An enclosed ground ice-melting switch device

Abstract

The utility model relates to a closed ground wire ice melting switch device relates to line ice melting technical field, solves the problem that the structure of existing ground switch can not realize the selection and automatic lap joint between different ground wires, including shell and primary assembly, and the primary assembly includes vertical open isolation switch, and the vertical open isolation switch includes movable contact plate, first static contact connected with first ground wire, second static contact connected with second ground wire and third static contact connected with third ground wire, the first end of movable contact plate keeps contact with first static contact all the time, the second end of movable contact plate contacts with second static contact and realizes the lap joint of first ground wire and second ground wire, and the second end of movable contact plate contacts with third static contact and realizes the lap joint of first ground wire and third ground wire, through double position static contact design, realized the selection and automatic lap joint between different ground wires, overcame the problem that the ice melting demand under the ice melting demand under the complex ground wire layout of prior art can not be satisfied.

Description

Technical Field

[0001] This utility model relates to the field of circuit de-icing technology, specifically a closed-type ground wire de-icing switch device. Background Technology

[0002] In recent years, southern my country has frequently experienced icing disasters under extreme weather conditions. Severe icing on power transmission lines has led to excessive loads on towers, jumping of ground wires and conductors, and even tower collapses. Icing on transmission lines not only affects their normal operation but also causes frequent freezing disasters to the power system, resulting in significant economic losses for the country. Unlike conductors, overhead ground wires, because they do not carry current, cannot resist freezing through their own heat, making them more susceptible to icing.

[0003] Currently, ground wire de-icing mainly employs the DC de-icing method. This involves short-circuiting the conductor and ground wire, then applying DC current from the conductor end of the substation to heat the ground wire and melt the ice and snow covering it. However, existing grounding switches for ground wire de-icing still require manual operation by climbing the tower, which not only wastes time and poses safety hazards but also reduces the efficiency of ground wire de-icing. Furthermore, existing grounding switch structures often cannot achieve selection and automatic connection between different ground wires, making it difficult to meet the de-icing needs of complex ground wire layouts. Utility Model Content

[0004] The purpose of this utility model is to provide a closed-type grounding wire de-icing switch device to solve the problem that the existing grounding switch structure cannot achieve the selection and automatic connection between different grounding wires, and is difficult to meet the de-icing needs under complex grounding wire layouts.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A closed-type ground wire de-icing switch device includes a housing and a primary component located inside the housing. The primary component includes a vertically opening disconnect switch. The vertically opening disconnect switch includes a moving contact plate, a first stationary contact connected to a first ground wire, a second stationary contact connected to a second ground wire, and a third stationary contact connected to a third ground wire. The first end of the moving contact plate is always in contact with the first stationary contact. When the second end of the moving contact plate contacts the second stationary contact, the first ground wire and the second ground wire are connected. When the second end of the moving contact plate contacts the third stationary contact, the first ground wire and the third ground wire are connected.

[0006] Furthermore, the first ground wire is connected to the first stationary contact, the second ground wire is connected to the second stationary contact, and the third ground wire is connected to the third stationary contact via high-voltage cables.

[0007] Furthermore, the vertically opening disconnect switch also includes a motor and a reducer and a main shaft. The motor and reducer are fixed on the main body of the vertically opening disconnect switch. The main shaft is fixed to the output end of the motor and reducer and is rotatably connected to the main body of the vertically opening disconnect switch. A crank arm is fixed on the main shaft. The crank arm is connected to the moving contact plate through an operating insulator. When the crank arm rotates, it pushes and pulls the moving contact plate through the operating insulator, causing the moving contact plate to swing.

[0008] Furthermore, it also includes a vertical link, the first end of which has a gear commutator between it and the main shaft. The rotational motion of the main shaft in the vertical plane is converted into the rotational motion of the vertical link in the horizontal plane by the gear commutator. The second end of the vertical link has a pointer for indicating the grounding status.

[0009] Furthermore, it also includes a secondary component, which includes a controller that is signal-connected to the motor and reducer, and the controller sends signals to the motor and reducer to change the operating state of the motor and reducer.

[0010] Furthermore, the housing has a hand-cranked window, through which a crank handle is inserted to crank the rotation of the main shaft, thereby realizing the conversion of the second ground wire to the first ground wire or the third ground wire to the first ground wire.

[0011] Furthermore, the gear commutator includes a driving bevel gear fixedly connected to the main shaft and a driven bevel gear fixedly connected to the vertical connecting rod, wherein the driving bevel gear meshes with the driven bevel gear.

[0012] The beneficial effects of this utility model are: through the dual-station static contact design, this utility model realizes the selection and automatic connection between different ground wires, overcomes the problem that the existing technology cannot meet the de-icing requirements under complex ground wire layouts, significantly shortens the downtime of the line during the ground wire de-icing operation, and improves the working efficiency of ground wire de-icing. Attached Figure Description

[0013] Figure 1 This is one of the three-dimensional views of this utility model;

[0014] Figure 2 This is the second three-dimensional view of the present invention;

[0015] Figure 3 This is one of the front view diagrams of the internal disconnect switch of this utility model;

[0016] Figure 4 This is the second front view of the internal disconnect switch of this utility model;

[0017] Figure 5 This is an internal bottom view of the present invention;

[0018] Figure 6 This is one of the three-dimensional diagrams of the internal structure of this utility model;

[0019] Figure 7 This is the second three-dimensional view of the internal structure of this utility model;

[0020] In the diagram: 1. Housing; 11. First ground wire inlet hole; 12. Second ground wire inlet hole; 13. Third ground wire inlet hole; 14. Hand crank window; 2. First ground wire; 3. Second ground wire; 4. Third ground wire; 5. First stationary contact; 6. Second stationary contact; 7. Third stationary contact; 8. Moving contact plate; 9. Vertical connecting rod; 10. Pointer; 15. Motor and reducer; 16. Main shaft; 17. Crank arm; 18. Gear commutator; 19. Operating insulator; 20. Support insulator. Detailed Implementation

[0021] like Figures 1 to 7 As shown in the figure, this utility model includes a housing 1, a primary component, a secondary component, and a high-voltage cable. The structure and working principle of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] like Figures 1 to 7 As shown, a closed-type grounding de-icing switch device includes a housing 1 and a primary component located within the housing 1. The housing 1 is made of 1.5mm galvanized steel plate with a powder-coated surface, providing good sealing and corrosion resistance. The housing 1 is fixed to the main inclined member of the tower body. The primary component includes a vertically opening disconnect switch with a rated voltage of 40.5kV and a rated current of 1250A. The vertically opening disconnect switch is a side-mounted single-pole structure, which is existing technology. The vertically opening disconnect switch includes a moving contact plate 8, a first stationary contact 5 connected to a first ground wire 2, a second stationary contact 6 connected to a second ground wire 3, and a third stationary contact 7 connected to a third ground wire 4. The connection between each ground wire and the stationary contact is electrical. The first end of the moving contact plate 8 always maintains contact with the first stationary contact 5, such as... Figure 3 As shown, when the second end of the moving contact plate 8 contacts the second stationary contact 6, the first ground wire 2 and the second ground wire 3 are connected, as follows: Figure 4 As shown, when the second end of the moving contact plate 8 contacts the third stationary contact 7, the first ground wire 2 and the third ground wire 4 are connected, thus realizing the dual-station stationary contact design. The first end of the moving contact plate 8 is hinged to the first stationary contact 5. When the moving contact plate 8 is driven to swing relative to the first stationary contact 5, the second end of the moving contact plate 8 moves between the second stationary contact 6 and the third stationary contact 7, thus realizing the change of the ground wire connection state.

[0023] For ease of assembly, such as Figure 2As shown, a first ground wire connection hole 11, a second ground wire connection hole 12, and a third ground wire connection hole 13 are provided on the side wall of the housing 1. The first ground wire 2 passes through the first ground wire connection hole 11 and extends into the housing 1 by a section. The second ground wire 3 passes through the second ground wire connection hole 12 and extends into the housing 1 by a section. The third ground wire 4 passes through the third ground wire connection hole 13 and extends into the housing 1 by a section.

[0024] The first ground wire 2 is connected to the first stationary contact 5, the second ground wire 3 to the second stationary contact 6, and the third ground wire 4 to the third stationary contact 7 via high-voltage cables. Cable terminals are fitted at both ends of the high-voltage cables to ensure sufficient insulation distance. The high-voltage cables are made of high-temperature resistant materials and can maintain stable operation under extreme climatic conditions. Adjustable clamps are provided between each ground wire and the high-voltage cable to ensure reliable wiring. Supporting insulators 20 are provided between the first stationary contact 5 and the body of the vertically opening disconnector, the second stationary contact 6 and the body of the vertically opening disconnector, and the third stationary contact 7 and the body of the vertically opening disconnector; the use of supporting insulators 20 is existing technology.

[0025] The vertically opening disconnect switch also includes a motor and reducer 15 and a main shaft 16, such as Figure 6 , Figure 7 As shown, the motor and reducer 15 are fixed to the main body of the vertically opening disconnector. The main shaft 16 is fixed to the output end of the motor and reducer 15 and rotatably connected to the main body of the vertically opening disconnector. A crank arm 17 is fixed on the main shaft 16, and the crank arm 17 is connected to the moving contact plate 8 through an operating insulator 19. When the crank arm 17 rotates, it pushes and pulls the moving contact plate 8 through the operating insulator 19, causing the moving contact plate 8 to swing. Figure 5 As shown, it also includes a vertical link 9, such as Figure 7 As shown, a gear reversing device 18 is located between the first end of the vertical connecting rod 9 and the end of the main shaft 16. The gear reversing device 18 includes a housing, a driving bevel gear fixedly connected to the main shaft 16, and a driven bevel gear fixedly connected to the first end of the vertical connecting rod 9. The driving bevel gear meshes with the driven bevel gear, and both are located inside the housing. The housing is fixedly connected to the main body of the vertically opening disconnect switch. The rotational motion of the main shaft 16 is transmitted to the vertical connecting rod 9 through the gear reversing device 18. The second end of the vertical connecting rod 9 has a pointer 10 for indicating the grounding status. The gear reversing device 18 has a transmission function, that is, it transmits the rotational motion of the main shaft 16 to the vertical connecting rod 9; the gear reversing device 18 also has a reversing function, that is, it converts the rotational motion of the main shaft 16 in the vertical plane into the rotational motion of the vertical connecting rod 9 in the horizontal plane through the gear reversing device 18. The operator under the tower can determine the ground connection status of the housing 1 by observing the pointer 10.

[0026] For ease of control, secondary components are also included. These include a controller connected to the motor and reducer 15 via signals. The controller sends signals to the motor and reducer 15 to change their operating states. In case of controller failure, additional measures are provided to handle unexpected situations, such as... Figure 1 As shown, the housing 1 has a hand-cranked window 14. By inserting a crank handle through the hand-cranked window, the main shaft 16 is rotated, thereby switching the connection between the second ground wire 3 and the first ground wire 2 or the third ground wire 4 and the first ground wire 2. By remotely sending a signal to the controller, the controller sends instructions to the motor and reducer 15 to change the working state of the motor and reducer 15, thereby driving the movable contact plate 8 to swing, and thus realizing the connection switching between different ground wires through remote control.

[0027] This invention utilizes a dual-station static contact design to achieve the selection and automatic connection between different ground wires, overcoming the problem of existing technologies being unable to meet the de-icing requirements of complex ground wire layouts. This significantly shortens line downtime during ground wire de-icing operations and improves work efficiency. A closed housing integrates a single-pole vertically opening isolating switch and high-voltage cable. A controller sends signals to the motor and reducer to switch between different ground wire connections, avoiding the safety hazards of manual operation by climbing the tower as required by traditional grounding switches, effectively ensuring the safety of personnel involved in ground wire de-icing. The direct-drive spindle transmission method of the motor and reducer improves the transmission structure of traditional isolating switches, increasing transmission efficiency and stability. The vertical connecting rod 9 and pointer 10 facilitate accurate identification of wiring status by operators below the tower, enabling intelligent monitoring and control, and improving operational efficiency and reliability. The use of high-voltage cables connecting the ground wires to the vertically opening isolating switch, along with the high-voltage cable terminal insulation design, enhances overall safety and protection, effectively coping with extreme ice and snow conditions and ensuring the safe operation of transmission lines.

Claims

1. A closed-type grounding de-icing switch device, characterized in that, The device includes a housing and a primary component located within the housing. The primary component includes a vertically opening disconnect switch. The vertically opening disconnect switch includes a moving contact plate, a first stationary contact connected to a first ground wire, a second stationary contact connected to a second ground wire, and a third stationary contact connected to a third ground wire. The first end of the moving contact plate is always in contact with the first stationary contact. When the second end of the moving contact plate contacts the second stationary contact, the first ground wire and the second ground wire are connected. When the second end of the moving contact plate contacts the third stationary contact, the first ground wire and the third ground wire are connected.

2. The enclosed grounding de-icing switch device according to claim 1, characterized in that, The first ground wire is connected to the first stationary contact, the second ground wire is connected to the second stationary contact, and the third ground wire is connected to the third stationary contact via high-voltage cables.

3. The enclosed grounding de-icing switch device according to claim 2, characterized in that, The vertically opening disconnect switch also includes a motor, a reducer, and a main shaft. The motor and reducer are fixed on the main body of the vertically opening disconnect switch. The main shaft is fixed to the output end of the motor and reducer and is rotatably connected to the main body of the vertically opening disconnect switch. A crank arm is fixed on the main shaft. The crank arm is connected to the moving contact plate through an operating insulator. When the crank arm rotates, it pushes and pulls the moving contact plate through the operating insulator, causing the moving contact plate to swing.

4. The enclosed grounding de-icing switch device according to claim 3, characterized in that, It also includes a vertical link, the first end of which has a gear commutator between it and the main shaft. The rotational motion of the main shaft in the vertical plane is converted into the rotational motion of the vertical link in the horizontal plane by the gear commutator. The second end of the vertical link has a pointer for indicating the grounding status.

5. A closed-type grounding de-icing switch device according to claim 4, characterized in that, It also includes a secondary component, which includes a controller that is signal-connected to the motor and reducer, and the controller sends signals to the motor and reducer to change the operating state of the motor and reducer.

6. The enclosed grounding de-icing switch device according to claim 5, characterized in that, The housing has a hand crank window. By inserting a crank handle through the hand crank window, the main shaft is rotated, thereby realizing the conversion between the second ground wire and the first ground wire or the third ground wire and the first ground wire.

7. A closed-type grounding de-icing switch device according to claim 6, characterized in that, The gear commutator includes a driving bevel gear fixedly connected to the main shaft and a driven bevel gear fixedly connected to the vertical connecting rod, wherein the driving bevel gear meshes with the driven bevel gear.

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