Gas turbine inlet air temperature control system

A technology of intake air temperature and control system, which is applied in the direction of gas turbine devices, refrigerators, mechanical equipment, etc., can solve the problems that the intake air temperature of gas turbines cannot be adjusted, the adjustment method is single, and can only be increased or decreased, so as to achieve the summer peak The effect of running, increasing the intake air temperature, and improving efficiency

Pending Publication Date: 2022-06-17
HUANENG BEIJING CO GENERATION
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Problems solved by technology

[0005] To sum up, the gas turbine intake air temperature needs to be adjusted according to the external working environment temperature. Single, can only increase or decrea

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  • Gas turbine inlet air temperature control system

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[0034]下面将结合本说明书实施例中的附图，对本说明书实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有付出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。

[0035]需要说明的是，本说明书实施例及附图中的术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。

[0036]本说明书实施例公开了一种燃机进气温度的控制系统。以下分别进行详细说明。

[0037]燃气轮机作为一种容积式动力机械设备，其输出功率与进口空气的质量流量有关，当进口空气温度下降时，空气的密度增大，进口空气的质量流量随之增大，则燃机的输出功率和效率也提高，因此可以得出结论：在“冷”的环境下，燃气轮机会有更大的出力，故在高温环境下可通过降低进气温度来提高燃机出力。在部分负荷下，如果在负荷不变的情况下提高进气温度，透平前温度就会提高(前提是未进入温控)，进而提高燃机效率，燃机以部分负荷运行时，压气机的进气质量流量为定值，提升燃机进气温度会降低进气空气密度，从而提高进气体积流量，迫使压气机IGV角度开大，从而减少IGV内空气流动的节流损失，改善压气机运行状况，达到节能和提高效率的目的。因此，在不同运行情况下，燃机对其进气温度的要求有所不同，在高温大负荷工况下，需要通过降低燃机的进气温度以提高燃机出力，而在部分负荷工况下，则需要通过提高燃机的进气温度以提高燃机效率。

[0038]本发明实施例提供了一种燃机进气温度的控制系统，如图1所示，所述控制系统包括：燃气–蒸汽联合循环机组和换热机构，其中，所述燃气–蒸汽联合循环机组包括：燃气轮机1、闭冷水换热器2、闭冷水回水管3、闭冷水供水管4、二级疏水冷却器5，所述换热机构包括空气换热器8、换热进水管道9、换热出水管道10、第一泵体11、冷却进水管12、冷却出水管13、溴化锂装置14、第一加热进水管15、第一加热出水管16、第二加热进水管17、第二加热出水管18、引水管19。

[0039]具体的，所述闭冷水换热器2的进水口连接有闭冷水回水管3，所述闭冷水回...

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Abstract

The embodiment of the invention provides a gas turbine inlet air temperature control system which comprises a gas-steam combined cycle unit and a heat exchange mechanism, the heat exchange mechanism comprises an air heat exchanger, and an air outlet of the air heat exchanger communicates with an air inlet of an air compressor of a gas turbine; the water inlet end of the air heat exchanger is connected with a heat exchange water inlet pipeline, and a third valve is arranged on the heat exchange water inlet pipeline and used for controlling water circulation in the heat exchange water inlet pipeline. The water outlet end of the air heat exchanger is connected with a heat exchange water outlet pipeline, and a fourth valve is arranged on the heat exchange water outlet pipeline and used for controlling water circulation in the heat exchange water outlet pipeline. A cooling water inlet pipe is led out of the heat exchange water inlet pipeline to convey cooling media, and a first heating water inlet pipe and a second heating water inlet pipe are led out to convey heating media. Switching of cold and hot media of the air heat exchanger is controlled through the multiple valves, the purpose of increasing or reducing the gas inlet temperature of the gas turbine according to the actual operation condition is achieved, and different requirements of a unit are met.

Description

technical field [0001] The invention relates to the technical field of power generation equipment, in particular to a control system for gas turbine intake air temperature. Background technique [0002] At present, a large number of domestic gas-fired power plants are put into operation. Even if the efficiency of gas-steam combined cycle units is only increased by 0.1%, it will produce good energy-saving effects and huge economic benefits. Therefore, in order to reduce the operating costs of power plants, it is convenient to improve unit efficiency has become an important topic in recent years. For gas-steam combined cycle units, the operation mode and efficiency of the gas turbine directly affect the efficiency of the entire combined cycle unit. According to the operating characteristics of the gas turbine, the temperature of the gas turbine inlet has a great impact on its performance. [0003] On the one hand, due to the linear relationship between the gas turbine output ...

Claims

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Application Information

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IPC IPC(8): F02C7/057F02C7/141F25B15/06
CPCF02C7/057F02C7/141F25B15/06
Inventor 杨耀文李建超白秀森安思远张超王建国刘勇麟范思毅李盟张建民赵宇辰关宇君方明杨丽萍王宝生
Owner HUANENG BEIJING CO GENERATION
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