CN113931750A - Heat regenerator structure suitable for gas turbine - Google Patents
Heat regenerator structure suitable for gas turbine Download PDFInfo
- Publication number
- CN113931750A CN113931750A CN202111274397.XA CN202111274397A CN113931750A CN 113931750 A CN113931750 A CN 113931750A CN 202111274397 A CN202111274397 A CN 202111274397A CN 113931750 A CN113931750 A CN 113931750A
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- Prior art keywords
- regenerator
- cavity
- air
- heat regenerator
- exhaust gas
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- 239000007789 gas Substances 0.000 abstract description 29
- 239000002912 waste gas Substances 0.000 abstract description 23
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Images
Classifications
-
- 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
- F02C7/08—Heating air supply before combustion, e.g. by exhaust gases
- F02C7/10—Heating air supply before combustion, e.g. by exhaust gases by means of regenerative heat-exchangers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat regenerator structure suitable for a gas turbine, which comprises a heat regenerator casing, a heat regenerator bottom plate and a heat regenerator cavity, wherein the heat regenerator cavity is arranged inside the heat regenerator casing; the heat regenerator cavity is annular and comprises an air cavity and a waste gas cavity, the air cavity and the waste gas cavity are arranged at intervals in sequence, the waste gas cavity is horizontally arranged, one end of the waste gas cavity is a waste gas inlet, and the other end of the waste gas cavity is a waste gas outlet; the vertical setting of air cavity, the inside runner baffle that is equipped with of air cavity, runner baffle one end and air cavity bottom parallel and level to separate air cavity bottom for air inlet and air outlet, the runner baffle other end extends to the air cavity upper end, and with be equipped with the clearance between the air cavity top. The invention integrates the waste gas guiding function and the function of positioning the cavity of the heat regenerator on the heat regenerator casing, so that the whole space is more compact.
Description
Technical Field
The invention relates to the technical field of heat regenerators, in particular to a heat regenerator structure suitable for a gas turbine.
Background
The heat energy in the hot waste gas of the gas turbine is recovered to preheat the air entering the combustion chamber, so that the overall heat conversion efficiency of the gas turbine is improved; as a gas turbine, it is also necessary to reduce the flow resistance as much as possible while recovering heat. The existing heat regenerator structure is generally divided into two types: the first is a pipeline design, namely, the purposes of cold and hot gas separation and heat exchange are realized by a pipeline and cavity dividing mode; and secondly, the cavity is divided by using a thin plate dividing mode to realize cold and hot gas division and heat exchange. Both methods are limited by traditional material reduction and equal material manufacturing, and the structural shape and the combined mode need to be subject to the limitation of the traditional process in design. The problems of poor air tightness, low heat exchange rate, serious thermal stress deformation, overlarge flow resistance and the like caused by the problems are difficult to effectively improve.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a heat regenerator structure which is reasonable in structural design and high in heat exchange rate and is suitable for a gas turbine.
The technical scheme of the invention is as follows:
a heat regenerator structure suitable for a gas turbine comprises a heat regenerator casing, a heat regenerator bottom plate and a heat regenerator cavity, wherein the heat regenerator cavity is arranged inside the heat regenerator casing, and the heat regenerator bottom plate is fixedly arranged at the bottom of the heat regenerator casing; the heat regenerator cavity is annular and comprises an air cavity and a waste gas cavity, the air cavity and the waste gas cavity are arranged at intervals in sequence, the waste gas cavity is horizontally arranged, one end of the waste gas cavity is a waste gas inlet, and the other end of the waste gas cavity is a waste gas outlet; the vertical setting of air cavity, the inside runner baffle that is equipped with of air cavity, runner baffle one end and air cavity bottom parallel and level to separate air cavity bottom for air inlet and air outlet, the runner baffle other end extends to the air cavity upper end, and with be equipped with the clearance between the air cavity top.
Furthermore, the regenerator cavity comprises a group of independent cavities arranged along the circumferential direction, and the cross section of one group of independent cavities is in a fan shape. The independent cavity module is arranged to achieve the purpose of reducing the requirements of process equipment and reducing the thermal stress caused by thermal expansion in the operation of the equipment.
Furthermore, the inner walls of the air cavity and the waste gas cavity are in a three-dimensional staggered wavy structure.
Furthermore, a fin-shaped rib structure is arranged on the inner wall of the wavy structure of the air cavity and the waste gas cavity.
Furthermore, the bottom of the cavity of the heat regenerator is provided with a tongue-and-groove, and the bottom plate of the heat regenerator is provided with a groove matched with the tongue-and-groove, so that the cavity of the heat regenerator is positioned.
Furthermore, the regenerator casing is a cylindrical shell, a positioning bulge extending downwards is arranged at the top of the regenerator casing, and a flange surface connected with a bottom plate of the regenerator is arranged at the bottom of the regenerator casing.
Furthermore, the positioning bulge adopts a stalactite-shaped stretching structure, and the stalactite-shaped structure can realize the dispersed flow guiding effect while realizing the positioning and installation of the cavity of the heat regenerator.
Furthermore, the top surface of the inner part of the heat regenerator casing is provided with a ring groove matched with the end surface of the cavity of the heat regenerator.
Furthermore, the outer edge of the top surface of the heat regenerator casing is provided with an air outlet for exhausting the waste gas outlet of the waste gas chamber.
Furthermore, a first notch matched with the air inlet and a second notch matched with the air outlet are formed in the bottom plate of the heat regenerator, and a third notch matched with the central air inlet of the cavity of the heat regenerator is formed in the center of the bottom plate of the heat regenerator.
The invention has the beneficial effects that:
1) the waste gas guiding function and the function of positioning the cavity of the heat regenerator are integrated on the heat regenerator casing, so that the whole space is more compact, and the occupied area is smaller.
2) The traditional structural frame is abandoned to the regenerator cavity, and the corrugated wall structure is used for improving the heat exchange rate and integrating the rib structure for reducing the flow resistance. And the rib structure also has the functions of improving the overall structural strength and reducing vibration.
3) The structure of heat exchange between the rib structure and the separation room is integrated, non-additive manufacturing is difficult to realize, and the integrated structure also ensures that no hidden danger related to air tightness exists between the cold and hot chambers.
Drawings
FIG. 1 is an exploded view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the internal structure of a regenerator casing according to the present invention;
FIG. 3 is a schematic view of the structure of an independent chamber according to the present invention;
FIG. 4 is a schematic view of the inner wall structure of the regenerator chamber of the present invention;
FIG. 5 is a schematic view of a tongue-and-groove structure according to the present invention;
FIG. 6 is a schematic view of the construction of the bottom plate of the regenerator in accordance with the present invention;
FIG. 7 is a schematic view of the overall half-section configuration of the present invention;
in the figure: 1. a regenerator case; 101. a cylindrical housing; 102. a flange face; 103. positioning the projection; 104. a ring groove; 105. an air outlet; 2. a regenerator chamber; 201. an independent cavity; 202. an air chamber; 203. an exhaust gas chamber; 204. an air inlet; 205. a flow channel baffle; 206. an air outlet; 207. a wave-shaped structure; 208. a fin-shaped rib structure; 209. a tongue-and-groove; 3. a regenerator bottom plate; 301. a second notch; 302. a first notch; 303. a groove; 304. and a notch III.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 7, a regenerator structure suitable for a gas turbine includes a regenerator casing 1, a cylindrical casing 101, a flange surface 102, a positioning protrusion 103, a ring groove 104, an air outlet 105, a regenerator cavity 2, an independent cavity 201, an air chamber 202, an exhaust gas chamber 203, an air inlet 204, a flow channel baffle 205, an air outlet 206, a corrugated structure 207, a fin-shaped rib structure 208, a tongue and groove 209, a regenerator bottom plate 3, a second notch 301, a first notch 302, a groove 303, and a third notch 304.
Example (b):
the heat regenerator of the present invention is designed to consist of three parts: regenerator casing 1, regenerator bottom plate 3, regenerator cavity 2.
The main functions of the regenerator casing 1 casing are to protect the regenerator cavity and its positioning and to guide the exhaust gases.
The regenerator casing 1 comprises a cylindrical shell 101, a positioning bulge 103 extending downwards is arranged at the top of the regenerator casing 1, and the positioning bulge 103 adopts a stalactite-shaped stretching structure; the bottom of the heat regenerator casing 1 is provided with a flange surface 102 connected with a heat regenerator bottom plate; the regenerator casing 1 achieves the purposes of compressing the regenerator cavity and fixing the regenerator by locking the regenerator casing and flanges on the regenerator bottom plate. The top surface inside the heat regenerator casing 1 is provided with a ring groove 104 matched with the end surface of the heat regenerator cavity 2; the outer edge of the top surface of regenerator casing 1 is provided with an outlet 105 for exhaust gas from the exhaust gas outlet of exhaust gas chamber 203.
The main body of the heat regenerator bottom plate 3 is a flat disc structure and takes on the functions of supporting the cavity of the heat regenerator and positioning the cavity of the heat regenerator.
A first notch 302 matched with the air inlet 204 and a second notch 301 matched with the air outlet 206 are formed in the regenerator bottom plate 3, and a third notch 304 matched with a central air inlet hole of the regenerator cavity 2 is formed in the center of the regenerator bottom plate 3; the bottom of the regenerator cavity 2 is provided with a rabbet 209, and the bottom plate 3 of the regenerator is provided with a groove 303 matched with the rabbet 209, thereby achieving the function of positioning the regenerator cavity.
The regenerator cavity is of a modular construction and is divided into 6 independent cavities. Each independent cavity is internally composed of a three-dimensional staggered wavy inner wall structure, a flow channel baffle and a special rib structure. The cavity of the heat regenerator is divided into an air cavity and an exhaust gas cavity, each cavity is separated by an inner wall, and a flow channel baffle which does not extend to the top completely is arranged in the air cavity, so that the airflow direction is twisted by 180 degrees; and the thin-wall structure is integrated with a fin-shaped rib structure.
In particular, the amount of the solvent to be used,
the whole regenerator cavity 2 is annular, the regenerator cavity 2 comprises a group of independent cavities 201 arranged along the circumferential direction, and the cross section of one group of independent cavities is fan-shaped.
The regenerator cavity 2 comprises an air chamber 202 and an exhaust gas chamber 203, the air chamber 202 and the exhaust gas chamber 203 are arranged at intervals in sequence, the exhaust gas chamber 203 is horizontally arranged, one end of the exhaust gas chamber is an exhaust gas inlet, and the other end of the exhaust gas chamber is an exhaust gas outlet; the air chamber 202 is vertically arranged, a flow channel baffle plate 205 is arranged inside the air chamber 202, one end of the flow channel baffle plate 205 is flush with the bottom of the air chamber 202, so that the bottom of the air chamber 202 is divided into an air inlet 204 and an air outlet 206, and the other end of the flow channel baffle plate 205 extends to the upper end of the air chamber 202 and is provided with a gap with the top of the air chamber 202.
The inner walls of the air chamber 202 and the waste gas chamber 203 are both in a three-dimensional staggered wavy structure 207, and fin-shaped rib structures 208 are arranged on the inner walls of the wavy structures 207 of the air chamber 202 and the waste gas chamber 203. The wave-shaped inner wall structure improves the heat exchange rate and integrates a fin-shaped rib structure 208 for reducing the flow resistance, and the rib structure also has the functions of improving the overall structural strength and reducing vibration.
The working principle is as follows:
the cool air enters the outer annular air compartment through the diffuser, rises from the bottom air inlet 204 of the air chamber 202 to the top, turns through the gap between the flow passage baffle 205 and the top of the air chamber 202, exits from the bottom inner annular air outlet 206 of the air chamber 202, and enters the combustion chamber. In the process, hot exhaust gas enters an exhaust gas chamber adjacent to an air chamber after being turned by the heat regenerator casing from the center of the heat regenerator casing, and flows horizontally outwards to form cross flow with the general trend of convection for heat exchange. The heat of the hot exhaust gases is recovered while the cold air entering the combustion chamber is heated. Finally, the hot exhaust gas is redirected on the outer wall of the regenerator casing and is exhausted from the outlet 105.
The invention realizes the integrated production and manufacture of the whole structure of the heat regenerator by utilizing the advantages of additive manufacturing.
Claims (10)
1. The heat regenerator structure suitable for the gas turbine is characterized by comprising a heat regenerator casing (1), a heat regenerator bottom plate (3) and a heat regenerator cavity (2), wherein the heat regenerator cavity (2) is arranged inside the heat regenerator casing (1), and the heat regenerator bottom plate (3) is fixedly arranged at the bottom of the heat regenerator casing (1); the heat regenerator cavity (2) is annular and comprises an air cavity (202) and an exhaust gas cavity (203), the air cavity (202) and the exhaust gas cavity (203) are sequentially arranged at intervals, the exhaust gas cavity (203) is horizontally arranged, one end of the exhaust gas cavity is an exhaust gas inlet, and the other end of the exhaust gas cavity is an exhaust gas outlet; air cavity (202) vertical setting, inside runner baffle (205) that is equipped with of air cavity (202), runner baffle (205) one end and air cavity (202) bottom parallel and level to separate air cavity (202) bottom for air inlet (204) and air outlet (206), runner baffle (205) other end extends to air cavity (202) upper end, and with be equipped with the clearance between air cavity (202) top.
2. The regenerator structure suitable for a gas turbine according to claim 1, wherein the regenerator chamber (2) comprises a set of independent chambers (201) arranged along the circumferential direction, and the cross-sectional shape of the set of independent chambers is a sector.
3. The regenerator structure for a gas turbine according to claim 1, wherein the inner walls of the air chamber (202) and the exhaust gas chamber (203) are in a wave-shaped structure (207) with a staggered structure.
4. The regenerator structure for a gas turbine according to claim 3, wherein the air chamber (202) and the exhaust gas chamber (203) are provided with a fin-shaped rib structure (208) on the inner wall of the corrugated structure (207).
5. The regenerator structure suitable for a gas turbine according to claim 1, wherein the bottom of the regenerator cavity (2) is provided with a rabbet (209), and the regenerator bottom plate (3) is provided with a groove (303) matched with the rabbet (209), so as to achieve the function of positioning the regenerator cavity.
6. The regenerator structure suitable for a gas turbine according to claim 1, wherein the regenerator casing (1) comprises a cylindrical housing (101), and the top of the regenerator casing (1) is provided with a positioning protrusion (103) extending downwards, and the bottom is provided with a flange surface (102) connected with a regenerator bottom plate.
7. The regenerator structure for a gas turbine according to claim 6, wherein the positioning boss (103) is a stretched structure in a shape of a stalactite.
8. The regenerator structure suitable for a gas turbine according to claim 1 or 6, wherein the top surface of the inside of the regenerator casing (1) is provided with an annular groove (104) matched with the end surface of the regenerator cavity (2).
9. The regenerator structure suitable for a gas turbine according to claim 1 or 6, characterized in that the top surface of the regenerator casing (1) is externally provided with an outlet (105) for the exhaust gas from the exhaust gas outlet of the exhaust gas chamber (203).
10. The regenerator structure suitable for a gas turbine according to claim 2, wherein the regenerator bottom plate (3) is provided with a first notch (302) matched with the air inlet (204) and a second notch (301) matched with the air outlet (206), and the center of the regenerator bottom plate (3) is provided with a third notch (304) matched with the central air inlet of the regenerator cavity (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111274397.XA CN113931750A (en) | 2021-10-29 | 2021-10-29 | Heat regenerator structure suitable for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111274397.XA CN113931750A (en) | 2021-10-29 | 2021-10-29 | Heat regenerator structure suitable for gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113931750A true CN113931750A (en) | 2022-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111274397.XA Pending CN113931750A (en) | 2021-10-29 | 2021-10-29 | Heat regenerator structure suitable for gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113931750A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280724A (en) * | 2008-05-16 | 2008-10-08 | 中国航空动力机械研究所 | Backheating type small size gas turbine |
| CN102072023A (en) * | 2010-12-07 | 2011-05-25 | 四川达宇特种车辆制造厂 | Primary surface type regenerator |
| CN203962121U (en) * | 2014-07-15 | 2014-11-26 | 西安统领动力有限公司 | A kind of engine exhaust heat recycling device |
| CN107044347A (en) * | 2017-05-23 | 2017-08-15 | 上海泛智能源装备有限公司 | A kind of regenerator and gas turbine |
| CN109579050A (en) * | 2018-12-29 | 2019-04-05 | 苏州协宏泰节能科技有限公司 | Pincushion plate-fin propeller for turboprop machine heat exchanger |
| CN109579049A (en) * | 2018-12-29 | 2019-04-05 | 苏州协宏泰节能科技有限公司 | The board-like turbogenerator heat exchanger of annular |
| CN109579051A (en) * | 2018-12-29 | 2019-04-05 | 苏州协宏泰节能科技有限公司 | Screen plate propeller for turboprop machine heat exchanger |
| CN111059932A (en) * | 2019-11-20 | 2020-04-24 | 长三角新能源汽车研究院有限公司 | Plate-fin heat regenerator of miniature gas turbine |
-
2021
- 2021-10-29 CN CN202111274397.XA patent/CN113931750A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280724A (en) * | 2008-05-16 | 2008-10-08 | 中国航空动力机械研究所 | Backheating type small size gas turbine |
| CN102072023A (en) * | 2010-12-07 | 2011-05-25 | 四川达宇特种车辆制造厂 | Primary surface type regenerator |
| CN203962121U (en) * | 2014-07-15 | 2014-11-26 | 西安统领动力有限公司 | A kind of engine exhaust heat recycling device |
| CN107044347A (en) * | 2017-05-23 | 2017-08-15 | 上海泛智能源装备有限公司 | A kind of regenerator and gas turbine |
| CN109579050A (en) * | 2018-12-29 | 2019-04-05 | 苏州协宏泰节能科技有限公司 | Pincushion plate-fin propeller for turboprop machine heat exchanger |
| CN109579049A (en) * | 2018-12-29 | 2019-04-05 | 苏州协宏泰节能科技有限公司 | The board-like turbogenerator heat exchanger of annular |
| CN109579051A (en) * | 2018-12-29 | 2019-04-05 | 苏州协宏泰节能科技有限公司 | Screen plate propeller for turboprop machine heat exchanger |
| CN111059932A (en) * | 2019-11-20 | 2020-04-24 | 长三角新能源汽车研究院有限公司 | Plate-fin heat regenerator of miniature gas turbine |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20240621 |