静音发电机组在前期生产后期的安装中有很多需要注意的地方。静音发电机组除具备系列柴油发电机组各项功能外，还具备以下特点：机组噪音低，总体机构紧凑，占用空间小；箱体全部为可拆卸式结构，箱体采用钢板拼接而成，表面涂有高性能防锈漆，同时具备降噪和防雨功能；箱体内部采用多层屏障阻抗错配式消声结构、内置式大型阻抗式消音器。箱体结构设计合理，箱体内部设有大容量油箱，左右同时设有两扇检修门，以便机组故障检修；同时在箱体上开有观察窗和机组紧急停机故障按钮，以便观察机组的运行情况及在机组出现紧急情况时以最快的速度停机避免机组受到损坏。今天我们谈谈静音发电机组在消音器的选择上，以及后期几个系统设置要求。

There are many things to pay attention to during the installation of silent generator sets in the early and later stages of production. The silent generator set not only has various functions of a series of diesel generator sets, but also has the following characteristics: low unit noise, compact overall structure, and small space occupation; The entire box body is a detachable structure, made of steel plates spliced together and coated with high-performance anti rust paint on the surface, while also having noise reduction and rain protection functions; The interior of the box adopts a multi-layer barrier impedance mismatch type noise reduction structure and a built-in large impedance type muffler. The box structure is designed reasonably, with a large capacity oil tank inside the box and two maintenance doors on both sides for easy maintenance of unit faults; At the same time, there is an observation window and an emergency stop button on the box to observe the operation of the unit and to stop the unit as quickly as possible in case of emergency to avoid damage to the unit. Today we will talk about the selection of silencers for silent generator sets and several system settings requirements in the later stage.

1、噪音水平

1. Noise level

柴油发电机组产生的噪音应能有效地衰减，以满足当地法规及安装地的要求。可通过正确地选择消音器来实现：

The noise generated by diesel generator sets should be effectively attenuated to meet local regulations and installation requirements. It can be achieved by selecting the muffler correctly:

工业型：  可衰减12至18dBA

Industrial type: can attenuate 12 to 18dBA

住宅型：  可衰减18至25dBA

Residential type: can attenuate 18 to 25dBA

临界型：  可衰减25至35dBA

Critical type: can attenuate 25 to 35dBA

2、排烟系统设置

2. Smoke exhaust system settings

尽可能降低排烟系统的背压值。过高的背压会负面影响燃烧效率，增加排气温度,从而导致发动机功率损失，缩短其工作寿命。因此，应尽量缩短烟管长度，减少弯头个数，减少消音器阻力及增大烟管直径。

Try to reduce the back pressure value of the smoke exhaust system as much as possible. Excessive back pressure can negatively affect combustion efficiency, increase exhaust temperature, and lead to engine power loss, shortening its working life. Therefore, the length of the smoke pipe should be shortened as much as possible, the number of bends should be reduced, the resistance of the muffler should be reduced, and the diameter of the smoke pipe should be increased.

3、排烟出口定位

3. Smoke exhaust outlet positioning

最方便的出口并非最佳的位置，设计师应综合考虑风向、建筑物设计、布局、距离及排烟流速等因素。应避免排烟进入任何重要的鲜风入口（窗、门、进风口、柴油发电机组燃烧新鲜空气入口、柴油发电机组冷却通风入口等），防止新鲜空气遭受排烟的污染；还应减少烟囱噪音对工人及邻里的影响以及排烟中含带的粉尘在相邻建筑上的堆积。

The most convenient exit is not the optimal location, and designers should consider factors such as wind direction, building design, layout, distance, and smoke exhaust flow rate comprehensively. Smoke exhaust should be avoided from entering any important fresh air inlet (windows, doors, air intakes, fresh air inlet for diesel generator set combustion, cooling and ventilation inlet for diesel generator set, etc.) to prevent fresh air from being contaminated by smoke exhaust; It is also necessary to reduce the impact of chimney noise on workers and neighbors, as well as the accumulation of dust contained in smoke exhaust on adjacent buildings.

4、管路设计

4. Pipeline design

所有的排烟管路应得以良好支撑和固定。

All smoke exhaust pipes should be well supported and fixed.

无支撑的消音器不能安装在柴油发电机组排烟歧管或柴油发电机组增压器出口处。

Unsupported silencers cannot be installed at the exhaust manifold or turbocharger outlet of diesel generator sets.

烟管与柴油发电机组之间应安装软连接，以吸收管道的热胀冷缩、机组的位移及振动，减少烟管对机组及烟管之间的重压；软连接应尽可能靠近机组排烟出口（增压器或排气歧管）。

A soft connection should be installed between the smoke pipe and the diesel generator set to absorb the thermal expansion and contraction of the pipeline, the displacement and vibration of the unit, and reduce the heavy pressure of the smoke pipe on the unit and between the smoke pipes; The soft connection should be as close as possible to the exhaust outlet of the unit (turbocharger or exhaust manifold).

排烟终端应安装防雨帽、遮盖物及其它防雨设计以防止雨雪进入。接近机组的烟管部分应安装有冷凝水收集器及排水阀。

Smoke exhaust terminals should be equipped with rain caps, covers, and other rainproof designs to prevent rain and snow from entering. The smoke pipe near the unit should be equipped with a condensate collector and drainage valve.

建议机组不与火炉、锅炉或者其它设备共用排烟管道。运行中设备排放的炭尘、冷凝物的堆积会对非运行机组造成损害，被动驱动的增压器因缺乏润滑将导致轴承故障。

It is recommended that the unit does not share smoke exhaust pipes with furnaces, boilers, or other equipment. The accumulation of carbon dust and condensate emitted by equipment during operation can cause damage to non operating units, and passive driven boosters may cause bearing failures due to lack of lubrication.

5、长度

5. Length

尽可能缩短排烟系统长度，从而减少系统的阻力（背压），更利于 烟气排放；减少气体冷凝机会，降低烟气程度。

Shorten the length of the smoke exhaust system as much as possible to reduce the resistance (back pressure) of the system, which is more conducive to smoke emission; Reduce the chance of gas condensation and reduce the degree of smoke.