Automatic wiring device for ground wire ice melting

Abstract

The utility model belongs to the technical field of ice melting devices for overhead transmission lines, and particularly relates to an automatic wiring device for ground wire ice melting. The utility model aims to provide an automatic wiring device for ground wire ice melting, which aims at solving the problems in the prior art and comprises a movable contact assembly, a static contact assembly, a rotary motion assembly, a rotary motion rod, an insulation connecting piece and an insulation cable, one end of the rotary motion rod is connected with the rotary motion assembly, and the other end is connected with the movable contact assembly through an insulating connecting piece; the insulated cable is electrically connected with a contact finger of the movable contact assembly; and the rotary motion assembly drives the movable contact assembly to be clamped with or separated from the static contact assembly. According to the utility model, the movable contact assembly and the rotary motion rod are subjected to voltage isolation through the insulating connecting piece, and the insulating cable passes through the middle, so that the insulation of ice-melting voltage is realized, the overall structure of the device is simplified, and ice-melting current can be safely introduced into a ground wire.

Description

Technical Field

[0001] The utility model relates to an automatic ground wire ice-melting connection device, belonging to the technical field of ice-melting devices for overhead power transmission lines. Background Art

[0002] High-voltage transmission lines usually refer to transmission lines that transmit voltages above 110kV. In cities, high-voltage transmission generally uses cables with insulation layers for underground transmission, and in the wild, it is often transmitted by overhead lines carried by towers. Transmission lines under extreme climatic conditions, especially those in some high-altitude and cold mountainous areas in my country, are often severely covered with ice in winter. The longitudinal unbalanced tension caused by uneven ice coverage on the transmission conductors and ground wires will cause the tower to tilt or bend to the side with greater tension. When the design bearing capacity is exceeded, the transmission conductors and ground wires will break, the hardware will fall off, and in severe cases, the tower will collapse. In addition, since the overhead ground wire on the tower cannot resist partial freezing through the heat energy generated by the load current like the transmission wire, the thickness of its ice coverage is generally much greater than that of the transmission wire. At present, the power grid company achieves ice melting of the incoming and outgoing wires by installing DC ice melting devices in hub substations. However, since the ground wire itself does not pass current and cannot resist freezing through the heat energy generated by its own load current, it is more likely to be covered with ice on the surface. Therefore, it is necessary to use wiring to lead the ice-melting current from the conductor to the ground wire, and use the thermal effect of the current to achieve the purpose of ice melting. However, the current ground wire ice-melting device is mainly mechanical rotary, with complex structure, large size, high cost, low closing accuracy, certain operating risks, and great difficulty in operation and maintenance. Utility Model Content

[0003] The utility model aims to provide a ground wire ice-melting automatic wiring device to solve the problems existing in the prior art.

[0004] The utility model provides a technical solution to solve the above technical problems: a ground wire ice melting automatic wiring device, including a moving contact assembly, a static contact assembly, a rotary motion assembly, a rotary motion rod, an insulating connector, and an insulating cable;

[0005] One end of the rotary motion rod is connected to the rotary motion assembly, and the other end is connected to the moving contact assembly through an insulating connector. The insulating connector isolates the moving contact assembly from the rotary motion rod in voltage, thereby achieving insulation between the moving contact assembly and the rotary motion rod; the insulating cable is electrically connected to the contact finger of the moving contact assembly;

[0006] The rotary motion component drives the moving contact component to engage or separate with the static contact component.

[0007] An insulating connector is used to isolate the voltage between the moving contact assembly and the rotating movement rod, and an insulating cable passes through the middle of the insulating connector, which not only realizes the front-end insulation of the ice-melting voltage, but also can safely introduce the ice-melting current into the ground wire.

[0008] A further technical solution is that the device also includes a translation correction assembly fixed on the crossarm of the iron tower, the translation correction assembly includes a translation correction plate, a driving connection and a motor installed on the translation correction plate; guide rails are provided on both sides of the translation correction plate, and both ends of the driving connection are slidably installed in the two guide rails; two bearings are provided on the translation correction plate, and a screw rod is provided on the driving connection, and both ends of the screw rod are installed in two bearings, the motor is connected to one end of the screw rod, driving the driving connection to slide in the guide rail, and the rotational motion assembly is fixed on the driving connection.

[0009] A further technical solution is that the rotary motion component includes a reducer and a rotary motor connected to the reducer, the drive connector is connected to the reducer, a rotary steering seat is provided on the output shaft of the reducer, and the rotary steering seat is connected to the rotary motion rod.

[0010] A further technical solution is that the device also includes a moving contact protection cover fixed on the cross arm of the iron tower, and the moving contact protection cover is used to protect the moving contact assembly in the storage position.

[0011] A further technical solution is that a support pillow is provided in the moving contact protection cover.

[0012] A further technical solution is that the insulating connector is a hollow insulating rod, the rotating movement rod is a hollow rod, and the insulating cable passes through the hollow rod and the hollow insulating rod in sequence.

[0013] A further technical solution is that the static contact assembly includes a static contact copper tube, a static contact base plate, a jumper string connection plate, and a wire removal clamp. The static contact copper tube and the jumper string connection plate are respectively fixed on both sides of the static contact base plate. A connecting terminal is provided at the lower end of the static contact copper tube. One end of the wire removal clamp is fixed on the wire, and the other end is fixed on the connecting terminal below the static contact copper tube; the static contact copper tube is engaged or separated with the contact finger of the moving contact assembly.

[0014] A further technical solution is that a static contact protection cover is provided on the static contact base plate for protecting the static contact copper tube from being covered by ice and snow in an ice and snow environment.

[0015] A further technical solution is that a voltage-equalizing shielding ring is provided on the static contact protection cover.

[0016] The utility model has the following beneficial effects: the utility model isolates the voltage of the moving contact assembly and the rotating movement rod through the insulating connector, and arranges the insulating cable to pass through the middle, which not only realizes the insulation of the ice-melting voltage and simplifies the overall structure of the device, but also can safely introduce the ice-melting current into the ground wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is a structural schematic diagram of a moving contact assembly;

[0019] Figure 3 is a structural schematic diagram of a static contact assembly;

[0020] Figure 4 It is a schematic diagram of another embodiment of a stationary contact assembly;

[0021] Figure 5 It is a structural schematic diagram of the moving contact shield;

[0022] Figure 6 It is a structural schematic diagram of a rotating motion component;

[0023] Figure 7 is a structural schematic diagram of a translation correction component;

[0024] Figure 8 A three-dimensional diagram of an embodiment of an insulating connector;

[0025] Fig. 9 The present invention is a front view of an insulating connector according to one embodiment.

[0026] As shown in the figure: 1-static contact assembly; 11-static contact copper tube; 12-static contact seat plate; 13-jumper string connection plate; 14-connection terminal; 15-static contact protection cover; 16-voltage equalizing shielding ring; 2-moving contact assembly; 3-moving contact protection cover; 4-rotating motion rod; 5-translation correction assembly; 51-translation correction plate; 52-driving connector; 53-motor; 54-guide rail; 55-bearing; 56-screw; 6-insulated cable; 7-rotating motion assembly; 71-reducer; 72-rotating motor; 73-rotating steering seat; 8-tower crossarm; 9-insulating connector. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figure 1-Figure 7 As shown, the utility model provides an automatic ground wire ice melting wiring device, comprising a moving contact assembly 2, a static contact assembly 1 installed on a line jumper series board, a rotary motion assembly 7 installed on a tower cross arm 8, a rotary motion rod 4, an insulating connector 9, and an insulating cable 6;

[0032] The static contact assembly 1 is connected to the jumper string, and can use the power transmission line to provide the voltage and current required for ice melting;

[0033] One end of the rotary motion rod 4 is connected to the rotary motion component 7, and the other end is connected to the moving contact component 2 through the insulating connector 9; one end of the insulating cable 6 is electrically connected to the contact finger of the moving contact component 2, and the other end is connected to the ground wire or the ground wire knife switch; the rotary motion component 7 drives the rotary motion rod 4 to rotate up and down, so the rotary motion rod 4 that rotates up and down drives the moving contact component 2 and the static contact component 1 to achieve engagement or separation, thereby achieving the closing and opening action of the ground wire and the conductor, and after closing, the ice-melting current on the conductor can be led to the ground wire through the insulating cable to perform the ice-melting action of the ground wire;

[0034] In the utility model, the voltage of the moving contact assembly 2 and the rotating movement rod 4 is isolated by the insulating connector 9, so that the front end insulation is realized.

[0035] In this embodiment, the insulating connector 9 can be a hollow insulator, or it can include two connecting discs and multiple insulators arranged between the two connecting discs, and the multiple insulators are distributed in a circle; the specific implementation scheme of the insulating connector 9 is not limited to the above two structures, and the schemes that can achieve the insulating connection function are still within the scope of protection of the technical scheme of the utility model.

[0036] like Figure 1 As shown, in this embodiment, in order to avoid the static contact from shifting in position due to uneven ice covering, which results in the inability to accurately close the moving and static contacts, a preferred implementation is that the device also includes a translation correction component 5 installed on the tower crossarm 8, and the rotational motion component 7 is connected to the translation correction component 5, and the translation correction component 5 can drive the rotational motion component 7 to achieve horizontal translation, thereby correcting the lateral position of the moving contact component 2.

[0037] like Figure 7 As shown, in this embodiment, the translation correction assembly 5 includes a translation correction plate 51, a driving connection member 52 and a motor 53 installed on the translation correction plate 51; guide rails 54 are provided on both sides of the translation correction plate 51, and the two ends of the driving connection member 52 are slidably installed in the two guide rails 54; the translation correction plate 51 is provided with two bearings 55, and the driving connection member 52 is provided with a screw rod 56, and the two ends of the screw rod 56 are installed in the two bearings 55. The motor 53 is connected to one end of the screw rod 56 to drive the driving connection member 52 to slide in the guide rail 54. The driving connection member 53 is fixedly installed on the rotational motion component 4, so that when the driving connection member 52 moves, it can drive the rotational motion component 4 to translate.

[0038] like Figure 6 As shown, in this embodiment, the rotary motion component 7 includes a reducer 71 and a rotary motor 72 connected to the reducer 71, the drive connecting member 52 is connected to the reducer 71, and a rotary steering seat 73 is provided on the output shaft of the reducer 71, and the rotary steering seat 73 is connected to the rotary motion rod 4.

[0039] like Figure 1 As shown, in the present embodiment, the device further comprises a moving contact protection cover 3 fixed on the tower cross arm 8, and the moving contact protection cover 3 is used to protect the moving contact assembly 2 in the storage position, so that when the moving contact assembly 2 rotates to the uppermost position, it is in the moving contact protection cover 3, thereby preventing the moving contact assembly 2 from being covered by ice and snow in an icy and snowy environment; at the same time, a supporting pillow is provided in the moving contact protection cover 2, and when the device is opened and stopped using, the movable moving contact assembly 2 can be placed on the supporting pillow in the moving contact protection cover 2, thereby preventing the rotating movement rod 4 from acting as a cantilever beam force-bearing structure for a long time.

[0040] In this embodiment, in order to simplify the structure, the preferred implementation is that the insulating connector 9 is a hollow insulating rod, the rotating movement rod 4 is a hollow rod, and the insulating cable 6 passes through the hollow rod and the hollow insulating rod in sequence, thereby simplifying the overall structure of the device and safely introducing the ice-melting current into the ground wire.

[0041] like Figure 3 and Figure 4 As shown, the static contact assembly 1 includes a static contact copper tube 11, a static contact base plate 12, a jumper string connecting plate 13, and a wire taking clamp. The static contact copper tube 11 and the jumper string connecting plate 13 are respectively fixed on both sides of the static contact base plate 12. A connecting terminal 14 is provided at the lower end of the static contact copper tube 13. One end of the wire taking clamp is fixed on the wire, and the other end is fixed on the connecting terminal 14 under the static contact copper tube, and is used to lead the ice-melting current on the jumper to the static contact copper tube 11; the static contact copper tube 11 is engaged or separated with the contact finger of the moving contact assembly 2.

[0042] In this embodiment, a static contact protection cover 15 is provided on the static contact seat plate 12 for protecting the static contact copper tube 11 from being covered with ice and snow in an ice and snow environment, and a voltage equalizing shielding ring 16 is provided on the static contact protection cover 15; the voltage equalizing shielding ring 16 is used to solve the corona problem on the static contact assembly when the line is operating normally.

[0043] The above description does not impose any form of limitation on the present invention. Although the present invention has been disclosed through the above embodiments, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification 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 still fall within the scope of the technical solution of the present invention.

Claims

1. A ground wire ice melting automatic wiring device, characterized in that: It includes a moving contact assembly, a stationary contact assembly, a rotary motion assembly, a rotary motion rod, an insulating connector, and an insulating cable; One end of the rotary motion rod is connected to the rotary motion assembly, and the other end is connected to the moving contact assembly through an insulating connector. The insulating connector isolates the moving contact assembly from the rotary motion rod in voltage, thereby achieving insulation between the moving contact assembly and the rotary motion rod; the insulating cable is electrically connected to the contact finger of the moving contact assembly; The rotating motion component drives the moving contact component to engage or separate with the static contact component; The device also includes a translation correction component fixed on the cross arm of the iron tower, the translation correction component includes a translation correction plate, a driving connection and a motor installed on the translation correction plate; guide rails are provided on both sides of the translation correction plate, and both ends of the driving connection are slidably installed in the two guide rails; two bearings are provided on the translation correction plate, a screw rod is provided on the driving connection, and both ends of the screw rod are installed in two bearings, the motor is connected to one end of the screw rod, driving the driving connection to slide in the guide rail, and the rotation motion component is fixed on the driving connection.

2. The ground wire ice melting automatic wiring device according to claim 1, characterized in that: An insulating connector is used to isolate the voltage between the moving contact assembly and the rotating movement rod, and an insulating cable passes through the middle of the insulating connector, which not only realizes the front-end insulation of the ice-melting voltage, but also can safely introduce the ice-melting current into the ground wire.

3. The ground wire ice melting automatic wiring device according to claim 1, characterized in that: The rotary motion assembly includes a reducer and a rotary motor connected to the reducer, the drive connector is connected to the reducer, a rotary steering seat is provided on the output shaft of the reducer, and the rotary steering seat is connected to the rotary motion rod.

4. A ground wire ice melting automatic wiring device according to claim 1 or 3, characterized in that: The device also includes a moving contact protection cover fixed on the cross arm of the iron tower, and the moving contact protection cover is used to protect the moving contact assembly in the storage position.

5. The ground wire ice melting automatic wiring device according to claim 4, characterized in that: A supporting pillow is arranged in the moving contact protection cover.

6. The ground wire ice melting automatic wiring device according to claim 1, characterized in that: The insulating connector is a hollow insulating rod, the rotating movement rod is a hollow rod, and the insulating cable passes through the hollow rod and the hollow insulating rod in sequence.

7. The ground wire ice melting automatic wiring device according to claim 1, characterized in that: The static contact assembly includes a static contact copper tube, a static contact base plate, a jumper string connection plate, and a wire removal clamp. The static contact copper tube and the jumper string connection plate are respectively fixed on both sides of the static contact base plate. A connecting terminal is provided at the lower end of the static contact copper tube. One end of the wire removal clamp is fixed on the wire, and the other end is fixed on the connecting terminal below the static contact copper tube; the static contact copper tube is engaged or separated with the contact finger of the moving contact assembly.

8. The ground wire ice melting automatic wiring device according to claim 7, characterized in that: The static contact seat plate is provided with a static contact protection cover for protecting the static contact copper tube from being covered by ice and snow in an ice and snow environment.

Images