Substation high-voltage line grounding wire hanging and dismounting device

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By designing a substation high-voltage wire grounding wire hanging and disassembly device including a movable base, control box, insulated telescopic arm and power receiving chuck, the problem of difficulty in attaching high-altitude grounding wire of 500kV ultra-high voltage substation is solved, and efficient and safe grounding wire hooking and disassembly are achieved.

CN119627480APending Publication Date: 2025-03-14UHV CO OF STATE GRID HEILONGJIANG ELECTRIC POWER CO LTD +1

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Patent Information

Application Number: CN202411739874.9
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Filing Date: 2024-11-29
Publication Date: 2025-03-14

AI Technical Summary

Technical Problem

The grounding wire of the 500kV ultra-high voltage substation needs to be installed at 8 meters or above due to equipment height. The existing retractable grounding rod cannot be connected to the high-altitude grounding wire due to its own weight, which affects the maintenance efficiency and may cause damage to the transmission line.

Method used

A substation high-voltage wire grounding wire hanging and disassembly device is designed, including a movable base, a control box, an insulated telescopic arm, an electric chuck, a drive slide rail and a push rod. The insulated telescopic arm is rotated at a high altitude through the self-locking function of the drive slide rail. The electric chuck consists of a lightweight insulated rod and a U-shaped hook to avoid the insulated telescopic arm from hanging and pulling the wires.

Benefits of technology

It realizes efficient attachment and disassembly of high-altitude ground wires, avoids the pulling damage of the insulated telescopic arm's self-weight to the wire, improves maintenance efficiency and ensures the safety of the transmission line.

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Abstract

The invention discloses a transformer substation high-voltage wire grounding wire hanging and dismounting device, relates to the technical field of high-voltage wire grounding, and aims to solve the problems that a 500kV ultrahigh-voltage transformer substation needs to be hung at a position of 8 meters or above when being connected with a grounding wire, and an existing telescopic grounding hanging rod cannot complete hanging of a high-altitude grounding wire due to the dead weight of the existing telescopic grounding hanging rod. Comprising a movable base, a control box, an insulating telescopic arm, a power receiving chuck, a driving slide rail and a push rod, the control box is fixed to the upper end of the movable base, the insulating telescopic arm is installed on the side face of the control box and can rotate on the control box, the power receiving chuck is installed at the movable end of the insulating telescopic arm and used for being in lap joint with a to-be-grounded wire, a driving sliding rail is fixed to the movable base, and a push rod is hinged to a sliding block of the driving sliding rail. The power-off maintenance grounding device is used for grounding of electric wires during power-off maintenance, and accidental power supply and induced electricity are prevented from being generated.

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Description

Technical Field

[0001] The invention relates to the technical field of high-voltage line grounding, and in particular to a high-voltage line grounding line hanging and removing device for a transformer substation. Background Art

[0002] At present, the power outage maintenance of 500kV ultra-high voltage substations in the power system needs to install grounding devices to prevent accidental power transmission and induced electricity during the maintenance of high-voltage lines. Due to the height of the equipment, the 500kV system grounding wire needs to be installed at a position of 8 meters or above, and the wire clamp is pushed by the insulating rod to clamp the wire to achieve the purpose of grounding. Due to the high height, the insulating rod shakes severely and manual operation cannot be completed. Large machinery such as cranes and boom trucks are required to lift the staff to a high place, and then use the insulating rod to push the wire clamp to clamp the wire. It takes an average of nearly 40 minutes to complete a grounding wire hanging work. Due to site reasons, the crane needs to be relocated midway, which takes a very long time and seriously affects the maintenance efficiency and affects the stability of social power supply.

[0003] To solve the above problems, the existing solution is to use a retractable grounding wire hanging rod. During the grounding operation, the retractable hanging rod is fully unfolded and the conductive hook is hung on the wire. However, the grounding wire in the 500kV ultra-high voltage substation needs to be installed at 8 meters or above due to the height of the equipment. The retractable hanging rod that can be extended to 8 meters is too heavy. After hanging, it will pull the wire and cause damage to the transmission line. Therefore, only the traditional grounding wire hanging method can be used, and efficient maintenance grounding cannot be achieved. Summary of the invention

[0004] In order to solve the problem that the ground wire of a 500kV ultra-high voltage substation needs to be hung at a position of 8 meters or above, and the existing retractable grounding hanging rod cannot complete the high-altitude ground wire hanging due to its own weight, the present invention further provides a substation high-voltage line grounding wire hanging and removing device to solve the problems raised in the above background technology.

[0005] The technical solution of the present invention is:

[0006] A substation high-voltage line grounding wire hanging and removing device comprises a movable base, a control box, an insulating telescopic arm, a power receiving clamp, a driving slide rail and a push rod; the control box is fixed to the upper end of the movable base, the insulating telescopic arm is installed on the side of the control box, the insulating telescopic arm can rotate on the control box, the power receiving clamp is installed on the movable end of the insulating telescopic arm, the power receiving clamp is used to overlap with the wire to be grounded, the driving slide rail is fixed on the movable base, the slider of the driving slide rail is hinged with a push rod, the push rod is hinged with the insulating telescopic arm, and a control button is installed on the side of the control box;

[0007] Furthermore, the power receiving clamp includes an insulating rod and a U-shaped hook, the insulating rod is installed at the movable end of the insulating telescopic arm, the U-shaped hook is fixed at the top end of the insulating rod, and a group of power receiving ears are symmetrically arranged in the U-shaped hook.

[0008] Furthermore, the power receiving ear is connected to the movable base through a wire.

[0009] Furthermore, the insulating telescopic arm adopts a four-section telescopic arm.

[0010] Furthermore, the insulating telescopic arm has a length of 8-10m after being unfolded.

[0011] Furthermore, the insulating telescopic arm is a rope-driven telescopic arm, and a motor is installed on the insulating telescopic arm, and the motor is used to reel in the traction rope of the insulating telescopic arm.

[0012] Furthermore, the insulating telescopic arm is made of epoxy resin.

[0013] Furthermore, a grounding anchor rod is installed below the movable base, and the power receiving ear is connected to the grounding anchor rod through a wire.

[0014] Furthermore, a plurality of fixing parts are arranged on the movable base.

[0015] Furthermore, a battery pack for supplying power to the insulating telescopic arm and the driving slide rail is arranged in the control box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. A substation high-voltage grounding wire hanging and removing device, the insulating telescopic arm is rotatably connected to the control box, the driving slide rail drives the push rod to push the insulating telescopic arm upward, the insulating telescopic arm lifts the power receiving clamp to 8-10m, and completes the hanging of the ground wire. Compared with the traditional ground wire bonding method, the present invention can achieve high-altitude ground wire bonding, the insulating telescopic arm is completely driven by electricity, the ground wire bonding speed is fast, and the deadweight of the insulating telescopic arm is completely borne by the movable base, so that the power receiving clamp is lightly bonded to the wire, avoiding the insulating telescopic arm hanging in the air on the wire and pulling the wire to cause damage to the transmission line. Completing the grounding operation can prevent accidental power transmission and draining of induced electricity.

[0018] 2. The present invention adopts a driving slide rail to drive the insulating telescopic arm to rotate. The driving slide rail has a self-locking function and does not need to adopt other complicated limiting devices. The insulating telescopic arm that is rotated and erected upward can maintain a fixed angle and will not rotate downward due to its own weight, thereby avoiding the insulating telescopic arm rotating and pulling the wires to cause damage to the transmission line.

[0019] 3. The insulating telescopic arm of the present invention adopts a four-section rope-driven telescopic arm, and the extension and shortening of the telescopic arm are completed by pulling the movable pulley and the fixed pulley group by a nylon rope. Compared with the traditional screw rod or cylinder telescopic rod, the dead weight of the insulating telescopic arm is greatly reduced, and the risk of the insulating telescopic arm tipping over due to gravity is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a substation high voltage line grounding wire hanging and removing device;

[0021] Figure 2 This is a front view of the substation high voltage line grounding wire hanging and removing device;

[0022] Figure 3 It is a schematic diagram of the structure of the power receiving clamp;

[0023] Figure 4 It is a structural schematic diagram of the insulating telescopic arm in an erected state;

[0024] Figure 5 It is a structural schematic diagram of the insulating telescopic arm in the unfolded state.

[0025] In the figure: 101, movable base; 102, control box; 103, insulated telescopic arm; 104, driving slide rail; 105, push rod; 106, control button; 107, fixed part; 108, motor; 2, power receiving clamp; 201, U-shaped hook; 202, power receiving ear; 203, insulating rod. DETAILED DESCRIPTION

[0026] Specific implementation method 1: See Figure 1 and Figure 2 A schematic diagram of the structure of the substation high-voltage line grounding wire hanging and removing device, introducing the working principle of the insulating telescopic arm 103 rotating and lifting. A substation high-voltage line grounding wire hanging and removing device, this embodiment includes a movable base 101, a control box 102, an insulating telescopic arm 103, a power receiving clamp 2, a driving slide rail 104 and a push rod 105; the control box 102 is fixed to the upper end of the movable base 101, the insulating telescopic arm 103 is installed on the side of the control box 102, the insulating telescopic arm 103 can rotate on the control box 102, the power receiving clamp 2 is installed on the movable end of the insulating telescopic arm 103, the power receiving clamp 2 is used to overlap with the wire to be grounded, the movable base 101 is fixed with a driving slide rail 104, the slider of the driving slide rail 104 is hinged with a push rod 105, the push rod 105 is hinged with the insulating telescopic arm 103, and the control button 106 is installed on the side of the control box 102.

[0027] Furthermore, the movable base 101 plays a supporting role, which is used to increase the contact area between the control box 102 and the ground, so as to improve the anti-dumping ability of the overall structure. The control box 102 is fixed on the top of the movable base 101 by bolts, and an axial hole is provided on the side of the control box 102. A rotating shaft is fixed on the lower end of the insulating telescopic arm 103. The axial hole on the control box 102 is rotatably connected with the rotating shaft on the insulating telescopic arm 103 through a bearing, so that the insulating telescopic arm 103 can be rotated upward around the movable base 101 to stand up and rotated downward to close. The driving rail 104 is fixed to the upper end of the movable base 101 by bolts. The driving rail 104 adopts a screw linear guide rail, which can realize the self-locking function. The moving slider of the driving rail 104 is hinged to the lower end of the push rod 105, and the upper end of the push rod 105 is hinged to the middle section of the insulating telescopic arm 103. When the driving rail 104 moves forward to the right, the push rod 105 drives the insulating telescopic arm 103 to be lifted upward. When the driving rail 104 moves forward to the left, the push rod 105 drives the insulating telescopic arm 103 to be laid down. Then, the lifting and laying down of the insulating telescopic arm 103 are achieved by the forward and backward movement of the driving rail 104. As a replaceable embodiment, the driving rail 104 and the push rod 105 can be replaced by an electric telescopic rod, the tail of which is rotatably connected to the movable base 101, and the movable end of the electric telescopic rod is rotatably connected to the insulating telescopic arm 103. When the electric telescopic rod is extended, the insulating telescopic arm 103 is pushed to rotate upward and lifted. When the electric telescopic arm is shortened, the insulating telescopic arm 103 is rotated downward and laid down.

[0028] Furthermore, because the insulating telescopic arm 103 of the present device has a large deadweight, the traditional method uses a motor to drive the rotating shaft at the lower end of the insulating telescopic arm 103 to rotate to achieve lifting and laying down. The torque on the rotating shaft is large and is prone to breakage. The present device uses a triangular structure to drive the insulating telescopic arm 103 to rotate, so that the rotating shaft is not subjected to torsion and the force on the rotating shaft is reduced. The driving slide rail 104 uses a screw guide rail with a self-locking function, so that the insulating telescopic arm 103 maintains a fixed posture after unfolding, preventing the insulating telescopic arm 103 from tilting and pulling the wires, causing damage to the transmission line. The control button 106 is used to control the lifting and laying down of the insulating telescopic arm 103, the extension and retraction of the insulating telescopic arm 103, so that the present device can achieve automatic grounding wire hanging, reducing construction time and labor costs.

[0029] Specific implementation method 2: See Figure 2 Schematic diagram of the structure of the power receiving clamp. In this embodiment, the power receiving clamp 2 includes an insulating rod 203 and a U-shaped hook 201. The insulating rod 203 is installed at the movable end of the insulating telescopic arm 103, and the U-shaped hook 201 is fixed to the top of the insulating rod 203. A group of power receiving ears 202 are symmetrically arranged in the U-shaped hook 201.

[0030] Specific implementation method three: See Figure 2As shown, the power receiving ear 202 in this embodiment is connected to the movable base 101 through a wire.

[0031] Furthermore, the insulating rod 203 is fixed to the upper end of the insulating telescopic arm 103 by bolts, and the insulating rod 203 plays an insulating function. The U-shaped hook 201 is a U-shaped structure with an opening downward, and the power receiving ear 202 arranged at its opening is used to contact the wire to achieve grounding. As an alternative embodiment, the U-shaped hook 201 can be set as a U-shaped structure with an opening upward, which is the opposite of the structure in the attached figure of the present device. Because the high-voltage line grounding wire hanging and disassembly device of the substation has a self-supporting function, the upwardly opening U-shaped hook 201 can drag the wire to achieve grounding. After disconnecting the grounding wire, the present device can also be used as a lifting tool for the hanging wire to achieve multiple functions.

[0032] Specific implementation method four: see Figure 4-5 As shown, the insulating telescopic arm 103 of this embodiment adopts a four-section telescopic arm.

[0033] Specific implementation method five: see Figure 4-5 As shown, the insulating telescopic arm 103 of this embodiment has a length of 8-10m after being unfolded.

[0034] Specific implementation method six: see Figure 4-5 As shown, the insulating telescopic arm 103 of this embodiment adopts a rope-driven telescopic arm, and a motor 108 is installed on the insulating telescopic arm 103. The motor 108 is used to drive the traction rope for winding up the insulating telescopic arm 103.

[0035] Specific implementation method seven: See Figure 4-5 As shown, the insulating telescopic arm 103 of this embodiment is made of epoxy resin.

[0036] Furthermore, the insulating telescopic arm 103 adopts a multi-stage telescopic arm, and the present device is preferably a four-stage telescopic arm, and the length after full expansion is 8-10m. The insulating telescopic arm 103 adopts a rope drive, and the fixed pulley and the movable pulley group are pulled by the traction rope to realize the expansion of the telescopic arm, which greatly reduces the dead weight compared with the screw rod or cylinder type telescopic arm. The insulating telescopic arm 103 is made of epoxy resin, and the traction rope is made of nylon rope, which improves the overall insulation performance of the insulating telescopic arm 103.

[0037] Specific implementation method eight: See Figure 1 As shown, a grounding anchor rod is installed below the movable base 101 of this embodiment, and the power receiving ear 202 is connected to the grounding anchor rod through a wire.

[0038] Specific implementation method nine: See Figure 1 As shown, a plurality of fixing parts 107 are provided on the movable base 101 of this embodiment.

[0039] Specific implementation method ten: See Figure 1-5 As shown, the control box 102 of this embodiment is provided with a battery pack for supplying power to the insulating telescopic arm 103 and the driving slide rail 104 .

[0040] Furthermore, the fixing portion 107 on the movable base 101 can fix the movable base 101 on the ground through anchor rods, so that the grounding operation can be completed at an inclined construction site. The battery pack enables the device to be connected to the grounding wire without the aid of an external power supply.

[0041] When in use, fix the movable base 101 on the ground and insert the grounding anchor into the ground. Lift the insulating telescopic arm 103 to between 75° and 80°, then extend the insulating telescopic arm 103 to slightly above the power line, then shorten the insulating telescopic arm 103 until the power receiving clamp 2 hooks the power line to complete the grounding process. After use, extend the insulating telescopic arm 103 until the power line is out of the power receiving clamp 2, then retract the insulating telescopic arm 103 to complete the disassembly of the grounding device.

Claims

1. A substation high voltage line grounding wire hanging and removing device, characterized in that: The invention comprises a movable base (101), a control box (102), an insulating telescopic arm (103), a power receiving clamp (2), a driving slide rail (104) and a push rod (105); the control box (102) is fixed on the upper end of the movable base (101), the insulating telescopic arm (103) is installed on the side of the control box (102), the insulating telescopic arm (103) can rotate on the control box (102), the power receiving clamp (2) is installed on the movable end of the insulating telescopic arm (103), the power receiving clamp (2) is used for overlapping with the wire to be grounded, the driving slide rail (104) is fixed on the movable base (101), the push rod (105) is hinged on the slider of the driving slide rail (104), the push rod (105) is hinged to the insulating telescopic arm (103), and the control button (106) is installed on the side of the control box (102).

2. The substation high voltage line grounding wire hanging and removing device according to claim 1 is characterized in that: The power receiving clamp (2) comprises an insulating rod (203) and a U-shaped hook (201), wherein the insulating rod (203) is mounted on the movable end of the insulating telescopic arm (103), the U-shaped hook (201) is fixed on the top end of the insulating rod (203), and a group of power receiving ears (202) are symmetrically arranged in the U-shaped hook (201).

3. The substation high voltage line grounding wire hanging and removing device according to claim 2 is characterized in that: The power receiving ear (202) is connected to the movable base (101) via a wire.

4. The substation high voltage line grounding wire hanging and removing device according to claim 1 is characterized in that: The insulating telescopic arm (103) is a four-section telescopic arm.

5. The substation high voltage line grounding wire hanging and removing device according to claim 4 is characterized in that: The insulating telescopic arm (103) has a length of 8-10 m after being unfolded.

6. The substation high voltage line grounding wire hanging and removing device according to claim 5 is characterized in that: The insulating telescopic arm (103) is a rope-driven telescopic arm. A motor (108) is installed on the insulating telescopic arm (103). The motor (108) is used to drive a traction rope for winding up the insulating telescopic arm (103).

7. The substation high voltage line grounding wire hanging and removing device according to claim 6 is characterized by: The insulating telescopic arm (103) is made of epoxy resin.

8. The substation high voltage line grounding wire hanging and removing device according to claim 2 is characterized by: A grounding anchor rod is installed below the movable base (101), and the power receiving ear (202) is connected to the grounding anchor rod via a wire.

9. The substation high voltage line grounding wire hanging and removing device according to claim 1, characterized in that: The movable base (101) is provided with a plurality of fixing parts (107).

10. The substation high voltage line grounding wire hanging and removing device according to claim 1, characterized in that: A battery pack for supplying power to the insulating telescopic arm (103) and the driving slide rail (104) is arranged in the control box (102).