Introduction to 300 Low Concentration Gas Generator Set

8300低濃度瓦斯發電機組是在8300高濃度瓦斯發電機組基礎上開發的，主要適用于8％～30％濃度范圍內的混合瓦斯氣體。

The 8300 low concentration gas generator set is developed on the basis of the 8300 high concentration gas generator set, and is mainly suitable for mixed gas in the concentration range of 8% to 30%.

2. 使用條件：

2. Service conditions:

低濃度瓦斯氣源條件：低濃度瓦斯氣輸送壓力5～15kPa，壓力變化率≤1kPa/min，變化速率≤5％/min；雜質粒度≤5μm，雜質含量≤30mg/Nm3, 水分含量≤40mg/Nm3，不含游離水，煤氣溫度≤40℃，含硫量≤20mg/Nm3。

Low concentration gas source conditions: low concentration gas transmission pressure of 5-15kPa, pressure change rate ≤ 1kPa/min, change rate ≤ 5%/min; Impurity particle size ≤ 5 μ m. Impurity content ≤ 30mg/Nm3, moisture content ≤ 40mg/Nm3, without free water, gas temperature ≤ 40 ℃, sulfur content ≤ 20mg/Nm3.

3.產品技術特點：

3. Product technical features:

（1）適應瓦斯氣體濃度范圍8%～30%，適合煤層氣氣源波動大的特點，能保證機組輸出功率持續恒定。

(1) Adapting to the gas concentration range of 8% to 30%, suitable for the characteristics of large fluctuations in coalbed methane gas sources, and able to ensure continuous and constant output power of the unit.

（2）低濃度瓦斯輸送系統，采用火焰冷壁熄滅阻火、濕式水封阻火、濕式水霧伴送等措施保障輸送安全，對于輸送距離較長的管系還可以采用混合細水霧伴送來應對。

(2) The low concentration gas transportation system adopts measures such as flame cold wall extinguishing to prevent fire, wet water seal to prevent fire, and wet water mist accompanying to ensure transportation safety. For pipeline systems with long transportation distances, mixed fine water mist accompanying can also be used to cope.

（3）采用電控混合器技術、閉環自動控制技術，可實現燃氣發動機空然比和點火提前角的實時控制，通過爆震監測實現點火提前角控制，使發動機工作在狀態，防止發動機出現爆燃、進氣管回火、排氣管放炮等問題。

 

(3) By using electronic mixer technology and closed-loop automatic control technology, real-time control of the optimal air fuel ratio and ignition advance angle of gas engines can be achieved. By monitoring detonation, the optimal ignition advance angle can be controlled to ensure that the engine operates at its optimal state and prevent problems such as detonation, intake pipe backfire, and exhaust pipe blasting.

（4）采用美國ALTRONIC公司生產的點火系統，以獲得高的點火能量和精確的點火時間，確保點火的安全可靠性。

(4) Adopting the ignition system produced by American ALTRONIC company to obtain high ignition energy and precise ignition time, ensuring the safety and reliability of ignition.

（5）發電機組的轉速低，降低發動機磨損，延長機件的使用壽命，減少備件的儲備；

(5) The low speed of the generator set reduces engine wear, prolongs the service life of the components, and reduces the reserve of spare parts;

（6）采用雙層水冷排氣管結構，排溫低，燃燒充分，各缸排溫均勻。

(6) Adopting a double-layer water-cooled exhaust pipe structure, the exhaust temperature is low, the combustion is sufficient, and the exhaust temperature of each cylinder is uniform.

（7）煤層氣發動機開發了燃氣發動機智能管理系統，能確保燃氣發動機安全、運行，并能實現燃氣發動機組的遠程監控。

(7) A gas engine intelligent management system has been developed for coalbed methane engines, which can ensure the safe and efficient operation of gas engines and achieve remote monitoring of gas engine groups.

4.低濃度瓦斯輸送系統具有如下安保功能：

4. The low concentration gas conveying system has the following security functions:

a. 濕式水封水位低報警和保護

a. Low water level alarm and protection for wet water seals

b. 濕式水封水位低自動補水

b. Automatic replenishment of low water level in wet water seals

c. 管道瓦斯濃度連續自動檢測和瓦斯濃度低報警

c. Continuous automatic detection of gas concentration in pipelines and low gas concentration alarm

d. 環境瓦斯濃度連續自動檢測和瓦斯濃度高報警

d. Continuous automatic detection of environmental gas concentration and alarm for high gas concentration

e. 瓦斯濃度超標斷電保護

e. Gas concentration exceeding standard, power outage protection

f. 主、備用水泵故障報警及自動切換保護

f. Main and backup water pump fault alarm and automatic switching protection

g. 循環水池水位低報警。

g. Low water level alarm in the circulating water tank.