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Radial wheel edge sealing structure with internal splines

A sealing structure and radial sealing technology, which is applied in the direction of preventing leakage, engine components, machines/engines, etc., can solve problems such as limited effects, and achieve the effects of improving sealing performance, enhancing mixing strength, and improving heat transfer stability

Active Publication Date: 2019-04-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the radial sealing structure can reduce the degree of gas intrusion to a certain extent, the effect is limited

Method used

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  • Radial wheel edge sealing structure with internal splines
  • Radial wheel edge sealing structure with internal splines
  • Radial wheel edge sealing structure with internal splines

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and technical principles.

[0032] see figure 1 5, the present invention provides a radial rim seal structure with internal tooth grooves, the radial rim seal structure 2 is arranged in the gas turbine rotary-static disc cavity 1, and includes radial seals that cooperate with each other. The outer teeth 5 and the radially sealed inner teeth 6; wherein, a plurality of inner tooth slots 8 are evenly opened on the upper end surface 7 of the inner teeth of the radially sealed inner teeth 6; when the inclination angle 16 of the inner tooth slot is 0°, the inner teeth The slot 8 is a circumferential slot. When the inclination angle 16 of the inner cogging is 90°, the inner cogging 8 is an axial slot. When the inclination angle 16 of the inner cogging is between 0° and 90°, the inner cogging 8 is Oblique groove, the direction of the groove is consistent with the direc...

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PUM

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Abstract

The invention discloses a radial wheel edge sealing structure with internal splines. The radial wheel edge sealing structure (2) is arranged in fuel gas turbine rotary-static disk cavity (1) and comprises an outer radial sealing tooth (5) and an inner radial sealing tooth (6) which cooperate with each other, wherein an inner tooth upper end face (7) of the inner radial sealing tooth (6) is evenlyprovided with the multiple internal splines (8). By means of the radial wheel edge sealing structure with the internal splines, the high-temperature fuel gas invasion degree can be effectively reduced, the sealing performance of the wheel edge sealing can be improved, and therefore the situation that a turbine disk is too hot and loses efficacy is avoided, meanwhile, the amount of low-temperaturecooling air flow introduced from the position of a gas compressor can also be reduced, and therefore the unit efficiency is improved.

Description

technical field [0001] The invention relates to a wheel rim sealing structure, in particular to a radial wheel rim sealing structure with internal tooth grooves, which is used in the gap between the gas turbine and the high-temperature steam turbine rotating-static disc cavity, and has the advantages of reducing the gas intrusion of the disc cavity. effect. Background technique [0002] In turbomachinery such as aero-engines, heavy-duty gas turbines, supercritical and ultra-supercritical steam turbines, after the high-temperature gas in the main flow channel flows through the stationary vane nozzle, due to the combined action of the dynamic and static wake and the potential flow field of the moving vane, it will rotate during the rotation. - The intermediate region of the static part alternately forms a high-pressure flow area and a low-pressure flow area in the circumferential direction. In the high-pressure flow area, because the pressure of the main flow channel is highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D11/00F01D11/08
CPCF01D11/00F01D11/08
Inventor 李军程舒娴李志刚宋立明
Owner XI AN JIAOTONG UNIV
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