CN2053816U

CN2053816U - Brushless nonwear collector

Info

Publication number: CN2053816U
Application number: CN 89213730
Authority: CN
Inventors: 谢虎
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-07-04
Filing date: 1989-07-04
Publication date: 1990-02-28

Abstract

The utility model provides a brushless non-wear current collector which is suitable for various alternating current machines. An electric conduction liquid and an electric conduction liquid box replace the long used graphite brush. A collector ring is rotate to collect the current in the electric conduction liquid. The factors which are easy to be generated by adopting the graphite electrode are avoided. The current collecting property and the electric capacity are raised, and the service life of the current collector is prolonged.

Description

Brushless nonwear collector

The utility model belongs to the current collecting equipment on the alternating current machine.

Current collecting equipment on the existing alternating current machine adopts brush to contact the static friction with collector ring pressure and realizes current collection.Current collection is generally electrographite brush and metal graphite brush with brush.When machine operation, collector ring surface peripheral speed is about 30～70 meter per seconds, the air film of contact-making surface can float brush during rotation, cause loose contact and CURRENT DISTRIBUTION inequality and spark, galvanic corrosion, accelerated wear test and brush heating occur, report and go out spiral goove to eliminate air film in the collector ring Surface Machining, improve the CURRENT DISTRIBUTION of surface of the electric brush, but still can not fundamentally change some defectives of electrographite brush.

The purpose of this utility model is to provide a kind of and does not adopt electrographite brush, and does not have the current collecting equipment of wearing and tearing, fundamentally replaces the electrographite brush that prolongs with for a long time, thus the improvement current collection performance.

Technical essential of the present utility model is that the casing that is fixed on the stator is set outside the collector ring of rotating shaft, collector ring is included in the casing, mercury or other conductive liquid have been filled with in space between casing and the collector ring, between tank ends and rotating shaft insulator seal ring are arranged.When motor rotation, the collector ring in the rotating shaft is in fully in the interior conductive liquid of case and rotates, thereby realizes brushless nothing wearing and tearing current collection.

The motor that uses the utility model to realize can be broken away from alternating current machine and prolong the electrographite brush of using for a long time, has used a kind of brand-new current collecting equipment, and not only energy consumption is low, and has characteristics such as capacitance is big, nothing is worn and torn, safe and efficient.

Fig. 1 is the current collecting equipment cut-away view.

With reference to accompanying drawing, narrate execution mode of the present utility model.

Outside the insulating barrier (2) of machine shaft (1), collector ring (3) is housed, be covered with conductive liquid casing (4) at collector ring, collector ring is enclosed in the conductive liquid casing.This casing can be made annular, at annular casing inner ring place fluting, so that with collector shell ， And and make collector ring be easy to rotate Zhong case.This casing also can be an arc, at the inboard fluting of arc box body, the arc box body fragmented packets is trapped among outside the collector ring.Collector ring is in the casing, and conductive liquid (5) is filled up in the space in the casing, can adopt mercury usually.On casing, be provided with inlet (6), so that the injection of conductive liquid and extraction.For preventing conductive liquid, by being equipped with insulator seal closed loop (7) from seepage between machine shaft and casing.When machine operation, rotating shaft is rotated, and collector ring rotates in conductive liquid, and the electricity that collects is transported out by conductive liquid, conductive plate (8), lead.For high-speed electric expreess locomotive, too high for preventing spin manifold temperature, outside casing, also cooling device can be housed.

The utility model replaces common brush part with adding conductive liquid in the fixing casing, because whole collector ring is in the conductive liquid fully and rotates, and the flying dust that can cause wearing and tearing and cause because of friction collector ring not; The stream time and the scope of application of motor have been improved.

Claims

1, brushless nothing wearing and tearing current collecting equipment contains collector ring, it is characterized in that having conductive liquid casing, conductive liquid, closed-loop.

2, brushless nothing wearing and tearing current collecting equipment according to claim 1 is characterized in that filling conductive liquid in the conductive liquid casing, and collector ring is included in the conductive liquid.

3, brushless nothing wearing and tearing current collecting equipment according to claim 1 and 2 is characterized in that conductive liquid can be a mercury.

4, brushless nothing wearing and tearing current collecting equipment according to claim 1 and 2 is characterized in that being sealed with closed-loop between conductive liquid casing and the machine shaft, and closed-loop is what insulate.

5, brushless nothing wearing and tearing current collecting equipment according to claim 1 and 2 is characterized in that the conductive liquid casing is annular or circular arc, has conductive liquid inlet, conductive plate and lead on casing.