Flange flexible joint

Abstract

The invention relates to a flange flexible joint. The flange flexible joint comprises a first flange joint and a second flange joint. The peripheries of the two joints are rotatably provided with flange bolts correspondingly. The two flange bolts are fixedly connected through a fastener. The limitation of radial or circumferential movement between the joints is achieved. The end portions of the two joints are also provided with sealing grooves correspondingly, and a gasket is arranged between the two sealing grooves to seal inner pipelines of the joints. The inner ring of each sealing groove is further provided with a positioning ring. The positioning rings abut against the sealing grooves to prevent a sealing ring from making direct contact with a medium circulating in a joint inner pipeline. The flange flexible joint is simple in structure. Through the design of joint structures and the flange bolts, the fixed connection between the joints can be achieved just through the fastener, relative movement between the joint structures can be effectively limited, the gasket can be effectively protected, and the service life can be prolonged. According to the flange flexible joint, the flange bolts can rotate relative to the joints, so that assembling is convenient, and the sealing effect of the flexible joint is not influenced.

Description

technical field [0001] The invention relates to the field of train parts, in particular to a flange union. Background technique [0002] The pipes on the vehicle need to be connected through joints. The sealing of the joint parts between the existing joint parts is realized only through threads and sealing gaskets. [0003] There are following problems in the way of sealing between pipelines on the existing train: [0004] 1. During the operation of the train, there are high-frequency vibrations in the working environment of the pipeline on the train. The vibration acts on the mechanical structures such as pipelines and joints, which will correspondingly squeeze the sealing gasket inward, causing mechanical fatigue and easy Damaged, loss of sealing effect; [0005] 2. The above-mentioned upper-frequency vibration during the operation of the train directly acts on the joints, which may easily cause radial movement between the joints, resulting in loosening of the threads, ...

AI Technical Summary

Problems solved by technology

[0004] 1. During the operation of the train, there are high-frequency vibrations in the working environment of the pipeline on the train. The vibration acts on the mechanical structures such as pipelines and joints, which will correspondingly squeeze the sealing gasket inward, causing mechanical fatigue and easy Damaged, loss of sealing effect;

[0005] 2. The above-mentioned upper-frequency vibration during the operation of the train directly acts on the joints, which may easily cause radial movement between the joints, resulting in loosening of the threads, resulting in loose connection between the joints and leakage of the medium in the pipeline

[0006] 3. The joint structure provided by our company in the prior application 2019109363681 can limit the radial movement between the joint heads, but its structure is relatively complicated. During the installation process, the positioning part and the limit device need to be placed on the joint part respectively The outer circumference of the joint, press the positioning part to realize the fastening of the bolts in the joint part

In use, although the structure is fixed and has a good sealing effect, it is easily restricted by the narrow installation environment and is inconvenient to install

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