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Changeable flange joint

A technology of variable flanges and threaded pipes, applied in the direction of flange connections, pipes/pipe joints/fittings, passing components, etc., can solve problems such as waste, difficulty in ensuring cleanliness, and inability to reuse materials, etc., to achieve reliable connections, The effect of convenient on-site installation

Inactive Publication Date: 2014-07-30
NO 6 CONSTR CO OF CHINA PETROLEUM & NATURAL GAS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the present invention designs a variable flange joint to solve the problem of difficulty in ensuring the cleanliness of temporary flange short pipe joints made on site in traditional connection methods, poor sealing performance of temporary joints during high temperature oil flushing, and inability to be reused The waste of materials and other problems caused by

Method used

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  • Changeable flange joint

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Embodiment Construction

[0014] The technical solutions of the present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0015] The variable flange joint of the present invention is mainly composed of a large flange 1, a small flange 4, a double-ended threaded pipe joint 3, a large-diameter threaded pipe 5, a small-diameter threaded pipe 6 and a sealing ring 2.

[0016] The large-diameter threaded pipe 5 is coaxially arranged at the bottom of the large flange 1 (non-sealing surface) and forms a whole with it (constituting a non-standard part), and the small-diameter threaded pipe 6 is coaxially arranged at the bottom of the small flange 4 end (non-sealing surface) and form a whole with it (constituting a non-standard part), the large-diameter threaded pipe 5 and the small-diameter threaded pipe 6 both adopt internal pipe threads; the two ends of the double-ended threaded pipe joint 3 are respectively large The threaded end and the small...

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Abstract

The invention discloses a changeable flange joint. The changeable flange joint comprises a large flange plate and a small flange plate with different diameters and a dual-head threaded pipe joint connected with the large flange plate and the small flange plate; the diameters of threads at two ends of the dual-head threaded pipe joint are different; a large diameter threaded pipe capable of being screwed with the large diameter threaded end of the dual-head threaded pipe joint is coaxially arranged at the bottom end of the large flange plate; a small diameter threaded pipe capable of being screwed with the small diameter threaded end of the dual-head threaded pipe joint is coaxially arranged at the bottom end of the small flange plate; sealing slots are formed between two ends of the dual-head threaded pipe joint and the bottom ends of the large flange plate and the small flange plate; seal rings are arranged in the sealing slots. Two pipelines of different standards can be connected, and the connection need of the pipelines of multiple different specifications can be met by replacing different flange plates.

Description

(1) Technical field: [0001] The invention relates to a pipe connector, in particular to a variable flange joint capable of connecting two pipes with different specifications. (two) background technology: [0002] In a petrochemical plant, the compressor is the core equipment in the plant, usually called the heart of the plant. The quality of its installation is directly related to the long-term normal operation of the plant. During the installation process of the compressor unit, the flushing of the oil system is a key process, and how to realize the quick connection of the temporary flushing pipeline in this critical step is an important task. [0003] The traditional connection method is to use flange and short pipe welding to make temporary flange joints, which are discarded after a project is used up, resulting in waste. Due to the temporary use of the flange short pipe, its quality and cleanliness are relatively difficult to meet the flushing requirements of the lubric...

Claims

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Application Information

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IPC IPC(8): F16L23/024F16L23/032
CPCF16L23/024F16L23/032F16L23/18
Inventor 姜平钟耿程复刚
Owner NO 6 CONSTR CO OF CHINA PETROLEUM & NATURAL GAS CORP
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