CN-122014358-A - Turbulent flow column, turbine blade and gas turbine for enhancing heat exchange

Abstract

The invention provides a turbulent flow column, a turbine blade and a gas turbine for enhancing heat exchange. The turbulent flow column for enhancing heat exchange comprises a torsion column which is in a spiral line shape surrounding the virtual axis and extending along the virtual axis, and the torsion column is arranged as at least two of the virtual axes which are collinear. According to the vortex column for enhancing heat exchange, at least two torsion columns with collinear virtual axes can enable fluid flowing through to generate complex vortex, so that the fluid has a better heat exchange and cooling effect.

Inventors

• LIU YUN
• WU HONG
• WU AN
• DENG BO
• YIN YUYANG

Assignees

• 中国联合重型燃气轮机技术有限公司

Dates

Publication Date

20260512

Application Date

20260204

Claims (10)

1. 1. The turbulent flow column for enhancing heat exchange is characterized by comprising a torsion column (1), wherein the torsion column (1) is in a spiral shape which surrounds a virtual axis and extends along the virtual axis, and the torsion column (1) is arranged in at least two collinear virtual axes.
2. 2. The heat exchange enhanced turbulent column according to claim 1, wherein the spiral directions of the at least two torsion columns (1) are the same and are abutted.
3. 3. The heat exchange enhanced turbulent flow column according to claim 1, wherein the spiral directions of the at least two torsion columns (1) are the same and are arranged at intervals along the circumferential direction of the virtual axis.
4. 4. The heat exchange enhancing turbulent flow column according to claim 1, wherein the torsion column (1) comprises a first torsion column (11) and a second torsion column (12), the spiral directions of the first torsion column (11) and the second torsion column (12) are opposite.
5. 5. The heat exchange enhancement spoiler column according to claim 4, wherein the first torsion column (11) is at least two of the torsion columns arranged at intervals along the circumferential direction of the virtual axis, the second torsion column (12) is at least two of the torsion columns arranged at intervals along the circumferential direction of the virtual axis, and the at least two first torsion columns (11) and the at least two second torsion columns (12) are arranged in a grid-like manner in a crossing manner.
6. 6. The heat exchange enhanced turbulent column according to any one of claims 1 to 5, wherein the number of the twisted columns (1) of the same spiral direction is at least three.
7. 7. The heat exchange enhanced turbulator column according to any one of claims 1-5, wherein the cross section of the torsion column (1) is circular or polygonal.
8. 8. A turbine blade comprising a cooling chamber and a heat exchange enhancing turbulator according to any one of claims 1 to 7, said heat exchange enhancing turbulator being located within said cooling chamber and being connected between two chamber walls (2) of said cooling chamber arranged opposite each other.
9. 9. The turbine blade according to claim 8, wherein the heat-exchanging-enhanced flow-disturbing columns are arranged in at least two rows at intervals along the first direction, each row comprises a plurality of heat-exchanging-enhanced flow-disturbing columns arranged at intervals along the second direction, and the heat-exchanging-enhanced flow-disturbing columns in two adjacent rows are arranged alternately, wherein the plurality of heat-exchanging-enhanced flow-disturbing columns in one row and the plurality of heat-exchanging-enhanced flow-disturbing columns in the other row are arranged alternately.
10. 10. A gas turbine comprising the turbine blade of claim 8 or 9.

Description

Turbulent flow column, turbine blade and gas turbine for enhancing heat exchange Technical Field The invention relates to the field of blade cooling, in particular to a turbulent flow column, a turbine blade and a gas turbine for enhancing heat exchange. Background In the operation process of the gas turbine, the turbine blades inside the gas turbine are in a high-temperature environment, a cooling cavity for cooling gas to flow is formed in the turbine blades in the related technology, turbulence columns are arranged in the cooling cavity so that cooling gas generates turbulence, and therefore heat exchange and cooling are conducted on the turbine blades, but the turbulence columns in the related technology are arranged in a straight column shape, formed turbulence is simple, and the heat exchange and cooling effect of the turbine blades is poor. Disclosure of Invention The present invention aims to solve at least one of the technical problems in the related art to some extent. For this reason, embodiments of the present invention provide a turbulator post, turbine blade and gas turbine that enhance heat transfer. The turbulent flow column for enhancing heat exchange of the embodiment of the invention comprises: a torsion post in the form of a helix extending around and along a virtual axis, the torsion post being arranged in at least two of the virtual axes collinear. According to the vortex column for enhancing heat exchange, disclosed by the embodiment of the invention, the fluid flowing through the vortex column can generate complex vortex through at least two torsion columns with collinear virtual axes, so that the fluid has a better heat exchange and cooling effect. In some embodiments, the helical directions of the at least two torsion posts are the same and abut. In some embodiments, the helical directions of the at least two torsion posts are the same and are arranged at intervals along the circumference of the virtual axis. In some embodiments, the torsion post comprises a first torsion post and a second torsion post having opposite helical directions. In some embodiments, the first torsion columns are at least two of the first torsion columns arranged at intervals along the circumferential direction of the virtual axis, the second torsion columns are at least two of the second torsion columns arranged at intervals along the circumferential direction of the virtual axis, and the at least two first torsion columns and the at least two second torsion columns are arranged in a grid shape in a crossing manner. In some embodiments, the twist posts of the same helical turn are at least three. In some embodiments, the torsion post is circular or polygonal in cross-section. The turbine blade according to the embodiment of the invention comprises: The cooling cavity and the heat exchange enhancement spoiler column of any one of the embodiments are positioned in the cooling cavity and connected between two cavity wall surfaces which are oppositely arranged in the cooling cavity. According to the turbine blade, the turbulent flow column for enhancing heat exchange is arranged in the cooling cavity, so that the fluid in the cooling cavity generates complex turbulent flow to have a better heat exchange and cooling effect, and therefore the turbine blade has a lower temperature to prolong the service life and can be suitable for higher environmental temperature. In some embodiments, the heat exchange enhancement spoiler columns are arranged in at least two rows at intervals along the first direction, each row includes a plurality of heat exchange enhancement spoiler columns arranged at intervals along the second direction, and in two adjacent rows of heat exchange enhancement spoiler columns, a plurality of heat exchange enhancement spoiler columns of one row and a plurality of heat exchange enhancement spoiler columns of the other row are alternately arranged. A gas turbine according to an embodiment of the present invention includes a turbine blade according to any one of the embodiments described above. The gas turbine of the embodiment of the invention can operate under the working condition of higher temperature by adopting the turbine blade of the embodiment of the invention. Drawings FIG. 1 is a schematic view of a first embodiment of a heat exchange enhanced turbulator column according to an embodiment of the present invention; FIG. 2 is a schematic view of a second embodiment of a heat exchange enhanced turbulator column according to an embodiment of the present invention; FIG. 3 is a schematic view of a third embodiment of a heat exchange enhancing vortex column according to an embodiment of the present invention; FIG. 4 is a schematic view of a fourth embodiment of a heat exchange enhanced turbulator column according to an embodiment of the present invention; FIG. 5 is a schematic view of a fifth embodiment of a heat exchange enhanced turbulator column according to an embodiment of the present inven