Twin-web rotor disc provided with disc cavity flow-guide rib plates

A technology of turbine disk and double-spoke plate, which is applied in the direction of supporting elements of blades, engine elements, machines/engines, etc., can solve the problems of low heat exchange efficiency, low pressure at the outlet of the disk cavity, and increase the axial stiffness of the disk center, etc. Achieve the effects of strengthening heat transfer, increasing flow rate, and improving the ability to resist deformation in the axial direction

Active Publication Date: 2014-12-10
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose is to adopt the structure of double-spoke turbine disc and tongue plate with disc cavity guide ribs to solve the problems of low heat exchange efficiency and low pressure at the outlet of the disc

Method used

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  • Twin-web rotor disc provided with disc cavity flow-guide rib plates
  • Twin-web rotor disc provided with disc cavity flow-guide rib plates
  • Twin-web rotor disc provided with disc cavity flow-guide rib plates

Examples

Experimental program
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Embodiment Construction

[0023] This embodiment is a double-spoke turbine disk with a disk cavity guide rib.

[0024] refer to Figure 1-Figure 5 , the double-spoke turbine disc in this embodiment includes a front spoke plate 3, a rear spoke plate 6, a guide rib 2, a tongue plate 10, a front hub 5, a rear hub 9, a cold air channel 1 and a turbine disc on the disc edge. The tenon and groove structure is omitted; the turbine disk edge 4 is evenly distributed with a plurality of disk edge cold air passages 1 along the radial direction of the circumference; 2 is a blade cross-sectional structure, and the bending direction of the guide rib plate 2 is the same as the rotation direction of the turbine disk. In this embodiment, the flow guide ribs 2 on the front web 3 extend radially toward the edge of the disk in three layers according to the center, and the flow guide ribs 2 on the rear web 6 extend radially toward the edge of the disk into two layers. , the inclination angle α between the front spoke pla...

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PUM

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Abstract

The invention discloses a twin-web rotor disc provided with disc cavity flow-guide rib plates. The plurality of flow-guide rib plates are arranged on two spoke plates of the twin-web rotor disc. Disc edge cool air channels are evenly distributed in the radial direction in the edge of the rotor disc along the circumference and cooling air enters cooling blades through the disc edge cool air channels from disc cavity of the twin-web rotor disc. An annular tongue plate is embedded between a front hub and a rear hub of the twin-web rotor disc, and a central channel of the tongue plate is communicated with an inner cavity of the rotor disc. The flow guide rib plates are distributed in a streamline layered mode in the rotating direction of the rotor disc and realizes a centrifugal supercharging effect when the rotor disc is rotating, so that flow speed and the pressure of the cooling air in the disc cavity are increased. The heat exchange area is increased, the convective heat exchange efficiency of the disc cavity is improved by using the flow guide rib plates, and the effect of enhancing heat exchange is achieved. The tongue plate structure is added between the front hub and the rear hub of the rotor disc, and the axial rigidity of an opening in the disc center is improved. By utilizing variable cross-section channels in the tongue plate and the disc edge, the pressure and the flow speed of the cooling air passing through the channels can be controlled.

Description

technical field [0001] The invention belongs to the technical field of gas turbines, and in particular relates to a double-spoke turbine disk used on a gas turbine with a disk cavity guide rib and a tongue plate structure for increasing the axial rigidity of the disk center. Background technique [0002] As the turbine inlet temperature of the gas turbine continues to increase, the operating temperature of the high-pressure turbine disk is also getting higher and higher. At present, the temperature of the disk edge of the high-pressure turbine disk is as high as about 700°, and the temperature of the disk center far away from the high-temperature gas is usually about 400°. Traditional high-pressure turbine disks adopt a single-spoke structure. Since this type of turbine disk cannot achieve cooling inside the disk, it is easy to cause uneven temperature and large thermal stress. Generally speaking, the temperature stress of high-pressure turbine disks accounts for roughly Ab...

Claims

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Application Information

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IPC IPC(8): F01D5/06F01D5/08
Inventor 李磊张猛创仝福娟高文静杨未柱杨帆曾小虎岳珠峰苟文选
Owner NORTHWESTERN POLYTECHNICAL UNIV
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