Unlock instant, AI-driven research and patent intelligence for your innovation.

Labyrinth type inner cooling structure for tail edge of high-temperature turbine movable vane

An internal cooling, labyrinth-type technology, applied in blade support elements, engine elements, machines/engines, etc., to enhance the trailing edge structure, enhance heat transfer, and have a simple structure

Inactive Publication Date: 2017-06-20
HARBIN INST OF TECH
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the deficiencies of the existing turbine blade trailing edge cooling structure, and provide a labyrinth internal cooling structure for the high temperature turbine blade trailing edge

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Labyrinth type inner cooling structure for tail edge of high-temperature turbine movable vane
  • Labyrinth type inner cooling structure for tail edge of high-temperature turbine movable vane
  • Labyrinth type inner cooling structure for tail edge of high-temperature turbine movable vane

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0026] Specific implementation mode one: as Figure 1-Figure 4 and Figure 6 As shown, this embodiment discloses a labyrinth internal cooling structure for the trailing edge of a high-temperature turbine blade, which consists of a turbine tenon 1, a turbine blade body 2, a leading edge 3 of a turbine blade, and a trailing edge of a turbine blade. The above-mentioned turbine tenon 1 is connected with the turbine blade body 2; the above-mentioned labyrinth internal cooling structure for the trailing edge of the high-temperature turbine rotor blade also includes a serpentine channel 4, a trailing edge split 6, a labyrinth partition wall unit 7 and a turbine The cavity 8 of the trailing edge of the blade, the serpentine passage 4 is arranged inside the turbine blade body 2 and is arranged near the leading edge 3 of the turbine blade, and the labyrinth partition wall unit 7 is arranged in the cavity 8 of the trailing edge of the turbine blade Inside, the trailing edge region of th...

specific Embodiment approach 2

[0027] Specific implementation mode two: as Figure 1-Figure 4 As shown, this embodiment is a further description of Embodiment 1. The serpentine channel 4 is composed of a plurality of partitions 5 that are arranged side by side and arranged in a staggered manner along the blade height direction. A disturbed cooling channel is formed.

specific Embodiment approach 3

[0028] Specific implementation mode three: as Figure 5 As shown, this embodiment is a further description of specific embodiment one or two, and the labyrinth partition wall unit 7 is defined as: the height H of the labyrinth partition wall unit 7, the length L of the labyrinth partition wall unit 7 , the width K of the labyrinth partition wall unit 7, the transverse pitch S of the labyrinth partition wall unit 7, the longitudinal pitch Y of the labyrinth partition wall unit 7, the partition wall unit of the labyrinth partition wall unit 7 in the same turbine blade The ratio of the length L to the width K is between 2-6, the relative pitch in the transverse direction is 2.5-4, and the relative pitch in the longitudinal direction is 2.5-4.

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

No PUM Login to View More

Abstract

The invention belongs to the field of turbine heat transfer, and provides a labyrinth type inner cooling structure for the tail edge of a high-temperature turbine movable vane. The labyrinth type inner cooling structure for the tail edge of the high-temperature turbine movable vane comprises a turbine tenon, a turbine vane body, a turbine blade front edge and a turbine blade tail edge. The turbine tenon is connected with the turbine vane body. The labyrinth type inner cooling structure for the tail edge of the high-temperature turbine movable vane further comprises an S-shaped channel, a tail edge crack, a labyrinth type partition wall unit and a cavity of the turbine blade tail edge. The S-shaped channel is arranged in the turbine vane body and is close to the turbine blade front edge. The labyrinth type partition wall unit is arranged in the cavity of the turbine blade tail edge. The tail edge crack is arranged in the area of the turbine blade tail edge, and cold air flows out of the tail edge crack. The labyrinth type inner cooling structure is used for cooling the tail edge of the high-temperature turbine movable vane and has the beneficial effects of being simple in structure and convenient to machine, and meanwhile accumulation of impurities in the tail edge channel can be weakened.

Description

technical field [0001] The invention relates to an internal cooling structure for the trailing edge of a high-temperature turbine rotor blade, belonging to the field of turbine heat transfer. Background technique [0002] With the continuous development of aero-engine and gas turbine technology, the turbine inlet temperature has reached 2200K, and is developing towards a higher inlet temperature. It is difficult for current metal materials to work stably at such a high temperature for a long time, so it is necessary to adopt various cooling measures to make the temperature of the blade surface lower than the tolerance temperature of the material. For the turbine blades, the heat transfer at the trailing edge of the turbine blades faces the following challenges: (1) The high temperature of the trailing edge, at the trailing edge of the turbine, due to the unsteady shedding of the vortex, a high heat load will be generated at the trailing edge, which is The cooling structure ...

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
no application Login to View More
IPC IPC(8): F01D5/18
CPCF01D5/187F05D2240/304
Inventor 罗磊王松涛杜巍
Owner HARBIN INST OF TECH