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Flange joint

A technology of flanges and connecting components, applied in the direction of pipes/pipe joints/fittings, flange connections, passing elements, etc., which can solve the problem of high notch sensitivity, unfavorable fatigue strength of components to be connected, high shear force of locking rings, etc. question

Inactive Publication Date: 2007-05-02
GS HYDRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One problem with the known flange joints that allow the clamping flange to perform a rotational movement is that, in order to secure the locking ring in the groove, the locking groove in the members to be connected is formed relatively deep, and as a result of this design result in a relatively high notch sensitivity of the components to be joined that is detrimental to fatigue strength
Furthermore, during the fastening of the clamping flanges at the opposite ends of the members to be connected, the locking ring is subjected to high shear forces, whereby, in practice, the joint must be loosened and refitted. In the case of such a locking ring cannot be reused

Method used

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Embodiment Construction

[0012] The prior art flanged joint in Figure 1 (described in more detail in US Pat. superior. A clamping flange 2 is arranged around the pipe 1 and a second clamping flange 9 is arranged around the joint 7 . Flanges 2 and 9 are fastened together by suitable means such as nut / bolt combinations 10,11. At least one of the clamping flanges 2 and 9 (flange 2 in FIG. Complementary grooves 5 are formed. When these grooves are arranged opposite each other, these grooves form a substantially closed space, which is provided with the locking ring 3 . The locking ring 3 extends radially from the groove 4 to the complementary groove 5 of the flange 2 . The locking ring 3 is preferably a metal material, but can also be made of other suitable materials. The clamping flange 9 surrounding the welded joint 7 may be of any suitable type, for example of the type firmly welded to the welded joint 7 . Reference numeral 6 denotes packing installed between ends of members to be connected.

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Abstract

This invention relates to a flange joint, which comprises the following: a pair of tube part to be connected; clamp flange fixed on each tube part; fixing device matched with clamp flange. Through matching with locking ring, the at least one of clamp flanges can be fixed on the tube by rotation means and the locking ring operates with the locking groove and the matched groove formed in the clamp flange. The tube part has the locking groove with relative shallow shape and the clamp flange has matched groove. The locking ring is located with supportive parts of enlarging part of the clamp flange to be supported on the surface of the tube part. íí

Description

technical field [0001] The present invention relates to a flange joint comprising a pair of tubular members to be joined, a clamping flange mounted on each member to be joined, fixing means cooperating with the clamping flanges to join said members together, At least one of the clamping flanges is rotatably mounted on the corresponding member to be connected by being assembled with a locking ring that is compatible with a locking groove formed on the member to be connected and formed on the member to be connected. Complementary grooves on the clamping flange fit. Such a flange joint is particularly suitable for connecting pipes, whereby each component to be connected is provided with a clamping flange. Background technique [0002] The clamping flanges generally used in the prior art are fixedly mounted, for example by welding, at the ends of the pipes to be connected. The resulting material costs are very high, and since the flanges cannot be rotated, it is difficult for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L23/024
Inventor 瑞斯图·埃里克森
Owner GS HYDRO CORP