SU789754A1

SU789754A1 - Frequency converter of d.c. electric voltage

Info

Publication number: SU789754A1
Application number: SU782685069A
Authority: SU
Inventors: Александр Евгеньевич Скачков; Юрий Сергеевич Бадаев; Иван Степанович Лавров; Юрий Степанович Веселов
Original assignee: Ленинградский технологический институт им. Ленсовета; Предприятие П/Я А-1097
Priority date: 1978-11-15
Filing date: 1978-11-15
Publication date: 1980-12-23

Description

1one

Изобретение относитс к электроизмерительной технике и предназначено дл использовани при необходимости преобразовани высокого посто нного напр жени в импульсныйсиг- 5 нал.The invention relates to electrical measuring equipment and is intended for use when converting high constant voltage to pulsed wave when necessary.

Известен частотный преобразователь посто нного напр жени , выполненный в виде совокупности биморфной пьезо- . электрической диафрагмы и дифференци- 0 ального струнного преобразовател силы в частоту 1.A constant voltage frequency converter is known, made as a combination of a bimorph piezo. an electrical diaphragm and a differential 0-force string converter to frequency 1.

Недостаток известного устройства св зан с ограниченной областью его практического использовани . 15A disadvantage of the known device is associated with a limited area of its practical use. 15

Наиболее близким техническим решением к данному вл етс частотный преобразователь посто нного электрического напр жени , содержащий электрода , помещенные в диэлектрическую 20 жидкость, электропровод щее тело во взвешенном состо нии между электродами И The closest technical solution to this is a constant voltage voltage converter containing electrodes, placed in a dielectric liquid 20, an electrically conducting body in a suspended state between electrodes And

Недостатками известного, устройства вл ютс низка точность преобра- 25 зовани и невысока эксплуатационна надежность.The disadvantages of the known devices are low conversion accuracy and low operational reliability.

Указанные недостатки обусловлены тем, что формирование выходных импульсов преобразовател происходит в ре- 30These drawbacks are due to the fact that the formation of the output pulses of the converter occurs in 30

зультате контактной разр дки электропровод щего тел (сферической частицы) с измерительным электродом. При этом в любом варианте данной конструкции имеет место возникновение микроискрений .as a result of contact discharge of an electrically conductive body (spherical particle) with a measuring electrode. At the same time, in any version of this construction, the occurrence of microdiscussions occurs.

Микроискрение - это источник сигнала помехи, который не может быть полностью исключен ни созданием вакуума , ни введением в межэлектродную область среды с повьдленной электрической прочностью, под давлением и т.д. Кроме то.го, случайное возникновение электрического разр да в .межэлектродном промежутке может привести к выходу из стро регистрирующей аппаратуры.Micro-spark is the source of the interference signal, which cannot be completely eliminated either by creating a vacuum or by introducing a medium into the interelectrode area of the medium with povdlennoy electrical strength, under pressure, etc. In addition to this, the accidental occurrence of an electrical discharge in the electrode gap may result in the failure of the recording equipment.

Цель изобре1ени вл етс повышение точности и надежности измерительного устройства.The purpose of the invention is to improve the accuracy and reliability of the measuring device.

Claims

The goal is achieved by the fact that an inductance coil is inserted into a frequency converter of a constant electric voltage containing electrodes elevated into a dielectric and an electrically conducting body between the electrodes, and the electrically conducting body is made of magnetically hard magnetized material Moreover, the inductor is located between the electrodes. The drawing shows the construction of the proposed DC / DC frequency converter. The converter contains electrodes 1 and 2, electrically conducting a warm spherical particle 3 ,. conductor 4, coil 5, magnetic conductor b, building 7, cover 8, liquid non-polar dielectric 9, plug connector 10 spring 11, security cylinder 12, sleeve 13, pins 14. Housing 7 - closed by a cover 8 with a plug with plug connector 10, V housing 7 an electrode 1 with a conductor 4 is inserted in parallel; Electrode 1 is parallel to the security cylinder 12 using a sleeve 13 and pins 14;

2. Between electrodes 1 and 2 a spherical particle 3, made of magnetically hard magnetized material, is placed, and the gap between the electrodes is filled with a non-polar liquid dielectric 9, whose density is equal to the density of particle 3, an inductor 5 with a magnetic core 6 is installed on the security cylinder 12. sleeve 13 and a cover 8 a conic spring 11 is placed. A plug connector 10 electrically connected to the coil 5 and the electrode 2 is fastened on the cover 8 of the device. The device operates as follows. When voltage is applied to electrodes 1 and 2, an electric field arises in the interelectrode space. Under the action of this field the spherical particle 3 suspended in the liquid dielectric 9 makes an oscillatory motion. During the oscillations, the constant magnetic field of the particle 3 induces in the coil. 5, the EMF variable is e, the frequency of which corresponds to the frequency of oscillation of the particle 3, and the value is determined by the dependence. rfljB N - the number of layers of the coil 5; B — induction of a constant magnetic field; D is the diameter of a spherical particle 3; , d is the diameter of the wire of Coil 5 with insulation; - oscillation frequency of a spherical particle 3; . h is the height of the winding of the coil 5. Since the oscillation frequency f of the spherical particle 3 linearly depends on the magnitude of the voltage applied to the electrodes 1 and 2, the frequency of the emf e is also with the applied voltage in the dependence. The EMF frequency is measured using a frequency meter calibrated in units of voltage. The above expression shows that the value of EMF e is determined by the oscillation frequency f of the spherical particle 3, therefore the information from this converter is collected not only in discrete, but also in analog form. Claims of the Inverter DC voltage converter containing electrodes placed in a dielectric fluid and an electrically conductive body suspended between the electrodes, characterized in that, in order to improve accuracy and reliability, an inductive coil is introduced into it, and an electrically conductive the body is made of magnetically hard magnetized material, with the inductor located between the electrodes. Sources of information taken into account in the examination 1, USSR Author's Certificate I 461382, cl., G 01 R 19/26, 1972, 2, USSR Author's Certificate No. 256354, cl, F 15 W 5/00, 1968,