Compressor piping design

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1. The layout of the inlet and outlet pipelines of centrifugal and axial flow compressors should minimize the number of elbows to reduce pressure drop under the conditions of meeting thermal compensation and the allowable pressure of the compressor nozzle; 2. When designing the pipeline, self-compensation should first be considered, when self-compensation cannot reduce the thrust of the compressor nozzle; 3. The inlet and outlet pipelines of the centrifugal or axial flow compressors arranged in the factory building must be equipped with detachable nipples to facilitate crane inspection of the compressor. 4. Both the inlet and outlet of the centrifugal or axial flow compressor should be equipped with cut-off valves, and the outlet pipeline should also be equipped with a check valve to prevent the flow of material from flowing back into the body when the compressor is switched or shut down in an accident; 5. The compressor should be as close as possible to the upstream equipment to make the compressor inlet pipeline short and straight with minimal elbows. Manholes or disassembled nipples should be provided on the inlet pipeline to facilitate the installation of temporary filters and cleaning of the pipeline; 6. Each inlet pipe of multiple combustible gas compressors should be connected from the top of the main pipe. When the suction medium is gas, the inlet pipe should be insulated or traced; and a shut-off valve should be installed at the inlet for use during startup and shutdown. Inert gas replacement facilities should be installed; 7. When two or more centrifugal compressors are operated in parallel, in order to reduce the loss of parallel efficiency and avoid the difference in flow and pressure of each compressor; 7. The outlet pipeline of the combustible gas compressor should be based on the principle of self-compensation, and it is not suitable to install a bellows compensator; 9. In order to prevent the centrifugal compressor from surge or flying when the flow is small, an anti-flying control pipeline should be installed in front of the outlet cut-off valve.