Threaded joint with energizable seal

一种螺纹接头、密封接触的技术，应用在螺纹连接、用流体压力进行填料密封的连接、发动机的密封等方向，能够解决操作困难、密封环破坏、密封环扭曲等问题，达到运输容易、和组装容易、组装操作容易的效果

Inactive Publication Date: 2010-05-26
TENARIS CONNECTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The widely used practice is to use O-rings pre-installed on the casing joints, but this has two disadvantages: the sealing ring can be damaged during the installation process of the ring and / or during the assembly process, and the simple cross-section O-rings cannot provide much sealing function
Also, seal rings tend to twist during assembly, making handling more difficult

Method used

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  • Threaded joint with energizable seal
  • Threaded joint with energizable seal
  • Threaded joint with energizable seal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Referring specifically to the drawings, there is shown a threaded joint, generally designated by reference numeral 1, connecting two pipes, an externally threaded pipe or pin 3 having an external nominal diameter D, and an internally threaded pipe or sleeve having an external diameter D1 Tube 2.

[0025] The pin 3 has a threaded portion 5 with an external thread of a suitable profile (eg trapezoidal) and the bushing 2 has an internal threaded portion 4 with an internal thread. The common axis of the tubes (pin and bushing) is indicated by A.

[0026] The portion of the sleeve 2 close to its front end 6 includes a non-threaded surface 7 . Advantageously, but not necessarily, a housing in the shape of an annular groove 10 is formed on the inner surface of the sleeve 2 comprised between the end of the thread 4 and the front end 6 . The housing encloses the sealing ring 11 . exist figure 1 In the embodiment shown, the casing 10 formed on the inner surface of the sleeve ...

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PUM

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Abstract

A threaded joint has a sealing ring (11) interposed between the pin (3) and a box (2), positioned in a portion of the surface of the pin after the end of the threaded section of the pin. The sealing ring has two protruding annular lips (15, 16) positioned at a skewed angle to the longitudinal axis, two or more annular ribs (18) on the external cylindrical surface, a reinforcement ring (14) embedded in the sealing ring (11), in tight sealing contact with an internal surface of an annular groove (10) of the box by means of the annular ribs (18). The internal surface (19) of the sealing ring (11) can be made without abrupt variations and can have a uniform diameter or have protruding annular ribs (13).

Description

technical field [0001] The present invention relates to threaded joints, especially for joining predetermined lengths of pipes to form pipe strings employed in the hydrocarbon industry, especially for the OCTG (Oil Industry Tubing) field, and pipes in offshore applications. Background technique [0002] In recent years, prospecting for oil, or more often hydrocarbons, has become more demanding of hardware and equipment as oil and gas fields or reservoirs are located in deeper or difficult-to-explore locations and beneath the seabed. Exploration and production of hydrocarbon fields required hardware that is more resistant to environmental challenges such as greater loads and corrosion, which was less important in the past. [0003] Modern fittings are generally designed to have a metal-to-metal seal formed by contact between two surfaces that interfere, usually at one or both ends of the threaded portion of the fitting and within the elastic range of the modulus of elasticity...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F16L15/04
CPCF16L15/003E21B17/042F16J15/0887F16J15/025F16L17/025F16J15/121F16L17/02F16L17/035F16J15/127F16L15/008E21B2200/01
Inventor内斯托尔·J·桑蒂加斯东·马扎费罗阿尔弗雷多·基罗加
OwnerTENARIS CONNECTIONS