我国低浓度焦炉煤气的储量较多，其可应用到发电机组中，实际发电机组技术在运用低浓度焦炉煤气时，为了提高低浓度焦炉煤气在发电机组中的运用效率,提出了安全、稳定的要求。低浓度焦炉煤气的利用率非常高,根据发电机组的需求,采用高效的技术，完善发电机组的运行。

　　There are abundant reserves of low concentration coke oven gas in China, which can be applied to power generation units. In actual power generation unit technology, in order to improve the efficiency of using low concentration coke oven gas in power generation units, safety and stability requirements have been put forward. The utilization rate of low concentration coke oven gas is very high. According to the needs of the generator set, efficient technology is adopted to improve the operation of the generator set.

　　1低浓度焦炉煤气发电机组的设计原理

　　Design principle of low concentration coke oven gas generator set

　　低浓度焦炉煤气是指浓度在30%以内的瓦斯燃料,其在发电机组中的运用,利用电控燃气混合器技术,同时配合自动控制的空燃比,确保低浓度焦炉煤气的实际浓度能够适应发电机组的运行"。低浓度焦炉煤气发电机组的机械原理，主要是设计安全的输送系统,保障瓦斯从地下到地面的安全性,为发电机组提供低浓度焦炉煤气燃料，低浓度焦炉煤气要具有良性循环的优势,提高发电机组的经济效益，2低浓度焦炉煤气发电机组的技术内容

　　Low concentration coke oven gas refers to gas fuel with a concentration of less than 30%, which is used in power generation units through the use of electrically controlled gas mixer technology and automatic control of air-fuel ratio to ensure that the actual concentration of low concentration coke oven gas can adapt to the operation of the power generation unit. The mechanical principle of low concentration coke oven gas power generation units is mainly to design a safe transportation system to ensure the safety of gas from underground to ground, providing low concentration coke oven gas fuel for the power generation unit. Low concentration coke oven gas should have the advantage of virtuous cycle, improve the economic benefits of the power generation unit, and the technical content of low concentration coke oven gas power generation units

　　2.1燃气供给

　　2.1 Gas supply

　　发电机组中的燃气供给技术,是指把低浓度焦炉煤气经过处理后,在输送到发动机的燃烧室内。燃气供给时,需要根据发动机的运行工况,灵活调整燃气供给量,以便满足发电机组的运行需求团。在发电机组的燃气供给技术中，低浓度焦炉煤气到燃烧室的过程中,涉及到很多重要的设备,如电磁阀、电动蝶阀、球阀、混合器、燃气管路等,各项配件的安装应用直接关系到燃气供给的效率。针对燃气供给技术,提出几点注意事项:第一,低浓度焦炉煤气发电机组中,阀门的安装要遵循气流箭头的指示,不能有反接的情况;第二，清洁燃气供给的管道内壁,不能有杂物干扰;第三,燃气供给管路及设备安装后，全面检查系统的运输效果,预防渗漏,保护发电机组的燃气供给部分。

　　The gas supply technology in the generator set refers to the treatment of low concentration coke oven gas and its transportation to the combustion chamber of the engine. When supplying gas, it is necessary to flexibly adjust the gas supply amount according to the operating conditions of the engine in order to meet the operational needs of the generator set. In the gas supply technology of generator sets, the process of low concentration coke oven gas to the combustion chamber involves many important equipment, such as solenoid valves, electric butterfly valves, ball valves, mixers, gas pipelines, etc. The installation and application of various accessories directly affect the efficiency of gas supply. Regarding gas supply technology, several precautions are proposed: firstly, in low concentration coke oven gas generator sets, the installation of valves should follow the indication of the airflow arrow and there should be no reverse connection; Secondly, clean the inner wall of the gas supply pipeline and ensure that there are no impurities interfering with it; Thirdly, after the installation of gas supply pipelines and equipment, a comprehensive inspection of the transportation efficiency of the system should be conducted to prevent leakage and protect the gas supply part of the generator set.

　　2.2 润滑技术

　　2.2 Lubrication Technology

　　低浓度焦炉煤气发电机组的润滑技术。提高了机组运行的水平。润滑系统中，润滑结构占有重要比重,根据发电机组的特征,低浓机采用润滑型式为片力、飞溅复合式润滑,该系统主要由机油泵、预供油泵、机油滤清器、离心滤清器、各种调节阀类和润滑管路等部件组成。利用气配备的外置机油泵将润滑油送至主油道,然后至齿轮系、曲轴轴承、凸轮轴轴承、摇臂轴等处,使机组各部位均得到充分的润滑，在运行过程中要随时检测机组运行油压以保证机组安全稳定运行。

　　Lubrication technology for low concentration coke oven gas generator set. Improved the level of unit operation. In the lubrication system, the lubrication structure occupies an important proportion. According to the characteristics of the generator set, the low concentration machine adopts a lubrication type of sheet force and splash composite lubrication. The system is mainly composed of oil pump, pre supply oil pump, oil filter, centrifugal filter, various regulating valves and lubrication pipelines. The external oil pump equipped with gas is used to send lubricating oil to the main oil passage, and then to the gear system, crankshaft bearings, camshaft bearings, rocker arm shafts, etc., so that all parts of the unit are fully lubricated. During operation, the operating oil pressure of the unit should be monitored at all times to ensure safe and stable operation of the unit.

　　2.3冷却技术

　　2.3 Cooling Technology

　　低浓度焦炉煤气发电机组运行时，采用了循环冷却系统,通过开式的方法,循环高温和低温条件,达到冷却发电机组的目的国。例举发电机组冷却系统中的技术,如:高温循环冷却技术。发电机组的右侧水道,承接高温冷却装置中的水,利用齿轮系结构带动水泵运输到左侧水道中，再排人到发电机组的机体中,此时冷却水会流经气缸外部,由串水管排到气缸盖的水腔中,完成了高温循环冷却水的循环过程:低温循环冷却技术。从低温水泵到冷却装置,属于开式循环的过程。低温冷却技术具有灵活性的特征,用户可根据发电机组的实际情况，调整低温循环冷却操作,提高冷却效率。

　　During the operation of the low concentration coke oven gas generator unit, a circulating cooling system is used to circulate high and low temperature conditions through an open method, achieving the goal of cooling the generator unit. Provide examples of technologies used in the cooling system of generator sets, such as high-temperature circulating cooling technology. The right water channel of the generator set receives water from the high-temperature cooling device, and uses a gear train structure to drive the water pump to transport it to the left water channel, and then discharges it into the body of the generator set. At this time, the cooling water will flow outside the cylinder and be discharged into the water chamber of the cylinder head through the water pipe, completing the circulation process of high-temperature circulating cooling water: low-temperature circulating cooling technology. The process from the low-temperature water pump to the cooling device belongs to an open cycle. Low temperature cooling technology has the characteristic of flexibility, and users can adjust the low-temperature circulation cooling operation according to the actual situation of the generator set to improve cooling efficiency.

　　2.4起动技术

　　2.4 Starting Technology

　　起动技术在低浓度焦炉煤气发电机组中主要采用了电动马达起动系统,专门配置启动柜转换直流电.提供起动的能源,安装了电动马达、蓄电池、起动继电器、开关等设备,完善发电机组的起动系统。低浓度焦炉煤气发电机组的起动技术上，注意电动马达的维护及养护。起动时,连续时间最好不要超过5s,且.空载状态下禁止运行电动马达，定期检查电动马达及周围系统的接线情况,做好清洁工作,维护起动系统的运行性能。发电机组起动前,检查电源的供电情况电压不低于22V。发电机组在运行期间,注意起动开关的保护，禁止打开，防止发生误动的危险情况,全面保护起动系统的运行。

　　The starting technology in low concentration coke oven gas generator sets mainly adopts an electric motor starting system, which is specially equipped with a starting cabinet to convert DC power Providing starting energy, installing electric motors, batteries, starting relays, switches, and other equipment to improve the starting system of the generator set. In terms of starting technology for low concentration coke oven gas generator units, attention should be paid to the maintenance and upkeep of the electric motor. When starting, it is best not to exceed a continuous time of 5 seconds, and Do not operate the electric motor under no-load conditions. Regularly check the wiring of the electric motor and surrounding systems, perform cleaning work, and maintain the operational performance of the starting system. Before starting the generator set, check the power supply status and ensure that the voltage is not lower than 22V. During the operation of the generator set, pay attention to the protection of the starting switch and prohibit it from being turned on to prevent dangerous situations of misoperation and fully protect the operation of the starting system.

　　2.5 点火技术

　　2.5 Ignition Technology

　　低浓度焦炉煤气发电机组的点火操作原理是:发电机组上安装的霍尔传感器，获取对应定时盘上磁钉的信号，根据发动机点火的顺序，驱动点火器运行,顺着低压线、点火线圈、高压线,把点火信号传送到火花塞处,在气缸内完成点火。其中,应控制好点火控制器、信号传感器,提高点火信息的传输效率连接点火系统中的低压线时应注意区分颜色，对照领色连接好点火线圈,拧紧连接线的螺母,低压输出线的电压范围,控制在24V上下。高压线方面,应注意在点火期间,禁止随意拔插高压线。发电机组运行一段时间后，要检查点火系统中的火花塞并拆卸火花塞进行检查,及时更换老化、破损的火花塞。

　　The ignition operation principle of the low concentration coke oven gas generator set is: the Hall sensor installed on the generator set obtains the signal of the magnetic pin on the corresponding timing plate, drives the igniter to run according to the ignition sequence of the engine, and transmits the ignition signal to the spark plug along the low voltage line, ignition coil, and high voltage line, completing the ignition in the cylinder. Among them, the ignition controller and signal sensor should be well controlled to improve the transmission efficiency of ignition information. When connecting the low-voltage wires in the ignition system, attention should be paid to distinguishing colors, connecting the ignition coil according to the color, tightening the nut of the connecting wire, and controlling the voltage range of the low-voltage output wire to around 24V. In terms of high-voltage wires, it should be noted that during ignition, it is forbidden to randomly plug and unplug high-voltage wires. After the generator set has been running for a period of time, it is necessary to check the spark plugs in the ignition system and remove them for inspection. Aging or damaged spark plugs should be replaced in a timely manner.

　　2.6控制技术

　　2.6 Control Technology

　　发电机组的控制,是指在低浓度焦炉煤气使用前,对整个发电机组进行调试操作。低浓度焦炉煤气发电机组运行期间,不能随意调整各项系统及结构,所以只能在运行前,实行有效的调试控制,降低运行故障的发生机率,同时提高发电机组的运行精度。例如:专门设置了安全保护.当发电机组有超速情况时,整体停机.以此来保护发电机组.发电机组在允许的安全范围中启动，现场的故障信息直接传输到控制中心,且对于发电机组的内部故障,以代码闪烁的方式提醒,起到预警作用

　　The control of the generator set refers to the debugging operation of the entire generator set before the use of low concentration coke oven gas. During the operation of low concentration coke oven gas generator units, various systems and structures cannot be adjusted arbitrarily. Therefore, effective debugging and control can only be implemented before operation to reduce the probability of operational failures and improve the operational accuracy of the generator units. For example, security protection has been specifically set up When the generator set experiences overspeed, it will shut down as a whole To protect the generator set The generator set is started within the allowable safety range, and the on-site fault information is directly transmitted to the control center. For internal faults of the generator set, a flashing code is used to remind and play a warning role

　　3低浓度焦炉煤气发电机组的有效运用

　　Effective application of 3 low concentration coke oven gas generator sets

　　低浓度性层发由机组的运用，重占体现在发由设备和发电工艺两个方面,结合发电机组的案例,做如下分析。

　　The application of low concentration layer power generation units is reflected in two aspects: power generation equipment and power generation technology. Based on the case of power generation units, the following analysis is made.

　　3.1发电设备的配套原则

　　3.1 Supporting principles for power generation equipment

　　低浓度焦炉煤气燃料对发电机组的设备有明确的要求,从燃料发电的稳定性和安全性角度出发,提出配套的要求，也就是发电机组的发电设备要遵循配套的原则，积极提升发电机组中低浓度焦炉煤气燃料的压力。发电设备使用期间,注意防爆防火的安全措施,例如:低浓度焦炉煤气发电机组中的内燃气的燃烧为密封的燃烧过程。此项设备可以根据低浓度焦炉煤气的产量,设置运行方式,在不同的发电煤矿中,均能满足发电机组的需求。

　　Low concentration coke oven gas fuel has clear requirements for the equipment of the generator set. From the perspective of stability and safety of fuel power generation, matching requirements are proposed, which means that the power generation equipment of the generator set should follow the principle of matching and actively improve the pressure of low concentration coke oven gas fuel in the generator set. During the use of power generation equipment, pay attention to safety measures for explosion and fire prevention, such as the sealed combustion process of internal gas in low concentration coke oven gas generator sets. This equipment can set its operation mode according to the production of low concentration coke oven gas, and can meet the needs of power generation units in different coal mines.

　　3.2发电工艺

　　3.2 Power generation process

　　焦炉煤气发电机组发电机组工艺中，比较常见的有燃气内燃机发电、燃气汽轮机发电与燃气锅炉带蒸汽轮机发电。现阶段,燃气内燃机发电的运用逐渐广泛,在低浓度焦炉煤气的抽取过程中,浓度变化明显，浓度会引起发电波动的问题,采用燃气内燃机.可保障低浓度焦炉煤气的燃烧效率，有效的提高了发电机组的运用效率,即使焦炉煤气浓度波动,也能维持较高的燃烧效率,表明燃气内燃机的节能及环保特征。4结语

　　In the process of coke oven gas generator set, the more common ones are gas internal combustion engine power generation, gas turbine power generation, and gas boiler with steam turbine power generation. At present, the use of gas internal combustion engines for power generation is gradually becoming widespread. In the extraction process of low concentration coke oven gas, the concentration changes significantly, which can cause fluctuations in power generation. Therefore, gas internal combustion engines are adopted It can ensure the combustion efficiency of low concentration coke oven gas and effectively improve the operating efficiency of the generator set. Even if the concentration of coke oven gas fluctuates, it can maintain a high combustion efficiency, indicating the energy-saving and environmental protection characteristics of gas internal combustion engines. 4 Conclusion

　　低浓度焦炉煤气发电机组的市场占有率逐渐提高,由于此类发电机组的机械性能强,所以应积极推进低浓度焦炉煤气的使用,改善发电机组的运行,维护发电机组的安全与稳定，全面体现出低浓度焦炉煤气的高效作用。

　　The market share of low concentration coke oven gas power generation units is gradually increasing. Due to the strong mechanical performance of such power generation units, the use of low concentration coke oven gas should be actively promoted to improve the operation of power generation units, maintain their safety and stability, and fully reflect the efficient role of low concentration coke oven gas.

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