely controllable disconnect switch, comprising a power supply terminal (2) and a load terminal (3) installed within a disconnect switch housing (1), characterized in that: The inner wall of the isolating switch housing (1) is connected to a limiting component. An arc-breaking block (4) is slidably connected to the inner side of the limiting component. The arc-breaking block (4) is located between the power supply end (2) and the load end (3). A reset component is connected to the side of the arc-breaking block (4) away from the power supply end (2) and the load end (3).

2. The remotely controllable disconnect switch according to claim 1, characterized in that: The limiting component includes four track rods (5), which are fixedly connected to the inner walls of both sides of the isolating switch housing (1), and the upper and lower sides of the arc-breaking block (4) are slidably connected to the four track rods (5).

3. The remotely controllable disconnect switch according to claim 1, characterized in that: The reset assembly includes two reset springs (6), which are fixedly connected to the two ends of the arc-breaking block (4) on the side away from the load end (3), and the other ends of the two reset springs (6) are fixedly connected to the inner wall of the disconnector housing (1).

4. A remotely controllable disconnect switch according to claim 3, characterized in that: The reset spring (6) is provided with a limiting rod (7). One end of the limiting rod (7) is fixedly connected to the inner wall of the disconnector housing (1), and the other end passes through the reset spring (6) and the arc-breaking block (4) and is fixedly connected to the inner wall of the other side of the disconnector housing (1). The arc-breaking block (4) is slidably connected to the limiting rod (7).

5. A remotely controllable disconnect switch according to claim 3, characterized in that: The arc-breaking block (4) has a through-hole (401) on the side near the load end (3). The through-hole (401) is inclined on the side near the load end (3), and the end of the load end (3) abuts against the inclined surface of the through-hole (401).

6. A remotely controllable disconnect switch according to claim 2, characterized in that: The arc-breaking block (4) is fixedly connected to a control lever (8) at one end away from the reset spring (6), and the other end of the control lever (8) passes through the isolating switch housing (1) and extends to the outside of the isolating switch housing (1).

7. A remotely controllable disconnect switch according to claim 6, characterized in that: The control lever (8) has a groove (801) through the side wall of one end of the disconnect switch housing (1).

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