SU1221684A1 - Liquid adjustable resistor - Google Patents

Description

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Isoooretation relates to electrical engineering, in particular, to fluid-controlled adjustable resistors, and can be used with a programmable change in resistance, for example, in lighting control devices in poultry houses.

The purpose of the invention is to simplify the construction of a liquid resistor by eliminating means for its rotation.

Figure 1 shows the proposed three-phase adjustable liquid resistor, general view} in FIG. 2 and 3 show the intermediate and final positions of the electrolyte at different positions of the electrodes j in FIG. 4 and 5 show the constructive arrangement of a dielectric elastic material on the surface of tori} in FIG. 6 — channels for relieving gas overpressure, an embodiment,

The dielectric case of the resistor (figure 1) consists of coaxial coaxially located outer 1 and inner 2 disks. Elastic dielectric spacers 3 seal a toroidal cavity located between disks 1 and 2 and partially filled with electrolyte 4. Ring electrodes 5 and 6 connected to current leads (not shown) with phase and neutral wires (not shown) are fixed on the internal surfaces of the cavity.

Figure 1 shows three identical liquid resistors for adjusting the resistance of the three phases.

The resistance adjustment unit can be made, for example, in the form of guide rods 7 screwed into the base 8 and through the yoke 9 interacting with the screw 10 screwed into the internal discs 2 and located at the base 8 with the possibility of rotation.

The outer resistor discs 1 are fastened to the base with 8 screws 11.

The end surfaces of the toroidal sealed cavities can be made of a dielectric elastic material, for example, rubber brand 370 G or VIAM-2, or 3311, glued to the end surfaces of disks 1 and 2.

Figure 5 presents the option of sealing glued discs 12 of rubber and clamping rings 13.

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In the case of manufacturing discs from metal, it is necessary to exclude their closure with each other both through guide rods 7 and through 5 screw 10 (they must be made of dielectrics). For safety reasons, the side surfaces of the discs must be “open.” electrical insulating varnish. ten

Making disks of dielectric material eliminates the need to completely cover the end surfaces with dielectric elastomeric material (FIG. 5), and the rods 7 and screw 10 can be made of both metal and dielectric material.

To relieve overpressure 20, in the resistor there are provided bleed channels 14-16 (Fig. 6), in which bleed valves can be installed (not shown). Channels 14-16 can also serve 25 to fill the toroidal cavities of the resistor with electrolyte.

Liquid adjustable resistor operates as follows.

In the initial position (Fig. 1) the resistance of the resistor is min 2Q. When the screw 10 is rotated, the inner disks 2 move upward along the rods 7. Depending on the amount of movement of the internal parts of the tori from the initial position, electrolyte 4 has a different area of contact with electrodes 5 and 6, thereby providing different resistance values between them up to infinity.

Thus, simplifying the design and maintenance of the resistor is provided. In addition, no energy is required to maintain a predetermined value of resistivity.

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Claims (1)

Invention Formula A fluid adjustable resistor, 5 comprising a case made in the form of two coaxially insulated coaxial disks, forming a toroidal sealed 55 and partially filled with electrolyte cavity with end surfaces of a dielectric material, on the inner surfaces of which the ring electrodes are fixed, and the node characterized in that, in order to simplify the construction, the end surfaces of the toroidal sealed cavity are made arranged with mutual axial vertical movement by the adjustment unit of the resistance value. Z J (rig 2 five FIG. five (pui.3 74 .16 FC1.6 Editor A. Ogar Compiled by Yu. Volkov Tehred V. Kadar Proofreader V. But 1616/56 Circulation 643 Subscription VNIIPI State Committee SSOR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Fshgaal GShP Patent, Uzhgorod, st. Project, 4