JPH11224572A - Switching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten assembling work time without being affected by a manufacturing error and assembling accuracy of each part in a fixed electrode and a moving electrode. SOLUTION: This device is equipped with a driving shaft 51, a fixed electrode 41, a movable blade 54 which is rotated by the driving shaft 51, can be brought into contact with the fixed electrode 41 and can be detached from it, a moving electrode 53 which is supported by the driving shaft 51 and is electrically connected to the movable blade 54, and insulating material members 65, 66 which are placed so as to sandwich the movable blade 54 and links the fixed electrode 41 and the moving electrode 53.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear used for transmitting and distributing electric power and receiving and transforming electric power, and more particularly to shortening an assembling time.

[0002]

2. Description of the Related Art FIGS. 11 and 12 are sectional views of the conventional switchgear shown in FIGS. 1 and 2 described in Japanese Patent Application No. 8-136601 filed by the same applicant. It is. In each of the drawings, reference numeral 1 denotes a container in which an insulating gas such as SF ₆ is sealed, and connection ports 2 to 4 are provided.
Reference numerals 5 to 7 are insulating spacers attached to the connection ports 2 to 4, respectively. Reference numerals 8 to 10 denote bus lines, which are formed by conductors 11 and 12, conductive members 13 and 14, and a connecting conductor 15.

The busbars 8 to 10 are fixed to insulating spacers 6 and 7 via conductors 11 and 12, respectively.
Reference numeral 16 denotes a three-phase branching conductor that is arranged in parallel and supported by the insulating spacers 5 and serves as a current flow path. Reference numeral 17 denotes a drive shaft which is connected by insulators 19 to 21 and is rotationally driven by a drive source (not shown). The through portion 18 of the container 1 is made airtight. Reference numeral 22 denotes a stationary electrode which is arranged at a predetermined distance from the drive shaft 17 and generates a contact pressure with a movable blade 24, which will be described later, and conducts electricity 23
Is provided.

A movable blade 24 is rotated by the drive shaft 17 and comes into contact with and separates from the fixed electrode 22. A movable blade 25 is arranged to extend from one of the lines 26 connecting the drive shaft 17 and the fixed electrode 22. The side electrode supports the drive shaft 17 and is electrically connected to the movable blade 24. 27 is the main bus 8
The fixed side electrode is electrically connected to the movable blade 24 and is disposed on the other side of the line 26 connecting the drive shaft 17 and the fixed side electrode 22. The stationary electrode 27 is provided with an energizing contact 28 for generating a contact pressure with the movable blade 24 and for making an electrical connection.

Next, the operation will be described. FIG. 13 shows FIG.
FIG. 13 is a circuit diagram electrically showing the states of FIGS. 1 and 12. FIG.
1 to 13, the stationary electrode 27 and the movable blade 2
4 is closed, and the fixed side electrode 2
The case where the movable blade 24 and the movable blade 24 function as a ground switch when the circuit is closed will be described. Note that the circuit diagram of FIG. 13 shows a case where the circuit acts as a disconnector.

In FIG. 11, when the drive shaft 17 is rotated clockwise by a drive source (not shown), the movable blade 24 is separated from the fixed-side electrode 27 on the disconnecting side and passes through the separation position 29. After the movable blade 24 is
And the ground switch side is closed. Thereby, the maintenance and inspection work of the branch circuit connected to the branch conductor 11 can be performed.

The fixed electrode 22 and the movable blade 24
When the drive shaft 17 is rotated counterclockwise by a drive source (not shown) in the closed state on the grounding switch side where the movable blade 24 contacts the movable blade 24 from the fixed side electrode 22 on the grounding switch side. When separated, the movable blade 24 comes into contact with the fixed-side electrode 27 and the disconnector side is closed. Thus, power is supplied from the bus 15 to the branch circuit from the phase conductor 16 via the fixed-side electrode 27, the movable blade 24, and the movable-side electrode 25.

[0008]

In the conventional switchgear, the positions of the fixed electrodes 22, 27 are determined by the container 1, the insulating spacers 6, 7, and the busbars 8 to 10 as described above. The position of the electrode 25 depends on the container 1, the insulating spacer 5, the branching conductor 16, the drive shaft 17, and the insulators 19 to
21, the positional relationship between the movable blade 24 supported by the movable-side electrode 25 and each of the fixed-side electrodes 22, 27 and each of the current-carrying contacts 23, 28 depends on the manufacturing error and assembly accuracy of each part. Therefore, there is a problem that the assembling work is troublesome.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has as its object to provide an opening / closing device which can save time and labor for adjusting the position at the time of assembling and can shorten the assembling work time. Aim.

[0010]

According to a first aspect of the present invention, there is provided an opening / closing device comprising: a drive shaft; a fixed electrode disposed at a predetermined distance from the drive shaft; A movable blade that can be brought into contact with and separated from the electrode, a movable-side electrode supported by the drive shaft and electrically connected to the movable blade, and an insulating member disposed to sandwich the movable blade and connecting the fixed-side electrode and the movable-side electrode It is provided with.

According to a second aspect of the present invention, there is provided an opening / closing device comprising: a drive shaft; a first fixed electrode disposed at a predetermined distance from the drive shaft; and a fixed electrode rotated by the drive shaft. A movable blade supported by the drive shaft and electrically connected to the movable blade, and a second movable blade disposed at a predetermined distance from the fixed electrode and capable of coming into contact with and separating from the movable blade. And an insulating member arranged to sandwich the movable blade and connecting the fixed-side electrode, the movable-side electrode and the second fixed-side electrode.

According to a third aspect of the present invention, in the switching device according to the first or second aspect, the fixed-side electrode and the movable-side electrode include three phases arranged collectively.

In the switching device according to a fourth aspect of the present invention, in the third aspect, adjacent ones of the insulating members of each phase are connected to each other.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cutaway top view showing a three-phase bus according to Embodiment 1 of the present invention, in which a three-phase bus is separated for each phase, FIG. 2 is a front view, and FIG. 3 is a fixed-side electrode in FIGS. FIG. 4 is a sectional view showing details of FIG.
FIG. 3 is a cross-sectional view illustrating details of a movable-side electrode in FIG. 2 and FIG.

Reference numeral 34 denotes a lid that closes the connection port 32, reference numeral 35 denotes an electrode plate, reference numerals 36 to 38 denote buses arranged at predetermined intervals in the radial direction in the container 31, and reference numeral 39 denotes a space between the electrode plate 35 and the busbar 37. Placed insulating members,

Reference numeral 40 denotes a current-carrying conductor having one end connected to the bus bar 37 and the other end extending toward the connection port 33;
As shown in FIG. 3, the fixed electrode attached to the other end of the main body 43 has a mounting portion 42, a main body 43 extending from the mounting portion 42, and a movable blade 54 described below inside the main body 43 and a predetermined pressure. It is formed by a plurality of current-carrying contacts 44 that come into contact with each other, is divided into two so as to divide the current-carrying contacts 44, and is fixedly joined after being connected by insulating members 65 and 66 described later.

Reference numeral 45 denotes a container for accommodating the opening / closing device, and connection ports 46 to 49 are formed at both ends in the radial and longitudinal directions, respectively. And, it is connected to the container 31 through the connection port 46. A driving device 50 is hermetically attached to the connection port 48, a driving shaft 51 made of an insulating material having one end connected to the driving device 50, and a supporting shaft 52 implanted at the other end of the driving shaft 51.

Reference numeral 53 denotes a movable electrode composed of a pair of electrodes which are divided into upper and lower parts and mounted on a support shaft 52, and 54 has one end supported by the support shaft 52 via the movable electrode 53 and the other end fixed. And a movable blade formed so as to be able to come and go. The movable blade 54 is turned around the drive shaft 51 so as to draw a locus 58.

Reference numeral 59 denotes an insulating spacer attached to the connection port 47, and supports the conductor 60. Reference numeral 61 denotes a connection pipe connected to the container 45 via an insulating spacer 59; 62, a current-carrying member having one end connected to the conductor 60; and the other end connected to the movable electrode 53; A lid 64 is a second fixed-side electrode attached to the lid 63 so as to be able to contact and separate from the movable blade 54, and is similar to the fixed-side electrode 41.

Here, the fixed side electrode 41 and the movable side electrode 53
The second fixed-side electrode 64 has a movable blade 5 on both sides.
4, and are integrally connected by first and second insulating members 65 and 66 made of epoxy resin filled with alumina, and after being subjected to a predetermined treatment, are integrally fixedly joined.

Next, the operation will be described. FIG. 5 is a circuit diagram electrically showing the state of FIG. 1 and 2, when the fixed electrode 41 and the movable blade 54 are closed, they function as disconnectors, and when the second fixed electrode 64 and the movable blade 54 are closed, they function as ground switches. The case will be described. Note that the circuit diagram of FIG. 5 shows a case where the circuit acts as a disconnector.

In FIG. 1, when the drive shaft 51 is rotated clockwise by the drive device 50, the fixed electrode 4 on the disconnection side is turned on.
After the movable blade 54 is separated from 1 and passes through the separation position 67, the movable blade 54 comes into contact with the second fixed-side electrode 64, and the ground switch closes. This allows
The maintenance work of the circuit connected to the conductor 60 can be performed.

In the closed state on the ground switch side where the second fixed electrode 64 and the movable blade 54 are in contact with each other,
When the drive shaft 51 is rotated counterclockwise by the drive device 50, the movable blade 54 is separated from the second fixed electrode 64 on the ground switch side, and the movable blade 54 comes into contact with the fixed electrode 41. As a result, the disconnector side is closed. Thereby, the fixed side electrode 41 and the movable blade 5
Electric power is supplied from the conductor 60 via the movable electrode 4 and the movable-side electrode 53.

As described above, according to the first embodiment, the fixed electrode 41, the movable electrode 53, and the second fixed electrode 63
Are connected to each other with the first and second insulating members 64 and 65 while maintaining the positional relationship, so that the accuracy of the positional relationship between the components can be improved. The assembly work time can be reduced.

In the first embodiment, the case of switching between the disconnecting switch and the earthing switch has been described. However, it is needless to say that the same effect can be obtained by using only the disconnecting switch.

Embodiment 2 FIG. 6 is a cutaway front view showing a three-phase switchgear according to Embodiment 2 of the present invention, FIG. 7 is a side view thereof, and FIG. 8 is a circuit diagram showing the state of FIG. 6 electrically. . In each figure, 71 is a container in which insulating gas such as SF ₆ is sealed, 72 and 73 are connection ports formed on both sides in the radial direction, 74 and 75 are insulating spacers closing the connection ports 72 and 73, respectively. 76-78,
Reference numerals 79 to 81 denote conductors which are supported at predetermined intervals by the insulating spacers 74 and 75, respectively.

The conductors 82 to 84 have conductors 76 to 7 at one end, respectively.
The other end of the current-carrying member connected to 8 protrudes toward the center of the container 71 at a predetermined interval. 85-8
Reference numeral 7 denotes a current-carrying member having one end connected to the conductors 79 to 81. The other end forms a predetermined interval and projects toward the center of the container 71.

Numeral 88 designates a driving device which is formed at a predetermined interval in parallel with the insulating spacer 74 and penetrates the container 71.
The through portion is adapted to maintain airtightness. Reference numeral 89 denotes a driving shaft connected to the driving device 88. Although not shown, a supporting shaft which is integrally rotated is implanted at a distal end portion. Reference numeral 90 denotes a second driving device which is formed at a predetermined interval in parallel with the insulating spacer 75 and penetrates the container 71, and the penetrating portion is kept airtight. 91 is a second driving device 90
Although not shown, a support shaft that is integrally rotated is implanted at a tip end of the second drive shaft connected to the second drive shaft.

Reference numeral 92 denotes a movable-side electrode which is composed of a pair of electrodes and supported by a drive shaft 89 via a support shaft (not shown). Three movable phases are attached to the other ends of the current-carrying conductors 82 to 84, respectively. Reference numeral 93 denotes a movable blade, one end of which is supported by a support shaft via a movable-side electrode 92, and has a predetermined length. Reference numeral 94 denotes a spacing member that divides the movable-side electrode 92 for each phase.

Reference numeral 95 denotes a second movable electrode which is composed of a pair of electrodes and is supported by a second drive shaft 91 via a support shaft (not shown). Attached to. Reference numeral 96 denotes a second movable blade, one end of which is supported by the drive shaft 91 via the second movable side electrode 95, and is formed to a predetermined length.
Is located at a standby position that is not in contact with. Reference numeral 97 denotes a spacing member that divides the second movable-side electrode 92 for each phase.

Reference numeral 98 denotes a fixed-side electrode for a disconnector that is attached to the tip of each of the current-carrying members 85 to 87 so as to be able to contact and separate from the movable blade 93, and 99 is a ground that is attached to the container 71 so that it can contact and separate from the movable blade 93 Fixed side electrode, 100
Is a fixed-side electrode for grounding attached to the container 71 so as to be able to come in contact with and separate from the second movable blade 96.

Reference numerals 101 and 102 denote first and second insulating members which are provided so as to sandwich the movable blade 93 and connect the movable-side electrode 92, the disconnector fixed-side electrode 98, and the grounding fixed-side electrode 99, respectively. is there. Reference numerals 103 and 104 denote third and fourth insulating members that are disposed so as to sandwich the second movable blade 96 and that connect the second movable side electrode 95 and the fixed side electrode 100 for grounding.

Here, the fixed side electrode 93 for the disconnector and the fixed side electrodes 99 and 100 for grounding are the same as the fixed side electrode 41 shown in FIG. The contact is provided so that the contact can be divided into two. The movable side electrode 92 and the second movable side electrode 95 are the same as the movable side electrode 53 shown in FIG. 4 used in the first embodiment, and each of the movable blades 93 and 96 is connected to one end of a pair of electrodes. It is designed to fit.

The movable electrode 92, the disconnector fixed electrode 98, and the ground fixed electrode 99 are disposed so that both sides sandwich the movable blade 93, and are made of a first resin made of epoxy resin filled with alumina. And the second insulating member 101,
After being connected at 102, a predetermined process is performed to join and fix. Second movable electrode 95 and ground fixed electrode 100
The third means that the third movable blade 96 is disposed on both sides of the second movable blade 96 and is made of epoxy resin filled with alumina.
After being connected with the fourth insulating members 103 and 104, a predetermined process is performed to fix and join them. Note that reference numeral 105 denotes an open position of the movable blade 93.

Next, the operation will be described. FIG. 8 is a circuit diagram electrically showing the state of FIG. 6 and 8, when the movable blade 93 and the fixed-side electrode 98 for disconnector are closed, the disconnector is used. When the movable blade 93 and the fixed-side electrode 99 for grounding are closed, and when the second movable A description will be given of a case where each of the blade 96 and the fixed-side electrode for ground 100 acts as a ground switch when the circuit is closed. The circuit diagram of FIG. 8 shows a case where the circuit acts as a disconnector.

6 and 7, the first driving device 8
When the first drive shaft 89 is rotated counterclockwise in FIG. 6 by 8, the movable blade 93 is separated from the disconnector fixed side electrode 98, and after moving through the separation position 105, the movable blade 93 is moved. The grounding switch side is brought into a closed state in contact with the fixed side electrode 99 for grounding. Thereby, the maintenance and inspection work of the circuit connected to the conductor 77 can be performed.

When the second drive shaft 90 is rotated counterclockwise in FIG. 6 by the second drive device 90,
The second movable blade 96 at the standby position comes into contact with the fixed-side electrode 100 for grounding, and the grounding switch side is closed.
Thus, maintenance and inspection of the circuit connected to the conductor 80 can be performed.

Further, in the closed state of the grounding switch side where the fixed ground electrode 99 and the movable blade 93 are in contact with each other,
When the first drive shaft 89 is rotated clockwise in FIG. 6 by the first drive device 88, the fixed ground electrode 99 for grounding is rotated.
The movable blade 93 is separated from the movable electrode 93, and the movable blade 93 comes into contact with the fixed-side electrode 98, so that the disconnector side is closed.
As a result, the movable electrode 9 is separated from the conductor 77 and the conducting member 83.
2, conductor 8 via movable blade 93 and current-carrying conductor 86
Power is supplied from zero.

Further, in the closed state of the grounding switch in which the grounding fixed side electrode 100 and the second movable blade 96 are in contact with each other, the second driving shaft 91 is rotated clockwise by the second driving device 90. Then, the movable blade 96 is separated from the ground fixed electrode 100, and the movable blade 96 is returned to the standby position. Thereby, electric power is supplied from the conductor 80 via the disconnector fixed side electrode 98 and the conducting member 86.

As described above, according to the second embodiment, in the switching device in which three phases are collectively arranged, the movable electrodes 92 and 95 and the fixed electrodes 98, 99 and 100 of each phase are movable. Since the blades 93 or 96 are arranged so as to sandwich each other and are connected by the insulating members 101, 102 or 103, 104, the accuracy of the positional relationship of each part can be improved, so that the assembly work time can be reduced. Becomes

Embodiment 3 FIG. 9 is a cutaway front view showing a three-phase switchgear according to Embodiment 3 of the present invention, and FIG. 10 is a side view thereof. In each drawing, the same portions as those described in Embodiment 2 are denoted by the same reference numerals, and detailed description is omitted.

FIG. 10 shows a case in which the U-phase, V-phase and W-phase are arranged from the left side. Reference numerals 101 and 102 denote U-phase and W-phase movable-side electrodes 92, disconnector fixed-side electrodes 98, and ground fixed-side electrodes. 99 are first and second insulating members integrally connected to each other on one side and the other side. Reference numerals 103 and 104 denote U-phase and W-phase second movable electrodes 95 and ground fixed-side electrodes 100.
And a third and a fourth insulating member in which each one side and the other side are integrally connected.

Reference numeral 106 denotes an adjacent U phase and V phase, and V phase and W
This is an insulating member in which one side and the other side of the phase movable side electrode 92, disconnector fixed side electrode 98, and ground fixed side electrode 99 are integrally connected. 107 is an adjacent U phase and V phase,
And an insulating member integrally connecting one side and the other side of the V-phase and W-phase second movable electrodes 95 and the fixed-side electrode 100 for grounding.

As described above, the movable-side electrode 92, the fixed-side electrode 98 for the disconnector and the fixed-side electrode 99 for grounding, and the second movable-side electrode 95 and the fixed-side electrode 100 for grounding are formed by the movable blade 93 or the second A first insulating member 101, a second insulating member 102, and an insulating member 10 which are disposed so as to sandwich the movable blade 96 and are made of epoxy resin filled with alumina.
6, third insulating member 103, fourth insulating member 10
4. After being integrally connected with each other by the insulating member 107, a predetermined process is performed, and the two members are joined and fixed.

As described above, according to the third embodiment, adjacent ones of the insulating members of the respective phases are connected to each other, so that the accuracy of the positional relationship of the respective parts can be improved, thereby assembling. Work time can be reduced.

[0046]

As described above, according to the first aspect of the present invention, the drive shaft, the fixed-side electrode arranged at a predetermined distance from the drive shaft, the fixed-side electrode rotated by the drive shaft, A movable blade that can be brought into contact with and separated from the movable blade, a movable electrode supported by the drive shaft and electrically connected to the movable blade, and an insulating member that is disposed to sandwich the movable blade and that connects the fixed electrode and the movable electrode. With this configuration, it is possible to provide an opening / closing device capable of shortening the assembling work time by improving the accuracy of the positional relationship between the components.

According to the second aspect of the present invention, the drive shaft, the first fixed-side electrode disposed at a predetermined distance from the drive shaft, and the contact with the fixed-side electrode rotated by the drive shaft. A movable blade that can be separated, a movable electrode that is supported by the drive shaft and electrically connected to the movable blade, and a movable electrode that is arranged at a predetermined distance from the first fixed electrode and that can be brought into contact with and separated from the movable blade. 2 fixed electrode and an insulating member arranged to sandwich the movable blade and connecting the fixed-side electrode, the movable-side electrode and the second fixed-side electrode. The improvement can provide an opening / closing device capable of shortening the assembling work time.

According to the third aspect of the present invention, in the first or second aspect, the fixed-side electrode and the movable-side electrode are configured so that three phases are collectively arranged. Can be provided, whereby an opening and closing device capable of shortening the assembling work time can be provided.

According to a fourth aspect of the present invention, in the third aspect, adjacent ones of the insulating members of each phase are connected to each other, so that the accuracy of the positional relationship of each part is improved. By doing so, it is possible to provide an opening and closing device capable of reducing the assembly work time.

[Brief description of the drawings]

FIG. 1 is a top view of a switchgear according to Embodiment 1 of the present invention.

FIG. 2 is a front view of the switchgear according to the first embodiment of the present invention.

FIG. 3 is a sectional view showing details of a fixed-side electrode in FIGS. 1 and 2;

FIG. 4 is a cross-sectional view showing details of a movable-side electrode in FIGS. 1 and 2;

FIG. 5 is a circuit diagram of the switchgear according to the first embodiment of the present invention.

FIG. 6 is a front view of a switchgear according to a second embodiment of the present invention.

FIG. 7 is a side view of a switchgear according to a second embodiment of the present invention.

FIG. 8 is a circuit diagram of a switchgear according to a second embodiment of the present invention.

FIG. 9 is a front view of a switchgear according to Embodiment 3 of the present invention.

FIG. 10 is a side view of a switchgear according to Embodiment 3 of the present invention.

FIG. 11 is a sectional view showing a conventional switchgear.

FIG. 12 is a sectional view taken along the line XII-XII in FIG. 11;

FIG. 13 is a circuit diagram of a conventional switchgear.

[Explanation of symbols]

41 fixed side electrode (disconnector fixed side electrode), 51 drive shaft, 53 movable side electrode, 54 movable blade, 64 second fixed side electrode (grounding fixed side electrode), 65 insulating member (first insulating member) , 66 Insulating member (second insulating member), 106, 107 Insulating member.

Claims (4)

[Claims] 1. A drive shaft, a fixed electrode disposed at a predetermined distance from the drive shaft, a movable blade rotated by the drive shaft and capable of coming into contact with and separating from the fixed electrode, and the drive shaft A movable electrode electrically supported and electrically connected to the movable blade, and an insulating member arranged to sandwich the movable blade and connecting the fixed electrode and the movable electrode. Switchgear. 2. A drive shaft, a first fixed-side electrode arranged at a predetermined distance from the drive shaft, a movable blade rotated by the drive shaft and capable of coming into contact with and separating from the fixed-side electrode;
A movable-side electrode supported by the drive shaft and electrically connected to the movable blade, a second fixed-side electrode disposed at a predetermined distance from the fixed-side electrode, and capable of coming into contact with and separating from the movable blade; An opening / closing device that is provided so as to sandwich the movable blade and that connects the fixed-side electrode, the movable-side electrode, and the second fixed-side electrode. 3. The fixed-side electrode and the movable-side electrode, wherein three phases are collectively arranged.
3. The switchgear according to claim 1. 4. The switchgear according to claim 3, wherein adjacent ones of the insulating members of each phase are connected to each other.