RU198465U1 - A device for drying the damp or impregnated insulation of armature windings of traction electric machines with infrared radiation of a chamber type - Google Patents

Abstract

The utility model relates to electrical engineering, in particular to the production and repair of electrical machines, for example, windings of traction electric machines (TEM) of locomotives and motor-car rolling stock. the fact that infrared emitters are located on heating panels fixed around the perimeter of a closed-type chamber of an arched shape with internal thermal insulation. The diagram of a device for drying the moistened or impregnated insulation of armature windings of traction electric machines with infrared chamber-type radiation is shown in Fig. 1. Anchor TEM 12 with its shaft 11 by a crane beam is placed on one side on the drive rollers 10, and on the other side on the support rollers 13. The rollers are placed on the corresponding supports 8 and 9. After the horizontal placement of the anchor, the drying chamber 14, installed with its own wheels 15 on the rails 7, moves to the extreme position, located above the armature 12. The drying chamber 14 is a closed-type structure of an arched shape with internal thermal insulation 20 to reduce heat loss. Along the perimeter of the chamber there are horizontal heating panels 16 intended for heating the active part of the armature winding 18, and on the rear inner wall of the chamber there is a vertical heating panel 17 intended for heating the frontal part of the armature winding 19. Ceramic infrared emitters 21 are mounted on the heating panels. heating the insulation of the armature winding in the device is provided for its rotation by means of an electric drive, consisting of an asynchronous three-phase electric motor 4, connected to the drive rollers 10 through small 5 and large 6 V-belt transmission pulleys. To control the drying process and the operation of the device as a whole, an interface unit 1 is provided with an information and control panel, a thermal field control unit 2 and a rotation intensity task unit 3. As a result of the use of a device for drying the moistened or impregnated insulation of armature windings of traction electric machines with chamber-type infrared radiation , the cost of electricity for repairs is reduced, the drying rate increases by reducing heat loss. 1 ill.

Description

The utility model relates to electrical engineering, in particular to the production and repair of electrical machines, for example, windings of traction electrical machines (TEM) of locomotives and motor-car rolling stock.

A device is known for implementing a spectral-oscillating method of impregnating the insulation of the windings of rotating electrical machines [1], consisting of medium-wave and short-wave pulsed ceramic infrared transducers, automatic nebulizers, powered by a high-pressure pump, which removes moisture by infrared heating from the insulation the frontal part, before impregnation, with the maximum permissible temperature for a given class of insulation, transportation of the impregnating mixture deep into the insulation of the winding and applying the impregnating mixture to the frontal part.

The disadvantage of this device is that only the frontal part of the TEM armature winding is subject to drying.

The closest technical solution, chosen as a prototype, is a device for implementing a selective method of drying the moistened or impregnated insulation of armature windings of traction electric machines with infrared radiation [2], consisting of a frame with an attached frequency-controlled asynchronous electric drive, and a rack on which the IR - emitters. A frequency-controlled asynchronous drive, consisting of a magnetic starter, a frequency converter, an asynchronous three-phase electric motor, a belt drive, a gearbox and drive-supporting rubber rollers, is designed to give a smooth rotational motion to the TEM armature in a wide range. On the rack there are three curved IR emitters intended for drying the insulation of the frontal part of the armature winding and six flat IR emitters intended for drying the insulation of the active part of the TEM armature winding by IR radiation.

The disadvantage of this device is that it uses an open-type chamber, which leads to additional heat loss during drying and, accordingly, an increase in its duration.

A device for drying humidified or impregnated insulation of armature windings TEM with infrared radiation of a chamber type, characterized in that infrared emitters are located on heating panels fixed along the perimeter of a closed-type chamber of an arched shape with internal thermal insulation.

A diagram of a device for drying the moistened or impregnated insulation of armature windings of traction electric machines with infrared radiation of a chamber type is shown in Fig. 1.

In FIG. 1: 1 - interface block (information and control panel); 2 - thermal field control unit; 3 - block of the task of the intensity of rotation (frequency converter); 4 - asynchronous three-phase electric motor; 5 - small pulley of V-belt transmission; 6 - large V-belt pulley; 7 - rails for moving the drying chamber; 8 - support for drive rollers; 9 - support rollers support; 10 - drive rollers; 11 - armature shaft TEM; 12 - TEM anchor; 13 - support rollers; 14 - drying chamber; 15 - wheels of the drying chamber; 16 - horizontal heating panel; 17 - vertical heating panel; 18 - active part of the TEM armature winding; 19 - frontal part of the TEM armature winding; 20 - thermal insulation; 21 - ceramic infrared emitters.

Anchor TEM 12 with its shaft 11 by a crane-beam is placed on one side on the drive rollers 10, and on the other side on the support rollers 13. The rollers are placed on the corresponding supports 8 and 9. After the horizontal placement of the anchor, the drying chamber 14, installed with its wheels 75 on rails 7, moves to the extreme position, located above the anchor 12. The drying chamber 14 is a closed-type structure of an arched shape with internal thermal insulation 20 to reduce heat loss. Along the perimeter of the chamber there are horizontal heating panels 16 intended for heating the active part of the armature winding 18, and on the rear inner wall of the chamber there is a vertical heating panel 17 intended for heating the frontal part of the armature winding 19. Ceramic infrared emitters 21 are mounted on the heating panels. heating the insulation of the armature winding in the device provides for its rotation by means of an electric drive, consisting of an asynchronous three-phase electric motor 4, connected to the drive rollers 10 through small 5 and large 6 V-belt pulleys. To control the drying process and the operation of the device as a whole, an interface unit 1 with an information and control panel, a thermal field control unit 2 and a rotation intensity task unit 3 is provided.

As a result of the use of a device for drying the moistened or impregnated insulation of the armature windings of traction electric machines with infrared radiation of the chamber type, electricity costs for repairs are reduced, the drying speed is increased by reducing heat losses.

A source of information

1. Pat. 2515267 of the Russian Federation. IPC N02K 15/12. Spectral-oscillating method of impregnation of the insulation of the windings of the windings of rotating electrical machines and a device for its implementation [Text] / Е.М. Lytkina, E.Yu. Dulsky, A.M. Khudonogov; applicant and patentee FGBOU VPO "Irkutsk State University of Railways". No. 2012157499/07; declared 12/26/2012; publ. 05/10/2014.

2. Pat. 2525296 of the Russian Federation. IPC N02K 15/12. Selective method of drying damp or impregnated insulation of armature windings of traction electric machines with infrared radiation and a device for its implementation [Text] / A.M. Khudonogov, E.M. Lytkina, E.Yu. Dulsky, P. Yu. Ivanov, N.N. Garev, V.N. Vyzhimova; applicant and patentee FGBOU VPO Irkutsk State University of Railways. No. 2012143541/07; declared 10/11/2012; publ. 04/20/2014.

Claims (1)

A device for drying the damp or impregnated insulation of armature windings of traction electric machines with infrared radiation of a chamber type, characterized in that the infrared emitters are located on heating panels fixed along the perimeter of the chamber, of a closed arc-shaped type with internal thermal insulation.

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