CN201207234Y - Bernoulli formula phenomenon demonstration instrument - Google Patents
Bernoulli formula phenomenon demonstration instrument Download PDFInfo
- Publication number
- CN201207234Y CN201207234Y CNU2007201942227U CN200720194222U CN201207234Y CN 201207234 Y CN201207234 Y CN 201207234Y CN U2007201942227 U CNU2007201942227 U CN U2007201942227U CN 200720194222 U CN200720194222 U CN 200720194222U CN 201207234 Y CN201207234 Y CN 201207234Y
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- table tennis
- bernoulli equation
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Abstract
The utility model relates to a device for demonstrating Bernoulli equation phenomenon, which is suitable to be used as demonstration experiment in the class of middle school in order to demonstrate the Bernoulli equation phenomenon conveniently in general classroom. The utility model adopts the air pump fitted with air cushion guide rail existed in physical laboratory to provide strong air flow, the phenomenon that the pingpong with thin thread is sucked into the air flow is used to show the principle of Bernoulli equation. The experimental process is integrated with science and amusement. The device has the advantages of simple structure, obvious phenomenon, convenient operation and high success probability, the device is suitable for the self-determination experiment of students.
Description
Technical field
The utility model relates to a kind of different fluid of flow velocity that shows and produces the device of the phenomenon of different pressure (bernoulli equation phenomenon), is applicable in the classroom, middle school as lecture experiment.
Background technology
Bernoulli equation belongs in the physics of middle school takes content as an elective course, but there is a lot of application this knowledge point in actual life and production reality, and therefore to expanding the student knowledge face, guiding student participates in various Inquiry Learning can play special role.And produce the phenomenon of different pressure for the different fluid of flow velocity, and the student lacks life feeling and also is not easy to understand, and like this, it is necessary that experimental demonstration just seems.The experiment of interrelated data introduction at present, the overwhelming majority utilizes current to carry out, and this is unrealistic in tradition classroom, traditional classroom.
Summary of the invention
In order conveniently to demonstrate the bernoulli equation phenomenon in common classroom, the utility model adopts the supporting air pump of the existing air track in physics laboratory that air blast is provided, and it is scientific and interesting that experimentation integrates, and the equipment simple operations makes things convenient for phenomenon obvious.
The concrete technical scheme of the utility model is: on the flexible conduit of the supporting air pump of air track, one hard conduit (can select for use bore to be slightly less than the rigid plastic water pipe of flexible conduit) is installed, and it vertically is fixed on the iron stand, air pump energising back sprays air blast from hard conduit.A table tennis is placed air-flow correct position (can be subjected to air-flow with feel during operation, catch table tennis to seek correct position), can see that table tennis comparatively stably is suspended in the conduit top.Another table tennis is stabbed an aperture, fastens a long fine rule, allow table tennis suspend after, pull fine rule under outwards oblique gently, see that table tennis does not leave air-flow, obviously experiences table tennis and is inhaled among the air-flow.Hard conduit is taken off from iron stand, allow the mouth of pipe, allow the table tennis that has fine rule, will see that table tennis is sucked at once near air-flow towards any direction, the outside gently oblique fine rule of pullling, table tennis can not be pulled away from.
Great advantage of the present utility model is carried out lecture experiment with air-flow place of water stream exactly, especially produces the reason of different pressure with the different fluid of various phenomenon frees flow speed of the table tennis that has fine rule, allows experiment vivid and interesting, science and stimulation.This experimental apparatus is drawn materials simply, and is easy to operate, and success ratio is very high, even can allow the student take action on one's own to test, and experiences the marvellous principle of this physics that is different from the experience of life.
Description of drawings
Below in conjunction with accompanying drawing and concrete experimental procedure the utility model is further specified.
Figure is an embodiment principle schematic of the present utility model.
1. air pumps among the figure, 2. flexible conduit, 3. hard conduit, 4. iron stand, 5. table tennis, 6. fine rule.
Embodiment
On the flexible conduit 2 of the supporting air pump 1 of air track, a hard conduit 3 to be installed, and it vertically is fixed on the iron stand 4, air pump energising back sprays air blast from hard conduit 3.A table tennis 5 is placed the air-flow correct position, can see that table tennis 5 comparatively stably is suspended in conduit 3 tops.Another table tennis 5 is stabbed an aperture, fastens a long fine rule 6, allow table tennis 5 suspend after, pull fine rule 6 under outwards oblique gently, see that table tennis 5 does not leave air-flow, obviously experience table tennis 5 and be inhaled among the air-flow.Hard conduit 3 is taken off from iron stand 4, allow the mouth of pipe, allow the table tennis 5 that has fine rule 6, will see that table tennis 5 is sucked at once near air-flow towards any direction, the outside gently oblique fine rule 6 of pullling, table tennis 5 can not be pulled away from.
Claims (1)
1. bernoulli equation phenomenon demonstrator is characterized in that: on the flexible conduit of the supporting air pump of air track, a hard conduit is installed, and vertically be fixed on it on iron stand, a table tennis is stabbed an aperture, fasten a long fine rule, place the air-flow of flexible conduit ejection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201942227U CN201207234Y (en) | 2007-11-09 | 2007-11-09 | Bernoulli formula phenomenon demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201942227U CN201207234Y (en) | 2007-11-09 | 2007-11-09 | Bernoulli formula phenomenon demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201207234Y true CN201207234Y (en) | 2009-03-11 |
Family
ID=40466294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201942227U Expired - Fee Related CN201207234Y (en) | 2007-11-09 | 2007-11-09 | Bernoulli formula phenomenon demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201207234Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961956A (en) * | 2018-07-31 | 2018-12-07 | 上海工程技术大学 | A kind of bernoulli principle experimental provision based on audio |
-
2007
- 2007-11-09 CN CNU2007201942227U patent/CN201207234Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108961956A (en) * | 2018-07-31 | 2018-12-07 | 上海工程技术大学 | A kind of bernoulli principle experimental provision based on audio |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20091209 |