In order to ensure the safety of everyone using the biogas generator set, the following analyzes the specific situation of the oil leakage fault of the biogas generator set:
1. Oil leakage at the compressor end of the turbocharger caused by the accumulation of oil and gas at the outlet of the compressor shell: Check the turbocharger and confirm that the turbocharger is a qualified product. Generally, it can be analyzed from the use of the turbocharger. If the environment is dusty, If the air filter is blocked and the negative pressure is above 5.5kPa, it will cause oil leakage at the compressor end of the supercharger; the car is going down a big slope in the mountainous area, and the biogas generator set is driven at low speed for more than 15 minutes without refueling. The medium pressure impeller of the supercharger No air seal can be established on the back and the formation of a vacuum will also cause oil leakage at the compressor end of the turbocharger. As long as the air filter is maintained frequently, the idling time of the biogas generator set should not be too long, this kind of false oil leakage can be eliminated.
2. Excessive oil pressure will cause oil leakage of the turbocharger: Excessive oil inlet pressure of the turbocharger of the biogas generator set is also one of the reasons for the oil leakage of the turbocharger. When we check that the turbocharger is a qualified product, and find that the oil pressure of the biogas generator set is far higher than the specification, we must check the lubrication system of the biogas generator set, whether the pressure regulating valve is stuck or malfunctioning, and the biogas generates electricity. When the oil pressure of the unit is normal, the oil leakage of the turbocharger can be eliminated.
3. Poor oil return will cause oil leakage from the turbocharger: the oil return of the turbocharger of the biogas generator set depends on the weight of the oil to return from the turbocharger oil return pipe to the biogas generator. If the oil return pipe is constricted and blocked, The oil return of the supercharger is not smooth, and the two ends of the supercharger will leak oil. Poor oil return should be ruled out. If the turbocharger is intact, the fault will be ruled out.
4. Frequent stop and start of biogas generator sets during construction: Frequent stop and start of biogas generator sets during construction will cause coking at the turbine end of the turbocharger’s middle shell; at the same time, it will cause coking of the oil return cavity of the middle shell and shrink the oil return cavity of the turbocharger. If the oil leaks due to poor oil return, check whether the wearing parts are in good condition and remove the coking.
5. Severe gas blow-by of the biogas generator set will cause poor oil return of the turbocharger and oil leakage of the turbocharger: some turbochargers have found oil leakage or even oil leakage at both ends. After checking that the turbocharger is qualified, the oil will return The oil is also normal. After disassembly and inspection, it is found that there is thick grease in the middle of the turbocharger spindle and a little hard. After removing and cleaning, it is found that the middle of the spindle turns light yellow and there is grease in the turbocharger oil return pipe. From the above phenomenon, it can be judged as The blow-by of the biogas generator set causes poor oil return of the turbocharger. Replace the biogas generator set and remove the blow-by gas from the bottom of the biogas generator set, clean the turbocharger and the oil return pipe, and the fault can be eliminated.
Post time: Oct-03-2021