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Reciprocating compressors are a commonly used type of compression equipment in industrial production, and their piping layout is crucial for ensuring the safe and efficient operation of the equipment. The following provides a brief overview of the requirements regarding the piping layout of reciprocating compressors as well as issues that are often overlooked in their design: 1. Requirements for the inlet and outlet piping 1) The inlet and outlet pipes of the compressor should be short and straight, with as few bends as possible. When the outlet pipeline expands due to heat, it is necessary to ensure that the pipeline has flexibility. 2) As long as the flexibility of the piping system can be maintained, elbows should be used as little as possible. When their use is necessary, 45° elbows or elbows with a larger radius of curvature should be employed to reduce the impact of excitation forces on the piping system. 3) The buffer tank should be located near the compressor inlet and outlet to enhance vibration prevention or reduction effects. 4) If necessary, orifice plates should be installed at the inlet and outlet flanges of the container to reduce pressure unevenness within the pipe section and achieve vibration reduction. 5) The pipeline layout should be as low as possible; the supports should be placed on the ground and use independent foundations, in order to increase the rigidity of the supports and pipelines, and suspension hangers should be avoided. 6) It is not advisable to anchor the supports of the outlet pipe to the beams and columns of the building. 7) The piping layout should take into account the natural flow of the liquid to the liquid separation tank; when liquid pockets form in the pipes, a low-point drain should be provided for emptying them. 8) When the medium in the compressor is a flammable gas, plug plugs, pipe caps, or flange covers should be installed on the drain valves at the lowest points of the pipes and the vent valves at the highest points to prevent leaks. 9) When installing the inlet and outlet pipes of the compressor, it should not interfere with the movement of the maintenance crane. 10) The pipes of the compressor should be arranged beneath the operation platform, to provide ample space around the unit for operation and maintenance. 2. Design issues that are easily overlooked: 1) For the nitrogen filling and venting pipelines of multi-stage compressors, separate installations are required due to differences in pressure. 2) If multiple compressors are used as backups for each other, valves must be added to all common pipelines to prevent air from passing between them. 3) For the pipelines of the inlet and exhaust buffer tanks at each stage of the compressor, it is advisable to install drain valves in the buffer tank itself to prevent condensate water from entering the cylinders and causing liquid slugging. 4) It is advisable to design gas-liquid separators at all levels to have automatic drainage, in order to prevent excessive moisture from being carried into the next buffer tank. 5) Bleed valves are installed on the cooling water pipelines for cylinders and packing at all levels, allowing it to be checked whether hydrogen is leaking in the water when necessary. 6) Try to install a thermometer as close as possible to the outlet of the cooler; by comparing the temperature in the inlet buffer tank, the amount of water circulating can be adjusted in a timely manner to prevent excessive water from condensing in the buffer tank.