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A technology of geophones and gas springs, applied in the direction of seismic signal receivers, etc., can solve the problems of induction signal disorder, complex structure, and high processing precision requirements, and achieve the effects of reducing false frequency interference, increasing response bandwidth, and improving lubrication
Inactive Publication Date: 2013-03-06
浩华科技实业有限公司
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Problems solved by technology
Its structure is more complex, more magnets are used, and the processing accuracy is high.
Moreover, the magnetic circuit is complex and the induction signal is disordered
Method used
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[0019] The shell 4 and the upper and lower covers 2, 11 are packaged into one body through the upper and lower sealing rings 3, 12, and the core columns of the upper and lower covers 2, 11 tightly clamp the magnet 7 and the upper and lower magnetic shoes 14, 8 on the magnet 7 to form a fixed connection, and an external terminal 1 is inlaid on the upper cover 2 . Between the shell 4 and the magnet 7 and the magnetic shoes 14, 8, there is a skeleton combination packaged together by the moving coil skeleton 5 and the upper and lower skeleton covers 18, 13, and two inner horizontal terminals 16 are embedded on the moving coil skeleton 5, and on the upper The skeleton cover 18 is inlaid with two internal upper terminal posts 19, the internal horizontal terminal posts 16 are connected to the two terminals of the coil 6 and connected to the two internal upper terminal posts 19 through two horizontal wire soft springs 17, the two internal Upper terminal 19 is connected with two extern...
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Abstract
A geophone with a magnetic-liquid sealed gas spring consists of external binding posts, an upper cover, an upper sealing ring, a casing, a movable ring frame, a coil, a permanent magnet, a lower magnetic shoe, lower magnetic liquid, the gas spring, a lower cover, a lower sealing ring, a lower framework cover, an upper magnetic shoe, upper magnetic liquid, an inner binding post, a transverse soft connecting spring, an upper framework cover, inner upper binding posts and upper soft connecting springs. The casing, the lower cover and the upper cover are integrally packaged via the upper sealing ring and the lower sealing ring, the movable ring framework, the upper framework and the lower framework are integrally packaged between the casing and the magnetic shoes of the magnet to form a framework combination, a certain gap is formed between the framework combination and the upper cover and the lower cover as well as between the magnetic shoes and is sealed by the magnetic liquid, and the gas spring formed by nitrogen gas is sealed in the gap. Compared with other geophones, the geophone adopts the gas spring sealed by the magnetic liquid to support a movable ring of a detector, and accordingly, elastic coefficient of the detector increases along with increase of displacement, and purposes of the high-performance detector are achieved.
Description
technical field [0001] The invention relates to a geophone, in particular to a magnetic liquid gas spring geophone which utilizes the sealing performance of a magnetic liquid material near a magnet to form a gas spring of the geophone. Background technique [0002] A geophone is a special sensor used in geological exploration and engineering surveying. It is a sensor that converts ground vibration into an electrical signal, or an energy conversion device that converts mechanical energy into electrical energy. [0003] The basic principle of seismic exploration is to use artificial earthquakes to generate vibration signals in the formation, and according to the design requirements, arrange sensors (ie, geophones) at different distances from the excitation point to receive vibration signals, and then process and interpret the received vibration signals. According to the frequency, amplitude, velocity and other information of the signal, the properties of strata at different d...
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Application Information
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