Transient electromagnetic center loop detection device capable of changing side length and number of turns of transmitting-receiving coil
A technology of transmitting and receiving coils and transient electromagnetics, which is applied in the field of transient electromagnetic center loop detection devices, can solve problems affecting work efficiency and measurement accuracy, cumbersome measurement, and separation of transmitting and receiving coils, so as to improve work efficiency and measurement accuracy High performance, simple operation, and guaranteed stability
Pending Publication Date: 2020-12-18
TAIYUAN UNIV OF TECH
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Problems solved by technology
In physical simulation experiments, most researchers often use enameled wire to wind multiple transceiver coils of different sizes and turns when studying the influence of transceiver coil parameters on transient electromagnetic response characteristics. Due to the fragile characteristics of the coil itself (very thin enameled wire wound system), it is easy to cause poor contact of the circuit, and the current physical simulation experiment often separates the sending and receiving coils, and it is difficult to ensure that the coils are on the same horizontal plane when measuring each point. Greatly affect work efficiency and measurement accuracy
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[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0018] The purpose of the present invention is to provide a transient electromagnetic center loop detection device that can change the side length and number of turns of the transceiver coil, so as to solve the problems in the prior art above, and can meet the requirements of transient detection of gobs under different coil parameters. Variable electromagnetic measurement, to ensure the efficiency of the experiment and the accuracy of data collection.
[0019]...
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Abstract
The invention discloses a transient electromagnetic center loop detection device capable of changing the side length and the number of turns of a transmitting-receiving coil, and the device comprisesa device main body, a transmitting-receiving coil, a transmitting-receiving coil binding post, and a transmitting coil number-of-turns adjustment part. A transmitting-receiving coil binding post connected with the transmitting-receiving coil is installed on a shell of the device body, the number of turns of the coil can be adjusted through the transmitting coil turn number adjusting part, and thefunction is achieved by changing the length of the transmitting coil connected into a circuit. Transient electromagnetic measurement can be carried out on a goaf under different coil parameters, transceiving coils of various sizes are fixed to the same plane, binding posts are arranged, the side length of a transceiving wire frame can be adjusted through the design, the number of turns of transmitting coils can be adjusted, operation is easy and convenient, and the stability of the circuit in the experiment process can be ensured to a great extent, and the working efficiency and the measurement accuracy are improved.
Description
technical field [0001] The invention relates to the technical field of coal mine water-logged goaf detection, in particular to a transient electromagnetic central loop detection device capable of changing the side length and the number of turns of a transceiver coil. Background technique [0002] Due to the continuous mining of coal mines, goafs of different depths and levels have appeared in many coal mines, and most of the goafs still have water accumulation, which has brought hidden dangers to the safe production of coal mines. Because the transient electromagnetic method is sensitive to low resistance, easily penetrates high resistance layers, and has high construction efficiency, it is widely used in the detection of water-logged gobs in coal mines. In order to improve the detection accuracy of the goaf by the transient electromagnetic method, the transient electromagnetic response characteristics of the goaf are often studied and the laws are summarized. The methods us...
Claims
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Login to View More IPC IPC(8): G01V3/08
CPCG01V3/083
Inventor 余传涛薛国强程辉张新军张卓君况昭易
Owner TAIYUAN UNIV OF TECH