Electric spark earthquake focus for ocean exploration

Abstract

The invention relates to a sea exploration sparker source which comprises a discharging switch (5), a transmission cable (6), a discharge electrode (7) and a control circuit (8) and is characterized in that the sparker source also comprises a rectification filter circuit (1), a full-bridge inverter circuit (2), a high-voltage rectification circuit (3) and a storage capacitor group (4), wherein the rectification filter circuit (1) converts three-phase AC voltage into DC voltage, the storage capacitor group (4) is charged and can store electric energy, the transmission cable (6) is connected between the discharging switch (5) and the discharge electrode (7) to transmit the electric energy, the discharge electrode (7) is used for finishing the release of the electric energy, the conversion of the electric energy from sound energy is realized, and the control circuit (8) realizes the control triggering function and the safety protection function of the sparker source.

Description

technical field [0001] The invention relates to a geophysical prospecting device, in particular to a marine prospecting electric spark seismic source which uses high-voltage pulse discharge to generate pulsed sound waves. Background technique [0002] As a high-power pulse sound source, compared with other pulse sound sources (such as controllable sound source, ultrasonic sound source, heavy hammer sound source, air gun sound source, explosive sound source), it has the advantages of simple structure, safety, The advantages of easy control and adjustment of energy, accurate excitation time, high construction efficiency and high power have been widely used in geological exploration, such as the marine and land electric spark source developed by the Institute of Electrical Engineering, Chinese Academy of Sciences (maximum energy storage up to 600kJ), Holland Geo-resources company's multi-electrode marine high-resolution electric spark source, etc., Chinese patents 85103629, 012...

AI Technical Summary

Problems solved by technology

[0003] Chinese patents 85103629 and 01233188 are used for land seismic exploration, using power frequency conversion charging technology, gas discharge switch, single-electrode discharge mode, large volume, low main frequency of sound waves, and inconvenient switch adjustment and maintenance

Geo-resources' multi-electrode marine high-resolution electric spark source adopts intermediate frequency resonant charging, and the high-voltage conversion part is an oil-immersed structure, which is large in size and inconvenient to maintain

Images