CN205264188U - Teaching is with test section of small -size low -speed smoke wind tunnel - Google Patents
Teaching is with test section of small -size low -speed smoke wind tunnel Download PDFInfo
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- CN205264188U CN205264188U CN201521096687.XU CN201521096687U CN205264188U CN 205264188 U CN205264188 U CN 205264188U CN 201521096687 U CN201521096687 U CN 201521096687U CN 205264188 U CN205264188 U CN 205264188U
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- resistance wire
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Abstract
The utility model provides a teaching is with test section of small -size low -speed smoke wind tunnel, relates to the air experimental apparatus. Be equipped with wire, resistance wire, hollow metal tube, support, drop bottle, burette, observation box, weight and power, the power -on is crossed wire and wire connection and is connected with resistance wire both ends, forms the current loop, and drop bottle is fixed on the support, and the burette is connected with hollow metal tube, and observation box establishes below the resistance wire, and the upper end of weight is string on the resistance wire for the resistance wire keeps vertical position, the oil of being fuming is equipped with in the drop bottle. Observation box can adopt the transparent plate to constitute, and the board presss from both sides with side board accessible butterfly and is connected directly over observation box for digging of side board is convenient for change the model in the experiment preparatory stage.
Description
Technical field
The utility model relates to air experimental provision, especially relates to a kind of teaching with the test section of small-sized low speed smoke wind tunnel.
Background technology
The China Higher education training of personnel has very large demand to teaching wind-tunnel. But all the time, China university wind tunnel laboratory is mainAs the experiment place of country and the research of longitudinal scientific research fund at the provincial and ministerial level and large project, use colony be mainly College Teachers,Master, doctoral candidate and other related scientific research personnel, and substantially do not obtain for the usefulness of junior-senior high school, Undergraduate Experimental TeachingPerformance, lacks the demonstration of comparison system, and seldom has an opportunity to participate in using.
Summary of the invention
The purpose of this utility model is to provide a kind of and imparts knowledge to students with the test section of small-sized low speed smoke wind tunnel.
The utility model is provided with wire, resistance wire, hollow metal tube, support, drop bottle, dropper, observation box, weight and power supply;
Described power supply is connected with resistance wire two ends with terminal by wire, forms current loop, and drop bottle is fixed on support,Dropper is connected with hollow metal tube, and observation box is located at resistance wire below, and the upper end of weight hangs on resistance wire, protects for resistance wireHold plumbness; The oil of being fuming is housed in drop bottle.
Described terminal can adopt electric chuck.
Described observation box can adopt transparent panel composition, and directly over observation box, plate can be connected by butterfly clamp with side panel, forDigging of side panel, is convenient to change model in the Preparatory work of experiment stage.
When the oil of being fuming is heated while being fuming on resistance wire, under the effect of air-flow, form cigarette line; Because observation box adopts transparent panel (exampleAs acrylic board) composition, therefore there is good light transmission, ensure that observation model flow field has vision accessibility; Butterfly clampFor the acrylic board of directly over connecting and side, convenient at Preparatory work of experiment stage replacing model; Weight is for making resistance wireKeep tensioned state, ensure that resistance wire is vertical, avoid rocking in incoming flow.
Most of gaseous state or liquid fluid are all transparent mediums, and their motion is directly observed sightless often with human eye.In order to recognize the motion state of fluid, must to have, the technology of flow visual can be used, this technology is just called as to flow and showsShow technology. The utility model adopts cigarette line technology, and in air-flow, cloth, to scribble the wire of volatility finish, utilizes current flow heatsThe oil smoke of rear volatilization, as trace particle, is observed streamline. Cigarette line generator is by the main portion such as resistance wire, support and resistance wire loopPart forms. On resistance wire, dripping the oil of being fuming, by power supply to resistance wire continuous heating, the oil droplet that can make the diameter of resistance wire adhere toBe fuming. Wire laying mode is selected to add vertical heavy-hammer mode and arranges, design concept oilyly falls by free gravity for allowing be fuming, and can formMany smoke puff lines, and make resistance wire keep tensioned state by weight, ensure that resistance wire is vertical, avoid rocking in incoming flow.
Observation box is made up of acrylic board, because acrylic board has good light transmission, therefore can ensure that naked eyes directly observeExperimental phenomena. Simultaneously top is connected by butterfly clamp with the acrylic board of side, makes the acrylic board above being placed on can be freeRaise, be convenient to change experimental model in the Preparatory work of experiment stage.
The oil of being fuming is stored in drop bottle, flows down, because dropper is plastic products, therefore at dropper and electricity by gravity via dropperIn the middle of resistance silk, add the preceding paragraph hollow metal tubule. Power supply is also a key with being connected between resistance wire of being fuming. Test adopts electricityThe mode of folder wire connects both, has both ensured that circuit connects smoothly, accomplishes again for convenience detach.
Wind-tunnel causes the gas flow of controllable adjustable in test section by power set and corresponding rectification steady flow segment device, useCarrying out various types of aerodynamics experimental studies, is a kind of custom-designed air experimental provision. Teaching wind-tunnel is used for outIf relevant hydrodynamics teaching experiment, for example, so that student understands basic equation and general principle by visual experiment: ReynoldsExperiment, energy equation experiment, equation of momentum experiment, local losses experiment, low-speed wind tunnel fan power and active force experiment, lowSpeed boundary layer experiment, two-dimensional wing lift, drag characteristic experiment, the experiment of aerofoil profile pressure distribution etc.
Brief description of the drawings
Fig. 1 is the structure composition schematic diagram of the utility model embodiment.
Detailed description of the invention
Referring to Fig. 1, the utility model embodiment is provided with electric lead 1 and 12, electric chuck 2 and 11, and resistance wire 3, hollow metal tube 4,Support 5, drop bottle 6, dropper 7, butterfly clamp 8, observation box 9, weight 10, power supply 13. Power supply 13 by electric lead 1 and 12 andUpper and lower two electric chucks 2 and 11 and resistance wire 3 form current loop, when energising, electric energy conversion is the heat energy on resistance wire, makes electricityResistance silk temperature raises and ensures that temperature, all the time higher than the boiling point of the oil of being fuming (the interior storage of drop bottle 6 be fuming oil), produces cigarette line continually;Drop bottle 6 is fixed on support 5, and the oil of being fuming connects hollow metal tube 4 via dropper 7, and then flows on resistance wire 3, and the oil of being fuming is at electricityOn resistance silk, be heated and be fuming, under the effect of incoming flow, form cigarette line; The whole area of observation coverage (observation box) is made up of polylith acrylic board,Acrylic board has good light transmission, has ensured that observation model flow field has vision accessibility; Butterfly clamp 8 is for directly over connectingWith the acrylic board of side, convenient at Preparatory work of experiment stage replacing model; 10 of weights are for making resistance wire keep tensioned state,Guarantee resistance wire is vertical, avoids rocking in incoming flow.
Claims (3)
1. impart knowledge to students with a test section for small-sized low speed smoke wind tunnel, it is characterized in that being provided with wire, resistance wire, hollow metal tube,Support, drop bottle, dropper, observation box, weight and power supply;
Described power supply is connected with resistance wire two ends with terminal by wire, forms current loop, and drop bottle is fixed on support,Dropper is connected with hollow metal tube, and observation box is located at resistance wire below, and the upper end of weight hangs on resistance wire, protects for resistance wireHold plumbness; The oil of being fuming is housed in drop bottle.
2. a kind of teaching with the test section of small-sized low speed smoke wind tunnel as claimed in claim 1, is characterized in that described terminal adoptsElectricity consumption chuck.
3. a kind of teaching with the test section of small-sized low speed smoke wind tunnel as claimed in claim 1, is characterized in that described observation box adoptsTransparent panel composition, directly over observation box, plate is connected by butterfly clamp with side panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521096687.XU CN205264188U (en) | 2015-12-24 | 2015-12-24 | Teaching is with test section of small -size low -speed smoke wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521096687.XU CN205264188U (en) | 2015-12-24 | 2015-12-24 | Teaching is with test section of small -size low -speed smoke wind tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205264188U true CN205264188U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521096687.XU Active CN205264188U (en) | 2015-12-24 | 2015-12-24 | Teaching is with test section of small -size low -speed smoke wind tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205264188U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764507A (en) * | 2017-11-16 | 2018-03-06 | 同济大学 | Suitable for the Flow Field in Wind Tunnel visualization device and its application method at architectural design initial stage |
| CN108318212A (en) * | 2018-04-17 | 2018-07-24 | 成都工匠之星科技有限公司 | A kind of experimental section of teaching demonstration wind-tunnel |
| CN109084950A (en) * | 2018-09-11 | 2018-12-25 | 南京工业大学 | Visual equipment suitable for flow field in toilet |
| CN113188749A (en) * | 2021-05-07 | 2021-07-30 | 中国民航大学 | Integrated adjustable smoke generating device of smoke wind tunnel |
-
2015
- 2015-12-24 CN CN201521096687.XU patent/CN205264188U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764507A (en) * | 2017-11-16 | 2018-03-06 | 同济大学 | Suitable for the Flow Field in Wind Tunnel visualization device and its application method at architectural design initial stage |
| CN107764507B (en) * | 2017-11-16 | 2019-03-05 | 同济大学 | Flow Field in Wind Tunnel visualization device and its application method suitable for architectural design initial stage |
| CN108318212A (en) * | 2018-04-17 | 2018-07-24 | 成都工匠之星科技有限公司 | A kind of experimental section of teaching demonstration wind-tunnel |
| CN109084950A (en) * | 2018-09-11 | 2018-12-25 | 南京工业大学 | Visual equipment suitable for flow field in toilet |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |