JPS585331Y2 - Oil-immersed storage battery device - Google Patents

Description

[Detailed description of the invention] This invention can be used in external liquids such as underwater or the sea.
This relates to the improvement of so-called oil-immersed storage battery devices used as power sources and auxiliary power sources for observation boats, submarine research vessels, and deep-sea equipment.

In this type of device, the storage battery is stored in the battery storage tank, which is filled with insulating oil to isolate it from the external liquid, and a gas vent hole is provided at the top of the upper lid of the battery storage tank, and the pressure is compensated. It has a structure in which a pressure equalization device is provided to compensate for internal pressure against changes in external pressure.

The gas generated during charging and discharging of this storage battery rises through the insulating oil, reaches the top lid of the battery storage tank, and collects around the gas vent hole provided at the top along the slope of the inside surface of the top lid. When the internal pressure becomes higher than the external pressure, the gas will be discharged from the gas vent hole into the external liquid.

However, in conventional devices of this type, when the device is swayed or tilted due to the effects of tidal currents or movements such as diving or surfacing, the gas moves back and forth along the inner surface of the top lid, and the gas flows around the gas vent hole. The problem is that the insulating oil rarely collects, and therefore, if the internal pressure becomes high, the insulating oil will be discharged, resulting in safety and reliability problems.

The present invention is to provide this type of oil-immersed storage battery device with radial ribs centered on the gas vent hole on the inner surface of the top cover of the battery storage tank, and to guide gas moving due to oscillation and tilting to the gas vent hole through the ribs. This eliminates the above drawbacks.

Hereinafter, the present invention will be explained in detail with reference to FIGS. 1 and 2 showing one embodiment thereof.

FIG. 1 is a front sectional view thereof, and FIG. 2 is a sectional view taken along the line AA' in FIG.

Reference numeral 1 denotes a storage battery, insulating oil is injected onto the electrolyte thereof, and a gas-liquid separation plug 2 is attached to the head.

. The storage battery 1 is stored in a battery storage tank 3.

A space other than the storage battery 1 in the battery storage tank 3 is filled with insulating oil 4 to isolate the external liquid 5 and the storage battery 1.

Further, a pressure compensating pressure equalizing device 6 for compensating the pressure is attached to the battery storage tank 3.

Note that 7 is a rubber bag of the pressure compensating pressure equalizing device 6, 8 is an oil hole, 9 is a rubber bag protective cover, and 10 is a water hole provided in the rubber bag protective cover 9.

Reference numeral 11 denotes a top cover of the battery storage tank which is inclined higher toward the center, and its angle of inclination is larger than the normally planned inclination angle of the device.

A gas vent hole 12 is provided at the top of the upper lid, and a gas vent equalization plug 13 is attached to the gas vent hole 12, which is activated when the internal pressure of the battery storage tank 3 becomes higher than the external pressure. .

Further, a gas collecting tube 14 is provided below the gas vent hole 12, and ribs 15 are provided radially from the gas collecting tube 14 along the inner surface of the upper lid 11 and perpendicularly to the upper lid 11.

The gas collecting cylinder 14 also has a plurality of gas passage holes 1 on its side.
6, and the gas passage holes 16 communicate the respective spaces partitioned by the ribs 15 with the inside of the gas bubble collection cylinder 14.

That is, the gas discharged from the gas-liquid separation plug 2 is transferred to the insulating oil 4.
The gas floats up inside, reaches the inner surface of the upper lid 11, rises along the slope while gathering, and passes through the gas vent 16 to form the gas collecting cylinder 1.
Enter within 4.

In addition, even if the device is shaken or tilted, the gas will remain at the rib 1.
5 and enters the gas collecting cylinder 14 without floating.

Therefore, when the internal pressure of the battery storage tank 3 becomes higher than the external pressure, the gas in the gas collecting pipe 14 is discharged from the T-shaped gas vent equalization plug 13 with priority over the insulating oil 4.

Further, FIG. 3 is a plan sectional view showing another embodiment of the present invention, and the one shown in FIGS. 1 and 2 has a rib 15 provided on the upper lid 11 parallel to the side of the battery storage tank 3. On the other hand, the third
The one shown in the figure is provided with ribs 15' diagonally on the upper lid 11' of the battery storage tank.

According to the present invention, the amount of insulating oil discharged in the battery storage tank is small, and therefore the insulating oil possessed by the pressure compensating equalization device is not consumed by discharge, so long-term operation is possible in deep seas, etc., and it is safe. It is possible to provide a highly reliable oil-immersed storage battery.

[Brief explanation of the drawing]

1 and 2 are a plan sectional view and an AA' line sectional view, respectively, showing an embodiment of the present invention. FIG. 3 is a plan sectional view showing another embodiment of the present invention.

Claims (1)

[Scope of utility model registration request] An oil-immersed type comprising a battery storage tank for storing storage batteries and filled with insulating oil, a gas vent hole provided at the top of the top lid of the battery storage tank, and radial ribs centered around the gas vent hole on the inner surface of the top lid. Storage battery device.