SU1704235A1 - Electrical machine - Google Patents

Abstract

The invention relates to electrical engineering. The aim of the invention is to increase the reliability by reducing the oiling of the current collection assembly. The electric machine comprises a shaft 1 with a node 3 as far as; a current collection with brushes 4. The current collection assembly is closed by a housing 5. The electric machine has a bearing 8 placed in the lubrication chamber 9 separated by a partition 11 with a seal 12 from the collection assembly. The partition 11 consists of an external radial partition 13 and a centrifugal fan 14. When the electric machine is running, the fan 14 circulates cooling air through the skid-collecting current collection unit and removes the coal dust from the casing 5. 1 c. f-ly. 1 il ..

Description

UNION OF SOVIET

SOCIALIST

REPUBLIC

SU <„, 1704235 A1

(505 N 02 K 9 / 26.9 / 28 ____

STATE COMMITTEE

BY INVENTIONS AND DISCOVERIES UNDER SCSTAN OF THE USSR

DESCRIPTION OF THE INVENTION

TO AUTHOR'S CERTIFICATE. 1

(21) 4758616/07 (22) 11/14/89 (46) 01/07/92. Bul, No. 1 (71) Scientific and Production Association Uralelectrotyazhmash them. V.I. Lenin (72) O.L. Weber, S.I.Zhorov, B.A., Rozina. Yu.G. Tarasov and I.A. Schenkman (53) 621.313.713 (088.8) (56) Alekseev A.E. The design of electrical machines. - GL. - L .: SEI, 1958, p. 53. Fig. 2-25.

Japanese application No. 62-29969, cl. H 02 K 5/16, 1982.

(54) ELECTRICAL MACHINE (57) The invention relates to electrical engineering. The aim of the invention is to increase reliability by reducing the oiling of the collector. The electric machine comprises a shaft 1 with a sliding current collection unit 3 with brushes 4. The current collection unit is closed by a casing 5. The electric machine has a bearing 8 located in the lubrication chamber 9, separated by a partition 11 with a seal 12 from the current collecting unit. The baffle 11 consists of an external radial baffle 13 and a centrifugal fan 14. During operation of the electric machine, the fan 14 creates a circulation of cooling air through the sliding current collector and removes coal dust from the casing 5. 1 zp f-ly. 1 il ..

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170423b

The invention relates to electrical engineering and can be ’used in large electric machines with a sliding current collector.’

The purpose of the invention is increased reliability pu (see reducing the oiling of the node of the sliding current collector.

The drawing shows the honor of an electric machine with a current collection unit.

The electric machine comprises a shaft 1, on the upper end of which a agulco 2 is mounted with a sliding current collection unit 3 equipped with carbon brushes 4. The sliding current collection unit 3 is closed by a casing 5 having shutters 6 for cooling air inlet. Below the shaft 1 there is a sleeve 7 and a bearing 8. which are located in the lubricant chamber 9 filled with liquid oil 10. The lubricant chamber 9 is separated from the sliding current collection unit 3 by a radial partition 11. having a seal 12 at the interface with. shaft 1. The partition forming the bottom of the casing 5. consists of an external, radial baffle 1? · and a centrifugal fan 14 mounted on the sleeve 2. The fan 14 consists of a disk 15 and blades 16 mounted on its upper plane. In the lower part of the casing 5, around the circumference, filters 17 are installed, having fillers from a fine corrugated metal mesh moistened with liquid oil.

When operating an electric machine, a centrifugal fan 14 circulates cooling air through the blinds

6. Further through the slip collector assembly 3 and air is thrown out of the machine through the filters 17. When air passes through the slip collector assembly 3, coal dust is removed from the abrasion of the carbon brushes 4 and settles in the filters 17 on a metal mesh previously moistened with liquid oil. In addition, despite the radial partition 11 with the seal 12 on the shaft 1, oil vapor 10 when the machine is running, co; Yes, the oil temperature rises, penetrate from the chamber 18. It is formed by radial partitions 11 and 13, as well as by the disk 15 of the fan 11. A working 5 centrifugal fan 14 prevents the penetration of oil by the pair of the slip collector 3, eliminates its oiling and removes them from the chamber 18 through filters 17. Vapors of oil, leaving together with 10 air through filters 17, settle on the particles of coal dust, which contributes to the constant oiling of the filters, increases the efficiency of utilization of coal dust and the resource of their effective operation.

The proposed technical solution allows to increase the operational reliability of the sliding current collection unit and eliminates the possible contamination of the contact rings and the room with carbon dust.

Claims (2)

Claim 1. An electric machine comprising a shaft. bearing housed in the lubrication chamber 25 nickel, a sliding current collection unit with yiol brushes, closed by a casing and separated from the lubrication chamber by a partition with a seal, and a radial partition in the casing, dividing it into two 30 cavities, characterized in that. in order to increase reliability by reducing the oiling of the current collection unit, upo. the bent radial partition consists of two parts: a fixed external part and 35 a movable disk mounted on the shaft with centrifugal fan blades mounted on it, and the casing is equipped with gas outlet openings located in the area of the fan blades and air inlet openings located on the other the side of the current collection unit. 2. The machine according to claim 1, with the fact that in the gas outlet openings 45 new filters.