Internal expansion type rubber sealing ring and application thereof

A rubber sealing ring, rubber sealing technology, applied in the direction of pipes/pipe joints/fittings, mechanical equipment, pipe components, etc., can solve the problems of large pipeline plugging workload, unusable sealing rings, large investment, etc., to achieve plugging Good effect, improved sealing effect, short construction period

Inactive Publication Date: 2016-08-03
MAANSHAN HONGLI RUBBER PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of large workload, long construction period, large investment and non-universal sealing rings in the pr

Method used

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  • Internal expansion type rubber sealing ring and application thereof
  • Internal expansion type rubber sealing ring and application thereof
  • Internal expansion type rubber sealing ring and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Example 1

[0040] Such as figure 1 with 2 As shown, an internal expansion rubber sealing ring of this embodiment includes a rubber sealing band 1 and an internal expansion steel ring 2. The rubber sealing band 1 is applied to the gap formed after the pipe socket 4 is inserted into the pipe socket 5. The width is 10cm, the diameter is 110cm, the inner diameter of the pipe socket 4 is 120cm; the inner expansion steel ring 2 has a diameter of 120cm, and it closely adheres to the inner wall of the rubber sealing band 1 to form an inner expansion structure.

[0041] A municipal official in a city found that there were water leaks at all sockets of a DN1200 pre-stressed concrete pipeline of nearly 3 kilometers. After analysis, the pipeline was laid ten years ago. figure 1 As shown, the sealing is completed by setting a ring of sealing ring 3 on the outer edge of the pipe socket 4, and then inserting the pipe socket 4 into the pipe socket 5 to complete the pipe connection. Due to t...

Example Embodiment

[0046] Example 2

[0047] The internal expansion type rubber sealing ring of this embodiment has the same basic structure as that of embodiment 1. The improvement lies in: there are two internal expansion steel rings 2 with a width of 50mm each; the width of the rubber sealing band 1 is 500mm, and the rubber seal The axial middle of the belt ring 1 is close to the gap formed after the pipe socket 4 is inserted into the pipe socket 5, the inner wall at both ends and the two inner expansion steel rings 2 form an inner expansion structure, and two sealing bands are formed on both sides of the gap. A groove 12 is provided on the side where the rubber sealing band 1 and the inner steel ring 2 are in close contact, and the inner steel ring 2 is embedded in the groove 12. The width of the inner expansion steel ring 2 is consistent with the width of the groove 12, which can minimize the influence of the left and right movement of the inner expansion steel ring on the sealing effect. Suc...

Example Embodiment

[0053] Example 3

[0054] The internal expansion rubber sealing ring of this embodiment has the same basic structure as that of the second embodiment. The improvement lies in: the material of the rubber sealing band 1 is diene rubber, the width is 400mm, and the material is preferably EPDM rubber; internal expansion steel The width of ring 2 is 50mm; there are 7 water stop lines 11, which are equivalent to 7 sealing rings, which reduces the influence of the roughness of the inner wall of the pipeline on the sealing effect.

[0055] The application of an internal expansion rubber sealing ring of this embodiment is the same as that of the second embodiment.

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Abstract

The invention discloses an internally expanding rubber sealing ring and its application, belonging to the technical field of secondary sealing of large pipelines. The internal expansion rubber sealing ring of the present invention includes a rubber sealing band and an internal expansion steel ring, the rubber sealing band is applied to the gap formed after the pipe socket is inserted into the pipe socket, and the internal expansion steel ring is close to the rubber seal The inner wall is ringed to form an inward expansion structure. The application of the internally expanding rubber sealing ring of the present invention completes the sealing work of the leaking point through the steps of locating the leaking point→laying→inwardly expanding→supporting. The invention achieves the purpose of tight plugging, simple operation, and low cost, and can realize the repair of internal expansion seal plugging of pipelines of various specifications by adjusting the circumference of the rubber sealing ring belt.

Description

technical field [0001] The invention relates to the technical field of secondary sealing of large pipelines, in particular to an internally expanding rubber sealing ring and its application. Background technique [0002] In many municipal pipeline projects in the past, due to cost and other reasons, bad aprons or common material aprons were used in buried prestressed concrete pipes or steel cylinder concrete water pipelines. Leakage will occur at the interface. In order to plug the leakage, the traditional construction method in the past is to excavate the pipeline and replace the failed sealing ring. This construction method has a large workload, a long construction period and a large investment. [0003] After searching, the patent document of Chinese Patent Publication No.: CN202469007U, Publication Date: 2012.10.03 discloses an inwardly expanding bidirectional large-gap sealing ring including a pressure-bearing circular arc block, an anti-out pin and a sealing ring body....

Claims

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Application Information

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IPC IPC(8): F16L55/163
CPCF16L55/163
Inventor 黄良根高虹李权
Owner MAANSHAN HONGLI RUBBER PROD
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