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Wheel disc burst prevention blade and design method of weak structure of wheel disc burst prevention blade

A design method and blade technology, applied to blade support components, mechanical equipment, engine components, etc., can solve the problem of high fuel consumption of the engine, reduce kinetic energy, avoid wheel burst, and avoid wheel rupture.

Active Publication Date: 2019-08-30
AECC HUNAN AVIATION POWERPLANT RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a design method for the anti-burst blade and its weak structure, in order to solve the "weak" section in the prior art, it is often necessary to design a thicker casing to resist the kinetic energy of the flying off blade, and the fuel consumption rate of the engine high technical issues

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  • Wheel disc burst prevention blade and design method of weak structure of wheel disc burst prevention blade

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Embodiment Construction

[0035] 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.

[0036] figure 1 It is a schematic diagram of the anti-burst blade of the wheel disc in the preferred embodiment of the present invention.

[0037] like figure 1As shown, the anti-disc burst blade of the present embodiment is used to cooperate with the disc. The blade 1 includes a tenon 14, a root 13, an edge plate 12 and a blade body 11. The blade body 11 on the blade 1 is provided with a blade for ensuring The weak structure 111 where the blade 1 breaks and flies off before the disc. In the disk bursting prevention blade of the present invention, the blade body 11 on the blade 1 is provided with a weak structure 111, which reduces the breakage critical speed of the blade 1 and is lower than...

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Abstract

The invention discloses a wheel disc burst prevention blade and a design method of a weak structure of the wheel disc burst prevention blade. The wheel disc burst prevention blade is used for matchinga wheel disc; the blade comprises a tenon, a stretching root, a rim plate and a blade body, wherein a blade body on the blade is provided with the weak structure for ensuring the blade to break before the wheel disc and fly off. According to the wheel disc burst prevention blade, the weak structure is arranged at the blade body on the blade, the breaking flying-off critical rotating speed of theblade is reduced to be lower than the critical breaking rotating speed of the wheel disc, so that the blade breaks before the wheel disc and flies off; moreover, the weak structure is arranged on theblade body of the blade, so that the weight of the broken and flying-off blade is reduced, the kinetic energy of the flying-off blade is effectively reduced, and the consequence that the wheel disc bursts to harm an engine is avoided; and meanwhile, the weight of a case is reduced, the thrust / work weight ratio of the engine is improved, and the fuel consumption rate is reduced.

Description

technical field [0001] The invention relates to the field of engines, in particular to an anti-burst disk blade. In addition, the present invention also relates to a design method of a weak structure including the above-mentioned anti-burst vane of the disc. Background technique [0002] The turbine in an aero turboshaft engine is a complex thermodynamic machine rotating at high speed, which contains a large number of high-speed rotor components. If these rotor parts have failures such as disc rupture, blade breakage and flying off due to manufacturing defects, impact by foreign objects or material fatigue, the flying broken rotor fragments will fly out at a very high speed under the action of centrifugal force Hit the receiver, causing severe impact and serious damage to the receiver. If the casing is not strong enough to contain the broken rotor fragments inside, the fragments may penetrate the casing and fly out of the engine, causing the engine to lose power. The whee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/14
CPCF01D5/147
Inventor 汪文君王建方李坚郭小军徐友良孟卫华
Owner AECC HUNAN AVIATION POWERPLANT RES INST
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