CN109884243B - Ultrasonic jet nozzle with active cooling large heat flow - Google Patents
Ultrasonic jet nozzle with active cooling large heat flow Download PDFInfo
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- CN109884243B CN109884243B CN201811573284.8A CN201811573284A CN109884243B CN 109884243 B CN109884243 B CN 109884243B CN 201811573284 A CN201811573284 A CN 201811573284A CN 109884243 B CN109884243 B CN 109884243B
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- throat
- cylinder
- inner cylinder
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- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 230000008602 contraction Effects 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000000110 cooling liquid Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 238000005219 brazing Methods 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Earth Drilling (AREA)
- Nozzles (AREA)
Abstract
The invention provides a supersonic jet nozzle with active cooling large heat flow, which comprises a contraction section, a throat section and an expansion section which are connected in sequence; the contraction section, the throat and the expansion section comprise an inner cylinder and an outer cylinder which are coaxially sleeved, and the outer wall of the inner cylinder is connected with the inner wall of the outer cylinder; a plurality of rows of cooling grooves along the axial direction of the inner cylinder are formed at the joint of the outer wall of the inner cylinder and the inner wall of the outer cylinder; the outer wall of the outer cylinder is provided with a liquid collecting cavity with a cooling liquid inlet and a cooling liquid outlet, and the outer cylinder is provided with through holes for communicating the cooling liquid collecting cavity with a plurality of rows of cooling grooves. The inner cylinder of the contraction section and the inner cylinder of the throat are made of copper materials, and the outer cylinder of the contraction section and the outer cylinder of the throat are made of steel materials; the inner barrel and the outer barrel are made of steel materials. Solves the problems of high total temperature (3600K) and large heat flow (30 MW/m) 2 ) Design difficulties for long-term operation (1000 s single).
Description
Technical Field
The invention relates to a supersonic jet nozzle with active cooling large heat flow.
Background
The heating device of a certain gas flow test bed is an important ground test device for simulating the thermal performance of materials and aircrafts in high-temperature gas flow and is used for testing the ablation resistance and heat transfer characteristics of the materials. The jet nozzle is an important component of the heating device, and has the function of enabling the air flow to be subjected to adiabatic isentropic acceleration expansion, and generating an equal Mach number diamond region and a uniform fuel gas flow field which meet the requirements at the outlet of the nozzle, so that the Mach number, pressure, temperature and other parameters of the air flow can meet the test requirements. The traditional jet spray pipe is used at normal temperature and cannot reliably work in a high-temperature and high-heat-flux environment.
Disclosure of Invention
The invention solves the technical problem of providing the supersonic jet spray pipe with the active cooling large heat flow, which can reliably work in a high-temperature and high-heat-flow-density environment.
The technical scheme of the invention is to provide a supersonic jet spray pipe with active cooling and large heat flow, which is characterized in that: comprises a contraction section, a throat section and an expansion section which are connected in sequence; the pipe diameter of the contraction section is sequentially reduced until the pipe diameter is the same as the pipe diameter of the front end of the throat, the pipe diameter of the rear end of the throat is larger than the pipe diameter of the front end, and the pipe diameter of the expansion section is gradually increased;
the contraction section, the throat and the expansion section comprise an inner cylinder and an outer cylinder which are coaxially sleeved, and the outer wall of the inner cylinder is connected with the inner wall of the outer cylinder;
a plurality of rows of cooling grooves along the axial direction of the inner cylinder are formed at the joint of the outer wall of the inner cylinder and the inner wall of the outer cylinder;
the outer wall of the outer cylinder is provided with a liquid collecting cavity with a cooling liquid inlet and a cooling liquid outlet, and the outer cylinder is provided with through holes for communicating the cooling liquid collecting cavity with a plurality of rows of cooling grooves.
Further, the inner cylinder of the contraction section and the inner cylinder of the throat are made of copper materials, and the outer cylinder of the contraction section and the outer cylinder of the throat are made of steel materials; the inner barrel and the outer barrel are made of steel materials.
Further, the inner cylinder of the contraction section is connected with the outer cylinder of the contraction section, the inner cylinder of the throat is connected with the outer cylinder of the throat, and the inner cylinder of the expansion section is connected with the outer cylinder of the expansion section through brazing.
Further, the contraction section and the throat part, and the throat part and the expansion section are welded by argon arc welding.
Further, the inner cavity at the joint of the contraction section, the throat and the expansion section is smooth and excessive.
Further, the liquid collecting cavity is a plurality of annular cavities arranged along the circumference of the outer cylinder.
The beneficial effects of the invention are as follows:
1. the jet flow spray pipe is segmented and designed into a double-layer structure, and an axial cooling structure is designed between the two layers, so that reliable cooling at high temperature is ensured;
2. the jet flow spray pipe is divided into three sections according to different heat flux densities, and corresponding materials and processing techniques are selected according to the heat flux density of each section, so that the jet flow spray pipe can realize high total temperature (3600K) and large heat flow (30 MW/m) 2 ) And the device works for a long time.
Drawings
FIG. 1 is a schematic diagram of a supersonic jet nozzle with active cooling large heat flow in an embodiment;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a portion of an ultrasonic jet nozzle with active cooling of a large heat flow in an embodiment;
the reference numerals in the drawings are: 1-contraction section, 2-throat, 3-expansion section, 4-contraction section outer cylinder, 5-contraction section inner cylinder, 6-expansion section outer cylinder, 7-expansion section inner cylinder, 8-throat outer cylinder, 9-throat inner cylinder, 10-cooling tank, 11-liquid collecting cavity, 12-cooling liquid inlet and 13-cooling liquid outlet.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
As shown in fig. 1, the jet nozzle in this embodiment is formed by sequentially connecting a contraction section 1, a throat section 2 and an expansion section 3. The pipe diameter of the contraction section 1 is sequentially reduced until the pipe diameter is the same as the pipe diameter of the front end of the throat part 2, the pipe diameter of the rear end of the throat part 2 is larger than the pipe diameter of the front end, and the pipe diameter of the expansion section 3 is gradually increased.
The contraction section 1 comprises a contraction section outer cylinder 4 and a contraction section inner cylinder 5, the throat 2 comprises a throat outer cylinder 8 and a throat inner cylinder 9, and the expansion section 3 comprises an expansion section outer cylinder 6 and an expansion section inner cylinder 7. Considering that the heat flux density near the contraction section 1 and the throat 2 is larger, the contraction section inner cylinder 5 and the throat inner cylinder 9 are made of copper materials, the contraction section outer cylinder 4 and the throat outer cylinder 8 are made of steel materials, and the contraction section inner cylinder 5 and the contraction section outer cylinder 4, and the throat inner cylinder 9 and the throat outer cylinder 8 are welded by brazing. Because the heat flux density of the expansion section 3 is smaller, the expansion section outer cylinder 6 and the expansion section inner cylinder 7 are made of steel materials, and the expansion section outer cylinder 6 and the expansion section inner cylinder 7 are welded by brazing. And then the contraction section 1, the throat section 2 and the expansion section 3 are welded into a whole by adopting argon arc welding to form a jet nozzle. In order to ensure reliable cooling at high temperature, as shown in fig. 2, cooling grooves are formed between the inner cylinder and the outer cylinder of each section, and as can be seen from fig. 3, each cooling groove 10 is axially arranged along the inner cylinder, in this embodiment, the cooling grooves 10 are formed along the outer wall of each section of the inner cylinder, a plurality of annular chambers are formed on the outer wall of each section of the outer cylinder and used as cooling liquid collecting chambers, through holes for communicating the cooling liquid collecting chambers with a plurality of rows of cooling grooves are formed on the outer cylinder, so that cooling liquid is ensured to enter the cooling grooves to cool the jet nozzle.
Claims (6)
1. The utility model provides a take initiative cooling large heat flow supersonic jet spray pipe which characterized in that: comprises a contraction section (1), a throat section (2) and an expansion section (3) which are connected in sequence; the pipe diameter of the contraction section (1) is sequentially reduced until the pipe diameter is the same as that of the front end of the throat part (2), the pipe diameter of the rear end of the throat part (2) is larger than that of the front end, and the pipe diameter of the expansion section (3) is gradually increased;
the contraction section (1), the throat section (2) and the expansion section (3) comprise an inner cylinder and an outer cylinder which are coaxially sleeved, and the outer wall of the inner cylinder is connected with the inner wall of the outer cylinder;
a plurality of rows of cooling grooves (10) along the axial direction of the inner cylinder are formed at the joint of the outer wall of the inner cylinder and the inner wall of the outer cylinder;
the outer wall of the outer cylinder is provided with a liquid collecting cavity (11) with a cooling liquid inlet and a cooling liquid outlet, and the outer cylinder is provided with through holes for communicating the cooling liquid collecting cavity (11) with a plurality of rows of cooling grooves (10).
2. The supersonic jet nozzle with active cooling large heat flow according to claim 1, wherein: the materials of the contraction section inner cylinder (5) and the throat inner cylinder (9) are copper materials, and the materials of the contraction section outer cylinder (4) and the throat outer cylinder (8) are steel materials; the materials of the expansion section inner cylinder (7) and the expansion section outer cylinder (6) are steel materials.
3. The supersonic jet nozzle with active cooling large heat flow according to claim 2, wherein: the inner cylinder (5) and the outer cylinder (4), the inner cylinder (9) and the outer cylinder (8), and the inner cylinder (7) and the outer cylinder (6) are all connected by brazing.
4. The supersonic jet nozzle with active cooling large heat flow according to claim 3, wherein: the contraction section (1) and the throat section (2), and the throat section (2) and the expansion section (3) are welded by argon arc welding.
5. The supersonic jet nozzle with active cooling large heat flow according to claim 4, wherein: the inner cavity at the joint of the contraction section (1), the throat section (2) and the expansion section (3) is in smooth transition.
6. The supersonic jet nozzle with active cooling large heat flow according to claim 4, wherein: the liquid collecting cavity (11) is a plurality of annular chambers arranged along the circumferential direction of the outer cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573284.8A CN109884243B (en) | 2018-12-21 | 2018-12-21 | Ultrasonic jet nozzle with active cooling large heat flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573284.8A CN109884243B (en) | 2018-12-21 | 2018-12-21 | Ultrasonic jet nozzle with active cooling large heat flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109884243A CN109884243A (en) | 2019-06-14 |
| CN109884243B true CN109884243B (en) | 2023-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811573284.8A Active CN109884243B (en) | 2018-12-21 | 2018-12-21 | Ultrasonic jet nozzle with active cooling large heat flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109884243B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848494B (en) * | 2019-11-20 | 2020-06-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | Whole water-cooled spray tube |
| CN113389659B (en) * | 2021-07-27 | 2022-10-25 | 中国人民解放军国防科技大学 | Design method of high-temperature fuel gas channel with low heat sink |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1313322A (en) * | 1969-08-14 | 1973-04-11 | Messerschmitt Boelkow Blohm | Combustion chamber and thrust nozzle |
| US6176894B1 (en) * | 1998-06-17 | 2001-01-23 | Praxair Technology, Inc. | Supersonic coherent gas jet for providing gas into a liquid |
| CN102331839A (en) * | 2011-09-09 | 2012-01-25 | 河南科技学院 | CRT (Cathode Ray Tube) water-jet tactility display |
| CN103676981A (en) * | 2013-09-24 | 2014-03-26 | 中国科学院力学研究所 | A kerosene flow control method for a supersonic speed combustion test |
| CN104280205A (en) * | 2014-10-24 | 2015-01-14 | 中国人民解放军国防科学技术大学 | Supersonic velocity laminar flow spraying pipe and supersonic velocity quiet wind tunnel thereof |
| CN104729824A (en) * | 2015-03-12 | 2015-06-24 | 中国科学院力学研究所 | Heat exchanging device used for cooling high mach number nozzle throat channel and construction method thereof |
| CN105092203A (en) * | 2015-08-27 | 2015-11-25 | 北京航天长征飞行器研究所 | Wind tunnel diffuser compatible with multiple nozzles and wind tunnel diffusion method |
| CN209640306U (en) * | 2018-12-21 | 2019-11-15 | 西安航天动力研究所 | A kind of big hot-fluid supersonic jet jet pipe of band active cooling |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120297800A1 (en) * | 2011-05-23 | 2012-11-29 | Kristian Debus | Supersonic Cooling Nozzle Inlet |
-
2018
- 2018-12-21 CN CN201811573284.8A patent/CN109884243B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1313322A (en) * | 1969-08-14 | 1973-04-11 | Messerschmitt Boelkow Blohm | Combustion chamber and thrust nozzle |
| US6176894B1 (en) * | 1998-06-17 | 2001-01-23 | Praxair Technology, Inc. | Supersonic coherent gas jet for providing gas into a liquid |
| CN102331839A (en) * | 2011-09-09 | 2012-01-25 | 河南科技学院 | CRT (Cathode Ray Tube) water-jet tactility display |
| CN103676981A (en) * | 2013-09-24 | 2014-03-26 | 中国科学院力学研究所 | A kerosene flow control method for a supersonic speed combustion test |
| CN104280205A (en) * | 2014-10-24 | 2015-01-14 | 中国人民解放军国防科学技术大学 | Supersonic velocity laminar flow spraying pipe and supersonic velocity quiet wind tunnel thereof |
| CN104729824A (en) * | 2015-03-12 | 2015-06-24 | 中国科学院力学研究所 | Heat exchanging device used for cooling high mach number nozzle throat channel and construction method thereof |
| CN105092203A (en) * | 2015-08-27 | 2015-11-25 | 北京航天长征飞行器研究所 | Wind tunnel diffuser compatible with multiple nozzles and wind tunnel diffusion method |
| CN209640306U (en) * | 2018-12-21 | 2019-11-15 | 西安航天动力研究所 | A kind of big hot-fluid supersonic jet jet pipe of band active cooling |
Non-Patent Citations (4)
| Title |
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| "三维数值模拟再生冷却喷管的换热";李军伟等;《推进技术》(第02期);第15-19页 * |
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| "混压式超声速进气道喉道长度的设计与数值研究";王新月等;《西安交通大学学报》;第43卷(第3期);第106-109页 * |
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| Publication number | Publication date |
|---|---|
| CN109884243A (en) | 2019-06-14 |
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