Screwed pipe joint and method for the production thereof

A technology for threaded pipes and threaded connectors, applied in the field of threaded pipe joints and their manufacturing, can solve the problems of easy rotation of pipes, damage to anti-corrosion coatings of pipes, expensive deformation of machine tools, etc., and achieve the effect of improving assembly characteristics

Inactive Publication Date: 2012-05-30
VOSS FLUID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Within these ranges, due to pinching, if any, damage to the anti-corrosion coating of the pipes could be detrimental
Furthermore, texturing machines are often expensive as they must be designed to generate extremely high forces (eg: 1000kN for a 42mm pipe diameter)
[0009] In such threaded pipe joints, the main problem is also that, during installation, the pipe tends to rotate together due to the threaded connection (cap gland nut) that needs to be screwed

Method used

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  • Screwed pipe joint and method for the production thereof
  • Screwed pipe joint and method for the production thereof
  • Screwed pipe joint and method for the production thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0049] First, if figure 1 As shown, the threaded pipe joint 1 according to the present invention comprises a plug-in part 2 in the form of a plug-in support and a threaded connection part 4 with a cap seal, which is usually configured as a cap nut, which by means of an inner The thread 6 can be screwed onto the external thread 8 of the plug connector 2 . The pipe 10 to be connected, in particular made of metallic material, has a plug-in end 12 which can project into a receiving opening 14 of the plug-in part 2 . The receiving opening 14 has an inner conical surface 16 which widens outwards in the direction of the pipe 10 . In order to hold the pipe 10 in a tight manner, the pipe wall region of the plug end 12 of the pipe 10 can be clamped between the plug part 2 and the screw connection part 4 in a form-fit and / or force-fit manner.

[0050] The pipe 10 has a nominal inner diameter NDI and a nominal outer diameter NDA. These fixed dimensions of the pipe determine its nominal...

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PUM

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Abstract

The invention relates to a screwed pipe connection (1) for connecting a pipeline (10) comprising a connection end (12) having a formed wall region. The screwed pipe connection comprises a connection part (2) and a union joint part (4). Proceeding from the end face (18) of the connection end (12), an outside cross-section of the pipeline (10) increases and is larger than the nominal outside cross-section, then decreases again. Proceeding from the end face (18), a clear inside cross-section of the connection end (12) is larger than the nominal inside cross-section and decreases to the nominal inside cross-section, wherein the wall thickness on the end face (18) is smaller than the nominal wall thickness, and wherein an inner material difference (MI), resulting from the deviation of the inside cross-section from the nominal inside cross-section, and an outer material difference (MA), resulting from the deviation of the outside cross-section from the nominal outside cross-section, deviate from one another by a maximum of 30 percent.

Description

technical field [0001] The invention relates to a threaded pipe connection for connecting pipes having a nominal (nominell) outer cross section, a nominal inner cross section, a nominal pipe wall thickness and a socket end with a pipe wall region configured by deformation, The threaded pipe connection comprises a plug-in piece and a threaded connection piece with a cap seal for holding the pipe in a sealed manner and can be screwed together with the plug-in piece, wherein the plug-in piece has a receiving opening, The receiving opening has an inner conical surface that expands outwards in the direction of the pipe, wherein the deformed pipe wall region of the plug-in end of the pipe can be clamped in a form-fitting and / or force-fitting manner between the plug-in part and the threaded connection between, and wherein at the spigot end and at the end of the first length extending axially from the end face towards the connector, the outer cross-section of the duct formed by the ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L19/02F16L19/028F16L19/04F16L19/10B21D41/02
CPCF16L19/106B21K21/12F16L19/0212F16L19/0286B21D39/04F16L19/046F16L19/0283F16L19/10B21K25/00Y10T29/4992Y10T29/49906Y10T29/4994Y10T29/49918Y10T29/49863Y10T29/49428Y10T29/53987Y10T29/49911F16L19/04F16L19/028B21D41/02
Inventor G·贝格豪斯哈拉德·颇特
Owner VOSS FLUID
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