Operating device for isolating switch

Abstract

The utility model discloses an operating device for an isolating switch, which comprises a movable part, a fixed part and an equipotential connecting assembly, the movable part comprises an isolating switch operating handle, a transmission square shaft, a gear transmission part and a quick closing and opening mechanism, and the fixed part comprises a mounting bracket and a cover. And the quick closing and opening mechanism is mounted on the mounting bracket. According to the operating device for the isolating switch, through mutual cooperation of the isolating switch operating handle, the transmission square shaft, the gear transmission part, the rapid on-off mechanism, the mounting bracket, the cover, the spring and the conductor, when the isolating switch is mounted and used, the mounting bracket is connected with a grounding system; metal parts in the operating mechanism of the isolating switch are all in a grounding state, the situation that the metal parts are not grounded and generate suspended potential is avoided, the isolating switch and an electric power system are prevented from being damaged, the operating handle is located on one side of the isolating switch, and a different choice is provided for design of an electric power system control cabinet.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, specifically to an operating device for disconnecting switches. Background Technology

[0002] The operating handle of the disconnecting switch is generally located on the front of the disconnecting switch body. In the power system control cabinet that uses the disconnecting switch, the operating handle for controlling the opening and closing of the disconnecting switch is also located on the front of the control cabinet, according to the structural characteristics of the disconnecting switch.

[0003] The metal components of the operating device for disconnecting switches should be reliably connected and grounded. If a metal component exists in isolation in the operating mechanism, an uncertain potential to ground will be generated on this metal when it is between high and low voltage. This potential is called the floating potential.

[0004] The voltage at a floating potential is relatively high compared to the normal voltage, the field strength is more concentrated, and it can disrupt the formation of the surrounding insulating medium. When the floating potential is large, partial discharge is easily generated. When used in disconnecting switches in low-voltage systems (such as AC400V / AC230V), the floating potential generated is small due to the low-voltage environment, and the damage to the disconnecting switch and the system is less. Therefore, it is often not required to use special technical treatment. When used in higher-voltage systems (such as systems with rated voltage close to or exceeding AC 1000V or DC 1500V), due to the voltage environment, it is necessary to make equipotential bonding to the metal parts of the operating mechanism of the disconnecting switch to prevent the floating potential from damaging the disconnecting switch and the power system.

[0005] Therefore, we provide an operating device for disconnecting switches. Summary of the Invention

[0006] The purpose of this invention is to provide an operating device for a disconnecting switch to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an operating device for a disconnecting switch, comprising a movable part, a fixed part, and an equipotential bonding assembly. The movable part includes a disconnecting switch operating handle, a transmission square shaft, a gear transmission component, and a quick-connection / disconnection mechanism. The fixed part includes a mounting bracket and a cover. The quick-connection / disconnection mechanism is mounted on the mounting bracket.

[0008] Preferably, the cover is mounted on the mounting bracket and located above the quick-connect and disconnect mechanism. The mounting bracket is mounted on the left and right sides of the quick-connect and disconnect mechanism, respectively, with the first disconnect switch body and the second disconnect switch body respectively fixedly connected to the switches on the first disconnect switch body and the second disconnect switch body and moving synchronously.

[0009] Preferably, the gear transmission component consists of a pair of vertically meshing sector gears, wherein the sector gears are composed of a driving gear and a driven gear meshing with each other.

[0010] Preferably, the gear transmission component is mounted on the cover, and the driven gear on the gear transmission component is fixedly connected to the rotating shaft of the quick-closing mechanism. The transmission square shaft is mounted above the cover, and the driving gear on the gear transmission component is fixedly connected to the transmission square shaft. The disconnecting switch operating handle is bolted to the surface on the right side of the transmission square shaft. The disconnecting switch operating handle drives the transmission square shaft to rotate in both directions, which in turn drives the quick-closing mechanism to rotate in both directions. The quick-closing mechanism moves in the same direction as the first disconnecting switch body and the second disconnecting switch body, thereby realizing the closing and opening operations of the disconnecting switch.

[0011] Preferably, the equipotential bonding assembly includes a spring and a conductor, the conductor being installed in a fixing hole on the top of the cover, and the spring being sleeved on the surface of the conductor.

[0012] Preferably, the end of the conductor near the gear transmission component is in contact with the gear transmission component, and the conductor is used to maintain sufficient and effective contact with the gear transmission component.

[0013] Preferably, the equipotential bonding assembly connects the moving parts and the fixed parts together to achieve equipotential bonding of the metal parts of the disconnector operating mechanism.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model realizes an operating device for disconnecting switches through the mutual cooperation of the operating handle of the disconnecting switch, the transmission square shaft, the gear transmission component, the quick opening and closing mechanism, the mounting bracket, the cover, the spring, and the conductor. The mounting bracket of the disconnecting switch is connected together by the conductor. When the disconnecting switch is installed and used, the mounting bracket is connected to the grounding system, so that all the metal parts in the operating mechanism of the disconnecting switch are in a grounded state, avoiding the floating potential generated by the metal parts not being grounded, and avoiding damage to the disconnecting switch and the power system. Moreover, the operating handle is located on one side of the disconnecting switch, providing a different option for the design of the power system control cabinet. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the movable component, fixed component, and equipotential bonding assembly of this utility model;

[0018] Figure 3 This is a structural schematic diagram of the front view of the transmission square shaft, gear transmission component, cover and equipotential bonding assembly of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the transmission square shaft, gear transmission component, cover, and equipotential bonding assembly of this utility model.

[0020] In the diagram: 1. Disconnecting switch operating handle; 2. Transmission square shaft; 3. Gear transmission component; 4. First disconnecting switch body; 5. Quick opening and closing mechanism; 6. Second disconnecting switch body; 7. Mounting bracket; 8. Cover; 9. Equipotential bonding assembly; 91. Spring; 92. Conductor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 An operating device for a disconnecting switch includes a movable part, a fixed part, and an equipotential bonding assembly 9. The movable part includes a disconnecting switch operating handle 1, a transmission square shaft 2, a gear transmission component 3, and a quick-closing mechanism 5. The fixed part includes a mounting bracket 7 and a cover 8. The quick-closing mechanism 5 is mounted on the mounting bracket 7.

[0023] Furthermore, the gear transmission component 3 consists of a pair of vertically meshing sector gears. The sector gears are composed of a driving gear and a driven gear meshing with each other, which realizes the operation of closing and opening the disconnecting switch. The operation is changed from front operation to operation of closing and opening the disconnecting switch on one side of the disconnecting switch through the disconnecting switch operation handle 1.

[0024] The cover 8 is mounted on the mounting bracket 7 and located above the quick-connect and disconnect mechanism 5. The first disconnect switch body 4 and the second disconnect switch body 6 are respectively mounted on the mounting bracket 7 on the left and right sides of the quick-connect and disconnect mechanism 5. The drive shafts on both sides of the quick-connect and disconnect mechanism 5 are fixedly connected to the switches on the first disconnect switch body 4 and the second disconnect switch body 6, and move synchronously. The gear transmission component 3 is mounted on the cover 8, and the driven gear on the gear transmission component 3 is fixedly connected to the rotating shaft of the quick-connect and disconnect mechanism 5. The transmission square shaft 2 is located above the cover 8, and the drive gear on the gear transmission component 3 is fixedly connected to the transmission square shaft 2. The drive gear and the driven gear mesh with each other. The disconnector switch operating handle 1 is bolted to the surface of the right side of the transmission square shaft 2. The equipotential bonding assembly 9 includes a spring 91 and a conductor 92. The conductor 92 is installed in the fixing hole on the top of the cover 8. The spring 91 is sleeved on the surface of the conductor 92. The end of the conductor 92 near the gear transmission component 3 is in contact with the gear transmission component 3. The conductor 92 maintains sufficient and effective contact with the gear transmission component 3. When the moving component is in the closed position, the open position, or in motion, the fixed component and the moving component are always in sufficient and effective contact, ensuring that all metal parts of the operating mechanism are in an equipotential state. The equipotential bonding assembly 9 connects the moving component and the fixed component together.

[0025] Furthermore, the length of the connecting operating mechanism and the transmission shaft 2 can be varied according to the requirements of the usage environment.

[0026] Furthermore, the disconnector operating handle 1, transmission square shaft 2, gear transmission component 3, and quick opening / closing mechanism 5 are moving parts. The movement is transmitted through the mutual contact of the metal parts, and a uniform potential is achieved at the same time. However, they are not connected to the grounding component of the power system. Therefore, they will generate a floating potential for the entire power system. When the moving parts are connected to the fixed parts through the equipotential bonding component 9, and when the disconnector is installed and used, the mounting bracket 7 is connected to the grounding system of the power system through direct conductive contact or by conductor 92, thereby achieving equipotential bonding of the metal parts of the disconnector operating mechanism.

[0027] By cooperating with the disconnector switch operating handle 1, transmission square shaft 2, gear transmission component 3, quick opening and closing mechanism 5, mounting bracket 7, cover 8, spring 91, and conductor 92, an operating device for a disconnector switch is realized. The mounting bracket 7 of the disconnector switch is connected together by conductor 92. When the disconnector switch is installed and used, the mounting bracket 7 is connected to the grounding system, so that all metal parts in the operating mechanism of the disconnector switch are in a grounded state, avoiding the floating potential generated by the metal parts not being grounded, and avoiding damage to the disconnector switch and the power system. Moreover, the operating handle is located on one side of the disconnector switch, providing a different option for the design of the power system control cabinet.

[0028] When in use, when the operating handle 1 of the disconnect switch is rotated clockwise, it drives the transmission square shaft 2 to rotate clockwise. The transmission square shaft 2 drives the quick opening and closing mechanism 5 to rotate clockwise through the gear transmission component 3. When the quick opening and closing mechanism 5 rotates to the inflection point, the quick opening and closing mechanism 5 drives the first disconnect switch body 4 and the second disconnect switch 6 to quickly open under the action of the internal spring force.

[0029] When the operating handle 1 of the disconnecting switch is rotated counterclockwise, it drives the transmission square shaft 2, the gear transmission component 3 and the quick closing mechanism 5 to rotate counterclockwise. When the quick closing mechanism 5 rotates to the inflection point, the quick closing mechanism 5 drives the first disconnecting switch body 4 and the second disconnecting switch 6 to close quickly under the action of the internal spring force.

[0030] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An operating device for a disconnecting switch, characterized in that: It includes a movable part, a fixed part and an equipotential bonding assembly (9). The movable part includes a disconnect switch operating handle (1), a transmission square shaft (2), a gear transmission component (3) and a quick connection / disconnection mechanism (5). The fixed part includes a mounting bracket (7) and a cover (8). The quick connection / disconnection mechanism (5) is mounted on the mounting bracket (7).

2. The operating device for a disconnecting switch according to claim 1, characterized in that: The cover (8) is mounted on the mounting bracket (7) and located above the quick opening and closing mechanism (5). The first disconnecting switch body (4) and the second disconnecting switch body (6) are respectively mounted on the mounting bracket (7) and located on the left and right sides of the quick opening and closing mechanism (5). The drive shafts on both sides of the quick opening and closing mechanism (5) are fixedly connected to the switches on the first disconnecting switch body (4) and the switches on the second disconnecting switch body (6) and move synchronously.

3. The operating device for a disconnecting switch according to claim 2, characterized in that: The gear transmission component (3) consists of a pair of vertically meshing sector gears, which are composed of a driving gear and a driven gear meshing with each other.

4. The operating device for a disconnecting switch according to claim 3, characterized in that: The gear transmission component (3) is mounted on the cover (8). The driven gear on the gear transmission component (3) is fixedly connected to the rotating shaft of the quick engagement and disengagement mechanism (5). The transmission square shaft (2) is mounted above the cover (8). The drive gear on the gear transmission component (3) is fixedly connected to the transmission square shaft (2). The disconnect switch operating handle (1) is mounted on the surface of the right side of the transmission square shaft (2) by bolts.

5. The operating device for a disconnecting switch according to claim 4, characterized in that: The equipotential bonding assembly (9) includes a spring (91) and a conductor (92), the conductor (92) being installed in a fixing hole on the top of the cover (8), and the spring (91) being sleeved on the surface of the conductor (92).

6. The operating device for a disconnecting switch according to claim 5, characterized in that: The conductor (92) is in contact with the gear transmission component (3) at one end, and the conductor (92) is used to maintain sufficient and effective contact with the gear transmission component (3).

7. The operating device for a disconnecting switch according to claim 6, characterized in that: The equipotential bonding assembly (9) connects the moving parts and the fixed parts together.

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