Gas-liquid interface measurement device for salt cavern gas storage

Abstract

The invention discloses a gas-liquid interface measurement device for a salt cavern gas storage, and the device comprises a central pipe, an umbrella buoy and a laser ranging module, wherein the central pipe is vertically inserted into the salt cavern gas storage for discharging the brine; the umbrella buoy is arranged on the central pipe, and is in a natural drooping state when not contacting thebrine liquid level; when contacting the brine liquid level, the umbrella buoy opens naturally and floats on the brine liquid level; and the laser ranging module is mounted on the central pipe and used to emit laser to the umbrella buoy, and receive the laser signal reflected from the umbrella buoy to determine the distance of the laser ranging module from the umbrella buoy by the transmitted andreceived laser signals, so as to determine the depth of the gas-liquid interface. The invention can realize continuous measurement of the depth of the gas-liquid interface in real time.

Description

technical field [0001] The invention relates to the technical field of salt-cavern gas storage, and more particularly, to a gas-liquid interface measuring device for a salt-cavern gas storage. Background technique [0002] The salt cavern gas storage is built by injecting fresh water into the salt mine as a dissolved cavity for gas storage. Dissolution, the brine is discharged from the drainage pipe, and the spacer liquid is injected into the gap between the water injection pipe and the casing to avoid the top dissolution; during the above period, the parameters are constantly adjusted according to the technical parameters such as the brine salinity, and the geometry and volume of the underground cavity are controlled. Finally, a gas storage that meets the design requirements is obtained. During its construction and use, the height of the gas-liquid interface must be controlled and adjusted to control the shape of the roof of the solution chamber. If the control is improper...

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Problems solved by technology

[0008] In view of the defects of the prior art, the purpose of the present invention is to solve the technical problem that the salt cavern gas-liquid interface depth cannot be accurately measured in the salt cavern gas storage during the construction process and after being put into use

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