May the discharge pipes of the safety valves for multiple devices in the same category be combined into one main pipe for drainage?

Generally, the relief valve discharge pipes of multiple devices in the same category can be combined into a single main pipe for discharge. However, the following points need to be noted: 1. Ensure that the diameter of the main pipe is large enough to accommodate the flow rate discharged by all the equipment. If the diameter of the main pipe is too small, it may result in excessive flow, thereby affecting the discharge performance of the safety valve. 2. It is necessary to divert and control the discharge pipes of each device to ensure that the discharge volume from each device does not exceed its design requirements. If the leakage rate of a certain device is too high, it may affect the leakage performance of other devices. 3. An appropriate layout for the drainage pipes and a suitable configuration of valves should be adopted to ensure that the direction and scope of drainage can be effectively controlled during discharge, thereby preventing harm to the surrounding environment and people. In summary, when connecting the discharge outlet pipes of safety valves from multiple devices in parallel, it is necessary to take various factors into account to ensure the safety and reliability of the system. -

It is generally not recommended to do this for the following reasons: 1. Safety valves are usually required to be installed directly on the pipes or equipment that need pressure relief; there should be no bends or valves in between. If multiple devices share one safety valve, it becomes necessary to use bent pipes or shut-off valves. 2. Sharing one safety valve among multiple devices means that their pipes are connected to each other. If one device fails and causes overpressure, it will lead to overpressure in all devices, leaving no chance to shut off the faulty device and maintain the operation of the other devices.

No, it’s that the safety vent pipes share the same main pipe; it’s not as it was before

Sure, in the end it’s all discharged into a flare

You’re welcome; feel free to ask me more questions if you have any. -

Whether it is possible depends on whether chemical reactions between the pressure-relieving gases pose safety risks, as well as on whether the cross-sectional area of the pipeline for pressure release is sufficient when releasing pressure at the same time; otherwise, it will affect the pressure relief process. Also, it is important to know whether the safety valve closes completely after pressure release and whether any issues can be detected in a timely manner, for reference.

To ensure that the materials can flow together without causing any reactions or similar issues

GB50251 has relevant provisions for gas transmission design