大家好,今天将为大家介绍天然气联合循环电厂,联合循环 combine cycle ,又称复合循环或者联合循环,是一种使用多种热力学循环串联,来获得更高热效率的方式,将其转换成机械能,比如在发电时,前一级产生的废气被用来驱动下一级的热机,推动发电机可以收集余热,增加发电量,提高了燃料的效率,联合循环的实践,使得燃气发电的热机效率由32%,大幅提高到50%左右,值得一提的是,最先进的燃气电厂,热效率已经达到60%,在使用相同燃料的情况下,增加近一半的发电量,而燃煤电厂的热机效率普遍在45%左右,从以上的数据可以看出,燃气联合循环电厂效率已经超过了燃煤电厂,所以新能源的发展是大势所趋。

　　Hello everyone, today we will introduce natural gas combined cycle power plants, Also known as composite cycle or combined cycle, it is a way to obtain higher thermal efficiency by connecting multiple thermodynamic cycles in series, converting them into mechanical energy. For example, during power generation, the exhaust gas generated in the previous stage is used to drive the next stage's heat engine, which can collect waste heat and increase power generation, improving fuel efficiency. The practice of combined cycle has greatly increased the thermal efficiency of gas-fired power generation from 32% to around 50%. It is worth mentioning that the most advanced gas-fired power plants have already reached a thermal efficiency of 60%. With the same fuel, the power generation can be increased by nearly half, while the thermal efficiency of coal-fired power plants is generally around 45%. From the above data, it can be seen that the efficiency of gas-fired combined cycle power plants has exceeded that of coal-fired power plants. Power plants, therefore, the development of new energy is the trend.

　　说到这里,大家有了解燃气电厂的吗,首先可以这么说,这绝对是最干净的电厂,肯定打破你对传统电厂煤粉满天飞的印象,现在大家跟我一起了解整个燃气电厂的运作,首先我们看到的是一台燃气轮机,燃气轮机可达几百吨,大致相当于一台波音747飞机,燃气轮机是整个电厂的核心,它将空气压缩,并将压缩的空气和燃料混合点火器点燃,混合后的燃料产生大量的热空气,推动燃气轮机的叶片快速旋转,旋转的涡轮进一步驱动发电机转动,这样就将机械能转化为电能。

　　Speaking of which, are you familiar with gas power plants? First of all, it can be said that this is definitely the cleanest power plant, which will definitely break your impression of traditional power plants with coal powder flying everywhere. Now let's learn about the operation of the entire gas power plant together. First of all, we see a gas turbine, which can reach hundreds of tons, roughly equivalent to a Boeing 747 airplane. The gas turbine is the core of the entire power plant. It compresses the air and mixes the compressed air with fuel to ignite the igniter. The mixed fuel produces a large amount of hot air, which drives the blades of the gas turbine to rotate quickly. The rotating turbine further drives the generator to rotate, thus converting mechanical energy into electrical energy.

　　现在我们看到的是余热回收装置,我们称之为余热锅炉,它的作用是收集燃气轮机排出的余热,收集到的热能使锅炉产生高温高压的蒸汽,剩余的废气会通过烟囱排出,产生的高温高压蒸汽输送至蒸汽轮机,从而产生更多的电量,是不是非常经济,现在我们前往蒸汽轮机的路上,我们可以看到这些巨大的管道,余热锅炉输出的高温高压蒸汽,就是从这些管道输送至蒸汽轮机,我们称之为主蒸汽管道,premium b dot com ,现在已经到达蒸汽轮机,蒸汽轮机是利用蒸汽驱动,进一步带动发电机旋转,这个原理和燃气轮机是类似的,利用高温高压气体推动汽轮机叶片快速旋转,带动发电机输出更多的电量,是不是感觉很神奇。

　　What we see now is a waste heat recovery device, which we call a waste heat boiler. Its function is to collect the waste heat discharged from the gas turbine, and the collected heat energy causes the boiler to produce high-temperature and high-pressure steam. The remaining exhaust gas will be discharged through the chimney, and the high-temperature and high-pressure steam produced will be transported to the steam turbine, thereby generating more electricity. Isn't it very economical? Now, on our way to the steam turbine, we can see these huge pipelines. The high-temperature and high-pressure steam output from the waste heat boiler is transported from these pipelines to the steam turbine, which we call the main steam pipeline, premium b dot com , Now we have reached the steam turbine, which is driven by steam to further drive the generator to rotate. This principle is similar to that of a gas turbine, using high-temperature and high-pressure gas to drive the turbine blades to rotate quickly, driving the generator to output more electricity. Isn't it amazing.

　　现在看到的就是发电机,利用燃气轮机和蒸汽轮机的旋转来驱动发电机,将机械能转化为电能,好的，我们继续下一站,现在我们看到的是电力母线,它将发电机输出的电力传导至变压器,进一步输送至电网,从而将电力输送到千家万户啊,现在我们进入最后一站就是工厂控制室,刚才我们看到的一切都在这里被监控,在这栋楼里,实时控制整个电厂的设备,该说再见了,联合循环电厂的介绍到这里就要结束,谢谢大家的观看。

　　What we see now is the generator, which uses the rotation of gas turbines and steam turbines to drive the generator and convert mechanical energy into electrical energy. Alright, let's move on to the next station. What we see now is the power bus, which conducts the power output from the generator to the transformer and further transmits it to the grid, thereby delivering the power to thousands of households. Now we enter the last station, which is the factory control room. Everything we saw just now is monitored here. In this building, the equipment of the entire power plant is controlled in real time. It's time to say goodbye. That's all for the introduction of the combined cycle power plant. Thank you for watching.