SU1478159A1 - Electrostatic field indicator - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to simplify the design. The indicator contains a horizontal beam 1, made of electret in the form of two cones interconnected by bases, and fixed on axis 2, which is equipped with a torque compensation unit 3, a dielectric body 4, on which measuring scale 5 is applied. The electrostatic field indicator further comprises an axis 6 with an element of suspension in the form of an ellipse and a node 8 for compensation of the torque. In the element 7, the axis 2 of the beam 1 is fixed, which ensures the movement of the beam 1 in a horizontal plane. When the indicator is brought up to an unevenly charged object or an object of complex geometric shape, beam 1 is rotated so that the point of the arrow, charged with the pole opposite to the charge sign of the concentrator, is positioned to indicate the direction of the greatest gradient of the field, and according to the position of the arrow relative to the scale 5 in the form coordinate grid get the estimated value of the electrostatic field strength. 2 Il.

Description

The invention relates to a measurement technique and can be used to control the magnitude of the electric field strength in explosive industries accompanied by the electrification of recyclable materials in the chemical, oil refining and other industries.

The purpose of the invention is to simplify the design.

FIG. 1 shows an electrostatic field indicator design; in fig. 2 shows an indicator design for determining the intensity vector of the electrostatic field.

The electrostatic field indicator contains a horizontal beam G, made of electret in the form of two cones interconnected by bases, and fixed on axis 2, which is equipped with a torque compensation unit 3, a dielectric body 4 on which measuring scale 5 is applied, determining the electric field strength vector further comprises an additional axis 6 with the suspension element 7, the second torque compensation unit 8.

The electric field indicator works as follows.

When the indicator is introduced into the electrostatic field of a charged object due to the Coulomb forces of the electrostatic charges of the horizontal beam 1 made of electret and the charges of the electrified object, the horizontal beam 1 is set in motion. At the same time, it rotates, fixes in a position that is determined by the ratio of the electrostatic interaction forces and the rigidity of the adjustable torque compensation unit 3, according to the position of the horizontal beam 1 relative to the measuring scale 5 deposited on the inner surface of the housing 4, the magnitude of the tension electrostatic floor. Performing a horizontal beam 1 in the form of a two-sided arrow from an electret, with oppositely charged sides, provides a high concentration of electrostatic charges on the arrow points, which is caused by

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The indicator is highly sensitive, and its conicity ensures uniform distribution of the field along the generator arrow. In this indicator, the sensitivity of the horizontal beam 1 allows you to visually record the strength of the electrostatic field without using additional electrical measuring instruments. The convergence of the results of the evaluation of the electrostatic field intensity is ensured by placing the indicator at a certain distance from the surface, and its sensitivity can be controlled either by the adjustable torque compensation unit 3,

or the distance between the indicator and the object to be measured. To determine

vector of electrostatic field strength indicator contains the second node torque compensation 8, an additional axis 6 with an ellipse suspension element 7, in which axis 2 of horizontal beam 1 is attached, which provides movement of horizontal beam 1 in horizontal plane. When the indicator is brought to an unevenly charged object or an object of complex geometric shape, horizontal beam 1 is rotated so that the arrowhead, charged with the opposite sign of the concentrate charge pole, is positioned to indicate the direction of the greatest gradient field, and the position of the arrow relative to the measuring scale1 5, in the form of a coordinate grid, an estimated value of the electrostatic field intensity is obtained.

The electrostatic floor indicator consists of eight elements, is lightweight and can be made in a miniature version. The indicator does not require additional power, since it uses the energy stored by the electret in the process of its manufacture. The use of a dielectric material housing provides almost complete intrinsic safety of the device, it is necessary when estimating the strength of electrostatic fields in explosive industries.

The design of the indicator makes it possible to evaluate the field strength under continuous production conditions and use it as a sensor for a dangerous level of electrification.

Claims (1)

Invention Formula An electrostatic field indicator containing a horizontal beam mounted for rotation, an axis, an adjustable torque compensation unit and an indicator characterized in that, in order to simplify the design, the horizontal beam is made of electret and has the form of two cones interconnected by bases and charged with opposite signs, with the horizontal beam fixed to the axis, and the indicator is made in the form of a dielectric body, on the surface of which a measuring scale is applied in the plane of the angle of rotation of the horizontal beam. Inside the dielectric body there is an axis, which is fixed in the walls of the dielectric body so that it can rotate, and an adjustable torque compensation unit connected to the axis.