Petroleum pipeline with taper structures

A technology of petroleum pipelines and cones, which is applied in the field of petroleum pipelines with cone structures, and can solve the problems of poor durability of sealing measures and complex sealing structures, etc.

Inactive Publication Date: 2013-09-11
WUXI JINDING OIL PIPE FITTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problem of the complex sealing structure of the pipe end structure of the petroleum pipeline, and ...

Method used

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  • Petroleum pipeline with taper structures
  • Petroleum pipeline with taper structures

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Embodiment Construction

[0013] Such as Figure 1-2 As shown, a petroleum pipeline with a tapered mouth structure described in the embodiment of the present invention includes a body 1 with a circular tubular structure. Internal threads 2 are provided at both ends of the body 1, and cones are provided on the outside of the internal thread 2. mouth structure 3, the taper of the cone mouth structure 3 is greater than 1 / 5, the minimum inner diameter of the cone mouth structure 3 is equal to the diameter of the screw tooth base of the internal thread 2, and the inner surface of the cone mouth structure 3 is a smooth surface , making it easy to contact and seal with the gel seal structure.

[0014] The internal thread 2 is a rectangular structural thread.

[0015] An arc-shaped annular protrusion 4 is provided in the middle of the cone structure 3, and the minimum inner diameter of the annular protrusion 4 is smaller than the diameter of the screw tooth base of the internal thread 2 to prevent it from int...

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Abstract

The invention discloses a petroleum pipeline with taper structures. The petroleum pipeline comprises a pipeline body in a tubular shape. Two ends of the pipeline body are provided with inner threads, and taper structures are arranged on the outer sides of the inner threads. The taper of the taper structures is larger than one fifth, and the smallest inner diameter of the taper structures are equal to the diameter of the thread tooth base of the inner threads. The inner faces of the taper structures are smooth so as to facilitate contact and sealing between the taper structures and rubber sealing structures. Circular projects in arc shapes are formed in the middle of the taper structures, and the smallest inner diameter of the circular projects is small than the diameter of the thread tooth base of the inner threads so that matching between the inner threads and a connector provided with a threaded structure can be prevented from being affected. According to the petroleum pipeline with the taper structures, the taper structures hermetically contact with the seal ring of the corresponding connector, and the seal ring is further pressed tightly through the circular projects, and better contact and sealing effect is achieved.

Description

technical field [0001] The invention relates to a cone structure oil pipeline, which belongs to the technical field of oil pipelines. Background technique [0002] The sealing problem after the oil pipeline is docked is a very important problem. In the prior art, sealing measures such as sealing rings, sealing rings, and expansion structures are often used for sealing. The structure is relatively complicated, and the sealing performance decreases with the passage of time. . The applicant applied for an expansion ring-type pipe end connector on the same day, so it is necessary to design an oil pipeline with a simple structure and good sealing performance with a taper structure that cooperates with the expansion ring type pipe end connector. Contents of the invention [0003] In order to solve the technical problem of the complex sealing structure of the pipe end structure of the petroleum pipeline and at the same time solve the problem of poor durability of the sealing mea...

Claims

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Application Information

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IPC IPC(8): F16L15/04
Inventor 沈金章
Owner WUXI JINDING OIL PIPE FITTINGS
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