發電機組原理

　　Principle of Generator Set

　　瓦斯氣體由儲氣罐進入煤層氣發電站預處理系統，經過過濾、除濕、增壓、降溫四大工序后送入發電機組進氣管，再經過瓦斯濾清器過濾，調壓閥調壓后與清潔空氣在混合器內混合，之后進入渦輪增壓器，再流入節氣閥。由于增壓后混合器溫度上升，經過節氣閥的混合器先經中冷器冷卻，再經進氣歧管進入燃燒室做功，驅動發電機發電。

　　Gas is stored in a gas tank and enters the pre-treatment system of a coalbed methane power station. After undergoing four major processes of filtration, dehumidification, pressurization, and cooling, it is sent to the intake pipe of the generator set. It is then filtered through a gas filter and regulated by a pressure regulating valve before being mixed with clean air in a mixer. It then enters the turbocharger and flows into the throttle valve. Due to the temperature rise of the mixer after turbocharging, the mixer passing through the throttle valve is first cooled by the intercooler, and then enters the combustion chamber through the intake manifold to do work and drive the generator to generate electricity.

　　二

　　Two

　　常見故障原因及處理方法

　　Common causes and solutions of malfunctions

　　氣源故障

　　Air source malfunction

　　(1)發電機組在啟動前應對燃氣的濃度、壓力、濕度進行檢查，基本要求為濃度≥30%，壓力為 10~35kPa，濕度≤80%，否則機組將無法啟動。

　　(1) Before starting the generator set, the concentration, pressure, and humidity of the gas should be checked. The basic requirements are a concentration of ≥ 30%, a pressure of 10-35kPa, and a humidity of ≤ 80%. Otherwise, the unit will not be able to start.

　　(2）若啟動機組未點火報出“超限盤車”故障，說明機組在啟動過程中是由燃氣的供應量不足導致，首先應檢查空燃比設定數值是否合理，其次應注意在盤車時燃油壓力的數值是否有變化，若無則說明燃氣在管路輸送的過程中有中斷的地方，檢查進氣手動閥和燃氣電磁閥是否打開。

　　(2) If the starting unit fails to ignite and reports a "over limit turning" fault, it indicates that the unit was started due to insufficient gas supply. Firstly, check whether the air-fuel ratio setting value is reasonable. Secondly, pay attention to whether the fuel pressure value changes during turning. If not, it indicates that there is an interruption in the gas delivery process in the pipeline. Check whether the intake manual valve and gas solenoid valve are open.

　　(3）如果機組正常啟動并網后功率不足或功率出現較大范圍波動，要確認機組排氣溫度是否正常。

　　(3) If the power of the unit is insufficient or fluctuates significantly after normal start-up and grid connection, it is necessary to confirm whether the exhaust temperature of the unit is normal.

　　如果排氣溫度較高，則可能是空氣濾芯堵塞，混合氣內空氣不足引起，應及時更換空氣濾芯；

　　If the exhaust temperature is high, it may be caused by a clogged air filter or insufficient air in the mixture. The air filter should be replaced in a timely manner;

　　或燃氣燃燒后的氣體沒有充分排除，也可能導致排氣溫度升高，檢查渦輪增壓器是否正常工作；

　　If the gas after combustion is not fully eliminated, it may also cause an increase in exhaust temperature. Check if the turbocharger is working properly;

　　如果排氣溫度正常，則通過卡連接特電子技師（ET）檢查燃油壓力的數值，若此數值經常性出現低于 95 則說明燃氣管路堵塞，需要進一步根據管路上的壓力表來分段判斷具體部位出現堵塞，并及時處理。

　　If the exhaust temperature is normal, check the fuel pressure value through the electronic technician (ET) connected to the card. If this value frequently drops below 95, it indicates that the gas pipeline is blocked. Further segmentation is needed based on the pressure gauge on the pipeline to determine the specific location of the blockage and handle it in a timely manner.

　　本文由 燃氣發電機組  友情奉獻.更多有關的知識請點擊  https://www.huannengpower.cn/   真誠的態度.為您提供為全面的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待.

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