JPH11224818A - Air extracting device for test - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air extracting device for test, which can be connected easily to a stationary induction apparatus using gas-oil insulating spacers by reducing the adverse effects to the environment without lowering the quality of reliability. SOLUTION: The quantity of an insulating gas 7 is reduced by constituting an air extracting device for oil-immersed test in such a way that the device can be slip-on connected to a gas-filled connection adapter 5 and a stationary induction apparatus by using a plurality of gas-oil insulating spacers 4a. Since the insulating gas 7 is only enclosed in an insulating gas-filled connection adapter 11 by slip-on connecting an air extracting device adapter 9 for oil-immersed test, the adapter 11, and the adapter 5 to each other by using the gas-oil insulating spacers 4a and 4b and a conductor lead wire 6a, the quantity of the insulating gas 7 used can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electric device having an insulating oil and an insulating gas.

[0002]

2. Description of the Related Art A test air drawer connected to a stationary induction device connected to a gas-insulated device using a gas-to-oil insulation spacer directly connects to a gas-to-oil insulation spacer attached to the stationary induction device. Attach an air drawer for the insulation gas filling test, or connect an air bushing to any location on the stationary induction device side from the gas-to-oil insulating spacer attached to the stationary induction device side to allow the test to be performed. It is a drawer device.

A conventional test air drawer will be described with reference to the drawings. FIG. 2 is a diagram showing a structure in which an insufflation device for an insulation gas filling test is directly attached to a gas-to-oil insulation spacer attached to a stationary induction device side. It comprises a drawer adapter 2, a gas-to-oil insulating spacer 4, a stationary induction equipment adapter 5, and a conductor lead 6. The air draw-out device for the insulating gas filling test and the stationary induction device are connected by a slip-on terminal 3. An insulating gas 7 is sealed in the adapter 2 for the air drawer for the insulating gas sealing test, and an insulating oil 8 is sealed in the adapter 5 for the stationary induction device.

FIG. 3 is a diagram showing a structure in which an air bushing is attached to a stationary induction device side. The air bushing 1, a gas-to-oil insulation spacer 4, a stationary induction device adapter 5, and a conductor lead wire 6 are used. It is configured. An insulating oil 8 is sealed in the stationary induction device adapter 5. The conductor lead wire 6 connected to the gas-to-oil insulating spacer 4 at the time of the test is replaced with the air bushing 1 to provide a test air drawer.

[0005]

In the prior art shown in FIG. 2, it is necessary to mount a test air drawer before the start of the test of the stationary induction device and to fill the insulating gas. Since the volume of the apparatus is large, a large amount of insulating gas is required, and much time is spent for filling the insulating gas. In addition, after the test of the static induction device is completed, it is necessary to remove the test air drawer, but at that time, the enclosed insulating gas was released to the atmosphere without being recovered. Insulating gas has been found to have a negative impact on the environment in recent years,
It has been desired to use as little as possible.

[0006] In the conventional technique shown in FIG. 3, it is necessary to change the connection of the conductor lead wires inside the stationary induction equipment adapter, to remove the insulating oil, and to lubricate the product. There is a concern that the above reliability will decrease. In addition, since a structure for mounting the test air bushing to the stationary induction device is used, and a problem of increasing the size of the device occurs, a test air drawer device that can be easily connected has been required.

In the present invention, in view of the above-described problems, a static induction device using a gas-to-oil insulating spacer can be easily reduced without adversely affecting the environment and without lowering the reliability of quality. It is an object of the present invention to provide a test air drawer that can be connected.

[0008]

According to the present invention, there is provided a test aerial drawer using a plurality of gas-to-oil insulating spacers, an oil-filled aerial drawer, an insulating gas-filled connection adapter, and a stationary induction device. Are characterized by the reduction of the amount of insulating gas, the miniaturization by using an air draw-in device for oil-in test, and the improvement of the reliability of the stationary induction device by the structure in which are connected by slip-on.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an embodiment of the present invention, and the structure of the present invention is as follows. A gas-to-oil insulating spacer 4a is attached to an oil immersion test inflation device adapter 9 to which an aerial bushing 1 is attached, and an insulating oil 8 is sealed. The air bushing 1 is connected to the fixed terminal 10 of the gas-to-oil insulating spacer 4a by a conductor lead wire 6. On the stationary induction device side, a gas-to-oil insulating spacer 4b is attached to the stationary induction device adapter 5 and the insulating oil 8 is sealed. The insulating gas-filled connection adapter 11 has a structure sandwiched between the stationary induction device adapter 5 and the oil immersion test insufflation device adapter 9, and the gas-to-oil insulation spacer 4a and the gas-to-oil insulation spacer 4b are connected by conductor leads. It is connected to the slip-on terminal 3 using the wire 6a,
Is enclosed.

[0010]

According to the present invention, the amount of insulating gas can be reduced,
Since the time required for filling and recovering the gas is facilitated and the test air drawer is connected to the outside of the static induction device, the reliability of the static induction device in terms of quality does not decrease.
Further, since only the portion in which the insulating gas is sealed is formed as a pressure vessel, there is an advantage that the pressure resistance is increased.

[Brief description of the drawings]

FIG. 1 is a structural view showing one embodiment of a test air drawer of the present invention.

FIG. 2 is a structural view showing an example of a conventional test air drawer.

FIG. 3 is a structural diagram showing another example of a conventional test air drawer.

[Explanation of symbols]

 1. Aerial bushing 2. 2. Air drawer adapter for insulation gas filling test Slip-on terminal 4.4a. 4b. Gas-to-oil insulation spacer 5. Stationary guidance equipment adapter 6.6a. 6. Conductor lead wire 7. Insulating gas Insulating oil 9. 9. Oil drawer air drawer adapter Fixed terminal 11. Insulation gas filled connection adapter

Claims (1)

[Claims] 1. A test air draw-out device for a stationary induction device connected to a gas-insulated device using a gas-to-oil-insulated spacer. Uses an aerial withdrawal device for oil-injection type test, with a structure in which the aerial withdrawal device, insulating gas-filled connection adapter, and oil-filled static induction device are connected by slip-on inside the insulated gas-filled connection adapter. A test air draw-out apparatus characterized in that it is downsized, and the reliability of pressure resistance is improved by using only an insulating gas filled connection adapter as a pressure vessel.