A Double Wall Cooling Structure with Air Film Hole Hyperbolic Spoiler Column
A technology of cooling structure and air film holes, which is applied in combustion methods, lighting and heating equipment, continuous combustion chambers, etc., can solve the problems of high pressure loss of cold air and large internal flow resistance, so as to reduce damage, weaken flow resistance, weight reduction effect
Active Publication Date: 2022-05-13
NORTHWESTERN POLYTECHNICAL UNIV
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although this structure can achieve a better heat exchange effect, the internal flow resistance is relatively large, and the pressure loss of the cold air is large.
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
[0034] The present embodiment is a double wall cooling structure with a hyperbolic spoiler column with a pore. The thickness of the impact orifice plate and the pneumatic membrane orifice plate is 1.5mm. Impact hole diameter D f It is 3mm, at an angle of 90° with the impact orifice plate, the impact distance is 4mm, and the hole spacing and hole spacing are 2.7D f 。 The pores of the pores are at an angle of 30°, and the pores of the pores are D f It is 3mm, and the hole spacing and hole spacing are both 2.7D f 。 The pores of the porosity and the impact vias are staggered; the hyperbolic spoiler column is set between the porosity pores and the impact holes, and the pore channels of the porosity in the hyperbolic spoiler column are r at a certain distance from the axis of the column 1 And the axis at an angle α the straight line rotated around the axis of the column for a week to get, R 1 Take 0.25D f , α take 15°; the outer wall of the hyperbolic spoiler column is the same, the dis...
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 relates to a double-wall cooling structure of a hyperbolic spoiler column with gas film holes, which belongs to the field of gas turbine engines; it includes a gas film orifice plate, an impact orifice plate and several hyperbolic holes with gas film holes arranged between the two plates The spoiler column forms a double-walled cooling structure; the impact hole is located on the impact orifice plate, and its axial direction is perpendicular to the impact orifice plate; the air film hole is located on the air film orifice plate, and its axial direction is 20-90° to the direction of ducted airflow ° inclination; impact holes and air film holes are periodically staggered along the airflow direction; hyperbolic spoiler columns with air film holes are air film holes in the hyperbolic spoiler columns; the cooling air flow passes through the air in the hyperbolic spoiler columns The film hole leads from the side of the cold air duct to the side of the gas duct. Compared with the traditional structure, the air-conditioning effect is better, and the cooling effect along the way is greatly improved.
Description
Technical field [0001] The present invention belongs to the field of gas turbine engines, specifically relates to a double wall cooling structure with a hyperbolic spoiler column with a pore. Background [0002] Military aircraft in the short take-off, climb and rapid maneuvering stages, often after the turbine exhaust re-ignition, in order to meet the need for additional large thrust in a short period of time, located between the turbine and the tail nozzle afterburner combustion chamber is used to implement the above objectives. However, since the inlet temperature of the afterburner combustion chamber has reached 950-1000K, the gas temperature after re-ignition in the afterburning chamber can be as high as 2050K-2100K, or even higher, and the afterburner combustion is usually opened and disconnected in a short period of time, so not only the cooling at extremely high temperatures must be considered, but also the thermal stress and thermal deformation caused by temperature dis...
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 Patents(China)
IPC IPC(8): F23R3/00
CPCF23R3/00F23R3/002F23R2900/03042F23R2900/03043
Inventor 朱惠人徐志鹏郭涛张丽许卫疆李鑫磊周道恩
Owner NORTHWESTERN POLYTECHNICAL UNIV