Swirler with adjustable blade angle and combustion device
A technology of blade angle and swirler, which is applied in combustion chambers, combustion methods, combustion equipment, etc., can solve problems such as adjusting the swirl blade angle, and achieve the effect of changing the swirl number
Pending Publication Date: 2021-01-12
SHANGHAI ELECTRIC GAS TURBINE CO LTD
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Problems solved by technology
However, traditional fixed geometry burners do not have a means of adjusting the swirl vane angle after installation
Method used
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[0031] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0032] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. within the scope covered by the disclosed technical content. At the same time, terms such as "upper", "lo...
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The invention provides a swirler with an adjustable blade angle and a combustion device. The swirler comprises a center shaft, an axially interpenetrating cylinder and multiple swirl vanes, wherein the cylinder is coaxially arranged outside the center shaft in a sleeving mode; multiple sliding grooves circumferentially arrayed with the axis of the cylinder as the circle center line are formed in the cylinder; the swirl vanes are in one-to-one correspondence with the multiple sliding grooves; all the swirl vanes are circumferentially arrayed in an annular through-flow space jointly defined by the outer circumferential wall of the center shaft and the inner circumferential wall of the cylinder with the axis of the center shaft as the circle center line; each swirl vane is rotationally arranged on the center shaft; part of the structure of each swirl vane is arranged in the corresponding sliding groove in a sliding mode; and when the cylinder and the center shaft relatively rotate, all the swirl vanes synchronously rotate around the rotating axes of the swirl vanes. According to the swirler with the adjustable blade angle and the combustion device provided by the invention, the flow guide angle of the swirl vanes can be flexibly adjusted after the swirler is assembled, and then the swirl number of the swirler is changed, so that the running state of a gas turbine unit is improvedafter the gas turbine unit is installed or in the running process of the gas turbine unit.
Description
technical field [0001] The invention relates to the technical field of gas, in particular to a swirler and a combustion device with adjustable blade angles. Background technique [0002] At present, gas turbine combustors generally use swirl blades to guide the flow direction of the airflow to generate swirl, thereby controlling the stable combustion process of the flow field in the combustion chamber. The geometric structure of gas turbine burners currently on the market is fixed after installation, and the number of swirls (an index to measure the strength of the swirl) generated by it is also determined accordingly. [0003] In recent years, both academic research and gas turbine application practice have shown that changing the swirl number will affect the combustion state in the combustion chamber. Properly adjusting the swirl vane angle of the burner and adjusting the swirl number can improve the flame stability and combustion pollutant emission characteristics. Howe...
Claims
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IPC IPC(8): F23R3/26F23R3/38F23R3/58
CPCF23R3/26F23R3/38F23R3/58
Inventor 田寅申
Owner SHANGHAI ELECTRIC GAS TURBINE CO LTD