Steel bell and spigot pipeline limiting joint

A socket and pipe technology, applied in the direction of pipes/pipe joints/fittings, non-removable pipe connections, through components, etc., can solve problems such as reducing installation efficiency

Pending Publication Date: 2020-11-10
BEIJING HANJIANHESHAN PIPELINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of joint is that it is necessary to drill holes and tap the thread on the socket ring. With the increase of the diameter of the pipe, the number of bolt holes will increase. After the pipe joint is installed, the bolts must be installed and tightened in sequence, which reduces the installation efficiency.

Method used

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  • Steel bell and spigot pipeline limiting joint
  • Steel bell and spigot pipeline limiting joint
  • Steel bell and spigot pipeline limiting joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Such as figure 1 Shown, a kind of steel socket pipe restriction joint, comprises socket ring 106, opening snap ring 109, socket ring 108, screw rod 102, hex nut 101, U-shaped nut 104, rubber ring 107.

[0019] figure 2 The snap ring 109 is tightly attached to the groove of the socket ring 106; the socket ring 106 is provided with a rectangular hole 103 and a grouting hole 105; Ring; between the socket ring 106 and the socket ring 108, the compression rubber ring 107 is used to seal the joint.

[0020] image 3 Pass the screw 102 and the U-shaped nut 104 for the split snap ring 109, narrow the split snap ring 109 until the inner diameter of the split snap ring 109 is consistent with the outer diameter of the socket ring 108, and lock it with a hex nut 101; seal the pipe joint with mortar 110 , the flowing mortar flows into the gap between the snap ring 109 and the groove of the socket ring 106 through the grouting hole 105 provided on the socket ring 106 .

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PUM

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Abstract

The invention discloses a steel bell and spigot pipeline limiting joint and an operation method thereof. The pipeline limiting joint comprises a bell mouth ring, an opening clamping ring, a spigot ring, a screw rod, a hexagon nut, a U-shaped nut and a rubber ring. The opening clamping ring is adjusted to be enlarged and shrunk through the screw rod and the U-shaped nut, and is locked through the hexagon nut; Relative displacement between the bell mouth ring and the spigot ring is limited through the shrunk opening ring, and the opening clamping ring is in a shearing force state, so that the joint bears tension. The joint is suitable for large-caliber and small-caliber pipeline limiting joints, stress is uniform and reliable, installation is convenient, and the installation efficiency is improved.

Description

technical field [0001] The present invention relates to a steel socket pipe joint, in particular to a steel socket pipe restrictive joint and its operating method. Background technique [0002] Steel socket joints are widely used in prestressed steel cylinder concrete pipes (referred to as PCCP), steel cylinder concrete pipes and reinforced concrete pipes and other pipelines due to their good sealing performance. The existing steel socket pipe limit joints , usually composed of armored socket ring, socket ring and armored snap ring. Such as Figure 4 As shown in , the pipe restricting joint uses two semicircular armored snap rings to constrain the armored socket ring and the thrust ring set on the socket ring, so that the joint is allowed to bear the tension. The disadvantage of this kind of joint is that when it is used for large-diameter pipe joints, such as those with a diameter above DN2000, the weight of the semicircular armored snap ring has exceeded 60kg, especially ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L13/12
CPCF16L13/124
Inventor 欧阳荣刘江宁
Owner BEIJING HANJIANHESHAN PIPELINE CO LTD
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