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Device used for replacing spacers on ultra-high voltage transmission line

A technology of transmission lines and spacers, which is applied in the direction of overhead lines/cable equipment, etc., can solve the problems of inconvenient operation, slow replacement speed, inconvenient carrying, etc., and achieve the effect of convenient operation, labor-saving, simple structure, and versatility

Active Publication Date: 2015-06-24
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current wrench for replacing the spacer has the defects of complex structure, large volume, inconvenient to carry, time-consuming and laborious, long adjustment handle, inconvenient operation, and slow replacement speed.
There are also defects that cannot be used universally for different split wires

Method used

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  • Device used for replacing spacers on ultra-high voltage transmission line

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Embodiment Construction

[0015] Such as figure 1 As shown, the universal tool for replacing spacer rods on UHV transmission lines disclosed by the present invention includes adjusting oil cylinder 1, oil cylinder liner 2, piston rod 3, compression spring 4, upper positioning block 5, adjusting screw sleeve 6, Piston 7, adjusting screw mandrel 8, adjusting handle 9 and C-shaped chuck 10.

[0016] The cylinder body of regulating oil cylinder 1 is the double-chamber cylinder body that the front is large and the rear is small, and its front chamber is a decompression chamber, and its outer wall head has external threads. The longitudinal section shape of the oil cylinder liner 2 is T-shaped, with a T-shaped through hole in the axial center, an internal thread on the head hole wall, and an exhaust hole 13 at the bottom. The oil cylinder liner 2 is connected to the outer wall of the pressure reducing chamber of the regulating oil cylinder 1 through threads. Stage clip 4 is connected to the outer wall of p...

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Abstract

The invention discloses a general tool used for replacing spacers on an ultra-high voltage transmission line. The device comprises a chuck and an adjusting oil cylinder connected with the chuck, and the adjusting oil cylinder comprises a communicated double-cavity cylinder body with the big front portion and the small rear portion. A front cavity is a voltage reduction cavity, the head of the front cavity is connected with an oil cylinder sleeve, and a piston rod penetrating through the oil cylinder sleeve and can automatically rebound is arranged inside the cavity body of the front cavity. A rear cavity is a direct voltage cavity, and the rear end of a piston inside the rear cavity is connected with an adjusting lead screw penetrating through the wall of the cavity body of the rear cavity. Before the device is used, the direct voltage cavity is filled with hydraulic oil, the adjusting lead screw pushes the piston to move forwards to extrude the hydraulic oil for primary voltage reduction, the hydraulic oil pushes the piston rod to move forwards for secondary voltage reduction, and an upper locating block at the outer end of the piston rod pushes a movable snap ring of each spacer line chuck to move forwards until the movable snap ring goes over an installation hole of a cotter-pin on the corresponding line chuck and clamps each split wire through the cotter-pin. The structure is simple, operation is convenient, labor is saved, an externally connected power source is not needed, and the device is light and convenient to carry, can adapt to replacement of multiple split wire spacers of different voltage grades, and has the universality.

Description

technical field [0001] The invention relates to a tool for use on a power transmission line, in particular to a general device for replacing spacers on an extra-high voltage transmission line. Background technique [0002] At present, 500kV transmission lines generally use four-split or six-split conductors, and ultra-high voltage transmission lines with voltages higher than 500kV use six-eight-split or more split conductors. In order to ensure that the spacing between the split wire harnesses remains unchanged to meet the electrical performance and ensure the flow capacity, spacers are installed at a certain distance in the span. Installing the spacer can also play a certain role in restraining the vibration of the wire and the breeze vibration. However, the wrench for replacing the spacer has the disadvantages of complex structure, large volume, inconvenient to carry, time-consuming and laborious, long adjustment handle, inconvenient operation, and slow replacement speed....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/02
Inventor 任承贤郑克全雷冬云龚政雄李辉牛捷向云甄朝辉章健军童诚
Owner STATE GRID CORP OF CHINA
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