A kind of pipeline water injection valve and the seabed transportation pipeline using it

A technology for conveying pipelines and water injection valves, applied in the direction of pipes/pipe joints/fittings, lifting valves, pipe components, etc., which can solve the problems of increased pipe weight, increased production costs, waste of fluid water resources, etc., and achieve production cost reduction , avoid interference, convenient transportation and installation

Active Publication Date: 2022-04-05
SHANDONG ZHONGLI HIGH PRESSURE VALVE CO LTD
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Problems solved by technology

[0003] Conventional deep-sea pipelines are filled with liquid in advance before the inner and outer pipes, and then the pipeline is transported to the sea as a whole for laying and installation. However, in this way, fluid is generally injected into the annular space between the inner and outer pipes to generate Static pressure, which needs to consume a large amount of fluid to cause waste of water resources, and secondly, the overall weight of the pipeline will increase a lot after the liquid is poured. cost

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  • A kind of pipeline water injection valve and the seabed transportation pipeline using it
  • A kind of pipeline water injection valve and the seabed transportation pipeline using it
  • A kind of pipeline water injection valve and the seabed transportation pipeline using it

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[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] The implementation method of the present invention is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0024] Referring to the accompanying drawings, the structures, proportions, sizes, etc. shown in the accompanying drawings of this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the scope of the present invention. Therefore, it has no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of The technical content disclosed in the present invention mus...

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Abstract

The object of the present invention is to provide a pipeline water injection valve and a seabed conveying pipeline using it, which is directly filled with seawater during the installation process of sinking into the seabed, which reduces the total weight in the process of transportation and hoisting, and at the same time reduces the The process and cost increase caused by direct filling of liquid in the production process; including the outer tube and the inner tube, the anti-bending structures are arranged at intervals along the length direction of the inner and outer tubes, and a plurality of installation holes are opened on the outer tube, and the installation holes A pipeline water injection valve is fixed inside, and the pipeline water injection valve is used to inject liquid into the annular space between the inner pipe and the outer pipe, and controls the pipeline water injection valve to stop water injection when the external environmental pressure is greater than the design pressure, and closes the outer pipe water inlet.

Description

technical field [0001] The invention belongs to the technical field of petrochemical transportation equipment and deep water equipment, and in particular relates to a pipeline water injection valve and a submarine transportation pipeline using the same. Background technique [0002] Before the laying of the deep-sea oil pipeline is completed, there is no oil and gas pressure in the pipeline. Therefore, the general deep-sea pipeline is composed of an inner pipe and an outer pipe. The inner pipe plays the role of transporting oil and gas, and the outer pipe is used to protect the inner pipe. Before the completion, the hydrostatic pressure of the external seawater was too high, which caused the buckling and failure of the pipeline, resulting in significant economic losses. [0003] Conventional deep-sea pipelines are filled with liquid in advance before the inner and outer pipes, and then the pipeline is transported to the sea as a whole for laying and installation. However, in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/07F16K17/04F16K1/38F16K1/32
CPCF16L55/07F16K17/04F16K1/38F16K1/32
Inventor 杨新超
Owner SHANDONG ZHONGLI HIGH PRESSURE VALVE CO LTD
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