Vibration resistant sealing connecting pipe

Abstract

The invention relates to a vibration resistant sealing connecting pipe. The vibration resistant sealing connecting pipe comprises an inner pipe and an outer pipe, wherein the pipe diameter of one end of the inner pipe is gradually reduced to form a first connecting end pipe; the first connecting end pipe has an isosceles-trapezoid-shaped cross section; the pipe diameter of one end of the outer pipe is gradually reduced to form a second connecting end pipe; the second connecting end pipe also has an isosceles-trapezoid-shaped cross section; the outer diameter of the minimum end of the first connecting end pipe is smaller than that of the second connecting end pipe; the first connecting end pipe extends into the second connecting end pipe; a circle of fixing ring is arranged at the minimum end of the first connecting end pipe; a circle of welding block is arranged on the outer wall of the fixing ring; and the circle of welding block is in contact with the inner wall of the second connecting end pipe and welded with the inner wall of the second connecting end pipe in a welding manner. The vibration resistant sealing connecting pipe has the benefits as follows: the vibration resistance is good, and the sealing property is excellent.

Description

technical field [0001] The invention relates to a connecting pipe, in particular to an anti-seismic sealing connecting pipe. Background technique [0002] Various forms of piping connections are utilized during gas flow within many mechanical components. Chinese patent 201020195570.8 disclosed a gas connection pipe on January 19, 2011. The gas connection pipe includes an inner pipe and an outer pipe. One end of the inner pipe is socketed with one end of the outer pipe. A crimping joint sleeve, the ring-shaped extruding joint sleeve securely connects the inner tube and the outer tube by way of interference fit or welding. [0003] However, when the mechanical parts at both ends of the gas connecting pipe vibrate strongly with the operation of the machine, since the inner and outer pipes in the above-mentioned gas connecting pipe are fixed by interference fit or welding through the annular extrusion joint sleeve Together, therefore, not only can not absorb the shock, so that...

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Problems solved by technology

[0003] However, when the mechanical parts at both ends of the gas connecting pipe vibrate strongly with the operation of the machine, since the inner and outer pipes in the above-mentioned gas connecting pipe are fixed by interference fit or welding through the annular extrusion joint sleeve Together, therefore, not only can not absorb the shock, so that the socket of the inner pipe and the outer pipe is prone to breakage or the inner pipe is separated from the outer pipe, shortening the service life of the gas connection pipe and having a high failure rate, and when in When the exhaust end of the engine is used, it cannot absorb thermal expansion and reduce the large thermal stress generated when the engine exhausts, which will cause the pipeline to break easily

In addition, because the connection between the inner pipe and the outer pipe in the above-mentioned gas connecting pipe is connected by an annular extrusion joint sleeve, the airtightness is poor, resulting in air leakage.

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