JP2522581B2 - Winding lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a winding lifting device for a disassembling transportation transformer for reassembling an iron core and winding on site.

(Prior art) In recent years, transformers are often installed in mountainous areas where transportation conditions are severe. In this case, transportation of transformers becomes a problem, and in the case of large-capacity, large-sized transformers, the contents of the transformer are also iron cores. It is conceivable to disassemble and transport the coil and the winding and reassemble them on site.

When such disassembly transportation and assembly are conventionally adopted, if the winding wire is lifted at the time of assembling the contents locally, there is a possibility that the winding wire may contact with the surrounding structure, collide, or suddenly suspend at an abnormal speed. When there was such an abnormality, the worker judged the damage visually from the outside.

(Problems to be solved by the invention) In this system, in order to make the winding compact and improve the assembly quality at the time of transportation, in the recent winding construction in which the periphery thereof is covered with an insulating cylinder, a tightening plate, or a sealing film, Visual inspection inside the winding is not possible due to their presence.

Therefore, disassembling and inspecting the coil is necessary when conducting an internal inspection. Disassembling the winding in a local environment that is inferior to the factory equipment involves problems such as deterioration of quality and further need for a local drying process due to the inclusion of dust and foreign matter and moisture absorption of the insulator.

The present invention is a disassembling and transporting transformer that disassembles and transports and reassembles iron cores and windings locally, and visually inspects the appearance to determine whether or not there is any abnormality in the winding assembly work result, which is the most important for ensuring reliability. In addition to predicting and judging the abnormality inside the winding,
It is an object of the present invention to obtain a winding hoisting device capable of improving the quality of on-site assembly work and determining the loss when an abnormality occurs during the process and minimizing the loss.

[Structure of the Invention] (Means for Solving the Problem) The present invention is designed to minimize the influence on the winding even if an abnormal work occurs during the winding work of the winding on site. An accelerometer is attached to the metal fitting to predict and diagnose abnormalities inside the winding.

(Operation) In this way, if an abnormal operation such as a collision during a gust of wind or an abnormal operation such as sudden suspension is detected, the abnormality received by the winding can be detected by the accelerometer attached to the winding metal fitting and the diagnosis can be made from the measured value. It is possible to determine abnormality without disassembling the winding.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing a structure of a winding unit to be assembled on site according to the present invention and a state in which the winding unit is lifted. Two or more windings 1 are protected by inner and outer insulating cylinders 2a and 2b, and upper and lower surfaces thereof are supported or tightened by tightening plates 3a and 3b to form a winding unit 1a. Lower clamping plate 3b of winding unit 1a
A hanging metal fitting 5 attached to the hanging wire 4 is set on the lower surface of the wire, and the outer circumference of the wire 4 is bound and fixed by the bands 6a and 6b.

A three-way accelerometer 7 is attached to the hanging fitting 5.

Further, a wire guide 8 for stabilizing the suspension wire 4 is attached above the winding unit 1a, and the wire 4 is hung up by being hooked on a hook 9 of a crane or the like.

FIG. 2 is a view showing the outer appearance of the winding unit structure of the present invention. In order to ensure the stability of the winding unit 1a, the vertical tightening tool 10 is attached to the outer peripheral portions of the upper and lower tightening plates 3a and 3b of the winding.

In this way, two or more hanging metal fittings 5 of the winding unit 1a assembled on site are set on the lower surface of the lower tightening plate 3b of the winding to measure stability during lifting. The hanging fitting 5 or the wire 4 and the winding outer peripheral insulating cylinder 2b are fixed by a band or the like, and the winding 1 is held against a horizontal load generated during the lifting operation. Further, the wire guide 8 is arranged above the upper tightening plate 3a of the winding wire to prevent shaking during lifting and hanging operations.

The stability of the winding weight is sufficient for the load in the vertical direction, but the stability is further improved by attaching the vertical tightening tool 10 to the outer peripheral portions of the tightening plates 3a and 3b above and below the winding 1. Can be improved.

By adopting the hoisting device having the winding unit 1a configuration and the accelerometer 7 described in the above embodiment, the wire hoisting work in the on-site assembly is stabilized to improve quality, and abnormalities occur during the wire hoisting work. Even in the case of occurrence of the error, since the accelerometer 7 is attached to the lifting metal fitting 5, the abnormality in the winding can be predicted and determined, and the loss at the time of the abnormality can be minimized.

FIG. 3 shows the accelerometer 7 on the upper tightening plate 3a of the winding unit 1a.
The above embodiment shows the same effect as when the hanging fitting 5 is mounted.

The same applies when the accelerometer 7 is attached to the lower tightening 3b.

[Effects of the Invention] As described above, according to the present invention, when two or more windings are assembled in advance and are lifted or transported as a winding unit, an accelerometer that detects vibration of the winding unit is attached to the hanging metal fitting. It is possible to predict and determine the presence or absence of an abnormality inside the winding without disassembling the abnormality during the lifting work on site, and it is possible to minimize the loss during assembly.

[Brief description of drawings]

FIG. 1 is a sectional view of a winding unit showing an embodiment of the present invention in a state in which the winding unit is lifted by a hanging bracket,
FIG. 3 is a front view thereof, and FIG. 3 is a front view showing another embodiment of the present invention. 1 ... Winding, 1a ... Winding unit 2a ... Inner insulating cylinder, 2b ... Outer insulating cylinder 3a ... Upper tightening plate, 3b ... Lower tightening plate 4 ... Wire, 5 ... Hanging metal fitting 7 ... Accelerometer, 8 ... Wire Guide 9: hooks for cranes

Claims (1)

(57) [Claims] 1. An acceleration for detecting vibration of a winding unit in a winding lifting device, wherein two or more windings are preassembled to form a winding unit, and the winding unit is lifted by a hanging metal fitting. A winding hoisting device characterized in that the meter is attached to a hanging metal fitting.