SU432341A1 - ELECTROKINETIC FLOW METER FOR DIELECTRIC FLUIDS - Google Patents

Description

one

Electro-kinetic flow meters are known for measuring the flow of liquids, comprising a pipeline, inlet and receiving electrodes made in the form of grids and located in the cross section of the measuring channel.

The proposed electrokinetic flow meter allows to increase the sensitivity and expand the flow measurement range due to the fact that in it the receiving electrode is designed as a hemisphere with a needle and is installed axially in the extended area of the measuring channel.

The drawing shows an abundance of the described device consisting of an input cylindrical electrode / simultaneously serving as a feed channel, a dielectric cylinder 2 with a cylindrical channel 5, a dielectric sleeve 4 with a hemisphere 5 reinforced in it in the form of a hemisphere 5 with a needle 6 and showing device 7 The needle 6 of the receiving electrode is located along the axis of the scab of the liquid flowing out of the channel 3. To reduce the adsorption of charges on the inner walls of the sleeve 4, the cylindrical channel of the latter is made of a larger diameter than the diameter of the channel 3 (i.e., the charged jet of the dielectric fluid flowing out of the channel 3 becomes flooded and thus isolated from the walls of the sleeve 4). Another part of the receiving electrode 5 is made in the form of a hemisphere for the selection of charge due to the diffusion of the departed 13 stream of submerged jet.

The flow meter works: as follows. When the dielectric fluid moves through the dielectric channel 3, which is made by nairnmer, nz fluoroplastic or vinyl plastic, due to electrolytic effects, the liquid is electrified, and then the charge is repelled from the liquid by the receiving electrode (5-6). Connected between the electrodes / and (5-6), the indicating device 7 measures a current proportional to the flow velocity of the fluid, and hence to the flow rate of the fluid.

Subject invention

An electrokinetic flowmeter for dielectric fluids containing an input and a receiving electrode installed in a measuring channel and a measuring device, characterized in that, in order to increase the sensitivity and expansion of the measurement range, the receiving electrode is made in the form of a hemisphere with a needle and is mounted along the axis extended area of the measuring channel.

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