Dual-seal spherical compensating joint

Abstract

The invention discloses a dual-seal spherical compensating joint which comprises a body and a spherical shell, wherein a section of the inner cavity of the spherical shell is in a spherical shape; the body is correspondingly provided with a section of spherical surface matched with the spherical shell; the spherical surface of the body is arranged in the inner cavity of the spherical shell, and one end of the spherical shell outwards extends to form a joint part; the joint part and the inner wall of the spherical shell form a step; the end surface of the joint part is connected with a press cover through a connecting bolt and a connecting nut, and the shape of the inner cavity of the press cover is matched with the inner cavity of the spherical shell to form a spherical inner cavity; a U-shaped sealing ring is arranged between the end surface of the press cover and the step of the spherical shell; in addition, the spherical inner cavity formed by the body and the spherical shell is also internally provided with a spherical rubber pipe; and two outward ends of the spherical shell and the body are provided with flanges. The invention has the advantages of simple structure, good deflection, good sealing effect and high safety and reliability.

Description

technical field [0001] The invention relates to a pipeline joint, and in particular to a double-seal spherical compensation joint with good sealing effect. Background technique [0002] At present, various pipeline systems such as: gas pipelines, water supply pipelines, oil pipelines, etc. are widely used in people's daily life. Pipeline deflection and thermal expansion and contraction caused by complex terrain, seasonal changes, and large temperature differences between day and night will have a serious impact on the pipeline. The general solution is to set compensation joints during the pipeline laying process to compensate for the axis of the pipeline The spherical compensation joint is a joint with a large deflection, which can be freely deflected within a range of 30° to compensate for the deflection of the pipeline and the pipe caused by the serious foundation settlement and the action of external force. There may be problems when the road turns and turns, so the requ...

AI Technical Summary

Problems solved by technology

[0002] At present, various pipeline systems such as: gas pipelines, water supply pipelines, oil pipelines, etc. are widely used in people's daily life. Pipeline deflection and thermal expansion and contraction caused by complex terrain, seasonal changes, and large temperature differences between day and night will have a serious impact on the pipeline. The general solution is to set compensation joints during the pipeline laying process to compensate for the axis of the pipeline The spherical compensation joint is a joint with a large deflection, which can be freely deflected within a range of 30° to compensate for the deflection of the pipeline and the pipe caused by the serious foundation settlement and the action of external force. There may be problems when the road turns and turns, so the requirements for its sealing and reliability are extremely high. Traditional pipe joints generally have the disadvantages of poor sealing effect and low safety and reliability.

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