压壳出口因油气积累而引起的增压器压气端漏油：检查增压器，确认增压器是合格品，一般可以从增压器的使用情况来分析，如使用环境灰尘大，引起空滤清器堵塞造成负压达5.5kPa以上，即会造成增压器压气端漏油；汽车在山区下大坡，沼气发电机组不加油门低速行驶15分钟以上，增压器中压叶轮背面建立不起气封形成真空也会引起增压器压气端漏油。只要经常保养空滤清器，沼气发电机组怠速时间不要过长，这种假性漏油现象即可排除。

Oil leakage at the compressor end of the turbocharger caused by oil and gas accumulation at the outlet of the pressure shell: Check the turbocharger and confirm that it is a qualified product. Generally, the use of the turbocharger can be analyzed. If the environment is dusty, causing blockage of the air filter and negative pressure exceeding 5.5kPa, it will cause oil leakage at the compressor end of the turbocharger; When a car is driving downhill in a mountainous area and the biogas generator set is driven at low speed without refueling for more than 15 minutes, the inability to establish a gas seal on the back of the medium pressure impeller of the turbocharger can also cause oil leakage at the compressor end. As long as the air filter is regularly maintained, the idle time of the biogas generator set should not be too long, and this false oil leakage phenomenon can be eliminated.

机油压力过高会引起增压器漏油：沼气发电机组增压器的进油压力过高也是引起增压器漏油的原因之一。当我们经检查确认增压器是合格品，而又发现沼气发电机组的机油压远高于说明书的规定，则要检查沼气发电机组的润滑系统，调压阀是否卡死或失灵，沼气发电机组的机油压力正常了，增压器的漏油即可排除。

Excessive oil pressure can cause oil leakage in the turbocharger: Excessive inlet oil pressure in the turbocharger of a biogas generator set is also one of the reasons for oil leakage in the turbocharger. When we confirm through inspection that the turbocharger is a qualified product and find that the oil pressure of the biogas generator set is much higher than the specifications in the manual, we need to check whether the lubrication system and pressure regulating valve of the biogas generator set are stuck or malfunctioning. If the oil pressure of the biogas generator set is normal, the oil leakage of the turbocharger can be eliminated.

回油不畅会造成增压器漏油：沼气发电机组增压器的回油是靠油的自重从增压器回油管回入沼气发电机组中，如果回油管出现缩节和阻塞，增压器的回油不畅，增压器会出现两端渗漏机油。应排除回油不畅，在增压器完好的情况下，故障也即排除。

Poor oil return can cause oil leakage in the supercharger: The oil return of the supercharger in the biogas generator set relies on the weight of the oil to return from the supercharger oil return pipe into the biogas generator set. If the oil return pipe shrinks or is blocked, the oil return of the supercharger will be poor, and oil will leak from both ends of the supercharger. It should be ruled out that the oil return is not smooth, and the fault should be eliminated when the turbocharger is intact.

沼气发电机组在施工中频繁停车起动：沼气发电机组在施工中频繁停车起动，会引起增压器中间壳涡轮端结焦；同时引起中间壳回油腔结焦，使增压器回油腔缩小回油不畅产生漏油，应检查各易损件是否完好，并清除结焦。

Frequent stopping and starting of biogas generator units during construction: Frequent stopping and starting of biogas generator units during construction can cause coking at the turbine end of the intermediate shell of the turbocharger; At the same time, it causes coking in the intermediate shell return oil chamber, causing the turbocharger return oil chamber to shrink and the return oil to be blocked, resulting in oil leakage. It is necessary to check whether all vulnerable parts are intact and remove coking.

沼气发电机组窜气严重会造成增压器的回油不畅、增压器漏油：有些增压器发现漏油甚至两端漏油，经检查增压器是合格品，进油回油也正常，再进行拆检发现增压器主轴中段有很厚的油垢还有些发硬，铲除清洗后发现主轴中段变淡黄色且增压器回油管中亦有油垢，从以上现象可以判断为沼气发电机组窜气引起增压器的回油不畅。更换沼气发电机组四配套排除沼气发电机组下窜气，对增压器、回油管进行清洗，故障即可排除。

Severe gas leakage in the biogas generator set can cause poor oil return and oil leakage in the booster: some boosters are found to have oil leakage, even at both ends. After inspection, the booster is a qualified product, and the oil inlet and return are also normal. After dismantling and inspection, it was found that there is thick oil scale and some hardening in the middle section of the main shaft of the booster. After cleaning, it was found that the middle section of the main shaft has turned pale yellow and there is also oil scale in the return oil pipe of the booster, From the above phenomena, it can be inferred that the biogas generator unit's blowby caused poor oil return of the booster. Replace the four supporting biogas generator sets to eliminate the downward gas leakage of the biogas generator set, clean the booster and return oil pipe, and the fault can be eliminated.