JPS609316A - Gas insulated electric device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a gas insulated electrical device whose safety can be confirmed. Gas-insulated electrical devices supported by members, such as gas-insulated switchgear and gas-insulated busbars, are often used.

However, due to increased power demand, land issues, and ease of assembly, it is desirable to downsize and lower the filling gas pressure.11. Therefore, it is conceivable to use a gas superior to SF6 to downsize electrical equipment and reduce gas pressure.

Fluorocarbon gases are considered as such gases, but it is known that certain gases have excellent insulating properties but are somewhat toxic. Therefore, when inspecting electrical equipment, a means is required to confirm the safety after replacing the filling gas with air.

This invention has been made in view of the above, and provides a gas-insulated electrical device in which a microorganism number density indicating member coated with a mixture of a nutrient source and a moisture absorbent capable of growing aerobic microorganisms is disposed in a container. do.

The figures will be explained below. In FIG. 1, (1) is a closed container, and (2) is an insulating gas, which is propionitrile trifluoride (02F5ON). 3) is the bushing, 14
) is the disconnection part, (5) is the breaker part, 16+ is the disconnection part (4)
The conductor connected between the breaker and the breaker (5), the above (4) to f6
1, a conductor (7) is formed. (8) is a door for inspection;
(9) is a microorganism number density display member placed inside the container flll. As shown in Fig. 2, the microorganism number density display member (9) contains a nutrient source for aerobic microorganisms to grow and multiply, such as a powdered nutrient source from which moisture has been removed from a celestial medium and a moisture absorbent. The microbial growth agent (2), which was mixed and solidified under pressure into a pellet form, was applied to an Ih constant base material (9L).

With this configuration, the container (1) is filled with gas (21), that is, the atmospheric pressure of 02F5ON (20°C
), the breakdown voltage ratio with SFe is 1.8. Because of this excellent insulation property, devices can be made smaller.
The filling pressure of the insulating gas (2) can also be approximately atmospheric pressure. When the container (1) is sealed, the microorganism number density display member (5) stops increasing the number of microorganisms as shown in FIG.

Next, the operation will be explained. jl In the situation shown in Figure 1, when inspecting the conductor (7), the insulating gas (2) filled in the container (1) is pumped with a vacuum pump (not shown).
After extracting and collecting the air outside the system and replacing the insulation with air, the container fil is entered through the door (8) and inspected.

At this time, the microorganism decay rate non-indicator tl t'Jl placed in the 'd vessel (11) is replaced with gas and air 1'F,
The air supplied during the operation, as well as the oxygen and microbial growth agents (
9.1) Due to the cause of itching, the microorganism number density display member (
! 1) The floating microorganisms are increased and the microorganism number density increases as shown in Figure 454. The growth of microorganisms in this way means that there is sufficient oxygen and that no body gases remain. Shitakatsu C container (1
) is confirmed.

In addition, if the insulating gas (2) leaks while the Zunawara δ vessel (11) is closed during the operation of electrical equipment, microorganisms will be increased by the oxygen contained in the AL contained in the air. It is displayed on the display member (9).

The one in Figure 5 has an inspection window recessed in the container (1) that allows the inside to be observed when the container (11 is sealed), and a microorganism number density display member (9) located at a position that can be observed through the inspection window recess. to enable inspection of gas leaks while electrical equipment is in operation.
We expect the same effects as in the above embodiment.

In the above embodiments, the -insulating gas is a single gas of 0zFsON, or qzFsON is used at a predetermined ratio.
Even if the gas is a mixture of sON and SF6, the same effects as in the above embodiment can be expected.

According to this invention, a microorganism number density display member coated with a mixture of a nutrient source and a moisture absorbent capable of increasing aerobic microorganisms is placed in a closed container filled with an insulating gas. By observing the density, it is easy to confirm whether the gas remaining in electrical equipment is safe. −

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an electrical device according to an embodiment of the present invention;
FIG. 2 is a perspective view of the microorganism number density display member, FIGS. 3 and 4 are explanatory views showing the growth of microorganisms, and FIG. 5 is an explanatory view of another embodiment. In the figure, (11 is a container, (21 is an insulating gas, (7) is a conductor, and (9) is a microorganism number density display member. In the figure, the same reference numerals indicate the same or equivalent parts. 4゜Representative: Oiwa Increase/, Ilj Figure 1 Figure 2 Figure 31 Clause 4 Figure 4

Claims (1)

[Scope of Claims] 11) A conductor is disposed in a closed container filled with an insulating gas, and the conductor is supported by a solid insulating member, wherein the gas is propionitrile pentafluoride (02F5 ( :
+N), wherein a microorganism number density indicating member coated with a mixture of a nutrient source capable of growing aerobic microorganisms and a moisture absorbent is disposed in the container. (2) A conductor is placed in a closed container filled with an insulating gas, and the conductor is supported by a solid insulating member, in which the gall is propionitrile pentafluoride (0zFsON).
) and sulfur hexafluoride (SF6), and a microorganism number density display member coated with a mixture of a nutrient source that can increase contact with aerobic microorganisms and a moisture absorbent was placed inside the container. A gas insulated electrical device characterized by: