CN112240568B - Water-cooling cylindrical rectifier for stable combustion of heater - Google Patents
Water-cooling cylindrical rectifier for stable combustion of heater Download PDFInfo
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- CN112240568B CN112240568B CN202010956449.0A CN202010956449A CN112240568B CN 112240568 B CN112240568 B CN 112240568B CN 202010956449 A CN202010956449 A CN 202010956449A CN 112240568 B CN112240568 B CN 112240568B
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- water
- cooling
- head cover
- cooling water
- heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/16—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration with devices inside the flame tube or the combustion chamber to influence the air or gas flow
- F23R3/18—Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants
Abstract
The invention discloses a water-cooling cylindrical rectifier for stable combustion of a heater, which comprises: the water-cooling head cover, the support plate and the connecting flange; the water-cooling head cover is a circular truncated cone-shaped cylindrical structure with an annular gap formed by coaxially welding an inner cylinder and an outer cylinder, the outer circumferential surface of the water-cooling head cover is coaxially welded at one axial end of the connecting flange through more than one pair of support plates, and the shape of the water-cooling head cover can rectify incoming flow at the small end of the water-cooling head cover; wherein, set up more than a pair of cooling water passageway I along circumference on the flange, and every cooling water passageway I corresponds with a extension board along radial distribution and be connected, simultaneously, it communicates with the cooling water passageway II that sets up in corresponding extension board, and the cooling water that corresponds on the flange is followed respectively to more than the same kind cooling water flows in, through the cooling water passageway II that its homonymy corresponds, walks around the inside water-cooling hood that communicates with every cooling water passageway II, from the cooling water passageway II and the I mesocycle outflow of cooling water passageway of opposite side to take away high-temperature gas's heat.
Description
Technical Field
The invention relates to the technical field of stable combustion, in particular to a water-cooling cylindrical rectifier for stable combustion of a heater.
Background
The high-flow high-enthalpy air heater for the ground test of the hypersonic engine has the characteristics of high gas temperature (about 2100K), high pressure (highest 11 Mpa), oxygen-enriched combustion, large size and the like, the heater is easy to generate the phenomenon of poor gas stability due to the characteristics, and the heater is easy to ablate, so that the structure of a heater rectifier working for a long time (more than or equal to 300 s) needs to be optimized, and overheating ablation is prevented.
Disclosure of Invention
In view of the above, the invention provides a water-cooling cylindrical rectifier for stable combustion of a heater, which adopts a cooling water circumfluence cooling mode, can effectively enhance the safety and reliability of the heater and ensure the stability of combustion work of a large-size heater; meanwhile, the shape of the cooling head cover can achieve a good rectification effect on high-temperature gas sprayed from the combustion chamber.
The technical scheme of the invention is as follows: a water-cooled barrel rectifier for heater stabilized combustion, comprising: the water-cooling head cover, the support plate and the connecting flange;
the water-cooling head cover is a circular truncated cone-shaped cylindrical structure with an annular gap and formed by coaxially welding an inner cylinder body and an outer cylinder body, the outer circumferential surface of the water-cooling head cover is coaxially welded at one axial end of the connecting flange through more than one pair of supporting plates, and the shape of the water-cooling head cover can rectify the incoming flow of the small end of the water-cooling head cover;
wherein, set up more than a pair of cooling water passageway I along circumference on the flange, and every cooling water passageway I corresponds with a extension board along radial distribution and be connected, simultaneously, it communicates with the cooling water passageway II that sets up in corresponding extension board, and the cooling water that corresponds on the flange is followed respectively to more than the same kind cooling water flows in, through the cooling water passageway II that its homonymy corresponds, walks around the inside water-cooling hood that communicates with every cooling water passageway II, from the cooling water passageway II and the I mesocycle outflow of cooling water passageway of opposite side to take away high-temperature gas's heat.
Preferably, all the support plates are uniformly distributed along the circumferential direction of the water-cooled head cover.
Preferably, the method further comprises the following steps: and the reinforcing rib plate is arranged between the inner barrel and the outer barrel and used for reinforcing the water-cooling head cover.
Preferably, more than two small holes are processed on the reinforcing rib plate and used for enhancing the circulating strength of cooling water in the water-cooling head cover.
Preferably, the number of the reinforcing ribs is the same as that of the support plates, and the mounting positions of the reinforcing ribs in the water-cooling head cover correspond to those of the support plates.
Preferably, the water-cooling hood, the support plate, the connecting flange and the reinforcing rib plate are made of stainless steel.
Preferably, the inner cylinder body of the water-cooling hood is flanged outwards, the outer cylinder body is flanged inwards, and the flanges of the inner cylinder body and the outer cylinder body are butted, so that the circumferential clearance between the inner cylinder body and the outer cylinder body can be increased.
Has the beneficial effects that:
1. according to the water-cooling cylindrical rectifier, the cooling effect of the structural part in the heater can be effectively enhanced by adopting a cooling mode that cooling water flows around and cools through the connecting flange, the support plate and the cooling head cover, so that the structural part is protected from being damaged, the safety and reliability of the heater are enhanced, and the stability of the combustion work of a large-size heater is ensured; meanwhile, the shape of the cooling head cover can achieve a good rectification effect on high-temperature gas sprayed from the combustion chamber.
2. The water-cooling head cover is internally provided with the reinforcing rib plate, so that the connection strength between the inner cylinder and the outer cylinder of the water-cooling head cover can be effectively enhanced, and the water-cooling head cover is reinforced.
3. According to the invention, the small holes are formed in the reinforcing rib plate, so that the overflowing speed of cooling water in the water-cooling head cover can be effectively increased, the circulating heat exchange strength of the cooling water in the water-cooling head cover is further enhanced, and a better heat exchange effect is achieved.
4. According to the water-cooling head cover, the arrangement and connection of the flanging between the inner cylinder body and the outer cylinder body can effectively increase the annular clearance for cooling water circulation between the inner cylinder body and the outer cylinder body, and meanwhile, the structural size and the weight of the water-cooling head cover cannot be obviously increased.
Drawings
Fig. 1 is a front view of a water-cooled cylindrical rectifier according to the present invention.
Fig. 2 isbase:Sub>A schematic viewbase:Sub>A-base:Sub>A in fig. 1.
The device comprises a water-cooling head cover 1, a support plate 2, a connecting flange 3, a reinforcing rib plate 4, cooling water channels I and cooling water channels II 5 and 6.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The embodiment provides a water-cooling cylindrical rectifier for stable combustion of a heater, which adopts a cooling water circumfluence cooling mode, can effectively enhance the safety and reliability of the heater and ensure the stability of combustion work of a large-size heater; meanwhile, the shape of the cooling head cover can achieve a good rectification effect on high-temperature gas sprayed from the combustion chamber.
As shown in fig. 1 and 2, the water-cooled cylindrical rectifier includes: the water-cooled head cover comprises a water-cooled head cover 1, a support plate 2 and a connecting flange 3.
Connection relation of the water-cooling cylindrical rectifier: the outer circumferential surface of the water-cooling head cover 1 is coaxially welded at one axial end of a connecting flange 3 through four support plates 2 (the four support plates 2 are uniformly distributed along the circumferential direction of the water-cooling head cover 1), the end of the connecting flange 3 is connected with an expansion section of a heater, and the other end of the connecting flange is connected with a stable section of the heater; the small end of the expansion section faces the combustion chamber, so that the water-cooled head cover 1 and the support plate 2 are both positioned in the expansion section, and high-temperature gas sprayed from the combustion chamber enters the expansion section and flows to the stable section of the heater after being rectified by the water-cooled head cover 1 in the rectifier;
four cooling water channels I5 are uniformly arranged on the connecting flange 3 along the circumferential direction and are respectively distributed along the radial direction, each cooling water channel I5 is correspondingly connected with one support plate 2 and is communicated with a cooling water channel II 6 arranged in the corresponding support plate 2, two paths of cooling water respectively flow in from two adjacent cooling water channels I5 on the connecting flange 3 and circularly flow out from the cooling water channels II 6 and the cooling water channels I5 on the opposite sides respectively through the cooling water channels II 6 corresponding to the same side, so that the heat of high-temperature gas is taken away, the combustion stability of the heater can be greatly improved, and the service life of equipment is greatly prolonged;
wherein, the round platform form tubular structure that has the hoop clearance that water-cooling hood 1 forms for the coaxial welding of the interior outer barrel of round platform shape, and its tip towards the combustion chamber, cooling water passageway II 6 among four extension boards 2 respectively with the inside intercommunication of water-cooling hood 1 to can guarantee that this rectifier has inlet channel and the exhalant canal of two pairs of mutual intercommunications, every inlet channel and an exhalant canal are along radial relative, and inlet channel and exhalant canal all include: cooling water passageway I5 and cooling water passageway II 6.
Further, still include: and the reinforcing rib plate 4 is arranged between the inner barrel and the outer barrel and used for enhancing the connection strength between the inner barrel and the outer barrel of the water-cooling head cover 1 so as to reinforce the water-cooling head cover 1.
Furthermore, more than two small holes are processed on the reinforcing rib plate 4 and used for increasing the overflowing speed of cooling water, so that the circulating heat exchange strength of the cooling water in the water-cooling head cover 1 is enhanced, and a better heat exchange effect is achieved.
Furthermore, the number of the reinforcing rib plates 4 is consistent with that of the support plates 2, and the installation positions of the reinforcing rib plates in the water-cooling head cover 1 correspond to those of the support plates 2, so that the internal and external tension of the water-cooling head cover 1 can be effectively balanced, and the water-cooling head cover 1 is effectively prevented from being damaged.
Further, the inner cylinder of the water-cooling head cover 1 is flanged outwards, the outer cylinder is flanged inwards, and the flanges of the inner cylinder and the outer cylinder are butted, so that the annular gap for cooling water circulation between the inner cylinder and the outer cylinder is effectively increased, and the structural size and the weight of the water-cooling head cover 1 cannot be obviously increased.
Furthermore, the water-cooling head cover 1, the support plate 2, the connecting flange 3 and the reinforcing rib plate 4 are made of low-cost stainless steel.
The working principle of the water-cooling cylindrical rectifier is as follows: the heater has large flow, so the size of the heater is correspondingly increased, but the phenomenon of unstable combustion is easy to occur under the working conditions of high temperature and high pressure, and a water cooling design needs to be carried out on a rectifier of the heater;
specifically, the method comprises the following steps: two routes cooling water gets into from two routes cooling water passageway I5 on flange 3, through II 6 of the cooling water passageway on extension board 2 and inside water-cooling hood 1, flow in corresponding cooling water passageway I5 from II 6 of the cooling water passageway on two extension boards 2 of opposite side again, finally flow out, through the circulation reinforcing rectifier high temperature, the hot protective capacities under the high pressure, the large-traffic condition of cooling water, can strengthen the hot protective capacities of high enthalpy heater by a wide margin, guaranteed that the heater can be stable work for a long time under the high temperature, high pressure, the large-traffic condition.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A water-cooled barrel rectifier for heater stabilized combustion, comprising: the water-cooling head cover (1), the support plate (2) and the connecting flange (3);
the water-cooling head cover (1) is a circular truncated cone-shaped cylindrical structure with an annular gap formed by coaxially welding an inner cylinder and an outer cylinder, the outer circumferential surface of the water-cooling head cover is coaxially welded at one axial end of the connecting flange (3) through more than one pair of support plates (2), and the shape of the water-cooling head cover (1) can rectify incoming flow at the small end of the water-cooling head cover;
wherein, set up more than a pair of cooling water passageway I (5) along circumference on flange (3), and every cooling water passageway I (5) radially distribute and correspond with a extension board (2) and be connected, simultaneously, it communicates with the cooling water passageway II (6) that set up in corresponding extension board (2), more than the cooling water of the same way flows in from corresponding cooling water passageway I (5) on flange (3) respectively, through the cooling water passageway II (6) that its homonymy corresponds, inside the water-cooling hood (1) of bypassing and every cooling water passageway II (6) intercommunication, from the cooling water passageway II (6) and the cooling water passageway I (5) mesocycle outflow of opposite side to take away high-temperature gas's heat.
2. The water-cooled cylindrical rectifier for the stable combustion of a heater as claimed in claim 1, characterized in that all the struts (2) are evenly distributed along the circumference of the water-cooled head cover (1).
3. The water-cooled barrel rectifier for heater stabilized combustion as set forth in claim 1, further including: and the reinforcing rib plate (4) is arranged between the inner cylinder and the outer cylinder and is used for reinforcing the water-cooling head cover (1).
4. The water-cooled barrel rectifier for stable combustion of a heater as claimed in claim 3, wherein the reinforcing rib plate (4) is provided with more than two small holes for enhancing the circulating strength of the cooling water in the water-cooled head cover (1).
5. The water-cooled barrel rectifier for stable combustion of a heater as claimed in claim 3, wherein the number of the reinforcing ribs (4) is the same as the number of the stay plates (2), and the installation position thereof in the water-cooled head cover (1) corresponds to the installation position of the stay plates (2).
6. The water-cooled cylindrical rectifier for stable combustion of a heater as claimed in claim 3, characterized in that the materials of the water-cooled head cover (1), the support plate (2), the connecting flange (3) and the reinforcing rib plate (4) are all stainless steel.
7. The water-cooled cylindrical rectifier for stable combustion of heater as claimed in claim 1, wherein the inner cylinder of said water-cooled head cover (1) is outwardly flanged, the outer cylinder is inwardly flanged, and the flanges of the inner and outer cylinders are butted to increase the circumferential clearance therebetween.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010956449.0A CN112240568B (en) | 2020-09-11 | 2020-09-11 | Water-cooling cylindrical rectifier for stable combustion of heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010956449.0A CN112240568B (en) | 2020-09-11 | 2020-09-11 | Water-cooling cylindrical rectifier for stable combustion of heater |
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| CN112240568A CN112240568A (en) | 2021-01-19 |
| CN112240568B true CN112240568B (en) | 2022-10-28 |
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| CN116810151B (en) * | 2023-08-30 | 2023-12-22 | 靖江佳晟真空技术有限公司 | Water-cooling flange structure |
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| JP3905484B2 (en) * | 2003-03-31 | 2007-04-18 | トヨタ自動車株式会社 | Heat storage tank mounting structure |
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