SU382199A1 - ROTOR OF SYNCHRONOUS ELECTRIC L \ ASHINA - Google Patents

Description

one

The rotors of a synchronous electric machine, an example of a turbogenerator, are known, which contain an excitation clutch cooled by an agent circulating in channels formed by axial and through holes and windings in windings. However, with such rotors, the winding is cooled only at the edges of the grooves forming the diagonal channels. There is no cooling agent to the solid sections of the winding winding.

In order to increase the intensity of heat transfer in the proposed rotor, the slots of the adjacent turns are located one relative to another in a checkerboard pattern.

FIG. 1 shows the described rotor, a groove along the groove and the straight part of the frontal winding of the field and the sections along A-4 and BB of even and odd turns, respectively; in fig. 2 - the same, a cross-section of the frontal part of the winding of the extreme and middle sections.

In the coils of the winding of the rotor through the entire length of the rotor with a constant inter cavity, the inner slit slots are made (by stamping or milling). The interval and between the slits is less than their longitudinal size. B. In adjacent turns, the slits are offset one relative to the other in a checkerboard pattern so that each slot of the preceding turn 2 communicates with the ends of two

2

the adjacent irresistive subsequent turn 3. A system of internal vertical channels 4 and intersecting axial channels 5 intersecting along the winding in both the slot and front parts.

The axial channels of each entry are formed by the lateral surface of the slotted holes and solid sections 6 of the adjacent turns 2 or 3. The axial channels adjacent to the common vertical channel on both sides are offset from each other in each pair of turns, which helps to equalize the temperature along the winding height .

The vertical internal channels formed by the common sections of the slotted grooves of all the turns of the groove are located along the winding between separate sections of the system of axial channels and serve to distribute the gas.

In the groove part of the winding, the vius and the release of gas from the axial channels can be carried out through adjacent bunks, as well as through one N more vertical channels. The vertical channels are limited in height, except for the points of gas inlet and outlet, insulating gaskets 7 and 8, or spans and coils ;.

In the frontal part of the winding, which entered through the input vertical drop 9, gas passes through the axial channels along the entire straight line section and, through the output vertical channel 10, enters the air gap of the machine. The vertical channels located between the input and output channels of the MMI are limited by 1 height to under-band insulation // and an insulating screen or to the upper and lower solid windings.

The cooling of the arc section is similar to the cooling of the linear sections of the frontal part. The gas, which passes through the inlet vertical channel of a 9 l axial ventilation channel, exits the vertical channel 12 to the low pressure zone 13. From this zone, gas enters the ventilation slots.

| 5 milled in the big tooth of the rotor, and through them into the gap of the machine.

Subject invention

A rotor of a synchronous elaptic machine, e.g. in chess order.