RU41203U1 - ROTOR OF A SYNCHRONOUS EXPLOSIVES MACHINE - Google Patents

Abstract

The utility model relates to electrical engineering and can be used in synchronous non-polarized machines having a rotor with retaining rings designed to secure the frontal parts of the field winding. The rotor of a synchronous non-polar machine, contains a shaft, a magnetic circuit with an excitation winding, the frontal parts of which are fixed with retaining rings, centering rings, and the retaining rings are made of composite material. The use of retaining rings made of composite materials allows, while reducing the cost of manufacturing a rotor, to obtain higher performance indicators of both the rotor and the electric machine as a whole.

Description

The inventive utility model relates to electrical engineering and can be used in synchronous non-polar machines having a rotor with retaining rings designed to secure the frontal parts of the field winding.

A rotor of a synchronous non-equipolar machine with an excitation winding is fixed in the frontal parts using retaining rings made of non-corrosion-resistant steel (Turbogenerator TVS-32UZ, general drawing No. 1VZ.253.041).

The disadvantages of using rotor retaining rings made of non-corrosion-resistant steel are:

- the possibility of their damage during operation due to corrosion or corrosion-fatigue cracking when combined with mechanical stress and high humidity;

- the possibility of sintering the seating surfaces of the rotor and retaining ring

Also known is a turbogenerator rotor having retaining rings made of stainless steel (Japanese Patent 5-48059, H 02 K 3/51,).

Banding rings made of corrosion-resistant steel significantly reduce the possibility of corrosion defects, but do not exclude the possibility of fumes, contact corrosion at the landing sites.

The rotor proposed in the claimed utility model has retaining rings made of composite materials, for example, fiberglass, organoplastics. The use of such rings allows you to:

- increase the reliability of the rotor during operation;

- reduce the cost of ongoing maintenance of the rotor during operation;

- reduce the manufacturing time of the rotor;

- reduce the cost of manufacturing the rotor.

The essence of the utility model lies in the fact that in the rotor of an implicit pole synchronous machine containing a shaft, a magnetic circuit with an excitation winding, and a centering ring, to fix the frontal parts of the excitation winding, brace rings are made of composite material, for example, fiberglass, organoplastics.

The figure shows a longitudinal section of the rotor of an implicit pole synchronous machine.

The rotor comprises a shaft 1, a magnetic circuit 2 with an excitation winding 3, centering rings 4. The frontal parts of the excitation winding 3 are mounted in the radial direction by retaining rings 5 of composite material.

The advantage of the proposed rotor design is:

- improving the reliability of the rotor during operation due to:

 - eliminating the possibility of damage to the retaining rings due to corrosion or corrosion-fatigue cracking;

-exclusion of the possibility of burning caused by the electrical conductivity of the retaining rings, contact corrosion at the landing sites

- reducing the cost of routine maintenance of the rotor during operation due to the more rare need for dismantling of retaining rings, because their inspection can be carried out without dismantling.

- reducing the production time of the rotor due to the short production time of retaining rings from composite materials;

- reducing the cost of manufacturing the rotor, due to:

- lower cost of retaining rings made of composite materials compared to steel;

-the absence of the need to isolate the rotor winding from retaining rings, due to their dielectric properties. Thus, the use of retaining rings made of composite materials allows, while reducing the cost of manufacturing the rotor, to obtain higher performance indicators of both the rotor and the electric machine as a whole.

Claims (1)

The rotor of a synchronous non-equipolar machine, comprising a shaft, a magnetic circuit with an excitation winding, the frontal parts of which are fixed with retaining rings, centering rings, characterized in that the retaining rings are made of composite material.