JPS6273610A - Transformer - Google Patents

Abstract

PURPOSE:To conserve space and to make the size of the apparatus small by providing an oil container between the strengthening beam on a main tank cover. CONSTITUTION:An oil container is constructed by utilizing dead space between strengthening beams 7. Transformer oil 13 is spouted by a pressure discharge device 4 activated through a pressure discharge pipe 5 by means of increase in the pressure within the main tank is contained in an oil container 10 provided between cover strengthening beams 7 through an extension pipe 6. Thus, another oil container 11 will not be needed, and the extension pipe 6 is shortened. If the piping to the oil container 11 is connected with pits, requiring no pit facilitats assembly and installation work. Further, it is possible to immediately reoil through a degassing device if the spouting of the transformer oil 13 is not caused by an internal accident, thereby providing a space conserving and small-sized transformer and allowing rapid restoration work.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a transformer with improved oil treatment when oil is spouted from the transformer.

[Technical background of the invention and its problems]

Transformers are generally equipped with a pressure relief device to prevent tanks and the like from being destroyed due to an increase in internal pressure that occurs in the event of an internal accident. But i & [location.

Depending on the installation conditions, etc., there is a possibility that the disposal of oil spouted through the pressure relief device may pose an environmental pollution problem. For this reason, the current solution is to install an oil storage tank in a location separate from the transformer tank to store the spouted transformer oil. The structure of a transformer equipped with this type of oil storage tank is as shown in FIG. 6, it is connected to the oil storage tank 11. A transformer equipped with such a separate oil storage tank 11 requires a site because it is installed separately from the main tank 1. In addition, the pressure relief device 4
[oil storage tank]] 1 becomes longer, and the structure such as support becomes complicated. Further, there are drawbacks such as it takes time to relubricate during restoration work, which may cause problems with power supply.

[Purpose of the invention]

An object of the present invention is to eliminate the above-mentioned drawbacks and provide a space-saving and compact transformer by installing an oil storage tank in a transformer tank.

[Summary of the invention]

In order to achieve the above object, the present invention is a transformer equipped with an oil storage tank, which is characterized in that the oil storage tank is installed between reinforcing beams on the main body tank cover to save space and downsize. It is.

[Embodiments of the invention]

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

In FIGS. 1 and 2, a reinforcing beam 7 is arranged on the transformer tank cover 14 so that it can withstand the vacuum external pressure caused by evacuation during insulating oil injection and the tank internal pressure during transformer operation. In the present invention, the dead space between the reinforcing beams 7 is used to construct an oil storage tank. Due to the increase in oil pressure inside the main tank, the pressure relief device @ 4 is released via the pressure relief pipe 5.
The transformer oil 13 spouted out by operating the transformer is stored by the extension pipe 6 in the oil storage tank 10 provided between the cover reinforcing beams 7, so a separate oil storage tank 11 is not required, and the extension pipe 6 is If the length of the transformer oil 13 is shortened and the oil storage tank 11 is connected by a pit, assembly and construction will be easier because no pit will be needed6.Furthermore, if the spout of transformer oil 13 is not due to an internal accident, it will be removed through the degassing device. Re-lubrication can be carried out as soon as possible, and restoration work can be carried out quickly.

〔Effect of the invention〕

As described in F below, 1. According to the present invention, in a transformer equipped with an oil storage tank, the oil storage tank is installed between reinforcing beams on the tank cover, etc., thereby saving space, being compact, and enabling quick recovery work. You can get the equipment.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view, and FIG. 3 is a side view of a conventional embodiment. 1... Main tank, 2... Bushing 3.
...Conservator, 4...Pressure relief device 5...Pressure relief pipe, 6...Extension pipe 10, 11...Oil storage tank, Agent: Patent attorney Noriyuki Chika Hirofumi Mitsumata

Claims (1)

[Claims] A transformer equipped with a pressure relief device, characterized in that an oil storage tank for storing insulating oil spouted from the pressure relief device due to rising inside the tank is provided between the reinforcing beams of the tank body cover.