High-energy pipeline whipping limiting system and method

Abstract

The invention discloses a system and method for slamming a high-energy pipeline. The system includes several groups of slamming limiting devices. Two slinging limiting devices in one group are respectively installed on both sides of the elbow of a high-energy pipeline. The slinging limiting device It includes a bracket assembly, a first pin seat, a first pin shaft, a speed-sensitive hydraulic damper, a second pin shaft, a second pin seat, nuts, bolts, and a plate type arc pipe collar. By installing one or more groups of slam limiting devices on the high-energy pipeline near both sides of the high-energy pipeline elbow, when the high-energy pipeline generates thermal displacement, the velocity-sensitive hydraulic damper follows the high-energy pipeline, and only produces a small impact on the high-energy pipeline. Small resistance; when the high-energy pipeline breaks at the high-energy pipeline elbow, the speed-sensitive hydraulic damper will lock up, forming a rated resistance to the high-energy pipeline, while effectively protecting other key equipment and high-energy pipelines.

Description

technical field [0001] The invention relates to a pipeline slam limiting system and method, in particular to a high-energy pipeline sling limiting device and method, and belongs to the fields of electrical and electromechanical technology and energy security. Background technique [0002] At present, high-energy pipelines are widely used in the fields of nuclear power and chemical industry. For high-energy pipelines, if a pipe break occurs at the elbow joint of the high-energy pipeline, high-pressure steam will be ejected, which will generate a continuous large force on the high-energy pipeline. The high-energy pipeline forms a slam. Due to the continuous injection of high-pressure steam, the slam kinetic energy of the high-energy pipeline will continue to increase. If the high-energy pipeline touches other key equipment during the slam process, it will impact other key equipment with huge energy, causing serious damage. Secondary accidents, in order to prevent high-energy p...

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Problems solved by technology

The commonly used pipeline slam limiting device is a U-shaped (or other shape) metal structure. Considering the thermal displacement of the high-energy pipeline, a certain space must be left between the U-shaped slam limiting device and the high-energy pipeline during installation. It meets the thermal displacement requirements of the high-energy pipeline, but when the high-energy pipeline breaks at the elbow connection of the high-energy pipeline, the thermal displacement space of the high-energy pipeline reserved between the U-shaped slam limit device and the high-energy pipeline becomes a high-energy pipeline. The factors of pipeline acceleration and slamming energy increase. At the same time, when the U-shaped slamming limiting device is geometrically deformed, the U-shaped slinging limiting device has less resistance to the high-energy pipeline, and the slamming energy of the high-energy pipeline will continue to increase. When U When the U-shaped slam limiting device enters into plastic deformation, the U-shaped slam limiting device really begins to absorb and consume the slamming energy of the high-energy pipeline. At this time, the slamming energy of the high-energy pipeline is already very large. In addition, in the world, there is no test equipment that can truly simulate high-energy pipeline slamming and test the U-shaped slamming limiting device.

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