Current transformer (CT) coil lifting device

Abstract

The invention discloses a current transformer (CT) coil lifting device which comprises a hanging ring, a lifting beam and a fixing device. When a CT coil is placed on the fixing device to be fixed, only a short rope is required for firmly binding the CT coil and the fixing device; a lifting device can directly lift the CT coil and the fixing device through the hanging ring, the operation is simple, and the lifting is convenient; and when the CT coil is sleeved on an outer base portion of a casing pipe, angles of the CT coil can be adjusted by controlling the fixing device, so that a coil contour of the CT coil which is sleeved on the casing pipe can be prevented from being directly adjusted, difficulties of angle adjustment are reduced, and the risk that the porcelain casing pipe of a high voltage tank-type circuit breaker is damaged is reduced. Accordingly, the CT coil lifting device is capable of improving sleeving efficiencies and reducing sleeve installation risks.

Description

technical field [0001] The invention belongs to the technical field of hoisting devices, in particular to a CT (current transformer, current transformer) coil hoisting device. Background technique [0002] The expansion and transformation of the metering circuit of the high-voltage tank circuit breaker is the main project of the maintenance of the primary equipment of the substation. Added signal requirements for loops. In the process of expansion and transformation, it is necessary to install the newly added CT coil on the outer root of the bushing of the high-voltage tank circuit breaker. [0003] In the prior art, the newly added CT coil is installed on the outer root of the bushing of the high-voltage tank circuit breaker, and the specific method is as follows: the CT coil is directly fixed with a sling, and the sling hook is hung on the hook of the lifting device, so that The CT coil is hoisted by the sling, and then the CT coil is fitted manually to the outer root of...

AI Technical Summary

Problems solved by technology

[0004] After the sling is used to directly fix the CT coil and the sling is hooked to the lifting equipment for hoisting, during the assembly process, the control of the CT coil angle must be realized by the operator directly by adjusting and controlling the CT coil, that is, the operator needs to directly It is inconvenient for the operator to grasp and control the circular contour of the CT coil set on the bushing, so this operation method brings difficulty to angle adjustment, which in turn increases the porcelain quality of the high-voltage tank circuit breaker. The risk of casing damage, so the above-mentioned method of directly fixing the CT coil with a sling has the disadvantages of high risk and low efficiency

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