Pipeline connecting device

Abstract

The invention discloses a pipeline connecting device. The pipeline connecting device is connected between pipelines in a train to absorb the deformation amount of expansion caused by heat and contraction caused by cold of the pipelines. The pipeline connecting device comprises pipe joints connected with the pipelines and telescopic connecting pieces arranged between the pipe joints. According to the pipeline connecting device, a pipeline allowing media in the pipelines to circulate is formed between the pipelines by the telescopic connecting pieces, meanwhile, deformation of the telescopic connecting pieces is utilized, the telescopic connecting pieces are stretched correspondingly when the pipelines are contracted due to the cold so as to guarantee the connection stability of the pipelines, or the telescopic connecting pieces contracted correspondingly when the pipelines are expanded due to the heat so as to accommodate the deformation amount of the pipelines. Thus, the pipeline connecting device can absorb the stress which is produced by deformation of expansion caused by the heat and contraction caused by the cold of the pipelines originally and acts on the pipe joints, the pipelines and the pipe joints cannot be affected by the deformation telescopic amount, deformation or loosening is avoided during operation of the train, and the condition that operation of the train is affected due to leakage of the media in the pipelines of the train is avoided.

Description

technical field [0001] The invention relates to the field of train components, in particular to a pipeline connection device. Background technique [0002] Pipes on trains expand when heated and contract when cooled. Due to the large span of the train running distance and the obvious temperature difference in the operating environment of the train during operation, the pipeline will have a relatively large deformation during operation. For a stainless steel pipe with a length of 1 m, its thermal expansion and contraction during train operation are usually between 0.35 and 0.38 mm. The length of each steel pipe in the train is set to 6m, and the thermal expansion and contraction between the steel pipes of the whole train can reach 5-8 mm. [0003] Since the pipes on the train itself have no stress-absorbing structure or space to accommodate deformation, the expansion and contraction of the whole vehicle of 5-8 mm can only be released on the pipe joints connected between the...

AI Technical Summary

Problems solved by technology

During the operation of the train, the pipe joint needs to withstand the vibration of the train, and also needs to be stretched or compressed by the thermal expansion and contraction of the train pipeline, so it is easy to deform or loosen, resulting in the leakage of the medium in the pipeline and affecting the operation of the train

Images