Fluid pipeline leakage stopping device and method

Abstract

The invention relates to a fluid pipeline leakage stopping device and method. The device is mainly composed of an upper groove shape splint and a lower groove shape splint which are symmetric in shape. The groove shape splint has certain width, thickness and length, the inner side is provided with a groove with consistent curvature with pipeline, the two sides are provided with a bolt, the inner side of the groove shape splint is provided with a soft metal layer in certain thickness, and the outer edge of the inner side of the upper and lower splints is provided with a boss and a groove which are matched. The method of the invention includes the following steps: a, sleeving, the groove shape splint is sheathed on the pipeline at one side of leakage point, the bolt is locked, so that certain gap is kept between the pipeline and the groove shape splint; b, positioning, the groove shape splint is shifted and rotated to the leakage point until the groove shape splint completely covers the leakage point; c, locking, the bolt is locked, so that the groove shape splint safely clamps the pipeline. The invention can realize fast permanent leakage stopping of high pressure fluid pipeline or pipeline with large leakage area and can be widely applied to repairing of sea bottom leakage oil pipe and gas pipe.

Description

technical field [0001] The invention belongs to the technical field of pipeline leakage repair, and in particular relates to a device for plugging up a high-pressure fluid pipeline and a method for quickly plugging up a leak with the device. Background technique [0002] Existing methods for dealing with fluid pipeline leakage mainly include: replacing the pipeline; using glue-like substances to smear repairs; Plugging of pipelines conveying high-pressure fluids and underwater. [0003] On August 21, 1991, the Chinese Patent Office disclosed a utility model patent named "Pipeline Leakage Plugging Fixture" with the announcement number "CN 2083236U". The metal sealing layer, two splints and bolts of a certain length" realize rapid plugging of chemical, sugar, power generation and other process pipelines with certain pressure and temperature. This utility model is suitable for low pressure, small pipe diameter and small leakage area. There are limitations such as temporary pl...

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Problems solved by technology

[0002] Existing methods for dealing with fluid pipeline leakage mainly include: replacing the pipeline; using glue-like substances to smear repairs; Leakage plugging of pipelines conveying high-pressure fluids and underwater

[0003] On August 21, 1991, the Chinese Patent Office disclosed a utility model patent named "Pipeline Leakage Plugging Fixture" with the announcement number "CN 2083236U". The metal sealing layer, two splints and bolts of a certain length" realize rapid plugging of chemical, sugar, power generation and other process pipelines with certain pressure and temperature. This utility model is suitable for low pressure, small pipe diameter and small leakage area. The pipeline can achieve temporary plugging, but it is impossible to plug the high-pressure fluid pipeline or the pipeline with a large leakage area, and the plugging tolerance time is relatively short.

" and other steps, this method can realize rapid and permanent plugging of pipelines under pressure, but when the pipeline pressure is high or the leakage area is large, such as submarine high-pressure oil pipelines, gas pipelines, etc., people or machines cannot approach the leakage point at all, and cannot " Use clamps to clamp the entire leaking pipe section", that is, the above method still cannot achieve the plugging of the high-pressure liquid pipeline, and at the same time, the method and device have the limitations of complex structure and high cost of plugging

[0005] On April 20, 2010, a pipeline oil spill occurred in the Gulf of Mexico due to a fire and explosion of an oil drilling platform. The oil spill has lasted for 60 days and still cannot be effectively controlled. The incident resulted in a 200-kilometer-long and 100-kilometer-wide offshore crude oil floating belt , and it is spreading further, seriously polluting the Gulf of Mexico

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