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?

為避免燃氣發電機組因為柴油堵塞，無法疾速進入作業狀況，通常在室外溫度低于5攝氏度。是（對準0號柴油），敞開燃氣發電機組的電加熱功能。

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.

燃氣發電機組電加熱功能及維護方法

Electric heating function and maintenance method of gas generator set

燃氣發電機組作為市電和UPS的后備電源，需求保證其隨時可用。因為燃氣中含有一定量的蠟，在冬天氣溫較低的時分，這些蠟會逐步分出，乃至致使柴油凝結無法活動。當柴油分出的蠟開端堵塞濾清器然后影響油路的正常供油時，此刻的溫度稱為柴油的冷慮點。

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號柴油為例，其凝結點為0攝氏度，冷濾點為4攝氏度。通常在室外溫度低于5攝氏度時，敞開電加熱功用，使得柴油的狀況抱負，可隨時投入作業。電加熱會耗費一定量的電能，因而，應注意在恰當的溫度敞開這一功用。例如，當溫度遠高于所運用柴油的冷濾點時，不該敞開這一功用。

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.

總的來說，在恰當的溫度敞開電加熱功用，可以使燃氣發電機組隨時投入作業。

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

目前濟柴燃氣發電機組于以下維護方法：

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

1、對柴油發電機組的四漏現象、表面、啟動電池、機油和燃油等的檢查；

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

2、清潔改善機房環境，定期更換三濾；

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

3、每月進行空載，每半年進行加載試機等方面維護；

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

4、使用電源監控進行實時觀測電質量參數。

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

5、現有維護手段局限性：

5. Limitations of existing maintenance methods:

現有維護中的加載測試也只是對后端現有用電設備的帶載測試，存在一定風險，并且功率較低；

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;

更換三濾或經過大修沒有科學依據；

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

更換三濾或經過大修后，沒有專門負載進行加載試機，不清楚是否能達到預期目的；

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;

空載試機和小功率帶載產生的大量積碳。

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

燃氣發電機組在小負荷下運行，隨著運行時間的延續，會出現以下故障：

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

1、對于增壓式柴機組，由于低載、空載，增壓壓力低，容易導致增壓器油封（非接觸式）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、增壓器的增壓室內機油積聚到一定程度，就會從增壓器的結合面處滲漏出。

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

3、上竄至汽缸的一部分機油參與燃燒，一部分機油不能完全燃燒，在氣門、進氣道、活塞頂、活塞環等處形成積炭，還有一部分則隨排氣排出。這樣，汽缸套排氣道內就會逐步積聚機油，也會形成積炭。

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、長期小負荷運行，還會更嚴重的導致運動部件磨損加劇，發動機燃燒環境惡化等導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，柴機組制造廠商無論對自然吸氣型還是增壓機型的使用都強調應盡量減少低載/空載運行時間，并規定更小負荷不能低于機組額定功率的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.

燃氣發電機組長時間滿載運行，不但可以提高本身性能，找出安全隱患，還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，市場上對燃氣發電機的的維保是指損壞維修和日常保養兩個方面：維修是指燃氣發電機產生故障后，針對所出現的故障進行更換各種配件等手段或是對燃氣發電機進行大修，清除機組內的積炭等；保養方面的主要從定期的換三濾來保證機組的各種性能指標良好。

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.