1、拆下燃气发电机组气缸盖，刮清气缸套上部的炭灰和油污。

1. Remove the cylinder head of the gas generator set and scrape off the carbon ash and oil stains on the upper part of the cylinder liner.

2、拆下机体下窗口盖板，转动燃气发电机组曲轴，将要拆下的活塞转到上止点稍后的位置

2. Remove the cover plate of the lower window of the engine body, rotate the crankshaft of the gas generator set, and turn the piston to be removed to a position later than the top dead center

3、拆下连杆螺钉时，注意用手托住连杆盖，以防止坠入油底壳内，并防止碰伤轴瓦。

3. When removing the connecting rod screws, be careful to hold the connecting rod cap with your hands to prevent it from falling into the oil pan and damaging the bearing shells.

4、从连杆下端将燃气发电机组活塞连杆往上推，自气缸套上口沿气缸中心线取出活塞连杆，取出时严防连杆碰伤气缸套内壁。

4. Push the piston connecting rod of the gas generator set upwards from the lower end of the connecting rod, and take out the piston connecting rod from the upper port of the cylinder sleeve along the centerline of the cylinder. When taking out, be careful not to damage the inner wall of the cylinder sleeve by the connecting rod.

5、将活塞放在机油内加热至100~200°C，取出活塞销。拆卸燃气发电机组活塞后，把连杆轴瓦、连杆盖和连杆螺钉仍装到相应的连杆体上，并进行清洗和检查配合面的磨耗情况或更换损坏的零件。

5. Heat the piston in engine oil to 100-200 ° C and remove the piston pin. After disassembling the piston of the gas generator set, install the connecting rod bearing shells, connecting rod caps, and connecting rod screws onto the corresponding connecting rod body, and clean and inspect the wear of the mating surface or replace damaged parts.

燃气发电技术成熟的工艺有：燃气轮机发电、蒸气轮机发电、燃气内燃机发电，下面针对三种发电方式进行比较。

The mature processes of gas power generation technology include gas turbine power generation, steam turbine power generation, and gas internal combustion engine power generation. Below, we will compare the three power generation methods.

1.蒸汽轮机发电：

1. Steam turbine power generation:

这是一个非常传统的技术，也是大家比较熟悉的工艺方式。它是采用锅炉来直接燃烧燃气，将燃气的热能通过锅炉内的管束把水转换为蒸汽，利用蒸汽推动蒸汽轮机再驱动发电机发电。系统的主要设备是燃气燃烧器、锅炉本体、化学水系统、给水系统、蒸汽轮机、冷凝器、冷却塔、发动机、变压器和控制系燃气发电机组统，工艺流程比较复杂。

This is a very traditional technology and a familiar process method. It uses a boiler to directly burn gas, converting the heat energy of the gas into steam through the tube bundle inside the boiler. The steam is then used to drive the steam turbine and then drive the generator to generate electricity. The main equipment of the system is a gas burner, boiler body, chemical water system, feedwater system, steam turbine, condenser, cooling tower, engine, transformer, and control system gas generator system, and the process flow is relatively complex.

蒸汽轮机发电机组运行热效率较低，但运行可靠、机组寿命长、燃气不需特殊的净化处理是其优点。它所需要的是对锅炉用水的软化处理，锅炉房较大的土建投资加大了土建投资。只有当产气量特别大，且供气年限长的情况下，才选择汽轮机发电。

The thermal efficiency of steam turbine generator units is relatively low, but their advantages include reliable operation, long unit life, and no need for special purification treatment of gas. What it requires is the softening treatment of boiler water, and the larger civil construction investment in the boiler room has increased the civil construction investment. Only when the gas production is particularly large and the gas supply period is long, steam turbine power generation is chosen.

优点是：

The advantages are:

对于燃料气体品质要求比较低，只要燃气燃烧器能够承受的气体，一般都可以适应，燃气只需要有限的压力，因而燃气处理系统投资比较简单。

For fuel gas, the quality requirements are relatively low. As long as the gas burner can withstand the gas, it can generally adapt. Gas only requires limited pressure, so the investment in gas treatment systems is relatively simple.

缺点是：

The disadvantage is:

工艺复杂，建设周期比较长，难以再移动，必须消耗大量的水资源，占地比较多，管理人员也比较多，小机组能源利用效率太低，通常不到15％。

The process is complex, the construction period is relatively long, and it is difficult to move again. It requires a large amount of water resources, occupies a large area, and has many management personnel. The energy utilization efficiency of small units is too low, usually less than 15%.

2.燃气轮机发电：

2. Gas turbine power generation:

从工作原理上看，燃气轮机无疑是适合燃气利用的工艺技术之一。燃气轮机是从飞机喷气式发动机的技术演变而来的，它通过压气机涡轮将空气压缩，高压空气在燃烧室与燃料混合燃烧，是空气急剧膨胀做功，推动动力涡轮旋转做功驱动发电机发电，因为是旋转持续做功，可以利用热值比较低的燃料气体。燃气轮机自身的发电效率不算很高，大功率的一般在30％～35％之间，小功率（单机功率4000KW）的一般低于24％，但是产生的废热烟气温度高达450～550℃。

From the perspective of working principle, gas turbine is undoubtedly one of the suitable process technologies for gas utilization. Gas turbine is an evolution of aircraft jet engine technology. It compresses air through a compressor turbine, and high-pressure air mixes with fuel in the combustion chamber for combustion. The air rapidly expands to do work, driving the power turbine to rotate and drive the generator to generate electricity. Because it continues to do work, it can utilize fuel gases with lower calorific values. The power generation efficiency of gas turbines themselves is not very high, with high-power ones generally between 30% and 35%, and low-power ones (with a single unit power of 4000KW) generally below 24%. However, the generated waste heat flue gas temperature can reach as high as 450-550 ℃.

燃气轮机是常用的燃气动力机械。沼气发电机组其优点是运行可靠，燃料混合气在燃气轮机的燃烧室里燃烧，利用涡轮机动力驱动，带动发电机发电；结构简单、紧凑，较小功率的整套机组可以装在一个大型集装箱内；比之燃煤或燃气锅炉占地少，节省基建投资。

Gas turbines are commonly used gas powered machinery. The advantage of a biogas generator set is its reliable operation. The fuel mixture is burned in the combustion chamber of the gas turbine, and the turbine power is used to drive the generator to generate electricity; The structure is simple and compact, and a small power unit can be installed in a large container; Compared to coal-fired or gas boilers, it occupies less land and saves infrastructure investment.

燃气轮机特点是：

The characteristics of gas turbines are:

1.重量轻、体积小。燃气轮机电厂的金属消耗量约为同功率汽轮机电厂的1/3-1/5，因此基建投资省，建设周期短。

1. Lightweight and small in size. The metal consumption of gas turbine electromechanical plants is about 1/3-1/5 of that of steam turbine electromechanical plants of the same power, so the infrastructure investment is low and the construction period is short.

2.水、电润滑油消耗少。燃气轮机耗水极少，甚至可以不用水，厂自用水也很少，许多机组可以无电源起动，润滑油消耗量也比汽轮机或内燃机少得多。因此，适用于缺水、缺电的地区。

2. Low consumption of water and electric lubricating oil. Gas turbines consume very little water, and can even be used without water. The water used by the factory is also very small. Many units can start without power, and the consumption of lubricating oil is much less than that of steam turbines or internal combustion engines. Therefore, it is suitable for areas lacking water and electricity.

3.起动快、自动化程度高。工业燃气轮机从冷态启动、加速，直至带上满负荷，一般只需3-15分钟。现代燃气轮机多数已应用微机控制，可以程序起动或停机，集中控制或遥控，运行维修方便，甚至可以无人运行。

3. Fast start-up and high degree of automation. Industrial gas turbines typically only take 3-15 minutes from cold start, acceleration, to full load. Most modern gas turbines have been controlled by microcomputers, which can be programmed to start or stop, centrally controlled or remotely controlled, making them easy to operate and maintain, and even capable of unmanned operation.

4.可以综合利用余热，大幅度提高能源利用率。现在燃气轮机的排气温度一般为450-600℃，加之排气流量比较大，蕴含着大量适合综合利用的优质能源，如加装余热锅炉，组成燃气-蒸汽联合循环，则总功率可以增加1/3-1/2，也可以实现热电联供或热电冷三联供，使能源利用率提高到80％以上。

4. It can comprehensively utilize waste heat and significantly improve energy utilization efficiency. Nowadays, the exhaust temperature of gas turbines is generally between 450-600 ℃, and with a relatively large exhaust flow rate, it contains a large amount of high-quality energy suitable for comprehensive utilization. For example, installing a waste heat boiler to form a gas steam combined cycle can increase the total power by one-third to half, and can also achieve cogeneration or cogeneration, increasing the energy utilization rate to over 80%.

3.燃气内燃机发电：

3. Gas internal combustion engine power generation:

世界上第一台内燃机就是以天然气发电机组煤气为燃料的内燃机，1876年德国商人兼机械师奥托发明了人类第一台以煤气为燃料的四冲程内燃机，经过10年的不断改进之后，德国的另一个机械师“奔驰汽车之父”戴姆勒?本茨才将这种四冲程发动机改进为汽油发动机，直到1895年狄塞尔才发明出柴油机。燃气内燃机的工作原理基本与汽车发动机无异，需要火花塞点火，由于内燃机气缸内的核心区域工作温度可以达到1400℃，使其效率大大超过了蒸汽轮机和燃气轮机。燃气内燃机的发电效率通常在30％－40％之间，比较常见的机型一般可以达到35％。像小功率的沼气发电机组，瓦斯发电机组，天然气发电机组等燃气发电机组采用内燃机的比较常见。

The world's first internal combustion engine was one that used natural gas as fuel for a generator set. In 1876, German businessman and mechanic Otto invented the first four stroke internal combustion engine that used gas as fuel. After 10 years of continuous improvement, another German mechanic, Daimler, became known as the father of Mercedes Benz cars? Benz improved this four stroke engine to a gasoline engine, and it was not until 1895 that Diesel was invented. The working principle of gas internal combustion engines is basically the same as that of automotive engines, requiring spark plug ignition. Due to the working temperature of the core area in the cylinder of the internal combustion engine reaching 1400 ℃, its efficiency greatly exceeds that of steam and gas turbines. The power generation efficiency of gas internal combustion engines is usually between 30% and 40%, and common models can generally reach 35%. It is common for gas generators such as low-power biogas generators, gas generators, and natural gas generators to use internal combustion engines.