JPS61277182A - Slip ring unit for high voltage - 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 [Technical Field of the Invention] The present invention relates to 1. a slip ring for supplying power or electrical signals to rotating electrodes;

[Technical background of the invention and its problems] Conventionally, high-voltage cables, etc. have been used to supply high-voltage power or electric signals to swinging devices, but the high-voltage cables, etc. Depending on the size of the high-voltage cable, the length of the high-voltage cable can be adjusted to follow the oscillation, but in order to supply high-voltage power or electrical signals to a device that rotates continuously in one direction, the high-voltage cable must be adjusted. Since it cannot be supplied, a slip ring is used. In addition, when supplying high-voltage power or electrical signals with the slip ring, for example, air,
Gas insulation is sometimes performed using sulfur hexafluoride, freon, etc., but in such gas-insulated slip rings, there is no possibility of moisture coming from the sealing part of the member covering the slip ring part or other parts. Abrasion particles generated by contamination and friction between the brush protruding from the slip ring and the rotating electrode adhere to the slip ring, resulting in a large drop in withstand pressure, thereby causing a discharge phenomenon, and as a result, the slip ring This has caused problems such as damage to parts and destruction of other devices to which power or electrical signals are supplied by the slip ring, making recovery impossible.

``Purpose of the Invention'' The present invention was made in view of the above circumstances, and it provides a high-voltage device with stable performance over a long period of time by forcibly removing wear particles and moisture attached to the slip ring part. The purpose is to provide a slip ring device for.

[Summary of the Invention] The present invention for achieving the above object includes a slip ring attached to a fixed frame, and a rotating member rotatably provided on the fixed frame and supporting a power supply unit that contacts the slip ring. A high voltage slip ring device comprising a frame and a gas filled between the stationary frame and the rotating frame, wherein the frame is provided with a gas outlet and an inlet, and a circulation and filtering means is provided between each gas inlet and outlet. A high voltage slip ring device featuring the following features.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an assembly diagram including a cross section of the high voltage slip ring device of the present invention. In the figure, the high voltage slip ring device includes a frame 1 to which a slip ring is fixed, a rotating frame 2 rotatably held by the frame 1 via a bearing 3, and a rotating frame 2 fixed to the rotating frame 2. A suction hole 8 is provided in the slip ring brush 5, the slip ring 4 fixed to the frame 1 that comes into contact with the slip ring brush 5, and the rotating frame 2 at a position facing the slip ring 4 and sandwiching the slip ring 4.
a, a discharge hole 8b, a suction tube j6a that connects the suction hole 8a, the filter 7b, and the adsorbent 7a, a circulation pump 9 connected to the filter 7-tl, the circulation pump 9, and the discharge hole 8b. and a discharge tube 6b for piping
It consists of

With the above configuration, for example, sulfur hexafluoride (SFs) is filled between the fixed frame 1 and the rotating frame 2.
) Abrasion powder, moisture, etc. attached to or floating on the slip ring 4 and the slip ring brush 5 themselves or their surroundings in the insulating gas are adsorbed through the suction tube 6a from the suction hole 8a provided in the rotating frame. Agent 7
a, the adsorbent 7 is guided by the circulation pump 9
removing moisture from the slip ring 4 and slip ring brush 5 portions by the adsorbent 7a;
Next, abrasion powder and the like are removed by a filter 7b, and the cleaned gas is returned between the fixed frame 1 and the rotating frame 2 through the exhaust tube 6b and the exhaust hole 8b.

As mentioned above, circulating the gas filled between the fixed frame 1 and the rotating frame 2 has caused problems in the past, such as abrasion particles generated by friction between the slip ring 4 and the slip ring brush 5, or e.g. Decrease in pressure resistance caused by moisture intrusion from seal parts or other parts of the parts covering the parts,
The discharge phenomenon caused thereby can be prevented.

The present invention is not limited to the above embodiments, but can be implemented with appropriate changes within the scope of the gist of the present invention. Further, as a modified example of the first embodiment, FIG. 2 shows an assembly diagram including a cross section thereof. In this way, the pipe resistance may be reduced by directly attaching the adsorbent from the suction hole 8a.

[Effects of the Invention] As detailed above, the present invention provides a high-voltage slip that has stable performance over a long period of time by forcibly removing abrasion powder and moisture attached to the slip ring and slip ring brush. We can provide a ring device.

[Brief explanation of drawings]

FIG. 1 is an assembled view including a cross section of the high voltage slip ring device of the present invention. FIG. 2 is an assembly diagram including a cross section of a modified example of the high voltage slip ring device of the present invention shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... Frame, 2... Rotating frame, 3... Bearing, 4... Slip ring, 5... Slip ring brush, 6a... Suction tube, 6b... Discharge tube, 7a... ...Adsorbent, 7b...Filter, 8a...Suction hole, 8a...Discharge hole, 9...Circulation pump. Agent Patent Attorney Noriyuki Chika (1 idiot) Figure 1

Claims (1)

[Claims] A slip ring attached to a fixed frame, a rotating frame that is rotatably provided on the fixed frame and supports a power supply unit that contacts the slip ring, and a gas filled between the fixed frame and the rotating frame. A high-voltage slip ring device characterized in that the frame is provided with a gas outlet and an inlet, and a circulation and filter means is provided between each gas inlet and outlet.