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Elastic seal ring

An elastic sealing and sealing ring technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as leakage, affecting railway transportation safety, leakage and so on.

Inactive Publication Date: 2008-11-12
CRRC MEISHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the seal fails in use, it will cause leakage. For example, due to the influence of installation, use and maintenance on the air brake piping system of railway wagons running on my country's lines, leakage is common, especially in cold regions of my country, which is a long-term problem. Problems that cannot be solved since have seriously affected the safety of railway transportation

Method used

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings, but it should not be understood that the scope of the above subject of the present invention is limited to the following embodiments.

[0022] like figure 1 , 2 As shown: the elastic sealing ring is an O-shaped rubber sealing ring. There is a gap extending along the circumferential direction on the inner ring surface of the sealing ring body 4. The distance between the gap and the outer ring surface of the ring is 1.8mm, and the width is 0.5mm. To ensure sufficient strength of the elastic sealing ring, the gap forms two upper and lower lip-shaped sealing layers (1, 2), and its cross-sectional shape is an "E"-shaped cross-section. The air guide groove 3 provided between the upper and lower gaps will penetrate the upper and lower gaps to ensure that the air entering the upper lip seal layer can enter the lip seal layer at the bottom of the ring body. The size of...

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Abstract

The invention relates to an elastic seal ring, the top and the bottom of the inner ring surface of which are respectively distributed with an aperture extending along circumferential direction; an air conducting groove for communication is arranged between the top aperture and the bottom aperture; the section of the inner ring surface of the seal ring is E-shaped; a semi-O-shaped convex integrated with the ring body is arranged between the top and the bottom working surfaces of the ring body and the corresponding top and bottom apertures. The seal ring adopted by the invention has double functions of gauging sealing and active sealing, which can compensate to cause a second sealing when the situation that gauging sealing is failed for abnormal sealing conditions which do not meet the design appear, so as to ensure that the sealing structure has larger 'redundancy' and enhanced reliability; therefore, the seal ring can be installed and used in a novel self-sealing flange and existing flanges and can also be used as the seal ring of pressure air pipe sealing and connecting except a flange joint and is characterized by reasonable structure, convenient use, low cost and reliable sealing.

Description

technical field [0001] The invention relates to an elastic sealing ring, in particular to an elastic sealing ring for sealing connection of pressure gas pipelines. Background technique [0002] The structure of the sealing ring is various. The sealing of the existing flange joint is achieved by compressing the rubber sealing ring at a certain compression rate in its connection. It is a static seal, and the cross-sectional shape of the sealing ring is rectangular; Under working conditions, the rubber material has dual characteristics of viscoelasticity, and its mechanical behavior is similar to that of a high-viscosity fluid, which can transmit the sealing pressure to the surface of the material in contact with it. Most of the static seals are "passive" seals under the premise of ensuring that the seal structure meets the requirements of design, manufacture and maintenance, that is, the necessary compression rate of the seal ring must be maintained under working conditions. ...

Claims

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Application Information

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IPC IPC(8): F16L17/067F16J15/00
Inventor 伊松年吕英栗付平
Owner CRRC MEISHAN
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