SU98229A1 - - Google Patents

Description

The acquired device is intended for marine electrical prospecting of minerals.

Usually, electroscopic orskop devices allow one to carry out measurements for only one trip of an electrically-operated ship with an independent distribution of power supply electrodes, which entails, if necessary, performing electrical prospecting works with several electrode spacings, the corresponding increase in the number of flights and, therefore, significant increase in costs and funds for electrical exploration.

The inventive device, poses 5 liters, during one trip of the ship, and to make measurements with several) 1F1 different spacing of electrodes.

This device is a marine electrical exploration braid of wires with several naramp electrodes spaced along it, receiving power from the generator through resistors chosen so that the currents through the defined electrode pairs are numerically equal to the corresponding coefficient

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distance

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year

where TI, G2, G3 and G4 are the distances between the electrodes, in the four-electrode circuit. Intention, with several dissimilar electrode spacings in a single trip of the ships in the device described by disconnecting the generator to one or two electrodes, which is automatically activated by the maximum relays, the synchronous switching of the resistance of the above-mentioned resistances of the rotated electrodes, triggered by the maximum relay, the synchronous switching of the resistance

Che, rtea; e presents an irinitial scheme, uetrois-so-called. which started:

(D) is a generator of current and current; (2) -, - | Locomotive Pulsator; (o) - a set of co-motivations for the selection of the required current strength through certain electrode pairs; (-1) - Iaitaiu a lini (-Sh) with P1estyu paramp mak-: i.alichy relay AI-Ab and Bi-Be; (5) - iriem line (MN); (6) - automatic recorder (potentiometer) for measurement;

(7) - Sonotro switch;

(8) - Iitani current strength recorder;

(9) - ballast resistance; (10) - automatic iolization compensator.

As a power source in the described device, generators can be used that are irradiated at existing electrical survey stations (with a voltage of 900 V). The pulsator must be oil-free and must provide a non-skim current switch of 25-30 a. The calculation of the resistances (3) is produced in such a way that the current value for a certain line length (AB) corresponds to the distance coefficient (K) of this installation.

In i; aa; .ioai from the supplying BCIBCU; n ((A) n (B) to the corresponding "power supply) Power. The shaft is turned on six (by the number of spacing) of the maximum relay.

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With the help of power supply (3) the length of all products of a different line (AB) is selected; the current strength in prices of drugs | is equal to or the distance coefficient (K). In this case:

a) the graph of the quantities measured by the registrar will be a graph of a specific specific coordinate of the appropriate scale;

b) the measured differences of the 1 potentials for all the separations will be of the same order, which makes it possible to register) nx with the same sensitivity of the automatic sensitivity meter 6):

c) a change in the “silt. automatic current, 1, there is an overlap1; refinement of the maximum relays Ai, BW AO, B2, etc.

She ate current adjustment and commissioning e. | D. with. An electrode filing (MN) with the help of an ayra riser compensator - (1C) the braid of wires - with electrodes moves at a given speed along the profile. From the beginning: 1 m 1 gsr | of the Motion of the spit turns on the switching device (7), with the help of the cat 1, the corresponding spiroids (3) are periodically included in the target (AB), and the current generator is switched on and off.

A full cycle of measuring one profiling point with six spacing of the power supply LIIII represents the following sequence of actions.

The maximum current is connected to the circuit (AB) through the Corresponding Resistance (3), which is why the Aa and Be relays operate; The iperjiCTpaTOpa (6) pen, for a short period of time (on the order of 1 sez.), reaches a position that determines the magnitude of the measured potential difference. Lee s fixes it on the tape, after which the current is turned off and on. for adjusting the compensation voltage. Following this, the circuit (AB) through the following resistance (3) turns on a reduced power supply, and then triggers the AS and Bs relays, etc.

A RegStrator (8) records the amount of supply current that you need to know to accurately calculate apparent resistivity.

As can be seen from the diagram, in the drawing, the full CYCLE of the operation of the switching device (7) is supported by the eight positions of its engine: six workers, who are switched on, who is measuring, and two idle; The last two nolo / cues of the engine fic;:, they celebrate the Coquez of ONE 1 and start the next measurement cycle.

An optical device for conducting marine electrical prospecting works meets the basic requirements of the Russian geophysical works and allows a significant increase in the iron productivity of labor.

When} these types of devices purchased will provide the ability to:

1. Perform continuous profiling: Vanp in the sea With the help of an automatic recording of the measurement Simultaneously with six feedlines (AB), with the aim of following the future horizon at the bottom of the field.

2. Perform probe by conducting two or three profiles, and about one .mu) shruta.

As a result of measurements of two or three IROPhiley, it will be possible to construct along the nrofile a schedule of soundings in the number of points, equal to the number of profile points.

3. Practical calculations show that at a ship speed of 7200 m. Per hour it is possible to carry out 40-50 km. a profile (with six spans at a density of points observed in the profile through 125-200 m.), or 20-25 km. double profile, according to which you can build up to 150-200 vertical soundings with (AB) max. - 4000 m., With the indicated thickness of the points of the irofil.

And the rede fi nition is

A device for marine electrical prospecting, which is based on the fact that, in order to make measurements for one pciic ship with (A few different supply electrodes, several pairs of electrodes are fed along the wire spit, fed by electrically generator through resistances, chosen in such a way that the current through a certain pair of electrodes corresponds to the distance coefficient for a given length of the line (AB), and the generator is connected to that line of electrodes using max. synchronized with automatic switching of the above resistances, produced by a switch rotated by an electric motor.