Electrochemical data converters. RU patent 2504038.

FIELD: electricity.

SUBSTANCE: electrochemical data converter (EDC) comprises a hollow body filled with electrolyte, closed at the ends by elastic membranes and divided by a partition with a channel, where the following elements are installed: working cathodes, two submembrane chambers with an anodes, and a DC source, minus ends of which are connected to the cathode, and plus ends - to the anodes. A new electrochemical converter is proposed, where in the submembrane chambers cleaning cathodes are additionally installed between the anodes and cathodes of the working cathode, the area of which is significantly larger than that of the working cathode, wherein the duration of the test cycle process with the disconnected working cathode the cleaning cathode is connected to the negative power source.

EFFECT: simplification by eliminating a magnetic device, creation of such an EDC design, in which the negative impact of EDC washed-out components that clog working cathodes and result in EDC failure is eliminated.

The invention relates to the electrochemical converters of information () concentration of a type intended, including for the transformation of oscillatory processes of mechanical nature into electrical signals.

Known intended for registration of mechanical oscillatory processes used, for example, in marine systems - electrochemical geophones, low-frequency receivers of hydroacoustic signals, electrochemical receivers pressure and other (see Viktor Borovkov, B.M.LEVITAN Graphs, A.A. Novikov, M. Novitsky, L.A. Sokolov, Electrochemical converters of information, «Nauka», Moscow, 1966, B.C. Borovkov, B.M.LEVITAN Graphs, E.M. Dobrynin, P.D. , A.A. Novikov, M. Novitsky, L.A. Sokolov and other Electrochemical converters of primary information, «engineering», Moscow, 1969, - I.V. Strishewsky, I. Dmitriev, .Б. Finkelstein, , «Nauka», Moscow, 1974. and others). These consist of a body, filled with electrolyte and system of electrodes (anode and cathode), located in a special way inside the body; the method of electrode and housing design is specific to the destination device.

Also known design for measuring pressure, consisting of a body in the form of a hollow cylinder, divided by a partition into two parts ( cavity), which are installed anodes, connected to the plus an external power source; in the septum a canal linking the cavity and in the channel has established working cathodes, connected to the minus an external power source. Cylinder with the ends tightly closed elastic membranes, and cavity filled with electrolyte, such as water solution KJ with a small addition of J 2 . All the details made of chemically inert materials. At rest due to the steady electrochemical equilibria in the system background the current in the external circuit is very small. At mechanical influence on one of the electrolyte membranes, flowing from one cavity to another, washes the working surface of cathodes, due to which in an external circuit current begins to flow, the value of which is proportional to the magnitude of the external mechanical impact. Proportionality is reached by selection (calculation) is the square of the cathode. Thus to the cathode is fed the electrolyte oxidized form and electrochemical reactions occur: recovery at the cathode and oxidation at the anode:

- at the cathode: J - 3 +2E→3J - (a restored form of electrolyte),

- at the anode: 3J - -2E→J - 3 (oxidized form of electrolyte).

This construction is chosen by the authors as a prototype (see DANILEVSKY fish, « devices in automation», .168-170, Kyiv, Kyiv. 1967).

The main disadvantage of the prototype and all known structures is the gradual leaching from parts that is in contact with the electrolyte, trace impurities contained in these parts. These traces of contaminants gradually, over a few months, deposited on cathodes, changing their effective area and hydraulic resistance, significantly impairing the basic characteristics sensitivity, threshold sensitivity, frequency and dynamic ranges, up to full output failure.

Therefore, in the technological cycle of manufacture , apart from a series of measures to ensure the purity of the parts, the purity of the Assembly process , purity industrial premises, air, etc., introduced an additional technological process consists in the fact that made withstand voltage connected to the power source for several months, then checked and rejected failed, and have passed the test allow to use.

The objective of this invention is to create such design , in which it would be blocked by the negative impact washed out of parts trace contaminants, clogging the working cathodes and imaging failure.

This goal is achieved by the fact that in an electrochemical Converter information containing filled with electrolyte hollow body, closed at the ends of elastic membranes and divided by a partition with a channel into which you installed the working cathodes, two camera with anodes, and constant-current source, the disadvantages of which are connected to and advantages to , cameras are installed between anodes and workers cathodes cathodes cleaning, square of which is larger than the area of working cathodes, while on the time behavior of the technological test cycle when disabled workers cathodes cathodes cleaning connects to the minus current source.

Such performance allows you to allocated from parts traces of contaminants at the cathodes cleaning, instead of working cathodes, what cathodes cleaning during the trial of the technological cycle connects to the minus supply and working cathodes is disconnected. With the purpose of increase of efficiency of action of cathodes cleaning their size make significantly more working area cathodes.

Brief description of the drawing. Figure 1 shows a containing cathodes cleaning with the scheme of their location in chambers.

The proposed device contains a hollow body 1, for example, in the form of a cylinder, the ends of which are hermetically closed elastic membranes 2, inside the body filled with electrolyte 3 and divided by a cross-partition with 4 channel, in which are working cathodes 5. In 6 cells are anodes 7, connected to the plus power source, and between anodes 7 and workers cathodes 5 are cathodes cleaning 8. In the external circuit a switch 9, milliammeter 10 and source current 11. To reduce the marriage at the expense of clogging working cathodes foreign deposits, as well as for reduction of terms of technological test cycle (TIC), after making the working cathodes 5 disconnected from minus current source 11 switch 9, and using the same switch connects to the minus current source cathodes cleaning 8, the surface of which there is copper (cathode) precipitation washed in the electrolyte concentration. Reduction of term TIC is due to the fact that the area of cathodes cleaning much more working area cathodes. After performing TIC cathodes cleaning is disconnected from a power source and produce the necessary checks connected with work cathode.

Use the proposed electrochemical information Converter allows you to significantly improve the reliability of , in particular to increase uptime by virtually eliminating the appearance of random failures when running as an element of the system of detection and management, and also reduce the number of defects in the manufacture and in 2-3 times, to shorten the duration of the technological test cycle.

Electrochemical information Converter containing filled with electrolyte hollow body, closed at the ends of elastic membranes and divided by a partition with a channel into which you installed the working cathodes, two camera with anodes, and constant-current source, the disadvantages of which are connected to and advantages to , characterized in that cameras are installed between anodes and workers cathodes cathodes cleaning, square of which is larger than the area of working cathodes, at the time of the technological test cycle when disabled workers cathodes cathodes cleaning connect to minus current source.