A low-noise triaxial radio frequency multifunctional tensile cable

Abstract

The invention discloses a low-noise tri-axial radio frequency multifunctional tensile cable, which consists of a central layer, a braided layer, a middle coating layer, a master shielding layer and an outer coating layer, wherein the central layer comprises a plurality of low-noise radio frequency cables and a plurality of power cords, and fiberglass filler ropes are arranged among the low-noise radio frequency cables and the power cords, and is lapped by a polyester belt; the aramid fiber braided layer, the flame-retardant polyvinyl chloride middle coating layer, the alloy wire master shielding layer and the buna-n rubber outer coating layer are further arranged outside the polyester belt. According to the low-noise tri-axial radio frequency multifunctional tensile cable, the shortcoming that a conventional cable cannot be adapted to frequent changes in an ambient environment and temperature due to the actions of bending, vibration, impact, squeezing and the like in a working process, and has problems which are urgent to be solved particularly when being involved in the execution of a certain special engineering task, causing a certain difficulty in the measurement of a tiny signal, noise produced in the cable and influence on the accuracy of a measurement value, is overcome; the low-noise tri-axial radio frequency multifunctional tensile cable is suitable for various measurement instruments, and is particularly suitable for a measurement instrument required to measure the tiny signal when executing the special engineering task.

Description

technical field [0001] The invention relates to a low-noise three-axis radio frequency multifunctional tensile cable. Background technique [0002] When the braided coaxial cable insulated by cross-linked polyethylene or fluorine-containing resin with large resistance is used under the conditions of bending or mechanical vibration and frequent changes in environment and temperature, it may be caused by bending, vibration, impact, extrusion or temperature changes around the cable. The internal noise generated by factors such as thermal expansion and contraction will bring errors to the measurement, especially when it comes to performing a special engineering task, because the input and output terminals of the measuring instrument for measuring tiny signals are all high-impedance circuits, the machine The coaxial cables used for inter-connection and machine wiring require high insulation resistance; however, the static charge discharge of this coaxial cable is amplified by the...

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Problems solved by technology

[0002] When the braided coaxial cable insulated by cross-linked polyethylene or fluorine-containing resin with large resistance is used under the conditions of bending or mechanical vibration and frequent changes in environment and temperature, it may be caused by bending, vibration, impact, extrusion or temperature changes around the cable. The internal noise generated by factors such as thermal expansion and contraction will bring errors to the measurement, especially when it comes to performing a special engineering task, because the input and output terminals of the measuring instrument for measuring tiny signals are all high-impedance circuits, the machine The coaxial cables used for inter-connection and machine wiring require high insulation resistance; however, the static charge discharge of this coaxial cable is amplified by the amplifier of the machine, and even covers low-frequency signals, becoming a bad noise source; Noise becomes an error factor in instruments that measure minute signals, making accurate measurements impossible

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