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贵州波纹管膨胀节管系防震的重要意义

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贵州波纹管膨胀节管系防震的重要意义

发布日期:2018-02-23 作者:贵州波纹管销售厂家 点击:

贵州波纹管膨胀节管系防震的重要意义

贵州波纹管销售厂家

The important significance of the shock proof of the expansion joint of the bellows in Guizhou


装有膨胀节管系的防振是十分复杂的工程问题。贵州波纹管销售厂家原则上应使膨胀节的自振频率、机器的激发频率、气柱的固有频率三者避免重合,一般措施如下描述:

The anti vibration of the expansion joint pipe system is a very complicated engineering problem。 The bellows manufacturer in Guizhou should make the three parts of the expansion joint free vibration frequency, the excitation frequency of the machine and the natural frequency of the gas column in principle。


1、改变波纹管自身的尺寸、材料、温度、端部条件和预变形等,调整膨胀节的自振频率。

1, change the size, material, temperature, end condition and pre deformation of the bellows, and adjust the vibration frequency of the expansion joint.


翡翠棋牌2、采用增添管道支承的方法改变管系的固有频率。

2. The method of adding pipe support is used to change the natural frequency of the pipe system.


3、通过改变管长来改变气柱的固有频率。

3, by changing the natural frequency to change the length of the air column.


须注意,由于压力脉冲能通过流动介质传递到膨胀节以外的地方,因此,当系统的振动是由压力脉冲引起时,不能用设置膨胀节、增添管道支承和捆绑加固的方法来消除,应考虑装设缓冲器和减振器,以使低频高幅振动转换为不太剧烈的较高频和较低振幅的脉冲。

Must pay attention to, because the pressure pulse can flow through the medium is transferred to the expansion joint outside, therefore, when the system vibration is caused by the pressure pulse, can not use the method section, add supporting pipeline and bundled reinforcement expansion to eliminate, should consider installing buffer and damper, so that the low frequency and high amplitude pulse vibration into less violent than high frequency and low amplitude.


金属膨胀节可以在高频、低幅的振动场合下使用,但不适用于低频、高幅振动的场合,例如活塞式压缩机、柴油机等引起的振动,因为这种振动会增加膨胀节的最大应力。在满足内压的情况下,波纹管的壁厚宜取小值,以降低固有频率,增加柔性,减轻负荷。

The metal expansion joint can be used in high frequency and low amplitude vibration situations, but it is not suitable for low frequency and high amplitude vibration situations, such as piston compressor, diesel engine and so on, because this vibration will increase the maximum stress of expansion joint. When the internal pressure is satisfied, the wall thickness of the bellows should be small, in order to reduce the natural frequency, increase the flexibility and reduce the load.


贵州波纹管销售厂家在有机器振动的管道上装设膨胀节时,应使膨胀节的一端尽量靠近机器,而与膨胀节另一端连接的管道,应尽可能在靠近膨胀节的地方固定。因为固定点如离膨胀节太远,则使膨胀节与固定点之间的管道成了悬臂梁,这样不但不能吸收振动,还会增加膨胀节的振动,缩短其寿命。

When bellows manufacturers in Guizhou have installed expansion joints on machine driven pipes, one end of the expansion joints should be as close as possible to the machine, while the pipes connected to the other end of the expansion joints should be fixed as close as possible to the expansion joints. Because the fixed point is too far away from the expansion joint, the pipe between the expansion joint and the fixed point becomes a cantilever beam, so that it can not only absorb vibration, but also increase the vibration of the expansion joint, and shorten its service life.


当流速很高时,在波纹管内形成的湍流,或在波纹管上游形成的紊流均可引发振动。为消减振动,应在波纹管内设置内置套筒。

When the flow velocity is high, the turbulence in the bellows, or the turbulence formed at the upper reaches of the bellows, can cause vibration。 In order to reduce the vibration, the built-in sleeve should be set in the bellows。


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