Geophone
A technology of geophones and shells, which is applied in the direction of seismic signal receivers, seismology, instruments, etc., can solve problems affecting the detection accuracy of geophones, and achieve the effect of ensuring accuracy and ensuring detection accuracy
Inactive Publication Date: 2021-05-28
周婷婷
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Problems solved by technology
[0005] The invention provides a geophone, which has the advantages of more accurate seismic wave exploration, and solves the problem that lateral vibration affects the detection accuracy of the geophone
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[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0018] see Figure 1-3 , a geophone, comprising a housing 1, an upper cover 2 is fixedly installed on the upper side of the housing 1, a sound-absorbing coil 3 is fixedly set up and down inside the housing 1, and an installation sleeve 4 is fixedly installed on the upper and lower surfaces of the inner cavity of the housing 1, and the installation sleeve A compression spring 5 is fixedly installed between the inner and outer jackets of 4, and the inner surface...
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The invention relates to the technical field of seismic survey, and discloses a geophone which comprises a shell, an upper cover is fixedly installed above the shell, the upper portion and the lower portion of the interior of the shell are fixedly sleeved with sound absorption rings, installation sleeves are fixedly installed on the upper surface and the lower surface of an inner cavity of the shell, compression springs are fixedly installed between the inner sleeve and the outer sleeve of each installation sleeve, the inner surface of each installation sleeve is movably sleeved with a silencing sleeve, the lower portion of an inner cavity of each silencing sleeve is fixedly sleeved with a permanent magnet, and a mounting shaft is arranged in the middle of the top of each silencing sleeve. According to the geophone, external wind makes contact with a wind groove, large wind sound is generated, sound waves make contact with a diaphragm to generate vibration, under the guiding effect of the inclined face of the sliding groove, a thrust rod is pushed towards one side on each silencing sleeve, each silencing sleeve is driven to rotate towards one side, the sound waves are converted into mechanical energy, and meanwhile the sound waves are absorbed by the silencing sleeves, so that the influence of the sound waves on a spring piece and a coil is prevented, so that the detection precision of equipment is ensured.
Description
technical field [0001] The invention relates to the technical field of seismic survey, in particular to a geophone. Background technique [0002] The geophone is an electromechanical conversion device that converts the seismic wave transmitted to the ground or water into an electrical signal. It is the key part of the field data collection of the seismograph. [0003] At present, the commonly used seismic exploration equipment in the field of oil and gas exploration is a moving coil velocity detector, which fixes the moving coil on the spring coaxial with the magnet, and the spring and the coil move relative to the magnet through external vibration, and the The coil generates an induced electromotive force, and the magnitude of the induced electromotive force is proportional to the relative motion speed of the magnet. The analog signal output by the coil is consistent with the speed change law of the ground mechanical vibration. [0004] In seismic exploration operations, t...
Claims
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IPC IPC(8): G01V1/18
CPCG01V1/182G01V1/184
Inventor 不公告发明人
Owner 周婷婷