GW6B type disconnecting switch icebreaking device

Abstract

The utility model relates to an icebreaking device for a GW6B type isolating switch. The icebreaking device comprises a moving contact and a static contact which are matched with each other, the static contact is installed on a static contact seat and located at the bottom end of the static contact seat, and the moving contact is installed on a conductive arm. The static contact seat is provided with a static contact anti-icing cover for protecting the static contact; the static contact anti-icing cover is provided with a protection cavity for covering the static contact; the side part of the conductive arm is provided with a moving contact anti-icing cover for protecting the moving contact, the moving contact anti-icing cover comprises a pair of icebreaking plates distributed on the two sides of the moving contact, and the two icebreaking plates are switched between a first position and a second position along with the switching-on and switching-off actions of the moving contact.

Description

Technical Field

[0001] This utility model relates to the field of disconnect switches, and in particular to a GW6B type disconnect switch ice-breaking device. Background Technology

[0002] The GW6B disconnector is a double-arm vertical telescopic (scissor-type) structure that can be equipped with a grounding switch and is mainly used in substations. This disconnector consists of a base, a post insulator, an operating insulator, an upper conductive section, and an operating mechanism. The post insulator is mounted on the base, and the upper conductive section is mounted above the post insulator. The operating insulator has a mounting hole for the conductive base and a lower mounting hole for connecting the operating crank arm, which is connected to the operating rod. The operating mechanism drives the operating crank arm via the operating rod, which in turn rotates the operating insulator, thus completing the opening and closing of the disconnector.

[0003] The GW6B type disconnect switch has a large market demand. Due to the special double-arm vertical telescopic breaking structure of the GW6B, conventional ice-breaking devices cannot be installed. Therefore, in cold winters and freezing rain weather, without a special ice-breaking structure, rainwater will form a thick layer of ice on the surface of the disconnect switch, causing the disconnected line to frequently fail to operate effectively when closing or opening.

[0004] Therefore, it is evident that the design of adding an ice-breaking structure to the GW6B disconnector is essential to ensure reliable closing and opening operations during freezing rain and to improve the reliability of line operation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a GW6B type disconnector ice-breaking device to solve the problem that disconnectors cannot reliably open and close due to surface ice accumulation during freezing rain weather.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a GW6B type isolating switch ice-breaking device, the innovation of which is: including a moving contact and a stationary contact that cooperate with each other;

[0007] The stationary contact is mounted on a stationary contact seat and located at the bottom of the stationary contact seat. The moving contact is mounted on a conductive arm and located on the side wall of the conductive arm. The moving contact moves closer to or away from the stationary contact under the action of the conductive arm, thereby realizing the opening and closing of the circuit breaker.

[0008] The stationary contact seat is equipped with a stationary contact anti-icing cover to protect the stationary contact. The stationary contact anti-icing cover has a protective cavity that covers the stationary contact.

[0009] The side of the conductive arm is provided with a moving contact anti-icing cover to protect the moving contact. The moving contact anti-icing cover includes a pair of ice-breaking plates distributed on both sides of the moving contact, and the two ice-breaking plates switch between a first position and a second position as the moving contact opens and closes.

[0010] The first direction is defined as the horizontal direction in which the moving contact and stationary contact are distributed when the circuit is closed, and the second direction is defined as the horizontal direction perpendicular to the first direction.

[0011] In the first position, the two ice-breaking plates close together, covering the moving contact through their combined action. In this position, there is a gap between the ice-breaking plates and the moving contact in the first direction.

[0012] In the second position, the two ice-breaking plates are separated from each other and are distributed on both sides of the moving contact along the second direction, with both the ice-breaking plates and the moving contact in contact with the stationary contact.

[0013] Furthermore, the anti-icing cover for the stationary contact is composed of four anti-icing plates that are inclinedly distributed on the stationary contact seat. The four anti-icing plates and the stationary contact seat work together to form a quadrangular prism-shaped protective cavity with an opening on one side. The size of the upper bottom of the protective cavity is smaller than the size of the lower bottom of the protective cavity.

[0014] Furthermore, the bottom end of the anti-icing plate is also connected to an inclined growth plate. The growth plate is inclined in the same direction as the anti-icing plate, and the bottom end of the growth plate extends from the bottom side of the anti-icing plate.

[0015] Furthermore, the connection between the ice-breaking plate and the conductive arm is as follows: the two ice-breaking plates are fixed to the conductive arm by a pair of parallel elastic connectors, and each elastic connector is connected to the two ice-breaking plates.

[0016] The elastic connector includes a conductive arm connecting section in the middle, deformable sections connected to both sides of the conductive arm connecting section, and an ice-breaking plate connecting section connected to the other side of the two deformable sections. The conductive arm connecting section is fixed to the conductive arm by bolts and nuts. The two deformable sections are distributed on both sides of the conductive arm and are connected to both sides of the conductive arm connecting section in an inverted V-shape. The two ice-breaking plate connecting sections are formed by bending the ends of the deformable sections horizontally towards the other deformable section. The ice-breaking plate connecting sections are fixed to the ice-breaking plate by bolts and nuts.

[0017] Furthermore, the conductive arm connecting section and the moving contact are fixed to the conductive arm by the same set of bolts and nuts.

[0018] Furthermore, pads are also provided on the conductive arm connecting section and the conductive arm.

[0019] Furthermore, the ice-breaking plate is a polytetrafluoroethylene (PTFE) plate.

[0020] The advantages of this utility model are as follows: The ice-breaking device of this utility model guides rainwater out through the anti-icing cover of the stationary contact to avoid ice accumulation on the surface of the stationary contact. It uses the cooperation of two ice-breaking plates to protect the moving contact and prevent ice accumulation on the surface of the moving contact. In addition, the separation action of the two ice-breaking plates can break the ice layer prevented by the ice-breaking plates when closing the circuit, so that the moving contact can smoothly contact the stationary contact to close the circuit.

[0021] The connection between the ice-breaking plate and the conductive arm is achieved by a pair of elastic connectors, which allows the ice-breaking plate to open or close stably. The design of the elastic connectors adopts a combination of conductive arm connecting section, deformation section and ice-breaking plate connecting section. During the opening and closing process, the two ice-breaking plates can be opened or closed by the deformation of the deformation section itself, without the need to add an additional active drive component to realize the movement of the ice-breaking plate, thus simplifying the structure.

[0022] The extension plate added to the bottom of the anti-icing plate is used to enhance the protection of the stationary contact, increase the coverage of the anti-icing plate, and better protect the stationary contact from icing. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the GW6B type isolating switch ice-breaking device of this utility model.

[0024] Figure 2 For Figure 1 Enlarged schematic diagram of part A.

[0025] Figure 3 This is a schematic diagram of the anti-icing cover for the stationary contact in this utility model.

[0026] Figure 4 This is another schematic diagram of the anti-icing cover for the stationary contact in this utility model.

[0027] Figure 5 This is a schematic diagram of the anti-icing cover for the moving contact in this utility model. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0029] like Figures 1-5 The GW6B type disconnect switch ice-breaking device shown includes a conductive arm 1, a moving contact 2, a stationary contact 3, a stationary contact seat 31, and an operating mechanism.

[0030] The stationary contact 3 is mounted on a stationary contact base 31 and located at the bottom of the stationary contact base 31. There are two moving contacts 2, which are mounted on the conductive arms 1 and located on the side wall of the conductive arms 1. The two conductive arms 1 are scissor-hinged on the base 11 and are driven by the operating mechanism to move the moving contacts 2 closer to or away from the stationary contact 3, thereby realizing the opening and closing of the circuit breaker.

[0031] An anti-icing cover for the stationary contact 3 is installed on the stationary contact base 31. The anti-icing cover for the stationary contact 3 has a protective cavity that covers the stationary contact 3.

[0032] like Figure 3 , Figure 4 As shown in the schematic diagram, the anti-icing cover for the stationary contact is composed of four anti-icing plates 32 that are inclinedly distributed on the stationary contact base 31. All anti-icing plates 32 are isosceles trapezoidal plates. The inclination direction of the anti-icing plates 32 is from the side where the anti-icing plate 32 is connected to the stationary contact base 31 and gradually tilts away from the stationary contact 3. The four anti-icing plates 32 and the stationary contact base 31 work together to form a quadrangular prism-shaped protective cavity with an opening on one side. The size of the upper base of the protective cavity is smaller than the size of the lower base of the protective cavity.

[0033] An inclined extension plate 33 is connected to the bottom end of the anti-icing plate 32. The extension plate 33 is a rectangular plate and is connected to the anti-icing plate 32 by bolts and nuts. The extension plate 33 is inclined in the same direction as the anti-icing plate 32, and its bottom end extends from the bottom side of the anti-icing plate 32. A gap is left between two adjacent extension plates 33. The extension plate 33 added to the bottom end of the anti-icing plate 32 is used to enhance the protection of the stationary contact 3, increase the coverage of the anti-icing plate 32, and better protect the stationary contact 3 from icing.

[0034] An anti-icing cover for the moving contact 2 is provided on the side of the conductive arm 1. The anti-icing cover for the moving contact 2 includes a pair of ice-breaking plates 4 distributed on both sides of the moving contact 2. The ice-breaking plates 4 are made of polytetrafluoroethylene and are rectangular plates. The two ice-breaking plates 4 switch between a first position and a second position as the moving contact 2 opens and closes.

[0035] When the circuit is closed, the horizontal direction in which the moving contact 2 and the stationary contact 3 are distributed is defined as the first direction, and the horizontal direction perpendicular to the first direction is defined as the second direction.

[0036] In the first position, the two ice-breaking plates 4 close together, covering the moving contact 2 through their combined action. In this position, a gap remains between the ice-breaking plates 4 and the moving contact 2 in the first direction. Figure 5 As shown.

[0037] In the second position, the two ice-breaking plates 4 are separated from each other, and the two ice-breaking plates 4 are distributed on both sides of the moving contact 2 along the second direction. Both the ice-breaking plates 4 and the moving contact 2 are in contact with the stationary contact 3. Figure 2 As shown.

[0038] The connection between the ice-breaking plate 4 and the conductive arm 3 is as follows: the two ice-breaking plates 4 are fixed to the conductive arm 1 by a pair of parallel elastic connectors, and each elastic connector is connected to the two ice-breaking plates 4. The two elastic connectors are distributed on the conductive arm 1 along the long axis of the conductive arm 1.

[0039] The elastic connector includes a conductive arm connecting section 41 located in the middle, deformable sections 42 connected on both sides of the conductive arm connecting section 41, and an ice-breaking plate connecting section 43 connected on the other side of the two deformable sections 42.

[0040] The conductive arm connecting section 41 is fixed to the conductive arm 1 by bolts and nuts, and the moving contact 2 is also fixed to the conductive arm 1 by bolts and nuts. Based on this, the conductive arm connecting section 41 and the moving contact 2 are fixed to the conductive arm 1 by the same set of bolts and nuts, which can reduce the number of fasteners required and make the structure simpler.

[0041] Two deformation segments 42 are distributed on both sides of the conductive arm 1 and connected to both sides of the conductive arm connecting segment 41 in an inverted V-shape. Two ice-breaking plate connecting segments 43 are formed by bending the ends of the deformation segments 42 horizontally towards the other deformation segment 42. The two ice-breaking plate connecting segments 43 are connected and fixed to the two ice-breaking plates 4 one-to-one by bolts and nuts. In this embodiment, the conductive arm connecting segment 41, deformation segment 42 and ice-breaking plate connecting segment 43 are integrally processed from a long strip of metal plate or metal sheet by bending. The structural characteristics of the metal itself are used to meet the elastic requirements of the elastic connector, thereby realizing the opening or closing of the ice-breaking plate 4.

[0042] The connection between the ice-breaking plate 4 and the conductive arm 1 is achieved by a pair of elastic connectors, which enables the ice-breaking plate 4 to open or close stably, making the operation more stable. The design of the elastic connector adopts a combination of conductive arm connecting section 41, deformation section 42 and ice-breaking plate connecting section 43. During the opening and closing process, the two ice-breaking plates can be opened or closed by the deformation of the deformation section 42 itself, without the need to add an additional active drive component to realize the action of the ice-breaking plate, thus simplifying the structure.

[0043] A pad 44 is also provided on the conductive arm connecting section 41 and the conductive arm 1. The design of the pad 44 is to leave a certain gap between the conductive arm connecting section 41 and the conductive arm 1. This gap provides a basis for the subsequent deformation section 42 to deform better, and avoids interference caused by the presence of the conductive arm 1 when the deformation section 42 deforms, which would affect the ice-breaking action of the ice-breaking plate 4.

[0044] The GW6B type disconnector ice-breaking device of this utility model protects the stationary contact 3 by adding an anti-icing cover to the stationary contact 3. In rainy or snowy weather, freezing rain will flow down the surface of the anti-icing cover and will not condense on the surface of the stationary contact 3, thus effectively protecting the stationary contact 3.

[0045] As for the moving contact 2, it is protected by an additional ice-proof cover. When the circuit is open, the deformation section 42 is in a relaxed state, and the two ice-breaking plates 4 on the same side are in a close-fitting state, so freezing rain cannot condense on the surface of the moving contact 2. When the circuit is closed, the deformation section 42 opens to both sides due to the squeezing force, which drives the two ice-breaking plates 4 to break the surface ice and expose the moving contact 2, so that the moving contact 2 can make contact with the stationary contact and realize the closing.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. 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 utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A GW6B type disconnect switch ice-breaking device, characterized in that: This includes moving contacts and stationary contacts that cooperate with each other; The stationary contact is mounted on a stationary contact seat and located at the bottom of the stationary contact seat. The moving contact is mounted on a conductive arm and located on the side wall of the conductive arm. The moving contact moves closer to or away from the stationary contact under the action of the conductive arm, thereby realizing the opening and closing of the circuit breaker. The stationary contact seat is equipped with a stationary contact anti-icing cover to protect the stationary contact. The stationary contact anti-icing cover has a protective cavity that covers the stationary contact. The side of the conductive arm is provided with a moving contact anti-icing cover to protect the moving contact. The moving contact anti-icing cover includes a pair of ice-breaking plates distributed on both sides of the moving contact, and the two ice-breaking plates switch between a first position and a second position as the moving contact opens and closes. The first direction is defined as the horizontal direction in which the moving contact and stationary contact are distributed when the circuit is closed, and the second direction is defined as the horizontal direction perpendicular to the first direction. In the first position, the two ice-breaking plates close together, covering the moving contact through their combined action. In this position, there is a gap between the ice-breaking plates and the moving contact in the first direction. In the second position, the two ice-breaking plates are separated from each other and are distributed on both sides of the moving contact along the second direction, with both the ice-breaking plates and the moving contact in contact with the stationary contact.

2. The GW6B type disconnector ice-breaking device according to claim 1, characterized in that: The anti-icing cover for the stationary contact is composed of four anti-icing plates that are inclinedly distributed on the stationary contact seat. The four anti-icing plates and the stationary contact seat work together to form a quadrangular prism-shaped protective cavity with an opening on one side. The size of the upper bottom of the protective cavity is smaller than the size of the lower bottom of the protective cavity.

3. The GW6B type disconnector ice-breaking device according to claim 2, characterized in that: The bottom end of the anti-icing plate is also connected to an inclined growth plate. The growth plate is inclined in the same direction as the anti-icing plate, and the bottom end of the growth plate extends from the bottom side of the anti-icing plate.

4. The GW6B type disconnector ice-breaking device according to claim 1, characterized in that: The connection between the ice-breaking plate and the conductive arm is as follows: the two ice-breaking plates are fixed to the conductive arm by a pair of parallel elastic connectors, and each elastic connector is connected to the two ice-breaking plates. The elastic connector includes a conductive arm connecting section in the middle, deformable sections connected to both sides of the conductive arm connecting section, and an ice-breaking plate connecting section connected to the other side of the two deformable sections. The conductive arm connecting section is fixed to the conductive arm by bolts and nuts. The two deformable sections are distributed on both sides of the conductive arm and are connected to both sides of the conductive arm connecting section in an inverted V-shape. The two ice-breaking plate connecting sections are formed by bending the ends of the deformable sections horizontally towards the other deformable section. The ice-breaking plate connecting sections are fixed to the ice-breaking plate by bolts and nuts.

5. The GW6B type disconnector ice-breaking device according to claim 4, characterized in that: The conductive arm connecting section and the moving contact are fixed to the conductive arm by the same set of bolts and nuts.

6. The GW6B type disconnector ice-breaking device according to claim 4, characterized in that: The conductive arm connecting section and the conductive arm are also provided with pads.

7. The GW6B type disconnector ice-breaking device according to claim 1, characterized in that: The ice-breaking plate is made of polytetrafluoroethylene.

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