GW6B type disconnecting switch icebreaking device
By designing the ice-breaking device of the GW6B type isolating switch, using the cooperation of the moving contacts and the static contacts and the protection of the anti-icing cover, the problem of the isolating switch being unable to open and close in freezing rain weather is solved, and reliable operation under cold conditions is achieved. operate.
Patent Information
- Application Number
- CN202411808710.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-01-21
AI Technical Summary
The GW6B type isolation switch cannot be reliably opened and closed due to surface ice in freezing weather.
A GW6B type isolating switch ice-breaking device is designed, including a moving contact and a static contact that cooperate with each other. The static contact is installed on the static contact base, and the moving contact is installed on the conductive arm, which drives the moving contact through the conductive arm. Close or move away from the static contact to achieve opening and closing. At the same time, the static contacts and moving contacts are each equipped with anti-icing covers to prevent the formation of ice layers, and the action of the ice-breaking plate is realized through elastic connectors.
It effectively avoids the formation of ice layer on the surface of static contacts and moving contacts, ensuring that opening and closing operations can be reliably realized in freezing rain weather, and improving the reliability of line operation.
Smart Images
Figure CN119340147A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of disconnectors, and in particular to an ice-breaking device for a GW6B disconnector. Background Art
[0002] GW6B type disconnector is a double-arm vertical telescopic (scissor type) structure, which can be attached with a grounding switch and is mainly used in substations. The disconnector consists of a base, a support insulator, an operating insulator, an upper conductive part and an operating mechanism. The support insulator is installed on the base, the upper conductive part is installed above the support insulator, the upper mounting hole of the operating insulator is connected to the conductive base, and the lower mounting hole is connected to the operating crank arm, which is connected to the operating rod. The operating mechanism drives the operating crank arm through the operating rod, and the operating crank arm drives the operating insulator to rotate, thereby completing the opening and closing of the disconnector.
[0003] GW6B disconnectors are widely used in the market. Due to the special double-arm vertical telescopic breaking structure of GW6B, conventional ice-breaking devices cannot be installed. Therefore, in cold winter and freezing rain weather, without a special ice-breaking structure, rainwater will form a thick layer of ice on the surface of the disconnector, resulting in the line isolation often being unable to effectively close or open the switch.
[0004] It can be seen that it is very necessary to add an ice-breaking structure to the design of the GW6B disconnector to ensure reliable closing and opening operations in freezing rain weather and improve the reliability of line operation. Summary of the invention
[0005] The technical problem to be solved by the present invention is to provide a GW6B type isolating switch ice breaking device to solve the problem that the isolating switch cannot be reliably opened and closed due to ice covering the surface in freezing rain weather.
[0006] In order to solve the above technical problems, the technical solution of the present invention is: a GW6B type disconnector ice breaking device, the innovation of which is: comprising a movable contact and a static contact that cooperate with each other; The static contact is mounted on a static contact seat and is located at the bottom end of the static contact seat, the moving contact is mounted on a conductive arm and is located at the side wall of the conductive arm, and the moving contact is driven by the conductive arm to approach or move away from the static contact, thereby realizing opening and closing; The static contact seat is provided with a static contact anti-icing cover for protecting the static contact, and the static contact anti-icing cover has a protection cavity covering the static contact; A moving contact anti-icing cover is provided on the side of the conductive arm to protect the moving contact, and 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; It is defined that when the circuit breaker is closed, the horizontal direction in which the moving contact and the static contact are distributed is the first direction, and the horizontal direction perpendicular to the first direction is the second direction; In the first position, the two ice-breaking plates are closed together, and the moving contact is covered by the cooperation of the two ice-breaking plates. In this position, a gap is left 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 the two ice-breaking plates are distributed on both sides of the moving contact along the second direction, and the ice-breaking plates and the moving contact are both in contact with the static contact.
[0007] Furthermore, the static contact anti-icing cover is composed of four anti-icing plates obliquely distributed on the static contact seat, and the four anti-icing plates cooperate with the static contact seat to form a quadrangular prism-shaped protection cavity with an opening on the lower side, and the size of the upper bottom of the protection cavity is smaller than the size of the lower bottom of the protection cavity.
[0008] Furthermore, the bottom end of the anti-icing plate is also connected to an inclined growth plate, the growth plate is inclined, and the inclination direction of the growth plate is the same as the inclination direction of the correspondingly connected anti-icing plate, and the bottom end of the growth plate extends from the bottom side of the anti-icing plate.
[0009] Furthermore, the connection between the icebreaker plates and the conductive arm is as follows: the two icebreaker plates are fixed on the conductive arm through the cooperation of a pair of elastic connectors distributed in parallel, and each elastic connector is connected to the two icebreaker plates; The elastic connecting member includes a conductive arm connecting section located in the middle, a deformation section connected to both sides of the conductive arm connecting section, and an icebreaker plate connecting section connected to the other side of the two deformation sections, wherein the conductive arm connecting section is fixed to the conductive arm by the cooperation of bolts and nuts, the two deformation 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 figure eight shape, the two icebreaker plate connecting sections are respectively formed by horizontally bending the ends of the deformation sections toward the other deformation sections, and the icebreaker plate connecting section is fixed to the icebreaker plate by the cooperation of bolts and nuts.
[0010] Furthermore, the conductive arm connecting section and the moving contact are fixed on the conductive arm by means of a same set of bolts and nuts.
[0011] Furthermore, pads are provided on the conductive arm connecting section and the conductive arm.
[0012] Furthermore, the ice-breaking plate is a polytetrafluoroethylene plate.
[0013] The advantages of the present invention are as follows: the ice-breaking device of the present invention guides rainwater to flow out through the anti-ice cover of the static contact to prevent ice from covering the surface of the static contact, and utilizes the cooperation of two ice-breaking plates to protect the moving contact to prevent ice from covering the surface of the moving contact. In addition, the separation action of the two ice-breaking plates can prevent the ice layer from being broken when closing the switch, thereby facilitating the smooth contact and closing of the moving contact with the static contact.
[0014] The connection between the icebreaker plate and the conductive arm is achieved by a pair of elastic connectors, so that the icebreaker plate can be stably opened or closed. As for the design of the elastic connector, a combination of a conductive arm connecting section, a deformation section and an icebreaker plate connecting section is adopted. During the opening and closing process, the two icebreaker plates can be opened or closed by the deformation of the deformation section itself. There is no need to add an active driving part to realize the movement of the icebreaker plate, thereby simplifying the structure.
[0015] The growth plate added at the bottom of the anti-icing plate is used to provide enhanced protection for the static contact, increase the coverage of the anti-icing plate, and better provide anti-icing protection for the static contact. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the GW6B type isolating switch ice breaking device of the present invention.
[0017] Figure 2 for Figure 1 A magnified schematic diagram of part A.
[0018] Figure 3 It is a schematic diagram of the anti-icing cover of the static contact in the present invention.
[0019] Figure 4 It is a schematic diagram of the anti-icing cover of the static contact in the present invention from another angle.
[0020] Figure 5 It is a schematic diagram of the anti-icing cover of the moving contact in the present invention. DETAILED DESCRIPTION
[0021] 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.
[0022] like Figure 1-Figure 5 The GW6B type disconnector ice breaking device shown comprises a conductive arm 1, a moving contact 2, a stationary contact 3, a stationary contact seat 31 and an operating mechanism.
[0023] The static contact 3 is mounted on a static contact seat 31 and is located at the bottom end of the static contact seat 31. There are two moving contacts 2, which are respectively mounted on the conductive arms 1 and are located on the side walls of the conductive arms 1. The two conductive arms 1 are hinged on the base 11 in a scissor-shaped manner and are driven by the operating mechanism to move, thereby driving the moving contact 2 to approach or move away from the static contact 3, thereby realizing opening and closing.
[0024] A static contact anti-icing cover for protecting the static contact 3 is installed on the static contact seat 31 . The static contact anti-icing cover has a protection cavity covering the static contact 3 .
[0025] like Figure 3 , Figure 4 As can be seen from the schematic diagram shown, the static contact anti-icing cover is composed of four anti-icing plates 32 obliquely distributed on the static contact seat 31, and the anti-icing plates 32 are all isosceles trapezoidal plates. The inclination direction of the anti-icing plates 32 is from the side where the anti-icing plates 32 are connected to the static contact seat 31 and gradually inclines away from the static contact 3, and the four anti-icing plates 32 and the static contact seat 31 cooperate to form a quadrangular prism-shaped protective cavity with an opening on the lower side, and the size of the upper bottom of the protective cavity is smaller than the size of the lower bottom of the protective cavity.
[0026] The bottom end of the anti-icing plate 32 is also connected to an inclined growth plate 33, which is a rectangular plate and is connected to the anti-icing plate 32 by bolts and nuts. The growth plate 33 is inclined, and the inclination direction of the growth plate 33 is the same as the inclination direction of the corresponding anti-icing plate 32, and the bottom end of the growth plate 33 extends from the bottom side of the anti-icing plate 32, leaving a gap between two adjacent growth plates 33. The growth plate 33 added at the bottom end of the anti-icing plate 32 is used to enhance the protection of the static contact 3, increase the coverage of the anti-icing plate 32, and better protect the static contact 3 from ice.
[0027] A moving contact anti-ice cover is provided on the side of the conductive arm 1 to protect the moving contact 2. The moving contact anti-ice cover includes a pair of ice-breaking plates 4 distributed on both sides of the moving contact 2. The ice-breaking plates 4 are polytetrafluoroethylene plates. The ice-breaking plates 4 are rectangular plates. The two ice-breaking plates 4 switch between the first position and the second position as the moving contact 2 opens and closes.
[0028] It is defined that when the circuit breaker is closed, the horizontal direction in which the moving contact 2 and the static contact 3 are distributed is the first direction, and the horizontal direction perpendicular to the first direction is the second direction.
[0029] In the first position, the two ice-breaking plates 4 are closed together, and the moving contact 2 is covered by the cooperation of the two ice-breaking plates 4. In this position, a gap is left between the ice-breaking plates 4 and the moving contact 2 in the first direction. Figure 5 shown.
[0030] 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, and the ice-breaking plates 4 and the moving contact 2 are in contact with the static contact 3. Figure 2 shown.
[0031] The connection between the icebreaker plates 4 and the conductive arm 3 is as follows: the two icebreaker plates 4 are fixed on the conductive arm 1 by a pair of elastic connectors distributed in parallel, and each elastic connector is connected to the two icebreaker plates 4, and the two elastic connectors are distributed on the conductive arm 1 along the long axis direction of the conductive arm 1.
[0032] The elastic connecting member includes a conductive arm connecting section 41 located in the middle, deformation sections 42 connected to both sides of the conductive arm connecting section 41 , and an icebreaker plate connecting section 43 connected to the other sides of the two deformation sections 42 .
[0033] The conductive arm connecting section 41 is fixed to the conductive arm 1 by the cooperation of bolts and nuts, and the moving contact 2 is also fixed to the conductive arm 1 by the cooperation of 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 cooperation of the same set of bolts and nuts, thereby reducing the number of required fixings and making the structure simpler.
[0034] The two deformation segments 42 are distributed on both sides of the conductive arm 1 and are connected to both sides of the conductive arm connecting segment 41 in an inverted eight-shaped shape. The two icebreaker plate connecting segments 43 are formed by horizontally bending the ends of the deformation segments 42 toward the other deformation segments 42. The two icebreaker plate connecting segments 43 are connected and fixed to the two icebreaker plates 4 one by one through the cooperation of bolts and nuts. The conductive arm connecting segment 41, the deformation segment 42 and the icebreaker plate connecting segment 43 in this embodiment are integrally processed from a long strip of metal plate or metal sheet by bending, and 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 icebreaker plate 4.
[0035] The connection between the icebreaker plate 4 and the conductive arm 1 is achieved by a pair of elastic connectors, so that the icebreaker plate 4 can be stably opened or closed, and the movement is more stable. As for the design of the elastic connector, a combination of the conductive arm connecting section 41, the deformation section 42 and the icebreaker plate connecting section 43 is adopted. During the opening and closing process, the two icebreaker plates can be opened or closed by the deformation of the deformation section 42 itself, without the need to add an active driving component to realize the movement of the icebreaker plate, thereby simplifying the structure.
[0036] 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. The gap provides a basis for the subsequent deformation section 42 to be able to deform better, thereby avoiding interference due to the presence of the conductive arm 1 when the deformation section 42 is deformed, thereby affecting the ice-breaking action of the icebreaker plate 4.
[0037] The GW6B type disconnector ice-breaking device of the present invention protects the static contact 3 by adding a static contact anti-icing cover at the static contact 3. In rainy and snowy weather, freezing rain will flow down the surface of the static contact anti-icing cover and cannot condense on the surface of the static contact 3, thereby well protecting the static contact 3.
[0038] As for the moving contact 2, it is protected by an additional moving contact anti-ice cover. When in the isolated and open state, the deformation section 42 is in a relaxed state, and the two ice-breaking plates 4 on the same side are in a fitted state, so that freezing rain cannot condense on the surface of the moving contact 2; when closing the switch, the deformation section 42 opens to both sides due to the squeezing force, driving the two ice-breaking plates 4, breaking the surface ice, exposing the moving contact 2, and making the moving contact 2 complete contact with the static contact to achieve closing.
[0039] 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 GW6B type isolating switch ice breaking device, characterized in that: It includes a moving contact and a stationary contact that cooperate with each other; The static contact is mounted on a static contact seat and is located at the bottom end of the static contact seat, the moving contact is mounted on a conductive arm and is located at the side wall of the conductive arm, and the moving contact is driven by the conductive arm to approach or move away from the static contact, thereby realizing opening and closing; The static contact seat is provided with a static contact anti-icing cover for protecting the static contact, and the static contact anti-icing cover has a protection cavity covering the static contact; A moving contact anti-icing cover is provided on the side of the conductive arm to protect the moving contact, and 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; It is defined that when the circuit breaker is closed, the horizontal direction in which the moving contact and the static contact are distributed is the first direction, and the horizontal direction perpendicular to the first direction is the second direction; In the first position, the two ice-breaking plates are closed together, and the moving contact is covered by the cooperation of the two ice-breaking plates. In this position, a gap is left 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 the two ice-breaking plates are distributed on both sides of the moving contact along the second direction, and the ice-breaking plates and the moving contact are both in contact with the static contact.
2. The GW6B type isolating switch ice breaking device according to claim 1 is characterized in that: The static contact anti-icing cover is composed of four anti-icing plates obliquely distributed on the static contact seat, and the four anti-icing plates cooperate with the static contact seat to form a quadrangular prism-shaped protection cavity with a lower side opening, and the size of the upper bottom of the protection cavity is smaller than the size of the lower bottom of the protection cavity.
3. The GW6B type isolating switch ice breaking device according to claim 2 is characterized in that: The bottom end of the anti-icing plate is also connected to an inclined growth plate, which is inclined and has the same inclination direction as the corresponding 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 is characterized in that: The connection between the ice-breaking plates and the conductive arm is as follows: the two ice-breaking plates are fixed on the conductive arm through the cooperation of a pair of elastic connectors distributed in parallel, and each elastic connector is connected to the two ice-breaking plates; The elastic connecting member includes a conductive arm connecting section located in the middle, a deformation section connected to both sides of the conductive arm connecting section, and an icebreaker plate connecting section connected to the other side of the two deformation sections, wherein the conductive arm connecting section is fixed to the conductive arm by the cooperation of bolts and nuts, the two deformation 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 figure eight shape, the two icebreaker plate connecting sections are respectively formed by horizontally bending the ends of the deformation sections toward the other deformation sections, and the icebreaker plate connecting section is fixed to the icebreaker plate by the cooperation of bolts and nuts.
5. The GW6B type disconnector ice breaking device according to claim 4 is characterized in that: The conductive arm connecting section and the moving contact are fixed on the conductive arm by the cooperation of the same set of bolts and nuts.
6. The GW6B type disconnector ice breaking device according to claim 4 is characterized in that: Pads are also provided on the conductive arm connecting section and the conductive arm.
7. The GW6B type disconnector ice breaking device according to claim 1 is characterized in that: The ice-breaking plate is a polytetrafluoroethylene plate.