Easy-to-operate mechanical property testing device for flexible pipe cable in deep sea environment

Abstract

The invention discloses an easy-to-operate testing device for simulating the mechanical property of a flexible pipe cable in a deep sea high-pressure environment, and the device comprises a deep waterpressure tank, an installation frame, and a flexible pipe cable mechanical property testing device. The testing device is fixedly connected to the installation frame, and the installation frame is fixedly connected to the interior of the deep water pressure tank. The deepwater pressure tank cover is connected with the planetary gear train mechanism through the hand wheel, the planetary gear trainmechanism is connected with the connecting rod sliding block mechanism, and the sliding block and the tank body are sealed in a wedging mode. According to the testing device, the two hydraulic motorsare connected with the corresponding stress sensors to independently apply tension, compression or torsion stress to the to-be-tested flexible pipe cable, independent stretching, torsion and other tests on the marine flexible pipe cable can be achieved, and combined tests under various test working conditions can also be conducted. For example, a tension-torsion test, a compression-torsion test and a tension-compression fatigue test can be carried out. The radius of the clamping device of the device can be adjusted, and flexible pipe cables with different pipe diameters can be tested.

Description

technical field [0001] The invention relates to the technical field of structural body deformation testing for flexible umbilical cable specimens to achieve stretching, compression, torsion and combination behaviors, in particular to an easy-to-operate testing device for simulating the mechanical properties of flexible umbilical cables in deep-sea high-pressure environments Background technique [0002] my country's offshore oil and gas reserves are abundant, and most of them are distributed in deep waters such as the South China Sea. Submarine cables, umbilical cables, and flexible pipelines are one of the indispensable equipment in deep-sea oil and gas exploitation, and such equipment can be collectively referred to as marine flexible umbilical cables. Submarine cables are mainly used to transmit electrical energy for underwater equipment; umbilical cables are mainly used for remote control equipment; flexible pipe cables are mainly responsible for oil and gas transportati...

AI Technical Summary

Problems solved by technology

However, in the structural test that simulates the deep sea environment, it is inevitable to open the flat cover when changing the test piece in the container, which destroys the sealing state of the container.

Moreover, most of the pressure vessel sealing covers currently used in industry are sealed by multiple bolts pre-tightening gaskets, and the pre-tightening force is usually relatively large.

In addition, frequent opening and closing of the flat cover takes a lot of time and manpower, and is a great challenge to the tightness of the pressure vessel

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