SU629557A1

SU629557A1 - Dc converter

Info

Publication number: SU629557A1
Application number: SU762401177A
Authority: SU
Inventors: Олег Владимирович Тарханов
Original assignee: Tarkhanov Oleg V
Priority date: 1976-09-07
Filing date: 1976-09-07
Publication date: 1978-10-25

Description

1one

Изобретение относитс к нзмерению н преобразованию больших посто нных токов н может быть использовано в металлургической , электрохимической н энергетической промышленности.The invention relates to measuring and converting large direct currents and can be used in the metallurgical, electrochemical and energy industries.

Известно устройство, состо щее из полого разъемного магнитопровода с одножильной (одновнтковой) обмоткой модул ции (1J. Магннтопровод охвачен измерительной н входной обмЪтками.A device is known which consists of a hollow detachable magnetic conductor with a single-core (single-pole) modulation winding (1J. The magnetic conductor is covered by the measuring and input capacitors.

Недостатками этого устройства вл ютс сложна конструкци нз-за необходимости выполнени иагнитопровода полым н ннзка чувствительность нз-за одновнтковой обмотки модул ции.The disadvantages of this device are the complex structure, because of the need to make the magnetic field conductor, the sensitivity is low, due to the single-modulation winding.

Наиболее близкнм по технической сущностн к предлагаемому вл етс преобразователь посто нных токов, содержащий разъемный магнитопровод, состо щий из двух частей, модулирующую и измерительные обмоткн 2.The closest in technical essence to the present invention is a direct current converter containing a detachable magnetic circuit consisting of two parts, a modulating and measuring windings 2.

Недостатками этого устройства вл ютс сравнительно сложна конструкци , наличне нулевого сигнала из-за невозможностн симметрировани электромагнитных параметров; технологическа сложность намотки четырех обмоток и зависимость габаритов устройства от обмоточной системы, что усложн ет намерение в токопроводах большого сеченн .The disadvantages of this device are relatively complex structure, the presence of a zero signal due to the impossibility of balancing the electromagnetic parameters; the technological complexity of winding the four windings and the dependence of the device dimensions on the winding system, which complicates the intention in the conductors of a large section.

Цель изобретени - упрощение конструкции и повышение точности нзмерений.The purpose of the invention is to simplify the design and improve the accuracy of measurements.

Достигаетс это тем, что в преобразователе , содержащем разъемный магннтопровод , состо щий нз двух частей, модулирующую н измернтельную обмоткн, преобразователь снабжен ферромагнитной осью, кажда часть магннтопровода выполнена нз жестко соеднненных Г-образного н П-образного элементов, размещенных взаимно перпендикул рно и с возможностью поворота на оси, на которой расположена модулирующа обмотка, а измерительна обмотка, размещена на основании одного нз Г-образных элементов.This is achieved by the fact that in a converter containing a detachable magnetic conductor consisting of two parts, modulating and measuring winding, the converter is equipped with a ferromagnetic axis, each part of the magnetic conductor is made of rigidly connected L-shaped and U-shaped elements, placed mutually perpendicular and the possibility of rotation on the axis on which the modulating winding is located, and the measuring winding, is placed on the basis of one nz L-shaped elements.

На чертеже представлена конструкци предлагаемого преобразовател .The drawing shows the design of the proposed Converter.

Claims

The converter transformer consists of two parts. Each part of the magnetic core is made of rigidly connected L shaped core 1 and U-shaped core 2. The cores t and 2 are arranged mutually perpendicular. The base of the L-shaped core I is covered by the measuring winding 3. The poles of the U-shaped cores are connected by a ferromagnetic axis 4. which is covered by the modulating winding 5. The L-shaped cores span the busbar 6 with the measured current. The converter works as follows. The variable magnetic flux from the modulating winding 5 closes along the U-shaped cores, and due to the orthogonal arrangement of the windings, this flux does not interlock with the measuring winding. Therefore, in winding 3, in the absence of a measured current in the conduit 6, EMF is not induced. When the measured current is present, a constant magnetic flux arises coupled to the winding 3. Due to the reversal of the P-shaped cores, the magnetic resistance in the path of the magnetic flux from the measured current changes twice during the period of the modulation voltage. This leads to a change in the magnetic flux from the measured current and the subsequent appearance of an emf at the output of the measuring winding 3. Simplifying the design explains the number of windings and simplifying their winding, reducing the zero signal by eliminating the need to observe the symmetry between the biocurrent sections. Claims of a DC Converter for Electrical Clamps, comprising a detachable magnetic circuit consisting of two parts, a modulating and measuring windings, characterized in that, in order to simplify the design and improve the accuracy of measurements, the converter is equipped with a ferromagnetic axis, each part of the magnetic pipeline is rigidly made connected L-shaped and U-shaped elements placed mutually perpendicularly and rotatably on the axis, and of which the modulating winding is located, and The test winding is placed on the basis of one of the L-shaped elements. Sources of information received during the examination: 1. Bogorad LM. Electric measuring tongs, M., Energia, 1961, p. eight.

2. USSR author's certificate number 249475, cl. G 01 R 1/22, 1969.