Stator assembly clamping method and stator assembly
A clamping method and assembly technology, applied in the direction of stator, engine components, machine/engine, etc., can solve the problem of rotor sticking, etc., and achieve the effect of increasing the pressing area, increasing the pressing amount, and ensuring normal use.
Active Publication Date: 2018-12-14
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0004] The invention provides a clamping method of a stator assembly and a stator assembly to solve the technical problem of rotor jamming caused by the sinking of the casing in the existing engine
Method used
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[0027] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0028] refer to figure 1 , a preferred embodiment of the present invention provides a stator assembly, including a casing 1 , stator blades 2 , and an inner casing 3 . The upper end of the stator blade 2 is connected to the casing 1 , and the lower end is connected to the inner casing 3 . The lower end of the stator blade 2 is in interference fit with the inner casing 3, and the interference is greater than zero. In the stator assembly of the present invention, the casing 1 is in the shape of a circle, a plurality of stator vanes 2 are evenly distributed in a circle, and a plurality of inner casings 3 are also evenly distributed in a circle, figure 1 Only schematically draw a group of matchi...
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The invention discloses a clamping method for a stator combined member and the stator combined member assembled through the method. The method comprises the following steps that parts are provided; the parts comprise casings, stator blades, inner casings, connecting screws and gaskets with the predetermined thickness, and each inner casing comprises a front half portion and a rear half portion which are separated from each other; the parts are preassembled, and the preassembled combined member is obtained; the gaskets are clamped between the front half portions and the rear half portions, the front half portions and the rear half portions are combined together through connecting bolts to support the lower ends of the fixed stator blades, the upper ends and the lower ends of the stator blades are correspondingly and fixedly connected to the casings and the inner casings, the preassembled combined member is obtained, and the preassembled combined member accords with the set clamping amount; the tightening torque of the connecting bolts is determined; the preassembled combined member is disassembled, the parts except for the gaskets are formally assembled according to the tightening torque, and the stator combined member is obtained; and in the stator combined member, the lower ends of the stator blades are in interference fit with the front half portions and the rear half portions, and the magnitude of interference is larger than zero.
Description
technical field [0001] The invention relates to the field of aero-engines, in particular to a method for clamping a stator assembly of an aero-engine and the stator assembly. Background technique [0002] In a turboprop engine, the turbine is divided into two parts, the rotor and the stator. The stator assembly (also known as the turbine guide) mainly includes the turbine casing and the stator blade set. One end of the stator blade set is connected to the turbine casing, and the other end is assembled and fixed with the inner casing. For example, in the Chinese invention patent application with application number 201410700861.0, the large-diameter end of the guide vane group (that is, the stator blade group) is hung in the groove of the casing, the positioning block at the small-diameter end extends into the positioning groove of the partition, and the pressure ring passes through Screws and locking plates are fixed on the partition, and the positioning block of the guide v...
Claims
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IPC IPC(8): F01D9/04F01D25/24F01D25/28
CPCF01D9/04F01D25/246F01D25/28
Inventor 倪慧妍杨春华刘昌华
Owner CHINA HANGFA SOUTH IND CO LTD