1、拆下燃氣發電機組氣缸蓋，刮清氣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、拆下機體下窗口蓋板，轉動燃氣發電機組曲軸，將要拆下的活塞轉到上止點稍后的位置

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、拆下連桿螺釘時，注意用手托住連桿蓋，以防止墜入油底殼內，并防止碰傷軸瓦。

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、從連桿下端將燃氣發電機組活塞連桿往上推，自氣缸套上口沿氣缸中心線取出活塞連桿，取出時嚴防連桿碰傷氣缸套內壁。

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、將活塞放在機油內加熱至100~200°C，取出活塞銷。拆卸燃氣發電機組活塞后，把連桿軸瓦、連桿蓋和連桿螺釘仍裝到相應的連桿體上，并進行清洗和檢查配合面的磨耗情況或更換損壞的零件。

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.

燃氣發電技術成熟的工藝有：燃氣輪機發電、蒸氣輪機發電、燃氣內燃機發電，下面針對三種發電方式進行比較。

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.蒸汽輪機發電：

1. Steam turbine power generation:

這是一個非常傳統的技術，也是大家比較熟悉的工藝方式。它是采用鍋爐來直接燃燒燃氣，將燃氣的熱能通過鍋爐內的管束把水轉換為蒸汽，利用蒸汽推動蒸汽輪機再驅動發電機發電。系統的主要設備是燃氣燃燒器、鍋爐本體、化學水系統、給水系統、蒸汽輪機、冷凝器、冷卻塔、發動機、變壓器和控制系燃氣發電機組統，工藝流程比較復雜。

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.

蒸汽輪機發電機組運行熱效率較低，但運行可靠、機組壽命長、燃氣不需特殊的凈化處理是其優點。它所需要的是對鍋爐用水的軟化處理，鍋爐房較大的土建投資加大了土建投資。只有當產氣量特別大，且供氣年限長的情況下，才選擇汽輪機發電。

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.

優點是：

The advantages are:

對于燃料氣體品質要求比較低，只要燃氣燃燒器能夠承受的氣體，一般都可以適應，燃氣只需要有限的壓力，因而燃氣處理系統投資比較簡單。

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.

缺點是：

The disadvantage is:

工藝復雜，建設周期比較長，難以再移動，必須消耗大量的水資源，占地比較多，管理人員也比較多，小機組能源利用效率太低，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.燃氣輪機發電：

2. Gas turbine power generation:

從工作原理上看，燃氣輪機無疑是適合燃氣利用的工藝技術之一。燃氣輪機是從飛機噴氣式發動機的技術演變而來的，它通過壓氣機渦輪將空氣壓縮，高壓空氣在燃燒室與燃料混合燃燒，是空氣急劇膨脹做功，推動動力渦輪旋轉做功驅動發電機發電，因為是旋轉持續做功，可以利用熱值比較低的燃料氣體。燃氣輪機自身的發電效率不算很高，大功率的一般在30％～35％之間，小功率（單機功率4000KW）的一般低于24％，但是產生的廢熱煙氣溫度高達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 ℃.

燃氣輪機是常用的燃氣動力機械。沼氣發電機組其優點是運行可靠，燃料混合氣在燃氣輪機的燃燒室里燃燒，利用渦輪機動力驅動，帶動發電機發電；結構簡單、緊湊，較小功率的整套機組可以裝在一個大型集裝箱內；比之燃煤或燃氣鍋爐占地少，節省基建投資。

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.

燃氣輪機特點是：

The characteristics of gas turbines are:

1.重量輕、體積小。燃氣輪機電廠的金屬消耗量約為同功率汽輪機電廠的1/3-1/5，因此基建投資省，建設周期短。

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、電潤滑油消耗少。燃氣輪機耗水少，甚至可以不用水，廠自用水也很少，許多機組可以無電源起動，潤滑油消耗量也比汽輪機或內燃機少得多。因此，適用于缺水、缺電的地區。

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.起動快、自動化程度高。工業燃氣輪機從冷態啟動、加速，直至帶上滿負荷，一般只需3-15分鐘。現代燃氣輪機多數已應用微機控制，可以程序起動或停機，集中控制或遙控，運行維修方便，甚至可以無人運行。

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.可以綜合利用余熱，大幅度提高能源利用率。現在燃氣輪機的排氣溫度一般為450-600℃，加之排氣流量比較大，蘊含著大量適合綜合利用的優質能源，如加裝余熱鍋爐，組成燃氣-蒸汽聯合循環，則總功率可以增加1/3-1/2，也可以實現熱電聯供或熱電冷三聯供，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.燃氣內燃機發電：

3. Gas internal combustion engine power generation:

世界上第一臺內燃機就是以天然氣發電機組煤氣為燃料的內燃機，1876年德國商人兼機械師奧托發明了人類第一臺以煤氣為燃料的四沖程內燃機，經過10年的不斷改進之后，德國的另一個機械師“奔馳汽車之父”戴姆勒?本茨才將這種四沖程發動機改進為汽油發動機，直到1895年狄塞爾才發明出柴油機。燃氣內燃機的工作原理基本與汽車發動機無異，需要火花塞點火，由于內燃機氣缸內的核心區域工作溫度可以達到1400℃，使其效率大大超過了蒸汽輪機和燃氣輪機。燃氣內燃機的發電效率通常在30％－40％之間，比較常見的機型一般可以達到35％。像小功率的沼氣發電機組，瓦斯發電機組，天然氣發電機組等燃氣發電機組采用內燃機的比較常見。

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.