WO2016125328A1

WO2016125328A1 - Switch gear

Info

Publication number: WO2016125328A1
Application number: PCT/JP2015/072496
Authority: WO
Inventors: 知孝矢野; 安部　淳一; 勝志中田
Original assignee: 三菱電機株式会社
Priority date: 2015-02-04
Filing date: 2015-08-07
Publication date: 2016-08-11
Also published as: JPWO2016125328A1

Abstract

According to the present invention, a switch gear (100a) is obtained, which is a single body monophasic module comprising: a fixed-side electrode (5a) and a movable-side electrode (5b) constituting a switch, which are sealed inside a cylindrical vacuum container (4); a fixed-side electrode rod (7) provided at an extremity portion of the vacuum container (4), and connected to a fixed-side connection conductor (6) for current extraction while being connected to the fixed-side electrode (5a); an electromagnetic operation mechanism (3) disposed outside of the vacuum container (4) and having a linear drive axis (8); a movable-side electrode rod (10) coupled to the linear drive axis (8); and a movable-side connection conductor (11) covered, along with the vacuum container (4) and the fixed-side connection conductor (6), by a molded insulator (14). In this switch gear, the respective central axes of the fixed-side electrode (5a), the movable-side electrode (5b), the fixed-side electrode rod (7), the linear drive axis (8) of the electromagnetic operation mechanism (3), and the movable-side electrode rod (10) are fixed in a state in which the axes are disposed on the same line, and the electromagnetic operation mechanism (3) is fixed to the molded insulator (14).

Description

Switchgear

The present invention relates to a switchgear that is used for power transmission / distribution, power distribution, etc., and opens and closes the power.

In a conventional switchgear, a vacuum valve in which a movable electrode to be driven and at least one pair of fixed electrodes paired with the movable electrode are secretly sealed in a vacuum vessel divided into a plurality of vacuum chambers is provided in the switchgear housing. It is installed in. Further, the switch gear is configured to transmit the output of the operation mechanism installed in the switch gear housing to the movable electrode via the conversion shaft and the operation rod (for example, see Patent Document 1).

International Publication No. 2000/021108

However, in the conventional switchgear disclosed in Patent Document 1, the electrodes and the operation mechanism output shaft are not coaxially arranged, and the vacuum valve and the operation mechanism are independently attached to the switchgear housing. It has been. For this reason, the connection structure between the movable electrode of the vacuum valve and the output shaft of the operation mechanism is complicated, which may increase the size of the switch gear.
In addition, since the vacuum valve and the operation mechanism are separate units, the arrangement method of the vacuum valve and operation mechanism, the housing structure, and the arrangement method of the main circuit conductor must be significantly changed according to various customer specifications. There was a problem.

The present invention has been made to solve the above-described problems. A switchgear that simplifies the connection structure between the movable electrode inside the vacuum vessel and the output shaft of the electromagnetic operation mechanism, and can prevent an increase in size. The purpose is to get. Another object of the present invention is to obtain a switchgear that can prevent a significant change when responding to various customer specifications.

The switchgear according to the present invention is enclosed in a cylindrical vacuum vessel, and is provided at a fixed side electrode and a movable side electrode constituting a switch, and at an end of the vacuum vessel, and is fixed for current extraction. A fixed-side electrode rod connected to the side-connection conductor and connected to the fixed-side electrode; an electromagnetic operating mechanism that is arranged outside the vacuum vessel and has a linear drive shaft that linearly drives; and the movable-side electrode A movable electrode rod connected to the linear drive shaft of the electromagnetic operating mechanism via an insulating support rod disposed inside the vacuum vessel, and for extracting current from the movable electrode rod. A movable side connection conductor covered with a mold insulator together with the vacuum container, the fixed side electrode, the movable side electrode, the fixed side electrode rod, and the electromagnetic operating mechanism. The linear drive shaft and the central axis of each of the movable electrode rods are fixed in a state of being arranged on the same line, and the electromagnetic operation mechanism is an integrated single-phase module fixed to the mold insulator. It is characterized by.

According to the switchgear according to the present invention, since the drive direction of the electrode and the drive direction of the electromagnetic operation mechanism are all on the same line, connection with the conversion shaft and other modules is unnecessary and electromagnetic operation is performed in the main circuit connection direction. Since there is no mechanism, a switch gear having a compact configuration can be obtained.

It is a cross-sectional side view which shows the switchgear in Embodiment 1 of this invention. It is a cross-sectional side view which shows the principal part of the switchgear in Embodiment 2 of this invention. It is a front view which shows the external shape of the switchgear in Embodiment 3 of this invention. It is a cross-sectional side view which shows the principal part of the switchgear in Embodiment 4 of this invention. It is a cross-sectional side view which shows the switchgear in Embodiment 5 of this invention. It is a cross-sectional side view which shows the electromagnetic operating mechanism in Embodiment 1 and Embodiment 2 of this invention.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
1 is a sectional side view showing a switchgear according to Embodiment 1 of the present invention. As shown in FIG. 1, the switch gear 100 a includes a control box 1 that houses a control device for the first integrated single-phase module 50 a and the switch gear 100 a on the gantry 2.
The first integrated single-phase module 50 a includes a cylindrical vacuum vessel 4 having an insulator, and a fixed side electrode 5 a and a movable side electrode 5 b that constitute a switch in the vacuum vessel 4. The first integrated single-phase module 50a is provided at the end of the vacuum vessel 4, and is connected to the fixed-side connection conductor 6 for extracting current and the fixed-side electrode rod 7 connected to the fixed-side electrode 5a. I have. Furthermore, the first integrated single-phase module 50a includes an electromagnetic operating mechanism 3 that is disposed outside the vacuum vessel 4 and has a linear drive shaft 8 that linearly drives.

The first integrated single-phase module 50a is connected to the linear drive shaft 8 of the electromagnetic operating mechanism 3 through an insulating support rod 9 connected to the movable electrode 5b and disposed inside the vacuum vessel 4. The movable side electrode rod 10 is provided. Furthermore, the first integrated single-phase module 50 a has a flexible conductor 12 provided in the vacuum vessel 4 and connected to the movable side connection conductor 11 for taking out current from the movable side electrode rod 10. The insulating support rod 9 is disposed inside the vacuum vessel 4 for electrical insulation.
The vacuum vessel 4, the fixed side connection conductor 6, and the movable side connection conductor 11 are covered with a mold insulator 14 that is a resin such as epoxy.
Further, for connection with other main circuit equipment, the portion of the fixed side connection conductor 6 covered with the mold insulator 14 and the portion of the movable side connection conductor 11 covered with the mold insulator 14 are convex. It is molded into a shape. In FIG. 1, the cable connector 13 is connected in the up-down direction of the first integrated single-phase module 50a. The connection between the first integrated single-phase module 50a and another integrated single-phase module is performed by using a connection module in which a conductor is arranged at the center and the both ends are formed by another mold insulator having a concave shape.

Furthermore, the fixed side electrode 5a, the movable side electrode 5b, the fixed side electrode rod 7, the linear drive shaft 8 and the movable side electrode rod 10 of the electromagnetic operating mechanism 3 are fixed in a state in which the respective central axes are arranged on the same line. ing. The electromagnetic operation mechanism 3 is fixedly attached to the mold insulator 14. In the first embodiment, the mechanical drive unit has a configuration completed by the first integrated single-phase module 50a. In FIG. 1, the mechanical drive unit includes a movable side electrode 5 b, a linear drive shaft 8 of the electromagnetic operation mechanism 3, an insulating support bar 9, and a movable side electrode bar 10.
FIG. 6 is a cross-sectional side view showing details of the electromagnetic operation mechanism 3 in the first embodiment. As shown in FIG. 6, the electromagnetic operating mechanism 3 includes a movable iron core 21 that is integrally driven with the linear drive shaft 8 inside the fixed iron core 22, and is energized to the closing coil 9 or the opening coil 20. The linear drive shaft 8 and the movable iron core 21 operate.
According to the switchgear 100a of the first embodiment of the present invention, the mechanical drive units in the first integrated single-phase module 50a are all arranged on a straight line. As a result, it is not necessary to connect the drive unit with a conversion shaft in the drive direction or another module, and the electromagnetic operation mechanism 3 is not disposed in the main circuit connection direction.
Further, according to the switchgear 100a of the first embodiment of the present invention, not only a compact configuration is possible, but also a simple structure without a conversion shaft in the driving direction is possible, and the reliability is excellent with excellent maintainability. It is possible to provide a high switchgear.

In Embodiment 1, since the switch is a circuit breaker or a disconnector, various switches can be modularized. Furthermore, the outer surface of the mold insulator 14 may be grounded with a conductive paint or resin. This not only reduces the risk of electric shock and increases safety, but also eliminates the need for a housing that covers the module, thereby reducing costs. Furthermore, the electromagnetic operating mechanism 3 changes the distance between the fixed side electrode 5a and the movable side electrode 5b in, for example, two stages, thereby changing the movable side electrode 5b between the cutoff position and the disconnector position, and opens and closes it. The switch can be a combined switchgear of a circuit breaker and a disconnect switch. As a result, the circuit breaker and the disconnecting device can be configured with the same electrode, and the number of parts and the number of necessary modules can be reduced when constructing the main circuit configuration necessary for the switchgear.

Embodiment 2. FIG.
FIG. 2 is a cross-sectional side view showing the main part of the switch gear according to Embodiment 2 of the present invention. In the second embodiment, the same reference numerals as those in the first embodiment are the same as those in the first embodiment, and the description thereof will be omitted. As shown in FIG. 2, the second integrated single-phase module 50b includes a pair of electrodes 5 and a ground electrode 15 for opening and closing the ground. The electrode 5 is accommodated in a cylindrical first vacuum vessel 4a having an insulator. The ground electrode 15 is housed inside a cylindrical second vacuum vessel 4b having an insulator.
The ground electrode 15 enclosed in the second vacuum vessel 4b includes a fixed side ground electrode 15a and a movable side ground electrode 15b. In addition, the second vacuum vessel 4b is connected to a fixed-side connection conductor 6 for taking out current sandwiched between the first vacuum vessel 4a and the second vacuum vessel 4b, and on the fixed side. A fixed-side ground electrode rod 16 connected to the ground electrode 15a is provided.

Furthermore, the second integrated single-phase module 50b includes a second electromagnetic operation mechanism 3b having a second linear drive shaft 8b that is disposed outside the second vacuum vessel 4b and linearly drives. Further, the second electromagnetic operation mechanism 3b is disposed to face the first electromagnetic operation mechanism 3a. Furthermore, the second integrated single-layer module 50b includes a movable ground electrode bar 17 connected to the movable ground electrode 15b and coupled to the second linear drive shaft 8b of the second electromagnetic operation mechanism 3b. ing.
Furthermore, the fixed side electrode 5a, the movable side electrode 5b, the fixed side electrode rod 7, the first linear drive shaft 8a, the movable side electrode rod 10, the fixed side ground electrode 15a, the movable side ground electrode 15b, and the fixed side ground electrode rod 16 The second linear drive shaft 8b and the movable-side ground electrode rod 17 are fixed in a state where their respective central axes are arranged on the same line. The first vacuum container 4a and the second vacuum container 4b, the fixed side connecting conductor 6 and the movable side connecting conductor 11 are covered with a mold insulator. The first electromagnetic operation mechanism 3 a and the second electromagnetic operation mechanism 3 b are fixed and attached to the mold insulator 14. Further, the mechanical drive unit has a configuration completed by the second integrated single-phase module 50b.

According to the switchgear of the second embodiment of the present invention, even when the ground electrode 15 is combined with the electrode 5, one module in which all the mechanical drive units in the second integrated single-phase module 50b are in a straight line. Is possible. Further, there is no need to connect the conversion shaft in the drive direction and the drive unit with other modules, and the first electromagnetic operation mechanism 3a and the second electromagnetic operation mechanism 3b are not arranged in the main circuit connection direction. The second integrated single-phase module 50b is an independent structure whose structure is completed. Therefore, according to the switchgear of the second embodiment of the present invention, a compact configuration of the switchgear is possible even though the ground electrode is added to the configuration of the first embodiment. Further, according to the switchgear of the second embodiment of the present invention, a simple structure without a conversion shaft in the driving direction is possible, and it is possible to provide a highly reliable switchgear with good maintainability. Furthermore, the first electromagnetic operating mechanism 3a and the second electromagnetic operating mechanism 3b in the second embodiment of the present invention have the same configuration as the electromagnetic operating mechanism 3 in the first embodiment shown in FIG.

Embodiment 3 FIG.
FIG. 3 is an external view showing a switchgear according to Embodiment 3 of the present invention. More specifically, FIG. 3 is a front view when the single-phase module 50 is viewed from the cable connector 13 side. In the third embodiment, the same reference numerals as those in the first and second embodiments are the same as those in the first and second embodiments, and the description thereof will be omitted. In FIG. 3, three integrated single-phase modules 50 are arranged side by side in the horizontal direction to form a switch gear for three phases. FIG. 3 shows a configuration in which three single-phase modules 50 are arranged side by side and the cable connectors 13 are respectively connected from above and below.
According to such a configuration, the integrated single-phase module 50 is an independent structure in which the structure is completed. For example, only one to four integrated single-phase modules 50 are arranged, and the single-phase module 50 corresponds to single-phase to four-phase. A switch can be constructed.
According to the configuration of the switchgear according to the third embodiment of the present invention, it is easy to construct a switch corresponding to a single phase to a four phase, and standardization of each module makes it possible to shorten delivery times and reduce costs. .

Embodiment 4 FIG.
4 is a cross-sectional view showing a main part of a switchgear according to Embodiment 4 of the present invention. In the fourth embodiment, the same reference numerals as those in the first and second embodiments are the same as those in the first and second embodiments, and the description thereof will be omitted.
As shown in FIG. 4, for example, the fixed-side connection conductor 6 is formed into a convex shape by a mold insulator 14 for main circuit connection with another module such as another integrated single-phase module. It has a portion 23a. In addition, the movable side connection conductor 11 has a concave molded portion 23b formed into a concave shape by a mold insulator. In the fourth embodiment, the molded portion 23a of the fixed-side connection conductor 6 of the mold insulator 14 has a convex shape, and the molded portion 23b of the movable-side connection conductor 11 of the mold insulator 14 has a concave shape. Or vice versa.

The molded parts 23a and 23b of the mold insulator 14 are connected to a concave connection module 18a with respect to the convex shape and a convex connection module 18b with respect to the concave shape. Connect. The concave connection module 18a is a connection module in which a conductor is arranged at the center and is formed by another mold insulator having a concave shape at both ends. Further, the convex connection module 18b is a connection module in which a conductor is arranged at the center, and both ends are formed by another mold insulator having a convex shape. According to such a configuration, it is possible to standardize the main circuit connection shape between the third integrated single-phase module 50c and another integrated single-phase module.
According to the switchgear of the fourth embodiment of the present invention, connection with other modules becomes easy, and standardization of each module makes it possible to shorten delivery times and reduce costs.

Embodiment 5 FIG.
5 is a sectional view showing a switchgear according to Embodiment 5 of the present invention. In the fifth embodiment, the same reference numerals as those in the first and second embodiments are the same as those in the first and second embodiments, and the description thereof will be omitted. In the fifth embodiment, as shown in FIG. 5, the second integrated single-phase module 50b and the fourth integrated single-phase module 50d are connected to each other by using a concave connection module 18a in the same phase. Is configured. In FIG. 5, a cable connector 13 is used for connection with other main circuit devices. In the fifth embodiment, the number of phases can be freely selected.
According to such a configuration, it is possible to realize a customer-specific main circuit configuration by selecting the necessary integrated single-phase module 50 and combining them using the connection module 18.
According to the switchgear configuration of the fifth embodiment of the present invention, it is easy to construct various main circuit configurations, and by standardizing each module, it is possible to shorten delivery time and cost.
It should be noted that within the scope of the present invention, the embodiments can be freely combined, or the embodiments can be appropriately modified or omitted.

1 control box, 2 bases, 3 electromagnetic operation mechanism, 3a first electromagnetic operation mechanism, 3b second electromagnetic operation mechanism, 4 vacuum vessel, 4a first vacuum vessel, 4b second vacuum vessel, 5 electrodes, 5a Fixed side electrode, 5b movable side electrode, 6 fixed side connection conductor, 7 fixed side electrode rod, 8 linear drive shaft, 8a first linear drive shaft, 8b second linear drive shaft, 9 insulation support rod, 10 movable side Electrode rod, 11 movable side connection conductor, 12 flexible conductor, 13 cable connector, 14 mold insulator, 15 ground electrode, 15a fixed side ground electrode, 15b movable side ground electrode, 16 fixed side ground electrode rod, 17 movable side Ground electrode rod, 18 connection module, 18a concave connection module, 18b convex connection module, 19 closed coil, 20 open coil, 21 movable Core, 22 fixed iron core, 23a convex molded part, 23b concave molded part, 50 integral single-phase module, 50a first integral single-phase module, 50b second integral single-phase module, 50c third Integrated single-phase module, 50d Fourth integrated single-phase module, 100 switchgear. *

Claims

It is enclosed in a cylindrical vacuum vessel, and a fixed side electrode and a movable side electrode constituting a switch,
Provided at the end of the vacuum vessel, connected to the fixed-side connection conductor for current extraction, and fixed-side electrode rod connected to the fixed-side electrode,
An electromagnetic operating mechanism disposed outside the vacuum vessel and having a linear drive shaft for linear drive;
A movable side electrode rod connected to the movable side electrode and coupled to the linear drive shaft of the electromagnetic operating mechanism via an insulating support rod disposed inside the vacuum vessel;
For current extraction from the movable side electrode rod, comprising the vacuum container, a movable side connection conductor covered with a mold insulator together with the fixed side connection conductor,
The fixed side electrode, the movable side electrode, the fixed side electrode rod, the linear drive shaft of the electromagnetic operation mechanism and the central axis of each of the movable side electrode rods are fixed in a state where they are arranged on the same line, The switch gear according to claim 1, wherein the electromagnetic operation mechanism is an integral single-phase module fixed to the mold insulator.
It is enclosed in another cylindrical vacuum vessel, and a fixed-side ground electrode and a movable-side ground electrode that constitute a ground switch,
A fixed-side ground electrode rod provided at an end of the another vacuum vessel, connected to the fixed-side connection conductor for current extraction, and connected to the fixed-side ground electrode;
Another electromagnetic operation mechanism having another linear drive shaft that is arranged to face the electromagnetic operation mechanism outside the other vacuum vessel and linearly drives;
A movable-side ground electrode rod connected to the movable-side ground electrode and coupled to the other linear drive shaft of the another electromagnetic operation mechanism;
With
The fixed side electrode, the movable side electrode, the fixed side ground electrode, the movable side ground electrode, the fixed side electrode rod, the fixed side ground electrode rod, the linear drive shaft, the another linear drive shaft, the movable side The center axis of each of the electrode bar and the movable side ground electrode bar is fixed in a state of being arranged on the same line,
The vacuum vessel, the separate vacuum vessel, the fixed-side connection conductor, and the movable-side connection conductor are covered with the mold insulator, and the electromagnetic operation mechanism and the another electromagnetic operation mechanism are the mold insulator. The switchgear according to claim 1, wherein the switchgear is another integral single-phase module fixed to the frame.
The switchgear according to claim 2, wherein a plurality of the integrated single-phase modules or the other integrated single-phase modules are arranged in parallel so as to correspond to a plurality of phases.
The fixed-side connection conductor or the movable-side connection conductor has a molded part molded into a convex shape by the mold insulator,
The connection between the integrated single-phase module and the another integrated single-phase module is performed by using a connection module in which a conductor is arranged at the center and the both ends are formed by another mold insulator having a concave shape. Item 4. The switchgear according to item 3.
The fixed-side connection conductor or the movable-side connection conductor has a molded part formed into a concave shape by the mold insulator,
The connection between the integrated single-phase module and the another integrated single-phase module is performed by using a connection module in which a conductor is arranged at the center and the both ends are formed by another molded insulator having a convex shape. Item 4. The switchgear according to item 3.
The switchgear according to any one of claims 1 to 5, wherein the switch is a circuit breaker or a disconnecting switch.
The switchgear according to any one of claims 1 to 6, wherein the outer surface of the mold insulator is grounded by a conductive paint or resin.
The electromagnetic operation mechanism changes the distance between the fixed side electrode and the movable side electrode to change the movable side electrode to a cutoff position and a disconnector position, and the switch to the breaker. The switchgear according to claim 6, wherein the switchgear is a composite switchgear for the disconnector. *