SU1018183A1 - Elastic contact current pick-off unit - Google Patents

Abstract

. ELASTIC CONTACT ELECTRIC KIT, containing tube-shaped capillary fibers, filled with an electrically conductive liquid and located inside the glass, the gaps between the fibers are filled with an elastic metal-polymeric material, characterized in that, in order to improve the quality of the current-collecting, the durability and reliability of the device, it is equipped with a flexible metal-polymer material, which is equipped with a stocking material, durability and reliability of the current-collecting power, durability and reliability of the device, and a stocking material, which is equipped with a flexible metal-polymer material , a reservoir with a conductive liquid, a compressed gas line and a bellows, from the end of which the contact element is fixed, communicating through the bellows with the reservoir Om, the elastic element is placed at the bottom of the glass under the bellows, and the cavity of the glass under the bellows and reservoir is connected to the compressed gas line. S

Description

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The invention relates to current collection devices, and more specifically to elastic contact current collection nodes of electric machines and current collectors of high-speed transport means using current collection from a hard contact conductor using a sliding mechanical contact.

Elastic contact current-collecting assemblies are known, which contain a bundle of fibers from a refractory, non-conductive material, covered with a three-layer metal film, fixed in the form of a brush in a common metal holder 1.

The closest to the proposed Moivty are elastic contact current-collecting nodes containing fibers in the form of tubes-capillaries filled with an electrically conductive liquid and located inside the glass; the gaps between the fibers are filled with elastic metal-polymer material 2.

However, the production of fibers having three layers of coating, one layer of solid refractory metal, such as nickel, chromium, tungsten, the second of high-conducting metal, such as copper, silver, aluminum, the third layer of antifriction material, such as tin, lead, tellurides, is a very labour intensive. Making fiber capillaries and filling capillaries with an electrically conductive liquid is an even more laborious and technologically complex process. In addition, the leakage of liquid from the capillaries and the deterioration of the quality of contact are possible, since there are no liquid replenishment devices. The ferrofluid metal is only used to adjust the elasticity of the current collection element.

The purpose of the invention is the achievement of high reliability, durability of the item, the spacer element and the improvement of the quality of the current collection.

This goal is achieved by

that the elastic contact collector unit containing capillary tubular fibers, filled with electrically conductive liquid and located inside the glass, the gaps between the fibers are filled with an elastic metal-polymer material, is provided with an elastic element, a reservoir with a conducting liquid, a compressed gas line and a bellows from the end of which is fixed the contact element communicating through the bellows with the reservoir, the elastic element is placed at the bottom of the glass under the bellows, and the cavity of the glass under the bellows and the reservoir with United with the compressed gas line.

The drawing shows the elastic current collection node, the cut.

The elastic current collection assembly comprises a contact element 1 of metal polymer, which is a thermoplastic porous matrix having good antifriction properties, with an associated system of capillary pores filled with an electrically conductive fluid fixed in the bellows 2 filled with an electrically conductive liquid 3, connected through tubes 4 with reservoir 5. The bellows 2 is placed in a glass b with a gas inlet, at the bottom of which an elastic element 7 is installed. A limiting stop 8 is installed on the tube 4 and conductive shunt 9.

Elastic contact, current collection node works as follows.

The contact element 1 with its flat surface is in contact with the collector or the contact conductor and through the communicating pore system with the electrically conductive fluid makes a current lead to the bellows 2 filled with the electrically conductive fluid 3 and then through the tube 4 and the conductive shunt 9 to the external circuit. The elasticity of the current collection assembly is provided by the deformation of the bellows 2, and the excess fluid flows through the tubes 4 to the pesenwvar 5 and back, in which the necessary excess pressure of the compressed gas is constantly maintained, and the outer element 7 (spring, rubber and npj. Compressed gas, for example nitrogen, The drone and d supplied under the appropriate pressure through the hole in the glass b, passes between the walls of the bellows 2 and the glass b and provides cooling of the electrically conducting liquid, isolating the contact point from oxidation by oxygen from the atmosphere, damping The oscillations of the contact element. The gap between the glass b and the concact element 1, the rigidity of the spring 7, the air pressure in the tank 5 and in the glass b are chosen because of the required dynamic characteristics of the current collector element.

A variant of the elastic contact collector assembly is possible, in which the bellows is made with spiral corrugations, which ensure the directional movement of the gas flow and the centering of the bellows 2 in glass 6 in order to avoid mashing

The efficiency of using 6 m of the proposed device is as follows. Replacing the capillary fibers with a Metal-Polymer with associated capillary pores filled with an electrically conductive liquid, technology 31018183

more than 2 times the formation of corrosives. Wherein

This constitutes phase separation, or the elastic properties of the con-

cooling of the colloidal .tactic element, it is possible to increase

thermoplastic solutions in combining-load capacity, get

with these fluids, allows the low-elasticity of the current-collecting

This is the case of a contact element, an element and, in this way, the contact pressure and resistance of current contact and the wear resistance of the contact element of the current collection element are achieved.

Claims (1)

(5 7). ELASTIC CONTACT SURFACE ASSEMBLY, containing fibers in the form of capillary tubes filled with an electrically conductive liquid and located inside the glass, the gaps between the fibers are filled with an elastic metal-polymer material, which differs in that, in order to improve the quality of current collection, durability and reliability of the device, it equipped with an elastic element, a reservoir with conductive fluid, a compressed gas line and a bellows, from the end of which a contact element is fixed, communicating through the bellows with the reservoir, rd element is disposed on the bottom of the glass under the bellows and a bellows cup cavity and the reservoir is connected to the backbone of the compressed gas. S