A High Frequency Omnidirectional Velocity Geophone

Abstract

The invention discloses a high frequency omnidirectional velocity geophone, and belongs to the field of geophones.According to the high frequency omnidirectional velocity geophone,through a unique three-arm spring piece, the frequency of a geophone is greatly increased and raises above 60 Hz,and the ability to an explore shallow seismic signal is ensured;a special circlip groove structure is adopted, upper and lower spring pieces are fixedly mounted in the opposite directions, the omnidirectional working state of the high frequency omnidirectional velocity geophone is ensured, the allowed inclination angle of working is 0 degree to 180 degree, field construction is greatly facilitated, construction difficulty is reduced, meanwhile the arrangement of a one-way splitting assembly in the circlip groove ensures the stability of the connection between the lower spring piece and a wire frame, so that a circlip is unlikely to drop out of the circlip groove due to vibration or collision,and thus the stability of the high frequency omnidirectional velocitygeophone is improved; and at the same time, the lower spring piece or the circlip can be taken out for maintenance and replacement, thusthe probability of the entire geophone being scrapped due to damage of a partial part is effectively reduced, and the utilization rate of resources is increased.

Description

technical field [0001] The invention relates to the field of geophones, in particular to a high-frequency omnidirectional velocity type 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. The seismic data acquisition system is mainly composed of sensors (also known as geophones) and digital seismographs. At present, the geophones used in seismic exploration are mainly moving coil geophones. The geophone is a device embedded in the ground, which converts the ground vibration caused by the seismic wave into an electrical signal and sends the electrical signal to the seismograph through a cable; the digital seismograph amplifies the received electrical signal and converts it into binary data through an analog / digital converter , organize data,...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the geophones on the market are low-frequency geophones, which are suitable for exploring deep seismic wave signals, but not suitable for exploring shallow seismic wave signals. To explore shallow seismic wave signals, it is necessary to increase the natural frequency of the geophone itself, which is difficult to achieve in the industry

Moreover, the sensitivity of geophones on the market is generally low, and multiple geophones in series need to be used to increase the sensitivity, and the direction of the working state is also limited. The inconvenience of field construction increases the difficulty of field construction. At the same time, in order to make the fixation tight and improve the stability, the circlip and spring leaf are often directly connected to the coil assembly as a whole, but this method is not convenient for later maintenance. Usually a small part failure will lead to the scrapping of the whole geophone, which reduces the utilization rate of resources and causes serious waste

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