Cord thread winding type reducing arc flexible tube with large displacement compensation capacity

Abstract

The invention relates to a cord thread winding type reducing arc flexible tube with large displacement compensation capacity. The two ends of an arc flexible tube body are connected with flange joints. The two ends of the arc flexible tube body have different drift diameter sizes, the arc surface of the arc flexible tube body is an axisymmetric and tapered arc surface relative to the central axisof the arc flexible tube body, and the drift diameter size of the flange joints is matched with the drift diameter size of the arc flexible tube body at the connecting end. The arc flexible tube bodyis a single arc tube body arching outward in the radial direction, the circular arc radius of the arc tube body is equal to the circular arc chord length of the arc tube body, and the two ends of thearc tube body are in circular arc transition with the flange joints. The arc flexible tube body sequentially comprises an inner rubber inner, a framework layer and an outer rubber layer from inside tooutside, and the inner rubber layer and the outer rubber layer are rubber layers. The flange joints adopt a three-flange integrated flange joint structure and is integrated with the arc flexible tubebody by vulcanization. The cord thread winding type reducing arc flexible tube with large displacement compensation capacity can be used for reducing flexible connection of a pipeline and has good large displacement compensation capacity and vibration reduction impact resistance capacity.

Description

technical field [0001] The invention relates to a cord-wound arc-shaped flexible pipe with different diameters and large displacement compensation capability. The flexible connecting pipe belongs to the technical field of pipeline connectors, and is mainly used for medium and low pressure pipeline systems with different diameter connection requirements and a diameter above DN40. Background technique [0002] In various industrial fields such as petroleum, chemical industry and shipbuilding, hydraulic and pneumatic pipelines will generate corresponding forces and displacements under the action of factors such as thermal expansion and contraction, vibration and shock, so rubber is widely used in pipeline systems. The flexible connecting pipe plays the role of vibration reduction and noise reduction, impact resistance, displacement compensation and transmission medium. In the design and use, it is necessary to consider the performance of the pipe body such as compressive streng...

AI Technical Summary

Problems solved by technology

[0005] 2) Metal transition joints with different diameters externally connected to arc-shaped flexible pipes: the joints have excellent pull-out resistance and sealing performance, high displacement compensation capability and vibration damping performance of flexible pipes, good balance, and high safety factor, but the externally connected different diameters Metal transition joints will cause fluid turbulence in the piping system, affect its damping effect, and generate additional noise;

[0006] 3) For example, on the basis of the existing arc-shaped flexible pipe, it is difficult to realize the reliable pipe body forming process of the arc-shaped flexible pipe with different diameter structure by adopting the usual "cord covering + inflatable molding" process

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