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Internal-pressure self-sealing rotary tube joint

A rotary pipe joint and self-sealing technology, applied in the field of pipe joints, can solve the problems of annular friction, high manufacturing cost, complex structure, etc., and achieve the effect of eliminating friction, reducing manufacturing cost and good sealing effect.

Active Publication Date: 2012-01-11
宋章根
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the existing rotary compensator complex structure, the existence of toroidal friction when rotating, and the problems of high manufacturing cost, and to design a structure that is simple, easy to manufacture and install, has no toroidal friction, and has a small number of parts The internal pressure self-sealing rotary pipe joint can be used to replace the existing rotary compensator to realize the automatic compensation of the length of the pipeline

Method used

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  • Internal-pressure self-sealing rotary tube joint
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  • Internal-pressure self-sealing rotary tube joint

Examples

Experimental program
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Effect test

Embodiment 1

[0022] like figure 1 , 2 shown.

[0023] An internal pressure self-sealing rotary pipe joint, mainly composed of three parts: an inner pipe 1, an outer pipe 2 and a front seal 3, wherein the inner pipe 1 includes a straight pipe section 101 and a platform stage 102, and the two ends of the platform stage 102 are respectively A large end face 103 and a small end face 104 perpendicular to the axis line are provided, and the outer surface of the platform stage 102 is provided with a conical surface section 105, which can also be set to a structure of a conical surface section plus a cylindrical surface section during specific implementation; the outer tube 2 It is composed of an outer straight pipe section 201, a tapered pipe section 202 and an end cover section 203. The tapered pipe section 202 is located between the outer straight pipe section 201 and the end cover section 203. The tapered pipe section 202 and the outer straight pipe section 201 can be integrally connected. I...

Embodiment 2

[0026] like image 3 , 4 shown.

[0027] An internal pressure self-sealing rotary pipe joint, comprising an inner pipe 1 and an outer pipe 2, the outer pipe 2 is formed by connecting a straight pipe section 201 and a convex pipe section 204, and one end of the inner pipe 1 is inserted into the convex pipe section 204 One end of the inner tube 1 inserted into the convex tube section 204 is provided with an annular boss 105, the outer diameter of the annular boss 105 matches the inner diameter of the convex tube section 204, and on one end of the inner tube 1 inserted into the convex tube section 204, Both sides of the annular boss 105 are respectively equipped with a front seal 3 and a rear seal 5, the rear seal 5 is close to the side of the straight pipe section 201 of the outer tube 2, and the front seal 3 and the The rear seals 5 are all wrapped in the convex tube section 204 . A sealing ring or a ball 4 may also be installed between the annular surface of the convex pipe...

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Abstract

The invention relates to an internal-pressure self-sealing rotary tube joint which comprises an inner tube (1) and an outer tube (2), and is characterized in that the outer tube (2) is formed by connecting a straight tube section (201) and a convex tube section (204); one end of the inner tube (1) is inserted into the convex tube section (204) and is provided with a ring-shaped boss (105); the external diameter of the ring-shaped boss (105) is matched with the internal diameter of the convex tube section (204); the end of the inner tube (1) inserted into the convex tube section (204) and the two ends of the ring-shaped boss (105) are respectively provided with a front sealing piece (3) and a rear sealing piece (5); the rear sealing piece (5) is close to the side of the straight tube section (201) of the outer tube (2); and the front sealing piece (3) and the rear sealing piece (5) are covered in the convex tube section (204). The internal-pressure self-sealing rotary tube joint has the advantages of simple structure, convenient manufacturing and low cost.

Description

[0001] This application is a divisional application of the invention patent with application number 200910027028.3. technical field [0002] The invention relates to a pipe joint, especially a rotary pipe joint used in pipelines, which can realize self-sealing under the action of high pressure in the pipeline itself and at the same time enable the inner and outer pipes to rotate relative to each other to realize automatic compensation of the length of the pipeline. , specifically an internal pressure self-sealing rotary pipe joint. Background technique [0003] At present, the traditional sleeve type, bellows type and steel ball type pipeline compensation devices have been gradually replaced by rotary compensators due to their complex structure, high cost, inconvenient installation and small compensation amount, and are currently being used in large quantities. The compensator has the advantages of simple structure, convenient manufacture and large amount of compensation. Se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L27/08F16L27/12
Inventor 宋章根
Owner 宋章根