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An adjustable diffuser section structure of a flue gas turbine

A technology of flue gas turbine and diffuser section, which is applied in the direction of mechanical equipment, engine components, machines/engines, etc., and can solve the problems affecting the safety, reliability, and stable operation of flue gas turbines, the change of the gap between the rotor and stator sealing parts, and the impact on the rotor string. Problems such as movement and load can be solved to achieve the effect of simple structure, precise adjustment and improved work performance

Active Publication Date: 2019-07-05
AECC AVIATION POWER CO LTD
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AI Technical Summary

Problems solved by technology

In the product manufacturing process, the exhaust volute formed by welding sheet metal parts deforms greatly, and will produce large deformation in the axial and radial directions; in the assembly process, in order to achieve the intake shell and exhaust volute The required rigid connection between the seam flange and the bolts will cause a large deformation on the outside of the exhaust volute, resulting in the non-concentricity between the casing and the rotor in the exhaust volute, the gap between the rotor and the stator, and the gap between the sealing parts, etc. In severe cases, it will affect the series motion and load of the rotor, reduce the bearing capacity of the bearing, and directly affect the safe, reliable and stable operation of the flue gas turbine

Method used

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  • An adjustable diffuser section structure of a flue gas turbine
  • An adjustable diffuser section structure of a flue gas turbine
  • An adjustable diffuser section structure of a flue gas turbine

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Embodiment Construction

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer" etc. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention . In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise spe...

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Abstract

The invention discloses a flue gas turbine adjustable diffusion section structure which comprises an adjustable diffusion section, an air inlet shell, an exhausting volute and a blade shroud, whereinthe adjustable diffusion section is arranged between the air inlet shell and the exhausting volute of a flue gas turbine and is connected with the blade shroud through a first connecting bolt; an adjusting block is arranged on the exhausting volute and is connected with an axial adjusting bolt arranged on the adjustable diffusion section. The flue gas turbine adjustable diffusion section structuresolves the problem about assembling and adjusting difficulty caused by deformation, improves the assembling efficiency and has the characteristics of being simple in structure, convenient to use, lowin manufacturing cost, precise in adjustment and high in reliability.

Description

technical field [0001] The invention belongs to the technical field of catalytic cracking waste heat energy recovery unit equipment in the petrochemical industry, and in particular relates to an adjustable diffuser section structure of a flue gas turbine. Background technique [0002] At present, the flue gas turbine, which is widely used in catalytic cracking waste heat energy recovery units in the petrochemical industry, is the core device of the entire unit. It generally adopts a structure with horizontal axial inlet at the inlet and vertical axial exhaust at the outlet. The rigid connection between the intake shell and the exhaust volute is generally adopted with a seam flange and bolts. This rigid connection method has the characteristics of simple structure, convenient installation, good stability, reliable connection and unfavorable deformation. In the product manufacturing process, the exhaust volute formed by welding sheet metal parts deforms greatly, and will prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D11/16F01D25/26
Inventor 闫庆安卢晓星郭永强张三多章宏标
Owner AECC AVIATION POWER CO LTD
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