Ocean bottom seismograph

A technology for seismographs and instruments, applied in the field of submarine seismographs, can solve problems such as large fluid resistance, inconvenient installation, and poor coupling, and achieve the effects of improving noise reduction, improving data quality, and saving electricity

Pending Publication Date: 2021-04-06
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the overall structure of the submarine seismograph mainly uses glass floating balls to provide buoyancy and serve as pressure chambers. All devices are placed inside the glass floating balls; the sinking coupling frame is released by electrochemical corrosion to realize instrument recovery. Its structure is compact and glass Floating balls have the dual functions of providing buoyancy and pressure chambers, savin...

Method used

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention belongs to the technical field of ocean equipment, and particularly discloses an ocean bottom seismograph, which comprises a shell, an instrument mounting frame, a monitoring device and an auxiliary recovery device, and the instrument mounting frame comprises a mud blocking plate and a lifting lug; the monitoring device comprises an instrument bin device and an electromagnetic acoustic release device, the electromagnetic release device is provided with a permanent magnet and an electromagnet, and the magnetic force of the electromagnet and the magnetic force of the permanent magnet repel each other; and according to the ocean bottom seismograph adopting the structural design, the counterweight assembly can be efficiently released through the arrangement of the electromagnetic release device, instrument recovery is achieved, meanwhile, electric energy can be saved, and only when the instrument needs to be recovered, the counterweight assembly needs to be released, and then the electromagnet needs to be powered. Besides, through the arrangement of the shell and the instrument mounting frame, various problems caused by the adoption of a traditional glass floating ball mode design are effectively solved, then the resistance of the ocean bottom seismograph is greatly reduced, the noise reduction level is effectively improved, and then the quality of collected data is improved to a certain extent.

Description

technical field [0001] The invention relates to the technical field of marine equipment, in particular to a seabed seismograph. Background technique [0002] Short-period submarine seismometers are widely used in the exploration and development of oil and gas resources, and the detection of the earth's internal structure. According to the different observation frequency bands of submarine seismographs, submarine seismographs can be divided into: broadband submarine seismographs, short-period submarine seismographs, etc. Broadband submarine seismographs are usually used to observe vibrations generated by active sources (natural earthquakes), while short-period submarine seismographs are more conducive to the observation of passive sources (artificial seismic sources). [0003] The working process of the submarine seismograph is: the experimenter reaches the predetermined position through the experimental ship, and after the instrument completes the inspection and realizes GP...

Claims

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Application Information

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IPC IPC(8): G01V1/38
CPCG01V1/38G01V1/3852
Inventor 刘丹杨挺王宜志黄信锋
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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