CN2129364Y

CN2129364Y - Self-sealing slide adaptor

Info

Publication number: CN2129364Y
Application number: CN 92230681
Authority: CN
Inventors: 张兆基
Original assignee: XI AN THERMOTECHNICAL INST MIN
Current assignee: XI AN THERMOTECHNICAL INST MIN
Priority date: 1992-08-13
Filing date: 1992-08-13
Publication date: 1993-04-07
Anticipated expiration: 2002-08-13

Abstract

The utility model relates to a self-sealing slide adaptor, and an annular sealing tube 2 is arranged between the inner wall of a shell 1 and the outer wall of a lead-out pipe 3; the lead-out pipe 3 and the shell 1 can generate phase moving slippage, to compensate the change in the length of pipelines because of heat expansion and cold contraction, and the sealing tube 2 which is expansion deformation because of heating can reach excellent sealing effect. The utility model is suitable for various pipeline systems of normal temperature or fluid temperature above ambient temperature.

Description

Self-sealing slide adaptor

A kind of selfsealings sliding tube joint belongs to the connection seal arrangement of pipeline.

In pipe-line system, all adopt Ω shape pipe or bellows to compensate the phenomenon of expanding with heat and contract with cold that pipeline is produced owing to temperature variation usually.And the pipeline of this several types is progressively replaced by various types of pipe joint because tubing that consumes and thermal insulating material amount reach deficiencies such as easy spalling greatly.But the pipe joint of using is all realized by compressing sealing gasket now, because of various sealing gaskets are not to be easy to ageing failure, is easy to wearing and tearing exactly, so can not play good seal action.Also there is not at present to find to reach the pipe joint of seal action by the expanded by heating of object.

The purpose of this utility model will overcome above-mentioned the deficiencies in the prior art exactly, can slide over each other with the phenomenon of expanding with heat and contract with cold of compensation pipeline and release a kind of parts, and realize sealing by the expanded by heating of seal ring, be convenient to the selfsealings sliding tube joint in quick connecting pipe road again.

Technical solution of the present utility model is to realize like this.The fairlead that the termination has a trim ring is socketed on the shell inner cavity of pipe joint, and can with the shell slide relative, between pipe joint outer casing inner wall and fairlead outer wall, a ring sealed tube is housed.Said sealed pipe is the hollow ring pipe.

Fig. 1: structural representation of the present utility model.

Fig. 2: the schematic representation of sealed pipe expanded by heating distortion.

Now in conjunction with the accompanying drawings embodiment of the present utility model is done a description.

Fig. 1 shows overall structure of the present utility model.The end of the fairlead 3 that is connected with pipeline extend into the inner chamber 5 of the shell 1 of pipe joint, and is provided with a trim ring 4 in the end of fairlead 3.But adorn the ring sealed tube 2 of an expanded by heating between the outer wall of the inwall of shell 1 and fairlead 3, sealing pipe 2 is a hollow ring pipe.Fixing by screw or welding between shell 1 and the connecting tube 6, trim ring can prevent that the displacement of sealed pipe 2 from coming off.The material of sealed pipe 2 is made with thin-wall stainless steel or with the material of the identical material of pipe joint.Since between the temperature variation of pipeline inner fluid and two pipe joints duct length produced expands with heat and contract with cold, can compensate by the displacement that is free to slide of fairlead 3 opposite shell 1, can replace the effect of Ω shape pipe or bellows fully.Owing between shell 1 inwall and fairlead 3 outer walls, be equipped with ring sealed tube 2, expand distortion (referring to Fig. 2) after sealing pipe 2 is heated again, can stop the leakage of fluid fully, and play good self sealing action.

The utility model is novel, and is simple in structure, with low cost, can compensate the length change that pipe-line system causes owing to expanding with heat and contract with cold.And, can reach good sealing effect owing to adopt the sealing configuration of sealed pipe expanded by heating distortion, and overcome the easy ageing failure of sealing gasket or be easy to deficiency such as wearing and tearing, be applicable to that fluid temperature (F.T.) is higher than the various pipe-line systems of normal temperature.

Claims

1, a kind of selfsealings sliding tube joint is characterized in that the fairlead 3 that the termination has a trim ring 4 is socketed on pipe joint shell 1 inner chamber 5, between the outer wall of shell 1 inwall and fairlead 3 ring sealed tube 2 is housed, and the outer wall of fairlead 3 can opposite shell 1 produces and slides.

2, pipe joint according to claim 1 is characterized in that said ring sealed tube 2 is the hollow ring pipe.