Blade purging device for flue gas turbine
A flue gas turbine and blade technology, which is applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of unsatisfactory descaling effect and poor effect of internal components in the pipeline, so as to ensure long-term stable operation and good descaling effect Effect
Active Publication Date: 2022-06-17
SINOPEC ENG +1
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Problems solved by technology
The method of ultrasonic descaling has a good descaling effect on the surface of the pipeline, but the descaling effect on the internal components of the pipeline is not ideal, especially for the descaling of the moving blades. The moving blades and the shell are not in direct contact. Medium is required, the flow velocity of the flue gas in the flow channel is close to the speed of sound, and the effect of descaling the moving blades by ultrasonic waves is very poor
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[0031] Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein.
[0032] refer to figure 1 , the blade purging device according to the present invention is used in a flue gas turbine, the flue gas turbine mainly includes an intake housing 2, a stationary vane assembly 3, a rotor 6, and the intake housing 2 includes a flange 12, an intake cylinder 13 , the intake cone 14, the stationary vane assembly 3 includes a stationary vane lining ring 15, a stationary vane 16, and a stationary vane support 17, the rotor 6 includes a main shaft 9, a wheel disc 10, and a moving blade 11, and the stationary vane assembly 3 is fastened to the intake cone. 14 and flange 12.
[0033] like figure 1 As shown, the flue gas turbine further inclu...
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The invention belongs to the fields of oil refining and chemical industry, and relates to a blade purging device for a flue gas turbine, which includes an external blade purging component, which is arranged on the flange, and is used to make the purge gas pass through the flange The outer purge gas channel formed by the opening on the top enters the top of the stator blade; the inner blade purge assembly is arranged on the inlet cone, and is used to make the purge gas pass through the opening on the inlet cone The internal purge gas channel formed by the hole enters the bottom of the stationary blade; the purge gas flows into the flow path of the moving blade after passing through the stationary blade, and purges the moving blade. According to the blade purging device of the present invention, the purge gas can be regularly fed online, and the difference in thermal expansion coefficient between the scale sample and the blade is used to make the scale sample fall off from the blade, and the scaling on the stationary blade and the moving blade is cleaned, and the descaling effect is better. It can ensure the long-term stable operation of the flue gas turbine and the device.
Description
technical field [0001] The invention relates to the fields of oil refining and chemical industry, and more particularly, to a blade purging device for a flue gas turbine. Background technique [0002] Flue gas turbine is an important energy-saving equipment of catalytic cracking unit. The medium of flue gas turbine is high-temperature flue gas containing catalyst dust particles. The catalyst will deposit and scale in the blades and flow passages of flue gas turbine, which will reduce flue gas after long-term operation. Turbine efficiency, destroying the dynamic balance of the flue gas turbine rotor and affecting the running stability of the flue gas turbine. Once the flue gas turbine is fouled and accumulated to a certain extent, the fouling can only be cleaned by shutting down and dismantling the flue gas turbine, which seriously affects the long-term operation of the device. [0003] The raw materials of foreign catalytic devices are generally wax oil or the rate of slag ...
Claims
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IPC IPC(8): F01D25/00
CPCF01D25/002
Inventor 冀江丁勤王自球张家灿
Owner SINOPEC ENG