Portable air compensation device for high-pressure air impact source

Abstract

The invention discloses a portable air compensation device for a high-pressure air impact source. A high-pressure cavity, a low-pressure cavity and a transmission device of the device are fixedly arranged on a baseplate, wherein the high-pressure cavity communicates with the low-pressure cavity. A hand wheel disc drives a spiral expansion device to rotate through a transmission device. A first vent hole is set on the end face of the low-pressure cavity. A connecting rod extending to a low-pressure piston is fixedly connected with a high-pressure piston. A hollow cavity body is fixedly arrangedon the connecting rod. A second vent hole is set on the side wall of the hollow cavity body. A seal body is arranged in the hollow cavity body. A transmission rod is fixedly connected with the seal body through a hollow connecting rod. The low-pressure piston is fixedly arranged outside the hollow connecting rod. A third vent hole is set on the side wall of the hollow connecting rod. The transmission rod is in threaded connection with the spiral expansion device. A high-pressure air outlet assembly and a low-pressure air inlet assembly are both arranged on the high-pressure cavity. Accordingto the portable air compensation device for the high-pressure air impact source, the device is convenient to carry, and a high-pressure nitrogen energy accumulator can be rapidly inflated and repairedin a field construction environment.

Description

technical field The invention relates to the technical field of seismic exploration, in particular to a portable high-pressure gas shock source gas compensation device. Background technique Among the various geophysical prospecting methods for urban active fault detection, seismic exploration is the most effective method. By artificially stimulating seismic waves and studying the propagation of seismic waves in the strata, the underground geological structure can be ascertained. Since the signal spectrum and basic characteristics generated by high-pressure gas impacting the seismic source can be artificially controlled, certain interference frequencies can be avoided when designing the seismic source excitation signal, and the absorption of the seismic signal by the formation can also be compensated. It is difficult to do it with the explosive source, so the use of high-pressure gas to impact the source for seismic exploration can obtain information with sufficient reflecti...

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Problems solved by technology

The high-pressure nitrogen accumulator of the high-pressure gas shock source is a key component of the high-pressure gas shock source. It is filled with high-pressure gas, but it is prone to air leakage and damage. It has a high frequency of failures in field use, and field construction does not have large-scale automatic repair tools. It is often necessary to transport it to a repair factory for repair. After the high-pressure nitrogen accumulator of the high-pressure gas impacts the seismic source is damaged, it is difficult to repair quickly, which affects the process of seismic exploration.

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