JPH0230820Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This invention relates to a breathing apparatus for a transformer.

(Conventional technology) Generally, several to 10 small transformers of about 200 to 500 KVA are installed in a substation room (transformer) installed in a factory building that uses electricity, and the total for each building is one. It is not uncommon for a factory to have 200 to 300 small transformers installed. Conventionally, in these large number of transformers, a moisture absorbing respirator 9 has been attached to the breathing port 2 of each transformer 1, as shown in FIG. 6 is a partition wall of the substation room 5 made of wire mesh.

(Problems to be solved by the invention) However, in the moisture absorbing respirator 9, it is necessary to inspect and replace the built-in moisture absorbent such as silica gel.
For this purpose, daily patrol inspections and periodic inspections had to be carried out for each of the many transformers, which required a great deal of effort and time. In addition, these maintenance tasks must be performed in a substation room close to each transformer, so there is a risk of electric shock.In particular, it is better to replace the moisture absorbent during a power outage, so it should be avoided only during holidays. They had to use the opportunity of the recent power outage to mobilize personnel.

This invention solves the above-mentioned conventional problems and aims to provide a breathing device for a transformer that can be easily maintained in a short period of time and reduces maintenance costs. .

(Means for solving the problem) However, the transformer breathing device devised by Lever connects each breathing port of a plurality of transformers to a collecting pipe, and incorporates a moisture absorbent into the end of the collecting pipe. This is a transformer breathing device that is equipped with a moisture absorption breathing device.

(Function) In the transformer breathing apparatus of this invention, the breathing action of a plurality of transformers is performed through one collecting pipe and a hygroscopic breathing device attached to the end of the collecting pipe. External moisture is prevented from entering each transformer.

(Example) An example of this invention will be described below with reference to FIG.

In the figure, the same parts as in Fig. 2 are given the same symbols as in Fig. 2. A set of about 3 to 10 transformers is made up of a set, and the breathing of each transformer 1 making up this set. The port 2 is connected to one collecting pipe 4 via a branch pipe 3. The collecting pipe 4 extends to the outside of the partition wall 6 of the substation room 5, and a moisture absorbing respirator 7 is installed at the end of the collecting pipe 4.
is installed. This hygroscopic respirator 7 is a well-known type containing a hygroscopic agent such as silica gel, but since one is provided for a plurality of transformers, it is preferable to select one with a large hygroscopic capacity. Furthermore, it is more preferable to use a container for the moisture absorbent with separate inlets and outlets for the moisture absorbent, since the moisture absorbent can be replaced without removing the container.

In the breathing apparatus 8 having the above configuration, one moisture absorption breathing apparatus 7 dehumidifies the intake air for a plurality of transformers 1. Therefore, daily patrol inspections and periodic inspections for checking and replacing moisture absorbents are carried out at each substation room 5.
Since it is only necessary to perform maintenance on one or a few hygroscopic respirators 7 at each time, the maintenance effort and time can be greatly reduced to one-tenth to one-tenth of the conventional maintenance effort.

In addition, in this embodiment, the moisture absorbing respirator 7 is installed outside the substation room 5, so maintenance work can be safely performed at a location sufficiently far away from the transformer 1, and there is no need to shut off the power when replacing the moisture absorbent. It has the advantage that the moisture absorbent can be replaced at any desired time while the transformer is energized, which is extremely convenient. , similar effects can be obtained.

This invention can also be applied to breathing apparatus for transformers installed in substations and substations of buildings and other facilities other than factories.

(Effects of the invention) As explained above, according to this invention, maintenance of the breathing apparatus can be easily performed in a short time.
This not only makes it possible to reduce maintenance costs, but also contributes to improving the safety of maintenance work.

[Brief explanation of the drawing]

FIG. 1 is a front view of a breathing device for a transformer showing an embodiment of this invention, and FIG. 2 is a front view showing an example of a conventional breathing device for a transformer. 1...Transformer, 2...Breathing port, 3...Branch pipe, 4
...collecting pipe, 7...moisture-absorbing respirator, 8...respirator.

Claims (1)

[Scope of utility model registration request] Connect each breathing port of multiple transformers to a collecting pipe,
A breathing device for a transformer, characterized in that a hygroscopic breathing device containing a built-in hygroscopic agent is attached to an end of the collecting pipe.