JPH01304710A - Gas insulating inductive instrument - Google Patents

Abstract

PURPOSE:To improve the cooling efficiency by eliminating a gas flow not contributing to cooling, and eliminate use of a lower end frame packing, by integrally uniting a flange-shaped part outer periphery of the lower end frame with an upper end of a lower tank by welding. CONSTITUTION:A lower tank 60b, which is independently constructed from an upper tank 6a, is welded and integrally united air-tightly circumferentially with a flange-shaped part 51 outer periphery of a lower end frame 5 at an upper end thereof. The upper tank 6a is mounted on the upper portion of a structure so welded through proper means. Accordingly, insulating gas is prevented from flowing through a space between the tank 6 and a coil outer cylinder 10, and is allowed to flow only through a passage 3 for cooling a coil 1 and an iron core 2. Thus, the insulating gas is prevented from leaking outside the cooling passage and hence no packing for the lower end frame 5 is required.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an induction device using an insulating gas such as SFa gas, and particularly relates to improvement of cooling performance.

[Conventional technology]

An iron core reactor (hereinafter referred to as a gas insulated reactor) having a plurality of gaps as a conventional SF6 gas insulated induction device was constructed as shown in FIG.

In the figure, (1) is the coil, (2) is the core, (3) is the insulating gas passage, and (4) and (5) are the upper and lower end frames that tighten and fix the core (2). be. This lower end frame (5) has a flanged portion (51) and a communication port (52) that communicates with the passageway (3) provided in the flanged portion (51). . (6) is a tank, and the above (1) and (2)
, (3) , (has an upper tank (6a) 2 for housing the internal structure constituted by 41 etc.) and an inlet part (7) for insulating gas, and insulating gas introduced from this inlet part (7). It consists of a lower tank (6b) which feeds into the passage (3) via the communication port (52), in this case formed in one piece.

Note that (8) is the upper gas outlet, (9) is the insulating tube between the iron core and the coil, (10) is the coil outer insulating tube, (11) is the gas flow stopper plate, and (12) is the lower end frame - gas flow stopper plate. It's a bit of a bit of a bit of a bit of a bit of a bit of a bit of. In addition, the passage (3) is connected to the insulating cylinder (91, (10)).
and a partition member (31) for meandering upward.

Next, the operation will be explained. Coil (11, iron core (2)
is assembled in advance with the upper end frame (4), lower end frame (5), etc., and is stored in the tank (6). (6) The gas flow stopper plate (11) installed in K is structured to stop the flow of gas that does not contribute to cooling, and the passage (3) that cools the coil (1) and iron core (2) is shown as shown by the solid line arrow B. The structure through which insulating gas flows was damaged.

[Problem to be solved by the invention].

In the conventional structure, the brim portion (51) of the lower end frame (5) and the gas flow stopper plate (11) are joined via a packing (12) to avoid dimensional errors.

Therefore, in addition to the gas flow that contributes to cooling (solid line arrow B in Figure 2), a gap (not shown) is formed in which a gas flow that does not contribute (broken line arrow C in Figure 2) occurs, and the cooling gas flow is There was a problem in that it was not possible to determine what was needed.

This invention was made in order to solve the above-mentioned problems, and by completely eliminating the gas flow that does not contribute to cooling, it improves cooling efficiency compared to K, and also eliminates the need for packing on the lower end frame. The purpose is to obtain gas-insulated induction equipment.

Means for Solving Problem C] The gas insulated induction device according to the present invention is constructed by welding the outer circumference of the brim-shaped portion of the lower end frame and the upper end of the lower tank into an integral structure.

[For production]

In the present invention, the lower tank and the lower end frame are integrally connected by welding, thereby eliminating the need for packing and, moreover, reliably feeding insulating gas, which is a cooling medium, into the course.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, (60b) is a lower tank, which is constructed separately from the upper tank (6a). The upper end of the lower tank (60b) is airtightly welded along the circumferential direction to the outer periphery of the flange-shaped portion (51) of the lower end frame (5), and is integrally coupled. In addition, the upper tank (6a)
is attached by appropriate means above these joined structures.

The communication port (52) of the lower end frame (5) is reliably connected to the passage (3), and the lower tank (60b) and the lower end frame (5) are airtightly joined by welding. Therefore, the insulating gas does not leak into the space between the tank (6) and the coil outer cylinder (10) as shown in FIG. Therefore, the gas flow is completely connected to the coil (1) and the iron core (2).
) will flow only through the passage (3) that cools the air.

In addition, the flange-shaped portion (52) of the lower end frame (5) shown in FIG.
Since there is no need for a gasket between the gas flow stopper plate (11) and the gas flow stopper plate (11), there is also the additional effect that vibrations and cracks due to incomplete contact are no longer generated.

In the above embodiment, the structure is such that the insulating gas is not allowed to flow into the space between the tank (6) and the coil outer cylinder (10), but local heating of the tank due to leakage magnetic flux does not occur.

Therefore, by providing appropriate vent holes, it is also possible to prevent local heating of the tank.

By the way, in the above embodiment, the case where the present invention is used in a gas insulated reactor has been described, but it is not necessarily limited to this, and it goes without saying that it can be used in a gas insulated induction device for boat fishing. Furthermore, it is a matter of course that the insulating gas is not limited to SFs gas.

〔Effect of the invention〕

Since they are configured to be physically connected, it is possible to completely eliminate leakage of insulating gas to the outside of the cooling passage, and to obtain a gas insulated induction device that eliminates the need for packing on the lower end frame.

[Brief explanation of the drawing]

FIG. 1 shows a gas according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a main part showing a glue handle as an edge guiding device, and FIG. 2 is a cross-sectional view of a conventional device. In the figure, (1) is a coil, (2) is an iron core, (3) is a passage,
(5) is the lower end frame, (51) is the brim, (52) is the communication port, (6a) is the upper tank, and (60b) is the lower tank. In each figure, the same reference numerals indicate the same or corresponding parts. Agent Zeng Wa Michi Teru, : Ko 1 Figure 1: Fill 51, Even selection section 52 Reverse L0 6a E death 2ri 60b Shimo Ikutashi 2

Claims (1)

[Claims] An iron core, a coil electromagnetically coupled to this iron core,
An insulating gas passage provided to cool the coil and the iron core, a lower end frame provided with a flange-shaped part provided at the bottom of the passage and having a communication port communicating with the passage, this lower end frame An upper tank is provided at the upper part of the tank and surrounds the core, coil, and passage, and an upper tank is provided at the lower part of the upper tank and has an inlet for insulating gas, and the insulating gas introduced from the inlet is passed through the communication port. A gas insulated induction device equipped with a lower tank for feeding the gas to the passage through the gas insulated induction device, characterized in that the outer circumference of the brim-like part of the lower end frame and the upper end of the lower tank are integrally joined by welding. Gas insulated induction equipment.