CN109696071B - Plate-fin regenerator of helium turbine - Google Patents
Plate-fin regenerator of helium turbine Download PDFInfo
- Publication number
- CN109696071B CN109696071B CN201811598668.5A CN201811598668A CN109696071B CN 109696071 B CN109696071 B CN 109696071B CN 201811598668 A CN201811598668 A CN 201811598668A CN 109696071 B CN109696071 B CN 109696071B
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- Prior art keywords
- cavity
- regenerator
- plate
- fin
- helium
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- 239000001307 helium Substances 0.000 title claims abstract description 47
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 47
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000005192 partition Methods 0.000 claims description 12
- 238000004378 air conditioning Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 abstract description 14
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a plate-fin heat regenerator of a helium turbine, in particular to a heat regenerator in the helium turbine, which aims to solve the problem that the heat regenerator is arranged in a primary circuit pressure shell and has lower heat exchange efficiency. This plate-fin regenerator of helium gas turbine includes a plurality of regenerator units, set up a plurality of regenerator units on helium gas turbine's casing inner wall circumferencial direction, regenerator unit casing transversal personally submits trapezoidally, the direction of height along trapezoidal cross section sets up first cavity and second cavity, first cavity is the cuboid cavity with the second cavity, set up the baffle between first cavity and the second cavity, be provided with plate-fin core respectively in first cavity and second cavity, the top of casing sets up the steam outlet duct, the bottom is provided with the steam intake pipe, adopt both ends type of admitting air. The invention can effectively solve the problem of uneven helium distribution, improve the heat exchange efficiency of the heat regenerator of the helium turbine and enable the heat regeneration degree to reach 0.95.
Description
Technical Field
The invention relates to a heat regenerator in a helium turbine.
Background
The helium turbine cycle (brayton cycle) power generation, which is an energy conversion system matched with the high-temperature gas cooled reactor, has the advantages of high power generation efficiency, simple system, safety, reliability, good economy and the like, and is the development direction of the field of the high-temperature gas cooled reactor at present. The key factors affecting the efficiency of the brayton cycle include the inlet and outlet temperatures of the core, the adiabatic efficiency of the compressor and turbine, the degree of heat return, the pressure ratio, and the rate of pressure loss of the cycle system. The heat regenerator is a key part for the indirect circulation of the helium turbine of the high-temperature gas cooled reactor and the application of high-temperature process heat. The heat regenerator belongs to the pressure boundary of a primary loop and transfers the heat of helium gas with the temperature of a reactor core outlet reaching 900-l 000 ℃ to the helium gas of a secondary loop, thereby improving the thermodynamic cycle efficiency. The heat regenerator is characterized by high power and compact structure, and the heat regenerator is arranged in a loop pressure shell and has limited volume.
Disclosure of Invention
The invention aims to solve the problem that the heat regenerator is arranged in a primary circuit pressure shell and the heat exchange efficiency of the heat regenerator is low, and provides a plate-fin heat regenerator of a helium gas turbine.
The plate-fin heat regenerator of the helium turbine comprises a plurality of heat regenerator units, wherein the plurality of heat regenerator units are arranged in the circumferential direction of the inner wall of a shell of the helium turbine, each heat regenerator unit comprises a shell, a first cold air inlet pipe, a second cold air inlet pipe, a first cold air outlet pipe, a second cold air outlet pipe, a hot air inlet pipe and a partition plate, the cross section of the shell is trapezoidal, a first cavity and a second cavity are arranged in the height direction of the trapezoidal cross section, the first cavity and the second cavity are cuboid cavities, the partition plate is arranged between the first cavity and the second cavity, and plate-fin cores are respectively arranged in the first cavity and the second cavity;
the top of casing set up the steam outlet duct, the bottom of casing is provided with the steam intake pipe, first cavity upper portion sets up first air conditioning intake pipe, first cavity lower part sets up first air conditioning outlet duct, second cavity upper portion sets up the second air conditioning intake pipe, the second cavity lower part sets up the second air conditioning outlet duct.
The helium turbine regenerator is arranged between a compressor and a turbine of the helium turbine and is limited by the size of an outer shell, and meanwhile, the regenerator is arranged into a plurality of unit modules and uniformly arranged in the helium turbine shell in consideration of the limitation of a flow inlet pipeline of high-temperature helium gas entering the turbine from a reactor and a pipeline of low-temperature helium gas entering and exiting the regenerator.
In order to enable helium to flow more uniformly in the core section of the regenerator, the structure of the regenerator unit is designed into a two-end air inlet type, and each regenerator unit is divided into two modules (namely the modules formed by the cores in the first cavity and the second cavity) which are separated by a partition plate. Although the design is complex in structural arrangement, the problem of uneven helium distribution can be effectively solved, the heat exchange efficiency of the helium turbine regenerator is improved, and the heat regeneration degree reaches 0.95.
Drawings
FIG. 1 is a schematic diagram of a regenerator unit;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a schematic view of an arrangement structure of an inner plate fin regenerator of a helium gas turbine;
FIG. 4 is a schematic cross-sectional view of a regenerator unit;
fig. 5 is a partial structural view of the core.
Detailed Description
The first embodiment is as follows: the plate-fin heat regenerator of the helium turbine of the embodiment comprises a plurality of heat regenerator units 1, the plurality of heat regenerator units 1 are arranged in the circumferential direction of the inner wall of a casing of the helium turbine, each heat regenerator unit 1 comprises a casing 1-3, a first cold air inlet pipe 2-1, a second cold air inlet pipe 2-2, a first cold air outlet pipe 3-1, a second cold air outlet pipe 3-2, a hot air outlet pipe 4, a hot air inlet pipe 5 and a partition plate 6, the cross section of the shell 1-3 is trapezoidal, a first cavity 1-1 and a second cavity 1-2 are arranged along the height direction of the trapezoidal cross section, the first cavity 1-1 and the second cavity 1-2 are cuboid cavities, a partition plate 6 is arranged between the first cavity 1-1 and the second cavity 1-2, plate-fin cores are respectively arranged in the first cavity 1-1 and the second cavity 1-2;
the top of the shell 1-3 is provided with a hot air outlet pipe 4, the bottom of the shell 1-3 is provided with a hot air inlet pipe 5, the upper part of the first cavity 1-1 is provided with a first cold air inlet pipe 2-1, the lower part of the first cavity 1-1 is provided with a first cold air outlet pipe 3-1, the upper part of the second cavity 1-2 is provided with a second cold air inlet pipe 2-2, and the lower part of the second cavity 1-2 is provided with a second cold air outlet pipe 3-2.
The heat regenerator unit shell of the embodiment is also internally provided with the flow deflectors, so that the fluid is uniformly distributed into each flow channel of the heat exchanger core.
In the embodiment, the second cold air inlet pipe 2-2 and the second cold air outlet pipe 3-2 are positioned on the side surface of the heat regenerator unit facing the circle center of the helium turbine, and the first cold air inlet pipe 2-1 and the first cold air outlet pipe 3-1 are positioned on the side surface of the heat regenerator unit back to the circle center of the helium turbine.
In the embodiment, working media of the cold and hot sections are helium, and the difference of the heat convection coefficients is small, so that a runner arrangement mode that one hot runner is separated from one cold runner is adopted.
The second embodiment is as follows: the difference between the first embodiment and the second embodiment is that 16 to 18 regenerator units 1 are arranged in the circumferential direction of the inner wall of the casing of the helium gas turbine.
The third concrete implementation mode: the difference between this embodiment and the first or second embodiment is that the thickness of the partition plate 6 in the regenerator unit 1 is 5 mm.
The fourth concrete implementation mode: the difference between this embodiment and one of the first to third embodiments is that the plate-fin core is a zigzag fin or a straight fin.
The fifth concrete implementation mode: the fourth difference between this embodiment and the fourth embodiment is that the thickness of the fin is 0.25 mm.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is that the flow channels of the plate-fin core are in counterflow.
The seventh embodiment: the present embodiment is different from one of the first to sixth embodiments in that the size of the cross section of the first cavity 1-1 is 550mm × 398 mm.
The specific implementation mode is eight: the seventh embodiment is different from the seventh embodiment in that the size of the cross section of the second cavity 1-2 is 434mm × 430 mm.
Example (b): the plate-fin heat regenerator of the helium turbine of the embodiment comprises 18 heat regenerator units 1, wherein the 18 heat regenerator units 1 are arranged in the circumferential direction of the inner wall of a shell of the helium turbine, each heat regenerator unit 1 comprises a shell 1-3, a first cold air inlet pipe 2-1, a second cold air inlet pipe 2-2, a first cold air outlet pipe 3-1, a second cold air outlet pipe 3-2, a hot air outlet pipe 4, a hot air inlet pipe 5 and a partition plate 6, the cross section of the shell 1-3 is trapezoidal, a first cavity 1-1 and a second cavity 1-2 are arranged along the height direction of the trapezoidal cross section, the first cavity 1-1 and the second cavity 1-2 are cuboid cavities, a partition plate 6 is arranged between the first cavity 1-1 and the second cavity 1-2, plate-fin cores are arranged in the first cavity 1-1 and the second cavity 1-2;
the top of the shell 1-3 is provided with a hot air outlet pipe 4, the bottom of the shell 1 is provided with a hot air inlet pipe 5, the upper part of the first cavity 1-1 is provided with a first cold air inlet pipe 2-1, the lower part of the first cavity 1-1 is provided with a first cold air outlet pipe 3-1, the upper part of the second cavity 1-2 is provided with a second cold air inlet pipe 2-2, and the lower part of the second cavity 1-2 is provided with a second cold air outlet pipe 3-2.
The schematic diagram of the local structure of the plate-fin core body in this embodiment is shown in fig. 5, the core body is formed by sequentially stacking a plurality of plate sheets, wherein 7-1 represents a hot helium gas flow channel, and the height of the rectangular fin is 4 mm; 7-2 represents a cold helium gas flow channel, the height of the rectangular fin is 2.5mm, and the thickness of the core body partition plate is 0.6 mm.
The technical parameters of the plate-fin regenerator of the helium turbine of the embodiment are shown in the following table 1;
TABLE 1
The heat exchange efficiency of the helium turbine heat regenerator in the embodiment can reach 95%.
Claims (8)
1. The plate-fin heat regenerator of the helium turbine comprises a plurality of heat regenerator units (1), and the plurality of heat regenerator units (1) are arranged in the circumferential direction of the inner wall of a casing of the helium turbine, and is characterized in that each heat regenerator unit (1) comprises a shell (1-3), a first cold air inlet pipe (2-1), a second cold air inlet pipe (2-2), a first cold air outlet pipe (3-1), a second cold air outlet pipe (3-2), a hot air outlet pipe (4), a hot air inlet pipe (5) and a partition plate (6), the cross section of the shell (1-3) is trapezoidal, a first cavity (1-1) and a second cavity (1-2) are arranged in the height direction of the trapezoidal cross section, and the first cavity (1-1) and the second cavity (1-2) are cuboid cavities, a partition plate (6) is arranged between the first cavity (1-1) and the second cavity (1-2), and plate-fin cores are respectively arranged in the first cavity (1-1) and the second cavity (1-2);
the top of casing (1-3) set up steam outlet duct (4), the bottom of casing (1-3) is provided with steam intake pipe (5), first cavity (1-1) upper portion sets up first air conditioning intake pipe (2-1), first cavity (1-1) lower part sets up first air conditioning outlet duct (3-1), second cavity (1-2) upper portion sets up second air conditioning intake pipe (2-2), second cavity (1-2) lower part sets up second air conditioning outlet duct (3-2).
2. The plate-fin regenerator of a helium turbine as claimed in claim 1, wherein 16-18 regenerator units (1) are arranged in the circumferential direction of the inner wall of the casing of the helium turbine.
3. Plate-fin regenerator for helium turbine according to claim 1, characterized in that the thickness of the partition wall (6) in the regenerator unit (1) is 5 mm.
4. The plate fin regenerator for a helium turbine as claimed in claim 1, wherein said plate fin core is a zigzag fin or a straight fin.
5. The plate fin regenerator for a helium turbine as claimed in claim 4, wherein the fins have a thickness of 0.25 mm.
6. The plate fin regenerator for a helium turbine as claimed in claim 1, wherein the flow channels of the plate fin core are in counterflow.
7. The plate fin regenerator for a helium turbine as claimed in claim 1, wherein the dimensions of the cross-section of the first cavity (1-1) are 550mm x 398 mm.
8. The plate fin regenerator for a helium turbine as claimed in claim 7, wherein the dimensions of the cross-section of the second cavity (1-2) are 434mm x 430 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598668.5A CN109696071B (en) | 2018-12-26 | 2018-12-26 | Plate-fin regenerator of helium turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598668.5A CN109696071B (en) | 2018-12-26 | 2018-12-26 | Plate-fin regenerator of helium turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109696071A CN109696071A (en) | 2019-04-30 |
| CN109696071B true CN109696071B (en) | 2020-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811598668.5A Active CN109696071B (en) | 2018-12-26 | 2018-12-26 | Plate-fin regenerator of helium turbine |
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| CN (1) | CN109696071B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567299A (en) * | 2019-08-23 | 2019-12-13 | 中国人民解放军总参谋部第六十研究所 | Original surface heat regenerator heat exchange core |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128703Y2 (en) * | 1972-01-31 | 1976-07-20 | ||
| JPS5227710Y2 (en) * | 1972-04-18 | 1977-06-24 | ||
| CN100402815C (en) * | 2006-10-13 | 2008-07-16 | 西安交通大学 | A Processing Technology of Annular Primary Surface Regenerator for Micro Gas Turbine |
| KR20130021551A (en) * | 2011-08-23 | 2013-03-06 | 한국기계연구원 | Gas turbine for recuperator heat exchanger |
| ES2805086T3 (en) * | 2014-12-18 | 2021-02-10 | Zehnder Group Int Ag | Heat exchanger and aviation apparatus with the same |
| CN108979864A (en) * | 2018-08-08 | 2018-12-11 | 北京航空航天大学 | A kind of miniature gas turbine and regenerator |
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- 2018-12-26 CN CN201811598668.5A patent/CN109696071B/en active Active
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