Starting steps for a reciprocating compression machine

Thread Content

This post was last edited by Explore freely_RQ77y on 2022-4-9 at 17:26, detailing the working principle of single-stage compression piston compressors produced by Shenyang Yuanda. A compressor is a machine used to compress gas from low pressure to high pressure. To accomplish this task, it often employs multi-stage compression, with each stage of the cylinders undergoing the same processes of intake, compression, and exhaust. Theoretical cycle of the compressor. The theoretical cycle of the gas within the cylinder is characterized by the fact that, during suction and discharge, there is no pressure loss at the inlet and outlet valves; the pressure remains constant during these processes. The exponent in the compression process is a constant value, so no heat exchange occurs between the gas and the cylinder walls during compression. There is no residual volume within the cylinder to hold a small amount of high-pressure gas, and all of the gas can be discharged from the cylinder. Auxiliary equipment: motor lubricating oil pump, jacking oil pump, main oil station oil pump, motor oil station oil cooler (one of the two oil pumps, A or B, is in operation while the other is in standby), main oil station oil cooler, filler, high-level oil tank, compressor cooler, crankshaft turning motor, outlet liquid separation tank. I. Pre-startup checks: 1. Check the integrity of the compressor (all drain valves are closed and blind flanges are in place; there are no exposed areas on the compressor, no missing bolts or loose bolts; foundation bolts are not loose). 2. Check the status of the safety valve and shut off the bypass line. 3. Introduce sealing gas and adjust it to the appropriate pressure. Instrument air. 4. Slowly open the intake valve and purge with nitrogen to check for air leakage; if satisfactory, fill it with hydrogen and check for air leakage again. 5. Cooling water used includes: motor cooling water, main heat exchanger cooling water, oil station cooling water, compressor jacket cooling water, and cylinder packing cooling water. 6. Check the power supply to the motor oil pump, main oil pump, crankshaft turning motor, and main motor. 7. Check the levels in the high-level oil tank, the motor oil tank, the main oil tank, and the filler tank; verify that all instruments are functioning properly, and check the positive pressure purge air for the main motor. And check whether the air valve operates properly. 8. Start the oil pumps of the main oil station and the motor oil station; once the oil pressure and temperature are at appropriate levels, start the jacking oil pump. Set the oil supply pumps and the operating oil pumps in an interlocked mode. 9. Start the oil injector and check whether the oil injection is functioning properly. Hook up the crankshaft rotation motor, and once the pressure of the jacking oil pump is appropriate, inform the control room to begin crankshaft rotation. 10. Check for any abnormal noises in the compressor during the crankshaft rotation process. 11. Notify the control room to check whether the compressor interlock is functioning properly, and verify that the conditions for starting the machine are met; if everything is normal, prepare to start the machine. II. Starting the machine 1. Inform the control room to start the machine. 2. During the no-load operation of the recompressor, recheck the status of the compressor (whether there are any leaks, and whether all accessories such as the motor are functioning normally). 3. Contact the central control unit to start loading, and check the status of the compressor at each loading stage. 4. One may leave only after the system operates normally for 1 hour under full load. Note: 1. The main checks include the compressor’s vibration, exhaust temperature, motor bearing temperature, etc. Some of these checks are rough; please add more details, thank you!