CN105318356A - High aspect ratio variable section heat exchange channel - Google Patents
High aspect ratio variable section heat exchange channel Download PDFInfo
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- CN105318356A CN105318356A CN201410347802.XA CN201410347802A CN105318356A CN 105318356 A CN105318356 A CN 105318356A CN 201410347802 A CN201410347802 A CN 201410347802A CN 105318356 A CN105318356 A CN 105318356A
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- combustion chamber
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- exchanger channels
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Abstract
The invention belongs to the technical field of heat exchange channels, and particularly relates to a high aspect ratio variable section heat exchange channel. The periphery of a combustion chamber is a combustion chamber wall, the inner side of the combustion chamber wall is a combustion chamber inner wall, the outer side is a combustion chamber outer wall, the side face is ribs, and the heat exchange channel is together formed by the combustion chamber inner wall, the combustion chamber outer wall and the ribs in an enclosure mode. A gas inlet is formed in the left side of the combustion chamber, and a gas outlet is formed in the right side of the combustion chamber. At the upper end and the lower end of the right side of the heat exchange channel, a coolant inlet 7 is formed between the combustion chamber inner wall and the combustion chamber outer wall; at the upper end and the lower end of the left side of the heat exchange channel, a coolant outlet 8 is formed between a combustion chamber inner wall 3 and a combustion chamber outer wall 4, and a coolant flows from the coolant inlet 7 and flows out of the coolant outlet 8. According to the high aspect ratio variable section heat exchange channel, a high aspect ratio structure is adopted, the convection heat transfer efficiency is high, and the flow resistance is lower; the heat exchange channels with different variable sections are adopted according to distribution of the heat flux density in different positions of the axial direction of the combustion chamber, and an optimal allocation of the gas wall temperature and the flow resistance of the combustion chamber can be achieved.
Description
Technical field
This technology belongs to heat exchanger channels field, is specifically related to a kind of large depth-to-width ratio variable cross-section heat exchanger channels.
Background technology
Re-generatively cooled is a kind of most popular method of current Liquid Rocket Engine Combustion Chambers inner surface heat protection, utilizes propellant first to be cooled by the cooling duct on chamber wall before spraying into combustion chamber.
High pressure large hot-fluid Inner Wall of Combustion Chamber will bear larger alternation high-low temperature difference stress and the coupling of pressure reduction stress in the course of the work, working environment very severe, thermal protection is quite difficult, continue to use the protection of traditional re-generatively cooled to be difficult to meet and repeatedly to start and bad working environments that under the overload situations that flies, high room presses high mixing ratio to work long hours, time repeatedly long after work, combustion chamber regenerative cooling channels inwall there will be through wall flaw.For the large hot-fluid combustion chamber of high pressure, due to the restriction of engine turbine pump boosting capability, the dependence simply pressure drop allowable that increases cooling duct can not improve cooling capacity, need design one can realize combustion chamber gas wall temperature and flow resistance allocation optimum, both guarantee the safe and reliable thermal protection of Inner Wall of Combustion Chamber under large hot-fluid, reduce again the novel heat exchange passage of cooling medium pressure drop demand.
Summary of the invention
The object of the invention is to: provide one to be applicable to, in the large hot-fluid combustion chamber of high pressure, combustion chamber gas wall temperature and flow resistance allocation optimum can be realized.
Technical scheme of the present invention is as follows: a kind of large depth-to-width ratio variable cross-section heat exchanger channels, comprise combustion chamber locular wall, heat exchanger channels, combustion chamber, periphery, described combustion chamber is combustion chamber locular wall, and the inner side of combustion chamber locular wall is Inner Wall of Combustion Chamber, and outside is outer wall of combustion chamber, side is rib, Inner Wall of Combustion Chamber, outer wall of combustion chamber and rib surround heat exchanger channels jointly, are fuel gas inlet on the left of combustion chamber, and right side is gas outlet, combustion gas is entered by fuel gas inlet, is sprayed by gas outlet; On the right side of heat exchanger channels, upper and lower two ends, are coolant entrance between Inner Wall of Combustion Chamber and outer wall of combustion chamber, and upper and lower two ends on the left of heat exchanger channels are coolant outlet between Inner Wall of Combustion Chamber and outer wall of combustion chamber.
Described heat exchanger channels adopts large aspect ratio structures, and namely the Ratio control of channel depth and width is 6 ~ 9, and its bottom thickness controls at 0.5 ~ 1.0mm.
The Ratio control of the described heat exchanger channels degree of depth and width is 7 ~ 8.
The Ratio control of the described heat exchanger channels degree of depth and width is 8 ~ 9.
The Ratio control of the described heat exchanger channels degree of depth and width is 6 ~ 7.
Described Inner Wall of Combustion Chamber 3 adopts the copper alloy of high heat conductance to be made by Xiyanping injection.
Described outer wall of combustion chamber is that high-strength alloy or electroformed nickel are made, and adopts the mode of diffusion welding (DW) or electroforming to be combined with Inner Wall of Combustion Chamber.
Remarkable result of the present invention is: heat exchanger channels adopts large aspect ratio structures, and heat convection efficiency is high, and flow resistance is relatively little; The axial diverse location along combustion chamber, the heat exchanger channels of different variable cross-section is adopted according to the distribution of heat flow density, combustion chamber gas wall temperature and flow resistance allocation optimum can be realized, both guarantee the safe and reliable thermal protection of Inner Wall of Combustion Chamber under large hot-fluid, reduce again the novel heat exchange passage of cooling medium pressure drop demand.
Accompanying drawing explanation
Fig. 1 is one of the present invention large depth-to-width ratio variable cross-section heat exchanger channels planar structure schematic diagram;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is the B-B view of Fig. 1;
Fig. 4 is the C-C view of Fig. 1;
In figure: 1 heat exchanger channels, 2 ribs, 3 Inner Wall of Combustion Chambers, 4 outer wall of combustion chamber, 5 fuel gas inlets, 6 gas outlets, 7 coolant inlets, 8 coolant outlets, 9 combustion chambers
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
The present invention is a kind of large depth-to-width ratio variable cross-section heat exchanger channels, periphery, combustion chamber 9 is combustion chamber locular wall, and the inner side of combustion chamber locular wall is Inner Wall of Combustion Chamber 3, and outside is outer wall of combustion chamber 4, side is rib 2, and Inner Wall of Combustion Chamber 3, outer wall of combustion chamber 4 surround heat exchanger channels 1 jointly with rib 2.Be fuel gas inlet 5 on the left of combustion chamber 9, right side is gas outlet 6, and in the course of work, combustion gas is entered by fuel gas inlet 5, is sprayed by gas outlet 6.Upper and lower two ends on the right side of heat exchanger channels 1, be coolant entrance 7 between Inner Wall of Combustion Chamber 3 and outer wall of combustion chamber 4, upper and lower two ends on the left of heat exchanger channels are coolant outlet 8 between Inner Wall of Combustion Chamber 3 and outer wall of combustion chamber 4, cooling agent is flowed into by coolant entrance 7, is flowed out by coolant outlet 8.By heat exchange strong between cooling agent and combustion gas, heat is taken away, be operated within the allowable temperature scope of material to keep Inner Wall of Combustion Chamber 3.
Heat exchanger channels 1 adopts large aspect ratio structures, and namely the Ratio control of channel depth and width is 6 ~ 9, and its bottom thickness controls at 0.5 ~ 1.0mm.Described heat exchanger channels 1 is axial diverse location along combustion chamber, adopts the heat exchanger channels of different variable cross-section according to the distribution of heat flow density.Adopt the heat exchanger channels of the channel depth shown in B-B cross section and width in the peri-laryngeal region, combustion chamber that heat flow density is maximum, the ratio of its channel depth and width is 8 ~ 9; Near the fuel gas inlet 5 that heat flow density is less, adopt the heat exchanger channels of the channel depth shown in A-A cross section and width, the ratio of its channel depth and width is 7 ~ 8; Near the gas outlet 6 that heat flow density is minimum, adopt the heat exchanger channels of the channel depth shown in C-C cross section and width, the ratio of its channel depth and width is 6 ~ 7.
Inner Wall of Combustion Chamber 3 adopts the copper alloy of high heat conductance to be made by Xiyanping injection, and outer wall of combustion chamber 4 adopts the mode of diffusion welding (DW) or electroforming to be combined with Inner Wall of Combustion Chamber 3, and material adopts high-strength alloy or electroformed nickel.
Claims (7)
1. a large depth-to-width ratio variable cross-section heat exchanger channels, it is characterized in that: comprise combustion chamber locular wall, heat exchanger channels (1), combustion chamber (9), described combustion chamber (9) periphery is combustion chamber locular wall, the inner side of combustion chamber locular wall is Inner Wall of Combustion Chamber (3), outside is outer wall of combustion chamber (4), side is rib (2), Inner Wall of Combustion Chamber (3), outer wall of combustion chamber (4) and rib (2) surround heat exchanger channels (1) jointly, left side, combustion chamber (9) is fuel gas inlet (5), right side is gas outlet (6), combustion gas is entered by fuel gas inlet (5), sprayed by gas outlet (6), at two ends up and down, heat exchanger channels (1) right side, be coolant entrance (7) between Inner Wall of Combustion Chamber (3) and outer wall of combustion chamber (4), upper and lower two ends on the left of heat exchanger channels are coolant outlet (8) between Inner Wall of Combustion Chamber (3) and outer wall of combustion chamber (4).
2. according to one according to claim 1 large depth-to-width ratio variable cross-section heat exchanger channels, it is characterized in that: described heat exchanger channels (1) adopts large aspect ratio structures, namely the Ratio control of channel depth and width is 6 ~ 9, and its bottom thickness controls at 0.5 ~ 1.0mm.
3. according to the large depth-to-width ratio variable cross-section of the one described in claim 1 or 2 heat exchanger channels, it is characterized in that: the Ratio control of described heat exchanger channels (1) degree of depth and width is 7 ~ 8.
4. according to the large depth-to-width ratio variable cross-section of the one described in claim 1 or 2 heat exchanger channels, it is characterized in that: the Ratio control of described heat exchanger channels (1) degree of depth and width is 8 ~ 9.
5. according to the large depth-to-width ratio variable cross-section of the one described in claim 1 or 2 heat exchanger channels, it is characterized in that: the Ratio control of described heat exchanger channels (1) degree of depth and width is 6 ~ 7.
6. according to one according to claim 1 large depth-to-width ratio variable cross-section heat exchanger channels, it is characterized in that: described Inner Wall of Combustion Chamber 3 adopts the copper alloy of high heat conductance to be made by Xiyanping injection.
7. according to one according to claim 1 large depth-to-width ratio variable cross-section heat exchanger channels, it is characterized in that: described outer wall of combustion chamber (4) is made for high-strength alloy or electroformed nickel, adopt the mode of diffusion welding (DW) or electroforming and Inner Wall of Combustion Chamber (3) to combine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410347802.XA CN105318356A (en) | 2014-07-21 | 2014-07-21 | High aspect ratio variable section heat exchange channel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410347802.XA CN105318356A (en) | 2014-07-21 | 2014-07-21 | High aspect ratio variable section heat exchange channel |
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| CN105318356A true CN105318356A (en) | 2016-02-10 |
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| CN201410347802.XA Pending CN105318356A (en) | 2014-07-21 | 2014-07-21 | High aspect ratio variable section heat exchange channel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654538A (en) * | 2018-12-07 | 2019-04-19 | 中国航发沈阳发动机研究所 | A kind of Venturi tube conducive to reduction Calculating Wall Temperature of Flame Tube |
| CN110307564A (en) * | 2019-06-12 | 2019-10-08 | 中南大学 | Split type combustion room and its engine and thermal protection method |
| CN112832928A (en) * | 2021-03-05 | 2021-05-25 | 中国科学院力学研究所 | Method for designing cooling structure with equal inner wall strength for rocket engine |
| CN113153574A (en) * | 2021-04-22 | 2021-07-23 | 北京航天动力研究所 | Reusable quick-connection sandwich type combustion chamber |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654538A (en) * | 2018-12-07 | 2019-04-19 | 中国航发沈阳发动机研究所 | A kind of Venturi tube conducive to reduction Calculating Wall Temperature of Flame Tube |
| CN110307564A (en) * | 2019-06-12 | 2019-10-08 | 中南大学 | Split type combustion room and its engine and thermal protection method |
| CN112832928A (en) * | 2021-03-05 | 2021-05-25 | 中国科学院力学研究所 | Method for designing cooling structure with equal inner wall strength for rocket engine |
| CN112832928B (en) * | 2021-03-05 | 2022-04-22 | 中国科学院力学研究所 | Method for designing cooling structure with equal inner wall strength for rocket engine |
| CN113153574A (en) * | 2021-04-22 | 2021-07-23 | 北京航天动力研究所 | Reusable quick-connection sandwich type combustion chamber |
| CN113153574B (en) * | 2021-04-22 | 2022-07-05 | 北京航天动力研究所 | Reusable quick-connection sandwich type combustion chamber |
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Application publication date: 20160210 |