JPH0628169Y2 - Hygroscopic respirator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a hygroscopic breathing apparatus used for equipment having a space containing air that expands and contracts, such as oil-filled electric equipment such as a transformer or a reactor. It is related to vessels.

[Conventional technology]

An example of a conventional hygroscopic respirator of this kind is shown in FIG.

In the figure, reference numeral (1) is a space side flange provided on a space side connecting pipe (2) communicating with a space containing air such as a conservator (not shown), and (3) is a hygroscopic respirator main body The upper part of the hygroscopic respirator body (3) is connected to the space side flange (1) and is attached to the upper part.
(4) and a hygroscopic agent input port (6) for feeding the hygroscopic agent (5),
A lower part is equipped with a filter (7) inside and an oil bottle (8) that is configured to be removable, and is provided on a side surface of a device (e.g., a transformer (9) that is an oil-filled electrical device). It is fixed to the metal fitting (10).

Such a hygroscopic respirator uses an open type conservator or a rubber bag type conservator as a method for preventing deterioration of insulating oil in oil-filled electrical equipment. The hygroscopic agent deteriorates in proportion to the breathing volume, but this invention relates to the structure for replacing the deteriorated hygroscopic agent, and is directly related to the hygroscopic action of the hygroscopic respirator. Therefore, only the method of replacing the hygroscopic agent will be described below.

To replace the hygroscopic agent (11), loosen the set screw (12) of the oil bottle (8) at the bottom of the hygroscopic respiratory body (3), turn the oil bottle (8) to remove it, and then remove the oil bottle (8). When the filter (7) screwed into the mounting seat (13) of (8) is removed, the moisture absorbent absorbs moisture from the outside air due to breathing action and the deteriorated hygroscopic agent (11) falls off. ) Is installed below and the deteriorated hygroscopic agent (11) is collected.

If the hygroscopic agent (11) deteriorated in this way is removed,
Next, after assembling the filter (7) and the oil bottle (8) in the reverse order of disassembly, open the moisture absorbent inlet (6) at the top of the moisture absorbent breather body (3) and open a new moisture absorbent (5). After adding the
Close (6) and complete the hygroscopic agent replacement work.

[Problems to be solved by the invention]

Conventional hygroscopic agent replacement work is performed according to the above procedure, so the oil bottle (8) provided at the bottom of the hygroscopic respiratory body (3) must be disassembled and reassembled on site. Not
When taking out the deteriorated hygroscopic agent (11), it may be scattered around, so it is necessary to cure it sufficiently.When adding a new hygroscopic agent (5), lift the hygroscopic agent (5) to a high position. In addition, there is a problem that it is necessary to work for a long time in a careful and unnatural posture because the inlet for the hygroscopic agent is small.

This invention was made in order to solve the above problems, and does not require disassembling and reassembling work when replacing the hygroscopic agent, and greatly shortens the work time. An object of the present invention is to obtain a hygroscopic respirator that can be simplified easily.

[Means for solving problems]

The hygroscopic respirator according to the present invention includes a space-side connecting pipe that communicates with a space that contains air that expands and contracts, and an oil-vessel-side connecting pipe that communicates with an oil pot that is provided below the hygroscopic respirator. A hygroscopic agent case, which is fixed to the side surface of the device, is equipped with two hygroscopic agents, and has two connection ports that are airtightly connected to the space-side connecting pipe and the oil bottle-side connecting pipe, and the hygroscopic agent case. A mounting guide installed below the desiccant case to be placed and mounted, and an upper plate installed above the desiccant case whose one end is rotatably fixed to press the desiccant case, a mounting guide and an upper plate. A fixing device for fixing the moisture absorbent case to each other by fixing them together, and a tightening device for attaching and removing the space side connection pipe and the oil bottle side connection pipe and each connection port with one touch.

[Action]

Since the hygroscopic respirator according to the present invention is configured as described above, in order to replace the deteriorated hygroscopic agent, the two connection ports of the hygroscopic agent case are connected from the space side connecting pipe and the oil bottle side connecting pipe. After the dissociation, the fixing device is released, the upper plate is removed from the upper part of the hygroscopic agent case, and then the hygroscopic agent case is slid on the mounting guide and pulled out.

Then, place the hygroscopic agent case filled with new hygroscopic agent on the mounting guide and push it in to attach the connection port to the space side and oil bottle side connecting pipes airtightly, and at the same time, use the upper plate and the fixing device to The case is attached and fixed, and the replacement is completed.

〔Example〕

The present invention will be described below with reference to the drawings showing an embodiment thereof.

In FIG. 1 showing the first embodiment, a space side flange
(1), space side connecting pipe (2), moisture absorbent (5), (11), filter
(7), oil jar (8), equipment such as transformers that are oil-filled electrical equipment
(9), the set screw (12), and the mounting seat (13) are all the same as those in the conventional hygroscopic respirator.

Next, the code (21) is attached to the side of the transformer (9),
Support fittings in which the space side connecting pipe (2) and the auxiliary connecting pipe (22) communicating with the space side connecting pipe (2), the oil jar (8) and the auxiliary connecting pipe (23) communicating with this are fixed And the auxiliary connecting pipe (22) (23)
A space side connection flange (24) and an oil bottle side flange (25) are provided at each end of the.

Reference numeral (26) is a hygroscopic agent case in which the hygroscopic agents (5) and (11) are filled, and a plurality of air flow partition plates provided inside to extend the flow path of the gas to be absorbed. (27) is provided, and the moisture absorbent inlet / outlet (28) for charging and discharging the moisture absorbent (5) (11) is provided, and the space side connection flange
(24) and the connection ports (31) (32) of the two connection pipes, each of which has flanges (29) (30) airtightly attached to the oil bottle side connection flange (25), respectively. Reference numeral (33) is a case handle for handling the moisture absorbent case (26).

Next, the reference numeral (34) is a support metal fitting (2) attached to the transformer (9).
1) is a mounting guide for mounting and supporting the moisture absorbent case (26), and (35) is an upper plate whose one end is rotatably attached to the support metal fitting (21). At this point, the moisture absorbent case (26) placed on the mounting guide (34) is pressed from above to fix the moisture absorbent case (26). A fixing bolt (3) that is rotatably attached and whose tip engages with the end of the upper plate (35) when it rotates and moves along the moisture absorbent case (26).
6) and a butterfly nut (37) that is screwed to the end of the fixing bolt (36) and clamps and fixes the moisture absorbent case (26) through the upper plate (35). Is done. The mounting guide (34) is provided with a guide portion (39) that serves as a guide when the hygroscopic agent case (26) is attached and detached, and the butterfly nut (37).
Are configured so as not to fall off from the ends of the fixing bolt (36). The reference numeral (40) is the space side connection flange (24).
And a flange (29), and an oil pot side connecting flange (25) and a flange (30) are attached and detached by one-touch.

In the hygroscopic respirator of the present invention constructed as described above, when the oil level in the conservator drops, the oil jar (8) and the filter (7)
To move the moisture absorbent case (26) along the airflow partition plate (27) in the direction of the dotted line to absorb the moisture of the outside air and suck the dry air into the conservator. When the oil level in the conservator rises, the air in the conservator is discharged through the reverse route.
When the moisture absorbent (5) deteriorates due to this breathing action, the moisture absorbent case (26) filled with a new moisture absorbent (5) is brought to the site, and the moisture absorbent case (11) containing the deteriorated moisture absorbent (11) is taken. 26) Loosen the butterfly nut (37), remove the fixing bolt (36), release the one-tatch tightening device (40), and remove.

Next, slide the new hygroscopic agent case (26) along the guide part (39) provided on the mounting guide (34) onto the mounting guide (34) and push it to the end, and the one-tatch tightening device (40). Tighten the flanges (29) (30) directly attached to the moisture absorbent case (34) with the connecting flanges (24) (25) of the auxiliary connecting pipes (22) (23).
Connect it airtightly with (40), rotate the fixing bolt (36) to raise it, and turn the butterfly nut (37) at its tip to rotate the moisture absorbent case (2
6) is fixed and the replacement work of the hygroscopic agent is completed.

In addition to the first embodiment described above, as in the second and third embodiments shown in FIGS. 2 and 3, the flanges (29) (30) for connecting the moisture absorbent case should be attached vertically. However, the same effect as that of the first embodiment can be obtained, and as shown in the fourth embodiment of FIG. 4, two or more hygroscopic respirators (41) according to the present invention are provided through the switching valve (42). By combining them in parallel and keeping one of them as a regular spare, it is possible to switch by a valve operation, and it is possible to obtain the effect that the urgency of replacing the hygroscopic agent can be alleviated. Further, FIG. 5 showing the fifth embodiment shows that the connection ports (31) and (32) of the hygroscopic agent case are made into double pipes to be one location.

Although the oil-filled electrical equipment has been described in each of the above-described embodiments, the same effect as that of the above-described embodiment can be obtained even when the oil-filled electrical equipment is used in equipment that needs to keep its inside dry.

[Effect of device]

As described above, according to the present invention, since the hygroscopic agent can be replaced for each hygroscopic agent case, (1) there is no need to disassemble and reassemble the hygroscopic breathing apparatus main body, and the work is easy and easy. (2) There is no risk of the hygroscopic agent dissipating (3) The time required to replace the hygroscopic agent on the site is greatly reduced (4) The work in an unnatural posture is eliminated (5) It is easy to make a reference for the replacement (6) The moisture absorbent case can be connected to the space-side connecting pipe and the oil bottle-side connecting pipe with one-touch by the tightening device, and the entire moisture-absorbent case can be easily attached between the mounting guide and the upper plate by tightening the fixing device. Since it is fixed to, the hygroscopic agent replacement work time can be further shortened, and many effects such as the airtightness of the hygroscopic agent case can be easily maintained can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of the first embodiment according to the present invention, and FIG.
3 and 4 are longitudinal sectional views of the second and third embodiments of the present invention,
FIG. 4 is a schematic configuration diagram of the fourth embodiment, FIG. 5 is a vertical sectional view of the fifth embodiment, and FIG. 6 is a vertical sectional view of a conventional hygroscopic breathing apparatus. (1) …… Space side flange, (2) …… Space side connecting pipe, (5) (1
1) …… Hygroscopic agent, (8) …… oil jar, (9) …… equipment (oil-filled electrical equipment, transformer), (21) …… supporting metal fittings, (22) (23) …… auxiliary connecting pipe , (24) …… Space side connection flange, (25) …… Oil bottle side connection flange, (26) …… Hygroscopic agent case, (29) (30) …… Flange, (31) (32) …… Connection Mouth, (34) …… Mounting guide, (35)
…… Upper plate, (38) …… Fixing device, (40) …… Tightening device. In each figure, the same reference numerals indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Toshihiko Fujiwara 651 Tenwa Tenwa, Ako City, Hyogo Prefecture Mitsubishi Electric Corporation Ako Works (72) Creator Susumu Kawanaka 651 Tenwa, Ako City Hyogo Prefecture Mitsubishi Electric Corporation Ako Works (56) Bibliography Shou 58-91425 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A space-side connecting pipe and an oil-vessel-side connecting pipe which are fixed to a side surface of the device and communicate with a space in the device and an oil bottle having air that expands and contracts, respectively, and fixed to the side face of the device. And a mounting guide that is mounted on the mounting guide and has two connection ports that are airtightly connected to the space-side connecting pipe and the oil jar-side connecting pipe, A hygroscopic agent case filled with a hygroscopic agent, an upper plate having one end rotatably disposed above the hygroscopic agent case and pressing the hygroscopic agent case, and the mounting guide and the upper plate are mutually tightened. Moisture absorption characterized by comprising a fixing device for fixing the moisture absorbent case, a tightening device for attaching and detaching the space side connecting pipe and the oil bottle side connecting pipe and each connection port with one touch Respiratory organs.