SU788240A1 - Contact-free rotary current collector - Google Patents

Description

(54) NON-CONTACT ROTATING CURRENT

I

The invention relates to the field of telemetry and can be used in any industry where simultaneous contactless transmission of power and measuring voltages through a rotating connection is required, for example, in contactless rotating telemetric instruments.

A device for contactless transmission of a measuring voltage through a rotating connection consisting of a stator and a rotor and primary and secondary windings 1 arranged on them is known.

A disadvantage of this device is the inability to transfer the supply voltage simultaneously with the measuring voltage between two mutually rotating objects, which limits the possibility of their use in telemetric instruments.

The closest in technical essence and the achieved result to the proposed device for simultaneous transfer of supply voltage and measuring voltage in contactless rotating telemetry devices, consisting of a stator and a ring-shaped rotor, as well as placed on the stator and in the ring grooves of the rotor of the primary and secondary windings for supply voltage and measuring voltage. The primary winding for the supply voltage is installed at the middle pole of the stator, and the secondary section is placed on two symmetrical sections and, when the sections are turned on, is installed in the annular grooves of the rotor. Primary and secondary windings for measuring voltage are fitted in additional slots.

10 middle poles of the stator and rotor. Simultaneous transfer of supply voltage and measuring voltage between two mutually rotating objects is achieved in the device by eliminating the mutual influence of magnetic fluxes generated by these voltages by introducing additional grooves located in the middle poles of the rotor and stator with primary and secondary windings for a 2JJ voltage meter 2.

Claims (2)

However, a significant disadvantage of this device is an increase in losses in the magnetic circuit due to an increase in the magnetic flux resistance due to the incomplete coverage of the ring-shaped rotor core with the stator core, which reduces the efficiency of the transmission of the supply voltage. The purpose of the invention is to increase the efficiency in the transmission of power supply voltage in contactless rotating telemetric instruments by reducing the resistance to magnetic flux. The goal is achieved by the fact that the stator core is made in the form of a ring covering the rotor, each measuring winding is made of two sections, the measuring windings and the supply voltage are installed in the same ring grooves, and the sections of the windings on the stator and the rotor for supply voltage included according to, and for measuring voltage - opposite. FIG. 1 shows a device with primary windings placed on the stator and on the rotor for supply voltage, general view; in fig. 2 - the same for measuring voltage, general view; in fig. 3 is a circuit for connecting sections of primary and secondary windings for supply voltage; in fig. 4 is the same for measuring voltage. (The arrows indicate the direction of the magnetic flux in the magnetic circuit of the device created by symmetrically partitioned windings). The device comprises an annular stator 1, made according to the type of an W-shaped core, in the annular grooves 2 and 3 of which the primary winding for the supply voltage, made in the form of symmetrical sections 4 and 5, and the secondary winding for the measuring voltage, made in the form of symmetrical sections 6 and 7, an annular rotor 8, made according to an W-shaped core, in slots 9 and 10 of which a secondary winding for supply voltage is placed, made in the form of symmetrical sections 11 and 12, and the primary winding for measuring voltage in the form of symmetrical sections 13 and 14. Sections of the stator and rotor windings are included according to pi.tani voltage and counter for measuring voltage. The simultaneous transfer of the supply voltage and the measuring voltage in the proposed device is based on the elimination and mutual influence due to the induction of oncoming emf in the symmetric sections of the windings. The operation of the device consists in the fact that the magnetic flux created by the primary winding for the supply voltage closes in the magnetic circuit through the extreme poles of the stator and rotor cores, covering the secondary winding, made in the form of symmetric sections with an EMF consistent with the induction of an emf in them. The magnetic flux created by the primary winding for the measuring voltage, made in the form of symmetric sections with their opposite connection, consists of two opposite symmetric magnetic fluxes, each of which is closed through the extreme and middle poles of the stator and rotor cores, covered symmetrically sectioned and switched on sections of the secondary winding, induction in them EMF of one sign. The elimination of mutual influence in case of simultaneous transmission of supply and measuring voltages is achieved by the fact that the magnetic flux created by the primary winding for the supply voltage covers the primary and secondary windings for the measuring voltage induced in the symmetric opposite sections of the opposite electromotive voltage and Magnetic fluxes generated by symmetric winding sections for measuring voltage induce oncoming EMF in symmetric, according to the included sections of the primary and secondary windings d l supply voltage. This ensures independence while simultaneously transmitting the supply and measuring voltages. Efficiency is increased when transferring the supply voltage is achieved in a given device by reducing the magnetic flux resistance by creating the shortest distance for its passage in the magnetic circuit throughout the ring rotor. A non-contact rotating current collector comprising a stator and an annular rotor made with annular grooves in which primary and secondary windings for supply voltage and measuring voltage are installed, the secondary winding for supply voltage being divided into two sections, characterized in that in order to increase the efficiency, the stator core is made in the form of a ring covering the rotor, each measuring winding is made of two sections, the measuring windings and the voltage and the power supplies are installed in the same annular grooves, with the winding sections on the stator and the rotor for the voltage supply being included according, and for the measuring voltage - opposite. Sources of information taken into account during the examination 1. USSR author's certificate No. 464933, cl. H 01 R 39/00, 1972. 2. The patent of Germany No. 2122341, cl. H 01 f 19/00, 1972. eight 12 L X fig l Sh X / f .eleven J 12