Expansion joints

What Are Expansion Joints?

Expansion joints are devices containing a bellows membrane that are designed to absorb dimensional changes, such as those that occur due to thermal expansion or contraction of a pipeline, duct or vessel.

Piping Expansion Joint Construction

TYPES OF EXPANSION JOINTS

Pipe expansion joints are also known as compensators, as they 'compensate' for the thermal movement.

Expansion joint accessories
  1. Bellows
  2. Angle Flange
  3. Weld End
  4. Liner (Baffle)
  5. Cover
  6. Particulate
  7. Barrier/Insulation
  8. Liner Seal
  9. Purge
Expansion joint accessories
CUSTOMISED EXPANSION JOINTS

Expansion joints are designed to safely absorb the movement in pipework systems due to heat-induced expansion and contraction of pipework.

What industries use expansion joints?

Expansion joints are used in all kinds of different sectors and in a huge range of different industrial contexts. Essentially, wherever there is a need to control pipework movement expansion joints are required.

Application

补偿器选用技巧

补偿器采用矩形截面,圆角波形,管道中单个膨胀节承受二维方向位移。由2个膨胀节组成的肘接管道可承受三维方向位移。矩形圆角金属波纹膨胀节有全高、半高型、按照烟道尺寸,应力应变要求用户可多波节选用。

补偿器安装试压

波纹膨胀节与管道支座的安装方法详见下图,在安装过程中必须一致遵守。

补偿器疲劳测试

疲劳寿命设计由波纹管补偿器的失效类型及原因分析可以看出,波纹管的平面稳定性、周向稳定性及耐腐蚀性能均与其位移量即疲劳寿命相关。过低的疲劳寿命将会导致波纹管稳定性及耐蚀性能下降。根据试验和使用经验,用于供热工程的波纹管疲劳寿命应不小于1000次。

Welding
Expansion joints with stainless steel bellows
Double flange with bolts& nuts
Connected with flange and bolt
Well packing
Well packing


SUNNY STEEL

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