A shock-resistant and anti-disengagement device for a horizontal telescopic disconnector switch

Abstract

This invention relates to a horizontal telescopic disconnector anti-vibration and anti-tripping device, comprising a base, an operating mechanism, a telescopic conductive arm, and cooperating moving and stationary contacts. An operating insulator and a post insulator are mounted on the base. A conductive base is connected to the top of the operating insulator, and the telescopic conductive arm is mounted on the conductive base. The telescopic conductive arm includes a first conductive rod and a second conductive rod hinged together. A moving contact is mounted on the other side of the second conductive rod. The telescopic conductive arm is driven to swing by the operating mechanism mounted on the base, thereby driving the moving contact closer to or away from the stationary contact to achieve opening and closing. An anti-tripping mechanism for cooperating with the moving contact is mounted on the conductive base, and a closing anti-tripping mechanism for cooperating with the moving contact is mounted at the stationary contact. Through the cooperation of the anti-tripping mechanism for opening and closing, the moving contact in the open and closed states is respectively restricted and held, ensuring that the moving contact is well maintained in either the open or closed position.

Description

Technical Field

[0001] This invention relates to the field of disconnecting switches, and in particular to a shock-resistant and anti-disengagement device for a horizontal telescopic disconnecting switch. Background Technology

[0002] Horizontal telescopic disconnectors are widely used in substations. Under normal circumstances, some are in the open (standby) state while others are in the closed (operating) state. During an earthquake, the conductive arm of the disconnector is not under stress in the open or closed state, making it prone to significant swinging. This leads to a substantial reduction in the break distance, potentially causing insulation breakdown due to insufficient break distance. In the closed state, the moving contact is only subjected to the clamping force of the stationary contact, and severe swaying can easily cause the moving and stationary contacts to separate. The limit device for horizontal telescopic disconnectors is difficult to design, and most structures are either impossible to install or have complex and costly installation structures. With the rapid development of power grids in overseas markets, especially in earthquake-prone countries like Peru and Chile, there is an urgent need to design an earthquake-resistant anti-disengagement device to meet market demands. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a horizontal telescopic disconnector anti-vibration and anti-disengagement device to prevent the disconnector from the phenomenon of large swing of the moving contact under the action of an earthquake, resulting in insufficient break distance, and the phenomenon of the moving and stationary contacts separating due to the shaking of the earthquake in the closed state.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a horizontal telescopic disconnector anti-vibration and anti-disengagement device, the innovation of which is: including a base, an operating mechanism, a telescopic conductive arm, and mutually cooperating moving contacts and stationary contacts;

[0005] An operating insulator and a post insulator are installed on the base. The top of the operating insulator is connected to a conductive seat. A telescopic conductive arm is installed on the conductive seat. The telescopic conductive arm includes a first conductive rod and a second conductive rod that are hinged to each other. One side of the first conductive rod is hinged to the conductive seat, and a moving contact is installed on the other side of the second conductive rod. The telescopic conductive arm is driven to swing by an operating mechanism installed on the base, thereby driving the moving contact to approach or move away from the stationary contact to realize the opening and closing of the circuit breaker.

[0006] The conductive base is equipped with a tripping anti-disconnection mechanism for cooperating with the moving contact, and a closing anti-disconnection mechanism is installed at the stationary contact for cooperating with the moving contact.

[0007] Furthermore, the tripping anti-disengagement mechanism includes a first pull rod assembly and a first clamping assembly;

[0008] The first pull rod assembly includes a first pull rod body. One side of the first pull rod body is connected to the operating insulator through a transition plate and moves with the operation of the operating insulator. The other side of the first pull rod body is connected to a first clamping assembly and drives the first clamping assembly to move closer to or away from the moving contact in the open state.

[0009] The first clamp assembly includes a pair of first clamps that are hinged to each other. The first clamp includes a pair of first clamp bodies that are arranged in a scissor-like manner. The first clamp body is composed of a first clamp segment and a second clamp segment. The first clamp segment is in the shape of a figure 7, and the two first clamp segments are hinged to each other on the side closest to the second clamp segment. The second clamp segments of the two first clamp bodies are arranged in a V-shape. The side of each of the two second clamp segments away from the first clamp segment is hinged to the first pull rod body, and the hinge point between the two second clamp segments and the first pull rod body is the same point. The other side of each of the two second clamp segments is hinged to the two first clamp segments respectively.

[0010] Furthermore, the cooperation between the first pull rod body and the operating insulator is as follows: the operating mechanism includes an operating box and an operating rod vertically connected to the top of the operating box. The operating rod is vertically set and connected to the operating insulator, and drives the operating insulator to rotate, thereby driving the telescopic conductive arm to move.

[0011] The transition plate is an arc-shaped plate. One side of the transition plate is hinged to the operating insulator and swings horizontally as the operating insulator rotates. The other side of the transition plate is hinged to the first pull rod body and drives the first pull rod body to move horizontally, thereby driving the first clamping assembly to move closer to or away from the moving contact.

[0012] Furthermore, the closing anti-disengagement mechanism includes a second pull rod assembly and a second clamping assembly;

[0013] The second pull rod assembly includes a pair of parallel electric push-pull rods, which work together to move the second clamping assembly closer to or further away from the moving contact in the closed state.

[0014] The second clamping assembly includes a pair of second clamps that are hinged to each other. One side of each second clamp has a bent section that bends toward the other second clamp. The bending sections of the two second clamps work together to limit and clamp the moving contact. The other sides of the two second clamps are hinged to each other, and each of the two second clamps is driven by an electric push-pull rod to swing, thereby limiting or releasing the moving contact.

[0015] The advantages of this invention are as follows: by adding the anti-disengagement mechanism for opening and the anti-disengagement mechanism for closing, the moving contact in the open state and the moving contact in the closed state are respectively restricted and maintained, so that the moving contact can be well kept in the open or closed position, avoiding insulation breakdown or burnout caused by insufficient break distance or separation of moving and stationary contacts due to large swing of the disconnecting switch, which would endanger the normal operation of the substation and the personal safety of personnel. Moreover, there is no interference during normal opening and closing, thus ensuring that the disconnecting switch can still operate normally under harsh conditions.

[0016] The design of the tripping anti-disengagement mechanism uses a transition plate to connect the first pull rod body with the operating insulator. This allows the first pull rod body to move synchronously when the operating mechanism is activated. As a result, no additional active drive component is needed for the tripping anti-disengagement mechanism, simplifying the structure.

[0017] The design of the closing anti-disengagement mechanism uses two electric push-pull rods to directly pull the two second clamps to swing, which can achieve stable operation of the two second clamps and provide a more stable clamping force for the second clamps. This avoids excessive operating force on the moving contact during closing, which would cause the second clamps to be unable to stably restrict the moving contact.

[0018] The horizontal telescopic disconnector anti-vibration and anti-disengagement device of the present invention can prevent the disconnector from swinging significantly under earthquake action, which would lead to insufficient break distance and insulation breakdown that endangers personal safety, and prevent the disconnector from collapsing or burning due to the separation of moving and stationary contacts in the closed state caused by an earthquake. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the anti-vibration and anti-disengagement device for the horizontal telescopic disconnector of the present invention.

[0020] Figure 2 This is a schematic diagram of the closing anti-disengagement mechanism in this invention.

[0021] Figure 3 This is a schematic diagram of the tripping and anti-disengagement mechanism in this invention.

[0022] Figure 4 This is a schematic diagram of the operation of the tripping and anti-disengagement mechanism in this invention.

[0023] Figure 5 This is a schematic diagram of the operation of the closing anti-disengagement mechanism in this invention. Detailed Implementation

[0024] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0025] like Figures 1-5 The horizontal telescopic disconnector anti-vibration and anti-disengagement device shown includes a base 1, an operating mechanism, a telescopic conductive arm, and a moving contact 9 and a stationary contact 10 that cooperate with each other.

[0026] An operating insulator 4 and a post insulator 5 are installed on the base 1. The operating insulator 4 and the post insulator 5 are respectively located on both sides of the upper end face of the base 1. A conductive seat 6 is connected to the top of the operating insulator 4. One side of the conductive seat 6 is movably connected to the operating insulator 4. A vertically arranged connecting shaft 41 is also provided at the top of the operating insulator 4. A connecting seat 61 is also installed on the conductive seat 6. The connecting shaft 41 passes through the connecting seat 61 from bottom to top. A through hole is opened on the connecting seat 61 to allow the connecting shaft 41 to pass through. A bearing is also provided between the connecting seat 61 and the connecting shaft 41. The other side of the conductive seat 6 is fixed to the post insulator 5.

[0027] A telescopic conductive arm is installed on the side where the conductive base 6 is fixed to the post insulator 5. The telescopic conductive arm includes a first conductive rod 7 and a second conductive rod 8 that are hinged to each other. One side of the first conductive rod 7 is hinged to the conductive base 6, and a moving contact 9 is installed on the other side of the second conductive rod 8. The telescopic conductive arm is driven to swing by an operating mechanism installed on the base 1, thereby driving the moving contact 9 to approach or move away from the stationary contact 10 to realize the opening and closing of the circuit breaker.

[0028] A tripping anti-disengagement mechanism is installed on the conductive base 6 to cooperate with the moving contact 9, and a closing anti-disengagement mechanism is installed at the stationary contact 10 to cooperate with the moving contact 9.

[0029] like Figure 3 As shown in the schematic diagram, the tripping and anti-disengagement mechanism includes a first pull rod assembly and a first clamping assembly.

[0030] The first pull rod assembly includes a first pull rod body 11. One side of the first pull rod body 11 is connected to the operating insulator 4 via a transition plate 14 and moves in tandem with the operation insulator 4. The cooperation between the first pull rod body 11 and the operation insulator 4 is as follows: the operating mechanism includes an operating box 2 and an operating rod 3 vertically connected to the top of the operating box 2. The operating rod 3 is driven to rotate by the operating box 2. The operating rod 3 is vertically arranged and connected to the operation insulator 4, driving the operation insulator 4 to rotate, thereby driving the telescopic conductive arm to move. The specific structure and principle of the operating mechanism driving the operation insulator 4 to rotate are conventional drives of existing horizontal telescopic disconnect switches, and will not be described in detail in this embodiment.

[0031] The transition plate 14 is an arc-shaped plate. One side of the transition plate 14 is hinged to the operating insulator 4 and swings horizontally as the operating insulator 4 rotates. The other side of the transition plate 14 is hinged to the first pull rod body 11 and drives the first pull rod body 11 to move horizontally, thereby driving the first clamping assembly to move closer to or away from the moving contact 9. For the design of the tripping anti-disengagement mechanism, the connection between the first pull rod body 11 and the operating insulator 4 is achieved through the cooperation of the transition plate 14. Thus, the first pull rod body 11 can be driven to move synchronously when the operating mechanism is activated. Therefore, no additional active drive component is needed for the action of the tripping anti-disengagement mechanism, simplifying the structure.

[0032] The other side of the first pull rod body 11 is connected to the first clamping assembly, and drives the first clamping assembly to move closer to or away from the moving contact 9 in the open state.

[0033] The first clamp assembly includes a pair of first clamps that are hinged to each other. The first clamp includes a pair of first clamp bodies that are arranged in a scissor-like manner. The first clamp body is composed of a first clamp segment 12 and a second clamp segment 13. The first clamp segment 12 is in the shape of a figure 7, and the second clamp segment 13 is in the shape of a rectangle. The two first clamp segments 12 are hinged to each other on the side closest to the second clamp segment 13. The second clamp segments 13 of the two first clamp bodies are arranged in a V-shape. The side of the two second clamp segments 13 away from the first clamp segment 12 is hinged to the first pull rod body 11, and the hinge point of the two second clamp segments 13 and the first pull rod body 11 is the same point. The other side of the two second clamp segments 13 is respectively hinged to the two first clamp segments 12.

[0034] like Figure 2 As shown in the schematic diagram, the closing anti-disengagement mechanism includes a second pull rod assembly and a second clamping assembly.

[0035] The second lever assembly includes a pair of parallel electric push-pull levers 15. The two electric push-pull levers 15 work together to move the second clamping assembly closer to or away from the moving contact 9 in the closed state. The stationary contact 10 is mounted on a stationary contact terminal block 17. Both electric push-pull levers 15 are mounted on the stationary contact terminal block 17. The control box 2 also contains a remote control for controlling the action of the electric push-pull levers 15 and a micro switch for pressing the remote control to perform the action.

[0036] The second clamping assembly includes a pair of hinged second clamps 16. One side of each second clamp 16 has a bent section 161 that bends towards the other second clamp 16. The bent sections 161 of the two second clamps 16 work together to limit and clamp the moving contact 9. The other sides of the two second clamps 16 are hinged to each other, and the hinge points of the two second clamps 16 are also hinged to the stationary contact terminal block 17. Each of the two second clamps 16 is driven by an electric push-pull rod 15 to swing, thereby limiting or releasing the moving contact 9. For the design of the closing anti-disengagement mechanism, the cooperation of the two electric push-pull rods 15 directly pulls the two second clamps 16 to swing, which can achieve stable operation of the two second clamps 16 and provide a more stable clamping force for the second clamps. This avoids excessive operating force on the moving contact during closing, which would cause the second clamps to be unable to stably limit the moving contact.

[0037] Working principle: During opening, the operating box 2 drives the operating rod 3 to rotate. The rotation of the operating rod 3 drives the operating insulator 4 to rotate, which in turn drives the first conductive rod 7 to rotate, causing the second conductive rod 8 to retract. Simultaneously, the first pull rod body 11, along with the rotation of the operating insulator 4, pushes the first clamping assembly towards the moving contact 9. When the moving contact 9 is in the open position, the two first clamping sections 12 cooperate to clamp the moving contact 9, thus restricting the moving contact 9 to the open position by the opening anti-disengagement mechanism. Figure 4 As shown.

[0038] During closing, the operating box 2 drives the operating rod 3 to rotate. The rotation of the operating rod 3 causes the operating insulator 4 to rotate, which in turn causes the first conductive rod 7 to rotate, resulting in the second conductive rod 8 extending. After the moving contact 9 penetrates the stationary contact 10 and is in the closed position, the two electric push-pull rods 15 actuate, pushing the second clamp 16 to clamp the moving contact 9. This ensures that the moving contact 9 is limited to the closed position by the closing anti-disengagement mechanism. Figure 5 As shown.

[0039] The horizontal telescopic disconnector anti-seismic anti-disengagement device of the present invention, through the combined action of the added anti-disengagement mechanism for opening and closing, respectively restricts and maintains the moving contact in the open and closed states. This ensures that the moving contact is well held in either the open or closed position. It prevents the disconnector from experiencing insulation breakdown or burnout due to insufficient contact distance or separation of moving and stationary contacts caused by large swings during earthquakes, which could endanger the normal operation of the substation and the safety of personnel. It also prevents the disconnector from collapsing or burning due to separation of moving and stationary contacts during the closed state caused by an earthquake. Furthermore, it does not interfere with normal opening and closing operations, thus ensuring the disconnector can operate normally under harsh conditions. The device is simple in structure, reliable in operation, easy to install, and low in cost.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A horizontal telescopic disconnector anti-vibration and anti-disengagement device, characterized in that: It includes a base, an operating mechanism, a telescopic conductive arm, and cooperating moving and stationary contacts; An operating insulator and a post insulator are installed on the base. The top of the operating insulator is connected to a conductive seat. A telescopic conductive arm is installed on the conductive seat. The telescopic conductive arm includes a first conductive rod and a second conductive rod that are hinged to each other. One side of the first conductive rod is hinged to the conductive seat, and a moving contact is installed on the other side of the second conductive rod. The telescopic conductive arm is driven to swing by an operating mechanism installed on the base, thereby driving the moving contact to approach or move away from the stationary contact to realize the opening and closing of the circuit breaker. The conductive base is equipped with a tripping anti-disconnection mechanism for cooperating with the moving contact, and a closing anti-disconnection mechanism for cooperating with the moving contact is installed at the stationary contact. The tripping anti-disengagement mechanism includes a first pull rod assembly and a first clamping assembly; The first pull rod assembly includes a first pull rod body. One side of the first pull rod body is connected to the operating insulator through a transition plate and moves with the operation of the operating insulator. The other side of the first pull rod body is connected to a first clamping assembly and drives the first clamping assembly to move closer to or away from the moving contact in the open state. The closing anti-disengagement mechanism includes a second pull rod assembly and a second clamping assembly; The second pull rod assembly includes a pair of parallel electric push-pull rods, which work together to move the second clamping assembly closer to or further away from the moving contact in the closed state.

2. The anti-vibration and anti-disengagement device for the horizontal telescopic disconnector according to claim 1, characterized in that: The first clamp assembly includes a pair of first clamps that are hinged to each other. The first clamp includes a pair of first clamp bodies that are arranged in a scissor-like manner. The first clamp body is composed of a first clamp segment and a second clamp segment. The first clamp segment is in the shape of a figure 7, and the two first clamp segments are hinged to each other on the side closest to the second clamp segment. The second clamp segments of the two first clamp bodies are arranged in a V-shape. The side of each of the two second clamp segments away from the first clamp segment is hinged to the first pull rod body, and the hinge point between the two second clamp segments and the first pull rod body is the same point. The other side of each of the two second clamp segments is hinged to the two first clamp segments respectively.

3. The anti-vibration and anti-disengagement device for the horizontal telescopic disconnector according to claim 1, characterized in that: The cooperation between the first pull rod body and the operating insulator is as follows: the operating mechanism includes an operating box and an operating rod vertically connected to the top of the operating box. The operating rod is vertically set and connected to the operating insulator, and drives the operating insulator to rotate, thereby driving the telescopic conductive arm to move. The transition plate is an arc-shaped plate. One side of the transition plate is hinged to the operating insulator and swings horizontally as the operating insulator rotates. The other side of the transition plate is hinged to the first pull rod body and drives the first pull rod body to move horizontally, thereby driving the first clamping assembly to move closer to or away from the moving contact.

4. The anti-vibration and anti-disengagement device for the horizontal telescopic disconnector according to claim 1, characterized in that: The second clamping assembly includes a pair of second clamps that are hinged to each other. One side of each second clamp has a bent section that bends toward the other second clamp. The bending sections of the two second clamps work together to limit and clamp the moving contact. The other sides of the two second clamps are hinged to each other, and each of the two second clamps is driven by an electric push-pull rod to swing, thereby limiting or releasing the moving contact.

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