現(xiàn)代瓦斯發(fā)電機組具備在甲烷濃度波動時穩(wěn)定運行的能力。過去的機組對瓦斯氣源要求苛刻，難以適應甲烷濃度等參數(shù)的大幅變化。但隨著技術發(fā)展，研發(fā)人員對發(fā)動機的進氣系統(tǒng)、燃燒系統(tǒng)以及控制系統(tǒng)進行了改進。

Modern gas generators have the ability to operate stably when methane concentration fluctuates. The previous units had strict requirements for gas sources and were unable to adapt to significant changes in parameters such as methane concentration. But with the development of technology, researchers have made improvements to the engine's intake system, combustion system, and control system.

例如針對煤礦瓦斯這類甲烷濃度不穩(wěn)定的氣源，機組配備了智能調(diào)節(jié)裝置。當甲烷濃度降低時，裝置自動增加進氣量并優(yōu)化燃燒參數(shù)，保證發(fā)動機正常運轉(zhuǎn)；當甲烷濃度過高時，及時調(diào)整混合氣比例，防止發(fā)動機爆震，以此確保機組在甲烷濃度波動時的穩(wěn)定運行。

For example, for gas sources with unstable methane concentration such as coal mine gas, the unit is equipped with intelligent regulating devices. When the methane concentration decreases, the device automatically increases the intake air volume and optimizes the combustion parameters to ensure the normal operation of the engine; When the methane concentration is too high, adjust the mixture ratio in a timely manner to prevent engine detonation and ensure stable operation of the unit during fluctuations in methane concentration.

在發(fā)電效率方面，早期傳統(tǒng)燃燒方式下瓦斯發(fā)電機組的發(fā)電效率較低。而采用先進預混合燃燒技術的新型機組，通過精準控制瓦斯與空氣混合比例，使混合氣在進入燃燒室前達到理想狀態(tài)，極大提高了燃燒充分性。相較于之前傳統(tǒng)燃燒方式，發(fā)電效率可提升 10%-15% 。并且，采用高效余熱回收系統(tǒng)的瓦斯發(fā)電機組，能源綜合利用率可從過去的 30%-40% 提升至 60%-70%，雖然能源綜合利用率不完全等同于發(fā)電效率，但發(fā)電效率作為能源利用的關鍵部分，也隨著整體技術改進得到了顯著提升 。

In terms of power generation efficiency, the power generation efficiency of gas generators under early traditional combustion methods was relatively low. The new unit using advanced premixed combustion technology achieves ideal combustion conditions before entering the combustion chamber by precisely controlling the gas and air mixing ratio, greatly improving combustion adequacy. Compared to traditional combustion methods, the power generation efficiency can be improved by 10% -15%. Moreover, gas generators equipped with efficient waste heat recovery systems can increase the comprehensive energy utilization rate from 30% -40% in the past to 60% -70%. Although the comprehensive energy utilization rate is not completely equivalent to the power generation efficiency, the power generation efficiency, as a key part of energy utilization, has also been significantly improved with overall technological improvements.

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