Pipeline laying structure applied to high-speed geotechnological centrifugal machine

Abstract

The invention discloses a pipeline laying structure applied to a high-speed geotechnological centrifugal machine. According to the structure, pipelines and cables are integrally cured and molded in the pipeline laying structure to reduce protruding matters on the outer surface of a rotary arm of the geotechnological centrifugal machine, so that the whole centrifugal machine has a better aerodynamic shape to help to reduce wind resistance, heat generated by friction and energy consumption; the rotary arm of the centrifugal machine is tightly sleeved with the pipeline laying structure, the direct pressing force of the pipelines, the cables and the rotary arm is replaced with a sleeve pressing force of the pipeline laying structure and the rotary arm, the pressing force is larger, the connection is more stable, and damage on the pipelines and the cables is not caused; the installation and dismantling of the pipeline laying structure is simple, a large number of screw holes do not need tobe reserved in the rotary arm of the geotechnological centrifugal machine, so that stress concentration on a local region on the rotary arm is not caused, and therefore the using safety of the rotaryarm can be effectively protected.

Description

technical field [0001] The invention belongs to the technical field of centrifuges, and in particular relates to a pipeline laying structure applied to high-speed geotechnical centrifuges. Background technique [0002] Geotechnical centrifuge is an experimental device used in geotechnical engineering and other fields. It can simulate the supergravity field by using the stable centrifugal acceleration field formed by high-speed rotation. According to the similarity ratio principle of the model, researchers can conduct experimental research on real-world 100-meter-high dams and giant landslides on geotechnical centrifuges to evaluate their safety and grasp the mechanism of landslides. In addition, geotechnical centrifuges are also widely used in deep sea engineering, underground environmental pollutant assessment, earthquake resistance assessment of urban building structures, high-energy explosion research and other fields. The field provides strong support. [0003] High-sp...

AI Technical Summary

Problems solved by technology

However, the arrangement of existing pipes and cables makes them protrude from the upper surface of the rotating arm, which destroys the good aerodynamic shape of the rotating arm and increases the wind resistance of the centrifuge operation

[0009] 2. Weak protection ability

Therefore, it often happens that the internal battery core of the cable is broken by the crimping clamp during installation.

[0011] Secondly, because the cable is wrapped with elastic materials such as rubber skin, the cable between the crimping clamps will shake back and forth under the action of centrifugal force and wind resistance, so that the internal battery core of the cable will break after a period of use (for electric especially for signal cables with thin cores)

[0012] In addition, when the acceleration of the centrifuge reaches 1000g, the traditional pipeline installation structure will not be able to provide enough friction to balance the centrifugal force on the pipeline, otherwise it will cause too much compression force to cause cable breakage and pipeline rupture

[0013] 3. Affect the structural strength of the boom

[0015] However, for high-speed geotechnical centrifuges, under the centrifugal acceleration of 1000g, the force on the arm deteriorates sharply, and the maximum internal stress is close to the allowable stress of the material

Processing the screw holes for installing pipelines on the rotating arm will cause the stress value at the opening position to increase significantly and exceed the allowable stress of the material, making the rotating arm very prone to structural damage at the screw hole under high centrifugal field, seriously affecting the high-speed Safe Operation of Geotechnical Centrifuge

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