燃氣發電機組停機前需要關閉的閥門主要包括以下幾個：

　　The valves that need to be closed before shutting down the gas generator set mainly include the following:

　　氣源蝶閥：在機組油溫、水溫降至40°C以下時，需要關斷機組的氣源蝶閥，以切斷燃氣的供應，防止不必要的燃氣泄漏和安全風險。

　　Air source butterfly valve: When the oil and water temperature of the unit drops below 40 ° C, the air source butterfly valve of the unit needs to be turned off to cut off the supply of gas, prevent unnecessary gas leakage and safety risks.

　　電磁閥開關：在停機過程中，需要將電磁閥開關置于斷開位置，以確保燃氣供應的完全切斷。

　　Electromagnetic valve switch: During the shutdown process, the electromagnetic valve switch needs to be placed in the off position to ensure complete cut-off of gas supply.

　　電調開關：同樣需要置于斷開位置，以配合電磁閥開關，確保燃氣發電機組的完全停機。

　　Electric control switch: It also needs to be placed in the off position to cooperate with the solenoid valve switch, ensuring the complete shutdown of the gas generator set.

　　燃料閥門：在控制面板上，將發電機開關和自動調速裝置開關置于“OFF”位置的同時，需要關閉燃料閥門，進一步確保燃氣供應的切斷。

　　Fuel valve: On the control panel, while placing the generator switch and automatic speed control device switch in the "OFF" position, the fuel valve needs to be closed to further ensure the cut-off of gas supply.

　　機組進風口閥門（如適用）：在停機后，可以關閉機組進風口閥門，以避免灰塵和雜物進入機組內部，保持機組的清潔和良好運行狀態。但請注意，這一步驟并非所有燃氣發電機組都必需，具體應根據機組型號和制造商的指導來確定。

　　Unit air inlet valve (if applicable): After shutdown, the unit air inlet valve can be closed to prevent dust and debris from entering the unit and maintain the cleanliness and good operating condition of the unit. However, please note that this step is not necessary for all gas-fired power generation units and should be determined based on the unit model and manufacturer's guidance.

　　此外，在停機前還需要做好以下準備工作：

　　In addition, the following preparations need to be made before shutting down:

　　卸去負荷：逐漸降低發電機組的負荷，確保機組處于空載狀態。這可以通過逐步關閉連接到發電機組的負載設備或逐漸減少負荷來實現。

　　Unload load: gradually reduce the load on the generator set to ensure that it is in an unloaded state. This can be achieved by gradually shutting down the load devices connected to the generator set or gradually reducing the load.

　　冷卻運行：讓發電機組在低負荷狀態下運行一段時間，以便冷卻系統正常運行，并將發電機組中的余熱散發掉。這有助于保護發電機組的部件和延長其壽命。

　　Cooling operation: Run the generator set at low load for a period of time to ensure the normal operation of the cooling system and dissipate the waste heat in the generator set. This helps to protect the components of the generator set and extend its lifespan.

　　檢查：進行必要的檢查，包括檢查燃料供應、潤滑油和冷卻液的水平，確保足夠的余量。同時檢查發電機組是否存在任何異常情況或故障，并及時處理。

　　Inspection: Conduct necessary checks, including checking the levels of fuel supply, lubricating oil, and coolant, to ensure sufficient margin. At the same time, check whether there are any abnormal situations or faults in the generator set and handle them in a timely manner.

　　在停機過程中和停機后，還需要密切觀察機組的運行狀態，確保機組能夠平穩地停機，無異常聲響和振動。等待機組完全停止后，可以關閉控制屏的電源，并切斷機組的總電源。

　　During and after the shutdown process, it is necessary to closely observe the operating status of the unit to ensure that it can shut down smoothly without any abnormal sounds or vibrations. After the unit has completely stopped, the power supply to the control panel can be turned off and the main power supply to the unit can be cut off.

　　請注意，以上步驟可能因不同的發電機組型號和制造商而有所差異。因此，在停機之前，務必查閱并遵循相應的操作手冊和指南。同時，如果對于操作不確定或沒有專業知識，請咨詢專業技術人員或發電機組制造商的支持團隊。

　　Please note that the above steps may vary depending on different generator models and manufacturers. Therefore, before shutting down, it is necessary to consult and follow the corresponding operation manual and guidelines. Meanwhile, if you are unsure about the operation or lack professional knowledge, please consult professional technicians or the support team of the generator set manufacturer.

　　本文由 燃氣發電機組  友情奉獻.更多有關的知識請點擊  http://www.pyucoin.com   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.

　　This article is a friendly contribution from a gas generator set For more related knowledge, please click http://www.pyucoin.com Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.