JPH0398407A - Gas isolated switchgear - Google Patents

Abstract

PURPOSE:To operate operating devices in minimum number by movably installing the operating devices in an operating box, in which a plurality of disconnectors and the power transmission shaft of a ground switch are arrayed, and detachably connecting said power transmission shaft and the output shafts of the operating devices. CONSTITUTION:An operating box 8 is mounted onto the side face of a vessel in which disconnectors DS1-DS4 and ground switches ES0-ES4 and the like are housed. Power transmission shafts 17-20 are connected mechanically to the disconnectors DS3, DS4, DS1 and the ground switch ES0 by levers, etc., respectively. One electric spring operating device 27 working the disconnectors DS3, DS4, DS1 and the ground switch ES0 respectively is slid to the left and the right by the revolution of screw rods 21, 22 in front of the power transmission shafts 17-20. The output shaft of the electric spring operating device 27 is connected to either of the power transmission shafts 17-20 by the operation command of a controller installed on the outside, and the corresponding disconnector or switch is switched. Likewise, the ground switches ES1, ES3, ES4 are worked by one manual operating device 50.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas insulated switchgear (hereinafter referred to as 318).

[Conventional technology]

FIG. 5 shows a single-wire connection structure of a GIS that constitutes a transmission line transformer circuit used in a power distribution substation, and FIGS. 6 and 7 show its external appearance.

In Figure 5, (GCB) is a gas circuit breaker, (DS+
) ~ (DS4) are disconnectors, (ESo) ~ (f', 'S4
) is the earthing switch, 1 (LA) is the lightning arrester, the disconnect switch (DSI), (DS2
) and the earthing switch (ESt) and (E82) each have an interlocking operation structure.

As shown in FIGS. 6 and 7, these components are housed in a rectangular container (11), which is filled with an insulating gas such as SFs gas.

In Fig. 7, the right side of the container (1) has cable connection parts (41, (5) to which the cable head (2) of the line lead-in cable and the cable head (3) of the busbar connection cable are connected, respectively. is provided, and a container (1)
A bushing (7) is installed on the left side of the
), which is connected to the primary side of the transformer.

Furthermore, as shown in FIG. 8, the operation box C81 disposed on the front side of the container +11 includes an operation device (9>) for operating a gas circuit breaker (GCB), a disconnector (D8+), (Da:1 ), (
Electric spring actuators on, (+1), 02, Q that operate the DS4) and earthing switch (Ego), respectively.
3. Ground open M h (ES') * ("S3) #
(""") Manual operation iMQ4)
, αe, and Q* are stored together.

[Problem to be solved by the invention]

In the above-mentioned structure 018, for a plurality of disconnectors and earthing switches, there is an operation device rto corresponding one-to-one.
- Since the controller is equipped with n5 and stored all at once in the operation box (8), it not only increases the number of controllers and makes them expensive;
There is a drawback that a large storage space is required within the operation box (8).

The present invention has been made with the above-mentioned conventional drawbacks in mind, and its purpose is to provide an 018 that can operate a plurality of disconnectors, earthing switches, and other devices with a minimum number of operating devices. It is something to do.

[Means to solve the problem]

In order to achieve the above object, in the GIS of the present invention, the power transmission shafts of devices such as a plurality of disconnectors and earthing switches are arranged in an operation box, and the operation devices are arranged in the operation box. movably provided at the arrangement position of each of the power transmission shafts,
The present invention is characterized in that the output shaft of the operating device is provided with a connecting means that is detachably connected to any of the power transmission shafts.

[Effect]

When operating any device out of multiple disconnectors, earthing switches, etc., move the operating device, place its output shaft at the position of the power transmission shaft of the device, and connect the device to output the output. A shaft is connected to this power transmission shaft.

Therefore, the rotational force of the output shaft of the operating device is transmitted to the power transmission shaft via the connecting means, and it is possible to open and close any device.

〔Example〕

Examples will be explained using FIGS. 1 to 4.

Note that the same symbols as above indicate the same or equivalent items.

First, one embodiment will be explained using FIGS. 1 to 3.

Figure 1 shows ゜gas circuit breaker (GCB), disconnector (D8+
) ~ (DS4) , Earthing switch (ESo) ~ (ES4)
This shows the operation box f8) on the side of the rectangular container <<1>> that houses the lightning arrester (IA), a'h. QS
．． act and kan are each square containers (11 disconnectors (
It is a power transmission shaft that is mechanically connected to the DS+), (DS4), (DSl) and the earthing switch (ESo) by levers, ronds, etc., and the square shaft-shaped tip is located inside the operation box r81. After that, the wall was introduced, and the operation box [
8) are arranged at equal intervals in the left and right direction at the top of the box.

Cυ and @ are arranged above and below the power transmission shafts α to (1), respectively, and are fixed to the rear wall of the operation box (8). It is a horizontally threaded rod that is rotatably supported, and one end of each is a drive box. It is connected to an electric motor housed in (e), and both threaded rods (21) and w are driven to rotate in the same direction at the same time.

(b) is a disconnector (D8g), (DS4),
(D8 1) and the earthing switch (F; So), and as shown in Figure 2, there is a slide with internal threads on the top and bottom of the rear surface of the operating device (5). The moving body handle and the handle are the legs (to) respectively. A sliding body (support) with υ, which is supported via LI+). Attach a threaded rod (
21) , q are screwed through, and both threaded rods c21) , E
The sliding body is rotated forward and backward. The handle is a threaded rod c2υ
, the handle is slid left and right, and the operating device moves left and right in front of each of the power transmission shafts α to (1).

(32 is the output shaft of the actuator @, power transmission shaft Q7) ~
It is placed at the same height as the wing, and has a square shaft-like tip. It is guided backwards like the workpiece (e). (The rope is a shaft connecting metal fitting that has a square hole fitted onto the tip of the output shaft (32) so that it can slide freely in the axial direction of the output shaft and is integrally attached in the rotational direction. Yes, when the output shaft (32) is opposed to any power transmission shaft, the shaft connecting fitting is slid rearward and fitted across the output shaft ■■■ and the power transmission shaft. Accordingly, the power transmission shaft is connected to an output shaft (32).

An example is a return lever that is rotatably supported by a support shaft on the rear of the operating device and is biased by a central spring. comes into contact with from behind,
Shaft connection fitting (forces the rope forward.

G7) is a connecting lever that is rotatably supported by a support shaft within the operating device, and has a pair of pressing pieces (17a) at the tip.
), (87 a), which abuts the front surface of the shaft coupling fitting (33) on both sides of the output shaft diagram. (39)
is an electromagnetic solenoid, and the suction rod (40) is connected to the base of the connecting lever (39), and the lever is rotated by the suction operation of the electromagnetic solenoid (39), and its suppression piece (37a), (9-axis connection fittings (33 to 370)
) is suppressed backwards.

(41). @2. (4:1 C rectangular container (earthed opening/closing u<sss> in 11. (ES4), (f; S+) are each operated by power transmission shafts mechanically connected by levers, rods, etc.) They are introduced into the box +8) from the rear wall and are arranged at equal intervals in the vertical direction on the right side of the circuit breaker operating device (9).

(441. f4f9 is the power transmission shaft (4l) ~ (c)
Bearings 1461. are arranged on the left and right sides of the bearing 1461. (F).
f47). [47) These are vertical threaded rods rotatably supported by the drive box f48).
(They are simultaneously driven to rotate in the same direction by an electric motor housed in the 49+.

(50) is the earthing switch (E81), (E811), (E
S4), respectively, with one manual actuator, and as in the case of the electric spring actuator, both threaded rods (44).
161, and moves up and down in front of the power transmission shaft f41) through the rotation of both threaded rods (b) and 4.

The output shaft led out from the rear surface of this manual operating device (50) is connected to each power transmission shaft (4+) to (
A shaft connecting fitting is attached to this output shaft, and the output shaft is connected to the power transmission shafts (4l) to (41) by the operation of the electromagnetic solenoid in the manual operation device (■). It is connected to either one via a shaft connection fitting.

The wound υ is a push button switch that selects the position of the manual operator ■.

In a GIS configured in this way, any device, such as a disconnector (DSL), can be connected to the disconnector (DS+), (DS8), (DS4), or earthing switch (ESo). When operating the device, input the information to a control device (not shown), and the information of the device will be sent to the drive box (to) as an operation command. (E) Applied to the electric motor in both screw rods 621
) and @ rotate, and the electric spring actuator (a) is the corresponding device. That is, it moves to the position of the power transmission shaft α9 of the disconnector (DS+).

Next, the electromagnetic solenoid (to) 9) is activated, and the output shaft (32 is connected to the power transmission shaft O0 by the shaft connection fitting).
In this state, the controller (5) operates and the disconnector (D8+) opens and closes.

Also, any equipment among the earthing switches (ES+), (ESB), (E84). For example, when operating the earthing switch (E8+), select this device with pushbutton switch a5), and the double screw rod! 44). At rotation 11, the manual operating device 1 moves to the power transmission shaft (position 4) of the corresponding equipment, the earthing switch (E8+), and then the output shaft and the power transmission shaft (c) are connected. .

The earthing switch (E8+) can be opened and closed by manually operating the operating device.

Therefore, according to the structure of the embodiment, a plurality of disconnectors (D
S+) ~ (DS4) and earthing switch (ESo) ~ (ES
4) can be opened and closed using only two devices, an electric spring actuator and a manual actuator '50) with different power sources.
In other words, one operating device for each power source is sufficient for these devices.

In addition, in the above embodiment, instead of rotating the screw rods C21) and @ for the electric spring operating device @ individually, they may be connected and driven to rotate simultaneously by one electric motor. , manual operation device 00) threaded rod (44
)． (The same applies if you press the 4@ button.

Next, FIG. 4 showing another embodiment will be explained.

This embodiment shows a case where an electromagnetic clutch is used as a connecting means to connect the output shaft of the electric spring actuator (5) and any power transmission shaft αD. The first plate O, which is pivoted to the shaft, and the second plate, which is pivoted to the power transmission shaft αD~(E), are removably connected by electromagnetic force obtained by energizing the Koinore transport. This is how it was done.

〔Effect of the invention〕

Since the present invention is constructed as described above, it produces the effects described below.

Since the operating device can be moved and its output shaft connected to any power transmission shaft of multiple devices to operate that device, the operating device can be shared by multiple devices and the number of operating devices can be reduced to the minimum number. In addition to being able to significantly reduce costs, the space required inside the control box can be reduced.
Furthermore, it is possible to obtain effects such as easy maintenance of the operating device.

[Brief explanation of drawings]

1 to 4 show an embodiment of a gas insulated switchgear according to the present invention, and FIGS. 1 to 3 show one embodiment,
Fig. 1 is a front view of the operation box, Figs. 2 and 8 are a cutaway side view and a cutaway plan view showing the connecting portion between the output shaft and the power transmission shaft, and Fig. 4 is a second view of another embodiment. 5 to 7 show a general gas insulated switchgear, FIG. 5 shows a single line connection diagram, and FIGS. 6 and 7 show an overall side view and a front view, respectively. FIG. 8 is a front view of a conventional operation box. (D8+)~(DS4)...Shinjiki, (Ego)~(
ES4)...Earthing switch, α-(1). f41'
1-03...Power transmission shaft, @...Electric spring actuator,
Connection: Shaft connection fitting, (50): Manual operation device, 6: Electromagnetic clutch.

Claims (1)

[Claims] (1) The respective power transmission shafts of devices such as a plurality of disconnectors and earthing switches are arranged in the operation box, and the operation devices are movably provided at the arrangement positions of the power transmission shafts in the operation box. . A gas insulated switchgear, characterized in that the output shaft of the operating device is provided with a connecting means that is detachably connected to any of the power transmission shafts.