Anti-loosening spherical multi-beam transducer

Abstract

The invention belongs to the seismic exploration technical field and relates to an anti-loosening spherical multi-beam transducer. The anti-loosening spherical multi-beam transducer comprises a shell, a top cover, a sleeve and an electrode main body; the sleeve sleeves the upper part of the electrode main body; clamping positions are arranged in the shell; the sleeve and the electrode main body are movably arranged at the clamping positions of the shell; the sleeve and the shell enclose a discharge cavity; the discharge cavity is filled with electric conduction liquid; the lower part of the electrode main body is arranged in the electric conduction liquid; the shell is fixedly connected with the upper cover; a buffer cavity is formed between the sleeve and the upper cover; and adjustment components are arranged in the buffer cavity. With the anti-loosening spherical multi-beam transducer of the invention adopted, transduction conditions are controllable, so that test comparison can be facilitated; the frequency of vibration waves can be adjusted, so that different geological conditions and exploration requirements can be satisfied; the position adjusting assemblies are designed, so that control on the distance between discharge electrodes can be realized, and comparative analysis and effective selection of corona and arc discharge in a test can be facilitated, and the flexibility of field exploration adjustment can be improved.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to an anti-loosening spherical multi-beam transducer. Background technique [0002] The discharge of high-voltage pulses in water will generate instantaneous energy waves. The waveform and frequency of this energy wave are similar to seismic waves, and can be used to simulate seismic waves for mineral resource exploration. The instantaneous energy wave passes through the discharge device and propagates down the stratum, passes through different geological strata for refraction and reflection, and is finally received by the detector to judge or reproduce the ore-controlling structure of the stratum. As the name implies, discharge in water must have a certain water body. For example, in 2009, the Institute of Electrical Engineering of the Chinese Academy of Sciences and the Guangzhou Marine Geological Survey successfully developed the moray 20 kJ electric spark source syst...

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Problems solved by technology

[0003] A discharge electrode disclosed in Chinese patent 200810056793.3, the lower end of the electrode is open, and it is mainly used in the field of marine seismic exploration. It needs a wide water area and cannot be used on land.

Chinese patent 201010541046.6 discloses a phased array electric spark sub-seismic source for seismic exploration. Its bottom is designed as a pyramid structure, and the space formed by the positive and negative electrodes is small. The outer wall of this space is thin, and it is the transition between the two structures. , after multiple discharges, it is easy to break; at the same time, the positive end of the electrode has just touched the surface of the liquid and has not penetrated into it, which is prone to discharge along the surface. It will look for a channel for circulation and release, which will cause insulation breakdown, cable breakage, and damage to the host device in severe cases

In addition, the single-electrode discharge end face is small, and the electrode itself is easily damaged.

An electro-acoustic conversion electrode disclosed in Chinese patent 201510146327.4, after multiple discharges, it is easy to cause the soil to loosen, and it needs to be compacted multiple times; since multiple single-core insulated cables of equal length are bundled and pass through the metal cap and the inside of the device, there is no The transition makes it difficult to fix the position deep into the bottom of the device; because the center conductors of the exposed multiple insulated cables are welded together, the stretching vibration after multiple discharges causes the weld to be easily broken, and the exposure of the weld also increases Possibility of air creeping discharge

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