SU1432673A1 - Sealed d.c. dynamoelectric machine - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to reduce the weight and size and increase reliability. The unit consists of a magnetically conducting case 1, in which poles 2 with coils 3 are installed. Core core 4 with winding 5 is installed at one end of additional magnetic circuit 6. At the other end of magnetic circuit 6, the teeth of the inner coupling half 7 are made. Outer coupling half 8 with coupling half 7 form a synchronous coupling. A shield 14 is installed in the coupling gap. Through the use of an additional magnetic circuit 6, the magnetic flux is used twice: in the machine and in the coupling. 1 il. yu (L

Description

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The invention relates to special electric machines. It provides contactless transfer of energy into a sealed volume (or from a sealed volume) through a continuous partition.

The purpose of the invention is to reduce the weight and size and increase the reliability of the unit "

The drawing shows an npejuiara-like electrical unit,

The DC hermetic generator set consists of a casing-magnet line 1, in which poles 2 and excitation coils 3 are installed. The core core 4 with winding 5 is installed at one end of the magnetic conductor b, at the other end of the magnetic conductor 6, the teeth of the inner coupling half 7 are made. The external coupling half 8 is installed in bearings 9 and has a shaft 10. The magnetic conductor 6 is installed on the shaft 115 on which the collector 12 is installed contact with the brushes 13, the collector plates 12 are electrically connected to the winding 5 core; in the gap between the inside and the bottom of the coupling, the hermetic seal is installed

Couplings, for example, by a turbine, the ingress of the working medium of which into the volume where the inner coupling half and the electric machine (serviced zone) are placed, is unacceptable, begin to rotate. HEHYT-- half the coupling half and measles. The winding core intersects the magnetic flux created by the excitation winding, and

EMF is induced in the winding and removed through the collector-brush node. The unit converts mechanical energy, the source of which is located in the sealed area, into electrical energy. Since the magnetic flux created by the excitation winding in the gap between the machine and the poles is unipolar, it is necessary to make the pitch of the core and the width of the pole wider.

half pole division. In this case, the EMF in the winding of the core is induced in the side of the section under the pole and is not induced in the opposite side. At default

This condition in opposite sides of the section would induce an emf of the opposite sign and mutually destroy

Technical and economic effect of

the screen 14, the sealing of the cavity, at the time of its engagement, consists in reducing the masonry; the outer coupling half is mounted by spacers 15 ,.

The electrical unit operates as follows

Relshm engine. When applying a voltage to the coil 3, it is excited that the working magnetic flux (shown by arrows) is common, which is common to both the machine and the coupling o This magnetic note provides coupling between the coupling halves 7 and 8. The same flow interacts with the current in the winding core, which flows through it when the winding is connected to an external source of constant voltage. Wherein

The interaction of the magnetic flux and the current arises with a rotating moment attached to the machine core. The anchor, and with it the inner half coupling rotates. Since the coupling half is coupled by a magnetic flux, the outer coupling half is also rotated, which is located in a sealed cavity.

Generator mode. The excitation winding is powered from an independent source. When this source is connected, coupling of couplings 7 and 8 occurs. If the shaft of the outer half is now brought into rotation

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This is due to the fact that the magnetic flux created by one magnetizing system is used twice: both in the machine and in the clutch. The mass of the excitation coil is proportional to the MDS generated by it, which is used to magnetize the magnetic circuit of the aggregate. For the proposed unit, due to the combination of the magnetic circuit of the machine and the coupling, the length of the magnetic circuit along the magnetic conductor is reduced, and since the MDS in the magnetic conductor is 20-40%, the mass of a single coil is 20-40% less than the mass of two separate coils.

In addition, the reliability of the unit is increased, since one coil is used as the field winding instead of the field coil of the coupling and several machine coils. The reduction in the number of coils itself increases the reliability of the system, while the excitation coils of the machine, located at the poles, have interrail joints, which are located in the area of the rotating core. . For them, the likelihood of damage when engaging with the bark is great.

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Claims (1)

Invention Formula A sealed DC generator containing a magnetically conductive housing, inside of which there are poles with an excitation winding, measles with a core and a winding, a brush-collector assembly and a sealed synchronous coupling consisting of an inner and outer coupling halves and a screen located in the gap between coupling halves, characterized in that, in order to reduce the weight and dimensions and improve the Compiled by S. Shutova Editor N. Lazorenko Tehred M. Didyk Proofreader M. Pojo Order 5456/49 Circulation 666 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 3 reliability, provided with an additional magnetic core mounted on the shaft, made in the form of a soft steel magnet sleeve, at one end of which a core of the core with a winding is mounted, and the other half of the coupling half is made on the other side, the excitation winding is made in the form of a cylindrical coil and installed - body coaxially with the shaft between the poles and the flange of the screen, the step of winding the core and the width of the pole are made equal to half the pole division, Subscription