SU756530A1 - Vertical multichannel current-collecting device - Google Patents

Description

The invention relates to the field of electrical engineering, in particular the transmission of signals from rotating parts of the machine. five

The main task in this area, as well as in other areas, is the improvement of equipment, devices, increasing their quality, accuracy, reliability, etc.

A collector device for transmitting electrical signals between parts rotating one relative to the other is known, which contains contact elements in the form of a copper-graphite brush and an internal contact-ring. The signals are removed from the internal rotating ring £ 1].

The disadvantage of such a collector device 20 is the slight contact surface of the brush, which leads to rapid wear, instability of the ring-brush pair resistance resistance, and an increase in the error in measuring the signal.

It is also known a collector vertical device containing a sealed enclosure, stationary insulating rings, in the cavity of which is filled 30

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mercury, and rotating slip rings.

The measured signal is fed to a rotating contact ring and transmitted through mercury to the measuring equipment. Due to the insignificant liquid friction of the contact rings about mercury, the rings are not subject to wear, the contact resistance of a pair of contact rings-mercury remains constant and, moreover, is an order of magnitude lower than in a current collector device with sliding contact pairs, the accuracy of signal measurement is higher than that of a current collector devices with sliding contact [2].

The disadvantage of this collector device is the impossibility of increasing the number of contact rings without increasing their diameter. The latter is highly undesirable, since it leads to an increase in circumferential velocities, release of mercury from cavities located on the periphery, and a decrease in the reliability of the current-collecting device. In addition, the current collection device has a speed limit, the excess of which also leads to the release of mercury under the action of

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centrifugal force forming a parabolloid of rotation.

The purpose of the invention is to improve the vertical current collection device, increasing its reliability and accuracy.

This goal is achieved by the fact that the insulating and contact rings are made in the form of flanges, which are connected to a truncated cone, the top of which is directed upwards, while in the contact ring the cone is made outside the flange, and in the insulating ring - inside the flange.

FIG. 1 shows a current collection vertical device; in fig. 2 — node I in FIG. one.

The current collection vertical device comprises a housing 1 with fixed insulating rings 2 and a shaft 3 mounted in bearings 4 of housing 1. On the shaft 3 between the insulating sleeves 5 are mounted contact rings 6, to which wires 7 are connected, transmitting signals from a rotating part. In the cavity 8 of the rings 2, mercury 9 is flooded, from which communications 10 are moved. The stationary insulating ring 2 and the rotating contact ring 6 are made in the form of flanges 11 and 12 connected to a truncated cone, the top of which is directed upwards. In the contact ring 6, the cone 13 is made outside the flange 11, and in the insulating ring 2, the cone 14 is made inside the flange 12. The contact ring 6 with its cone 13 is immersed in mercury 9. Assembly of the device is carried out by alternately installing the insulating ring 2 in the case 1 and contact rings 6 on the shaft 3.

When the vertical collector is operating, the measured signal

served by wire 7 to the contact ring 6, passes through mercury 9 and communication 10 to the measuring equipment. At the same time, the centrifugal force arising in mercury 9 as a result of its rotation created by the ring 6, throws the mercury 9 to the periphery of the rotating ring 6 deep into the cavity 8 and, thus, prevents the release of mercury 9 from the cavity 8.

Thus, the centrifugal force, which is a negative factor leading to the release of mercury in the known vertical collector devices, in the proposed device is a positive factor that increases the reliability of the collector device) accuracy of signal measurement.

Claims (1)

Claim A current collector vertical multichannel device containing a sealed enclosure, fixed insulating rings, in the cavity of which mercury is poured and rotating contact rings, characterized in that, in order to prevent mercury emission to the adjacent contact ring and increase reliability and accuracy, the insulating and contact rings are made in the form of flanges that are connected to a truncated cone, the top of which is directed upwards, while in the contact ring the cone is made outside the flange, and in the insulating ring - inside the flange.