low frequency detector

A low-frequency detector and coil frame technology, applied in the direction of seismic signal receivers, etc., can solve the problems of poor low-frequency signal receiving ability, narrow frequency band, high distortion, and achieve the effects of increasing weight, convenient operation, and reducing the width of the winding slot.

Active Publication Date: 2017-02-15
WEIHAI SUNFULL GEOPHYSICAL EXPLORATION EQUIP
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems of poor low-frequency signal receiving ability, low precision, narrow frequency band and relatively high distortion of the existing moving coil detector, the present invention provides a low-frequency (below 10 Hz) signal with strong signal receiving ability, high precision, and high frequency band Narrow, low-distortion low-frequency detector

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Embodiment Construction

[0046] Such as figure 1 As shown, the geophone of the present invention includes a housing 14, the upper cover 1 is connected to the upper end of the housing 14, the lower cover 11 is connected to the lower end of the housing 14, an O-shaped sealing ring 3 is arranged between the upper cover 1 and the housing 14, and the lower cover 11 and the housing 14 are provided with an o-shaped seal ring 3 . An insulator 2 is provided on the upper cover 1 at the lead-out terminal.

[0047] The shell 14 is equipped with a magnetic steel 6 , the upper part of the magnetic steel 6 is connected with the upper yoke 5 , and the lower part of the magnetic steel 6 is connected with the lower yoke 17 . An upper bobbin 4 and a lower bobbin 8 are arranged between the upper yoke 5, the lower yoke 17 and the inner wall of the housing 14. The upper bobbin 4 and the lower bobbin 8 form a bobbin, and the middle part of the bobbin is the upper bobbin 4 A ring groove is provided at the junction with th...

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Abstract

The invention relates to a low-frequency detector and solves the technical problems that a moving-coil detector is poor in low frequency signal receiving capability, low in precision, narrow in frequency band and relatively high in distortion. The low-frequency detector comprises a shell. A coil framework formed by an upper coil rack and a lower coil rack which are connected is disposed in the shell. An upper leaf spring is connected to the upper coil rack. A lower leaf spring is connected to the lower coil rack. Three ribs are disposed on each of the upper leaf spring and the lower leaf spring. The outer diameter of the upper leaf spring is 23.5-24mm. The outer diameter of the lower leaf spring is 23.5-24mm. Each rib is 17-17.5mm in length. The low-frequency detector is widely applicable to fields of seismic exploration and vibration detecting.

Description

technical field [0001] The invention relates to a geophone used in the field of seismic exploration, in particular to a low-frequency geophone. Background technique [0002] The moving coil geophone is a conventional sensor used in seismic exploration and engineering surveying. It converts ground vibration into an electrical signal proportional to the vibration speed, and is a device that converts mechanical energy into electrical energy. With the continuous development of the exploration of deep strata structures, since the reflected waves of deep strata are usually low-frequency and weak signals, the natural frequency of the existing moving coil detectors is 10Hz and above, and the low-frequency signal receiving ability is poor. The technical defects of poor interference ability, low precision, narrow frequency band and relatively high distortion can no longer meet the needs of current high-precision exploration. Moreover, the service life of the existing moving-coil geop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/18
Inventor 任强颜永安宋军政毕志勇陈春国王巧艳
Owner WEIHAI SUNFULL GEOPHYSICAL EXPLORATION EQUIP
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