SU900470A1

SU900470A1 - Static charge neutralizer

Info

Publication number: SU900470A1
Application number: SU802930240A
Authority: SU
Inventors: Петр Лейбович Гефтер; Александр Николаевич Молчанов; Владимир Наумович Стысис
Original assignee: Всесоюзный научно-исследовательский и экспериментальный институт по переработке химических волокон
Priority date: 1980-05-23
Filing date: 1980-05-23
Publication date: 1982-01-23

Description

II

Изобретение относитс к технике нефтрализации зар дов статического электричества, в частности на поверхности диэлектрических материалов и может быть использовано, например, в текстильной промышленности на сновальных машинах.The invention relates to a technique for the nefralization of charges of static electricity, in particular on the surface of dielectric materials, and can be used, for example, in the textile industry on warping machines.

Известен нейтрализатор зар дов статического электричества с диэлектрическим материалом содержащий высоковольтный источник и разр дник l .A neutralizer of static electricity charges with a dielectric material is known containing a high voltage source and a detector l.

Недостатком его вл етс невысока эффективность, котора зависит от амплитудного значени переменного напр жени , подаваемого на разр дник . При недостаточной амплитуде напр жени на диэлектрическом материале остаетс часть исходного зар да. При избыточной амплитуде напр жени диэлектрический материал после прохождени разр дника оказываетс зар женньм , но знак зар да противоположен исходному.Its disadvantage is low efficiency, which depends on the amplitude value of the alternating voltage applied to the discharge. With an insufficient amplitude of voltage on the dielectric material, a part of the initial charge remains. With an excessive amplitude of voltage, the dielectric material after passing through the arrester is charged, but the sign of the charge is opposite to the original one.

Наиболее близким к предложенному вл етс нейтрализатор зар дов, содержащий источник высокого напр жени с трансформатором, разр дник, датчик зар да и систему автоматического управлени 2.Closest to the proposed is a charge neutralizer containing a high voltage source with a transformer, a gaiter, a charge sensor, and an automatic control system 2.

Однако этот нейтрализатор имеет достаточно сложную схему, поэтому затруднено его широкое применение, в частности, в текстильной промыш10 ленности.However, this neutralizer has a rather complicated scheme; therefore, its wide application is difficult, in particular, in the textile industry.

Целью изобретени вл етс упрощение схемы нейтрализации.The aim of the invention is to simplify the neutralization scheme.

Эта цель достигаетс тем, что This goal is achieved by the fact that

15 нейтрализатор зар дов статического электричества, содержащий источник высокого напр жени с трансформатором , разр дник, датчик зар да и систему автоматического управлени , 15 static charge neutralizer containing a high voltage source with a transformer, an arrester, a charge sensor and an automatic control system,

Claims

20 is provided with an electric field modulator in the region of the sensor and an AC amplifier, the input of which is connected to the output of the sensor and the output to the primary winding of the specified transformer. The drawing shows a diagram of the device. The circuit consists of a charge sensor 1 with a fixed measuring plate 2, isolated from the sensor case, a rotating plate 3 connected to the case and representing a modulator, alternating current amplifier 4, high-voltage transformer 5 and discharge 6. Sensor 1 is located near dielectric material 7 behind the discharge as the material moves. The neutralizer works as follows. Alternating voltage 6 from the secondary winding of transformer 5 receives alternating high-voltage, causing the discharge points to become corona. . Ions, whose sign is opposite to the charge of the material, are pulled out of the corona region by the action of ponderomotive forces and neutralize the charges on the material. The residual charge of the material determines the strength of the electrostatic field near sensor 1. When the generator electrode 3 rotates, plate 2 is periodically shielded from the material floor, and a variable voltage is generated at the input of amplifier 4, the amplitude of which is proportional to the residual density of the material; the frequency is determined by the angular rotation speed of plate 3 and the number of blades of plates 2 and 3. Through the amplifier 4 and the transformer 5, high voltage is applied to the discharge circuit 6. In the neutralizer, a closed automatic control system is applied — with insufficient neutralizer efficiency (small amplitude of the voltage on the tips of the discharge lamp) there is a significant residual charge on the material after the voltage and, as a result, the voltage amplitude at the transformer output increases and the efficiency increases. The proposed low frequency neutralizer automatically sets the amplitude of the high voltage on the tips of the gaiter at which the minimum density of the residual charge on the material is reached. The control circuit of the proposed neutralizer is much simpler than the circuit of the known neutralizer due to the elimination of logic elements from it. This makes it possible to apply the proposed neutralizer on a fairly large scale, including in the textile industry. Invention A static electricity charge neutralizer containing a high voltage power source with a transformer, an arrester, a charge sensor and an automatic control system, characterized in that it is equipped with an electric field modulator in order to simplify the control circuit. the sensor and an AC amplifier whose input is connected to the sensor output, and the output to the primary winding of the specified transformer. Sources of information taken into account in the examination 1.Faber GA et al. Neutralizing the charges of static electricity in light-duty plants. Express information .. Textile industry of the USSR. M., TsNIITEEIlegprom, 1976, p. 13.

2. Pat nt Great Britain No. 1277429, cl. G 3 R, pub. 1972 (prototype).

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