Oil-gas conveying pipe and manufacturing method of same

A manufacturing method and delivery pipe technology, applied in the direction of pipes/pipe joints/fittings, pipes, rigid pipes, etc., can solve the problems of insufficient geometric dimension accuracy at the ends and weak joint strength, so as to eliminate potential safety hazards and improve docking efficiency , Increase the effect of the docking area

Pending Publication Date: 2020-02-11
CNPC BOHAI EQUIP MFG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an oil and gas delivery pipe and a method for making the oil and gas delivery pipe, aiming to solve the technical problems of the existing oil and gas delivery pipes that have weak connection strength and insufficient geometric precision at the ends

Method used

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  • Oil-gas conveying pipe and manufacturing method of same
  • Oil-gas conveying pipe and manufacturing method of same
  • Oil-gas conveying pipe and manufacturing method of same

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Embodiment Construction

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] Please also refer to Figure 1 to Figure 4 , the oil and gas delivery pipe provided by the present invention will now be described. The oil and gas delivery pipe includes a steel pipe 1 and a welding layer 2, the welding layer 2 is fixed at the end of the steel pipe 1, and the welding layer 2 is uniformly arranged on the surface of the steel pipe 1 around the axis of the steel pipe 1.

[0035] The beneficial effect of the oil and gas conveying pipe provided by the present invention is that: compared with the prior art, the oil and gas conveying pipe of the ...

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Abstract

The invention provides an oil-gas conveying pipe and a manufacturing method of the oil-gas conveying pipe, and belongs to the technical field of oil-gas conveying equipment. The oil-gas conveying pipecomprises a steel pipe and a welding layer, the welding layer is fixedly arranged on the end portion of the steel pipe, and the welding layer is uniformly arranged on the surface of the steel pipe around the axis of the steel pipe. The invention further provides a manufacturing method of the oil-gas conveying pipe. Parameters of the welding layer are determined according to the size of the end portion of the steel pipe and the stress bearing capacity required for butt joint welding; welding layers used for increasing the thickness of the end portion of the steel pipe are welded to the inner surface and / or the outer surface of the end portion of the steel pipe in the circumferential direction of the steel pipe according to the parameters; and the welding layers are subjected to fine machining. By means of the oil-gas conveying pipe, the butt joint precision and roundness of the end portion of the steel pipe can be ensured, the butt joint is firm, and potential safety hazards are eliminated.

Description

technical field [0001] The invention belongs to the technical field of oil and gas conveying equipment, and more specifically relates to an oil and gas conveying pipe and a method for manufacturing the oil and gas conveying pipe. Background technique [0002] As an efficient and economical transportation method, pipeline is the main way of long-distance transportation of oil and gas. At present, my country has built more than 120,000 kilometers of oil and gas pipelines such as the West-East Gas Pipeline, the Second / Third / Fourth West-East Gas Pipeline, the China-Russia Crude Oil Pipeline, the Central Asia Pipeline, and the China-Myanmar Pipeline, but they still cannot meet my country's rapid demand for oil and gas. In order to meet the needs of value-added, the construction of oil and gas pipelines is still in the stage of rapid development. [0003] Existing pipelines realize long-distance oil and gas transportation by connecting a large number of single steel pipes through ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/02B23K31/02B23K35/30C22C38/58C22C38/54C22C38/44C22C38/42C22C38/04C22C38/02
CPCB23K31/02B23K35/3073B23K2101/06B23K2103/04C22C38/002C22C38/02C22C38/04C22C38/42C22C38/44C22C38/54C22C38/58F16L9/02
Inventor 陈小伟白学伟王旭张花
Owner CNPC BOHAI EQUIP MFG
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