CONTROLLED ELECTROMAGNETIC DYNAMIC RADIATOR OF ELASTIC WAVES OF LOW FREQUENCY IN NON-CONDUCTING MEDIA (EMBODIMENTS) Russian patent published in 2024 - IPC E21B28/00 B06B1/04 G01V1/04 

FIELD: physics.

SUBSTANCE: group of inventions relates to acoustics, namely to controlled electromagnetic dynamic radiators of elastic waves of low frequency in non-conducting media and can be used in oil industry for impact on oil formations, in geophysical equipment of acoustic logging, in design of acoustic borehole flow meters, in flow meters on pipelines transporting various products, in flaw detection. According to the first embodiment, the controlled radiator consists of an axis mounted from two ferromagnetic sections, which are the cores of two solenoids fixed on the radiator housing and located close to each other, as well as the axis of two dampers located between the solenoids and fixing nuts at the ends of the axis. Between the ferromagnetic sections of the axis there is a section from diamagnet made with possibility of separation of sections from ferromagnetic so that they are solenoid cores. According to the second embodiment, the controlled radiator consists of an axis made of a ferromagnetic material, which is the axis of two solenoids fixed on the radiator housing close to each other, as well as the axis of two dampers located between the solenoids and fixing nuts at the ends of the axis. According to the third embodiment, the controlled radiator consists of an axis mounted from the first ferromagnetic section, which is the core of the electromagnet, fixed on the radiator housing, as well as the axis of a damper located between the electromagnet and the first fixing nut. Besides, the axis is mounted from the second section made of diamagnet, which is the axis of the permanent magnet and the damper located between the permanent magnet and the electromagnet, fixed by the second fixing nut.

EFFECT: simplified radiator design.

3 cl, 3 dwg