How to attenuate pipeline vibration?
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The company currently has a steam recovery system designed to recycle the condensate from medium-pressure steam. This condensate has a pressure of 4.85 bar, a temperature of around 150 degrees, and a flow rate of 20 t/h; the diameter of the pipes used for transporting it is 6 inches. It is then reduced in pressure using a pressure regulator to around 70 Kpa, at which point the temperature is about 116 degrees, and the diameter of the pipes used for transportation after pressure reduction is 8 inches. The pressure reducing valve is located at ground level; after the pressure is reduced by this valve, the pipeline rises about 10 meters before feeding from the top of the tank to the bottom of it. Currently, the pipeline downstream of the pressure relief valve as well as the tower platform are vibrating, and one of the two elbows near the pipeline entering the tower has already started to leak. Based on relevant experience, for vibrating pipes, the common solutions are to increase the pipe diameter or add more fixing brackets; however, it is not easy to add such brackets to this pipe at present. Dear expert, is there any good way to reduce pipeline vibration or to cause it to decay?
If the vibration cannot be eliminated, it is better to use a sliding bracket or a guiding bracket
Add shock-absorbing components like expansion joints?
Use sliding pipe supports or guide pipe supports; elastic ones are also acceptable. It is best to design this from the outset by installing traps on the gas supply lines to remove condensate
In this method of recovering low-pressure vapor through condensate flashing, the condensate is first depressurized and then fed into a flash tank; the secondary vapor from the top of the tank is sent to the users, while the condensate at the bottom of the tank is sent to the boiler room. By installing a pressure regulator on the condensate pipe, a two-phase flow will be present downstream of the valve, which certainly leads to severe vibration
Vaporization and flashing may occur after the pressure relief valve; the unstable gas-liquid phase leads to vibration. Try changing one of the two parameters: 70 Kpa or 116 degrees