Prewhirl and pressurizing rotor disc structure for wheel rim sealing
A technology of sealing structure and rotor disk, which is applied in the direction of supporting components of blades, preventing leakage, engine components, etc., can solve the problems of loss of efficiency of the whole machine, damage to the cooling effect of the disc cavity, damage to the safe and reliable operation of the whole machine, etc.
Active Publication Date: 2017-11-24
NORTHWESTERN POLYTECHNICAL UNIV
View PDF2 Cites 8 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Studies have shown that gas intrusion phenomenon is an important factor leading to the overheating failure of the turbine disk. The occurrence of the intrusion phenomenon will destroy the cooling effect of the disk cavity, damage the safe and reliable operation of the whole machine, and at the same time cause the loss of the efficiency of the whole machine
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0016] This embodiment is a pre-rotation booster rotor disk structure used for wheel rim sealing.
[0017] refer to figure 1 , figure 2 , this embodiment is used for the pre-swirl supercharged rotor disk structure of the rim seal, including the pre-swirl booster device 1 and the rim seal structure 3, and the flow channel is formed by adding a plurality of baffles on the surface of the rotor disk, and the baffles It is a Fibonacci spiral structure; a plurality of Fibonacci spiral baffles and the flow channels formed by them form the pre-spin booster device 1 . In this embodiment, the inlet of the pre-swirl supercharging device 1 is a part of the inlet of the rotating static disc chamber 2, and a part of the sealed airflow close to the rotor enters the pre-swirling supercharging device 1, and the outlet of the pre-swirling supercharging device 1 is facing the rim Inlet of sealing structure 3.
[0018] In this embodiment, the height of the Fibonacci spiral baffle gradually in...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a prewhirl and pressurizing rotor disc structure for wheel rim sealing. A plurality of baffles are additionally installed on the disc face of a rotor disc, so that flowing channels are formed, and the baffles are in a Fibonacci spiral line shape; and the multiple Fibonacci-spiral-line-shaped baffles and the flowing channels formed by the baffles form a prewhirl pressurizing device. The flowing channels formed by the Fibonacci-spiral-line-shaped baffles gradually expand from inlets to outlets, so that decelerating and pressurizing are achieved. Sealing airflow entering in the radial direction flows out from the outlets at a tangential speed through the flowing channels formed by the Fibonacci-spiral-line-shaped baffles, pressurizing and prewhirl can be conducted on the sealing airflow close to the rotor disc, and moreover, high-pressure high-tangential-speed sealing airflow enters the wheel rim sealing structure through the flowing direction of sealing airflow on a bottom baffle control part of the wheel rim sealing structure. The fuel gas intrusion degree can be decreased, the temperature of a turbine disc can be lowered, the heat transfer stability of the turbine disc can be improved, moreover, the sealing airflow loss caused by interaction between the outlet flow and the main flow can be reduced, and the efficiency of a whole machine can be improved.
Description
technical field [0001] The invention relates to the technical field of gas turbines, in particular to a pre-swirl supercharged rotor disc structure used for wheel rim sealing. Background technique [0002] There is an annular chamber called the turbine disk cavity between the turbine rotating disk and the stationary parts of the gas turbine. The gas intrusion into the turbine disk cavity means that the friction pump effect caused by the rotation of the turbine disk will continuously pump out the air in the disk cavity, making the gas in the cavity Under the action of the friction pump effect, when the pumping flow is greater than the supply flow of cold air, gas intrusion will occur at the rim of the turbine disk, that is, the main gas will enter the disk cavity; the mutual interference of the rotor and stator in the main channel , causing the circumferential pressure fluctuation of the main gas, and also forming gas intrusion at the rim of the turbine disk. Studies have sh...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/02F01D11/06
CPCF01D5/02F01D11/06F05D2220/32F05D2240/20F05D2240/55
Inventor 王占学杨帆周莉张晓博
Owner NORTHWESTERN POLYTECHNICAL UNIV