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燃气发电机组的燃烧方式

来源:https://www.huannengpower.cn/ 文章作者:济柴环能 发布时间:2024-03-31

燃气发电机组顾名思义就是烧燃气的发电机组,分为内燃发电机组和燃气轮发电机组,他们都是以燃气作为燃料。燃气发电机组一般包括:发动机、发电机、控制器这几个部分组成,还有可选用装置稳压过滤装置、气液分离装置等,发动机与发电机同轴连接,并置于整机底盘上,再将消声器和调速器连接在发动机上,由燃气源通入发动机的燃气通道,连接在发动机上带拉绳的反冲起动器以及连接在发电机输出端的电压调节器,其中燃气源内置放的可燃气体是天然气或石油液化气或沼气。

Gas generator sets, as the name suggests, are generator sets that burn gas. They are divided into internal combustion generator sets and gas turbine generator sets, both of which use gas as fuel. A gas generator set generally consists of several parts: engine, generator, controller, and optional devices such as voltage stabilizing and filtering device, gas-liquid separation device, etc. The engine is coaxially connected to the generator and placed on the chassis of the whole machine. Then, the muffler and speed controller are connected to the engine, and the gas source is connected to the gas channel of the engine. The recoil starter with a pull rope is connected to the engine, and the voltage regulator is connected to the output end of the generator. The combustible gas stored in the gas source is natural gas, liquefied petroleum gas, or biogas.

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燃气发电机组的燃烧方式主要有以下几种:

The combustion methods of gas generator sets mainly include the following:

1、燃气发电机组的稀薄燃烧,混合气体中的燃气含量低,燃气燃料与空气之比可达1:25以上的发动机。这种发动机不足就是排放残留过多的氧,损失了动力,但优点是缸体内燃料的燃烧是充分的,并且氮氧化物排放量降低了。

1. The lean combustion of gas generator sets results in low gas content in the mixed gas, and the ratio of gas fuel to air can reach 1:25 or higher in engines. The deficiency of this type of engine is that it emits too much residual oxygen, losing power. However, the advantage is that the combustion of fuel in the cylinder is sufficient, and the emission of nitrogen oxides is reduced.

2、燃气发电机组的燃烧方式按化学计量燃烧:指可燃混合气中理论上可完全燃烧的实际含有的燃气量与空气量之比,是表示可燃混合气中燃料量与空气量配合比例的一个参数。当量比大于1,表示可燃混合气中所含实际空气量少于所必须的理论空气量,即空气量不足,燃烧效率随燃油当量比增加而下降,反之,当量比小于1,则表示可燃混合气中所含实际空气量超过所必需的理论空气量,即空气量过剩。当量比实际上就是过量空气系数的倒数。这种燃烧氮氧化物的排量高,温度也很高,高的时候可达到700摄氏度。

2. The combustion method of gas generator sets is stoichiometric combustion: it refers to the ratio of the actual amount of gas contained in the combustible mixture that can be completely combusted theoretically to the amount of air. It is a parameter that represents the proportion of fuel and air in the combustible mixture. If the equivalence ratio is greater than 1, it indicates that the actual air content in the combustible mixture is less than the necessary theoretical air content, that is, the air content is insufficient, and the combustion efficiency decreases with the increase of the fuel equivalence ratio. Conversely, if the equivalence ratio is less than 1, it indicates that the actual air content in the combustible mixture exceeds the necessary theoretical air content, that is, excess air content. The equivalence ratio is actually the reciprocal of the excess air coefficient. This type of combustion of nitrogen oxides has a high displacement and temperature, reaching up to 700 degrees Celsius at high temperatures.

3、燃气发电机组的富燃烧,所谓富燃烧就是燃料多,氧气相对说少一些,但是他的动力足,但由于在缸体内会燃烧不充分,会通过烟管排到外面来。优点是动力十足,燃料温度低,不足之处是一氧化碳排量多,燃料消耗高。

3. The rich combustion of gas generator sets refers to having more fuel and relatively less oxygen, but it has sufficient power. However, due to insufficient combustion in the cylinder, it will be discharged outside through smoke pipes. The advantages are full power, low fuel temperature, but the disadvantages are high carbon monoxide emissions and high fuel consumption.

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