JPH11339923A - Arrester device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the fitting/removing work of an oil arrester by forming an arrester fitting section and an electric apparatus component into a flange connection structure. SOLUTION: An arrester fitting section is fitted to an electric apparatus component 2 via flange connection, and an in-oil arrester 4 is fitted to an arrester device 11. A contact piece 5, a shield 6 and an insulating tube 7 are fitted below the oil arrester 4 in the arrester device 11. An electric wire 9 electrically connects a neutral point electric wire 8 and the shield 6 via an insulating partition plate 15 such as an insulating spacer fitted with a tulip contact 12 requiring no manual work for connecting or cutting off an electric wire. When an electric apparatus is to be disassembled and transported, the electric apparatus component 2 and the arrester device 11 are separated at flange sections, and covers are fitted to the flange sections respectively. Insulating oil or nitrogen gas is filled in the arrester device 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for an oil-in-oil arrester attached to electric equipment.

[0002]

2. Description of the Related Art An arrester may be connected to a neutral point of electric equipment in order to protect the neutral point from abnormal voltage.
As an arrester for protecting the neutral point, there is an arrester in oil. Since the arrester in oil dislikes moisture, it is placed in a container filled with insulating oil or nitrogen gas. When installing and removing this in-oil arrester from electrical equipment,
It is necessary to complete the work within the predetermined air exposure allowable time and fill the container with the oil arrester with insulating oil or nitrogen gas.

FIGS. 5 and 6 show a conventional structure for mounting an arrester in oil in a state in which electric equipment is assembled. FIG. 5 is a perspective view showing an example of a conventional structure for mounting an arrester in oil in an electric device assembled state, and FIG. 6 is a sectional view of FIG. In FIG. 5, an arrestor mounting portion 3 is mounted on an electric device component 2 mounted on the electric device 1 by a welding structure, and the internal space is directly connected. Further, the arrestor 4 in oil is mounted so as to be inserted from above the arrestor mounting portion 3. In FIG. 6, a contact 5, a shield 6, and an insulating tube 7 are attached to a lower portion of the oil arrester 4, and a neutral point wire 8 and a shield 6 inside the electric device part 2 are connected by a wire 9. Have been. In this electric device assembly state, the electric device component 2 and the arrester mounting portion 3
Is filled with insulating oil or nitrogen gas.

FIGS. 7 and 8 show a conventional structure for mounting an arrester in oil in a state where electric equipment is disassembled and transported. FIG. 7 is a cross-sectional view illustrating an example of a conventional electric device component in a state where the electric device is disassembled and transported, and FIG. 8 is a cross-sectional view illustrating an example of a transport package of the arrester in oil. As can be seen by comparing FIG. 6 and FIG. 7, in the electric device disassembled and transported state (FIG. 7), the electric device component 2
Means that the arrester 4 in oil, the contact 5, the shield 6, the insulating tube 7, and the electric wire 9 are removed. This is to prevent the arrestor 4 in oil from being continuously exposed to the air during the work by introducing air into the electric equipment part 2 during the work of removing the electric equipment part 2 from the electric equipment 1. In FIG. 8, the arrester transport container 10 is prepared separately from the electric equipment and is used for transporting the arrester 4 in oil. At the time of transportation, the oil arrester 4 is attached to the transportation container 10 and is transported separately from the electric equipment component 2 in a state of being filled with insulating oil or nitrogen gas. Further, after transportation, it is assembled again as shown in FIG.

[0005]

However, in the above-mentioned transportation work, the work of mounting and removing the arrester 4 in oil, the work of mounting, removing, and adjusting the mounting of the contact 5, the shield 6, the insulating tube 7, and the electric wire 9 are performed. Such an operation is required, and the arrestor 4 in oil may come into contact with air and absorb moisture by an amount of time required for the operation.

Accordingly, an object of the present invention is to provide an arrester 4 in oil.
It is an object of the present invention to simplify the work of attaching and detaching.

[0007]

The present invention is characterized in that the arrestor mounting portion and the electrical equipment component have a flange connection structure so that they can be transported separately from the electrical equipment component without removing the arrester in oil. It is.

[0008]

Embodiments of the present invention will be described with reference to the drawings. FIGS. 1 and 2 show a mounting structure of an arrester in oil in an assembled state of an electric device according to an embodiment of the present invention.
FIG. 1 is a perspective view of an electric device according to the present invention in an assembled state, and FIG.
FIG. In FIG. 1, an arrestor mounting portion 3 is mounted on an electric device component 2 by flange connection.
The arrester 4 in oil is attached to the arrester device 11. In FIG. 2, a contact 5, a shield 6, and an insulating tube 7 are attached to a lower portion of the oil arrester 4 inside the arrester device 11. Further, the electric wire 9 connecting the neutral point electric wire 8 and the shield 6 is electrically connected via an insulating partition plate 15 such as an insulating spacer to which the tulip contact 12 is attached without connection and disconnection of the electric wire. It is connected.

FIGS. 3 and 4 show the mounting structure of the arrester in oil in the state of disassembled and transported electric equipment according to the embodiment of the present invention. FIG. 3 is a cross-sectional view of the electric device component 2 in the electric device disassembled and transported state of the present invention, and FIG. 4 is a cross-sectional view of the arrester device 11. At the time of dismantling and transporting the electrical equipment, the electrical equipment component 2 and the arrester device 11 are separated at the flange portion, and the lids 13 and 14 are attached to the flange portion, respectively. The electric wire 9 is cut off at the tulip contact 12.
As can be seen by comparing FIG. 2, FIG. 3, and FIG. 4, during disassembly and transportation of the electric equipment, the arrestor device 11 is detached from the electric equipment part 2 and is transported by filling the flange portion with the lid 13 and then filling with insulating oil or nitrogen gas. It is possible. Also, when assembling the electrical equipment, the cover is attached by removing the lid 13 of the flange portion and connecting the flange, so that the oil arrester is not exposed to the air. Since the electric wires 9 are connected by the insulating partition plate 15 on which the tulip contacts 12 (male, female) are installed, the electric device side can also maintain the airtightness in the tank and is not exposed to the air.

[0010]

As described above, according to the present invention, the work of the oil arrester 4 in the disassembly and assembly work of the electric equipment is the work of attaching and detaching the arrester device 11, so that the contacts 5, shields 6, The work of attaching, detaching, and adjusting the mounting of the insulating cylinder 7 and the electric wire 9 can be eliminated, and the work can be simplified. In addition, since the arrester does not come into contact with air, moisture is not absorbed and the reliability of insulation is improved.

[Brief description of the drawings]

FIG. 1 is an exemplary perspective view of an electric apparatus in an assembled state according to an embodiment of the present invention;

FIG. 2 is an exemplary sectional view of an electric device in an assembled state according to the embodiment of the present invention;

FIG. 3 is a cross-sectional view of an electric device part in an electric device disassembled and transported state showing an embodiment of the present invention.

FIG. 4 is a cross-sectional view of the arrester device in an electric device disassembled and transported state, showing one embodiment of the present invention.

FIG. 5 is a perspective view showing an example of a conventional electric apparatus in an assembled state.

FIG. 6 is a cross-sectional view illustrating an example of a conventional electric apparatus in an assembled state.

FIG. 7 is a cross-sectional view of an electric device part in an electric device disassembled and transported state showing an example of the related art.

FIG. 8 is a cross-sectional view of an arrestor transport container in an electric device disassembled transport state showing an example of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric equipment 2 Electric equipment parts 3 Arrester mounting part 4 Oil arrester 5 Contact 6 Shield 7 Insulation cylinder 8 Neutral point electric wire 9 Electric wire 10 Arrester transport container 11 Arrester device 12 Tulip contact 13 Lid 14 Lid 15 Insulating partition plate

Claims (1)

[Claims] 1. An arrestor in oil and an arrestor storage box provided with a flange directly connected to the electric equipment, and are electrically connected to the electric equipment through a partition plate separating the arrestor storage box and the electric equipment. An arrester device characterized in that: