JPH1079216A - Multiple disconnector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disconnector which accomplishes shortening of the inter- phase dimension to be required and shrinkage of the space for installation by increasing the number of circuit contacts for increase of the number of blades. SOLUTION: A base 1 is furnished with a first and a second stationary insulators 22a and 22b, which are equipped with a first and a second stationary contacts 23a and 23b. Between the two insulators 22a and 22b, the base 1 is equipped rotatably with a first and a second movable insulators 25a and 25b, which are furnished with a first and a second blades 27a and 27b. The two blades 27a and 27b are equipped with the first moving contact 28a contacting separably with the first stationary contact 23a and a second moving contact 29a, and the second blade 27b is fitted with a third movable contacting piece 28b contacting with and separating from the second moving contact 29a and a fourth moving contact 29b contacting with and separating from the second stationary contact 23b, and when the opening and closing operation is made, the first and second movable insulators 25a and 25b are rotated in the opposite directions to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multipoint disconnector.

[0002]

2. Description of the Related Art In a conventional horizontal two-point cutting device, as shown in FIG. 2, a movable insulator 5 is vertically supported at a central portion of a base 1 so as to be rotatable. The fixed insulators 2a and 2b are fixed vertically upright.
A contact seat 6 is fixed to the upper end of the movable insulator 5,
Movable contacts 8a, 9a as butt contacts at both ends
Is fixed. Fixed insulator 2
Contact seats 4a, 4b are fixed to the upper ends of a, 2b, and fixed contacts 3a, 3b, which are finger contacts, are fixed respectively. In addition, 10a and 10b are terminal blocks. One end of an operation rod 12 is connected to the movable insulator 5 via a drive mechanism 11. Operation rod 12
The opening / closing drive source 13 is connected to the other end.

Next, the operation of the disconnector will be described. The solid line in FIG. 2 indicates the open state of the disconnector. When the disconnector is closed from this state, the open / close drive source 13 is driven. This driving force is transmitted to the operating rod 12, and further transmitted to the movable insulator 5 via the drive mechanism 11, and the movable insulator 5 rotates clockwise. As a result, when the blade 7 rotates clockwise integrally with the movable insulator 5 and the movable contacts 8a and 9a of the blade 7 come into contact with the fixed contacts 3a and 3b of the fixed insulators 2a and 2b, respectively. Then, the opening / closing drive source 13 stops, and the closing operation ends. The dotted line in FIG. 2 indicates this closed state. In this state, the terminal block 10a is connected to the fixed contact 3a, the movable contact 8a, the blade 7, the movable contact 9a, and the fixed contact 3b. A current path to the table 10b is formed.

On the other hand, the operation of opening the circuit may be performed in a completely opposite manner to the operation of closing the circuit, so that the description thereof will be omitted.

[0005]

In the conventional horizontal two-point cutting path device described above, the blades 7 project in the interphase direction when the circuit is opened, so that the interphase distance of each phase is set to the required insulation distance. Since the inter-phase dimension must be added to the dimension, there were cases where it was troublesome when the installation location was narrow. Especially when installed in a high voltage system,
Since the distance between the poles becomes large, the blade 7 becomes long,
As a result, the required interphase dimensions are very large.

Accordingly, the present invention is to reduce the length of the blade by increasing the number of circuit contacts and the number of blades, thereby reducing the distance from the center in the base longitudinal direction at the time of opening to the tip of the blade. Thus, the required inter-phase dimension is shortened, and the installation space is reduced.

[0007]

According to the present invention, first and second fixed insulators are provided at both ends of a base, and first and second fixed insulators are provided at upper end portions of the first and second fixed insulators. A fixed contact is provided, respectively, and the first and second movable insulators are rotatably provided on the base between the first and second fixed insulators, and at the upper end portions of the first and second movable insulators. First and second blades are provided, and at both ends of the first blade, a first movable contact that comes into contact with and separates from the first fixed contact, and a second movable contact, respectively. Along with providing, at both ends of the second blade, a third movable contact that comes into contact with and separates from the second movable contact, and a fourth movable contact that comes into contact with and separates from the second fixed contact The first and second movable insulators are provided with each other during opening and closing operations. In the opposite direction so as to rotate.

In the multipoint cutting path device of the present invention configured as described above, the two blades integrated with the movable insulator rotate to open and close. Since the number of circuit contacts is increased, the length of the blade is shortened, and the dimension between the blades after the opening operation is shortened. Therefore, the inter-phase dimension of the disconnector can be shortened.

[0009]

FIG. 1 shows an embodiment of a multipoint cutting device according to the present invention. In FIG. 1, the base 1
A first fixed insulator 22a and a second fixed insulator 22b are respectively vertically fixed to both ends of the. A contact seat 4a is provided at the upper end of the first fixed insulator 22a.
As a result, the first fixed contact 23a is fixed, and the upper end of the second fixed insulator 22b is provided with a contact seat 4b.
Thus, the second fixed contact 23b is fixed.

Between the first fixed insulator 22a and the second fixed insulator 22b, the first movable insulator 25 is attached to the base 1.
a and the second movable insulator 25b are each supported vertically and rotatably. First movable insulator 25a
The first blade 27 is provided on the upper end of the first blade 27 by the contact seat 6a.
a is fixed, and the second blade 27b is fixed to the upper end of the second movable insulator 25b by the contact seat 6b. At both ends of the first blade 27a, a first movable contact 28a which comes into contact with and separates from the first fixed contact 23a.
And a second movable contact 29a.
At both ends of the second blade 27b, a third movable contact 28b contacting and separating from the second movable contact 29a, and a fourth movable contact 29b contacting and separating from the second fixed contact 23b are provided. Are respectively provided.

The base ends of the first movable insulator 25a and the second movable insulator 25b are connected by an operation pipe 14 so as to rotate in opposite directions. The drive mechanism 11 connected to the opening / closing drive source 13 via the operation rod 12 is connected to the base end of the second movable insulator 25b.

Next, the operation of the multipoint disconnector according to the above embodiment will be described. In the open state shown by the solid line in FIG.
When the is driven, the driving force is transmitted to the driving mechanism 11 via the operation rod 12, and the second movable insulator 25b and the second blade 27b rotate counterclockwise as one unit, and at the same time, via the operation pipe 14. And the first movable insulator 25
a and the first blade 27a integrally rotate clockwise.

Immediately before the end of the closing operation, the first movable contact 28a of the first blade 27a comes into contact with the first fixed contact 23a, and the second movable contact 29a of the first blade 27a becomes the second movable contact 29a. The third movable contact 28b of the second blade 27b contacts the fourth movable contact 29b of the second blade 27b, and the fourth movable contact 29b of the second blade 27b contacts the second fixed contact 23b, as shown by a dotted line in FIG. When the first blade 27a and the second blade 27b are on a straight line, the opening / closing drive source 1
The drive of No. 3 stops, and the closing operation ends.

Therefore, in this closed state, the first fixed contact 23a, the first movable contact 28a, the first blade 27a, the second movable contact 29
a, a third movable contact 28b, a second blade 27b,
Fourth movable contact 29b and second fixed contact 23b
, A current path to the terminal block 10b is formed.

In the opening operation, if the second movable insulator 25b is rotated clockwise, the first movable insulator 25a is rotated counterclockwise, and the operation completely opposite to the above-described closing operation is performed. The description is omitted here.

[0016]

According to the present invention, the two blades protrude in the interphase direction after the disconnector has completed the opening operation. However, the length of the blades is short, so that the required interphase size can be reduced. Installation space can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a multipoint cutting device according to the present invention.

FIG. 2 is a diagram illustrating an example of a conventional horizontal two-point cutting path device.

[Explanation of symbols]

 1 Base 4a, 4b Contact seat 6a, 6b Contact seat 22a First fixed insulator 22b Second fixed insulator 23a First fixed contact 23b Second fixed contact 25a First movable insulator 25b Second movable insulator 27a first blade 27b second blade 28a first movable contact 28b third movable contact 29a second movable contact 29b fourth movable contact

Claims (1)

[Claims] A first and a second fixed insulator are provided at both ends of a base, and a first and a second fixed contact are provided at an upper end of the first and the second fixed insulator, respectively. On the base between the first and second stationary insulators,
First and second movable insulators are provided rotatably, and first and second blades are provided at upper end portions of the first and second movable insulators, respectively, at both end portions of the first blade, A first movable contact that comes in contact with and separates from the first fixed contact, and a second movable contact are provided, respectively, at both ends of the second blade,
A third movable contact that comes into contact with and separates from the second movable contact,
A fourth movable contact that comes into contact with and separates from the second fixed contact, and the first and second movable insulators are rotated in opposite directions during opening and closing operations. And a multi-point cutting device.