Single point vertical geophone

Abstract

The invention discloses a single-point perpendicular seismic detector. Two single-lead insulator binding posts are fixed to an upper cover. The lower ends of the single-lead insulator binding posts are welded to conductive lead springs, the lower ends of the conductive lead springs are welded to binding posts in coil rack binding post holes, and the other ends of the binding posts are connected with a leading-out terminal of an upper coil and a leading-out terminal of a lower coil in a welded mode; a coil rack is an integrated piece, the lower end of the coil rack is connected to the outer edge of a lower leaf spring in a pressed mode, the lower end of a lower magnetic shoe is connected to the inner edge of the lower leaf spring in a pressed mode, a boss of a lower cover is sleeved with the lower leaf spring, a groove in the upper end of the coil rack is connected to the outer edge of an upper leaf spring in a pressed mode, the upper end of an upper magnetic shoe is connected to the inner edge of the upper leaf spring in a pressed mode, and a lower boss of the upper cover is sleeved with the upper leaf spring; the upper end of the upper magnetic shoe is higher than the upper end of the upper coil and the lower end of the lower magnetic shoe is lower than the lower end of the lower coil; the deformation direction of a main reinforcing bar of the upper leaf spring and the deformation direction of a main reinforcing bar of the lower leaf spring are respectively anticlockwise. The single-point perpendicular seismic detector is simple in structure, low in cost, high in use reliability, long in service life, narrow in winding, wide in magnetic field, evener in magnetic field and more stable in output, and the number of dropping-resistant times is over 8000.

Description

technical field [0001] The invention relates to a geophone, in particular to a single-point vertical geophone. Background technique [0002] The geophone is a special sensor used for geological exploration and engineering measurement. It is a sensor that converts ground vibration into electrical signals. It uses artificial earthquakes to generate vibration signals in the stratum. Arrange sensors to receive vibration signals, then process and interpret the received vibration signals, and analyze the properties of formations at different depths, the shape of structures, etc. according to the frequency, amplitude, and velocity of the signals, so as to preliminarily judge whether there are conditions for oil generation and oil storage , and finally provide the well location to drill. However, the existing large-scale high-precision single-point vertical geophones are mainly the rotating core structure geophones produced by Jospeth Company of the United States. The shell of the...

AI Technical Summary

Problems solved by technology

The shell of the geophone is provided with an upper coil frame and a lower coil frame; the upper coil frame and the lower coil frame are plugged and fixed together, and the connection reliability of the coil frames of the two bodies is poor, and it is easy to scatter in frequent vibrations. open, short service life

The upper coil frame and the lower coil frame are respectively equipped with upper and lower coils, and the coils of the upper coil frame and the lower coil frame must be insulated; the upper coil frame and the lower coil frame are provided with a magnetic steel and a compensation ring in the middle, and the two There are silver-plated upper and lower magnetic shoes. The upper and lower edges of the upper and lower coils are consistent with the upper and lower edges of the upper and lower magnetic shoes. The magnetic field is narrow and the winding is wide. When the upper and lower coils move up and down, a part The coil is doing useless work, which leads to waste of the coil, and once the upper and lower spring pieces are deformed, the winding is not completely in the magnetic field, resulting in uneven magnetic field and unstable output; the upper end of the housing is provided with a cover, and the lower end of the housing is provided The lower cover, the upper cover and the lower cover are respectively crimped on the upper magnetic shoe and the lower magnetic shoe through the gold-plated upper spring piece, the upper inner contact piece, the lower spring piece, and the lower gasket, and the upper cover is also equipped with positive and negative pole insulators Terminals and insulating plates; the positive and negative terminals conduct electricity through contact with the upper and lower springs, the upper inner contact, the lower gasket and the upper and lower magnetic shoes, and there is a phenomenon of on and off when there is poor contact, which affects the output of the signal , and the upper and lower spring pieces, the upper inner contact piece, and the lower gasket need to be plated with gold, and the upper and lower magnetic shoes need to be plated with silver, which increases the cost and complicates the process; its structure is complex, assembly is difficult, and labor costs are high. The single-point geophone has poor reliability, short service life, complex structure, difficult assembly, high cost, and the number of anti-drops is less than 2000 times

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