Adjustable fixed blade assembly of high-temperature high-dust-content flue gas turbine
A flue gas turbine and dust content technology, applied in the direction of engine components, mechanical equipment, machines/engines, etc., can solve the problems such as the inability to adjust the direction of the stator blades, the low working efficiency of the flue gas turbine, and the inability to fully recover the flue gas energy, etc., to achieve Effects of improving efficiency and changing flow capacity of stator blades
Inactive Publication Date: 2012-03-14
CHENGDU ENGINE GROUP
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Problems solved by technology
[0004] Aiming at the problems existing in the high-temperature and high-dust-content flue gas turbine stator vane assembly in the prior art, the object of the present invention is to provide a vane seal assembly with a brand-new structure to overcome the inability of the vane direction of the vane assembly in the prior art. Adjustment with flue gas volume changes, resulting in low efficiency of the flue gas turbine and failure to fully recover the energy carried by the flue gas, etc.
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[0019] An embodiment of the present invention is given below with reference to the accompanying drawings, and the present invention is further described through the embodiment, so that people can understand the present invention.
[0020] The flue gas turbine in this embodiment is used in the petrochemical industry to recover the energy of the high-temperature flue gas produced by the catalytic cracking unit. The temperature of the flue gas is about 670°C. The flue gas belongs to the gas-solid two-phase flow. The catalyst concentration in the flue gas is ≤0.2g / Nm 3 , Catalyst particle size distribution (mass%): >10 μm is 3-5%; 4-10 μm is 6-17%; 2-4 μm is 15-40%; 0-2 μm is 40-80%. The working environment is very harsh. The flue gas flow varies greatly with the seasons. Due to the harsh environment of the flue gas, the stator vane assembly of the flue gas turbine cannot be adjusted by an adjustment structure composed of an electric servo mechanism or a hydraulic servo mechanism...
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The invention discloses an adjustable fixed blade assembly of a high-temperature high-dust-content flue gas turbine. The adjustable fixed blade assembly structurally comprises a fixed blade ring, a plurality of fixed blades and a plurality of locating blocks, wherein the cross section of the fixed blade ring is L-shaped; the bottom of an annular groove of the fixed blade ring is provided with a plurality of mounting holes; the plurality of locating blocks are matched with the fixed blades and used for locating the directions of the fixed blades; and the fixed blades are fixedly arranged on the fixed blade ring through matching between blade handles of the fixed blades and the mounting holes on the bottom of the annular groove of the fixed blade ring, matching between the blade handles and the locating grooves of the locating blocks, matching between the locating blocks and the annular groove of the fixed blade ring and matching between threads on the blade handles and fastening nuts. An included angle Alpha is formed between the directions of the locating grooves of the locating blocks and the end surfaces of the locating blocks, the fixed blade directions of the fixed blade assembly can be adjusted along with the change of working condition of flue gas amount by replacing locating block groups with different locating grooves having the included angle Alpha, so as to adjust the runner shape among the blades, therefore the working efficiency of the gas turbine is improved, and energy carried by flue gas can be sufficiently recovered.
Description
technical field [0001] The invention relates to a stationary vane assembly for guiding flue gas from an inlet into a moving blade flow channel in a flue gas turbine, in particular to a stationary vane assembly of a flue gas turbine using flue gas with high temperature and high dust content as a working medium. Background technique [0002] The flue gas turbine is a device for recovering flue gas energy. The vane assembly composed of the vane and the vane ring fixing the vane is one of the key components affecting the efficiency of the flue gas turbine. The flue gas of the working medium is guided by the vane of the vane assembly. When it enters the flue gas turbine rotor moving blades, it expands to do work, convert the pressure energy and heat energy carried by the flue gas into mechanical energy, and recover the flue gas energy. The working efficiency of the flue gas turbine depends not only on the flow of the flue gas in the flow path of the rotor moving blade, but also o...
Claims
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Login to View More IPC IPC(8): F01D9/02F01D17/12
Inventor 刘建张智军刘盛宙师亚洲任小兵王建
Owner CHENGDU ENGINE GROUP