Separable type deepwater seabed pipeline bending test system

A subsea pipeline and buckling test technology, which is applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problems of limited test length and small effective research area of ​​pipeline specimens, and achieves easy procurement and customization, easy implementation, and high safety performance effect

Inactive Publication Date: 2011-09-07
TIANJIN UNIV
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Problems solved by technology

The joints of the pipe fittings protruding from the cabin are sealed with movable rubber devices. Due to the use of rubber seals, the water pressure in the middle section of the cabin cannot be added to the deep sea hydrostatic pressure value, generally the maximum is 1Mpa, and the test length

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  • Separable type deepwater seabed pipeline bending test system
  • Separable type deepwater seabed pipeline bending test system
  • Separable type deepwater seabed pipeline bending test system

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Embodiment Construction

[0045] The separable deep-sea pipeline buckling test device of the present invention includes two parts: a pressure chamber and a pipeline bending and internal pressure loading device which can be separated into independent systems.

[0046] 1. The pressure chamber can simulate the deep-sea high-pressure environment, with water as the internal pressure medium. The pressure chamber includes the front cover of the pressure chamber, the tail end cover, the main body of the pressure chamber, the pressurization and pressure relief port, and the opening of the test line. The front end cover of the pressure chamber is connected and sealed with the main cabin by large bolts, and the rear end cover is connected to the rear of the cabin by 16 smaller bolts. Both the front and rear end caps are waterproof and sealed with aluminum sealing rings that are tightly hooped inside the end caps. The test data of the pipe fittings in the cabin is transmitted to the data acquisition and processing...

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Abstract

The invention belongs to the technical field of deep sea oil development, exploitation and transportation and relates to a separable type deepwater seabed pipeline bending test system which comprises a pressure chamber, a pipeline bending loading device, a hydraulic loading mechanism and a pipeline auxiliary device, wherein the pressure chamber comprises a main chamber body and front and tail end covers connected to two ends of the main chamber body; sealing rings are arranged inside the front and tail end covers; a guide rail is arranged on the upper surface of the bottom of the pressure chamber; the pipeline bending loading device which is composed of a bracket and a pulley is arranged on the guide rail; two end parts above the bracket are provided with a pair of U-shaped clamp slots with slotted plates; two pairs of detachable cover plates with slotted plates and bolts are arranged above the two U-shaped clamp slots; and a pair of hydraulic loading mechanisms are arranged at the inner side above the bracket. The system can be used for simultaneously loading an external static water pressure, a bending pressure and a test-piece inner pressure on a real proportional test-piece and can be used for simulating the actual flow condition of conveying different media at different temperatures by using the seabed pipeline in the actual engineering.

Description

technical field [0001] The invention belongs to the technical field of deep sea oil development and transportation, and relates to a buckling test device for a submarine pipeline. Background technique [0002] The environmental conditions of submarine pipelines, especially deep-sea submarine pipelines, are extremely complex. During the working process, they are subjected to various loads, such as the seawater pressure acting on the outer wall of the pipeline. Especially for deep-sea pipelines, the water pressure increases with water depth. Increasing the water depth of 1,000 meters can increase the external pressure of the pipeline to ten MPa; wave fluctuations or current surges, rough seabed terrain, and pipe laying operations will cause the pipeline to bend. Since the submarine pipeline generally transports heated oil, the temperature difference between the inside and outside The thermal expansion force formed also has a great influence on the pipeline. The deep-sea pipeli...

Claims

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Application Information

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IPC IPC(8): G01N3/00
Inventor 余建星卞雪航余杨付明炀王永更林镇诗王保建马骏景海波
Owner TIANJIN UNIV
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