SU1229698A1 - Electrodiffusion transducer of fluid flow rate - Google Patents

Abstract

The invention relates to a measurement technique and can be used to measure the speed of movement of an electrically conductive fluid. The aim of the invention is to improve measurement accuracy. For this, the speed sensor housing 1 is made in the form of a cylindrical vessel with a slit hole 2 in its frontal part along the generatrix of the lateral surface. An electrode 3 is placed on the outer surface of the housing symmetrically with respect to the slit hole, on the surface of which, as the fluid flows, the ionic part of the electrical double layer that occurs at the metal-solution interface is destroyed. An imbalance occurs when an equal-sized electrode 3 and an electrode 4, which is fixed on the inner opposite slit hole 2 of the lateral surface of the housing, changes as the flow velocity changes. The magnitude of the current in the external circuit is recorded by the device 5. 2 Il. i (/ 10 ГЧЭ со О5 со оо

Description

The invention relates to a measurement technique and can be used to measure the speed of movement of an electrically conductive fluid.

The purpose of the invention is to improve the measurement accuracy.

FIG. 1 is a schematic diagram of a fluid velocity sensor; 2, the same cross-section.

The electrodiffusion fluid velocity sensor consists of a cylindrical body 1 filled with liquid to be measured, having a slot 2, an electrode 3 located on the outer side of the body, an electrode 4 installed inside the body 1, and a recording device 5 connected to electrodes 3 and 4.

The dimensions, shape and location of the opening 2 provide ionic communication of the fluid inside the housing 1 with the external flow fluid and do not allow under its influence the movement of the fluid inside the housing 1. This is achieved, for example, by making a slot 2 through the circumferential housing 1 oriented by the opening 2 to meet the measured flow of fluid.

The sensor works as follows

When the flow of fluid flows on the surface of the electrode 3, the ionic part of the electric double layer that occurs at the metal-solution interface is destroyed. Breaks down

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ion equilibrium between electrodes 3 and 4, as a result of which an electric current arises in the external closed circuit, the magnitude of which is detected by device 5. When the velocity of the fluid flowing around electrode 3 changes, the flow of ions with more or less electron release also changes current value in the external circuit, which is recorded by the device 5.

The proposed sensor provides sufficient measurement accuracy.

Claims (1)

Invention Formula An electrodiffusion fluid velocity sensor, containing two identical electrodes connected to a recording device, one of which is placed in an impermeable part of the body that communicates with the environment, because, in order to improve the measurement accuracy, the body is designed as a cylindrical the vessel, in the frontal part of which along the lateral surface forming a slotted hole, the first electrode placed in the housing is mounted on the lateral surface opposite the slot opening and the second Electrode equal in size to the first, located symmetrically with respect to the slotted holes on the exterior surface of the housing. BUT FIG. 2 Compiled by V. Nazarov Editor A. Kozoriz Tehred G. Gerber Proofreader Order 2447/46 Circulation 778 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4