Introduction to 300 Low Concentration Gas Generator Set

8300低浓度瓦斯发电机组是在8300高浓度瓦斯发电机组基础上开发的，主要适用于8％～30％浓度范围内的混合瓦斯气体。

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. 使用条件：

2. Service conditions:

低浓度瓦斯气源条件：低浓度瓦斯气输送压力5～15kPa，压力变化率≤1kPa/min，变化速率≤5％/min；杂质粒度≤5μm，杂质含量≤30mg/Nm3, 水分含量≤40mg/Nm3，不含游离水，煤气温度≤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.产品技术特点：

3. Product technical features:

（1）适应瓦斯气体浓度范围8%～30%，适合煤层气气源波动大的特点，能保证机组输出功率持续恒定。

(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）低浓度瓦斯输送系统，采用火焰冷壁熄灭阻火、湿式水封阻火、湿式水雾伴送等措施保障输送安全，对于输送距离较长的管系还可以采用混合细水雾伴送来应对。

(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）采用电控混合器技术、闭环自动控制技术，可实现燃气发动机空然比和点火提前角的实时控制，通过爆震监测实现点火提前角控制，使发动机工作在状态，防止发动机出现爆燃、进气管回火、排气管放炮等问题。

 

(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）采用美国ALTRONIC公司生产的点火系统，以获得高的点火能量和精确的点火时间，确保点火的安全可靠性。

(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）发电机组的转速低，降低发动机磨损，延长机件的使用寿命，减少备件的储备；

(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）采用双层水冷排气管结构，排温低，燃烧充分，各缸排温均匀。

(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）煤层气发动机开发了燃气发动机智能管理系统，能确保燃气发动机安全、运行，并能实现燃气发动机组的远程监控。

(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.低浓度瓦斯输送系统具有如下安保功能：

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

a. 湿式水封水位低报警和保护

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

b. 湿式水封水位低自动补水

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

c. 管道瓦斯浓度连续自动检测和瓦斯浓度低报警

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

d. 环境瓦斯浓度连续自动检测和瓦斯浓度高报警

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

e. 瓦斯浓度超标断电保护

e. Gas concentration exceeding standard, power outage protection

f. 主、备用水泵故障报警及自动切换保护

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

g. 循环水池水位低报警。

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