JPH0591610A - Gas insulated electric appliance - Google Patents

Abstract

(57) [Summary] [Objective] To provide a device that is not subject to transportation restrictions by dividing the tank in the height direction. [Constitution] The tank is connected via a flange so that it can be divided into dimensions within the height limit during transportation. In addition to this structure, the electrical equipment at the flange connection portion has a structure for inserting from above. Further, both tanks are connected to each other via a flange protruding inward in the radial direction. Alternatively, the tanks are connected via flanges projecting radially inward and outward respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention provides a circuit breaker and a switch for SF
₆ Gas-insulated electric appliances such as closed switchgear stored in a gas pressure tank.

[0002]

2. Description of the Related Art FIG. 8 is a side view showing an example of the configuration of a conventional gas-insulated electric appliance. A tank 2 and a control box 6 are installed on the common base 1. The tank 2 includes a shut-off chamber 2A for storing a circuit breaker and a current transformer, a switch chamber 2B for storing a grounding switch and a disconnector, a cable chamber 2C for connecting an internal main circuit to a load cable, and a lightning arrester. It comprises an arrester chamber 2D for accommodating and a PT chamber 2E for accommodating a transformer for measuring instrument, which are connected to each other via flanges. Also,
Two busbar chambers 2F for connecting the internal main circuit to another line are connected to the shutoff chamber 2A. Stands 3, 4, 5
Is for fixing the cable chamber 2C, the arrester chamber 2D, and the PT chamber 2E to the common base 1 by adjusting their heights.

[0003]

However, the conventional device as described above has a problem in that the height of the device must be within the transportation limit, so that the components to be incorporated in the tank are restricted. For example, when transporting on ordinary roads, the distance from the ground to the maximum value on the truck must be within 3.8 meters. Therefore, it is necessary to manufacture the gas insulated electric appliance so that the value obtained by adding the height H in FIG. 8 and the height from the ground to the bed of the truck is 3.8 meters or less. In the past, due to the restriction of the height H, the number and size of the parts to be incorporated in the tank were limited, which hindered the compounding of equipment, the increase in capacity, and the increase in voltage.

An object of the present invention is to provide a device which is not restricted in height during transportation by dividing the tank in the height direction.

[0005]

In order to achieve the above object, according to the present invention, in a case where an electric device is housed in a tank together with an insulating gas, the tank has a size within a height limit during transportation. It shall be separably connected via a flange, and in addition to such a configuration, the electrical equipment near the flange connection part shall have a plug-in structure from above. Further, in the above configuration, both tanks are connected via a flange protruding inward in the radial direction, or the tank protrudes inward and outward in the radial direction, respectively. It shall be connected via a flange.

[0006]

According to the structure of the present invention, since the tank is connected through the flange so as to be divided into dimensions within the height limit during transportation, the height of the device can be freely manufactured.

In addition to the above construction, the electrical equipment of the flange connection portion is of a structure that is inserted from above,
The internal electrical equipment can be easily connected when flange connection is performed during on-site installation.

Further, in the above structure, since the tanks are connected to each other through the flanges that project inward in the radial direction, the tanks are connected to each other without forming a projecting portion on the outer peripheral side of the tanks. be able to.

Alternatively, in the above structure, since the tanks are connected via the flanges protruding inward and outward in the radial direction, respectively, the worker can perform the connecting work of the tanks outside the tanks. You can

[0010]

EXAMPLES The present invention will be described below based on examples.
FIG. 1 is a side view showing the configuration of a gas insulated electric appliance according to an embodiment of the present invention. Shut-off chamber 21, which constitutes the tank 20,
22 is separably connected via a flange. Other configurations are the same as those of the conventional device of FIG. 8, and the same reference numerals are used for the same portions, and detailed description thereof will be omitted.

FIG. 2 is a sectional view taken along line AA of FIG. Both the shut-off chambers 21 and 22 are connected via flanges 21A and 22A which project outward in the radial direction.

3 and 4 are side views of the upper and lower devices, respectively, when the device of FIG. 1 is divided for transportation.
In the upper apparatus in FIG. 5, a temporary lid 22B is arranged on a flange 22A which is a divided portion of the shutoff chamber 22, and the total height H ₁ is within the transportation limit. Further, the lower device in FIG. 4 is a flange 21A which is a divided portion of the shutoff chamber 21.
The temporary lid 21B is arranged on the above, and the total height H ₂ is within the transportation limit. Since H ₁ + H ₂ may exceed the transport limit, it is possible to further increase the capacity and combine the electric equipment in the tank as compared with the conventional one.

FIG. 5 is a side view showing the construction of the essential parts of a gas insulated electric appliance according to a different embodiment of the present invention. Only the outer peripheral tanks of the shut-off chambers 21 and 22 having the configuration shown in FIG. 1 are shown in half so that the internal configuration of the electric device can be seen. The electric devices are arranged in the tank together with the three-phase main circuit. A current transformer 24 that surrounds the main circuit conductor 23 is arranged in the cutoff chamber 22, and a breaker 26 that opens and closes the main circuit conductor 25 is arranged in the cutoff chamber 21. Main circuit conductor 23, 25
One end is drawn into the opening / closing chamber 2B and the busbar chamber 2F, respectively, and the other end is conductively connected so that the insertion portion 23A (dotted line) and the receiving portion 25A attached to the tips respectively fit each other. In the on-site installation of the tank, by simply lowering the shutoff chamber 22 integrated with the current transformer 24 and the main circuit conductor 23 from the upper portion to the shutoff chamber 21,
Since the insertion portion 23A and the receiving portion 25A fit together,
On-site installation work becomes very easy.

FIG. 6 is a sectional view showing the structure of the essential parts of a gas insulated electric appliance according to a further different embodiment of the present invention.
It is a modification corresponding to the configuration diagram of FIG. A flange 21 in which both the shut-off chambers 21 and 22 protrude inward in the radial direction.
It is connected via C and 22C. With this configuration,
The tanks can be connected to each other without forming a protrusion on the outer peripheral side of the tanks.

FIG. 7 is a sectional view showing the construction of the essential parts of a gas insulated electric appliance according to a further different embodiment of the present invention.
It is a different modified example corresponding to the configuration diagram of. Shut-off chamber 21,
22 are connected via flanges 21D and 22D which respectively project inward and outward in the radial direction. With this configuration, the worker can perform the connecting work of the tank outside the tank, which makes the work very easy.

[0016]

As described above, according to the present invention, since the tank is connected through the flange so that the tank can be divided into dimensions within the height limit during transportation, the electric device in the tank has a large capacity and a high voltage. It has become possible to integrate and composite.

In addition to the above construction, the electrical equipment of the flange connection portion is of a structure that is inserted from above,
Local installation work for the equipment has become much easier.

Further, in the above structure, since both tanks are connected to each other through the flanges that project inward in the radial direction, the efficiency of the installation space of the common base of the tanks and the aesthetics are improved. It was

Further, in the above structure, the tanks are connected via the flanges protruding inward and outward in the radial direction, respectively, so that the connecting work of the tanks becomes very easy.

[Brief description of drawings]

FIG. 1 is a side view showing the configuration of a gas insulated electric appliance according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a side view of the upper device when the device of FIG. 1 is split for shipping.

FIG. 4 is a side view of the lower device when the device of FIG. 1 is split for shipping.

FIG. 5 is a side view showing a main configuration of a gas insulated electric appliance according to another embodiment of the present invention.

FIG. 6 is a sectional view showing the configuration of the essential parts of a gas insulated electric appliance according to a further different embodiment of the present invention.

FIG. 7 is a sectional view showing the configuration of the main parts of a gas insulated electric appliance according to a further different embodiment of the present invention.

FIG. 8 is a side view showing a configuration example of a conventional gas-insulated electric appliance.

[Explanation of symbols]

 1 common base 20 tank 21 shut-off chamber 22 shut-off chamber 2B open / close chamber 2C cable room 2D arrester room 2E PT room 2F busbar room 3 mount 4 mount 5 mount 6 control box 21A flange 21C flange 21D flange 22A flange 22C flange 22D cover flange 21D flange 21D 22B Temporary lid 23 Main circuit conductor 25 Main circuit conductor 24 Current transformer 26 Circuit breaker 23A Insert part 25A Receiving part

Claims (4)

[Claims] 1. A gas insulation in which an electric device is housed in a tank together with an insulating gas, and the tank is connected via a flange so as to be divided into dimensions within a height limit during transportation. Electric appliances. 2. The gas-insulated electric appliance according to claim 1, wherein the electrical equipment near the flange connection portion has a structure of being inserted from above. 3. The gas insulated electric appliance according to claim 1 or 2, wherein the tanks are connected together via a flange projecting inward in the radial direction. 4. The gas insulated electric appliance according to claim 1 or 2, wherein the tanks are connected to each other via flanges projecting radially inward and outward, respectively.