CN209925033U - Turbulence column structure for enhancing heat exchange of turbine blade - Google Patents
Turbulence column structure for enhancing heat exchange of turbine blade Download PDFInfo
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- CN209925033U CN209925033U CN201920379259.XU CN201920379259U CN209925033U CN 209925033 U CN209925033 U CN 209925033U CN 201920379259 U CN201920379259 U CN 201920379259U CN 209925033 U CN209925033 U CN 209925033U
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- 230000002708 enhancing effect Effects 0.000 title claims description 11
- 230000035515 penetration Effects 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 230000001965 increasing effect Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 18
- 238000001816 cooling Methods 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a vortex column structure for turbine blade reinforces heat transfer, including vortex column body, vortex column body is the cylinder of a transversal personally submitting water droplet form, and the one end of water droplet form is the circular arc end, and the other end is the summit end, be provided with the penetration hole that transversely runs through the circular arc end of water droplet form and summit end on the vortex column body, just the penetration hole is located the fore-and-aft central height of vortex column body. Compared with the traditional turbulence column, on one hand, the utility model can lead part of gas to directly pass through the turbulence column through the through holes, so that the gas can more smoothly pass through the turbulence column, thereby reducing the pressure loss of the gas; on the other hand, the gas flows out through the penetration holes and then is mixed with the wake airflow of the water-drop turbulence column, so that the turbulence degree of the gas is increased, the heat transfer performance is improved, and the heat transfer characteristic of the turbine blade is enhanced.
Description
Technical Field
The invention belongs to the technical field of heat transfer enhancement of turbine blades of gas turbines (including ground gas turbines and aero-engines), and particularly relates to a turbulence column structure for heat transfer enhancement of turbine blades.
Background
The gas turbine has the characteristics of small volume, high response speed, high efficiency, high power and the like, and is widely applied to the fields of aerospace, ships, power generation of power plants and other various industries at present. Increasing the turbine inlet temperature of a gas turbine is one of the key technologies for improving the performance of the gas turbine. The increasing gas temperatures severely degrade the operating environment of the high temperature components of the gas turbine power plant. The efficient cooling technology can prolong the service life of the heated part, use more economical materials to reduce cost, effectively reduce the cooling air quantity and reduce the power loss of the engine to improve the heat efficiency and the thrust-weight ratio of the engine.
The turbulence column is used as an important heat exchange strengthening component of the turbine blade of the gas turbine, and is used for increasing the turbulence degree of cooling airflow and further strengthening the heat exchange strength in the cooling channel; meanwhile, the cooling channels also enhance the heat transfer uniformity in the spanwise direction and reduce the thermal gradient of the wall surface. Therefore, the internal turbulator column structure is an important part of the cooling system, and plays a very important role. And thus are widely used in gas turbine designs. The method is characterized in that the flow and heat exchange in a rectangular channel provided with 4 turbulence column cross-row arrays in circular, quasi-drop, elliptical and drop shapes are subjected to three-dimensional numerical simulation by using FLUENT-CFD commercial software, so that the basic characteristics of a flow field, a pressure field and local convection heat exchange coefficient distribution in the channel are obtained, and the heat exchange characteristics and the pressure loss characteristics of the turbulence column channel are subjected to comparative analysis. The calculation result shows that: the pressure loss coefficients of the rectangular channel provided with the water drop-shaped turbulence column array are respectively 44.1%, 70.5% and 79.8% of those of the former 3, the average convective heat transfer coefficient of the constant heat flow wall surface is respectively reduced by 18.5%, 12.4% and 3.8% relative to that of the former 3, and the reduction amplitude of the pressure loss is obviously higher than the reduction of the enhanced heat transfer. The water drop-shaped turbulence column is an ideal structure which has comprehensive performance and replaces a conventional circular turbulence column.
Disclosure of Invention
In order to reduce the pressure loss coefficient of the turbulence column in the prior art, strengthen the heat exchange and overcome the restriction of the existing turbulence, the invention provides a turbulence column structure for strengthening the heat exchange of turbine blades, which is mainly characterized in that a straight-through cylindrical hole is arranged on a water drop type turbulence column.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a vortex column structure for turbine blade reinforces heat transfer, includes vortex column body 1, vortex column body 1 is the cylinder of a transversal personally submitting the water droplet form, and the one end of water droplet form is the circular arc end, and the other end is the summit end, be provided with the penetration hole 2 that transversely runs through the circular arc end of water droplet form and summit end on vortex column body 1, just penetration hole 2 is located vortex column body 1 fore-and-aft central height.
Further, the turbulence column body 1 is provided with only one through hole 2.
Further, the through hole 2 is a cylindrical through hole arranged transversely.
Further, the central axis of the penetrating hole 2 is perpendicular to the longitudinal direction of the spoiler column body 1.
Further, the central axis of the penetrating hole 2 is as high as the longitudinal center of the spoiler column body 1.
Further, the cylinder includes top surface 11, bottom surface 12 and is used for connecting the lateral wall of top surface 11 and bottom surface 12, the lateral wall includes arc surface 13, first connection face 14 and second connection face 15, the one end of first connection face 14 and second connection face 15 meets through arc surface 13, the other end interconnect of first connection face 14 and second connection face 15, and the junction is intersection line 16.
Further, the through hole 2 transversely penetrates through the arc surface 13 and the center of the intersection line 16.
Further, when the airflow passes through the turbulence column body 1, a part of the airflow is divided by the arc surface 13 and flows along the first connection surface 14 or the second connection surface 15, another part of the airflow directly flows through the penetration hole 2 through the arc surface 13, and finally the two parts of the airflow are mixed from the junction line 16.
Further, including a plurality of vortex post body 1, a plurality of vortex post body 1 is array arrangement in rectangular channel, and vortex post body 1 of adjacent row is crisscross to be arranged, and array's row spacing and column spacing are 12 mm.
Further, the diameter and the height of the through holes 2 on the spoiler column body 1 of each row are the same.
Compared with the prior art, the invention has the following beneficial effects:
compared with the traditional turbulence column, on one hand, part of gas can directly pass through the turbulence column through the through holes, so that the gas can more smoothly pass through the turbulence column, and the pressure loss of the gas is reduced; on the other hand, the gas flows out through the penetration holes and then is mixed with the wake airflow of the water-drop turbulence column, so that the turbulence degree of the gas is increased, the heat transfer performance is improved, and the heat transfer characteristic of the turbine blade is enhanced.
Drawings
FIG. 1 is a schematic structural view of a spoiler pillar body according to the present invention;
FIG. 2 is a schematic layout of a plurality of spoiler cylinder bodies in a rectangular channel;
wherein: 1-a spoiler column body, 11-a top surface, 12-a bottom surface, 13-a circular arc surface, 14-a first connecting surface, 15-a second connecting surface, 16-a junction line, 2-a through hole, 3-a rectangular channel.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1 and 2, a vortex column structure for turbine blade reinforces heat transfer, including vortex column body 1, vortex column body 1 is a cylinder of a transversal personally submitting the drop form, and the one end of drop form is the circular arc end, and the other end is the summit end, be provided with the penetration hole 2 that transversely runs through the circular arc end of drop form and summit end on the vortex column body 1, just penetration hole 2 is located vortex column body 1 fore-and-aft central height.
Preferably, the turbulence column body 1 has only one through-going hole 2.
Specifically, the penetrating hole 2 is a cylindrical through hole arranged transversely, the central axis of the penetrating hole 2 is perpendicular to the longitudinal direction of the spoiler column body 1, and the central axis of the penetrating hole 2 is as high as the longitudinal center of the spoiler column body 1.
Specifically, the column body comprises a top surface 11, a bottom surface 12 and a side wall for connecting the top surface 11 and the bottom surface 12, wherein the side wall comprises an arc surface 13, a first connecting surface 14 and a second connecting surface 15, one end of the first connecting surface 14 and one end of the second connecting surface 15 are connected through the arc surface 13, the other end of the first connecting surface 14 and the other end of the second connecting surface 15 are connected with each other, and the connecting position is a meeting line 16. The through-hole 2 extends transversely through the circular arc surface 13 and the centre of the intersection line 16.
As a preferred scheme, the flow disturbing column comprises a plurality of flow disturbing column bodies 1, the plurality of flow disturbing column bodies 1 are arranged in a rectangular channel in an array manner, the flow disturbing column bodies 1 in adjacent rows are arranged in a staggered manner, and the row spacing and the column spacing of the array manner are both 12 mm. The diameter and the height of the penetrating holes 2 in the turbulence column bodies 1 in each row are the same, specifically, as shown in fig. 2, 5 turbulence column bodies 1 are arranged in 2 rows, two rows of turbulence column bodies are arranged in a staggered manner, the row distance is 12mm, and the distance between adjacent turbulence column bodies in the same row is also 12 mm.
When the invention is used, when air flow passes through the turbulence column body 1, one part of the air flow is divided by the arc surface 13 and flows along the first connecting surface 14 or the second connecting surface 15, the other part of the air flow directly flows through the penetration hole 2 through the arc surface 13, and finally the two parts of the air flow are mixed from the confluence line 16. Specifically, when the cooling gas passes through the rectangular channel 3, most of the gas bypasses the turbulence column and flows along the rectangular channel 3, a small part of the gas flows into the through holes 2 formed in the turbulence column body 1, is mixed with the gas in the rectangular channel 3 after flowing out of the through holes 2, and finally, all the mixed gas flows out along the rectangular channel 3.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a vortex column structure for turbine blade reinforces heat transfer which characterized in that: including vortex post body (1), vortex post body (1) is a cylinder of a transversal personally submitting the drop form, and the one end of drop form is the circular arc end, and the other end is the summit end, be provided with on vortex post body (1) and transversely run through circular arc end and the penetrating hole (2) of summit end of drop form, just penetrating hole (2) are located vortex post body (1) fore-and-aft central height.
2. The turbulator column structure for enhancing heat exchange of turbine blades of claim 1, wherein: the turbulence column body (1) is provided with only one through hole (2).
3. The turbulator column structure for enhancing heat exchange of turbine blades of claim 1, wherein: the penetrating hole (2) is a cylindrical through hole which is transversely arranged.
4. The turbulator column structure for enhancing heat exchange of turbine blades of claim 1, wherein: the central axis of the penetrating hole (2) is vertical to the longitudinal direction of the turbulence column body (1).
5. The turbulator column structure for enhancing heat exchange of turbine blades of claim 1, wherein: the central axis of the penetrating hole (2) is as high as the longitudinal center of the turbulence column body (1).
6. The turbulator column structure for enhancing heat exchange of turbine blades of claim 1, wherein: the cylinder includes top surface (11), bottom surface (12) and is used for connecting the lateral wall of top surface (11) and bottom surface (12), the lateral wall includes arc surface (13), first connecting surface (14) and second connection face (15), the one end that first connecting surface (14) and second connection face (15) meets through arc surface (13), the other end interconnect of first connecting surface (14) and second connection face (15), the junction is intersection line (16).
7. The turbulator column structure for enhancing heat exchange of turbine blades of claim 6, wherein: the penetrating hole (2) transversely penetrates through the centers of the arc surface (13) and the intersection line (16).
8. The turbulator column structure for enhancing heat exchange of turbine blades of claim 6, wherein: when the airflow passes through the turbulence column body (1), one part of the airflow is divided by the arc surface (13) and flows along the first connecting surface (14) or the second connecting surface (15), the other part of the airflow directly flows through the penetration hole (2) through the arc surface (13), and finally the two parts of the airflow are mixed from the junction line (16).
9. The turbulator column structure for enhancing heat exchange of turbine blades of claim 1, wherein: the rectangular channel turbulence column comprises a plurality of turbulence column bodies (1), wherein the plurality of turbulence column bodies (1) are arranged in a rectangular channel in an array manner, the turbulence column bodies (1) in adjacent rows are arranged in a staggered manner, and the row spacing and the column spacing of the array manner are both 12 mm.
10. The turbulator post structure for enhancing heat exchange of turbine blades of claim 2, wherein: the diameter and the height of the penetrating holes (2) on the turbulence column bodies (1) in each row are the same.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920379259.XU CN209925033U (en) | 2019-03-25 | 2019-03-25 | Turbulence column structure for enhancing heat exchange of turbine blade |
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| CN201920379259.XU CN209925033U (en) | 2019-03-25 | 2019-03-25 | Turbulence column structure for enhancing heat exchange of turbine blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944645A (en) * | 2019-03-25 | 2019-06-28 | 南京航空航天大学 | A kind of flow-disturbing rod structure for turbo blade enhanced heat exchange |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944645A (en) * | 2019-03-25 | 2019-06-28 | 南京航空航天大学 | A kind of flow-disturbing rod structure for turbo blade enhanced heat exchange |
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