JPS5842608B2 - Diaphragm type conservator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a device for thoroughly extracting excess air remaining inside the lower side of the diaphragm (the side facing the oil) of a diaphragm type conservator to the outside of the conservator. This relates to a diaphragm type conservator that collapses.

The gist of this invention is that the main body side wall portion 2 (air vent 7
A semi-cylindrical curved shape having an air vent pipe which is perforated through L and has an air reservoir interposed outside the main body so as to communicate with the air vent hole, and which is close to the inside of the main body side wall and has an open upper end. An oil plate is provided in communication with the air vent hole so that its upper end opening is close to the lower surface of the diaphragm of the diaphragm attachment part, and an air pressure inlet valve for pressurizing air is provided on the side wall or top of the main body above the diaphragm attachment part. , the diaphragm is pressed against the oil side by air pressure,
The structure of the diaphragm type conservator includes a device for extracting excess air remaining inside the lower surface of the diaphragm.

As mentioned above, this invention has an air vent hole drilled in the side wall of the main body and an air vent pipe with an air reservoir interposed outside the main body in order to sufficiently extract the residual surplus air inside the lower surface side of the diaphragm conservator. is connected to the air vent hole, and an oil shield plate with an open upper end is provided close to the bottom surface of the diaphragm mounting part at a location close to the side wall inside the conservator body, and the air on the bottom side of the diaphragm inside the conservator body is Pressurize the upper surface of the diaphragm by applying air pressure from the air pressure valve so that the diaphragm gathers near the mounting part around the diaphragm, press the diaphragm against the oil side, remove the wrinkles, walnuts, etc. from the diaphragm, and remove the air from the pipe. The structure is such that the residual air can be easily and sufficiently removed after the removal.

In order to remove residual excess air from the underside of the diaphragm in conventional diaphragm-type conservators, the position of the air bleed pipe may not be close to the diaphragm attachment part due to welding technology, or air may be vented by suction. Because the diaphragm is exclusively used for air removal, it is inevitable that the diaphragm will wrinkle or walnut, resulting in an irregular shape.For this reason, it is extremely difficult to completely remove air, and a considerable amount of air remains in the irregularly shaped part. The reality was that it remained.

That is, as shown in FIG. 1, which shows a conventional air venting device, an air vent pipe 4 is installed on the side wall of the lower surface side of the diaphragm 2 installed in the conservator body 1, which is located above the oil surface of the oil 3.
The excess air a is removed from the air vent pipe 4 as the oil moves through the oil passage 6 provided in communication with the inside of the transformer 5. In this case, the air vent pipe 4 is located near the diaphragm 2. Since it is located away from the mounting part 7 of the conservator, it is not in close proximity to the diaphragm mounting part 7, so a considerable amount of surplus air a always remains on the lower surface side of the diaphragm 2 in the conservator body 1, and the residual air causes an oxidizing effect on the oil. Concerns such as the possibility of adverse effects cannot be avoided.

The purpose of this invention is to eliminate and improve the defects caused by such conventional devices by simple means,
If we explain the embodiment shown in the drawings, Fig. 2 is part 1.
FIG.
An air vent hole 8 is provided in the lower side wall portion, and an air reservoir 9 communicating with the air vent hole 8 is provided on the outside.
An air vent pipe 10 is provided on the outer surface of the air vent tube 10 to communicate with the air vent hole 8.

This air vent pipe 10 can be opened and closed as appropriate.

Next, approach the inside of the side wall of the main body 1 and insert the semi-cylindrical curved oil shield plate 11, which has an open upper end, into the air vent hole 8 so that the upper end opening 12 is very close to the lower surface of the diaphragm of the diaphragm mounting part 7.
Provided in communication with.

Figure 3 shows an enlarged view of the air vent part in Figure 2.
Further, FIG. 4 is a printed view for explaining the air venting portion.

FIG. 5 and FIG. 6 show other embodiments.
The semi-cylindrical curved oil shield plate 11 shown in the figure is provided as a semi-cylindrical curved oil shield plate 11' that is short enough to cover the inside of the air vent hole 8, and the other structure is the same as that in Figure 2. .

In addition, in FIG. 2 and other figures, 13 indicates the diaphragm attachment part 7.
The flange 14 is also a backing.

In order to sufficiently and completely remove residual excess air from the lower surface of the diaphragm 2, an air pressure valve 15 is provided at the top (or side wall) of the conservator body 1 above the diaphragm 2, as shown in FIG. This makes it possible to pressurize air, apply pressure to the upper surface of the diaphragm 2 using air pressure, and press it against the oil 3 side without causing wrinkles or walnuts in the diaphragm 2, while allowing excess air to be sufficiently evacuated from the air vent pipe 10. Make it.

In the device having the above structure, first, when oil 3 is introduced into the conservator body 1, the surplus air a under the diaphragm 2 passes through the air vent hole 8, the air reservoir 9, and the air vent pipe 10 into the conservator body 1. It is discharged to the outside.

Subsequently, when oil 3 is poured into the conservator body 1, most of the excess air a is discharged from the air vent pipe 10 to the point where the oil level of the oil 3 is very close to the diaphragm peripheral attachment part 7, and the air vent pipe When the oil 3 begins to come out from the air vent pipe 10, the air vent pipe 10 is closed, and then oil is added to the specified position.

The main body 1 also communicates with the air vent hole 8 of the conservator main body 1.
A semi-cylindrical curved oil shield plate 11° 11' is provided inside the side wall of the diaphragm 2, and its upper end opening 12 opens upward in the lower part very close to the attachment part 7 of the diaphragm 2. Because of this, it is possible to sufficiently remove excess air while avoiding the ingress of oil.

Furthermore, since the air vent pipe 10 is connected to the air vent hole 8 through the air reservoir 9, the air is vented by pressure first, and then
Once the air vent pipe is closed, lubrication is performed again, and then the little remaining air is removed by pressure into the air reservoir 9 along with the oil.
By discharging the air into the main body 1, the air can be sufficiently removed from the inside of the main body 1 without any remaining air.

As described above, according to the present invention, by simply performing a simple process on the conservator body 1, air pressure is used to fully absorb the residual surplus air a after oil injection on the oil side of the lower surface of the diaphragm 2 into the conservator body. 1, it is possible to prevent the oxidation of the transformer oil due to residual surplus air a, thereby preventing problems caused by oxidation.

In each of the drawings showing the above-mentioned embodiments, the most commonly known structures such as the structure of the diaphragm conservator and the related mechanism with the device for indicating the vertical movement position of the diaphragm are omitted, and the structure of the diaphragm conservator is omitted. This is merely a description of the specific structure of this invention to achieve a specific purpose.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing an example of a diaphragm type conservator provided with a conventional air vent pipe, FIG. 2 is a longitudinal sectional front view showing an embodiment of a diaphragm conservator according to the present invention, and FIG.
FIG. 4 is a partially cutaway enlarged front view of the figure shown in FIG. 3, FIG. 5 is a partially cutaway longitudinal front view showing another embodiment, and FIG. This is a partially cut-away perspective view of the one shown in the figure. 1... Conservator body, 2... Diaphragm, 3... Oil, 4... Air vent pipe, 5...
...Transformer, 6...Oil passage, a...
・Excess air, 7... Mounting part around the diaphragm, 8.
...Air vent hole, 9...Air reservoir, 10...
... Air vent pipe, 11, 11' ... Semi-cylindrical curved oil shield plate, 12 ... Upper end opening, 13 ...
...Flange, ...Backing, 15...
・Air pressure valve〇14...

Claims (1)

[Claims] 1. An air vent hole is provided in the side wall of the main body below the diaphragm attachment part of the diaphragm conservator, and an air vent pipe with an air reservoir interposed outside the main body is connected so as to communicate with the air vent hole, A semi-cylindrical curved oil shield plate with an open upper end close to the inside of the side wall of the main body is provided so as to communicate with the air vent hole so that the upper end opening is close to the lower surface of the diaphragm of the diaphragm mounting part, and the diaphragm An air pressure valve is installed on the side wall or the top of the main body above the mounting part, and the air pressure pushes the diaphragm toward the oil side. A separate rod type conservator uses a device to remove excess air remaining inside the bottom surface of the diaphragm. .