The gap between the bearing bush and the journal The past we used to measure the clearance between the bearing bush and the journal. The lead wire method is often used. This method uses the predicted main bearing bush because the main bearing is fixed and the upper cover is fastened to the main journal. Will not move. However, it is not suitable for measuring the large head tile. When the connecting rod bolt is tightened, the lead wire will be flattened, and the gap cannot be truly reflected. Therefore, we should use a dial gauge to measure the gap between the tile and the shaft according to the size of the shaft. Oiler common fault oiler is not oiled. The oiler is not oiled. It should be disassembled and inspected. The plunger and the pump body are excessively worn to increase the clearance and the pressure oil leaks back. The repair should be cleaned and the oil pump and plunger replaced. The oiler does not absorb oil and does not absorb oil. Seen from the oil hood, there is no oil drop. Indicates that the suction valve is stuck or that the oil cover is installed with unsealed air. Need to clean the oil suction ball valve in the oil pump and replace the oil cap rubber band. Insufficient oil supply to the oiler The oil supply is insufficient due to long-term operation of the uncleaned system, resulting in blockage of the pipeline, or the nut joint is not tightened after inspection, resulting in oil leakage. The pipe should be cleaned to tighten the fitting. The pressure is low and the gas volume is insufficient. The eight hydrogen compressors I have experienced before, the medium is hydrogen, and the light oil in the hydrogen often causes the valve and piston ring to fail. During the normal operation of the gas valve compressor, hydrogen enters and exits the cylinder through the suction and exhaust valve. The light oil contained in the hydrogen gas is adsorbed on the gas valve, so that the valve spring and the valve plate cannot work normally, which affects the displacement of the compressor. The air valve should be cleaned or replaced. The piston ring contains more light oil in the hydrogen. The piston reciprocates in the cylinder for a long time. The light oil enters the piston ring groove of the piston and firmly sticks to the piston ring, completely losing the elasticity, so that the piston ring has no sealing effect. The compressor is under-discharged and the pressure is low. The maintenance compressor is installed by a number of parts (precision machining) according to certain assembly requirements. If these parts are poorly constructed, the materials are not properly selected, and the assembly does not meet the requirements, etc., it will cause a malfunction. This type of failure occurs in the compressor itself and is a mechanical failure. In addition, the compressor is connected through the pipeline and the process flow, and if the operation is not normal, it will cause the compressor to malfunction. Others such as gas with liquid, lubricating oil, and interruption of cooling water can cause the compressor to malfunction. This type of failure is caused by external factors of the compressor and is a process failure. There are many reasons for the failure of the compressor. However, it is nothing more than the failure of these two aspects. In order to ensure the normal operation of the compressor and prolong the service life, regular maintenance inspection is very important. In addition to various instruments to measure the operation of the compressor, we have analyzed and judged after many years of analysis and summary. For: a look (observation of various on-site instructions, etc.); second listening (various unit operating noise, fault sounds, etc.); three touches (various temperatures, vibrations, etc.); four thoughts (analysis of various situations, status quo, etc.); Five records (timely record various conditions, parameters, etc.); six reports (when problems occur in time for reporting), through these measures can maximize the operation of the reciprocating compressor, thus ensuring long-term operation of the device.
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