Gas turbine low-emission swirl burner and operation method thereof
A swirl burner, gas turbine technology, applied in the combustion method, combustion chamber, combustion equipment and other directions, can solve the problems of high cost, complex control system, difficult implementation, etc., to avoid flashback, high operation flexibility, reduce The effect of local concentration
Pending Publication Date: 2022-02-08
SHANGHAI ELECTRIC GAS TURBINE CO LTD
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Problems solved by technology
The control system involved in this patent is extremely complex, and each channel needs to be controlled separately. This design project is difficult and costly to implement
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[0027] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, not to limit the present invention.
[0028] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and therefore should not be construed as limiting the inventio...
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The invention discloses a gas turbine low-emission swirl burner and an operation method thereof. The burner comprises an inner cone and an outer cone which are hollow and are coaxially arranged, and a plurality of swirl vanes are arranged between the inner cone and the outer cone. A plurality of inner cone fuel spray hole channels penetrating through the inner cone wall are formed in the inner cone wall, an annular vane fuel spray hole channel is further formed in the inner cone wall, and a plurality of vane fuel spray holes are formed in each swirl vane. Each vane fuel spray hole is communicated with the corresponding vane fuel spray hole channel, and a cavity between the inner cone and the outer cone forms an air channel. A fuel nozzle of the burner is of a two-stage design, one stage is the inner cone fuel spraying hole channels in the inner cone wall of the burner, and the fuel is sprayed outwards from an inner cone inner cavity through the plurality of inner cone fuel spraying hole channels during low load, so that the flame can be stabilized, and the emission can be controlled; the other stage is the vane fuel spraying holes in the swirl vanes, and the fuel is sprayed out through the vane fuel spray holes during high load and is mixed with air under the action of strong rotational flow and is burnt, so that the emission of NOx can be reduced.
Description
technical field [0001] The invention belongs to the technical field of gas turbine combustion, and in particular relates to a gas turbine low-emission swirl burner and an operating method thereof. Background technique [0002] With the improvement of the performance parameters of the gas turbine, the NOx emission of the gas turbine may be too high at full load. In order to meet the increasingly stringent emission regulations, it is necessary to design a low-emission combustor suitable for the gas turbine. [0003] Chinese patent CN1280578C discloses a premix burner, which is provided with a distribution device so that the air mass flow of combustion air is shaped in the radial direction of the annular air passage, thereby generating a radially variable fuel / air mixture for stable combustion. In this patent, there is only one fuel channel, which cannot realize multi-channel hierarchical control, and the operation flexibility is relatively poor. [0004] Chinese patent CN1023...
Claims
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Login to View More IPC IPC(8): F23R3/28
CPCF23R3/286
Inventor 何磊熊丽萍陈明敏刘晓佩颜伟赵连会
Owner SHANGHAI ELECTRIC GAS TURBINE CO LTD