A new type of grounding device for maintenance of UHV lines

Abstract

The present invention relates to the technical field of high-voltage equipment, and discloses a new type of grounding device for maintenance of ultra-high voltage lines, including a guide tube and a protective shell. The new type of grounding device for maintenance of ultra-high voltage lines controls the start and stop of a DC motor and the direction of rotation through a wireless control module. When the DC motor is powered on and rotated, it drives the threaded rod to rotate. At this time, the threaded sleeve moves upward or downward under the drive of the threaded rod. In this process, the threaded sleeve drives the connecting plate to move, so that the chuck rotates with the rotating shaft as the center of the circle, thereby realizing the closing and opening action between the chucks, so that it is very convenient to clamp and connect with the guide tube. The device transforms the original manual connection and removal of the grounding wire into remote control through a series of mechanical structures. Compared with manual installation and disassembly, the effect is better and faster, and the operation is faster during construction on the ultra-high voltage line, and the safety of the staff can be indirectly increased.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage equipment, and in particular to a new type of grounding device for maintenance of ultra-high voltage lines. Background Art

[0002] UHV transmission lines refer to the transmission of electric energy at voltage levels of ±800 kV and above direct current and 1000 kV and above alternating current. UHV transmission is developed on the basis of ultra-high voltage transmission. Its purpose is still to continue to improve the transmission capacity, realize high-power medium and long-distance transmission, and realize long-distance power system interconnection and build a joint power system. The transmission power of 1000 kV UHV AC transmission lines is about 4 to 5 times that of 500 kV lines; the transmission capacity of ±800 kV direct current UHV transmission is more than twice that of ±500 kV lines. At the same time, UHV AC lines can extend the maximum transmission distance by 3 times while transmitting the same power, and the loss is only 25% to 40% of that of 500 kV lines.

[0003] In order to ensure the safety of the ultra-high voltage lines on the market, regular maintenance is required. During the maintenance process, a large number of grounding wires need to be hung first and then multi-split safety grounding wires are hung. The multi-split safety grounding wire is simple to use, but the hanging process is complicated and the workload is large. There are certain safety hazards in the implementation process. This method damages the wires. Therefore, a new type of grounding device for ultra-high voltage line maintenance is proposed to solve the above-mentioned problems. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a new type of grounding device for maintenance of ultra-high voltage lines, which has the advantages of avoiding damage to the conductors and solves the problem of damage to the conductors.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of avoiding damage to the wires and achieving good grounding of the wires, the present invention provides the following technical solutions: a new type of grounding device for maintenance of ultra-high voltage lines, comprising a guide tube and a protective shell, the bottom of the guide tube is fixedly connected with two connecting vertical plates and one mounting plate, the bottom of the mounting plate is fixedly connected with a junction clamp body, the outer surface of the junction clamp body is fixedly connected with a clamp cover, the front and rear sides of the junction clamp body and the bottom of the mounting plate are fixedly connected with a clamp, the front and rear side walls inside the protective shell are respectively fixedly connected with a battery and a wireless control module, the inside of the protective shell is fixedly connected with a DC motor, the bottom of the DC motor is fixedly connected with a motor bracket connected to the protective shell, the output shaft of the DC motor is fixedly connected with a threaded rod extending to the bottom of the protective shell, the inside of the motor bracket is fixedly connected with a bearing seat connected to the threaded rod, and the protective shell The bottom is fixedly connected with a piston rod, the outside of the piston rod is sleeved with a spring tube, the bottom of the piston rod is fixedly connected with a pressure spring connected to the spring tube, the outside of the spring tube is sleeved with a connecting block, two rotating shafts are fixedly connected between the front and rear side walls inside the connecting block, the outside of the rotating shaft is sleeved with a chuck in contact with the guide tube, the outside of the threaded rod is sleeved with a threaded sleeve located inside the connecting block and matching the threaded rod, the threaded sleeve and the chuck are movably connected through a connecting plate, the front and rear sides of the chuck are fixedly connected with a grounding soft copper wire, the left side of the piston rod is fixedly connected with a pin body, the left side of the pin body is inserted with a movable rod extending into the interior of the piston rod, the outside of the movable rod is sleeved with a movable plate located inside the pin body, the left side of the movable plate is fixedly connected with a reset spring connected to the pin body, the inside of the pin body is movably connected with an eccentric handle, and the inside of the connecting block is fixedly connected with a travel switch in contact with the guide tube.

[0008] Preferably, there are three pairs of the clamps, the middle pair of the clamps consists of two clamps and four connecting mounting plates, the upper and lower clamps are fixedly connected to two connecting mounting plates on opposite sides, and the upper and lower connecting mounting plates are symmetrically distributed.

[0009] Preferably, there are eight clamping covers in total, and the eight clamping covers are equidistantly distributed in a ring shape.

[0010] Preferably, a positioning groove is provided on the left side of the piston rod, and the positioning groove is a cylindrical groove.

[0011] Preferably, a hollow cavity is opened inside the pin body, a movable rod penetrating the hollow cavity and extending to the inside of the positioning slot is inserted into the left side of the pin body, a movable plate located inside the hollow cavity is sleeved on the outside of the movable rod, and a return spring is fixedly connected to the left side of the movable plate, which is sleeved on the outside of the movable rod and connected to the left side wall of the hollow cavity.

[0012] Preferably, the pin body is composed of one cylindrical block and two vertical plates, the left side of the cylindrical block is fixedly connected to the two vertical plates, and an eccentric handle is movably connected between the front and rear vertical plates.

[0013] Preferably, the eccentric handle is composed of two rotating connecting shafts and one eccentric handle, and the rotating connecting shafts are fixedly connected to the front and rear side walls of the eccentric handle.

[0014] Preferably, the DC motor is located between the battery and the wireless control module, and the battery and the DC motor are electrically connected, and the wireless control module and the DC motor are signal connected.

[0015] Preferably, grooves are formed on opposite sides of the two chucks, and the grooves are circular grooves.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a new type of grounding device for maintenance of UHV lines, which has the following beneficial effects:

[0018] 1. The new type of grounding device for maintenance of UHV lines controls the start and stop and the rotation direction of the DC motor through a wireless control module. When the DC motor is powered on, it drives the threaded rod to rotate. At this time, the threaded sleeve moves upward or downward under the drive of the threaded rod. In this process, the threaded sleeve drives the connecting plate to move, so that the chuck rotates with the rotating shaft as the center of the circle, thereby realizing the closing and opening action between the chucks, so that it is very convenient to clamp and connect with the guide pipe. The device uses a series of mechanical structures to transform the original manual connection and removal of the grounding wire into remote control. Compared with manual installation, disassembly and clamping, the effect is better and faster. It can work faster during construction on UHV lines and can indirectly increase the safety of workers.

[0019] 2. The new type of grounding device for maintenance of UHV lines uses eight clamp covers to enable the combined line clamp body to be connected to eight UHV lines at the same time. By fixing the clamp to the outside of the steel pipe in the UHV line, the three pairs of clamps work together to make the combined line clamp body more stably fixed during use. When used together with the clamp and the guide tube, the original string structure is ensured while the eight wires are grounded at the same time, avoiding direct connection and damage to the wires. The clamp and other structures are small and light, making it easy for construction workers to carry them to the tower. The grounding wire is installed and removed by electric means, which can effectively complete the induction grounding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a new type of grounding device for maintenance of UHV lines proposed by the present invention;

[0021] Figure 2 This is a left view of a new type of grounding device for maintenance of UHV lines proposed by the present invention;

[0022] Figure 3 A new type of grounding device structure for maintenance of ultra-high voltage lines proposed by the present invention Figure 1 Schematic diagram of the connection between 9 and 12;

[0023] Figure 4 A new type of grounding device structure for maintenance of ultra-high voltage lines proposed by the present invention Figure 2 Schematic diagram of the connection between 9 and 12;

[0024] Figure 5 A new type of grounding device structure for maintenance of ultra-high voltage lines proposed by the present invention Figure 3 Enlarged schematic diagram at point A in the middle.

[0025] In the figure: 1 guide tube, 2 return spring, 3 mounting plate, 4 confluence line clamp body, 5 clamp cover, 6 connecting vertical plate, 7 clamp, 8 clamp head, 9 protective shell, 10 battery, 11 wireless control module, 12 DC motor, 13 motor bracket, 14 bearing seat, 15 piston rod, 16 spring cylinder, 17 pressure spring, 18 connecting block, 19 threaded rod, 20 threaded sleeve, 21 connecting plate, 22 rotating shaft, 23 grounding soft copper wire, 24 positioning slot, 25 pin body, 26 eccentric handle, 27 hollow cavity, 28 movable rod, 29 movable plate, 30 travel switch. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-5A new type of grounding device for maintenance of ultra-high voltage lines, including a guide tube 1 and a protective shell 9, the guide tube 1 is composed of a guide tube body and a nylon pad, the top of the guide tube body is fixedly connected with a nylon pad in contact with a travel switch 30, the nylon pad plays a role in protecting the travel switch 30, avoiding direct contact between the travel switch 30 and the guide tube body, and plays an insulating role, the bottom of the guide tube 1 is fixedly connected with two connecting vertical plates 6 and one mounting plate 3, the bottom of the mounting plate 3 is fixedly connected with a junction clamp body 4, the outer surface of the junction clamp body 4 is fixedly connected with a clamp cover 5, there are eight clamp covers 5, the eight clamp covers 5 are equidistantly distributed in a ring, the front and rear sides of the junction clamp body 4 and the bottom of the mounting plate 3 are fixedly connected with a clamp 7, the clamp There are three pairs of hoops 7. The middle pair of hoops 7 consists of two clamps and four connecting mounting plates. Two connecting mounting plates are fixedly connected to the opposite sides of the upper and lower clamps, and the upper and lower connecting mounting plates are symmetrically distributed. The front and rear side walls inside the protective shell 9 are respectively fixedly connected with a battery 10 and a wireless control module 11. The wireless control module 11 enables the DC motor 12 to be remotely controlled. The wireless control module 11 enables the DC motor 12 to rotate forward or reverse under the remote control of the staff, thereby controlling the opening and closing of the chuck 8. The DC motor 12 is fixedly connected to the inside of the protective shell 9. The DC motor 12 is located between the battery 10 and the wireless control module 11, and the battery 10 and the DC motor 12 are electrically connected, and the wireless control module 11 and the DC motor 12 are signal connected. The bottom of the DC motor 12 is fixedly connected to a motor bracket 13 connected to the protective shell 9, and the output shaft of the DC motor 12 is fixedly connected to a threaded rod 19 extending to the bottom of the protective shell 9. The inside of the motor bracket 13 is fixedly connected to a bearing seat 14 connected to the threaded rod 19. The bottom of the protective shell 9 is fixedly connected to a piston rod 15. A positioning groove 24 is provided on the left side of the piston rod 15. The positioning groove 24 is a cylindrical groove. The outside of the piston rod 15 is sleeved with a spring cylinder 16. The bottom of the piston rod 15 is fixedly connected with a pressure spring 17 connected to the spring cylinder 16. The outside of the spring cylinder 16 is sleeved with a connecting block 18. The front of the connecting block 18 Two rotating shafts 22 are fixedly connected between the rear two side walls, and the outer part of the rotating shaft 22 is sleeved with a chuck 8 in contact with the guide tube 1, and grooves are provided on the opposite sides of the two chucks 8, and the grooves are circular grooves. The outer part of the threaded rod 19 is sleeved with a threaded sleeve 20 located inside the connecting block 18 and matching the threaded rod 19, and the threaded sleeve 20 and the chuck 8 are movably connected through a connecting plate 21. The front and rear sides of the chuck 8 are fixedly connected with a grounding soft copper wire 23, and the left side of the piston rod 15 is fixedly connected with a pin body 25, and a hollow cavity 27 is provided inside the pin body 25. A movable rod 28 that penetrates the hollow cavity 27 and extends to the inside of the positioning slot 24 is inserted on the left side of the pin body 25, and the outer part of the movable rod 28 is sleeved with a movable plate 29 located inside the hollow cavity 27.The left side of the movable plate 29 is fixedly connected with a return spring 2 which is sleeved on the outside of the movable rod 28 and connected to the left side wall of the hollow cavity 27. The pin body 25 is composed of a cylindrical block and two vertical plates. The left side of the cylindrical block is fixedly connected with two vertical plates. An eccentric handle 26 is movably connected between the front and rear vertical plates. The eccentric handle 26 is composed of two rotating connecting shafts and one eccentric handle. The front and rear side walls of the eccentric handle are fixedly connected with rotating connecting shafts. The left side of the pin body 25 is plugged with a movable rod 28 extending to the inside of the piston rod 15. The movable rod 28 The outer sleeve is connected with a movable plate 29 located inside the pin body 25, and the left side of the movable plate 29 is fixedly connected with a return spring 2 connected to the pin body 25. The pin body 25 is internally movably connected with an eccentric handle 26. The interior of the connecting block 18 is fixedly connected with a travel switch 30 in contact with the guide tube 1. When the nylon pad touches the contact switch of the electric grounding clamp, the DC motor 12 automatically starts to realize the function of closing the clamp 8 to clamp the guide tube 1. The start and stop and rotation direction of the DC motor 12 are controlled by the wireless control module 11. When the DC motor 12 is powered on and rotates, it drives the threaded rod 19 to rotate. At this time, the threaded sleeve 20 Driven by the threaded rod 19, it moves upward or downward. During this process, the threaded sleeve 20 drives the connecting plate 21 to move, so that the clamp 8 rotates with the rotating shaft 22 as the center, thereby realizing the closing and opening action between the clamps 8, so that it is very convenient to clamp and connect with the guide pipe 1. The device uses a series of mechanical structures to transform the clamp 8 that originally required manual installation and fixation into remote control. Compared with manual installation and clamping, the effect is better and faster. Faster operation during construction on UHV lines can indirectly increase the safety of workers. Through eight clamp covers 5 enables the converging clamp body 4 to be connected to eight UHV lines at the same time. By fixing the clamp 7 on the outside of the steel pipe in the UHV line, the three pairs of clamps 7 work together to make the converging clamp body 4 more stable when used. At this time, when used together with the clamp 8 and the guide tube 1, the original string structure is ensured while the eight wires are grounded at the same time, avoiding direct connection of the wires and damage to the wires. The clamp 8 and other structures are small and light, making it easy for construction workers to carry them to the tower. The grounding wire is installed and removed by electric means, which can effectively complete the induction grounding. ,

[0028] In summary, the new type of grounding device for maintenance of UHV lines controls the start and stop and the rotation direction of the DC motor 12 through the wireless control module 11. When the DC motor 12 is powered on and rotated, it drives the threaded rod 19 to rotate. At this time, the threaded sleeve 20 moves upward or downward under the drive of the threaded rod 19. In this process, the threaded sleeve 20 drives the connecting plate 21 to move, so that the clamp 8 rotates with the rotating shaft 22 as the center of the circle, thereby realizing the closing and opening action between the clamps 8, so that it is very convenient to clamp and connect with the guide pipe 1. The device uses a series of mechanical structures to transform the original manual connection and removal of the grounding wire into remote control. Compared with manual installation, disassembly and clamping, the effect is better and faster, and construction on UHV lines is more convenient. It can make the operation faster and indirectly increase the safety of the workers. The eight clamp covers 5 make the merge clamp body 4 able to be connected to eight UHV lines at the same time. The clamp 7 is fixed to the outside of the steel pipe in the UHV line. At this time, the four clamps 7 work together to make the merge clamp body 4 more stably fixed when in use. At this time, when used together with the clamp 8 and the guide tube 1, the original string structure is ensured while the eight wires are grounded at the same time, avoiding direct connection of the wires and damage to the wires. The clamp 8 and other structures are small and light, making it easy for construction workers to carry them to the tower. The grounding wire is installed and removed by electric means, which can effectively complete the induction grounding and solve the problem of wire damage.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel grounding device for maintenance of ultra-high voltage lines, comprising a flow guide tube (1) and a protective shell (9), characterized in that: The bottom of the flow guide tube (1) is fixedly connected with two connecting vertical plates (6) and one mounting plate (3); the bottom of the mounting plate (3) is fixedly connected with a junction clamp body (4); a clamp cover (5) is fixedly connected to the outer surface of the junction clamp body (4); a clamp hoop (7) is fixedly connected to the front and rear sides of the junction clamp body (4) and the bottom of the mounting plate (3); a battery (10) and a wireless control module (11) are fixedly connected to the front and rear side walls inside the protective shell (9), respectively; a DC motor (11) is fixedly connected to the inside of the protective shell (9); The bottom of the DC motor (12) is fixedly connected to a motor bracket (13) connected to the protective shell (9); the output shaft of the DC motor (12) is fixedly connected to a threaded rod (19) extending below the protective shell (9); the inside of the motor bracket (13) is fixedly connected to a bearing seat (14) connected to the threaded rod (19); the bottom of the protective shell (9) is fixedly connected to a piston rod (15); the outside of the piston rod (15) is sleeved with a spring tube (16); the bottom of the piston rod (15) is fixedly connected to a pressure rod (16) connected to the spring tube (16); A force spring (17) is sleeved on the outside of the spring cylinder (16) with a connecting block (18), two rotating shafts (22) are fixedly connected between the front and rear side walls inside the connecting block (18), the outer side of the rotating shaft (22) is sleeved with a chuck (8) in contact with the guide tube (1), the outer side of the threaded rod (19) is sleeved with a threaded sleeve (20) located inside the connecting block (18) and matching the threaded rod (19), the threaded sleeve (20) and the chuck (8) are movably connected through a connecting plate (21), and the front and rear sides of the chuck (8) are fixedly connected with grounding soft copper The piston rod (15) is fixedly connected to a pin body (25) on the left side, a movable rod (28) extending into the interior of the piston rod (15) is inserted into the left side of the pin body (25), a movable plate (29) located inside the pin body (25) is sleeved on the outside of the movable rod (28), a return spring (2) connected to the pin body (25) is fixedly connected to the left side of the movable plate (29), an eccentric handle (26) is movably connected inside the pin body (25), and a travel switch (30) in contact with the guide tube (1) is fixedly connected inside the connecting block (18).

2. A new type of grounding device for maintenance of UHV lines according to claim 1, characterized in that: There are three pairs of the clamps (7), the middle pair of the clamps (7) is composed of two clamp bodies and four connecting mounting plates, the upper and lower clamp bodies are fixedly connected to the opposite sides thereof with two connecting mounting plates, and the upper and lower connecting mounting plates are symmetrically distributed.

3. The novel grounding device for maintenance of UHV lines according to claim 1 is characterized in that: There are eight clamping covers (5) in total, and the eight clamping covers (5) are distributed in a circular shape and at equal intervals.

4. The novel grounding device for maintenance of UHV lines according to claim 1 is characterized in that: A positioning groove (24) is provided on the left side of the piston rod (15), and the positioning groove (24) is a cylindrical groove.

5. A new type of grounding device for maintenance of UHV lines according to claim 4, characterized in that: The pin body (25) has a hollow cavity (27) formed inside, a movable rod (28) penetrating the hollow cavity (27) and extending into the interior of the positioning slot (24) is inserted on the left side of the pin body (25), a movable plate (29) located inside the hollow cavity (27) is sleeved on the outside of the movable rod (28), and a return spring (2) sleeved on the outside of the movable rod (28) and connected to the left side wall of the hollow cavity (27) is fixedly connected on the left side of the movable plate (29).

6. A new type of grounding device for maintenance of UHV lines according to claim 1, characterized in that: The pin body (25) is composed of a cylindrical block and two vertical plates. The left side of the cylindrical block is fixedly connected to the two vertical plates, and an eccentric handle (26) is movably connected between the front and rear vertical plates.

7. The novel grounding device for maintenance of UHV lines according to claim 1 is characterized by: The eccentric handle (26) is composed of two rotating connecting shafts and one eccentric handle, and the rotating connecting shafts are fixedly connected to the front and rear side walls of the eccentric handle.

8. The novel grounding device for maintenance of UHV lines according to claim 1 is characterized by: The DC motor (12) is located between the battery (10) and the wireless control module (11), and the battery (10) and the DC motor (12) are electrically connected, and the wireless control module (11) and the DC motor (12) are signal connected.

9. A new type of grounding device for maintenance of UHV lines according to claim 1, characterized in that: The two clamps (8) are provided with grooves on opposite sides thereof, and the grooves are circular grooves.

Images