Horizontal telescopic isolation switch anti-shock and anti-tripping device

Abstract

The invention relates to an anti-shock and anti-tripping device for a horizontal telescopic isolating switch. The anti-shock and anti-tripping device comprises a base, an operating mechanism, a telescopic conductive arm, a moving contact and a static contact, wherein the moving contact and the static contact are matched with each other; an operation insulator and a post insulator are installed on the base, the top end of the operation insulator is connected with a conductive seat, a telescopic conductive arm is installed on the conductive seat and comprises a first conductive rod and a second conductive rod which are hinged to each other, and a moving contact is installed on the other side of the second conductive rod. The telescopic conductive arm is driven by an operating mechanism mounted on the base to swing, so that the moving contact is driven to be close to or far away from the static contact, and switching-on and switching-off are realized; the conductive seat is provided with an opening anti-falling mechanism which is used for cooperating with the moving contact, and the static contact is provided with a closing anti-falling mechanism which is used for cooperating with the moving contact. Through the cooperation of the opening anti-falling mechanism and the closing anti-falling mechanism, the purpose of limiting and keeping the moving contact in the opening state and the moving contact in the closing state is achieved, so that the moving contact can be well kept at the opening position or the closing position.

Description

Technical Field

[0001] The invention relates to the field of isolating switches, and in particular to a seismic and anti-tripping device for a horizontal telescopic isolating switch. Background Art

[0002] Horizontal telescopic disconnectors are widely used in substations. Under normal circumstances, some are in the open state for standby, while others are in the closed state for normal operation. In the event of an earthquake, since the conductive arm of the disconnector is not stressed before the open and closed states, it is easy to swing greatly, resulting in a significant reduction in the break distance, which leads to insulation breakdown due to insufficient break distance; in the closed state, the moving contact is only subject to the clamping force of the static contact, and severe shaking can easily cause the moving and static contacts to separate and disengage. The limit device of the horizontal telescopic disconnector is difficult to design, and most of the structures cannot be installed or the installation structure is complex and costly. With the rapid development of overseas markets, especially the power grids in earthquake-prone countries such as Peru and Chile, it is urgent to design an anti-seismic and anti-tripping device to meet market demand. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a seismic and anti-tripping device for a horizontal telescopic isolating switch to prevent the isolating switch from swinging significantly due to an earthquake, resulting in insufficient break distance, and from causing the moving and static contacts to separate due to the shaking of an earthquake in the closed state.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a horizontal telescopic isolating switch anti-vibration anti-tripping device, the innovation of which is: comprising a base, an operating mechanism, a telescopic conductive arm and a movable contact and a static contact that cooperate with each other; An operating insulator and a support 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 comprises a first conductive rod and a second conductive rod hinged to each other, one side of the first conductive rod is hinged to the conductive seat, a moving contact is installed on the other side of the second conductive rod, the telescopic conductive arm is driven by an operating mechanism installed on the base to swing, thereby driving the moving contact to approach or move away from the static contact to realize opening and closing; The conductive seat is provided with an opening anti-dropping mechanism for cooperating with the moving contact, and the static contact is provided with a closing anti-dropping mechanism for cooperating with the moving contact.

[0005] Furthermore, the brake opening anti-drop mechanism includes a first pull rod assembly and a first clamp assembly; The first pull rod assembly includes a first pull rod body, one side of which is connected to the operating insulator through a transition plate and moves with the operation of the operating insulator, and the other side of the first pull rod body is connected to the first clamp assembly and drives the first clamp assembly to approach or move away from the moving contact in the open state; The first clamp assembly includes a pair of first clamps hinged to each other, the first clamp includes a pair of first clamp bodies distributed in a scissor-like manner, the first clamp body is composed of a first clamp section and a second clamp section, wherein the first clamp section is in a 7-shape, and the two first clamp sections are hinged to each other on one side close to the second clamp section, the second clamp sections of the two first clamp bodies are distributed in a V-shape, the two second clamp sections are hinged to the first pull rod body on one side away from the first clamp section, and the hinge points of the two second clamp sections and the first pull rod body are the same point, and the other sides of the two second clamp sections are respectively hinged to the two first clamp sections.

[0006] 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 arranged 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 which is hinged to the operating insulator and swings horizontally with the rotation of the operating insulator. 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 clamp assembly to approach or move away from the moving contact.

[0007] Furthermore, the closing anti-drop mechanism includes a second pull rod assembly and a second clamp assembly; The second pull rod assembly includes a pair of electric push-pull rods arranged in parallel, and the cooperation of the two electric push-pull rods drives the second clamp assembly to approach or move away from the moving contact in the closed state; The second clamp assembly includes a pair of second clamps hinged to each other, one side of the second clamp has a bending section bent toward the other second clamp, and the bending sections of the two second clamps cooperate with each other to achieve limited clamping of the moving contact, the other sides of the two second clamps are hinged to each other, and the two second clamps are driven by an electric push-pull rod to swing, thereby achieving restriction or release of the moving contact.

[0008] The advantage of the present invention is that the newly added opening anti-dropout mechanism and closing anti-dropout mechanism cooperate with each other to limit and retain the moving contact in the opening state and the moving contact in the closing state, respectively, so that the moving contact can be well maintained in the opening position or the closing position, avoiding insulation breakdown or burning caused by insufficient break distance or separation of moving and static contacts due to large swing of the disconnector, which endangers the normal operation of the substation and the personal safety of personnel, and no interference occurs during normal opening and closing, thereby ensuring that the disconnector can still operate normally under harsh conditions.

[0009] In the design of the opening anti-dropout mechanism, the connection between the first pull rod body and the operating insulator is achieved through the cooperation of the transition plate, so that the first pull rod body can be driven to move synchronously when the operating mechanism is actuated. There is no need to add an additional active driving part for the action of the opening anti-dropout mechanism, thereby simplifying the structure.

[0010] For the design of the closing anti-dropout mechanism, two electric push-pull rods are used to directly pull the two second clamps to swing, which can achieve stable movement of the two second clamps and provide a more stable clamping force for the second clamps, thereby preventing the operating force of the moving contact from being too large when closing the circuit, resulting in the second clamps being unable to stably restrict the moving contact.

[0011] The anti-seismic and anti-tripping device for the horizontal telescopic isolating switch of the present invention can meet the requirements of preventing the isolating switch from swinging significantly under the action of an earthquake, resulting in insufficient break distance and insulation breakdown that endangers personal safety, and preventing the moving and static contacts from being separated due to an earthquake in the closed state, resulting in the entire isolating switch collapsing or burning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the anti-vibration and anti-tripping device of the horizontal telescopic isolating switch of the present invention.

[0013] Figure 2 It is a schematic diagram of the closing anti-dropping mechanism in the present invention.

[0014] Figure 3 It is a schematic diagram of the gate opening anti-dropping mechanism in the present invention.

[0015] Figure 4 It is a working schematic diagram of the gate opening anti-dropping mechanism in the present invention.

[0016] Figure 5 It is a working schematic diagram of the closing anti-dropping mechanism in the present invention. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0018] like Figure 1-Figure 5 The illustrated horizontal telescopic isolating switch anti-vibration and anti-tripping device comprises 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.

[0019] An operating insulator 4 and a supporting insulator 5 are installed on the base 1. The operating insulator 4 and the supporting insulator 5 are respectively arranged on both sides of the upper end surface 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 arranged on 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 for accommodating the connecting shaft 41 to pass through is opened on the connecting seat 61, and a bearing is also arranged between the connecting seat 61 and the connecting shaft 41. The other side of the conductive seat 6 is fixed to the supporting insulator 5.

[0020] A telescopic conductive arm is installed on the side where the conductive seat 6 is fixed to the support insulator 5. The telescopic conductive arm includes a first conductive rod 7 and a second conductive rod 8 which are hinged to each other, wherein one side of the first conductive rod 7 is hinged to the conductive seat 6, and a moving contact 9 is installed on the other side of the second conductive rod 8. The telescopic conductive arm is driven by an operating mechanism installed on the base 1 to swing, thereby driving the moving contact 9 to approach or move away from the static contact 10 to realize opening and closing.

[0021] An opening anti-dropout mechanism for cooperating with the moving contact 9 is installed on the conductive seat 6 , and a closing anti-dropout mechanism for cooperating with the moving contact 9 is installed at the static contact 10 .

[0022] like Figure 3 As can be seen from the schematic diagram, the brake opening anti-dropping mechanism includes a first pull rod assembly and a first clamp assembly.

[0023] The first pull rod assembly includes a first pull rod body 11, one side of which is connected to the operating insulator 4 through a transition plate 14, and moves with the movement of the operating insulator 4. The cooperation between the first pull rod body 11 and the operating 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, and the operating rod 3 is driven to rotate by the operating box 2. The operating rod 3 is vertically arranged and connected to the operating insulator 4, and drives the operating insulator 4 to rotate, thereby driving the telescopic conductive arm to move. The specific structure and principle of the operating mechanism driving the operating insulator 4 to rotate are the conventional drive of the existing horizontal telescopic disconnector, and will not be described in detail in this embodiment.

[0024] The transition plate 14 is an arc-shaped plate, one side of which is hinged to the operating insulator 4 and swings horizontally with the rotation of the operating insulator 4. 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 clamp assembly to move closer to or away from the moving contact 9. For the design of the opening anti-dropout 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, so that the first pull rod body 11 can be driven to move synchronously when the operating mechanism moves, and there is no need to add an active drive component for the action of the opening anti-dropout mechanism, thereby simplifying the structure.

[0025] The other side of the first pull rod body 11 is connected to the first clamp assembly, and drives the first clamp assembly to approach or move away from the moving contact 9 in the open state.

[0026] The first clamp assembly includes a pair of first clamps hinged to each other, the first clamp includes a pair of first clamp bodies distributed in a scissor-like manner, the first clamp body is composed of a first clamp section 12 and a second clamp section 13, wherein the first clamp section 12 is in a 7-shape, the second clamp section 13 is in a rectangular shape, and the two first clamp sections 12 are hinged to each other on one side close to the second clamp section 13, the second clamp sections 13 of the two first clamp bodies are distributed in a V-shape, the two second clamp sections 13 are hinged to the first pull rod body 11 on one side away from the first clamp section 12, and the hinge points of the two second clamp sections 13 and the first pull rod body 11 are the same point, and the other sides of the two second clamp sections 13 are respectively hinged to the two first clamp sections 12.

[0027] like Figure 2 As can be seen from the schematic diagram, the closing anti-dropout mechanism includes a second pull rod assembly and a second clamp assembly.

[0028] The second pull rod assembly includes a pair of electric push-pull rods 15 distributed in parallel. The two electric push-pull rods 15 work together to drive the second clamp assembly to move closer to or away from the moving contact 9 in the closed state. The static contact 10 is installed on a static contact terminal block 17. Both electric push-pull rods 15 are installed on the static contact terminal block 17. A remote control for controlling the action of the electric push-pull rods 15 and a micro switch for pressing the remote control to operate are also installed in the operating box 1.

[0029] The second clamp assembly includes a pair of second clamps 16 hinged to each other, one side of the second clamp 16 has a bending section 161 bent toward the other second clamp 16, and the bending sections 161 of the two second clamps 16 cooperate to achieve the limited clamping of 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 static contact terminal block 17, and the two second clamps 16 are driven by an electric push-pull rod 15 to swing, thereby limiting or releasing the restriction on the moving contact 9. For the design of the closing anti-drop mechanism, the cooperation of two electric push-pull rods 15 is used to directly pull the two second clamps 16 to swing, which can achieve the stable movement of the two second clamps 16 and provide a more stable clamping force for the second clamps, so as to avoid the operating force of the moving contact being too large when closing the switch, which causes the second clamp to be unable to stably limit the moving contact.

[0030] Working principle: When opening the switch, the operating box 2 drives the operating rod 3 to rotate, and the rotation of the operating rod 3 drives the operating insulator 3 to rotate, and the rotation of the operating insulator 3 drives the rear first conductive rod 7 to rotate, so that the second conductive rod 8 performs a contraction movement. At the same time, the first pull rod body 11 pushes the first clamp assembly to move toward the moving contact 9 as the operating insulator 3 rotates. When the moving contact 9 is in the opening position, the moving contact 9 is clamped by the cooperation of the two first clamp sections 12, so that the moving contact 9 is restricted in the opening position by the opening anti-dropping mechanism. Figure 4 shown.

[0031] When closing the switch, the operating box 2 drives the operating rod 3 to rotate, and the rotation of the operating rod 3 drives the operating insulator 3 to rotate, and the rotation of the operating insulator 3 drives the rear first conductive rod 7 to rotate, so that the second conductive rod 8 performs an expansion movement. After the moving contact 9 penetrates into the static contact 10 and closes in place, the two electric push-pull rods 15 move to push the second clamp 16 to clamp the moving contact 9, so that the moving contact 9 is limited in the closing position by the closing anti-dropping mechanism. Figure 5 shown.

[0032] The anti-seismic and anti-tripping device of the horizontal telescopic disconnector of the present invention cooperates with the added opening anti-tripping mechanism and closing anti-tripping mechanism to respectively limit and retain the moving contact in the opening state and the moving contact in the closing state, so that the moving contact can be well maintained in the opening position or the closing position, and can meet the needs of avoiding the disconnector from swinging sharply under the action of an earthquake, resulting in insufficient break distance or separation of the moving and static contacts, which may cause insulation breakdown or burning, endangering the normal operation of the substation and the personal safety of personnel, and the separation of the moving and static contacts due to an earthquake in the closing state, which may cause the disconnector to collapse or burn as a whole, and no interference will occur during normal opening and closing, thereby ensuring that the disconnector can still operate normally under harsh conditions, with a simple structure, reliable operation, easy installation and low cost.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A horizontal telescopic isolating switch anti-vibration and anti-tripping device, characterized in that: It includes a base, an operating mechanism, a telescopic conductive arm, and a moving contact and a static contact that cooperate with each other; An operating insulator and a support 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 comprises a first conductive rod and a second conductive rod hinged to each other, one side of the first conductive rod is hinged to the conductive seat, a moving contact is installed on the other side of the second conductive rod, the telescopic conductive arm is driven by an operating mechanism installed on the base to swing, thereby driving the moving contact to approach or move away from the static contact to realize opening and closing; The conductive seat is provided with an opening anti-dropping mechanism for cooperating with the moving contact, and the static contact is provided with a closing anti-dropping mechanism for cooperating with the moving contact.

2. The anti-vibration and anti-tripping device for the horizontal telescopic isolating switch according to claim 1 is characterized in that: The brake opening anti-drop mechanism comprises a first pull rod assembly and a first clamp assembly; The first pull rod assembly includes a first pull rod body, one side of which is connected to the operating insulator through a transition plate and moves with the operation of the operating insulator, and the other side of the first pull rod body is connected to the first clamp assembly and drives the first clamp assembly to approach or move away from the moving contact in the open state; The first clamp assembly includes a pair of first clamps hinged to each other, the first clamp includes a pair of first clamp bodies distributed in a scissor-like manner, the first clamp body is composed of a first clamp section and a second clamp section, wherein the first clamp section is in a 7-shape, and the two first clamp sections are hinged to each other on one side close to the second clamp section, the second clamp sections of the two first clamp bodies are distributed in a V-shape, the two second clamp sections are hinged to the first pull rod body on one side away from the first clamp section, and the hinge points of the two second clamp sections and the first pull rod body are the same point, and the other sides of the two second clamp sections are respectively hinged to the two first clamp sections.

3. The anti-vibration and anti-tripping device of the horizontal telescopic isolating switch according to claim 1 is 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 arranged 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 which is hinged to the operating insulator and swings horizontally with the rotation of the operating insulator. 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 clamp assembly to approach or move away from the moving contact.

4. The anti-vibration and anti-tripping device for the horizontal telescopic isolating switch according to claim 1 is characterized in that: The closing anti-drop mechanism comprises a second pull rod assembly and a second clamp assembly; The second pull rod assembly includes a pair of electric push-pull rods arranged in parallel, and the cooperation of the two electric push-pull rods drives the second clamp assembly to approach or move away from the moving contact in the closed state; The second clamp assembly includes a pair of second clamps hinged to each other, one side of the second clamp has a bending section bent toward the other second clamp, and the bending sections of the two second clamps cooperate with each other to achieve limited clamping of the moving contact, the other sides of the two second clamps are hinged to each other, and the two second clamps are driven by an electric push-pull rod to swing, thereby achieving restriction or release of the moving contact.

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