SU1038900A1 - Device for generating elastic pulse in liquid - Google Patents

Abstract

A DEVICE FOR THE GENERATION OF ELASTIC IMPULSES IN A LIQUID containing an energy storage device connected in series, a switch and a discharge device including a body and two electrodes, one of which is fixedly mounted on the body and the other on the core placed in the body In order to increase seismic efficiency by ensuring the reliability of the gaps in conditions of different salinity of the liquid, the casing is equipped with an annular winding included in the gating circuit, in which it is coaxially placed with the ability to move) in the direction of the electrode fixedly mounted on the housing, the core, you: made of ferromagnetic material, while on the housing between the electrodes there is a lock ring.

Description

The invention relates to a seismic acoustic technique, in particular, to a method and apparatus for generating elastic vibrations in water.

A device is known for creating an electrohydraulic effect in water due to a high-voltage discharge through special dischargers, in which one axial electrode located inside the cylinder along its axis creates an ionized plasma during discharge. Accelerated by a magnetic field excited by a second cylindrical electrode, axial with first cl}

However, these arresters can operate in a narrow range of voltage variations. By reducing the voltage or changing the salinity of the fluid, the discharge must be rebuilt by changing the distance between the electrodes.

Closest to the present invention is a device for generating elastic pulses in a liquid- The bones contain the energy storage device connected sequentially, a switch and a discharge device, which includes a housing and two electrodes, one of which is fixedly mounted on the housing and the other on the core disposed in the housing. The distance between the electrodes is set during changeover and remains unchanged during operation 2J.

However, in the known device, the reliability of the discharge of the discharge in water with different salinity is not ensured due to the fact that the distance between the electrodes during operation remains unchanged. This reduces the seismic efficiency of the device.

The purpose of the invention is the enhancement of seismic efficiency by ensuring the reliability of the arrester under conditions of different salinity of the liquid. .

The goal is achieved by the fact that in a device for generating elastic pulses in a fluid containing a drive, a switch and a discharge device connected in series, including a cylindrical case and two electrodes, one of which is fixedly mounted on the case and the other on the core placed in the case. In the arrester circuit, an annular winding in which is coaxially displaced with the possibility of displacement in the direction of the electrode fixedly mounted on the housing, the core made of ferromagnets itnogo material, wherein the housing is established between the electrodes stoporyoe koltssu; This makes it possible to vary the distance between the electrodes in the discharge process and thereby reliably ensure the gap breakdown irrespective of the degree of salinity of the surrounding liquid.

Figure 1 is a diagram of the device; 2 is the discharge design.

The device contains energy storage device 1 in series, switch 2 and discharge 3, which includes a housing 4 with an annular winding 5, in which the core 6, coaxially aligned, is made of ferromagnetic material with a movable electrode fixed on it 7. A retaining ring 8 is placed on the body and insulating sleeves 9, on which the fixed electrode 10 is rigidly fixed.

The device works as follows.

at the moment of discharge of accumulator 1 energy into the winding 5, a current is supplied, the core 6 under the action of magnetic flux begins to move, approaching the stationary electrode 10. At the moment when the distance between the amp and i becomes less than some critical, an interelectrode gap is broken, the accumulator energy is discharged and an elastic wave arises. The locking ring 8 can move along the thread and prevents the kg3 from being prevented. The implementation of the energy storage device in the form of unified modules allows for multi-electrode discharge. In order to provide the maxi aly, the amplitude of a single-digit energy pulse is in the range from 6 to 10 J with a supply voltage of 220 to 600 V.

The proposed device, Ea, by moving one of the electrodes ensures reliable operation of the gaps, regardless of the salinity of the surrounding liquid, which can vary over a wide range. This ensures high seismic efficiency of the device in various operating conditions.

Claims (1)

DEVICE FOR GENERATING ELASTIC PULSES IN A LIQUID, containing an energy storage device connected in series, a switch and a spark gap, including a housing and two electrodes, one of which is fixedly mounted on the housing * and the other on a core placed in the housing, which is different with the fact that, in order to increase seismic efficiency by ensuring the reliability of the arrester in conditions of different salinity of the liquid, the casing is equipped with an annular winding included in the arrester circuit, in which it can be coaxial with Tew movable in the direction of the electrode which is fixedly mounted on the housing, a core made of ferromagnetic material, with electrodes on the housing between a stop ring. > g - 1,038,900 ’