Jichai gas-fired generator set is widely used as emergency standby power supply for telecommunications, hospitals, campuses, financial parts, commerce and other parts, industrial and mining enterprises and residences, and independent power supply for special purposes such as military and field operations, vehicles and ships. So when is the most suitable time to open its electric heating function in the application of diesel generator set?

为避免燃气发电机组因为柴油堵塞，无法疾速进入作业状况，通常在室外温度低于5摄氏度。是（对准0号柴油），敞开燃气发电机组的电加热功能。

In order to prevent the gas generator set from entering the operation condition quickly due to diesel blockage, the outdoor temperature is usually lower than 5 ℃. Yes (align with No. 0 diesel), turn on the electric heating function of the gas generator set.

燃气发电机组电加热功能及维护方法

Electric heating function and maintenance method of gas generator set

燃气发电机组作为市电和UPS的后备电源，需求保证其随时可用。因为燃气中含有一定量的蜡，在冬天气温较低的时分，这些蜡会逐步分出，乃至致使柴油凝结无法活动。当柴油分出的蜡开端堵塞滤清器然后影响油路的正常供油时，此刻的温度称为柴油的冷虑点。

As the backup power supply of municipal power and UPS, the gas generator set needs to be available at any time. Because the fuel gas contains a certain amount of wax, these wax will gradually separate out when the temperature is low in winter, and even make the diesel oil unable to condense. When the wax separated from diesel starts to block the filter and then affect the normal oil supply of the oil circuit, the temperature at this moment is called the cold filter point of diesel.

以0号柴油为例，其凝结点为0摄氏度，冷滤点为4摄氏度。通常在室外温度低于5摄氏度时，敞开电加热功用，使得柴油的状况抱负，可随时投入作业。电加热会耗费一定量的电能，因而，应注意在恰当的温度敞开这一功用。例如，当温度远高于所运用柴油的冷滤点时，不该敞开这一功用。

Taking No. 0 diesel as an example, its condensation point is 0 ° C and its cold filter point is 4 ° C. Usually, when the outdoor temperature is lower than 5 ℃, the electric heating function is turned on, so that the condition of diesel is ideal and can be put into operation at any time. Electric heating will consume a certain amount of electric energy. Therefore, attention should be paid to opening this function at an appropriate temperature. For example, this function should not be turned on when the temperature is much higher than the cold filter point of the diesel used.

总的来说，在恰当的温度敞开电加热功用，可以使燃气发电机组随时投入作业。

In general, opening the electric heating function at an appropriate temperature can make the gas generator set put into operation efficiently at any time.

目前济柴燃气发电机组于以下维护方法：

At present, jichai gas generator set is limited to the following maintenance methods:

1、对柴油发电机组的四漏现象、表面、启动电池、机油和燃油等的检查；

1. Check the four leakage phenomenon, surface, starting battery, engine oil and fuel oil of diesel generator set;

2、清洁改善机房环境，定期更换三滤；

2. Clean and improve the environment of the machine room, and replace the three filters regularly;

3、每月进行空载，每半年进行加载试机等方面维护；

3. Carry out no-load maintenance every month and load test every half a year;

4、使用电源监控进行实时观测电质量参数。

4. Use power monitoring to observe power quality parameters in real time.

5、现有维护手段局限性：

5. Limitations of existing maintenance methods:

现有维护中的加载测试也只是对后端现有用电设备的带载测试，存在一定风险，并且功率较低；

The load test in the existing maintenance is only the load test of the back-end existing electrical equipment, which has certain risks and low power;

更换三滤或经过大修没有科学依据；

There is no scientific basis for replacing the third filter or overhaul;

更换三滤或经过大修后，没有专门负载进行加载试机，不清楚是否能达到预期目的；

After replacing the third filter or overhaul, there is no special load for load test run, and it is unclear whether the expected purpose can be achieved;

空载试机和小功率带载产生的大量积碳。

Large amount of carbon deposit generated by no-load test run and low-power load.

燃气发电机组在小负荷下运行，随着运行时间的延续，会出现以下故障：

When the gas generator unit operates under small load, the following faults will occur with the extension of operation time:

1、对于增压式柴机组，由于低载、空载，增压压力低，容易导致增压器油封（非接触式）的密封效果下降。

1. For supercharged diesel units, due to low load, no-load and low pressurization pressure, it is easy to reduce the sealing effect of supercharger oil seal (non-contact type).

2、增压器的增压室内机油积聚到一定程度，就会从增压器的结合面处渗漏出。

2. When the oil in the supercharger accumulates to a certain extent, it will leak from the joint surface of the supercharger.

3、上窜至汽缸的一部分机油参与燃烧，一部分机油不能完全燃烧，在气门、进气道、活塞顶、活塞环等处形成积炭，还有一部分则随排气排出。这样，汽缸套排气道内就会逐步积聚机油，也会形成积炭。

3. Part of the engine oil flowing up to the cylinder is involved in combustion, part of the engine oil can not be completely burned, and carbon deposits are formed at the valves, inlet ports, piston crown, piston rings, etc., and some are discharged with the exhaust. In this way, engine oil will gradually accumulate in the exhaust passage of cylinder liner, and carbon will also be formed.

4、长期小负荷运行，还会更严重的导致运动部件磨损加剧，发动机燃烧环境恶化等导致大修期提前的后果。

4. Long term low load operation will also lead to more serious consequences such as increased wear of moving parts and deterioration of engine combustion environment, leading to the advance of overhaul period.

因此，柴机组制造厂商无论对自然吸气型还是增压机型的使用都强调应尽量减少低载/空载运行时间，并规定更小负荷不能低于机组额定功率的25%—30%。

Therefore, the manufacturer of diesel generator set emphasizes to minimize the low load / no-load operation time regardless of the use of naturally aspirated or pressurized models, and stipulates that the minimum load shall not be less than 25% - 30% of the rated power of the unit.

燃气发电机组长时间满载运行，不但可以提高本身性能，找出安全隐患，还可以避免重大的事故。

Long time full load operation of gas generator can not only improve its performance, find out potential safety hazards, but also avoid major accidents.

目前，市场上对燃气发电机的的维保是指损坏维修和日常保养两个方面：维修是指燃气发电机产生故障后，针对所出现的故障进行更换各种配件等手段或是对燃气发电机进行大修，清除机组内的积炭等；保养方面的主要从定期的换三滤来保证机组的各种性能指标良好。

At present, the maintenance of gas-fired generators in the market refers to damage maintenance and daily maintenance: maintenance refers to the replacement of various accessories and other means for the failure of gas-fired generators after the failure of gas-fired generators, or the overhaul of gas-fired generators and the removal of carbon deposits in the units; In terms of maintenance, we mainly change the three filters regularly to ensure the good performance indexes of the unit.