Extra-high voltage grounding device

Abstract

The utility model discloses an extra-high voltage grounding device, and relates to the technical field of grounding devices, the extra-high voltage grounding device comprises a grounding plate, a grounding end, a grounding wire clamp and a driving mechanism, one end of the grounding end is connected with the grounding plate, and the other end of the grounding end is connected with a high voltage line tower; the plurality of grounding wire clamps are arranged on the end surface of the grounding plate, and in an initial state, the grounding wire clamps are closed and are used for clamping and connecting the sub-conductors; the driving mechanism is fixedly connected with the plurality of grounding wire clamps, and the driving mechanism is used for driving the grounding wire clamps to be in an open state to clamp and connect the sub-conductors. According to the extra-high voltage grounding device, the grounding end is firmly fastened on the tower body through the universal grounding terminal, the other end is connected with the grounding plate through the grounding wire, and the extra-high voltage grounding device can be rapidly and conveniently installed near all paying-off tackles; and then all the grounding wire clamps are driven by the arranged driving mechanism to be opened at the same time to clamp and connect the sub-conductors, so that the problem of reliable grounding of a method for releasing all the sub-conductors during the pay-off period is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of grounding devices, in particular to an ultra-high voltage grounding device. Background Art

[0002] Due to the long lines, numerous spans, and high tower heights of UHV projects, they are more susceptible to lightning strikes. Therefore, during the ground wire deployment process, the tensiometers and grounding pulleys at the traction machine conductor outlets must be properly installed and securely secured to protect the safety of construction workers. After the ground wire deployment is completed, it must remain stationary for no more than five days before the wire tensioning and accessory installation can begin. This allows the initial elongation of the ground wire to be released and prepares for sag measurements. During this period, the ground wires in the tensioning field are typically temporarily anchored to the ground, while the remaining tower ground wires are contained within the payout pulley. To prevent damage to the conductors during payout, the pulleys on UHV projects are typically constructed of MC nylon wheels, which are similar to insulating materials. Therefore, except for the ground wires on both sides, which are temporarily anchored to the ground, the remaining intermediate payout sections are not securely grounded, creating a safety hazard for workers who subsequently perform payout operations and could experience electric shock if they come into contact with the ground wires.

[0003] The temporary anchor conductors in the two-field tensioning should be equipped with dedicated grounding wires. However, in practice, this is not always possible. Reliable grounding of each conductor using dedicated grounding wires is also difficult. Reliable grounding of the intermediate laying-out section requires numerous grounding wires for each sub-conductor, increasing construction costs and delaying work. Therefore, to address this issue, the present invention proposes a UHV grounding device. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an ultra-high voltage grounding device.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A UHV grounding device comprises: a grounding plate; a grounding terminal, one end of which is connected to the grounding plate, and the other end of which is used to connect to a high-voltage line tower; a grounding clamp, a plurality of which are provided and installed on the end surface of the grounding plate, wherein in an initial state, the grounding clamp is closed and is used to clamp a connecting sub-conductor; and a driving mechanism, wherein the driving mechanism is fixedly connected to the plurality of grounding clamps and is used to drive the grounding clamp to an open state to clamp the connecting sub-conductor.

[0007] The middle portion of the grounding plate is hollowed out.

[0008] The grounding end includes: a grounding terminal, which is used to connect to a high-voltage line tower; a grounding wire, one end of which is fixedly connected to the grounding terminal, and the other end of which is fixedly connected to the grounding plate.

[0009] The grounding clamp comprises a first clamping body and a second clamping body. The middle parts of the first clamping body and the second clamping body are rotatably connected via a rotating shaft, and a torsion spring is sleeved on the rotating shaft.

[0010] The first clamp and the second clamp each include a clamping portion and a pressing portion, the clamping portion and the pressing portion are integrally formed, the pressing portion of the first clamp is fixedly connected to a fixing rod, and the first clamp is fixedly connected to the grounding plate via the fixing rod.

[0011] There are two driving mechanisms, and the grounding wire clamps are arranged in an even number. Half of the grounding wire clamps are fixedly connected to one of the driving mechanisms, and the other half of the grounding wire clamps are electrically connected to the other driving mechanism. The two driving mechanisms are symmetrically distributed. The driving mechanism includes: a connecting rod, one end of the connecting rod is fixedly connected to the pressing part of the second clamp body; a driving rod, the driving rod is T-shaped or L-shaped, and the other end of the connecting rod is fixedly connected to the driving rod.

[0012] A handle is provided on the driving rod.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses an ultra-high voltage grounding device. The grounding end is firmly fastened to the tower body with a universal grounding terminal, and the other end is connected to the grounding plate with a grounding wire. It can be quickly and conveniently installed near all line-laying pulleys. By installing multiple grounding clamps on the grounding plate, all the grounding clamps are driven to open simultaneously by a set driving mechanism to clamp the connected sub-conductors, thereby solving the problem of reliable grounding of all sub-conductors during line laying. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the UHV grounding device according to an embodiment of the present utility model;

[0016] Figure 2 This is a structural diagram of an ultra-high voltage grounding device according to an embodiment of the present invention;

[0017] Figure 3 This is a plan view of a UHV grounding device with an L-shaped driving rod according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the connection between the driving mechanism and the grounding clamp of one embodiment of the utility model;

[0019] Figure 5 This is a plan view of an ultra-high voltage grounding device with a T-shaped driving rod according to an embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1-grounding plate; 2-grounding wire clamp; 3-grounding terminal; 4-driving mechanism; 5-grounding terminal; 6-grounding wire; 7-first clamping body; 8-second clamping body; 9-clamping part; 10-pressing part; 11-fixing rod; 12-connecting rod; 13-driving rod; 14-handle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1-Figure 5 As shown, an ultra-high voltage grounding device of an embodiment of the utility model may include a grounding plate 1, a grounding terminal 3, a grounding wire clamp 2 and a driving mechanism 4, wherein one end of the grounding terminal 3 is connected to the grounding plate 1, and the other end of the grounding terminal 3 is used to connect to the high-voltage line tower; there are multiple grounding wire clamps 2, which are installed on the end face of the grounding plate 1, and in the initial state, the grounding wire clamps 2 are closed, and the grounding wire clamps 2 are used to clamp the connecting sub-conductors; the driving mechanism 4 is fixedly connected to the multiple grounding wire clamps 2, and the driving mechanism 4 is used to drive the grounding wire clamps 2 to the open state to clamp the connecting sub-conductors.

[0024] In one embodiment of the present invention, the middle portion of the grounding plate 1 is hollowed out, and the grounding plate 1 is made of metal. For example, the grounding plate 1 is made of steel or iron. The hollowing out of the grounding plate 1 can reduce its weight and facilitate carrying.

[0025] In one embodiment of the present invention, the grounding terminal 3 may include a grounding terminal 3 and a grounding wire 6, wherein the grounding terminal 5 is used to connect a high-voltage line tower. Specifically, the terminal block 5 is a prior art product, which includes a clamping seat, which has a U-shaped structure, a screw threadedly connected to the clamping seat, a rotating rod fixedly connected to the screw, the screw is located inside the clamping seat and is rotatably connected to an extrusion block, and the extrusion block slides along the inner wall of the clamping seat; one end of the grounding wire 6 is fixedly connected to the grounding terminal 5, and the other end of the grounding wire 6 is fixedly connected to the grounding plate 1, wherein the grounding wire 6 is made of soft copper wire with a specification of 25mm 2 , the outer set has a transparent protective cover.

[0026] In one embodiment of the present invention, the grounding wire clamp 2 includes a first clamp body 7 and a second clamp body 8. The middle parts of the first clamp body 7 and the second clamp body 8 are rotatably connected by a rotating shaft, and a torsion spring is sleeved on the rotating shaft. It should be noted that the grounding wire clamp 2 is a product of the existing technology.

[0027] In one embodiment of the present utility model, the first clamping body 7 and the second clamping body 8 both include a clamping portion 9 and a pressing portion 10, and the clamping portion 9 and the pressing portion 10 are integrally formed. The pressing portion 10 of the first clamping body 7 is fixedly connected to a fixing rod 11, and the first clamping body 7 is fixedly connected to the grounding plate 1 through the fixing rod 11. A corresponding clamping groove is provided on the clamping portion 9, and the sub-conductor is clamped in the clamping groove.

[0028] In one embodiment of the present invention, Figure 1 and Figure 4 As shown, the driving mechanism 4 is provided with two, the grounding clamps 2 are arranged in an even number, half of the grounding clamps 2 are fixedly connected to one of the driving mechanisms 4, and the other half of the grounding clamps 2 are electrically connected to the other driving mechanism 4, and the two driving mechanisms 4 are symmetrically distributed. Specifically, the driving mechanism 4 may include a connecting rod 12 and a driving rod 13, wherein one end of the connecting rod 12 is fixedly connected to the pressing portion 10 of the second clamp body 8; the driving rod 13 is a T-shaped or L-shaped structure, and the other end of the connecting rod 12 is fixedly connected to the driving rod 13, and a handle 14 is provided on the driving rod 13, wherein the driving rod 13 is an L-shaped ultra-high voltage grounding device as shown Figure 3 As shown, the driving rod 13 is a T-shaped UHV grounding device. Figure 5 shown.

[0029] In the specific embodiment of the present invention, two, four, six or eight grounding clamps 2 can be provided to form a dedicated grounding device. Figure 4 As shown, four grounding clamps 2 are provided, and every two grounding clamps 2 are connected to a driving mechanism 4 .

[0030] When the device of the present invention is in use, the grounding terminal 3 is fixedly connected to the high-voltage line tower, and the handles 14 of the two driving mechanisms 4 are held by hand, and a certain force is applied to the driving rod 13, so that the two driving rods 13 are close to each other. The driving rod 13 drives the second clamping body 8 to rotate through the connecting rod 12, thereby opening all the grounding clamps 2, and the grounding clamps 2 clamp the sub-conductors, thereby grounding the sub-conductors.

[0031] According to the UHV grounding device of the embodiment of the present invention, the grounding end 3 is firmly fastened to the tower body with a universal grounding terminal 5, and the other end is connected to the grounding plate 1 with a grounding wire 6. It can be quickly and conveniently installed near all line-laying pulleys. By installing multiple grounding clamps 2 on the grounding plate 1, and then driving all the grounding clamps 2 to open at the same time through the provided driving mechanism 4 to clamp the connected sub-conductors, the problem of reliable grounding of all sub-conductors during line laying is solved.

[0032] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0033] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A UHV grounding device, characterized in that: include: ground plate; A grounding terminal, one end of which is connected to the grounding plate, and the other end of which is used to connect to a high-voltage line tower; A grounding clamp, wherein a plurality of grounding clamps are provided and are installed on the end surface of the grounding plate. In an initial state, the grounding clamp is closed and is used to clamp the connecting sub-conductor; A driving mechanism is fixedly connected to the plurality of grounding clamps, and is used to drive the grounding clamps to an open state to clamp the connecting sub-conductors.

2. The UHV grounding device according to claim 1, characterized in that: The middle portion of the grounding plate is hollowed out.

3. The UHV grounding device according to claim 2, characterized in that: The ground terminal includes: A grounding terminal, the grounding terminal being used to connect to a high-voltage line tower; A grounding wire, one end of which is fixedly connected to the grounding terminal, and the other end of which is fixedly connected to the grounding plate.

4. The UHV grounding device according to claim 3, characterized in that: The grounding clamp comprises a first clamping body and a second clamping body. The middle parts of the first clamping body and the second clamping body are rotatably connected via a rotating shaft, and a torsion spring is sleeved on the rotating shaft.

5. The UHV grounding device according to claim 4, characterized in that: The first clamp and the second clamp each include a clamping portion and a pressing portion, the clamping portion and the pressing portion are integrally formed, the pressing portion of the first clamp is fixedly connected to a fixing rod, and the first clamp is fixedly connected to the grounding plate via the fixing rod.

6. The UHV grounding device according to claim 5, characterized in that: The driving mechanisms are provided with two, the grounding clamps are arranged in an even number, half of the grounding clamps are fixedly connected to one of the driving mechanisms, and the other half of the grounding clamps are electrically connected to the other driving mechanism, and the two driving mechanisms are symmetrically distributed. The driving mechanism includes: a connecting rod, one end of which is fixedly connected to the pressing portion of the second clamp; The driving rod is in a T-shaped or L-shaped structure, and the other end of the connecting rod is fixedly connected to the driving rod.

7. The UHV grounding device according to claim 6, characterized in that: A handle is provided on the driving rod.

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