Throwing-in device of sea seismograph

Abstract

The invention provides a throwing-in device of a sea seismograph. The throwing-in device comprises a frame and a sunken coupling frame. The frame prevents sea beaten and keeps the seismograph horizontal, and the sunken coupling frame is a frame body which provides sinking force for the seismograph and is hollow in bottom. Supporting rods used for supporting the sunken coupling frame in a connected mode are arranged at the two ends of the frame; an instrument tank used for accommodating seaquake observing devices is arranged in the middle of the frame, and a hanging ring convenient to hang is arranged at the top end of the instrument tank; a lever used for prizing the instrument tank is mounted on the upper side, corresponding to the instrument tank, of the frame in a pivoted mode, a semi-open hook matched with the hanging ring at the top end of the instrument tank in a hooking mode is arranged at one end of the lever, the other end of the lever stretches out of the frame, and a balance weight used for prizing the instrument and the seaquake observing devices in the instrument tank is connected to the tail end of the lever; a flexible connecting rope is connected between the balance weight and the tail end of the lever, and the balance weight connected to the bottom end of the flexible connecting rope is lower than the sunken coupling frame in the vertical direction.

Description

【Technical field】 [0001] The invention relates to the technical field of marine seismic observation, in particular to a launching device for a seabed seismograph. 【Background technique】 [0002] The ocean bottom seismometer (OBS) and its subsea seismic observation are high-tech developed in recent years. They are widely used in oil and gas exploration, scientific research, disaster prevention and mitigation, etc. A new growth point in development. The submarine seismograph is a seismic observation system that places the geophone directly on the seabed. In marine geophysical investigation and research, it can be used not only for the detection of marine artificial seismic profiles, but also for the observation of natural earthquakes. The detection and observation results can be used to study the velocity structure of the oceanic crust and mantle and the dynamic characteristics of the evolution of plate subduction zones, trenches, and troughs, and can also be used to study se...

AI Technical Summary

Problems solved by technology

[0003] At present, developed countries such as Japan and the United States use underwater robots to launch submarine seismometers, and the cost of launching one time is relatively expensive; in addition, the rest of the submarine seismometers are basically launched directly from the sea to the bottom of the sea for free landing

When the seabed seismograph is directly launched at sea, the moment the seabed seismograph is in contact with seawater during the launch process, it is very easy to cause sudden violent vibrations, which may directly cause damage to the seabed seismograph; in addition, the descent speed of the seabed seismograph in the deep sea 2 m / s, directly hitting the bottom of the sea at this falling speed will have a certain impact on sophisticated seismic monitoring and testing equipment, and some may even cause equipment damage

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