Combustion chamber of gas turbine and working method of combustion chamber
A gas turbine and working method technology, applied in the direction of combustion method, combustion chamber, continuous combustion chamber, etc., can solve problems such as cracks in the heat insulation tile of the combustion chamber, fuel switching back to the fuel oil working condition or tripping, and achieve the effect of sufficient combustion
Pending Publication Date: 2020-01-07
CHINA HUANENG GRP CO LTD +1
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[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] Such as figure 1 Shown is a combustion chamber of a gas turbine that improves combustion stability. The combustion chamber is in the shape of a barrel and mainly includes a combustion outer wall 1 and a combustion inner wall 3 . There are gaps to form the combustion chamber air channel; the top of the combustion chamber is provided with a burner 4, and a plurality of second tuyeres 2 are evenly distributed on the same height of the combustion inner wall 3, and the sleeve of the combustion inner wall 3 is provided with a tuyere stop Plate 5; the tuyere baffle plate 5 realizes covering or moving away from the second tuyere 2 by moving axially on the inner wall 3 of the combustion chamber; the end of the air channel of the combustion chamber is connected to the compressor outlet 7, and the bottom of the combustion chamber is conne...
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The invention discloses a combustion chamber of a gas turbine and a working method of the combustion chamber. The combustion chamber comprises a combustion chamber outer wall and a combustion chamberinner wall. A gap is formed between the combustion chamber outer wall and the combustion chamber inner wall to form a combustion chamber air channel. Combustors are arranged at the top of the combustion chamber inner wall. Second air openings are arranged on the side wall of the combustion chamber inner wall. An air opening baffle used for controlling the opening degree of the second air openingsis further arranged on the combustion chamber inner wall. According to the combustion chamber, under the condition that the total air quantity keeps unchanged, the air opening baffle is moved to change the areas of the second air openings, the secondary air quantity is correspondingly increased or decreased, and therefore the combustion chamber adapts to the influence of environment temperature changes on the air density. When in winter, the environment temperature is low in winter and the air density is large, the secondary air quantity is increased. When in summer, the environment temperature is high and the air density is small, the secondary air quantity is decreased, and therefore combustion stability of the gas turbine is improved.
Description
technical field [0001] The invention relates to the technical field of gas turbines, in particular to a combustion chamber of a gas turbine and a working method thereof. Background technique [0002] In the gas turbine system of the power station, when the ambient temperature is low in winter, the flame combustion in the combustion chamber is unstable. The main manifestation is that the buzzer monitoring system in the combustion chamber detects frequent alarm signals with pressure fluctuations greater than 80mbar and duration greater than 0.4s. Moreover, the ambient temperature has a consistent correlation with the buzzer signal, the higher the ambient temperature, the buzzer disappears; the lower the ambient temperature, the more frequent the buzzer. Frequent beeping alarms can not only lead to over-fuel switching back to fuel oil conditions or tripping events, but also may cause accidents such as cracks in the combustion chamber heat insulation tiles. [0003] Through the...
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Login to View More IPC IPC(8): F23R3/26
CPCF23R3/26
Inventor 史绍平穆延非张波闫姝陈新明
Owner CHINA HUANENG GRP CO LTD