CN113848033A - Smoke continuous generating device for small visual wind tunnel test bed - Google Patents
Smoke continuous generating device for small visual wind tunnel test bed Download PDFInfo
- Publication number
- CN113848033A CN113848033A CN202111121287.XA CN202111121287A CN113848033A CN 113848033 A CN113848033 A CN 113848033A CN 202111121287 A CN202111121287 A CN 202111121287A CN 113848033 A CN113848033 A CN 113848033A
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- smoke
- tobacco tar
- top cover
- inverted cone
- shaped top
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- 239000000779 smoke Substances 0.000 title claims abstract description 64
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 230000000007 visual effect Effects 0.000 title claims abstract description 12
- 239000004509 smoke generator Substances 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 241000208125 Nicotiana Species 0.000 claims description 18
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000700 radioactive tracer Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention aims to provide a smoke continuous generating device for a small visual wind tunnel test bed, which comprises a smoke generator base and an inverted cone-shaped top cover, wherein the inverted cone-shaped top cover is arranged above the smoke generator base, a heating temperature measuring layer is arranged in the smoke generator base, a high-pressure airflow hole is formed in the side wall of the smoke generator base, a smoke outlet connector is arranged at the top end of the inverted cone-shaped top cover, a smoke oil pipeline inlet is formed in the side wall of the inverted cone-shaped top cover, the high-pressure airflow hole is connected with a high-pressure air inlet valve, and the smoke outlet connector is connected with a smoke output pipe. The smoke generating device designed by the invention can better control the generation, flow and tracing effects of smoke, has stronger controllability, and has the characteristics of small volume, light weight, good continuity and strong adaptability, and good working reliability.
Description
Technical Field
The invention relates to a smoke generating device, in particular to a smoke generating device of a wind tunnel experiment table.
Background
The research content of modern wind tunnel tests not only meets the measurement of parameters such as flow, pressure, temperature and the like based on boundary conditions, but also is widely applied to the flow field measurement and observation test method of a small wind tunnel test bed as a novel advanced observation method for the visual processing of the flow state of fluid in the wind tunnel flow field and on the surface of a test piece. At present, a method for measuring the flow state of an internal flow field by adding tracer particles and a detection device in a fluid usually needs to combine a precise optical instrument and a laser detection device, and has the defects of high equipment cost, large volume, discontinuity, inconvenient use and the like, so that for a small-sized low-speed wind tunnel test bed, a tracer device with a simple structure, convenience in use and low cost is needed to meet the needs and requirements of practical use.
Disclosure of Invention
The invention aims to provide a smoke continuous generating device for a small visual wind tunnel test bed, which can improve the observation of a flow field in a wind tunnel, reflect the corresponding characteristics of the flow field, and has the functions of regulating tracing effects at different flow velocities and the like.
The purpose of the invention is realized as follows:
the invention relates to a smoke continuous generating device for a small visual wind tunnel test bed, which is characterized in that: the smoke generator comprises a smoke generator base and an inverted cone-shaped top cover, wherein the inverted cone-shaped top cover is installed above the smoke generator base, a heating temperature measuring layer is arranged in the smoke generator base, a high-pressure airflow hole is formed in the side wall of the smoke generator base, a smoke outlet joint is arranged at the top end of the inverted cone-shaped top cover, a smoke oil pipeline inlet is formed in the side wall of the inverted cone-shaped top cover, the high-pressure airflow hole is connected with a high-pressure air inlet valve, and the smoke outlet joint is connected with a smoke output pipe.
The present invention may further comprise:
1. the heating temperature measuring layer is provided with a smoke heat insulation layer below, the tobacco tar pipeline inlet comprises a first tobacco tar pipeline inlet and a second tobacco tar pipeline inlet, the first tobacco tar pipeline inlet and the second tobacco tar pipeline inlet are respectively located on two sides of the smoke outlet joint, and the first tobacco tar pipeline inlet and the second tobacco tar pipeline inlet are located on the same line.
2. The air inlet diameter of the high-pressure airflow hole is 0.4-0.5 times of the height of the base of the smoke generator; the pipe diameter of the smoke output pipe is 1.3-1.5 times of the air inlet diameter of the high-pressure airflow hole; the diameter of the tobacco tar pipeline inlet is 0.2-0.5 times of the diameter of the high-pressure air inlet valve.
The invention has the advantages that: the invention makes up the problems of unclear record, non-visual flow field performance and the like in the field of the flow field tracing method of the low-speed small wind tunnel test bed, and realizes tracing observation of the internal flow field of the low-speed small wind tunnel on the premise of ensuring light weight, small volume and high economy of the tracing device. The distribution of the pipe diameter and the gap of the heating pipe, the arrangement of the temperature sensor and the addition of the asbestos heat insulation layer are ensured, the detection and the control of the temperature of the bottom heating device are ensured, the corresponding relation between the atomized smoke volume of the oil smoke and the temperature is established, and the effect of controlling the smoke volume through temperature control is realized; the proper proportion of the smoke and the main flow gas is realized through the high-pressure air inlet valve, the oil supply channel and the pipe diameter ratio of the smoke output, so that the smoke can realize flow field tracing and reduce the adhesion of the smoke to a test piece and a wall surface; the smoke shunting device achieves average distribution of smoke volume in the precursor meeting smoke discharge resistance, is convenient for realizing periodic arrangement of a round pipe test piece and a square pipe test piece, and achieves the best effect of smoke tracing.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a diagram of a heating temperature measuring layer;
FIG. 4 is a pictorial representation of the present invention;
fig. 5 is a dimensional diagram of the present invention.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1-5, the invention comprises a smoke generating module, a flow control module and a smoke shunting module, wherein the smoke generator module comprises a smoke outlet joint 1, a first smoke oil pipeline inlet 2, a second smoke oil pipeline inlet 3, a smoke generator base 4, a high-pressure airflow inlet 5, a smoke heat insulation layer 6 and a heating temperature measuring layer 7. The diameter of the heating surface at the bottom is C1, the diameter of the smoke outlet joint is C2, the diameters of the two tobacco tar pipelines are C3, the diameter of the high-pressure airflow inlet is C4, and the height of the side surface of the base of the smoke generator is L3. The air inlet diameter C4 of the high-pressure air inlet valve of the smoke generating device is 0.4-0.5 times of the height L3 of the base of the smoke generator. The pipe diameter C2 of the flue gas outlet joint is 1.3-1.5 times of the air inlet diameter C4 of the high-pressure air inlet valve. The oil supply pipelines 2 and 3 are 0.2-0.5 times of the diameter of the high-pressure air inlet valve C4.
The smoke generator is composed of a bottom heating structure and smoke fillers, the smoke with opacity is formed by heating, the generated smoke is mixed with air with the same test conditions through the flow controller, the temperature of the smoke is guaranteed not to influence the main flow gas of the test, and the smoke is finally guided into the test wind tunnel through the shunt guide pipe.
According to the required oil smoke size, carry out temperature regulation and control and adjust to the tobacco tar flow to the heating module, can realize the smoke volume production of the operating mode that the adaptation test bench needs.
In summary, the present invention provides a smoke generating device applied to a small low-speed wind tunnel visual test bed, the smoke generating device includes a smoke generating module, a flow control module and a smoke shunting module, wherein the most important part is the smoke generating module, and the raw oil of smoke is heated and evaporated to form smoke after flowing in from an oil transportation structure, so as to play a role of tracing. The smoke generating device overcomes the defects in the field of visual measurement of the internal flow field of the small low-speed wind tunnel, provides a novel smoke generating device with strong pertinence, high economy and simple structure, meets the measurement requirements in the required test research field, has good auxiliary effect on the measurement result, and has strong practicability and reliability.
Claims (3)
1. The utility model provides a smog continuous generation device for small-size visual wind tunnel test bench which characterized by: the smoke generator comprises a smoke generator base and an inverted cone-shaped top cover, wherein the inverted cone-shaped top cover is installed above the smoke generator base, a heating temperature measuring layer is arranged in the smoke generator base, a high-pressure airflow hole is formed in the side wall of the smoke generator base, a smoke outlet joint is arranged at the top end of the inverted cone-shaped top cover, a smoke oil pipeline inlet is formed in the side wall of the inverted cone-shaped top cover, the high-pressure airflow hole is connected with a high-pressure air inlet valve, and the smoke outlet joint is connected with a smoke output pipe.
2. The smoke continuous generating device for the small visual wind tunnel test bed according to claim 1, which is characterized in that: the heating temperature measuring layer is provided with a smoke heat insulation layer below, the tobacco tar pipeline inlet comprises a first tobacco tar pipeline inlet and a second tobacco tar pipeline inlet, the first tobacco tar pipeline inlet and the second tobacco tar pipeline inlet are respectively located on two sides of the smoke outlet joint, and the first tobacco tar pipeline inlet and the second tobacco tar pipeline inlet are located on the same line.
3. The smoke continuous generation device for the small visual wind tunnel test stand according to claim 1 or 2, which is characterized in that: the air inlet diameter of the high-pressure airflow hole is 0.4-0.5 times of the height of the base of the smoke generator; the pipe diameter of the smoke output pipe is 1.3-1.5 times of the air inlet diameter of the high-pressure airflow hole; the diameter of the tobacco tar pipeline inlet is 0.2-0.5 times of the diameter of the high-pressure air inlet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111121287.XA CN113848033A (en) | 2021-09-24 | 2021-09-24 | Smoke continuous generating device for small visual wind tunnel test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111121287.XA CN113848033A (en) | 2021-09-24 | 2021-09-24 | Smoke continuous generating device for small visual wind tunnel test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113848033A true CN113848033A (en) | 2021-12-28 |
Family
ID=78979134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111121287.XA Pending CN113848033A (en) | 2021-09-24 | 2021-09-24 | Smoke continuous generating device for small visual wind tunnel test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113848033A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05223688A (en) * | 1992-02-13 | 1993-08-31 | Ricoh Co Ltd | Smoke generating device |
| JPH05296876A (en) * | 1992-04-20 | 1993-11-12 | Ricoh Co Ltd | Smoke generating apparatus |
| JP2000028473A (en) * | 1998-07-15 | 2000-01-28 | Kawada Kogyo Kk | Smoke generating device for wind tunnel test facility |
| CN2666565Y (en) * | 2003-12-30 | 2004-12-29 | 中国航空工业空气动力研究院 | Vapour-pressure type particle generator |
| CN1587947A (en) * | 2004-09-17 | 2005-03-02 | 西安交通大学 | Flow visual micro smoke wind tunnel device |
| CN102620901A (en) * | 2012-04-27 | 2012-08-01 | 上海理工大学 | Line source dispensing device for wind tunnel experiment |
| US20150014430A1 (en) * | 2013-07-12 | 2015-01-15 | Martin Professional Aps | Smoke generator and method of controlling a smoke generation |
| CN210532357U (en) * | 2019-09-17 | 2020-05-15 | 广州地铁集团有限公司 | Assembled cigarette testing arrangement that puts |
| CN113188749A (en) * | 2021-05-07 | 2021-07-30 | 中国民航大学 | Integrated adjustable smoke generating device of smoke wind tunnel |
-
2021
- 2021-09-24 CN CN202111121287.XA patent/CN113848033A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05223688A (en) * | 1992-02-13 | 1993-08-31 | Ricoh Co Ltd | Smoke generating device |
| JPH05296876A (en) * | 1992-04-20 | 1993-11-12 | Ricoh Co Ltd | Smoke generating apparatus |
| JP2000028473A (en) * | 1998-07-15 | 2000-01-28 | Kawada Kogyo Kk | Smoke generating device for wind tunnel test facility |
| CN2666565Y (en) * | 2003-12-30 | 2004-12-29 | 中国航空工业空气动力研究院 | Vapour-pressure type particle generator |
| CN1587947A (en) * | 2004-09-17 | 2005-03-02 | 西安交通大学 | Flow visual micro smoke wind tunnel device |
| CN102620901A (en) * | 2012-04-27 | 2012-08-01 | 上海理工大学 | Line source dispensing device for wind tunnel experiment |
| US20150014430A1 (en) * | 2013-07-12 | 2015-01-15 | Martin Professional Aps | Smoke generator and method of controlling a smoke generation |
| CN210532357U (en) * | 2019-09-17 | 2020-05-15 | 广州地铁集团有限公司 | Assembled cigarette testing arrangement that puts |
| CN113188749A (en) * | 2021-05-07 | 2021-07-30 | 中国民航大学 | Integrated adjustable smoke generating device of smoke wind tunnel |
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